FFmpeg coverage


Directory: ../../../ffmpeg/
File: src/libavformat/matroskadec.c
Date: 2025-06-01 09:29:47
Exec Total Coverage
Lines: 1732 2336 74.1%
Functions: 65 68 95.6%
Branches: 1023 1641 62.3%

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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/avstring.h"
38 #include "libavutil/base64.h"
39 #include "libavutil/bprint.h"
40 #include "libavutil/dict.h"
41 #include "libavutil/display.h"
42 #include "libavutil/hdr_dynamic_metadata.h"
43 #include "libavutil/intfloat.h"
44 #include "libavutil/intreadwrite.h"
45 #include "libavutil/lzo.h"
46 #include "libavutil/mastering_display_metadata.h"
47 #include "libavutil/mathematics.h"
48 #include "libavutil/mem.h"
49 #include "libavutil/opt.h"
50 #include "libavutil/pixdesc.h"
51 #include "libavutil/time_internal.h"
52 #include "libavutil/spherical.h"
53
54 #include "libavcodec/bytestream.h"
55 #include "libavcodec/defs.h"
56 #include "libavcodec/flac.h"
57 #include "libavcodec/itut35.h"
58 #include "libavcodec/mpeg4audio.h"
59 #include "libavcodec/packet_internal.h"
60
61 #include "avformat.h"
62 #include "avio_internal.h"
63 #include "demux.h"
64 #include "dovi_isom.h"
65 #include "internal.h"
66 #include "isom.h"
67 #include "matroska.h"
68 #include "oggdec.h"
69 /* For ff_codec_get_id(). */
70 #include "riff.h"
71 #include "rmsipr.h"
72
73 #if CONFIG_BZLIB
74 #include <bzlib.h>
75 #endif
76 #if CONFIG_ZLIB
77 #include <zlib.h>
78 #endif
79
80 #include "qtpalette.h"
81
82 #define EBML_UNKNOWN_LENGTH UINT64_MAX /* EBML unknown length, in uint64_t */
83 #define NEEDS_CHECKING 2 /* Indicates that some error checks
84 * still need to be performed */
85 #define LEVEL_ENDED 3 /* return value of ebml_parse when the
86 * syntax level used for parsing ended. */
87 #define SKIP_THRESHOLD 1024 * 1024 /* In non-seekable mode, if more than SKIP_THRESHOLD
88 * of unkown, potentially damaged data is encountered,
89 * it is considered an error. */
90 #define UNKNOWN_EQUIV 50 * 1024 /* An unknown element is considered equivalent
91 * to this many bytes of unknown data for the
92 * SKIP_THRESHOLD check. */
93
94 typedef enum {
95 EBML_NONE,
96 EBML_UINT,
97 EBML_SINT,
98 EBML_FLOAT,
99 EBML_STR,
100 EBML_UTF8,
101 EBML_BIN,
102 EBML_NEST,
103 EBML_LEVEL1,
104 EBML_STOP,
105 EBML_TYPE_COUNT
106 } EbmlType;
107
108 typedef struct CountedElement {
109 union {
110 uint64_t u;
111 int64_t i;
112 double f;
113 char *s;
114 } el;
115 unsigned count;
116 } CountedElement;
117
118 typedef const struct EbmlSyntax {
119 uint32_t id;
120 uint8_t type;
121 uint8_t is_counted;
122 size_t list_elem_size;
123 size_t data_offset;
124 union {
125 int64_t i;
126 uint64_t u;
127 double f;
128 const char *s;
129 const struct EbmlSyntax *n;
130 } def;
131 } EbmlSyntax;
132
133 typedef struct EbmlList {
134 int nb_elem;
135 unsigned int alloc_elem_size;
136 void *elem;
137 } EbmlList;
138
139 typedef struct EbmlBin {
140 int size;
141 AVBufferRef *buf;
142 uint8_t *data;
143 int64_t pos;
144 } EbmlBin;
145
146 typedef struct Ebml {
147 uint64_t version;
148 uint64_t max_size;
149 uint64_t id_length;
150 char *doctype;
151 uint64_t doctype_version;
152 } Ebml;
153
154 typedef struct MatroskaTrackCompression {
155 uint64_t algo;
156 EbmlBin settings;
157 } MatroskaTrackCompression;
158
159 typedef struct MatroskaTrackEncryption {
160 uint64_t algo;
161 EbmlBin key_id;
162 } MatroskaTrackEncryption;
163
164 typedef struct MatroskaTrackEncoding {
165 uint64_t scope;
166 uint64_t type;
167 MatroskaTrackCompression compression;
168 MatroskaTrackEncryption encryption;
169 } MatroskaTrackEncoding;
170
171 typedef struct MatroskaMasteringMeta {
172 double r_x;
173 double r_y;
174 double g_x;
175 double g_y;
176 double b_x;
177 double b_y;
178 double white_x;
179 double white_y;
180 double max_luminance;
181 CountedElement min_luminance;
182 } MatroskaMasteringMeta;
183
184 typedef struct MatroskaTrackVideoColor {
185 uint64_t matrix_coefficients;
186 uint64_t bits_per_channel;
187 uint64_t chroma_sub_horz;
188 uint64_t chroma_sub_vert;
189 uint64_t cb_sub_horz;
190 uint64_t cb_sub_vert;
191 uint64_t chroma_siting_horz;
192 uint64_t chroma_siting_vert;
193 uint64_t range;
194 uint64_t transfer_characteristics;
195 uint64_t primaries;
196 uint64_t max_cll;
197 uint64_t max_fall;
198 MatroskaMasteringMeta mastering_meta;
199 } MatroskaTrackVideoColor;
200
201 typedef struct MatroskaTrackVideoProjection {
202 uint64_t type;
203 EbmlBin private;
204 double yaw;
205 double pitch;
206 double roll;
207 } MatroskaTrackVideoProjection;
208
209 typedef struct MatroskaTrackVideo {
210 double frame_rate;
211 uint64_t display_width;
212 uint64_t display_height;
213 uint64_t pixel_width;
214 uint64_t pixel_height;
215 uint64_t cropped_width;
216 uint64_t cropped_height;
217 EbmlBin color_space;
218 uint64_t pixel_cropt;
219 uint64_t pixel_cropl;
220 uint64_t pixel_cropb;
221 uint64_t pixel_cropr;
222 uint64_t display_unit;
223 uint64_t interlaced;
224 uint64_t field_order;
225 uint64_t stereo_mode;
226 uint64_t alpha_mode;
227 EbmlList color;
228 MatroskaTrackVideoProjection projection;
229 } MatroskaTrackVideo;
230
231 typedef struct MatroskaTrackAudio {
232 double samplerate;
233 double out_samplerate;
234 uint64_t bitdepth;
235 uint64_t channels;
236
237 /* real audio header (extracted from extradata) */
238 int coded_framesize;
239 int sub_packet_h;
240 int frame_size;
241 int sub_packet_size;
242 int sub_packet_cnt;
243 int pkt_cnt;
244 uint64_t buf_timecode;
245 uint8_t *buf;
246 } MatroskaTrackAudio;
247
248 typedef struct MatroskaTrackPlane {
249 uint64_t uid;
250 uint64_t type;
251 } MatroskaTrackPlane;
252
253 typedef struct MatroskaTrackOperation {
254 EbmlList combine_planes;
255 } MatroskaTrackOperation;
256
257 typedef struct MatroskaBlockAdditionMapping {
258 uint64_t value;
259 char *name;
260 uint64_t type;
261 EbmlBin extradata;
262 } MatroskaBlockAdditionMapping;
263
264 typedef struct MatroskaTrack {
265 uint64_t num;
266 uint64_t uid;
267 uint64_t type;
268 char *name;
269 char *codec_id;
270 EbmlBin codec_priv;
271 char *language;
272 double time_scale;
273 uint64_t default_duration;
274 uint64_t flag_default;
275 uint64_t flag_forced;
276 uint64_t flag_comment;
277 uint64_t flag_hearingimpaired;
278 uint64_t flag_visualimpaired;
279 uint64_t flag_textdescriptions;
280 CountedElement flag_original;
281 uint64_t seek_preroll;
282 MatroskaTrackVideo video;
283 MatroskaTrackAudio audio;
284 MatroskaTrackOperation operation;
285 EbmlList encodings;
286 uint64_t codec_delay;
287 uint64_t codec_delay_in_track_tb;
288
289 AVStream *stream;
290 int64_t end_timecode;
291 int ms_compat;
292 int needs_decoding;
293 uint64_t max_block_additional_id;
294 EbmlList block_addition_mappings;
295
296 uint32_t palette[AVPALETTE_COUNT];
297 int has_palette;
298 } MatroskaTrack;
299
300 typedef struct MatroskaAttachment {
301 uint64_t uid;
302 char *filename;
303 char *description;
304 char *mime;
305 EbmlBin bin;
306
307 AVStream *stream;
308 } MatroskaAttachment;
309
310 typedef struct MatroskaChapter {
311 uint64_t start;
312 uint64_t end;
313 uint64_t uid;
314 char *title;
315
316 AVChapter *chapter;
317 } MatroskaChapter;
318
319 typedef struct MatroskaIndexPos {
320 uint64_t track;
321 uint64_t pos;
322 } MatroskaIndexPos;
323
324 typedef struct MatroskaIndex {
325 uint64_t time;
326 EbmlList pos;
327 } MatroskaIndex;
328
329 typedef struct MatroskaTag {
330 char *name;
331 char *string;
332 char *lang;
333 uint64_t def;
334 EbmlList sub;
335 } MatroskaTag;
336
337 typedef struct MatroskaTagTarget {
338 char *type;
339 uint64_t typevalue;
340 uint64_t trackuid;
341 uint64_t chapteruid;
342 uint64_t attachuid;
343 } MatroskaTagTarget;
344
345 typedef struct MatroskaTags {
346 MatroskaTagTarget target;
347 EbmlList tag;
348 } MatroskaTags;
349
350 typedef struct MatroskaSeekhead {
351 uint64_t id;
352 uint64_t pos;
353 } MatroskaSeekhead;
354
355 typedef struct MatroskaLevel {
356 uint64_t start;
357 uint64_t length;
358 } MatroskaLevel;
359
360 typedef struct MatroskaBlockMore {
361 uint64_t additional_id;
362 EbmlBin additional;
363 } MatroskaBlockMore;
364
365 typedef struct MatroskaBlock {
366 uint64_t duration;
367 CountedElement reference;
368 uint64_t non_simple;
369 EbmlBin bin;
370 EbmlList blockmore;
371 int64_t discard_padding;
372 } MatroskaBlock;
373
374 typedef struct MatroskaCluster {
375 MatroskaBlock block;
376 uint64_t timecode;
377 int64_t pos;
378 } MatroskaCluster;
379
380 typedef struct MatroskaLevel1Element {
381 int64_t pos;
382 uint32_t id;
383 int parsed;
384 } MatroskaLevel1Element;
385
386 typedef struct MatroskaDemuxContext {
387 const AVClass *class;
388 AVFormatContext *ctx;
389
390 /* EBML stuff */
391 MatroskaLevel levels[EBML_MAX_DEPTH];
392 int num_levels;
393 uint32_t current_id;
394 int64_t resync_pos;
395 int unknown_count;
396
397 uint64_t time_scale;
398 double duration;
399 char *title;
400 char *muxingapp;
401 EbmlBin date_utc;
402 EbmlList tracks;
403 EbmlList attachments;
404 EbmlList chapters;
405 EbmlList index;
406 EbmlList tags;
407 EbmlList seekhead;
408
409 /* byte position of the segment inside the stream */
410 int64_t segment_start;
411
412 /* This packet coincides with FFFormatContext.parse_pkt
413 * and is not owned by us. */
414 AVPacket *pkt;
415
416 /* the packet queue */
417 PacketList queue;
418
419 int done;
420
421 /* What to skip before effectively reading a packet. */
422 int skip_to_keyframe;
423 uint64_t skip_to_timecode;
424
425 /* File has a CUES element, but we defer parsing until it is needed. */
426 int cues_parsing_deferred;
427
428 /* Level1 elements and whether they were read yet */
429 MatroskaLevel1Element level1_elems[64];
430 int num_level1_elems;
431
432 MatroskaCluster current_cluster;
433
434 int is_webm;
435
436 /* WebM DASH Manifest live flag */
437 int is_live;
438
439 /* Bandwidth value for WebM DASH Manifest */
440 int bandwidth;
441 } MatroskaDemuxContext;
442
443 #define CHILD_OF(parent) { .def = { .n = parent } }
444
445 // The following forward declarations need their size because
446 // a tentative definition with internal linkage must not be an
447 // incomplete type (6.7.2 in C90, 6.9.2 in C99).
448 // Removing the sizes breaks MSVC.
449 static EbmlSyntax ebml_syntax[3], matroska_segment[9], matroska_track_video_color[15], matroska_track_video[19],
450 matroska_track[33], matroska_track_encoding[6], matroska_track_encodings[2],
451 matroska_track_combine_planes[2], matroska_track_operation[2], matroska_block_addition_mapping[5], matroska_tracks[2],
452 matroska_attachments[2], matroska_chapter_entry[9], matroska_chapter[6], matroska_chapters[2],
453 matroska_index_entry[3], matroska_index[2], matroska_tag[3], matroska_tags[2], matroska_seekhead[2],
454 matroska_blockadditions[2], matroska_blockgroup[8], matroska_cluster_parsing[8];
455
456 static EbmlSyntax ebml_header[] = {
457 { EBML_ID_EBMLREADVERSION, EBML_UINT, 0, 0, offsetof(Ebml, version), { .u = EBML_VERSION } },
458 { EBML_ID_EBMLMAXSIZELENGTH, EBML_UINT, 0, 0, offsetof(Ebml, max_size), { .u = 8 } },
459 { EBML_ID_EBMLMAXIDLENGTH, EBML_UINT, 0, 0, offsetof(Ebml, id_length), { .u = 4 } },
460 { EBML_ID_DOCTYPE, EBML_STR, 0, 0, offsetof(Ebml, doctype), { .s = "(none)" } },
461 { EBML_ID_DOCTYPEREADVERSION, EBML_UINT, 0, 0, offsetof(Ebml, doctype_version), { .u = 1 } },
462 { EBML_ID_EBMLVERSION, EBML_NONE },
463 { EBML_ID_DOCTYPEVERSION, EBML_NONE },
464 CHILD_OF(ebml_syntax)
465 };
466
467 static EbmlSyntax ebml_syntax[] = {
468 { EBML_ID_HEADER, EBML_NEST, 0, 0, 0, { .n = ebml_header } },
469 { MATROSKA_ID_SEGMENT, EBML_STOP },
470 { 0 }
471 };
472
473 static EbmlSyntax matroska_info[] = {
474 { MATROSKA_ID_TIMECODESCALE, EBML_UINT, 0, 0, offsetof(MatroskaDemuxContext, time_scale), { .u = 1000000 } },
475 { MATROSKA_ID_DURATION, EBML_FLOAT, 0, 0, offsetof(MatroskaDemuxContext, duration) },
476 { MATROSKA_ID_TITLE, EBML_UTF8, 0, 0, offsetof(MatroskaDemuxContext, title) },
477 { MATROSKA_ID_WRITINGAPP, EBML_NONE },
478 { MATROSKA_ID_MUXINGAPP, EBML_UTF8, 0, 0, offsetof(MatroskaDemuxContext, muxingapp) },
479 { MATROSKA_ID_DATEUTC, EBML_BIN, 0, 0, offsetof(MatroskaDemuxContext, date_utc) },
480 { MATROSKA_ID_SEGMENTUID, EBML_NONE },
481 CHILD_OF(matroska_segment)
482 };
483
484 static EbmlSyntax matroska_mastering_meta[] = {
485 { MATROSKA_ID_VIDEOCOLOR_RX, EBML_FLOAT, 0, 0, offsetof(MatroskaMasteringMeta, r_x) },
486 { MATROSKA_ID_VIDEOCOLOR_RY, EBML_FLOAT, 0, 0, offsetof(MatroskaMasteringMeta, r_y) },
487 { MATROSKA_ID_VIDEOCOLOR_GX, EBML_FLOAT, 0, 0, offsetof(MatroskaMasteringMeta, g_x) },
488 { MATROSKA_ID_VIDEOCOLOR_GY, EBML_FLOAT, 0, 0, offsetof(MatroskaMasteringMeta, g_y) },
489 { MATROSKA_ID_VIDEOCOLOR_BX, EBML_FLOAT, 0, 0, offsetof(MatroskaMasteringMeta, b_x) },
490 { MATROSKA_ID_VIDEOCOLOR_BY, EBML_FLOAT, 0, 0, offsetof(MatroskaMasteringMeta, b_y) },
491 { MATROSKA_ID_VIDEOCOLOR_WHITEX, EBML_FLOAT, 0, 0, offsetof(MatroskaMasteringMeta, white_x) },
492 { MATROSKA_ID_VIDEOCOLOR_WHITEY, EBML_FLOAT, 0, 0, offsetof(MatroskaMasteringMeta, white_y) },
493 { MATROSKA_ID_VIDEOCOLOR_LUMINANCEMIN, EBML_FLOAT, 1, 0, offsetof(MatroskaMasteringMeta, min_luminance) },
494 { MATROSKA_ID_VIDEOCOLOR_LUMINANCEMAX, EBML_FLOAT, 0, 0, offsetof(MatroskaMasteringMeta, max_luminance) },
495 CHILD_OF(matroska_track_video_color)
496 };
497
498 static EbmlSyntax matroska_track_video_color[] = {
499 { MATROSKA_ID_VIDEOCOLORMATRIXCOEFF, EBML_UINT, 0, 0, offsetof(MatroskaTrackVideoColor, matrix_coefficients), { .u = AVCOL_SPC_UNSPECIFIED } },
500 { MATROSKA_ID_VIDEOCOLORBITSPERCHANNEL, EBML_UINT, 0, 0, offsetof(MatroskaTrackVideoColor, bits_per_channel), { .u = 0 } },
501 { MATROSKA_ID_VIDEOCOLORCHROMASUBHORZ, EBML_UINT, 0, 0, offsetof(MatroskaTrackVideoColor, chroma_sub_horz) },
502 { MATROSKA_ID_VIDEOCOLORCHROMASUBVERT, EBML_UINT, 0, 0, offsetof(MatroskaTrackVideoColor, chroma_sub_vert) },
503 { MATROSKA_ID_VIDEOCOLORCBSUBHORZ, EBML_UINT, 0, 0, offsetof(MatroskaTrackVideoColor, cb_sub_horz) },
504 { MATROSKA_ID_VIDEOCOLORCBSUBVERT, EBML_UINT, 0, 0, offsetof(MatroskaTrackVideoColor, cb_sub_vert) },
505 { MATROSKA_ID_VIDEOCOLORCHROMASITINGHORZ, EBML_UINT, 0, 0, offsetof(MatroskaTrackVideoColor, chroma_siting_horz), { .u = MATROSKA_COLOUR_CHROMASITINGHORZ_UNDETERMINED } },
506 { MATROSKA_ID_VIDEOCOLORCHROMASITINGVERT, EBML_UINT, 0, 0, offsetof(MatroskaTrackVideoColor, chroma_siting_vert), { .u = MATROSKA_COLOUR_CHROMASITINGVERT_UNDETERMINED } },
507 { MATROSKA_ID_VIDEOCOLORRANGE, EBML_UINT, 0, 0, offsetof(MatroskaTrackVideoColor, range), { .u = AVCOL_RANGE_UNSPECIFIED } },
508 { MATROSKA_ID_VIDEOCOLORTRANSFERCHARACTERISTICS, EBML_UINT, 0, 0, offsetof(MatroskaTrackVideoColor, transfer_characteristics), { .u = AVCOL_TRC_UNSPECIFIED } },
509 { MATROSKA_ID_VIDEOCOLORPRIMARIES, EBML_UINT, 0, 0, offsetof(MatroskaTrackVideoColor, primaries), { .u = AVCOL_PRI_UNSPECIFIED } },
510 { MATROSKA_ID_VIDEOCOLORMAXCLL, EBML_UINT, 0, 0, offsetof(MatroskaTrackVideoColor, max_cll) },
511 { MATROSKA_ID_VIDEOCOLORMAXFALL, EBML_UINT, 0, 0, offsetof(MatroskaTrackVideoColor, max_fall) },
512 { MATROSKA_ID_VIDEOCOLORMASTERINGMETA, EBML_NEST, 0, 0, offsetof(MatroskaTrackVideoColor, mastering_meta), { .n = matroska_mastering_meta } },
513 CHILD_OF(matroska_track_video)
514 };
515
516 static EbmlSyntax matroska_track_video_projection[] = {
517 { MATROSKA_ID_VIDEOPROJECTIONTYPE, EBML_UINT, 0, 0, offsetof(MatroskaTrackVideoProjection, type), { .u = MATROSKA_VIDEO_PROJECTION_TYPE_RECTANGULAR } },
518 { MATROSKA_ID_VIDEOPROJECTIONPRIVATE, EBML_BIN, 0, 0, offsetof(MatroskaTrackVideoProjection, private) },
519 { MATROSKA_ID_VIDEOPROJECTIONPOSEYAW, EBML_FLOAT, 0, 0, offsetof(MatroskaTrackVideoProjection, yaw), { .f = 0.0 } },
520 { MATROSKA_ID_VIDEOPROJECTIONPOSEPITCH, EBML_FLOAT, 0, 0, offsetof(MatroskaTrackVideoProjection, pitch), { .f = 0.0 } },
521 { MATROSKA_ID_VIDEOPROJECTIONPOSEROLL, EBML_FLOAT, 0, 0, offsetof(MatroskaTrackVideoProjection, roll), { .f = 0.0 } },
522 CHILD_OF(matroska_track_video)
523 };
524
525 static EbmlSyntax matroska_track_video[] = {
526 { MATROSKA_ID_VIDEOFRAMERATE, EBML_FLOAT, 0, 0, offsetof(MatroskaTrackVideo, frame_rate) },
527 { MATROSKA_ID_VIDEODISPLAYWIDTH, EBML_UINT, 0, 0, offsetof(MatroskaTrackVideo, display_width), { .u=-1 } },
528 { MATROSKA_ID_VIDEODISPLAYHEIGHT, EBML_UINT, 0, 0, offsetof(MatroskaTrackVideo, display_height), { .u=-1 } },
529 { MATROSKA_ID_VIDEOPIXELWIDTH, EBML_UINT, 0, 0, offsetof(MatroskaTrackVideo, pixel_width) },
530 { MATROSKA_ID_VIDEOPIXELHEIGHT, EBML_UINT, 0, 0, offsetof(MatroskaTrackVideo, pixel_height) },
531 { MATROSKA_ID_VIDEOCOLORSPACE, EBML_BIN, 0, 0, offsetof(MatroskaTrackVideo, color_space) },
532 { MATROSKA_ID_VIDEOALPHAMODE, EBML_UINT, 0, 0, offsetof(MatroskaTrackVideo, alpha_mode), { .u = 0 } },
533 { MATROSKA_ID_VIDEOCOLOR, EBML_NEST, 0, sizeof(MatroskaTrackVideoColor), offsetof(MatroskaTrackVideo, color), { .n = matroska_track_video_color } },
534 { MATROSKA_ID_VIDEOPROJECTION, EBML_NEST, 0, 0, offsetof(MatroskaTrackVideo, projection), { .n = matroska_track_video_projection } },
535 { MATROSKA_ID_VIDEOPIXELCROPB, EBML_UINT, 0, 0, offsetof(MatroskaTrackVideo, pixel_cropb), {.u = 0 } },
536 { MATROSKA_ID_VIDEOPIXELCROPT, EBML_UINT, 0, 0, offsetof(MatroskaTrackVideo, pixel_cropt), {.u = 0 } },
537 { MATROSKA_ID_VIDEOPIXELCROPL, EBML_UINT, 0, 0, offsetof(MatroskaTrackVideo, pixel_cropl), {.u = 0 } },
538 { MATROSKA_ID_VIDEOPIXELCROPR, EBML_UINT, 0, 0, offsetof(MatroskaTrackVideo, pixel_cropr), {.u = 0 } },
539 { MATROSKA_ID_VIDEODISPLAYUNIT, EBML_UINT, 0, 0, offsetof(MatroskaTrackVideo, display_unit), { .u= MATROSKA_VIDEO_DISPLAYUNIT_PIXELS } },
540 { MATROSKA_ID_VIDEOFLAGINTERLACED, EBML_UINT, 0, 0, offsetof(MatroskaTrackVideo, interlaced), { .u = MATROSKA_VIDEO_INTERLACE_FLAG_UNDETERMINED } },
541 { MATROSKA_ID_VIDEOFIELDORDER, EBML_UINT, 0, 0, offsetof(MatroskaTrackVideo, field_order), { .u = MATROSKA_VIDEO_FIELDORDER_UNDETERMINED } },
542 { MATROSKA_ID_VIDEOSTEREOMODE, EBML_UINT, 0, 0, offsetof(MatroskaTrackVideo, stereo_mode), { .u = MATROSKA_VIDEO_STEREOMODE_TYPE_NB } },
543 { MATROSKA_ID_VIDEOASPECTRATIO, EBML_NONE },
544 CHILD_OF(matroska_track)
545 };
546
547 static EbmlSyntax matroska_track_audio[] = {
548 { MATROSKA_ID_AUDIOSAMPLINGFREQ, EBML_FLOAT, 0, 0, offsetof(MatroskaTrackAudio, samplerate), { .f = 8000.0 } },
549 { MATROSKA_ID_AUDIOOUTSAMPLINGFREQ, EBML_FLOAT, 0, 0, offsetof(MatroskaTrackAudio, out_samplerate) },
550 { MATROSKA_ID_AUDIOBITDEPTH, EBML_UINT, 0, 0, offsetof(MatroskaTrackAudio, bitdepth) },
551 { MATROSKA_ID_AUDIOCHANNELS, EBML_UINT, 0, 0, offsetof(MatroskaTrackAudio, channels), { .u = 1 } },
552 CHILD_OF(matroska_track)
553 };
554
555 static EbmlSyntax matroska_track_encoding_compression[] = {
556 { MATROSKA_ID_ENCODINGCOMPALGO, EBML_UINT, 0, 0, offsetof(MatroskaTrackCompression, algo), { .u = MATROSKA_TRACK_ENCODING_COMP_ZLIB } },
557 { MATROSKA_ID_ENCODINGCOMPSETTINGS, EBML_BIN, 0, 0, offsetof(MatroskaTrackCompression, settings) },
558 CHILD_OF(matroska_track_encoding)
559 };
560
561 static EbmlSyntax matroska_track_encoding_encryption[] = {
562 { MATROSKA_ID_ENCODINGENCALGO, EBML_UINT, 0, 0, offsetof(MatroskaTrackEncryption,algo), {.u = 0} },
563 { MATROSKA_ID_ENCODINGENCKEYID, EBML_BIN, 0, 0, offsetof(MatroskaTrackEncryption,key_id) },
564 { MATROSKA_ID_ENCODINGENCAESSETTINGS, EBML_NONE },
565 { MATROSKA_ID_ENCODINGSIGALGO, EBML_NONE },
566 { MATROSKA_ID_ENCODINGSIGHASHALGO, EBML_NONE },
567 { MATROSKA_ID_ENCODINGSIGKEYID, EBML_NONE },
568 { MATROSKA_ID_ENCODINGSIGNATURE, EBML_NONE },
569 CHILD_OF(matroska_track_encoding)
570 };
571 static EbmlSyntax matroska_track_encoding[] = {
572 { MATROSKA_ID_ENCODINGSCOPE, EBML_UINT, 0, 0, offsetof(MatroskaTrackEncoding, scope), { .u = 1 } },
573 { MATROSKA_ID_ENCODINGTYPE, EBML_UINT, 0, 0, offsetof(MatroskaTrackEncoding, type), { .u = 0 } },
574 { MATROSKA_ID_ENCODINGCOMPRESSION, EBML_NEST, 0, 0, offsetof(MatroskaTrackEncoding, compression), { .n = matroska_track_encoding_compression } },
575 { MATROSKA_ID_ENCODINGENCRYPTION, EBML_NEST, 0, 0, offsetof(MatroskaTrackEncoding, encryption), { .n = matroska_track_encoding_encryption } },
576 { MATROSKA_ID_ENCODINGORDER, EBML_NONE },
577 CHILD_OF(matroska_track_encodings)
578 };
579
580 static EbmlSyntax matroska_track_encodings[] = {
581 { MATROSKA_ID_TRACKCONTENTENCODING, EBML_NEST, 0, sizeof(MatroskaTrackEncoding), offsetof(MatroskaTrack, encodings), { .n = matroska_track_encoding } },
582 CHILD_OF(matroska_track)
583 };
584
585 static EbmlSyntax matroska_track_plane[] = {
586 { MATROSKA_ID_TRACKPLANEUID, EBML_UINT, 0, 0, offsetof(MatroskaTrackPlane,uid) },
587 { MATROSKA_ID_TRACKPLANETYPE, EBML_UINT, 0, 0, offsetof(MatroskaTrackPlane,type) },
588 CHILD_OF(matroska_track_combine_planes)
589 };
590
591 static EbmlSyntax matroska_track_combine_planes[] = {
592 { MATROSKA_ID_TRACKPLANE, EBML_NEST, 0, sizeof(MatroskaTrackPlane), offsetof(MatroskaTrackOperation,combine_planes), {.n = matroska_track_plane} },
593 CHILD_OF(matroska_track_operation)
594 };
595
596 static EbmlSyntax matroska_track_operation[] = {
597 { MATROSKA_ID_TRACKCOMBINEPLANES, EBML_NEST, 0, 0, 0, {.n = matroska_track_combine_planes} },
598 CHILD_OF(matroska_track)
599 };
600
601 static EbmlSyntax matroska_block_addition_mapping[] = {
602 { MATROSKA_ID_BLKADDIDVALUE, EBML_UINT, 0, 0, offsetof(MatroskaBlockAdditionMapping, value) },
603 { MATROSKA_ID_BLKADDIDNAME, EBML_STR, 0, 0, offsetof(MatroskaBlockAdditionMapping, name) },
604 { MATROSKA_ID_BLKADDIDTYPE, EBML_UINT, 0, 0, offsetof(MatroskaBlockAdditionMapping, type), { .u = MATROSKA_BLOCK_ADD_ID_TYPE_DEFAULT } },
605 { MATROSKA_ID_BLKADDIDEXTRADATA, EBML_BIN, 0, 0, offsetof(MatroskaBlockAdditionMapping, extradata) },
606 CHILD_OF(matroska_track)
607 };
608
609 static EbmlSyntax matroska_track[] = {
610 { MATROSKA_ID_TRACKNUMBER, EBML_UINT, 0, 0, offsetof(MatroskaTrack, num) },
611 { MATROSKA_ID_TRACKNAME, EBML_UTF8, 0, 0, offsetof(MatroskaTrack, name) },
612 { MATROSKA_ID_TRACKUID, EBML_UINT, 0, 0, offsetof(MatroskaTrack, uid) },
613 { MATROSKA_ID_TRACKTYPE, EBML_UINT, 0, 0, offsetof(MatroskaTrack, type) },
614 { MATROSKA_ID_CODECID, EBML_STR, 0, 0, offsetof(MatroskaTrack, codec_id) },
615 { MATROSKA_ID_CODECPRIVATE, EBML_BIN, 0, 0, offsetof(MatroskaTrack, codec_priv) },
616 { MATROSKA_ID_CODECDELAY, EBML_UINT, 0, 0, offsetof(MatroskaTrack, codec_delay), { .u = 0 } },
617 { MATROSKA_ID_TRACKLANGUAGE, EBML_STR, 0, 0, offsetof(MatroskaTrack, language), { .s = "eng" } },
618 { MATROSKA_ID_TRACKDEFAULTDURATION, EBML_UINT, 0, 0, offsetof(MatroskaTrack, default_duration) },
619 { MATROSKA_ID_TRACKTIMECODESCALE, EBML_FLOAT, 0, 0, offsetof(MatroskaTrack, time_scale), { .f = 1.0 } },
620 { MATROSKA_ID_TRACKFLAGCOMMENTARY, EBML_UINT, 0, 0, offsetof(MatroskaTrack, flag_comment), { .u = 0 } },
621 { MATROSKA_ID_TRACKFLAGDEFAULT, EBML_UINT, 0, 0, offsetof(MatroskaTrack, flag_default), { .u = 1 } },
622 { MATROSKA_ID_TRACKFLAGFORCED, EBML_UINT, 0, 0, offsetof(MatroskaTrack, flag_forced), { .u = 0 } },
623 { MATROSKA_ID_TRACKFLAGHEARINGIMPAIRED, EBML_UINT, 0, 0, offsetof(MatroskaTrack, flag_hearingimpaired), { .u = 0 } },
624 { MATROSKA_ID_TRACKFLAGVISUALIMPAIRED, EBML_UINT, 0, 0, offsetof(MatroskaTrack, flag_visualimpaired), { .u = 0 } },
625 { MATROSKA_ID_TRACKFLAGTEXTDESCRIPTIONS, EBML_UINT, 0, 0, offsetof(MatroskaTrack, flag_textdescriptions), { .u = 0 } },
626 { MATROSKA_ID_TRACKFLAGORIGINAL, EBML_UINT, 1, 0, offsetof(MatroskaTrack, flag_original), {.u = 0 } },
627 { MATROSKA_ID_TRACKVIDEO, EBML_NEST, 0, 0, offsetof(MatroskaTrack, video), { .n = matroska_track_video } },
628 { MATROSKA_ID_TRACKAUDIO, EBML_NEST, 0, 0, offsetof(MatroskaTrack, audio), { .n = matroska_track_audio } },
629 { MATROSKA_ID_TRACKOPERATION, EBML_NEST, 0, 0, offsetof(MatroskaTrack, operation), { .n = matroska_track_operation } },
630 { MATROSKA_ID_TRACKCONTENTENCODINGS, EBML_NEST, 0, 0, 0, { .n = matroska_track_encodings } },
631 { MATROSKA_ID_TRACKMAXBLKADDID, EBML_UINT, 0, 0, offsetof(MatroskaTrack, max_block_additional_id), { .u = 0 } },
632 { MATROSKA_ID_TRACKBLKADDMAPPING, EBML_NEST, 0, sizeof(MatroskaBlockAdditionMapping), offsetof(MatroskaTrack, block_addition_mappings), { .n = matroska_block_addition_mapping } },
633 { MATROSKA_ID_SEEKPREROLL, EBML_UINT, 0, 0, offsetof(MatroskaTrack, seek_preroll), { .u = 0 } },
634 { MATROSKA_ID_TRACKFLAGENABLED, EBML_NONE },
635 { MATROSKA_ID_TRACKFLAGLACING, EBML_NONE },
636 { MATROSKA_ID_CODECNAME, EBML_NONE },
637 { MATROSKA_ID_CODECDECODEALL, EBML_NONE },
638 { MATROSKA_ID_CODECINFOURL, EBML_NONE },
639 { MATROSKA_ID_CODECDOWNLOADURL, EBML_NONE },
640 { MATROSKA_ID_TRACKMINCACHE, EBML_NONE },
641 { MATROSKA_ID_TRACKMAXCACHE, EBML_NONE },
642 CHILD_OF(matroska_tracks)
643 };
644
645 static EbmlSyntax matroska_tracks[] = {
646 { MATROSKA_ID_TRACKENTRY, EBML_NEST, 0, sizeof(MatroskaTrack), offsetof(MatroskaDemuxContext, tracks), { .n = matroska_track } },
647 CHILD_OF(matroska_segment)
648 };
649
650 static EbmlSyntax matroska_attachment[] = {
651 { MATROSKA_ID_FILEUID, EBML_UINT, 0, 0, offsetof(MatroskaAttachment, uid) },
652 { MATROSKA_ID_FILENAME, EBML_UTF8, 0, 0, offsetof(MatroskaAttachment, filename) },
653 { MATROSKA_ID_FILEMIMETYPE, EBML_STR, 0, 0, offsetof(MatroskaAttachment, mime) },
654 { MATROSKA_ID_FILEDATA, EBML_BIN, 0, 0, offsetof(MatroskaAttachment, bin) },
655 { MATROSKA_ID_FILEDESC, EBML_UTF8, 0, 0, offsetof(MatroskaAttachment, description) },
656 CHILD_OF(matroska_attachments)
657 };
658
659 static EbmlSyntax matroska_attachments[] = {
660 { MATROSKA_ID_ATTACHEDFILE, EBML_NEST, 0, sizeof(MatroskaAttachment), offsetof(MatroskaDemuxContext, attachments), { .n = matroska_attachment } },
661 CHILD_OF(matroska_segment)
662 };
663
664 static EbmlSyntax matroska_chapter_display[] = {
665 { MATROSKA_ID_CHAPSTRING, EBML_UTF8, 0, 0, offsetof(MatroskaChapter, title) },
666 { MATROSKA_ID_CHAPLANG, EBML_NONE },
667 { MATROSKA_ID_CHAPCOUNTRY, EBML_NONE },
668 CHILD_OF(matroska_chapter_entry)
669 };
670
671 static EbmlSyntax matroska_chapter_entry[] = {
672 { MATROSKA_ID_CHAPTERTIMESTART, EBML_UINT, 0, 0, offsetof(MatroskaChapter, start), { .u = AV_NOPTS_VALUE } },
673 { MATROSKA_ID_CHAPTERTIMEEND, EBML_UINT, 0, 0, offsetof(MatroskaChapter, end), { .u = AV_NOPTS_VALUE } },
674 { MATROSKA_ID_CHAPTERUID, EBML_UINT, 0, 0, offsetof(MatroskaChapter, uid) },
675 { MATROSKA_ID_CHAPTERDISPLAY, EBML_NEST, 0, 0, 0, { .n = matroska_chapter_display } },
676 { MATROSKA_ID_CHAPTERFLAGHIDDEN, EBML_NONE },
677 { MATROSKA_ID_CHAPTERFLAGENABLED, EBML_NONE },
678 { MATROSKA_ID_CHAPTERPHYSEQUIV, EBML_NONE },
679 { MATROSKA_ID_CHAPTERATOM, EBML_NONE },
680 CHILD_OF(matroska_chapter)
681 };
682
683 static EbmlSyntax matroska_chapter[] = {
684 { MATROSKA_ID_CHAPTERATOM, EBML_NEST, 0, sizeof(MatroskaChapter), offsetof(MatroskaDemuxContext, chapters), { .n = matroska_chapter_entry } },
685 { MATROSKA_ID_EDITIONUID, EBML_NONE },
686 { MATROSKA_ID_EDITIONFLAGHIDDEN, EBML_NONE },
687 { MATROSKA_ID_EDITIONFLAGDEFAULT, EBML_NONE },
688 { MATROSKA_ID_EDITIONFLAGORDERED, EBML_NONE },
689 CHILD_OF(matroska_chapters)
690 };
691
692 static EbmlSyntax matroska_chapters[] = {
693 { MATROSKA_ID_EDITIONENTRY, EBML_NEST, 0, 0, 0, { .n = matroska_chapter } },
694 CHILD_OF(matroska_segment)
695 };
696
697 static EbmlSyntax matroska_index_pos[] = {
698 { MATROSKA_ID_CUETRACK, EBML_UINT, 0, 0, offsetof(MatroskaIndexPos, track) },
699 { MATROSKA_ID_CUECLUSTERPOSITION, EBML_UINT, 0, 0, offsetof(MatroskaIndexPos, pos) },
700 { MATROSKA_ID_CUERELATIVEPOSITION,EBML_NONE },
701 { MATROSKA_ID_CUEDURATION, EBML_NONE },
702 { MATROSKA_ID_CUEBLOCKNUMBER, EBML_NONE },
703 CHILD_OF(matroska_index_entry)
704 };
705
706 static EbmlSyntax matroska_index_entry[] = {
707 { MATROSKA_ID_CUETIME, EBML_UINT, 0, 0, offsetof(MatroskaIndex, time) },
708 { MATROSKA_ID_CUETRACKPOSITION, EBML_NEST, 0, sizeof(MatroskaIndexPos), offsetof(MatroskaIndex, pos), { .n = matroska_index_pos } },
709 CHILD_OF(matroska_index)
710 };
711
712 static EbmlSyntax matroska_index[] = {
713 { MATROSKA_ID_POINTENTRY, EBML_NEST, 0, sizeof(MatroskaIndex), offsetof(MatroskaDemuxContext, index), { .n = matroska_index_entry } },
714 CHILD_OF(matroska_segment)
715 };
716
717 static EbmlSyntax matroska_simpletag[] = {
718 { MATROSKA_ID_TAGNAME, EBML_UTF8, 0, 0, offsetof(MatroskaTag, name) },
719 { MATROSKA_ID_TAGSTRING, EBML_UTF8, 0, 0, offsetof(MatroskaTag, string) },
720 { MATROSKA_ID_TAGLANG, EBML_STR, 0, 0, offsetof(MatroskaTag, lang), { .s = "und" } },
721 { MATROSKA_ID_TAGDEFAULT, EBML_UINT, 0, 0, offsetof(MatroskaTag, def) },
722 { MATROSKA_ID_TAGDEFAULT_BUG, EBML_UINT, 0, 0, offsetof(MatroskaTag, def) },
723 { MATROSKA_ID_SIMPLETAG, EBML_NEST, 0, sizeof(MatroskaTag), offsetof(MatroskaTag, sub), { .n = matroska_simpletag } },
724 CHILD_OF(matroska_tag)
725 };
726
727 static EbmlSyntax matroska_tagtargets[] = {
728 { MATROSKA_ID_TAGTARGETS_TYPE, EBML_STR, 0, 0, offsetof(MatroskaTagTarget, type) },
729 { MATROSKA_ID_TAGTARGETS_TYPEVALUE, EBML_UINT, 0, 0, offsetof(MatroskaTagTarget, typevalue), { .u = 50 } },
730 { MATROSKA_ID_TAGTARGETS_TRACKUID, EBML_UINT, 0, 0, offsetof(MatroskaTagTarget, trackuid), { .u = 0 } },
731 { MATROSKA_ID_TAGTARGETS_CHAPTERUID, EBML_UINT, 0, 0, offsetof(MatroskaTagTarget, chapteruid), { .u = 0 } },
732 { MATROSKA_ID_TAGTARGETS_ATTACHUID, EBML_UINT, 0, 0, offsetof(MatroskaTagTarget, attachuid), { .u = 0 } },
733 CHILD_OF(matroska_tag)
734 };
735
736 static EbmlSyntax matroska_tag[] = {
737 { MATROSKA_ID_SIMPLETAG, EBML_NEST, 0, sizeof(MatroskaTag), offsetof(MatroskaTags, tag), { .n = matroska_simpletag } },
738 { MATROSKA_ID_TAGTARGETS, EBML_NEST, 0, 0, offsetof(MatroskaTags, target), { .n = matroska_tagtargets } },
739 CHILD_OF(matroska_tags)
740 };
741
742 static EbmlSyntax matroska_tags[] = {
743 { MATROSKA_ID_TAG, EBML_NEST, 0, sizeof(MatroskaTags), offsetof(MatroskaDemuxContext, tags), { .n = matroska_tag } },
744 CHILD_OF(matroska_segment)
745 };
746
747 static EbmlSyntax matroska_seekhead_entry[] = {
748 { MATROSKA_ID_SEEKID, EBML_UINT, 0, 0, offsetof(MatroskaSeekhead, id) },
749 { MATROSKA_ID_SEEKPOSITION, EBML_UINT, 0, 0, offsetof(MatroskaSeekhead, pos), { .u = -1 } },
750 CHILD_OF(matroska_seekhead)
751 };
752
753 static EbmlSyntax matroska_seekhead[] = {
754 { MATROSKA_ID_SEEKENTRY, EBML_NEST, 0, sizeof(MatroskaSeekhead), offsetof(MatroskaDemuxContext, seekhead), { .n = matroska_seekhead_entry } },
755 CHILD_OF(matroska_segment)
756 };
757
758 static EbmlSyntax matroska_segment[] = {
759 { MATROSKA_ID_CLUSTER, EBML_STOP },
760 { MATROSKA_ID_INFO, EBML_LEVEL1, 0, 0, 0, { .n = matroska_info } },
761 { MATROSKA_ID_TRACKS, EBML_LEVEL1, 0, 0, 0, { .n = matroska_tracks } },
762 { MATROSKA_ID_ATTACHMENTS, EBML_LEVEL1, 0, 0, 0, { .n = matroska_attachments } },
763 { MATROSKA_ID_CHAPTERS, EBML_LEVEL1, 0, 0, 0, { .n = matroska_chapters } },
764 { MATROSKA_ID_CUES, EBML_LEVEL1, 0, 0, 0, { .n = matroska_index } },
765 { MATROSKA_ID_TAGS, EBML_LEVEL1, 0, 0, 0, { .n = matroska_tags } },
766 { MATROSKA_ID_SEEKHEAD, EBML_LEVEL1, 0, 0, 0, { .n = matroska_seekhead } },
767 { 0 } /* We don't want to go back to level 0, so don't add the parent. */
768 };
769
770 static EbmlSyntax matroska_segments[] = {
771 { MATROSKA_ID_SEGMENT, EBML_NEST, 0, 0, 0, { .n = matroska_segment } },
772 { 0 }
773 };
774
775 static EbmlSyntax matroska_blockmore[] = {
776 { MATROSKA_ID_BLOCKADDID, EBML_UINT, 0, 0, offsetof(MatroskaBlockMore,additional_id), { .u = MATROSKA_BLOCK_ADD_ID_OPAQUE } },
777 { MATROSKA_ID_BLOCKADDITIONAL, EBML_BIN, 0, 0, offsetof(MatroskaBlockMore,additional) },
778 CHILD_OF(matroska_blockadditions)
779 };
780
781 static EbmlSyntax matroska_blockadditions[] = {
782 { MATROSKA_ID_BLOCKMORE, EBML_NEST, 0, sizeof(MatroskaBlockMore), offsetof(MatroskaBlock, blockmore), { .n = matroska_blockmore } },
783 CHILD_OF(matroska_blockgroup)
784 };
785
786 static EbmlSyntax matroska_blockgroup[] = {
787 { MATROSKA_ID_BLOCK, EBML_BIN, 0, 0, offsetof(MatroskaBlock, bin) },
788 { MATROSKA_ID_BLOCKADDITIONS, EBML_NEST, 0, 0, 0, { .n = matroska_blockadditions} },
789 { MATROSKA_ID_BLOCKDURATION, EBML_UINT, 0, 0, offsetof(MatroskaBlock, duration) },
790 { MATROSKA_ID_DISCARDPADDING, EBML_SINT, 0, 0, offsetof(MatroskaBlock, discard_padding) },
791 { MATROSKA_ID_BLOCKREFERENCE, EBML_SINT, 1, 0, offsetof(MatroskaBlock, reference) },
792 { MATROSKA_ID_CODECSTATE, EBML_NONE },
793 { 1, EBML_UINT, 0, 0, offsetof(MatroskaBlock, non_simple), { .u = 1 } },
794 CHILD_OF(matroska_cluster_parsing)
795 };
796
797 // The following array contains SimpleBlock and BlockGroup twice
798 // in order to reuse the other values for matroska_cluster_enter.
799 static EbmlSyntax matroska_cluster_parsing[] = {
800 { MATROSKA_ID_SIMPLEBLOCK, EBML_BIN, 0, 0, offsetof(MatroskaBlock, bin) },
801 { MATROSKA_ID_BLOCKGROUP, EBML_NEST, 0, 0, 0, { .n = matroska_blockgroup } },
802 { MATROSKA_ID_CLUSTERTIMECODE, EBML_UINT, 0, 0, offsetof(MatroskaCluster, timecode) },
803 { MATROSKA_ID_SIMPLEBLOCK, EBML_STOP },
804 { MATROSKA_ID_BLOCKGROUP, EBML_STOP },
805 { MATROSKA_ID_CLUSTERPOSITION, EBML_NONE },
806 { MATROSKA_ID_CLUSTERPREVSIZE, EBML_NONE },
807 CHILD_OF(matroska_segment)
808 };
809
810 static EbmlSyntax matroska_cluster_enter[] = {
811 { MATROSKA_ID_CLUSTER, EBML_NEST, 0, 0, 0, { .n = &matroska_cluster_parsing[2] } },
812 { 0 }
813 };
814 #undef CHILD_OF
815
816 static const CodecMime mkv_image_mime_tags[] = {
817 {"image/gif" , AV_CODEC_ID_GIF},
818 {"image/jpeg" , AV_CODEC_ID_MJPEG},
819 {"image/png" , AV_CODEC_ID_PNG},
820 {"image/tiff" , AV_CODEC_ID_TIFF},
821
822 {"" , AV_CODEC_ID_NONE}
823 };
824
825 static const CodecMime mkv_mime_tags[] = {
826 {"application/x-truetype-font", AV_CODEC_ID_TTF},
827 {"application/x-font" , AV_CODEC_ID_TTF},
828 {"application/vnd.ms-opentype", AV_CODEC_ID_OTF},
829 {"binary" , AV_CODEC_ID_BIN_DATA},
830
831 {"" , AV_CODEC_ID_NONE}
832 };
833
834 static const char * const matroska_video_stereo_plane[MATROSKA_VIDEO_STEREO_PLANE_COUNT] = {
835 "left",
836 "right",
837 "background",
838 };
839
840 static const char *const matroska_doctypes[] = { "matroska", "webm" };
841
842 /*
843 * This function prepares the status for parsing of level 1 elements.
844 */
845 198 static int matroska_reset_status(MatroskaDemuxContext *matroska,
846 uint32_t id, int64_t position)
847 {
848 198 int64_t err = 0;
849
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198 if (position >= 0) {
850 185 err = avio_seek(matroska->ctx->pb, position, SEEK_SET);
851
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185 if (err > 0)
852 185 err = 0;
853 } else
854 13 position = avio_tell(matroska->ctx->pb);
855
856 198 matroska->current_id = id;
857 198 matroska->num_levels = 1;
858 198 matroska->unknown_count = 0;
859 198 matroska->resync_pos = position;
860
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198 if (id)
861 35 matroska->resync_pos -= (av_log2(id) + 7) / 8;
862
863 198 return err;
864 }
865
866 13 static int matroska_resync(MatroskaDemuxContext *matroska, int64_t last_pos)
867 {
868 13 AVIOContext *pb = matroska->ctx->pb;
869 uint32_t id;
870
871 /* Try to seek to the last position to resync from. If this doesn't work,
872 * we resync from the earliest position available: The start of the buffer. */
873
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13 if (last_pos < avio_tell(pb) && avio_seek(pb, last_pos + 1, SEEK_SET) < 0) {
874 2 av_log(matroska->ctx, AV_LOG_WARNING,
875 "Seek to desired resync point failed. Seeking to "
876 "earliest point available instead.\n");
877
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2 avio_seek(pb, FFMAX(avio_tell(pb) + (pb->buffer - pb->buf_ptr),
878 last_pos + 1), SEEK_SET);
879 }
880
881 13 id = avio_rb32(pb);
882
883 // try to find a toplevel element
884
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690599 while (!avio_feof(pb)) {
885
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690589 if (id == MATROSKA_ID_INFO || id == MATROSKA_ID_TRACKS ||
886
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690589 id == MATROSKA_ID_CUES || id == MATROSKA_ID_TAGS ||
887
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690587 id == MATROSKA_ID_SEEKHEAD || id == MATROSKA_ID_ATTACHMENTS ||
888
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690586 id == MATROSKA_ID_CLUSTER || id == MATROSKA_ID_CHAPTERS) {
889 /* Prepare the context for parsing of a level 1 element. */
890 3 matroska_reset_status(matroska, id, -1);
891 /* Given that we are here means that an error has occurred,
892 * so treat the segment as unknown length in order not to
893 * discard valid data that happens to be beyond the designated
894 * end of the segment. */
895 3 matroska->levels[0].length = EBML_UNKNOWN_LENGTH;
896 3 return 0;
897 }
898 690586 id = (id << 8) | avio_r8(pb);
899 }
900
901 10 matroska->done = 1;
902
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10 return pb->error ? pb->error : AVERROR_EOF;
903 }
904
905 /*
906 * Read: an "EBML number", which is defined as a variable-length
907 * array of bytes. The first byte indicates the length by giving a
908 * number of 0-bits followed by a one. The position of the first
909 * "one" bit inside the first byte indicates the length of this
910 * number.
911 * Returns: number of bytes read, < 0 on error
912 */
913 143374 static int ebml_read_num(MatroskaDemuxContext *matroska, AVIOContext *pb,
914 int max_size, uint64_t *number, int eof_forbidden)
915 {
916 143374 int read, n = 1;
917 uint64_t total;
918 int64_t pos;
919
920 /* The first byte tells us the length in bytes - except when it is zero. */
921 143374 total = avio_r8(pb);
922
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143374 if (pb->eof_reached)
923 14 goto err;
924
925 /* get the length of the EBML number */
926 143360 read = 8 - ff_log2_tab[total];
927
928
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143360 if (!total || read > max_size) {
929 pos = avio_tell(pb) - 1;
930 if (!total) {
931 av_log(matroska->ctx, AV_LOG_ERROR,
932 "0x00 at pos %"PRId64" (0x%"PRIx64") invalid as first byte "
933 "of an EBML number\n", pos, pos);
934 } else {
935 av_log(matroska->ctx, AV_LOG_ERROR,
936 "Length %d indicated by an EBML number's first byte 0x%02x "
937 "at pos %"PRId64" (0x%"PRIx64") exceeds max length %d.\n",
938 read, (uint8_t) total, pos, pos, max_size);
939 }
940 return AVERROR_INVALIDDATA;
941 }
942
943 /* read out length */
944 143360 total ^= 1 << ff_log2_tab[total];
945
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215244 while (n++ < read)
946 71884 total = (total << 8) | avio_r8(pb);
947
948
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143360 if (pb->eof_reached) {
949 eof_forbidden = 1;
950 goto err;
951 }
952
953 143360 *number = total;
954
955 143360 return read;
956
957 14 err:
958 14 pos = avio_tell(pb);
959
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14 if (pb->error) {
960 av_log(matroska->ctx, AV_LOG_ERROR,
961 "Read error at pos. %"PRIu64" (0x%"PRIx64")\n",
962 pos, pos);
963 return pb->error;
964 }
965
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14 if (eof_forbidden) {
966 av_log(matroska->ctx, AV_LOG_ERROR, "File ended prematurely "
967 "at pos. %"PRIu64" (0x%"PRIx64")\n", pos, pos);
968 return AVERROR(EIO);
969 }
970 14 return AVERROR_EOF;
971 }
972
973 /**
974 * Read a EBML length value.
975 * This needs special handling for the "unknown length" case which has multiple
976 * encodings.
977 */
978 56153 static int ebml_read_length(MatroskaDemuxContext *matroska, AVIOContext *pb,
979 uint64_t *number)
980 {
981 56153 int res = ebml_read_num(matroska, pb, 8, number, 1);
982
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✓ Branch 3 taken 56136 times.
56153 if (res > 0 && *number + 1 == 1ULL << (7 * res))
983 17 *number = EBML_UNKNOWN_LENGTH;
984 56153 return res;
985 }
986
987 /*
988 * Read the next element as an unsigned int.
989 * Returns NEEDS_CHECKING unless size == 0.
990 */
991 10768 static int ebml_read_uint(AVIOContext *pb, int size,
992 uint64_t default_value, uint64_t *num)
993 {
994 10768 int n = 0;
995
996
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10768 if (size == 0) {
997 *num = default_value;
998 return 0;
999 }
1000 /* big-endian ordering; build up number */
1001 10768 *num = 0;
1002
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37982 while (n++ < size)
1003 27214 *num = (*num << 8) | avio_r8(pb);
1004
1005 10768 return NEEDS_CHECKING;
1006 }
1007
1008 /*
1009 * Read the next element as a signed int.
1010 * Returns NEEDS_CHECKING unless size == 0.
1011 */
1012 160 static int ebml_read_sint(AVIOContext *pb, int size,
1013 int64_t default_value, int64_t *num)
1014 {
1015 160 int n = 1;
1016
1017
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160 if (size == 0) {
1018 *num = default_value;
1019 return 0;
1020 } else {
1021 160 *num = sign_extend(avio_r8(pb), 8);
1022
1023 /* big-endian ordering; build up number */
1024
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255 while (n++ < size)
1025 95 *num = ((uint64_t)*num << 8) | avio_r8(pb);
1026 }
1027
1028 160 return NEEDS_CHECKING;
1029 }
1030
1031 /*
1032 * Read the next element as a float.
1033 * Returns 0 if size == 0, NEEDS_CHECKING or < 0 on obvious failure.
1034 */
1035 756 static int ebml_read_float(AVIOContext *pb, int size,
1036 double default_value, double *num)
1037 {
1038
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756 if (size == 0) {
1039 *num = default_value;
1040 return 0;
1041
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756 } else if (size == 4) {
1042 86 *num = av_int2float(avio_rb32(pb));
1043
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✗ Branch 1 not taken.
670 } else if (size == 8) {
1044 670 *num = av_int2double(avio_rb64(pb));
1045 } else
1046 return AVERROR_INVALIDDATA;
1047
1048 756 return NEEDS_CHECKING;
1049 }
1050
1051 /*
1052 * Read the next element as an ASCII string.
1053 * 0 is success, < 0 or NEEDS_CHECKING is failure.
1054 */
1055 2382 static int ebml_read_ascii(AVIOContext *pb, int size,
1056 const char *default_value, char **str)
1057 {
1058 char *res;
1059 int ret;
1060
1061
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2382 if (size == 0 && default_value) {
1062 res = av_strdup(default_value);
1063 if (!res)
1064 return AVERROR(ENOMEM);
1065 } else {
1066 /* EBML strings are usually not 0-terminated, so we allocate one
1067 * byte more, read the string and NUL-terminate it ourselves. */
1068
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2382 if (!(res = av_malloc(size + 1)))
1069 return AVERROR(ENOMEM);
1070
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2382 if ((ret = avio_read(pb, (uint8_t *) res, size)) != size) {
1071 av_free(res);
1072 return ret < 0 ? ret : NEEDS_CHECKING;
1073 }
1074 2382 (res)[size] = '\0';
1075 }
1076 2382 av_free(*str);
1077 2382 *str = res;
1078
1079 2382 return 0;
1080 }
1081
1082 /*
1083 * Read the next element as binary data.
1084 * 0 is success, < 0 or NEEDS_CHECKING is failure.
1085 */
1086 31079 static int ebml_read_binary(AVIOContext *pb, int length,
1087 int64_t pos, EbmlBin *bin)
1088 {
1089 int ret;
1090
1091 31079 ret = av_buffer_realloc(&bin->buf, length + AV_INPUT_BUFFER_PADDING_SIZE);
1092
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31079 if (ret < 0)
1093 return ret;
1094 31079 memset(bin->buf->data + length, 0, AV_INPUT_BUFFER_PADDING_SIZE);
1095
1096 31079 bin->data = bin->buf->data;
1097 31079 bin->size = length;
1098 31079 bin->pos = pos;
1099
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31079 if ((ret = avio_read(pb, bin->data, length)) != length) {
1100 10 av_buffer_unref(&bin->buf);
1101 10 bin->data = NULL;
1102 10 bin->size = 0;
1103
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10 return ret < 0 ? ret : NEEDS_CHECKING;
1104 }
1105
1106 31069 return 0;
1107 }
1108
1109 /*
1110 * Read the next element, but only the header. The contents
1111 * are supposed to be sub-elements which can be read separately.
1112 * 0 is success, < 0 is failure.
1113 */
1114 7848 static int ebml_read_master(MatroskaDemuxContext *matroska,
1115 uint64_t length, int64_t pos)
1116 {
1117 MatroskaLevel *level;
1118
1119
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7848 if (matroska->num_levels >= EBML_MAX_DEPTH) {
1120 av_log(matroska->ctx, AV_LOG_ERROR,
1121 "File moves beyond max. allowed depth (%d)\n", EBML_MAX_DEPTH);
1122 return AVERROR(ENOSYS);
1123 }
1124
1125 7848 level = &matroska->levels[matroska->num_levels++];
1126 7848 level->start = pos;
1127 7848 level->length = length;
1128
1129 7848 return 0;
1130 }
1131
1132 /*
1133 * Read a signed "EBML number"
1134 * Return: number of bytes processed, < 0 on error
1135 */
1136 236 static int matroska_ebmlnum_sint(MatroskaDemuxContext *matroska,
1137 AVIOContext *pb, int64_t *num)
1138 {
1139 uint64_t unum;
1140 int res;
1141
1142 /* read as unsigned number first */
1143
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236 if ((res = ebml_read_num(matroska, pb, 8, &unum, 1)) < 0)
1144 return res;
1145
1146 /* make signed (weird way) */
1147 236 *num = unum - ((1LL << (7 * res - 1)) - 1);
1148
1149 236 return res;
1150 }
1151
1152 static int ebml_parse(MatroskaDemuxContext *matroska,
1153 EbmlSyntax *syntax, void *data);
1154
1155 58044 static EbmlSyntax *ebml_parse_id(EbmlSyntax *syntax, uint32_t id)
1156 {
1157 int i;
1158
1159 // Whoever touches this should be aware of the duplication
1160 // existing in matroska_cluster_parsing.
1161
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122676 for (i = 0; syntax[i].id; i++)
1162
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121918 if (id == syntax[i].id)
1163 57286 break;
1164
1165 58044 return &syntax[i];
1166 }
1167
1168 7848 static int ebml_parse_nest(MatroskaDemuxContext *matroska, EbmlSyntax *syntax,
1169 void *data)
1170 {
1171 int res;
1172
1173
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7848 if (data) {
1174
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57759 for (int i = 0; syntax[i].id; i++) {
1175 49911 void *dst = (char *)data + syntax[i].data_offset;
1176
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49911 switch (syntax[i].type) {
1177 21531 case EBML_UINT:
1178 21531 *(uint64_t *)dst = syntax[i].def.u;
1179 21531 break;
1180 968 case EBML_SINT:
1181 968 *(int64_t *) dst = syntax[i].def.i;
1182 968 break;
1183 1441 case EBML_FLOAT:
1184 1441 *(double *) dst = syntax[i].def.f;
1185 1441 break;
1186 4048 case EBML_STR:
1187 case EBML_UTF8:
1188 // the default may be NULL
1189
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4048 if (syntax[i].def.s) {
1190 1267 *(char**)dst = av_strdup(syntax[i].def.s);
1191
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1267 if (!*(char**)dst)
1192 return AVERROR(ENOMEM);
1193 }
1194 4048 break;
1195 }
1196 }
1197
1198
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7848 if (!matroska->levels[matroska->num_levels - 1].length) {
1199 53 matroska->num_levels--;
1200 53 return 0;
1201 }
1202 }
1203
1204 do {
1205 24573 res = ebml_parse(matroska, syntax, data);
1206
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24573 } while (!res);
1207
1208
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7795 return res == LEVEL_ENDED ? 0 : res;
1209 }
1210
1211 2435 static int is_ebml_id_valid(uint32_t id)
1212 {
1213 // Due to endian nonsense in Matroska, the highest byte with any bits set
1214 // will contain the leading length bit. This bit in turn identifies the
1215 // total byte length of the element by its position within the byte.
1216 2435 unsigned int bits = av_log2(id);
1217
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2435 return id && (bits + 7) / 8 == (8 - bits % 8);
1218 }
1219
1220 /*
1221 * Allocate and return the entry for the level1 element with the given ID. If
1222 * an entry already exists, return the existing entry.
1223 */
1224 2435 static MatroskaLevel1Element *matroska_find_level1_elem(MatroskaDemuxContext *matroska,
1225 uint32_t id, int64_t pos)
1226 {
1227 int i;
1228 MatroskaLevel1Element *elem;
1229
1230
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2435 if (!is_ebml_id_valid(id))
1231 return NULL;
1232
1233 // Some files link to all clusters; useless.
1234
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2435 if (id == MATROSKA_ID_CLUSTER)
1235 25 return NULL;
1236
1237 // There can be multiple SeekHeads and Tags.
1238
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6493 for (i = 0; i < matroska->num_level1_elems; i++) {
1239
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✓ Branch 1 taken 4075 times.
4935 if (matroska->level1_elems[i].id == id) {
1240
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✓ Branch 3 taken 8 times.
860 if (matroska->level1_elems[i].pos == pos ||
1241 id != MATROSKA_ID_SEEKHEAD && id != MATROSKA_ID_TAGS)
1242 852 return &matroska->level1_elems[i];
1243 }
1244 }
1245
1246 // Only a completely broken file would have more elements.
1247
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1558 if (matroska->num_level1_elems >= FF_ARRAY_ELEMS(matroska->level1_elems)) {
1248 av_log(matroska->ctx, AV_LOG_ERROR, "Too many level1 elements.\n");
1249 return NULL;
1250 }
1251
1252 1558 elem = &matroska->level1_elems[matroska->num_level1_elems++];
1253 1558 *elem = (MatroskaLevel1Element){.id = id};
1254
1255 1558 return elem;
1256 }
1257
1258 58055 static int ebml_parse(MatroskaDemuxContext *matroska,
1259 EbmlSyntax *syntax, void *data)
1260 {
1261 static const uint64_t max_lengths[EBML_TYPE_COUNT] = {
1262 // Forbid unknown-length EBML_NONE elements.
1263 [EBML_NONE] = EBML_UNKNOWN_LENGTH - 1,
1264 [EBML_UINT] = 8,
1265 [EBML_SINT] = 8,
1266 [EBML_FLOAT] = 8,
1267 // max. 16 MB for strings
1268 [EBML_STR] = 0x1000000,
1269 [EBML_UTF8] = 0x1000000,
1270 // max. 256 MB for binary data
1271 [EBML_BIN] = 0x10000000,
1272 // no limits for anything else
1273 };
1274 58055 AVIOContext *pb = matroska->ctx->pb;
1275 uint32_t id;
1276 uint64_t length;
1277 58055 int64_t pos = avio_tell(pb), pos_alt;
1278 58055 int res, update_pos = 1, level_check;
1279 MatroskaLevel1Element *level1_elem;
1280
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58055 MatroskaLevel *level = matroska->num_levels ? &matroska->levels[matroska->num_levels - 1] : NULL;
1281
1282
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58055 if (!matroska->current_id) {
1283 uint64_t id;
1284 56086 res = ebml_read_num(matroska, pb, 4, &id, 0);
1285
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56086 if (res < 0) {
1286
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14 if (pb->eof_reached && res == AVERROR_EOF) {
1287
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14 if (matroska->is_live)
1288 // in live mode, finish parsing if EOF is reached.
1289 14 return 1;
1290
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10 if (level && pos == avio_tell(pb)) {
1291
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10 if (level->length == EBML_UNKNOWN_LENGTH) {
1292 // Unknown-length levels automatically end at EOF.
1293 10 matroska->num_levels--;
1294 10 return LEVEL_ENDED;
1295 } else {
1296 av_log(matroska->ctx, AV_LOG_ERROR, "File ended prematurely "
1297 "at pos. %"PRIu64" (0x%"PRIx64")\n", pos, pos);
1298 }
1299 }
1300 }
1301 return res;
1302 }
1303 56072 matroska->current_id = id | 1 << 7 * res;
1304 56072 pos_alt = pos + res;
1305 } else {
1306 1969 pos_alt = pos;
1307 1969 pos -= (av_log2(matroska->current_id) + 7) / 8;
1308 }
1309
1310 58041 id = matroska->current_id;
1311
1312 58041 syntax = ebml_parse_id(syntax, id);
1313
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✓ Branch 5 taken 481 times.
58041 if (!syntax->id && id != EBML_ID_VOID && id != EBML_ID_CRC32) {
1314
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44 if (level && level->length == EBML_UNKNOWN_LENGTH) {
1315 // Unknown-length levels end when an element from an upper level
1316 // in the hierarchy is encountered.
1317
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7 while (syntax->def.n) {
1318 3 syntax = ebml_parse_id(syntax->def.n, id);
1319
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✗ Branch 1 not taken.
3 if (syntax->id) {
1320 3 matroska->num_levels--;
1321 3 return LEVEL_ENDED;
1322 }
1323 // We have not encountered a known element; syntax is a sentinel.
1324 av_assert1(syntax->type == EBML_NONE);
1325 };
1326 }
1327
1328 41 av_log(matroska->ctx, AV_LOG_DEBUG, "Unknown entry 0x%"PRIX32" at pos. "
1329 "%"PRId64"\n", id, pos);
1330 41 update_pos = 0; /* Don't update resync_pos as an error might have happened. */
1331 }
1332
1333
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58038 if (data) {
1334 56896 data = (char *) data + syntax->data_offset;
1335
2/2
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56896 if (syntax->list_elem_size) {
1336 3739 EbmlList *list = data;
1337 void *newelem;
1338
1339
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✓ Branch 1 taken 3739 times.
3739 if ((unsigned)list->nb_elem + 1 >= UINT_MAX / syntax->list_elem_size)
1340 return AVERROR(ENOMEM);
1341 3739 newelem = av_fast_realloc(list->elem,
1342 &list->alloc_elem_size,
1343 3739 (list->nb_elem + 1) * syntax->list_elem_size);
1344
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3739 if (!newelem)
1345 return AVERROR(ENOMEM);
1346 3739 list->elem = newelem;
1347 3739 data = (char *) list->elem + list->nb_elem * syntax->list_elem_size;
1348 3739 memset(data, 0, syntax->list_elem_size);
1349 3739 list->nb_elem++;
1350 }
1351 }
1352
1353
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58038 if (syntax->type != EBML_STOP) {
1354 56064 matroska->current_id = 0;
1355
1/2
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✓ Branch 2 taken 56064 times.
56064 if ((res = ebml_read_length(matroska, pb, &length)) < 0)
1356 return res;
1357
1358 56064 pos_alt += res;
1359
1360
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56064 if (matroska->num_levels > 0) {
1361
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✓ Branch 1 taken 6 times.
55320 if (length != EBML_UNKNOWN_LENGTH &&
1362
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110518 level->length != EBML_UNKNOWN_LENGTH) {
1363 55204 uint64_t elem_end = pos_alt + length,
1364 55204 level_end = level->start + level->length;
1365
1366
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55204 if (elem_end < level_end) {
1367 47557 level_check = 0;
1368
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✗ Branch 1 not taken.
7647 } else if (elem_end == level_end) {
1369 7647 level_check = LEVEL_ENDED;
1370 } else {
1371 av_log(matroska->ctx, AV_LOG_ERROR,
1372 "Element at 0x%"PRIx64" ending at 0x%"PRIx64" exceeds "
1373 "containing master element ending at 0x%"PRIx64"\n",
1374 pos, elem_end, level_end);
1375 return AVERROR_INVALIDDATA;
1376 }
1377
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116 } else if (length != EBML_UNKNOWN_LENGTH) {
1378 110 level_check = 0;
1379
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6 } else if (level->length != EBML_UNKNOWN_LENGTH) {
1380 av_log(matroska->ctx, AV_LOG_ERROR, "Unknown-sized element "
1381 "at 0x%"PRIx64" inside parent with finite size\n", pos);
1382 return AVERROR_INVALIDDATA;
1383 } else {
1384 6 level_check = 0;
1385
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6 if (id != MATROSKA_ID_CLUSTER && (syntax->type == EBML_LEVEL1
1386
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2 || syntax->type == EBML_NEST)) {
1387 // According to the current specifications only clusters and
1388 // segments are allowed to be unknown-length. We also accept
1389 // other unknown-length master elements.
1390 av_log(matroska->ctx, AV_LOG_WARNING,
1391 "Found unknown-length element 0x%"PRIX32" other than "
1392 "a cluster at 0x%"PRIx64". Spec-incompliant, but "
1393 "parsing will nevertheless be attempted.\n", id, pos);
1394 update_pos = -1;
1395 }
1396 }
1397 } else
1398 744 level_check = 0;
1399
1400
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✓ Branch 2 taken 2 times.
✓ Branch 3 taken 47884 times.
56064 if (max_lengths[syntax->type] && length > max_lengths[syntax->type]) {
1401
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 2 times.
2 if (length != EBML_UNKNOWN_LENGTH) {
1402 av_log(matroska->ctx, AV_LOG_ERROR,
1403 "Invalid length 0x%"PRIx64" > 0x%"PRIx64" for element "
1404 "with ID 0x%"PRIX32" at 0x%"PRIx64"\n",
1405 length, max_lengths[syntax->type], id, pos);
1406
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 2 times.
2 } else if (syntax->type != EBML_NONE) {
1407 av_log(matroska->ctx, AV_LOG_ERROR,
1408 "Element with ID 0x%"PRIX32" at pos. 0x%"PRIx64" has "
1409 "unknown length, yet the length of an element of its "
1410 "type must be known.\n", id, pos);
1411 } else {
1412 2 av_log(matroska->ctx, AV_LOG_ERROR,
1413 "Found unknown-length element with ID 0x%"PRIX32" at "
1414 "pos. 0x%"PRIx64" for which no syntax for parsing is "
1415 "available.\n", id, pos);
1416 }
1417 2 return AVERROR_INVALIDDATA;
1418 }
1419
1420
2/2
✓ Branch 0 taken 130 times.
✓ Branch 1 taken 55932 times.
56062 if (!(pb->seekable & AVIO_SEEKABLE_NORMAL)) {
1421 // Loosing sync will likely manifest itself as encountering unknown
1422 // elements which are not reliably distinguishable from elements
1423 // belonging to future extensions of the format.
1424 // We use a heuristic to detect such situations: If the current
1425 // element is not expected at the current syntax level and there
1426 // were only a few unknown elements in a row, then the element is
1427 // skipped or considered defective based upon the length of the
1428 // current element (i.e. how much would be skipped); if there were
1429 // more than a few skipped elements in a row and skipping the current
1430 // element would lead us more than SKIP_THRESHOLD away from the last
1431 // known good position, then it is inferred that an error occurred.
1432 // The dependency on the number of unknown elements in a row exists
1433 // because the distance to the last known good position is
1434 // automatically big if the last parsed element was big.
1435 // In both cases, each unknown element is considered equivalent to
1436 // UNKNOWN_EQUIV of skipped bytes for the check.
1437 // The whole check is only done for non-seekable output, because
1438 // in this situation skipped data can't simply be rechecked later.
1439 // This is especially important when using unkown length elements
1440 // as the check for whether a child exceeds its containing master
1441 // element is not effective in this situation.
1442
2/2
✓ Branch 0 taken 128 times.
✓ Branch 1 taken 2 times.
130 if (update_pos) {
1443 128 matroska->unknown_count = 0;
1444 } else {
1445 2 int64_t dist = length + UNKNOWN_EQUIV * matroska->unknown_count++;
1446
1447
1/2
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✓ Branch 1 taken 2 times.
2 if (matroska->unknown_count > 3)
1448 dist += pos_alt - matroska->resync_pos;
1449
1450
1/2
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2 if (dist > SKIP_THRESHOLD) {
1451 av_log(matroska->ctx, AV_LOG_ERROR,
1452 "Unknown element %"PRIX32" at pos. 0x%"PRIx64" with "
1453 "length 0x%"PRIx64" considered as invalid data. Last "
1454 "known good position 0x%"PRIx64", %d unknown elements"
1455 " in a row\n", id, pos, length, matroska->resync_pos,
1456 matroska->unknown_count);
1457 return AVERROR_INVALIDDATA;
1458 }
1459 }
1460 }
1461
1462
2/2
✓ Branch 0 taken 56023 times.
✓ Branch 1 taken 39 times.
56062 if (update_pos > 0) {
1463 // We have found an element that is allowed at this place
1464 // in the hierarchy and it passed all checks, so treat the beginning
1465 // of the element as the "last known good" position.
1466 56023 matroska->resync_pos = pos;
1467 }
1468
1469
3/4
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✓ Branch 1 taken 55725 times.
✓ Branch 2 taken 337 times.
✗ Branch 3 not taken.
56062 if (!data && length != EBML_UNKNOWN_LENGTH)
1470 337 goto skip;
1471 }
1472
1473
8/8
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✓ Branch 1 taken 160 times.
✓ Branch 2 taken 756 times.
✓ Branch 3 taken 2382 times.
✓ Branch 4 taken 31079 times.
✓ Branch 5 taken 7848 times.
✓ Branch 6 taken 1974 times.
✓ Branch 7 taken 2732 times.
57699 switch (syntax->type) {
1474 10768 case EBML_UINT:
1475 10768 res = ebml_read_uint(pb, length, syntax->def.u, data);
1476 10768 break;
1477 160 case EBML_SINT:
1478 160 res = ebml_read_sint(pb, length, syntax->def.i, data);
1479 160 break;
1480 756 case EBML_FLOAT:
1481 756 res = ebml_read_float(pb, length, syntax->def.f, data);
1482 756 break;
1483 2382 case EBML_STR:
1484 case EBML_UTF8:
1485 2382 res = ebml_read_ascii(pb, length, syntax->def.s, data);
1486 2382 break;
1487 31079 case EBML_BIN:
1488 31079 res = ebml_read_binary(pb, length, pos_alt, data);
1489 31079 break;
1490 7848 case EBML_LEVEL1:
1491 case EBML_NEST:
1492
1/2
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✓ Branch 2 taken 7848 times.
7848 if ((res = ebml_read_master(matroska, length, pos_alt)) < 0)
1493 return res;
1494
2/2
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✓ Branch 1 taken 7476 times.
7848 if (id == MATROSKA_ID_SEGMENT)
1495 372 matroska->segment_start = pos_alt;
1496
2/2
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✓ Branch 1 taken 7828 times.
7848 if (id == MATROSKA_ID_CUES)
1497 20 matroska->cues_parsing_deferred = 0;
1498
3/4
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✓ Branch 1 taken 6609 times.
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✗ Branch 3 not taken.
9087 if (syntax->type == EBML_LEVEL1 &&
1499 1239 (level1_elem = matroska_find_level1_elem(matroska, syntax->id, pos))) {
1500
2/2
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✓ Branch 1 taken 22 times.
1239 if (!level1_elem->pos) {
1501 // Zero is not a valid position for a level 1 element.
1502 1217 level1_elem->pos = pos;
1503
1/2
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✓ Branch 1 taken 22 times.
22 } else if (level1_elem->pos != pos)
1504 av_log(matroska->ctx, AV_LOG_ERROR, "Duplicate element\n");
1505 1239 level1_elem->parsed = 1;
1506 }
1507
2/2
✓ Branch 1 taken 1175 times.
✓ Branch 2 taken 6673 times.
7848 if (res = ebml_parse_nest(matroska, syntax->def.n, data))
1508 1175 return res;
1509 6673 break;
1510 1974 case EBML_STOP:
1511 1974 return 1;
1512 337 skip:
1513 3069 default:
1514
2/2
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✓ Branch 1 taken 2 times.
3069 if (length) {
1515 int64_t res2;
1516
1/2
✗ Branch 1 not taken.
✓ Branch 2 taken 3067 times.
3067 if (ffio_limit(pb, length) != length) {
1517 // ffio_limit emits its own error message,
1518 // so we don't have to.
1519 return AVERROR(EIO);
1520 }
1521
1/2
✓ Branch 1 taken 3067 times.
✗ Branch 2 not taken.
3067 if ((res2 = avio_skip(pb, length - 1)) >= 0) {
1522 // avio_skip might take us past EOF. We check for this
1523 // by skipping only length - 1 bytes, reading a byte and
1524 // checking the error flags. This is done in order to check
1525 // that the element has been properly skipped even when
1526 // no filesize (that ffio_limit relies on) is available.
1527 3067 avio_r8(pb);
1528 3067 res = NEEDS_CHECKING;
1529 } else
1530 res = res2;
1531 } else
1532 2 res = 0;
1533 }
1534
2/2
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✓ Branch 1 taken 40126 times.
54887 if (res) {
1535
1/2
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✗ Branch 1 not taken.
14761 if (res == NEEDS_CHECKING) {
1536
2/2
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✓ Branch 1 taken 14751 times.
14761 if (pb->eof_reached) {
1537
1/2
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✓ Branch 1 taken 10 times.
10 if (pb->error)
1538 res = pb->error;
1539 else
1540 10 res = AVERROR_EOF;
1541 } else
1542 14751 goto level_check;
1543 }
1544
1545
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 10 times.
10 if (res == AVERROR_INVALIDDATA)
1546 av_log(matroska->ctx, AV_LOG_ERROR, "Invalid element\n");
1547
1/2
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✓ Branch 1 taken 10 times.
10 else if (res == AVERROR(EIO))
1548 av_log(matroska->ctx, AV_LOG_ERROR, "Read error\n");
1549
1/2
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✗ Branch 1 not taken.
10 else if (res == AVERROR_EOF) {
1550 10 av_log(matroska->ctx, AV_LOG_ERROR, "File ended prematurely\n");
1551 10 res = AVERROR(EIO);
1552 }
1553
1554 10 return res;
1555 }
1556
1557 40126 level_check:
1558
3/4
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✓ Branch 1 taken 54733 times.
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✗ Branch 3 not taken.
54877 if (syntax->is_counted && data) {
1559 144 CountedElement *elem = data;
1560
1/2
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✗ Branch 1 not taken.
144 if (elem->count != UINT_MAX)
1561 144 elem->count++;
1562 }
1563
1564
4/4
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✓ Branch 3 taken 30 times.
54877 if (level_check == LEVEL_ENDED && matroska->num_levels) {
1565 7552 level = &matroska->levels[matroska->num_levels - 1];
1566 7552 pos = avio_tell(pb);
1567
1568 // Given that pos >= level->start no check for
1569 // level->length != EBML_UNKNOWN_LENGTH is necessary.
1570
4/4
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✓ Branch 2 taken 7630 times.
✓ Branch 3 taken 6821 times.
15182 while (matroska->num_levels && pos == level->start + level->length) {
1571 7630 matroska->num_levels--;
1572 7630 level--;
1573 }
1574 }
1575
1576 54877 return level_check;
1577 }
1578
1579 72348 static void ebml_free(EbmlSyntax *syntax, void *data)
1580 {
1581 int i, j;
1582
2/2
✓ Branch 0 taken 299933 times.
✓ Branch 1 taken 72348 times.
372281 for (i = 0; syntax[i].id; i++) {
1583 299933 void *data_off = (char *) data + syntax[i].data_offset;
1584
4/4
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✓ Branch 1 taken 32645 times.
✓ Branch 2 taken 73082 times.
✓ Branch 3 taken 190164 times.
299933 switch (syntax[i].type) {
1585 4042 case EBML_STR:
1586 case EBML_UTF8:
1587 4042 av_freep(data_off);
1588 4042 break;
1589 32645 case EBML_BIN:
1590 32645 av_buffer_unref(&((EbmlBin *) data_off)->buf);
1591 32645 break;
1592 73082 case EBML_LEVEL1:
1593 case EBML_NEST:
1594
2/2
✓ Branch 0 taken 35979 times.
✓ Branch 1 taken 37103 times.
73082 if (syntax[i].list_elem_size) {
1595 35979 EbmlList *list = data_off;
1596 35979 char *ptr = list->elem;
1597
2/2
✓ Branch 0 taken 3739 times.
✓ Branch 1 taken 35979 times.
39718 for (j = 0; j < list->nb_elem;
1598 3739 j++, ptr += syntax[i].list_elem_size)
1599 3739 ebml_free(syntax[i].def.n, ptr);
1600 35979 av_freep(&list->elem);
1601 35979 list->nb_elem = 0;
1602 35979 list->alloc_elem_size = 0;
1603 } else
1604 37103 ebml_free(syntax[i].def.n, data_off);
1605 default:
1606 263246 break;
1607 }
1608 }
1609 72348 }
1610
1611 /*
1612 * Autodetecting...
1613 */
1614 7235 static int matroska_probe(const AVProbeData *p)
1615 {
1616 7235 uint64_t total = 0;
1617 7235 int len_mask = 0x80, size = 1, n = 1, i;
1618
1619 /* EBML header? */
1620
2/2
✓ Branch 0 taken 6885 times.
✓ Branch 1 taken 350 times.
7235 if (AV_RB32(p->buf) != EBML_ID_HEADER)
1621 6885 return 0;
1622
1623 /* length of header */
1624 350 total = p->buf[4];
1625
3/4
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✗ Branch 1 not taken.
✓ Branch 2 taken 1736 times.
✓ Branch 3 taken 350 times.
2086 while (size <= 8 && !(total & len_mask)) {
1626 1736 size++;
1627 1736 len_mask >>= 1;
1628 }
1629
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 350 times.
350 if (size > 8)
1630 return 0;
1631 350 total &= (len_mask - 1);
1632
2/2
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✓ Branch 1 taken 350 times.
2086 while (n < size)
1633 1736 total = (total << 8) | p->buf[4 + n++];
1634
1635
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 350 times.
350 if (total + 1 == 1ULL << (7 * size)){
1636 /* Unknown-length header - simply parse the whole buffer. */
1637 total = p->buf_size - 4 - size;
1638 } else {
1639 /* Does the probe data contain the whole header? */
1640
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 350 times.
350 if (p->buf_size < 4 + size + total)
1641 return 0;
1642 }
1643
1644 /* The header should contain a known document type. For now,
1645 * we don't parse the whole header but simply check for the
1646 * availability of that array of characters inside the header.
1647 * Not fully fool-proof, but good enough. */
1648
1/2
✓ Branch 0 taken 601 times.
✗ Branch 1 not taken.
601 for (i = 0; i < FF_ARRAY_ELEMS(matroska_doctypes); i++) {
1649 601 size_t probelen = strlen(matroska_doctypes[i]);
1650
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 601 times.
601 if (total < probelen)
1651 continue;
1652
2/2
✓ Branch 0 taken 12982 times.
✓ Branch 1 taken 251 times.
13233 for (n = 4 + size; n <= 4 + size + total - probelen; n++)
1653
2/2
✓ Branch 0 taken 350 times.
✓ Branch 1 taken 12632 times.
12982 if (!memcmp(p->buf + n, matroska_doctypes[i], probelen))
1654 350 return AVPROBE_SCORE_MAX;
1655 }
1656
1657 // probably valid EBML header but no recognized doctype
1658 return AVPROBE_SCORE_EXTENSION;
1659 }
1660
1661 31403 static MatroskaTrack *matroska_find_track_by_num(MatroskaDemuxContext *matroska,
1662 uint64_t num)
1663 {
1664 31403 MatroskaTrack *tracks = matroska->tracks.elem;
1665 int i;
1666
1667
2/2
✓ Branch 0 taken 34523 times.
✓ Branch 1 taken 1 times.
34524 for (i = 0; i < matroska->tracks.nb_elem; i++)
1668
2/2
✓ Branch 0 taken 31402 times.
✓ Branch 1 taken 3121 times.
34523 if (tracks[i].num == num)
1669 31402 return &tracks[i];
1670
1671 1 av_log(matroska->ctx, AV_LOG_ERROR, "Invalid track number %"PRIu64"\n", num);
1672 1 return NULL;
1673 }
1674
1675 82 static int matroska_decode_buffer(uint8_t **buf, int *buf_size,
1676 MatroskaTrack *track)
1677 {
1678 82 MatroskaTrackEncoding *encodings = track->encodings.elem;
1679 82 uint8_t *data = *buf;
1680 82 int isize = *buf_size;
1681 82 uint8_t *pkt_data = NULL;
1682 uint8_t av_unused *newpktdata;
1683 82 int pkt_size = isize;
1684 82 int result = 0;
1685 int olen;
1686
1687
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 82 times.
82 if (pkt_size >= 10000000U)
1688 return AVERROR_INVALIDDATA;
1689
1690
4/5
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✓ 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) {
1691 70 case MATROSKA_TRACK_ENCODING_COMP_HEADERSTRIP:
1692 {
1693 70 int header_size = encodings[0].compression.settings.size;
1694 70 uint8_t *header = encodings[0].compression.settings.data;
1695
1696
2/4
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✗ Branch 1 not taken.
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✓ Branch 3 taken 70 times.
70 if (header_size && !header) {
1697 av_log(NULL, AV_LOG_ERROR, "Compression size but no data in headerstrip\n");
1698 return -1;
1699 }
1700
1701
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 70 times.
70 if (!header_size)
1702 return 0;
1703
1704 70 pkt_size = isize + header_size;
1705 70 pkt_data = av_malloc(pkt_size + AV_INPUT_BUFFER_PADDING_SIZE);
1706
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 70 times.
70 if (!pkt_data)
1707 return AVERROR(ENOMEM);
1708
1709 70 memcpy(pkt_data, header, header_size);
1710 70 memcpy(pkt_data + header_size, data, isize);
1711 70 break;
1712 }
1713 15 case MATROSKA_TRACK_ENCODING_COMP_LZO:
1714 do {
1715 15 int insize = isize;
1716 15 olen = pkt_size *= 3;
1717 15 newpktdata = av_realloc(pkt_data, pkt_size + AV_LZO_OUTPUT_PADDING
1718 15 + AV_INPUT_BUFFER_PADDING_SIZE);
1719
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 15 times.
15 if (!newpktdata) {
1720 result = AVERROR(ENOMEM);
1721 goto failed;
1722 }
1723 15 pkt_data = newpktdata;
1724 15 result = av_lzo1x_decode(pkt_data, &olen, data, &insize);
1725
3/4
✓ Branch 0 taken 11 times.
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✓ Branch 2 taken 11 times.
✗ Branch 3 not taken.
15 } while (result == AV_LZO_OUTPUT_FULL && pkt_size < 10000000);
1726
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 4 times.
4 if (result) {
1727 result = AVERROR_INVALIDDATA;
1728 goto failed;
1729 }
1730 4 pkt_size -= olen;
1731 4 break;
1732 #if CONFIG_ZLIB
1733 6 case MATROSKA_TRACK_ENCODING_COMP_ZLIB:
1734 {
1735 6 z_stream zstream = { 0 };
1736
2/4
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✗ Branch 1 not taken.
✗ Branch 3 not taken.
✓ Branch 4 taken 6 times.
6 if (!pkt_size || inflateInit(&zstream) != Z_OK)
1737 return -1;
1738 6 zstream.next_in = data;
1739 6 zstream.avail_in = isize;
1740 do {
1741 8 pkt_size *= 3;
1742 8 newpktdata = av_realloc(pkt_data, pkt_size + AV_INPUT_BUFFER_PADDING_SIZE);
1743
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 8 times.
8 if (!newpktdata) {
1744 inflateEnd(&zstream);
1745 result = AVERROR(ENOMEM);
1746 goto failed;
1747 }
1748 8 pkt_data = newpktdata;
1749 8 zstream.avail_out = pkt_size - zstream.total_out;
1750 8 zstream.next_out = pkt_data + zstream.total_out;
1751 8 result = inflate(&zstream, Z_NO_FLUSH);
1752
3/4
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✓ Branch 1 taken 6 times.
✓ Branch 2 taken 2 times.
✗ Branch 3 not taken.
8 } while (result == Z_OK && pkt_size < 10000000);
1753 6 pkt_size = zstream.total_out;
1754 6 inflateEnd(&zstream);
1755
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 6 times.
6 if (result != Z_STREAM_END) {
1756 if (result == Z_MEM_ERROR)
1757 result = AVERROR(ENOMEM);
1758 else
1759 result = AVERROR_INVALIDDATA;
1760 goto failed;
1761 }
1762 6 break;
1763 }
1764 #endif
1765 #if CONFIG_BZLIB
1766 2 case MATROSKA_TRACK_ENCODING_COMP_BZLIB:
1767 {
1768 2 bz_stream bzstream = { 0 };
1769
2/4
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✗ Branch 1 not taken.
✗ Branch 3 not taken.
✓ Branch 4 taken 2 times.
2 if (!pkt_size || BZ2_bzDecompressInit(&bzstream, 0, 0) != BZ_OK)
1770 return -1;
1771 2 bzstream.next_in = data;
1772 2 bzstream.avail_in = isize;
1773 do {
1774 6 pkt_size *= 3;
1775 6 newpktdata = av_realloc(pkt_data, pkt_size + AV_INPUT_BUFFER_PADDING_SIZE);
1776
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 6 times.
6 if (!newpktdata) {
1777 BZ2_bzDecompressEnd(&bzstream);
1778 result = AVERROR(ENOMEM);
1779 goto failed;
1780 }
1781 6 pkt_data = newpktdata;
1782 6 bzstream.avail_out = pkt_size - bzstream.total_out_lo32;
1783 6 bzstream.next_out = pkt_data + bzstream.total_out_lo32;
1784 6 result = BZ2_bzDecompress(&bzstream);
1785
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);
1786 2 pkt_size = bzstream.total_out_lo32;
1787 2 BZ2_bzDecompressEnd(&bzstream);
1788
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 2 times.
2 if (result != BZ_STREAM_END) {
1789 if (result == BZ_MEM_ERROR)
1790 result = AVERROR(ENOMEM);
1791 else
1792 result = AVERROR_INVALIDDATA;
1793 goto failed;
1794 }
1795 2 break;
1796 }
1797 #endif
1798 default:
1799 return AVERROR_INVALIDDATA;
1800 }
1801
1802 82 memset(pkt_data + pkt_size, 0, AV_INPUT_BUFFER_PADDING_SIZE);
1803
1804 82 *buf = pkt_data;
1805 82 *buf_size = pkt_size;
1806 82 return 0;
1807
1808 failed:
1809 av_free(pkt_data);
1810 return result;
1811 }
1812
1813 209 static void matroska_convert_tag(AVFormatContext *s, EbmlList *list,
1814 AVDictionary **metadata, char *prefix)
1815 {
1816 209 MatroskaTag *tags = list->elem;
1817 char key[1024];
1818 int i;
1819
1820
2/2
✓ Branch 0 taken 448 times.
✓ Branch 1 taken 209 times.
657 for (i = 0; i < list->nb_elem; i++) {
1821 1344 const char *lang = tags[i].lang &&
1822
3/4
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✗ Branch 1 not taken.
✓ Branch 2 taken 45 times.
✓ Branch 3 taken 403 times.
448 strcmp(tags[i].lang, "und") ? tags[i].lang : NULL;
1823
1824
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 448 times.
448 if (!tags[i].name) {
1825 av_log(s, AV_LOG_WARNING, "Skipping invalid tag with no TagName.\n");
1826 continue;
1827 }
1828
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 448 times.
448 if (prefix)
1829 snprintf(key, sizeof(key), "%s/%s", prefix, tags[i].name);
1830 else
1831 448 av_strlcpy(key, tags[i].name, sizeof(key));
1832
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448 if (tags[i].def || !lang) {
1833 403 av_dict_set(metadata, key, tags[i].string, 0);
1834
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403 if (tags[i].sub.nb_elem)
1835 matroska_convert_tag(s, &tags[i].sub, metadata, key);
1836 }
1837
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448 if (lang) {
1838 45 av_strlcat(key, "-", sizeof(key));
1839 45 av_strlcat(key, lang, sizeof(key));
1840 45 av_dict_set(metadata, key, tags[i].string, 0);
1841
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45 if (tags[i].sub.nb_elem)
1842 matroska_convert_tag(s, &tags[i].sub, metadata, key);
1843 }
1844 }
1845 209 ff_metadata_conv(metadata, NULL, ff_mkv_metadata_conv);
1846 209 }
1847
1848 372 static void matroska_convert_tags(AVFormatContext *s)
1849 {
1850 372 MatroskaDemuxContext *matroska = s->priv_data;
1851 372 MatroskaTags *tags = matroska->tags.elem;
1852 int i, j;
1853
1854
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581 for (i = 0; i < matroska->tags.nb_elem; i++) {
1855
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209 if (tags[i].target.attachuid) {
1856 3 MatroskaAttachment *attachment = matroska->attachments.elem;
1857 3 int found = 0;
1858
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6 for (j = 0; j < matroska->attachments.nb_elem; j++) {
1859
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3 if (attachment[j].uid == tags[i].target.attachuid &&
1860
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3 attachment[j].stream) {
1861 3 matroska_convert_tag(s, &tags[i].tag,
1862 3 &attachment[j].stream->metadata, NULL);
1863 3 found = 1;
1864 }
1865 }
1866
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3 if (!found) {
1867 av_log(s, AV_LOG_WARNING,
1868 "The tags at index %d refer to a "
1869 "non-existent attachment %"PRId64".\n",
1870 i, tags[i].target.attachuid);
1871 }
1872
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206 } else if (tags[i].target.chapteruid) {
1873 3 MatroskaChapter *chapter = matroska->chapters.elem;
1874 3 int found = 0;
1875
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9 for (j = 0; j < matroska->chapters.nb_elem; j++) {
1876
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6 if (chapter[j].uid == tags[i].target.chapteruid &&
1877
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3 chapter[j].chapter) {
1878 3 matroska_convert_tag(s, &tags[i].tag,
1879 3 &chapter[j].chapter->metadata, NULL);
1880 3 found = 1;
1881 }
1882 }
1883
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3 if (!found) {
1884 av_log(s, AV_LOG_WARNING,
1885 "The tags at index %d refer to a non-existent chapter "
1886 "%"PRId64".\n",
1887 i, tags[i].target.chapteruid);
1888 }
1889
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203 } else if (tags[i].target.trackuid) {
1890 150 MatroskaTrack *track = matroska->tracks.elem;
1891 150 int found = 0;
1892
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548 for (j = 0; j < matroska->tracks.nb_elem; j++) {
1893
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398 if (track[j].uid == tags[i].target.trackuid &&
1894
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150 track[j].stream) {
1895 150 matroska_convert_tag(s, &tags[i].tag,
1896 150 &track[j].stream->metadata, NULL);
1897 150 found = 1;
1898 }
1899 }
1900
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150 if (!found) {
1901 av_log(s, AV_LOG_WARNING,
1902 "The tags at index %d refer to a non-existent track "
1903 "%"PRId64".\n",
1904 i, tags[i].target.trackuid);
1905 }
1906 } else {
1907 53 matroska_convert_tag(s, &tags[i].tag, &s->metadata,
1908 53 tags[i].target.type);
1909 }
1910 }
1911 372 }
1912
1913 24 static int matroska_parse_seekhead_entry(MatroskaDemuxContext *matroska,
1914 int64_t pos)
1915 {
1916 24 uint32_t saved_id = matroska->current_id;
1917 24 int64_t before_pos = avio_tell(matroska->ctx->pb);
1918 24 int ret = 0;
1919 int ret2;
1920
1921 /* seek */
1922
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24 if (avio_seek(matroska->ctx->pb, pos, SEEK_SET) == pos) {
1923 /* We don't want to lose our seekhead level, so we add
1924 * a dummy. This is a crude hack. */
1925
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24 if (matroska->num_levels == EBML_MAX_DEPTH) {
1926 av_log(matroska->ctx, AV_LOG_INFO,
1927 "Max EBML element depth (%d) reached, "
1928 "cannot parse further.\n", EBML_MAX_DEPTH);
1929 ret = AVERROR_INVALIDDATA;
1930 } else {
1931 24 matroska->levels[matroska->num_levels] = (MatroskaLevel) { 0, EBML_UNKNOWN_LENGTH };
1932 24 matroska->num_levels++;
1933 24 matroska->current_id = 0;
1934
1935 24 ret = ebml_parse(matroska, matroska_segment, matroska);
1936
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24 if (ret == LEVEL_ENDED) {
1937 /* This can only happen if the seek brought us beyond EOF. */
1938 2 ret = AVERROR_EOF;
1939 }
1940 }
1941 }
1942 /* Seek back - notice that in all instances where this is used
1943 * it is safe to set the level to 1. */
1944 24 ret2 = matroska_reset_status(matroska, saved_id, before_pos);
1945
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24 if (ret >= 0)
1946 22 ret = ret2;
1947
1948 24 return ret;
1949 }
1950
1951 372 static void matroska_execute_seekhead(MatroskaDemuxContext *matroska)
1952 {
1953 372 EbmlList *seekhead_list = &matroska->seekhead;
1954 int i;
1955
1956 // we should not do any seeking in the streaming case
1957
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372 if (!(matroska->ctx->pb->seekable & AVIO_SEEKABLE_NORMAL))
1958 1 return;
1959
1960
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1566 for (i = 0; i < seekhead_list->nb_elem; i++) {
1961 1196 MatroskaSeekhead *seekheads = seekhead_list->elem;
1962 1196 uint32_t id = seekheads[i].id;
1963 1196 int64_t pos = seekheads[i].pos + matroska->segment_start;
1964 MatroskaLevel1Element *elem;
1965
1966
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1196 if (id != seekheads[i].id || pos < matroska->segment_start)
1967 continue;
1968
1969 1196 elem = matroska_find_level1_elem(matroska, id, pos);
1970
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1196 if (!elem || elem->parsed)
1971 855 continue;
1972
1973 341 elem->pos = pos;
1974
1975 // defer cues parsing until we actually need cue data.
1976
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341 if (id == MATROSKA_ID_CUES)
1977 329 continue;
1978
1979
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12 if (matroska_parse_seekhead_entry(matroska, pos) < 0) {
1980 // mark index as broken
1981 1 matroska->cues_parsing_deferred = -1;
1982 1 break;
1983 }
1984
1985 11 elem->parsed = 1;
1986 }
1987 }
1988
1989 385 static void matroska_add_index_entries(MatroskaDemuxContext *matroska)
1990 {
1991 EbmlList *index_list;
1992 MatroskaIndex *index;
1993 385 uint64_t index_scale = 1;
1994 int i, j;
1995
1996
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385 if (matroska->ctx->flags & AVFMT_FLAG_IGNIDX)
1997 return;
1998
1999 385 index_list = &matroska->index;
2000 385 index = index_list->elem;
2001
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385 if (index_list->nb_elem < 2)
2002 367 return;
2003
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18 if (index[1].time > 1E14 / matroska->time_scale) {
2004 av_log(matroska->ctx, AV_LOG_WARNING, "Dropping apparently-broken index.\n");
2005 return;
2006 }
2007
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556 for (i = 0; i < index_list->nb_elem; i++) {
2008 538 EbmlList *pos_list = &index[i].pos;
2009 538 MatroskaIndexPos *pos = pos_list->elem;
2010
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1194 for (j = 0; j < pos_list->nb_elem; j++) {
2011 656 MatroskaTrack *track = matroska_find_track_by_num(matroska,
2012 656 pos[j].track);
2013
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656 if (track && track->stream)
2014 656 av_add_index_entry(track->stream,
2015 656 pos[j].pos + matroska->segment_start,
2016 656 index[i].time / index_scale, 0, 0,
2017 AVINDEX_KEYFRAME);
2018 }
2019 }
2020 }
2021
2022 13 static void matroska_parse_cues(MatroskaDemuxContext *matroska) {
2023 int i;
2024
2025
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13 if (matroska->ctx->flags & AVFMT_FLAG_IGNIDX)
2026 return;
2027
2028
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54 for (i = 0; i < matroska->num_level1_elems; i++) {
2029 53 MatroskaLevel1Element *elem = &matroska->level1_elems[i];
2030
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53 if (elem->id == MATROSKA_ID_CUES && !elem->parsed) {
2031
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12 if (matroska_parse_seekhead_entry(matroska, elem->pos) < 0)
2032 1 matroska->cues_parsing_deferred = -1;
2033 12 elem->parsed = 1;
2034 12 break;
2035 }
2036 }
2037
2038 13 matroska_add_index_entries(matroska);
2039 }
2040
2041 447 static int matroska_parse_content_encodings(MatroskaTrackEncoding *encodings,
2042 unsigned nb_encodings,
2043 MatroskaTrack *track,
2044 char **key_id_base64, void *logctx)
2045 {
2046
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447 if (nb_encodings > 1) {
2047 av_log(logctx, AV_LOG_ERROR,
2048 "Multiple combined encodings not supported\n");
2049 return 0;
2050 }
2051
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447 if (!nb_encodings)
2052 435 return 0;
2053
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12 if (encodings->type) {
2054 if (encodings->encryption.key_id.size > 0) {
2055 /* Save the encryption key id to be stored later
2056 * as a metadata tag. */
2057 const int b64_size = AV_BASE64_SIZE(encodings->encryption.key_id.size);
2058 *key_id_base64 = av_malloc(b64_size);
2059 if (!*key_id_base64)
2060 return AVERROR(ENOMEM);
2061
2062 av_base64_encode(*key_id_base64, b64_size,
2063 encodings->encryption.key_id.data,
2064 encodings->encryption.key_id.size);
2065 } else {
2066 encodings->scope = 0;
2067 av_log(logctx, AV_LOG_ERROR, "Unsupported encoding type\n");
2068 }
2069 12 } else if (
2070 #if CONFIG_ZLIB
2071
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12 encodings->compression.algo != MATROSKA_TRACK_ENCODING_COMP_ZLIB &&
2072 #endif
2073 #if CONFIG_BZLIB
2074
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9 encodings->compression.algo != MATROSKA_TRACK_ENCODING_COMP_BZLIB &&
2075 #endif
2076
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8 encodings->compression.algo != MATROSKA_TRACK_ENCODING_COMP_LZO &&
2077
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7 encodings->compression.algo != MATROSKA_TRACK_ENCODING_COMP_HEADERSTRIP) {
2078 encodings->scope = 0;
2079 av_log(logctx, AV_LOG_ERROR, "Unsupported encoding type\n");
2080
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12 } else if (track->codec_priv.size && encodings[0].scope & 2) {
2081 1 uint8_t *codec_priv = track->codec_priv.data;
2082 1 int ret = matroska_decode_buffer(&track->codec_priv.data,
2083 &track->codec_priv.size,
2084 track);
2085
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1 if (ret < 0) {
2086 track->codec_priv.data = NULL;
2087 track->codec_priv.size = 0;
2088 av_log(logctx, AV_LOG_ERROR,
2089 "Failed to decode codec private data\n");
2090 }
2091
2092
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1 if (codec_priv != track->codec_priv.data) {
2093 1 av_buffer_unref(&track->codec_priv.buf);
2094
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1 if (track->codec_priv.data) {
2095 2 track->codec_priv.buf = av_buffer_create(track->codec_priv.data,
2096 1 track->codec_priv.size + AV_INPUT_BUFFER_PADDING_SIZE,
2097 NULL, NULL, 0);
2098
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1 if (!track->codec_priv.buf) {
2099 av_freep(&track->codec_priv.data);
2100 track->codec_priv.size = 0;
2101 return AVERROR(ENOMEM);
2102 }
2103 }
2104 }
2105 }
2106 36 track->needs_decoding = !encodings->type &&
2107
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24 encodings->scope & 1 &&
2108
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12 (encodings->compression.algo !=
2109 7 MATROSKA_TRACK_ENCODING_COMP_HEADERSTRIP ||
2110
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7 encodings->compression.settings.size);
2111
2112 12 return 0;
2113 }
2114
2115 static int matroska_aac_profile(char *codec_id)
2116 {
2117 static const char *const aac_profiles[] = { "MAIN", "LC", "SSR" };
2118 int profile;
2119
2120 for (profile = 0; profile < FF_ARRAY_ELEMS(aac_profiles); profile++)
2121 if (strstr(codec_id, aac_profiles[profile]))
2122 break;
2123 return profile + 1;
2124 }
2125
2126 static int matroska_aac_sri(int samplerate)
2127 {
2128 int sri;
2129
2130 for (sri = 0; sri < FF_ARRAY_ELEMS(ff_mpeg4audio_sample_rates); sri++)
2131 if (ff_mpeg4audio_sample_rates[sri] == samplerate)
2132 break;
2133 return sri;
2134 }
2135
2136 18 static void matroska_metadata_creation_time(AVDictionary **metadata, int64_t date_utc)
2137 {
2138 /* Convert to seconds and adjust by number of seconds between 2001-01-01 and Epoch */
2139 18 ff_dict_set_timestamp(metadata, "creation_time", date_utc / 1000 + 978307200000000LL);
2140 18 }
2141
2142 9 static int matroska_parse_flac(AVFormatContext *s,
2143 MatroskaTrack *track,
2144 int *offset)
2145 {
2146 9 AVStream *st = track->stream;
2147 9 uint8_t *p = track->codec_priv.data;
2148 9 int size = track->codec_priv.size;
2149
2150
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9 if (size < 8 + FLAC_STREAMINFO_SIZE || p[4] & 0x7f) {
2151 av_log(s, AV_LOG_WARNING, "Invalid FLAC private data\n");
2152 track->codec_priv.size = 0;
2153 return 0;
2154 }
2155 9 *offset = 8;
2156 9 track->codec_priv.size = 8 + FLAC_STREAMINFO_SIZE;
2157
2158 9 p += track->codec_priv.size;
2159 9 size -= track->codec_priv.size;
2160
2161 /* parse the remaining metadata blocks if present */
2162
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17 while (size >= 4) {
2163 int block_last, block_type, block_size;
2164
2165 8 flac_parse_block_header(p, &block_last, &block_type, &block_size);
2166
2167 8 p += 4;
2168 8 size -= 4;
2169
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8 if (block_size > size)
2170 return 0;
2171
2172 /* check for the channel mask */
2173
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8 if (block_type == FLAC_METADATA_TYPE_VORBIS_COMMENT) {
2174 8 AVDictionary *dict = NULL;
2175 AVDictionaryEntry *chmask;
2176
2177 8 ff_vorbis_comment(s, &dict, p, block_size, 0);
2178 8 chmask = av_dict_get(dict, "WAVEFORMATEXTENSIBLE_CHANNEL_MASK", NULL, 0);
2179
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8 if (chmask) {
2180 8 uint64_t mask = strtol(chmask->value, NULL, 0);
2181
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8 if (!mask || mask & ~0x3ffffULL) {
2182 av_log(s, AV_LOG_WARNING,
2183 "Invalid value of WAVEFORMATEXTENSIBLE_CHANNEL_MASK\n");
2184 } else
2185 8 av_channel_layout_from_mask(&st->codecpar->ch_layout, mask);
2186 }
2187 8 av_dict_free(&dict);
2188 }
2189
2190 8 p += block_size;
2191 8 size -= block_size;
2192 }
2193
2194 9 return 0;
2195 }
2196
2197 7 static int mkv_field_order(const MatroskaDemuxContext *matroska, uint64_t field_order)
2198 {
2199 7 int minor, micro, bttb = 0;
2200
2201 /* workaround a bug in our Matroska muxer, introduced in version 57.36 alongside
2202 * this function, and fixed in 57.52 */
2203
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7 if (matroska->muxingapp && sscanf(matroska->muxingapp, "Lavf57.%d.%d", &minor, &micro) == 2)
2204 bttb = (minor >= 36 && minor <= 51 && micro >= 100);
2205
2206
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7 switch (field_order) {
2207 case MATROSKA_VIDEO_FIELDORDER_PROGRESSIVE:
2208 return AV_FIELD_PROGRESSIVE;
2209 case MATROSKA_VIDEO_FIELDORDER_UNDETERMINED:
2210 return AV_FIELD_UNKNOWN;
2211 6 case MATROSKA_VIDEO_FIELDORDER_TT:
2212 6 return AV_FIELD_TT;
2213 1 case MATROSKA_VIDEO_FIELDORDER_BB:
2214 1 return AV_FIELD_BB;
2215 case MATROSKA_VIDEO_FIELDORDER_BT:
2216 return bttb ? AV_FIELD_TB : AV_FIELD_BT;
2217 case MATROSKA_VIDEO_FIELDORDER_TB:
2218 return bttb ? AV_FIELD_BT : AV_FIELD_TB;
2219 default:
2220 return AV_FIELD_UNKNOWN;
2221 }
2222 }
2223
2224 12 static void mkv_stereo_mode_display_mul(int stereo_mode,
2225 int *h_width, int *h_height)
2226 {
2227
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12 switch (stereo_mode) {
2228 case MATROSKA_VIDEO_STEREOMODE_TYPE_MONO:
2229 case MATROSKA_VIDEO_STEREOMODE_TYPE_CHECKERBOARD_RL:
2230 case MATROSKA_VIDEO_STEREOMODE_TYPE_CHECKERBOARD_LR:
2231 case MATROSKA_VIDEO_STEREOMODE_TYPE_BOTH_EYES_BLOCK_RL:
2232 case MATROSKA_VIDEO_STEREOMODE_TYPE_BOTH_EYES_BLOCK_LR:
2233 break;
2234 4 case MATROSKA_VIDEO_STEREOMODE_TYPE_RIGHT_LEFT:
2235 case MATROSKA_VIDEO_STEREOMODE_TYPE_LEFT_RIGHT:
2236 case MATROSKA_VIDEO_STEREOMODE_TYPE_COL_INTERLEAVED_RL:
2237 case MATROSKA_VIDEO_STEREOMODE_TYPE_COL_INTERLEAVED_LR:
2238 4 *h_width = 2;
2239 4 break;
2240 4 case MATROSKA_VIDEO_STEREOMODE_TYPE_BOTTOM_TOP:
2241 case MATROSKA_VIDEO_STEREOMODE_TYPE_TOP_BOTTOM:
2242 case MATROSKA_VIDEO_STEREOMODE_TYPE_ROW_INTERLEAVED_RL:
2243 case MATROSKA_VIDEO_STEREOMODE_TYPE_ROW_INTERLEAVED_LR:
2244 4 *h_height = 2;
2245 4 break;
2246 }
2247 12 }
2248
2249 236 static int mkv_stereo3d_conv(AVStream *st, MatroskaVideoStereoModeType stereo_mode)
2250 {
2251 static const struct {
2252 char type;
2253 char flags;
2254 } stereo_mode_conv [] = {
2255 #define STEREO_MODE_CONV(STEREOMODETYPE, STEREO3DTYPE, FLAGS, WDIV, HDIV, WEBM) \
2256 [(STEREOMODETYPE)] = { .type = (STEREO3DTYPE), .flags = (FLAGS) },
2257 #define NOTHING(STEREOMODETYPE, WDIV, HDIV, WEBM)
2258 STEREOMODE_STEREO3D_MAPPING(STEREO_MODE_CONV, NOTHING)
2259 };
2260 AVStereo3D *stereo;
2261 size_t size;
2262
2263 236 stereo = av_stereo3d_alloc_size(&size);
2264
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236 if (!stereo)
2265 return AVERROR(ENOMEM);
2266
2267 236 stereo->type = stereo_mode_conv[stereo_mode].type;
2268 236 stereo->flags = stereo_mode_conv[stereo_mode].flags;
2269
2270
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236 if (!av_packet_side_data_add(&st->codecpar->coded_side_data, &st->codecpar->nb_coded_side_data,
2271 AV_PKT_DATA_STEREO3D, stereo, size, 0)) {
2272 av_freep(&stereo);
2273 return AVERROR(ENOMEM);
2274 }
2275
2276 236 return 0;
2277 }
2278
2279 339 static int mkv_parse_video_color(AVStream *st, const MatroskaTrack *track) {
2280 339 const MatroskaTrackVideoColor *color = track->video.color.elem;
2281 const MatroskaMasteringMeta *mastering_meta;
2282 int has_mastering_primaries, has_mastering_luminance;
2283
2284
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339 if (!track->video.color.nb_elem)
2285 275 return 0;
2286
2287 64 mastering_meta = &color->mastering_meta;
2288 // Mastering primaries are CIE 1931 coords, and must be > 0.
2289 64 has_mastering_primaries =
2290
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7 mastering_meta->r_x > 0 && mastering_meta->r_y > 0 &&
2291
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7 mastering_meta->g_x > 0 && mastering_meta->g_y > 0 &&
2292
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7 mastering_meta->b_x > 0 && mastering_meta->b_y > 0 &&
2293
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71 mastering_meta->white_x > 0 && mastering_meta->white_y > 0;
2294 128 has_mastering_luminance = mastering_meta->max_luminance >
2295 71 mastering_meta->min_luminance.el.f &&
2296
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71 mastering_meta->min_luminance.el.f >= 0 &&
2297
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7 mastering_meta->min_luminance.count;
2298
2299
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64 if (color->matrix_coefficients != AVCOL_SPC_RESERVED)
2300 64 st->codecpar->color_space = color->matrix_coefficients;
2301
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64 if (color->primaries != AVCOL_PRI_RESERVED &&
2302
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64 color->primaries != AVCOL_PRI_RESERVED0)
2303 62 st->codecpar->color_primaries = color->primaries;
2304
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64 if (color->transfer_characteristics != AVCOL_TRC_RESERVED &&
2305
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64 color->transfer_characteristics != AVCOL_TRC_RESERVED0)
2306 62 st->codecpar->color_trc = color->transfer_characteristics;
2307
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64 if (color->range != AVCOL_RANGE_UNSPECIFIED &&
2308
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44 color->range <= AVCOL_RANGE_JPEG)
2309 44 st->codecpar->color_range = color->range;
2310
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64 if (color->chroma_siting_horz != MATROSKA_COLOUR_CHROMASITINGHORZ_UNDETERMINED &&
2311
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43 color->chroma_siting_vert != MATROSKA_COLOUR_CHROMASITINGVERT_UNDETERMINED &&
2312
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43 color->chroma_siting_horz < MATROSKA_COLOUR_CHROMASITINGHORZ_NB &&
2313
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43 color->chroma_siting_vert < MATROSKA_COLOUR_CHROMASITINGVERT_NB) {
2314 43 st->codecpar->chroma_location =
2315 43 av_chroma_location_pos_to_enum((color->chroma_siting_horz - 1) << 7,
2316 43 (color->chroma_siting_vert - 1) << 7);
2317 }
2318
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64 if (color->max_cll && color->max_fall) {
2319 7 size_t size = 0;
2320 7 AVContentLightMetadata *metadata = av_content_light_metadata_alloc(&size);
2321
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7 if (!metadata)
2322 return AVERROR(ENOMEM);
2323
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7 if (!av_packet_side_data_add(&st->codecpar->coded_side_data, &st->codecpar->nb_coded_side_data,
2324 AV_PKT_DATA_CONTENT_LIGHT_LEVEL, metadata, size, 0)) {
2325 av_freep(&metadata);
2326 return AVERROR(ENOMEM);
2327 }
2328 7 metadata->MaxCLL = color->max_cll;
2329 7 metadata->MaxFALL = color->max_fall;
2330 }
2331
2332
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64 if (has_mastering_primaries || has_mastering_luminance) {
2333 7 size_t size = 0;
2334 7 AVMasteringDisplayMetadata *metadata = av_mastering_display_metadata_alloc_size(&size);
2335
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7 if (!metadata)
2336 return AVERROR(ENOMEM);
2337
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7 if (!av_packet_side_data_add(&st->codecpar->coded_side_data, &st->codecpar->nb_coded_side_data,
2338 AV_PKT_DATA_MASTERING_DISPLAY_METADATA, metadata, size, 0)) {
2339 av_freep(&metadata);
2340 return AVERROR(ENOMEM);
2341 }
2342
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7 if (has_mastering_primaries) {
2343 7 metadata->display_primaries[0][0] = av_d2q(mastering_meta->r_x, INT_MAX);
2344 7 metadata->display_primaries[0][1] = av_d2q(mastering_meta->r_y, INT_MAX);
2345 7 metadata->display_primaries[1][0] = av_d2q(mastering_meta->g_x, INT_MAX);
2346 7 metadata->display_primaries[1][1] = av_d2q(mastering_meta->g_y, INT_MAX);
2347 7 metadata->display_primaries[2][0] = av_d2q(mastering_meta->b_x, INT_MAX);
2348 7 metadata->display_primaries[2][1] = av_d2q(mastering_meta->b_y, INT_MAX);
2349 7 metadata->white_point[0] = av_d2q(mastering_meta->white_x, INT_MAX);
2350 7 metadata->white_point[1] = av_d2q(mastering_meta->white_y, INT_MAX);
2351 7 metadata->has_primaries = 1;
2352 }
2353
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7 if (has_mastering_luminance) {
2354 7 metadata->max_luminance = av_d2q(mastering_meta->max_luminance, INT_MAX);
2355 7 metadata->min_luminance = av_d2q(mastering_meta->min_luminance.el.f, INT_MAX);
2356 7 metadata->has_luminance = 1;
2357 }
2358 }
2359 64 return 0;
2360 }
2361
2362 333 static int mkv_create_display_matrix(AVStream *st,
2363 const MatroskaTrackVideoProjection *proj,
2364 void *logctx)
2365 {
2366 AVPacketSideData *sd;
2367 333 double pitch = proj->pitch, yaw = proj->yaw, roll = proj->roll;
2368 int32_t *matrix;
2369 int hflip;
2370
2371
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333 if (pitch == 0.0 && yaw == 0.0 && roll == 0.0)
2372 324 return 0;
2373
2374 /* Note: The following constants are exactly representable
2375 * as floating-point numbers. */
2376
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9 if (pitch != 0.0 || (yaw != 0.0 && yaw != 180.0 && yaw != -180.0) ||
2377 isnan(roll)) {
2378 av_log(logctx, AV_LOG_WARNING, "Ignoring non-2D rectangular "
2379 "projection in stream %u (yaw %f, pitch %f, roll %f)\n",
2380 st->index, yaw, pitch, roll);
2381 return 0;
2382 }
2383 9 sd = av_packet_side_data_new(&st->codecpar->coded_side_data,
2384 9 &st->codecpar->nb_coded_side_data,
2385 AV_PKT_DATA_DISPLAYMATRIX,
2386 9 * sizeof(*matrix), 0);
2387
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9 if (!sd)
2388 return AVERROR(ENOMEM);
2389 9 matrix = (int32_t*)sd->data;
2390
2391 9 hflip = yaw != 0.0;
2392 /* ProjectionPoseRoll is in the counter-clockwise direction
2393 * whereas av_display_rotation_set() expects its argument
2394 * to be oriented clockwise, so we need to negate roll.
2395 * Furthermore, if hflip is set, we need to negate it again
2396 * to account for the fact that the Matroska specifications
2397 * require the yaw rotation to be applied first. */
2398 9 av_display_rotation_set(matrix, roll * (2 * hflip - 1));
2399 9 av_display_matrix_flip(matrix, hflip, 0);
2400
2401 9 return 0;
2402 }
2403
2404 339 static int mkv_parse_video_projection(AVStream *st, const MatroskaTrack *track,
2405 void *logctx)
2406 {
2407 AVSphericalMapping *spherical;
2408 339 const MatroskaTrackVideoProjection *mkv_projection = &track->video.projection;
2409 339 const uint8_t *priv_data = mkv_projection->private.data;
2410 enum AVSphericalProjection projection;
2411 size_t spherical_size;
2412 339 uint32_t l = 0, t = 0, r = 0, b = 0;
2413 339 uint32_t padding = 0;
2414
2415
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339 if (mkv_projection->private.size && priv_data[0] != 0) {
2416 av_log(logctx, AV_LOG_WARNING, "Unknown spherical metadata\n");
2417 return 0;
2418 }
2419
2420
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339 switch (track->video.projection.type) {
2421 333 case MATROSKA_VIDEO_PROJECTION_TYPE_RECTANGULAR:
2422 333 return mkv_create_display_matrix(st, mkv_projection, logctx);
2423 6 case MATROSKA_VIDEO_PROJECTION_TYPE_EQUIRECTANGULAR:
2424
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6 if (track->video.projection.private.size == 20) {
2425 6 t = AV_RB32(priv_data + 4);
2426 6 b = AV_RB32(priv_data + 8);
2427 6 l = AV_RB32(priv_data + 12);
2428 6 r = AV_RB32(priv_data + 16);
2429
2430
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6 if (b >= UINT_MAX - t || r >= UINT_MAX - l) {
2431 av_log(logctx, AV_LOG_ERROR,
2432 "Invalid bounding rectangle coordinates "
2433 "%"PRIu32",%"PRIu32",%"PRIu32",%"PRIu32"\n",
2434 l, t, r, b);
2435 return AVERROR_INVALIDDATA;
2436 }
2437 } else if (track->video.projection.private.size != 0) {
2438 av_log(logctx, AV_LOG_ERROR, "Unknown spherical metadata\n");
2439 return AVERROR_INVALIDDATA;
2440 }
2441
2442
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6 if (l || t || r || b)
2443 6 projection = AV_SPHERICAL_EQUIRECTANGULAR_TILE;
2444 else
2445 projection = AV_SPHERICAL_EQUIRECTANGULAR;
2446 6 break;
2447 case MATROSKA_VIDEO_PROJECTION_TYPE_CUBEMAP:
2448 if (track->video.projection.private.size < 4) {
2449 av_log(logctx, AV_LOG_ERROR, "Missing projection private properties\n");
2450 return AVERROR_INVALIDDATA;
2451 } else if (track->video.projection.private.size == 12) {
2452 uint32_t layout = AV_RB32(priv_data + 4);
2453 if (layout) {
2454 av_log(logctx, AV_LOG_WARNING,
2455 "Unknown spherical cubemap layout %"PRIu32"\n", layout);
2456 return 0;
2457 }
2458 projection = AV_SPHERICAL_CUBEMAP;
2459 padding = AV_RB32(priv_data + 8);
2460 } else {
2461 av_log(logctx, AV_LOG_ERROR, "Unknown spherical metadata\n");
2462 return AVERROR_INVALIDDATA;
2463 }
2464 break;
2465 default:
2466 av_log(logctx, AV_LOG_WARNING,
2467 "Unknown spherical metadata type %"PRIu64"\n",
2468 track->video.projection.type);
2469 return 0;
2470 }
2471
2472 6 spherical = av_spherical_alloc(&spherical_size);
2473
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6 if (!spherical)
2474 return AVERROR(ENOMEM);
2475
2476 6 spherical->projection = projection;
2477
2478 6 spherical->yaw = (int32_t) (track->video.projection.yaw * (1 << 16));
2479 6 spherical->pitch = (int32_t) (track->video.projection.pitch * (1 << 16));
2480 6 spherical->roll = (int32_t) (track->video.projection.roll * (1 << 16));
2481
2482 6 spherical->padding = padding;
2483
2484 6 spherical->bound_left = l;
2485 6 spherical->bound_top = t;
2486 6 spherical->bound_right = r;
2487 6 spherical->bound_bottom = b;
2488
2489
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6 if (!av_packet_side_data_add(&st->codecpar->coded_side_data, &st->codecpar->nb_coded_side_data,
2490 AV_PKT_DATA_SPHERICAL, spherical, spherical_size, 0)) {
2491 av_freep(&spherical);
2492 return AVERROR(ENOMEM);
2493 }
2494
2495 6 return 0;
2496 }
2497
2498 4 static int mkv_parse_dvcc_dvvc(AVFormatContext *s, AVStream *st, const MatroskaTrack *track,
2499 EbmlBin *bin)
2500 {
2501 4 return ff_isom_parse_dvcc_dvvc(s, st, bin->data, bin->size);
2502 }
2503
2504 447 static int mkv_parse_block_addition_mappings(AVFormatContext *s, AVStream *st, MatroskaTrack *track)
2505 {
2506 447 const EbmlList *mappings_list = &track->block_addition_mappings;
2507 447 MatroskaBlockAdditionMapping *mappings = mappings_list->elem;
2508 int ret;
2509
2510
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453 for (int i = 0; i < mappings_list->nb_elem; i++) {
2511 6 MatroskaBlockAdditionMapping *mapping = &mappings[i];
2512 6 uint64_t type = mapping->type;
2513
2514
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6 switch (mapping->type) {
2515 case MATROSKA_BLOCK_ADD_ID_TYPE_DEFAULT:
2516 av_log(s, AV_LOG_DEBUG,
2517 "Explicit block Addition Mapping type \"Use BlockAddIDValue\", value %"PRIu64","
2518 " name \"%s\" found.\n", mapping->value, mapping->name ? mapping->name : "");
2519 type = MATROSKA_BLOCK_ADD_ID_TYPE_OPAQUE;
2520 // fall-through
2521 2 case MATROSKA_BLOCK_ADD_ID_TYPE_OPAQUE:
2522 case MATROSKA_BLOCK_ADD_ID_TYPE_ITU_T_T35:
2523
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2 if (mapping->value != type) {
2524 int strict = s->strict_std_compliance >= FF_COMPLIANCE_STRICT;
2525 av_log(s, strict ? AV_LOG_ERROR : AV_LOG_WARNING,
2526 "Invalid Block Addition Value 0x%"PRIx64" for Block Addition Mapping Type "
2527 "0x%"PRIx64", name \"%s\"\n", mapping->value, mapping->type,
2528 mapping->name ? mapping->name : "");
2529 if (strict)
2530 return AVERROR_INVALIDDATA;
2531 }
2532 2 break;
2533 4 case MATROSKA_BLOCK_ADD_ID_TYPE_DVCC:
2534 case MATROSKA_BLOCK_ADD_ID_TYPE_DVVC:
2535
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4 if ((ret = mkv_parse_dvcc_dvvc(s, st, track, &mapping->extradata)) < 0)
2536 return ret;
2537
2538 4 break;
2539 default:
2540 av_log(s, AV_LOG_DEBUG,
2541 "Unknown Block Addition Mapping type 0x%"PRIx64", value %"PRIu64", name \"%s\"\n",
2542 mapping->type, mapping->value, mapping->name ? mapping->name : "");
2543 if (mapping->value < 2) {
2544 int strict = s->strict_std_compliance >= FF_COMPLIANCE_STRICT;
2545 av_log(s, strict ? AV_LOG_ERROR : AV_LOG_WARNING,
2546 "Invalid Block Addition value 0x%"PRIu64" for unknown Block Addition Mapping "
2547 "type %"PRIx64", name \"%s\"\n", mapping->value, mapping->type,
2548 mapping->name ? mapping->name : "");
2549 if (strict)
2550 return AVERROR_INVALIDDATA;
2551 }
2552 break;
2553 }
2554 }
2555
2556 447 return 0;
2557 }
2558
2559 1 static int get_qt_codec(MatroskaTrack *track, uint32_t *fourcc, enum AVCodecID *codec_id)
2560 {
2561 const AVCodecTag *codec_tags;
2562
2563 2 codec_tags = track->type == MATROSKA_TRACK_TYPE_VIDEO ?
2564
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1 ff_codec_movvideo_tags : ff_codec_movaudio_tags;
2565
2566 /* Normalize noncompliant private data that starts with the fourcc
2567 * by expanding/shifting the data by 4 bytes and storing the data
2568 * size at the start. */
2569
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1 if (ff_codec_get_id(codec_tags, AV_RL32(track->codec_priv.data))) {
2570 int ret = av_buffer_realloc(&track->codec_priv.buf,
2571 track->codec_priv.size + 4 + AV_INPUT_BUFFER_PADDING_SIZE);
2572 if (ret < 0)
2573 return ret;
2574
2575 track->codec_priv.data = track->codec_priv.buf->data;
2576 memmove(track->codec_priv.data + 4, track->codec_priv.data, track->codec_priv.size);
2577 track->codec_priv.size += 4;
2578 AV_WB32(track->codec_priv.data, track->codec_priv.size);
2579 }
2580
2581 1 *fourcc = AV_RL32(track->codec_priv.data + 4);
2582 1 *codec_id = ff_codec_get_id(codec_tags, *fourcc);
2583
2584 1 return 0;
2585 }
2586
2587 /* An enum with potential return values of the functions for parsing a track.
2588 * Apart from that all these functions can also indicate ordinary errors via
2589 * negative return values. */
2590 enum {
2591 SKIP_TRACK = 1,
2592 };
2593
2594 #define AAC_MAX_EXTRADATA_SIZE 5
2595 #define TTA_EXTRADATA_SIZE 22
2596 #define WAVPACK_EXTRADATA_SIZE 2
2597 /* Performs the codec-specific part of parsing an audio track. */
2598 84 static int mka_parse_audio_codec(MatroskaTrack *track, AVCodecParameters *par,
2599 const MatroskaDemuxContext *matroska,
2600 AVFormatContext *s, int *extradata_offset)
2601 {
2602 uint8_t extradata[FFMAX3(AAC_MAX_EXTRADATA_SIZE,
2603 TTA_EXTRADATA_SIZE,
2604 WAVPACK_EXTRADATA_SIZE)];
2605 84 int extradata_size = 0; // > 0 means that the extradata buffer is used
2606 int ret;
2607
2608
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84 if (!strcmp(track->codec_id, "A_MS/ACM") &&
2609
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1 track->codec_priv.size >= 14) {
2610 FFIOContext b;
2611 1 ffio_init_read_context(&b, track->codec_priv.data,
2612 track->codec_priv.size);
2613 1 ret = ff_get_wav_header(s, &b.pub, par,
2614 track->codec_priv.size, 0);
2615
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1 if (ret < 0)
2616 return ret;
2617 1 *extradata_offset = FFMIN(track->codec_priv.size, 18);
2618 1 return 0;
2619
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83 } else if (!strcmp(track->codec_id, "A_QUICKTIME") &&
2620 /* Normally 36, but allow noncompliant private data */
2621 track->codec_priv.size >= 32) {
2622 enum AVCodecID codec_id;
2623 uint32_t fourcc;
2624 uint16_t sample_size;
2625
2626 ret = get_qt_codec(track, &fourcc, &codec_id);
2627 if (ret < 0)
2628 return ret;
2629 sample_size = AV_RB16(track->codec_priv.data + 26);
2630 if (fourcc == 0) {
2631 if (sample_size == 8) {
2632 fourcc = MKTAG('r','a','w',' ');
2633 codec_id = ff_codec_get_id(ff_codec_movaudio_tags, fourcc);
2634 } else if (sample_size == 16) {
2635 fourcc = MKTAG('t','w','o','s');
2636 codec_id = ff_codec_get_id(ff_codec_movaudio_tags, fourcc);
2637 }
2638 }
2639 if ((fourcc == MKTAG('t','w','o','s') ||
2640 fourcc == MKTAG('s','o','w','t')) && sample_size == 8)
2641 codec_id = AV_CODEC_ID_PCM_S8;
2642 par->codec_id = codec_id;
2643 par->codec_tag = fourcc;
2644 return 0;
2645 }
2646
2647
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83 switch (par->codec_id) {
2648 5 case AV_CODEC_ID_PCM_S16BE:
2649
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5 switch (track->audio.bitdepth) {
2650 case 8:
2651 par->codec_id = AV_CODEC_ID_PCM_U8;
2652 break;
2653 1 case 24:
2654 1 par->codec_id = AV_CODEC_ID_PCM_S24BE;
2655 1 break;
2656 2 case 32:
2657 2 par->codec_id = AV_CODEC_ID_PCM_S32BE;
2658 2 break;
2659 }
2660 5 break;
2661 7 case AV_CODEC_ID_PCM_S16LE:
2662
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7 switch (track->audio.bitdepth) {
2663 1 case 8:
2664 1 par->codec_id = AV_CODEC_ID_PCM_U8;
2665 1 break;
2666 3 case 24:
2667 3 par->codec_id = AV_CODEC_ID_PCM_S24LE;
2668 3 break;
2669 2 case 32:
2670 2 par->codec_id = AV_CODEC_ID_PCM_S32LE;
2671 2 break;
2672 }
2673 7 break;
2674 case AV_CODEC_ID_PCM_F32LE:
2675 if (track->audio.bitdepth == 64)
2676 par->codec_id = AV_CODEC_ID_PCM_F64LE;
2677 break;
2678 12 case AV_CODEC_ID_AAC:
2679
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12 if (!track->codec_priv.size) {
2680 int profile = matroska_aac_profile(track->codec_id);
2681 int sri = matroska_aac_sri(track->audio.samplerate);
2682
2683 extradata[0] = (profile << 3) | ((sri & 0x0E) >> 1);
2684 extradata[1] = ((sri & 0x01) << 7) | (track->audio.channels << 3);
2685 if (strstr(track->codec_id, "SBR")) {
2686 sri = matroska_aac_sri(track->audio.out_samplerate);
2687 extradata[2] = 0x56;
2688 extradata[3] = 0xE5;
2689 extradata[4] = 0x80 | (sri << 3);
2690 extradata_size = 5;
2691 } else
2692 extradata_size = 2;
2693 }
2694 12 break;
2695 2 case AV_CODEC_ID_ALAC:
2696
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2 if (track->codec_priv.size && track->codec_priv.size < INT_MAX - 12 - AV_INPUT_BUFFER_PADDING_SIZE) {
2697 /* Only ALAC's magic cookie is stored in Matroska's track headers.
2698 * Create the "atom size", "tag", and "tag version" fields the
2699 * decoder expects manually. */
2700 2 ret = ff_alloc_extradata(par, 12 + track->codec_priv.size);
2701
1/2
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2 if (ret < 0)
2702 return ret;
2703 2 AV_WB32(par->extradata, par->extradata_size);
2704 2 AV_WB32(&par->extradata[4], MKBETAG('a', 'l', 'a', 'c'));
2705 2 AV_WB32(&par->extradata[8], 0);
2706 2 memcpy(&par->extradata[12], track->codec_priv.data,
2707 2 track->codec_priv.size);
2708 }
2709 2 break;
2710 3 case AV_CODEC_ID_TTA:
2711 {
2712 uint8_t *ptr;
2713
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3 if (track->audio.channels > UINT16_MAX ||
2714
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3 track->audio.bitdepth > UINT16_MAX) {
2715 av_log(matroska->ctx, AV_LOG_WARNING,
2716 "Too large audio channel number %"PRIu64
2717 " or bitdepth %"PRIu64". Skipping track.\n",
2718 track->audio.channels, track->audio.bitdepth);
2719 if (matroska->ctx->error_recognition & AV_EF_EXPLODE)
2720 return AVERROR_INVALIDDATA;
2721 else
2722 return SKIP_TRACK;
2723 }
2724
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3 if (track->audio.out_samplerate < 0 || track->audio.out_samplerate > INT_MAX)
2725 return AVERROR_INVALIDDATA;
2726 3 extradata_size = TTA_EXTRADATA_SIZE;
2727 3 ptr = extradata;
2728 3 bytestream_put_be32(&ptr, AV_RB32("TTA1"));
2729 3 bytestream_put_le16(&ptr, 1);
2730 3 bytestream_put_le16(&ptr, track->audio.channels);
2731 3 bytestream_put_le16(&ptr, track->audio.bitdepth);
2732 3 bytestream_put_le32(&ptr, track->audio.out_samplerate);
2733 3 bytestream_put_le32(&ptr, av_rescale(matroska->duration * matroska->time_scale,
2734 3 track->audio.out_samplerate,
2735 AV_TIME_BASE * 1000));
2736 3 break;
2737 }
2738 case AV_CODEC_ID_RA_144:
2739 track->audio.out_samplerate = 8000;
2740 track->audio.channels = 1;
2741 break;
2742 case AV_CODEC_ID_RA_288:
2743 case AV_CODEC_ID_COOK:
2744 case AV_CODEC_ID_ATRAC3:
2745 case AV_CODEC_ID_SIPR:
2746 {
2747 const uint8_t *ptr = track->codec_priv.data;
2748 int flavor;
2749
2750 if (!track->codec_priv.size)
2751 break;
2752
2753 if (track->codec_priv.size < 46)
2754 return AVERROR_INVALIDDATA;
2755 ptr += 22;
2756 flavor = bytestream_get_be16(&ptr);
2757 track->audio.coded_framesize = bytestream_get_be32(&ptr);
2758 ptr += 12;
2759 track->audio.sub_packet_h = bytestream_get_be16(&ptr);
2760 track->audio.frame_size = bytestream_get_be16(&ptr);
2761 track->audio.sub_packet_size = bytestream_get_be16(&ptr);
2762 if (track->audio.coded_framesize <= 0 ||
2763 track->audio.sub_packet_h <= 0 ||
2764 track->audio.frame_size <= 0)
2765 return AVERROR_INVALIDDATA;
2766
2767 if (par->codec_id == AV_CODEC_ID_RA_288) {
2768 if (track->audio.sub_packet_h & 1 || 2 * track->audio.frame_size
2769 != (int64_t)track->audio.sub_packet_h * track->audio.coded_framesize)
2770 return AVERROR_INVALIDDATA;
2771 par->block_align = track->audio.coded_framesize;
2772 track->codec_priv.size = 0;
2773 } else {
2774 if (par->codec_id == AV_CODEC_ID_SIPR) {
2775 static const int sipr_bit_rate[4] = { 6504, 8496, 5000, 16000 };
2776 if (flavor > 3)
2777 return AVERROR_INVALIDDATA;
2778 track->audio.sub_packet_size = ff_sipr_subpk_size[flavor];
2779 par->bit_rate = sipr_bit_rate[flavor];
2780 } else if (track->audio.sub_packet_size <= 0 ||
2781 track->audio.frame_size % track->audio.sub_packet_size)
2782 return AVERROR_INVALIDDATA;
2783 par->block_align = track->audio.sub_packet_size;
2784 *extradata_offset = 78;
2785 }
2786 track->audio.buf = av_malloc_array(track->audio.sub_packet_h,
2787 track->audio.frame_size);
2788 if (!track->audio.buf)
2789 return AVERROR(ENOMEM);
2790 break;
2791 }
2792 1 case AV_CODEC_ID_ATRAC1:
2793 /* ATRAC1 uses a constant frame size.
2794 * Typical ATRAC1 streams are either mono or stereo.
2795 * At most, ATRAC1 was used to store 8 channels of audio. */
2796
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1 if (track->audio.channels > 8)
2797 return AVERROR_INVALIDDATA;
2798 1 par->block_align = track->audio.channels * 212;
2799 1 break;
2800 9 case AV_CODEC_ID_FLAC:
2801
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9 if (track->codec_priv.size) {
2802 9 ret = matroska_parse_flac(s, track, extradata_offset);
2803
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9 if (ret < 0)
2804 return ret;
2805 }
2806 9 break;
2807 2 case AV_CODEC_ID_WAVPACK:
2808
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2 if (track->codec_priv.size < 2) {
2809 1 av_log(matroska->ctx, AV_LOG_INFO, "Assuming WavPack version 4.10 "
2810 "in absence of valid CodecPrivate.\n");
2811 1 extradata_size = WAVPACK_EXTRADATA_SIZE;
2812 1 AV_WL16(extradata, 0x410);
2813 }
2814 2 break;
2815 }
2816
2817
2/2
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83 if (extradata_size > 0) {
2818 4 ret = ff_alloc_extradata(par, extradata_size);
2819
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4 if (ret < 0)
2820 return ret;
2821 4 memcpy(par->extradata, extradata, extradata_size);
2822 }
2823
2824 83 return 0;
2825 }
2826
2827 /* Performs the generic part of parsing an audio track. */
2828 84 static int mka_parse_audio(MatroskaTrack *track, AVStream *st,
2829 AVCodecParameters *par,
2830 const MatroskaDemuxContext *matroska,
2831 AVFormatContext *s, int *extradata_offset)
2832 {
2833 84 FFStream *const sti = ffstream(st);
2834 int ret;
2835
2836 84 ret = mka_parse_audio_codec(track, par, matroska,
2837 s, extradata_offset);
2838
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84 if (ret)
2839 return ret;
2840
2841 84 par->codec_type = AVMEDIA_TYPE_AUDIO;
2842 84 par->sample_rate = track->audio.out_samplerate;
2843 // channel layout may be already set by codec private checks above
2844
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84 if (!av_channel_layout_check(&par->ch_layout)) {
2845
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75 if (track->audio.channels > INT32_MAX)
2846 return AVERROR_PATCHWELCOME;
2847 75 par->ch_layout.order = AV_CHANNEL_ORDER_UNSPEC;
2848 75 par->ch_layout.nb_channels = track->audio.channels;
2849 }
2850
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84 if (!par->bits_per_coded_sample)
2851 83 par->bits_per_coded_sample = track->audio.bitdepth;
2852
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84 if (par->codec_id == AV_CODEC_ID_MP3 ||
2853
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83 par->codec_id == AV_CODEC_ID_MLP ||
2854
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83 par->codec_id == AV_CODEC_ID_TRUEHD)
2855 1 sti->need_parsing = AVSTREAM_PARSE_FULL;
2856
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83 else if (par->codec_id != AV_CODEC_ID_AAC)
2857 71 sti->need_parsing = AVSTREAM_PARSE_HEADERS;
2858
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84 if (track->codec_delay > 0) {
2859 11 par->initial_padding = av_rescale_q(track->codec_delay,
2860 11 (AVRational){1, 1000000000},
2861 11 (AVRational){1, par->codec_id == AV_CODEC_ID_OPUS ?
2862
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11 48000 : par->sample_rate});
2863 }
2864
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84 if (track->seek_preroll > 0) {
2865 7 par->seek_preroll = av_rescale_q(track->seek_preroll,
2866 7 (AVRational){1, 1000000000},
2867 7 (AVRational){1, par->sample_rate});
2868 }
2869
2870 84 return 0;
2871 }
2872
2873 /* Performs the codec-specific part of parsing a video track. */
2874 339 static int mkv_parse_video_codec(MatroskaTrack *track, AVCodecParameters *par,
2875 const MatroskaDemuxContext *matroska,
2876 int *extradata_offset)
2877 {
2878
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339 if (!strcmp(track->codec_id, "V_MS/VFW/FOURCC") &&
2879
1/2
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5 track->codec_priv.size >= 40) {
2880 5 uint32_t size = AV_RL32A(track->codec_priv.data);
2881 // VFW extradata is padded to an even length, yet
2882 // the size field contains the real length.
2883
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5 if (size & 1 && size == track->codec_priv.size - 1)
2884 --track->codec_priv.size;
2885 5 track->ms_compat = 1;
2886 5 par->bits_per_coded_sample = AV_RL16(track->codec_priv.data + 14);
2887 5 par->codec_tag = AV_RL32(track->codec_priv.data + 16);
2888 5 par->codec_id = ff_codec_get_id(ff_codec_bmp_tags,
2889 par->codec_tag);
2890
1/2
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5 if (!par->codec_id)
2891 par->codec_id = ff_codec_get_id(ff_codec_movvideo_tags,
2892 par->codec_tag);
2893 5 *extradata_offset = 40;
2894 5 return 0;
2895
2/2
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334 } else if (!strcmp(track->codec_id, "V_QUICKTIME") &&
2896
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1 track->codec_priv.size >= 21) {
2897 enum AVCodecID codec_id;
2898 uint32_t fourcc;
2899 1 int ret = get_qt_codec(track, &fourcc, &codec_id);
2900
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1 if (ret < 0)
2901 return ret;
2902
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1 if (codec_id == AV_CODEC_ID_NONE && AV_RL32(track->codec_priv.data+4) == AV_RL32("SMI ")) {
2903 fourcc = MKTAG('S','V','Q','3');
2904 codec_id = ff_codec_get_id(ff_codec_movvideo_tags, fourcc);
2905 }
2906 1 par->codec_id = codec_id;
2907
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1 if (codec_id == AV_CODEC_ID_NONE)
2908 av_log(matroska->ctx, AV_LOG_ERROR,
2909 "mov FourCC not found %s.\n", av_fourcc2str(fourcc));
2910
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1 if (track->codec_priv.size >= 86) {
2911 FFIOContext b;
2912 1 unsigned bit_depth = AV_RB16(track->codec_priv.data + 82);
2913 1 ffio_init_read_context(&b, track->codec_priv.data,
2914 track->codec_priv.size);
2915
1/2
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1 if (ff_get_qtpalette(codec_id, &b.pub, track->palette)) {
2916 bit_depth &= 0x1F;
2917 track->has_palette = 1;
2918 }
2919 1 par->bits_per_coded_sample = bit_depth;
2920 }
2921 1 par->codec_tag = fourcc;
2922 1 return 0;
2923 }
2924
2925
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333 switch (par->codec_id) {
2926 case AV_CODEC_ID_RV10:
2927 case AV_CODEC_ID_RV20:
2928 case AV_CODEC_ID_RV30:
2929 case AV_CODEC_ID_RV40:
2930 *extradata_offset = 26;
2931 break;
2932 5 case AV_CODEC_ID_PRORES:
2933
1/2
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✗ Branch 1 not taken.
5 if (track->codec_priv.size == 4)
2934 5 par->codec_tag = AV_RL32(track->codec_priv.data);
2935 5 break;
2936 249 case AV_CODEC_ID_VP9:
2937 /* we don't need any value stored in CodecPrivate.
2938 * make sure that it's not exported as extradata. */
2939 249 track->codec_priv.size = 0;
2940 249 break;
2941 }
2942
2943 333 return 0;
2944 }
2945
2946 /* Performs the generic part of parsing a video track. */
2947 339 static int mkv_parse_video(MatroskaTrack *track, AVStream *st,
2948 AVCodecParameters *par,
2949 const MatroskaDemuxContext *matroska,
2950 int *extradata_offset)
2951 {
2952 339 FFStream *const sti = ffstream(st);
2953 MatroskaTrackPlane *planes;
2954 339 int display_width_mul = 1;
2955 339 int display_height_mul = 1;
2956 int ret;
2957
2958
2/2
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339 if (track->video.color_space.size == 4)
2959 4 par->codec_tag = AV_RL32(track->video.color_space.data);
2960
2961 339 ret = mkv_parse_video_codec(track, par, matroska,
2962 extradata_offset);
2963
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✓ Branch 1 taken 339 times.
339 if (ret < 0)
2964 return ret;
2965
2966 339 par->codec_type = AVMEDIA_TYPE_VIDEO;
2967 339 par->width = track->video.pixel_width;
2968 339 par->height = track->video.pixel_height;
2969
2970
2/2
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339 if (track->video.interlaced == MATROSKA_VIDEO_INTERLACE_FLAG_INTERLACED)
2971 7 par->field_order = mkv_field_order(matroska, track->video.field_order);
2972
2/2
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332 else if (track->video.interlaced == MATROSKA_VIDEO_INTERLACE_FLAG_PROGRESSIVE)
2973 21 par->field_order = AV_FIELD_PROGRESSIVE;
2974
2975
4/4
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339 if (track->video.stereo_mode && track->video.stereo_mode < MATROSKA_VIDEO_STEREOMODE_TYPE_NB)
2976 12 mkv_stereo_mode_display_mul(track->video.stereo_mode,
2977 &display_width_mul, &display_height_mul);
2978
2979
2/2
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339 if (track->video.display_unit < MATROSKA_VIDEO_DISPLAYUNIT_UNKNOWN) {
2980
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311 if (track->video.display_width && track->video.display_height &&
2981
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✗ Branch 3 not taken.
311 track->video.display_width != -1 && track->video.display_height != -1 &&
2982
1/2
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✗ Branch 1 not taken.
311 track->video.cropped_height < INT64_MAX / track->video.display_width / display_width_mul &&
2983
1/2
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✗ Branch 1 not taken.
311 track->video.cropped_width < INT64_MAX / track->video.display_height / display_height_mul)
2984 311 av_reduce(&st->sample_aspect_ratio.num,
2985 &st->sample_aspect_ratio.den,
2986 311 track->video.cropped_height * track->video.display_width * display_width_mul,
2987 311 track->video.cropped_width * track->video.display_height * display_height_mul,
2988 INT_MAX);
2989 }
2990
2/2
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✓ Branch 1 taken 4 times.
339 if (track->video.cropped_width != track->video.pixel_width ||
2991
1/2
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335 track->video.cropped_height != track->video.pixel_height) {
2992 uint8_t *cropping;
2993 4 AVPacketSideData *sd = av_packet_side_data_new(&st->codecpar->coded_side_data,
2994 4 &st->codecpar->nb_coded_side_data,
2995 AV_PKT_DATA_FRAME_CROPPING,
2996 sizeof(uint32_t) * 4, 0);
2997
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 4 times.
4 if (!sd)
2998 return AVERROR(ENOMEM);
2999
3000 4 cropping = sd->data;
3001 4 bytestream_put_le32(&cropping, track->video.pixel_cropt);
3002 4 bytestream_put_le32(&cropping, track->video.pixel_cropb);
3003 4 bytestream_put_le32(&cropping, track->video.pixel_cropl);
3004 4 bytestream_put_le32(&cropping, track->video.pixel_cropr);
3005 }
3006
2/2
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✓ Branch 1 taken 13 times.
339 if (par->codec_id != AV_CODEC_ID_HEVC)
3007 326 sti->need_parsing = AVSTREAM_PARSE_HEADERS;
3008
3009
2/2
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✓ Branch 1 taken 42 times.
339 if (track->default_duration) {
3010
1/2
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✗ Branch 1 not taken.
297 int div = track->default_duration <= INT64_MAX ? 1 : 2;
3011 297 av_reduce(&st->avg_frame_rate.num, &st->avg_frame_rate.den,
3012 297 1000000000 / div, track->default_duration / div, 30000);
3013 #if FF_API_R_FRAME_RATE
3014
2/2
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✓ Branch 1 taken 2 times.
297 if ( st->avg_frame_rate.num < st->avg_frame_rate.den * 1000LL
3015
2/2
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✓ Branch 1 taken 21 times.
295 && st->avg_frame_rate.num > st->avg_frame_rate.den * 5LL)
3016 274 st->r_frame_rate = st->avg_frame_rate;
3017 #endif
3018 }
3019
3020 /* export stereo mode flag as metadata tag */
3021
4/4
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✓ Branch 2 taken 12 times.
✓ Branch 3 taken 99 times.
339 if (track->video.stereo_mode && track->video.stereo_mode < MATROSKA_VIDEO_STEREOMODE_TYPE_NB)
3022 12 av_dict_set(&st->metadata, "stereo_mode", ff_matroska_video_stereo_mode[track->video.stereo_mode], 0);
3023
3024 /* export alpha mode flag as metadata tag */
3025
2/2
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✓ Branch 1 taken 336 times.
339 if (track->video.alpha_mode)
3026 3 av_dict_set_int(&st->metadata, "alpha_mode", 1, 0);
3027
3028 /* if we have virtual track, mark the real tracks */
3029 339 planes = track->operation.combine_planes.elem;
3030
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 339 times.
339 for (int j = 0; j < track->operation.combine_planes.nb_elem; j++) {
3031 MatroskaTrack *tracks = matroska->tracks.elem;
3032 char buf[32];
3033 if (planes[j].type >= MATROSKA_VIDEO_STEREO_PLANE_COUNT)
3034 continue;
3035 snprintf(buf, sizeof(buf), "%s_%d",
3036 matroska_video_stereo_plane[planes[j].type], st->index);
3037 for (int k = 0; k < matroska->tracks.nb_elem; k++)
3038 if (planes[j].uid == tracks[k].uid && tracks[k].stream) {
3039 av_dict_set(&tracks[k].stream->metadata,
3040 "stereo_mode", buf, 0);
3041 break;
3042 }
3043 }
3044 // add stream level stereo3d side data if it is a supported format
3045
2/2
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✓ Branch 1 taken 99 times.
339 if (track->video.stereo_mode < MATROSKA_VIDEO_STEREOMODE_TYPE_NB &&
3046
2/2
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✓ Branch 1 taken 2 times.
240 track->video.stereo_mode != MATROSKA_VIDEO_STEREOMODE_TYPE_ANAGLYPH_CYAN_RED &&
3047
2/2
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✓ Branch 1 taken 2 times.
238 track->video.stereo_mode != MATROSKA_VIDEO_STEREOMODE_TYPE_ANAGLYPH_GREEN_MAG) {
3048 236 int ret = mkv_stereo3d_conv(st, track->video.stereo_mode);
3049
1/2
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✓ Branch 1 taken 236 times.
236 if (ret < 0)
3050 return ret;
3051 }
3052
3053 339 ret = mkv_parse_video_color(st, track);
3054
1/2
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339 if (ret < 0)
3055 return ret;
3056 339 ret = mkv_parse_video_projection(st, track, matroska->ctx);
3057
1/2
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✓ Branch 1 taken 339 times.
339 if (ret < 0)
3058 return ret;
3059
3060 339 return 0;
3061 }
3062
3063 /* Performs the codec-specific part of parsing a subtitle track. */
3064 24 static int mkv_parse_subtitle_codec(MatroskaTrack *track, AVStream *st,
3065 AVCodecParameters *par,
3066 const MatroskaDemuxContext *matroska)
3067 {
3068
2/3
✗ Branch 0 not taken.
✓ Branch 1 taken 8 times.
✓ Branch 2 taken 16 times.
24 switch (par->codec_id) {
3069 case AV_CODEC_ID_ARIB_CAPTION:
3070 if (track->codec_priv.size == 3) {
3071 int component_tag = track->codec_priv.data[0];
3072 int data_component_id = AV_RB16(track->codec_priv.data + 1);
3073
3074 switch (data_component_id) {
3075 case 0x0008:
3076 // [0x30..0x37] are component tags utilized for
3077 // non-mobile captioning service ("profile A").
3078 if (component_tag >= 0x30 && component_tag <= 0x37) {
3079 par->profile = AV_PROFILE_ARIB_PROFILE_A;
3080 }
3081 break;
3082 case 0x0012:
3083 // component tag 0x87 signifies a mobile/partial reception
3084 // (1seg) captioning service ("profile C").
3085 if (component_tag == 0x87) {
3086 par->profile = AV_PROFILE_ARIB_PROFILE_C;
3087 }
3088 break;
3089 default:
3090 break;
3091 }
3092
3093 if (par->profile == AV_PROFILE_UNKNOWN)
3094 av_log(matroska->ctx, AV_LOG_WARNING,
3095 "Unknown ARIB caption profile utilized: %02x / %04x\n",
3096 component_tag, data_component_id);
3097
3098 track->codec_priv.size = 0;
3099 }
3100 break;
3101 8 case AV_CODEC_ID_WEBVTT:
3102
2/2
✓ Branch 0 taken 2 times.
✓ Branch 1 taken 6 times.
8 if (!strcmp(track->codec_id, "D_WEBVTT/CAPTIONS")) {
3103 2 st->disposition |= AV_DISPOSITION_CAPTIONS;
3104
2/2
✓ Branch 0 taken 2 times.
✓ Branch 1 taken 4 times.
6 } else if (!strcmp(track->codec_id, "D_WEBVTT/DESCRIPTIONS")) {
3105 2 st->disposition |= AV_DISPOSITION_DESCRIPTIONS;
3106
2/2
✓ Branch 0 taken 2 times.
✓ Branch 1 taken 2 times.
4 } else if (!strcmp(track->codec_id, "D_WEBVTT/METADATA")) {
3107 2 st->disposition |= AV_DISPOSITION_METADATA;
3108 }
3109 8 break;
3110 }
3111
3112 24 return 0;
3113 }
3114
3115 372 static int matroska_parse_tracks(AVFormatContext *s)
3116 {
3117 372 MatroskaDemuxContext *matroska = s->priv_data;
3118 372 MatroskaTrack *tracks = matroska->tracks.elem;
3119 int i, j, ret;
3120
3121
2/2
✓ Branch 0 taken 447 times.
✓ Branch 1 taken 372 times.
819 for (i = 0; i < matroska->tracks.nb_elem; i++) {
3122 447 MatroskaTrack *track = &tracks[i];
3123 447 enum AVCodecID codec_id = AV_CODEC_ID_NONE;
3124 AVCodecParameters *par;
3125 MatroskaTrackType type;
3126 447 int extradata_offset = 0;
3127 AVStream *st;
3128 447 char* key_id_base64 = NULL;
3129
3130 /* Apply some sanity checks. */
3131
2/2
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✓ Branch 1 taken 339 times.
447 if (track->type != MATROSKA_TRACK_TYPE_VIDEO &&
3132
2/2
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✓ Branch 1 taken 84 times.
108 track->type != MATROSKA_TRACK_TYPE_AUDIO &&
3133
2/2
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✓ Branch 1 taken 20 times.
24 track->type != MATROSKA_TRACK_TYPE_SUBTITLE &&
3134
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 4 times.
4 track->type != MATROSKA_TRACK_TYPE_METADATA) {
3135 av_log(matroska->ctx, AV_LOG_INFO,
3136 "Unknown or unsupported track type %"PRIu64"\n",
3137 track->type);
3138 continue;
3139 }
3140
1/2
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✓ Branch 1 taken 447 times.
447 if (!track->codec_id)
3141 continue;
3142
3143
3/4
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✓ Branch 1 taken 363 times.
✓ Branch 2 taken 84 times.
✗ Branch 3 not taken.
447 if ( track->type == MATROSKA_TRACK_TYPE_AUDIO && track->codec_id[0] != 'A'
3144
3/4
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✓ Branch 1 taken 108 times.
✓ Branch 2 taken 339 times.
✗ Branch 3 not taken.
447 || track->type == MATROSKA_TRACK_TYPE_VIDEO && track->codec_id[0] != 'V'
3145
5/6
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✓ Branch 1 taken 427 times.
✓ Branch 2 taken 16 times.
✓ Branch 3 taken 4 times.
✓ Branch 4 taken 16 times.
✗ Branch 5 not taken.
447 || track->type == MATROSKA_TRACK_TYPE_SUBTITLE && track->codec_id[0] != 'D' && track->codec_id[0] != 'S'
3146
3/6
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✗ Branch 5 not taken.
447 || track->type == MATROSKA_TRACK_TYPE_METADATA && track->codec_id[0] != 'D' && track->codec_id[0] != 'S'
3147 ) {
3148 av_log(matroska->ctx, AV_LOG_INFO, "Inconsistent track type\n");
3149 continue;
3150 }
3151
3152
2/4
✓ Branch 0 taken 447 times.
✗ Branch 1 not taken.
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✗ Branch 3 not taken.
447 if (track->audio.samplerate < 0 || track->audio.samplerate > INT_MAX ||
3153
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 447 times.
447 isnan(track->audio.samplerate)) {
3154 av_log(matroska->ctx, AV_LOG_WARNING,
3155 "Invalid sample rate %f, defaulting to 8000 instead.\n",
3156 track->audio.samplerate);
3157 track->audio.samplerate = 8000;
3158 }
3159
3160
2/2
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✓ Branch 1 taken 108 times.
447 if (track->type == MATROSKA_TRACK_TYPE_VIDEO) {
3161
4/4
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✓ Branch 1 taken 93 times.
✓ Branch 2 taken 204 times.
✓ Branch 3 taken 42 times.
339 if (!track->default_duration && track->video.frame_rate > 0) {
3162 204 double default_duration = 1000000000 / track->video.frame_rate;
3163
2/4
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✗ Branch 1 not taken.
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204 if (default_duration > UINT64_MAX || default_duration < 0) {
3164 av_log(matroska->ctx, AV_LOG_WARNING,
3165 "Invalid frame rate %e. Cannot calculate default duration.\n",
3166 track->video.frame_rate);
3167 } else {
3168 204 track->default_duration = default_duration;
3169 }
3170 }
3171
1/2
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✗ Branch 1 not taken.
339 if (track->video.pixel_cropl >= INT_MAX - track->video.pixel_cropr ||
3172
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✗ Branch 1 not taken.
339 track->video.pixel_cropt >= INT_MAX - track->video.pixel_cropb ||
3173
1/2
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✗ Branch 1 not taken.
339 (track->video.pixel_cropl + track->video.pixel_cropr) >= track->video.pixel_width ||
3174
1/2
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✓ Branch 1 taken 339 times.
339 (track->video.pixel_cropt + track->video.pixel_cropb) >= track->video.pixel_height)
3175 return AVERROR_INVALIDDATA;
3176 339 track->video.cropped_width = track->video.pixel_width -
3177 339 track->video.pixel_cropl - track->video.pixel_cropr;
3178 339 track->video.cropped_height = track->video.pixel_height -
3179 339 track->video.pixel_cropt - track->video.pixel_cropb;
3180
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✓ Branch 1 taken 43 times.
339 if (track->video.display_unit == MATROSKA_VIDEO_DISPLAYUNIT_PIXELS) {
3181
2/2
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✓ Branch 1 taken 33 times.
296 if (track->video.display_width == -1)
3182 263 track->video.display_width = track->video.cropped_width;
3183
2/2
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✓ Branch 1 taken 33 times.
296 if (track->video.display_height == -1)
3184 263 track->video.display_height = track->video.cropped_height;
3185 }
3186
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✓ Branch 1 taken 24 times.
108 } else if (track->type == MATROSKA_TRACK_TYPE_AUDIO) {
3187
2/2
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✓ Branch 1 taken 1 times.
84 if (!track->audio.out_samplerate)
3188 83 track->audio.out_samplerate = track->audio.samplerate;
3189 }
3190 447 ret = matroska_parse_content_encodings(track->encodings.elem,
3191 447 track->encodings.nb_elem,
3192 447 track, &key_id_base64, matroska->ctx);
3193
1/2
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✓ Branch 1 taken 447 times.
447 if (ret < 0)
3194 return ret;
3195
3196
2/2
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✓ Branch 1 taken 7 times.
26806 for (j = 0; ff_mkv_codec_tags[j].id != AV_CODEC_ID_NONE; j++) {
3197
2/2
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✓ Branch 2 taken 26359 times.
26799 if (av_strstart(track->codec_id, ff_mkv_codec_tags[j].str, NULL)) {
3198 440 codec_id = ff_mkv_codec_tags[j].id;
3199 440 break;
3200 }
3201 }
3202
3203 447 st = track->stream = avformat_new_stream(s, NULL);
3204
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 447 times.
447 if (!st) {
3205 av_free(key_id_base64);
3206 return AVERROR(ENOMEM);
3207 }
3208 447 par = st->codecpar;
3209
3210 447 par->codec_id = codec_id;
3211
3212
2/2
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✓ Branch 1 taken 88 times.
447 if (track->flag_default)
3213 359 st->disposition |= AV_DISPOSITION_DEFAULT;
3214
2/2
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✓ Branch 1 taken 443 times.
447 if (track->flag_forced)
3215 4 st->disposition |= AV_DISPOSITION_FORCED;
3216
2/2
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✓ Branch 1 taken 445 times.
447 if (track->flag_comment)
3217 2 st->disposition |= AV_DISPOSITION_COMMENT;
3218
2/2
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✓ Branch 1 taken 439 times.
447 if (track->flag_hearingimpaired)
3219 8 st->disposition |= AV_DISPOSITION_HEARING_IMPAIRED;
3220
2/2
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✓ Branch 1 taken 445 times.
447 if (track->flag_visualimpaired)
3221 2 st->disposition |= AV_DISPOSITION_VISUAL_IMPAIRED;
3222
2/2
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✓ Branch 1 taken 443 times.
447 if (track->flag_original.count > 0)
3223 4 st->disposition |= track->flag_original.el.u ? AV_DISPOSITION_ORIGINAL
3224
2/2
✓ Branch 0 taken 2 times.
✓ Branch 1 taken 2 times.
4 : AV_DISPOSITION_DUB;
3225
3226
1/2
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✓ Branch 1 taken 447 times.
447 if (key_id_base64) {
3227 /* export encryption key id as base64 metadata tag */
3228 av_dict_set(&st->metadata, "enc_key_id", key_id_base64,
3229 AV_DICT_DONT_STRDUP_VAL);
3230 }
3231
3232
2/2
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✓ Branch 1 taken 124 times.
447 if (strcmp(track->language, "und"))
3233 323 av_dict_set(&st->metadata, "language", track->language, 0);
3234 447 av_dict_set(&st->metadata, "title", track->name, 0);
3235
3236
1/2
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✓ Branch 1 taken 447 times.
447 if (track->time_scale < 0.01) {
3237 av_log(matroska->ctx, AV_LOG_WARNING,
3238 "Track TimestampScale too small %f, assuming 1.0.\n",
3239 track->time_scale);
3240 track->time_scale = 1.0;
3241 }
3242
3243
1/2
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✓ Branch 1 taken 447 times.
447 if (matroska->time_scale * track->time_scale > UINT_MAX)
3244 return AVERROR_INVALIDDATA;
3245
3246 447 avpriv_set_pts_info(st, 64, matroska->time_scale * track->time_scale,
3247 1000 * 1000 * 1000); /* 64 bit pts in ns */
3248
3249 /* convert the delay from ns to the track timebase */
3250 447 track->codec_delay_in_track_tb = av_rescale_q(track->codec_delay,
3251 447 (AVRational){ 1, 1000000000 },
3252 st->time_base);
3253
3254 447 type = track->type;
3255
2/2
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✓ Branch 1 taken 439 times.
447 if (par->codec_id == AV_CODEC_ID_WEBVTT)
3256 8 type = MATROSKA_TRACK_TYPE_SUBTITLE;
3257
3/4
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✓ Branch 1 taken 339 times.
✓ Branch 2 taken 24 times.
✗ Branch 3 not taken.
447 switch (type) {
3258 84 case MATROSKA_TRACK_TYPE_AUDIO:
3259 84 ret = mka_parse_audio(track, st, par, matroska,
3260 s, &extradata_offset);
3261
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 84 times.
84 if (ret < 0)
3262 return ret;
3263
1/2
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✓ Branch 1 taken 84 times.
84 if (ret == SKIP_TRACK)
3264 continue;
3265 84 break;
3266 339 case MATROSKA_TRACK_TYPE_VIDEO:
3267 339 ret = mkv_parse_video(track, st, par, matroska, &extradata_offset);
3268
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 339 times.
339 if (ret < 0)
3269 return ret;
3270 339 break;
3271 24 case MATROSKA_TRACK_TYPE_SUBTITLE:
3272 24 ret = mkv_parse_subtitle_codec(track, st, par, matroska);
3273
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 24 times.
24 if (ret < 0)
3274 return ret;
3275 24 par->codec_type = AVMEDIA_TYPE_SUBTITLE;
3276
3277
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 24 times.
24 if (track->flag_textdescriptions)
3278 st->disposition |= AV_DISPOSITION_DESCRIPTIONS;
3279 24 break;
3280 }
3281
3282
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 447 times.
447 if (par->codec_id == AV_CODEC_ID_NONE)
3283 av_log(matroska->ctx, AV_LOG_INFO,
3284 "Unknown/unsupported AVCodecID %s.\n", track->codec_id);
3285
3286
4/4
✓ Branch 0 taken 440 times.
✓ Branch 1 taken 7 times.
✓ Branch 2 taken 138 times.
✓ Branch 3 taken 302 times.
447 if (!par->extradata && track->codec_priv.size > extradata_offset) {
3287 138 const uint8_t *src = track->codec_priv.data + extradata_offset;
3288 138 unsigned extra_size = track->codec_priv.size - extradata_offset;
3289 138 ret = ff_alloc_extradata(par, extra_size);
3290
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 138 times.
138 if (ret < 0)
3291 return ret;
3292 138 memcpy(par->extradata, src, extra_size);
3293 }
3294
3295 447 ret = mkv_parse_block_addition_mappings(s, st, track);
3296
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 447 times.
447 if (ret < 0)
3297 return ret;
3298 }
3299
3300 372 return 0;
3301 }
3302
3303 372 static int matroska_read_header(AVFormatContext *s)
3304 {
3305 372 FFFormatContext *const si = ffformatcontext(s);
3306 372 MatroskaDemuxContext *matroska = s->priv_data;
3307 372 EbmlList *attachments_list = &matroska->attachments;
3308 372 EbmlList *chapters_list = &matroska->chapters;
3309 MatroskaAttachment *attachments;
3310 MatroskaChapter *chapters;
3311 372 uint64_t max_start = 0;
3312 int64_t pos;
3313 372 Ebml ebml = { 0 };
3314 int i, j, res;
3315
3316 372 matroska->ctx = s;
3317 372 matroska->cues_parsing_deferred = 1;
3318
3319 /* First read the EBML header. */
3320
2/4
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✗ Branch 2 not taken.
✗ Branch 3 not taken.
✓ Branch 4 taken 372 times.
372 if (ebml_parse(matroska, ebml_syntax, &ebml) || !ebml.doctype) {
3321 av_log(matroska->ctx, AV_LOG_ERROR, "EBML header parsing failed\n");
3322 ebml_free(ebml_syntax, &ebml);
3323 return AVERROR_INVALIDDATA;
3324 }
3325
1/2
✓ Branch 0 taken 372 times.
✗ Branch 1 not taken.
372 if (ebml.version > EBML_VERSION ||
3326
1/2
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✗ Branch 1 not taken.
372 ebml.max_size > sizeof(uint64_t) ||
3327
1/2
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✗ Branch 1 not taken.
372 ebml.id_length > sizeof(uint32_t) ||
3328
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 372 times.
372 ebml.doctype_version > 3) {
3329 avpriv_report_missing_feature(matroska->ctx,
3330 "EBML version %"PRIu64", doctype %s, doc version %"PRIu64,
3331 ebml.version, ebml.doctype, ebml.doctype_version);
3332 ebml_free(ebml_syntax, &ebml);
3333 return AVERROR_PATCHWELCOME;
3334
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 372 times.
372 } else if (ebml.doctype_version == 3) {
3335 av_log(matroska->ctx, AV_LOG_WARNING,
3336 "EBML header using unsupported features\n"
3337 "(EBML version %"PRIu64", doctype %s, doc version %"PRIu64")\n",
3338 ebml.version, ebml.doctype, ebml.doctype_version);
3339 }
3340
1/2
✓ Branch 0 taken 640 times.
✗ Branch 1 not taken.
640 for (i = 0; i < FF_ARRAY_ELEMS(matroska_doctypes); i++)
3341
2/2
✓ Branch 0 taken 372 times.
✓ Branch 1 taken 268 times.
640 if (!strcmp(ebml.doctype, matroska_doctypes[i]))
3342 372 break;
3343
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 372 times.
372 if (i >= FF_ARRAY_ELEMS(matroska_doctypes)) {
3344 av_log(s, AV_LOG_WARNING, "Unknown EBML doctype '%s'\n", ebml.doctype);
3345 if (matroska->ctx->error_recognition & AV_EF_EXPLODE) {
3346 ebml_free(ebml_syntax, &ebml);
3347 return AVERROR_INVALIDDATA;
3348 }
3349 }
3350 372 matroska->is_webm = !strcmp(ebml.doctype, "webm");
3351
3352 372 ebml_free(ebml_syntax, &ebml);
3353
3354 372 matroska->pkt = si->parse_pkt;
3355
3356 /* The next thing is a segment. */
3357 372 pos = avio_tell(matroska->ctx->pb);
3358 372 res = ebml_parse(matroska, matroska_segments, matroska);
3359 // Try resyncing until we find an EBML_STOP type element.
3360
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 372 times.
372 while (res != 1) {
3361 res = matroska_resync(matroska, pos);
3362 if (res < 0)
3363 return res;
3364 pos = avio_tell(matroska->ctx->pb);
3365 res = ebml_parse(matroska, matroska_segment, matroska);
3366 if (res == AVERROR(EIO)) // EOF is translated to EIO, this exists the loop on EOF
3367 return res;
3368 }
3369 /* Set data_offset as it might be needed later by seek_frame_generic. */
3370
2/2
✓ Branch 0 taken 368 times.
✓ Branch 1 taken 4 times.
372 if (matroska->current_id == MATROSKA_ID_CLUSTER)
3371 368 si->data_offset = avio_tell(matroska->ctx->pb) - 4;
3372 372 matroska_execute_seekhead(matroska);
3373
3374
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 372 times.
372 if (!matroska->time_scale)
3375 matroska->time_scale = 1000000;
3376
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 372 times.
372 if (isnan(matroska->duration))
3377 matroska->duration = 0;
3378
2/2
✓ Branch 0 taken 361 times.
✓ Branch 1 taken 11 times.
372 if (matroska->duration)
3379 361 matroska->ctx->duration = matroska->duration * matroska->time_scale *
3380 361 1000 / AV_TIME_BASE;
3381 372 av_dict_set(&s->metadata, "title", matroska->title, 0);
3382 372 av_dict_set(&s->metadata, "encoder", matroska->muxingapp, 0);
3383
3384
2/2
✓ Branch 0 taken 18 times.
✓ Branch 1 taken 354 times.
372 if (matroska->date_utc.size == 8)
3385 18 matroska_metadata_creation_time(&s->metadata, AV_RB64(matroska->date_utc.data));
3386
3387 372 res = matroska_parse_tracks(s);
3388
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 372 times.
372 if (res < 0)
3389 return res;
3390
3391 372 attachments = attachments_list->elem;
3392
2/2
✓ Branch 0 taken 4 times.
✓ Branch 1 taken 372 times.
376 for (j = 0; j < attachments_list->nb_elem; j++) {
3393
2/4
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✗ Branch 1 not taken.
✓ Branch 2 taken 4 times.
✗ Branch 3 not taken.
4 if (!(attachments[j].filename && attachments[j].mime &&
3394
2/4
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✗ Branch 1 not taken.
✗ Branch 2 not taken.
✓ Branch 3 taken 4 times.
4 attachments[j].bin.data && attachments[j].bin.size > 0)) {
3395 av_log(matroska->ctx, AV_LOG_ERROR, "incomplete attachment\n");
3396 } else {
3397 4 AVStream *st = avformat_new_stream(s, NULL);
3398
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 4 times.
4 if (!st)
3399 break;
3400 4 av_dict_set(&st->metadata, "filename", attachments[j].filename, 0);
3401 4 av_dict_set(&st->metadata, "mimetype", attachments[j].mime, 0);
3402
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 4 times.
4 if (attachments[j].description)
3403 av_dict_set(&st->metadata, "title", attachments[j].description, 0);
3404 4 st->codecpar->codec_id = AV_CODEC_ID_NONE;
3405
3406
2/2
✓ Branch 0 taken 16 times.
✓ Branch 1 taken 4 times.
20 for (i = 0; mkv_image_mime_tags[i].id != AV_CODEC_ID_NONE; i++) {
3407
1/2
✗ Branch 1 not taken.
✓ Branch 2 taken 16 times.
16 if (av_strstart(attachments[j].mime, mkv_image_mime_tags[i].str, NULL)) {
3408 st->codecpar->codec_id = mkv_image_mime_tags[i].id;
3409 break;
3410 }
3411 }
3412
3413 4 attachments[j].stream = st;
3414
3415
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 4 times.
4 if (st->codecpar->codec_id != AV_CODEC_ID_NONE) {
3416 res = ff_add_attached_pic(s, st, NULL, &attachments[j].bin.buf, 0);
3417 if (res < 0)
3418 return res;
3419 } else {
3420 4 st->codecpar->codec_type = AVMEDIA_TYPE_ATTACHMENT;
3421
1/2
✗ Branch 1 not taken.
✓ Branch 2 taken 4 times.
4 if (ff_alloc_extradata(st->codecpar, attachments[j].bin.size))
3422 break;
3423 4 memcpy(st->codecpar->extradata, attachments[j].bin.data,
3424 4 attachments[j].bin.size);
3425
3426
2/2
✓ Branch 0 taken 16 times.
✓ Branch 1 taken 4 times.
20 for (i = 0; mkv_mime_tags[i].id != AV_CODEC_ID_NONE; i++) {
3427
1/2
✗ Branch 1 not taken.
✓ Branch 2 taken 16 times.
16 if (av_strstart(attachments[j].mime, mkv_mime_tags[i].str, NULL)) {
3428 st->codecpar->codec_id = mkv_mime_tags[i].id;
3429 break;
3430 }
3431 }
3432 }
3433 }
3434 }
3435
3436 372 chapters = chapters_list->elem;
3437
2/2
✓ Branch 0 taken 14 times.
✓ Branch 1 taken 372 times.
386 for (i = 0; i < chapters_list->nb_elem; i++)
3438
4/6
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✗ Branch 1 not taken.
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✓ Branch 4 taken 4 times.
✓ Branch 5 taken 10 times.
14 if (chapters[i].start != AV_NOPTS_VALUE && chapters[i].uid &&
3439
1/2
✓ Branch 0 taken 4 times.
✗ Branch 1 not taken.
4 (max_start == 0 || chapters[i].start > max_start)) {
3440 28 chapters[i].chapter =
3441 14 avpriv_new_chapter(s, chapters[i].uid,
3442 14 (AVRational) { 1, 1000000000 },
3443 14 chapters[i].start, chapters[i].end,
3444 14 chapters[i].title);
3445 14 max_start = chapters[i].start;
3446 }
3447
3448 372 matroska_add_index_entries(matroska);
3449
3450 372 matroska_convert_tags(s);
3451
3452 372 return 0;
3453 }
3454
3455 /*
3456 * Put one packet in an application-supplied AVPacket struct.
3457 * Returns 0 on success or -1 on failure.
3458 */
3459 60279 static int matroska_deliver_packet(MatroskaDemuxContext *matroska,
3460 AVPacket *pkt)
3461 {
3462
2/2
✓ Branch 0 taken 29517 times.
✓ Branch 1 taken 30762 times.
60279 if (matroska->queue.head) {
3463 29517 MatroskaTrack *tracks = matroska->tracks.elem;
3464 MatroskaTrack *track;
3465
3466 29517 avpriv_packet_list_get(&matroska->queue, pkt);
3467 29517 track = &tracks[pkt->stream_index];
3468
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 29517 times.
29517 if (track->has_palette) {
3469 uint8_t *pal = av_packet_new_side_data(pkt, AV_PKT_DATA_PALETTE, AVPALETTE_SIZE);
3470 if (!pal) {
3471 av_log(matroska->ctx, AV_LOG_ERROR, "Cannot append palette to packet\n");
3472 } else {
3473 memcpy(pal, track->palette, AVPALETTE_SIZE);
3474 }
3475 track->has_palette = 0;
3476 }
3477 29517 return 0;
3478 }
3479
3480 30762 return -1;
3481 }
3482
3483 /*
3484 * Free all packets in our internal queue.
3485 */
3486 1210 static void matroska_clear_queue(MatroskaDemuxContext *matroska)
3487 {
3488 1210 avpriv_packet_list_free(&matroska->queue);
3489 1210 }
3490
3491 29887 static int matroska_parse_laces(MatroskaDemuxContext *matroska, uint8_t **buf,
3492 int size, int type, AVIOContext *pb,
3493 uint32_t lace_size[256], int *laces)
3494 {
3495 int n;
3496 29887 uint8_t *data = *buf;
3497
3498
2/2
✓ Branch 0 taken 29812 times.
✓ Branch 1 taken 75 times.
29887 if (!type) {
3499 29812 *laces = 1;
3500 29812 lace_size[0] = size;
3501 29812 return 0;
3502 }
3503
3504
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 75 times.
75 if (size <= 0)
3505 return AVERROR_INVALIDDATA;
3506
3507 75 *laces = *data + 1;
3508 75 data += 1;
3509 75 size -= 1;
3510
3511
3/4
✓ Branch 0 taken 4 times.
✓ Branch 1 taken 17 times.
✓ Branch 2 taken 54 times.
✗ Branch 3 not taken.
75 switch (type) {
3512 4 case 0x1: /* Xiph lacing */
3513 {
3514 uint8_t temp;
3515 4 uint32_t total = 0;
3516
2/2
✓ Branch 0 taken 23 times.
✓ Branch 1 taken 4 times.
27 for (n = 0; n < *laces - 1; n++) {
3517 23 lace_size[n] = 0;
3518
3519 do {
3520
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 25 times.
25 if (size <= total)
3521 return AVERROR_INVALIDDATA;
3522 25 temp = *data;
3523 25 total += temp;
3524 25 lace_size[n] += temp;
3525 25 data += 1;
3526 25 size -= 1;
3527
2/2
✓ Branch 0 taken 2 times.
✓ Branch 1 taken 23 times.
25 } while (temp == 0xff);
3528 }
3529
1/2
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✓ Branch 1 taken 4 times.
4 if (size < total)
3530 return AVERROR_INVALIDDATA;
3531
3532 4 lace_size[n] = size - total;
3533 4 break;
3534 }
3535
3536 17 case 0x2: /* fixed-size lacing */
3537
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 17 times.
17 if (size % (*laces))
3538 return AVERROR_INVALIDDATA;
3539
2/2
✓ Branch 0 taken 81 times.
✓ Branch 1 taken 17 times.
98 for (n = 0; n < *laces; n++)
3540 81 lace_size[n] = size / *laces;
3541 17 break;
3542
3543 54 case 0x3: /* EBML lacing */
3544 {
3545 uint64_t num;
3546 uint64_t total;
3547 int offset;
3548
3549 54 avio_skip(pb, 4);
3550
3551 54 n = ebml_read_num(matroska, pb, 8, &num, 1);
3552
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 54 times.
54 if (n < 0)
3553 return n;
3554
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 54 times.
54 if (num > INT_MAX)
3555 return AVERROR_INVALIDDATA;
3556
3557 54 total = lace_size[0] = num;
3558 54 offset = n;
3559
2/2
✓ Branch 0 taken 236 times.
✓ Branch 1 taken 54 times.
290 for (n = 1; n < *laces - 1; n++) {
3560 int64_t snum;
3561 int r;
3562 236 r = matroska_ebmlnum_sint(matroska, pb, &snum);
3563
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 236 times.
236 if (r < 0)
3564 return r;
3565
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 236 times.
236 if (lace_size[n - 1] + snum > (uint64_t)INT_MAX)
3566 return AVERROR_INVALIDDATA;
3567
3568 236 lace_size[n] = lace_size[n - 1] + snum;
3569 236 total += lace_size[n];
3570 236 offset += r;
3571 }
3572 54 data += offset;
3573 54 size -= offset;
3574
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 54 times.
54 if (size < total)
3575 return AVERROR_INVALIDDATA;
3576
3577 54 lace_size[*laces - 1] = size - total;
3578 54 break;
3579 }
3580 }
3581
3582 75 *buf = data;
3583
3584 75 return 0;
3585 }
3586
3587 static int matroska_parse_rm_audio(MatroskaDemuxContext *matroska,
3588 MatroskaTrack *track, AVStream *st,
3589 uint8_t *data, int size, uint64_t timecode,
3590 int64_t pos)
3591 {
3592 const int a = st->codecpar->block_align;
3593 const int sps = track->audio.sub_packet_size;
3594 const int cfs = track->audio.coded_framesize;
3595 const int h = track->audio.sub_packet_h;
3596 const int w = track->audio.frame_size;
3597 int y = track->audio.sub_packet_cnt;
3598 int x;
3599
3600 if (!track->audio.pkt_cnt) {
3601 if (track->audio.sub_packet_cnt == 0)
3602 track->audio.buf_timecode = timecode;
3603 if (st->codecpar->codec_id == AV_CODEC_ID_RA_288) {
3604 if (size < cfs * h / 2) {
3605 av_log(matroska->ctx, AV_LOG_ERROR,
3606 "Corrupt int4 RM-style audio packet size\n");
3607 return AVERROR_INVALIDDATA;
3608 }
3609 for (x = 0; x < h / 2; x++)
3610 memcpy(track->audio.buf + x * 2 * w + y * cfs,
3611 data + x * cfs, cfs);
3612 } else if (st->codecpar->codec_id == AV_CODEC_ID_SIPR) {
3613 if (size < w) {
3614 av_log(matroska->ctx, AV_LOG_ERROR,
3615 "Corrupt sipr RM-style audio packet size\n");
3616 return AVERROR_INVALIDDATA;
3617 }
3618 memcpy(track->audio.buf + y * w, data, w);
3619 } else {
3620 if (size < w) {
3621 av_log(matroska->ctx, AV_LOG_ERROR,
3622 "Corrupt generic RM-style audio packet size\n");
3623 return AVERROR_INVALIDDATA;
3624 }
3625 for (x = 0; x < w / sps; x++)
3626 memcpy(track->audio.buf +
3627 sps * (h * x + ((h + 1) / 2) * (y & 1) + (y >> 1)),
3628 data + x * sps, sps);
3629 }
3630
3631 if (++track->audio.sub_packet_cnt >= h) {
3632 if (st->codecpar->codec_id == AV_CODEC_ID_SIPR)
3633 ff_rm_reorder_sipr_data(track->audio.buf, h, w);
3634 track->audio.sub_packet_cnt = 0;
3635 track->audio.pkt_cnt = h * w / a;
3636 }
3637 }
3638
3639 while (track->audio.pkt_cnt) {
3640 int ret;
3641 AVPacket *pkt = matroska->pkt;
3642
3643 ret = av_new_packet(pkt, a);
3644 if (ret < 0) {
3645 return ret;
3646 }
3647 memcpy(pkt->data,
3648 track->audio.buf + a * (h * w / a - track->audio.pkt_cnt--),
3649 a);
3650 pkt->pts = track->audio.buf_timecode;
3651 track->audio.buf_timecode = AV_NOPTS_VALUE;
3652 pkt->pos = pos;
3653 pkt->stream_index = st->index;
3654 ret = avpriv_packet_list_put(&matroska->queue, pkt, NULL, 0);
3655 if (ret < 0) {
3656 av_packet_unref(pkt);
3657 return AVERROR(ENOMEM);
3658 }
3659 }
3660
3661 return 0;
3662 }
3663
3664 /* reconstruct full wavpack blocks from mangled matroska ones */
3665 24 static int matroska_parse_wavpack(MatroskaTrack *track,
3666 uint8_t **data, int *size)
3667 {
3668 24 uint8_t *dst = NULL;
3669 24 uint8_t *src = *data;
3670 24 int dstlen = 0;
3671 24 int srclen = *size;
3672 uint32_t samples;
3673 uint16_t ver;
3674 24 int ret, offset = 0;
3675
3676
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 24 times.
24 if (srclen < 12)
3677 return AVERROR_INVALIDDATA;
3678
3679 av_assert1(track->stream->codecpar->extradata_size >= 2);
3680 24 ver = AV_RL16(track->stream->codecpar->extradata);
3681
3682 24 samples = AV_RL32(src);
3683 24 src += 4;
3684 24 srclen -= 4;
3685
3686
2/2
✓ Branch 0 taken 112 times.
✓ Branch 1 taken 24 times.
136 while (srclen >= 8) {
3687 int multiblock;
3688 uint32_t blocksize;
3689 uint8_t *tmp;
3690
3691 112 uint32_t flags = AV_RL32(src);
3692 112 uint32_t crc = AV_RL32(src + 4);
3693 112 src += 8;
3694 112 srclen -= 8;
3695
3696 112 multiblock = (flags & 0x1800) != 0x1800;
3697
2/2
✓ Branch 0 taken 110 times.
✓ Branch 1 taken 2 times.
112 if (multiblock) {
3698
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 110 times.
110 if (srclen < 4) {
3699 ret = AVERROR_INVALIDDATA;
3700 goto fail;
3701 }
3702 110 blocksize = AV_RL32(src);
3703 110 src += 4;
3704 110 srclen -= 4;
3705 } else
3706 2 blocksize = srclen;
3707
3708
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 112 times.
112 if (blocksize > srclen) {
3709 ret = AVERROR_INVALIDDATA;
3710 goto fail;
3711 }
3712
3713 112 tmp = av_realloc(dst, dstlen + blocksize + 32 + AV_INPUT_BUFFER_PADDING_SIZE);
3714
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 112 times.
112 if (!tmp) {
3715 ret = AVERROR(ENOMEM);
3716 goto fail;
3717 }
3718 112 dst = tmp;
3719 112 dstlen += blocksize + 32;
3720
3721 112 AV_WL32(dst + offset, MKTAG('w', 'v', 'p', 'k')); // tag
3722 112 AV_WL32(dst + offset + 4, blocksize + 24); // blocksize - 8
3723 112 AV_WL16(dst + offset + 8, ver); // version
3724 112 AV_WL16(dst + offset + 10, 0); // track/index_no
3725 112 AV_WL32(dst + offset + 12, 0); // total samples
3726 112 AV_WL32(dst + offset + 16, 0); // block index
3727 112 AV_WL32(dst + offset + 20, samples); // number of samples
3728 112 AV_WL32(dst + offset + 24, flags); // flags
3729 112 AV_WL32(dst + offset + 28, crc); // crc
3730 112 memcpy(dst + offset + 32, src, blocksize); // block data
3731
3732 112 src += blocksize;
3733 112 srclen -= blocksize;
3734 112 offset += blocksize + 32;
3735 }
3736
3737 24 memset(dst + dstlen, 0, AV_INPUT_BUFFER_PADDING_SIZE);
3738
3739 24 *data = dst;
3740 24 *size = dstlen;
3741
3742 24 return 0;
3743
3744 fail:
3745 av_freep(&dst);
3746 return ret;
3747 }
3748
3749 11 static int matroska_parse_prores(MatroskaTrack *track,
3750 uint8_t **data, int *size)
3751 {
3752 uint8_t *dst;
3753 11 int dstlen = *size + 8;
3754
3755 11 dst = av_malloc(dstlen + AV_INPUT_BUFFER_PADDING_SIZE);
3756
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 11 times.
11 if (!dst)
3757 return AVERROR(ENOMEM);
3758
3759 11 AV_WB32(dst, dstlen);
3760 11 AV_WB32(dst + 4, MKBETAG('i', 'c', 'p', 'f'));
3761 11 memcpy(dst + 8, *data, dstlen - 8);
3762 11 memset(dst + dstlen, 0, AV_INPUT_BUFFER_PADDING_SIZE);
3763
3764 11 *data = dst;
3765 11 *size = dstlen;
3766
3767 11 return 0;
3768 }
3769
3770 90 static int matroska_parse_webvtt(MatroskaDemuxContext *matroska,
3771 MatroskaTrack *track,
3772 AVStream *st,
3773 uint8_t *data, int data_len,
3774 uint64_t timecode,
3775 uint64_t duration,
3776 int64_t pos)
3777 {
3778 90 AVPacket *pkt = matroska->pkt;
3779 uint8_t *id, *settings, *text, *buf;
3780 int id_len, settings_len, text_len;
3781 uint8_t *p, *q;
3782 int err;
3783
3784
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 90 times.
90 if (data_len <= 0)
3785 return AVERROR_INVALIDDATA;
3786
3787 90 p = data;
3788 90 q = data + data_len;
3789
3790 90 id = p;
3791 90 id_len = -1;
3792
1/2
✓ Branch 0 taken 192 times.
✗ Branch 1 not taken.
192 while (p < q) {
3793
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') {
3794 90 id_len = p - id;
3795
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 90 times.
90 if (*p == '\r')
3796 p++;
3797 90 break;
3798 }
3799 102 p++;
3800 }
3801
3802
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')
3803 return AVERROR_INVALIDDATA;
3804 90 p++;
3805
3806 90 settings = p;
3807 90 settings_len = -1;
3808
1/2
✓ Branch 0 taken 546 times.
✗ Branch 1 not taken.
546 while (p < q) {
3809
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') {
3810 90 settings_len = p - settings;
3811
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 90 times.
90 if (*p == '\r')
3812 p++;
3813 90 break;
3814 }
3815 456 p++;
3816 }
3817
3818
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')
3819 return AVERROR_INVALIDDATA;
3820 90 p++;
3821
3822 90 text = p;
3823 90 text_len = q - p;
3824
1/2
✓ Branch 0 taken 90 times.
✗ Branch 1 not taken.
90 while (text_len > 0) {
3825 90 const int len = text_len - 1;
3826 90 const uint8_t c = p[len];
3827
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')
3828 90 break;
3829 text_len = len;
3830 }
3831
3832 90 err = av_new_packet(pkt, text_len);
3833
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 90 times.
90 if (err < 0) {
3834 return err;
3835 }
3836
3837 90 memcpy(pkt->data, text, text_len);
3838
3839
2/2
✓ Branch 0 taken 12 times.
✓ Branch 1 taken 78 times.
90 if (id_len > 0) {
3840 12 buf = av_packet_new_side_data(pkt,
3841 AV_PKT_DATA_WEBVTT_IDENTIFIER,
3842 id_len);
3843
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 12 times.
12 if (!buf) {
3844 av_packet_unref(pkt);
3845 return AVERROR(ENOMEM);
3846 }
3847 12 memcpy(buf, id, id_len);
3848 }
3849
3850
2/2
✓ Branch 0 taken 24 times.
✓ Branch 1 taken 66 times.
90 if (settings_len > 0) {
3851 24 buf = av_packet_new_side_data(pkt,
3852 AV_PKT_DATA_WEBVTT_SETTINGS,
3853 settings_len);
3854
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 24 times.
24 if (!buf) {
3855 av_packet_unref(pkt);
3856 return AVERROR(ENOMEM);
3857 }
3858 24 memcpy(buf, settings, settings_len);
3859 }
3860
3861 // Do we need this for subtitles?
3862 // pkt->flags = AV_PKT_FLAG_KEY;
3863
3864 90 pkt->stream_index = st->index;
3865 90 pkt->pts = timecode;
3866
3867 // Do we need this for subtitles?
3868 // pkt->dts = timecode;
3869
3870 90 pkt->duration = duration;
3871 90 pkt->pos = pos;
3872
3873 90 err = avpriv_packet_list_put(&matroska->queue, pkt, NULL, 0);
3874
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 90 times.
90 if (err < 0) {
3875 av_packet_unref(pkt);
3876 return AVERROR(ENOMEM);
3877 }
3878
3879 90 return 0;
3880 }
3881
3882 136 static int matroska_parse_block_additional(MatroskaDemuxContext *matroska,
3883 MatroskaTrack *track, AVPacket *pkt,
3884 const uint8_t *data, int size, uint64_t id)
3885 {
3886 136 const EbmlList *mappings_list = &track->block_addition_mappings;
3887 136 MatroskaBlockAdditionMapping *mappings = mappings_list->elem, *mapping = NULL;
3888 uint8_t *side_data;
3889 int res;
3890
3891
4/6
✓ Branch 0 taken 12 times.
✓ Branch 1 taken 124 times.
✓ Branch 2 taken 12 times.
✗ Branch 3 not taken.
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✓ Branch 5 taken 12 times.
136 if (!matroska->is_webm && track->max_block_additional_id && id > track->max_block_additional_id) {
3892 int strict = matroska->ctx->strict_std_compliance >= FF_COMPLIANCE_STRICT;
3893 av_log(matroska->ctx, strict ? AV_LOG_ERROR : AV_LOG_WARNING,
3894 "BlockAddID %"PRIu64" is higher than the reported MaxBlockAdditionID %"PRIu64" "
3895 "for Track with TrackNumber %"PRIu64"\n", id, track->max_block_additional_id,
3896 track->num);
3897 if (strict)
3898 return AVERROR_INVALIDDATA;
3899 }
3900
3901
2/2
✓ Branch 0 taken 2 times.
✓ Branch 1 taken 134 times.
136 for (int i = 0; i < mappings_list->nb_elem; i++) {
3902
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 2 times.
2 if (id != mappings[i].value)
3903 continue;
3904 2 mapping = &mappings[i];
3905 2 break;
3906 }
3907
3908
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) {
3909 av_log(matroska->ctx, AV_LOG_WARNING, "BlockAddID %"PRIu64" has no mapping. Skipping\n", id);
3910 return 0;
3911 }
3912
3913
3/4
✓ Branch 0 taken 2 times.
✓ Branch 1 taken 134 times.
✓ Branch 2 taken 2 times.
✗ Branch 3 not taken.
136 if (mapping && mapping->type)
3914 2 id = mapping->type;
3915
3916
2/2
✓ Branch 0 taken 6 times.
✓ Branch 1 taken 130 times.
136 switch (id) {
3917 6 case MATROSKA_BLOCK_ADD_ID_TYPE_ITU_T_T35: {
3918 GetByteContext bc;
3919 int country_code, provider_code;
3920 int provider_oriented_code, application_identifier;
3921 size_t hdrplus_size;
3922 AVDynamicHDRPlus *hdrplus;
3923
3924
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 6 times.
6 if (size < 6)
3925 break; //ignore
3926
3927 6 bytestream2_init(&bc, data, size);
3928
3929 /* ITU-T T.35 metadata */
3930 6 country_code = bytestream2_get_byteu(&bc);
3931 6 provider_code = bytestream2_get_be16u(&bc);
3932
3933
2/4
✓ Branch 0 taken 6 times.
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✓ Branch 2 taken 6 times.
✗ Branch 3 not taken.
6 if (country_code != ITU_T_T35_COUNTRY_CODE_US ||
3934 provider_code != ITU_T_T35_PROVIDER_CODE_SMTPE)
3935 break; // ignore
3936
3937 6 provider_oriented_code = bytestream2_get_be16u(&bc);
3938 6 application_identifier = bytestream2_get_byteu(&bc);
3939
3940
2/4
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✗ Branch 1 not taken.
✓ Branch 2 taken 6 times.
✗ Branch 3 not taken.
6 if (provider_oriented_code != 1 || application_identifier != 4)
3941 break; // ignore
3942
3943 6 hdrplus = av_dynamic_hdr_plus_alloc(&hdrplus_size);
3944
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 6 times.
6 if (!hdrplus)
3945 6 return AVERROR(ENOMEM);
3946
3947
1/2
✓ Branch 1 taken 6 times.
✗ Branch 2 not taken.
6 if ((res = av_dynamic_hdr_plus_from_t35(hdrplus, bc.buffer,
3948
1/2
✗ Branch 1 not taken.
✓ Branch 2 taken 6 times.
12 bytestream2_get_bytes_left(&bc))) < 0 ||
3949 6 (res = av_packet_add_side_data(pkt, AV_PKT_DATA_DYNAMIC_HDR10_PLUS,
3950 (uint8_t *)hdrplus, hdrplus_size)) < 0) {
3951 av_free(hdrplus);
3952 return res;
3953 }
3954
3955 6 return 0;
3956 }
3957 130 default:
3958 130 break;
3959 }
3960
3961 130 side_data = av_packet_new_side_data(pkt, AV_PKT_DATA_MATROSKA_BLOCKADDITIONAL,
3962 size + (size_t)8);
3963
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 130 times.
130 if (!side_data)
3964 return AVERROR(ENOMEM);
3965
3966 130 AV_WB64(side_data, id);
3967 130 memcpy(side_data + 8, data, size);
3968
3969 130 return 0;
3970 }
3971
3972 30174 static int matroska_parse_frame(MatroskaDemuxContext *matroska,
3973 MatroskaTrack *track, AVStream *st,
3974 AVBufferRef *buf, uint8_t *data, int pkt_size,
3975 uint64_t timecode, uint64_t lace_duration,
3976 int64_t pos, int is_keyframe,
3977 MatroskaBlockMore *blockmore, int nb_blockmore,
3978 int64_t discard_padding)
3979 {
3980 30174 uint8_t *pkt_data = data;
3981 30174 int res = 0;
3982 30174 AVPacket *pkt = matroska->pkt;
3983
3984
2/2
✓ Branch 0 taken 24 times.
✓ Branch 1 taken 30150 times.
30174 if (st->codecpar->codec_id == AV_CODEC_ID_WAVPACK) {
3985 24 res = matroska_parse_wavpack(track, &pkt_data, &pkt_size);
3986
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 24 times.
24 if (res < 0) {
3987 av_log(matroska->ctx, AV_LOG_ERROR,
3988 "Error parsing a wavpack block.\n");
3989 goto fail;
3990 }
3991
2/2
✓ Branch 0 taken 2 times.
✓ Branch 1 taken 22 times.
24 if (!buf)
3992 2 av_freep(&data);
3993 24 buf = NULL;
3994 }
3995
3996
2/2
✓ Branch 0 taken 13 times.
✓ Branch 1 taken 30161 times.
30174 if (st->codecpar->codec_id == AV_CODEC_ID_PRORES &&
3997
2/2
✓ Branch 0 taken 11 times.
✓ Branch 1 taken 2 times.
13 AV_RB32(pkt_data + 4) != MKBETAG('i', 'c', 'p', 'f')) {
3998 11 res = matroska_parse_prores(track, &pkt_data, &pkt_size);
3999
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 11 times.
11 if (res < 0) {
4000 av_log(matroska->ctx, AV_LOG_ERROR,
4001 "Error parsing a prores block.\n");
4002 goto fail;
4003 }
4004
2/2
✓ Branch 0 taken 2 times.
✓ Branch 1 taken 9 times.
11 if (!buf)
4005 2 av_freep(&data);
4006 11 buf = NULL;
4007 }
4008
4009
1/4
✗ Branch 0 not taken.
✓ Branch 1 taken 30174 times.
✗ Branch 2 not taken.
✗ Branch 3 not taken.
30174 if (!pkt_size && !nb_blockmore)
4010 goto no_output;
4011
4012
5/6
✓ Branch 0 taken 26950 times.
✓ Branch 1 taken 3224 times.
✓ Branch 2 taken 12 times.
✓ Branch 3 taken 26938 times.
✗ Branch 4 not taken.
✓ Branch 5 taken 12 times.
30174 if (!matroska->is_webm && nb_blockmore && !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 "Unexpected BlockAdditions found in a Block from Track with TrackNumber %"PRIu64" "
4016 "where MaxBlockAdditionID is 0\n", track->num);
4017 if (strict) {
4018 res = AVERROR_INVALIDDATA;
4019 goto fail;
4020 }
4021 }
4022
4023
2/2
✓ Branch 0 taken 112 times.
✓ Branch 1 taken 30062 times.
30174 if (!buf)
4024 112 pkt->buf = av_buffer_create(pkt_data, pkt_size + AV_INPUT_BUFFER_PADDING_SIZE,
4025 NULL, NULL, 0);
4026 else
4027 30062 pkt->buf = av_buffer_ref(buf);
4028
4029
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 30174 times.
30174 if (!pkt->buf) {
4030 res = AVERROR(ENOMEM);
4031 goto fail;
4032 }
4033
4034 30174 pkt->data = pkt_data;
4035 30174 pkt->size = pkt_size;
4036 30174 pkt->flags = is_keyframe;
4037 30174 pkt->stream_index = st->index;
4038
4039
2/2
✓ Branch 0 taken 136 times.
✓ Branch 1 taken 30174 times.
30310 for (int i = 0; i < nb_blockmore; i++) {
4040 136 MatroskaBlockMore *more = &blockmore[i];
4041
4042
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 136 times.
136 if (!more->additional.size)
4043 continue;
4044
4045 136 res = matroska_parse_block_additional(matroska, track, pkt, more->additional.data,
4046 more->additional.size, more->additional_id);
4047
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 136 times.
136 if (res < 0) {
4048 av_packet_unref(pkt);
4049 return res;
4050 }
4051 }
4052
4053
2/2
✓ Branch 0 taken 27 times.
✓ Branch 1 taken 30147 times.
30174 if (discard_padding) {
4054 27 uint8_t *side_data = av_packet_new_side_data(pkt,
4055 AV_PKT_DATA_SKIP_SAMPLES,
4056 10);
4057
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 27 times.
27 if (!side_data) {
4058 av_packet_unref(pkt);
4059 return AVERROR(ENOMEM);
4060 }
4061 27 discard_padding = av_rescale_q(discard_padding,
4062 27 (AVRational){1, 1000000000},
4063 27 (AVRational){1, st->codecpar->sample_rate});
4064
1/2
✓ Branch 0 taken 27 times.
✗ Branch 1 not taken.
27 if (discard_padding > 0) {
4065 27 AV_WL32A(side_data + 4, discard_padding);
4066 } else {
4067 AV_WL32A(side_data, -discard_padding);
4068 }
4069 }
4070
4071
2/2
✓ Branch 0 taken 432 times.
✓ Branch 1 taken 29742 times.
30174 if (track->ms_compat)
4072 432 pkt->dts = timecode;
4073 else
4074 29742 pkt->pts = timecode;
4075 30174 pkt->pos = pos;
4076 30174 pkt->duration = lace_duration;
4077
4078 30174 res = avpriv_packet_list_put(&matroska->queue, pkt, NULL, 0);
4079
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 30174 times.
30174 if (res < 0) {
4080 av_packet_unref(pkt);
4081 return AVERROR(ENOMEM);
4082 }
4083
4084 30174 return 0;
4085
4086 no_output:
4087 fail:
4088 if (!buf)
4089 av_free(pkt_data);
4090 return res;
4091 }
4092
4093 30747 static int matroska_parse_block(MatroskaDemuxContext *matroska, AVBufferRef *buf, uint8_t *data,
4094 int size, int64_t pos, uint64_t cluster_time,
4095 uint64_t block_duration, int is_keyframe,
4096 MatroskaBlockMore *blockmore, int nb_blockmore,
4097 int64_t cluster_pos, int64_t discard_padding)
4098 {
4099 30747 uint64_t timecode = AV_NOPTS_VALUE;
4100 MatroskaTrack *track;
4101 FFIOContext pb;
4102 30747 int res = 0;
4103 AVStream *st;
4104 int16_t block_time;
4105 uint32_t lace_size[256];
4106 30747 int n, flags, laces = 0;
4107 uint64_t num;
4108 int trust_default_duration;
4109
4110 av_assert1(buf);
4111
4112 30747 ffio_init_read_context(&pb, data, size);
4113
4114
1/2
✗ Branch 1 not taken.
✓ Branch 2 taken 30747 times.
30747 if ((n = ebml_read_num(matroska, &pb.pub, 8, &num, 1)) < 0)
4115 return n;
4116 30747 data += n;
4117 30747 size -= n;
4118
4119 30747 track = matroska_find_track_by_num(matroska, num);
4120
3/4
✓ Branch 0 taken 30746 times.
✓ Branch 1 taken 1 times.
✗ Branch 2 not taken.
✓ Branch 3 taken 30746 times.
30747 if (!track || size < 3)
4121 1 return AVERROR_INVALIDDATA;
4122
4123
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 30746 times.
30746 if (!(st = track->stream)) {
4124 av_log(matroska->ctx, AV_LOG_VERBOSE,
4125 "No stream associated to TrackNumber %"PRIu64". "
4126 "Ignoring Block with this TrackNumber.\n", num);
4127 return 0;
4128 }
4129
4130
2/2
✓ Branch 0 taken 311 times.
✓ Branch 1 taken 30435 times.
30746 if (st->discard >= AVDISCARD_ALL)
4131 311 return res;
4132
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 30435 times.
30435 if (block_duration > INT64_MAX)
4133 block_duration = INT64_MAX;
4134
4135 30435 block_time = sign_extend(AV_RB16(data), 16);
4136 30435 data += 2;
4137 30435 flags = *data++;
4138 30435 size -= 3;
4139
2/2
✓ Branch 0 taken 29992 times.
✓ Branch 1 taken 443 times.
30435 if (is_keyframe == -1)
4140 29992 is_keyframe = flags & 0x80 ? AV_PKT_FLAG_KEY : 0;
4141
4142
3/4
✓ Branch 0 taken 30435 times.
✗ Branch 1 not taken.
✓ Branch 2 taken 79 times.
✓ Branch 3 taken 30356 times.
30435 if (cluster_time != (uint64_t) -1 &&
4143
2/2
✓ Branch 0 taken 63 times.
✓ Branch 1 taken 16 times.
79 (block_time >= 0 || cluster_time >= -block_time)) {
4144 30419 uint64_t timecode_cluster_in_track_tb = (double) cluster_time / track->time_scale;
4145 30419 timecode = timecode_cluster_in_track_tb + block_time - track->codec_delay_in_track_tb;
4146
2/2
✓ Branch 0 taken 128 times.
✓ Branch 1 taken 30291 times.
30419 if (track->type == MATROSKA_TRACK_TYPE_SUBTITLE &&
4147
2/2
✓ Branch 0 taken 6 times.
✓ Branch 1 taken 122 times.
128 timecode < track->end_timecode)
4148 6 is_keyframe = 0; /* overlapping subtitles are not key frame */
4149
2/2
✓ Branch 0 taken 26821 times.
✓ Branch 1 taken 3598 times.
30419 if (is_keyframe) {
4150 26821 ff_reduce_index(matroska->ctx, st->index);
4151 26821 av_add_index_entry(st, cluster_pos, timecode, 0, 0,
4152 AVINDEX_KEYFRAME);
4153 }
4154 }
4155
4156
2/2
✓ Branch 0 taken 593 times.
✓ Branch 1 taken 29842 times.
30435 if (matroska->skip_to_keyframe &&
4157
1/2
✓ Branch 0 taken 593 times.
✗ Branch 1 not taken.
593 track->type != MATROSKA_TRACK_TYPE_SUBTITLE) {
4158 // Compare signed timecodes. Timecode may be negative due to codec delay
4159 // offset. We don't support timestamps greater than int64_t anyway - see
4160 // AVPacket's pts.
4161
2/2
✓ Branch 0 taken 548 times.
✓ Branch 1 taken 45 times.
593 if ((int64_t)timecode < (int64_t)matroska->skip_to_timecode)
4162 548 return res;
4163
1/2
✓ Branch 0 taken 45 times.
✗ Branch 1 not taken.
45 if (is_keyframe)
4164 45 matroska->skip_to_keyframe = 0;
4165 else if (!ffstream(st)->skip_to_keyframe) {
4166 av_log(matroska->ctx, AV_LOG_ERROR, "File is broken, keyframes not correctly marked!\n");
4167 matroska->skip_to_keyframe = 0;
4168 }
4169 }
4170
4171 29887 res = matroska_parse_laces(matroska, &data, size, (flags & 0x06) >> 1,
4172 &pb.pub, lace_size, &laces);
4173
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 29887 times.
29887 if (res < 0) {
4174 av_log(matroska->ctx, AV_LOG_ERROR, "Error parsing frame sizes.\n");
4175 return res;
4176 }
4177
4178 29887 trust_default_duration = track->default_duration != 0;
4179
1/4
✗ Branch 0 not taken.
✓ Branch 1 taken 29887 times.
✗ Branch 2 not taken.
✗ Branch 3 not taken.
29887 if (track->audio.samplerate == 8000 && trust_default_duration) {
4180 // If this is needed for more codecs, then add them here
4181 if (st->codecpar->codec_id == AV_CODEC_ID_AC3) {
4182 if (track->audio.samplerate != st->codecpar->sample_rate || !st->codecpar->frame_size)
4183 trust_default_duration = 0;
4184 }
4185 }
4186
4187
4/4
✓ Branch 0 taken 29607 times.
✓ Branch 1 taken 280 times.
✓ Branch 2 taken 4278 times.
✓ Branch 3 taken 25329 times.
29887 if (!block_duration && trust_default_duration)
4188 4278 block_duration = track->default_duration * laces / matroska->time_scale;
4189
4190
5/6
✓ Branch 0 taken 29887 times.
✗ Branch 1 not taken.
✓ Branch 2 taken 76 times.
✓ Branch 3 taken 29811 times.
✓ Branch 4 taken 60 times.
✓ Branch 5 taken 16 times.
29887 if (cluster_time != (uint64_t)-1 && (block_time >= 0 || cluster_time >= -block_time))
4191 29871 track->end_timecode =
4192 29871 FFMAX(track->end_timecode, timecode + block_duration);
4193
4194
2/2
✓ Branch 0 taken 30264 times.
✓ Branch 1 taken 29887 times.
60151 for (n = 0; n < laces; n++) {
4195 30264 int64_t lace_duration = block_duration*(n+1) / laces - block_duration*n / laces;
4196 30264 uint8_t *out_data = data;
4197 30264 int out_size = lace_size[n];
4198
4199
2/2
✓ Branch 0 taken 81 times.
✓ Branch 1 taken 30183 times.
30264 if (track->needs_decoding) {
4200 81 res = matroska_decode_buffer(&out_data, &out_size, track);
4201
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 81 times.
81 if (res < 0)
4202 return res;
4203 /* Given that we are here means that out_data is no longer
4204 * owned by buf, so set it to NULL. This depends upon
4205 * zero-length header removal compression being ignored. */
4206 av_assert1(out_data != data);
4207 81 buf = NULL;
4208 }
4209
4210
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 30264 times.
30264 if (track->audio.buf) {
4211 res = matroska_parse_rm_audio(matroska, track, st,
4212 out_data, out_size,
4213 timecode, pos);
4214 if (!buf)
4215 av_free(out_data);
4216 if (res)
4217 return res;
4218
2/2
✓ Branch 0 taken 90 times.
✓ Branch 1 taken 30174 times.
30264 } else if (st->codecpar->codec_id == AV_CODEC_ID_WEBVTT) {
4219 90 res = matroska_parse_webvtt(matroska, track, st,
4220 out_data, out_size,
4221 timecode, lace_duration,
4222 pos);
4223
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 90 times.
90 if (!buf)
4224 av_free(out_data);
4225
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 90 times.
90 if (res)
4226 return res;
4227 } else {
4228 30174 res = matroska_parse_frame(matroska, track, st, buf, out_data,
4229 out_size, timecode, lace_duration,
4230 pos, is_keyframe,
4231 blockmore, nb_blockmore,
4232 discard_padding);
4233
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 30174 times.
30174 if (res)
4234 return res;
4235 }
4236
4237
2/2
✓ Branch 0 taken 30176 times.
✓ Branch 1 taken 88 times.
30264 if (timecode != AV_NOPTS_VALUE)
4238
2/2
✓ Branch 0 taken 4847 times.
✓ Branch 1 taken 25329 times.
30176 timecode = lace_duration ? timecode + lace_duration : AV_NOPTS_VALUE;
4239 30264 data += lace_size[n];
4240 }
4241
4242 29887 return 0;
4243 }
4244
4245 31149 static int matroska_parse_cluster(MatroskaDemuxContext *matroska)
4246 {
4247 31149 MatroskaCluster *cluster = &matroska->current_cluster;
4248 31149 MatroskaBlock *block = &cluster->block;
4249 int res;
4250
4251
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 31149 times.
31149 av_assert0(matroska->num_levels <= 2U);
4252
4253
2/2
✓ Branch 0 taken 1149 times.
✓ Branch 1 taken 30000 times.
31149 if (matroska->num_levels == 1) {
4254 1149 res = ebml_parse(matroska, matroska_segment, NULL);
4255
4256
2/2
✓ Branch 0 taken 803 times.
✓ Branch 1 taken 346 times.
1149 if (res == 1) {
4257 /* Found a cluster: subtract the size of the ID already read. */
4258 803 cluster->pos = avio_tell(matroska->ctx->pb) - 4;
4259
4260 803 res = ebml_parse(matroska, matroska_cluster_enter, cluster);
4261
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 803 times.
803 if (res < 0)
4262 return res;
4263 }
4264 }
4265
4266
2/2
✓ Branch 0 taken 30762 times.
✓ Branch 1 taken 387 times.
31149 if (matroska->num_levels == 2) {
4267 /* We are inside a cluster. */
4268 30762 res = ebml_parse(matroska, matroska_cluster_parsing, cluster);
4269
4270
4/4
✓ Branch 0 taken 30752 times.
✓ Branch 1 taken 10 times.
✓ Branch 2 taken 30747 times.
✓ Branch 3 taken 5 times.
30762 if (res >= 0 && block->bin.size > 0) {
4271
2/2
✓ Branch 0 taken 484 times.
✓ Branch 1 taken 30263 times.
30747 int is_keyframe = block->non_simple ? block->reference.count == 0 : -1;
4272
4273 30747 res = matroska_parse_block(matroska, block->bin.buf, block->bin.data,
4274 block->bin.size, block->bin.pos,
4275 cluster->timecode, block->duration,
4276 30747 is_keyframe, block->blockmore.elem,
4277 block->blockmore.nb_elem, cluster->pos,
4278 block->discard_padding);
4279 }
4280
4281 30762 ebml_free(matroska_blockgroup, block);
4282 30762 memset(block, 0, sizeof(*block));
4283
2/2
✓ Branch 0 taken 359 times.
✓ Branch 1 taken 28 times.
387 } else if (!matroska->num_levels) {
4284
2/2
✓ Branch 1 taken 352 times.
✓ Branch 2 taken 7 times.
359 if (!avio_feof(matroska->ctx->pb)) {
4285 352 avio_r8(matroska->ctx->pb);
4286
1/2
✗ Branch 1 not taken.
✓ Branch 2 taken 352 times.
352 if (!avio_feof(matroska->ctx->pb)) {
4287 av_log(matroska->ctx, AV_LOG_WARNING, "File extends beyond "
4288 "end of segment.\n");
4289 return AVERROR_INVALIDDATA;
4290 }
4291 }
4292 359 matroska->done = 1;
4293 359 return AVERROR_EOF;
4294 }
4295
4296 30790 return res;
4297 }
4298
4299 29903 static int matroska_read_packet(AVFormatContext *s, AVPacket *pkt)
4300 {
4301 29903 MatroskaDemuxContext *matroska = s->priv_data;
4302 29903 int ret = 0;
4303
4304
2/2
✓ Branch 0 taken 10 times.
✓ Branch 1 taken 29893 times.
29903 if (matroska->resync_pos == -1) {
4305 // This can only happen if generic seeking has been used.
4306 10 matroska->resync_pos = avio_tell(s->pb);
4307 }
4308
4309
2/2
✓ Branch 1 taken 30762 times.
✓ Branch 2 taken 29517 times.
60279 while (matroska_deliver_packet(matroska, pkt)) {
4310
2/2
✓ Branch 0 taken 386 times.
✓ Branch 1 taken 30376 times.
30762 if (matroska->done)
4311
2/2
✓ Branch 0 taken 10 times.
✓ Branch 1 taken 376 times.
386 return (ret < 0) ? ret : AVERROR_EOF;
4312
4/4
✓ Branch 1 taken 346 times.
✓ Branch 2 taken 30030 times.
✓ Branch 3 taken 13 times.
✓ Branch 4 taken 333 times.
30376 if (matroska_parse_cluster(matroska) < 0 && !matroska->done)
4313 13 ret = matroska_resync(matroska, matroska->resync_pos);
4314 }
4315
4316 29517 return 0;
4317 }
4318
4319 55 static int matroska_read_seek(AVFormatContext *s, int stream_index,
4320 int64_t timestamp, int flags)
4321 {
4322 55 MatroskaDemuxContext *matroska = s->priv_data;
4323 55 MatroskaTrack *tracks = NULL;
4324 55 AVStream *st = s->streams[stream_index];
4325 55 FFStream *const sti = ffstream(st);
4326 int i, index;
4327
4328 /* Parse the CUES now since we need the index data to seek. */
4329
2/2
✓ Branch 0 taken 3 times.
✓ Branch 1 taken 52 times.
55 if (matroska->cues_parsing_deferred > 0) {
4330 3 matroska->cues_parsing_deferred = 0;
4331 3 matroska_parse_cues(matroska);
4332 }
4333
4334
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 55 times.
55 if (!sti->nb_index_entries)
4335 goto err;
4336 55 timestamp = FFMAX(timestamp, sti->index_entries[0].timestamp);
4337
4338
2/2
✓ Branch 1 taken 45 times.
✓ Branch 2 taken 10 times.
55 if ((index = av_index_search_timestamp(st, timestamp, flags)) < 0 ||
4339
2/2
✓ Branch 0 taken 17 times.
✓ Branch 1 taken 28 times.
45 index == sti->nb_index_entries - 1) {
4340 27 matroska_reset_status(matroska, 0, sti->index_entries[sti->nb_index_entries - 1].pos);
4341
2/2
✓ Branch 1 taken 285 times.
✓ Branch 2 taken 410 times.
695 while ((index = av_index_search_timestamp(st, timestamp, flags)) < 0 ||
4342
2/2
✓ Branch 0 taken 409 times.
✓ Branch 1 taken 1 times.
410 index == sti->nb_index_entries - 1) {
4343 694 matroska_clear_queue(matroska);
4344
2/2
✓ Branch 1 taken 26 times.
✓ Branch 2 taken 668 times.
694 if (matroska_parse_cluster(matroska) < 0)
4345 26 break;
4346 }
4347 }
4348
4349 55 matroska_clear_queue(matroska);
4350
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 &&
4351
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 3 times.
3 index == sti->nb_index_entries - 1))
4352 10 goto err;
4353
4354 45 tracks = matroska->tracks.elem;
4355
2/2
✓ Branch 0 taken 69 times.
✓ Branch 1 taken 45 times.
114 for (i = 0; i < matroska->tracks.nb_elem; i++) {
4356 69 tracks[i].audio.pkt_cnt = 0;
4357 69 tracks[i].audio.sub_packet_cnt = 0;
4358 69 tracks[i].audio.buf_timecode = AV_NOPTS_VALUE;
4359 69 tracks[i].end_timecode = 0;
4360 }
4361
4362 /* We seek to a level 1 element, so set the appropriate status. */
4363 45 matroska_reset_status(matroska, 0, sti->index_entries[index].pos);
4364
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45 if (flags & AVSEEK_FLAG_ANY) {
4365 sti->skip_to_keyframe = 0;
4366 matroska->skip_to_timecode = timestamp;
4367 } else {
4368 45 sti->skip_to_keyframe = 1;
4369 45 matroska->skip_to_timecode = sti->index_entries[index].timestamp;
4370 }
4371 45 matroska->skip_to_keyframe = 1;
4372 45 matroska->done = 0;
4373 45 avpriv_update_cur_dts(s, st, sti->index_entries[index].timestamp);
4374 45 return 0;
4375 10 err:
4376 // slightly hackish but allows proper fallback to
4377 // the generic seeking code.
4378 10 matroska_reset_status(matroska, 0, -1);
4379 10 matroska->resync_pos = -1;
4380 10 matroska_clear_queue(matroska);
4381 10 sti->skip_to_keyframe =
4382 10 matroska->skip_to_keyframe = 0;
4383 10 matroska->done = 0;
4384 10 return -1;
4385 }
4386
4387 372 static int matroska_read_close(AVFormatContext *s)
4388 {
4389 372 MatroskaDemuxContext *matroska = s->priv_data;
4390 372 MatroskaTrack *tracks = matroska->tracks.elem;
4391 int n;
4392
4393 372 matroska_clear_queue(matroska);
4394
4395
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819 for (n = 0; n < matroska->tracks.nb_elem; n++)
4396
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447 if (tracks[n].type == MATROSKA_TRACK_TYPE_AUDIO)
4397 84 av_freep(&tracks[n].audio.buf);
4398 372 ebml_free(matroska_segment, matroska);
4399
4400 372 return 0;
4401 }
4402
4403 #if CONFIG_WEBM_DASH_MANIFEST_DEMUXER
4404 typedef struct {
4405 int64_t start_time_ns;
4406 int64_t end_time_ns;
4407 int64_t start_offset;
4408 int64_t end_offset;
4409 } CueDesc;
4410
4411 /* This function searches all the Cues and returns the CueDesc corresponding to
4412 * the timestamp ts. Returned CueDesc will be such that start_time_ns <= ts <
4413 * end_time_ns. All 4 fields will be set to -1 if ts >= file's duration or
4414 * if an error occurred.
4415 */
4416 4051 static CueDesc get_cue_desc(AVFormatContext *s, int64_t ts, int64_t cues_start) {
4417 4051 MatroskaDemuxContext *matroska = s->priv_data;
4418 4051 FFStream *const sti = ffstream(s->streams[0]);
4419 4051 AVIndexEntry *const index_entries = sti->index_entries;
4420 4051 int nb_index_entries = sti->nb_index_entries;
4421 CueDesc cue_desc;
4422 int i;
4423
4424
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4051 if (ts >= (int64_t)(matroska->duration * matroska->time_scale))
4425 101 return (CueDesc) {-1, -1, -1, -1};
4426
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45391 for (i = 1; i < nb_index_entries; i++) {
4427
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45235 if (index_entries[i - 1].timestamp * matroska->time_scale <= ts &&
4428
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45235 index_entries[i].timestamp * matroska->time_scale > ts) {
4429 3794 break;
4430 }
4431 }
4432 3950 --i;
4433
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3950 if (index_entries[i].timestamp > matroska->duration)
4434 return (CueDesc) {-1, -1, -1, -1};
4435 3950 cue_desc.start_time_ns = index_entries[i].timestamp * matroska->time_scale;
4436 3950 cue_desc.start_offset = index_entries[i].pos - matroska->segment_start;
4437
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3950 if (i != nb_index_entries - 1) {
4438 3794 cue_desc.end_time_ns = index_entries[i + 1].timestamp * matroska->time_scale;
4439 3794 cue_desc.end_offset = index_entries[i + 1].pos - matroska->segment_start;
4440 } else {
4441 156 cue_desc.end_time_ns = matroska->duration * matroska->time_scale;
4442 // FIXME: this needs special handling for files where Cues appear
4443 // before Clusters. the current logic assumes Cues appear after
4444 // Clusters.
4445 156 cue_desc.end_offset = cues_start - matroska->segment_start;
4446 }
4447 3950 return cue_desc;
4448 }
4449
4450 10 static int webm_clusters_start_with_keyframe(AVFormatContext *s)
4451 {
4452 10 MatroskaDemuxContext *matroska = s->priv_data;
4453 10 AVStream *const st = s->streams[0];
4454 10 FFStream *const sti = ffstream(st);
4455 10 uint32_t id = matroska->current_id;
4456 int64_t cluster_pos, before_pos;
4457 10 int index, rv = 1;
4458
4459
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10 if (sti->nb_index_entries <= 0)
4460 return 0;
4461
4462 // seek to the first cluster using cues.
4463 10 index = av_index_search_timestamp(st, 0, 0);
4464
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10 if (index < 0)
4465 return 0;
4466 10 cluster_pos = sti->index_entries[index].pos;
4467 10 before_pos = avio_tell(s->pb);
4468 78 while (1) {
4469 uint64_t cluster_id, cluster_length;
4470 int read;
4471 AVPacket *pkt;
4472 88 avio_seek(s->pb, cluster_pos, SEEK_SET);
4473 // read cluster id and length
4474 88 read = ebml_read_num(matroska, matroska->ctx->pb, 4, &cluster_id, 1);
4475
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88 if (read < 0 || cluster_id != 0xF43B675) // done with all clusters
4476 break;
4477 79 read = ebml_read_length(matroska, matroska->ctx->pb, &cluster_length);
4478
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79 if (read < 0)
4479 break;
4480
4481 79 matroska_reset_status(matroska, 0, cluster_pos);
4482 79 matroska_clear_queue(matroska);
4483
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79 if (matroska_parse_cluster(matroska) < 0 ||
4484
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79 !matroska->queue.head) {
4485 break;
4486 }
4487 79 pkt = &matroska->queue.head->pkt;
4488 // 4 + read is the length of the cluster id and the cluster length field.
4489 79 cluster_pos += 4 + read + cluster_length;
4490
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79 if (!(pkt->flags & AV_PKT_FLAG_KEY)) {
4491 1 rv = 0;
4492 1 break;
4493 }
4494 }
4495
4496 /* Restore the status after matroska_read_header: */
4497 10 matroska_reset_status(matroska, id, before_pos);
4498
4499 10 return rv;
4500 }
4501
4502 555 static int buffer_size_after_time_downloaded(int64_t time_ns, double search_sec, int64_t bps,
4503 double min_buffer, double* buffer,
4504 double* sec_to_download, AVFormatContext *s,
4505 int64_t cues_start)
4506 {
4507 555 double nano_seconds_per_second = 1000000000.0;
4508 555 double time_sec = time_ns / nano_seconds_per_second;
4509 555 int rv = 0;
4510 555 int64_t time_to_search_ns = (int64_t)(search_sec * nano_seconds_per_second);
4511 555 int64_t end_time_ns = time_ns + time_to_search_ns;
4512 555 double sec_downloaded = 0.0;
4513 555 CueDesc desc_curr = get_cue_desc(s, time_ns, cues_start);
4514
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555 if (desc_curr.start_time_ns == -1)
4515 return -1;
4516 555 *sec_to_download = 0.0;
4517
4518 // Check for non cue start time.
4519
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555 if (time_ns > desc_curr.start_time_ns) {
4520 513 int64_t cue_nano = desc_curr.end_time_ns - time_ns;
4521 513 double percent = (double)(cue_nano) / (desc_curr.end_time_ns - desc_curr.start_time_ns);
4522 513 double cueBytes = (desc_curr.end_offset - desc_curr.start_offset) * percent;
4523 513 double timeToDownload = (cueBytes * 8.0) / bps;
4524
4525 513 sec_downloaded += (cue_nano / nano_seconds_per_second) - timeToDownload;
4526 513 *sec_to_download += timeToDownload;
4527
4528 // Check if the search ends within the first cue.
4529
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513 if (desc_curr.end_time_ns >= end_time_ns) {
4530 double desc_end_time_sec = desc_curr.end_time_ns / nano_seconds_per_second;
4531 double percent_to_sub = search_sec / (desc_end_time_sec - time_sec);
4532 sec_downloaded = percent_to_sub * sec_downloaded;
4533 *sec_to_download = percent_to_sub * *sec_to_download;
4534 }
4535
4536
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513 if ((sec_downloaded + *buffer) <= min_buffer) {
4537 4 return 1;
4538 }
4539
4540 // Get the next Cue.
4541 509 desc_curr = get_cue_desc(s, desc_curr.end_time_ns, cues_start);
4542 }
4543
4544
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2956 while (desc_curr.start_time_ns != -1) {
4545 2856 int64_t desc_bytes = desc_curr.end_offset - desc_curr.start_offset;
4546 2856 int64_t desc_ns = desc_curr.end_time_ns - desc_curr.start_time_ns;
4547 2856 double desc_sec = desc_ns / nano_seconds_per_second;
4548 2856 double bits = (desc_bytes * 8.0);
4549 2856 double time_to_download = bits / bps;
4550
4551 2856 sec_downloaded += desc_sec - time_to_download;
4552 2856 *sec_to_download += time_to_download;
4553
4554
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2856 if (desc_curr.end_time_ns >= end_time_ns) {
4555 double desc_end_time_sec = desc_curr.end_time_ns / nano_seconds_per_second;
4556 double percent_to_sub = search_sec / (desc_end_time_sec - time_sec);
4557 sec_downloaded = percent_to_sub * sec_downloaded;
4558 *sec_to_download = percent_to_sub * *sec_to_download;
4559
4560 if ((sec_downloaded + *buffer) <= min_buffer)
4561 rv = 1;
4562 break;
4563 }
4564
4565
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2856 if ((sec_downloaded + *buffer) <= min_buffer) {
4566 451 rv = 1;
4567 451 break;
4568 }
4569
4570 2405 desc_curr = get_cue_desc(s, desc_curr.end_time_ns, cues_start);
4571 }
4572 551 *buffer = *buffer + sec_downloaded;
4573 551 return rv;
4574 }
4575
4576 /* This function computes the bandwidth of the WebM file with the help of
4577 * buffer_size_after_time_downloaded() function. Both of these functions are
4578 * adapted from WebM Tools project and are adapted to work with FFmpeg's
4579 * Matroska parsing mechanism.
4580 *
4581 * Returns the bandwidth of the file on success; -1 on error.
4582 * */
4583 10 static int64_t webm_dash_manifest_compute_bandwidth(AVFormatContext *s, int64_t cues_start)
4584 {
4585 10 MatroskaDemuxContext *matroska = s->priv_data;
4586 10 AVStream *st = s->streams[0];
4587 10 FFStream *const sti = ffstream(st);
4588 10 double bandwidth = 0.0;
4589
4590
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111 for (int i = 0; i < sti->nb_index_entries; i++) {
4591 101 int64_t prebuffer_ns = 1000000000;
4592 101 int64_t time_ns = sti->index_entries[i].timestamp * matroska->time_scale;
4593 101 double nano_seconds_per_second = 1000000000.0;
4594 int64_t prebuffered_ns;
4595 101 double prebuffer_bytes = 0.0;
4596 101 int64_t temp_prebuffer_ns = prebuffer_ns;
4597 int64_t pre_bytes, pre_ns;
4598 double pre_sec, prebuffer, bits_per_second;
4599 101 CueDesc desc_beg = get_cue_desc(s, time_ns, cues_start);
4600 // Start with the first Cue.
4601 101 CueDesc desc_end = desc_beg;
4602
4603
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101 if (time_ns > INT64_MAX - prebuffer_ns)
4604 return -1;
4605 101 prebuffered_ns = time_ns + prebuffer_ns;
4606
4607 // Figure out how much data we have downloaded for the prebuffer. This will
4608 // be used later to adjust the bits per sample to try.
4609
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122 while (desc_end.start_time_ns != -1 && desc_end.end_time_ns < prebuffered_ns) {
4610 // Prebuffered the entire Cue.
4611 21 prebuffer_bytes += desc_end.end_offset - desc_end.start_offset;
4612 21 temp_prebuffer_ns -= desc_end.end_time_ns - desc_end.start_time_ns;
4613 21 desc_end = get_cue_desc(s, desc_end.end_time_ns, cues_start);
4614 }
4615
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101 if (desc_end.start_time_ns == -1) {
4616 // The prebuffer is larger than the duration.
4617
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1 if (matroska->duration * matroska->time_scale >= prebuffered_ns)
4618 return -1;
4619 1 bits_per_second = 0.0;
4620 } else {
4621 // The prebuffer ends in the last Cue. Estimate how much data was
4622 // prebuffered.
4623 100 pre_bytes = desc_end.end_offset - desc_end.start_offset;
4624
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100 if (desc_end.end_time_ns <= desc_end.start_time_ns ||
4625
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100 desc_end.end_time_ns - (uint64_t)desc_end.start_time_ns > INT64_MAX)
4626 return -1;
4627 100 pre_ns = desc_end.end_time_ns - desc_end.start_time_ns;
4628 100 pre_sec = pre_ns / nano_seconds_per_second;
4629 100 prebuffer_bytes +=
4630 100 pre_bytes * ((temp_prebuffer_ns / nano_seconds_per_second) / pre_sec);
4631
4632 100 prebuffer = prebuffer_ns / nano_seconds_per_second;
4633
4634 // Set this to 0.0 in case our prebuffer buffers the entire video.
4635 100 bits_per_second = 0.0;
4636 do {
4637 560 int64_t desc_bytes = desc_end.end_offset - desc_beg.start_offset;
4638 560 int64_t desc_ns = desc_end.end_time_ns - desc_beg.start_time_ns;
4639 double desc_sec, calc_bits_per_second, percent, mod_bits_per_second;
4640
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560 if (desc_bytes <= 0 || desc_bytes > INT64_MAX/8)
4641 return -1;
4642
4643 560 desc_sec = desc_ns / nano_seconds_per_second;
4644 560 calc_bits_per_second = (desc_bytes * 8) / desc_sec;
4645
4646 // Drop the bps by the percentage of bytes buffered.
4647 560 percent = (desc_bytes - prebuffer_bytes) / desc_bytes;
4648 560 mod_bits_per_second = calc_bits_per_second * percent;
4649
4650
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560 if (prebuffer < desc_sec) {
4651 555 double search_sec =
4652 555 (double)(matroska->duration * matroska->time_scale) / nano_seconds_per_second;
4653
4654 // Add 1 so the bits per second should be a little bit greater than file
4655 // datarate.
4656 555 int64_t bps = (int64_t)(mod_bits_per_second) + 1;
4657 555 const double min_buffer = 0.0;
4658 555 double buffer = prebuffer;
4659 555 double sec_to_download = 0.0;
4660
4661 555 int rv = buffer_size_after_time_downloaded(prebuffered_ns, search_sec, bps,
4662 min_buffer, &buffer, &sec_to_download,
4663 s, cues_start);
4664
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555 if (rv < 0) {
4665 return -1;
4666
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555 } else if (rv == 0) {
4667 100 bits_per_second = (double)(bps);
4668 100 break;
4669 }
4670 }
4671
4672 460 desc_end = get_cue_desc(s, desc_end.end_time_ns, cues_start);
4673
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460 } while (desc_end.start_time_ns != -1);
4674 }
4675
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101 if (bandwidth < bits_per_second) bandwidth = bits_per_second;
4676 }
4677 10 return (int64_t)bandwidth;
4678 }
4679
4680 10 static int webm_dash_manifest_cues(AVFormatContext *s, int64_t init_range)
4681 {
4682 10 MatroskaDemuxContext *matroska = s->priv_data;
4683 10 EbmlList *seekhead_list = &matroska->seekhead;
4684 10 MatroskaSeekhead *seekhead = seekhead_list->elem;
4685 10 AVStream *const st = s->streams[0];
4686 10 FFStream *const sti = ffstream(st);
4687 AVBPrint bprint;
4688 char *buf;
4689 10 int64_t cues_start = -1, cues_end = -1, before_pos, bandwidth;
4690 int i;
4691 int ret;
4692
4693 // determine cues start and end positions
4694
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34 for (i = 0; i < seekhead_list->nb_elem; i++)
4695
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34 if (seekhead[i].id == MATROSKA_ID_CUES)
4696 10 break;
4697
4698
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10 if (i >= seekhead_list->nb_elem) return -1;
4699
4700 10 before_pos = avio_tell(matroska->ctx->pb);
4701 10 cues_start = seekhead[i].pos + matroska->segment_start;
4702
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10 if (avio_seek(matroska->ctx->pb, cues_start, SEEK_SET) == cues_start) {
4703 // cues_end is computed as cues_start + cues_length + length of the
4704 // Cues element ID (i.e. 4) + EBML length of the Cues element.
4705 // cues_end is inclusive and the above sum is reduced by 1.
4706 uint64_t cues_length, cues_id;
4707 int bytes_read;
4708 10 bytes_read = ebml_read_num (matroska, matroska->ctx->pb, 4, &cues_id, 1);
4709
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10 if (bytes_read < 0 || cues_id != (MATROSKA_ID_CUES & 0xfffffff))
4710 return bytes_read < 0 ? bytes_read : AVERROR_INVALIDDATA;
4711 10 bytes_read = ebml_read_length(matroska, matroska->ctx->pb, &cues_length);
4712
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10 if (bytes_read < 0)
4713 return bytes_read;
4714 10 cues_end = cues_start + 4 + bytes_read + cues_length - 1;
4715 }
4716 10 avio_seek(matroska->ctx->pb, before_pos, SEEK_SET);
4717
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10 if (cues_start == -1 || cues_end == -1) return -1;
4718
4719 // parse the cues
4720 10 matroska_parse_cues(matroska);
4721
4722
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10 if (!sti->nb_index_entries)
4723 return AVERROR_INVALIDDATA;
4724
4725 // cues start
4726 10 av_dict_set_int(&s->streams[0]->metadata, CUES_START, cues_start, 0);
4727
4728 // cues end
4729 10 av_dict_set_int(&s->streams[0]->metadata, CUES_END, cues_end, 0);
4730
4731 // if the file has cues at the start, fix up the init range so that
4732 // it does not include it
4733
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10 if (cues_start <= init_range)
4734 av_dict_set_int(&s->streams[0]->metadata, INITIALIZATION_RANGE, cues_start - 1, 0);
4735
4736 // bandwidth
4737 10 bandwidth = webm_dash_manifest_compute_bandwidth(s, cues_start);
4738
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10 if (bandwidth < 0) return -1;
4739 10 av_dict_set_int(&s->streams[0]->metadata, BANDWIDTH, bandwidth, 0);
4740
4741 // check if all clusters start with key frames
4742 10 av_dict_set_int(&s->streams[0]->metadata, CLUSTER_KEYFRAME, webm_clusters_start_with_keyframe(s), 0);
4743
4744 // Store cue point timestamps as a comma separated list
4745 // for checking subsegment alignment in the muxer.
4746 10 av_bprint_init(&bprint, 0, AV_BPRINT_SIZE_UNLIMITED);
4747
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111 for (int i = 0; i < sti->nb_index_entries; i++)
4748 101 av_bprintf(&bprint, "%" PRId64",", sti->index_entries[i].timestamp);
4749
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10 if (!av_bprint_is_complete(&bprint)) {
4750 av_bprint_finalize(&bprint, NULL);
4751 return AVERROR(ENOMEM);
4752 }
4753 // Remove the trailing ','
4754 10 bprint.str[--bprint.len] = '\0';
4755
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10 if ((ret = av_bprint_finalize(&bprint, &buf)) < 0)
4756 return ret;
4757 10 av_dict_set(&s->streams[0]->metadata, CUE_TIMESTAMPS,
4758 buf, AV_DICT_DONT_STRDUP_VAL);
4759
4760 10 return 0;
4761 }
4762
4763 14 static int webm_dash_manifest_read_header(AVFormatContext *s)
4764 {
4765 char *buf;
4766 14 int ret = matroska_read_header(s);
4767 int64_t init_range;
4768 MatroskaTrack *tracks;
4769 14 MatroskaDemuxContext *matroska = s->priv_data;
4770
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14 if (ret) {
4771 av_log(s, AV_LOG_ERROR, "Failed to read file headers\n");
4772 return -1;
4773 }
4774
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14 if (!matroska->tracks.nb_elem || !s->nb_streams) {
4775 av_log(s, AV_LOG_ERROR, "No track found\n");
4776 return AVERROR_INVALIDDATA;
4777 }
4778
4779
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14 if (!matroska->is_live) {
4780 10 buf = av_asprintf("%g", matroska->duration);
4781
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10 if (!buf)
4782 return AVERROR(ENOMEM);
4783 10 av_dict_set(&s->streams[0]->metadata, DURATION,
4784 buf, AV_DICT_DONT_STRDUP_VAL);
4785
4786 // initialization range
4787 // 5 is the offset of Cluster ID.
4788 10 init_range = avio_tell(s->pb) - 5;
4789 10 av_dict_set_int(&s->streams[0]->metadata, INITIALIZATION_RANGE, init_range, 0);
4790 }
4791
4792 // basename of the file
4793 14 buf = strrchr(s->url, '/');
4794
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14 av_dict_set(&s->streams[0]->metadata, FILENAME, buf ? ++buf : s->url, 0);
4795
4796 // track number
4797 14 tracks = matroska->tracks.elem;
4798 14 av_dict_set_int(&s->streams[0]->metadata, TRACK_NUMBER, tracks[0].num, 0);
4799
4800 // parse the cues and populate Cue related fields
4801
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14 if (!matroska->is_live) {
4802 10 ret = webm_dash_manifest_cues(s, init_range);
4803
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10 if (ret < 0) {
4804 av_log(s, AV_LOG_ERROR, "Error parsing Cues\n");
4805 return ret;
4806 }
4807 }
4808
4809 // use the bandwidth from the command line if it was provided
4810
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14 if (matroska->bandwidth > 0) {
4811 2 av_dict_set_int(&s->streams[0]->metadata, BANDWIDTH,
4812 2 matroska->bandwidth, 0);
4813 }
4814 14 return 0;
4815 }
4816
4817 28 static int webm_dash_manifest_read_packet(AVFormatContext *s, AVPacket *pkt)
4818 {
4819 28 return AVERROR_EOF;
4820 }
4821
4822 #define OFFSET(x) offsetof(MatroskaDemuxContext, x)
4823 static const AVOption options[] = {
4824 { "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 },
4825 { "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 },
4826 { NULL },
4827 };
4828
4829 static const AVClass webm_dash_class = {
4830 .class_name = "WebM DASH Manifest demuxer",
4831 .item_name = av_default_item_name,
4832 .option = options,
4833 .version = LIBAVUTIL_VERSION_INT,
4834 };
4835
4836 const FFInputFormat ff_webm_dash_manifest_demuxer = {
4837 .p.name = "webm_dash_manifest",
4838 .p.long_name = NULL_IF_CONFIG_SMALL("WebM DASH Manifest"),
4839 .p.priv_class = &webm_dash_class,
4840 .priv_data_size = sizeof(MatroskaDemuxContext),
4841 .flags_internal = FF_INFMT_FLAG_INIT_CLEANUP,
4842 .read_header = webm_dash_manifest_read_header,
4843 .read_packet = webm_dash_manifest_read_packet,
4844 .read_close = matroska_read_close,
4845 };
4846 #endif
4847
4848 const FFInputFormat ff_matroska_demuxer = {
4849 .p.name = "matroska,webm",
4850 .p.long_name = NULL_IF_CONFIG_SMALL("Matroska / WebM"),
4851 .p.extensions = "mkv,mk3d,mka,mks,webm",
4852 .p.mime_type = "audio/webm,audio/x-matroska,video/webm,video/x-matroska",
4853 .priv_data_size = sizeof(MatroskaDemuxContext),
4854 .flags_internal = FF_INFMT_FLAG_INIT_CLEANUP,
4855 .read_probe = matroska_probe,
4856 .read_header = matroska_read_header,
4857 .read_packet = matroska_read_packet,
4858 .read_close = matroska_read_close,
4859 .read_seek = matroska_read_seek,
4860 };
4861