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		226	static int matroska_reset_status(MatroskaDemuxContext *matroska,
847			uint32_t id, int64_t position)
848			{
849		226	int64_t err = 0;
850	2/2 ✓ Branch 0 taken 213 times. ✓ Branch 1 taken 13 times.	226	if (position >= 0) {
851		213	err = avio_seek(matroska->ctx->pb, position, SEEK_SET);
852	1/2 ✓ Branch 0 taken 213 times. ✗ Branch 1 not taken.	213	if (err > 0)
853		213	err = 0;
854			} else
855		13	position = avio_tell(matroska->ctx->pb);
856
857		226	matroska->current_id = id;
858		226	matroska->num_levels = 1;
859		226	matroska->unknown_count = 0;
860		226	matroska->resync_pos = position;
861	2/2 ✓ Branch 0 taken 63 times. ✓ Branch 1 taken 163 times.	226	if (id)
862		63	matroska->resync_pos -= (av_log2(id) + 7) / 8;
863
864		226	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		149140	static int ebml_read_num(MatroskaDemuxContext *matroska, AVIOContext *pb,
915			int max_size, uint64_t *number, int eof_forbidden)
916			{
917		149140	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		149140	total = avio_r8(pb);
923	2/2 ✓ Branch 0 taken 14 times. ✓ Branch 1 taken 149126 times.	149140	if (pb->eof_reached)
924		14	goto err;
925
926			/* get the length of the EBML number */
927		149126	read = 8 - ff_log2_tab[total];
928
929	2/4 ✓ Branch 0 taken 149126 times. ✗ Branch 1 not taken. ✗ Branch 2 not taken. ✓ Branch 3 taken 149126 times.	149126	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		149126	total ^= 1 << ff_log2_tab[total];
946	2/2 ✓ Branch 0 taken 75601 times. ✓ Branch 1 taken 149126 times.	224727	while (n++ < read)
947		75601	total = (total << 8) | avio_r8(pb);
948
949	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 149126 times.	149126	if (pb->eof_reached) {
950		✗	eof_forbidden = 1;
951		✗	goto err;
952			}
953
954		149126	*number = total;
955
956		149126	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		58963	static int ebml_read_length(MatroskaDemuxContext *matroska, AVIOContext *pb,
980			uint64_t *number)
981			{
982		58963	int res = ebml_read_num(matroska, pb, 8, number, 1);
983	3/4 ✓ Branch 0 taken 58963 times. ✗ Branch 1 not taken. ✓ Branch 2 taken 17 times. ✓ Branch 3 taken 58946 times.	58963	if (res > 0 && *number + 1 == 1ULL << (7 * res))
984		17	*number = EBML_UNKNOWN_LENGTH;
985		58963	return res;
986			}
987
988			/*
989			* Read the next element as an unsigned int.
990			* Returns NEEDS_CHECKING unless size == 0.
991			*/
992		11590	static int ebml_read_uint(AVIOContext *pb, int size,
993			uint64_t default_value, uint64_t *num)
994			{
995		11590	int n = 0;
996
997	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 11590 times.	11590	if (size == 0) {
998		✗	*num = default_value;
999		✗	return 0;
1000			}
1001			/* big-endian ordering; build up number */
1002		11590	*num = 0;
1003	2/2 ✓ Branch 0 taken 29601 times. ✓ Branch 1 taken 11590 times.	41191	while (n++ < size)
1004		29601	*num = (*num << 8) | avio_r8(pb);
1005
1006		11590	return NEEDS_CHECKING;
1007			}
1008
1009			/*
1010			* Read the next element as a signed int.
1011			* Returns NEEDS_CHECKING unless size == 0.
1012			*/
1013		188	static int ebml_read_sint(AVIOContext *pb, int size,
1014			int64_t default_value, int64_t *num)
1015			{
1016		188	int n = 1;
1017
1018	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 188 times.	188	if (size == 0) {
1019		✗	*num = default_value;
1020		✗	return 0;
1021			} else {
1022		188	*num = sign_extend(avio_r8(pb), 8);
1023
1024			/* big-endian ordering; build up number */
1025	2/2 ✓ Branch 0 taken 155 times. ✓ Branch 1 taken 188 times.	343	while (n++ < size)
1026		155	*num = ((uint64_t)*num << 8) | avio_r8(pb);
1027			}
1028
1029		188	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		899	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 899 times.	899	if (size == 0) {
1040		✗	*num = default_value;
1041		✗	return 0;
1042	2/2 ✓ Branch 0 taken 224 times. ✓ Branch 1 taken 675 times.	899	} else if (size == 4) {
1043		224	*num = av_int2float(avio_rb32(pb));
1044	1/2 ✓ Branch 0 taken 675 times. ✗ Branch 1 not taken.	675	} else if (size == 8) {
1045		675	*num = av_int2double(avio_rb64(pb));
1046			} else
1047		✗	return AVERROR_INVALIDDATA;
1048
1049		899	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		2907	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 2907 times. ✗ Branch 2 not taken. ✗ Branch 3 not taken.	2907	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 2907 times.	2907	if (!(res = av_malloc(size + 1)))
1070		✗	return AVERROR(ENOMEM);
1071	1/2 ✗ Branch 1 not taken. ✓ Branch 2 taken 2907 times.	2907	if ((ret = avio_read(pb, (uint8_t *) res, size)) != size) {
1072		✗	av_free(res);
1073		✗	return ret < 0 ? ret : NEEDS_CHECKING;
1074			}
1075		2907	(res)[size] = '\0';
1076			}
1077		2907	av_free(*str);
1078		2907	*str = res;
1079
1080		2907	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		31229	static int ebml_read_binary(AVIOContext *pb, int length,
1088			int64_t pos, EbmlBin *bin)
1089			{
1090			int ret;
1091
1092		31229	ret = av_buffer_realloc(&bin->buf, length + AV_INPUT_BUFFER_PADDING_SIZE);
1093	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 31229 times.	31229	if (ret < 0)
1094		✗	return ret;
1095		31229	memset(bin->buf->data + length, 0, AV_INPUT_BUFFER_PADDING_SIZE);
1096
1097		31229	bin->data = bin->buf->data;
1098		31229	bin->size = length;
1099		31229	bin->pos = pos;
1100	2/2 ✓ Branch 1 taken 10 times. ✓ Branch 2 taken 31219 times.	31229	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		31219	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		8563	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 8563 times.	8563	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		8563	level = &matroska->levels[matroska->num_levels++];
1127		8563	level->start = pos;
1128		8563	level->length = length;
1129
1130		8563	return 0;
1131			}
1132
1133			/*
1134			* Read a signed "EBML number"
1135			* Return: number of bytes processed, < 0 on error
1136			*/
1137		294	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 294 times.	294	if ((res = ebml_read_num(matroska, pb, 8, &unum, 1)) < 0)
1145		✗	return res;
1146
1147			/* make signed (weird way) */
1148		294	*num = unum - ((1LL << (7 * res - 1)) - 1);
1149
1150		294	return res;
1151			}
1152
1153			static int ebml_parse(MatroskaDemuxContext *matroska,
1154			EbmlSyntax *syntax, void *data);
1155
1156		60916	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 133692 times. ✓ Branch 1 taken 960 times.	134652	for (i = 0; syntax[i].id; i++)
1163	2/2 ✓ Branch 0 taken 59956 times. ✓ Branch 1 taken 73736 times.	133692	if (id == syntax[i].id)
1164		59956	break;
1165
1166		60916	return &syntax[i];
1167			}
1168
1169		8563	static int ebml_parse_nest(MatroskaDemuxContext *matroska, EbmlSyntax *syntax,
1170			void *data)
1171			{
1172			int res;
1173
1174	1/2 ✓ Branch 0 taken 8563 times. ✗ Branch 1 not taken.	8563	if (data) {
1175	2/2 ✓ Branch 0 taken 53982 times. ✓ Branch 1 taken 8563 times.	62545	for (int i = 0; syntax[i].id; i++) {
1176		53982	void *dst = (char *)data + syntax[i].data_offset;
1177	5/5 ✓ Branch 0 taken 23333 times. ✓ Branch 1 taken 974 times. ✓ Branch 2 taken 1638 times. ✓ Branch 3 taken 4733 times. ✓ Branch 4 taken 23304 times.	53982	switch (syntax[i].type) {
1178		23333	case EBML_UINT:
1179		23333	*(uint64_t *)dst = syntax[i].def.u;
1180		23333	break;
1181		974	case EBML_SINT:
1182		974	*(int64_t *) dst = syntax[i].def.i;
1183		974	break;
1184		1638	case EBML_FLOAT:
1185		1638	*(double *) dst = syntax[i].def.f;
1186		1638	break;
1187		4733	case EBML_STR:
1188			case EBML_UTF8:
1189			// the default may be NULL
1190	2/2 ✓ Branch 0 taken 1450 times. ✓ Branch 1 taken 3283 times.	4733	if (syntax[i].def.s) {
1191		1450	*(char**)dst = av_strdup(syntax[i].def.s);
1192	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 1450 times.	1450	if (!*(char**)dst)
1193		✗	return AVERROR(ENOMEM);
1194			}
1195		4733	break;
1196			}
1197			}
1198
1199	2/2 ✓ Branch 0 taken 47 times. ✓ Branch 1 taken 8516 times.	8563	if (!matroska->levels[matroska->num_levels - 1].length) {
1200		47	matroska->num_levels--;
1201		47	return 0;
1202			}
1203			}
1204
1205			do {
1206		27195	res = ebml_parse(matroska, syntax, data);
1207	2/2 ✓ Branch 0 taken 18679 times. ✓ Branch 1 taken 8516 times.	27195	} while (!res);
1208
1209	2/2 ✓ Branch 0 taken 1217 times. ✓ Branch 1 taken 7299 times.	8516	return res == LEVEL_ENDED ? 0 : res;
1210			}
1211
1212		2671	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		2671	unsigned int bits = av_log2(id);
1218	2/4 ✓ Branch 0 taken 2671 times. ✗ Branch 1 not taken. ✓ Branch 2 taken 2671 times. ✗ Branch 3 not taken.	2671	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		2671	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 2671 times.	2671	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 2646 times.	2671	if (id == MATROSKA_ID_CLUSTER)
1236		25	return NULL;
1237
1238			// There can be multiple SeekHeads and Tags.
1239	2/2 ✓ Branch 0 taken 5731 times. ✓ Branch 1 taken 1698 times.	7429	for (i = 0; i < matroska->num_level1_elems; i++) {
1240	2/2 ✓ Branch 0 taken 976 times. ✓ Branch 1 taken 4755 times.	5731	if (matroska->level1_elems[i].id == id) {
1241	3/4 ✓ Branch 0 taken 28 times. ✓ Branch 1 taken 948 times. ✗ Branch 2 not taken. ✓ Branch 3 taken 28 times.	976	if (matroska->level1_elems[i].pos == pos ||
1242		✗	id != MATROSKA_ID_SEEKHEAD && id != MATROSKA_ID_TAGS)
1243		948	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 1698 times.	1698	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		1698	elem = &matroska->level1_elems[matroska->num_level1_elems++];
1254		1698	*elem = (MatroskaLevel1Element){.id = id};
1255
1256		1698	return elem;
1257			}
1258
1259		60927	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		60927	AVIOContext *pb = matroska->ctx->pb;
1276			uint32_t id;
1277			uint64_t length;
1278		60927	int64_t pos = avio_tell(pb), pos_alt;
1279		60927	int res, update_pos = 1, level_check;
1280			MatroskaLevel1Element *level1_elem;
1281	2/2 ✓ Branch 0 taken 60139 times. ✓ Branch 1 taken 788 times.	60927	MatroskaLevel *level = matroska->num_levels ? &matroska->levels[matroska->num_levels - 1] : NULL;
1282
1283	2/2 ✓ Branch 0 taken 58896 times. ✓ Branch 1 taken 2031 times.	60927	if (!matroska->current_id) {
1284			uint64_t id64;
1285		58896	res = ebml_read_num(matroska, pb, 4, &id64, 0);
1286	2/2 ✓ Branch 0 taken 14 times. ✓ Branch 1 taken 58882 times.	58896	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		58882	matroska->current_id = id64 | 1 << 7 * res;
1305		58882	pos_alt = pos + res;
1306			} else {
1307		2031	pos_alt = pos;
1308		2031	pos -= (av_log2(matroska->current_id) + 7) / 8;
1309			}
1310
1311		60913	id = matroska->current_id;
1312
1313		60913	syntax = ebml_parse_id(syntax, id);
1314	6/6 ✓ Branch 0 taken 960 times. ✓ Branch 1 taken 59953 times. ✓ Branch 2 taken 662 times. ✓ Branch 3 taken 298 times. ✓ Branch 4 taken 162 times. ✓ Branch 5 taken 500 times.	60913	if (!syntax->id && id != EBML_ID_VOID && id != EBML_ID_CRC32) {
1315	3/4 ✓ Branch 0 taken 162 times. ✗ Branch 1 not taken. ✓ Branch 2 taken 7 times. ✓ Branch 3 taken 155 times.	162	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		159	av_log(matroska->ctx, AV_LOG_DEBUG, "Unknown entry 0x%"PRIX32" at pos. "
1330			"%"PRId64"\n", id, pos);
1331		159	update_pos = 0; /* Don't update resync_pos as an error might have happened. */
1332			}
1333
1334	2/2 ✓ Branch 0 taken 59688 times. ✓ Branch 1 taken 1222 times.	60910	if (data) {
1335		59688	data = (char *) data + syntax->data_offset;
1336	2/2 ✓ Branch 0 taken 4135 times. ✓ Branch 1 taken 55553 times.	59688	if (syntax->list_elem_size) {
1337		4135	EbmlList *list = data;
1338			void *newelem;
1339
1340	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 4135 times.	4135	if ((unsigned)list->nb_elem + 1 >= UINT_MAX / syntax->list_elem_size)
1341		✗	return AVERROR(ENOMEM);
1342	2/2 ✓ Branch 0 taken 469 times. ✓ Branch 1 taken 3666 times.	4135	if (syntax->id == MATROSKA_ID_TRACKENTRY &&
1343	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 469 times.	469	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		4135	newelem = av_fast_realloc(list->elem,
1350			&list->alloc_elem_size,
1351		4135	(list->nb_elem + 1) * syntax->list_elem_size);
1352	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 4135 times.	4135	if (!newelem)
1353		✗	return AVERROR(ENOMEM);
1354		4135	list->elem = newelem;
1355		4135	data = (char *) list->elem + list->nb_elem * syntax->list_elem_size;
1356		4135	memset(data, 0, syntax->list_elem_size);
1357		4135	list->nb_elem++;
1358			}
1359			}
1360
1361	2/2 ✓ Branch 0 taken 58874 times. ✓ Branch 1 taken 2036 times.	60910	if (syntax->type != EBML_STOP) {
1362		58874	matroska->current_id = 0;
1363	1/2 ✗ Branch 1 not taken. ✓ Branch 2 taken 58874 times.	58874	if ((res = ebml_read_length(matroska, pb, &length)) < 0)
1364		✗	return res;
1365
1366		58874	pos_alt += res;
1367
1368	2/2 ✓ Branch 0 taken 58086 times. ✓ Branch 1 taken 788 times.	58874	if (matroska->num_levels > 0) {
1369	2/2 ✓ Branch 0 taken 58080 times. ✓ Branch 1 taken 6 times.	58086	if (length != EBML_UNKNOWN_LENGTH &&
1370	2/2 ✓ Branch 0 taken 57942 times. ✓ Branch 1 taken 138 times.	116022	level->length != EBML_UNKNOWN_LENGTH) {
1371		57942	uint64_t elem_end = pos_alt + length,
1372		57942	level_end = level->start + level->length;
1373
1374	2/2 ✓ Branch 0 taken 49575 times. ✓ Branch 1 taken 8367 times.	57942	if (elem_end < level_end) {
1375		49575	level_check = 0;
1376	1/2 ✓ Branch 0 taken 8367 times. ✗ Branch 1 not taken.	8367	} else if (elem_end == level_end) {
1377		8367	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		788	level_check = 0;
1407
1408	4/4 ✓ Branch 0 taken 49931 times. ✓ Branch 1 taken 8943 times. ✓ Branch 2 taken 2 times. ✓ Branch 3 taken 49929 times.	58874	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 58753 times.	58872	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 58715 times. ✓ Branch 1 taken 157 times.	58872	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		58715	matroska->resync_pos = pos;
1475			}
1476
1477	3/4 ✓ Branch 0 taken 397 times. ✓ Branch 1 taken 58475 times. ✓ Branch 2 taken 397 times. ✗ Branch 3 not taken.	58872	if (!data && length != EBML_UNKNOWN_LENGTH)
1478		397	goto skip;
1479			}
1480
1481	8/8 ✓ Branch 0 taken 11590 times. ✓ Branch 1 taken 188 times. ✓ Branch 2 taken 899 times. ✓ Branch 3 taken 2907 times. ✓ Branch 4 taken 31229 times. ✓ Branch 5 taken 8563 times. ✓ Branch 6 taken 2036 times. ✓ Branch 7 taken 3099 times.	60511	switch (syntax->type) {
1482		11590	case EBML_UINT:
1483		11590	res = ebml_read_uint(pb, length, syntax->def.u, data);
1484		11590	break;
1485		188	case EBML_SINT:
1486		188	res = ebml_read_sint(pb, length, syntax->def.i, data);
1487		188	break;
1488		899	case EBML_FLOAT:
1489		899	res = ebml_read_float(pb, length, syntax->def.f, data);
1490		899	break;
1491		2907	case EBML_STR:
1492			case EBML_UTF8:
1493		2907	res = ebml_read_ascii(pb, length, syntax->def.s, data);
1494		2907	break;
1495		31229	case EBML_BIN:
1496		31229	res = ebml_read_binary(pb, length, pos_alt, data);
1497		31229	break;
1498		8563	case EBML_LEVEL1:
1499			case EBML_NEST:
1500	1/2 ✗ Branch 1 not taken. ✓ Branch 2 taken 8563 times.	8563	if ((res = ebml_read_master(matroska, length, pos_alt)) < 0)
1501		✗	return res;
1502	2/2 ✓ Branch 0 taken 394 times. ✓ Branch 1 taken 8169 times.	8563	if (id == MATROSKA_ID_SEGMENT)
1503		394	matroska->segment_start = pos_alt;
1504	2/2 ✓ Branch 0 taken 20 times. ✓ Branch 1 taken 8543 times.	8563	if (id == MATROSKA_ID_CUES)
1505		20	matroska->cues_parsing_deferred = 0;
1506	3/4 ✓ Branch 0 taken 1357 times. ✓ Branch 1 taken 7206 times. ✓ Branch 2 taken 1357 times. ✗ Branch 3 not taken.	9920	if (syntax->type == EBML_LEVEL1 &&
1507		1357	(level1_elem = matroska_find_level1_elem(matroska, syntax->id, pos))) {
1508	2/2 ✓ Branch 0 taken 1307 times. ✓ Branch 1 taken 50 times.	1357	if (!level1_elem->pos) {
1509			// Zero is not a valid position for a level 1 element.
1510		1307	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		1357	level1_elem->parsed = 1;
1514			}
1515	2/2 ✓ Branch 1 taken 1217 times. ✓ Branch 2 taken 7346 times.	8563	if (res = ebml_parse_nest(matroska, syntax->def.n, data))
1516		1217	return res;
1517		7346	break;
1518		2036	case EBML_STOP:
1519		2036	return 1;
1520		397	skip:
1521		3496	default:
1522	2/2 ✓ Branch 0 taken 3494 times. ✓ Branch 1 taken 2 times.	3496	if (length) {
1523			int64_t res2;
1524	1/2 ✗ Branch 1 not taken. ✓ Branch 2 taken 3494 times.	3494	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 3494 times. ✗ Branch 2 not taken.	3494	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		3494	avio_r8(pb);
1536		3494	res = NEEDS_CHECKING;
1537			} else
1538		✗	res = res2;
1539			} else
1540		2	res = 0;
1541			}
1542	2/2 ✓ Branch 0 taken 16181 times. ✓ Branch 1 taken 41474 times.	57655	if (res) {
1543	1/2 ✓ Branch 0 taken 16181 times. ✗ Branch 1 not taken.	16181	if (res == NEEDS_CHECKING) {
1544	2/2 ✓ Branch 0 taken 10 times. ✓ Branch 1 taken 16171 times.	16181	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		16171	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		41474	level_check:
1566	3/4 ✓ Branch 0 taken 154 times. ✓ Branch 1 taken 57491 times. ✓ Branch 2 taken 154 times. ✗ Branch 3 not taken.	57645	if (syntax->is_counted && data) {
1567		154	CountedElement *elem = data;
1568	1/2 ✓ Branch 0 taken 154 times. ✗ Branch 1 not taken.	154	if (elem->count != UINT_MAX)
1569		154	elem->count++;
1570			}
1571
1572	4/4 ✓ Branch 0 taken 8302 times. ✓ Branch 1 taken 49343 times. ✓ Branch 2 taken 8272 times. ✓ Branch 3 taken 30 times.	57645	if (level_check == LEVEL_ENDED && matroska->num_levels) {
1573		8272	level = &matroska->levels[matroska->num_levels - 1];
1574		8272	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 15847 times. ✓ Branch 1 taken 775 times. ✓ Branch 2 taken 8350 times. ✓ Branch 3 taken 7497 times.	16622	while (matroska->num_levels && pos == level->start + level->length) {
1579		8350	matroska->num_levels--;
1580		8350	level--;
1581			}
1582			}
1583
1584		57645	return level_check;
1585			}
1586
1587		73357	static void ebml_free(EbmlSyntax *syntax, void *data)
1588			{
1589			int i, j;
1590	2/2 ✓ Branch 0 taken 304925 times. ✓ Branch 1 taken 73357 times.	378282	for (i = 0; syntax[i].id; i++) {
1591		304925	void *data_off = (char *) data + syntax[i].data_offset;
1592	4/4 ✓ Branch 0 taken 4707 times. ✓ Branch 1 taken 32845 times. ✓ Branch 2 taken 74052 times. ✓ Branch 3 taken 193321 times.	304925	switch (syntax[i].type) {
1593		4707	case EBML_STR:
1594			case EBML_UTF8:
1595		4707	av_freep(data_off);
1596		4707	break;
1597		32845	case EBML_BIN:
1598		32845	av_buffer_unref(&((EbmlBin *) data_off)->buf);
1599		32845	break;
1600		74052	case EBML_LEVEL1:
1601			case EBML_NEST:
1602	2/2 ✓ Branch 0 taken 36458 times. ✓ Branch 1 taken 37594 times.	74052	if (syntax[i].list_elem_size) {
1603		36458	EbmlList *list = data_off;
1604		36458	char *ptr = list->elem;
1605	2/2 ✓ Branch 0 taken 4135 times. ✓ Branch 1 taken 36458 times.	40593	for (j = 0; j < list->nb_elem;
1606		4135	j++, ptr += syntax[i].list_elem_size)
1607		4135	ebml_free(syntax[i].def.n, ptr);
1608		36458	av_freep(&list->elem);
1609		36458	list->nb_elem = 0;
1610		36458	list->alloc_elem_size = 0;
1611			} else
1612		37594	ebml_free(syntax[i].def.n, data_off);
1613		74052	break;
1614		193321	default:
1615		193321	break;
1616			}
1617			}
1618		73357	}
1619
1620			/*
1621			* Autodetecting...
1622			*/
1623		7778	static int matroska_probe(const AVProbeData *p)
1624			{
1625		7778	uint64_t total = 0;
1626		7778	int len_mask = 0x80, size = 1, n = 1, i;
1627
1628			/* EBML header? */
1629	2/2 ✓ Branch 0 taken 7418 times. ✓ Branch 1 taken 360 times.	7778	if (AV_RB32(p->buf) != EBML_ID_HEADER)
1630		7418	return 0;
1631
1632			/* length of header */
1633		360	total = p->buf[4];
1634	3/4 ✓ Branch 0 taken 2096 times. ✗ Branch 1 not taken. ✓ Branch 2 taken 1736 times. ✓ Branch 3 taken 360 times.	2096	while (size <= 8 && !(total & len_mask)) {
1635		1736	size++;
1636		1736	len_mask >>= 1;
1637			}
1638	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 360 times.	360	if (size > 8)
1639		✗	return 0;
1640		360	total &= (len_mask - 1);
1641	2/2 ✓ Branch 0 taken 1736 times. ✓ Branch 1 taken 360 times.	2096	while (n < size)
1642		1736	total = (total << 8) | p->buf[4 + n++];
1643
1644	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 360 times.	360	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 360 times.	360	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 611 times. ✗ Branch 1 not taken.	611	for (i = 0; i < FF_ARRAY_ELEMS(matroska_doctypes); i++) {
1658		611	size_t probelen = strlen(matroska_doctypes[i]);
1659	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 611 times.	611	if (total < probelen)
1660		✗	continue;
1661	2/2 ✓ Branch 0 taken 13182 times. ✓ Branch 1 taken 251 times.	13433	for (n = 4 + size; n <= 4 + size + total - probelen; n++)
1662	2/2 ✓ Branch 0 taken 360 times. ✓ Branch 1 taken 12822 times.	13182	if (!memcmp(p->buf + n, matroska_doctypes[i], probelen))
1663		360	return AVPROBE_SCORE_MAX;
1664			}
1665
1666			// probably valid EBML header but no recognized doctype
1667		✗	return AVPROBE_SCORE_EXTENSION;
1668			}
1669
1670		31481	static MatroskaTrack *matroska_find_track_by_num(MatroskaDemuxContext *matroska,
1671			uint64_t num)
1672			{
1673		31481	MatroskaTrack *tracks = matroska->tracks.elem;
1674			int i;
1675
1676	2/2 ✓ Branch 0 taken 34579 times. ✓ Branch 1 taken 1 times.	34580	for (i = 0; i < matroska->tracks.nb_elem; i++)
1677	2/2 ✓ Branch 0 taken 31480 times. ✓ Branch 1 taken 3099 times.	34579	if (tracks[i].num == num)
1678		31480	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		251	static void matroska_convert_tag(AVFormatContext *s, EbmlList *list,
1823			AVDictionary **metadata, char *prefix)
1824			{
1825		251	MatroskaTag *tags = list->elem;
1826			char key[1024];
1827			int i;
1828
1829	2/2 ✓ Branch 0 taken 587 times. ✓ Branch 1 taken 251 times.	838	for (i = 0; i < list->nb_elem; i++) {
1830		1761	const char *lang = tags[i].lang &&
1831	3/4 ✓ Branch 0 taken 587 times. ✗ Branch 1 not taken. ✓ Branch 2 taken 115 times. ✓ Branch 3 taken 472 times.	587	strcmp(tags[i].lang, "und") ? tags[i].lang : NULL;
1832
1833	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 587 times.	587	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 587 times.	587	if (prefix)
1838		✗	snprintf(key, sizeof(key), "%s/%s", prefix, tags[i].name);
1839			else
1840		587	av_strlcpy(key, tags[i].name, sizeof(key));
1841	3/4 ✓ Branch 0 taken 587 times. ✗ Branch 1 not taken. ✓ Branch 2 taken 472 times. ✓ Branch 3 taken 115 times.	587	if (tags[i].def || !lang) {
1842		472	av_dict_set(metadata, key, tags[i].string, 0);
1843	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 472 times.	472	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 472 times.	587	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		251	ff_metadata_conv(metadata, NULL, ff_mkv_metadata_conv);
1855		251	}
1856
1857		394	static void matroska_convert_tags(AVFormatContext *s)
1858			{
1859		394	MatroskaDemuxContext *matroska = s->priv_data;
1860		394	MatroskaTags *tags = matroska->tags.elem;
1861			int i, j;
1862
1863	2/2 ✓ Branch 0 taken 251 times. ✓ Branch 1 taken 394 times.	645	for (i = 0; i < matroska->tags.nb_elem; i++) {
1864	2/2 ✓ Branch 0 taken 13 times. ✓ Branch 1 taken 238 times.	251	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 225 times.	238	} 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 168 times. ✓ Branch 1 taken 57 times.	225	} else if (tags[i].target.trackuid) {
1899		168	MatroskaTrack *track = matroska->tracks.elem;
1900		168	int found = 0;
1901	2/2 ✓ Branch 0 taken 416 times. ✓ Branch 1 taken 168 times.	584	for (j = 0; j < matroska->tracks.nb_elem; j++) {
1902	2/2 ✓ Branch 0 taken 168 times. ✓ Branch 1 taken 248 times.	416	if (track[j].uid == tags[i].target.trackuid &&
1903	1/2 ✓ Branch 0 taken 168 times. ✗ Branch 1 not taken.	168	track[j].stream) {
1904		168	matroska_convert_tag(s, &tags[i].tag,
1905		168	&track[j].stream->metadata, NULL);
1906		168	found = 1;
1907			}
1908			}
1909	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 168 times.	168	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		57	matroska_convert_tag(s, &tags[i].tag, &s->metadata,
1917		57	tags[i].target.type);
1918			}
1919			}
1920		394	}
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		394	static void matroska_execute_seekhead(MatroskaDemuxContext *matroska)
1961			{
1962		394	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 393 times.	394	if (!(matroska->ctx->pb->seekable & AVIO_SEEKABLE_NORMAL))
1967		1	return;
1968
1969	2/2 ✓ Branch 0 taken 1314 times. ✓ Branch 1 taken 392 times.	1706	for (i = 0; i < seekhead_list->nb_elem; i++) {
1970		1314	MatroskaSeekhead *seekheads = seekhead_list->elem;
1971		1314	uint32_t id = seekheads[i].id;
1972		1314	int64_t pos = seekheads[i].pos + matroska->segment_start;
1973			MatroskaLevel1Element *elem;
1974
1975	2/4 ✓ Branch 0 taken 1314 times. ✗ Branch 1 not taken. ✗ Branch 2 not taken. ✓ Branch 3 taken 1314 times.	1314	if (id != seekheads[i].id || pos < matroska->segment_start)
1976		✗	continue;
1977
1978		1314	elem = matroska_find_level1_elem(matroska, id, pos);
1979	4/4 ✓ Branch 0 taken 1289 times. ✓ Branch 1 taken 25 times. ✓ Branch 2 taken 898 times. ✓ Branch 3 taken 391 times.	1314	if (!elem || elem->parsed)
1980		923	continue;
1981
1982		391	elem->pos = pos;
1983
1984			// defer cues parsing until we actually need cue data.
1985	2/2 ✓ Branch 0 taken 351 times. ✓ Branch 1 taken 40 times.	391	if (id == MATROSKA_ID_CUES)
1986		351	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		407	static void matroska_add_index_entries(MatroskaDemuxContext *matroska)
1999			{
2000			EbmlList *index_list;
2001			MatroskaIndex *index;
2002		407	uint64_t index_scale = 1;
2003			int i, j;
2004
2005	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 407 times.	407	if (matroska->ctx->flags & AVFMT_FLAG_IGNIDX)
2006		✗	return;
2007
2008		407	index_list = &matroska->index;
2009		407	index = index_list->elem;
2010	2/2 ✓ Branch 0 taken 389 times. ✓ Branch 1 taken 18 times.	407	if (index_list->nb_elem < 2)
2011		389	return;
2012	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 18 times.	18	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 538 times. ✓ Branch 1 taken 18 times.	556	for (i = 0; i < index_list->nb_elem; i++) {
2017		538	EbmlList *pos_list = &index[i].pos;
2018		538	MatroskaIndexPos *pos = pos_list->elem;
2019	2/2 ✓ Branch 0 taken 656 times. ✓ Branch 1 taken 538 times.	1194	for (j = 0; j < pos_list->nb_elem; j++) {
2020		656	MatroskaTrack *track = matroska_find_track_by_num(matroska,
2021		656	pos[j].track);
2022	2/4 ✓ Branch 0 taken 656 times. ✗ Branch 1 not taken. ✓ Branch 2 taken 656 times. ✗ Branch 3 not taken.	656	if (track && track->stream)
2023		656	av_add_index_entry(track->stream,
2024		656	pos[j].pos + matroska->segment_start,
2025		656	index[i].time / index_scale, 0, 0,
2026			AVINDEX_KEYFRAME);
2027			}
2028			}
2029			}
2030
2031		13	static void matroska_parse_cues(MatroskaDemuxContext *matroska) {
2032			int i;
2033
2034	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 13 times.	13	if (matroska->ctx->flags & AVFMT_FLAG_IGNIDX)
2035		✗	return;
2036
2037	2/2 ✓ Branch 0 taken 53 times. ✓ Branch 1 taken 1 times.	54	for (i = 0; i < matroska->num_level1_elems; i++) {
2038		53	MatroskaLevel1Element *elem = &matroska->level1_elems[i];
2039	3/4 ✓ Branch 0 taken 12 times. ✓ Branch 1 taken 41 times. ✓ Branch 2 taken 12 times. ✗ Branch 3 not taken.	53	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		13	matroska_add_index_entries(matroska);
2048			}
2049
2050		469	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 469 times.	469	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 457 times. ✓ Branch 1 taken 12 times.	469	if (!nb_encodings)
2061		457	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		36	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		36	ff_dict_set_timestamp(metadata, "creation_time", date_utc / 1000 + 978307200000000LL);
2149		36	}
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		12	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 4 times. ✓ Branch 2 taken 4 times. ✓ Branch 3 taken 4 times.	12	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		4	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		4	*h_width = 2;
2248		4	break;
2249		4	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		4	*h_height = 2;
2254		4	break;
2255			}
2256		12	}
2257
2258		236	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		236	stereo = av_stereo3d_alloc_size(&size);
2273	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 236 times.	236	if (!stereo)
2274		✗	return AVERROR(ENOMEM);
2275
2276		236	stereo->type = stereo_mode_conv[stereo_mode].type;
2277		236	stereo->flags = stereo_mode_conv[stereo_mode].flags;
2278
2279	1/2 ✗ Branch 1 not taken. ✓ Branch 2 taken 236 times.	236	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		236	return 0;
2286			}
2287
2288		360	static int mkv_parse_video_color(AVStream *st, const MatroskaTrack *track) {
2289		360	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 275 times. ✓ Branch 1 taken 85 times.	360	if (!track->video.color.nb_elem)
2294		275	return 0;
2295
2296		85	mastering_meta = &color->mastering_meta;
2297			// Mastering primaries are CIE 1931 coords, and must be > 0.
2298		85	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 68 times. ✓ Branch 2 taken 17 times. ✗ Branch 3 not taken. ✓ Branch 4 taken 17 times. ✗ Branch 5 not taken.	102	mastering_meta->white_x > 0 && mastering_meta->white_y > 0;
2303		170	has_mastering_luminance = mastering_meta->max_luminance >
2304		102	mastering_meta->min_luminance.el.f &&
2305	3/4 ✓ Branch 0 taken 17 times. ✓ Branch 1 taken 68 times. ✓ Branch 2 taken 17 times. ✗ Branch 3 not taken.	102	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 85 times. ✗ Branch 1 not taken.	85	if (color->matrix_coefficients != AVCOL_SPC_RESERVED)
2309		85	st->codecpar->color_space = color->matrix_coefficients;
2310	1/2 ✓ Branch 0 taken 85 times. ✗ Branch 1 not taken.	85	if (color->primaries != AVCOL_PRI_RESERVED &&
2311	2/2 ✓ Branch 0 taken 83 times. ✓ Branch 1 taken 2 times.	85	color->primaries != AVCOL_PRI_RESERVED0)
2312		83	st->codecpar->color_primaries = color->primaries;
2313	1/2 ✓ Branch 0 taken 85 times. ✗ Branch 1 not taken.	85	if (color->transfer_characteristics != AVCOL_TRC_RESERVED &&
2314	2/2 ✓ Branch 0 taken 83 times. ✓ Branch 1 taken 2 times.	85	color->transfer_characteristics != AVCOL_TRC_RESERVED0)
2315		83	st->codecpar->color_trc = color->transfer_characteristics;
2316	2/2 ✓ Branch 0 taken 58 times. ✓ Branch 1 taken 27 times.	85	if (color->range != AVCOL_RANGE_UNSPECIFIED &&
2317	1/2 ✓ Branch 0 taken 58 times. ✗ Branch 1 not taken.	58	color->range <= AVCOL_RANGE_JPEG)
2318		58	st->codecpar->color_range = color->range;
2319	2/2 ✓ Branch 0 taken 47 times. ✓ Branch 1 taken 38 times.	85	if (color->chroma_siting_horz != MATROSKA_COLOUR_CHROMASITINGHORZ_UNDETERMINED &&
2320	1/2 ✓ Branch 0 taken 47 times. ✗ Branch 1 not taken.	47	color->chroma_siting_vert != MATROSKA_COLOUR_CHROMASITINGVERT_UNDETERMINED &&
2321	1/2 ✓ Branch 0 taken 47 times. ✗ Branch 1 not taken.	47	color->chroma_siting_horz < MATROSKA_COLOUR_CHROMASITINGHORZ_NB &&
2322	1/2 ✓ Branch 0 taken 47 times. ✗ Branch 1 not taken.	47	color->chroma_siting_vert < MATROSKA_COLOUR_CHROMASITINGVERT_NB) {
2323		47	st->codecpar->chroma_location =
2324		47	av_chroma_location_pos_to_enum((color->chroma_siting_horz - 1) << 7,
2325		47	(color->chroma_siting_vert - 1) << 7);
2326			}
2327	3/4 ✓ Branch 0 taken 17 times. ✓ Branch 1 taken 68 times. ✓ Branch 2 taken 17 times. ✗ Branch 3 not taken.	85	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 68 times. ✓ Branch 1 taken 17 times. ✗ Branch 2 not taken. ✓ Branch 3 taken 68 times.	85	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		85	return 0;
2369			}
2370
2371		354	static int mkv_create_display_matrix(AVStream *st,
2372			const MatroskaTrackVideoProjection *proj,
2373			void *logctx)
2374			{
2375			AVPacketSideData *sd;
2376		354	double pitch = proj->pitch, yaw = proj->yaw, roll = proj->roll;
2377			int32_t *matrix;
2378			int hflip;
2379
2380	5/6 ✓ Branch 0 taken 354 times. ✗ Branch 1 not taken. ✓ Branch 2 taken 337 times. ✓ Branch 3 taken 17 times. ✓ Branch 4 taken 335 times. ✓ Branch 5 taken 2 times.	354	if (pitch == 0.0 && yaw == 0.0 && roll == 0.0)
2381		335	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		360	static int mkv_parse_video_projection(AVStream *st, const MatroskaTrack *track,
2414			void *logctx)
2415			{
2416			AVSphericalMapping *spherical;
2417		360	const MatroskaTrackVideoProjection *mkv_projection = &track->video.projection;
2418		360	const uint8_t *priv_data = mkv_projection->private.data;
2419			enum AVSphericalProjection projection;
2420			size_t spherical_size;
2421		360	uint32_t l = 0, t = 0, r = 0, b = 0;
2422		360	uint32_t padding = 0;
2423
2424	3/4 ✓ Branch 0 taken 6 times. ✓ Branch 1 taken 354 times. ✗ Branch 2 not taken. ✓ Branch 3 taken 6 times.	360	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 354 times. ✓ Branch 1 taken 6 times. ✗ Branch 2 not taken. ✗ Branch 3 not taken.	360	switch (track->video.projection.type) {
2430		354	case MATROSKA_VIDEO_PROJECTION_TYPE_RECTANGULAR:
2431		354	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		469	static int mkv_parse_block_addition_mappings(AVFormatContext *s, AVStream *st, MatroskaTrack *track)
2534			{
2535		469	const EbmlList *mappings_list = &track->block_addition_mappings;
2536		469	MatroskaBlockAdditionMapping *mappings = mappings_list->elem;
2537			int ret;
2538
2539	2/2 ✓ Branch 0 taken 30 times. ✓ Branch 1 taken 469 times.	499	for (int i = 0; i < mappings_list->nb_elem; i++) {
2540		30	MatroskaBlockAdditionMapping *mapping = &mappings[i];
2541		30	uint64_t type = mapping->type;
2542
2543	3/5 ✗ Branch 0 not taken. ✓ Branch 1 taken 4 times. ✓ Branch 2 taken 15 times. ✓ Branch 3 taken 11 times. ✗ Branch 4 not taken.	30	switch (mapping->type) {
2544		✗	case MATROSKA_BLOCK_ADD_ID_TYPE_DEFAULT:
2545		✗	av_log(s, AV_LOG_DEBUG,
2546			"Explicit block Addition Mapping type \"Use BlockAddIDValue\", value %"PRIu64","
2547		✗	" name \"%s\" found.\n", mapping->value, mapping->name ? mapping->name : "");
2548		✗	type = MATROSKA_BLOCK_ADD_ID_TYPE_OPAQUE;
2549			av_fallthrough;
2550		4	case MATROSKA_BLOCK_ADD_ID_TYPE_OPAQUE:
2551			case MATROSKA_BLOCK_ADD_ID_TYPE_ITU_T_T35:
2552	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 4 times.	4	if (mapping->value != type) {
2553		✗	int strict = s->strict_std_compliance >= FF_COMPLIANCE_STRICT;
2554		✗	av_log(s, strict ? AV_LOG_ERROR : AV_LOG_WARNING,
2555			"Invalid Block Addition Value 0x%"PRIx64" for Block Addition Mapping Type "
2556			"0x%"PRIx64", name \"%s\"\n", mapping->value, mapping->type,
2557		✗	mapping->name ? mapping->name : "");
2558		✗	if (strict)
2559		✗	return AVERROR_INVALIDDATA;
2560			}
2561		4	break;
2562		15	case MATROSKA_BLOCK_ADD_ID_TYPE_DVCC:
2563			case MATROSKA_BLOCK_ADD_ID_TYPE_DVVC:
2564	1/2 ✗ Branch 1 not taken. ✓ Branch 2 taken 15 times.	15	if ((ret = mkv_parse_dvcc_dvvc(s, st, track, &mapping->extradata)) < 0)
2565		✗	return ret;
2566
2567		15	break;
2568		11	case MATROSKA_BLOCK_ADD_ID_TYPE_HVCE:
2569	1/2 ✗ Branch 1 not taken. ✓ Branch 2 taken 11 times.	11	if ((ret = mkv_parse_hvce(s, st, &mapping->extradata)) < 0)
2570		✗	return ret;
2571
2572		11	break;
2573		✗	default:
2574		✗	av_log(s, AV_LOG_DEBUG,
2575			"Unknown Block Addition Mapping type 0x%"PRIx64", value %"PRIu64", name \"%s\"\n",
2576		✗	mapping->type, mapping->value, mapping->name ? mapping->name : "");
2577		✗	if (mapping->value < 2) {
2578		✗	int strict = s->strict_std_compliance >= FF_COMPLIANCE_STRICT;
2579		✗	av_log(s, strict ? AV_LOG_ERROR : AV_LOG_WARNING,
2580			"Invalid Block Addition value 0x%"PRIu64" for unknown Block Addition Mapping "
2581			"type %"PRIx64", name \"%s\"\n", mapping->value, mapping->type,
2582		✗	mapping->name ? mapping->name : "");
2583		✗	if (strict)
2584		✗	return AVERROR_INVALIDDATA;
2585			}
2586		✗	break;
2587			}
2588			}
2589
2590		469	return 0;
2591			}
2592
2593		1	static int get_qt_codec(MatroskaTrack *track, uint32_t *fourcc, enum AVCodecID *codec_id)
2594			{
2595			const AVCodecTag *codec_tags;
2596
2597		2	codec_tags = track->type == MATROSKA_TRACK_TYPE_VIDEO ?
2598	1/2 ✓ Branch 0 taken 1 times. ✗ Branch 1 not taken.	1	ff_codec_movvideo_tags : ff_codec_movaudio_tags;
2599
2600			/* Normalize noncompliant private data that starts with the fourcc
2601			* by expanding/shifting the data by 4 bytes and storing the data
2602			* size at the start. */
2603	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))) {
2604		✗	int ret = av_buffer_realloc(&track->codec_priv.buf,
2605		✗	track->codec_priv.size + 4 + AV_INPUT_BUFFER_PADDING_SIZE);
2606		✗	if (ret < 0)
2607		✗	return ret;
2608
2609		✗	track->codec_priv.data = track->codec_priv.buf->data;
2610		✗	memmove(track->codec_priv.data + 4, track->codec_priv.data, track->codec_priv.size);
2611		✗	track->codec_priv.size += 4;
2612		✗	AV_WB32(track->codec_priv.data, track->codec_priv.size);
2613			}
2614
2615		1	*fourcc = AV_RL32(track->codec_priv.data + 4);
2616		1	*codec_id = ff_codec_get_id(codec_tags, *fourcc);
2617
2618		1	return 0;
2619			}
2620
2621			/* An enum with potential return values of the functions for parsing a track.
2622			* Apart from that all these functions can also indicate ordinary errors via
2623			* negative return values. */
2624			enum {
2625			SKIP_TRACK = 1,
2626			};
2627
2628			#define AAC_MAX_EXTRADATA_SIZE 5
2629			#define TTA_EXTRADATA_SIZE 22
2630			#define WAVPACK_EXTRADATA_SIZE 2
2631			/* Performs the codec-specific part of parsing an audio track. */
2632		85	static int mka_parse_audio_codec(MatroskaTrack *track, AVCodecParameters *par,
2633			const MatroskaDemuxContext *matroska,
2634			AVFormatContext *s, int *extradata_offset)
2635			{
2636			uint8_t extradata[FFMAX3(AAC_MAX_EXTRADATA_SIZE,
2637			TTA_EXTRADATA_SIZE,
2638			WAVPACK_EXTRADATA_SIZE)];
2639		85	int extradata_size = 0; // > 0 means that the extradata buffer is used
2640			int ret;
2641
2642	2/2 ✓ Branch 0 taken 1 times. ✓ Branch 1 taken 84 times.	85	if (!strcmp(track->codec_id, "A_MS/ACM") &&
2643	1/2 ✓ Branch 0 taken 1 times. ✗ Branch 1 not taken.	1	track->codec_priv.size >= 14) {
2644			FFIOContext b;
2645		1	ffio_init_read_context(&b, track->codec_priv.data,
2646			track->codec_priv.size);
2647		1	ret = ff_get_wav_header(s, &b.pub, par,
2648			track->codec_priv.size, 0);
2649	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 1 times.	1	if (ret < 0)
2650		✗	return ret;
2651		1	*extradata_offset = FFMIN(track->codec_priv.size, 18);
2652		1	return 0;
2653	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 84 times.	84	} else if (!strcmp(track->codec_id, "A_QUICKTIME") &&
2654			/* Normally 36, but allow noncompliant private data */
2655		✗	track->codec_priv.size >= 32) {
2656			enum AVCodecID codec_id;
2657			uint32_t fourcc;
2658			uint16_t sample_size;
2659
2660		✗	ret = get_qt_codec(track, &fourcc, &codec_id);
2661		✗	if (ret < 0)
2662		✗	return ret;
2663		✗	sample_size = AV_RB16(track->codec_priv.data + 26);
2664		✗	if (fourcc == 0) {
2665		✗	if (sample_size == 8) {
2666		✗	fourcc = MKTAG('r','a','w',' ');
2667		✗	codec_id = ff_codec_get_id(ff_codec_movaudio_tags, fourcc);
2668		✗	} else if (sample_size == 16) {
2669		✗	fourcc = MKTAG('t','w','o','s');
2670		✗	codec_id = ff_codec_get_id(ff_codec_movaudio_tags, fourcc);
2671			}
2672			}
2673		✗	if ((fourcc == MKTAG('t','w','o','s') ||
2674		✗	fourcc == MKTAG('s','o','w','t')) && sample_size == 8)
2675		✗	codec_id = AV_CODEC_ID_PCM_S8;
2676		✗	par->codec_id = codec_id;
2677		✗	par->codec_tag = fourcc;
2678		✗	return 0;
2679			}
2680
2681	9/12 ✓ Branch 0 taken 5 times. ✓ Branch 1 taken 7 times. ✗ Branch 2 not taken. ✓ Branch 3 taken 12 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 43 times.	84	switch (par->codec_id) {
2682		5	case AV_CODEC_ID_PCM_S16BE:
2683	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) {
2684		✗	case 8:
2685		✗	par->codec_id = AV_CODEC_ID_PCM_U8;
2686		✗	break;
2687		1	case 24:
2688		1	par->codec_id = AV_CODEC_ID_PCM_S24BE;
2689		1	break;
2690		2	case 32:
2691		2	par->codec_id = AV_CODEC_ID_PCM_S32BE;
2692		2	break;
2693			}
2694		5	break;
2695		7	case AV_CODEC_ID_PCM_S16LE:
2696	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) {
2697		1	case 8:
2698		1	par->codec_id = AV_CODEC_ID_PCM_U8;
2699		1	break;
2700		3	case 24:
2701		3	par->codec_id = AV_CODEC_ID_PCM_S24LE;
2702		3	break;
2703		2	case 32:
2704		2	par->codec_id = AV_CODEC_ID_PCM_S32LE;
2705		2	break;
2706			}
2707		7	break;
2708		✗	case AV_CODEC_ID_PCM_F32LE:
2709		✗	if (track->audio.bitdepth == 64)
2710		✗	par->codec_id = AV_CODEC_ID_PCM_F64LE;
2711		✗	break;
2712		12	case AV_CODEC_ID_AAC:
2713	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 12 times.	12	if (!track->codec_priv.size) {
2714		✗	int profile = matroska_aac_profile(track->codec_id);
2715		✗	int sri = matroska_aac_sri(track->audio.samplerate);
2716
2717		✗	extradata[0] = (profile << 3) | ((sri & 0x0E) >> 1);
2718		✗	extradata[1] = ((sri & 0x01) << 7) | (track->audio.channels << 3);
2719		✗	if (strstr(track->codec_id, "SBR")) {
2720		✗	sri = matroska_aac_sri(track->audio.out_samplerate);
2721		✗	extradata[2] = 0x56;
2722		✗	extradata[3] = 0xE5;
2723		✗	extradata[4] = 0x80 | (sri << 3);
2724		✗	extradata_size = 5;
2725			} else
2726		✗	extradata_size = 2;
2727			}
2728		12	break;
2729		2	case AV_CODEC_ID_ALAC:
2730	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) {
2731			/* Only ALAC's magic cookie is stored in Matroska's track headers.
2732			* Create the "atom size", "tag", and "tag version" fields the
2733			* decoder expects manually. */
2734		2	ret = ff_alloc_extradata(par, 12 + track->codec_priv.size);
2735	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 2 times.	2	if (ret < 0)
2736		✗	return ret;
2737		2	AV_WB32(par->extradata, par->extradata_size);
2738		2	AV_WB32(&par->extradata[4], MKBETAG('a', 'l', 'a', 'c'));
2739		2	AV_WB32(&par->extradata[8], 0);
2740		2	memcpy(&par->extradata[12], track->codec_priv.data,
2741		2	track->codec_priv.size);
2742			}
2743		2	break;
2744		3	case AV_CODEC_ID_TTA:
2745			{
2746			uint8_t *ptr;
2747	1/2 ✓ Branch 0 taken 3 times. ✗ Branch 1 not taken.	3	if (track->audio.channels > UINT16_MAX ||
2748	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 3 times.	3	track->audio.bitdepth > UINT16_MAX) {
2749		✗	av_log(matroska->ctx, AV_LOG_WARNING,
2750			"Too large audio channel number %"PRIu64
2751			" or bitdepth %"PRIu64". Skipping track.\n",
2752			track->audio.channels, track->audio.bitdepth);
2753		✗	if (matroska->ctx->error_recognition & AV_EF_EXPLODE)
2754		✗	return AVERROR_INVALIDDATA;
2755			else
2756		✗	return SKIP_TRACK;
2757			}
2758	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)
2759		✗	return AVERROR_INVALIDDATA;
2760		3	extradata_size = TTA_EXTRADATA_SIZE;
2761		3	ptr = extradata;
2762		3	bytestream_put_be32(&ptr, AV_RB32("TTA1"));
2763		3	bytestream_put_le16(&ptr, 1);
2764		3	bytestream_put_le16(&ptr, track->audio.channels);
2765		3	bytestream_put_le16(&ptr, track->audio.bitdepth);
2766		3	bytestream_put_le32(&ptr, track->audio.out_samplerate);
2767		3	bytestream_put_le32(&ptr, av_rescale(matroska->duration * matroska->time_scale,
2768		3	track->audio.out_samplerate,
2769			AV_TIME_BASE * 1000));
2770		3	break;
2771			}
2772		✗	case AV_CODEC_ID_RA_144:
2773		✗	track->audio.out_samplerate = 8000;
2774		✗	track->audio.channels = 1;
2775		✗	break;
2776		✗	case AV_CODEC_ID_RA_288:
2777			case AV_CODEC_ID_COOK:
2778			case AV_CODEC_ID_ATRAC3:
2779			case AV_CODEC_ID_SIPR:
2780			{
2781		✗	const uint8_t *ptr = track->codec_priv.data;
2782			int flavor;
2783
2784		✗	if (!track->codec_priv.size)
2785		✗	break;
2786
2787		✗	if (track->codec_priv.size < 46)
2788		✗	return AVERROR_INVALIDDATA;
2789		✗	ptr += 22;
2790		✗	flavor = bytestream_get_be16(&ptr);
2791		✗	track->audio.coded_framesize = bytestream_get_be32(&ptr);
2792		✗	ptr += 12;
2793		✗	track->audio.sub_packet_h = bytestream_get_be16(&ptr);
2794		✗	track->audio.frame_size = bytestream_get_be16(&ptr);
2795		✗	track->audio.sub_packet_size = bytestream_get_be16(&ptr);
2796		✗	if (track->audio.coded_framesize <= 0 ||
2797		✗	track->audio.sub_packet_h <= 0 ||
2798		✗	track->audio.frame_size <= 0)
2799		✗	return AVERROR_INVALIDDATA;
2800
2801		✗	if (par->codec_id == AV_CODEC_ID_RA_288) {
2802		✗	if (track->audio.sub_packet_h & 1 || 2 * track->audio.frame_size
2803		✗	!= (int64_t)track->audio.sub_packet_h * track->audio.coded_framesize)
2804		✗	return AVERROR_INVALIDDATA;
2805		✗	par->block_align = track->audio.coded_framesize;
2806		✗	track->codec_priv.size = 0;
2807			} else {
2808		✗	if (par->codec_id == AV_CODEC_ID_SIPR) {
2809			static const int sipr_bit_rate[4] = { 6504, 8496, 5000, 16000 };
2810		✗	if (flavor > 3)
2811		✗	return AVERROR_INVALIDDATA;
2812		✗	track->audio.sub_packet_size = ff_sipr_subpk_size[flavor];
2813		✗	par->bit_rate = sipr_bit_rate[flavor];
2814		✗	} else if (track->audio.sub_packet_size <= 0 ||
2815		✗	track->audio.frame_size % track->audio.sub_packet_size)
2816		✗	return AVERROR_INVALIDDATA;
2817		✗	par->block_align = track->audio.sub_packet_size;
2818		✗	*extradata_offset = 78;
2819			}
2820		✗	if (par->block_align <= 0 ||
2821		✗	track->audio.sub_packet_h * (unsigned)track->audio.frame_size > INT_MAX ||
2822		✗	track->audio.frame_size * track->audio.sub_packet_h < par->block_align)
2823		✗	return AVERROR_INVALIDDATA;
2824		✗	track->audio.buf = av_malloc_array(track->audio.sub_packet_h,
2825		✗	track->audio.frame_size);
2826		✗	if (!track->audio.buf)
2827		✗	return AVERROR(ENOMEM);
2828		✗	break;
2829			}
2830		1	case AV_CODEC_ID_ATRAC1:
2831			/* ATRAC1 uses a constant frame size.
2832			* Typical ATRAC1 streams are either mono or stereo.
2833			* At most, ATRAC1 was used to store 8 channels of audio. */
2834	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 1 times.	1	if (track->audio.channels > 8)
2835		✗	return AVERROR_INVALIDDATA;
2836		1	par->block_align = track->audio.channels * 212;
2837		1	break;
2838		9	case AV_CODEC_ID_FLAC:
2839	1/2 ✓ Branch 0 taken 9 times. ✗ Branch 1 not taken.	9	if (track->codec_priv.size) {
2840		9	ret = matroska_parse_flac(s, track, extradata_offset);
2841	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 9 times.	9	if (ret < 0)
2842		✗	return ret;
2843			}
2844		9	break;
2845		2	case AV_CODEC_ID_WAVPACK:
2846	2/2 ✓ Branch 0 taken 1 times. ✓ Branch 1 taken 1 times.	2	if (track->codec_priv.size < 2) {
2847		1	av_log(matroska->ctx, AV_LOG_INFO, "Assuming WavPack version 4.10 "
2848			"in absence of valid CodecPrivate.\n");
2849		1	extradata_size = WAVPACK_EXTRADATA_SIZE;
2850		1	AV_WL16(extradata, 0x410);
2851			}
2852		2	break;
2853			}
2854
2855	2/2 ✓ Branch 0 taken 4 times. ✓ Branch 1 taken 80 times.	84	if (extradata_size > 0) {
2856		4	ret = ff_alloc_extradata(par, extradata_size);
2857	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 4 times.	4	if (ret < 0)
2858		✗	return ret;
2859		4	memcpy(par->extradata, extradata, extradata_size);
2860			}
2861
2862		84	return 0;
2863			}
2864
2865			/* Performs the generic part of parsing an audio track. */
2866		85	static int mka_parse_audio(MatroskaTrack *track, AVStream *st,
2867			AVCodecParameters *par,
2868			const MatroskaDemuxContext *matroska,
2869			AVFormatContext *s, int *extradata_offset)
2870			{
2871		85	FFStream *const sti = ffstream(st);
2872			int ret;
2873
2874		85	ret = mka_parse_audio_codec(track, par, matroska,
2875			s, extradata_offset);
2876	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 85 times.	85	if (ret)
2877		✗	return ret;
2878
2879		85	par->codec_type = AVMEDIA_TYPE_AUDIO;
2880		85	par->sample_rate = track->audio.out_samplerate;
2881			// channel layout may be already set by codec private checks above
2882	2/2 ✓ Branch 1 taken 76 times. ✓ Branch 2 taken 9 times.	85	if (!av_channel_layout_check(&par->ch_layout)) {
2883	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 76 times.	76	if (track->audio.channels > INT32_MAX)
2884		✗	return AVERROR_PATCHWELCOME;
2885		76	par->ch_layout.order = AV_CHANNEL_ORDER_UNSPEC;
2886		76	par->ch_layout.nb_channels = track->audio.channels;
2887			}
2888	2/2 ✓ Branch 0 taken 84 times. ✓ Branch 1 taken 1 times.	85	if (!par->bits_per_coded_sample)
2889		84	par->bits_per_coded_sample = track->audio.bitdepth;
2890	2/2 ✓ Branch 0 taken 84 times. ✓ Branch 1 taken 1 times.	85	if (par->codec_id == AV_CODEC_ID_MP3 ||
2891	1/2 ✓ Branch 0 taken 84 times. ✗ Branch 1 not taken.	84	par->codec_id == AV_CODEC_ID_MLP ||
2892	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 84 times.	84	par->codec_id == AV_CODEC_ID_TRUEHD)
2893		1	sti->need_parsing = AVSTREAM_PARSE_FULL;
2894	2/2 ✓ Branch 0 taken 72 times. ✓ Branch 1 taken 12 times.	84	else if (par->codec_id != AV_CODEC_ID_AAC)
2895		72	sti->need_parsing = AVSTREAM_PARSE_HEADERS;
2896	2/2 ✓ Branch 0 taken 17 times. ✓ Branch 1 taken 68 times.	85	if (track->codec_delay > 0) {
2897		17	par->initial_padding = av_rescale_q(track->codec_delay,
2898		17	(AVRational){1, 1000000000},
2899		34	(AVRational){1, par->codec_id == AV_CODEC_ID_OPUS ?
2900	2/2 ✓ Branch 0 taken 10 times. ✓ Branch 1 taken 7 times.	17	48000 : par->sample_rate});
2901		17	sti->skip_samples = par->initial_padding;
2902			}
2903	2/2 ✓ Branch 0 taken 8 times. ✓ Branch 1 taken 77 times.	85	if (track->seek_preroll > 0) {
2904		8	par->seek_preroll = av_rescale_q(track->seek_preroll,
2905		8	(AVRational){1, 1000000000},
2906		8	(AVRational){1, par->sample_rate});
2907			}
2908
2909		85	return 0;
2910			}
2911
2912			/* Performs the codec-specific part of parsing a video track. */
2913		360	static int mkv_parse_video_codec(MatroskaTrack *track, AVCodecParameters *par,
2914			const MatroskaDemuxContext *matroska,
2915			int *extradata_offset)
2916			{
2917	2/2 ✓ Branch 0 taken 5 times. ✓ Branch 1 taken 355 times.	360	if (!strcmp(track->codec_id, "V_MS/VFW/FOURCC") &&
2918	1/2 ✓ Branch 0 taken 5 times. ✗ Branch 1 not taken.	5	track->codec_priv.size >= 40) {
2919		5	uint32_t size = AV_RL32A(track->codec_priv.data);
2920			// VFW extradata is padded to an even length, yet
2921			// the size field contains the real length.
2922	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)
2923		✗	--track->codec_priv.size;
2924		5	track->ms_compat = 1;
2925		5	par->bits_per_coded_sample = AV_RL16(track->codec_priv.data + 14);
2926		5	par->codec_tag = AV_RL32(track->codec_priv.data + 16);
2927		5	par->codec_id = ff_codec_get_id(ff_codec_bmp_tags,
2928			par->codec_tag);
2929	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 5 times.	5	if (!par->codec_id)
2930		✗	par->codec_id = ff_codec_get_id(ff_codec_movvideo_tags,
2931			par->codec_tag);
2932		5	*extradata_offset = 40;
2933		5	return 0;
2934	2/2 ✓ Branch 0 taken 1 times. ✓ Branch 1 taken 354 times.	355	} else if (!strcmp(track->codec_id, "V_QUICKTIME") &&
2935	1/2 ✓ Branch 0 taken 1 times. ✗ Branch 1 not taken.	1	track->codec_priv.size >= 21) {
2936			enum AVCodecID codec_id;
2937			uint32_t fourcc;
2938		1	int ret = get_qt_codec(track, &fourcc, &codec_id);
2939	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 1 times.	1	if (ret < 0)
2940		✗	return ret;
2941	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 ")) {
2942		✗	fourcc = MKTAG('S','V','Q','3');
2943		✗	codec_id = ff_codec_get_id(ff_codec_movvideo_tags, fourcc);
2944			}
2945		1	par->codec_id = codec_id;
2946	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 1 times.	1	if (codec_id == AV_CODEC_ID_NONE)
2947		✗	av_log(matroska->ctx, AV_LOG_ERROR,
2948		✗	"mov FourCC not found %s.\n", av_fourcc2str(fourcc));
2949	1/2 ✓ Branch 0 taken 1 times. ✗ Branch 1 not taken.	1	if (track->codec_priv.size >= 86) {
2950			FFIOContext b;
2951		1	unsigned bit_depth = AV_RB16(track->codec_priv.data + 82);
2952		1	ffio_init_read_context(&b, track->codec_priv.data,
2953			track->codec_priv.size);
2954	1/2 ✗ Branch 1 not taken. ✓ Branch 2 taken 1 times.	1	if (ff_get_qtpalette(codec_id, &b.pub, track->palette)) {
2955		✗	bit_depth &= 0x1F;
2956		✗	track->has_palette = 1;
2957			}
2958		1	par->bits_per_coded_sample = bit_depth;
2959			}
2960		1	par->codec_tag = fourcc;
2961		1	return 0;
2962			}
2963
2964	3/4 ✗ Branch 0 not taken. ✓ Branch 1 taken 5 times. ✓ Branch 2 taken 249 times. ✓ Branch 3 taken 100 times.	354	switch (par->codec_id) {
2965		✗	case AV_CODEC_ID_RV10:
2966			case AV_CODEC_ID_RV20:
2967			case AV_CODEC_ID_RV30:
2968			case AV_CODEC_ID_RV40:
2969		✗	*extradata_offset = 26;
2970		✗	break;
2971		5	case AV_CODEC_ID_PRORES:
2972	1/2 ✓ Branch 0 taken 5 times. ✗ Branch 1 not taken.	5	if (track->codec_priv.size == 4)
2973		5	par->codec_tag = AV_RL32(track->codec_priv.data);
2974		5	break;
2975		249	case AV_CODEC_ID_VP9:
2976			/* we don't need any value stored in CodecPrivate.
2977			* make sure that it's not exported as extradata. */
2978		249	track->codec_priv.size = 0;
2979		249	break;
2980			}
2981
2982		354	return 0;
2983			}
2984
2985			/* Performs the generic part of parsing a video track. */
2986		360	static int mkv_parse_video(MatroskaTrack *track, AVStream *st,
2987			AVCodecParameters *par,
2988			const MatroskaDemuxContext *matroska,
2989			int *extradata_offset)
2990			{
2991		360	FFStream *const sti = ffstream(st);
2992			MatroskaTrackPlane *planes;
2993		360	int display_width_mul = 1;
2994		360	int display_height_mul = 1;
2995			int ret;
2996
2997	2/2 ✓ Branch 0 taken 4 times. ✓ Branch 1 taken 356 times.	360	if (track->video.color_space.size == 4)
2998		4	par->codec_tag = AV_RL32(track->video.color_space.data);
2999
3000		360	ret = mkv_parse_video_codec(track, par, matroska,
3001			extradata_offset);
3002	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 360 times.	360	if (ret < 0)
3003		✗	return ret;
3004
3005		360	par->codec_type = AVMEDIA_TYPE_VIDEO;
3006		360	par->width = track->video.pixel_width;
3007		360	par->height = track->video.pixel_height;
3008
3009	2/2 ✓ Branch 0 taken 7 times. ✓ Branch 1 taken 353 times.	360	if (track->video.interlaced == MATROSKA_VIDEO_INTERLACE_FLAG_INTERLACED)
3010		7	par->field_order = mkv_field_order(matroska, track->video.field_order);
3011	2/2 ✓ Branch 0 taken 21 times. ✓ Branch 1 taken 332 times.	353	else if (track->video.interlaced == MATROSKA_VIDEO_INTERLACE_FLAG_PROGRESSIVE)
3012		21	par->field_order = AV_FIELD_PROGRESSIVE;
3013
3014	4/4 ✓ Branch 0 taken 132 times. ✓ Branch 1 taken 228 times. ✓ Branch 2 taken 12 times. ✓ Branch 3 taken 120 times.	360	if (track->video.stereo_mode && track->video.stereo_mode < MATROSKA_VIDEO_STEREOMODE_TYPE_NB)
3015		12	mkv_stereo_mode_display_mul(track->video.stereo_mode,
3016			&display_width_mul, &display_height_mul);
3017
3018	2/2 ✓ Branch 0 taken 333 times. ✓ Branch 1 taken 27 times.	360	if (track->video.display_unit < MATROSKA_VIDEO_DISPLAYUNIT_UNKNOWN) {
3019	2/4 ✓ Branch 0 taken 333 times. ✗ Branch 1 not taken. ✓ Branch 2 taken 333 times. ✗ Branch 3 not taken.	333	if (track->video.display_width && track->video.display_height &&
3020	2/4 ✓ Branch 0 taken 333 times. ✗ Branch 1 not taken. ✓ Branch 2 taken 333 times. ✗ Branch 3 not taken.	333	track->video.display_width != -1 && track->video.display_height != -1 &&
3021	1/2 ✓ Branch 0 taken 333 times. ✗ Branch 1 not taken.	333	track->video.cropped_height < INT64_MAX / track->video.display_width / display_width_mul &&
3022	1/2 ✓ Branch 0 taken 333 times. ✗ Branch 1 not taken.	333	track->video.cropped_width < INT64_MAX / track->video.display_height / display_height_mul)
3023		333	av_reduce(&st->sample_aspect_ratio.num,
3024			&st->sample_aspect_ratio.den,
3025		333	track->video.cropped_height * track->video.display_width * display_width_mul,
3026		333	track->video.cropped_width * track->video.display_height * display_height_mul,
3027			INT_MAX);
3028			}
3029	2/2 ✓ Branch 0 taken 356 times. ✓ Branch 1 taken 4 times.	360	if (track->video.cropped_width != track->video.pixel_width ||
3030	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 356 times.	356	track->video.cropped_height != track->video.pixel_height) {
3031			uint8_t *cropping;
3032		4	AVPacketSideData *sd = av_packet_side_data_new(&st->codecpar->coded_side_data,
3033		4	&st->codecpar->nb_coded_side_data,
3034			AV_PKT_DATA_FRAME_CROPPING,
3035			sizeof(uint32_t) * 4, 0);
3036	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 4 times.	4	if (!sd)
3037		✗	return AVERROR(ENOMEM);
3038
3039		4	cropping = sd->data;
3040		4	bytestream_put_le32(&cropping, track->video.pixel_cropt);
3041		4	bytestream_put_le32(&cropping, track->video.pixel_cropb);
3042		4	bytestream_put_le32(&cropping, track->video.pixel_cropl);
3043		4	bytestream_put_le32(&cropping, track->video.pixel_cropr);
3044			}
3045	2/2 ✓ Branch 0 taken 326 times. ✓ Branch 1 taken 34 times.	360	if (par->codec_id != AV_CODEC_ID_HEVC)
3046		326	sti->need_parsing = AVSTREAM_PARSE_HEADERS;
3047
3048	2/2 ✓ Branch 0 taken 318 times. ✓ Branch 1 taken 42 times.	360	if (track->default_duration) {
3049	1/2 ✓ Branch 0 taken 318 times. ✗ Branch 1 not taken.	318	int div = track->default_duration <= INT64_MAX ? 1 : 2;
3050		318	av_reduce(&st->avg_frame_rate.num, &st->avg_frame_rate.den,
3051		318	1000000000 / div, track->default_duration / div, 30000);
3052			#if FF_API_R_FRAME_RATE
3053	2/2 ✓ Branch 0 taken 316 times. ✓ Branch 1 taken 2 times.	318	if ( st->avg_frame_rate.num < st->avg_frame_rate.den * 1000LL
3054	2/2 ✓ Branch 0 taken 295 times. ✓ Branch 1 taken 21 times.	316	&& st->avg_frame_rate.num > st->avg_frame_rate.den * 5LL)
3055		295	st->r_frame_rate = st->avg_frame_rate;
3056			#endif
3057			}
3058
3059			/* export stereo mode flag as metadata tag */
3060	4/4 ✓ Branch 0 taken 132 times. ✓ Branch 1 taken 228 times. ✓ Branch 2 taken 12 times. ✓ Branch 3 taken 120 times.	360	if (track->video.stereo_mode && track->video.stereo_mode < MATROSKA_VIDEO_STEREOMODE_TYPE_NB)
3061		12	av_dict_set(&st->metadata, "stereo_mode", ff_matroska_video_stereo_mode[track->video.stereo_mode], 0);
3062
3063			/* export alpha mode flag as metadata tag */
3064	2/2 ✓ Branch 0 taken 3 times. ✓ Branch 1 taken 357 times.	360	if (track->video.alpha_mode)
3065		3	av_dict_set_int(&st->metadata, "alpha_mode", 1, 0);
3066
3067			/* if we have virtual track, mark the real tracks */
3068		360	planes = track->operation.combine_planes.elem;
3069	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 360 times.	360	for (int j = 0; j < track->operation.combine_planes.nb_elem; j++) {
3070		✗	MatroskaTrack *tracks = matroska->tracks.elem;
3071			char buf[32];
3072		✗	if (planes[j].type >= MATROSKA_VIDEO_STEREO_PLANE_COUNT)
3073		✗	continue;
3074		✗	snprintf(buf, sizeof(buf), "%s_%d",
3075		✗	matroska_video_stereo_plane[planes[j].type], st->index);
3076		✗	for (int k = 0; k < matroska->tracks.nb_elem; k++)
3077		✗	if (planes[j].uid == tracks[k].uid && tracks[k].stream) {
3078		✗	av_dict_set(&tracks[k].stream->metadata,
3079			"stereo_mode", buf, 0);
3080		✗	break;
3081			}
3082			}
3083			// add stream level stereo3d side data if it is a supported format
3084	2/2 ✓ Branch 0 taken 240 times. ✓ Branch 1 taken 120 times.	360	if (track->video.stereo_mode < MATROSKA_VIDEO_STEREOMODE_TYPE_NB &&
3085	2/2 ✓ Branch 0 taken 238 times. ✓ Branch 1 taken 2 times.	240	track->video.stereo_mode != MATROSKA_VIDEO_STEREOMODE_TYPE_ANAGLYPH_CYAN_RED &&
3086	2/2 ✓ Branch 0 taken 236 times. ✓ Branch 1 taken 2 times.	238	track->video.stereo_mode != MATROSKA_VIDEO_STEREOMODE_TYPE_ANAGLYPH_GREEN_MAG) {
3087		236	ret = mkv_stereo3d_conv(st, track->video.stereo_mode);
3088	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 236 times.	236	if (ret < 0)
3089		✗	return ret;
3090			}
3091
3092		360	ret = mkv_parse_video_color(st, track);
3093	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 360 times.	360	if (ret < 0)
3094		✗	return ret;
3095		360	ret = mkv_parse_video_projection(st, track, matroska->ctx);
3096	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 360 times.	360	if (ret < 0)
3097		✗	return ret;
3098
3099		360	return 0;
3100			}
3101
3102			/* Performs the codec-specific part of parsing a subtitle track. */
3103		24	static int mkv_parse_subtitle_codec(MatroskaTrack *track, AVStream *st,
3104			AVCodecParameters *par,
3105			const MatroskaDemuxContext *matroska)
3106			{
3107	2/3 ✗ Branch 0 not taken. ✓ Branch 1 taken 8 times. ✓ Branch 2 taken 16 times.	24	switch (par->codec_id) {
3108		✗	case AV_CODEC_ID_ARIB_CAPTION:
3109		✗	if (track->codec_priv.size == 3) {
3110		✗	int component_tag = track->codec_priv.data[0];
3111		✗	int data_component_id = AV_RB16(track->codec_priv.data + 1);
3112
3113		✗	switch (data_component_id) {
3114		✗	case 0x0008:
3115			// [0x30..0x37] are component tags utilized for
3116			// non-mobile captioning service ("profile A").
3117		✗	if (component_tag >= 0x30 && component_tag <= 0x37) {
3118		✗	par->profile = AV_PROFILE_ARIB_PROFILE_A;
3119			}
3120		✗	break;
3121		✗	case 0x0012:
3122			// component tag 0x87 signifies a mobile/partial reception
3123			// (1seg) captioning service ("profile C").
3124		✗	if (component_tag == 0x87) {
3125		✗	par->profile = AV_PROFILE_ARIB_PROFILE_C;
3126			}
3127		✗	break;
3128		✗	default:
3129		✗	break;
3130			}
3131
3132		✗	if (par->profile == AV_PROFILE_UNKNOWN)
3133		✗	av_log(matroska->ctx, AV_LOG_WARNING,
3134			"Unknown ARIB caption profile utilized: %02x / %04x\n",
3135			component_tag, data_component_id);
3136
3137		✗	track->codec_priv.size = 0;
3138			}
3139		✗	break;
3140		8	case AV_CODEC_ID_WEBVTT:
3141	2/2 ✓ Branch 0 taken 2 times. ✓ Branch 1 taken 6 times.	8	if (!strcmp(track->codec_id, "D_WEBVTT/CAPTIONS")) {
3142		2	st->disposition |= AV_DISPOSITION_CAPTIONS;
3143	2/2 ✓ Branch 0 taken 2 times. ✓ Branch 1 taken 4 times.	6	} else if (!strcmp(track->codec_id, "D_WEBVTT/DESCRIPTIONS")) {
3144		2	st->disposition |= AV_DISPOSITION_DESCRIPTIONS;
3145	2/2 ✓ Branch 0 taken 2 times. ✓ Branch 1 taken 2 times.	4	} else if (!strcmp(track->codec_id, "D_WEBVTT/METADATA")) {
3146		2	st->disposition |= AV_DISPOSITION_METADATA;
3147			}
3148		8	break;
3149			}
3150
3151		24	return 0;
3152			}
3153
3154		394	static int matroska_parse_tracks(AVFormatContext *s)
3155			{
3156		394	MatroskaDemuxContext *matroska = s->priv_data;
3157		394	MatroskaTrack *tracks = matroska->tracks.elem;
3158			int i, j, ret;
3159
3160	2/2 ✓ Branch 0 taken 469 times. ✓ Branch 1 taken 394 times.	863	for (i = 0; i < matroska->tracks.nb_elem; i++) {
3161		469	MatroskaTrack *track = &tracks[i];
3162		469	enum AVCodecID codec_id = AV_CODEC_ID_NONE;
3163			AVCodecParameters *par;
3164			MatroskaTrackType type;
3165		469	int extradata_offset = 0;
3166			AVStream *st;
3167		469	char* key_id_base64 = NULL;
3168
3169			/* Apply some sanity checks. */
3170	2/2 ✓ Branch 0 taken 109 times. ✓ Branch 1 taken 360 times.	469	if (track->type != MATROSKA_TRACK_TYPE_VIDEO &&
3171	2/2 ✓ Branch 0 taken 24 times. ✓ Branch 1 taken 85 times.	109	track->type != MATROSKA_TRACK_TYPE_AUDIO &&
3172	2/2 ✓ Branch 0 taken 4 times. ✓ Branch 1 taken 20 times.	24	track->type != MATROSKA_TRACK_TYPE_SUBTITLE &&
3173	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 4 times.	4	track->type != MATROSKA_TRACK_TYPE_METADATA) {
3174		✗	av_log(matroska->ctx, AV_LOG_INFO,
3175			"Unknown or unsupported track type %"PRIu64"\n",
3176			track->type);
3177		✗	continue;
3178			}
3179	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 469 times.	469	if (!track->codec_id)
3180		✗	continue;
3181
3182	3/4 ✓ Branch 0 taken 85 times. ✓ Branch 1 taken 384 times. ✓ Branch 2 taken 85 times. ✗ Branch 3 not taken.	469	if ( track->type == MATROSKA_TRACK_TYPE_AUDIO && track->codec_id[0] != 'A'
3183	3/4 ✓ Branch 0 taken 360 times. ✓ Branch 1 taken 109 times. ✓ Branch 2 taken 360 times. ✗ Branch 3 not taken.	469	|| track->type == MATROSKA_TRACK_TYPE_VIDEO && track->codec_id[0] != 'V'
3184	5/6 ✓ Branch 0 taken 20 times. ✓ Branch 1 taken 449 times. ✓ Branch 2 taken 16 times. ✓ Branch 3 taken 4 times. ✓ Branch 4 taken 16 times. ✗ Branch 5 not taken.	469	|| track->type == MATROSKA_TRACK_TYPE_SUBTITLE && track->codec_id[0] != 'D' && track->codec_id[0] != 'S'
3185	3/6 ✓ Branch 0 taken 4 times. ✓ Branch 1 taken 465 times. ✗ Branch 2 not taken. ✓ Branch 3 taken 4 times. ✗ Branch 4 not taken. ✗ Branch 5 not taken.	469	|| track->type == MATROSKA_TRACK_TYPE_METADATA && track->codec_id[0] != 'D' && track->codec_id[0] != 'S'
3186			) {
3187		✗	av_log(matroska->ctx, AV_LOG_INFO, "Inconsistent track type\n");
3188		✗	continue;
3189			}
3190
3191	2/4 ✓ Branch 0 taken 469 times. ✗ Branch 1 not taken. ✓ Branch 2 taken 469 times. ✗ Branch 3 not taken.	469	if (track->audio.samplerate < 0 || track->audio.samplerate > INT_MAX ||
3192	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 469 times.	469	isnan(track->audio.samplerate)) {
3193		✗	av_log(matroska->ctx, AV_LOG_WARNING,
3194			"Invalid sample rate %f, defaulting to 8000 instead.\n",
3195			track->audio.samplerate);
3196		✗	track->audio.samplerate = 8000;
3197			}
3198
3199	2/2 ✓ Branch 0 taken 360 times. ✓ Branch 1 taken 109 times.	469	if (track->type == MATROSKA_TRACK_TYPE_VIDEO) {
3200	4/4 ✓ Branch 0 taken 246 times. ✓ Branch 1 taken 114 times. ✓ Branch 2 taken 204 times. ✓ Branch 3 taken 42 times.	360	if (!track->default_duration && track->video.frame_rate > 0) {
3201		204	double default_duration = 1000000000 / track->video.frame_rate;
3202	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) {
3203		✗	av_log(matroska->ctx, AV_LOG_WARNING,
3204			"Invalid frame rate %e. Cannot calculate default duration.\n",
3205			track->video.frame_rate);
3206			} else {
3207		204	track->default_duration = default_duration;
3208			}
3209			}
3210	1/4 ✗ Branch 0 not taken. ✓ Branch 1 taken 360 times. ✗ Branch 2 not taken. ✗ Branch 3 not taken.	360	int has_dimensions = track->video.pixel_width || track->video.pixel_height;
3211	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 360 times.	360	if ((matroska->ctx->strict_std_compliance >= FF_COMPLIANCE_STRICT &&
3212		✗	(!track->video.pixel_width || !track->video.pixel_height)) ||
3213	1/2 ✓ Branch 0 taken 360 times. ✗ Branch 1 not taken.	360	(track->video.pixel_cropl >= INT_MAX - track->video.pixel_cropr ||
3214	1/2 ✓ Branch 0 taken 360 times. ✗ Branch 1 not taken.	360	track->video.pixel_cropt >= INT_MAX - track->video.pixel_cropb ||
3215	1/2 ✓ Branch 0 taken 360 times. ✗ Branch 1 not taken.	360	(track->video.pixel_cropl + track->video.pixel_cropr) >= track->video.pixel_width + !has_dimensions ||
3216	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 360 times.	360	(track->video.pixel_cropt + track->video.pixel_cropb) >= track->video.pixel_height + !has_dimensions)) {
3217		✗	av_log(matroska->ctx, AV_LOG_ERROR,
3218			"Invalid coded dimensions %"PRId64"x%"PRId64" [%"PRId64", %"PRId64", %"PRId64", %"PRId64"].\n",
3219			track->video.pixel_width, track->video.pixel_height,
3220			track->video.pixel_cropl, track->video.pixel_cropr,
3221			track->video.pixel_cropt, track->video.pixel_cropb);
3222		✗	return AVERROR_INVALIDDATA;
3223			}
3224		360	track->video.cropped_width = track->video.pixel_width -
3225		360	track->video.pixel_cropl - track->video.pixel_cropr;
3226		360	track->video.cropped_height = track->video.pixel_height -
3227		360	track->video.pixel_cropt - track->video.pixel_cropb;
3228	2/2 ✓ Branch 0 taken 318 times. ✓ Branch 1 taken 42 times.	360	if (track->video.display_unit == MATROSKA_VIDEO_DISPLAYUNIT_PIXELS) {
3229	2/2 ✓ Branch 0 taken 268 times. ✓ Branch 1 taken 50 times.	318	if (track->video.display_width == -1)
3230		268	track->video.display_width = track->video.cropped_width;
3231	2/2 ✓ Branch 0 taken 268 times. ✓ Branch 1 taken 50 times.	318	if (track->video.display_height == -1)
3232		268	track->video.display_height = track->video.cropped_height;
3233			}
3234	2/2 ✓ Branch 0 taken 85 times. ✓ Branch 1 taken 24 times.	109	} else if (track->type == MATROSKA_TRACK_TYPE_AUDIO) {
3235	2/2 ✓ Branch 0 taken 84 times. ✓ Branch 1 taken 1 times.	85	if (!track->audio.out_samplerate)
3236		84	track->audio.out_samplerate = track->audio.samplerate;
3237			}
3238		469	ret = matroska_parse_content_encodings(track->encodings.elem,
3239		469	track->encodings.nb_elem,
3240		469	track, &key_id_base64, matroska->ctx);
3241	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 469 times.	469	if (ret < 0)
3242		✗	return ret;
3243
3244	2/2 ✓ Branch 0 taken 28134 times. ✓ Branch 1 taken 7 times.	28141	for (j = 0; ff_mkv_codec_tags[j].id != AV_CODEC_ID_NONE; j++) {
3245	2/2 ✓ Branch 1 taken 462 times. ✓ Branch 2 taken 27672 times.	28134	if (av_strstart(track->codec_id, ff_mkv_codec_tags[j].str, NULL)) {
3246		462	codec_id = ff_mkv_codec_tags[j].id;
3247		462	break;
3248			}
3249			}
3250
3251		469	st = track->stream = avformat_new_stream(s, NULL);
3252	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 469 times.	469	if (!st) {
3253		✗	av_free(key_id_base64);
3254		✗	return AVERROR(ENOMEM);
3255			}
3256		469	par = st->codecpar;
3257
3258		469	par->codec_id = codec_id;
3259
3260	2/2 ✓ Branch 0 taken 381 times. ✓ Branch 1 taken 88 times.	469	if (track->flag_default)
3261		381	st->disposition |= AV_DISPOSITION_DEFAULT;
3262	2/2 ✓ Branch 0 taken 4 times. ✓ Branch 1 taken 465 times.	469	if (track->flag_forced)
3263		4	st->disposition |= AV_DISPOSITION_FORCED;
3264	2/2 ✓ Branch 0 taken 2 times. ✓ Branch 1 taken 467 times.	469	if (track->flag_comment)
3265		2	st->disposition |= AV_DISPOSITION_COMMENT;
3266	2/2 ✓ Branch 0 taken 8 times. ✓ Branch 1 taken 461 times.	469	if (track->flag_hearingimpaired)
3267		8	st->disposition |= AV_DISPOSITION_HEARING_IMPAIRED;
3268	2/2 ✓ Branch 0 taken 2 times. ✓ Branch 1 taken 467 times.	469	if (track->flag_visualimpaired)
3269		2	st->disposition |= AV_DISPOSITION_VISUAL_IMPAIRED;
3270	2/2 ✓ Branch 0 taken 4 times. ✓ Branch 1 taken 465 times.	469	if (track->flag_original.count > 0)
3271		4	st->disposition |= track->flag_original.el.u ? AV_DISPOSITION_ORIGINAL
3272	2/2 ✓ Branch 0 taken 2 times. ✓ Branch 1 taken 2 times.	4	: AV_DISPOSITION_DUB;
3273
3274	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 469 times.	469	if (key_id_base64) {
3275			/* export encryption key id as base64 metadata tag */
3276		✗	av_dict_set(&st->metadata, "enc_key_id", key_id_base64,
3277			AV_DICT_DONT_STRDUP_VAL);
3278			}
3279
3280	2/2 ✓ Branch 0 taken 333 times. ✓ Branch 1 taken 136 times.	469	if (strcmp(track->language, "und"))
3281		333	av_dict_set(&st->metadata, "language", track->language, 0);
3282		469	av_dict_set(&st->metadata, "title", track->name, 0);
3283
3284	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 469 times.	469	if (track->time_scale < 0.01) {
3285		✗	av_log(matroska->ctx, AV_LOG_WARNING,
3286			"Track TimestampScale too small %f, assuming 1.0.\n",
3287			track->time_scale);
3288		✗	track->time_scale = 1.0;
3289			}
3290
3291	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 469 times.	469	if (matroska->time_scale * track->time_scale > UINT_MAX)
3292		✗	return AVERROR_INVALIDDATA;
3293
3294		469	avpriv_set_pts_info(st, 64, matroska->time_scale * track->time_scale,
3295			1000 * 1000 * 1000); /* 64 bit pts in ns */
3296
3297			/* convert the delay from ns to the track timebase */
3298		469	track->codec_delay_in_track_tb = av_rescale_q(track->codec_delay,
3299		469	(AVRational){ 1, 1000000000 },
3300			st->time_base);
3301
3302		469	type = track->type;
3303	2/2 ✓ Branch 0 taken 8 times. ✓ Branch 1 taken 461 times.	469	if (par->codec_id == AV_CODEC_ID_WEBVTT)
3304		8	type = MATROSKA_TRACK_TYPE_SUBTITLE;
3305	3/4 ✓ Branch 0 taken 85 times. ✓ Branch 1 taken 360 times. ✓ Branch 2 taken 24 times. ✗ Branch 3 not taken.	469	switch (type) {
3306		85	case MATROSKA_TRACK_TYPE_AUDIO:
3307		85	ret = mka_parse_audio(track, st, par, matroska,
3308			s, &extradata_offset);
3309	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 85 times.	85	if (ret < 0)
3310		✗	return ret;
3311	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 85 times.	85	if (ret == SKIP_TRACK)
3312		✗	continue;
3313		85	break;
3314		360	case MATROSKA_TRACK_TYPE_VIDEO:
3315		360	ret = mkv_parse_video(track, st, par, matroska, &extradata_offset);
3316	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 360 times.	360	if (ret < 0)
3317		✗	return ret;
3318		360	break;
3319		24	case MATROSKA_TRACK_TYPE_SUBTITLE:
3320		24	ret = mkv_parse_subtitle_codec(track, st, par, matroska);
3321	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 24 times.	24	if (ret < 0)
3322		✗	return ret;
3323		24	par->codec_type = AVMEDIA_TYPE_SUBTITLE;
3324
3325	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 24 times.	24	if (track->flag_textdescriptions)
3326		✗	st->disposition |= AV_DISPOSITION_DESCRIPTIONS;
3327		24	break;
3328			}
3329
3330	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 469 times.	469	if (par->codec_id == AV_CODEC_ID_NONE)
3331		✗	av_log(matroska->ctx, AV_LOG_INFO,
3332			"Unknown/unsupported AVCodecID %s.\n", track->codec_id);
3333
3334	4/4 ✓ Branch 0 taken 462 times. ✓ Branch 1 taken 7 times. ✓ Branch 2 taken 160 times. ✓ Branch 3 taken 302 times.	469	if (!par->extradata && track->codec_priv.size > extradata_offset) {
3335		160	const uint8_t *src = track->codec_priv.data + extradata_offset;
3336		160	unsigned extra_size = track->codec_priv.size - extradata_offset;
3337		160	ret = ff_alloc_extradata(par, extra_size);
3338	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 160 times.	160	if (ret < 0)
3339		✗	return ret;
3340		160	memcpy(par->extradata, src, extra_size);
3341			}
3342
3343		469	ret = mkv_parse_block_addition_mappings(s, st, track);
3344	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 469 times.	469	if (ret < 0)
3345		✗	return ret;
3346			}
3347
3348		394	return 0;
3349			}
3350
3351		394	static int matroska_parse_dovi_streams(AVFormatContext *s)
3352			{
3353		394	AVStream *bl_st = NULL, *el_st = NULL;
3354			AVStreamGroup *stg;
3355			int err;
3356
3357			/* Matroska has no explicit cross-track Dolby Vision reference, so the
3358			* pairing is recovered from the dvcC/dvvC config records. Find a single
3359			* HEVC track whose record declares a profile 7 enhancement layer
3360			* (el_present_flag=1) and a single sibling HEVC BL candidate. If either
3361			* side is ambiguous, leave the streams ungrouped. */
3362	2/2 ✓ Branch 0 taken 338 times. ✓ Branch 1 taken 56 times.	394	if (s->nb_streams <= 1)
3363		338	return 0;
3364
3365	2/2 ✓ Branch 0 taken 143 times. ✓ Branch 1 taken 54 times.	197	for (int i = 0; i < s->nb_streams; i++) {
3366		143	AVStream *st = s->streams[i];
3367			const AVPacketSideData *sd;
3368			const AVDOVIDecoderConfigurationRecord *dovi;
3369
3370	2/2 ✓ Branch 0 taken 120 times. ✓ Branch 1 taken 23 times.	143	if (st->codecpar->codec_id != AV_CODEC_ID_HEVC)
3371		120	continue;
3372
3373		23	sd = av_packet_side_data_get(st->codecpar->coded_side_data,
3374		23	st->codecpar->nb_coded_side_data,
3375			AV_PKT_DATA_DOVI_CONF);
3376	2/2 ✓ Branch 0 taken 4 times. ✓ Branch 1 taken 19 times.	23	if (sd) {
3377		4	dovi = (const AVDOVIDecoderConfigurationRecord *)sd->data;
3378	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) {
3379			/* bl_present_flag is not checked, because the files in the
3380			* wild set it to 1 for EL stream, while the expectation, based
3381			* on Dolby spec for MPEG-TS would be that it's set to 0.
3382			* Ignore this, if we have EL track and single other video track
3383			* it's safe to assume it's BL. */
3384	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 2 times.	2	if (el_st)
3385		✗	return 0;
3386		2	el_st = st;
3387		2	continue;
3388			}
3389			}
3390
3391	2/2 ✓ Branch 0 taken 2 times. ✓ Branch 1 taken 19 times.	21	if (bl_st)
3392		2	return 0;
3393		19	bl_st = st;
3394			}
3395
3396	3/4 ✓ Branch 0 taken 2 times. ✓ Branch 1 taken 52 times. ✗ Branch 2 not taken. ✓ Branch 3 taken 2 times.	54	if (!el_st || !bl_st)
3397		52	return 0;
3398
3399		2	stg = avformat_stream_group_create(s, AV_STREAM_GROUP_PARAMS_DOLBY_VISION, NULL);
3400	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 2 times.	2	if (!stg)
3401		✗	return AVERROR(ENOMEM);
3402
3403		2	stg->id = el_st->id;
3404
3405		2	err = avformat_stream_group_add_stream(stg, bl_st);
3406	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 2 times.	2	if (err < 0)
3407		✗	return err;
3408
3409		2	err = avformat_stream_group_add_stream(stg, el_st);
3410	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 2 times.	2	if (err < 0)
3411		✗	return err;
3412
3413		2	stg->params.layered_video->el_index = stg->nb_streams - 1;
3414		2	stg->params.layered_video->width = bl_st->codecpar->width;
3415		2	stg->params.layered_video->height = bl_st->codecpar->height;
3416
3417		2	return 0;
3418			}
3419
3420		394	static int matroska_read_header(AVFormatContext *s)
3421			{
3422		394	FFFormatContext *const si = ffformatcontext(s);
3423		394	MatroskaDemuxContext *matroska = s->priv_data;
3424		394	EbmlList *attachments_list = &matroska->attachments;
3425		394	EbmlList *chapters_list = &matroska->chapters;
3426			MatroskaAttachment *attachments;
3427			MatroskaChapter *chapters;
3428		394	uint64_t max_start = 0;
3429			int64_t pos;
3430		394	Ebml ebml = { 0 };
3431			int i, j, res;
3432
3433		394	matroska->ctx = s;
3434		394	matroska->cues_parsing_deferred = 1;
3435
3436			/* First read the EBML header. */
3437	2/4 ✓ Branch 1 taken 394 times. ✗ Branch 2 not taken. ✗ Branch 3 not taken. ✓ Branch 4 taken 394 times.	394	if (ebml_parse(matroska, ebml_syntax, &ebml) || !ebml.doctype) {
3438		✗	av_log(matroska->ctx, AV_LOG_ERROR, "EBML header parsing failed\n");
3439		✗	ebml_free(ebml_syntax, &ebml);
3440		✗	return AVERROR_INVALIDDATA;
3441			}
3442	1/2 ✓ Branch 0 taken 394 times. ✗ Branch 1 not taken.	394	if (ebml.version > EBML_VERSION ||
3443	1/2 ✓ Branch 0 taken 394 times. ✗ Branch 1 not taken.	394	ebml.max_size > sizeof(uint64_t) ||
3444	1/2 ✓ Branch 0 taken 394 times. ✗ Branch 1 not taken.	394	ebml.id_length > sizeof(uint32_t) ||
3445	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 394 times.	394	ebml.doctype_version > 3) {
3446		✗	avpriv_report_missing_feature(matroska->ctx,
3447			"EBML version %"PRIu64", doctype %s, doc version %"PRIu64,
3448			ebml.version, ebml.doctype, ebml.doctype_version);
3449		✗	ebml_free(ebml_syntax, &ebml);
3450		✗	return AVERROR_PATCHWELCOME;
3451	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 394 times.	394	} else if (ebml.doctype_version == 3) {
3452		✗	av_log(matroska->ctx, AV_LOG_WARNING,
3453			"EBML header using unsupported features\n"
3454			"(EBML version %"PRIu64", doctype %s, doc version %"PRIu64")\n",
3455			ebml.version, ebml.doctype, ebml.doctype_version);
3456			}
3457	1/2 ✓ Branch 0 taken 662 times. ✗ Branch 1 not taken.	662	for (i = 0; i < FF_ARRAY_ELEMS(matroska_doctypes); i++)
3458	2/2 ✓ Branch 0 taken 394 times. ✓ Branch 1 taken 268 times.	662	if (!strcmp(ebml.doctype, matroska_doctypes[i]))
3459		394	break;
3460	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 394 times.	394	if (i >= FF_ARRAY_ELEMS(matroska_doctypes)) {
3461		✗	av_log(s, AV_LOG_WARNING, "Unknown EBML doctype '%s'\n", ebml.doctype);
3462		✗	if (matroska->ctx->error_recognition & AV_EF_EXPLODE) {
3463		✗	ebml_free(ebml_syntax, &ebml);
3464		✗	return AVERROR_INVALIDDATA;
3465			}
3466			}
3467		394	matroska->is_webm = !strcmp(ebml.doctype, "webm");
3468
3469		394	ebml_free(ebml_syntax, &ebml);
3470
3471		394	matroska->pkt = si->parse_pkt;
3472
3473			/* The next thing is a segment. */
3474		394	pos = avio_tell(matroska->ctx->pb);
3475		394	res = ebml_parse(matroska, matroska_segments, matroska);
3476			// Try resyncing until we find an EBML_STOP type element.
3477	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 394 times.	394	while (res != 1) {
3478		✗	res = matroska_resync(matroska, pos);
3479		✗	if (res < 0)
3480		✗	return res;
3481		✗	pos = avio_tell(matroska->ctx->pb);
3482		✗	res = ebml_parse(matroska, matroska_segment, matroska);
3483		✗	if (res == AVERROR(EIO)) // EOF is translated to EIO, this exists the loop on EOF
3484		✗	return res;
3485			}
3486			/* Set data_offset as it might be needed later by seek_frame_generic. */
3487	2/2 ✓ Branch 0 taken 390 times. ✓ Branch 1 taken 4 times.	394	if (matroska->current_id == MATROSKA_ID_CLUSTER)
3488		390	si->data_offset = avio_tell(matroska->ctx->pb) - 4;
3489		394	matroska_execute_seekhead(matroska);
3490
3491	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 394 times.	394	if (!matroska->time_scale)
3492		✗	matroska->time_scale = 1000000;
3493	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 394 times.	394	if (isnan(matroska->duration))
3494		✗	matroska->duration = 0;
3495	2/2 ✓ Branch 0 taken 383 times. ✓ Branch 1 taken 11 times.	394	if (matroska->duration)
3496		383	matroska->ctx->duration = matroska->duration * matroska->time_scale *
3497		383	1000 / AV_TIME_BASE;
3498		394	av_dict_set(&s->metadata, "title", matroska->title, 0);
3499		394	av_dict_set(&s->metadata, "encoder", matroska->muxingapp, 0);
3500
3501	2/2 ✓ Branch 0 taken 36 times. ✓ Branch 1 taken 358 times.	394	if (matroska->date_utc.size == 8)
3502		36	matroska_metadata_creation_time(&s->metadata, AV_RB64(matroska->date_utc.data));
3503
3504		394	res = matroska_parse_tracks(s);
3505	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 394 times.	394	if (res < 0)
3506		✗	return res;
3507
3508		394	attachments = attachments_list->elem;
3509	2/2 ✓ Branch 0 taken 14 times. ✓ Branch 1 taken 394 times.	408	for (j = 0; j < attachments_list->nb_elem; j++) {
3510	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 &&
3511	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)) {
3512		✗	av_log(matroska->ctx, AV_LOG_ERROR, "incomplete attachment\n");
3513			} else {
3514		14	AVStream *st = avformat_new_stream(s, NULL);
3515	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 14 times.	14	if (!st)
3516		✗	break;
3517		14	av_dict_set(&st->metadata, "filename", attachments[j].filename, 0);
3518		14	av_dict_set(&st->metadata, "mimetype", attachments[j].mime, 0);
3519	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 14 times.	14	if (attachments[j].description)
3520		✗	av_dict_set(&st->metadata, "title", attachments[j].description, 0);
3521		14	st->codecpar->codec_id = AV_CODEC_ID_NONE;
3522
3523	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++) {
3524	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)) {
3525		✗	st->codecpar->codec_id = mkv_image_mime_tags[i].id;
3526		✗	break;
3527			}
3528			}
3529
3530		14	attachments[j].stream = st;
3531
3532	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 14 times.	14	if (st->codecpar->codec_id != AV_CODEC_ID_NONE) {
3533		✗	res = ff_add_attached_pic(s, st, NULL, &attachments[j].bin.buf, 0);
3534		✗	if (res < 0)
3535		✗	return res;
3536			} else {
3537		14	st->codecpar->codec_type = AVMEDIA_TYPE_ATTACHMENT;
3538	1/2 ✗ Branch 1 not taken. ✓ Branch 2 taken 14 times.	14	if (ff_alloc_extradata(st->codecpar, attachments[j].bin.size))
3539		✗	break;
3540		14	memcpy(st->codecpar->extradata, attachments[j].bin.data,
3541		14	attachments[j].bin.size);
3542
3543	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++) {
3544	1/2 ✗ Branch 1 not taken. ✓ Branch 2 taken 56 times.	56	if (av_strstart(attachments[j].mime, mkv_mime_tags[i].str, NULL)) {
3545		✗	st->codecpar->codec_id = mkv_mime_tags[i].id;
3546		✗	break;
3547			}
3548			}
3549			}
3550			}
3551			}
3552
3553		394	chapters = chapters_list->elem;
3554	2/2 ✓ Branch 0 taken 34 times. ✓ Branch 1 taken 394 times.	428	for (i = 0; i < chapters_list->nb_elem; i++)
3555	4/6 ✓ Branch 0 taken 34 times. ✗ Branch 1 not taken. ✓ Branch 2 taken 34 times. ✗ Branch 3 not taken. ✓ Branch 4 taken 6 times. ✓ Branch 5 taken 28 times.	34	if (chapters[i].start != AV_NOPTS_VALUE && chapters[i].uid &&
3556	1/2 ✓ Branch 0 taken 6 times. ✗ Branch 1 not taken.	6	(max_start == 0 || chapters[i].start > max_start)) {
3557		68	chapters[i].chapter =
3558		34	avpriv_new_chapter(s, chapters[i].uid,
3559		34	(AVRational) { 1, 1000000000 },
3560		34	chapters[i].start, chapters[i].end,
3561		34	chapters[i].title);
3562		34	max_start = chapters[i].start;
3563			}
3564
3565		394	matroska_add_index_entries(matroska);
3566
3567		394	matroska_convert_tags(s);
3568
3569		394	res = matroska_parse_dovi_streams(s);
3570	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 394 times.	394	if (res < 0)
3571		✗	return res;
3572
3573		394	return 0;
3574			}
3575
3576			/*
3577			* Put one packet in an application-supplied AVPacket struct.
3578			* Returns 0 on success or -1 on failure.
3579			*/
3580		60622	static int matroska_deliver_packet(MatroskaDemuxContext *matroska,
3581			AVPacket *pkt)
3582			{
3583	2/2 ✓ Branch 0 taken 29682 times. ✓ Branch 1 taken 30940 times.	60622	if (matroska->queue.head) {
3584		29682	MatroskaTrack *tracks = matroska->tracks.elem;
3585			MatroskaTrack *track;
3586
3587		29682	ff_packet_list_get(&matroska->queue, pkt);
3588		29682	track = &tracks[pkt->stream_index];
3589	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 29682 times.	29682	if (track->has_palette) {
3590		✗	uint8_t *pal = av_packet_new_side_data(pkt, AV_PKT_DATA_PALETTE, AVPALETTE_SIZE);
3591		✗	if (!pal) {
3592		✗	av_log(matroska->ctx, AV_LOG_ERROR, "Cannot append palette to packet\n");
3593			} else {
3594		✗	memcpy(pal, track->palette, AVPALETTE_SIZE);
3595			}
3596		✗	track->has_palette = 0;
3597			}
3598		29682	return 0;
3599			}
3600
3601		30940	return -1;
3602			}
3603
3604			/*
3605			* Free all packets in our internal queue.
3606			*/
3607		1232	static void matroska_clear_queue(MatroskaDemuxContext *matroska)
3608			{
3609		1232	ff_packet_list_free(&matroska->queue);
3610		1232	}
3611
3612		29965	static int matroska_parse_laces(MatroskaDemuxContext *matroska, uint8_t **buf,
3613			int size, int type, AVIOContext *pb,
3614			uint32_t lace_size[256], int *laces)
3615			{
3616			int n;
3617		29965	uint8_t *data = *buf;
3618
3619	2/2 ✓ Branch 0 taken 29877 times. ✓ Branch 1 taken 88 times.	29965	if (!type) {
3620		29877	*laces = 1;
3621		29877	lace_size[0] = size;
3622		29877	return 0;
3623			}
3624
3625	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 88 times.	88	if (size <= 0)
3626		✗	return AVERROR_INVALIDDATA;
3627
3628		88	*laces = *data + 1;
3629		88	data += 1;
3630		88	size -= 1;
3631
3632	3/4 ✓ Branch 0 taken 7 times. ✓ Branch 1 taken 17 times. ✓ Branch 2 taken 64 times. ✗ Branch 3 not taken.	88	switch (type) {
3633		7	case 0x1: /* Xiph lacing */
3634			{
3635			uint8_t temp;
3636		7	uint32_t total = 0;
3637	2/2 ✓ Branch 0 taken 42 times. ✓ Branch 1 taken 7 times.	49	for (n = 0; n < *laces - 1; n++) {
3638		42	lace_size[n] = 0;
3639
3640			do {
3641	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 47 times.	47	if (size <= total)
3642		✗	return AVERROR_INVALIDDATA;
3643		47	temp = *data;
3644		47	total += temp;
3645		47	lace_size[n] += temp;
3646		47	data += 1;
3647		47	size -= 1;
3648	2/2 ✓ Branch 0 taken 5 times. ✓ Branch 1 taken 42 times.	47	} while (temp == 0xff);
3649			}
3650	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 7 times.	7	if (size < total)
3651		✗	return AVERROR_INVALIDDATA;
3652
3653		7	lace_size[n] = size - total;
3654		7	break;
3655			}
3656
3657		17	case 0x2: /* fixed-size lacing */
3658	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 17 times.	17	if (size % (*laces))
3659		✗	return AVERROR_INVALIDDATA;
3660	2/2 ✓ Branch 0 taken 81 times. ✓ Branch 1 taken 17 times.	98	for (n = 0; n < *laces; n++)
3661		81	lace_size[n] = size / *laces;
3662		17	break;
3663
3664		64	case 0x3: /* EBML lacing */
3665			{
3666			uint64_t num;
3667			uint64_t total;
3668			int offset;
3669
3670		64	avio_skip(pb, 4);
3671
3672		64	n = ebml_read_num(matroska, pb, 8, &num, 1);
3673	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 64 times.	64	if (n < 0)
3674		✗	return n;
3675	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 64 times.	64	if (num > INT_MAX)
3676		✗	return AVERROR_INVALIDDATA;
3677
3678		64	total = lace_size[0] = num;
3679		64	offset = n;
3680	2/2 ✓ Branch 0 taken 294 times. ✓ Branch 1 taken 64 times.	358	for (n = 1; n < *laces - 1; n++) {
3681			int64_t snum;
3682			int r;
3683		294	r = matroska_ebmlnum_sint(matroska, pb, &snum);
3684	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 294 times.	294	if (r < 0)
3685		✗	return r;
3686	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 294 times.	294	if (lace_size[n - 1] + snum > (uint64_t)INT_MAX)
3687		✗	return AVERROR_INVALIDDATA;
3688
3689		294	lace_size[n] = lace_size[n - 1] + snum;
3690		294	total += lace_size[n];
3691		294	offset += r;
3692			}
3693		64	data += offset;
3694		64	size -= offset;
3695	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 64 times.	64	if (size < total)
3696		✗	return AVERROR_INVALIDDATA;
3697
3698		64	lace_size[*laces - 1] = size - total;
3699		64	break;
3700			}
3701			}
3702
3703		88	*buf = data;
3704
3705		88	return 0;
3706			}
3707
3708		✗	static int matroska_parse_rm_audio(MatroskaDemuxContext *matroska,
3709			MatroskaTrack *track, AVStream *st,
3710			uint8_t *data, int size, uint64_t timecode,
3711			int64_t pos)
3712			{
3713		✗	const int a = st->codecpar->block_align;
3714		✗	const int sps = track->audio.sub_packet_size;
3715		✗	const int cfs = track->audio.coded_framesize;
3716		✗	const int h = track->audio.sub_packet_h;
3717		✗	const int w = track->audio.frame_size;
3718		✗	int y = track->audio.sub_packet_cnt;
3719			int x;
3720
3721		✗	if (!track->audio.pkt_cnt) {
3722		✗	if (track->audio.sub_packet_cnt == 0)
3723		✗	track->audio.buf_timecode = timecode;
3724		✗	if (st->codecpar->codec_id == AV_CODEC_ID_RA_288) {
3725		✗	if (size < cfs * h / 2) {
3726		✗	av_log(matroska->ctx, AV_LOG_ERROR,
3727			"Corrupt int4 RM-style audio packet size\n");
3728		✗	return AVERROR_INVALIDDATA;
3729			}
3730		✗	for (x = 0; x < h / 2; x++)
3731		✗	memcpy(track->audio.buf + x * 2 * w + y * cfs,
3732		✗	data + x * cfs, cfs);
3733		✗	} else if (st->codecpar->codec_id == AV_CODEC_ID_SIPR) {
3734		✗	if (size < w) {
3735		✗	av_log(matroska->ctx, AV_LOG_ERROR,
3736			"Corrupt sipr RM-style audio packet size\n");
3737		✗	return AVERROR_INVALIDDATA;
3738			}
3739		✗	memcpy(track->audio.buf + y * w, data, w);
3740			} else {
3741		✗	if (size < w) {
3742		✗	av_log(matroska->ctx, AV_LOG_ERROR,
3743			"Corrupt generic RM-style audio packet size\n");
3744		✗	return AVERROR_INVALIDDATA;
3745			}
3746		✗	for (x = 0; x < w / sps; x++)
3747		✗	memcpy(track->audio.buf +
3748		✗	sps * (h * x + ((h + 1) / 2) * (y & 1) + (y >> 1)),
3749		✗	data + x * sps, sps);
3750			}
3751
3752		✗	if (++track->audio.sub_packet_cnt >= h) {
3753		✗	if (st->codecpar->codec_id == AV_CODEC_ID_SIPR)
3754		✗	ff_rm_reorder_sipr_data(track->audio.buf, h, w);
3755		✗	track->audio.sub_packet_cnt = 0;
3756		✗	track->audio.pkt_cnt = h * w / a;
3757			}
3758			}
3759
3760		✗	while (track->audio.pkt_cnt) {
3761			int ret;
3762		✗	AVPacket *pkt = matroska->pkt;
3763
3764		✗	ret = av_new_packet(pkt, a);
3765		✗	if (ret < 0) {
3766		✗	return ret;
3767			}
3768		✗	memcpy(pkt->data,
3769		✗	track->audio.buf + a * (h * w / a - track->audio.pkt_cnt--),
3770			a);
3771		✗	pkt->pts = track->audio.buf_timecode;
3772		✗	track->audio.buf_timecode = AV_NOPTS_VALUE;
3773		✗	pkt->pos = pos;
3774		✗	pkt->stream_index = st->index;
3775		✗	ret = ff_packet_list_put(&matroska->queue, pkt, NULL, 0);
3776		✗	if (ret < 0) {
3777		✗	av_packet_unref(pkt);
3778		✗	return AVERROR(ENOMEM);
3779			}
3780			}
3781
3782		✗	return 0;
3783			}
3784
3785			/* reconstruct full wavpack blocks from mangled matroska ones */
3786		24	static int matroska_parse_wavpack(MatroskaTrack *track,
3787			uint8_t **data, int *size)
3788			{
3789		24	uint8_t *dst = NULL;
3790		24	uint8_t *src = *data;
3791		24	int dstlen = 0;
3792		24	int srclen = *size;
3793			uint32_t samples;
3794			uint16_t ver;
3795		24	int ret, offset = 0;
3796
3797	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 24 times.	24	if (srclen < 12)
3798		✗	return AVERROR_INVALIDDATA;
3799
3800			av_assert1(track->stream->codecpar->extradata_size >= 2);
3801		24	ver = AV_RL16(track->stream->codecpar->extradata);
3802
3803		24	samples = AV_RL32(src);
3804		24	src += 4;
3805		24	srclen -= 4;
3806
3807	2/2 ✓ Branch 0 taken 112 times. ✓ Branch 1 taken 24 times.	136	while (srclen >= 8) {
3808			int multiblock;
3809			uint32_t blocksize;
3810			uint8_t *tmp;
3811
3812		112	uint32_t flags = AV_RL32(src);
3813		112	uint32_t crc = AV_RL32(src + 4);
3814		112	src += 8;
3815		112	srclen -= 8;
3816
3817		112	multiblock = (flags & 0x1800) != 0x1800;
3818	2/2 ✓ Branch 0 taken 110 times. ✓ Branch 1 taken 2 times.	112	if (multiblock) {
3819	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 110 times.	110	if (srclen < 4) {
3820		✗	ret = AVERROR_INVALIDDATA;
3821		✗	goto fail;
3822			}
3823		110	blocksize = AV_RL32(src);
3824		110	src += 4;
3825		110	srclen -= 4;
3826			} else
3827		2	blocksize = srclen;
3828
3829	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 112 times.	112	if (blocksize > srclen) {
3830		✗	ret = AVERROR_INVALIDDATA;
3831		✗	goto fail;
3832			}
3833
3834		112	tmp = av_realloc(dst, dstlen + blocksize + 32 + AV_INPUT_BUFFER_PADDING_SIZE);
3835	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 112 times.	112	if (!tmp) {
3836		✗	ret = AVERROR(ENOMEM);
3837		✗	goto fail;
3838			}
3839		112	dst = tmp;
3840		112	dstlen += blocksize + 32;
3841
3842		112	AV_WL32(dst + offset, MKTAG('w', 'v', 'p', 'k')); // tag
3843		112	AV_WL32(dst + offset + 4, blocksize + 24); // blocksize - 8
3844		112	AV_WL16(dst + offset + 8, ver); // version
3845		112	AV_WL16(dst + offset + 10, 0); // track/index_no
3846		112	AV_WL32(dst + offset + 12, 0); // total samples
3847		112	AV_WL32(dst + offset + 16, 0); // block index
3848		112	AV_WL32(dst + offset + 20, samples); // number of samples
3849		112	AV_WL32(dst + offset + 24, flags); // flags
3850		112	AV_WL32(dst + offset + 28, crc); // crc
3851		112	memcpy(dst + offset + 32, src, blocksize); // block data
3852
3853		112	src += blocksize;
3854		112	srclen -= blocksize;
3855		112	offset += blocksize + 32;
3856			}
3857
3858		24	memset(dst + dstlen, 0, AV_INPUT_BUFFER_PADDING_SIZE);
3859
3860		24	*data = dst;
3861		24	*size = dstlen;
3862
3863		24	return 0;
3864
3865		✗	fail:
3866		✗	av_freep(&dst);
3867		✗	return ret;
3868			}
3869
3870		11	static int matroska_parse_prores(MatroskaTrack *track,
3871			uint8_t **data, int *size)
3872			{
3873			uint8_t *dst;
3874		11	int dstlen = *size + 8;
3875
3876		11	dst = av_malloc(dstlen + AV_INPUT_BUFFER_PADDING_SIZE);
3877	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 11 times.	11	if (!dst)
3878		✗	return AVERROR(ENOMEM);
3879
3880		11	AV_WB32(dst, dstlen);
3881		11	AV_WB32(dst + 4, MKBETAG('i', 'c', 'p', 'f'));
3882		11	memcpy(dst + 8, *data, dstlen - 8);
3883		11	memset(dst + dstlen, 0, AV_INPUT_BUFFER_PADDING_SIZE);
3884
3885		11	*data = dst;
3886		11	*size = dstlen;
3887
3888		11	return 0;
3889			}
3890
3891		90	static int matroska_parse_webvtt(MatroskaDemuxContext *matroska,
3892			MatroskaTrack *track,
3893			AVStream *st,
3894			uint8_t *data, int data_len,
3895			uint64_t timecode,
3896			uint64_t duration,
3897			int64_t pos)
3898			{
3899		90	AVPacket *pkt = matroska->pkt;
3900			uint8_t *id, *settings, *text, *buf;
3901			int id_len, settings_len, text_len;
3902			uint8_t *p, *q;
3903			int err;
3904
3905	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 90 times.	90	if (data_len <= 0)
3906		✗	return AVERROR_INVALIDDATA;
3907
3908		90	p = data;
3909		90	q = data + data_len;
3910
3911		90	id = p;
3912		90	id_len = -1;
3913	1/2 ✓ Branch 0 taken 192 times. ✗ Branch 1 not taken.	192	while (p < q) {
3914	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') {
3915		90	id_len = p - id;
3916	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 90 times.	90	if (*p == '\r')
3917		✗	p++;
3918		90	break;
3919			}
3920		102	p++;
3921			}
3922
3923	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')
3924		✗	return AVERROR_INVALIDDATA;
3925		90	p++;
3926
3927		90	settings = p;
3928		90	settings_len = -1;
3929	1/2 ✓ Branch 0 taken 546 times. ✗ Branch 1 not taken.	546	while (p < q) {
3930	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') {
3931		90	settings_len = p - settings;
3932	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 90 times.	90	if (*p == '\r')
3933		✗	p++;
3934		90	break;
3935			}
3936		456	p++;
3937			}
3938
3939	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')
3940		✗	return AVERROR_INVALIDDATA;
3941		90	p++;
3942
3943		90	text = p;
3944		90	text_len = q - p;
3945	1/2 ✓ Branch 0 taken 90 times. ✗ Branch 1 not taken.	90	while (text_len > 0) {
3946		90	const int len = text_len - 1;
3947		90	const uint8_t c = p[len];
3948	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')
3949		90	break;
3950		✗	text_len = len;
3951			}
3952
3953		90	err = av_new_packet(pkt, text_len);
3954	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 90 times.	90	if (err < 0) {
3955		✗	return err;
3956			}
3957
3958		90	memcpy(pkt->data, text, text_len);
3959
3960	2/2 ✓ Branch 0 taken 12 times. ✓ Branch 1 taken 78 times.	90	if (id_len > 0) {
3961		12	buf = av_packet_new_side_data(pkt,
3962			AV_PKT_DATA_WEBVTT_IDENTIFIER,
3963			id_len);
3964	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 12 times.	12	if (!buf) {
3965		✗	av_packet_unref(pkt);
3966		✗	return AVERROR(ENOMEM);
3967			}
3968		12	memcpy(buf, id, id_len);
3969			}
3970
3971	2/2 ✓ Branch 0 taken 24 times. ✓ Branch 1 taken 66 times.	90	if (settings_len > 0) {
3972		24	buf = av_packet_new_side_data(pkt,
3973			AV_PKT_DATA_WEBVTT_SETTINGS,
3974			settings_len);
3975	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 24 times.	24	if (!buf) {
3976		✗	av_packet_unref(pkt);
3977		✗	return AVERROR(ENOMEM);
3978			}
3979		24	memcpy(buf, settings, settings_len);
3980			}
3981
3982			// Do we need this for subtitles?
3983			// pkt->flags = AV_PKT_FLAG_KEY;
3984
3985		90	pkt->stream_index = st->index;
3986		90	pkt->pts = timecode;
3987
3988			// Do we need this for subtitles?
3989			// pkt->dts = timecode;
3990
3991		90	pkt->duration = duration;
3992		90	pkt->pos = pos;
3993
3994		90	err = ff_packet_list_put(&matroska->queue, pkt, NULL, 0);
3995	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 90 times.	90	if (err < 0) {
3996		✗	av_packet_unref(pkt);
3997		✗	return AVERROR(ENOMEM);
3998			}
3999
4000		90	return 0;
4001			}
4002
4003		136	static int matroska_parse_block_additional(MatroskaDemuxContext *matroska,
4004			MatroskaTrack *track, AVPacket *pkt,
4005			const uint8_t *data, int size, uint64_t id)
4006			{
4007		136	const EbmlList *mappings_list = &track->block_addition_mappings;
4008		136	MatroskaBlockAdditionMapping *mappings = mappings_list->elem, *mapping = NULL;
4009			uint8_t *side_data;
4010			int res;
4011
4012	4/6 ✓ Branch 0 taken 12 times. ✓ Branch 1 taken 124 times. ✓ Branch 2 taken 12 times. ✗ Branch 3 not taken. ✗ Branch 4 not taken. ✓ Branch 5 taken 12 times.	136	if (!matroska->is_webm && track->max_block_additional_id && id > track->max_block_additional_id) {
4013		✗	int strict = matroska->ctx->strict_std_compliance >= FF_COMPLIANCE_STRICT;
4014		✗	av_log(matroska->ctx, strict ? AV_LOG_ERROR : AV_LOG_WARNING,
4015			"BlockAddID %"PRIu64" is higher than the reported MaxBlockAdditionID %"PRIu64" "
4016			"for Track with TrackNumber %"PRIu64"\n", id, track->max_block_additional_id,
4017			track->num);
4018		✗	if (strict)
4019		✗	return AVERROR_INVALIDDATA;
4020			}
4021
4022	2/2 ✓ Branch 0 taken 4 times. ✓ Branch 1 taken 132 times.	136	for (int i = 0; i < mappings_list->nb_elem; i++) {
4023	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 4 times.	4	if (id != mappings[i].value)
4024		✗	continue;
4025		4	mapping = &mappings[i];
4026		4	break;
4027			}
4028
4029	5/6 ✓ Branch 0 taken 6 times. ✓ Branch 1 taken 130 times. ✓ Branch 2 taken 2 times. ✓ Branch 3 taken 4 times. ✗ Branch 4 not taken. ✓ Branch 5 taken 2 times.	136	if (id != 1 && !matroska->is_webm && !mapping) {
4030		✗	av_log(matroska->ctx, AV_LOG_WARNING, "BlockAddID %"PRIu64" has no mapping. Skipping\n", id);
4031		✗	return 0;
4032			}
4033
4034	3/4 ✓ Branch 0 taken 4 times. ✓ Branch 1 taken 132 times. ✓ Branch 2 taken 4 times. ✗ Branch 3 not taken.	136	if (mapping && mapping->type)
4035		4	id = mapping->type;
4036
4037	2/2 ✓ Branch 0 taken 6 times. ✓ Branch 1 taken 130 times.	136	switch (id) {
4038		6	case MATROSKA_BLOCK_ADD_ID_TYPE_ITU_T_T35: {
4039			GetByteContext bc;
4040			int country_code, provider_code;
4041			int provider_oriented_code, application_identifier;
4042			size_t hdrplus_size;
4043			AVDynamicHDRPlus *hdrplus;
4044
4045	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 6 times.	6	if (size < 6)
4046		6	break; //ignore
4047
4048		6	bytestream2_init(&bc, data, size);
4049
4050			/* ITU-T T.35 metadata */
4051		6	country_code = bytestream2_get_byteu(&bc);
4052	1/3 ✓ Branch 0 taken 6 times. ✗ Branch 1 not taken. ✗ Branch 2 not taken.	6	switch (country_code) {
4053		6	case ITU_T_T35_COUNTRY_CODE_US:
4054		6	provider_code = bytestream2_get_be16u(&bc);
4055
4056	1/3 ✓ Branch 0 taken 6 times. ✗ Branch 1 not taken. ✗ Branch 2 not taken.	6	switch (provider_code) {
4057		6	case ITU_T_T35_PROVIDER_CODE_SAMSUNG: {
4058		6	provider_oriented_code = bytestream2_get_be16u(&bc);
4059		6	application_identifier = bytestream2_get_byteu(&bc);
4060
4061	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)
4062			break; // ignore
4063
4064		6	hdrplus = av_dynamic_hdr_plus_alloc(&hdrplus_size);
4065	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 6 times.	6	if (!hdrplus)
4066		✗	return AVERROR(ENOMEM);
4067
4068	1/2 ✓ Branch 1 taken 6 times. ✗ Branch 2 not taken.	6	if ((res = av_dynamic_hdr_plus_from_t35(hdrplus, bc.buffer,
4069	1/2 ✗ Branch 1 not taken. ✓ Branch 2 taken 6 times.	12	bytestream2_get_bytes_left(&bc))) < 0 ||
4070		6	(res = av_packet_add_side_data(pkt, AV_PKT_DATA_DYNAMIC_HDR10_PLUS,
4071			(uint8_t *)hdrplus, hdrplus_size)) < 0) {
4072		✗	av_free(hdrplus);
4073		✗	return res;
4074			}
4075
4076		6	break;
4077			}
4078		✗	case ITU_T_T35_PROVIDER_CODE_SMPTE: {
4079			AVDynamicHDRSmpte2094App5 *hdr_smpte_2094_app5;
4080			size_t hdr_smpte_2094_app5_size;
4081
4082		✗	provider_oriented_code = bytestream2_get_be16u(&bc);
4083		✗	if (provider_oriented_code != 1)
4084		✗	break; // ignore
4085
4086		✗	hdr_smpte_2094_app5 = av_dynamic_hdr_smpte2094_app5_alloc(&hdr_smpte_2094_app5_size);
4087		✗	if (!hdr_smpte_2094_app5)
4088		✗	return AVERROR(ENOMEM);
4089
4090		✗	if ((res = av_dynamic_hdr_smpte2094_app5_from_t35(hdr_smpte_2094_app5,
4091			bc.buffer,
4092		✗	bytestream2_get_bytes_left(&bc))) < 0 ||
4093		✗	(res = av_packet_add_side_data(pkt,
4094			AV_PKT_DATA_DYNAMIC_HDR_SMPTE_2094_APP5,
4095			(uint8_t *)hdr_smpte_2094_app5,
4096			hdr_smpte_2094_app5_size)) < 0) {
4097		✗	av_free(hdr_smpte_2094_app5);
4098		✗	return res;
4099			}
4100
4101		✗	break;
4102			}
4103		✗	default:
4104		✗	break;
4105			}
4106		6	break;
4107		✗	case ITU_T_T35_COUNTRY_CODE_UK:
4108		✗	bytestream2_skipu(&bc, 1); // t35_uk_country_code_second_octet
4109		✗	if (bytestream2_get_bytes_left(&bc) < 2)
4110		✗	return AVERROR_INVALIDDATA;
4111
4112		✗	provider_code = bytestream2_get_be16u(&bc);
4113
4114		✗	switch (provider_code) {
4115		✗	case ITU_T_T35_PROVIDER_CODE_VNOVA: {
4116			uint8_t *data;
4117		✗	int left = bytestream2_get_bytes_left(&bc);
4118
4119		✗	if (left < 2)
4120		✗	return AVERROR_INVALIDDATA;
4121		✗	data = av_packet_new_side_data(pkt, AV_PKT_DATA_LCEVC, left);
4122		✗	if (!data)
4123		✗	return AVERROR(ENOMEM);
4124
4125		✗	bytestream2_get_bufferu(&bc, data, left);
4126
4127		✗	return 0;
4128			}
4129		✗	default:
4130		✗	break;
4131			}
4132		✗	break;
4133		✗	default:
4134		✗	break;
4135			}
4136		6	break;
4137			}
4138		130	default:
4139		130	side_data = av_packet_new_side_data(pkt, AV_PKT_DATA_MATROSKA_BLOCKADDITIONAL,
4140			size + (size_t)8);
4141	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 130 times.	130	if (!side_data)
4142		✗	return AVERROR(ENOMEM);
4143
4144		130	AV_WB64(side_data, id);
4145		130	memcpy(side_data + 8, data, size);
4146		130	break;
4147			}
4148
4149		136	return 0;
4150			}
4151
4152		30339	static int matroska_parse_frame(MatroskaDemuxContext *matroska,
4153			MatroskaTrack *track, AVStream *st,
4154			AVBufferRef *buf, uint8_t *data, int pkt_size,
4155			uint64_t timecode, uint64_t lace_duration,
4156			int64_t pos, int is_keyframe,
4157			MatroskaBlockMore *blockmore, int nb_blockmore,
4158			int64_t discard_padding)
4159			{
4160		30339	uint8_t *pkt_data = data;
4161		30339	int res = 0;
4162		30339	AVPacket *pkt = matroska->pkt;
4163
4164	2/2 ✓ Branch 0 taken 24 times. ✓ Branch 1 taken 30315 times.	30339	if (st->codecpar->codec_id == AV_CODEC_ID_WAVPACK) {
4165		24	res = matroska_parse_wavpack(track, &pkt_data, &pkt_size);
4166	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 24 times.	24	if (res < 0) {
4167		✗	av_log(matroska->ctx, AV_LOG_ERROR,
4168			"Error parsing a wavpack block.\n");
4169		✗	goto fail;
4170			}
4171	2/2 ✓ Branch 0 taken 2 times. ✓ Branch 1 taken 22 times.	24	if (!buf)
4172		2	av_freep(&data);
4173		24	buf = NULL;
4174			}
4175
4176	2/2 ✓ Branch 0 taken 13 times. ✓ Branch 1 taken 30326 times.	30339	if (st->codecpar->codec_id == AV_CODEC_ID_PRORES &&
4177	2/2 ✓ Branch 0 taken 11 times. ✓ Branch 1 taken 2 times.	13	AV_RB32(pkt_data + 4) != MKBETAG('i', 'c', 'p', 'f')) {
4178		11	res = matroska_parse_prores(track, &pkt_data, &pkt_size);
4179	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 11 times.	11	if (res < 0) {
4180		✗	av_log(matroska->ctx, AV_LOG_ERROR,
4181			"Error parsing a prores block.\n");
4182		✗	goto fail;
4183			}
4184	2/2 ✓ Branch 0 taken 2 times. ✓ Branch 1 taken 9 times.	11	if (!buf)
4185		2	av_freep(&data);
4186		11	buf = NULL;
4187			}
4188
4189	1/4 ✗ Branch 0 not taken. ✓ Branch 1 taken 30339 times. ✗ Branch 2 not taken. ✗ Branch 3 not taken.	30339	if (!pkt_size && !nb_blockmore)
4190		✗	goto no_output;
4191
4192	5/6 ✓ Branch 0 taken 27121 times. ✓ Branch 1 taken 3218 times. ✓ Branch 2 taken 12 times. ✓ Branch 3 taken 27109 times. ✗ Branch 4 not taken. ✓ Branch 5 taken 12 times.	30339	if (!matroska->is_webm && nb_blockmore && !track->max_block_additional_id) {
4193		✗	int strict = matroska->ctx->strict_std_compliance >= FF_COMPLIANCE_STRICT;
4194		✗	av_log(matroska->ctx, strict ? AV_LOG_ERROR : AV_LOG_WARNING,
4195			"Unexpected BlockAdditions found in a Block from Track with TrackNumber %"PRIu64" "
4196			"where MaxBlockAdditionID is 0\n", track->num);
4197		✗	if (strict) {
4198		✗	res = AVERROR_INVALIDDATA;
4199		✗	goto fail;
4200			}
4201			}
4202
4203	2/2 ✓ Branch 0 taken 112 times. ✓ Branch 1 taken 30227 times.	30339	if (!buf)
4204		112	pkt->buf = av_buffer_create(pkt_data, pkt_size + AV_INPUT_BUFFER_PADDING_SIZE,
4205			NULL, NULL, 0);
4206			else
4207		30227	pkt->buf = av_buffer_ref(buf);
4208
4209	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 30339 times.	30339	if (!pkt->buf) {
4210		✗	res = AVERROR(ENOMEM);
4211		✗	goto fail;
4212			}
4213
4214		30339	pkt->data = pkt_data;
4215		30339	pkt->size = pkt_size;
4216		30339	pkt->flags = is_keyframe;
4217		30339	pkt->stream_index = st->index;
4218
4219	2/2 ✓ Branch 0 taken 136 times. ✓ Branch 1 taken 30339 times.	30475	for (int i = 0; i < nb_blockmore; i++) {
4220		136	MatroskaBlockMore *more = &blockmore[i];
4221
4222	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 136 times.	136	if (!more->additional.size)
4223		✗	continue;
4224
4225		136	res = matroska_parse_block_additional(matroska, track, pkt, more->additional.data,
4226			more->additional.size, more->additional_id);
4227	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 136 times.	136	if (res < 0) {
4228		✗	av_packet_unref(pkt);
4229		✗	return res;
4230			}
4231			}
4232
4233	2/2 ✓ Branch 0 taken 55 times. ✓ Branch 1 taken 30284 times.	30339	if (discard_padding) {
4234		55	uint8_t *side_data = av_packet_new_side_data(pkt,
4235			AV_PKT_DATA_SKIP_SAMPLES,
4236			10);
4237	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 55 times.	55	if (!side_data) {
4238		✗	av_packet_unref(pkt);
4239		✗	return AVERROR(ENOMEM);
4240			}
4241		55	discard_padding = av_rescale_q(discard_padding,
4242		55	(AVRational){1, 1000000000},
4243		55	(AVRational){1, st->codecpar->sample_rate});
4244	1/2 ✓ Branch 0 taken 55 times. ✗ Branch 1 not taken.	55	if (discard_padding > 0) {
4245		55	AV_WL32A(side_data + 4, discard_padding);
4246			} else {
4247		✗	AV_WL32A(side_data, -discard_padding);
4248			}
4249			}
4250
4251	2/2 ✓ Branch 0 taken 429 times. ✓ Branch 1 taken 29910 times.	30339	if (track->ms_compat)
4252		429	pkt->dts = timecode;
4253			else
4254		29910	pkt->pts = timecode;
4255		30339	pkt->pos = pos;
4256		30339	pkt->duration = lace_duration;
4257
4258		30339	res = ff_packet_list_put(&matroska->queue, pkt, NULL, 0);
4259	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 30339 times.	30339	if (res < 0) {
4260		✗	av_packet_unref(pkt);
4261		✗	return AVERROR(ENOMEM);
4262			}
4263
4264		30339	return 0;
4265
4266		✗	no_output:
4267		✗	fail:
4268		✗	if (!buf)
4269		✗	av_free(pkt_data);
4270		✗	return res;
4271			}
4272
4273		30825	static int matroska_parse_block(MatroskaDemuxContext *matroska, AVBufferRef *buf, uint8_t *data,
4274			int size, int64_t pos, uint64_t cluster_time,
4275			uint64_t block_duration, int is_keyframe,
4276			MatroskaBlockMore *blockmore, int nb_blockmore,
4277			int64_t cluster_pos, int64_t discard_padding)
4278			{
4279		30825	uint64_t timecode = AV_NOPTS_VALUE;
4280			MatroskaTrack *track;
4281			FFIOContext pb;
4282		30825	int res = 0;
4283			AVStream *st;
4284			int16_t block_time;
4285			uint32_t lace_size[256];
4286		30825	int n, flags, laces = 0;
4287			uint64_t num;
4288			int trust_default_duration;
4289
4290			av_assert1(buf);
4291
4292		30825	ffio_init_read_context(&pb, data, size);
4293
4294	1/2 ✗ Branch 1 not taken. ✓ Branch 2 taken 30825 times.	30825	if ((n = ebml_read_num(matroska, &pb.pub, 8, &num, 1)) < 0)
4295		✗	return n;
4296		30825	data += n;
4297		30825	size -= n;
4298
4299		30825	track = matroska_find_track_by_num(matroska, num);
4300	3/4 ✓ Branch 0 taken 30824 times. ✓ Branch 1 taken 1 times. ✗ Branch 2 not taken. ✓ Branch 3 taken 30824 times.	30825	if (!track || size < 3)
4301		1	return AVERROR_INVALIDDATA;
4302
4303	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 30824 times.	30824	if (!(st = track->stream)) {
4304		✗	av_log(matroska->ctx, AV_LOG_VERBOSE,
4305			"No stream associated to TrackNumber %"PRIu64". "
4306			"Ignoring Block with this TrackNumber.\n", num);
4307		✗	return 0;
4308			}
4309
4310	2/2 ✓ Branch 0 taken 311 times. ✓ Branch 1 taken 30513 times.	30824	if (st->discard >= AVDISCARD_ALL)
4311		311	return res;
4312	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 30513 times.	30513	if (block_duration > INT64_MAX)
4313		✗	block_duration = INT64_MAX;
4314
4315		30513	block_time = sign_extend(AV_RB16(data), 16);
4316		30513	data += 2;
4317		30513	flags = *data++;
4318		30513	size -= 3;
4319	2/2 ✓ Branch 0 taken 30067 times. ✓ Branch 1 taken 446 times.	30513	if (is_keyframe == -1)
4320		30067	is_keyframe = flags & 0x80 ? AV_PKT_FLAG_KEY : 0;
4321
4322	3/4 ✓ Branch 0 taken 30513 times. ✗ Branch 1 not taken. ✓ Branch 2 taken 79 times. ✓ Branch 3 taken 30434 times.	30513	if (cluster_time != (uint64_t) -1 &&
4323	2/2 ✓ Branch 0 taken 63 times. ✓ Branch 1 taken 16 times.	79	(block_time >= 0 || cluster_time >= -block_time)) {
4324		30497	uint64_t timecode_cluster_in_track_tb = (double) cluster_time / track->time_scale;
4325		30497	timecode = timecode_cluster_in_track_tb + block_time - track->codec_delay_in_track_tb;
4326	2/2 ✓ Branch 0 taken 128 times. ✓ Branch 1 taken 30369 times.	30497	if (track->type == MATROSKA_TRACK_TYPE_SUBTITLE &&
4327	2/2 ✓ Branch 0 taken 6 times. ✓ Branch 1 taken 122 times.	128	timecode < track->end_timecode)
4328		6	is_keyframe = 0; /* overlapping subtitles are not key frame */
4329	2/2 ✓ Branch 0 taken 26821 times. ✓ Branch 1 taken 3676 times.	30497	if (is_keyframe) {
4330		26821	ff_reduce_index(matroska->ctx, st->index);
4331		26821	av_add_index_entry(st, cluster_pos, timecode, 0, 0,
4332			AVINDEX_KEYFRAME);
4333			}
4334			}
4335
4336	2/2 ✓ Branch 0 taken 593 times. ✓ Branch 1 taken 29920 times.	30513	if (matroska->skip_to_keyframe &&
4337	1/2 ✓ Branch 0 taken 593 times. ✗ Branch 1 not taken.	593	track->type != MATROSKA_TRACK_TYPE_SUBTITLE) {
4338			// Compare signed timecodes. Timecode may be negative due to codec delay
4339			// offset. We don't support timestamps greater than int64_t anyway - see
4340			// AVPacket's pts.
4341	2/2 ✓ Branch 0 taken 548 times. ✓ Branch 1 taken 45 times.	593	if ((int64_t)timecode < (int64_t)matroska->skip_to_timecode)
4342		548	return res;
4343	1/2 ✓ Branch 0 taken 45 times. ✗ Branch 1 not taken.	45	if (is_keyframe)
4344		45	matroska->skip_to_keyframe = 0;
4345		✗	else if (!ffstream(st)->skip_to_keyframe) {
4346		✗	av_log(matroska->ctx, AV_LOG_ERROR, "File is broken, keyframes not correctly marked!\n");
4347		✗	matroska->skip_to_keyframe = 0;
4348			}
4349			}
4350
4351		29965	res = matroska_parse_laces(matroska, &data, size, (flags & 0x06) >> 1,
4352			&pb.pub, lace_size, &laces);
4353	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 29965 times.	29965	if (res < 0) {
4354		✗	av_log(matroska->ctx, AV_LOG_ERROR, "Error parsing frame sizes.\n");
4355		✗	return res;
4356			}
4357
4358		29965	trust_default_duration = track->default_duration != 0;
4359	1/4 ✗ Branch 0 not taken. ✓ Branch 1 taken 29965 times. ✗ Branch 2 not taken. ✗ Branch 3 not taken.	29965	if (track->audio.samplerate == 8000 && trust_default_duration) {
4360			// If this is needed for more codecs, then add them here
4361		✗	if (st->codecpar->codec_id == AV_CODEC_ID_AC3) {
4362		✗	if (track->audio.samplerate != st->codecpar->sample_rate || !st->codecpar->frame_size)
4363		✗	trust_default_duration = 0;
4364			}
4365			}
4366
4367	4/4 ✓ Branch 0 taken 29684 times. ✓ Branch 1 taken 281 times. ✓ Branch 2 taken 4549 times. ✓ Branch 3 taken 25135 times.	29965	if (!block_duration && trust_default_duration)
4368		4549	block_duration = track->default_duration * laces / matroska->time_scale;
4369
4370	5/6 ✓ Branch 0 taken 29965 times. ✗ Branch 1 not taken. ✓ Branch 2 taken 76 times. ✓ Branch 3 taken 29889 times. ✓ Branch 4 taken 60 times. ✓ Branch 5 taken 16 times.	29965	if (cluster_time != (uint64_t)-1 && (block_time >= 0 || cluster_time >= -block_time))
4371		29949	track->end_timecode =
4372		29949	FFMAX(track->end_timecode, timecode + block_duration);
4373
4374	2/2 ✓ Branch 0 taken 30429 times. ✓ Branch 1 taken 29965 times.	60394	for (n = 0; n < laces; n++) {
4375		30429	int64_t lace_duration = block_duration*(n+1) / laces - block_duration*n / laces;
4376		30429	uint8_t *out_data = data;
4377		30429	int out_size = lace_size[n];
4378
4379	2/2 ✓ Branch 0 taken 81 times. ✓ Branch 1 taken 30348 times.	30429	if (track->needs_decoding) {
4380		81	res = matroska_decode_buffer(&out_data, &out_size, track);
4381	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 81 times.	81	if (res < 0)
4382		✗	return res;
4383			/* Given that we are here means that out_data is no longer
4384			* owned by buf, so set it to NULL. This depends upon
4385			* zero-length header removal compression being ignored. */
4386			av_assert1(out_data != data);
4387		81	buf = NULL;
4388			}
4389
4390	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 30429 times.	30429	if (track->audio.buf) {
4391		✗	res = matroska_parse_rm_audio(matroska, track, st,
4392			out_data, out_size,
4393			timecode, pos);
4394		✗	if (!buf)
4395		✗	av_free(out_data);
4396		✗	if (res)
4397		✗	return res;
4398	2/2 ✓ Branch 0 taken 90 times. ✓ Branch 1 taken 30339 times.	30429	} else if (st->codecpar->codec_id == AV_CODEC_ID_WEBVTT) {
4399		90	res = matroska_parse_webvtt(matroska, track, st,
4400			out_data, out_size,
4401			timecode, lace_duration,
4402			pos);
4403	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 90 times.	90	if (!buf)
4404		✗	av_free(out_data);
4405	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 90 times.	90	if (res)
4406		✗	return res;
4407			} else {
4408		30339	res = matroska_parse_frame(matroska, track, st, buf, out_data,
4409			out_size, timecode, lace_duration,
4410			pos, is_keyframe,
4411			blockmore, nb_blockmore,
4412			discard_padding);
4413	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 30339 times.	30339	if (res)
4414		✗	return res;
4415			}
4416
4417	2/2 ✓ Branch 0 taken 30254 times. ✓ Branch 1 taken 175 times.	30429	if (timecode != AV_NOPTS_VALUE)
4418	2/2 ✓ Branch 0 taken 5119 times. ✓ Branch 1 taken 25135 times.	30254	timecode = lace_duration ? timecode + lace_duration : AV_NOPTS_VALUE;
4419		30429	data += lace_size[n];
4420			}
4421
4422		29965	return 0;
4423			}
4424
4425		31287	static int matroska_parse_cluster(MatroskaDemuxContext *matroska)
4426			{
4427		31287	MatroskaCluster *cluster = &matroska->current_cluster;
4428		31287	MatroskaBlock *block = &cluster->block;
4429			int res;
4430
4431	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 31287 times.	31287	av_assert0(matroska->num_levels <= 2U);
4432
4433	2/2 ✓ Branch 0 taken 1229 times. ✓ Branch 1 taken 30058 times.	31287	if (matroska->num_levels == 1) {
4434		1229	res = ebml_parse(matroska, matroska_segment, NULL);
4435
4436	2/2 ✓ Branch 0 taken 823 times. ✓ Branch 1 taken 406 times.	1229	if (res == 1) {
4437			/* Found a cluster: subtract the size of the ID already read. */
4438		823	cluster->pos = avio_tell(matroska->ctx->pb) - 4;
4439
4440		823	res = ebml_parse(matroska, matroska_cluster_enter, cluster);
4441	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 823 times.	823	if (res < 0)
4442		✗	return res;
4443			}
4444			}
4445
4446	2/2 ✓ Branch 0 taken 30840 times. ✓ Branch 1 taken 447 times.	31287	if (matroska->num_levels == 2) {
4447			/* We are inside a cluster. */
4448		30840	res = ebml_parse(matroska, matroska_cluster_parsing, cluster);
4449
4450	4/4 ✓ Branch 0 taken 30830 times. ✓ Branch 1 taken 10 times. ✓ Branch 2 taken 30825 times. ✓ Branch 3 taken 5 times.	30840	if (res >= 0 && block->bin.size > 0) {
4451	2/2 ✓ Branch 0 taken 487 times. ✓ Branch 1 taken 30338 times.	30825	int is_keyframe = block->non_simple ? block->reference.count == 0 : -1;
4452
4453		30825	res = matroska_parse_block(matroska, block->bin.buf, block->bin.data,
4454			block->bin.size, block->bin.pos,
4455			cluster->timecode, block->duration,
4456		30825	is_keyframe, block->blockmore.elem,
4457			block->blockmore.nb_elem, cluster->pos,
4458			block->discard_padding);
4459			}
4460
4461		30840	ebml_free(matroska_blockgroup, block);
4462		30840	memset(block, 0, sizeof(*block));
4463	2/2 ✓ Branch 0 taken 381 times. ✓ Branch 1 taken 66 times.	447	} else if (!matroska->num_levels) {
4464	2/2 ✓ Branch 1 taken 374 times. ✓ Branch 2 taken 7 times.	381	if (!avio_feof(matroska->ctx->pb)) {
4465		374	avio_r8(matroska->ctx->pb);
4466	1/2 ✗ Branch 1 not taken. ✓ Branch 2 taken 374 times.	374	if (!avio_feof(matroska->ctx->pb)) {
4467		✗	av_log(matroska->ctx, AV_LOG_WARNING, "File extends beyond "
4468			"end of segment.\n");
4469		✗	return AVERROR_INVALIDDATA;
4470			}
4471			}
4472		381	matroska->done = 1;
4473		381	return AVERROR_EOF;
4474			}
4475
4476		30906	return res;
4477			}
4478
4479		30108	static int matroska_read_packet(AVFormatContext *s, AVPacket *pkt)
4480			{
4481		30108	MatroskaDemuxContext *matroska = s->priv_data;
4482		30108	int ret = 0;
4483
4484	2/2 ✓ Branch 0 taken 10 times. ✓ Branch 1 taken 30098 times.	30108	if (matroska->resync_pos == -1) {
4485			// This can only happen if generic seeking has been used.
4486		10	matroska->resync_pos = avio_tell(s->pb);
4487			}
4488
4489	2/2 ✓ Branch 1 taken 30940 times. ✓ Branch 2 taken 29682 times.	60622	while (matroska_deliver_packet(matroska, pkt)) {
4490	2/2 ✓ Branch 0 taken 426 times. ✓ Branch 1 taken 30514 times.	30940	if (matroska->done)
4491	2/2 ✓ Branch 0 taken 10 times. ✓ Branch 1 taken 416 times.	426	return (ret < 0) ? ret : AVERROR_EOF;
4492	4/4 ✓ Branch 1 taken 368 times. ✓ Branch 2 taken 30146 times. ✓ Branch 3 taken 13 times. ✓ Branch 4 taken 355 times.	30514	if (matroska_parse_cluster(matroska) < 0 && !matroska->done)
4493		13	ret = matroska_resync(matroska, matroska->resync_pos);
4494			}
4495
4496		29682	return 0;
4497			}
4498
4499		55	static int matroska_read_seek(AVFormatContext *s, int stream_index,
4500			int64_t timestamp, int flags)
4501			{
4502		55	MatroskaDemuxContext *matroska = s->priv_data;
4503		55	MatroskaTrack *tracks = NULL;
4504		55	AVStream *st = s->streams[stream_index];
4505		55	FFStream *const sti = ffstream(st);
4506			int i, index;
4507
4508			/* Parse the CUES now since we need the index data to seek. */
4509	2/2 ✓ Branch 0 taken 3 times. ✓ Branch 1 taken 52 times.	55	if (matroska->cues_parsing_deferred > 0) {
4510		3	matroska->cues_parsing_deferred = 0;
4511		3	matroska_parse_cues(matroska);
4512			}
4513
4514	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 55 times.	55	if (!sti->nb_index_entries)
4515		✗	goto err;
4516		55	timestamp = FFMAX(timestamp, sti->index_entries[0].timestamp);
4517
4518	2/2 ✓ Branch 1 taken 45 times. ✓ Branch 2 taken 10 times.	55	if ((index = av_index_search_timestamp(st, timestamp, flags)) < 0 ||
4519	2/2 ✓ Branch 0 taken 17 times. ✓ Branch 1 taken 28 times.	45	index == sti->nb_index_entries - 1) {
4520		27	matroska_reset_status(matroska, 0, sti->index_entries[sti->nb_index_entries - 1].pos);
4521	2/2 ✓ Branch 1 taken 285 times. ✓ Branch 2 taken 410 times.	695	while ((index = av_index_search_timestamp(st, timestamp, flags)) < 0 ||
4522	2/2 ✓ Branch 0 taken 409 times. ✓ Branch 1 taken 1 times.	410	index == sti->nb_index_entries - 1) {
4523		694	matroska_clear_queue(matroska);
4524	2/2 ✓ Branch 1 taken 26 times. ✓ Branch 2 taken 668 times.	694	if (matroska_parse_cluster(matroska) < 0)
4525		26	break;
4526			}
4527			}
4528
4529		55	matroska_clear_queue(matroska);
4530	4/4 ✓ Branch 0 taken 45 times. ✓ Branch 1 taken 10 times. ✓ Branch 2 taken 3 times. ✓ Branch 3 taken 42 times.	55	if (index < 0 || (matroska->cues_parsing_deferred < 0 &&
4531	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 3 times.	3	index == sti->nb_index_entries - 1))
4532		10	goto err;
4533
4534		45	tracks = matroska->tracks.elem;
4535	2/2 ✓ Branch 0 taken 69 times. ✓ Branch 1 taken 45 times.	114	for (i = 0; i < matroska->tracks.nb_elem; i++) {
4536		69	tracks[i].audio.pkt_cnt = 0;
4537		69	tracks[i].audio.sub_packet_cnt = 0;
4538		69	tracks[i].audio.buf_timecode = AV_NOPTS_VALUE;
4539		69	tracks[i].end_timecode = 0;
4540			}
4541
4542			/* We seek to a level 1 element, so set the appropriate status. */
4543		45	matroska_reset_status(matroska, 0, sti->index_entries[index].pos);
4544	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 45 times.	45	if (flags & AVSEEK_FLAG_ANY) {
4545		✗	sti->skip_to_keyframe = 0;
4546		✗	matroska->skip_to_timecode = timestamp;
4547			} else {
4548		45	sti->skip_to_keyframe = 1;
4549		45	matroska->skip_to_timecode = sti->index_entries[index].timestamp;
4550			}
4551		45	matroska->skip_to_keyframe = 1;
4552		45	matroska->done = 0;
4553		45	avpriv_update_cur_dts(s, st, sti->index_entries[index].timestamp);
4554		45	return 0;
4555		10	err:
4556			// slightly hackish but allows proper fallback to
4557			// the generic seeking code.
4558		10	matroska_reset_status(matroska, 0, -1);
4559		10	matroska->resync_pos = -1;
4560		10	matroska_clear_queue(matroska);
4561		10	sti->skip_to_keyframe =
4562		10	matroska->skip_to_keyframe = 0;
4563		10	matroska->done = 0;
4564		10	return -1;
4565			}
4566
4567		394	static int matroska_read_close(AVFormatContext *s)
4568			{
4569		394	MatroskaDemuxContext *matroska = s->priv_data;
4570		394	MatroskaTrack *tracks = matroska->tracks.elem;
4571			int n;
4572
4573		394	matroska_clear_queue(matroska);
4574
4575	2/2 ✓ Branch 0 taken 469 times. ✓ Branch 1 taken 394 times.	863	for (n = 0; n < matroska->tracks.nb_elem; n++)
4576	2/2 ✓ Branch 0 taken 85 times. ✓ Branch 1 taken 384 times.	469	if (tracks[n].type == MATROSKA_TRACK_TYPE_AUDIO)
4577		85	av_freep(&tracks[n].audio.buf);
4578		394	ebml_free(matroska_segment, matroska);
4579
4580		394	return 0;
4581			}
4582
4583			#if CONFIG_WEBM_DASH_MANIFEST_DEMUXER
4584			typedef struct {
4585			int64_t start_time_ns;
4586			int64_t end_time_ns;
4587			int64_t start_offset;
4588			int64_t end_offset;
4589			} CueDesc;
4590
4591			/* This function searches all the Cues and returns the CueDesc corresponding to
4592			* the timestamp ts. Returned CueDesc will be such that start_time_ns <= ts <
4593			* end_time_ns. All 4 fields will be set to -1 if ts >= file's duration or
4594			* if an error occurred.
4595			*/
4596		4051	static CueDesc get_cue_desc(AVFormatContext *s, int64_t ts, int64_t cues_start) {
4597		4051	MatroskaDemuxContext *matroska = s->priv_data;
4598		4051	FFStream *const sti = ffstream(s->streams[0]);
4599		4051	AVIndexEntry *const index_entries = sti->index_entries;
4600		4051	int nb_index_entries = sti->nb_index_entries;
4601			CueDesc cue_desc;
4602			int i;
4603
4604	2/2 ✓ Branch 0 taken 101 times. ✓ Branch 1 taken 3950 times.	4051	if (ts >= (int64_t)(matroska->duration * matroska->time_scale))
4605		101	return (CueDesc) {-1, -1, -1, -1};
4606	2/2 ✓ Branch 0 taken 45235 times. ✓ Branch 1 taken 156 times.	45391	for (i = 1; i < nb_index_entries; i++) {
4607	1/2 ✓ Branch 0 taken 45235 times. ✗ Branch 1 not taken.	45235	if (index_entries[i - 1].timestamp * matroska->time_scale <= ts &&
4608	2/2 ✓ Branch 0 taken 3794 times. ✓ Branch 1 taken 41441 times.	45235	index_entries[i].timestamp * matroska->time_scale > ts) {
4609		3794	break;
4610			}
4611			}
4612		3950	--i;
4613	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 3950 times.	3950	if (index_entries[i].timestamp > matroska->duration)
4614		✗	return (CueDesc) {-1, -1, -1, -1};
4615		3950	cue_desc.start_time_ns = index_entries[i].timestamp * matroska->time_scale;
4616		3950	cue_desc.start_offset = index_entries[i].pos - matroska->segment_start;
4617	2/2 ✓ Branch 0 taken 3794 times. ✓ Branch 1 taken 156 times.	3950	if (i != nb_index_entries - 1) {
4618		3794	cue_desc.end_time_ns = index_entries[i + 1].timestamp * matroska->time_scale;
4619		3794	cue_desc.end_offset = index_entries[i + 1].pos - matroska->segment_start;
4620			} else {
4621		156	cue_desc.end_time_ns = matroska->duration * matroska->time_scale;
4622			// FIXME: this needs special handling for files where Cues appear
4623			// before Clusters. the current logic assumes Cues appear after
4624			// Clusters.
4625		156	cue_desc.end_offset = cues_start - matroska->segment_start;
4626			}
4627
4628	1/2 ✓ Branch 0 taken 3950 times. ✗ Branch 1 not taken.	3950	if (cue_desc.end_time_ns < cue_desc.start_time_ns ||
4629	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)
4630		✗	return (CueDesc) {-1, -1, -1, -1};
4631
4632		3950	return cue_desc;
4633			}
4634
4635		10	static int webm_clusters_start_with_keyframe(AVFormatContext *s)
4636			{
4637		10	MatroskaDemuxContext *matroska = s->priv_data;
4638		10	AVStream *const st = s->streams[0];
4639		10	FFStream *const sti = ffstream(st);
4640		10	uint32_t id = matroska->current_id;
4641			int64_t cluster_pos, before_pos;
4642		10	int index, rv = 1;
4643
4644	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 10 times.	10	if (sti->nb_index_entries <= 0)
4645		✗	return 0;
4646
4647			// seek to the first cluster using cues.
4648		10	index = av_index_search_timestamp(st, 0, 0);
4649	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 10 times.	10	if (index < 0)
4650		✗	return 0;
4651		10	cluster_pos = sti->index_entries[index].pos;
4652		10	before_pos = avio_tell(s->pb);
4653		78	while (1) {
4654			uint64_t cluster_id, cluster_length;
4655			int read;
4656			AVPacket *pkt;
4657		88	avio_seek(s->pb, cluster_pos, SEEK_SET);
4658			// read cluster id and length
4659		88	read = ebml_read_num(matroska, matroska->ctx->pb, 4, &cluster_id, 1);
4660	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
4661			break;
4662		79	read = ebml_read_length(matroska, matroska->ctx->pb, &cluster_length);
4663	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 79 times.	79	if (read < 0)
4664		✗	break;
4665
4666		79	matroska_reset_status(matroska, 0, cluster_pos);
4667		79	matroska_clear_queue(matroska);
4668	1/2 ✓ Branch 1 taken 79 times. ✗ Branch 2 not taken.	79	if (matroska_parse_cluster(matroska) < 0 ||
4669	1/2 ✓ Branch 0 taken 79 times. ✗ Branch 1 not taken.	79	!matroska->queue.head) {
4670			break;
4671			}
4672		79	pkt = &matroska->queue.head->pkt;
4673			// 4 + read is the length of the cluster id and the cluster length field.
4674		79	cluster_pos += 4 + read + cluster_length;
4675	2/2 ✓ Branch 0 taken 1 times. ✓ Branch 1 taken 78 times.	79	if (!(pkt->flags & AV_PKT_FLAG_KEY)) {
4676		1	rv = 0;
4677		1	break;
4678			}
4679			}
4680
4681			/* Restore the status after matroska_read_header: */
4682		10	matroska_reset_status(matroska, id, before_pos);
4683
4684		10	return rv;
4685			}
4686
4687		555	static int buffer_size_after_time_downloaded(int64_t time_ns, double search_sec, int64_t bps,
4688			double min_buffer, double* buffer,
4689			double* sec_to_download, AVFormatContext *s,
4690			int64_t cues_start)
4691			{
4692		555	double nano_seconds_per_second = 1000000000.0;
4693		555	double time_sec = time_ns / nano_seconds_per_second;
4694		555	int rv = 0;
4695		555	int64_t time_to_search_ns = (int64_t)(search_sec * nano_seconds_per_second);
4696		555	int64_t end_time_ns = time_ns + time_to_search_ns;
4697		555	double sec_downloaded = 0.0;
4698		555	CueDesc desc_curr = get_cue_desc(s, time_ns, cues_start);
4699	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 555 times.	555	if (desc_curr.start_time_ns == -1)
4700		✗	return -1;
4701		555	*sec_to_download = 0.0;
4702
4703			// Check for non cue start time.
4704	2/2 ✓ Branch 0 taken 513 times. ✓ Branch 1 taken 42 times.	555	if (time_ns > desc_curr.start_time_ns) {
4705		513	int64_t cue_nano = desc_curr.end_time_ns - time_ns;
4706		513	double percent = (double)(cue_nano) / (desc_curr.end_time_ns - desc_curr.start_time_ns);
4707		513	double cueBytes = (desc_curr.end_offset - desc_curr.start_offset) * percent;
4708		513	double timeToDownload = (cueBytes * 8.0) / bps;
4709
4710		513	sec_downloaded += (cue_nano / nano_seconds_per_second) - timeToDownload;
4711		513	*sec_to_download += timeToDownload;
4712
4713			// Check if the search ends within the first cue.
4714	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 513 times.	513	if (desc_curr.end_time_ns >= end_time_ns) {
4715		✗	double desc_end_time_sec = desc_curr.end_time_ns / nano_seconds_per_second;
4716		✗	double percent_to_sub = search_sec / (desc_end_time_sec - time_sec);
4717		✗	sec_downloaded = percent_to_sub * sec_downloaded;
4718		✗	*sec_to_download = percent_to_sub * *sec_to_download;
4719			}
4720
4721	2/2 ✓ Branch 0 taken 4 times. ✓ Branch 1 taken 509 times.	513	if ((sec_downloaded + *buffer) <= min_buffer) {
4722		4	return 1;
4723			}
4724
4725			// Get the next Cue.
4726		509	desc_curr = get_cue_desc(s, desc_curr.end_time_ns, cues_start);
4727			}
4728
4729	2/2 ✓ Branch 0 taken 2856 times. ✓ Branch 1 taken 100 times.	2956	while (desc_curr.start_time_ns != -1) {
4730		2856	int64_t desc_bytes = desc_curr.end_offset - desc_curr.start_offset;
4731		2856	int64_t desc_ns = desc_curr.end_time_ns - desc_curr.start_time_ns;
4732		2856	double desc_sec = desc_ns / nano_seconds_per_second;
4733		2856	double bits = (desc_bytes * 8.0);
4734		2856	double time_to_download = bits / bps;
4735
4736		2856	sec_downloaded += desc_sec - time_to_download;
4737		2856	*sec_to_download += time_to_download;
4738
4739	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 2856 times.	2856	if (desc_curr.end_time_ns >= end_time_ns) {
4740		✗	double desc_end_time_sec = desc_curr.end_time_ns / nano_seconds_per_second;
4741		✗	double percent_to_sub = search_sec / (desc_end_time_sec - time_sec);
4742		✗	sec_downloaded = percent_to_sub * sec_downloaded;
4743		✗	*sec_to_download = percent_to_sub * *sec_to_download;
4744
4745		✗	if ((sec_downloaded + *buffer) <= min_buffer)
4746		✗	rv = 1;
4747		✗	break;
4748			}
4749
4750	2/2 ✓ Branch 0 taken 451 times. ✓ Branch 1 taken 2405 times.	2856	if ((sec_downloaded + *buffer) <= min_buffer) {
4751		451	rv = 1;
4752		451	break;
4753			}
4754
4755		2405	desc_curr = get_cue_desc(s, desc_curr.end_time_ns, cues_start);
4756			}
4757		551	*buffer = *buffer + sec_downloaded;
4758		551	return rv;
4759			}
4760
4761			/* This function computes the bandwidth of the WebM file with the help of
4762			* buffer_size_after_time_downloaded() function. Both of these functions are
4763			* adapted from WebM Tools project and are adapted to work with FFmpeg's
4764			* Matroska parsing mechanism.
4765			*
4766			* Returns the bandwidth of the file on success; -1 on error.
4767			* */
4768		10	static int64_t webm_dash_manifest_compute_bandwidth(AVFormatContext *s, int64_t cues_start)
4769			{
4770		10	MatroskaDemuxContext *matroska = s->priv_data;
4771		10	AVStream *st = s->streams[0];
4772		10	FFStream *const sti = ffstream(st);
4773		10	double bandwidth = 0.0;
4774
4775	2/2 ✓ Branch 0 taken 101 times. ✓ Branch 1 taken 10 times.	111	for (int i = 0; i < sti->nb_index_entries; i++) {
4776		101	int64_t prebuffer_ns = 1000000000;
4777		101	int64_t time_ns = sti->index_entries[i].timestamp * matroska->time_scale;
4778		101	double nano_seconds_per_second = 1000000000.0;
4779			int64_t prebuffered_ns;
4780		101	double prebuffer_bytes = 0.0;
4781		101	int64_t temp_prebuffer_ns = prebuffer_ns;
4782			int64_t pre_bytes, pre_ns;
4783			double pre_sec, prebuffer, bits_per_second;
4784		101	CueDesc desc_beg = get_cue_desc(s, time_ns, cues_start);
4785			// Start with the first Cue.
4786		101	CueDesc desc_end = desc_beg;
4787
4788	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 101 times.	101	if (time_ns > INT64_MAX - prebuffer_ns)
4789		✗	return -1;
4790		101	prebuffered_ns = time_ns + prebuffer_ns;
4791
4792			// Figure out how much data we have downloaded for the prebuffer. This will
4793			// be used later to adjust the bits per sample to try.
4794	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) {
4795			// Prebuffered the entire Cue.
4796		21	prebuffer_bytes += desc_end.end_offset - desc_end.start_offset;
4797		21	temp_prebuffer_ns -= desc_end.end_time_ns - desc_end.start_time_ns;
4798		21	desc_end = get_cue_desc(s, desc_end.end_time_ns, cues_start);
4799			}
4800	2/2 ✓ Branch 0 taken 1 times. ✓ Branch 1 taken 100 times.	101	if (desc_end.start_time_ns == -1) {
4801			// The prebuffer is larger than the duration.
4802	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 1 times.	1	if (matroska->duration * matroska->time_scale >= prebuffered_ns)
4803		✗	return -1;
4804		1	bits_per_second = 0.0;
4805			} else {
4806			// The prebuffer ends in the last Cue. Estimate how much data was
4807			// prebuffered.
4808		100	pre_bytes = desc_end.end_offset - desc_end.start_offset;
4809	1/2 ✓ Branch 0 taken 100 times. ✗ Branch 1 not taken.	100	if (desc_end.end_time_ns <= desc_end.start_time_ns ||
4810	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)
4811		✗	return -1;
4812		100	pre_ns = desc_end.end_time_ns - desc_end.start_time_ns;
4813		100	pre_sec = pre_ns / nano_seconds_per_second;
4814		100	prebuffer_bytes +=
4815		100	pre_bytes * ((temp_prebuffer_ns / nano_seconds_per_second) / pre_sec);
4816
4817		100	prebuffer = prebuffer_ns / nano_seconds_per_second;
4818
4819			// Set this to 0.0 in case our prebuffer buffers the entire video.
4820		100	bits_per_second = 0.0;
4821			do {
4822		560	int64_t desc_bytes = desc_end.end_offset - desc_beg.start_offset;
4823			double desc_sec, calc_bits_per_second, percent, mod_bits_per_second;
4824	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)
4825		✗	return -1;
4826	1/2 ✓ Branch 0 taken 560 times. ✗ Branch 1 not taken.	560	if (desc_end.end_time_ns <= desc_beg.start_time_ns ||
4827	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)
4828		✗	return -1;
4829
4830		560	int64_t desc_ns = desc_end.end_time_ns - desc_beg.start_time_ns;
4831		560	desc_sec = desc_ns / nano_seconds_per_second;
4832		560	calc_bits_per_second = (desc_bytes * 8) / desc_sec;
4833
4834			// Drop the bps by the percentage of bytes buffered.
4835		560	percent = (desc_bytes - prebuffer_bytes) / desc_bytes;
4836		560	mod_bits_per_second = calc_bits_per_second * percent;
4837
4838	2/2 ✓ Branch 0 taken 555 times. ✓ Branch 1 taken 5 times.	560	if (prebuffer < desc_sec) {
4839		555	double search_sec =
4840		555	(double)(matroska->duration * matroska->time_scale) / nano_seconds_per_second;
4841
4842			// Add 1 so the bits per second should be a little bit greater than file
4843			// datarate.
4844		555	int64_t bps = (int64_t)(mod_bits_per_second) + 1;
4845		555	const double min_buffer = 0.0;
4846		555	double buffer = prebuffer;
4847		555	double sec_to_download = 0.0;
4848
4849		555	int rv = buffer_size_after_time_downloaded(prebuffered_ns, search_sec, bps,
4850			min_buffer, &buffer, &sec_to_download,
4851			s, cues_start);
4852	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 555 times.	555	if (rv < 0) {
4853		✗	return -1;
4854	2/2 ✓ Branch 0 taken 100 times. ✓ Branch 1 taken 455 times.	555	} else if (rv == 0) {
4855		100	bits_per_second = (double)(bps);
4856		100	break;
4857			}
4858			}
4859
4860		460	desc_end = get_cue_desc(s, desc_end.end_time_ns, cues_start);
4861	1/2 ✓ Branch 0 taken 460 times. ✗ Branch 1 not taken.	460	} while (desc_end.start_time_ns != -1);
4862			}
4863	2/2 ✓ Branch 0 taken 38 times. ✓ Branch 1 taken 63 times.	101	if (bandwidth < bits_per_second) bandwidth = bits_per_second;
4864			}
4865		10	return (int64_t)bandwidth;
4866			}
4867
4868		10	static int webm_dash_manifest_cues(AVFormatContext *s, int64_t init_range)
4869			{
4870		10	MatroskaDemuxContext *matroska = s->priv_data;
4871		10	EbmlList *seekhead_list = &matroska->seekhead;
4872		10	MatroskaSeekhead *seekhead = seekhead_list->elem;
4873		10	AVStream *const st = s->streams[0];
4874		10	FFStream *const sti = ffstream(st);
4875			AVBPrint bprint;
4876			char *buf;
4877		10	int64_t cues_start = -1, cues_end = -1, before_pos, bandwidth;
4878			int i;
4879			int ret;
4880
4881			// determine cues start and end positions
4882	1/2 ✓ Branch 0 taken 34 times. ✗ Branch 1 not taken.	34	for (i = 0; i < seekhead_list->nb_elem; i++)
4883	2/2 ✓ Branch 0 taken 10 times. ✓ Branch 1 taken 24 times.	34	if (seekhead[i].id == MATROSKA_ID_CUES)
4884		10	break;
4885
4886	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 10 times.	10	if (i >= seekhead_list->nb_elem) return -1;
4887
4888		10	before_pos = avio_tell(matroska->ctx->pb);
4889		10	cues_start = seekhead[i].pos + matroska->segment_start;
4890	1/2 ✓ Branch 1 taken 10 times. ✗ Branch 2 not taken.	10	if (avio_seek(matroska->ctx->pb, cues_start, SEEK_SET) == cues_start) {
4891			// cues_end is computed as cues_start + cues_length + length of the
4892			// Cues element ID (i.e. 4) + EBML length of the Cues element.
4893			// cues_end is inclusive and the above sum is reduced by 1.
4894			uint64_t cues_length, cues_id;
4895			int bytes_read;
4896		10	bytes_read = ebml_read_num (matroska, matroska->ctx->pb, 4, &cues_id, 1);
4897	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))
4898		✗	return bytes_read < 0 ? bytes_read : AVERROR_INVALIDDATA;
4899		10	bytes_read = ebml_read_length(matroska, matroska->ctx->pb, &cues_length);
4900	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 10 times.	10	if (bytes_read < 0)
4901		✗	return bytes_read;
4902		10	cues_end = cues_start + 4 + bytes_read + cues_length - 1;
4903			}
4904		10	avio_seek(matroska->ctx->pb, before_pos, SEEK_SET);
4905	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;
4906
4907			// parse the cues
4908		10	matroska_parse_cues(matroska);
4909
4910	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 10 times.	10	if (!sti->nb_index_entries)
4911		✗	return AVERROR_INVALIDDATA;
4912
4913			// cues start
4914		10	av_dict_set_int(&s->streams[0]->metadata, CUES_START, cues_start, 0);
4915
4916			// cues end
4917		10	av_dict_set_int(&s->streams[0]->metadata, CUES_END, cues_end, 0);
4918
4919			// if the file has cues at the start, fix up the init range so that
4920			// it does not include it
4921	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 10 times.	10	if (cues_start <= init_range)
4922		✗	av_dict_set_int(&s->streams[0]->metadata, INITIALIZATION_RANGE, cues_start - 1, 0);
4923
4924			// bandwidth
4925		10	bandwidth = webm_dash_manifest_compute_bandwidth(s, cues_start);
4926	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 10 times.	10	if (bandwidth < 0) return -1;
4927		10	av_dict_set_int(&s->streams[0]->metadata, BANDWIDTH, bandwidth, 0);
4928
4929			// check if all clusters start with key frames
4930		10	av_dict_set_int(&s->streams[0]->metadata, CLUSTER_KEYFRAME, webm_clusters_start_with_keyframe(s), 0);
4931
4932			// Store cue point timestamps as a comma separated list
4933			// for checking subsegment alignment in the muxer.
4934		10	av_bprint_init(&bprint, 0, AV_BPRINT_SIZE_UNLIMITED);
4935	2/2 ✓ Branch 0 taken 101 times. ✓ Branch 1 taken 10 times.	111	for (int j = 0; j < sti->nb_index_entries; j++)
4936		101	av_bprintf(&bprint, "%" PRId64",", sti->index_entries[j].timestamp);
4937	1/2 ✗ Branch 1 not taken. ✓ Branch 2 taken 10 times.	10	if (!av_bprint_is_complete(&bprint)) {
4938		✗	av_bprint_finalize(&bprint, NULL);
4939		✗	return AVERROR(ENOMEM);
4940			}
4941			// Remove the trailing ','
4942		10	bprint.str[--bprint.len] = '\0';
4943	1/2 ✗ Branch 1 not taken. ✓ Branch 2 taken 10 times.	10	if ((ret = av_bprint_finalize(&bprint, &buf)) < 0)
4944		✗	return ret;
4945		10	av_dict_set(&s->streams[0]->metadata, CUE_TIMESTAMPS,
4946			buf, AV_DICT_DONT_STRDUP_VAL);
4947
4948		10	return 0;
4949			}
4950
4951		14	static int webm_dash_manifest_read_header(AVFormatContext *s)
4952			{
4953			char *buf;
4954		14	int ret = matroska_read_header(s);
4955			int64_t init_range;
4956			MatroskaTrack *tracks;
4957		14	MatroskaDemuxContext *matroska = s->priv_data;
4958	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 14 times.	14	if (ret) {
4959		✗	av_log(s, AV_LOG_ERROR, "Failed to read file headers\n");
4960		✗	return -1;
4961			}
4962	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) {
4963		✗	av_log(s, AV_LOG_ERROR, "No track found\n");
4964		✗	return AVERROR_INVALIDDATA;
4965			}
4966
4967	2/2 ✓ Branch 0 taken 10 times. ✓ Branch 1 taken 4 times.	14	if (!matroska->is_live) {
4968		10	buf = av_asprintf("%g", matroska->duration);
4969	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 10 times.	10	if (!buf)
4970		✗	return AVERROR(ENOMEM);
4971		10	av_dict_set(&s->streams[0]->metadata, DURATION,
4972			buf, AV_DICT_DONT_STRDUP_VAL);
4973
4974			// initialization range
4975			// 5 is the offset of Cluster ID.
4976		10	init_range = avio_tell(s->pb) - 5;
4977		10	av_dict_set_int(&s->streams[0]->metadata, INITIALIZATION_RANGE, init_range, 0);
4978			}
4979
4980			// basename of the file
4981		14	buf = strrchr(s->url, '/');
4982	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);
4983
4984			// track number
4985		14	tracks = matroska->tracks.elem;
4986		14	av_dict_set_int(&s->streams[0]->metadata, TRACK_NUMBER, tracks[0].num, 0);
4987
4988			// parse the cues and populate Cue related fields
4989	2/2 ✓ Branch 0 taken 10 times. ✓ Branch 1 taken 4 times.	14	if (!matroska->is_live) {
4990		10	ret = webm_dash_manifest_cues(s, init_range);
4991	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 10 times.	10	if (ret < 0) {
4992		✗	av_log(s, AV_LOG_ERROR, "Error parsing Cues\n");
4993		✗	return ret;
4994			}
4995			}
4996
4997			// use the bandwidth from the command line if it was provided
4998	2/2 ✓ Branch 0 taken 2 times. ✓ Branch 1 taken 12 times.	14	if (matroska->bandwidth > 0) {
4999		2	av_dict_set_int(&s->streams[0]->metadata, BANDWIDTH,
5000		2	matroska->bandwidth, 0);
5001			}
5002		14	return 0;
5003			}
5004
5005		28	static int webm_dash_manifest_read_packet(AVFormatContext *s, AVPacket *pkt)
5006			{
5007		28	return AVERROR_EOF;
5008			}
5009
5010			#define OFFSET(x) offsetof(MatroskaDemuxContext, x)
5011			static const AVOption options[] = {
5012			{ "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 },
5013			{ "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 },
5014			{ NULL },
5015			};
5016
5017			static const AVClass webm_dash_class = {
5018			.class_name = "WebM DASH Manifest demuxer",
5019			.item_name = av_default_item_name,
5020			.option = options,
5021			.version = LIBAVUTIL_VERSION_INT,
5022			};
5023
5024			const FFInputFormat ff_webm_dash_manifest_demuxer = {
5025			.p.name = "webm_dash_manifest",
5026			.p.long_name = NULL_IF_CONFIG_SMALL("WebM DASH Manifest"),
5027			.p.priv_class = &webm_dash_class,
5028			.priv_data_size = sizeof(MatroskaDemuxContext),
5029			.flags_internal = FF_INFMT_FLAG_INIT_CLEANUP,
5030			.read_header = webm_dash_manifest_read_header,
5031			.read_packet = webm_dash_manifest_read_packet,
5032			.read_close = matroska_read_close,
5033			};
5034			#endif
5035
5036			const FFInputFormat ff_matroska_demuxer = {
5037			.p.name = "matroska,webm",
5038			.p.long_name = NULL_IF_CONFIG_SMALL("Matroska / WebM"),
5039			.p.extensions = "mkv,mk3d,mka,mks,webm",
5040			.p.mime_type = "audio/webm,audio/x-matroska,video/webm,video/x-matroska",
5041			.priv_data_size = sizeof(MatroskaDemuxContext),
5042			.flags_internal = FF_INFMT_FLAG_INIT_CLEANUP,
5043			.read_probe = matroska_probe,
5044			.read_header = matroska_read_header,
5045			.read_packet = matroska_read_packet,
5046			.read_close = matroska_read_close,
5047			.read_seek = matroska_read_seek,
5048			};
5049