FFmpeg coverage

Line	Branch	Exec	Source
1			/*
2			* Matroska file demuxer
3			* Copyright (c) 2003-2008 The FFmpeg Project
4			*
5			* This file is part of FFmpeg.
6			*
7			* FFmpeg is free software; you can redistribute it and/or
8			* modify it under the terms of the GNU Lesser General Public
9			* License as published by the Free Software Foundation; either
10			* version 2.1 of the License, or (at your option) any later version.
11			*
12			* FFmpeg is distributed in the hope that it will be useful,
13			* but WITHOUT ANY WARRANTY; without even the implied warranty of
14			* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15			* Lesser General Public License for more details.
16			*
17			* You should have received a copy of the GNU Lesser General Public
18			* License along with FFmpeg; if not, write to the Free Software
19			* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20			*/
21
22			/**
23			* @file
24			* Matroska file demuxer
25			* @author Ronald Bultje <rbultje@ronald.bitfreak.net>
26			* @author with a little help from Moritz Bunkus <moritz@bunkus.org>
27			* @author totally reworked by Aurelien Jacobs <aurel@gnuage.org>
28			* @see specs available on the Matroska project page: http://www.matroska.org/
29			*/
30
31			#include "config.h"
32			#include "config_components.h"
33
34			#include <inttypes.h>
35			#include <stdio.h>
36
37			#include "libavutil/attributes.h"
38			#include "libavutil/avstring.h"
39			#include "libavutil/base64.h"
40			#include "libavutil/bprint.h"
41			#include "libavutil/dict.h"
42			#include "libavutil/display.h"
43			#include "libavutil/hdr_dynamic_metadata.h"
44			#include "libavutil/intfloat.h"
45			#include "libavutil/intreadwrite.h"
46			#include "libavutil/lzo.h"
47			#include "libavutil/mastering_display_metadata.h"
48			#include "libavutil/mathematics.h"
49			#include "libavutil/mem.h"
50			#include "libavutil/opt.h"
51			#include "libavutil/pixdesc.h"
52			#include "libavutil/time_internal.h"
53			#include "libavutil/spherical.h"
54
55			#include "libavcodec/bytestream.h"
56			#include "libavcodec/defs.h"
57			#include "libavcodec/flac.h"
58			#include "libavcodec/itut35.h"
59			#include "libavcodec/mpeg4audio.h"
60			#include "packet_internal.h"
61
62			#include "avformat.h"
63			#include "avio_internal.h"
64			#include "demux.h"
65			#include "dovi_isom.h"
66			#include "internal.h"
67			#include "isom.h"
68			#include "matroska.h"
69			#include "oggdec.h"
70			/* For ff_codec_get_id(). */
71			#include "riff.h"
72			#include "rmsipr.h"
73
74			#if CONFIG_BZLIB
75			#include <bzlib.h>
76			#endif
77			#if CONFIG_ZLIB
78			#include <zlib.h>
79			#endif
80
81			#include "qtpalette.h"
82
83			#define EBML_UNKNOWN_LENGTH UINT64_MAX /* EBML unknown length, in uint64_t */
84			#define NEEDS_CHECKING 2 /* Indicates that some error checks
85			* still need to be performed */
86			#define LEVEL_ENDED 3 /* return value of ebml_parse when the
87			* syntax level used for parsing ended. */
88			#define SKIP_THRESHOLD 1024 * 1024 /* In non-seekable mode, if more than SKIP_THRESHOLD
89			* of unknown, potentially damaged data is encountered,
90			* it is considered an error. */
91			#define UNKNOWN_EQUIV 50 * 1024 /* An unknown element is considered equivalent
92			* to this many bytes of unknown data for the
93			* SKIP_THRESHOLD check. */
94
95			typedef enum {
96			EBML_NONE,
97			EBML_UINT,
98			EBML_SINT,
99			EBML_FLOAT,
100			EBML_STR,
101			EBML_UTF8,
102			EBML_BIN,
103			EBML_NEST,
104			EBML_LEVEL1,
105			EBML_STOP,
106			EBML_TYPE_COUNT
107			} EbmlType;
108
109			typedef struct CountedElement {
110			union {
111			uint64_t u;
112			int64_t i;
113			double f;
114			char *s;
115			} el;
116			unsigned count;
117			} CountedElement;
118
119			typedef const struct EbmlSyntax {
120			uint32_t id;
121			uint8_t type;
122			uint8_t is_counted;
123			size_t list_elem_size;
124			size_t data_offset;
125			union {
126			int64_t i;
127			uint64_t u;
128			double f;
129			const char *s;
130			const struct EbmlSyntax *n;
131			} def;
132			} EbmlSyntax;
133
134			typedef struct EbmlList {
135			int nb_elem;
136			unsigned int alloc_elem_size;
137			void *elem;
138			} EbmlList;
139
140			typedef struct EbmlBin {
141			int size;
142			AVBufferRef *buf;
143			uint8_t *data;
144			int64_t pos;
145			} EbmlBin;
146
147			typedef struct Ebml {
148			uint64_t version;
149			uint64_t max_size;
150			uint64_t id_length;
151			char *doctype;
152			uint64_t doctype_version;
153			} Ebml;
154
155			typedef struct MatroskaTrackCompression {
156			uint64_t algo;
157			EbmlBin settings;
158			} MatroskaTrackCompression;
159
160			typedef struct MatroskaTrackEncryption {
161			uint64_t algo;
162			EbmlBin key_id;
163			} MatroskaTrackEncryption;
164
165			typedef struct MatroskaTrackEncoding {
166			uint64_t scope;
167			uint64_t type;
168			MatroskaTrackCompression compression;
169			MatroskaTrackEncryption encryption;
170			} MatroskaTrackEncoding;
171
172			typedef struct MatroskaMasteringMeta {
173			double r_x;
174			double r_y;
175			double g_x;
176			double g_y;
177			double b_x;
178			double b_y;
179			double white_x;
180			double white_y;
181			double max_luminance;
182			CountedElement min_luminance;
183			} MatroskaMasteringMeta;
184
185			typedef struct MatroskaTrackVideoColor {
186			uint64_t matrix_coefficients;
187			uint64_t bits_per_channel;
188			uint64_t chroma_sub_horz;
189			uint64_t chroma_sub_vert;
190			uint64_t cb_sub_horz;
191			uint64_t cb_sub_vert;
192			uint64_t chroma_siting_horz;
193			uint64_t chroma_siting_vert;
194			uint64_t range;
195			uint64_t transfer_characteristics;
196			uint64_t primaries;
197			uint64_t max_cll;
198			uint64_t max_fall;
199			MatroskaMasteringMeta mastering_meta;
200			} MatroskaTrackVideoColor;
201
202			typedef struct MatroskaTrackVideoProjection {
203			uint64_t type;
204			EbmlBin private;
205			double yaw;
206			double pitch;
207			double roll;
208			} MatroskaTrackVideoProjection;
209
210			typedef struct MatroskaTrackVideo {
211			double frame_rate;
212			uint64_t display_width;
213			uint64_t display_height;
214			uint64_t pixel_width;
215			uint64_t pixel_height;
216			uint64_t cropped_width;
217			uint64_t cropped_height;
218			EbmlBin color_space;
219			uint64_t pixel_cropt;
220			uint64_t pixel_cropl;
221			uint64_t pixel_cropb;
222			uint64_t pixel_cropr;
223			uint64_t display_unit;
224			uint64_t interlaced;
225			uint64_t field_order;
226			uint64_t stereo_mode;
227			uint64_t alpha_mode;
228			EbmlList color;
229			MatroskaTrackVideoProjection projection;
230			} MatroskaTrackVideo;
231
232			typedef struct MatroskaTrackAudio {
233			double samplerate;
234			double out_samplerate;
235			uint64_t bitdepth;
236			uint64_t channels;
237
238			/* real audio header (extracted from extradata) */
239			int coded_framesize;
240			int sub_packet_h;
241			int frame_size;
242			int sub_packet_size;
243			int sub_packet_cnt;
244			int pkt_cnt;
245			uint64_t buf_timecode;
246			uint8_t *buf;
247			} MatroskaTrackAudio;
248
249			typedef struct MatroskaTrackPlane {
250			uint64_t uid;
251			uint64_t type;
252			} MatroskaTrackPlane;
253
254			typedef struct MatroskaTrackOperation {
255			EbmlList combine_planes;
256			} MatroskaTrackOperation;
257
258			typedef struct MatroskaBlockAdditionMapping {
259			uint64_t value;
260			char *name;
261			uint64_t type;
262			EbmlBin extradata;
263			} MatroskaBlockAdditionMapping;
264
265			typedef struct MatroskaTrack {
266			uint64_t num;
267			uint64_t uid;
268			uint64_t type;
269			char *name;
270			char *codec_id;
271			EbmlBin codec_priv;
272			char *language;
273			double time_scale;
274			uint64_t default_duration;
275			uint64_t flag_default;
276			uint64_t flag_forced;
277			uint64_t flag_comment;
278			uint64_t flag_hearingimpaired;
279			uint64_t flag_visualimpaired;
280			uint64_t flag_textdescriptions;
281			CountedElement flag_original;
282			uint64_t seek_preroll;
283			MatroskaTrackVideo video;
284			MatroskaTrackAudio audio;
285			MatroskaTrackOperation operation;
286			EbmlList encodings;
287			uint64_t codec_delay;
288			uint64_t codec_delay_in_track_tb;
289
290			AVStream *stream;
291			int64_t end_timecode;
292			int ms_compat;
293			int needs_decoding;
294			uint64_t max_block_additional_id;
295			EbmlList block_addition_mappings;
296
297			uint32_t palette[AVPALETTE_COUNT];
298			int has_palette;
299			} MatroskaTrack;
300
301			typedef struct MatroskaAttachment {
302			uint64_t uid;
303			char *filename;
304			char *description;
305			char *mime;
306			EbmlBin bin;
307
308			AVStream *stream;
309			} MatroskaAttachment;
310
311			typedef struct MatroskaChapter {
312			uint64_t start;
313			uint64_t end;
314			uint64_t uid;
315			char *title;
316
317			AVChapter *chapter;
318			} MatroskaChapter;
319
320			typedef struct MatroskaIndexPos {
321			uint64_t track;
322			uint64_t pos;
323			} MatroskaIndexPos;
324
325			typedef struct MatroskaIndex {
326			uint64_t time;
327			EbmlList pos;
328			} MatroskaIndex;
329
330			typedef struct MatroskaTag {
331			char *name;
332			char *string;
333			char *lang;
334			uint64_t def;
335			EbmlList sub;
336			} MatroskaTag;
337
338			typedef struct MatroskaTagTarget {
339			char *type;
340			uint64_t typevalue;
341			uint64_t trackuid;
342			uint64_t chapteruid;
343			uint64_t attachuid;
344			} MatroskaTagTarget;
345
346			typedef struct MatroskaTags {
347			MatroskaTagTarget target;
348			EbmlList tag;
349			} MatroskaTags;
350
351			typedef struct MatroskaSeekhead {
352			uint64_t id;
353			uint64_t pos;
354			} MatroskaSeekhead;
355
356			typedef struct MatroskaLevel {
357			uint64_t start;
358			uint64_t length;
359			} MatroskaLevel;
360
361			typedef struct MatroskaBlockMore {
362			uint64_t additional_id;
363			EbmlBin additional;
364			} MatroskaBlockMore;
365
366			typedef struct MatroskaBlock {
367			uint64_t duration;
368			CountedElement reference;
369			uint64_t non_simple;
370			EbmlBin bin;
371			EbmlList blockmore;
372			int64_t discard_padding;
373			} MatroskaBlock;
374
375			typedef struct MatroskaCluster {
376			MatroskaBlock block;
377			uint64_t timecode;
378			int64_t pos;
379			} MatroskaCluster;
380
381			typedef struct MatroskaLevel1Element {
382			int64_t pos;
383			uint32_t id;
384			int parsed;
385			} MatroskaLevel1Element;
386
387			typedef struct MatroskaDemuxContext {
388			const AVClass *class;
389			AVFormatContext *ctx;
390
391			/* EBML stuff */
392			MatroskaLevel levels[EBML_MAX_DEPTH];
393			int num_levels;
394			uint32_t current_id;
395			int64_t resync_pos;
396			int unknown_count;
397
398			uint64_t time_scale;
399			double duration;
400			char *title;
401			char *muxingapp;
402			EbmlBin date_utc;
403			EbmlList tracks;
404			EbmlList attachments;
405			EbmlList chapters;
406			EbmlList index;
407			EbmlList tags;
408			EbmlList seekhead;
409
410			/* byte position of the segment inside the stream */
411			int64_t segment_start;
412
413			/* This packet coincides with FFFormatContext.parse_pkt
414			* and is not owned by us. */
415			AVPacket *pkt;
416
417			/* the packet queue */
418			PacketList queue;
419
420			int done;
421
422			/* What to skip before effectively reading a packet. */
423			int skip_to_keyframe;
424			uint64_t skip_to_timecode;
425
426			/* File has a CUES element, but we defer parsing until it is needed. */
427			int cues_parsing_deferred;
428
429			/* Level1 elements and whether they were read yet */
430			MatroskaLevel1Element level1_elems[64];
431			int num_level1_elems;
432
433			MatroskaCluster current_cluster;
434
435			int is_webm;
436
437			/* WebM DASH Manifest live flag */
438			int is_live;
439
440			/* Bandwidth value for WebM DASH Manifest */
441			int bandwidth;
442			} MatroskaDemuxContext;
443
444			#define CHILD_OF(parent) { .def = { .n = parent } }
445
446			// The following forward declarations need their size because
447			// a tentative definition with internal linkage must not be an
448			// incomplete type (6.7.2 in C90, 6.9.2 in C99).
449			// Removing the sizes breaks MSVC.
450			static EbmlSyntax ebml_syntax[3], matroska_segment[9], matroska_track_video_color[15], matroska_track_video[19],
451			matroska_track[33], matroska_track_encoding[6], matroska_track_encodings[2],
452			matroska_track_combine_planes[2], matroska_track_operation[2], matroska_block_addition_mapping[5], matroska_tracks[2],
453			matroska_attachments[2], matroska_chapter_entry[9], matroska_chapter[6], matroska_chapters[2],
454			matroska_index_entry[3], matroska_index[2], matroska_tag[3], matroska_tags[2], matroska_seekhead[2],
455			matroska_blockadditions[2], matroska_blockgroup[8], matroska_cluster_parsing[8];
456
457			static EbmlSyntax ebml_header[] = {
458			{ EBML_ID_EBMLREADVERSION, EBML_UINT, 0, 0, offsetof(Ebml, version), { .u = EBML_VERSION } },
459			{ EBML_ID_EBMLMAXSIZELENGTH, EBML_UINT, 0, 0, offsetof(Ebml, max_size), { .u = 8 } },
460			{ EBML_ID_EBMLMAXIDLENGTH, EBML_UINT, 0, 0, offsetof(Ebml, id_length), { .u = 4 } },
461			{ EBML_ID_DOCTYPE, EBML_STR, 0, 0, offsetof(Ebml, doctype), { .s = "(none)" } },
462			{ EBML_ID_DOCTYPEREADVERSION, EBML_UINT, 0, 0, offsetof(Ebml, doctype_version), { .u = 1 } },
463			{ EBML_ID_EBMLVERSION, EBML_NONE },
464			{ EBML_ID_DOCTYPEVERSION, EBML_NONE },
465			CHILD_OF(ebml_syntax)
466			};
467
468			static EbmlSyntax ebml_syntax[] = {
469			{ EBML_ID_HEADER, EBML_NEST, 0, 0, 0, { .n = ebml_header } },
470			{ MATROSKA_ID_SEGMENT, EBML_STOP },
471			{ 0 }
472			};
473
474			static EbmlSyntax matroska_info[] = {
475			{ MATROSKA_ID_TIMECODESCALE, EBML_UINT, 0, 0, offsetof(MatroskaDemuxContext, time_scale), { .u = 1000000 } },
476			{ MATROSKA_ID_DURATION, EBML_FLOAT, 0, 0, offsetof(MatroskaDemuxContext, duration) },
477			{ MATROSKA_ID_TITLE, EBML_UTF8, 0, 0, offsetof(MatroskaDemuxContext, title) },
478			{ MATROSKA_ID_WRITINGAPP, EBML_NONE },
479			{ MATROSKA_ID_MUXINGAPP, EBML_UTF8, 0, 0, offsetof(MatroskaDemuxContext, muxingapp) },
480			{ MATROSKA_ID_DATEUTC, EBML_BIN, 0, 0, offsetof(MatroskaDemuxContext, date_utc) },
481			{ MATROSKA_ID_SEGMENTUID, EBML_NONE },
482			CHILD_OF(matroska_segment)
483			};
484
485			static EbmlSyntax matroska_mastering_meta[] = {
486			{ MATROSKA_ID_VIDEOCOLOR_RX, EBML_FLOAT, 0, 0, offsetof(MatroskaMasteringMeta, r_x) },
487			{ MATROSKA_ID_VIDEOCOLOR_RY, EBML_FLOAT, 0, 0, offsetof(MatroskaMasteringMeta, r_y) },
488			{ MATROSKA_ID_VIDEOCOLOR_GX, EBML_FLOAT, 0, 0, offsetof(MatroskaMasteringMeta, g_x) },
489			{ MATROSKA_ID_VIDEOCOLOR_GY, EBML_FLOAT, 0, 0, offsetof(MatroskaMasteringMeta, g_y) },
490			{ MATROSKA_ID_VIDEOCOLOR_BX, EBML_FLOAT, 0, 0, offsetof(MatroskaMasteringMeta, b_x) },
491			{ MATROSKA_ID_VIDEOCOLOR_BY, EBML_FLOAT, 0, 0, offsetof(MatroskaMasteringMeta, b_y) },
492			{ MATROSKA_ID_VIDEOCOLOR_WHITEX, EBML_FLOAT, 0, 0, offsetof(MatroskaMasteringMeta, white_x) },
493			{ MATROSKA_ID_VIDEOCOLOR_WHITEY, EBML_FLOAT, 0, 0, offsetof(MatroskaMasteringMeta, white_y) },
494			{ MATROSKA_ID_VIDEOCOLOR_LUMINANCEMIN, EBML_FLOAT, 1, 0, offsetof(MatroskaMasteringMeta, min_luminance) },
495			{ MATROSKA_ID_VIDEOCOLOR_LUMINANCEMAX, EBML_FLOAT, 0, 0, offsetof(MatroskaMasteringMeta, max_luminance) },
496			CHILD_OF(matroska_track_video_color)
497			};
498
499			static EbmlSyntax matroska_track_video_color[] = {
500			{ MATROSKA_ID_VIDEOCOLORMATRIXCOEFF, EBML_UINT, 0, 0, offsetof(MatroskaTrackVideoColor, matrix_coefficients), { .u = AVCOL_SPC_UNSPECIFIED } },
501			{ MATROSKA_ID_VIDEOCOLORBITSPERCHANNEL, EBML_UINT, 0, 0, offsetof(MatroskaTrackVideoColor, bits_per_channel), { .u = 0 } },
502			{ MATROSKA_ID_VIDEOCOLORCHROMASUBHORZ, EBML_UINT, 0, 0, offsetof(MatroskaTrackVideoColor, chroma_sub_horz) },
503			{ MATROSKA_ID_VIDEOCOLORCHROMASUBVERT, EBML_UINT, 0, 0, offsetof(MatroskaTrackVideoColor, chroma_sub_vert) },
504			{ MATROSKA_ID_VIDEOCOLORCBSUBHORZ, EBML_UINT, 0, 0, offsetof(MatroskaTrackVideoColor, cb_sub_horz) },
505			{ MATROSKA_ID_VIDEOCOLORCBSUBVERT, EBML_UINT, 0, 0, offsetof(MatroskaTrackVideoColor, cb_sub_vert) },
506			{ MATROSKA_ID_VIDEOCOLORCHROMASITINGHORZ, EBML_UINT, 0, 0, offsetof(MatroskaTrackVideoColor, chroma_siting_horz), { .u = MATROSKA_COLOUR_CHROMASITINGHORZ_UNDETERMINED } },
507			{ MATROSKA_ID_VIDEOCOLORCHROMASITINGVERT, EBML_UINT, 0, 0, offsetof(MatroskaTrackVideoColor, chroma_siting_vert), { .u = MATROSKA_COLOUR_CHROMASITINGVERT_UNDETERMINED } },
508			{ MATROSKA_ID_VIDEOCOLORRANGE, EBML_UINT, 0, 0, offsetof(MatroskaTrackVideoColor, range), { .u = AVCOL_RANGE_UNSPECIFIED } },
509			{ MATROSKA_ID_VIDEOCOLORTRANSFERCHARACTERISTICS, EBML_UINT, 0, 0, offsetof(MatroskaTrackVideoColor, transfer_characteristics), { .u = AVCOL_TRC_UNSPECIFIED } },
510			{ MATROSKA_ID_VIDEOCOLORPRIMARIES, EBML_UINT, 0, 0, offsetof(MatroskaTrackVideoColor, primaries), { .u = AVCOL_PRI_UNSPECIFIED } },
511			{ MATROSKA_ID_VIDEOCOLORMAXCLL, EBML_UINT, 0, 0, offsetof(MatroskaTrackVideoColor, max_cll) },
512			{ MATROSKA_ID_VIDEOCOLORMAXFALL, EBML_UINT, 0, 0, offsetof(MatroskaTrackVideoColor, max_fall) },
513			{ MATROSKA_ID_VIDEOCOLORMASTERINGMETA, EBML_NEST, 0, 0, offsetof(MatroskaTrackVideoColor, mastering_meta), { .n = matroska_mastering_meta } },
514			CHILD_OF(matroska_track_video)
515			};
516
517			static EbmlSyntax matroska_track_video_projection[] = {
518			{ MATROSKA_ID_VIDEOPROJECTIONTYPE, EBML_UINT, 0, 0, offsetof(MatroskaTrackVideoProjection, type), { .u = MATROSKA_VIDEO_PROJECTION_TYPE_RECTANGULAR } },
519			{ MATROSKA_ID_VIDEOPROJECTIONPRIVATE, EBML_BIN, 0, 0, offsetof(MatroskaTrackVideoProjection, private) },
520			{ MATROSKA_ID_VIDEOPROJECTIONPOSEYAW, EBML_FLOAT, 0, 0, offsetof(MatroskaTrackVideoProjection, yaw), { .f = 0.0 } },
521			{ MATROSKA_ID_VIDEOPROJECTIONPOSEPITCH, EBML_FLOAT, 0, 0, offsetof(MatroskaTrackVideoProjection, pitch), { .f = 0.0 } },
522			{ MATROSKA_ID_VIDEOPROJECTIONPOSEROLL, EBML_FLOAT, 0, 0, offsetof(MatroskaTrackVideoProjection, roll), { .f = 0.0 } },
523			CHILD_OF(matroska_track_video)
524			};
525
526			static EbmlSyntax matroska_track_video[] = {
527			{ MATROSKA_ID_VIDEOFRAMERATE, EBML_FLOAT, 0, 0, offsetof(MatroskaTrackVideo, frame_rate) },
528			{ MATROSKA_ID_VIDEODISPLAYWIDTH, EBML_UINT, 0, 0, offsetof(MatroskaTrackVideo, display_width), { .u=-1 } },
529			{ MATROSKA_ID_VIDEODISPLAYHEIGHT, EBML_UINT, 0, 0, offsetof(MatroskaTrackVideo, display_height), { .u=-1 } },
530			{ MATROSKA_ID_VIDEOPIXELWIDTH, EBML_UINT, 0, 0, offsetof(MatroskaTrackVideo, pixel_width) },
531			{ MATROSKA_ID_VIDEOPIXELHEIGHT, EBML_UINT, 0, 0, offsetof(MatroskaTrackVideo, pixel_height) },
532			{ MATROSKA_ID_VIDEOCOLORSPACE, EBML_BIN, 0, 0, offsetof(MatroskaTrackVideo, color_space) },
533			{ MATROSKA_ID_VIDEOALPHAMODE, EBML_UINT, 0, 0, offsetof(MatroskaTrackVideo, alpha_mode), { .u = 0 } },
534			{ MATROSKA_ID_VIDEOCOLOR, EBML_NEST, 0, sizeof(MatroskaTrackVideoColor), offsetof(MatroskaTrackVideo, color), { .n = matroska_track_video_color } },
535			{ MATROSKA_ID_VIDEOPROJECTION, EBML_NEST, 0, 0, offsetof(MatroskaTrackVideo, projection), { .n = matroska_track_video_projection } },
536			{ MATROSKA_ID_VIDEOPIXELCROPB, EBML_UINT, 0, 0, offsetof(MatroskaTrackVideo, pixel_cropb), {.u = 0 } },
537			{ MATROSKA_ID_VIDEOPIXELCROPT, EBML_UINT, 0, 0, offsetof(MatroskaTrackVideo, pixel_cropt), {.u = 0 } },
538			{ MATROSKA_ID_VIDEOPIXELCROPL, EBML_UINT, 0, 0, offsetof(MatroskaTrackVideo, pixel_cropl), {.u = 0 } },
539			{ MATROSKA_ID_VIDEOPIXELCROPR, EBML_UINT, 0, 0, offsetof(MatroskaTrackVideo, pixel_cropr), {.u = 0 } },
540			{ MATROSKA_ID_VIDEODISPLAYUNIT, EBML_UINT, 0, 0, offsetof(MatroskaTrackVideo, display_unit), { .u= MATROSKA_VIDEO_DISPLAYUNIT_PIXELS } },
541			{ MATROSKA_ID_VIDEOFLAGINTERLACED, EBML_UINT, 0, 0, offsetof(MatroskaTrackVideo, interlaced), { .u = MATROSKA_VIDEO_INTERLACE_FLAG_UNDETERMINED } },
542			{ MATROSKA_ID_VIDEOFIELDORDER, EBML_UINT, 0, 0, offsetof(MatroskaTrackVideo, field_order), { .u = MATROSKA_VIDEO_FIELDORDER_UNDETERMINED } },
543			{ MATROSKA_ID_VIDEOSTEREOMODE, EBML_UINT, 0, 0, offsetof(MatroskaTrackVideo, stereo_mode), { .u = MATROSKA_VIDEO_STEREOMODE_TYPE_NB } },
544			{ MATROSKA_ID_VIDEOASPECTRATIO, EBML_NONE },
545			CHILD_OF(matroska_track)
546			};
547
548			static EbmlSyntax matroska_track_audio[] = {
549			{ MATROSKA_ID_AUDIOSAMPLINGFREQ, EBML_FLOAT, 0, 0, offsetof(MatroskaTrackAudio, samplerate), { .f = 8000.0 } },
550			{ MATROSKA_ID_AUDIOOUTSAMPLINGFREQ, EBML_FLOAT, 0, 0, offsetof(MatroskaTrackAudio, out_samplerate) },
551			{ MATROSKA_ID_AUDIOBITDEPTH, EBML_UINT, 0, 0, offsetof(MatroskaTrackAudio, bitdepth) },
552			{ MATROSKA_ID_AUDIOCHANNELS, EBML_UINT, 0, 0, offsetof(MatroskaTrackAudio, channels), { .u = 1 } },
553			CHILD_OF(matroska_track)
554			};
555
556			static EbmlSyntax matroska_track_encoding_compression[] = {
557			{ MATROSKA_ID_ENCODINGCOMPALGO, EBML_UINT, 0, 0, offsetof(MatroskaTrackCompression, algo), { .u = MATROSKA_TRACK_ENCODING_COMP_ZLIB } },
558			{ MATROSKA_ID_ENCODINGCOMPSETTINGS, EBML_BIN, 0, 0, offsetof(MatroskaTrackCompression, settings) },
559			CHILD_OF(matroska_track_encoding)
560			};
561
562			static EbmlSyntax matroska_track_encoding_encryption[] = {
563			{ MATROSKA_ID_ENCODINGENCALGO, EBML_UINT, 0, 0, offsetof(MatroskaTrackEncryption,algo), {.u = 0} },
564			{ MATROSKA_ID_ENCODINGENCKEYID, EBML_BIN, 0, 0, offsetof(MatroskaTrackEncryption,key_id) },
565			{ MATROSKA_ID_ENCODINGENCAESSETTINGS, EBML_NONE },
566			{ MATROSKA_ID_ENCODINGSIGALGO, EBML_NONE },
567			{ MATROSKA_ID_ENCODINGSIGHASHALGO, EBML_NONE },
568			{ MATROSKA_ID_ENCODINGSIGKEYID, EBML_NONE },
569			{ MATROSKA_ID_ENCODINGSIGNATURE, EBML_NONE },
570			CHILD_OF(matroska_track_encoding)
571			};
572			static EbmlSyntax matroska_track_encoding[] = {
573			{ MATROSKA_ID_ENCODINGSCOPE, EBML_UINT, 0, 0, offsetof(MatroskaTrackEncoding, scope), { .u = 1 } },
574			{ MATROSKA_ID_ENCODINGTYPE, EBML_UINT, 0, 0, offsetof(MatroskaTrackEncoding, type), { .u = 0 } },
575			{ MATROSKA_ID_ENCODINGCOMPRESSION, EBML_NEST, 0, 0, offsetof(MatroskaTrackEncoding, compression), { .n = matroska_track_encoding_compression } },
576			{ MATROSKA_ID_ENCODINGENCRYPTION, EBML_NEST, 0, 0, offsetof(MatroskaTrackEncoding, encryption), { .n = matroska_track_encoding_encryption } },
577			{ MATROSKA_ID_ENCODINGORDER, EBML_NONE },
578			CHILD_OF(matroska_track_encodings)
579			};
580
581			static EbmlSyntax matroska_track_encodings[] = {
582			{ MATROSKA_ID_TRACKCONTENTENCODING, EBML_NEST, 0, sizeof(MatroskaTrackEncoding), offsetof(MatroskaTrack, encodings), { .n = matroska_track_encoding } },
583			CHILD_OF(matroska_track)
584			};
585
586			static EbmlSyntax matroska_track_plane[] = {
587			{ MATROSKA_ID_TRACKPLANEUID, EBML_UINT, 0, 0, offsetof(MatroskaTrackPlane,uid) },
588			{ MATROSKA_ID_TRACKPLANETYPE, EBML_UINT, 0, 0, offsetof(MatroskaTrackPlane,type) },
589			CHILD_OF(matroska_track_combine_planes)
590			};
591
592			static EbmlSyntax matroska_track_combine_planes[] = {
593			{ MATROSKA_ID_TRACKPLANE, EBML_NEST, 0, sizeof(MatroskaTrackPlane), offsetof(MatroskaTrackOperation,combine_planes), {.n = matroska_track_plane} },
594			CHILD_OF(matroska_track_operation)
595			};
596
597			static EbmlSyntax matroska_track_operation[] = {
598			{ MATROSKA_ID_TRACKCOMBINEPLANES, EBML_NEST, 0, 0, 0, {.n = matroska_track_combine_planes} },
599			CHILD_OF(matroska_track)
600			};
601
602			static EbmlSyntax matroska_block_addition_mapping[] = {
603			{ MATROSKA_ID_BLKADDIDVALUE, EBML_UINT, 0, 0, offsetof(MatroskaBlockAdditionMapping, value) },
604			{ MATROSKA_ID_BLKADDIDNAME, EBML_STR, 0, 0, offsetof(MatroskaBlockAdditionMapping, name) },
605			{ MATROSKA_ID_BLKADDIDTYPE, EBML_UINT, 0, 0, offsetof(MatroskaBlockAdditionMapping, type), { .u = MATROSKA_BLOCK_ADD_ID_TYPE_DEFAULT } },
606			{ MATROSKA_ID_BLKADDIDEXTRADATA, EBML_BIN, 0, 0, offsetof(MatroskaBlockAdditionMapping, extradata) },
607			CHILD_OF(matroska_track)
608			};
609
610			static EbmlSyntax matroska_track[] = {
611			{ MATROSKA_ID_TRACKNUMBER, EBML_UINT, 0, 0, offsetof(MatroskaTrack, num) },
612			{ MATROSKA_ID_TRACKNAME, EBML_UTF8, 0, 0, offsetof(MatroskaTrack, name) },
613			{ MATROSKA_ID_TRACKUID, EBML_UINT, 0, 0, offsetof(MatroskaTrack, uid) },
614			{ MATROSKA_ID_TRACKTYPE, EBML_UINT, 0, 0, offsetof(MatroskaTrack, type) },
615			{ MATROSKA_ID_CODECID, EBML_STR, 0, 0, offsetof(MatroskaTrack, codec_id) },
616			{ MATROSKA_ID_CODECPRIVATE, EBML_BIN, 0, 0, offsetof(MatroskaTrack, codec_priv) },
617			{ MATROSKA_ID_CODECDELAY, EBML_UINT, 0, 0, offsetof(MatroskaTrack, codec_delay), { .u = 0 } },
618			{ MATROSKA_ID_TRACKLANGUAGE, EBML_STR, 0, 0, offsetof(MatroskaTrack, language), { .s = "eng" } },
619			{ MATROSKA_ID_TRACKDEFAULTDURATION, EBML_UINT, 0, 0, offsetof(MatroskaTrack, default_duration) },
620			{ MATROSKA_ID_TRACKTIMECODESCALE, EBML_FLOAT, 0, 0, offsetof(MatroskaTrack, time_scale), { .f = 1.0 } },
621			{ MATROSKA_ID_TRACKFLAGCOMMENTARY, EBML_UINT, 0, 0, offsetof(MatroskaTrack, flag_comment), { .u = 0 } },
622			{ MATROSKA_ID_TRACKFLAGDEFAULT, EBML_UINT, 0, 0, offsetof(MatroskaTrack, flag_default), { .u = 1 } },
623			{ MATROSKA_ID_TRACKFLAGFORCED, EBML_UINT, 0, 0, offsetof(MatroskaTrack, flag_forced), { .u = 0 } },
624			{ MATROSKA_ID_TRACKFLAGHEARINGIMPAIRED, EBML_UINT, 0, 0, offsetof(MatroskaTrack, flag_hearingimpaired), { .u = 0 } },
625			{ MATROSKA_ID_TRACKFLAGVISUALIMPAIRED, EBML_UINT, 0, 0, offsetof(MatroskaTrack, flag_visualimpaired), { .u = 0 } },
626			{ MATROSKA_ID_TRACKFLAGTEXTDESCRIPTIONS, EBML_UINT, 0, 0, offsetof(MatroskaTrack, flag_textdescriptions), { .u = 0 } },
627			{ MATROSKA_ID_TRACKFLAGORIGINAL, EBML_UINT, 1, 0, offsetof(MatroskaTrack, flag_original), {.u = 0 } },
628			{ MATROSKA_ID_TRACKVIDEO, EBML_NEST, 0, 0, offsetof(MatroskaTrack, video), { .n = matroska_track_video } },
629			{ MATROSKA_ID_TRACKAUDIO, EBML_NEST, 0, 0, offsetof(MatroskaTrack, audio), { .n = matroska_track_audio } },
630			{ MATROSKA_ID_TRACKOPERATION, EBML_NEST, 0, 0, offsetof(MatroskaTrack, operation), { .n = matroska_track_operation } },
631			{ MATROSKA_ID_TRACKCONTENTENCODINGS, EBML_NEST, 0, 0, 0, { .n = matroska_track_encodings } },
632			{ MATROSKA_ID_TRACKMAXBLKADDID, EBML_UINT, 0, 0, offsetof(MatroskaTrack, max_block_additional_id), { .u = 0 } },
633			{ MATROSKA_ID_TRACKBLKADDMAPPING, EBML_NEST, 0, sizeof(MatroskaBlockAdditionMapping), offsetof(MatroskaTrack, block_addition_mappings), { .n = matroska_block_addition_mapping } },
634			{ MATROSKA_ID_SEEKPREROLL, EBML_UINT, 0, 0, offsetof(MatroskaTrack, seek_preroll), { .u = 0 } },
635			{ MATROSKA_ID_TRACKFLAGENABLED, EBML_NONE },
636			{ MATROSKA_ID_TRACKFLAGLACING, EBML_NONE },
637			{ MATROSKA_ID_CODECNAME, EBML_NONE },
638			{ MATROSKA_ID_CODECDECODEALL, EBML_NONE },
639			{ MATROSKA_ID_CODECINFOURL, EBML_NONE },
640			{ MATROSKA_ID_CODECDOWNLOADURL, EBML_NONE },
641			{ MATROSKA_ID_TRACKMINCACHE, EBML_NONE },
642			{ MATROSKA_ID_TRACKMAXCACHE, EBML_NONE },
643			CHILD_OF(matroska_tracks)
644			};
645
646			static EbmlSyntax matroska_tracks[] = {
647			{ MATROSKA_ID_TRACKENTRY, EBML_NEST, 0, sizeof(MatroskaTrack), offsetof(MatroskaDemuxContext, tracks), { .n = matroska_track } },
648			CHILD_OF(matroska_segment)
649			};
650
651			static EbmlSyntax matroska_attachment[] = {
652			{ MATROSKA_ID_FILEUID, EBML_UINT, 0, 0, offsetof(MatroskaAttachment, uid) },
653			{ MATROSKA_ID_FILENAME, EBML_UTF8, 0, 0, offsetof(MatroskaAttachment, filename) },
654			{ MATROSKA_ID_FILEMIMETYPE, EBML_STR, 0, 0, offsetof(MatroskaAttachment, mime) },
655			{ MATROSKA_ID_FILEDATA, EBML_BIN, 0, 0, offsetof(MatroskaAttachment, bin) },
656			{ MATROSKA_ID_FILEDESC, EBML_UTF8, 0, 0, offsetof(MatroskaAttachment, description) },
657			CHILD_OF(matroska_attachments)
658			};
659
660			static EbmlSyntax matroska_attachments[] = {
661			{ MATROSKA_ID_ATTACHEDFILE, EBML_NEST, 0, sizeof(MatroskaAttachment), offsetof(MatroskaDemuxContext, attachments), { .n = matroska_attachment } },
662			CHILD_OF(matroska_segment)
663			};
664
665			static EbmlSyntax matroska_chapter_display[] = {
666			{ MATROSKA_ID_CHAPSTRING, EBML_UTF8, 0, 0, offsetof(MatroskaChapter, title) },
667			{ MATROSKA_ID_CHAPLANG, EBML_NONE },
668			{ MATROSKA_ID_CHAPCOUNTRY, EBML_NONE },
669			CHILD_OF(matroska_chapter_entry)
670			};
671
672			static EbmlSyntax matroska_chapter_entry[] = {
673			{ MATROSKA_ID_CHAPTERTIMESTART, EBML_UINT, 0, 0, offsetof(MatroskaChapter, start), { .u = AV_NOPTS_VALUE } },
674			{ MATROSKA_ID_CHAPTERTIMEEND, EBML_UINT, 0, 0, offsetof(MatroskaChapter, end), { .u = AV_NOPTS_VALUE } },
675			{ MATROSKA_ID_CHAPTERUID, EBML_UINT, 0, 0, offsetof(MatroskaChapter, uid) },
676			{ MATROSKA_ID_CHAPTERDISPLAY, EBML_NEST, 0, 0, 0, { .n = matroska_chapter_display } },
677			{ MATROSKA_ID_CHAPTERFLAGHIDDEN, EBML_NONE },
678			{ MATROSKA_ID_CHAPTERFLAGENABLED, EBML_NONE },
679			{ MATROSKA_ID_CHAPTERPHYSEQUIV, EBML_NONE },
680			{ MATROSKA_ID_CHAPTERATOM, EBML_NONE },
681			CHILD_OF(matroska_chapter)
682			};
683
684			static EbmlSyntax matroska_chapter[] = {
685			{ MATROSKA_ID_CHAPTERATOM, EBML_NEST, 0, sizeof(MatroskaChapter), offsetof(MatroskaDemuxContext, chapters), { .n = matroska_chapter_entry } },
686			{ MATROSKA_ID_EDITIONUID, EBML_NONE },
687			{ MATROSKA_ID_EDITIONFLAGHIDDEN, EBML_NONE },
688			{ MATROSKA_ID_EDITIONFLAGDEFAULT, EBML_NONE },
689			{ MATROSKA_ID_EDITIONFLAGORDERED, EBML_NONE },
690			CHILD_OF(matroska_chapters)
691			};
692
693			static EbmlSyntax matroska_chapters[] = {
694			{ MATROSKA_ID_EDITIONENTRY, EBML_NEST, 0, 0, 0, { .n = matroska_chapter } },
695			CHILD_OF(matroska_segment)
696			};
697
698			static EbmlSyntax matroska_index_pos[] = {
699			{ MATROSKA_ID_CUETRACK, EBML_UINT, 0, 0, offsetof(MatroskaIndexPos, track) },
700			{ MATROSKA_ID_CUECLUSTERPOSITION, EBML_UINT, 0, 0, offsetof(MatroskaIndexPos, pos) },
701			{ MATROSKA_ID_CUERELATIVEPOSITION,EBML_NONE },
702			{ MATROSKA_ID_CUEDURATION, EBML_NONE },
703			{ MATROSKA_ID_CUEBLOCKNUMBER, EBML_NONE },
704			CHILD_OF(matroska_index_entry)
705			};
706
707			static EbmlSyntax matroska_index_entry[] = {
708			{ MATROSKA_ID_CUETIME, EBML_UINT, 0, 0, offsetof(MatroskaIndex, time) },
709			{ MATROSKA_ID_CUETRACKPOSITION, EBML_NEST, 0, sizeof(MatroskaIndexPos), offsetof(MatroskaIndex, pos), { .n = matroska_index_pos } },
710			CHILD_OF(matroska_index)
711			};
712
713			static EbmlSyntax matroska_index[] = {
714			{ MATROSKA_ID_POINTENTRY, EBML_NEST, 0, sizeof(MatroskaIndex), offsetof(MatroskaDemuxContext, index), { .n = matroska_index_entry } },
715			CHILD_OF(matroska_segment)
716			};
717
718			static EbmlSyntax matroska_simpletag[] = {
719			{ MATROSKA_ID_TAGNAME, EBML_UTF8, 0, 0, offsetof(MatroskaTag, name) },
720			{ MATROSKA_ID_TAGSTRING, EBML_UTF8, 0, 0, offsetof(MatroskaTag, string) },
721			{ MATROSKA_ID_TAGLANG, EBML_STR, 0, 0, offsetof(MatroskaTag, lang), { .s = "und" } },
722			{ MATROSKA_ID_TAGDEFAULT, EBML_UINT, 0, 0, offsetof(MatroskaTag, def) },
723			{ MATROSKA_ID_TAGDEFAULT_BUG, EBML_UINT, 0, 0, offsetof(MatroskaTag, def) },
724			{ MATROSKA_ID_SIMPLETAG, EBML_NEST, 0, sizeof(MatroskaTag), offsetof(MatroskaTag, sub), { .n = matroska_simpletag } },
725			CHILD_OF(matroska_tag)
726			};
727
728			static EbmlSyntax matroska_tagtargets[] = {
729			{ MATROSKA_ID_TAGTARGETS_TYPE, EBML_STR, 0, 0, offsetof(MatroskaTagTarget, type) },
730			{ MATROSKA_ID_TAGTARGETS_TYPEVALUE, EBML_UINT, 0, 0, offsetof(MatroskaTagTarget, typevalue), { .u = 50 } },
731			{ MATROSKA_ID_TAGTARGETS_TRACKUID, EBML_UINT, 0, 0, offsetof(MatroskaTagTarget, trackuid), { .u = 0 } },
732			{ MATROSKA_ID_TAGTARGETS_CHAPTERUID, EBML_UINT, 0, 0, offsetof(MatroskaTagTarget, chapteruid), { .u = 0 } },
733			{ MATROSKA_ID_TAGTARGETS_ATTACHUID, EBML_UINT, 0, 0, offsetof(MatroskaTagTarget, attachuid), { .u = 0 } },
734			CHILD_OF(matroska_tag)
735			};
736
737			static EbmlSyntax matroska_tag[] = {
738			{ MATROSKA_ID_SIMPLETAG, EBML_NEST, 0, sizeof(MatroskaTag), offsetof(MatroskaTags, tag), { .n = matroska_simpletag } },
739			{ MATROSKA_ID_TAGTARGETS, EBML_NEST, 0, 0, offsetof(MatroskaTags, target), { .n = matroska_tagtargets } },
740			CHILD_OF(matroska_tags)
741			};
742
743			static EbmlSyntax matroska_tags[] = {
744			{ MATROSKA_ID_TAG, EBML_NEST, 0, sizeof(MatroskaTags), offsetof(MatroskaDemuxContext, tags), { .n = matroska_tag } },
745			CHILD_OF(matroska_segment)
746			};
747
748			static EbmlSyntax matroska_seekhead_entry[] = {
749			{ MATROSKA_ID_SEEKID, EBML_UINT, 0, 0, offsetof(MatroskaSeekhead, id) },
750			{ MATROSKA_ID_SEEKPOSITION, EBML_UINT, 0, 0, offsetof(MatroskaSeekhead, pos), { .u = -1 } },
751			CHILD_OF(matroska_seekhead)
752			};
753
754			static EbmlSyntax matroska_seekhead[] = {
755			{ MATROSKA_ID_SEEKENTRY, EBML_NEST, 0, sizeof(MatroskaSeekhead), offsetof(MatroskaDemuxContext, seekhead), { .n = matroska_seekhead_entry } },
756			CHILD_OF(matroska_segment)
757			};
758
759			static EbmlSyntax matroska_segment[] = {
760			{ MATROSKA_ID_CLUSTER, EBML_STOP },
761			{ MATROSKA_ID_INFO, EBML_LEVEL1, 0, 0, 0, { .n = matroska_info } },
762			{ MATROSKA_ID_TRACKS, EBML_LEVEL1, 0, 0, 0, { .n = matroska_tracks } },
763			{ MATROSKA_ID_ATTACHMENTS, EBML_LEVEL1, 0, 0, 0, { .n = matroska_attachments } },
764			{ MATROSKA_ID_CHAPTERS, EBML_LEVEL1, 0, 0, 0, { .n = matroska_chapters } },
765			{ MATROSKA_ID_CUES, EBML_LEVEL1, 0, 0, 0, { .n = matroska_index } },
766			{ MATROSKA_ID_TAGS, EBML_LEVEL1, 0, 0, 0, { .n = matroska_tags } },
767			{ MATROSKA_ID_SEEKHEAD, EBML_LEVEL1, 0, 0, 0, { .n = matroska_seekhead } },
768			{ 0 } /* We don't want to go back to level 0, so don't add the parent. */
769			};
770
771			static EbmlSyntax matroska_segments[] = {
772			{ MATROSKA_ID_SEGMENT, EBML_NEST, 0, 0, 0, { .n = matroska_segment } },
773			{ 0 }
774			};
775
776			static EbmlSyntax matroska_blockmore[] = {
777			{ MATROSKA_ID_BLOCKADDID, EBML_UINT, 0, 0, offsetof(MatroskaBlockMore,additional_id), { .u = MATROSKA_BLOCK_ADD_ID_OPAQUE } },
778			{ MATROSKA_ID_BLOCKADDITIONAL, EBML_BIN, 0, 0, offsetof(MatroskaBlockMore,additional) },
779			CHILD_OF(matroska_blockadditions)
780			};
781
782			static EbmlSyntax matroska_blockadditions[] = {
783			{ MATROSKA_ID_BLOCKMORE, EBML_NEST, 0, sizeof(MatroskaBlockMore), offsetof(MatroskaBlock, blockmore), { .n = matroska_blockmore } },
784			CHILD_OF(matroska_blockgroup)
785			};
786
787			static EbmlSyntax matroska_blockgroup[] = {
788			{ MATROSKA_ID_BLOCK, EBML_BIN, 0, 0, offsetof(MatroskaBlock, bin) },
789			{ MATROSKA_ID_BLOCKADDITIONS, EBML_NEST, 0, 0, 0, { .n = matroska_blockadditions} },
790			{ MATROSKA_ID_BLOCKDURATION, EBML_UINT, 0, 0, offsetof(MatroskaBlock, duration) },
791			{ MATROSKA_ID_DISCARDPADDING, EBML_SINT, 0, 0, offsetof(MatroskaBlock, discard_padding) },
792			{ MATROSKA_ID_BLOCKREFERENCE, EBML_SINT, 1, 0, offsetof(MatroskaBlock, reference) },
793			{ MATROSKA_ID_CODECSTATE, EBML_NONE },
794			{ 1, EBML_UINT, 0, 0, offsetof(MatroskaBlock, non_simple), { .u = 1 } },
795			CHILD_OF(matroska_cluster_parsing)
796			};
797
798			// The following array contains SimpleBlock and BlockGroup twice
799			// in order to reuse the other values for matroska_cluster_enter.
800			static EbmlSyntax matroska_cluster_parsing[] = {
801			{ MATROSKA_ID_SIMPLEBLOCK, EBML_BIN, 0, 0, offsetof(MatroskaBlock, bin) },
802			{ MATROSKA_ID_BLOCKGROUP, EBML_NEST, 0, 0, 0, { .n = matroska_blockgroup } },
803			{ MATROSKA_ID_CLUSTERTIMECODE, EBML_UINT, 0, 0, offsetof(MatroskaCluster, timecode) },
804			{ MATROSKA_ID_SIMPLEBLOCK, EBML_STOP },
805			{ MATROSKA_ID_BLOCKGROUP, EBML_STOP },
806			{ MATROSKA_ID_CLUSTERPOSITION, EBML_NONE },
807			{ MATROSKA_ID_CLUSTERPREVSIZE, EBML_NONE },
808			CHILD_OF(matroska_segment)
809			};
810
811			static EbmlSyntax matroska_cluster_enter[] = {
812			{ MATROSKA_ID_CLUSTER, EBML_NEST, 0, 0, 0, { .n = &matroska_cluster_parsing[2] } },
813			{ 0 }
814			};
815			#undef CHILD_OF
816
817			static const CodecMime mkv_image_mime_tags[] = {
818			{"image/gif" , AV_CODEC_ID_GIF},
819			{"image/jpeg" , AV_CODEC_ID_MJPEG},
820			{"image/png" , AV_CODEC_ID_PNG},
821			{"image/tiff" , AV_CODEC_ID_TIFF},
822
823			{"" , AV_CODEC_ID_NONE}
824			};
825
826			static const CodecMime mkv_mime_tags[] = {
827			{"application/x-truetype-font", AV_CODEC_ID_TTF},
828			{"application/x-font" , AV_CODEC_ID_TTF},
829			{"application/vnd.ms-opentype", AV_CODEC_ID_OTF},
830			{"binary" , AV_CODEC_ID_BIN_DATA},
831
832			{"" , AV_CODEC_ID_NONE}
833			};
834
835			static const char * const matroska_video_stereo_plane[MATROSKA_VIDEO_STEREO_PLANE_COUNT] = {
836			"left",
837			"right",
838			"background",
839			};
840
841			static const char *const matroska_doctypes[] = { "matroska", "webm" };
842
843			/*
844			* This function prepares the status for parsing of level 1 elements.
845			*/
846		237	static int matroska_reset_status(MatroskaDemuxContext *matroska,
847			uint32_t id, int64_t position)
848			{
849		237	int64_t err = 0;
850	2/2 ✓ Branch 0 taken 224 times. ✓ Branch 1 taken 13 times.	237	if (position >= 0) {
851		224	err = avio_seek(matroska->ctx->pb, position, SEEK_SET);
852	1/2 ✓ Branch 0 taken 224 times. ✗ Branch 1 not taken.	224	if (err > 0)
853		224	err = 0;
854			} else
855		13	position = avio_tell(matroska->ctx->pb);
856
857		237	matroska->current_id = id;
858		237	matroska->num_levels = 1;
859		237	matroska->unknown_count = 0;
860		237	matroska->resync_pos = position;
861	2/2 ✓ Branch 0 taken 63 times. ✓ Branch 1 taken 174 times.	237	if (id)
862		63	matroska->resync_pos -= (av_log2(id) + 7) / 8;
863
864		237	return err;
865			}
866
867		13	static int matroska_resync(MatroskaDemuxContext *matroska, int64_t last_pos)
868			{
869		13	AVIOContext *pb = matroska->ctx->pb;
870			uint32_t id;
871
872			/* Try to seek to the last position to resync from. If this doesn't work,
873			* we resync from the earliest position available: The start of the buffer. */
874	3/4 ✓ Branch 1 taken 13 times. ✗ Branch 2 not taken. ✓ Branch 4 taken 2 times. ✓ Branch 5 taken 11 times.	13	if (last_pos < avio_tell(pb) && avio_seek(pb, last_pos + 1, SEEK_SET) < 0) {
875		2	av_log(matroska->ctx, AV_LOG_WARNING,
876			"Seek to desired resync point failed. Seeking to "
877			"earliest point available instead.\n");
878	1/2 ✓ Branch 1 taken 2 times. ✗ Branch 2 not taken.	2	avio_seek(pb, FFMAX(avio_tell(pb) + (pb->buffer - pb->buf_ptr),
879			last_pos + 1), SEEK_SET);
880			}
881
882		13	id = avio_rb32(pb);
883
884			// try to find a toplevel element
885	2/2 ✓ Branch 1 taken 690589 times. ✓ Branch 2 taken 10 times.	690599	while (!avio_feof(pb)) {
886	3/6 ✓ Branch 0 taken 690589 times. ✗ Branch 1 not taken. ✓ Branch 2 taken 690589 times. ✗ Branch 3 not taken. ✓ Branch 4 taken 690589 times. ✗ Branch 5 not taken.	690589	if (id == MATROSKA_ID_INFO || id == MATROSKA_ID_TRACKS ||
887	3/4 ✓ Branch 0 taken 690589 times. ✗ Branch 1 not taken. ✓ Branch 2 taken 690587 times. ✓ Branch 3 taken 2 times.	690589	id == MATROSKA_ID_CUES || id == MATROSKA_ID_TAGS ||
888	3/4 ✓ Branch 0 taken 690587 times. ✗ Branch 1 not taken. ✓ Branch 2 taken 690586 times. ✓ Branch 3 taken 1 times.	690587	id == MATROSKA_ID_SEEKHEAD || id == MATROSKA_ID_ATTACHMENTS ||
889	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 690586 times.	690586	id == MATROSKA_ID_CLUSTER || id == MATROSKA_ID_CHAPTERS) {
890			/* Prepare the context for parsing of a level 1 element. */
891		3	matroska_reset_status(matroska, id, -1);
892			/* Given that we are here means that an error has occurred,
893			* so treat the segment as unknown length in order not to
894			* discard valid data that happens to be beyond the designated
895			* end of the segment. */
896		3	matroska->levels[0].length = EBML_UNKNOWN_LENGTH;
897		3	return 0;
898			}
899		690586	id = (id << 8) | avio_r8(pb);
900			}
901
902		10	matroska->done = 1;
903	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 10 times.	10	return pb->error ? pb->error : AVERROR_EOF;
904			}
905
906			/*
907			* Read: an "EBML number", which is defined as a variable-length
908			* array of bytes. The first byte indicates the length by giving a
909			* number of 0-bits followed by a one. The position of the first
910			* "one" bit inside the first byte indicates the length of this
911			* number.
912			* Returns: number of bytes read, < 0 on error
913			*/
914		157622	static int ebml_read_num(MatroskaDemuxContext *matroska, AVIOContext *pb,
915			int max_size, uint64_t *number, int eof_forbidden)
916			{
917		157622	int read, n = 1;
918			uint64_t total;
919			int64_t pos;
920
921			/* The first byte tells us the length in bytes - except when it is zero. */
922		157622	total = avio_r8(pb);
923	2/2 ✓ Branch 0 taken 14 times. ✓ Branch 1 taken 157608 times.	157622	if (pb->eof_reached)
924		14	goto err;
925
926			/* get the length of the EBML number */
927		157608	read = 8 - ff_log2_tab[total];
928
929	2/4 ✓ Branch 0 taken 157608 times. ✗ Branch 1 not taken. ✗ Branch 2 not taken. ✓ Branch 3 taken 157608 times.	157608	if (!total || read > max_size) {
930		✗	pos = avio_tell(pb) - 1;
931		✗	if (!total) {
932		✗	av_log(matroska->ctx, AV_LOG_ERROR,
933			"0x00 at pos %"PRId64" (0x%"PRIx64") invalid as first byte "
934			"of an EBML number\n", pos, pos);
935			} else {
936		✗	av_log(matroska->ctx, AV_LOG_ERROR,
937			"Length %d indicated by an EBML number's first byte 0x%02x "
938			"at pos %"PRId64" (0x%"PRIx64") exceeds max length %d.\n",
939		✗	read, (uint8_t) total, pos, pos, max_size);
940			}
941		✗	return AVERROR_INVALIDDATA;
942			}
943
944			/* read out length */
945		157608	total ^= 1 << ff_log2_tab[total];
946	2/2 ✓ Branch 0 taken 80016 times. ✓ Branch 1 taken 157608 times.	237624	while (n++ < read)
947		80016	total = (total << 8) | avio_r8(pb);
948
949	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 157608 times.	157608	if (pb->eof_reached) {
950		✗	eof_forbidden = 1;
951		✗	goto err;
952			}
953
954		157608	*number = total;
955
956		157608	return read;
957
958		14	err:
959		14	pos = avio_tell(pb);
960	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 14 times.	14	if (pb->error) {
961		✗	av_log(matroska->ctx, AV_LOG_ERROR,
962			"Read error at pos. %"PRIu64" (0x%"PRIx64")\n",
963			pos, pos);
964		✗	return pb->error;
965			}
966	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 14 times.	14	if (eof_forbidden) {
967		✗	av_log(matroska->ctx, AV_LOG_ERROR, "File ended prematurely "
968			"at pos. %"PRIu64" (0x%"PRIx64")\n", pos, pos);
969		✗	return AVERROR(EIO);
970			}
971		14	return AVERROR_EOF;
972			}
973
974			/**
975			* Read a EBML length value.
976			* This needs special handling for the "unknown length" case which has multiple
977			* encodings.
978			*/
979		62803	static int ebml_read_length(MatroskaDemuxContext *matroska, AVIOContext *pb,
980			uint64_t *number)
981			{
982		62803	int res = ebml_read_num(matroska, pb, 8, number, 1);
983	3/4 ✓ Branch 0 taken 62803 times. ✗ Branch 1 not taken. ✓ Branch 2 taken 17 times. ✓ Branch 3 taken 62786 times.	62803	if (res > 0 && *number + 1 == 1ULL << (7 * res))
984		17	*number = EBML_UNKNOWN_LENGTH;
985		62803	return res;
986			}
987
988			/*
989			* Read the next element as an unsigned int.
990			* Returns NEEDS_CHECKING unless size == 0.
991			*/
992		12835	static int ebml_read_uint(AVIOContext *pb, int size,
993			uint64_t default_value, uint64_t *num)
994			{
995		12835	int n = 0;
996
997	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 12835 times.	12835	if (size == 0) {
998		✗	*num = default_value;
999		✗	return 0;
1000			}
1001			/* big-endian ordering; build up number */
1002		12835	*num = 0;
1003	2/2 ✓ Branch 0 taken 32120 times. ✓ Branch 1 taken 12835 times.	44955	while (n++ < size)
1004		32120	*num = (*num << 8) | avio_r8(pb);
1005
1006		12835	return NEEDS_CHECKING;
1007			}
1008
1009			/*
1010			* Read the next element as a signed int.
1011			* Returns NEEDS_CHECKING unless size == 0.
1012			*/
1013		276	static int ebml_read_sint(AVIOContext *pb, int size,
1014			int64_t default_value, int64_t *num)
1015			{
1016		276	int n = 1;
1017
1018	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 276 times.	276	if (size == 0) {
1019		✗	*num = default_value;
1020		✗	return 0;
1021			} else {
1022		276	*num = sign_extend(avio_r8(pb), 8);
1023
1024			/* big-endian ordering; build up number */
1025	2/2 ✓ Branch 0 taken 158 times. ✓ Branch 1 taken 276 times.	434	while (n++ < size)
1026		158	*num = ((uint64_t)*num << 8) | avio_r8(pb);
1027			}
1028
1029		276	return NEEDS_CHECKING;
1030			}
1031
1032			/*
1033			* Read the next element as a float.
1034			* Returns 0 if size == 0, NEEDS_CHECKING or < 0 on obvious failure.
1035			*/
1036		936	static int ebml_read_float(AVIOContext *pb, int size,
1037			double default_value, double *num)
1038			{
1039	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 936 times.	936	if (size == 0) {
1040		✗	*num = default_value;
1041		✗	return 0;
1042	2/2 ✓ Branch 0 taken 232 times. ✓ Branch 1 taken 704 times.	936	} else if (size == 4) {
1043		232	*num = av_int2float(avio_rb32(pb));
1044	1/2 ✓ Branch 0 taken 704 times. ✗ Branch 1 not taken.	704	} else if (size == 8) {
1045		704	*num = av_int2double(avio_rb64(pb));
1046			} else
1047		✗	return AVERROR_INVALIDDATA;
1048
1049		936	return NEEDS_CHECKING;
1050			}
1051
1052			/*
1053			* Read the next element as an ASCII string.
1054			* 0 is success, < 0 or NEEDS_CHECKING is failure.
1055			*/
1056		3176	static int ebml_read_ascii(AVIOContext *pb, int size,
1057			const char *default_value, char **str)
1058			{
1059			char *res;
1060			int ret;
1061
1062	1/4 ✗ Branch 0 not taken. ✓ Branch 1 taken 3176 times. ✗ Branch 2 not taken. ✗ Branch 3 not taken.	3176	if (size == 0 && default_value) {
1063		✗	res = av_strdup(default_value);
1064		✗	if (!res)
1065		✗	return AVERROR(ENOMEM);
1066			} else {
1067			/* EBML strings are usually not 0-terminated, so we allocate one
1068			* byte more, read the string and NUL-terminate it ourselves. */
1069	1/2 ✗ Branch 1 not taken. ✓ Branch 2 taken 3176 times.	3176	if (!(res = av_malloc(size + 1)))
1070		✗	return AVERROR(ENOMEM);
1071	1/2 ✗ Branch 1 not taken. ✓ Branch 2 taken 3176 times.	3176	if ((ret = avio_read(pb, (uint8_t *) res, size)) != size) {
1072		✗	av_free(res);
1073		✗	return ret < 0 ? ret : NEEDS_CHECKING;
1074			}
1075		3176	(res)[size] = '\0';
1076			}
1077		3176	av_free(*str);
1078		3176	*str = res;
1079
1080		3176	return 0;
1081			}
1082
1083			/*
1084			* Read the next element as binary data.
1085			* 0 is success, < 0 or NEEDS_CHECKING is failure.
1086			*/
1087		32015	static int ebml_read_binary(AVIOContext *pb, int length,
1088			int64_t pos, EbmlBin *bin)
1089			{
1090			int ret;
1091
1092		32015	ret = av_buffer_realloc(&bin->buf, length + AV_INPUT_BUFFER_PADDING_SIZE);
1093	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 32015 times.	32015	if (ret < 0)
1094		✗	return ret;
1095		32015	memset(bin->buf->data + length, 0, AV_INPUT_BUFFER_PADDING_SIZE);
1096
1097		32015	bin->data = bin->buf->data;
1098		32015	bin->size = length;
1099		32015	bin->pos = pos;
1100	2/2 ✓ Branch 1 taken 10 times. ✓ Branch 2 taken 32005 times.	32015	if ((ret = avio_read(pb, bin->data, length)) != length) {
1101		10	av_buffer_unref(&bin->buf);
1102		10	bin->data = NULL;
1103		10	bin->size = 0;
1104	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 10 times.	10	return ret < 0 ? ret : NEEDS_CHECKING;
1105			}
1106
1107		32005	return 0;
1108			}
1109
1110			/*
1111			* Read the next element, but only the header. The contents
1112			* are supposed to be sub-elements which can be read separately.
1113			* 0 is success, < 0 is failure.
1114			*/
1115		9682	static int ebml_read_master(MatroskaDemuxContext *matroska,
1116			uint64_t length, int64_t pos)
1117			{
1118			MatroskaLevel *level;
1119
1120	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 9682 times.	9682	if (matroska->num_levels >= EBML_MAX_DEPTH) {
1121		✗	av_log(matroska->ctx, AV_LOG_ERROR,
1122			"File moves beyond max. allowed depth (%d)\n", EBML_MAX_DEPTH);
1123		✗	return AVERROR(ENOSYS);
1124			}
1125
1126		9682	level = &matroska->levels[matroska->num_levels++];
1127		9682	level->start = pos;
1128		9682	level->length = length;
1129
1130		9682	return 0;
1131			}
1132
1133			/*
1134			* Read a signed "EBML number"
1135			* Return: number of bytes processed, < 0 on error
1136			*/
1137		414	static int matroska_ebmlnum_sint(MatroskaDemuxContext *matroska,
1138			AVIOContext *pb, int64_t *num)
1139			{
1140			uint64_t unum;
1141			int res;
1142
1143			/* read as unsigned number first */
1144	1/2 ✗ Branch 1 not taken. ✓ Branch 2 taken 414 times.	414	if ((res = ebml_read_num(matroska, pb, 8, &unum, 1)) < 0)
1145		✗	return res;
1146
1147			/* make signed (weird way) */
1148		414	*num = unum - ((1LL << (7 * res - 1)) - 1);
1149
1150		414	return res;
1151			}
1152
1153			static int ebml_parse(MatroskaDemuxContext *matroska,
1154			EbmlSyntax *syntax, void *data);
1155
1156		64871	static EbmlSyntax *ebml_parse_id(EbmlSyntax *syntax, uint32_t id)
1157			{
1158			int i;
1159
1160			// Whoever touches this should be aware of the duplication
1161			// existing in matroska_cluster_parsing.
1162	2/2 ✓ Branch 0 taken 145215 times. ✓ Branch 1 taken 1109 times.	146324	for (i = 0; syntax[i].id; i++)
1163	2/2 ✓ Branch 0 taken 63762 times. ✓ Branch 1 taken 81453 times.	145215	if (id == syntax[i].id)
1164		63762	break;
1165
1166		64871	return &syntax[i];
1167			}
1168
1169		9682	static int ebml_parse_nest(MatroskaDemuxContext *matroska, EbmlSyntax *syntax,
1170			void *data)
1171			{
1172			int res;
1173
1174	1/2 ✓ Branch 0 taken 9682 times. ✗ Branch 1 not taken.	9682	if (data) {
1175	2/2 ✓ Branch 0 taken 59440 times. ✓ Branch 1 taken 9682 times.	69122	for (int i = 0; syntax[i].id; i++) {
1176		59440	void *dst = (char *)data + syntax[i].data_offset;
1177	5/5 ✓ Branch 0 taken 25687 times. ✓ Branch 1 taken 1158 times. ✓ Branch 2 taken 1738 times. ✓ Branch 3 taken 5181 times. ✓ Branch 4 taken 25676 times.	59440	switch (syntax[i].type) {
1178		25687	case EBML_UINT:
1179		25687	*(uint64_t *)dst = syntax[i].def.u;
1180		25687	break;
1181		1158	case EBML_SINT:
1182		1158	*(int64_t *) dst = syntax[i].def.i;
1183		1158	break;
1184		1738	case EBML_FLOAT:
1185		1738	*(double *) dst = syntax[i].def.f;
1186		1738	break;
1187		5181	case EBML_STR:
1188			case EBML_UTF8:
1189			// the default may be NULL
1190	2/2 ✓ Branch 0 taken 1583 times. ✓ Branch 1 taken 3598 times.	5181	if (syntax[i].def.s) {
1191		1583	*(char**)dst = av_strdup(syntax[i].def.s);
1192	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 1583 times.	1583	if (!*(char**)dst)
1193		✗	return AVERROR(ENOMEM);
1194			}
1195		5181	break;
1196			}
1197			}
1198
1199	2/2 ✓ Branch 0 taken 66 times. ✓ Branch 1 taken 9616 times.	9682	if (!matroska->levels[matroska->num_levels - 1].length) {
1200		66	matroska->num_levels--;
1201		66	return 0;
1202			}
1203			}
1204
1205			do {
1206		30334	res = ebml_parse(matroska, syntax, data);
1207	2/2 ✓ Branch 0 taken 20718 times. ✓ Branch 1 taken 9616 times.	30334	} while (!res);
1208
1209	2/2 ✓ Branch 0 taken 1288 times. ✓ Branch 1 taken 8328 times.	9616	return res == LEVEL_ENDED ? 0 : res;
1210			}
1211
1212		2878	static int is_ebml_id_valid(uint32_t id)
1213			{
1214			// Due to endian nonsense in Matroska, the highest byte with any bits set
1215			// will contain the leading length bit. This bit in turn identifies the
1216			// total byte length of the element by its position within the byte.
1217		2878	unsigned int bits = av_log2(id);
1218	2/4 ✓ Branch 0 taken 2878 times. ✗ Branch 1 not taken. ✓ Branch 2 taken 2878 times. ✗ Branch 3 not taken.	2878	return id && (bits + 7) / 8 == (8 - bits % 8);
1219			}
1220
1221			/*
1222			* Allocate and return the entry for the level1 element with the given ID. If
1223			* an entry already exists, return the existing entry.
1224			*/
1225		2878	static MatroskaLevel1Element *matroska_find_level1_elem(MatroskaDemuxContext *matroska,
1226			uint32_t id, int64_t pos)
1227			{
1228			int i;
1229			MatroskaLevel1Element *elem;
1230
1231	1/2 ✗ Branch 1 not taken. ✓ Branch 2 taken 2878 times.	2878	if (!is_ebml_id_valid(id))
1232		✗	return NULL;
1233
1234			// Some files link to all clusters; useless.
1235	2/2 ✓ Branch 0 taken 25 times. ✓ Branch 1 taken 2853 times.	2878	if (id == MATROSKA_ID_CLUSTER)
1236		25	return NULL;
1237
1238			// There can be multiple SeekHeads and Tags.
1239	2/2 ✓ Branch 0 taken 6218 times. ✓ Branch 1 taken 1824 times.	8042	for (i = 0; i < matroska->num_level1_elems; i++) {
1240	2/2 ✓ Branch 0 taken 1057 times. ✓ Branch 1 taken 5161 times.	6218	if (matroska->level1_elems[i].id == id) {
1241	3/4 ✓ Branch 0 taken 28 times. ✓ Branch 1 taken 1029 times. ✗ Branch 2 not taken. ✓ Branch 3 taken 28 times.	1057	if (matroska->level1_elems[i].pos == pos ||
1242		✗	id != MATROSKA_ID_SEEKHEAD && id != MATROSKA_ID_TAGS)
1243		1029	return &matroska->level1_elems[i];
1244			}
1245			}
1246
1247			// Only a completely broken file would have more elements.
1248	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 1824 times.	1824	if (matroska->num_level1_elems >= FF_ARRAY_ELEMS(matroska->level1_elems)) {
1249		✗	av_log(matroska->ctx, AV_LOG_ERROR, "Too many level1 elements.\n");
1250		✗	return NULL;
1251			}
1252
1253		1824	elem = &matroska->level1_elems[matroska->num_level1_elems++];
1254		1824	*elem = (MatroskaLevel1Element){.id = id};
1255
1256		1824	return elem;
1257			}
1258
1259		64882	static int ebml_parse(MatroskaDemuxContext *matroska,
1260			EbmlSyntax *syntax, void *data)
1261			{
1262			static const uint64_t max_lengths[EBML_TYPE_COUNT] = {
1263			// Forbid unknown-length EBML_NONE elements.
1264			[EBML_NONE] = EBML_UNKNOWN_LENGTH - 1,
1265			[EBML_UINT] = 8,
1266			[EBML_SINT] = 8,
1267			[EBML_FLOAT] = 8,
1268			// max. 16 MB for strings
1269			[EBML_STR] = 0x1000000,
1270			[EBML_UTF8] = 0x1000000,
1271			// max. 256 MB for binary data
1272			[EBML_BIN] = 0x10000000,
1273			// no limits for anything else
1274			};
1275		64882	AVIOContext *pb = matroska->ctx->pb;
1276			uint32_t id;
1277			uint64_t length;
1278		64882	int64_t pos = avio_tell(pb), pos_alt;
1279		64882	int res, update_pos = 1, level_check;
1280			MatroskaLevel1Element *level1_elem;
1281	2/2 ✓ Branch 0 taken 64040 times. ✓ Branch 1 taken 842 times.	64882	MatroskaLevel *level = matroska->num_levels ? &matroska->levels[matroska->num_levels - 1] : NULL;
1282
1283	2/2 ✓ Branch 0 taken 62736 times. ✓ Branch 1 taken 2146 times.	64882	if (!matroska->current_id) {
1284			uint64_t id64;
1285		62736	res = ebml_read_num(matroska, pb, 4, &id64, 0);
1286	2/2 ✓ Branch 0 taken 14 times. ✓ Branch 1 taken 62722 times.	62736	if (res < 0) {
1287	2/4 ✓ Branch 0 taken 14 times. ✗ Branch 1 not taken. ✓ Branch 2 taken 14 times. ✗ Branch 3 not taken.	14	if (pb->eof_reached && res == AVERROR_EOF) {
1288	2/2 ✓ Branch 0 taken 4 times. ✓ Branch 1 taken 10 times.	14	if (matroska->is_live)
1289			// in live mode, finish parsing if EOF is reached.
1290		14	return 1;
1291	2/4 ✓ Branch 0 taken 10 times. ✗ Branch 1 not taken. ✓ Branch 3 taken 10 times. ✗ Branch 4 not taken.	10	if (level && pos == avio_tell(pb)) {
1292	1/2 ✓ Branch 0 taken 10 times. ✗ Branch 1 not taken.	10	if (level->length == EBML_UNKNOWN_LENGTH) {
1293			// Unknown-length levels automatically end at EOF.
1294		10	matroska->num_levels--;
1295		10	return LEVEL_ENDED;
1296			} else {
1297		✗	av_log(matroska->ctx, AV_LOG_ERROR, "File ended prematurely "
1298			"at pos. %"PRIu64" (0x%"PRIx64")\n", pos, pos);
1299			}
1300			}
1301			}
1302		✗	return res;
1303			}
1304		62722	matroska->current_id = id64 | 1 << 7 * res;
1305		62722	pos_alt = pos + res;
1306			} else {
1307		2146	pos_alt = pos;
1308		2146	pos -= (av_log2(matroska->current_id) + 7) / 8;
1309			}
1310
1311		64868	id = matroska->current_id;
1312
1313		64868	syntax = ebml_parse_id(syntax, id);
1314	6/6 ✓ Branch 0 taken 1109 times. ✓ Branch 1 taken 63759 times. ✓ Branch 2 taken 779 times. ✓ Branch 3 taken 330 times. ✓ Branch 4 taken 170 times. ✓ Branch 5 taken 609 times.	64868	if (!syntax->id && id != EBML_ID_VOID && id != EBML_ID_CRC32) {
1315	3/4 ✓ Branch 0 taken 170 times. ✗ Branch 1 not taken. ✓ Branch 2 taken 7 times. ✓ Branch 3 taken 163 times.	170	if (level && level->length == EBML_UNKNOWN_LENGTH) {
1316			// Unknown-length levels end when an element from an upper level
1317			// in the hierarchy is encountered.
1318	2/2 ✓ Branch 0 taken 3 times. ✓ Branch 1 taken 4 times.	7	while (syntax->def.n) {
1319		3	syntax = ebml_parse_id(syntax->def.n, id);
1320	1/2 ✓ Branch 0 taken 3 times. ✗ Branch 1 not taken.	3	if (syntax->id) {
1321		3	matroska->num_levels--;
1322		3	return LEVEL_ENDED;
1323			}
1324			// We have not encountered a known element; syntax is a sentinel.
1325			av_assert1(syntax->type == EBML_NONE);
1326			};
1327			}
1328
1329		167	av_log(matroska->ctx, AV_LOG_DEBUG, "Unknown entry 0x%"PRIX32" at pos. "
1330			"%"PRId64"\n", id, pos);
1331		167	update_pos = 0; /* Don't update resync_pos as an error might have happened. */
1332			}
1333
1334	2/2 ✓ Branch 0 taken 63587 times. ✓ Branch 1 taken 1278 times.	64865	if (data) {
1335		63587	data = (char *) data + syntax->data_offset;
1336	2/2 ✓ Branch 0 taken 4788 times. ✓ Branch 1 taken 58799 times.	63587	if (syntax->list_elem_size) {
1337		4788	EbmlList *list = data;
1338			void *newelem;
1339
1340	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 4788 times.	4788	if ((unsigned)list->nb_elem + 1 >= UINT_MAX / syntax->list_elem_size)
1341		✗	return AVERROR(ENOMEM);
1342	2/2 ✓ Branch 0 taken 501 times. ✓ Branch 1 taken 4287 times.	4788	if (syntax->id == MATROSKA_ID_TRACKENTRY &&
1343	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 501 times.	501	list->nb_elem >= matroska->ctx->max_streams) {
1344		✗	av_log(matroska->ctx, AV_LOG_ERROR,
1345			"Number of tracks exceeds max_streams (%d)\n",
1346		✗	matroska->ctx->max_streams);
1347		✗	return AVERROR(EINVAL);
1348			}
1349		4788	newelem = av_fast_realloc(list->elem,
1350			&list->alloc_elem_size,
1351		4788	(list->nb_elem + 1) * syntax->list_elem_size);
1352	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 4788 times.	4788	if (!newelem)
1353		✗	return AVERROR(ENOMEM);
1354		4788	list->elem = newelem;
1355		4788	data = (char *) list->elem + list->nb_elem * syntax->list_elem_size;
1356		4788	memset(data, 0, syntax->list_elem_size);
1357		4788	list->nb_elem++;
1358			}
1359			}
1360
1361	2/2 ✓ Branch 0 taken 62714 times. ✓ Branch 1 taken 2151 times.	64865	if (syntax->type != EBML_STOP) {
1362		62714	matroska->current_id = 0;
1363	1/2 ✗ Branch 1 not taken. ✓ Branch 2 taken 62714 times.	62714	if ((res = ebml_read_length(matroska, pb, &length)) < 0)
1364		✗	return res;
1365
1366		62714	pos_alt += res;
1367
1368	2/2 ✓ Branch 0 taken 61872 times. ✓ Branch 1 taken 842 times.	62714	if (matroska->num_levels > 0) {
1369	2/2 ✓ Branch 0 taken 61866 times. ✓ Branch 1 taken 6 times.	61872	if (length != EBML_UNKNOWN_LENGTH &&
1370	2/2 ✓ Branch 0 taken 61728 times. ✓ Branch 1 taken 138 times.	123594	level->length != EBML_UNKNOWN_LENGTH) {
1371		61728	uint64_t elem_end = pos_alt + length,
1372		61728	level_end = level->start + level->length;
1373
1374	2/2 ✓ Branch 0 taken 52288 times. ✓ Branch 1 taken 9440 times.	61728	if (elem_end < level_end) {
1375		52288	level_check = 0;
1376	1/2 ✓ Branch 0 taken 9440 times. ✗ Branch 1 not taken.	9440	} else if (elem_end == level_end) {
1377		9440	level_check = LEVEL_ENDED;
1378			} else {
1379		✗	av_log(matroska->ctx, AV_LOG_ERROR,
1380			"Element at 0x%"PRIx64" ending at 0x%"PRIx64" exceeds "
1381			"containing master element ending at 0x%"PRIx64"\n",
1382			pos, elem_end, level_end);
1383		✗	return AVERROR_INVALIDDATA;
1384			}
1385	2/2 ✓ Branch 0 taken 138 times. ✓ Branch 1 taken 6 times.	144	} else if (length != EBML_UNKNOWN_LENGTH) {
1386		138	level_check = 0;
1387	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 6 times.	6	} else if (level->length != EBML_UNKNOWN_LENGTH) {
1388		✗	av_log(matroska->ctx, AV_LOG_ERROR, "Unknown-sized element "
1389			"at 0x%"PRIx64" inside parent with finite size\n", pos);
1390		✗	return AVERROR_INVALIDDATA;
1391			} else {
1392		6	level_check = 0;
1393	3/4 ✓ Branch 0 taken 2 times. ✓ Branch 1 taken 4 times. ✓ Branch 2 taken 2 times. ✗ Branch 3 not taken.	6	if (id != MATROSKA_ID_CLUSTER && (syntax->type == EBML_LEVEL1
1394	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 2 times.	2	|| syntax->type == EBML_NEST)) {
1395			// According to the current specifications only clusters and
1396			// segments are allowed to be unknown-length. We also accept
1397			// other unknown-length master elements.
1398		✗	av_log(matroska->ctx, AV_LOG_WARNING,
1399			"Found unknown-length element 0x%"PRIX32" other than "
1400			"a cluster at 0x%"PRIx64". Spec-incompliant, but "
1401			"parsing will nevertheless be attempted.\n", id, pos);
1402		✗	update_pos = -1;
1403			}
1404			}
1405			} else
1406		842	level_check = 0;
1407
1408	4/4 ✓ Branch 0 taken 52640 times. ✓ Branch 1 taken 10074 times. ✓ Branch 2 taken 2 times. ✓ Branch 3 taken 52638 times.	62714	if (max_lengths[syntax->type] && length > max_lengths[syntax->type]) {
1409	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 2 times.	2	if (length != EBML_UNKNOWN_LENGTH) {
1410		✗	av_log(matroska->ctx, AV_LOG_ERROR,
1411			"Invalid length 0x%"PRIx64" > 0x%"PRIx64" for element "
1412			"with ID 0x%"PRIX32" at 0x%"PRIx64"\n",
1413		✗	length, max_lengths[syntax->type], id, pos);
1414	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 2 times.	2	} else if (syntax->type != EBML_NONE) {
1415		✗	av_log(matroska->ctx, AV_LOG_ERROR,
1416			"Element with ID 0x%"PRIX32" at pos. 0x%"PRIx64" has "
1417			"unknown length, yet the length of an element of its "
1418			"type must be known.\n", id, pos);
1419			} else {
1420		2	av_log(matroska->ctx, AV_LOG_ERROR,
1421			"Found unknown-length element with ID 0x%"PRIX32" at "
1422			"pos. 0x%"PRIx64" for which no syntax for parsing is "
1423			"available.\n", id, pos);
1424			}
1425		2	return AVERROR_INVALIDDATA;
1426			}
1427
1428	2/2 ✓ Branch 0 taken 119 times. ✓ Branch 1 taken 62593 times.	62712	if (!(pb->seekable & AVIO_SEEKABLE_NORMAL)) {
1429			// Losing sync will likely manifest itself as encountering unknown
1430			// elements which are not reliably distinguishable from elements
1431			// belonging to future extensions of the format.
1432			// We use a heuristic to detect such situations: If the current
1433			// element is not expected at the current syntax level and there
1434			// were only a few unknown elements in a row, then the element is
1435			// skipped or considered defective based upon the length of the
1436			// current element (i.e. how much would be skipped); if there were
1437			// more than a few skipped elements in a row and skipping the current
1438			// element would lead us more than SKIP_THRESHOLD away from the last
1439			// known good position, then it is inferred that an error occurred.
1440			// The dependency on the number of unknown elements in a row exists
1441			// because the distance to the last known good position is
1442			// automatically big if the last parsed element was big.
1443			// In both cases, each unknown element is considered equivalent to
1444			// UNKNOWN_EQUIV of skipped bytes for the check.
1445			// The whole check is only done for non-seekable output, because
1446			// in this situation skipped data can't simply be rechecked later.
1447			// This is especially important when using unknown length elements
1448			// as the check for whether a child exceeds its containing master
1449			// element is not effective in this situation.
1450	2/2 ✓ Branch 0 taken 117 times. ✓ Branch 1 taken 2 times.	119	if (update_pos) {
1451		117	matroska->unknown_count = 0;
1452			} else {
1453		2	int64_t dist = length + UNKNOWN_EQUIV * matroska->unknown_count++;
1454
1455	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 2 times.	2	if (matroska->unknown_count > 3)
1456		✗	dist += pos_alt - matroska->resync_pos;
1457
1458	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 2 times.	2	if (dist > SKIP_THRESHOLD) {
1459		✗	av_log(matroska->ctx, AV_LOG_ERROR,
1460			"Unknown element %"PRIX32" at pos. 0x%"PRIx64" with "
1461			"length 0x%"PRIx64" considered as invalid data. Last "
1462			"known good position 0x%"PRIx64", %d unknown elements"
1463			" in a row\n", id, pos, length, matroska->resync_pos,
1464			matroska->unknown_count);
1465		✗	return AVERROR_INVALIDDATA;
1466			}
1467			}
1468			}
1469
1470	2/2 ✓ Branch 0 taken 62547 times. ✓ Branch 1 taken 165 times.	62712	if (update_pos > 0) {
1471			// We have found an element that is allowed at this place
1472			// in the hierarchy and it passed all checks, so treat the beginning
1473			// of the element as the "last known good" position.
1474		62547	matroska->resync_pos = pos;
1475			}
1476
1477	3/4 ✓ Branch 0 taken 409 times. ✓ Branch 1 taken 62303 times. ✓ Branch 2 taken 409 times. ✗ Branch 3 not taken.	62712	if (!data && length != EBML_UNKNOWN_LENGTH)
1478		409	goto skip;
1479			}
1480
1481	8/8 ✓ Branch 0 taken 12835 times. ✓ Branch 1 taken 276 times. ✓ Branch 2 taken 936 times. ✓ Branch 3 taken 3176 times. ✓ Branch 4 taken 32015 times. ✓ Branch 5 taken 9682 times. ✓ Branch 6 taken 2151 times. ✓ Branch 7 taken 3383 times.	64454	switch (syntax->type) {
1482		12835	case EBML_UINT:
1483		12835	res = ebml_read_uint(pb, length, syntax->def.u, data);
1484		12835	break;
1485		276	case EBML_SINT:
1486		276	res = ebml_read_sint(pb, length, syntax->def.i, data);
1487		276	break;
1488		936	case EBML_FLOAT:
1489		936	res = ebml_read_float(pb, length, syntax->def.f, data);
1490		936	break;
1491		3176	case EBML_STR:
1492			case EBML_UTF8:
1493		3176	res = ebml_read_ascii(pb, length, syntax->def.s, data);
1494		3176	break;
1495		32015	case EBML_BIN:
1496		32015	res = ebml_read_binary(pb, length, pos_alt, data);
1497		32015	break;
1498		9682	case EBML_LEVEL1:
1499			case EBML_NEST:
1500	1/2 ✗ Branch 1 not taken. ✓ Branch 2 taken 9682 times.	9682	if ((res = ebml_read_master(matroska, length, pos_alt)) < 0)
1501		✗	return res;
1502	2/2 ✓ Branch 0 taken 421 times. ✓ Branch 1 taken 9261 times.	9682	if (id == MATROSKA_ID_SEGMENT)
1503		421	matroska->segment_start = pos_alt;
1504	2/2 ✓ Branch 0 taken 24 times. ✓ Branch 1 taken 9658 times.	9682	if (id == MATROSKA_ID_CUES)
1505		24	matroska->cues_parsing_deferred = 0;
1506	3/4 ✓ Branch 0 taken 1466 times. ✓ Branch 1 taken 8216 times. ✓ Branch 2 taken 1466 times. ✗ Branch 3 not taken.	11148	if (syntax->type == EBML_LEVEL1 &&
1507		1466	(level1_elem = matroska_find_level1_elem(matroska, syntax->id, pos))) {
1508	2/2 ✓ Branch 0 taken 1416 times. ✓ Branch 1 taken 50 times.	1466	if (!level1_elem->pos) {
1509			// Zero is not a valid position for a level 1 element.
1510		1416	level1_elem->pos = pos;
1511	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 50 times.	50	} else if (level1_elem->pos != pos)
1512		✗	av_log(matroska->ctx, AV_LOG_ERROR, "Duplicate element\n");
1513		1466	level1_elem->parsed = 1;
1514			}
1515	2/2 ✓ Branch 1 taken 1288 times. ✓ Branch 2 taken 8394 times.	9682	if (res = ebml_parse_nest(matroska, syntax->def.n, data))
1516		1288	return res;
1517		8394	break;
1518		2151	case EBML_STOP:
1519		2151	return 1;
1520		409	skip:
1521		3792	default:
1522	2/2 ✓ Branch 0 taken 3790 times. ✓ Branch 1 taken 2 times.	3792	if (length) {
1523			int64_t res2;
1524	1/2 ✗ Branch 1 not taken. ✓ Branch 2 taken 3790 times.	3790	if (ffio_limit(pb, length) != length) {
1525			// ffio_limit emits its own error message,
1526			// so we don't have to.
1527		✗	return AVERROR(EIO);
1528			}
1529	1/2 ✓ Branch 1 taken 3790 times. ✗ Branch 2 not taken.	3790	if ((res2 = avio_skip(pb, length - 1)) >= 0) {
1530			// avio_skip might take us past EOF. We check for this
1531			// by skipping only length - 1 bytes, reading a byte and
1532			// checking the error flags. This is done in order to check
1533			// that the element has been properly skipped even when
1534			// no filesize (that ffio_limit relies on) is available.
1535		3790	avio_r8(pb);
1536		3790	res = NEEDS_CHECKING;
1537			} else
1538		✗	res = res2;
1539			} else
1540		2	res = 0;
1541			}
1542	2/2 ✓ Branch 0 taken 17847 times. ✓ Branch 1 taken 43577 times.	61424	if (res) {
1543	1/2 ✓ Branch 0 taken 17847 times. ✗ Branch 1 not taken.	17847	if (res == NEEDS_CHECKING) {
1544	2/2 ✓ Branch 0 taken 10 times. ✓ Branch 1 taken 17837 times.	17847	if (pb->eof_reached) {
1545	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 10 times.	10	if (pb->error)
1546		✗	res = pb->error;
1547			else
1548		10	res = AVERROR_EOF;
1549			} else
1550		17837	goto level_check;
1551			}
1552
1553	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 10 times.	10	if (res == AVERROR_INVALIDDATA)
1554		✗	av_log(matroska->ctx, AV_LOG_ERROR, "Invalid element\n");
1555	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 10 times.	10	else if (res == AVERROR(EIO))
1556		✗	av_log(matroska->ctx, AV_LOG_ERROR, "Read error\n");
1557	1/2 ✓ Branch 0 taken 10 times. ✗ Branch 1 not taken.	10	else if (res == AVERROR_EOF) {
1558		10	av_log(matroska->ctx, AV_LOG_ERROR, "File ended prematurely\n");
1559		10	res = AVERROR(EIO);
1560			}
1561
1562		10	return res;
1563			}
1564
1565		43577	level_check:
1566	3/4 ✓ Branch 0 taken 241 times. ✓ Branch 1 taken 61173 times. ✓ Branch 2 taken 241 times. ✗ Branch 3 not taken.	61414	if (syntax->is_counted && data) {
1567		241	CountedElement *elem = data;
1568	1/2 ✓ Branch 0 taken 241 times. ✗ Branch 1 not taken.	241	if (elem->count != UINT_MAX)
1569		241	elem->count++;
1570			}
1571
1572	4/4 ✓ Branch 0 taken 9362 times. ✓ Branch 1 taken 52052 times. ✓ Branch 2 taken 9332 times. ✓ Branch 3 taken 30 times.	61414	if (level_check == LEVEL_ENDED && matroska->num_levels) {
1573		9332	level = &matroska->levels[matroska->num_levels - 1];
1574		9332	pos = avio_tell(pb);
1575
1576			// Given that pos >= level->start no check for
1577			// level->length != EBML_UNKNOWN_LENGTH is necessary.
1578	4/4 ✓ Branch 0 taken 17928 times. ✓ Branch 1 taken 815 times. ✓ Branch 2 taken 9411 times. ✓ Branch 3 taken 8517 times.	18743	while (matroska->num_levels && pos == level->start + level->length) {
1579		9411	matroska->num_levels--;
1580		9411	level--;
1581			}
1582			}
1583
1584		61414	return level_check;
1585			}
1586
1587		75883	static void ebml_free(EbmlSyntax *syntax, void *data)
1588			{
1589			int i, j;
1590	2/2 ✓ Branch 0 taken 315676 times. ✓ Branch 1 taken 75883 times.	391559	for (i = 0; syntax[i].id; i++) {
1591		315676	void *data_off = (char *) data + syntax[i].data_offset;
1592	4/4 ✓ Branch 0 taken 5155 times. ✓ Branch 1 taken 33723 times. ✓ Branch 2 taken 76429 times. ✓ Branch 3 taken 200369 times.	315676	switch (syntax[i].type) {
1593		5155	case EBML_STR:
1594			case EBML_UTF8:
1595		5155	av_freep(data_off);
1596		5155	break;
1597		33723	case EBML_BIN:
1598		33723	av_buffer_unref(&((EbmlBin *) data_off)->buf);
1599		33723	break;
1600		76429	case EBML_LEVEL1:
1601			case EBML_NEST:
1602	2/2 ✓ Branch 0 taken 37678 times. ✓ Branch 1 taken 38751 times.	76429	if (syntax[i].list_elem_size) {
1603		37678	EbmlList *list = data_off;
1604		37678	char *ptr = list->elem;
1605	2/2 ✓ Branch 0 taken 4788 times. ✓ Branch 1 taken 37678 times.	42466	for (j = 0; j < list->nb_elem;
1606		4788	j++, ptr += syntax[i].list_elem_size)
1607		4788	ebml_free(syntax[i].def.n, ptr);
1608		37678	av_freep(&list->elem);
1609		37678	list->nb_elem = 0;
1610		37678	list->alloc_elem_size = 0;
1611			} else
1612		38751	ebml_free(syntax[i].def.n, data_off);
1613		76429	break;
1614		200369	default:
1615		200369	break;
1616			}
1617			}
1618		75883	}
1619
1620			/*
1621			* Autodetecting...
1622			*/
1623		8356	static int matroska_probe(const AVProbeData *p)
1624			{
1625		8356	uint64_t total = 0;
1626		8356	int len_mask = 0x80, size = 1, n = 1, i;
1627
1628			/* EBML header? */
1629	2/2 ✓ Branch 0 taken 7972 times. ✓ Branch 1 taken 384 times.	8356	if (AV_RB32(p->buf) != EBML_ID_HEADER)
1630		7972	return 0;
1631
1632			/* length of header */
1633		384	total = p->buf[4];
1634	3/4 ✓ Branch 0 taken 2169 times. ✗ Branch 1 not taken. ✓ Branch 2 taken 1785 times. ✓ Branch 3 taken 384 times.	2169	while (size <= 8 && !(total & len_mask)) {
1635		1785	size++;
1636		1785	len_mask >>= 1;
1637			}
1638	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 384 times.	384	if (size > 8)
1639		✗	return 0;
1640		384	total &= (len_mask - 1);
1641	2/2 ✓ Branch 0 taken 1785 times. ✓ Branch 1 taken 384 times.	2169	while (n < size)
1642		1785	total = (total << 8) | p->buf[4 + n++];
1643
1644	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 384 times.	384	if (total + 1 == 1ULL << (7 * size)){
1645			/* Unknown-length header - simply parse the whole buffer. */
1646		✗	total = p->buf_size - 4 - size;
1647			} else {
1648			/* Does the probe data contain the whole header? */
1649	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 384 times.	384	if (p->buf_size < 4 + size + total)
1650		✗	return 0;
1651			}
1652
1653			/* The header should contain a known document type. For now,
1654			* we don't parse the whole header but simply check for the
1655			* availability of that array of characters inside the header.
1656			* Not fully fool-proof, but good enough. */
1657	1/2 ✓ Branch 0 taken 637 times. ✗ Branch 1 not taken.	637	for (i = 0; i < FF_ARRAY_ELEMS(matroska_doctypes); i++) {
1658		637	size_t probelen = strlen(matroska_doctypes[i]);
1659	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 637 times.	637	if (total < probelen)
1660		✗	continue;
1661	2/2 ✓ Branch 0 taken 13670 times. ✓ Branch 1 taken 253 times.	13923	for (n = 4 + size; n <= 4 + size + total - probelen; n++)
1662	2/2 ✓ Branch 0 taken 384 times. ✓ Branch 1 taken 13286 times.	13670	if (!memcmp(p->buf + n, matroska_doctypes[i], probelen))
1663		384	return AVPROBE_SCORE_MAX;
1664			}
1665
1666			// probably valid EBML header but no recognized doctype
1667		✗	return AVPROBE_SCORE_EXTENSION;
1668			}
1669
1670		32291	static MatroskaTrack *matroska_find_track_by_num(MatroskaDemuxContext *matroska,
1671			uint64_t num)
1672			{
1673		32291	MatroskaTrack *tracks = matroska->tracks.elem;
1674			int i;
1675
1676	2/2 ✓ Branch 0 taken 35411 times. ✓ Branch 1 taken 1 times.	35412	for (i = 0; i < matroska->tracks.nb_elem; i++)
1677	2/2 ✓ Branch 0 taken 32290 times. ✓ Branch 1 taken 3121 times.	35411	if (tracks[i].num == num)
1678		32290	return &tracks[i];
1679
1680		1	av_log(matroska->ctx, AV_LOG_ERROR, "Invalid track number %"PRIu64"\n", num);
1681		1	return NULL;
1682			}
1683
1684		82	static int matroska_decode_buffer(uint8_t **buf, int *buf_size,
1685			MatroskaTrack *track)
1686			{
1687		82	MatroskaTrackEncoding *encodings = track->encodings.elem;
1688		82	uint8_t *data = *buf;
1689		82	int isize = *buf_size;
1690		82	uint8_t *pkt_data = NULL;
1691			av_unused uint8_t *newpktdata;
1692		82	int pkt_size = isize;
1693		82	int result = 0;
1694			int olen;
1695
1696	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 82 times.	82	if (pkt_size >= 10000000U)
1697		✗	return AVERROR_INVALIDDATA;
1698
1699	4/5 ✓ Branch 0 taken 70 times. ✓ Branch 1 taken 4 times. ✓ Branch 2 taken 6 times. ✓ Branch 3 taken 2 times. ✗ Branch 4 not taken.	82	switch (encodings[0].compression.algo) {
1700		70	case MATROSKA_TRACK_ENCODING_COMP_HEADERSTRIP:
1701			{
1702		70	int header_size = encodings[0].compression.settings.size;
1703		70	uint8_t *header = encodings[0].compression.settings.data;
1704
1705	2/4 ✓ Branch 0 taken 70 times. ✗ Branch 1 not taken. ✗ Branch 2 not taken. ✓ Branch 3 taken 70 times.	70	if (header_size && !header) {
1706		✗	av_log(NULL, AV_LOG_ERROR, "Compression size but no data in headerstrip\n");
1707		✗	return -1;
1708			}
1709
1710	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 70 times.	70	if (!header_size)
1711		✗	return 0;
1712
1713		70	pkt_size = isize + header_size;
1714		70	pkt_data = av_malloc(pkt_size + AV_INPUT_BUFFER_PADDING_SIZE);
1715	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 70 times.	70	if (!pkt_data)
1716		✗	return AVERROR(ENOMEM);
1717
1718		70	memcpy(pkt_data, header, header_size);
1719		70	memcpy(pkt_data + header_size, data, isize);
1720		70	break;
1721			}
1722		15	case MATROSKA_TRACK_ENCODING_COMP_LZO:
1723			do {
1724		15	int insize = isize;
1725		15	olen = pkt_size *= 3;
1726		15	newpktdata = av_realloc(pkt_data, pkt_size + AV_LZO_OUTPUT_PADDING
1727		15	+ AV_INPUT_BUFFER_PADDING_SIZE);
1728	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 15 times.	15	if (!newpktdata) {
1729		✗	result = AVERROR(ENOMEM);
1730		✗	goto failed;
1731			}
1732		15	pkt_data = newpktdata;
1733		15	result = av_lzo1x_decode(pkt_data, &olen, data, &insize);
1734	3/4 ✓ Branch 0 taken 11 times. ✓ Branch 1 taken 4 times. ✓ Branch 2 taken 11 times. ✗ Branch 3 not taken.	15	} while (result == AV_LZO_OUTPUT_FULL && pkt_size < 10000000);
1735	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 4 times.	4	if (result) {
1736		✗	result = AVERROR_INVALIDDATA;
1737		✗	goto failed;
1738			}
1739		4	pkt_size -= olen;
1740		4	break;
1741			#if CONFIG_ZLIB
1742		6	case MATROSKA_TRACK_ENCODING_COMP_ZLIB:
1743			{
1744		6	z_stream zstream = { 0 };
1745	2/4 ✓ Branch 0 taken 6 times. ✗ Branch 1 not taken. ✗ Branch 3 not taken. ✓ Branch 4 taken 6 times.	6	if (!pkt_size || inflateInit(&zstream) != Z_OK)
1746		✗	return -1;
1747		6	zstream.next_in = data;
1748		6	zstream.avail_in = isize;
1749			do {
1750		8	pkt_size *= 3;
1751		8	newpktdata = av_realloc(pkt_data, pkt_size + AV_INPUT_BUFFER_PADDING_SIZE);
1752	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 8 times.	8	if (!newpktdata) {
1753		✗	inflateEnd(&zstream);
1754		✗	result = AVERROR(ENOMEM);
1755		✗	goto failed;
1756			}
1757		8	pkt_data = newpktdata;
1758		8	zstream.avail_out = pkt_size - zstream.total_out;
1759		8	zstream.next_out = pkt_data + zstream.total_out;
1760		8	result = inflate(&zstream, Z_NO_FLUSH);
1761	3/4 ✓ Branch 0 taken 2 times. ✓ Branch 1 taken 6 times. ✓ Branch 2 taken 2 times. ✗ Branch 3 not taken.	8	} while (result == Z_OK && pkt_size < 10000000);
1762		6	pkt_size = zstream.total_out;
1763		6	inflateEnd(&zstream);
1764	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 6 times.	6	if (result != Z_STREAM_END) {
1765		✗	if (result == Z_MEM_ERROR)
1766		✗	result = AVERROR(ENOMEM);
1767			else
1768		✗	result = AVERROR_INVALIDDATA;
1769		✗	goto failed;
1770			}
1771		6	break;
1772			}
1773			#endif
1774			#if CONFIG_BZLIB
1775		2	case MATROSKA_TRACK_ENCODING_COMP_BZLIB:
1776			{
1777		2	bz_stream bzstream = { 0 };
1778	2/4 ✓ Branch 0 taken 2 times. ✗ Branch 1 not taken. ✗ Branch 3 not taken. ✓ Branch 4 taken 2 times.	2	if (!pkt_size || BZ2_bzDecompressInit(&bzstream, 0, 0) != BZ_OK)
1779		✗	return -1;
1780		2	bzstream.next_in = data;
1781		2	bzstream.avail_in = isize;
1782			do {
1783		6	pkt_size *= 3;
1784		6	newpktdata = av_realloc(pkt_data, pkt_size + AV_INPUT_BUFFER_PADDING_SIZE);
1785	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 6 times.	6	if (!newpktdata) {
1786		✗	BZ2_bzDecompressEnd(&bzstream);
1787		✗	result = AVERROR(ENOMEM);
1788		✗	goto failed;
1789			}
1790		6	pkt_data = newpktdata;
1791		6	bzstream.avail_out = pkt_size - bzstream.total_out_lo32;
1792		6	bzstream.next_out = pkt_data + bzstream.total_out_lo32;
1793		6	result = BZ2_bzDecompress(&bzstream);
1794	3/4 ✓ Branch 0 taken 4 times. ✓ Branch 1 taken 2 times. ✓ Branch 2 taken 4 times. ✗ Branch 3 not taken.	6	} while (result == BZ_OK && pkt_size < 10000000);
1795		2	pkt_size = bzstream.total_out_lo32;
1796		2	BZ2_bzDecompressEnd(&bzstream);
1797	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 2 times.	2	if (result != BZ_STREAM_END) {
1798		✗	if (result == BZ_MEM_ERROR)
1799		✗	result = AVERROR(ENOMEM);
1800			else
1801		✗	result = AVERROR_INVALIDDATA;
1802		✗	goto failed;
1803			}
1804		2	break;
1805			}
1806			#endif
1807		✗	default:
1808		✗	return AVERROR_INVALIDDATA;
1809			}
1810
1811		82	memset(pkt_data + pkt_size, 0, AV_INPUT_BUFFER_PADDING_SIZE);
1812
1813		82	*buf = pkt_data;
1814		82	*buf_size = pkt_size;
1815		82	return 0;
1816
1817		✗	failed:
1818		✗	av_free(pkt_data);
1819		✗	return result;
1820			}
1821
1822		297	static void matroska_convert_tag(AVFormatContext *s, EbmlList *list,
1823			AVDictionary **metadata, char *prefix)
1824			{
1825		297	MatroskaTag *tags = list->elem;
1826			char key[1024];
1827			int i;
1828
1829	2/2 ✓ Branch 0 taken 661 times. ✓ Branch 1 taken 297 times.	958	for (i = 0; i < list->nb_elem; i++) {
1830		1983	const char *lang = tags[i].lang &&
1831	3/4 ✓ Branch 0 taken 661 times. ✗ Branch 1 not taken. ✓ Branch 2 taken 115 times. ✓ Branch 3 taken 546 times.	661	strcmp(tags[i].lang, "und") ? tags[i].lang : NULL;
1832
1833	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 661 times.	661	if (!tags[i].name) {
1834		✗	av_log(s, AV_LOG_WARNING, "Skipping invalid tag with no TagName.\n");
1835		✗	continue;
1836			}
1837	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 661 times.	661	if (prefix)
1838		✗	snprintf(key, sizeof(key), "%s/%s", prefix, tags[i].name);
1839			else
1840		661	av_strlcpy(key, tags[i].name, sizeof(key));
1841	3/4 ✓ Branch 0 taken 661 times. ✗ Branch 1 not taken. ✓ Branch 2 taken 546 times. ✓ Branch 3 taken 115 times.	661	if (tags[i].def || !lang) {
1842		546	av_dict_set(metadata, key, tags[i].string, 0);
1843	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 546 times.	546	if (tags[i].sub.nb_elem)
1844		✗	matroska_convert_tag(s, &tags[i].sub, metadata, key);
1845			}
1846	2/2 ✓ Branch 0 taken 115 times. ✓ Branch 1 taken 546 times.	661	if (lang) {
1847		115	av_strlcat(key, "-", sizeof(key));
1848		115	av_strlcat(key, lang, sizeof(key));
1849		115	av_dict_set(metadata, key, tags[i].string, 0);
1850	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 115 times.	115	if (tags[i].sub.nb_elem)
1851		✗	matroska_convert_tag(s, &tags[i].sub, metadata, key);
1852			}
1853			}
1854		297	ff_metadata_conv(metadata, NULL, ff_mkv_metadata_conv);
1855		297	}
1856
1857		421	static void matroska_convert_tags(AVFormatContext *s)
1858			{
1859		421	MatroskaDemuxContext *matroska = s->priv_data;
1860		421	MatroskaTags *tags = matroska->tags.elem;
1861			int i, j;
1862
1863	2/2 ✓ Branch 0 taken 297 times. ✓ Branch 1 taken 421 times.	718	for (i = 0; i < matroska->tags.nb_elem; i++) {
1864	2/2 ✓ Branch 0 taken 13 times. ✓ Branch 1 taken 284 times.	297	if (tags[i].target.attachuid) {
1865		13	MatroskaAttachment *attachment = matroska->attachments.elem;
1866		13	int found = 0;
1867	2/2 ✓ Branch 0 taken 13 times. ✓ Branch 1 taken 13 times.	26	for (j = 0; j < matroska->attachments.nb_elem; j++) {
1868	1/2 ✓ Branch 0 taken 13 times. ✗ Branch 1 not taken.	13	if (attachment[j].uid == tags[i].target.attachuid &&
1869	1/2 ✓ Branch 0 taken 13 times. ✗ Branch 1 not taken.	13	attachment[j].stream) {
1870		13	matroska_convert_tag(s, &tags[i].tag,
1871		13	&attachment[j].stream->metadata, NULL);
1872		13	found = 1;
1873			}
1874			}
1875	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 13 times.	13	if (!found) {
1876		✗	av_log(s, AV_LOG_WARNING,
1877			"The tags at index %d refer to a "
1878			"non-existent attachment %"PRId64".\n",
1879		✗	i, tags[i].target.attachuid);
1880			}
1881	2/2 ✓ Branch 0 taken 13 times. ✓ Branch 1 taken 271 times.	284	} else if (tags[i].target.chapteruid) {
1882		13	MatroskaChapter *chapter = matroska->chapters.elem;
1883		13	int found = 0;
1884	2/2 ✓ Branch 0 taken 26 times. ✓ Branch 1 taken 13 times.	39	for (j = 0; j < matroska->chapters.nb_elem; j++) {
1885	2/2 ✓ Branch 0 taken 13 times. ✓ Branch 1 taken 13 times.	26	if (chapter[j].uid == tags[i].target.chapteruid &&
1886	1/2 ✓ Branch 0 taken 13 times. ✗ Branch 1 not taken.	13	chapter[j].chapter) {
1887		13	matroska_convert_tag(s, &tags[i].tag,
1888		13	&chapter[j].chapter->metadata, NULL);
1889		13	found = 1;
1890			}
1891			}
1892	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 13 times.	13	if (!found) {
1893		✗	av_log(s, AV_LOG_WARNING,
1894			"The tags at index %d refer to a non-existent chapter "
1895			"%"PRId64".\n",
1896		✗	i, tags[i].target.chapteruid);
1897			}
1898	2/2 ✓ Branch 0 taken 195 times. ✓ Branch 1 taken 76 times.	271	} else if (tags[i].target.trackuid) {
1899		195	MatroskaTrack *track = matroska->tracks.elem;
1900		195	int found = 0;
1901	2/2 ✓ Branch 0 taken 445 times. ✓ Branch 1 taken 195 times.	640	for (j = 0; j < matroska->tracks.nb_elem; j++) {
1902	2/2 ✓ Branch 0 taken 195 times. ✓ Branch 1 taken 250 times.	445	if (track[j].uid == tags[i].target.trackuid &&
1903	1/2 ✓ Branch 0 taken 195 times. ✗ Branch 1 not taken.	195	track[j].stream) {
1904		195	matroska_convert_tag(s, &tags[i].tag,
1905		195	&track[j].stream->metadata, NULL);
1906		195	found = 1;
1907			}
1908			}
1909	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 195 times.	195	if (!found) {
1910		✗	av_log(s, AV_LOG_WARNING,
1911			"The tags at index %d refer to a non-existent track "
1912			"%"PRId64".\n",
1913		✗	i, tags[i].target.trackuid);
1914			}
1915			} else {
1916		76	matroska_convert_tag(s, &tags[i].tag, &s->metadata,
1917		76	tags[i].target.type);
1918			}
1919			}
1920		421	}
1921
1922		52	static int matroska_parse_seekhead_entry(MatroskaDemuxContext *matroska,
1923			int64_t pos)
1924			{
1925		52	uint32_t saved_id = matroska->current_id;
1926		52	int64_t before_pos = avio_tell(matroska->ctx->pb);
1927		52	int ret = 0;
1928			int ret2;
1929
1930			/* seek */
1931	1/2 ✓ Branch 1 taken 52 times. ✗ Branch 2 not taken.	52	if (avio_seek(matroska->ctx->pb, pos, SEEK_SET) == pos) {
1932			/* We don't want to lose our seekhead level, so we add
1933			* a dummy. This is a crude hack. */
1934	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 52 times.	52	if (matroska->num_levels == EBML_MAX_DEPTH) {
1935		✗	av_log(matroska->ctx, AV_LOG_INFO,
1936			"Max EBML element depth (%d) reached, "
1937			"cannot parse further.\n", EBML_MAX_DEPTH);
1938		✗	ret = AVERROR_INVALIDDATA;
1939			} else {
1940		52	matroska->levels[matroska->num_levels] = (MatroskaLevel) { 0, EBML_UNKNOWN_LENGTH };
1941		52	matroska->num_levels++;
1942		52	matroska->current_id = 0;
1943
1944		52	ret = ebml_parse(matroska, matroska_segment, matroska);
1945	2/2 ✓ Branch 0 taken 2 times. ✓ Branch 1 taken 50 times.	52	if (ret == LEVEL_ENDED) {
1946			/* This can only happen if the seek brought us beyond EOF. */
1947		2	ret = AVERROR_EOF;
1948			}
1949			}
1950			}
1951			/* Seek back - notice that in all instances where this is used
1952			* it is safe to set the level to 1. */
1953		52	ret2 = matroska_reset_status(matroska, saved_id, before_pos);
1954	2/2 ✓ Branch 0 taken 50 times. ✓ Branch 1 taken 2 times.	52	if (ret >= 0)
1955		50	ret = ret2;
1956
1957		52	return ret;
1958			}
1959
1960		421	static void matroska_execute_seekhead(MatroskaDemuxContext *matroska)
1961			{
1962		421	EbmlList *seekhead_list = &matroska->seekhead;
1963			int i;
1964
1965			// we should not do any seeking in the streaming case
1966	2/2 ✓ Branch 0 taken 1 times. ✓ Branch 1 taken 420 times.	421	if (!(matroska->ctx->pb->seekable & AVIO_SEEKABLE_NORMAL))
1967		1	return;
1968
1969	2/2 ✓ Branch 0 taken 1412 times. ✓ Branch 1 taken 419 times.	1831	for (i = 0; i < seekhead_list->nb_elem; i++) {
1970		1412	MatroskaSeekhead *seekheads = seekhead_list->elem;
1971		1412	uint32_t id = seekheads[i].id;
1972		1412	int64_t pos = seekheads[i].pos + matroska->segment_start;
1973			MatroskaLevel1Element *elem;
1974
1975	2/4 ✓ Branch 0 taken 1412 times. ✗ Branch 1 not taken. ✗ Branch 2 not taken. ✓ Branch 3 taken 1412 times.	1412	if (id != seekheads[i].id || pos < matroska->segment_start)
1976		✗	continue;
1977
1978		1412	elem = matroska_find_level1_elem(matroska, id, pos);
1979	4/4 ✓ Branch 0 taken 1387 times. ✓ Branch 1 taken 25 times. ✓ Branch 2 taken 979 times. ✓ Branch 3 taken 408 times.	1412	if (!elem || elem->parsed)
1980		1004	continue;
1981
1982		408	elem->pos = pos;
1983
1984			// defer cues parsing until we actually need cue data.
1985	2/2 ✓ Branch 0 taken 368 times. ✓ Branch 1 taken 40 times.	408	if (id == MATROSKA_ID_CUES)
1986		368	continue;
1987
1988	2/2 ✓ Branch 1 taken 1 times. ✓ Branch 2 taken 39 times.	40	if (matroska_parse_seekhead_entry(matroska, pos) < 0) {
1989			// mark index as broken
1990		1	matroska->cues_parsing_deferred = -1;
1991		1	break;
1992			}
1993
1994		39	elem->parsed = 1;
1995			}
1996			}
1997
1998		438	static void matroska_add_index_entries(MatroskaDemuxContext *matroska)
1999			{
2000			EbmlList *index_list;
2001			MatroskaIndex *index;
2002		438	uint64_t index_scale = 1;
2003			int i, j;
2004
2005	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 438 times.	438	if (matroska->ctx->flags & AVFMT_FLAG_IGNIDX)
2006		✗	return;
2007
2008		438	index_list = &matroska->index;
2009		438	index = index_list->elem;
2010	2/2 ✓ Branch 0 taken 416 times. ✓ Branch 1 taken 22 times.	438	if (index_list->nb_elem < 2)
2011		416	return;
2012	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 22 times.	22	if (index[1].time > 1E14 / matroska->time_scale) {
2013		✗	av_log(matroska->ctx, AV_LOG_WARNING, "Dropping apparently-broken index.\n");
2014		✗	return;
2015			}
2016	2/2 ✓ Branch 0 taken 686 times. ✓ Branch 1 taken 22 times.	708	for (i = 0; i < index_list->nb_elem; i++) {
2017		686	EbmlList *pos_list = &index[i].pos;
2018		686	MatroskaIndexPos *pos = pos_list->elem;
2019	2/2 ✓ Branch 0 taken 804 times. ✓ Branch 1 taken 686 times.	1490	for (j = 0; j < pos_list->nb_elem; j++) {
2020		804	MatroskaTrack *track = matroska_find_track_by_num(matroska,
2021		804	pos[j].track);
2022	2/4 ✓ Branch 0 taken 804 times. ✗ Branch 1 not taken. ✓ Branch 2 taken 804 times. ✗ Branch 3 not taken.	804	if (track && track->stream)
2023		804	av_add_index_entry(track->stream,
2024		804	pos[j].pos + matroska->segment_start,
2025		804	index[i].time / index_scale, 0, 0,
2026			AVINDEX_KEYFRAME);
2027			}
2028			}
2029			}
2030
2031		17	static void matroska_parse_cues(MatroskaDemuxContext *matroska) {
2032			int i;
2033
2034	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 17 times.	17	if (matroska->ctx->flags & AVFMT_FLAG_IGNIDX)
2035		✗	return;
2036
2037	2/2 ✓ Branch 0 taken 69 times. ✓ Branch 1 taken 5 times.	74	for (i = 0; i < matroska->num_level1_elems; i++) {
2038		69	MatroskaLevel1Element *elem = &matroska->level1_elems[i];
2039	3/4 ✓ Branch 0 taken 12 times. ✓ Branch 1 taken 57 times. ✓ Branch 2 taken 12 times. ✗ Branch 3 not taken.	69	if (elem->id == MATROSKA_ID_CUES && !elem->parsed) {
2040	2/2 ✓ Branch 1 taken 1 times. ✓ Branch 2 taken 11 times.	12	if (matroska_parse_seekhead_entry(matroska, elem->pos) < 0)
2041		1	matroska->cues_parsing_deferred = -1;
2042		12	elem->parsed = 1;
2043		12	break;
2044			}
2045			}
2046
2047		17	matroska_add_index_entries(matroska);
2048			}
2049
2050		501	static int matroska_parse_content_encodings(MatroskaTrackEncoding *encodings,
2051			unsigned nb_encodings,
2052			MatroskaTrack *track,
2053			char **key_id_base64, void *logctx)
2054			{
2055	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 501 times.	501	if (nb_encodings > 1) {
2056		✗	av_log(logctx, AV_LOG_ERROR,
2057			"Multiple combined encodings not supported\n");
2058		✗	return 0;
2059			}
2060	2/2 ✓ Branch 0 taken 489 times. ✓ Branch 1 taken 12 times.	501	if (!nb_encodings)
2061		489	return 0;
2062	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 12 times.	12	if (encodings->type) {
2063		✗	if (encodings->encryption.key_id.size > 0) {
2064			/* Save the encryption key id to be stored later
2065			* as a metadata tag. */
2066		✗	const int b64_size = AV_BASE64_SIZE(encodings->encryption.key_id.size);
2067		✗	*key_id_base64 = av_malloc(b64_size);
2068		✗	if (!*key_id_base64)
2069		✗	return AVERROR(ENOMEM);
2070
2071		✗	av_base64_encode(*key_id_base64, b64_size,
2072		✗	encodings->encryption.key_id.data,
2073			encodings->encryption.key_id.size);
2074			} else {
2075		✗	encodings->scope = 0;
2076		✗	av_log(logctx, AV_LOG_ERROR, "Unsupported encoding type\n");
2077			}
2078		12	} else if (
2079			#if CONFIG_ZLIB
2080	2/2 ✓ Branch 0 taken 9 times. ✓ Branch 1 taken 3 times.	12	encodings->compression.algo != MATROSKA_TRACK_ENCODING_COMP_ZLIB &&
2081			#endif
2082			#if CONFIG_BZLIB
2083	2/2 ✓ Branch 0 taken 8 times. ✓ Branch 1 taken 1 times.	9	encodings->compression.algo != MATROSKA_TRACK_ENCODING_COMP_BZLIB &&
2084			#endif
2085	2/2 ✓ Branch 0 taken 7 times. ✓ Branch 1 taken 1 times.	8	encodings->compression.algo != MATROSKA_TRACK_ENCODING_COMP_LZO &&
2086	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 7 times.	7	encodings->compression.algo != MATROSKA_TRACK_ENCODING_COMP_HEADERSTRIP) {
2087		✗	encodings->scope = 0;
2088		✗	av_log(logctx, AV_LOG_ERROR, "Unsupported encoding type\n");
2089	4/4 ✓ Branch 0 taken 9 times. ✓ Branch 1 taken 3 times. ✓ Branch 2 taken 1 times. ✓ Branch 3 taken 8 times.	12	} else if (track->codec_priv.size && encodings[0].scope & 2) {
2090		1	uint8_t *codec_priv = track->codec_priv.data;
2091		1	int ret = matroska_decode_buffer(&track->codec_priv.data,
2092			&track->codec_priv.size,
2093			track);
2094	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 1 times.	1	if (ret < 0) {
2095		✗	track->codec_priv.data = NULL;
2096		✗	track->codec_priv.size = 0;
2097		✗	av_log(logctx, AV_LOG_ERROR,
2098			"Failed to decode codec private data\n");
2099			}
2100
2101	1/2 ✓ Branch 0 taken 1 times. ✗ Branch 1 not taken.	1	if (codec_priv != track->codec_priv.data) {
2102		1	av_buffer_unref(&track->codec_priv.buf);
2103	1/2 ✓ Branch 0 taken 1 times. ✗ Branch 1 not taken.	1	if (track->codec_priv.data) {
2104		2	track->codec_priv.buf = av_buffer_create(track->codec_priv.data,
2105		1	track->codec_priv.size + AV_INPUT_BUFFER_PADDING_SIZE,
2106			NULL, NULL, 0);
2107	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 1 times.	1	if (!track->codec_priv.buf) {
2108		✗	av_freep(&track->codec_priv.data);
2109		✗	track->codec_priv.size = 0;
2110		✗	return AVERROR(ENOMEM);
2111			}
2112			}
2113			}
2114			}
2115		36	track->needs_decoding = !encodings->type &&
2116	2/4 ✓ Branch 0 taken 12 times. ✗ Branch 1 not taken. ✓ Branch 2 taken 12 times. ✗ Branch 3 not taken.	24	encodings->scope & 1 &&
2117	2/2 ✓ Branch 0 taken 7 times. ✓ Branch 1 taken 5 times.	12	(encodings->compression.algo !=
2118		7	MATROSKA_TRACK_ENCODING_COMP_HEADERSTRIP ||
2119	1/2 ✓ Branch 0 taken 7 times. ✗ Branch 1 not taken.	7	encodings->compression.settings.size);
2120
2121		12	return 0;
2122			}
2123
2124		✗	static int matroska_aac_profile(char *codec_id)
2125			{
2126			static const char *const aac_profiles[] = { "MAIN", "LC", "SSR" };
2127			int profile;
2128
2129		✗	for (profile = 0; profile < FF_ARRAY_ELEMS(aac_profiles); profile++)
2130		✗	if (strstr(codec_id, aac_profiles[profile]))
2131		✗	break;
2132		✗	return profile + 1;
2133			}
2134
2135		✗	static int matroska_aac_sri(int samplerate)
2136			{
2137			int sri;
2138
2139		✗	for (sri = 0; sri < FF_ARRAY_ELEMS(ff_mpeg4audio_sample_rates); sri++)
2140		✗	if (ff_mpeg4audio_sample_rates[sri] == samplerate)
2141		✗	break;
2142		✗	return sri;
2143			}
2144
2145		40	static void matroska_metadata_creation_time(AVDictionary **metadata, int64_t date_utc)
2146			{
2147			/* Convert to seconds and adjust by number of seconds between 2001-01-01 and Epoch */
2148		40	ff_dict_set_timestamp(metadata, "creation_time", date_utc / 1000 + 978307200000000LL);
2149		40	}
2150
2151		9	static int matroska_parse_flac(AVFormatContext *s,
2152			MatroskaTrack *track,
2153			int *offset)
2154			{
2155		9	AVStream *st = track->stream;
2156		9	uint8_t *p = track->codec_priv.data;
2157		9	int size = track->codec_priv.size;
2158
2159	2/4 ✓ Branch 0 taken 9 times. ✗ Branch 1 not taken. ✗ Branch 2 not taken. ✓ Branch 3 taken 9 times.	9	if (size < 8 + FLAC_STREAMINFO_SIZE || p[4] & 0x7f) {
2160		✗	av_log(s, AV_LOG_WARNING, "Invalid FLAC private data\n");
2161		✗	track->codec_priv.size = 0;
2162		✗	return 0;
2163			}
2164		9	*offset = 8;
2165		9	track->codec_priv.size = 8 + FLAC_STREAMINFO_SIZE;
2166
2167		9	p += track->codec_priv.size;
2168		9	size -= track->codec_priv.size;
2169
2170			/* parse the remaining metadata blocks if present */
2171	2/2 ✓ Branch 0 taken 8 times. ✓ Branch 1 taken 9 times.	17	while (size >= 4) {
2172			int block_last, block_type, block_size;
2173
2174		8	flac_parse_block_header(p, &block_last, &block_type, &block_size);
2175
2176		8	p += 4;
2177		8	size -= 4;
2178	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 8 times.	8	if (block_size > size)
2179		✗	return 0;
2180
2181			/* check for the channel mask */
2182	1/2 ✓ Branch 0 taken 8 times. ✗ Branch 1 not taken.	8	if (block_type == FLAC_METADATA_TYPE_VORBIS_COMMENT) {
2183		8	AVDictionary *dict = NULL;
2184			AVDictionaryEntry *chmask;
2185
2186		8	ff_vorbis_comment(s, &dict, p, block_size, 0);
2187		8	chmask = av_dict_get(dict, "WAVEFORMATEXTENSIBLE_CHANNEL_MASK", NULL, 0);
2188	1/2 ✓ Branch 0 taken 8 times. ✗ Branch 1 not taken.	8	if (chmask) {
2189		8	uint64_t mask = strtol(chmask->value, NULL, 0);
2190	2/4 ✓ Branch 0 taken 8 times. ✗ Branch 1 not taken. ✗ Branch 2 not taken. ✓ Branch 3 taken 8 times.	8	if (!mask || mask & ~0x3ffffULL) {
2191		✗	av_log(s, AV_LOG_WARNING,
2192			"Invalid value of WAVEFORMATEXTENSIBLE_CHANNEL_MASK\n");
2193			} else
2194		8	av_channel_layout_from_mask(&st->codecpar->ch_layout, mask);
2195			}
2196		8	av_dict_free(&dict);
2197			}
2198
2199		8	p += block_size;
2200		8	size -= block_size;
2201			}
2202
2203		9	return 0;
2204			}
2205
2206		7	static int mkv_field_order(const MatroskaDemuxContext *matroska, uint64_t field_order)
2207			{
2208		7	int minor, micro, bttb = 0;
2209
2210			/* workaround a bug in our Matroska muxer, introduced in version 57.36 alongside
2211			* this function, and fixed in 57.52 */
2212	2/4 ✓ Branch 0 taken 7 times. ✗ Branch 1 not taken. ✗ Branch 2 not taken. ✓ Branch 3 taken 7 times.	7	if (matroska->muxingapp && sscanf(matroska->muxingapp, "Lavf57.%d.%d", &minor, &micro) == 2)
2213		✗	bttb = (minor >= 36 && minor <= 51 && micro >= 100);
2214
2215	2/7 ✗ Branch 0 not taken. ✗ Branch 1 not taken. ✓ Branch 2 taken 6 times. ✓ Branch 3 taken 1 times. ✗ Branch 4 not taken. ✗ Branch 5 not taken. ✗ Branch 6 not taken.	7	switch (field_order) {
2216		✗	case MATROSKA_VIDEO_FIELDORDER_PROGRESSIVE:
2217		✗	return AV_FIELD_PROGRESSIVE;
2218		✗	case MATROSKA_VIDEO_FIELDORDER_UNDETERMINED:
2219		✗	return AV_FIELD_UNKNOWN;
2220		6	case MATROSKA_VIDEO_FIELDORDER_TT:
2221		6	return AV_FIELD_TT;
2222		1	case MATROSKA_VIDEO_FIELDORDER_BB:
2223		1	return AV_FIELD_BB;
2224		✗	case MATROSKA_VIDEO_FIELDORDER_BT:
2225		✗	return bttb ? AV_FIELD_TB : AV_FIELD_BT;
2226		✗	case MATROSKA_VIDEO_FIELDORDER_TB:
2227		✗	return bttb ? AV_FIELD_BT : AV_FIELD_TB;
2228		✗	default:
2229		✗	return AV_FIELD_UNKNOWN;
2230			}
2231			}
2232
2233		22	static void mkv_stereo_mode_display_mul(int stereo_mode,
2234			int *h_width, int *h_height)
2235			{
2236	3/4 ✗ Branch 0 not taken. ✓ Branch 1 taken 9 times. ✓ Branch 2 taken 9 times. ✓ Branch 3 taken 4 times.	22	switch (stereo_mode) {
2237		✗	case MATROSKA_VIDEO_STEREOMODE_TYPE_MONO:
2238			case MATROSKA_VIDEO_STEREOMODE_TYPE_CHECKERBOARD_RL:
2239			case MATROSKA_VIDEO_STEREOMODE_TYPE_CHECKERBOARD_LR:
2240			case MATROSKA_VIDEO_STEREOMODE_TYPE_BOTH_EYES_BLOCK_RL:
2241			case MATROSKA_VIDEO_STEREOMODE_TYPE_BOTH_EYES_BLOCK_LR:
2242		✗	break;
2243		9	case MATROSKA_VIDEO_STEREOMODE_TYPE_RIGHT_LEFT:
2244			case MATROSKA_VIDEO_STEREOMODE_TYPE_LEFT_RIGHT:
2245			case MATROSKA_VIDEO_STEREOMODE_TYPE_COL_INTERLEAVED_RL:
2246			case MATROSKA_VIDEO_STEREOMODE_TYPE_COL_INTERLEAVED_LR:
2247		9	*h_width = 2;
2248		9	break;
2249		9	case MATROSKA_VIDEO_STEREOMODE_TYPE_BOTTOM_TOP:
2250			case MATROSKA_VIDEO_STEREOMODE_TYPE_TOP_BOTTOM:
2251			case MATROSKA_VIDEO_STEREOMODE_TYPE_ROW_INTERLEAVED_RL:
2252			case MATROSKA_VIDEO_STEREOMODE_TYPE_ROW_INTERLEAVED_LR:
2253		9	*h_height = 2;
2254		9	break;
2255			}
2256		22	}
2257
2258		247	static int mkv_stereo3d_conv(AVStream *st, MatroskaVideoStereoModeType stereo_mode)
2259			{
2260			static const struct {
2261			char type;
2262			char flags;
2263			} stereo_mode_conv [] = {
2264			#define STEREO_MODE_CONV(STEREOMODETYPE, STEREO3DTYPE, FLAGS, WDIV, HDIV, WEBM) \
2265			[(STEREOMODETYPE)] = { .type = (STEREO3DTYPE), .flags = (FLAGS) },
2266			#define NOTHING(STEREOMODETYPE, WDIV, HDIV, WEBM)
2267			STEREOMODE_STEREO3D_MAPPING(STEREO_MODE_CONV, NOTHING)
2268			};
2269			AVStereo3D *stereo;
2270			size_t size;
2271
2272		247	stereo = av_stereo3d_alloc_size(&size);
2273	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 247 times.	247	if (!stereo)
2274		✗	return AVERROR(ENOMEM);
2275
2276		247	stereo->type = stereo_mode_conv[stereo_mode].type;
2277		247	stereo->flags = stereo_mode_conv[stereo_mode].flags;
2278
2279	1/2 ✗ Branch 1 not taken. ✓ Branch 2 taken 247 times.	247	if (!av_packet_side_data_add(&st->codecpar->coded_side_data, &st->codecpar->nb_coded_side_data,
2280			AV_PKT_DATA_STEREO3D, stereo, size, 0)) {
2281		✗	av_freep(&stereo);
2282		✗	return AVERROR(ENOMEM);
2283			}
2284
2285		247	return 0;
2286			}
2287
2288		381	static int mkv_parse_video_color(AVStream *st, const MatroskaTrack *track) {
2289		381	const MatroskaTrackVideoColor *color = track->video.color.elem;
2290			const MatroskaMasteringMeta *mastering_meta;
2291			int has_mastering_primaries, has_mastering_luminance;
2292
2293	2/2 ✓ Branch 0 taken 282 times. ✓ Branch 1 taken 99 times.	381	if (!track->video.color.nb_elem)
2294		282	return 0;
2295
2296		99	mastering_meta = &color->mastering_meta;
2297			// Mastering primaries are CIE 1931 coords, and must be > 0.
2298		99	has_mastering_primaries =
2299	1/2 ✓ Branch 0 taken 17 times. ✗ Branch 1 not taken.	17	mastering_meta->r_x > 0 && mastering_meta->r_y > 0 &&
2300	2/4 ✓ Branch 0 taken 17 times. ✗ Branch 1 not taken. ✓ Branch 2 taken 17 times. ✗ Branch 3 not taken.	17	mastering_meta->g_x > 0 && mastering_meta->g_y > 0 &&
2301	2/4 ✓ Branch 0 taken 17 times. ✗ Branch 1 not taken. ✓ Branch 2 taken 17 times. ✗ Branch 3 not taken.	17	mastering_meta->b_x > 0 && mastering_meta->b_y > 0 &&
2302	4/6 ✓ Branch 0 taken 17 times. ✓ Branch 1 taken 82 times. ✓ Branch 2 taken 17 times. ✗ Branch 3 not taken. ✓ Branch 4 taken 17 times. ✗ Branch 5 not taken.	116	mastering_meta->white_x > 0 && mastering_meta->white_y > 0;
2303		198	has_mastering_luminance = mastering_meta->max_luminance >
2304		116	mastering_meta->min_luminance.el.f &&
2305	3/4 ✓ Branch 0 taken 17 times. ✓ Branch 1 taken 82 times. ✓ Branch 2 taken 17 times. ✗ Branch 3 not taken.	116	mastering_meta->min_luminance.el.f >= 0 &&
2306	1/2 ✓ Branch 0 taken 17 times. ✗ Branch 1 not taken.	17	mastering_meta->min_luminance.count;
2307
2308	1/2 ✓ Branch 0 taken 99 times. ✗ Branch 1 not taken.	99	if (color->matrix_coefficients != AVCOL_SPC_RESERVED)
2309		99	st->codecpar->color_space = color->matrix_coefficients;
2310	1/2 ✓ Branch 0 taken 99 times. ✗ Branch 1 not taken.	99	if (color->primaries != AVCOL_PRI_RESERVED &&
2311	2/2 ✓ Branch 0 taken 97 times. ✓ Branch 1 taken 2 times.	99	color->primaries != AVCOL_PRI_RESERVED0)
2312		97	st->codecpar->color_primaries = color->primaries;
2313	1/2 ✓ Branch 0 taken 99 times. ✗ Branch 1 not taken.	99	if (color->transfer_characteristics != AVCOL_TRC_RESERVED &&
2314	2/2 ✓ Branch 0 taken 97 times. ✓ Branch 1 taken 2 times.	99	color->transfer_characteristics != AVCOL_TRC_RESERVED0)
2315		97	st->codecpar->color_trc = color->transfer_characteristics;
2316	2/2 ✓ Branch 0 taken 71 times. ✓ Branch 1 taken 28 times.	99	if (color->range != AVCOL_RANGE_UNSPECIFIED &&
2317	1/2 ✓ Branch 0 taken 71 times. ✗ Branch 1 not taken.	71	color->range <= AVCOL_RANGE_JPEG)
2318		71	st->codecpar->color_range = color->range;
2319	2/2 ✓ Branch 0 taken 61 times. ✓ Branch 1 taken 38 times.	99	if (color->chroma_siting_horz != MATROSKA_COLOUR_CHROMASITINGHORZ_UNDETERMINED &&
2320	1/2 ✓ Branch 0 taken 61 times. ✗ Branch 1 not taken.	61	color->chroma_siting_vert != MATROSKA_COLOUR_CHROMASITINGVERT_UNDETERMINED &&
2321	1/2 ✓ Branch 0 taken 61 times. ✗ Branch 1 not taken.	61	color->chroma_siting_horz < MATROSKA_COLOUR_CHROMASITINGHORZ_NB &&
2322	1/2 ✓ Branch 0 taken 61 times. ✗ Branch 1 not taken.	61	color->chroma_siting_vert < MATROSKA_COLOUR_CHROMASITINGVERT_NB) {
2323		61	st->codecpar->chroma_location =
2324		61	av_chroma_location_pos_to_enum((color->chroma_siting_horz - 1) << 7,
2325		61	(color->chroma_siting_vert - 1) << 7);
2326			}
2327	3/4 ✓ Branch 0 taken 17 times. ✓ Branch 1 taken 82 times. ✓ Branch 2 taken 17 times. ✗ Branch 3 not taken.	99	if (color->max_cll && color->max_fall) {
2328		17	size_t size = 0;
2329		17	AVContentLightMetadata *metadata = av_content_light_metadata_alloc(&size);
2330	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 17 times.	17	if (!metadata)
2331		✗	return AVERROR(ENOMEM);
2332	1/2 ✗ Branch 1 not taken. ✓ Branch 2 taken 17 times.	17	if (!av_packet_side_data_add(&st->codecpar->coded_side_data, &st->codecpar->nb_coded_side_data,
2333			AV_PKT_DATA_CONTENT_LIGHT_LEVEL, metadata, size, 0)) {
2334		✗	av_freep(&metadata);
2335		✗	return AVERROR(ENOMEM);
2336			}
2337		17	metadata->MaxCLL = color->max_cll;
2338		17	metadata->MaxFALL = color->max_fall;
2339			}
2340
2341	3/4 ✓ Branch 0 taken 82 times. ✓ Branch 1 taken 17 times. ✗ Branch 2 not taken. ✓ Branch 3 taken 82 times.	99	if (has_mastering_primaries || has_mastering_luminance) {
2342		17	size_t size = 0;
2343		17	AVMasteringDisplayMetadata *metadata = av_mastering_display_metadata_alloc_size(&size);
2344	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 17 times.	17	if (!metadata)
2345		✗	return AVERROR(ENOMEM);
2346	1/2 ✗ Branch 1 not taken. ✓ Branch 2 taken 17 times.	17	if (!av_packet_side_data_add(&st->codecpar->coded_side_data, &st->codecpar->nb_coded_side_data,
2347			AV_PKT_DATA_MASTERING_DISPLAY_METADATA, metadata, size, 0)) {
2348		✗	av_freep(&metadata);
2349		✗	return AVERROR(ENOMEM);
2350			}
2351	1/2 ✓ Branch 0 taken 17 times. ✗ Branch 1 not taken.	17	if (has_mastering_primaries) {
2352		17	metadata->display_primaries[0][0] = av_d2q(mastering_meta->r_x, INT_MAX);
2353		17	metadata->display_primaries[0][1] = av_d2q(mastering_meta->r_y, INT_MAX);
2354		17	metadata->display_primaries[1][0] = av_d2q(mastering_meta->g_x, INT_MAX);
2355		17	metadata->display_primaries[1][1] = av_d2q(mastering_meta->g_y, INT_MAX);
2356		17	metadata->display_primaries[2][0] = av_d2q(mastering_meta->b_x, INT_MAX);
2357		17	metadata->display_primaries[2][1] = av_d2q(mastering_meta->b_y, INT_MAX);
2358		17	metadata->white_point[0] = av_d2q(mastering_meta->white_x, INT_MAX);
2359		17	metadata->white_point[1] = av_d2q(mastering_meta->white_y, INT_MAX);
2360		17	metadata->has_primaries = 1;
2361			}
2362	1/2 ✓ Branch 0 taken 17 times. ✗ Branch 1 not taken.	17	if (has_mastering_luminance) {
2363		17	metadata->max_luminance = av_d2q(mastering_meta->max_luminance, INT_MAX);
2364		17	metadata->min_luminance = av_d2q(mastering_meta->min_luminance.el.f, INT_MAX);
2365		17	metadata->has_luminance = 1;
2366			}
2367			}
2368		99	return 0;
2369			}
2370
2371		375	static int mkv_create_display_matrix(AVStream *st,
2372			const MatroskaTrackVideoProjection *proj,
2373			void *logctx)
2374			{
2375			AVPacketSideData *sd;
2376		375	double pitch = proj->pitch, yaw = proj->yaw, roll = proj->roll;
2377			int32_t *matrix;
2378			int hflip;
2379
2380	5/6 ✓ Branch 0 taken 375 times. ✗ Branch 1 not taken. ✓ Branch 2 taken 358 times. ✓ Branch 3 taken 17 times. ✓ Branch 4 taken 356 times. ✓ Branch 5 taken 2 times.	375	if (pitch == 0.0 && yaw == 0.0 && roll == 0.0)
2381		356	return 0;
2382
2383			/* Note: The following constants are exactly representable
2384			* as floating-point numbers. */
2385	7/10 ✓ Branch 0 taken 19 times. ✗ Branch 1 not taken. ✓ Branch 2 taken 17 times. ✓ Branch 3 taken 2 times. ✓ Branch 4 taken 13 times. ✓ Branch 5 taken 4 times. ✓ Branch 6 taken 13 times. ✗ Branch 7 not taken. ✗ Branch 8 not taken. ✓ Branch 9 taken 19 times.	19	if (pitch != 0.0 || (yaw != 0.0 && yaw != 180.0 && yaw != -180.0) ||
2386			isnan(roll)) {
2387		✗	av_log(logctx, AV_LOG_WARNING, "Ignoring non-2D rectangular "
2388			"projection in stream %u (yaw %f, pitch %f, roll %f)\n",
2389			st->index, yaw, pitch, roll);
2390		✗	return 0;
2391			}
2392		19	sd = av_packet_side_data_new(&st->codecpar->coded_side_data,
2393		19	&st->codecpar->nb_coded_side_data,
2394			AV_PKT_DATA_DISPLAYMATRIX,
2395			9 * sizeof(*matrix), 0);
2396	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 19 times.	19	if (!sd)
2397		✗	return AVERROR(ENOMEM);
2398		19	matrix = (int32_t*)sd->data;
2399
2400		19	hflip = yaw != 0.0;
2401			/* ProjectionPoseRoll is in the counter-clockwise direction
2402			* whereas av_display_rotation_set() expects its argument
2403			* to be oriented clockwise, so we need to negate roll.
2404			* Furthermore, if hflip is set, we need to negate it again
2405			* to account for the fact that the Matroska specifications
2406			* require the yaw rotation to be applied first. */
2407		19	av_display_rotation_set(matrix, roll * (2 * hflip - 1));
2408		19	av_display_matrix_flip(matrix, hflip, 0);
2409
2410		19	return 0;
2411			}
2412
2413		381	static int mkv_parse_video_projection(AVStream *st, const MatroskaTrack *track,
2414			void *logctx)
2415			{
2416			AVSphericalMapping *spherical;
2417		381	const MatroskaTrackVideoProjection *mkv_projection = &track->video.projection;
2418		381	const uint8_t *priv_data = mkv_projection->private.data;
2419			enum AVSphericalProjection projection;
2420			size_t spherical_size;
2421		381	uint32_t l = 0, t = 0, r = 0, b = 0;
2422		381	uint32_t padding = 0;
2423
2424	3/4 ✓ Branch 0 taken 6 times. ✓ Branch 1 taken 375 times. ✗ Branch 2 not taken. ✓ Branch 3 taken 6 times.	381	if (mkv_projection->private.size && priv_data[0] != 0) {
2425		✗	av_log(logctx, AV_LOG_WARNING, "Unknown spherical metadata\n");
2426		✗	return 0;
2427			}
2428
2429	2/4 ✓ Branch 0 taken 375 times. ✓ Branch 1 taken 6 times. ✗ Branch 2 not taken. ✗ Branch 3 not taken.	381	switch (track->video.projection.type) {
2430		375	case MATROSKA_VIDEO_PROJECTION_TYPE_RECTANGULAR:
2431		375	return mkv_create_display_matrix(st, mkv_projection, logctx);
2432		6	case MATROSKA_VIDEO_PROJECTION_TYPE_EQUIRECTANGULAR:
2433	1/2 ✓ Branch 0 taken 6 times. ✗ Branch 1 not taken.	6	if (track->video.projection.private.size == 20) {
2434		6	t = AV_RB32(priv_data + 4);
2435		6	b = AV_RB32(priv_data + 8);
2436		6	l = AV_RB32(priv_data + 12);
2437		6	r = AV_RB32(priv_data + 16);
2438
2439	2/4 ✓ Branch 0 taken 6 times. ✗ Branch 1 not taken. ✗ Branch 2 not taken. ✓ Branch 3 taken 6 times.	6	if (b >= UINT_MAX - t || r >= UINT_MAX - l) {
2440		✗	av_log(logctx, AV_LOG_ERROR,
2441			"Invalid bounding rectangle coordinates "
2442			"%"PRIu32",%"PRIu32",%"PRIu32",%"PRIu32"\n",
2443			l, t, r, b);
2444		✗	return AVERROR_INVALIDDATA;
2445			}
2446		✗	} else if (track->video.projection.private.size != 0) {
2447		✗	av_log(logctx, AV_LOG_ERROR, "Unknown spherical metadata\n");
2448		✗	return AVERROR_INVALIDDATA;
2449			}
2450
2451	1/8 ✗ Branch 0 not taken. ✓ Branch 1 taken 6 times. ✗ Branch 2 not taken. ✗ Branch 3 not taken. ✗ Branch 4 not taken. ✗ Branch 5 not taken. ✗ Branch 6 not taken. ✗ Branch 7 not taken.	6	if (l || t || r || b)
2452		6	projection = AV_SPHERICAL_EQUIRECTANGULAR_TILE;
2453			else
2454		✗	projection = AV_SPHERICAL_EQUIRECTANGULAR;
2455		6	break;
2456		✗	case MATROSKA_VIDEO_PROJECTION_TYPE_CUBEMAP:
2457		✗	if (track->video.projection.private.size < 4) {
2458		✗	av_log(logctx, AV_LOG_ERROR, "Missing projection private properties\n");
2459		✗	return AVERROR_INVALIDDATA;
2460		✗	} else if (track->video.projection.private.size == 12) {
2461		✗	uint32_t layout = AV_RB32(priv_data + 4);
2462		✗	if (layout) {
2463		✗	av_log(logctx, AV_LOG_WARNING,
2464			"Unknown spherical cubemap layout %"PRIu32"\n", layout);
2465		✗	return 0;
2466			}
2467		✗	projection = AV_SPHERICAL_CUBEMAP;
2468		✗	padding = AV_RB32(priv_data + 8);
2469			} else {
2470		✗	av_log(logctx, AV_LOG_ERROR, "Unknown spherical metadata\n");
2471		✗	return AVERROR_INVALIDDATA;
2472			}
2473		✗	break;
2474		✗	default:
2475		✗	av_log(logctx, AV_LOG_WARNING,
2476			"Unknown spherical metadata type %"PRIu64"\n",
2477		✗	track->video.projection.type);
2478		✗	return 0;
2479			}
2480
2481		6	spherical = av_spherical_alloc(&spherical_size);
2482	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 6 times.	6	if (!spherical)
2483		✗	return AVERROR(ENOMEM);
2484
2485		6	spherical->projection = projection;
2486
2487		6	spherical->yaw = (int32_t) (track->video.projection.yaw * (1 << 16));
2488		6	spherical->pitch = (int32_t) (track->video.projection.pitch * (1 << 16));
2489		6	spherical->roll = (int32_t) (track->video.projection.roll * (1 << 16));
2490
2491		6	spherical->padding = padding;
2492
2493		6	spherical->bound_left = l;
2494		6	spherical->bound_top = t;
2495		6	spherical->bound_right = r;
2496		6	spherical->bound_bottom = b;
2497
2498	1/2 ✗ Branch 1 not taken. ✓ Branch 2 taken 6 times.	6	if (!av_packet_side_data_add(&st->codecpar->coded_side_data, &st->codecpar->nb_coded_side_data,
2499			AV_PKT_DATA_SPHERICAL, spherical, spherical_size, 0)) {
2500		✗	av_freep(&spherical);
2501		✗	return AVERROR(ENOMEM);
2502			}
2503
2504		6	return 0;
2505			}
2506
2507		15	static int mkv_parse_dvcc_dvvc(AVFormatContext *s, AVStream *st, const MatroskaTrack *track,
2508			EbmlBin *bin)
2509			{
2510		15	return ff_isom_parse_dvcc_dvvc(s, st, bin->data, bin->size);
2511			}
2512
2513		11	static int mkv_parse_hvce(AVFormatContext *s, AVStream *st, EbmlBin *bin)
2514			{
2515			AVPacketSideData *sd;
2516
2517	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 11 times.	11	if (bin->size < 23) {
2518		✗	av_log(s, AV_LOG_ERROR, "Invalid hvcE size %d\n", bin->size);
2519		✗	return AVERROR_INVALIDDATA;
2520			}
2521
2522		11	sd = av_packet_side_data_new(&st->codecpar->coded_side_data,
2523		11	&st->codecpar->nb_coded_side_data,
2524			AV_PKT_DATA_HEVC_CONF,
2525		11	bin->size, 0);
2526	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 11 times.	11	if (!sd)
2527		✗	return AVERROR(ENOMEM);
2528
2529		11	memcpy(sd->data, bin->data, bin->size);
2530		11	return 0;
2531			}
2532
2533		501	static int mkv_parse_block_addition_mappings(AVFormatContext *s, AVStream *st, MatroskaTrack *track)
2534			{
2535		501	const EbmlList *mappings_list = &track->block_addition_mappings;
2536		501	MatroskaBlockAdditionMapping *mappings = mappings_list->elem;
2537		501	int nb_itutt35 = 0;
2538			int ret;
2539
2540	2/2 ✓ Branch 0 taken 33 times. ✓ Branch 1 taken 501 times.	534	for (int i = 0; i < mappings_list->nb_elem; i++) {
2541		33	MatroskaBlockAdditionMapping *mapping = &mappings[i];
2542
2543	2/2 ✓ Branch 0 taken 7 times. ✓ Branch 1 taken 26 times.	33	switch (mapping->type) {
2544		7	case MATROSKA_BLOCK_ADD_ID_TYPE_ITU_T_T35:
2545	1/4 ✗ Branch 0 not taken. ✓ Branch 1 taken 7 times. ✗ Branch 2 not taken. ✗ Branch 3 not taken.	7	if (nb_itutt35 && mapping->extradata.size < 4) {
2546		✗	av_log(s, AV_LOG_ERROR, "One or more maps for BlockAddIDType 4 lack extradata\n");
2547		✗	return AVERROR_INVALIDDATA;
2548			}
2549		7	nb_itutt35++;
2550		7	break;
2551		26	default:
2552		26	break;
2553			}
2554			}
2555
2556	2/2 ✓ Branch 0 taken 33 times. ✓ Branch 1 taken 501 times.	534	for (int i = 0; i < mappings_list->nb_elem; i++) {
2557		33	MatroskaBlockAdditionMapping *mapping = &mappings[i];
2558		33	uint64_t type = mapping->type;
2559
2560	3/5 ✗ Branch 0 not taken. ✗ Branch 1 not taken. ✓ Branch 2 taken 15 times. ✓ Branch 3 taken 11 times. ✓ Branch 4 taken 7 times.	33	switch (mapping->type) {
2561		✗	case MATROSKA_BLOCK_ADD_ID_TYPE_DEFAULT:
2562		✗	av_log(s, AV_LOG_DEBUG,
2563			"Explicit block Addition Mapping type \"Use BlockAddIDValue\", value %"PRIu64","
2564		✗	" name \"%s\" found.\n", mapping->value, mapping->name ? mapping->name : "");
2565		✗	type = MATROSKA_BLOCK_ADD_ID_TYPE_OPAQUE;
2566			av_fallthrough;
2567		✗	case MATROSKA_BLOCK_ADD_ID_TYPE_OPAQUE:
2568		✗	if (mapping->value != type) {
2569		✗	int strict = s->strict_std_compliance >= FF_COMPLIANCE_STRICT;
2570		✗	av_log(s, strict ? AV_LOG_ERROR : AV_LOG_WARNING,
2571			"Invalid Block Addition Value 0x%"PRIx64" for Block Addition Mapping Type "
2572			"0x%"PRIx64", name \"%s\"\n", mapping->value, mapping->type,
2573		✗	mapping->name ? mapping->name : "");
2574		✗	if (strict)
2575		✗	return AVERROR_INVALIDDATA;
2576			}
2577		✗	break;
2578		15	case MATROSKA_BLOCK_ADD_ID_TYPE_DVCC:
2579			case MATROSKA_BLOCK_ADD_ID_TYPE_DVVC:
2580	1/2 ✗ Branch 1 not taken. ✓ Branch 2 taken 15 times.	15	if ((ret = mkv_parse_dvcc_dvvc(s, st, track, &mapping->extradata)) < 0)
2581		✗	return ret;
2582
2583		15	break;
2584		11	case MATROSKA_BLOCK_ADD_ID_TYPE_HVCE:
2585	1/2 ✗ Branch 1 not taken. ✓ Branch 2 taken 11 times.	11	if ((ret = mkv_parse_hvce(s, st, &mapping->extradata)) < 0)
2586		✗	return ret;
2587
2588		11	break;
2589		7	default:
2590		7	av_log(s, AV_LOG_DEBUG,
2591			"Unknown Block Addition Mapping type 0x%"PRIx64", value %"PRIu64", name \"%s\"\n",
2592	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 7 times.	7	mapping->type, mapping->value, mapping->name ? mapping->name : "");
2593	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 7 times.	7	if (mapping->value < 2) {
2594		✗	int strict = s->strict_std_compliance >= FF_COMPLIANCE_STRICT;
2595		✗	av_log(s, strict ? AV_LOG_ERROR : AV_LOG_WARNING,
2596			"Invalid Block Addition value 0x%"PRIu64" for unknown Block Addition Mapping "
2597			"type %"PRIx64", name \"%s\"\n", mapping->value, mapping->type,
2598		✗	mapping->name ? mapping->name : "");
2599		✗	if (strict)
2600		✗	return AVERROR_INVALIDDATA;
2601			}
2602		7	break;
2603			}
2604			}
2605
2606		501	return 0;
2607			}
2608
2609		1	static int get_qt_codec(MatroskaTrack *track, uint32_t *fourcc, enum AVCodecID *codec_id)
2610			{
2611			const AVCodecTag *codec_tags;
2612
2613		2	codec_tags = track->type == MATROSKA_TRACK_TYPE_VIDEO ?
2614	1/2 ✓ Branch 0 taken 1 times. ✗ Branch 1 not taken.	1	ff_codec_movvideo_tags : ff_codec_movaudio_tags;
2615
2616			/* Normalize noncompliant private data that starts with the fourcc
2617			* by expanding/shifting the data by 4 bytes and storing the data
2618			* size at the start. */
2619	1/2 ✗ Branch 1 not taken. ✓ Branch 2 taken 1 times.	1	if (ff_codec_get_id(codec_tags, AV_RL32(track->codec_priv.data))) {
2620		✗	int ret = av_buffer_realloc(&track->codec_priv.buf,
2621		✗	track->codec_priv.size + 4 + AV_INPUT_BUFFER_PADDING_SIZE);
2622		✗	if (ret < 0)
2623		✗	return ret;
2624
2625		✗	track->codec_priv.data = track->codec_priv.buf->data;
2626		✗	memmove(track->codec_priv.data + 4, track->codec_priv.data, track->codec_priv.size);
2627		✗	track->codec_priv.size += 4;
2628		✗	AV_WB32(track->codec_priv.data, track->codec_priv.size);
2629			}
2630
2631		1	*fourcc = AV_RL32(track->codec_priv.data + 4);
2632		1	*codec_id = ff_codec_get_id(codec_tags, *fourcc);
2633
2634		1	return 0;
2635			}
2636
2637			/* An enum with potential return values of the functions for parsing a track.
2638			* Apart from that all these functions can also indicate ordinary errors via
2639			* negative return values. */
2640			enum {
2641			SKIP_TRACK = 1,
2642			};
2643
2644			#define AAC_MAX_EXTRADATA_SIZE 5
2645			#define TTA_EXTRADATA_SIZE 22
2646			#define WAVPACK_EXTRADATA_SIZE 2
2647			/* Performs the codec-specific part of parsing an audio track. */
2648		95	static int mka_parse_audio_codec(MatroskaTrack *track, AVCodecParameters *par,
2649			const MatroskaDemuxContext *matroska,
2650			AVFormatContext *s, int *extradata_offset)
2651			{
2652			uint8_t extradata[FFMAX3(AAC_MAX_EXTRADATA_SIZE,
2653			TTA_EXTRADATA_SIZE,
2654			WAVPACK_EXTRADATA_SIZE)];
2655		95	int extradata_size = 0; // > 0 means that the extradata buffer is used
2656			int ret;
2657
2658	2/2 ✓ Branch 0 taken 1 times. ✓ Branch 1 taken 94 times.	95	if (!strcmp(track->codec_id, "A_MS/ACM") &&
2659	1/2 ✓ Branch 0 taken 1 times. ✗ Branch 1 not taken.	1	track->codec_priv.size >= 14) {
2660			FFIOContext b;
2661		1	ffio_init_read_context(&b, track->codec_priv.data,
2662			track->codec_priv.size);
2663		1	ret = ff_get_wav_header(s, &b.pub, par,
2664			track->codec_priv.size, 0);
2665	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 1 times.	1	if (ret < 0)
2666		✗	return ret;
2667		1	*extradata_offset = FFMIN(track->codec_priv.size, 18);
2668		1	return 0;
2669	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 94 times.	94	} else if (!strcmp(track->codec_id, "A_QUICKTIME") &&
2670			/* Normally 36, but allow noncompliant private data */
2671		✗	track->codec_priv.size >= 32) {
2672			enum AVCodecID codec_id;
2673			uint32_t fourcc;
2674			uint16_t sample_size;
2675
2676		✗	ret = get_qt_codec(track, &fourcc, &codec_id);
2677		✗	if (ret < 0)
2678		✗	return ret;
2679		✗	sample_size = AV_RB16(track->codec_priv.data + 26);
2680		✗	if (fourcc == 0) {
2681		✗	if (sample_size == 8) {
2682		✗	fourcc = MKTAG('r','a','w',' ');
2683		✗	codec_id = ff_codec_get_id(ff_codec_movaudio_tags, fourcc);
2684		✗	} else if (sample_size == 16) {
2685		✗	fourcc = MKTAG('t','w','o','s');
2686		✗	codec_id = ff_codec_get_id(ff_codec_movaudio_tags, fourcc);
2687			}
2688			}
2689		✗	if ((fourcc == MKTAG('t','w','o','s') ||
2690		✗	fourcc == MKTAG('s','o','w','t')) && sample_size == 8)
2691		✗	codec_id = AV_CODEC_ID_PCM_S8;
2692		✗	par->codec_id = codec_id;
2693		✗	par->codec_tag = fourcc;
2694		✗	return 0;
2695			}
2696
2697	9/12 ✓ Branch 0 taken 5 times. ✓ Branch 1 taken 7 times. ✗ Branch 2 not taken. ✓ Branch 3 taken 16 times. ✓ Branch 4 taken 2 times. ✓ Branch 5 taken 3 times. ✗ Branch 6 not taken. ✗ Branch 7 not taken. ✓ Branch 8 taken 1 times. ✓ Branch 9 taken 9 times. ✓ Branch 10 taken 2 times. ✓ Branch 11 taken 49 times.	94	switch (par->codec_id) {
2698		5	case AV_CODEC_ID_PCM_S16BE:
2699	3/4 ✗ Branch 0 not taken. ✓ Branch 1 taken 1 times. ✓ Branch 2 taken 2 times. ✓ Branch 3 taken 2 times.	5	switch (track->audio.bitdepth) {
2700		✗	case 8:
2701		✗	par->codec_id = AV_CODEC_ID_PCM_U8;
2702		✗	break;
2703		1	case 24:
2704		1	par->codec_id = AV_CODEC_ID_PCM_S24BE;
2705		1	break;
2706		2	case 32:
2707		2	par->codec_id = AV_CODEC_ID_PCM_S32BE;
2708		2	break;
2709			}
2710		5	break;
2711		7	case AV_CODEC_ID_PCM_S16LE:
2712	4/4 ✓ Branch 0 taken 1 times. ✓ Branch 1 taken 3 times. ✓ Branch 2 taken 2 times. ✓ Branch 3 taken 1 times.	7	switch (track->audio.bitdepth) {
2713		1	case 8:
2714		1	par->codec_id = AV_CODEC_ID_PCM_U8;
2715		1	break;
2716		3	case 24:
2717		3	par->codec_id = AV_CODEC_ID_PCM_S24LE;
2718		3	break;
2719		2	case 32:
2720		2	par->codec_id = AV_CODEC_ID_PCM_S32LE;
2721		2	break;
2722			}
2723		7	break;
2724		✗	case AV_CODEC_ID_PCM_F32LE:
2725		✗	if (track->audio.bitdepth == 64)
2726		✗	par->codec_id = AV_CODEC_ID_PCM_F64LE;
2727		✗	break;
2728		16	case AV_CODEC_ID_AAC:
2729	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 16 times.	16	if (!track->codec_priv.size) {
2730		✗	int profile = matroska_aac_profile(track->codec_id);
2731		✗	int sri = matroska_aac_sri(track->audio.samplerate);
2732
2733		✗	extradata[0] = (profile << 3) | ((sri & 0x0E) >> 1);
2734		✗	extradata[1] = ((sri & 0x01) << 7) | (track->audio.channels << 3);
2735		✗	if (strstr(track->codec_id, "SBR")) {
2736		✗	sri = matroska_aac_sri(track->audio.out_samplerate);
2737		✗	extradata[2] = 0x56;
2738		✗	extradata[3] = 0xE5;
2739		✗	extradata[4] = 0x80 | (sri << 3);
2740		✗	extradata_size = 5;
2741			} else
2742		✗	extradata_size = 2;
2743			}
2744		16	break;
2745		2	case AV_CODEC_ID_ALAC:
2746	2/4 ✓ Branch 0 taken 2 times. ✗ Branch 1 not taken. ✓ Branch 2 taken 2 times. ✗ Branch 3 not taken.	2	if (track->codec_priv.size && track->codec_priv.size < INT_MAX - 12 - AV_INPUT_BUFFER_PADDING_SIZE) {
2747			/* Only ALAC's magic cookie is stored in Matroska's track headers.
2748			* Create the "atom size", "tag", and "tag version" fields the
2749			* decoder expects manually. */
2750		2	ret = ff_alloc_extradata(par, 12 + track->codec_priv.size);
2751	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 2 times.	2	if (ret < 0)
2752		✗	return ret;
2753		2	AV_WB32(par->extradata, par->extradata_size);
2754		2	AV_WB32(&par->extradata[4], MKBETAG('a', 'l', 'a', 'c'));
2755		2	AV_WB32(&par->extradata[8], 0);
2756		2	memcpy(&par->extradata[12], track->codec_priv.data,
2757		2	track->codec_priv.size);
2758			}
2759		2	break;
2760		3	case AV_CODEC_ID_TTA:
2761			{
2762			uint8_t *ptr;
2763	1/2 ✓ Branch 0 taken 3 times. ✗ Branch 1 not taken.	3	if (track->audio.channels > UINT16_MAX ||
2764	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 3 times.	3	track->audio.bitdepth > UINT16_MAX) {
2765		✗	av_log(matroska->ctx, AV_LOG_WARNING,
2766			"Too large audio channel number %"PRIu64
2767			" or bitdepth %"PRIu64". Skipping track.\n",
2768			track->audio.channels, track->audio.bitdepth);
2769		✗	if (matroska->ctx->error_recognition & AV_EF_EXPLODE)
2770		✗	return AVERROR_INVALIDDATA;
2771			else
2772		✗	return SKIP_TRACK;
2773			}
2774	2/4 ✓ Branch 0 taken 3 times. ✗ Branch 1 not taken. ✗ Branch 2 not taken. ✓ Branch 3 taken 3 times.	3	if (track->audio.out_samplerate < 0 || track->audio.out_samplerate > INT_MAX)
2775		✗	return AVERROR_INVALIDDATA;
2776		3	extradata_size = TTA_EXTRADATA_SIZE;
2777		3	ptr = extradata;
2778		3	bytestream_put_be32(&ptr, AV_RB32("TTA1"));
2779		3	bytestream_put_le16(&ptr, 1);
2780		3	bytestream_put_le16(&ptr, track->audio.channels);
2781		3	bytestream_put_le16(&ptr, track->audio.bitdepth);
2782		3	bytestream_put_le32(&ptr, track->audio.out_samplerate);
2783		3	bytestream_put_le32(&ptr, av_rescale(matroska->duration * matroska->time_scale,
2784		3	track->audio.out_samplerate,
2785			AV_TIME_BASE * 1000));
2786		3	break;
2787			}
2788		✗	case AV_CODEC_ID_RA_144:
2789		✗	track->audio.out_samplerate = 8000;
2790		✗	track->audio.channels = 1;
2791		✗	break;
2792		✗	case AV_CODEC_ID_RA_288:
2793			case AV_CODEC_ID_COOK:
2794			case AV_CODEC_ID_ATRAC3:
2795			case AV_CODEC_ID_SIPR:
2796			{
2797		✗	const uint8_t *ptr = track->codec_priv.data;
2798			int flavor;
2799
2800		✗	if (!track->codec_priv.size)
2801		✗	break;
2802
2803		✗	if (track->codec_priv.size < 46)
2804		✗	return AVERROR_INVALIDDATA;
2805		✗	ptr += 22;
2806		✗	flavor = bytestream_get_be16(&ptr);
2807		✗	track->audio.coded_framesize = bytestream_get_be32(&ptr);
2808		✗	ptr += 12;
2809		✗	track->audio.sub_packet_h = bytestream_get_be16(&ptr);
2810		✗	track->audio.frame_size = bytestream_get_be16(&ptr);
2811		✗	track->audio.sub_packet_size = bytestream_get_be16(&ptr);
2812		✗	if (track->audio.coded_framesize <= 0 ||
2813		✗	track->audio.sub_packet_h <= 0 ||
2814		✗	track->audio.frame_size <= 0)
2815		✗	return AVERROR_INVALIDDATA;
2816
2817		✗	if (par->codec_id == AV_CODEC_ID_RA_288) {
2818		✗	if (track->audio.sub_packet_h & 1 || 2 * track->audio.frame_size
2819		✗	!= (int64_t)track->audio.sub_packet_h * track->audio.coded_framesize)
2820		✗	return AVERROR_INVALIDDATA;
2821		✗	par->block_align = track->audio.coded_framesize;
2822		✗	track->codec_priv.size = 0;
2823			} else {
2824		✗	if (par->codec_id == AV_CODEC_ID_SIPR) {
2825			static const int sipr_bit_rate[4] = { 6504, 8496, 5000, 16000 };
2826		✗	if (flavor > 3)
2827		✗	return AVERROR_INVALIDDATA;
2828		✗	track->audio.sub_packet_size = ff_sipr_subpk_size[flavor];
2829		✗	par->bit_rate = sipr_bit_rate[flavor];
2830		✗	} else if (track->audio.sub_packet_size <= 0 ||
2831		✗	track->audio.frame_size % track->audio.sub_packet_size)
2832		✗	return AVERROR_INVALIDDATA;
2833		✗	par->block_align = track->audio.sub_packet_size;
2834		✗	*extradata_offset = 78;
2835			}
2836		✗	if (par->block_align <= 0 ||
2837		✗	track->audio.sub_packet_h * (unsigned)track->audio.frame_size > INT_MAX ||
2838		✗	track->audio.frame_size * track->audio.sub_packet_h < par->block_align)
2839		✗	return AVERROR_INVALIDDATA;
2840		✗	track->audio.buf = av_malloc_array(track->audio.sub_packet_h,
2841		✗	track->audio.frame_size);
2842		✗	if (!track->audio.buf)
2843		✗	return AVERROR(ENOMEM);
2844		✗	break;
2845			}
2846		1	case AV_CODEC_ID_ATRAC1:
2847			/* ATRAC1 uses a constant frame size.
2848			* Typical ATRAC1 streams are either mono or stereo.
2849			* At most, ATRAC1 was used to store 8 channels of audio. */
2850	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 1 times.	1	if (track->audio.channels > 8)
2851		✗	return AVERROR_INVALIDDATA;
2852		1	par->block_align = track->audio.channels * 212;
2853		1	break;
2854		9	case AV_CODEC_ID_FLAC:
2855	1/2 ✓ Branch 0 taken 9 times. ✗ Branch 1 not taken.	9	if (track->codec_priv.size) {
2856		9	ret = matroska_parse_flac(s, track, extradata_offset);
2857	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 9 times.	9	if (ret < 0)
2858		✗	return ret;
2859			}
2860		9	break;
2861		2	case AV_CODEC_ID_WAVPACK:
2862	2/2 ✓ Branch 0 taken 1 times. ✓ Branch 1 taken 1 times.	2	if (track->codec_priv.size < 2) {
2863		1	av_log(matroska->ctx, AV_LOG_INFO, "Assuming WavPack version 4.10 "
2864			"in absence of valid CodecPrivate.\n");
2865		1	extradata_size = WAVPACK_EXTRADATA_SIZE;
2866		1	AV_WL16(extradata, 0x410);
2867			}
2868		2	break;
2869			}
2870
2871	2/2 ✓ Branch 0 taken 4 times. ✓ Branch 1 taken 90 times.	94	if (extradata_size > 0) {
2872		4	ret = ff_alloc_extradata(par, extradata_size);
2873	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 4 times.	4	if (ret < 0)
2874		✗	return ret;
2875		4	memcpy(par->extradata, extradata, extradata_size);
2876			}
2877
2878		94	return 0;
2879			}
2880
2881			/* Performs the generic part of parsing an audio track. */
2882		95	static int mka_parse_audio(MatroskaTrack *track, AVStream *st,
2883			AVCodecParameters *par,
2884			const MatroskaDemuxContext *matroska,
2885			AVFormatContext *s, int *extradata_offset)
2886			{
2887		95	FFStream *const sti = ffstream(st);
2888			int ret;
2889
2890		95	ret = mka_parse_audio_codec(track, par, matroska,
2891			s, extradata_offset);
2892	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 95 times.	95	if (ret)
2893		✗	return ret;
2894
2895		95	par->codec_type = AVMEDIA_TYPE_AUDIO;
2896		95	par->sample_rate = track->audio.out_samplerate;
2897			// channel layout may be already set by codec private checks above
2898	2/2 ✓ Branch 1 taken 86 times. ✓ Branch 2 taken 9 times.	95	if (!av_channel_layout_check(&par->ch_layout)) {
2899	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 86 times.	86	if (track->audio.channels > INT32_MAX)
2900		✗	return AVERROR_PATCHWELCOME;
2901		86	par->ch_layout.order = AV_CHANNEL_ORDER_UNSPEC;
2902		86	par->ch_layout.nb_channels = track->audio.channels;
2903			}
2904	2/2 ✓ Branch 0 taken 94 times. ✓ Branch 1 taken 1 times.	95	if (!par->bits_per_coded_sample)
2905		94	par->bits_per_coded_sample = track->audio.bitdepth;
2906	2/2 ✓ Branch 0 taken 94 times. ✓ Branch 1 taken 1 times.	95	if (par->codec_id == AV_CODEC_ID_MP3 ||
2907	1/2 ✓ Branch 0 taken 94 times. ✗ Branch 1 not taken.	94	par->codec_id == AV_CODEC_ID_MLP ||
2908	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 94 times.	94	par->codec_id == AV_CODEC_ID_TRUEHD)
2909		1	sti->need_parsing = AVSTREAM_PARSE_FULL;
2910	2/2 ✓ Branch 0 taken 78 times. ✓ Branch 1 taken 16 times.	94	else if (par->codec_id != AV_CODEC_ID_AAC)
2911		78	sti->need_parsing = AVSTREAM_PARSE_HEADERS;
2912	2/2 ✓ Branch 0 taken 23 times. ✓ Branch 1 taken 72 times.	95	if (track->codec_delay > 0) {
2913		23	par->initial_padding = av_rescale_q(track->codec_delay,
2914		23	(AVRational){1, 1000000000},
2915		46	(AVRational){1, par->codec_id == AV_CODEC_ID_OPUS ?
2916	2/2 ✓ Branch 0 taken 10 times. ✓ Branch 1 taken 13 times.	23	48000 : par->sample_rate});
2917		23	sti->skip_samples = par->initial_padding;
2918			}
2919	2/2 ✓ Branch 0 taken 14 times. ✓ Branch 1 taken 81 times.	95	if (track->seek_preroll > 0) {
2920		14	par->seek_preroll = av_rescale_q(track->seek_preroll,
2921		14	(AVRational){1, 1000000000},
2922		14	(AVRational){1, par->sample_rate});
2923			}
2924
2925		95	return 0;
2926			}
2927
2928			/* Performs the codec-specific part of parsing a video track. */
2929		381	static int mkv_parse_video_codec(MatroskaTrack *track, AVCodecParameters *par,
2930			const MatroskaDemuxContext *matroska,
2931			int *extradata_offset)
2932			{
2933	2/2 ✓ Branch 0 taken 5 times. ✓ Branch 1 taken 376 times.	381	if (!strcmp(track->codec_id, "V_MS/VFW/FOURCC") &&
2934	1/2 ✓ Branch 0 taken 5 times. ✗ Branch 1 not taken.	5	track->codec_priv.size >= 40) {
2935		5	uint32_t size = AV_RL32A(track->codec_priv.data);
2936			// VFW extradata is padded to an even length, yet
2937			// the size field contains the real length.
2938	1/4 ✗ Branch 0 not taken. ✓ Branch 1 taken 5 times. ✗ Branch 2 not taken. ✗ Branch 3 not taken.	5	if (size & 1 && size == track->codec_priv.size - 1)
2939		✗	--track->codec_priv.size;
2940		5	track->ms_compat = 1;
2941		5	par->bits_per_coded_sample = AV_RL16(track->codec_priv.data + 14);
2942		5	par->codec_tag = AV_RL32(track->codec_priv.data + 16);
2943		5	par->codec_id = ff_codec_get_id(ff_codec_bmp_tags,
2944			par->codec_tag);
2945	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 5 times.	5	if (!par->codec_id)
2946		✗	par->codec_id = ff_codec_get_id(ff_codec_movvideo_tags,
2947			par->codec_tag);
2948		5	*extradata_offset = 40;
2949		5	return 0;
2950	2/2 ✓ Branch 0 taken 1 times. ✓ Branch 1 taken 375 times.	376	} else if (!strcmp(track->codec_id, "V_QUICKTIME") &&
2951	1/2 ✓ Branch 0 taken 1 times. ✗ Branch 1 not taken.	1	track->codec_priv.size >= 21) {
2952			enum AVCodecID codec_id;
2953			uint32_t fourcc;
2954		1	int ret = get_qt_codec(track, &fourcc, &codec_id);
2955	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 1 times.	1	if (ret < 0)
2956		✗	return ret;
2957	1/4 ✗ Branch 0 not taken. ✓ Branch 1 taken 1 times. ✗ Branch 2 not taken. ✗ Branch 3 not taken.	1	if (codec_id == AV_CODEC_ID_NONE && AV_RL32(track->codec_priv.data+4) == AV_RL32("SMI ")) {
2958		✗	fourcc = MKTAG('S','V','Q','3');
2959		✗	codec_id = ff_codec_get_id(ff_codec_movvideo_tags, fourcc);
2960			}
2961		1	par->codec_id = codec_id;
2962	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 1 times.	1	if (codec_id == AV_CODEC_ID_NONE)
2963		✗	av_log(matroska->ctx, AV_LOG_ERROR,
2964		✗	"mov FourCC not found %s.\n", av_fourcc2str(fourcc));
2965	1/2 ✓ Branch 0 taken 1 times. ✗ Branch 1 not taken.	1	if (track->codec_priv.size >= 86) {
2966			FFIOContext b;
2967		1	unsigned bit_depth = AV_RB16(track->codec_priv.data + 82);
2968		1	ffio_init_read_context(&b, track->codec_priv.data,
2969			track->codec_priv.size);
2970	1/2 ✗ Branch 1 not taken. ✓ Branch 2 taken 1 times.	1	if (ff_get_qtpalette(codec_id, &b.pub, track->palette)) {
2971		✗	bit_depth &= 0x1F;
2972		✗	track->has_palette = 1;
2973			}
2974		1	par->bits_per_coded_sample = bit_depth;
2975			}
2976		1	par->codec_tag = fourcc;
2977		1	return 0;
2978			}
2979
2980	3/4 ✗ Branch 0 not taken. ✓ Branch 1 taken 5 times. ✓ Branch 2 taken 250 times. ✓ Branch 3 taken 120 times.	375	switch (par->codec_id) {
2981		✗	case AV_CODEC_ID_RV10:
2982			case AV_CODEC_ID_RV20:
2983			case AV_CODEC_ID_RV30:
2984			case AV_CODEC_ID_RV40:
2985		✗	*extradata_offset = 26;
2986		✗	break;
2987		5	case AV_CODEC_ID_PRORES:
2988	1/2 ✓ Branch 0 taken 5 times. ✗ Branch 1 not taken.	5	if (track->codec_priv.size == 4)
2989		5	par->codec_tag = AV_RL32(track->codec_priv.data);
2990		5	break;
2991		250	case AV_CODEC_ID_VP9:
2992			/* we don't need any value stored in CodecPrivate.
2993			* make sure that it's not exported as extradata. */
2994		250	track->codec_priv.size = 0;
2995		250	break;
2996			}
2997
2998		375	return 0;
2999			}
3000
3001			/* Performs the generic part of parsing a video track. */
3002		381	static int mkv_parse_video(MatroskaTrack *track, AVStream *st,
3003			AVCodecParameters *par,
3004			const MatroskaDemuxContext *matroska,
3005			int *extradata_offset)
3006			{
3007		381	FFStream *const sti = ffstream(st);
3008			MatroskaTrackPlane *planes;
3009		381	int display_width_mul = 1;
3010		381	int display_height_mul = 1;
3011			int ret;
3012
3013	2/2 ✓ Branch 0 taken 4 times. ✓ Branch 1 taken 377 times.	381	if (track->video.color_space.size == 4)
3014		4	par->codec_tag = AV_RL32(track->video.color_space.data);
3015
3016		381	ret = mkv_parse_video_codec(track, par, matroska,
3017			extradata_offset);
3018	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 381 times.	381	if (ret < 0)
3019		✗	return ret;
3020
3021		381	par->codec_type = AVMEDIA_TYPE_VIDEO;
3022		381	par->width = track->video.pixel_width;
3023		381	par->height = track->video.pixel_height;
3024
3025	2/2 ✓ Branch 0 taken 7 times. ✓ Branch 1 taken 374 times.	381	if (track->video.interlaced == MATROSKA_VIDEO_INTERLACE_FLAG_INTERLACED)
3026		7	par->field_order = mkv_field_order(matroska, track->video.field_order);
3027	2/2 ✓ Branch 0 taken 34 times. ✓ Branch 1 taken 340 times.	374	else if (track->video.interlaced == MATROSKA_VIDEO_INTERLACE_FLAG_PROGRESSIVE)
3028		34	par->field_order = AV_FIELD_PROGRESSIVE;
3029
3030	4/4 ✓ Branch 0 taken 152 times. ✓ Branch 1 taken 229 times. ✓ Branch 2 taken 22 times. ✓ Branch 3 taken 130 times.	381	if (track->video.stereo_mode && track->video.stereo_mode < MATROSKA_VIDEO_STEREOMODE_TYPE_NB)
3031		22	mkv_stereo_mode_display_mul(track->video.stereo_mode,
3032			&display_width_mul, &display_height_mul);
3033
3034	2/2 ✓ Branch 0 taken 354 times. ✓ Branch 1 taken 27 times.	381	if (track->video.display_unit < MATROSKA_VIDEO_DISPLAYUNIT_UNKNOWN) {
3035	2/4 ✓ Branch 0 taken 354 times. ✗ Branch 1 not taken. ✓ Branch 2 taken 354 times. ✗ Branch 3 not taken.	354	if (track->video.display_width && track->video.display_height &&
3036	2/4 ✓ Branch 0 taken 354 times. ✗ Branch 1 not taken. ✓ Branch 2 taken 354 times. ✗ Branch 3 not taken.	354	track->video.display_width != -1 && track->video.display_height != -1 &&
3037	1/2 ✓ Branch 0 taken 354 times. ✗ Branch 1 not taken.	354	track->video.cropped_height < INT64_MAX / track->video.display_width / display_width_mul &&
3038	1/2 ✓ Branch 0 taken 354 times. ✗ Branch 1 not taken.	354	track->video.cropped_width < INT64_MAX / track->video.display_height / display_height_mul)
3039		354	av_reduce(&st->sample_aspect_ratio.num,
3040			&st->sample_aspect_ratio.den,
3041		354	track->video.cropped_height * track->video.display_width * display_width_mul,
3042		354	track->video.cropped_width * track->video.display_height * display_height_mul,
3043			INT_MAX);
3044			}
3045	2/2 ✓ Branch 0 taken 377 times. ✓ Branch 1 taken 4 times.	381	if (track->video.cropped_width != track->video.pixel_width ||
3046	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 377 times.	377	track->video.cropped_height != track->video.pixel_height) {
3047			uint8_t *cropping;
3048		4	AVPacketSideData *sd = av_packet_side_data_new(&st->codecpar->coded_side_data,
3049		4	&st->codecpar->nb_coded_side_data,
3050			AV_PKT_DATA_FRAME_CROPPING,
3051			sizeof(uint32_t) * 4, 0);
3052	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 4 times.	4	if (!sd)
3053		✗	return AVERROR(ENOMEM);
3054
3055		4	cropping = sd->data;
3056		4	bytestream_put_le32(&cropping, track->video.pixel_cropt);
3057		4	bytestream_put_le32(&cropping, track->video.pixel_cropb);
3058		4	bytestream_put_le32(&cropping, track->video.pixel_cropl);
3059		4	bytestream_put_le32(&cropping, track->video.pixel_cropr);
3060			}
3061	2/2 ✓ Branch 0 taken 347 times. ✓ Branch 1 taken 34 times.	381	if (par->codec_id != AV_CODEC_ID_HEVC)
3062		347	sti->need_parsing = AVSTREAM_PARSE_HEADERS;
3063
3064	2/2 ✓ Branch 0 taken 338 times. ✓ Branch 1 taken 43 times.	381	if (track->default_duration) {
3065	1/2 ✓ Branch 0 taken 338 times. ✗ Branch 1 not taken.	338	int div = track->default_duration <= INT64_MAX ? 1 : 2;
3066		338	av_reduce(&st->avg_frame_rate.num, &st->avg_frame_rate.den,
3067		338	1000000000 / div, track->default_duration / div, 30000);
3068			#if FF_API_R_FRAME_RATE
3069	2/2 ✓ Branch 0 taken 336 times. ✓ Branch 1 taken 2 times.	338	if ( st->avg_frame_rate.num < st->avg_frame_rate.den * 1000LL
3070	2/2 ✓ Branch 0 taken 315 times. ✓ Branch 1 taken 21 times.	336	&& st->avg_frame_rate.num > st->avg_frame_rate.den * 5LL)
3071		315	st->r_frame_rate = st->avg_frame_rate;
3072			#endif
3073			}
3074
3075			/* export stereo mode flag as metadata tag */
3076	4/4 ✓ Branch 0 taken 152 times. ✓ Branch 1 taken 229 times. ✓ Branch 2 taken 22 times. ✓ Branch 3 taken 130 times.	381	if (track->video.stereo_mode && track->video.stereo_mode < MATROSKA_VIDEO_STEREOMODE_TYPE_NB)
3077		22	av_dict_set(&st->metadata, "stereo_mode", ff_matroska_video_stereo_mode[track->video.stereo_mode], 0);
3078
3079			/* export alpha mode flag as metadata tag */
3080	2/2 ✓ Branch 0 taken 3 times. ✓ Branch 1 taken 378 times.	381	if (track->video.alpha_mode)
3081		3	av_dict_set_int(&st->metadata, "alpha_mode", 1, 0);
3082
3083			/* if we have virtual track, mark the real tracks */
3084		381	planes = track->operation.combine_planes.elem;
3085	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 381 times.	381	for (int j = 0; j < track->operation.combine_planes.nb_elem; j++) {
3086		✗	MatroskaTrack *tracks = matroska->tracks.elem;
3087			char buf[32];
3088		✗	if (planes[j].type >= MATROSKA_VIDEO_STEREO_PLANE_COUNT)
3089		✗	continue;
3090		✗	snprintf(buf, sizeof(buf), "%s_%d",
3091		✗	matroska_video_stereo_plane[planes[j].type], st->index);
3092		✗	for (int k = 0; k < matroska->tracks.nb_elem; k++)
3093		✗	if (planes[j].uid == tracks[k].uid && tracks[k].stream) {
3094		✗	av_dict_set(&tracks[k].stream->metadata,
3095			"stereo_mode", buf, 0);
3096		✗	break;
3097			}
3098			}
3099			// add stream level stereo3d side data if it is a supported format
3100	2/2 ✓ Branch 0 taken 251 times. ✓ Branch 1 taken 130 times.	381	if (track->video.stereo_mode < MATROSKA_VIDEO_STEREOMODE_TYPE_NB &&
3101	2/2 ✓ Branch 0 taken 249 times. ✓ Branch 1 taken 2 times.	251	track->video.stereo_mode != MATROSKA_VIDEO_STEREOMODE_TYPE_ANAGLYPH_CYAN_RED &&
3102	2/2 ✓ Branch 0 taken 247 times. ✓ Branch 1 taken 2 times.	249	track->video.stereo_mode != MATROSKA_VIDEO_STEREOMODE_TYPE_ANAGLYPH_GREEN_MAG) {
3103		247	ret = mkv_stereo3d_conv(st, track->video.stereo_mode);
3104	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 247 times.	247	if (ret < 0)
3105		✗	return ret;
3106			}
3107
3108		381	ret = mkv_parse_video_color(st, track);
3109	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 381 times.	381	if (ret < 0)
3110		✗	return ret;
3111		381	ret = mkv_parse_video_projection(st, track, matroska->ctx);
3112	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 381 times.	381	if (ret < 0)
3113		✗	return ret;
3114
3115		381	return 0;
3116			}
3117
3118			/* Performs the codec-specific part of parsing a subtitle track. */
3119		25	static int mkv_parse_subtitle_codec(MatroskaTrack *track, AVStream *st,
3120			AVCodecParameters *par,
3121			const MatroskaDemuxContext *matroska)
3122			{
3123	2/3 ✗ Branch 0 not taken. ✓ Branch 1 taken 8 times. ✓ Branch 2 taken 17 times.	25	switch (par->codec_id) {
3124		✗	case AV_CODEC_ID_ARIB_CAPTION:
3125		✗	if (track->codec_priv.size == 3) {
3126		✗	int component_tag = track->codec_priv.data[0];
3127		✗	int data_component_id = AV_RB16(track->codec_priv.data + 1);
3128
3129		✗	switch (data_component_id) {
3130		✗	case 0x0008:
3131			// [0x30..0x37] are component tags utilized for
3132			// non-mobile captioning service ("profile A").
3133		✗	if (component_tag >= 0x30 && component_tag <= 0x37) {
3134		✗	par->profile = AV_PROFILE_ARIB_PROFILE_A;
3135			}
3136		✗	break;
3137		✗	case 0x0012:
3138			// component tag 0x87 signifies a mobile/partial reception
3139			// (1seg) captioning service ("profile C").
3140		✗	if (component_tag == 0x87) {
3141		✗	par->profile = AV_PROFILE_ARIB_PROFILE_C;
3142			}
3143		✗	break;
3144		✗	default:
3145		✗	break;
3146			}
3147
3148		✗	if (par->profile == AV_PROFILE_UNKNOWN)
3149		✗	av_log(matroska->ctx, AV_LOG_WARNING,
3150			"Unknown ARIB caption profile utilized: %02x / %04x\n",
3151			component_tag, data_component_id);
3152
3153		✗	track->codec_priv.size = 0;
3154			}
3155		✗	break;
3156		8	case AV_CODEC_ID_WEBVTT:
3157	2/2 ✓ Branch 0 taken 2 times. ✓ Branch 1 taken 6 times.	8	if (!strcmp(track->codec_id, "D_WEBVTT/CAPTIONS")) {
3158		2	st->disposition |= AV_DISPOSITION_CAPTIONS;
3159	2/2 ✓ Branch 0 taken 2 times. ✓ Branch 1 taken 4 times.	6	} else if (!strcmp(track->codec_id, "D_WEBVTT/DESCRIPTIONS")) {
3160		2	st->disposition |= AV_DISPOSITION_DESCRIPTIONS;
3161	2/2 ✓ Branch 0 taken 2 times. ✓ Branch 1 taken 2 times.	4	} else if (!strcmp(track->codec_id, "D_WEBVTT/METADATA")) {
3162		2	st->disposition |= AV_DISPOSITION_METADATA;
3163			}
3164		8	break;
3165			}
3166
3167		25	return 0;
3168			}
3169
3170		421	static int matroska_parse_tracks(AVFormatContext *s)
3171			{
3172		421	MatroskaDemuxContext *matroska = s->priv_data;
3173		421	MatroskaTrack *tracks = matroska->tracks.elem;
3174			int i, j, ret;
3175
3176	2/2 ✓ Branch 0 taken 501 times. ✓ Branch 1 taken 421 times.	922	for (i = 0; i < matroska->tracks.nb_elem; i++) {
3177		501	MatroskaTrack *track = &tracks[i];
3178		501	enum AVCodecID codec_id = AV_CODEC_ID_NONE;
3179			AVCodecParameters *par;
3180			MatroskaTrackType type;
3181		501	int extradata_offset = 0;
3182			AVStream *st;
3183		501	char* key_id_base64 = NULL;
3184
3185			/* Apply some sanity checks. */
3186	2/2 ✓ Branch 0 taken 120 times. ✓ Branch 1 taken 381 times.	501	if (track->type != MATROSKA_TRACK_TYPE_VIDEO &&
3187	2/2 ✓ Branch 0 taken 25 times. ✓ Branch 1 taken 95 times.	120	track->type != MATROSKA_TRACK_TYPE_AUDIO &&
3188	2/2 ✓ Branch 0 taken 4 times. ✓ Branch 1 taken 21 times.	25	track->type != MATROSKA_TRACK_TYPE_SUBTITLE &&
3189	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 4 times.	4	track->type != MATROSKA_TRACK_TYPE_METADATA) {
3190		✗	av_log(matroska->ctx, AV_LOG_INFO,
3191			"Unknown or unsupported track type %"PRIu64"\n",
3192			track->type);
3193		✗	continue;
3194			}
3195	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 501 times.	501	if (!track->codec_id)
3196		✗	continue;
3197
3198	3/4 ✓ Branch 0 taken 95 times. ✓ Branch 1 taken 406 times. ✓ Branch 2 taken 95 times. ✗ Branch 3 not taken.	501	if ( track->type == MATROSKA_TRACK_TYPE_AUDIO && track->codec_id[0] != 'A'
3199	3/4 ✓ Branch 0 taken 381 times. ✓ Branch 1 taken 120 times. ✓ Branch 2 taken 381 times. ✗ Branch 3 not taken.	501	|| track->type == MATROSKA_TRACK_TYPE_VIDEO && track->codec_id[0] != 'V'
3200	5/6 ✓ Branch 0 taken 21 times. ✓ Branch 1 taken 480 times. ✓ Branch 2 taken 17 times. ✓ Branch 3 taken 4 times. ✓ Branch 4 taken 17 times. ✗ Branch 5 not taken.	501	|| track->type == MATROSKA_TRACK_TYPE_SUBTITLE && track->codec_id[0] != 'D' && track->codec_id[0] != 'S'
3201	3/6 ✓ Branch 0 taken 4 times. ✓ Branch 1 taken 497 times. ✗ Branch 2 not taken. ✓ Branch 3 taken 4 times. ✗ Branch 4 not taken. ✗ Branch 5 not taken.	501	|| track->type == MATROSKA_TRACK_TYPE_METADATA && track->codec_id[0] != 'D' && track->codec_id[0] != 'S'
3202			) {
3203		✗	av_log(matroska->ctx, AV_LOG_INFO, "Inconsistent track type\n");
3204		✗	continue;
3205			}
3206
3207	2/4 ✓ Branch 0 taken 501 times. ✗ Branch 1 not taken. ✓ Branch 2 taken 501 times. ✗ Branch 3 not taken.	501	if (track->audio.samplerate < 0 || track->audio.samplerate > INT_MAX ||
3208	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 501 times.	501	isnan(track->audio.samplerate)) {
3209		✗	av_log(matroska->ctx, AV_LOG_WARNING,
3210			"Invalid sample rate %f, defaulting to 8000 instead.\n",
3211			track->audio.samplerate);
3212		✗	track->audio.samplerate = 8000;
3213			}
3214
3215	2/2 ✓ Branch 0 taken 381 times. ✓ Branch 1 taken 120 times.	501	if (track->type == MATROSKA_TRACK_TYPE_VIDEO) {
3216	4/4 ✓ Branch 0 taken 247 times. ✓ Branch 1 taken 134 times. ✓ Branch 2 taken 204 times. ✓ Branch 3 taken 43 times.	381	if (!track->default_duration && track->video.frame_rate > 0) {
3217		204	double default_duration = 1000000000 / track->video.frame_rate;
3218	2/4 ✓ Branch 0 taken 204 times. ✗ Branch 1 not taken. ✗ Branch 2 not taken. ✓ Branch 3 taken 204 times.	204	if (default_duration > UINT64_MAX || default_duration < 0) {
3219		✗	av_log(matroska->ctx, AV_LOG_WARNING,
3220			"Invalid frame rate %e. Cannot calculate default duration.\n",
3221			track->video.frame_rate);
3222			} else {
3223		204	track->default_duration = default_duration;
3224			}
3225			}
3226	1/4 ✗ Branch 0 not taken. ✓ Branch 1 taken 381 times. ✗ Branch 2 not taken. ✗ Branch 3 not taken.	381	int has_dimensions = track->video.pixel_width || track->video.pixel_height;
3227	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 381 times.	381	if ((matroska->ctx->strict_std_compliance >= FF_COMPLIANCE_STRICT &&
3228		✗	(!track->video.pixel_width || !track->video.pixel_height)) ||
3229	1/2 ✓ Branch 0 taken 381 times. ✗ Branch 1 not taken.	381	(track->video.pixel_cropl >= INT_MAX - track->video.pixel_cropr ||
3230	1/2 ✓ Branch 0 taken 381 times. ✗ Branch 1 not taken.	381	track->video.pixel_cropt >= INT_MAX - track->video.pixel_cropb ||
3231	1/2 ✓ Branch 0 taken 381 times. ✗ Branch 1 not taken.	381	(track->video.pixel_cropl + track->video.pixel_cropr) >= track->video.pixel_width + !has_dimensions ||
3232	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 381 times.	381	(track->video.pixel_cropt + track->video.pixel_cropb) >= track->video.pixel_height + !has_dimensions)) {
3233		✗	av_log(matroska->ctx, AV_LOG_ERROR,
3234			"Invalid coded dimensions %"PRId64"x%"PRId64" [%"PRId64", %"PRId64", %"PRId64", %"PRId64"].\n",
3235			track->video.pixel_width, track->video.pixel_height,
3236			track->video.pixel_cropl, track->video.pixel_cropr,
3237			track->video.pixel_cropt, track->video.pixel_cropb);
3238		✗	return AVERROR_INVALIDDATA;
3239			}
3240		381	track->video.cropped_width = track->video.pixel_width -
3241		381	track->video.pixel_cropl - track->video.pixel_cropr;
3242		381	track->video.cropped_height = track->video.pixel_height -
3243		381	track->video.pixel_cropt - track->video.pixel_cropb;
3244	2/2 ✓ Branch 0 taken 339 times. ✓ Branch 1 taken 42 times.	381	if (track->video.display_unit == MATROSKA_VIDEO_DISPLAYUNIT_PIXELS) {
3245	2/2 ✓ Branch 0 taken 277 times. ✓ Branch 1 taken 62 times.	339	if (track->video.display_width == -1)
3246		277	track->video.display_width = track->video.cropped_width;
3247	2/2 ✓ Branch 0 taken 277 times. ✓ Branch 1 taken 62 times.	339	if (track->video.display_height == -1)
3248		277	track->video.display_height = track->video.cropped_height;
3249			}
3250	2/2 ✓ Branch 0 taken 95 times. ✓ Branch 1 taken 25 times.	120	} else if (track->type == MATROSKA_TRACK_TYPE_AUDIO) {
3251	2/2 ✓ Branch 0 taken 94 times. ✓ Branch 1 taken 1 times.	95	if (!track->audio.out_samplerate)
3252		94	track->audio.out_samplerate = track->audio.samplerate;
3253			}
3254		501	ret = matroska_parse_content_encodings(track->encodings.elem,
3255		501	track->encodings.nb_elem,
3256		501	track, &key_id_base64, matroska->ctx);
3257	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 501 times.	501	if (ret < 0)
3258		✗	return ret;
3259
3260	2/2 ✓ Branch 0 taken 29507 times. ✓ Branch 1 taken 7 times.	29514	for (j = 0; ff_mkv_codec_tags[j].id != AV_CODEC_ID_NONE; j++) {
3261	2/2 ✓ Branch 1 taken 494 times. ✓ Branch 2 taken 29013 times.	29507	if (av_strstart(track->codec_id, ff_mkv_codec_tags[j].str, NULL)) {
3262		494	codec_id = ff_mkv_codec_tags[j].id;
3263		494	break;
3264			}
3265			}
3266
3267		501	st = track->stream = avformat_new_stream(s, NULL);
3268	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 501 times.	501	if (!st) {
3269		✗	av_free(key_id_base64);
3270		✗	return AVERROR(ENOMEM);
3271			}
3272		501	par = st->codecpar;
3273
3274		501	par->codec_id = codec_id;
3275
3276	2/2 ✓ Branch 0 taken 391 times. ✓ Branch 1 taken 110 times.	501	if (track->flag_default)
3277		391	st->disposition |= AV_DISPOSITION_DEFAULT;
3278	2/2 ✓ Branch 0 taken 4 times. ✓ Branch 1 taken 497 times.	501	if (track->flag_forced)
3279		4	st->disposition |= AV_DISPOSITION_FORCED;
3280	2/2 ✓ Branch 0 taken 2 times. ✓ Branch 1 taken 499 times.	501	if (track->flag_comment)
3281		2	st->disposition |= AV_DISPOSITION_COMMENT;
3282	2/2 ✓ Branch 0 taken 8 times. ✓ Branch 1 taken 493 times.	501	if (track->flag_hearingimpaired)
3283		8	st->disposition |= AV_DISPOSITION_HEARING_IMPAIRED;
3284	2/2 ✓ Branch 0 taken 2 times. ✓ Branch 1 taken 499 times.	501	if (track->flag_visualimpaired)
3285		2	st->disposition |= AV_DISPOSITION_VISUAL_IMPAIRED;
3286	2/2 ✓ Branch 0 taken 4 times. ✓ Branch 1 taken 497 times.	501	if (track->flag_original.count > 0)
3287		4	st->disposition |= track->flag_original.el.u ? AV_DISPOSITION_ORIGINAL
3288	2/2 ✓ Branch 0 taken 2 times. ✓ Branch 1 taken 2 times.	4	: AV_DISPOSITION_DUB;
3289
3290	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 501 times.	501	if (key_id_base64) {
3291			/* export encryption key id as base64 metadata tag */
3292		✗	av_dict_set(&st->metadata, "enc_key_id", key_id_base64,
3293			AV_DICT_DONT_STRDUP_VAL);
3294			}
3295
3296	2/2 ✓ Branch 0 taken 335 times. ✓ Branch 1 taken 166 times.	501	if (strcmp(track->language, "und"))
3297		335	av_dict_set(&st->metadata, "language", track->language, 0);
3298		501	av_dict_set(&st->metadata, "title", track->name, 0);
3299
3300	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 501 times.	501	if (track->time_scale < 0.01) {
3301		✗	av_log(matroska->ctx, AV_LOG_WARNING,
3302			"Track TimestampScale too small %f, assuming 1.0.\n",
3303			track->time_scale);
3304		✗	track->time_scale = 1.0;
3305			}
3306
3307	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 501 times.	501	if (matroska->time_scale * track->time_scale > UINT_MAX)
3308		✗	return AVERROR_INVALIDDATA;
3309
3310		501	avpriv_set_pts_info(st, 64, matroska->time_scale * track->time_scale,
3311			1000 * 1000 * 1000); /* 64 bit pts in ns */
3312
3313			/* convert the delay from ns to the track timebase */
3314		501	track->codec_delay_in_track_tb = av_rescale_q(track->codec_delay,
3315		501	(AVRational){ 1, 1000000000 },
3316			st->time_base);
3317
3318		501	type = track->type;
3319	2/2 ✓ Branch 0 taken 8 times. ✓ Branch 1 taken 493 times.	501	if (par->codec_id == AV_CODEC_ID_WEBVTT)
3320		8	type = MATROSKA_TRACK_TYPE_SUBTITLE;
3321	3/4 ✓ Branch 0 taken 95 times. ✓ Branch 1 taken 381 times. ✓ Branch 2 taken 25 times. ✗ Branch 3 not taken.	501	switch (type) {
3322		95	case MATROSKA_TRACK_TYPE_AUDIO:
3323		95	ret = mka_parse_audio(track, st, par, matroska,
3324			s, &extradata_offset);
3325	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 95 times.	95	if (ret < 0)
3326		✗	return ret;
3327	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 95 times.	95	if (ret == SKIP_TRACK)
3328		✗	continue;
3329		95	break;
3330		381	case MATROSKA_TRACK_TYPE_VIDEO:
3331		381	ret = mkv_parse_video(track, st, par, matroska, &extradata_offset);
3332	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 381 times.	381	if (ret < 0)
3333		✗	return ret;
3334		381	break;
3335		25	case MATROSKA_TRACK_TYPE_SUBTITLE:
3336		25	ret = mkv_parse_subtitle_codec(track, st, par, matroska);
3337	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 25 times.	25	if (ret < 0)
3338		✗	return ret;
3339		25	par->codec_type = AVMEDIA_TYPE_SUBTITLE;
3340
3341	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 25 times.	25	if (track->flag_textdescriptions)
3342		✗	st->disposition |= AV_DISPOSITION_DESCRIPTIONS;
3343		25	break;
3344			}
3345
3346	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 501 times.	501	if (par->codec_id == AV_CODEC_ID_NONE)
3347		✗	av_log(matroska->ctx, AV_LOG_INFO,
3348			"Unknown/unsupported AVCodecID %s.\n", track->codec_id);
3349
3350	4/4 ✓ Branch 0 taken 494 times. ✓ Branch 1 taken 7 times. ✓ Branch 2 taken 190 times. ✓ Branch 3 taken 304 times.	501	if (!par->extradata && track->codec_priv.size > extradata_offset) {
3351		190	const uint8_t *src = track->codec_priv.data + extradata_offset;
3352		190	unsigned extra_size = track->codec_priv.size - extradata_offset;
3353		190	ret = ff_alloc_extradata(par, extra_size);
3354	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 190 times.	190	if (ret < 0)
3355		✗	return ret;
3356		190	memcpy(par->extradata, src, extra_size);
3357			}
3358
3359		501	ret = mkv_parse_block_addition_mappings(s, st, track);
3360	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 501 times.	501	if (ret < 0)
3361		✗	return ret;
3362			}
3363
3364		421	return 0;
3365			}
3366
3367		421	static int matroska_parse_dovi_streams(AVFormatContext *s)
3368			{
3369		421	AVStream *bl_st = NULL, *el_st = NULL;
3370			AVStreamGroup *stg;
3371			int err;
3372
3373			/* Matroska has no explicit cross-track Dolby Vision reference, so the
3374			* pairing is recovered from the dvcC/dvvC config records. Find a single
3375			* HEVC track whose record declares a profile 7 enhancement layer
3376			* (el_present_flag=1) and a single sibling HEVC BL candidate. If either
3377			* side is ambiguous, leave the streams ungrouped. */
3378	2/2 ✓ Branch 0 taken 360 times. ✓ Branch 1 taken 61 times.	421	if (s->nb_streams <= 1)
3379		360	return 0;
3380
3381	2/2 ✓ Branch 0 taken 153 times. ✓ Branch 1 taken 59 times.	212	for (int i = 0; i < s->nb_streams; i++) {
3382		153	AVStream *st = s->streams[i];
3383			const AVPacketSideData *sd;
3384			const AVDOVIDecoderConfigurationRecord *dovi;
3385
3386	2/2 ✓ Branch 0 taken 130 times. ✓ Branch 1 taken 23 times.	153	if (st->codecpar->codec_id != AV_CODEC_ID_HEVC)
3387		130	continue;
3388
3389		23	sd = av_packet_side_data_get(st->codecpar->coded_side_data,
3390		23	st->codecpar->nb_coded_side_data,
3391			AV_PKT_DATA_DOVI_CONF);
3392	2/2 ✓ Branch 0 taken 4 times. ✓ Branch 1 taken 19 times.	23	if (sd) {
3393		4	dovi = (const AVDOVIDecoderConfigurationRecord *)sd->data;
3394	3/4 ✓ Branch 0 taken 2 times. ✓ Branch 1 taken 2 times. ✓ Branch 2 taken 2 times. ✗ Branch 3 not taken.	4	if (dovi->dv_profile == 7 && dovi->el_present_flag) {
3395			/* bl_present_flag is not checked, because the files in the
3396			* wild set it to 1 for EL stream, while the expectation, based
3397			* on Dolby spec for MPEG-TS would be that it's set to 0.
3398			* Ignore this, if we have EL track and single other video track
3399			* it's safe to assume it's BL. */
3400	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 2 times.	2	if (el_st)
3401		✗	return 0;
3402		2	el_st = st;
3403		2	continue;
3404			}
3405			}
3406
3407	2/2 ✓ Branch 0 taken 2 times. ✓ Branch 1 taken 19 times.	21	if (bl_st)
3408		2	return 0;
3409		19	bl_st = st;
3410			}
3411
3412	3/4 ✓ Branch 0 taken 2 times. ✓ Branch 1 taken 57 times. ✗ Branch 2 not taken. ✓ Branch 3 taken 2 times.	59	if (!el_st || !bl_st)
3413		57	return 0;
3414
3415		2	stg = avformat_stream_group_create(s, AV_STREAM_GROUP_PARAMS_DOLBY_VISION, NULL);
3416	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 2 times.	2	if (!stg)
3417		✗	return AVERROR(ENOMEM);
3418
3419		2	stg->id = el_st->id;
3420
3421		2	err = avformat_stream_group_add_stream(stg, bl_st);
3422	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 2 times.	2	if (err < 0)
3423		✗	return err;
3424
3425		2	err = avformat_stream_group_add_stream(stg, el_st);
3426	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 2 times.	2	if (err < 0)
3427		✗	return err;
3428
3429		2	stg->params.layered_video->el_index = stg->nb_entries - 1;
3430		2	stg->params.layered_video->width = bl_st->codecpar->width;
3431		2	stg->params.layered_video->height = bl_st->codecpar->height;
3432
3433		2	return 0;
3434			}
3435
3436		421	static int matroska_read_header(AVFormatContext *s)
3437			{
3438		421	FFFormatContext *const si = ffformatcontext(s);
3439		421	MatroskaDemuxContext *matroska = s->priv_data;
3440		421	EbmlList *attachments_list = &matroska->attachments;
3441		421	EbmlList *chapters_list = &matroska->chapters;
3442			MatroskaAttachment *attachments;
3443			MatroskaChapter *chapters;
3444		421	uint64_t max_start = 0;
3445			int64_t pos;
3446		421	Ebml ebml = { 0 };
3447			int i, j, res;
3448
3449		421	matroska->ctx = s;
3450		421	matroska->cues_parsing_deferred = 1;
3451
3452			/* First read the EBML header. */
3453	2/4 ✓ Branch 1 taken 421 times. ✗ Branch 2 not taken. ✗ Branch 3 not taken. ✓ Branch 4 taken 421 times.	421	if (ebml_parse(matroska, ebml_syntax, &ebml) || !ebml.doctype) {
3454		✗	av_log(matroska->ctx, AV_LOG_ERROR, "EBML header parsing failed\n");
3455		✗	ebml_free(ebml_syntax, &ebml);
3456		✗	return AVERROR_INVALIDDATA;
3457			}
3458	1/2 ✓ Branch 0 taken 421 times. ✗ Branch 1 not taken.	421	if (ebml.version > EBML_VERSION ||
3459	1/2 ✓ Branch 0 taken 421 times. ✗ Branch 1 not taken.	421	ebml.max_size > sizeof(uint64_t) ||
3460	1/2 ✓ Branch 0 taken 421 times. ✗ Branch 1 not taken.	421	ebml.id_length > sizeof(uint32_t) ||
3461	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 421 times.	421	ebml.doctype_version > 3) {
3462		✗	avpriv_report_missing_feature(matroska->ctx,
3463			"EBML version %"PRIu64", doctype %s, doc version %"PRIu64,
3464			ebml.version, ebml.doctype, ebml.doctype_version);
3465		✗	ebml_free(ebml_syntax, &ebml);
3466		✗	return AVERROR_PATCHWELCOME;
3467	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 421 times.	421	} else if (ebml.doctype_version == 3) {
3468		✗	av_log(matroska->ctx, AV_LOG_WARNING,
3469			"EBML header using unsupported features\n"
3470			"(EBML version %"PRIu64", doctype %s, doc version %"PRIu64")\n",
3471			ebml.version, ebml.doctype, ebml.doctype_version);
3472			}
3473	1/2 ✓ Branch 0 taken 691 times. ✗ Branch 1 not taken.	691	for (i = 0; i < FF_ARRAY_ELEMS(matroska_doctypes); i++)
3474	2/2 ✓ Branch 0 taken 421 times. ✓ Branch 1 taken 270 times.	691	if (!strcmp(ebml.doctype, matroska_doctypes[i]))
3475		421	break;
3476	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 421 times.	421	if (i >= FF_ARRAY_ELEMS(matroska_doctypes)) {
3477		✗	av_log(s, AV_LOG_WARNING, "Unknown EBML doctype '%s'\n", ebml.doctype);
3478		✗	if (matroska->ctx->error_recognition & AV_EF_EXPLODE) {
3479		✗	ebml_free(ebml_syntax, &ebml);
3480		✗	return AVERROR_INVALIDDATA;
3481			}
3482			}
3483		421	matroska->is_webm = !strcmp(ebml.doctype, "webm");
3484
3485		421	ebml_free(ebml_syntax, &ebml);
3486
3487		421	matroska->pkt = si->parse_pkt;
3488
3489			/* The next thing is a segment. */
3490		421	pos = avio_tell(matroska->ctx->pb);
3491		421	res = ebml_parse(matroska, matroska_segments, matroska);
3492			// Try resyncing until we find an EBML_STOP type element.
3493	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 421 times.	421	while (res != 1) {
3494		✗	res = matroska_resync(matroska, pos);
3495		✗	if (res < 0)
3496		✗	return res;
3497		✗	pos = avio_tell(matroska->ctx->pb);
3498		✗	res = ebml_parse(matroska, matroska_segment, matroska);
3499		✗	if (res == AVERROR(EIO)) // EOF is translated to EIO, this exists the loop on EOF
3500		✗	return res;
3501			}
3502			/* Set data_offset as it might be needed later by seek_frame_generic. */
3503	2/2 ✓ Branch 0 taken 417 times. ✓ Branch 1 taken 4 times.	421	if (matroska->current_id == MATROSKA_ID_CLUSTER)
3504		417	si->data_offset = avio_tell(matroska->ctx->pb) - 4;
3505		421	matroska_execute_seekhead(matroska);
3506
3507	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 421 times.	421	if (!matroska->time_scale)
3508		✗	matroska->time_scale = 1000000;
3509	2/4 ✓ Branch 0 taken 421 times. ✗ Branch 1 not taken. ✓ Branch 2 taken 421 times. ✗ Branch 3 not taken.	421	if (isnan(matroska->duration) || matroska->duration < 0 ||
3510	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 421 times.	421	matroska->duration >= (double)INT64_MAX / matroska->time_scale)
3511		✗	matroska->duration = 0;
3512	2/2 ✓ Branch 0 taken 409 times. ✓ Branch 1 taken 12 times.	421	if (matroska->duration)
3513		409	matroska->ctx->duration = matroska->duration * matroska->time_scale *
3514		409	1000 / AV_TIME_BASE;
3515		421	av_dict_set(&s->metadata, "title", matroska->title, 0);
3516		421	av_dict_set(&s->metadata, "encoder", matroska->muxingapp, 0);
3517
3518	2/2 ✓ Branch 0 taken 40 times. ✓ Branch 1 taken 381 times.	421	if (matroska->date_utc.size == 8)
3519		40	matroska_metadata_creation_time(&s->metadata, AV_RB64(matroska->date_utc.data));
3520
3521		421	res = matroska_parse_tracks(s);
3522	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 421 times.	421	if (res < 0)
3523		✗	return res;
3524
3525		421	attachments = attachments_list->elem;
3526	2/2 ✓ Branch 0 taken 14 times. ✓ Branch 1 taken 421 times.	435	for (j = 0; j < attachments_list->nb_elem; j++) {
3527	2/4 ✓ Branch 0 taken 14 times. ✗ Branch 1 not taken. ✓ Branch 2 taken 14 times. ✗ Branch 3 not taken.	14	if (!(attachments[j].filename && attachments[j].mime &&
3528	2/4 ✓ Branch 0 taken 14 times. ✗ Branch 1 not taken. ✗ Branch 2 not taken. ✓ Branch 3 taken 14 times.	14	attachments[j].bin.data && attachments[j].bin.size > 0)) {
3529		✗	av_log(matroska->ctx, AV_LOG_ERROR, "incomplete attachment\n");
3530			} else {
3531		14	AVStream *st = avformat_new_stream(s, NULL);
3532	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 14 times.	14	if (!st)
3533		✗	break;
3534		14	av_dict_set(&st->metadata, "filename", attachments[j].filename, 0);
3535		14	av_dict_set(&st->metadata, "mimetype", attachments[j].mime, 0);
3536	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 14 times.	14	if (attachments[j].description)
3537		✗	av_dict_set(&st->metadata, "title", attachments[j].description, 0);
3538		14	st->codecpar->codec_id = AV_CODEC_ID_NONE;
3539
3540	2/2 ✓ Branch 0 taken 56 times. ✓ Branch 1 taken 14 times.	70	for (i = 0; mkv_image_mime_tags[i].id != AV_CODEC_ID_NONE; i++) {
3541	1/2 ✗ Branch 1 not taken. ✓ Branch 2 taken 56 times.	56	if (av_strstart(attachments[j].mime, mkv_image_mime_tags[i].str, NULL)) {
3542		✗	st->codecpar->codec_id = mkv_image_mime_tags[i].id;
3543		✗	break;
3544			}
3545			}
3546
3547		14	attachments[j].stream = st;
3548
3549	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 14 times.	14	if (st->codecpar->codec_id != AV_CODEC_ID_NONE) {
3550		✗	res = ff_add_attached_pic(s, st, NULL, &attachments[j].bin.buf, 0);
3551		✗	if (res < 0)
3552		✗	return res;
3553			} else {
3554		14	st->codecpar->codec_type = AVMEDIA_TYPE_ATTACHMENT;
3555	1/2 ✗ Branch 1 not taken. ✓ Branch 2 taken 14 times.	14	if (ff_alloc_extradata(st->codecpar, attachments[j].bin.size))
3556		✗	break;
3557		14	memcpy(st->codecpar->extradata, attachments[j].bin.data,
3558		14	attachments[j].bin.size);
3559
3560	2/2 ✓ Branch 0 taken 56 times. ✓ Branch 1 taken 14 times.	70	for (i = 0; mkv_mime_tags[i].id != AV_CODEC_ID_NONE; i++) {
3561	1/2 ✗ Branch 1 not taken. ✓ Branch 2 taken 56 times.	56	if (av_strstart(attachments[j].mime, mkv_mime_tags[i].str, NULL)) {
3562		✗	st->codecpar->codec_id = mkv_mime_tags[i].id;
3563		✗	break;
3564			}
3565			}
3566			}
3567			}
3568			}
3569
3570		421	chapters = chapters_list->elem;
3571	2/2 ✓ Branch 0 taken 34 times. ✓ Branch 1 taken 421 times.	455	for (i = 0; i < chapters_list->nb_elem; i++)
3572	4/6 ✓ Branch 0 taken 34 times. ✗ Branch 1 not taken. ✓ Branch 2 taken 34 times. ✗ Branch 3 not taken. ✓ Branch 4 taken 4 times. ✓ Branch 5 taken 30 times.	34	if (chapters[i].start != AV_NOPTS_VALUE && chapters[i].uid &&
3573	1/2 ✓ Branch 0 taken 4 times. ✗ Branch 1 not taken.	4	(max_start == 0 || chapters[i].start > max_start)) {
3574		68	chapters[i].chapter =
3575		34	avpriv_new_chapter(s, chapters[i].uid,
3576		34	(AVRational) { 1, 1000000000 },
3577		34	chapters[i].start, chapters[i].end,
3578		34	chapters[i].title);
3579		34	max_start = chapters[i].start;
3580			}
3581
3582		421	matroska_add_index_entries(matroska);
3583
3584		421	matroska_convert_tags(s);
3585
3586		421	res = matroska_parse_dovi_streams(s);
3587	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 421 times.	421	if (res < 0)
3588		✗	return res;
3589
3590		421	return 0;
3591			}
3592
3593			/*
3594			* Put one packet in an application-supplied AVPacket struct.
3595			* Returns 0 on success or -1 on failure.
3596			*/
3597		61613	static int matroska_deliver_packet(MatroskaDemuxContext *matroska,
3598			AVPacket *pkt)
3599			{
3600	2/2 ✓ Branch 0 taken 30069 times. ✓ Branch 1 taken 31544 times.	61613	if (matroska->queue.head) {
3601		30069	MatroskaTrack *tracks = matroska->tracks.elem;
3602			MatroskaTrack *track;
3603
3604		30069	ff_packet_list_get(&matroska->queue, pkt);
3605		30069	track = &tracks[pkt->stream_index];
3606	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 30069 times.	30069	if (track->has_palette) {
3607		✗	uint8_t *pal = av_packet_new_side_data(pkt, AV_PKT_DATA_PALETTE, AVPALETTE_SIZE);
3608		✗	if (!pal) {
3609		✗	av_log(matroska->ctx, AV_LOG_ERROR, "Cannot append palette to packet\n");
3610			} else {
3611		✗	memcpy(pal, track->palette, AVPALETTE_SIZE);
3612			}
3613		✗	track->has_palette = 0;
3614			}
3615		30069	return 0;
3616			}
3617
3618		31544	return -1;
3619			}
3620
3621			/*
3622			* Free all packets in our internal queue.
3623			*/
3624		1355	static void matroska_clear_queue(MatroskaDemuxContext *matroska)
3625			{
3626		1355	ff_packet_list_free(&matroska->queue);
3627		1355	}
3628
3629		30475	static int matroska_parse_laces(MatroskaDemuxContext *matroska, uint8_t **buf,
3630			int size, int type, AVIOContext *pb,
3631			uint32_t lace_size[256], int *laces)
3632			{
3633			int n;
3634		30475	uint8_t *data = *buf;
3635
3636	2/2 ✓ Branch 0 taken 30367 times. ✓ Branch 1 taken 108 times.	30475	if (!type) {
3637		30367	*laces = 1;
3638		30367	lace_size[0] = size;
3639		30367	return 0;
3640			}
3641
3642	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 108 times.	108	if (size <= 0)
3643		✗	return AVERROR_INVALIDDATA;
3644
3645		108	*laces = *data + 1;
3646		108	data += 1;
3647		108	size -= 1;
3648
3649	3/4 ✓ Branch 0 taken 7 times. ✓ Branch 1 taken 17 times. ✓ Branch 2 taken 84 times. ✗ Branch 3 not taken.	108	switch (type) {
3650		7	case 0x1: /* Xiph lacing */
3651			{
3652			uint8_t temp;
3653		7	uint32_t total = 0;
3654	2/2 ✓ Branch 0 taken 42 times. ✓ Branch 1 taken 7 times.	49	for (n = 0; n < *laces - 1; n++) {
3655		42	lace_size[n] = 0;
3656
3657			do {
3658	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 47 times.	47	if (size <= total)
3659		✗	return AVERROR_INVALIDDATA;
3660		47	temp = *data;
3661		47	total += temp;
3662		47	lace_size[n] += temp;
3663		47	data += 1;
3664		47	size -= 1;
3665	2/2 ✓ Branch 0 taken 5 times. ✓ Branch 1 taken 42 times.	47	} while (temp == 0xff);
3666			}
3667	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 7 times.	7	if (size < total)
3668		✗	return AVERROR_INVALIDDATA;
3669
3670		7	lace_size[n] = size - total;
3671		7	break;
3672			}
3673
3674		17	case 0x2: /* fixed-size lacing */
3675	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 17 times.	17	if (size % (*laces))
3676		✗	return AVERROR_INVALIDDATA;
3677	2/2 ✓ Branch 0 taken 81 times. ✓ Branch 1 taken 17 times.	98	for (n = 0; n < *laces; n++)
3678		81	lace_size[n] = size / *laces;
3679		17	break;
3680
3681		84	case 0x3: /* EBML lacing */
3682			{
3683			uint64_t num;
3684			uint64_t total;
3685			int offset;
3686
3687		84	avio_skip(pb, 4);
3688
3689		84	n = ebml_read_num(matroska, pb, 8, &num, 1);
3690	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 84 times.	84	if (n < 0)
3691		✗	return n;
3692	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 84 times.	84	if (num > INT_MAX)
3693		✗	return AVERROR_INVALIDDATA;
3694
3695		84	total = lace_size[0] = num;
3696		84	offset = n;
3697	2/2 ✓ Branch 0 taken 414 times. ✓ Branch 1 taken 84 times.	498	for (n = 1; n < *laces - 1; n++) {
3698			int64_t snum;
3699			int r;
3700		414	r = matroska_ebmlnum_sint(matroska, pb, &snum);
3701	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 414 times.	414	if (r < 0)
3702		✗	return r;
3703	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 414 times.	414	if (lace_size[n - 1] + snum > (uint64_t)INT_MAX)
3704		✗	return AVERROR_INVALIDDATA;
3705
3706		414	lace_size[n] = lace_size[n - 1] + snum;
3707		414	total += lace_size[n];
3708		414	offset += r;
3709			}
3710		84	data += offset;
3711		84	size -= offset;
3712	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 84 times.	84	if (size < total)
3713		✗	return AVERROR_INVALIDDATA;
3714
3715		84	lace_size[*laces - 1] = size - total;
3716		84	break;
3717			}
3718			}
3719
3720		108	*buf = data;
3721
3722		108	return 0;
3723			}
3724
3725		✗	static int matroska_parse_rm_audio(MatroskaDemuxContext *matroska,
3726			MatroskaTrack *track, AVStream *st,
3727			uint8_t *data, int size, uint64_t timecode,
3728			int64_t pos)
3729			{
3730		✗	const int a = st->codecpar->block_align;
3731		✗	const int sps = track->audio.sub_packet_size;
3732		✗	const int cfs = track->audio.coded_framesize;
3733		✗	const int h = track->audio.sub_packet_h;
3734		✗	const int w = track->audio.frame_size;
3735		✗	int y = track->audio.sub_packet_cnt;
3736			int x;
3737
3738		✗	if (!track->audio.pkt_cnt) {
3739		✗	if (track->audio.sub_packet_cnt == 0)
3740		✗	track->audio.buf_timecode = timecode;
3741		✗	if (st->codecpar->codec_id == AV_CODEC_ID_RA_288) {
3742		✗	if (size < cfs * h / 2) {
3743		✗	av_log(matroska->ctx, AV_LOG_ERROR,
3744			"Corrupt int4 RM-style audio packet size\n");
3745		✗	return AVERROR_INVALIDDATA;
3746			}
3747		✗	for (x = 0; x < h / 2; x++)
3748		✗	memcpy(track->audio.buf + x * 2 * w + y * cfs,
3749		✗	data + x * cfs, cfs);
3750		✗	} else if (st->codecpar->codec_id == AV_CODEC_ID_SIPR) {
3751		✗	if (size < w) {
3752		✗	av_log(matroska->ctx, AV_LOG_ERROR,
3753			"Corrupt sipr RM-style audio packet size\n");
3754		✗	return AVERROR_INVALIDDATA;
3755			}
3756		✗	memcpy(track->audio.buf + y * w, data, w);
3757			} else {
3758		✗	if (size < w) {
3759		✗	av_log(matroska->ctx, AV_LOG_ERROR,
3760			"Corrupt generic RM-style audio packet size\n");
3761		✗	return AVERROR_INVALIDDATA;
3762			}
3763		✗	for (x = 0; x < w / sps; x++)
3764		✗	memcpy(track->audio.buf +
3765		✗	sps * (h * x + ((h + 1) / 2) * (y & 1) + (y >> 1)),
3766		✗	data + x * sps, sps);
3767			}
3768
3769		✗	if (++track->audio.sub_packet_cnt >= h) {
3770		✗	if (st->codecpar->codec_id == AV_CODEC_ID_SIPR)
3771		✗	ff_rm_reorder_sipr_data(track->audio.buf, h, w);
3772		✗	track->audio.sub_packet_cnt = 0;
3773		✗	track->audio.pkt_cnt = h * w / a;
3774			}
3775			}
3776
3777		✗	while (track->audio.pkt_cnt) {
3778			int ret;
3779		✗	AVPacket *pkt = matroska->pkt;
3780
3781		✗	ret = av_new_packet(pkt, a);
3782		✗	if (ret < 0) {
3783		✗	return ret;
3784			}
3785		✗	memcpy(pkt->data,
3786		✗	track->audio.buf + a * (h * w / a - track->audio.pkt_cnt--),
3787			a);
3788		✗	pkt->pts = track->audio.buf_timecode;
3789		✗	track->audio.buf_timecode = AV_NOPTS_VALUE;
3790		✗	pkt->pos = pos;
3791		✗	pkt->stream_index = st->index;
3792		✗	ret = ff_packet_list_put(&matroska->queue, pkt, NULL, 0);
3793		✗	if (ret < 0) {
3794		✗	av_packet_unref(pkt);
3795		✗	return AVERROR(ENOMEM);
3796			}
3797			}
3798
3799		✗	return 0;
3800			}
3801
3802			/* reconstruct full wavpack blocks from mangled matroska ones */
3803		24	static int matroska_parse_wavpack(MatroskaTrack *track,
3804			uint8_t **data, int *size)
3805			{
3806		24	uint8_t *dst = NULL;
3807		24	uint8_t *src = *data;
3808		24	int dstlen = 0;
3809		24	int srclen = *size;
3810			uint32_t samples;
3811			uint16_t ver;
3812		24	int ret, offset = 0;
3813
3814	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 24 times.	24	if (srclen < 12)
3815		✗	return AVERROR_INVALIDDATA;
3816
3817			av_assert1(track->stream->codecpar->extradata_size >= 2);
3818		24	ver = AV_RL16(track->stream->codecpar->extradata);
3819
3820		24	samples = AV_RL32(src);
3821		24	src += 4;
3822		24	srclen -= 4;
3823
3824	2/2 ✓ Branch 0 taken 112 times. ✓ Branch 1 taken 24 times.	136	while (srclen >= 8) {
3825			int multiblock;
3826			uint32_t blocksize;
3827			uint8_t *tmp;
3828
3829		112	uint32_t flags = AV_RL32(src);
3830		112	uint32_t crc = AV_RL32(src + 4);
3831		112	src += 8;
3832		112	srclen -= 8;
3833
3834		112	multiblock = (flags & 0x1800) != 0x1800;
3835	2/2 ✓ Branch 0 taken 110 times. ✓ Branch 1 taken 2 times.	112	if (multiblock) {
3836	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 110 times.	110	if (srclen < 4) {
3837		✗	ret = AVERROR_INVALIDDATA;
3838		✗	goto fail;
3839			}
3840		110	blocksize = AV_RL32(src);
3841		110	src += 4;
3842		110	srclen -= 4;
3843			} else
3844		2	blocksize = srclen;
3845
3846	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 112 times.	112	if (blocksize > srclen) {
3847		✗	ret = AVERROR_INVALIDDATA;
3848		✗	goto fail;
3849			}
3850
3851		112	tmp = av_realloc(dst, dstlen + blocksize + 32 + AV_INPUT_BUFFER_PADDING_SIZE);
3852	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 112 times.	112	if (!tmp) {
3853		✗	ret = AVERROR(ENOMEM);
3854		✗	goto fail;
3855			}
3856		112	dst = tmp;
3857		112	dstlen += blocksize + 32;
3858
3859		112	AV_WL32(dst + offset, MKTAG('w', 'v', 'p', 'k')); // tag
3860		112	AV_WL32(dst + offset + 4, blocksize + 24); // blocksize - 8
3861		112	AV_WL16(dst + offset + 8, ver); // version
3862		112	AV_WL16(dst + offset + 10, 0); // track/index_no
3863		112	AV_WL32(dst + offset + 12, 0); // total samples
3864		112	AV_WL32(dst + offset + 16, 0); // block index
3865		112	AV_WL32(dst + offset + 20, samples); // number of samples
3866		112	AV_WL32(dst + offset + 24, flags); // flags
3867		112	AV_WL32(dst + offset + 28, crc); // crc
3868		112	memcpy(dst + offset + 32, src, blocksize); // block data
3869
3870		112	src += blocksize;
3871		112	srclen -= blocksize;
3872		112	offset += blocksize + 32;
3873			}
3874
3875		24	memset(dst + dstlen, 0, AV_INPUT_BUFFER_PADDING_SIZE);
3876
3877		24	*data = dst;
3878		24	*size = dstlen;
3879
3880		24	return 0;
3881
3882		✗	fail:
3883		✗	av_freep(&dst);
3884		✗	return ret;
3885			}
3886
3887		11	static int matroska_parse_prores(MatroskaTrack *track,
3888			uint8_t **data, int *size)
3889			{
3890			uint8_t *dst;
3891		11	int dstlen = *size + 8;
3892
3893		11	dst = av_malloc(dstlen + AV_INPUT_BUFFER_PADDING_SIZE);
3894	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 11 times.	11	if (!dst)
3895		✗	return AVERROR(ENOMEM);
3896
3897		11	AV_WB32(dst, dstlen);
3898		11	AV_WB32(dst + 4, MKBETAG('i', 'c', 'p', 'f'));
3899		11	memcpy(dst + 8, *data, dstlen - 8);
3900		11	memset(dst + dstlen, 0, AV_INPUT_BUFFER_PADDING_SIZE);
3901
3902		11	*data = dst;
3903		11	*size = dstlen;
3904
3905		11	return 0;
3906			}
3907
3908		90	static int matroska_parse_webvtt(MatroskaDemuxContext *matroska,
3909			MatroskaTrack *track,
3910			AVStream *st,
3911			uint8_t *data, int data_len,
3912			uint64_t timecode,
3913			uint64_t duration,
3914			int64_t pos)
3915			{
3916		90	AVPacket *pkt = matroska->pkt;
3917			uint8_t *id, *settings, *text, *buf;
3918			int id_len, settings_len, text_len;
3919			uint8_t *p, *q;
3920			int err;
3921
3922	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 90 times.	90	if (data_len <= 0)
3923		✗	return AVERROR_INVALIDDATA;
3924
3925		90	p = data;
3926		90	q = data + data_len;
3927
3928		90	id = p;
3929		90	id_len = -1;
3930	1/2 ✓ Branch 0 taken 192 times. ✗ Branch 1 not taken.	192	while (p < q) {
3931	3/4 ✓ Branch 0 taken 192 times. ✗ Branch 1 not taken. ✓ Branch 2 taken 90 times. ✓ Branch 3 taken 102 times.	192	if (*p == '\r' || *p == '\n') {
3932		90	id_len = p - id;
3933	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 90 times.	90	if (*p == '\r')
3934		✗	p++;
3935		90	break;
3936			}
3937		102	p++;
3938			}
3939
3940	2/4 ✓ Branch 0 taken 90 times. ✗ Branch 1 not taken. ✗ Branch 2 not taken. ✓ Branch 3 taken 90 times.	90	if (p >= q || *p != '\n')
3941		✗	return AVERROR_INVALIDDATA;
3942		90	p++;
3943
3944		90	settings = p;
3945		90	settings_len = -1;
3946	1/2 ✓ Branch 0 taken 546 times. ✗ Branch 1 not taken.	546	while (p < q) {
3947	3/4 ✓ Branch 0 taken 546 times. ✗ Branch 1 not taken. ✓ Branch 2 taken 90 times. ✓ Branch 3 taken 456 times.	546	if (*p == '\r' || *p == '\n') {
3948		90	settings_len = p - settings;
3949	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 90 times.	90	if (*p == '\r')
3950		✗	p++;
3951		90	break;
3952			}
3953		456	p++;
3954			}
3955
3956	2/4 ✓ Branch 0 taken 90 times. ✗ Branch 1 not taken. ✗ Branch 2 not taken. ✓ Branch 3 taken 90 times.	90	if (p >= q || *p != '\n')
3957		✗	return AVERROR_INVALIDDATA;
3958		90	p++;
3959
3960		90	text = p;
3961		90	text_len = q - p;
3962	1/2 ✓ Branch 0 taken 90 times. ✗ Branch 1 not taken.	90	while (text_len > 0) {
3963		90	const int len = text_len - 1;
3964		90	const uint8_t c = p[len];
3965	2/4 ✓ Branch 0 taken 90 times. ✗ Branch 1 not taken. ✓ Branch 2 taken 90 times. ✗ Branch 3 not taken.	90	if (c != '\r' && c != '\n')
3966		90	break;
3967		✗	text_len = len;
3968			}
3969
3970		90	err = av_new_packet(pkt, text_len);
3971	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 90 times.	90	if (err < 0) {
3972		✗	return err;
3973			}
3974
3975		90	memcpy(pkt->data, text, text_len);
3976
3977	2/2 ✓ Branch 0 taken 12 times. ✓ Branch 1 taken 78 times.	90	if (id_len > 0) {
3978		12	buf = av_packet_new_side_data(pkt,
3979			AV_PKT_DATA_WEBVTT_IDENTIFIER,
3980			id_len);
3981	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 12 times.	12	if (!buf) {
3982		✗	av_packet_unref(pkt);
3983		✗	return AVERROR(ENOMEM);
3984			}
3985		12	memcpy(buf, id, id_len);
3986			}
3987
3988	2/2 ✓ Branch 0 taken 24 times. ✓ Branch 1 taken 66 times.	90	if (settings_len > 0) {
3989		24	buf = av_packet_new_side_data(pkt,
3990			AV_PKT_DATA_WEBVTT_SETTINGS,
3991			settings_len);
3992	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 24 times.	24	if (!buf) {
3993		✗	av_packet_unref(pkt);
3994		✗	return AVERROR(ENOMEM);
3995			}
3996		24	memcpy(buf, settings, settings_len);
3997			}
3998
3999			// Do we need this for subtitles?
4000			// pkt->flags = AV_PKT_FLAG_KEY;
4001
4002		90	pkt->stream_index = st->index;
4003		90	pkt->pts = timecode;
4004
4005			// Do we need this for subtitles?
4006			// pkt->dts = timecode;
4007
4008		90	pkt->duration = duration;
4009		90	pkt->pos = pos;
4010
4011		90	err = ff_packet_list_put(&matroska->queue, pkt, NULL, 0);
4012	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 90 times.	90	if (err < 0) {
4013		✗	av_packet_unref(pkt);
4014		✗	return AVERROR(ENOMEM);
4015			}
4016
4017		90	return 0;
4018			}
4019
4020		226	static int matroska_parse_block_additional(MatroskaDemuxContext *matroska,
4021			MatroskaTrack *track, AVPacket *pkt,
4022			const uint8_t *data, int size, uint64_t id)
4023			{
4024		226	const EbmlList *mappings_list = &track->block_addition_mappings;
4025		226	MatroskaBlockAdditionMapping *mappings = mappings_list->elem, *mapping = NULL;
4026			uint8_t *side_data;
4027			int res;
4028
4029	4/6 ✓ Branch 0 taken 72 times. ✓ Branch 1 taken 154 times. ✓ Branch 2 taken 72 times. ✗ Branch 3 not taken. ✗ Branch 4 not taken. ✓ Branch 5 taken 72 times.	226	if (!matroska->is_webm && track->max_block_additional_id && id > track->max_block_additional_id) {
4030		✗	int strict = matroska->ctx->strict_std_compliance >= FF_COMPLIANCE_STRICT;
4031		✗	av_log(matroska->ctx, strict ? AV_LOG_ERROR : AV_LOG_WARNING,
4032			"BlockAddID %"PRIu64" is higher than the reported MaxBlockAdditionID %"PRIu64" "
4033			"for Track with TrackNumber %"PRIu64"\n", id, track->max_block_additional_id,
4034			track->num);
4035		✗	if (strict)
4036		✗	return AVERROR_INVALIDDATA;
4037			}
4038
4039	2/2 ✓ Branch 0 taken 94 times. ✓ Branch 1 taken 132 times.	226	for (int i = 0; i < mappings_list->nb_elem; i++) {
4040	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 94 times.	94	if (id != mappings[i].value)
4041		✗	continue;
4042		94	mapping = &mappings[i];
4043		94	break;
4044			}
4045
4046	5/6 ✓ Branch 0 taken 96 times. ✓ Branch 1 taken 130 times. ✓ Branch 2 taken 62 times. ✓ Branch 3 taken 34 times. ✗ Branch 4 not taken. ✓ Branch 5 taken 62 times.	226	if (id != 1 && !matroska->is_webm && !mapping) {
4047		✗	av_log(matroska->ctx, AV_LOG_WARNING, "BlockAddID %"PRIu64" has no mapping. Skipping\n", id);
4048		✗	return 0;
4049			}
4050
4051	3/4 ✓ Branch 0 taken 94 times. ✓ Branch 1 taken 132 times. ✓ Branch 2 taken 94 times. ✗ Branch 3 not taken.	226	if (mapping && mapping->type)
4052		94	id = mapping->type;
4053
4054	2/2 ✓ Branch 0 taken 96 times. ✓ Branch 1 taken 130 times.	226	switch (id) {
4055		96	case MATROSKA_BLOCK_ADD_ID_TYPE_ITU_T_T35: {
4056			GetByteContext bc;
4057			int country_code, provider_code;
4058			int provider_oriented_code, application_identifier;
4059			size_t hdrplus_size;
4060			AVDynamicHDRPlus *hdrplus;
4061
4062	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 96 times.	96	if (size < 6)
4063		6	break; //ignore
4064
4065		96	bytestream2_init(&bc, data, size);
4066
4067			/* ITU-T T.35 metadata */
4068		96	country_code = bytestream2_get_byteu(&bc);
4069	2/3 ✓ Branch 0 taken 6 times. ✓ Branch 1 taken 90 times. ✗ Branch 2 not taken.	96	switch (country_code) {
4070		6	case ITU_T_T35_COUNTRY_CODE_US:
4071		6	provider_code = bytestream2_get_be16u(&bc);
4072
4073	1/3 ✓ Branch 0 taken 6 times. ✗ Branch 1 not taken. ✗ Branch 2 not taken.	6	switch (provider_code) {
4074		6	case ITU_T_T35_PROVIDER_CODE_SAMSUNG: {
4075		6	provider_oriented_code = bytestream2_get_be16u(&bc);
4076		6	application_identifier = bytestream2_get_byteu(&bc);
4077
4078	2/4 ✓ Branch 0 taken 6 times. ✗ Branch 1 not taken. ✓ Branch 2 taken 6 times. ✗ Branch 3 not taken.	6	if (provider_oriented_code != 1 || application_identifier != 4)
4079			break; // ignore
4080
4081		6	hdrplus = av_dynamic_hdr_plus_alloc(&hdrplus_size);
4082	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 6 times.	6	if (!hdrplus)
4083		90	return AVERROR(ENOMEM);
4084
4085	1/2 ✓ Branch 1 taken 6 times. ✗ Branch 2 not taken.	6	if ((res = av_dynamic_hdr_plus_from_t35(hdrplus, bc.buffer,
4086	1/2 ✗ Branch 1 not taken. ✓ Branch 2 taken 6 times.	12	bytestream2_get_bytes_left(&bc))) < 0 ||
4087		6	(res = av_packet_add_side_data(pkt, AV_PKT_DATA_DYNAMIC_HDR10_PLUS,
4088			(uint8_t *)hdrplus, hdrplus_size)) < 0) {
4089		✗	av_free(hdrplus);
4090		✗	return res;
4091			}
4092
4093		6	break;
4094			}
4095		✗	case ITU_T_T35_PROVIDER_CODE_SMPTE: {
4096			AVDynamicHDRSmpte2094App5 *hdr_smpte_2094_app5;
4097			size_t hdr_smpte_2094_app5_size;
4098
4099		✗	provider_oriented_code = bytestream2_get_be16u(&bc);
4100		✗	if (provider_oriented_code != 1)
4101		✗	break; // ignore
4102
4103		✗	hdr_smpte_2094_app5 = av_dynamic_hdr_smpte2094_app5_alloc(&hdr_smpte_2094_app5_size);
4104		✗	if (!hdr_smpte_2094_app5)
4105		✗	return AVERROR(ENOMEM);
4106
4107		✗	if ((res = av_dynamic_hdr_smpte2094_app5_from_t35(hdr_smpte_2094_app5,
4108			bc.buffer,
4109		✗	bytestream2_get_bytes_left(&bc))) < 0 ||
4110		✗	(res = av_packet_add_side_data(pkt,
4111			AV_PKT_DATA_DYNAMIC_HDR_SMPTE_2094_APP5,
4112			(uint8_t *)hdr_smpte_2094_app5,
4113			hdr_smpte_2094_app5_size)) < 0) {
4114		✗	av_free(hdr_smpte_2094_app5);
4115		✗	return res;
4116			}
4117
4118		✗	break;
4119			}
4120		✗	default:
4121		✗	break;
4122			}
4123		6	break;
4124		90	case ITU_T_T35_COUNTRY_CODE_UK:
4125		90	bytestream2_skipu(&bc, 1); // t35_uk_country_code_second_octet
4126	1/2 ✗ Branch 1 not taken. ✓ Branch 2 taken 90 times.	90	if (bytestream2_get_bytes_left(&bc) < 2)
4127		✗	return AVERROR_INVALIDDATA;
4128
4129		90	provider_code = bytestream2_get_be16u(&bc);
4130
4131	1/2 ✓ Branch 0 taken 90 times. ✗ Branch 1 not taken.	90	switch (provider_code) {
4132		90	case ITU_T_T35_PROVIDER_CODE_VNOVA: {
4133			uint8_t *data;
4134		90	int left = bytestream2_get_bytes_left(&bc);
4135
4136	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 90 times.	90	if (left < 2)
4137		✗	return AVERROR_INVALIDDATA;
4138		90	data = av_packet_new_side_data(pkt, AV_PKT_DATA_LCEVC, left);
4139	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 90 times.	90	if (!data)
4140		✗	return AVERROR(ENOMEM);
4141
4142		90	bytestream2_get_bufferu(&bc, data, left);
4143
4144		90	return 0;
4145			}
4146		✗	default:
4147		✗	break;
4148			}
4149		✗	break;
4150		✗	default:
4151		✗	break;
4152			}
4153		6	break;
4154			}
4155		130	default:
4156		130	side_data = av_packet_new_side_data(pkt, AV_PKT_DATA_MATROSKA_BLOCKADDITIONAL,
4157			size + (size_t)8);
4158	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 130 times.	130	if (!side_data)
4159		✗	return AVERROR(ENOMEM);
4160
4161		130	AV_WB64(side_data, id);
4162		130	memcpy(side_data + 8, data, size);
4163		130	break;
4164			}
4165
4166		136	return 0;
4167			}
4168
4169		30989	static int matroska_parse_frame(MatroskaDemuxContext *matroska,
4170			MatroskaTrack *track, AVStream *st,
4171			AVBufferRef *buf, uint8_t *data, int pkt_size,
4172			uint64_t timecode, uint64_t lace_duration,
4173			int64_t pos, int is_keyframe,
4174			MatroskaBlockMore *blockmore, int nb_blockmore,
4175			int64_t discard_padding)
4176			{
4177		30989	uint8_t *pkt_data = data;
4178		30989	int res = 0;
4179		30989	AVPacket *pkt = matroska->pkt;
4180
4181	2/2 ✓ Branch 0 taken 24 times. ✓ Branch 1 taken 30965 times.	30989	if (st->codecpar->codec_id == AV_CODEC_ID_WAVPACK) {
4182		24	res = matroska_parse_wavpack(track, &pkt_data, &pkt_size);
4183	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 24 times.	24	if (res < 0) {
4184		✗	av_log(matroska->ctx, AV_LOG_ERROR,
4185			"Error parsing a wavpack block.\n");
4186		✗	goto fail;
4187			}
4188	2/2 ✓ Branch 0 taken 2 times. ✓ Branch 1 taken 22 times.	24	if (!buf)
4189		2	av_freep(&data);
4190		24	buf = NULL;
4191			}
4192
4193	2/2 ✓ Branch 0 taken 13 times. ✓ Branch 1 taken 30976 times.	30989	if (st->codecpar->codec_id == AV_CODEC_ID_PRORES &&
4194	2/2 ✓ Branch 0 taken 11 times. ✓ Branch 1 taken 2 times.	13	AV_RB32(pkt_data + 4) != MKBETAG('i', 'c', 'p', 'f')) {
4195		11	res = matroska_parse_prores(track, &pkt_data, &pkt_size);
4196	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 11 times.	11	if (res < 0) {
4197		✗	av_log(matroska->ctx, AV_LOG_ERROR,
4198			"Error parsing a prores block.\n");
4199		✗	goto fail;
4200			}
4201	2/2 ✓ Branch 0 taken 2 times. ✓ Branch 1 taken 9 times.	11	if (!buf)
4202		2	av_freep(&data);
4203		11	buf = NULL;
4204			}
4205
4206	3/4 ✓ Branch 0 taken 148 times. ✓ Branch 1 taken 30841 times. ✓ Branch 2 taken 148 times. ✗ Branch 3 not taken.	30989	if (!pkt_size && !nb_blockmore)
4207		148	goto no_output;
4208
4209	5/6 ✓ Branch 0 taken 27580 times. ✓ Branch 1 taken 3261 times. ✓ Branch 2 taken 72 times. ✓ Branch 3 taken 27508 times. ✗ Branch 4 not taken. ✓ Branch 5 taken 72 times.	30841	if (!matroska->is_webm && nb_blockmore && !track->max_block_additional_id) {
4210		✗	int strict = matroska->ctx->strict_std_compliance >= FF_COMPLIANCE_STRICT;
4211		✗	av_log(matroska->ctx, strict ? AV_LOG_ERROR : AV_LOG_WARNING,
4212			"Unexpected BlockAdditions found in a Block from Track with TrackNumber %"PRIu64" "
4213			"where MaxBlockAdditionID is 0\n", track->num);
4214		✗	if (strict) {
4215		✗	res = AVERROR_INVALIDDATA;
4216		✗	goto fail;
4217			}
4218			}
4219
4220	2/2 ✓ Branch 0 taken 112 times. ✓ Branch 1 taken 30729 times.	30841	if (!buf)
4221		112	pkt->buf = av_buffer_create(pkt_data, pkt_size + AV_INPUT_BUFFER_PADDING_SIZE,
4222			NULL, NULL, 0);
4223			else
4224		30729	pkt->buf = av_buffer_ref(buf);
4225
4226	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 30841 times.	30841	if (!pkt->buf) {
4227		✗	res = AVERROR(ENOMEM);
4228		✗	goto fail;
4229			}
4230
4231		30841	pkt->data = pkt_data;
4232		30841	pkt->size = pkt_size;
4233		30841	pkt->flags = is_keyframe;
4234		30841	pkt->stream_index = st->index;
4235
4236	2/2 ✓ Branch 0 taken 226 times. ✓ Branch 1 taken 30841 times.	31067	for (int i = 0; i < nb_blockmore; i++) {
4237		226	MatroskaBlockMore *more = &blockmore[i];
4238
4239	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 226 times.	226	if (!more->additional.size)
4240		✗	continue;
4241
4242		226	res = matroska_parse_block_additional(matroska, track, pkt, more->additional.data,
4243			more->additional.size, more->additional_id);
4244	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 226 times.	226	if (res < 0) {
4245		✗	av_packet_unref(pkt);
4246		✗	return res;
4247			}
4248			}
4249
4250	2/2 ✓ Branch 0 taken 56 times. ✓ Branch 1 taken 30785 times.	30841	if (discard_padding) {
4251		56	uint8_t *side_data = av_packet_new_side_data(pkt,
4252			AV_PKT_DATA_SKIP_SAMPLES,
4253			10);
4254	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 56 times.	56	if (!side_data) {
4255		✗	av_packet_unref(pkt);
4256		✗	return AVERROR(ENOMEM);
4257			}
4258		56	discard_padding = av_rescale_q(discard_padding,
4259		56	(AVRational){1, 1000000000},
4260		56	(AVRational){1, st->codecpar->sample_rate});
4261	1/2 ✓ Branch 0 taken 56 times. ✗ Branch 1 not taken.	56	if (discard_padding > 0) {
4262		56	AV_WL32A(side_data + 4, discard_padding);
4263			} else {
4264		✗	AV_WL32A(side_data, -discard_padding);
4265			}
4266			}
4267
4268	2/2 ✓ Branch 0 taken 429 times. ✓ Branch 1 taken 30412 times.	30841	if (track->ms_compat)
4269		429	pkt->dts = timecode;
4270			else
4271		30412	pkt->pts = timecode;
4272		30841	pkt->pos = pos;
4273		30841	pkt->duration = lace_duration;
4274
4275		30841	res = ff_packet_list_put(&matroska->queue, pkt, NULL, 0);
4276	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 30841 times.	30841	if (res < 0) {
4277		✗	av_packet_unref(pkt);
4278		✗	return AVERROR(ENOMEM);
4279			}
4280
4281		30841	return 0;
4282
4283		148	no_output:
4284		148	fail:
4285	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 148 times.	148	if (!buf)
4286		✗	av_free(pkt_data);
4287		148	return res;
4288			}
4289
4290		31487	static int matroska_parse_block(MatroskaDemuxContext *matroska, AVBufferRef *buf, uint8_t *data,
4291			int size, int64_t pos, uint64_t cluster_time,
4292			uint64_t block_duration, int is_keyframe,
4293			MatroskaBlockMore *blockmore, int nb_blockmore,
4294			int64_t cluster_pos, int64_t discard_padding)
4295			{
4296		31487	uint64_t timecode = AV_NOPTS_VALUE;
4297			MatroskaTrack *track;
4298			FFIOContext pb;
4299		31487	int res = 0;
4300			AVStream *st;
4301			int16_t block_time;
4302			uint32_t lace_size[256];
4303		31487	int n, flags, laces = 0;
4304			uint64_t num;
4305			int trust_default_duration;
4306
4307			av_assert1(buf);
4308
4309		31487	ffio_init_read_context(&pb, data, size);
4310
4311	1/2 ✗ Branch 1 not taken. ✓ Branch 2 taken 31487 times.	31487	if ((n = ebml_read_num(matroska, &pb.pub, 8, &num, 1)) < 0)
4312		✗	return n;
4313		31487	data += n;
4314		31487	size -= n;
4315
4316		31487	track = matroska_find_track_by_num(matroska, num);
4317	3/4 ✓ Branch 0 taken 31486 times. ✓ Branch 1 taken 1 times. ✗ Branch 2 not taken. ✓ Branch 3 taken 31486 times.	31487	if (!track || size < 3)
4318		1	return AVERROR_INVALIDDATA;
4319
4320	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 31486 times.	31486	if (!(st = track->stream)) {
4321		✗	av_log(matroska->ctx, AV_LOG_VERBOSE,
4322			"No stream associated to TrackNumber %"PRIu64". "
4323			"Ignoring Block with this TrackNumber.\n", num);
4324		✗	return 0;
4325			}
4326
4327	2/2 ✓ Branch 0 taken 355 times. ✓ Branch 1 taken 31131 times.	31486	if (st->discard >= AVDISCARD_ALL)
4328		355	return res;
4329	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 31131 times.	31131	if (block_duration > INT64_MAX)
4330		✗	block_duration = INT64_MAX;
4331
4332		31131	block_time = sign_extend(AV_RB16(data), 16);
4333		31131	data += 2;
4334		31131	flags = *data++;
4335		31131	size -= 3;
4336	2/2 ✓ Branch 0 taken 30593 times. ✓ Branch 1 taken 538 times.	31131	if (is_keyframe == -1)
4337		30593	is_keyframe = flags & 0x80 ? AV_PKT_FLAG_KEY : 0;
4338
4339	3/4 ✓ Branch 0 taken 31131 times. ✗ Branch 1 not taken. ✓ Branch 2 taken 79 times. ✓ Branch 3 taken 31052 times.	31131	if (cluster_time != (uint64_t) -1 &&
4340	2/2 ✓ Branch 0 taken 63 times. ✓ Branch 1 taken 16 times.	79	(block_time >= 0 || cluster_time >= -block_time)) {
4341		31115	uint64_t timecode_cluster_in_track_tb = (double) cluster_time / track->time_scale;
4342		31115	timecode = timecode_cluster_in_track_tb + block_time - track->codec_delay_in_track_tb;
4343	2/2 ✓ Branch 0 taken 133 times. ✓ Branch 1 taken 30982 times.	31115	if (track->type == MATROSKA_TRACK_TYPE_SUBTITLE &&
4344	2/2 ✓ Branch 0 taken 6 times. ✓ Branch 1 taken 127 times.	133	timecode < track->end_timecode)
4345		6	is_keyframe = 0; /* overlapping subtitles are not key frame */
4346	2/2 ✓ Branch 0 taken 27152 times. ✓ Branch 1 taken 3963 times.	31115	if (is_keyframe) {
4347		27152	ff_reduce_index(matroska->ctx, st->index);
4348		27152	av_add_index_entry(st, cluster_pos, timecode, 0, 0,
4349			AVINDEX_KEYFRAME);
4350			}
4351			}
4352
4353	2/2 ✓ Branch 0 taken 708 times. ✓ Branch 1 taken 30423 times.	31131	if (matroska->skip_to_keyframe &&
4354	1/2 ✓ Branch 0 taken 708 times. ✗ Branch 1 not taken.	708	track->type != MATROSKA_TRACK_TYPE_SUBTITLE) {
4355			// Compare signed timecodes. Timecode may be negative due to codec delay
4356			// offset. We don't support timestamps greater than int64_t anyway - see
4357			// AVPacket's pts.
4358	2/2 ✓ Branch 0 taken 656 times. ✓ Branch 1 taken 52 times.	708	if ((int64_t)timecode < (int64_t)matroska->skip_to_timecode)
4359		656	return res;
4360	1/2 ✓ Branch 0 taken 52 times. ✗ Branch 1 not taken.	52	if (is_keyframe)
4361		52	matroska->skip_to_keyframe = 0;
4362		✗	else if (!ffstream(st)->skip_to_keyframe) {
4363		✗	av_log(matroska->ctx, AV_LOG_ERROR, "File is broken, keyframes not correctly marked!\n");
4364		✗	matroska->skip_to_keyframe = 0;
4365			}
4366			}
4367
4368		30475	res = matroska_parse_laces(matroska, &data, size, (flags & 0x06) >> 1,
4369			&pb.pub, lace_size, &laces);
4370	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 30475 times.	30475	if (res < 0) {
4371		✗	av_log(matroska->ctx, AV_LOG_ERROR, "Error parsing frame sizes.\n");
4372		✗	return res;
4373			}
4374
4375		30475	trust_default_duration = track->default_duration != 0;
4376	1/4 ✗ Branch 0 not taken. ✓ Branch 1 taken 30475 times. ✗ Branch 2 not taken. ✗ Branch 3 not taken.	30475	if (track->audio.samplerate == 8000 && trust_default_duration) {
4377			// If this is needed for more codecs, then add them here
4378		✗	if (st->codecpar->codec_id == AV_CODEC_ID_AC3) {
4379		✗	if (track->audio.samplerate != st->codecpar->sample_rate || !st->codecpar->frame_size)
4380		✗	trust_default_duration = 0;
4381			}
4382			}
4383
4384	4/4 ✓ Branch 0 taken 30192 times. ✓ Branch 1 taken 283 times. ✓ Branch 2 taken 4878 times. ✓ Branch 3 taken 25314 times.	30475	if (!block_duration && trust_default_duration)
4385		4878	block_duration = av_rescale_q(track->default_duration * laces,
4386		4878	(AVRational) { 1, 1000000000 },
4387			st->time_base);
4388
4389	5/6 ✓ Branch 0 taken 30475 times. ✗ Branch 1 not taken. ✓ Branch 2 taken 76 times. ✓ Branch 3 taken 30399 times. ✓ Branch 4 taken 60 times. ✓ Branch 5 taken 16 times.	30475	if (cluster_time != (uint64_t)-1 && (block_time >= 0 || cluster_time >= -block_time))
4390		30459	track->end_timecode =
4391		30459	FFMAX(track->end_timecode, timecode + block_duration);
4392
4393	2/2 ✓ Branch 0 taken 31079 times. ✓ Branch 1 taken 30475 times.	61554	for (n = 0; n < laces; n++) {
4394		31079	int64_t lace_duration = block_duration*(n+1) / laces - block_duration*n / laces;
4395		31079	uint8_t *out_data = data;
4396		31079	int out_size = lace_size[n];
4397
4398	2/2 ✓ Branch 0 taken 81 times. ✓ Branch 1 taken 30998 times.	31079	if (track->needs_decoding) {
4399		81	res = matroska_decode_buffer(&out_data, &out_size, track);
4400	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 81 times.	81	if (res < 0)
4401		✗	return res;
4402			/* Given that we are here means that out_data is no longer
4403			* owned by buf, so set it to NULL. This depends upon
4404			* zero-length header removal compression being ignored. */
4405			av_assert1(out_data != data);
4406		81	buf = NULL;
4407			}
4408
4409	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 31079 times.	31079	if (track->audio.buf) {
4410		✗	res = matroska_parse_rm_audio(matroska, track, st,
4411			out_data, out_size,
4412			timecode, pos);
4413		✗	if (!buf)
4414		✗	av_free(out_data);
4415		✗	if (res)
4416		✗	return res;
4417	2/2 ✓ Branch 0 taken 90 times. ✓ Branch 1 taken 30989 times.	31079	} else if (st->codecpar->codec_id == AV_CODEC_ID_WEBVTT) {
4418		90	res = matroska_parse_webvtt(matroska, track, st,
4419			out_data, out_size,
4420			timecode, lace_duration,
4421			pos);
4422	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 90 times.	90	if (!buf)
4423		✗	av_free(out_data);
4424	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 90 times.	90	if (res)
4425		✗	return res;
4426			} else {
4427		30989	res = matroska_parse_frame(matroska, track, st, buf, out_data,
4428			out_size, timecode, lace_duration,
4429			pos, is_keyframe,
4430			blockmore, nb_blockmore,
4431			discard_padding);
4432	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 30989 times.	30989	if (res)
4433		✗	return res;
4434			}
4435
4436	2/2 ✓ Branch 0 taken 30904 times. ✓ Branch 1 taken 175 times.	31079	if (timecode != AV_NOPTS_VALUE)
4437	2/2 ✓ Branch 0 taken 5590 times. ✓ Branch 1 taken 25314 times.	30904	timecode = lace_duration ? timecode + lace_duration : AV_NOPTS_VALUE;
4438		31079	data += lace_size[n];
4439			}
4440
4441		30475	return 0;
4442			}
4443
4444		31963	static int matroska_parse_cluster(MatroskaDemuxContext *matroska)
4445			{
4446		31963	MatroskaCluster *cluster = &matroska->current_cluster;
4447		31963	MatroskaBlock *block = &cluster->block;
4448			int res;
4449
4450	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 31963 times.	31963	av_assert0(matroska->num_levels <= 2U);
4451
4452	2/2 ✓ Branch 0 taken 1285 times. ✓ Branch 1 taken 30678 times.	31963	if (matroska->num_levels == 1) {
4453		1285	res = ebml_parse(matroska, matroska_segment, NULL);
4454
4455	2/2 ✓ Branch 0 taken 867 times. ✓ Branch 1 taken 418 times.	1285	if (res == 1) {
4456			/* Found a cluster: subtract the size of the ID already read. */
4457		867	cluster->pos = avio_tell(matroska->ctx->pb) - 4;
4458
4459		867	res = ebml_parse(matroska, matroska_cluster_enter, cluster);
4460	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 867 times.	867	if (res < 0)
4461		✗	return res;
4462			}
4463			}
4464
4465	2/2 ✓ Branch 0 taken 31502 times. ✓ Branch 1 taken 461 times.	31963	if (matroska->num_levels == 2) {
4466			/* We are inside a cluster. */
4467		31502	res = ebml_parse(matroska, matroska_cluster_parsing, cluster);
4468
4469	4/4 ✓ Branch 0 taken 31492 times. ✓ Branch 1 taken 10 times. ✓ Branch 2 taken 31487 times. ✓ Branch 3 taken 5 times.	31502	if (res >= 0 && block->bin.size > 0) {
4470	2/2 ✓ Branch 0 taken 579 times. ✓ Branch 1 taken 30908 times.	31487	int is_keyframe = block->non_simple ? block->reference.count == 0 : -1;
4471
4472		31487	res = matroska_parse_block(matroska, block->bin.buf, block->bin.data,
4473			block->bin.size, block->bin.pos,
4474			cluster->timecode, block->duration,
4475		31487	is_keyframe, block->blockmore.elem,
4476			block->blockmore.nb_elem, cluster->pos,
4477			block->discard_padding);
4478			}
4479
4480		31502	ebml_free(matroska_blockgroup, block);
4481		31502	memset(block, 0, sizeof(*block));
4482	2/2 ✓ Branch 0 taken 395 times. ✓ Branch 1 taken 66 times.	461	} else if (!matroska->num_levels) {
4483	2/2 ✓ Branch 1 taken 388 times. ✓ Branch 2 taken 7 times.	395	if (!avio_feof(matroska->ctx->pb)) {
4484		388	avio_r8(matroska->ctx->pb);
4485	1/2 ✗ Branch 1 not taken. ✓ Branch 2 taken 388 times.	388	if (!avio_feof(matroska->ctx->pb)) {
4486		✗	av_log(matroska->ctx, AV_LOG_WARNING, "File extends beyond "
4487			"end of segment.\n");
4488		✗	return AVERROR_INVALIDDATA;
4489			}
4490			}
4491		395	matroska->done = 1;
4492		395	return AVERROR_EOF;
4493			}
4494
4495		31568	return res;
4496			}
4497
4498		30512	static int matroska_read_packet(AVFormatContext *s, AVPacket *pkt)
4499			{
4500		30512	MatroskaDemuxContext *matroska = s->priv_data;
4501		30512	int ret = 0;
4502
4503	2/2 ✓ Branch 0 taken 10 times. ✓ Branch 1 taken 30502 times.	30512	if (matroska->resync_pos == -1) {
4504			// This can only happen if generic seeking has been used.
4505		10	matroska->resync_pos = avio_tell(s->pb);
4506			}
4507
4508	2/2 ✓ Branch 1 taken 31544 times. ✓ Branch 2 taken 30069 times.	61613	while (matroska_deliver_packet(matroska, pkt)) {
4509	2/2 ✓ Branch 0 taken 443 times. ✓ Branch 1 taken 31101 times.	31544	if (matroska->done)
4510	2/2 ✓ Branch 0 taken 10 times. ✓ Branch 1 taken 433 times.	443	return (ret < 0) ? ret : AVERROR_EOF;
4511	4/4 ✓ Branch 1 taken 382 times. ✓ Branch 2 taken 30719 times. ✓ Branch 3 taken 13 times. ✓ Branch 4 taken 369 times.	31101	if (matroska_parse_cluster(matroska) < 0 && !matroska->done)
4512		13	ret = matroska_resync(matroska, matroska->resync_pos);
4513			}
4514
4515		30069	return 0;
4516			}
4517
4518		62	static int matroska_read_seek(AVFormatContext *s, int stream_index,
4519			int64_t timestamp, int flags)
4520			{
4521		62	MatroskaDemuxContext *matroska = s->priv_data;
4522		62	MatroskaTrack *tracks = NULL;
4523		62	AVStream *st = s->streams[stream_index];
4524		62	FFStream *const sti = ffstream(st);
4525			int i, index;
4526
4527			/* Parse the CUES now since we need the index data to seek. */
4528	2/2 ✓ Branch 0 taken 7 times. ✓ Branch 1 taken 55 times.	62	if (matroska->cues_parsing_deferred > 0) {
4529		7	matroska->cues_parsing_deferred = 0;
4530		7	matroska_parse_cues(matroska);
4531			}
4532
4533	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 62 times.	62	if (!sti->nb_index_entries)
4534		✗	goto err;
4535		62	timestamp = FFMAX(timestamp, sti->index_entries[0].timestamp);
4536
4537	2/2 ✓ Branch 1 taken 52 times. ✓ Branch 2 taken 10 times.	62	if ((index = av_index_search_timestamp(st, timestamp, flags)) < 0 ||
4538	2/2 ✓ Branch 0 taken 21 times. ✓ Branch 1 taken 31 times.	52	index == sti->nb_index_entries - 1) {
4539		31	matroska_reset_status(matroska, 0, sti->index_entries[sti->nb_index_entries - 1].pos);
4540	2/2 ✓ Branch 1 taken 285 times. ✓ Branch 2 taken 503 times.	788	while ((index = av_index_search_timestamp(st, timestamp, flags)) < 0 ||
4541	2/2 ✓ Branch 0 taken 498 times. ✓ Branch 1 taken 5 times.	503	index == sti->nb_index_entries - 1) {
4542		783	matroska_clear_queue(matroska);
4543	2/2 ✓ Branch 1 taken 26 times. ✓ Branch 2 taken 757 times.	783	if (matroska_parse_cluster(matroska) < 0)
4544		26	break;
4545			}
4546			}
4547
4548		62	matroska_clear_queue(matroska);
4549	4/4 ✓ Branch 0 taken 52 times. ✓ Branch 1 taken 10 times. ✓ Branch 2 taken 3 times. ✓ Branch 3 taken 49 times.	62	if (index < 0 || (matroska->cues_parsing_deferred < 0 &&
4550	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 3 times.	3	index == sti->nb_index_entries - 1))
4551		10	goto err;
4552
4553		52	tracks = matroska->tracks.elem;
4554	2/2 ✓ Branch 0 taken 79 times. ✓ Branch 1 taken 52 times.	131	for (i = 0; i < matroska->tracks.nb_elem; i++) {
4555		79	tracks[i].audio.pkt_cnt = 0;
4556		79	tracks[i].audio.sub_packet_cnt = 0;
4557		79	tracks[i].audio.buf_timecode = AV_NOPTS_VALUE;
4558		79	tracks[i].end_timecode = 0;
4559			}
4560
4561			/* We seek to a level 1 element, so set the appropriate status. */
4562		52	matroska_reset_status(matroska, 0, sti->index_entries[index].pos);
4563	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 52 times.	52	if (flags & AVSEEK_FLAG_ANY) {
4564		✗	sti->skip_to_keyframe = 0;
4565		✗	matroska->skip_to_timecode = timestamp;
4566			} else {
4567		52	sti->skip_to_keyframe = 1;
4568		52	matroska->skip_to_timecode = sti->index_entries[index].timestamp;
4569			}
4570		52	matroska->skip_to_keyframe = 1;
4571		52	matroska->done = 0;
4572		52	avpriv_update_cur_dts(s, st, sti->index_entries[index].timestamp);
4573		52	return 0;
4574		10	err:
4575			// slightly hackish but allows proper fallback to
4576			// the generic seeking code.
4577		10	matroska_reset_status(matroska, 0, -1);
4578		10	matroska->resync_pos = -1;
4579		10	matroska_clear_queue(matroska);
4580		10	sti->skip_to_keyframe =
4581		10	matroska->skip_to_keyframe = 0;
4582		10	matroska->done = 0;
4583		10	return -1;
4584			}
4585
4586		421	static int matroska_read_close(AVFormatContext *s)
4587			{
4588		421	MatroskaDemuxContext *matroska = s->priv_data;
4589		421	MatroskaTrack *tracks = matroska->tracks.elem;
4590			int n;
4591
4592		421	matroska_clear_queue(matroska);
4593
4594	2/2 ✓ Branch 0 taken 501 times. ✓ Branch 1 taken 421 times.	922	for (n = 0; n < matroska->tracks.nb_elem; n++)
4595	2/2 ✓ Branch 0 taken 95 times. ✓ Branch 1 taken 406 times.	501	if (tracks[n].type == MATROSKA_TRACK_TYPE_AUDIO)
4596		95	av_freep(&tracks[n].audio.buf);
4597		421	ebml_free(matroska_segment, matroska);
4598
4599		421	return 0;
4600			}
4601
4602			#if CONFIG_WEBM_DASH_MANIFEST_DEMUXER
4603			typedef struct {
4604			int64_t start_time_ns;
4605			int64_t end_time_ns;
4606			int64_t start_offset;
4607			int64_t end_offset;
4608			} CueDesc;
4609
4610			/* This function searches all the Cues and returns the CueDesc corresponding to
4611			* the timestamp ts. Returned CueDesc will be such that start_time_ns <= ts <
4612			* end_time_ns. All 4 fields will be set to -1 if ts >= file's duration or
4613			* if an error occurred.
4614			*/
4615		4051	static CueDesc get_cue_desc(AVFormatContext *s, int64_t ts, int64_t cues_start) {
4616		4051	MatroskaDemuxContext *matroska = s->priv_data;
4617		4051	FFStream *const sti = ffstream(s->streams[0]);
4618		4051	AVIndexEntry *const index_entries = sti->index_entries;
4619		4051	int nb_index_entries = sti->nb_index_entries;
4620			CueDesc cue_desc;
4621			int i;
4622
4623	2/2 ✓ Branch 0 taken 101 times. ✓ Branch 1 taken 3950 times.	4051	if (ts >= (int64_t)(matroska->duration * matroska->time_scale))
4624		101	return (CueDesc) {-1, -1, -1, -1};
4625	2/2 ✓ Branch 0 taken 45235 times. ✓ Branch 1 taken 156 times.	45391	for (i = 1; i < nb_index_entries; i++) {
4626	1/2 ✓ Branch 0 taken 45235 times. ✗ Branch 1 not taken.	45235	if (index_entries[i - 1].timestamp * matroska->time_scale <= ts &&
4627	2/2 ✓ Branch 0 taken 3794 times. ✓ Branch 1 taken 41441 times.	45235	index_entries[i].timestamp * matroska->time_scale > ts) {
4628		3794	break;
4629			}
4630			}
4631		3950	--i;
4632	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 3950 times.	3950	if (index_entries[i].timestamp > matroska->duration)
4633		✗	return (CueDesc) {-1, -1, -1, -1};
4634		3950	cue_desc.start_time_ns = index_entries[i].timestamp * matroska->time_scale;
4635		3950	cue_desc.start_offset = index_entries[i].pos - matroska->segment_start;
4636	2/2 ✓ Branch 0 taken 3794 times. ✓ Branch 1 taken 156 times.	3950	if (i != nb_index_entries - 1) {
4637		3794	cue_desc.end_time_ns = index_entries[i + 1].timestamp * matroska->time_scale;
4638		3794	cue_desc.end_offset = index_entries[i + 1].pos - matroska->segment_start;
4639			} else {
4640		156	cue_desc.end_time_ns = matroska->duration * matroska->time_scale;
4641			// FIXME: this needs special handling for files where Cues appear
4642			// before Clusters. the current logic assumes Cues appear after
4643			// Clusters.
4644		156	cue_desc.end_offset = cues_start - matroska->segment_start;
4645			}
4646
4647	1/2 ✓ Branch 0 taken 3950 times. ✗ Branch 1 not taken.	3950	if (cue_desc.end_time_ns < cue_desc.start_time_ns ||
4648	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 3950 times.	3950	cue_desc.end_time_ns - (uint64_t)cue_desc.start_time_ns > INT64_MAX)
4649		✗	return (CueDesc) {-1, -1, -1, -1};
4650
4651		3950	return cue_desc;
4652			}
4653
4654		10	static int webm_clusters_start_with_keyframe(AVFormatContext *s)
4655			{
4656		10	MatroskaDemuxContext *matroska = s->priv_data;
4657		10	AVStream *const st = s->streams[0];
4658		10	FFStream *const sti = ffstream(st);
4659		10	uint32_t id = matroska->current_id;
4660			int64_t cluster_pos, before_pos;
4661		10	int index, rv = 1;
4662
4663	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 10 times.	10	if (sti->nb_index_entries <= 0)
4664		✗	return 0;
4665
4666			// seek to the first cluster using cues.
4667		10	index = av_index_search_timestamp(st, 0, 0);
4668	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 10 times.	10	if (index < 0)
4669		✗	return 0;
4670		10	cluster_pos = sti->index_entries[index].pos;
4671		10	before_pos = avio_tell(s->pb);
4672		78	while (1) {
4673			uint64_t cluster_id, cluster_length;
4674			int read;
4675			AVPacket *pkt;
4676		88	avio_seek(s->pb, cluster_pos, SEEK_SET);
4677			// read cluster id and length
4678		88	read = ebml_read_num(matroska, matroska->ctx->pb, 4, &cluster_id, 1);
4679	3/4 ✓ Branch 0 taken 88 times. ✗ Branch 1 not taken. ✓ Branch 2 taken 79 times. ✓ Branch 3 taken 9 times.	88	if (read < 0 || cluster_id != 0xF43B675) // done with all clusters
4680			break;
4681		79	read = ebml_read_length(matroska, matroska->ctx->pb, &cluster_length);
4682	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 79 times.	79	if (read < 0)
4683		✗	break;
4684
4685		79	matroska_reset_status(matroska, 0, cluster_pos);
4686		79	matroska_clear_queue(matroska);
4687	1/2 ✓ Branch 1 taken 79 times. ✗ Branch 2 not taken.	79	if (matroska_parse_cluster(matroska) < 0 ||
4688	1/2 ✓ Branch 0 taken 79 times. ✗ Branch 1 not taken.	79	!matroska->queue.head) {
4689			break;
4690			}
4691		79	pkt = &matroska->queue.head->pkt;
4692			// 4 + read is the length of the cluster id and the cluster length field.
4693		79	cluster_pos += 4 + read + cluster_length;
4694	2/2 ✓ Branch 0 taken 1 times. ✓ Branch 1 taken 78 times.	79	if (!(pkt->flags & AV_PKT_FLAG_KEY)) {
4695		1	rv = 0;
4696		1	break;
4697			}
4698			}
4699
4700			/* Restore the status after matroska_read_header: */
4701		10	matroska_reset_status(matroska, id, before_pos);
4702
4703		10	return rv;
4704			}
4705
4706		555	static int buffer_size_after_time_downloaded(int64_t time_ns, double search_sec, int64_t bps,
4707			double min_buffer, double* buffer,
4708			double* sec_to_download, AVFormatContext *s,
4709			int64_t cues_start)
4710			{
4711		555	double nano_seconds_per_second = 1000000000.0;
4712		555	double time_sec = time_ns / nano_seconds_per_second;
4713		555	int rv = 0;
4714		555	int64_t time_to_search_ns = (int64_t)(search_sec * nano_seconds_per_second);
4715		555	int64_t end_time_ns = time_ns + time_to_search_ns;
4716		555	double sec_downloaded = 0.0;
4717		555	CueDesc desc_curr = get_cue_desc(s, time_ns, cues_start);
4718	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 555 times.	555	if (desc_curr.start_time_ns == -1)
4719		✗	return -1;
4720		555	*sec_to_download = 0.0;
4721
4722			// Check for non cue start time.
4723	2/2 ✓ Branch 0 taken 513 times. ✓ Branch 1 taken 42 times.	555	if (time_ns > desc_curr.start_time_ns) {
4724		513	int64_t cue_nano = desc_curr.end_time_ns - time_ns;
4725		513	double percent = (double)(cue_nano) / (desc_curr.end_time_ns - desc_curr.start_time_ns);
4726		513	double cueBytes = (desc_curr.end_offset - desc_curr.start_offset) * percent;
4727		513	double timeToDownload = (cueBytes * 8.0) / bps;
4728
4729		513	sec_downloaded += (cue_nano / nano_seconds_per_second) - timeToDownload;
4730		513	*sec_to_download += timeToDownload;
4731
4732			// Check if the search ends within the first cue.
4733	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 513 times.	513	if (desc_curr.end_time_ns >= end_time_ns) {
4734		✗	double desc_end_time_sec = desc_curr.end_time_ns / nano_seconds_per_second;
4735		✗	double percent_to_sub = search_sec / (desc_end_time_sec - time_sec);
4736		✗	sec_downloaded = percent_to_sub * sec_downloaded;
4737		✗	*sec_to_download = percent_to_sub * *sec_to_download;
4738			}
4739
4740	2/2 ✓ Branch 0 taken 4 times. ✓ Branch 1 taken 509 times.	513	if ((sec_downloaded + *buffer) <= min_buffer) {
4741		4	return 1;
4742			}
4743
4744			// Get the next Cue.
4745		509	desc_curr = get_cue_desc(s, desc_curr.end_time_ns, cues_start);
4746			}
4747
4748	2/2 ✓ Branch 0 taken 2856 times. ✓ Branch 1 taken 100 times.	2956	while (desc_curr.start_time_ns != -1) {
4749		2856	int64_t desc_bytes = desc_curr.end_offset - desc_curr.start_offset;
4750		2856	int64_t desc_ns = desc_curr.end_time_ns - desc_curr.start_time_ns;
4751		2856	double desc_sec = desc_ns / nano_seconds_per_second;
4752		2856	double bits = (desc_bytes * 8.0);
4753		2856	double time_to_download = bits / bps;
4754
4755		2856	sec_downloaded += desc_sec - time_to_download;
4756		2856	*sec_to_download += time_to_download;
4757
4758	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 2856 times.	2856	if (desc_curr.end_time_ns >= end_time_ns) {
4759		✗	double desc_end_time_sec = desc_curr.end_time_ns / nano_seconds_per_second;
4760		✗	double percent_to_sub = search_sec / (desc_end_time_sec - time_sec);
4761		✗	sec_downloaded = percent_to_sub * sec_downloaded;
4762		✗	*sec_to_download = percent_to_sub * *sec_to_download;
4763
4764		✗	if ((sec_downloaded + *buffer) <= min_buffer)
4765		✗	rv = 1;
4766		✗	break;
4767			}
4768
4769	2/2 ✓ Branch 0 taken 451 times. ✓ Branch 1 taken 2405 times.	2856	if ((sec_downloaded + *buffer) <= min_buffer) {
4770		451	rv = 1;
4771		451	break;
4772			}
4773
4774		2405	desc_curr = get_cue_desc(s, desc_curr.end_time_ns, cues_start);
4775			}
4776		551	*buffer = *buffer + sec_downloaded;
4777		551	return rv;
4778			}
4779
4780			/* This function computes the bandwidth of the WebM file with the help of
4781			* buffer_size_after_time_downloaded() function. Both of these functions are
4782			* adapted from WebM Tools project and are adapted to work with FFmpeg's
4783			* Matroska parsing mechanism.
4784			*
4785			* Returns the bandwidth of the file on success; -1 on error.
4786			* */
4787		10	static int64_t webm_dash_manifest_compute_bandwidth(AVFormatContext *s, int64_t cues_start)
4788			{
4789		10	MatroskaDemuxContext *matroska = s->priv_data;
4790		10	AVStream *st = s->streams[0];
4791		10	FFStream *const sti = ffstream(st);
4792		10	double bandwidth = 0.0;
4793
4794	2/2 ✓ Branch 0 taken 101 times. ✓ Branch 1 taken 10 times.	111	for (int i = 0; i < sti->nb_index_entries; i++) {
4795		101	int64_t prebuffer_ns = 1000000000;
4796		101	int64_t time_ns = sti->index_entries[i].timestamp * matroska->time_scale;
4797		101	double nano_seconds_per_second = 1000000000.0;
4798			int64_t prebuffered_ns;
4799		101	double prebuffer_bytes = 0.0;
4800		101	int64_t temp_prebuffer_ns = prebuffer_ns;
4801			int64_t pre_bytes, pre_ns;
4802			double pre_sec, prebuffer, bits_per_second;
4803		101	CueDesc desc_beg = get_cue_desc(s, time_ns, cues_start);
4804			// Start with the first Cue.
4805		101	CueDesc desc_end = desc_beg;
4806
4807	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 101 times.	101	if (time_ns > INT64_MAX - prebuffer_ns)
4808		✗	return -1;
4809		101	prebuffered_ns = time_ns + prebuffer_ns;
4810
4811			// Figure out how much data we have downloaded for the prebuffer. This will
4812			// be used later to adjust the bits per sample to try.
4813	4/4 ✓ Branch 0 taken 121 times. ✓ Branch 1 taken 1 times. ✓ Branch 2 taken 21 times. ✓ Branch 3 taken 100 times.	122	while (desc_end.start_time_ns != -1 && desc_end.end_time_ns < prebuffered_ns) {
4814			// Prebuffered the entire Cue.
4815		21	prebuffer_bytes += desc_end.end_offset - desc_end.start_offset;
4816		21	temp_prebuffer_ns -= desc_end.end_time_ns - desc_end.start_time_ns;
4817		21	desc_end = get_cue_desc(s, desc_end.end_time_ns, cues_start);
4818			}
4819	2/2 ✓ Branch 0 taken 1 times. ✓ Branch 1 taken 100 times.	101	if (desc_end.start_time_ns == -1) {
4820			// The prebuffer is larger than the duration.
4821	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 1 times.	1	if (matroska->duration * matroska->time_scale >= prebuffered_ns)
4822		✗	return -1;
4823		1	bits_per_second = 0.0;
4824			} else {
4825			// The prebuffer ends in the last Cue. Estimate how much data was
4826			// prebuffered.
4827		100	pre_bytes = desc_end.end_offset - desc_end.start_offset;
4828	1/2 ✓ Branch 0 taken 100 times. ✗ Branch 1 not taken.	100	if (desc_end.end_time_ns <= desc_end.start_time_ns ||
4829	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 100 times.	100	desc_end.end_time_ns - (uint64_t)desc_end.start_time_ns > INT64_MAX)
4830		✗	return -1;
4831		100	pre_ns = desc_end.end_time_ns - desc_end.start_time_ns;
4832		100	pre_sec = pre_ns / nano_seconds_per_second;
4833		100	prebuffer_bytes +=
4834		100	pre_bytes * ((temp_prebuffer_ns / nano_seconds_per_second) / pre_sec);
4835
4836		100	prebuffer = prebuffer_ns / nano_seconds_per_second;
4837
4838			// Set this to 0.0 in case our prebuffer buffers the entire video.
4839		100	bits_per_second = 0.0;
4840			do {
4841		560	int64_t desc_bytes = desc_end.end_offset - desc_beg.start_offset;
4842			double desc_sec, calc_bits_per_second, percent, mod_bits_per_second;
4843	2/4 ✓ Branch 0 taken 560 times. ✗ Branch 1 not taken. ✗ Branch 2 not taken. ✓ Branch 3 taken 560 times.	560	if (desc_bytes <= 0 || desc_bytes > INT64_MAX/8)
4844		✗	return -1;
4845	1/2 ✓ Branch 0 taken 560 times. ✗ Branch 1 not taken.	560	if (desc_end.end_time_ns <= desc_beg.start_time_ns ||
4846	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 560 times.	560	desc_end.end_time_ns - (uint64_t)desc_beg.start_time_ns > INT64_MAX)
4847		✗	return -1;
4848
4849		560	int64_t desc_ns = desc_end.end_time_ns - desc_beg.start_time_ns;
4850		560	desc_sec = desc_ns / nano_seconds_per_second;
4851		560	calc_bits_per_second = (desc_bytes * 8) / desc_sec;
4852
4853			// Drop the bps by the percentage of bytes buffered.
4854		560	percent = (desc_bytes - prebuffer_bytes) / desc_bytes;
4855		560	mod_bits_per_second = calc_bits_per_second * percent;
4856
4857	2/2 ✓ Branch 0 taken 555 times. ✓ Branch 1 taken 5 times.	560	if (prebuffer < desc_sec) {
4858		555	double search_sec =
4859		555	(double)(matroska->duration * matroska->time_scale) / nano_seconds_per_second;
4860
4861			// Add 1 so the bits per second should be a little bit greater than file
4862			// datarate.
4863		555	int64_t bps = (int64_t)(mod_bits_per_second) + 1;
4864		555	const double min_buffer = 0.0;
4865		555	double buffer = prebuffer;
4866		555	double sec_to_download = 0.0;
4867
4868		555	int rv = buffer_size_after_time_downloaded(prebuffered_ns, search_sec, bps,
4869			min_buffer, &buffer, &sec_to_download,
4870			s, cues_start);
4871	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 555 times.	555	if (rv < 0) {
4872		✗	return -1;
4873	2/2 ✓ Branch 0 taken 100 times. ✓ Branch 1 taken 455 times.	555	} else if (rv == 0) {
4874		100	bits_per_second = (double)(bps);
4875		100	break;
4876			}
4877			}
4878
4879		460	desc_end = get_cue_desc(s, desc_end.end_time_ns, cues_start);
4880	1/2 ✓ Branch 0 taken 460 times. ✗ Branch 1 not taken.	460	} while (desc_end.start_time_ns != -1);
4881			}
4882	2/2 ✓ Branch 0 taken 38 times. ✓ Branch 1 taken 63 times.	101	if (bandwidth < bits_per_second) bandwidth = bits_per_second;
4883			}
4884		10	return (int64_t)bandwidth;
4885			}
4886
4887		10	static int webm_dash_manifest_cues(AVFormatContext *s, int64_t init_range)
4888			{
4889		10	MatroskaDemuxContext *matroska = s->priv_data;
4890		10	EbmlList *seekhead_list = &matroska->seekhead;
4891		10	MatroskaSeekhead *seekhead = seekhead_list->elem;
4892		10	AVStream *const st = s->streams[0];
4893		10	FFStream *const sti = ffstream(st);
4894			AVBPrint bprint;
4895			char *buf;
4896		10	int64_t cues_start = -1, cues_end = -1, before_pos, bandwidth;
4897			int i;
4898			int ret;
4899
4900			// determine cues start and end positions
4901	1/2 ✓ Branch 0 taken 34 times. ✗ Branch 1 not taken.	34	for (i = 0; i < seekhead_list->nb_elem; i++)
4902	2/2 ✓ Branch 0 taken 10 times. ✓ Branch 1 taken 24 times.	34	if (seekhead[i].id == MATROSKA_ID_CUES)
4903		10	break;
4904
4905	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 10 times.	10	if (i >= seekhead_list->nb_elem) return -1;
4906
4907		10	before_pos = avio_tell(matroska->ctx->pb);
4908		10	cues_start = seekhead[i].pos + matroska->segment_start;
4909	1/2 ✓ Branch 1 taken 10 times. ✗ Branch 2 not taken.	10	if (avio_seek(matroska->ctx->pb, cues_start, SEEK_SET) == cues_start) {
4910			// cues_end is computed as cues_start + cues_length + length of the
4911			// Cues element ID (i.e. 4) + EBML length of the Cues element.
4912			// cues_end is inclusive and the above sum is reduced by 1.
4913			uint64_t cues_length, cues_id;
4914			int bytes_read;
4915		10	bytes_read = ebml_read_num (matroska, matroska->ctx->pb, 4, &cues_id, 1);
4916	2/4 ✓ Branch 0 taken 10 times. ✗ Branch 1 not taken. ✗ Branch 2 not taken. ✓ Branch 3 taken 10 times.	10	if (bytes_read < 0 || cues_id != (MATROSKA_ID_CUES & 0xfffffff))
4917		✗	return bytes_read < 0 ? bytes_read : AVERROR_INVALIDDATA;
4918		10	bytes_read = ebml_read_length(matroska, matroska->ctx->pb, &cues_length);
4919	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 10 times.	10	if (bytes_read < 0)
4920		✗	return bytes_read;
4921		10	cues_end = cues_start + 4 + bytes_read + cues_length - 1;
4922			}
4923		10	avio_seek(matroska->ctx->pb, before_pos, SEEK_SET);
4924	2/4 ✓ Branch 0 taken 10 times. ✗ Branch 1 not taken. ✗ Branch 2 not taken. ✓ Branch 3 taken 10 times.	10	if (cues_start == -1 || cues_end == -1) return -1;
4925
4926			// parse the cues
4927		10	matroska_parse_cues(matroska);
4928
4929	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 10 times.	10	if (!sti->nb_index_entries)
4930		✗	return AVERROR_INVALIDDATA;
4931
4932			// cues start
4933		10	av_dict_set_int(&s->streams[0]->metadata, CUES_START, cues_start, 0);
4934
4935			// cues end
4936		10	av_dict_set_int(&s->streams[0]->metadata, CUES_END, cues_end, 0);
4937
4938			// if the file has cues at the start, fix up the init range so that
4939			// it does not include it
4940	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 10 times.	10	if (cues_start <= init_range)
4941		✗	av_dict_set_int(&s->streams[0]->metadata, INITIALIZATION_RANGE, cues_start - 1, 0);
4942
4943			// bandwidth
4944		10	bandwidth = webm_dash_manifest_compute_bandwidth(s, cues_start);
4945	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 10 times.	10	if (bandwidth < 0) return -1;
4946		10	av_dict_set_int(&s->streams[0]->metadata, BANDWIDTH, bandwidth, 0);
4947
4948			// check if all clusters start with key frames
4949		10	av_dict_set_int(&s->streams[0]->metadata, CLUSTER_KEYFRAME, webm_clusters_start_with_keyframe(s), 0);
4950
4951			// Store cue point timestamps as a comma separated list
4952			// for checking subsegment alignment in the muxer.
4953		10	av_bprint_init(&bprint, 0, AV_BPRINT_SIZE_UNLIMITED);
4954	2/2 ✓ Branch 0 taken 101 times. ✓ Branch 1 taken 10 times.	111	for (int j = 0; j < sti->nb_index_entries; j++)
4955		101	av_bprintf(&bprint, "%" PRId64",", sti->index_entries[j].timestamp);
4956	1/2 ✗ Branch 1 not taken. ✓ Branch 2 taken 10 times.	10	if (!av_bprint_is_complete(&bprint)) {
4957		✗	av_bprint_finalize(&bprint, NULL);
4958		✗	return AVERROR(ENOMEM);
4959			}
4960			// Remove the trailing ','
4961		10	bprint.str[--bprint.len] = '\0';
4962	1/2 ✗ Branch 1 not taken. ✓ Branch 2 taken 10 times.	10	if ((ret = av_bprint_finalize(&bprint, &buf)) < 0)
4963		✗	return ret;
4964		10	av_dict_set(&s->streams[0]->metadata, CUE_TIMESTAMPS,
4965			buf, AV_DICT_DONT_STRDUP_VAL);
4966
4967		10	return 0;
4968			}
4969
4970		14	static int webm_dash_manifest_read_header(AVFormatContext *s)
4971			{
4972			char *buf;
4973		14	int ret = matroska_read_header(s);
4974			int64_t init_range;
4975			MatroskaTrack *tracks;
4976		14	MatroskaDemuxContext *matroska = s->priv_data;
4977	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 14 times.	14	if (ret) {
4978		✗	av_log(s, AV_LOG_ERROR, "Failed to read file headers\n");
4979		✗	return -1;
4980			}
4981	2/4 ✓ Branch 0 taken 14 times. ✗ Branch 1 not taken. ✗ Branch 2 not taken. ✓ Branch 3 taken 14 times.	14	if (!matroska->tracks.nb_elem || !s->nb_streams) {
4982		✗	av_log(s, AV_LOG_ERROR, "No track found\n");
4983		✗	return AVERROR_INVALIDDATA;
4984			}
4985
4986	2/2 ✓ Branch 0 taken 10 times. ✓ Branch 1 taken 4 times.	14	if (!matroska->is_live) {
4987		10	buf = av_asprintf("%g", matroska->duration);
4988	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 10 times.	10	if (!buf)
4989		✗	return AVERROR(ENOMEM);
4990		10	av_dict_set(&s->streams[0]->metadata, DURATION,
4991			buf, AV_DICT_DONT_STRDUP_VAL);
4992
4993			// initialization range
4994			// 5 is the offset of Cluster ID.
4995		10	init_range = avio_tell(s->pb) - 5;
4996		10	av_dict_set_int(&s->streams[0]->metadata, INITIALIZATION_RANGE, init_range, 0);
4997			}
4998
4999			// basename of the file
5000		14	buf = strrchr(s->url, '/');
5001	1/2 ✓ Branch 0 taken 14 times. ✗ Branch 1 not taken.	14	av_dict_set(&s->streams[0]->metadata, FILENAME, buf ? ++buf : s->url, 0);
5002
5003			// track number
5004		14	tracks = matroska->tracks.elem;
5005		14	av_dict_set_int(&s->streams[0]->metadata, TRACK_NUMBER, tracks[0].num, 0);
5006
5007			// parse the cues and populate Cue related fields
5008	2/2 ✓ Branch 0 taken 10 times. ✓ Branch 1 taken 4 times.	14	if (!matroska->is_live) {
5009		10	ret = webm_dash_manifest_cues(s, init_range);
5010	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 10 times.	10	if (ret < 0) {
5011		✗	av_log(s, AV_LOG_ERROR, "Error parsing Cues\n");
5012		✗	return ret;
5013			}
5014			}
5015
5016			// use the bandwidth from the command line if it was provided
5017	2/2 ✓ Branch 0 taken 2 times. ✓ Branch 1 taken 12 times.	14	if (matroska->bandwidth > 0) {
5018		2	av_dict_set_int(&s->streams[0]->metadata, BANDWIDTH,
5019		2	matroska->bandwidth, 0);
5020			}
5021		14	return 0;
5022			}
5023
5024		28	static int webm_dash_manifest_read_packet(AVFormatContext *s, AVPacket *pkt)
5025			{
5026		28	return AVERROR_EOF;
5027			}
5028
5029			#define OFFSET(x) offsetof(MatroskaDemuxContext, x)
5030			static const AVOption options[] = {
5031			{ "live", "flag indicating that the input is a live file that only has the headers.", OFFSET(is_live), AV_OPT_TYPE_BOOL, {.i64 = 0}, 0, 1, AV_OPT_FLAG_DECODING_PARAM },
5032			{ "bandwidth", "bandwidth of this stream to be specified in the DASH manifest.", OFFSET(bandwidth), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, AV_OPT_FLAG_DECODING_PARAM },
5033			{ NULL },
5034			};
5035
5036			static const AVClass webm_dash_class = {
5037			.class_name = "WebM DASH Manifest demuxer",
5038			.item_name = av_default_item_name,
5039			.option = options,
5040			.version = LIBAVUTIL_VERSION_INT,
5041			};
5042
5043			const FFInputFormat ff_webm_dash_manifest_demuxer = {
5044			.p.name = "webm_dash_manifest",
5045			.p.long_name = NULL_IF_CONFIG_SMALL("WebM DASH Manifest"),
5046			.p.priv_class = &webm_dash_class,
5047			.priv_data_size = sizeof(MatroskaDemuxContext),
5048			.flags_internal = FF_INFMT_FLAG_INIT_CLEANUP,
5049			.read_header = webm_dash_manifest_read_header,
5050			.read_packet = webm_dash_manifest_read_packet,
5051			.read_close = matroska_read_close,
5052			};
5053			#endif
5054
5055			const FFInputFormat ff_matroska_demuxer = {
5056			.p.name = "matroska,webm",
5057			.p.long_name = NULL_IF_CONFIG_SMALL("Matroska / WebM"),
5058			.p.extensions = "mkv,mk3d,mka,mks,webm",
5059			.p.mime_type = "audio/webm,audio/x-matroska,video/webm,video/x-matroska",
5060			.priv_data_size = sizeof(MatroskaDemuxContext),
5061			.flags_internal = FF_INFMT_FLAG_INIT_CLEANUP,
5062			.read_probe = matroska_probe,
5063			.read_header = matroska_read_header,
5064			.read_packet = matroska_read_packet,
5065			.read_close = matroska_read_close,
5066			.read_seek = matroska_read_seek,
5067			};
5068