FFmpeg coverage

Directory: ../../../ffmpeg/
File: src/libavformat/flvdec.c
Date: 2026-04-20 20:24:43
Exec Total Coverage
Lines: 810 1273 63.6%
Functions: 23 27 85.2%
Branches: 558 1035 53.9%
Line Branch Exec Source
1 /*
2 * FLV demuxer
3 * Copyright (c) 2003 The FFmpeg Project
4 *
5 * This demuxer will generate a 1 byte extradata for VP6F content.
6 * It is composed of:
7 * - upper 4 bits: difference between encoded width and visible width
8 * - lower 4 bits: difference between encoded height and visible height
9 *
10 * This file is part of FFmpeg.
11 *
12 * FFmpeg is free software; you can redistribute it and/or
13 * modify it under the terms of the GNU Lesser General Public
14 * License as published by the Free Software Foundation; either
15 * version 2.1 of the License, or (at your option) any later version.
16 *
17 * FFmpeg is distributed in the hope that it will be useful,
18 * but WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
20 * Lesser General Public License for more details.
21 *
22 * You should have received a copy of the GNU Lesser General Public
23 * License along with FFmpeg; if not, write to the Free Software
24 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
25 */
26
27 #include "libavutil/avassert.h"
28 #include "libavutil/avstring.h"
29 #include "libavutil/channel_layout.h"
30 #include "libavutil/dict.h"
31 #include "libavutil/mem.h"
32 #include "libavutil/opt.h"
33 #include "libavutil/internal.h"
34 #include "libavutil/intfloat.h"
35 #include "libavutil/intreadwrite.h"
36 #include "libavutil/mastering_display_metadata.h"
37 #include "avformat.h"
38 #include "demux.h"
39 #include "internal.h"
40 #include "flv.h"
41
42 #define VALIDATE_INDEX_TS_THRESH 2500
43
44 #define RESYNC_BUFFER_SIZE (1<<20)
45
46 #define MAX_DEPTH 16 ///< arbitrary limit to prevent unbounded recursion
47
48 typedef struct FLVMasteringMeta {
49 float r_x;
50 float r_y;
51 float g_x;
52 float g_y;
53 float b_x;
54 float b_y;
55 float white_x;
56 float white_y;
57 float max_luminance;
58 float min_luminance;
59 } FLVMasteringMeta;
60
61 typedef struct FLVMetaVideoColor {
62 enum AVColorSpace matrix_coefficients;
63 enum AVColorTransferCharacteristic trc;
64 enum AVColorPrimaries primaries;
65 uint16_t max_cll;
66 uint16_t max_fall;
67 FLVMasteringMeta mastering_meta;
68 } FLVMetaVideoColor;
69
70 enum FLVMetaColorInfoFlag {
71 FLV_COLOR_INFO_FLAG_NONE = 0,
72 FLV_COLOR_INFO_FLAG_GOT = 1,
73 FLV_COLOR_INFO_FLAG_PARSING = 2,
74 };
75
76 typedef struct FLVContext {
77 const AVClass *class; ///< Class for private options.
78 int trust_metadata; ///< configure streams according onMetaData
79 int trust_datasize; ///< trust data size of FLVTag
80 int dump_full_metadata; ///< Dump full metadata of the onMetadata
81 int wrong_dts; ///< wrong dts due to negative cts
82 uint8_t *new_extradata[FLV_STREAM_TYPE_NB];
83 int new_extradata_size[FLV_STREAM_TYPE_NB];
84 int last_sample_rate;
85 int last_channels;
86 struct {
87 int64_t dts;
88 int64_t pos;
89 } validate_index[2];
90 int validate_next;
91 int validate_count;
92 int searched_for_end;
93
94 uint8_t resync_buffer[2*RESYNC_BUFFER_SIZE];
95
96 int broken_sizes;
97 int64_t sum_flv_tag_size;
98
99 int last_keyframe_stream_index;
100 int keyframe_count;
101 int64_t video_bit_rate;
102 int64_t audio_bit_rate;
103 int64_t *keyframe_times;
104 int64_t *keyframe_filepositions;
105 AVRational framerate;
106 int64_t last_ts;
107 int64_t time_offset;
108 int64_t time_pos;
109
110 FLVMetaVideoColor meta_color_info;
111 enum FLVMetaColorInfoFlag meta_color_info_flag;
112
113 uint8_t **mt_extradata;
114 int *mt_extradata_sz;
115 int mt_extradata_cnt;
116 } FLVContext;
117
118 /* AMF date type */
119 typedef struct amf_date {
120 double milliseconds;
121 int16_t timezone;
122 } amf_date;
123
124 14934 static int probe(const AVProbeData *p, int live)
125 {
126 14934 const uint8_t *d = p->buf;
127 14934 unsigned offset = AV_RB32(d + 5);
128
129
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 14934 if (d[0] == 'F' &&
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 140 d[1] == 'L' &&
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 78 d[2] == 'V' &&
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 78 offset + 100 < p->buf_size &&
134 offset > 8) {
135 78 int is_live = !memcmp(d + offset + 40, "NGINX RTMP", 10);
136
137
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 78 if (live == is_live)
138 39 return AVPROBE_SCORE_MAX;
139 }
140 14895 return 0;
141 }
142
143 7467 static int flv_probe(const AVProbeData *p)
144 {
145 7467 return probe(p, 0);
146 }
147
148 7467 static int live_flv_probe(const AVProbeData *p)
149 {
150 7467 return probe(p, 1);
151 }
152
153 7467 static int kux_probe(const AVProbeData *p)
154 {
155 7467 const uint8_t *d = p->buf;
156
157
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 7467 if (d[0] == 'K' &&
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 3 d[1] == 'D' &&
159 ✗ d[2] == 'K' &&
160 ✗ d[3] == 0 &&
161 ✗ d[4] == 0) {
162 ✗ return AVPROBE_SCORE_EXTENSION + 1;
163 }
164 7467 return 0;
165 }
166
167 49 static void add_keyframes_index(AVFormatContext *s)
168 {
169 49 FLVContext *flv = s->priv_data;
170 49 AVStream *stream = NULL;
171 49 unsigned int i = 0;
172
173
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 49 if (flv->last_keyframe_stream_index < 0) {
174 3 av_log(s, AV_LOG_DEBUG, "keyframe stream hasn't been created\n");
175 3 return;
176 }
177
178
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 46 av_assert0(flv->last_keyframe_stream_index <= s->nb_streams);
179 46 stream = s->streams[flv->last_keyframe_stream_index];
180
181
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 46 if (ffstream(stream)->nb_index_entries == 0) {
182
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 219 for (i = 0; i < flv->keyframe_count; i++) {
183 173 av_log(s, AV_LOG_TRACE, "keyframe filepositions = %"PRId64" times = %"PRId64"\n",
184 173 flv->keyframe_filepositions[i], flv->keyframe_times[i]);
185 173 av_add_index_entry(stream, flv->keyframe_filepositions[i],
186 173 flv->keyframe_times[i], 0, 0, AVINDEX_KEYFRAME);
187 }
188 } else
189 ✗ av_log(s, AV_LOG_WARNING, "Skipping duplicate index\n");
190
191
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 46 if (stream->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
192 34 av_freep(&flv->keyframe_times);
193 34 av_freep(&flv->keyframe_filepositions);
194 34 flv->keyframe_count = 0;
195 }
196 }
197
198 70 static AVStream *create_stream(AVFormatContext *s, int codec_type, int track_idx)
199 {
200 70 FFFormatContext *const si = ffformatcontext(s);
201 70 FLVContext *flv = s->priv_data;
202 70 AVStream *st = avformat_new_stream(s, NULL);
203
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 70 if (!st)
204 ✗ return NULL;
205 70 st->codecpar->codec_type = codec_type;
206 70 st->id = track_idx;
207 70 avpriv_set_pts_info(st, 32, 1, 1000); /* 32 bit pts in ms */
208
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 70 if (track_idx)
209 24 return st;
210
211
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 46 if (s->nb_streams>=3 ||( s->nb_streams==2
212
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 6 && s->streams[0]->codecpar->codec_type != AVMEDIA_TYPE_SUBTITLE
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 6 && s->streams[1]->codecpar->codec_type != AVMEDIA_TYPE_DATA))
216 6 s->ctx_flags &= ~AVFMTCTX_NOHEADER;
217
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 46 if (codec_type == AVMEDIA_TYPE_AUDIO) {
218 12 st->codecpar->bit_rate = flv->audio_bit_rate;
219 12 si->missing_streams &= ~FLV_HEADER_FLAG_HASAUDIO;
220 }
221
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 46 if (codec_type == AVMEDIA_TYPE_VIDEO) {
222 34 st->codecpar->bit_rate = flv->video_bit_rate;
223 34 si->missing_streams &= ~FLV_HEADER_FLAG_HASVIDEO;
224 34 st->avg_frame_rate = flv->framerate;
225 }
226
227 46 flv->last_keyframe_stream_index = s->nb_streams - 1;
228 46 add_keyframes_index(s);
229 46 return st;
230 }
231
232 4905 static int flv_same_audio_codec(AVCodecParameters *apar, int flags, uint32_t codec_fourcc)
233 {
234
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 4905 int bits_per_coded_sample = (flags & FLV_AUDIO_SAMPLESIZE_MASK) ? 16 : 8;
235 4905 int flv_codecid = flags & FLV_AUDIO_CODECID_MASK;
236 int codec_id;
237
238
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 4905 switch (codec_fourcc) {
239 1110 case MKBETAG('m', 'p', '4', 'a'):
240 1110 return apar->codec_id == AV_CODEC_ID_AAC;
241 465 case MKBETAG('O', 'p', 'u', 's'):
242 465 return apar->codec_id == AV_CODEC_ID_OPUS;
243 ✗ case MKBETAG('.', 'm', 'p', '3'):
244 ✗ return apar->codec_id == AV_CODEC_ID_MP3;
245 165 case MKBETAG('f', 'L', 'a', 'C'):
246 165 return apar->codec_id == AV_CODEC_ID_FLAC;
247 573 case MKBETAG('a', 'c', '-', '3'):
248 573 return apar->codec_id == AV_CODEC_ID_AC3;
249 ✗ case MKBETAG('e', 'c', '-', '3'):
250 ✗ return apar->codec_id == AV_CODEC_ID_EAC3;
251 2592 case 0:
252 // Not enhanced flv, continue as normal.
253 2592 break;
254 ✗ default:
255 // Unknown FOURCC
256 ✗ return 0;
257 }
258
259
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 2592 if (!apar->codec_id && !apar->codec_tag)
260 ✗ return 1;
261
262
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 2592 if (apar->bits_per_coded_sample != bits_per_coded_sample)
263 ✗ return 0;
264
265
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 2592 switch (flv_codecid) {
266 // no distinction between S16 and S8 PCM codec flags
267 ✗ case FLV_CODECID_PCM:
268 ✗ codec_id = bits_per_coded_sample == 8
269 ? AV_CODEC_ID_PCM_U8
270 #if HAVE_BIGENDIAN
271 : AV_CODEC_ID_PCM_S16BE;
272 #else
273 ✗ : AV_CODEC_ID_PCM_S16LE;
274 #endif
275 ✗ return codec_id == apar->codec_id;
276 ✗ case FLV_CODECID_PCM_LE:
277 ✗ codec_id = bits_per_coded_sample == 8
278 ? AV_CODEC_ID_PCM_U8
279 ✗ : AV_CODEC_ID_PCM_S16LE;
280 ✗ return codec_id == apar->codec_id;
281 613 case FLV_CODECID_AAC:
282 613 return apar->codec_id == AV_CODEC_ID_AAC;
283 284 case FLV_CODECID_ADPCM:
284 284 return apar->codec_id == AV_CODEC_ID_ADPCM_SWF;
285 ✗ case FLV_CODECID_SPEEX:
286 ✗ return apar->codec_id == AV_CODEC_ID_SPEEX;
287 ✗ case FLV_CODECID_MP3:
288 ✗ return apar->codec_id == AV_CODEC_ID_MP3;
289 1695 case FLV_CODECID_NELLYMOSER_8KHZ_MONO:
290 case FLV_CODECID_NELLYMOSER_16KHZ_MONO:
291 case FLV_CODECID_NELLYMOSER:
292 1695 return apar->codec_id == AV_CODEC_ID_NELLYMOSER;
293 ✗ case FLV_CODECID_PCM_MULAW:
294 ✗ return apar->sample_rate == 8000 &&
295 ✗ apar->codec_id == AV_CODEC_ID_PCM_MULAW;
296 ✗ case FLV_CODECID_PCM_ALAW:
297 ✗ return apar->sample_rate == 8000 &&
298 ✗ apar->codec_id == AV_CODEC_ID_PCM_ALAW;
299 ✗ default:
300 ✗ return apar->codec_tag == (flv_codecid >> FLV_AUDIO_CODECID_OFFSET);
301 }
302 }
303
304 2616 static int flv_set_audio_codec(AVFormatContext *s, AVStream *astream,
305 AVCodecParameters *apar, int flv_codecid)
306 {
307 2616 FFStream *const astreami = ffstream(astream);
308 2616 AVCodecParameters *par = astream->codecpar;
309 2616 enum AVCodecID old_codec_id = astream->codecpar->codec_id;
310
311
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 2616 switch (flv_codecid) {
312 // no distinction between S16 and S8 PCM codec flags
313 ✗ case FLV_CODECID_PCM:
314 ✗ apar->codec_id = apar->bits_per_coded_sample == 8
315 ? AV_CODEC_ID_PCM_U8
316 #if HAVE_BIGENDIAN
317 : AV_CODEC_ID_PCM_S16BE;
318 #else
319 ✗ : AV_CODEC_ID_PCM_S16LE;
320 #endif
321 ✗ break;
322 ✗ case FLV_CODECID_PCM_LE:
323 ✗ apar->codec_id = apar->bits_per_coded_sample == 8
324 ? AV_CODEC_ID_PCM_U8
325 ✗ : AV_CODEC_ID_PCM_S16LE;
326 ✗ break;
327 618 case FLV_CODECID_AAC:
328 618 apar->codec_id = AV_CODEC_ID_AAC;
329 618 break;
330 288 case FLV_CODECID_ADPCM:
331 288 apar->codec_id = AV_CODEC_ID_ADPCM_SWF;
332 288 break;
333 ✗ case FLV_CODECID_SPEEX:
334 ✗ apar->codec_id = AV_CODEC_ID_SPEEX;
335 ✗ apar->sample_rate = 16000;
336 ✗ break;
337 ✗ case FLV_CODECID_MP3:
338 ✗ apar->codec_id = AV_CODEC_ID_MP3;
339 ✗ ffstream(astream)->need_parsing = AVSTREAM_PARSE_FULL;
340 ✗ break;
341 ✗ case FLV_CODECID_NELLYMOSER_8KHZ_MONO:
342 // in case metadata does not otherwise declare samplerate
343 ✗ apar->sample_rate = 8000;
344 ✗ apar->codec_id = AV_CODEC_ID_NELLYMOSER;
345 ✗ break;
346 376 case FLV_CODECID_NELLYMOSER_16KHZ_MONO:
347 376 apar->sample_rate = 16000;
348 376 apar->codec_id = AV_CODEC_ID_NELLYMOSER;
349 376 break;
350 1322 case FLV_CODECID_NELLYMOSER:
351 1322 apar->codec_id = AV_CODEC_ID_NELLYMOSER;
352 1322 break;
353 ✗ case FLV_CODECID_PCM_MULAW:
354 ✗ apar->sample_rate = 8000;
355 ✗ apar->codec_id = AV_CODEC_ID_PCM_MULAW;
356 ✗ break;
357 ✗ case FLV_CODECID_PCM_ALAW:
358 ✗ apar->sample_rate = 8000;
359 ✗ apar->codec_id = AV_CODEC_ID_PCM_ALAW;
360 ✗ break;
361 3 case MKBETAG('m', 'p', '4', 'a'):
362 3 apar->codec_id = AV_CODEC_ID_AAC;
363 3 break;
364 3 case MKBETAG('O', 'p', 'u', 's'):
365 3 apar->codec_id = AV_CODEC_ID_OPUS;
366 3 apar->sample_rate = 48000;
367 3 break;
368 ✗ case MKBETAG('.', 'm', 'p', '3'):
369 ✗ apar->codec_id = AV_CODEC_ID_MP3;
370 ✗ break;
371 3 case MKBETAG('f', 'L', 'a', 'C'):
372 3 apar->codec_id = AV_CODEC_ID_FLAC;
373 3 break;
374 3 case MKBETAG('a', 'c', '-', '3'):
375 3 apar->codec_id = AV_CODEC_ID_AC3;
376 3 break;
377 ✗ case MKBETAG('e', 'c', '-', '3'):
378 ✗ apar->codec_id = AV_CODEC_ID_EAC3;
379 ✗ break;
380 ✗ default:
381 ✗ avpriv_request_sample(s, "Audio codec (%x)",
382 flv_codecid >> FLV_AUDIO_CODECID_OFFSET);
383 ✗ apar->codec_tag = flv_codecid >> FLV_AUDIO_CODECID_OFFSET;
384 }
385
386
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 2616 if (!astreami->need_context_update && par->codec_id != old_codec_id) {
387 ✗ avpriv_request_sample(s, "Changing the codec id midstream");
388 ✗ return AVERROR_PATCHWELCOME;
389 }
390 2616 return 0;
391 }
392
393 3984 static int flv_same_video_codec(AVCodecParameters *vpar, uint32_t flv_codecid)
394 {
395
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 3984 if (!vpar->codec_id && !vpar->codec_tag)
396 ✗ return 1;
397
398
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 3984 switch (flv_codecid) {
399 17 case MKBETAG('v', 'v', 'c', '1'):
400 17 return vpar->codec_id == AV_CODEC_ID_VVC;
401 552 case FLV_CODECID_X_HEVC:
402 case MKBETAG('h', 'v', 'c', '1'):
403 552 return vpar->codec_id == AV_CODEC_ID_HEVC;
404 330 case MKBETAG('a', 'v', '0', '1'):
405 330 return vpar->codec_id == AV_CODEC_ID_AV1;
406 229 case MKBETAG('v', 'p', '0', '9'):
407 229 return vpar->codec_id == AV_CODEC_ID_VP9;
408 493 case FLV_CODECID_H263:
409 493 return vpar->codec_id == AV_CODEC_ID_FLV1;
410 271 case FLV_CODECID_SCREEN:
411 271 return vpar->codec_id == AV_CODEC_ID_FLASHSV;
412 196 case FLV_CODECID_SCREEN2:
413 196 return vpar->codec_id == AV_CODEC_ID_FLASHSV2;
414 173 case FLV_CODECID_VP6:
415 173 return vpar->codec_id == AV_CODEC_ID_VP6F;
416 ✗ case FLV_CODECID_VP6A:
417 ✗ return vpar->codec_id == AV_CODEC_ID_VP6A;
418 1723 case FLV_CODECID_H264:
419 case MKBETAG('a', 'v', 'c', '1'):
420 1723 return vpar->codec_id == AV_CODEC_ID_H264;
421 ✗ default:
422 ✗ return vpar->codec_tag == flv_codecid;
423 }
424 }
425
426 2673 static int flv_set_video_codec(AVFormatContext *s, AVStream *vstream,
427 uint32_t flv_codecid, int read)
428 {
429 2673 FFStream *const vstreami = ffstream(vstream);
430 2673 int ret = 0;
431 2673 AVCodecParameters *par = vstream->codecpar;
432 2673 enum AVCodecID old_codec_id = vstream->codecpar->codec_id;
433
434
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 2673 switch (flv_codecid) {
435 18 case MKBETAG('v', 'v', 'c', '1'):
436 18 par->codec_id = AV_CODEC_ID_VVC;
437 18 vstreami->need_parsing = AVSTREAM_PARSE_HEADERS;
438 18 break;
439 227 case FLV_CODECID_X_HEVC:
440 case MKBETAG('h', 'v', 'c', '1'):
441 227 par->codec_id = AV_CODEC_ID_HEVC;
442 227 vstreami->need_parsing = AVSTREAM_PARSE_HEADERS;
443 227 break;
444 176 case MKBETAG('a', 'v', '0', '1'):
445 176 par->codec_id = AV_CODEC_ID_AV1;
446 176 vstreami->need_parsing = AVSTREAM_PARSE_HEADERS;
447 176 break;
448 122 case MKBETAG('v', 'p', '0', '9'):
449 122 par->codec_id = AV_CODEC_ID_VP9;
450 122 vstreami->need_parsing = AVSTREAM_PARSE_HEADERS;
451 122 break;
452 503 case FLV_CODECID_H263:
453 503 par->codec_id = AV_CODEC_ID_FLV1;
454 503 break;
455 ✗ case FLV_CODECID_REALH263:
456 ✗ par->codec_id = AV_CODEC_ID_H263;
457 ✗ break; // Really mean it this time
458 276 case FLV_CODECID_SCREEN:
459 276 par->codec_id = AV_CODEC_ID_FLASHSV;
460 276 break;
461 200 case FLV_CODECID_SCREEN2:
462 200 par->codec_id = AV_CODEC_ID_FLASHSV2;
463 200 break;
464 174 case FLV_CODECID_VP6:
465 174 par->codec_id = AV_CODEC_ID_VP6F;
466 174 case FLV_CODECID_VP6A:
467
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 174 if (flv_codecid == FLV_CODECID_VP6A)
468 ✗ par->codec_id = AV_CODEC_ID_VP6A;
469
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 174 if (read) {
470
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 174 if (par->extradata_size != 1) {
471 1 ff_alloc_extradata(par, 1);
472 }
473
1/2
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 174 if (par->extradata)
474 174 par->extradata[0] = avio_r8(s->pb);
475 else
476 ✗ avio_skip(s->pb, 1);
477 }
478 174 ret = 1; // 1 byte body size adjustment for flv_read_packet()
479 174 break;
480 977 case FLV_CODECID_H264:
481 case MKBETAG('a', 'v', 'c', '1'):
482 977 par->codec_id = AV_CODEC_ID_H264;
483 977 vstreami->need_parsing = AVSTREAM_PARSE_HEADERS;
484 977 break;
485 ✗ case FLV_CODECID_MPEG4:
486 ✗ par->codec_id = AV_CODEC_ID_MPEG4;
487 ✗ break;
488 ✗ default:
489 ✗ avpriv_request_sample(s, "Video codec (%x)", flv_codecid);
490 ✗ par->codec_tag = flv_codecid;
491 }
492
493
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 2673 if (!vstreami->need_context_update && par->codec_id != old_codec_id) {
494 ✗ avpriv_request_sample(s, "Changing the codec id midstream");
495 ✗ return AVERROR_PATCHWELCOME;
496 }
497
498 2673 return ret;
499 }
500
501 593 static int amf_get_string(AVIOContext *ioc, char *buffer, int buffsize)
502 {
503 int ret;
504 593 int length = avio_rb16(ioc);
505
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 593 if (length >= buffsize) {
506 ✗ avio_skip(ioc, length);
507 ✗ return AVERROR_INVALIDDATA;
508 }
509
510 593 ret = avio_read(ioc, buffer, length);
511
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 593 if (ret < 0)
512 ✗ return ret;
513
1/2
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 593 if (ret < length)
514 ✗ return AVERROR_INVALIDDATA;
515
516 593 buffer[length] = '\0';
517
518 593 return length;
519 }
520
521 3 static int parse_keyframes_index(AVFormatContext *s, AVIOContext *ioc, int64_t max_pos)
522 {
523 3 FLVContext *flv = s->priv_data;
524 3 unsigned int timeslen = 0, fileposlen = 0, i;
525 char str_val[256];
526 3 int64_t *times = NULL;
527 3 int64_t *filepositions = NULL;
528 3 int ret = AVERROR(ENOSYS);
529 3 int64_t initial_pos = avio_tell(ioc);
530
531
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 3 if (flv->keyframe_count > 0) {
532 ✗ av_log(s, AV_LOG_DEBUG, "keyframes have been parsed\n");
533 ✗ return 0;
534 }
535
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 3 av_assert0(!flv->keyframe_times);
536
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 3 av_assert0(!flv->keyframe_filepositions);
537
538
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 3 if (s->flags & AVFMT_FLAG_IGNIDX)
539 ✗ return 0;
540
541
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 12 while (avio_tell(ioc) < max_pos - 2 &&
542 6 amf_get_string(ioc, str_val, sizeof(str_val)) > 0) {
543 int64_t **current_array;
544 unsigned int arraylen;
545 int factor;
546
547 // Expect array object in context
548
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 6 if (avio_r8(ioc) != AMF_DATA_TYPE_ARRAY)
549 ✗ break;
550
551 6 arraylen = avio_rb32(ioc);
552
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 6 if (arraylen>>28)
553 ✗ break;
554
555
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 6 if (!strcmp(KEYFRAMES_TIMESTAMP_TAG , str_val) && !times) {
556 3 current_array = &times;
557 3 timeslen = arraylen;
558 3 factor = 1000;
559
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 3 } else if (!strcmp(KEYFRAMES_BYTEOFFSET_TAG, str_val) &&
560
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 3 !filepositions) {
561 3 current_array = &filepositions;
562 3 fileposlen = arraylen;
563 3 factor = 1;
564 } else
565 // unexpected metatag inside keyframes, will not use such
566 // metadata for indexing
567 break;
568
569
1/2
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✓ Branch 2 taken 6 times.
 6 if (!(*current_array = av_mallocz(sizeof(**current_array) * arraylen))) {
570 ✗ ret = AVERROR(ENOMEM);
571 ✗ goto finish;
572 }
573
574
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 352 for (i = 0; i < arraylen && avio_tell(ioc) < max_pos - 1; i++) {
575 double d;
576
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 346 if (avio_r8(ioc) != AMF_DATA_TYPE_NUMBER)
577 ✗ goto invalid;
578 346 d = av_int2double(avio_rb64(ioc)) * factor;
579
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 346 if (isnan(d) || d < INT64_MIN || d > INT64_MAX)
580 ✗ goto invalid;
581
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 346 if (avio_feof(ioc))
582 ✗ goto invalid;
583 346 current_array[0][i] = d;
584 }
585
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 6 if (times && filepositions) {
586 // All done, exiting at a position allowing amf_parse_object
587 // to finish parsing the object
588 3 ret = 0;
589 3 break;
590 }
591 }
592
593
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 3 if (timeslen == fileposlen && fileposlen>1 && max_pos <= filepositions[0]) {
594
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 9 for (i = 0; i < FFMIN(2,fileposlen); i++) {
595 6 flv->validate_index[i].pos = filepositions[i];
596 6 flv->validate_index[i].dts = times[i];
597 6 flv->validate_count = i + 1;
598 }
599 3 flv->keyframe_times = times;
600 3 flv->keyframe_filepositions = filepositions;
601 3 flv->keyframe_count = timeslen;
602 3 times = NULL;
603 3 filepositions = NULL;
604 } else {
605 ✗ invalid:
606 ✗ av_log(s, AV_LOG_WARNING, "Invalid keyframes object, skipping.\n");
607 }
608
609 3 finish:
610 3 av_freep(&times);
611 3 av_freep(&filepositions);
612 3 avio_seek(ioc, initial_pos, SEEK_SET);
613 3 return ret;
614 }
615
616 828 static int amf_parse_object(AVFormatContext *s, AVStream *astream,
617 AVStream *vstream, const char *key,
618 int64_t max_pos, int depth)
619 {
620 AVCodecParameters *apar, *vpar;
621 828 FLVContext *flv = s->priv_data;
622 AVIOContext *ioc;
623 AMFDataType amf_type;
624 char str_val[1024];
625 double num_val;
626 amf_date date;
627
628
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✓ Branch 1 taken 828 times.
 828 if (depth > MAX_DEPTH)
629 ✗ return AVERROR_PATCHWELCOME;
630
631 828 num_val = 0;
632 828 ioc = s->pb;
633
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 828 if (avio_feof(ioc))
634 ✗ return AVERROR_EOF;
635 828 amf_type = avio_r8(ioc);
636
637
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 828 switch (amf_type) {
638 688 case AMF_DATA_TYPE_NUMBER:
639 688 num_val = av_int2double(avio_rb64(ioc));
640 688 break;
641 27 case AMF_DATA_TYPE_BOOL:
642 27 num_val = avio_r8(ioc);
643 27 break;
644 28 case AMF_DATA_TYPE_STRING:
645
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 28 if (amf_get_string(ioc, str_val, sizeof(str_val)) < 0) {
646 ✗ av_log(s, AV_LOG_ERROR, "AMF_DATA_TYPE_STRING parsing failed\n");
647 ✗ return -1;
648 }
649 28 break;
650 37 case AMF_DATA_TYPE_OBJECT:
651
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 37 if (key &&
652
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 37 (ioc->seekable & AVIO_SEEKABLE_NORMAL) &&
653
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 37 !strcmp(KEYFRAMES_TAG, key) && depth == 1)
654
1/2
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✓ Branch 2 taken 3 times.
 3 if (parse_keyframes_index(s, ioc, max_pos) < 0)
655 ✗ av_log(s, AV_LOG_ERROR, "Keyframe index parsing failed\n");
656 else
657 3 add_keyframes_index(s);
658
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 182 while (avio_tell(ioc) < max_pos - 2 &&
659 91 amf_get_string(ioc, str_val, sizeof(str_val)) > 0)
660
1/2
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✓ Branch 2 taken 54 times.
 54 if (amf_parse_object(s, astream, vstream, str_val, max_pos,
661 depth + 1) < 0)
662 ✗ return -1; // if we couldn't skip, bomb out.
663
1/2
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✓ Branch 2 taken 37 times.
 37 if (avio_r8(ioc) != AMF_END_OF_OBJECT) {
664 ✗ av_log(s, AV_LOG_ERROR, "Missing AMF_END_OF_OBJECT in AMF_DATA_TYPE_OBJECT\n");
665 ✗ return -1;
666 }
667 37 break;
668 ✗ case AMF_DATA_TYPE_NULL:
669 case AMF_DATA_TYPE_UNDEFINED:
670 case AMF_DATA_TYPE_UNSUPPORTED:
671 ✗ break; // these take up no additional space
672 40 case AMF_DATA_TYPE_MIXEDARRAY:
673 {
674 unsigned v;
675 40 avio_skip(ioc, 4); // skip 32-bit max array index
676
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✓ Branch 4 taken 40 times.
 824 while (avio_tell(ioc) < max_pos - 2 &&
677 412 amf_get_string(ioc, str_val, sizeof(str_val)) > 0)
678 // this is the only case in which we would want a nested
679 // parse to not skip over the object
680
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✓ Branch 2 taken 372 times.
 372 if (amf_parse_object(s, astream, vstream, str_val, max_pos,
681 depth + 1) < 0)
682 ✗ return -1;
683 40 v = avio_r8(ioc);
684
1/2
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✓ Branch 1 taken 40 times.
 40 if (v != AMF_END_OF_OBJECT) {
685 ✗ av_log(s, AV_LOG_ERROR, "Missing AMF_END_OF_OBJECT in AMF_DATA_TYPE_MIXEDARRAY, found %d\n", v);
686 ✗ return -1;
687 }
688 40 break;
689 }
690 7 case AMF_DATA_TYPE_ARRAY:
691 {
692 unsigned int arraylen, i;
693
694 7 arraylen = avio_rb32(ioc);
695
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 353 for (i = 0; i < arraylen && avio_tell(ioc) < max_pos - 1; i++)
696
1/2
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 346 if (amf_parse_object(s, NULL, NULL, NULL, max_pos,
697 depth + 1) < 0)
698 ✗ return -1; // if we couldn't skip, bomb out.
699 }
700 7 break;
701 1 case AMF_DATA_TYPE_DATE:
702 // timestamp (double) and UTC offset (int16)
703 1 date.milliseconds = av_int2double(avio_rb64(ioc));
704 1 date.timezone = avio_rb16(ioc);
705 1 break;
706 ✗ default: // unsupported type, we couldn't skip
707 ✗ av_log(s, AV_LOG_ERROR, "unsupported amf type %d\n", amf_type);
708 ✗ return -1;
709 }
710
711
2/2
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✓ Branch 1 taken 346 times.
 828 if (key) {
712
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 482 apar = astream ? astream->codecpar : NULL;
713
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✓ Branch 1 taken 482 times.
 482 vpar = vstream ? vstream->codecpar : NULL;
714
715 // stream info doesn't live any deeper than the first object
716
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✓ Branch 1 taken 92 times.
 482 if (depth == 1) {
717
4/4
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 390 if (amf_type == AMF_DATA_TYPE_NUMBER ||
718 amf_type == AMF_DATA_TYPE_BOOL) {
719
2/2
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✓ Branch 1 taken 299 times.
 339 if (!strcmp(key, "duration"))
720 40 s->duration = num_val * AV_TIME_BASE;
721
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✓ Branch 1 taken 265 times.
 299 else if (!strcmp(key, "videodatarate") &&
722
1/2
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 34 0 <= (int)(num_val * 1024.0))
723 34 flv->video_bit_rate = num_val * 1024.0;
724
2/2
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 265 else if (!strcmp(key, "audiodatarate") &&
725
1/2
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 12 0 <= (int)(num_val * 1024.0))
726 12 flv->audio_bit_rate = num_val * 1024.0;
727
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 253 else if (!strcmp(key, "framerate")) {
728 32 flv->framerate = av_d2q(num_val, 1000);
729
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 32 if (vstream)
730 ✗ vstream->avg_frame_rate = flv->framerate;
731
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✓ Branch 1 taken 221 times.
 221 } else if (flv->trust_metadata) {
732 ✗ if (!strcmp(key, "videocodecid") && vpar) {
733 ✗ int ret = flv_set_video_codec(s, vstream, num_val, 0);
734 ✗ if (ret < 0)
735 ✗ return ret;
736 ✗ } else if (!strcmp(key, "audiocodecid") && apar) {
737 ✗ int id = ((int)num_val) << FLV_AUDIO_CODECID_OFFSET;
738 ✗ int ret = flv_set_audio_codec(s, astream, apar, id);
739 ✗ if (ret < 0)
740 ✗ return ret;
741 ✗ } else if (!strcmp(key, "audiosamplerate") && apar) {
742 ✗ apar->sample_rate = num_val;
743 ✗ } else if (!strcmp(key, "audiosamplesize") && apar) {
744 ✗ apar->bits_per_coded_sample = num_val;
745 ✗ } else if (!strcmp(key, "stereo") && apar) {
746 ✗ av_channel_layout_default(&apar->ch_layout, num_val + 1);
747 ✗ } else if (!strcmp(key, "width") && vpar) {
748 ✗ vpar->width = num_val;
749 ✗ } else if (!strcmp(key, "height") && vpar) {
750 ✗ vpar->height = num_val;
751 ✗ } else if (!strcmp(key, "datastream")) {
752 ✗ AVStream *st = create_stream(s, AVMEDIA_TYPE_SUBTITLE, 0);
753 ✗ if (!st)
754 ✗ return AVERROR(ENOMEM);
755 ✗ st->codecpar->codec_id = AV_CODEC_ID_TEXT;
756 }
757 }
758 }
759
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 390 if (amf_type == AMF_DATA_TYPE_STRING) {
760
2/2
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 28 if (!strcmp(key, "encoder")) {
761 4 int version = -1;
762
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✓ Branch 1 taken 4 times.
 4 if (1 == sscanf(str_val, "Open Broadcaster Software v0.%d", &version)) {
763 ✗ if (version > 0 && version <= 655)
764 ✗ flv->broken_sizes = 1;
765 }
766
2/2
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 24 } else if (!strcmp(key, "metadatacreator")) {
767
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 1 if ( !strcmp (str_val, "MEGA")
768
1/2
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✓ Branch 1 taken 1 times.
 1 || !strncmp(str_val, "FlixEngine", 10))
769 ✗ flv->broken_sizes = 1;
770 }
771 }
772 }
773
774
4/4
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✓ Branch 3 taken 312 times.
 482 if (amf_type == AMF_DATA_TYPE_NUMBER && flv->meta_color_info_flag == FLV_COLOR_INFO_FLAG_PARSING) {
775 30 FLVMetaVideoColor *meta_video_color = &flv->meta_color_info;
776
2/2
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✓ Branch 1 taken 26 times.
 30 if (!strcmp(key, "colorPrimaries")) {
777 4 meta_video_color->primaries = num_val;
778
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✓ Branch 1 taken 22 times.
 26 } else if (!strcmp(key, "transferCharacteristics")) {
779 4 meta_video_color->trc = num_val;
780
2/2
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✓ Branch 1 taken 12 times.
 22 } else if (!strcmp(key, "matrixCoefficients")) {
781 10 meta_video_color->matrix_coefficients = num_val;
782
2/2
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✓ Branch 1 taken 11 times.
 12 } else if (!strcmp(key, "maxFall")) {
783 1 meta_video_color->max_fall = num_val;
784
2/2
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✓ Branch 1 taken 10 times.
 11 } else if (!strcmp(key, "maxCLL")) {
785 1 meta_video_color->max_cll = num_val;
786
2/2
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✓ Branch 1 taken 9 times.
 10 } else if (!strcmp(key, "redX")) {
787 1 meta_video_color->mastering_meta.r_x = num_val;
788
2/2
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✓ Branch 1 taken 8 times.
 9 } else if (!strcmp(key, "redY")) {
789 1 meta_video_color->mastering_meta.r_y = num_val;
790
2/2
✓ Branch 0 taken 1 times.
✓ Branch 1 taken 7 times.
 8 } else if (!strcmp(key, "greenX")) {
791 1 meta_video_color->mastering_meta.g_x = num_val;
792
2/2
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✓ Branch 1 taken 6 times.
 7 } else if (!strcmp(key, "greenY")) {
793 1 meta_video_color->mastering_meta.g_y = num_val;
794
2/2
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✓ Branch 1 taken 5 times.
 6 } else if (!strcmp(key, "blueX")) {
795 1 meta_video_color->mastering_meta.b_x = num_val;
796
2/2
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✓ Branch 1 taken 4 times.
 5 } else if (!strcmp(key, "blueY")) {
797 1 meta_video_color->mastering_meta.b_y = num_val;
798
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 4 } else if (!strcmp(key, "whitePointX")) {
799 1 meta_video_color->mastering_meta.white_x = num_val;
800
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✓ Branch 1 taken 2 times.
 3 } else if (!strcmp(key, "whitePointY")) {
801 1 meta_video_color->mastering_meta.white_y = num_val;
802
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✓ Branch 1 taken 1 times.
 2 } else if (!strcmp(key, "maxLuminance")) {
803 1 meta_video_color->mastering_meta.max_luminance = num_val;
804
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✗ Branch 1 not taken.
 1 } else if (!strcmp(key, "minLuminance")) {
805 1 meta_video_color->mastering_meta.min_luminance = num_val;
806 }
807 }
808
809
5/6
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✗ Branch 5 not taken.
 482 if (amf_type == AMF_DATA_TYPE_OBJECT && s->nb_streams == 1 &&
810
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✗ Branch 3 not taken.
 14 ((!apar && !strcmp(key, "audiocodecid")) ||
811
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✓ Branch 1 taken 14 times.
 14 (!vpar && !strcmp(key, "videocodecid"))))
812 ✗ s->ctx_flags &= ~AVFMTCTX_NOHEADER; //If there is either audio/video missing, codecid will be an empty object
813
814
2/2
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✓ Branch 1 taken 40 times.
 482 if ((!strcmp(key, "duration") ||
815
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 442 !strcmp(key, "filesize") ||
816
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✓ Branch 1 taken 34 times.
 403 !strcmp(key, "width") ||
817
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 369 !strcmp(key, "height") ||
818
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 335 !strcmp(key, "videodatarate") ||
819
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✓ Branch 1 taken 32 times.
 301 !strcmp(key, "framerate") ||
820
2/2
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✓ Branch 1 taken 34 times.
 269 !strcmp(key, "videocodecid") ||
821
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 235 !strcmp(key, "audiodatarate") ||
822
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 223 !strcmp(key, "audiosamplerate") ||
823
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 212 !strcmp(key, "audiosamplesize") ||
824
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 201 !strcmp(key, "stereo") ||
825
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 190 !strcmp(key, "audiocodecid") ||
826
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 482 !strcmp(key, "datastream")) && !flv->dump_full_metadata)
827 304 return 0;
828
829 178 s->event_flags |= AVFMT_EVENT_FLAG_METADATA_UPDATED;
830
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 178 if (amf_type == AMF_DATA_TYPE_BOOL) {
831
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 16 av_strlcpy(str_val, num_val > 0 ? "true" : "false",
832 sizeof(str_val));
833 16 av_dict_set(&s->metadata, key, str_val, 0);
834
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 162 } else if (amf_type == AMF_DATA_TYPE_NUMBER) {
835 49 snprintf(str_val, sizeof(str_val), "%.f", num_val);
836 49 av_dict_set(&s->metadata, key, str_val, 0);
837
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 113 } else if (amf_type == AMF_DATA_TYPE_STRING) {
838 28 av_dict_set(&s->metadata, key, str_val, 0);
839
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 85 } else if ( amf_type == AMF_DATA_TYPE_DATE
840
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 1 && isfinite(date.milliseconds)
841
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 1 && date.milliseconds > INT64_MIN/1000
842
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 1 && date.milliseconds < INT64_MAX/1000
843 ) {
844 // timezone is ignored, since there is no easy way to offset the UTC
845 // timestamp into the specified timezone
846 1 ff_dict_set_timestamp(&s->metadata, key, 1000 * (int64_t)date.milliseconds);
847 }
848 }
849
850 524 return 0;
851 }
852
853 #define TYPE_ONTEXTDATA 1
854 #define TYPE_ONCAPTION 2
855 #define TYPE_ONCAPTIONINFO 3
856 #define TYPE_UNKNOWN 9
857
858 40 static int flv_read_metabody(AVFormatContext *s, int64_t next_pos)
859 {
860 40 FLVContext *flv = s->priv_data;
861 AMFDataType type;
862 AVStream *stream, *astream, *vstream;
863 av_unused AVStream *dstream;
864 AVIOContext *ioc;
865 int i;
866 char buffer[32];
867
868 40 astream = NULL;
869 40 vstream = NULL;
870 40 dstream = NULL;
871 40 ioc = s->pb;
872
873 // first object needs to be "onMetaData" string
874 40 type = avio_r8(ioc);
875
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 80 if (type != AMF_DATA_TYPE_STRING ||
876 40 amf_get_string(ioc, buffer, sizeof(buffer)) < 0)
877 ✗ return TYPE_UNKNOWN;
878
879
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 40 if (!strcmp(buffer, "onTextData"))
880 ✗ return TYPE_ONTEXTDATA;
881
882
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 40 if (!strcmp(buffer, "onCaption"))
883 ✗ return TYPE_ONCAPTION;
884
885
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 40 if (!strcmp(buffer, "onCaptionInfo"))
886 ✗ return TYPE_ONCAPTIONINFO;
887
888
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 40 if (strcmp(buffer, "onMetaData") && strcmp(buffer, "onCuePoint") && strcmp(buffer, "|RtmpSampleAccess")) {
889 ✗ av_log(s, AV_LOG_DEBUG, "Unknown type %s\n", buffer);
890 ✗ return TYPE_UNKNOWN;
891 }
892
893 // find the streams now so that amf_parse_object doesn't need to do
894 // the lookup every time it is called.
895
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 40 for (i = 0; i < s->nb_streams; i++) {
896 ✗ stream = s->streams[i];
897 ✗ if (stream->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
898 ✗ vstream = stream;
899 ✗ flv->last_keyframe_stream_index = i;
900 ✗ } else if (stream->codecpar->codec_type == AVMEDIA_TYPE_AUDIO) {
901 ✗ astream = stream;
902 ✗ if (flv->last_keyframe_stream_index == -1)
903 ✗ flv->last_keyframe_stream_index = i;
904 ✗ } else if (stream->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE)
905 ✗ dstream = stream;
906 }
907
908 // parse the second object (we want a mixed array)
909
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 40 if (amf_parse_object(s, astream, vstream, buffer, next_pos, 0) < 0)
910 ✗ return -1;
911
912 40 return 0;
913 }
914
915 40 static int flv_read_header(AVFormatContext *s)
916 {
917 40 FFFormatContext *const si = ffformatcontext(s);
918 int flags;
919 40 FLVContext *flv = s->priv_data;
920 int offset;
921 40 int pre_tag_size = 0;
922
923 /* Actual FLV data at 0xe40000 in KUX file */
924
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 40 if(!strcmp(s->iformat->name, "kux"))
925 ✗ avio_skip(s->pb, 0xe40000);
926
927 40 avio_skip(s->pb, 4);
928 40 flags = avio_r8(s->pb);
929
930 40 si->missing_streams = flags & (FLV_HEADER_FLAG_HASVIDEO | FLV_HEADER_FLAG_HASAUDIO);
931
932 40 s->ctx_flags |= AVFMTCTX_NOHEADER;
933
934 40 offset = avio_rb32(s->pb);
935 40 avio_seek(s->pb, offset, SEEK_SET);
936
937 /* Annex E. The FLV File Format
938 * E.3 TheFLVFileBody
939 * Field Type Comment
940 * PreviousTagSize0 UI32 Always 0
941 * */
942 40 pre_tag_size = avio_rb32(s->pb);
943
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 40 if (pre_tag_size) {
944 ✗ av_log(s, AV_LOG_WARNING, "Read FLV header error, input file is not a standard flv format, first PreviousTagSize0 always is 0\n");
945 }
946
947 40 s->start_time = 0;
948 40 flv->sum_flv_tag_size = 0;
949 40 flv->last_keyframe_stream_index = -1;
950
951 40 return 0;
952 }
953
954 40 static int flv_read_close(AVFormatContext *s)
955 {
956 int i;
957 40 FLVContext *flv = s->priv_data;
958
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 200 for (i = 0; i < FLV_STREAM_TYPE_NB; i++)
959 160 av_freep(&flv->new_extradata[i]);
960
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 43 for (i = 0; i < flv->mt_extradata_cnt; i++)
961 3 av_freep(&flv->mt_extradata[i]);
962 40 av_freep(&flv->mt_extradata);
963 40 av_freep(&flv->mt_extradata_sz);
964 40 av_freep(&flv->keyframe_times);
965 40 av_freep(&flv->keyframe_filepositions);
966 40 return 0;
967 }
968
969 40 static int flv_get_extradata(AVFormatContext *s, AVStream *st, int size)
970 {
971 int ret;
972
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 40 if (!size)
973 ✗ return 0;
974
975
1/2
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 40 if ((ret = ff_get_extradata(s, st->codecpar, s->pb, size)) < 0)
976 ✗ return ret;
977 40 ffstream(st)->need_context_update = 1;
978 40 return 0;
979 }
980
981 3 static int flv_queue_extradata(FLVContext *flv, AVIOContext *pb, int stream,
982 int size, int multitrack)
983 {
984
1/2
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 3 if (!size)
985 ✗ return 0;
986
987
2/2
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 3 if (!multitrack) {
988 2 av_free(flv->new_extradata[stream]);
989 2 flv->new_extradata[stream] = av_mallocz(size +
990 AV_INPUT_BUFFER_PADDING_SIZE);
991
1/2
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 2 if (!flv->new_extradata[stream])
992 ✗ return AVERROR(ENOMEM);
993 2 flv->new_extradata_size[stream] = size;
994 2 avio_read(pb, flv->new_extradata[stream], size);
995 } else {
996 1 int new_count = stream + 1;
997
998
1/2
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 1 if (flv->mt_extradata_cnt < new_count) {
999 1 void *tmp = av_realloc_array(flv->mt_extradata, new_count,
1000 sizeof(*flv->mt_extradata));
1001
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 1 if (!tmp)
1002 ✗ return AVERROR(ENOMEM);
1003 1 flv->mt_extradata = tmp;
1004
1005 1 tmp = av_realloc_array(flv->mt_extradata_sz, new_count,
1006 sizeof(*flv->mt_extradata_sz));
1007
1/2
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 1 if (!tmp)
1008 ✗ return AVERROR(ENOMEM);
1009 1 flv->mt_extradata_sz = tmp;
1010
1011 // Set newly allocated pointers/sizes to 0
1012
2/2
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 4 for (int i = flv->mt_extradata_cnt; i < new_count; i++) {
1013 3 flv->mt_extradata[i] = NULL;
1014 3 flv->mt_extradata_sz[i] = 0;
1015 }
1016 1 flv->mt_extradata_cnt = new_count;
1017 }
1018
1019 1 av_free(flv->mt_extradata[stream]);
1020 1 flv->mt_extradata[stream] = av_mallocz(size + AV_INPUT_BUFFER_PADDING_SIZE);
1021
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 1 if (!flv->mt_extradata[stream])
1022 ✗ return AVERROR(ENOMEM);
1023 1 flv->mt_extradata_sz[stream] = size;
1024 1 avio_read(pb, flv->mt_extradata[stream], size);
1025 }
1026
1027 3 return 0;
1028 }
1029
1030 1 static void clear_index_entries(AVFormatContext *s, int64_t pos)
1031 {
1032 1 av_log(s, AV_LOG_WARNING,
1033 "Found invalid index entries, clearing the index.\n");
1034
2/2
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 2 for (unsigned i = 0; i < s->nb_streams; i++) {
1035 1 FFStream *const sti = ffstream(s->streams[i]);
1036 1 int out = 0;
1037 /* Remove all index entries that point to >= pos */
1038
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 133 for (int j = 0; j < sti->nb_index_entries; j++)
1039
2/2
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 132 if (sti->index_entries[j].pos < pos)
1040 1 sti->index_entries[out++] = sti->index_entries[j];
1041 1 sti->nb_index_entries = out;
1042 }
1043 1 }
1044
1045 ✗ static int amf_skip_tag(AVIOContext *pb, AMFDataType type, int depth)
1046 {
1047 ✗ int nb = -1, ret, parse_name = 1;
1048
1049 ✗ if (depth > MAX_DEPTH)
1050 ✗ return AVERROR_PATCHWELCOME;
1051
1052 ✗ if (avio_feof(pb))
1053 ✗ return AVERROR_EOF;
1054
1055 ✗ switch (type) {
1056 ✗ case AMF_DATA_TYPE_NUMBER:
1057 ✗ avio_skip(pb, 8);
1058 ✗ break;
1059 ✗ case AMF_DATA_TYPE_BOOL:
1060 ✗ avio_skip(pb, 1);
1061 ✗ break;
1062 ✗ case AMF_DATA_TYPE_STRING:
1063 ✗ avio_skip(pb, avio_rb16(pb));
1064 ✗ break;
1065 ✗ case AMF_DATA_TYPE_ARRAY:
1066 ✗ parse_name = 0;
1067 ✗ case AMF_DATA_TYPE_MIXEDARRAY:
1068 ✗ nb = avio_rb32(pb);
1069 ✗ if (nb < 0)
1070 ✗ return AVERROR_INVALIDDATA;
1071 case AMF_DATA_TYPE_OBJECT:
1072 ✗ while(!pb->eof_reached && (nb-- > 0 || type != AMF_DATA_TYPE_ARRAY)) {
1073 ✗ if (parse_name) {
1074 ✗ int size = avio_rb16(pb);
1075 ✗ if (!size) {
1076 ✗ avio_skip(pb, 1);
1077 ✗ break;
1078 }
1079 ✗ avio_skip(pb, size);
1080 }
1081 ✗ if ((ret = amf_skip_tag(pb, avio_r8(pb), depth + 1)) < 0)
1082 ✗ return ret;
1083 }
1084 ✗ break;
1085 ✗ case AMF_DATA_TYPE_NULL:
1086 case AMF_DATA_TYPE_OBJECT_END:
1087 ✗ break;
1088 ✗ default:
1089 ✗ return AVERROR_INVALIDDATA;
1090 }
1091 ✗ return 0;
1092 }
1093
1094 ✗ static int flv_data_packet(AVFormatContext *s, AVPacket *pkt,
1095 int64_t dts, int64_t next)
1096 {
1097 ✗ AVIOContext *pb = s->pb;
1098 ✗ AVStream *st = NULL;
1099 char buf[20];
1100 ✗ int ret = AVERROR_INVALIDDATA;
1101 ✗ int i, length = -1;
1102 ✗ int array = 0;
1103
1104 ✗ switch (avio_r8(pb)) {
1105 ✗ case AMF_DATA_TYPE_ARRAY:
1106 ✗ array = 1;
1107 ✗ case AMF_DATA_TYPE_MIXEDARRAY:
1108 ✗ avio_seek(pb, 4, SEEK_CUR);
1109 ✗ case AMF_DATA_TYPE_OBJECT:
1110 ✗ break;
1111 ✗ default:
1112 ✗ goto skip;
1113 }
1114
1115 ✗ while (array || (ret = amf_get_string(pb, buf, sizeof(buf))) > 0) {
1116 ✗ AMFDataType type = avio_r8(pb);
1117 ✗ if (type == AMF_DATA_TYPE_STRING && (array || !strcmp(buf, "text"))) {
1118 ✗ length = avio_rb16(pb);
1119 ✗ ret = av_get_packet(pb, pkt, length);
1120 ✗ if (ret < 0)
1121 ✗ goto skip;
1122 else
1123 ✗ break;
1124 } else {
1125 ✗ if ((ret = amf_skip_tag(pb, type, 0)) < 0)
1126 ✗ goto skip;
1127 }
1128 }
1129
1130 ✗ if (length < 0) {
1131 ✗ ret = AVERROR_INVALIDDATA;
1132 ✗ goto skip;
1133 }
1134
1135 ✗ for (i = 0; i < s->nb_streams; i++) {
1136 ✗ st = s->streams[i];
1137 ✗ if (st->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE)
1138 ✗ break;
1139 }
1140
1141 ✗ if (i == s->nb_streams) {
1142 ✗ st = create_stream(s, AVMEDIA_TYPE_SUBTITLE, 0);
1143 ✗ if (!st)
1144 ✗ return AVERROR(ENOMEM);
1145 ✗ st->codecpar->codec_id = AV_CODEC_ID_TEXT;
1146 }
1147
1148 ✗ pkt->dts = dts;
1149 ✗ pkt->pts = dts;
1150 ✗ pkt->size = ret;
1151
1152 ✗ pkt->stream_index = st->index;
1153 ✗ pkt->flags |= AV_PKT_FLAG_KEY;
1154
1155 ✗ skip:
1156 ✗ avio_seek(s->pb, next + 4, SEEK_SET);
1157
1158 ✗ return ret;
1159 }
1160
1161 ✗ static int resync(AVFormatContext *s)
1162 {
1163 ✗ FLVContext *flv = s->priv_data;
1164 int64_t i;
1165 ✗ int64_t pos = avio_tell(s->pb);
1166
1167 ✗ for (i=0; !avio_feof(s->pb); i++) {
1168 ✗ int j = i & (RESYNC_BUFFER_SIZE-1);
1169 ✗ int j1 = j + RESYNC_BUFFER_SIZE;
1170 ✗ flv->resync_buffer[j ] =
1171 ✗ flv->resync_buffer[j1] = avio_r8(s->pb);
1172
1173 ✗ if (i >= 8 && pos) {
1174 ✗ uint8_t *d = flv->resync_buffer + j1 - 8;
1175 ✗ if (d[0] == 'F' &&
1176 ✗ d[1] == 'L' &&
1177 ✗ d[2] == 'V' &&
1178 ✗ d[3] < 5 && d[5] == 0) {
1179 ✗ av_log(s, AV_LOG_WARNING, "Concatenated FLV detected, might fail to demux, decode and seek %"PRId64"\n", flv->last_ts);
1180 ✗ flv->time_offset = flv->last_ts + 1;
1181 ✗ flv->time_pos = avio_tell(s->pb);
1182 }
1183 }
1184
1185 ✗ if (i > 22) {
1186 ✗ unsigned lsize2 = AV_RB32(flv->resync_buffer + j1 - 4);
1187 ✗ if (lsize2 >= 11 && lsize2 + 8LL < FFMIN(i, RESYNC_BUFFER_SIZE)) {
1188 ✗ unsigned size2 = AV_RB24(flv->resync_buffer + j1 - lsize2 + 1 - 4);
1189 ✗ unsigned lsize1 = AV_RB32(flv->resync_buffer + j1 - lsize2 - 8);
1190 ✗ if (lsize1 >= 11 && lsize1 + 8LL + lsize2 < FFMIN(i, RESYNC_BUFFER_SIZE)) {
1191 ✗ unsigned size1 = AV_RB24(flv->resync_buffer + j1 - lsize1 + 1 - lsize2 - 8);
1192 ✗ if (size1 == lsize1 - 11 && size2 == lsize2 - 11) {
1193 ✗ avio_seek(s->pb, pos + i - lsize1 - lsize2 - 8, SEEK_SET);
1194 ✗ return 1;
1195 }
1196 }
1197 }
1198 }
1199 }
1200 ✗ return AVERROR_EOF;
1201 }
1202
1203 16 static int flv_parse_video_color_info(AVFormatContext *s, AVStream *st, int64_t next_pos)
1204 {
1205 int ret;
1206 16 FLVContext *flv = s->priv_data;
1207 AMFDataType type;
1208 AVIOContext *ioc;
1209 char buffer[32];
1210 16 ioc = s->pb;
1211
1212 // first object needs to be "colorInfo" string
1213 16 type = avio_r8(ioc);
1214
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 16 if (type != AMF_DATA_TYPE_STRING) {
1215 ✗ av_log(s, AV_LOG_WARNING, "Ignore invalid colorInfo\n");
1216 ✗ return 0;
1217 }
1218
1219 16 ret = amf_get_string(ioc, buffer, sizeof(buffer));
1220
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 16 if (ret < 0)
1221 ✗ return ret;
1222
1223
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 16 if (strcmp(buffer, "colorInfo") != 0) {
1224 ✗ av_log(s, AV_LOG_WARNING, "Ignore invalid colorInfo type %s\n", buffer);
1225 ✗ return 0;
1226 }
1227
1228 16 flv->meta_color_info_flag = FLV_COLOR_INFO_FLAG_PARSING;
1229 16 ret = amf_parse_object(s, NULL, NULL, buffer, next_pos, 0); // parse metadata
1230
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 16 if (ret < 0) {
1231 ✗ flv->meta_color_info_flag = FLV_COLOR_INFO_FLAG_NONE;
1232 ✗ return ret;
1233 }
1234
1235 16 flv->meta_color_info_flag = FLV_COLOR_INFO_FLAG_GOT;
1236
1237 16 return 0;
1238 }
1239
1240 16 static int flv_update_video_color_info(AVFormatContext *s, AVStream *st)
1241 {
1242 16 FLVContext *flv = s->priv_data;
1243 16 const FLVMetaVideoColor* meta_video_color = &flv->meta_color_info;
1244 16 const FLVMasteringMeta *mastering_meta = &meta_video_color->mastering_meta;
1245
1246 int has_mastering_primaries, has_mastering_luminance;
1247 // Mastering primaries are CIE 1931 coords, and must be > 0.
1248 16 has_mastering_primaries =
1249
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 1 mastering_meta->r_x > 0 && mastering_meta->r_y > 0 &&
1250
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 1 mastering_meta->g_x > 0 && mastering_meta->g_y > 0 &&
1251
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 1 mastering_meta->b_x > 0 && mastering_meta->b_y > 0 &&
1252
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 17 mastering_meta->white_x > 0 && mastering_meta->white_y > 0;
1253
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 16 has_mastering_luminance = mastering_meta->max_luminance > 0 && mastering_meta->min_luminance > 0;
1254
1255
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 16 if (meta_video_color->matrix_coefficients != AVCOL_SPC_RESERVED)
1256 16 st->codecpar->color_space = meta_video_color->matrix_coefficients;
1257
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 16 if (meta_video_color->primaries != AVCOL_PRI_RESERVED &&
1258
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 16 meta_video_color->primaries != AVCOL_PRI_RESERVED0)
1259 4 st->codecpar->color_primaries = meta_video_color->primaries;
1260
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 16 if (meta_video_color->trc != AVCOL_TRC_RESERVED &&
1261
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 16 meta_video_color->trc != AVCOL_TRC_RESERVED0)
1262 4 st->codecpar->color_trc = meta_video_color->trc;
1263
1264
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 16 if (meta_video_color->max_cll && meta_video_color->max_fall) {
1265 1 size_t size = 0;
1266 1 AVContentLightMetadata *metadata = av_content_light_metadata_alloc(&size);
1267
1/2
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✓ Branch 1 taken 1 times.
 1 if (!metadata)
1268 ✗ return AVERROR(ENOMEM);
1269
1/2
✗ Branch 1 not taken.
✓ Branch 2 taken 1 times.
 1 if (!av_packet_side_data_add(&st->codecpar->coded_side_data, &st->codecpar->nb_coded_side_data,
1270 AV_PKT_DATA_CONTENT_LIGHT_LEVEL, metadata, size, 0)) {
1271 ✗ av_freep(&metadata);
1272 ✗ return AVERROR(ENOMEM);
1273 }
1274 1 metadata->MaxCLL = meta_video_color->max_cll;
1275 1 metadata->MaxFALL = meta_video_color->max_fall;
1276 }
1277
1278
3/4
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✓ Branch 3 taken 15 times.
 16 if (has_mastering_primaries || has_mastering_luminance) {
1279 1 size_t size = 0;
1280 1 AVMasteringDisplayMetadata *metadata = av_mastering_display_metadata_alloc_size(&size);
1281 AVPacketSideData *sd;
1282
1283
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 1 times.
 1 if (!metadata)
1284 ✗ return AVERROR(ENOMEM);
1285
1286 1 sd = av_packet_side_data_add(&st->codecpar->coded_side_data,
1287 1 &st->codecpar->nb_coded_side_data,
1288 AV_PKT_DATA_MASTERING_DISPLAY_METADATA,
1289 metadata, size, 0);
1290
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 1 times.
 1 if (!sd) {
1291 ✗ av_freep(&metadata);
1292 ✗ return AVERROR(ENOMEM);
1293 }
1294
1295 // hdrCll
1296
1/2
✓ Branch 0 taken 1 times.
✗ Branch 1 not taken.
 1 if (has_mastering_luminance) {
1297 1 metadata->max_luminance = av_d2q(mastering_meta->max_luminance, INT_MAX);
1298 1 metadata->min_luminance = av_d2q(mastering_meta->min_luminance, INT_MAX);
1299 1 metadata->has_luminance = 1;
1300 }
1301 // hdrMdcv
1302
1/2
✓ Branch 0 taken 1 times.
✗ Branch 1 not taken.
 1 if (has_mastering_primaries) {
1303 1 metadata->display_primaries[0][0] = av_d2q(mastering_meta->r_x, INT_MAX);
1304 1 metadata->display_primaries[0][1] = av_d2q(mastering_meta->r_y, INT_MAX);
1305 1 metadata->display_primaries[1][0] = av_d2q(mastering_meta->g_x, INT_MAX);
1306 1 metadata->display_primaries[1][1] = av_d2q(mastering_meta->g_y, INT_MAX);
1307 1 metadata->display_primaries[2][0] = av_d2q(mastering_meta->b_x, INT_MAX);
1308 1 metadata->display_primaries[2][1] = av_d2q(mastering_meta->b_y, INT_MAX);
1309 1 metadata->white_point[0] = av_d2q(mastering_meta->white_x, INT_MAX);
1310 1 metadata->white_point[1] = av_d2q(mastering_meta->white_y, INT_MAX);
1311 1 metadata->has_primaries = 1;
1312 }
1313 }
1314 16 return 0;
1315 }
1316
1317 ✗ static int flv_parse_mod_ex_data(AVFormatContext *s, int *pkt_type, int *size, int64_t *dts)
1318 {
1319 int ex_type, ret;
1320 uint8_t *ex_data;
1321
1322 ✗ int ex_size = (uint8_t)avio_r8(s->pb) + 1;
1323 ✗ *size -= 1;
1324
1325 ✗ if (ex_size == 256) {
1326 ✗ ex_size = (uint16_t)avio_rb16(s->pb) + 1;
1327 ✗ *size -= 2;
1328 }
1329
1330 ✗ if (ex_size >= *size) {
1331 ✗ av_log(s, AV_LOG_WARNING, "ModEx size larger than remaining data!\n");
1332 ✗ return AVERROR(EINVAL);
1333 }
1334
1335 ✗ ex_data = av_malloc(ex_size);
1336 ✗ if (!ex_data)
1337 ✗ return AVERROR(ENOMEM);
1338
1339 ✗ ret = avio_read(s->pb, ex_data, ex_size);
1340 ✗ if (ret < 0) {
1341 ✗ av_free(ex_data);
1342 ✗ return ret;
1343 }
1344 ✗ *size -= ex_size;
1345
1346 ✗ ex_type = (uint8_t)avio_r8(s->pb);
1347 ✗ *size -= 1;
1348
1349 ✗ *pkt_type = ex_type & 0x0f;
1350 ✗ ex_type &= 0xf0;
1351
1352 ✗ if (ex_type == PacketModExTypeTimestampOffsetNano) {
1353 uint32_t nano_offset;
1354
1355 ✗ if (ex_size != 3) {
1356 ✗ av_log(s, AV_LOG_WARNING, "Invalid ModEx size for Type TimestampOffsetNano!\n");
1357 ✗ nano_offset = 0;
1358 } else {
1359 ✗ nano_offset = (ex_data[0] << 16) | (ex_data[1] << 8) | ex_data[2];
1360 }
1361
1362 // this is not likely to ever add anything, but right now timestamps are with ms precision
1363 ✗ *dts += nano_offset / 1000000;
1364 } else {
1365 ✗ av_log(s, AV_LOG_INFO, "Unknown ModEx type: %d", ex_type);
1366 }
1367
1368 ✗ av_free(ex_data);
1369
1370 ✗ return 0;
1371 }
1372
1373 6362 static int flv_read_packet(AVFormatContext *s, AVPacket *pkt)
1374 {
1375 6362 FLVContext *flv = s->priv_data;
1376 6362 int ret = AVERROR_BUG, i, size, flags;
1377 6362 int res = 0;
1378 enum FlvTagType type;
1379 6362 int stream_type = -1;
1380 int64_t next, pos, meta_pos;
1381 6362 int64_t dts, pts = AV_NOPTS_VALUE;
1382 6362 int av_uninit(channels);
1383 6362 int av_uninit(sample_rate);
1384 6362 AVStream *st = NULL;
1385 6362 int last = -1;
1386 int orig_size;
1387 6362 int enhanced_flv = 0;
1388 6362 int multitrack = 0;
1389 6362 int pkt_type = 0;
1390 6362 uint8_t track_idx = 0;
1391 6362 uint32_t codec_id = 0;
1392 6362 int multitrack_type = MultitrackTypeOneTrack;
1393
1394 6362 retry:
1395 /* pkt size is repeated at end. skip it */
1396 6362 pos = avio_tell(s->pb);
1397 6362 type = (avio_r8(s->pb) & 0x1F);
1398 6362 orig_size =
1399 6362 size = avio_rb24(s->pb);
1400 6362 flv->sum_flv_tag_size += size + 11LL;
1401 6362 dts = avio_rb24(s->pb);
1402 6362 dts |= (unsigned)avio_r8(s->pb) << 24;
1403 6362 av_log(s, AV_LOG_TRACE, "type:%d, size:%d, last:%d, dts:%"PRId64" pos:%"PRId64"\n", type, size, last, dts, avio_tell(s->pb));
1404
2/2
✓ Branch 1 taken 78 times.
✓ Branch 2 taken 6284 times.
 6362 if (avio_feof(s->pb))
1405 78 return AVERROR_EOF;
1406 6284 avio_skip(s->pb, 3); /* stream id, always 0 */
1407 6284 flags = 0;
1408
1409
2/2
✓ Branch 0 taken 19 times.
✓ Branch 1 taken 6265 times.
 6284 if (flv->validate_next < flv->validate_count) {
1410 19 int64_t validate_pos = flv->validate_index[flv->validate_next].pos;
1411
2/2
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✓ Branch 1 taken 14 times.
 19 if (pos == validate_pos) {
1412
2/4
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✗ Branch 1 not taken.
✓ Branch 2 taken 5 times.
✗ Branch 3 not taken.
 5 if (FFABS(dts - flv->validate_index[flv->validate_next].dts) <=
1413 VALIDATE_INDEX_TS_THRESH) {
1414 5 flv->validate_next++;
1415 } else {
1416 ✗ clear_index_entries(s, validate_pos);
1417 ✗ flv->validate_count = 0;
1418 }
1419
2/2
✓ Branch 0 taken 1 times.
✓ Branch 1 taken 13 times.
 14 } else if (pos > validate_pos) {
1420 1 clear_index_entries(s, validate_pos);
1421 1 flv->validate_count = 0;
1422 }
1423 }
1424
1425
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 6284 times.
 6284 if (size == 0) {
1426 ✗ ret = FFERROR_REDO;
1427 ✗ goto leave;
1428 }
1429
1430 6284 next = size + avio_tell(s->pb);
1431
1432
2/2
✓ Branch 0 taken 3267 times.
✓ Branch 1 taken 3017 times.
 6284 if (type == FLV_TAG_TYPE_AUDIO) {
1433 3267 stream_type = FLV_STREAM_TYPE_AUDIO;
1434 3267 flags = avio_r8(s->pb);
1435 3267 size--;
1436
1437
2/2
✓ Branch 0 taken 663 times.
✓ Branch 1 taken 2604 times.
 3267 if ((flags & FLV_AUDIO_CODECID_MASK) == FLV_CODECID_EX_HEADER) {
1438 663 enhanced_flv = 1;
1439 663 pkt_type = flags & ~FLV_AUDIO_CODECID_MASK;
1440
1441
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 663 times.
 663 while (pkt_type == PacketTypeModEx) {
1442 ✗ ret = flv_parse_mod_ex_data(s, &pkt_type, &size, &dts);
1443 ✗ if (ret < 0)
1444 ✗ goto leave;
1445 }
1446
1447
2/2
✓ Branch 0 taken 660 times.
✓ Branch 1 taken 3 times.
 663 if (pkt_type == AudioPacketTypeMultitrack) {
1448 660 uint8_t types = avio_r8(s->pb);
1449 660 multitrack_type = types & 0xF0;
1450 660 pkt_type = types & 0xF;
1451
1452 660 multitrack = 1;
1453 660 size--;
1454 }
1455
1456 663 codec_id = avio_rb32(s->pb);
1457 663 size -= 4;
1458
1459
2/2
✓ Branch 0 taken 660 times.
✓ Branch 1 taken 3 times.
 663 if (multitrack) {
1460 660 track_idx = avio_r8(s->pb);
1461 660 size--;
1462 }
1463 }
1464
2/2
✓ Branch 0 taken 2977 times.
✓ Branch 1 taken 40 times.
 3017 } else if (type == FLV_TAG_TYPE_VIDEO) {
1465 2977 stream_type = FLV_STREAM_TYPE_VIDEO;
1466 2977 flags = avio_r8(s->pb);
1467 2977 codec_id = flags & FLV_VIDEO_CODECID_MASK;
1468 /*
1469 * Reference Enhancing FLV 2023-03-v1.0.0-B.8
1470 * https://github.com/veovera/enhanced-rtmp/blob/main/enhanced-rtmp-v1.pdf
1471 * */
1472 2977 enhanced_flv = (flags >> 7) & 1;
1473
2/2
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✓ Branch 1 taken 2301 times.
 2977 pkt_type = enhanced_flv ? codec_id : 0;
1474 2977 size--;
1475
1476
1/2
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✓ Branch 1 taken 2977 times.
 2977 while (pkt_type == PacketTypeModEx) {
1477 ✗ ret = flv_parse_mod_ex_data(s, &pkt_type, &size, &dts);
1478 ✗ if (ret < 0)
1479 ✗ goto leave;
1480 }
1481
1482
4/4
✓ Branch 0 taken 676 times.
✓ Branch 1 taken 2301 times.
✓ Branch 2 taken 660 times.
✓ Branch 3 taken 16 times.
 2977 if (enhanced_flv && pkt_type != PacketTypeMetadata &&
1483
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 660 times.
 660 (flags & FLV_VIDEO_FRAMETYPE_MASK) == FLV_FRAME_VIDEO_INFO_CMD)
1484 ✗ goto skip;
1485
1486
2/2
✓ Branch 0 taken 450 times.
✓ Branch 1 taken 2527 times.
 2977 if (pkt_type == PacketTypeMultitrack) {
1487 450 uint8_t types = avio_r8(s->pb);
1488 450 multitrack_type = types & 0xF0;
1489 450 pkt_type = types & 0xF;
1490
1491 450 multitrack = 1;
1492 450 size--;
1493 }
1494
1495
2/2
✓ Branch 0 taken 676 times.
✓ Branch 1 taken 2301 times.
 2977 if (enhanced_flv) {
1496 676 codec_id = avio_rb32(s->pb);
1497 676 size -= 4;
1498 }
1499
2/2
✓ Branch 0 taken 450 times.
✓ Branch 1 taken 2527 times.
 2977 if (multitrack) {
1500 450 track_idx = avio_r8(s->pb);
1501 450 size--;
1502 }
1503
1504
4/4
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✓ Branch 1 taken 2301 times.
✓ Branch 2 taken 16 times.
✓ Branch 3 taken 660 times.
 2977 if (enhanced_flv && (flags & FLV_VIDEO_FRAMETYPE_MASK) == FLV_FRAME_VIDEO_INFO_CMD) {
1505
1/2
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✗ Branch 1 not taken.
 16 if (pkt_type == PacketTypeMetadata) {
1506 16 ret = flv_parse_video_color_info(s, st, next);
1507
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 16 times.
 16 if (ret < 0)
1508 ✗ goto leave;
1509 }
1510 16 goto skip;
1511
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 2961 times.
 2961 } else if ((flags & FLV_VIDEO_FRAMETYPE_MASK) == FLV_FRAME_VIDEO_INFO_CMD) {
1512 ✗ goto skip;
1513 }
1514
1/2
✓ Branch 0 taken 40 times.
✗ Branch 1 not taken.
 40 } else if (type == FLV_TAG_TYPE_META) {
1515 40 stream_type=FLV_STREAM_TYPE_SUBTITLE;
1516
1/2
✓ Branch 0 taken 40 times.
✗ Branch 1 not taken.
 40 if (size > 13 + 1 + 4) { // Header-type metadata stuff
1517 int type;
1518 40 meta_pos = avio_tell(s->pb);
1519 40 type = flv_read_metabody(s, next);
1520
2/6
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✓ Branch 3 taken 40 times.
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✗ Branch 5 not taken.
 40 if (type == 0 && dts == 0 || type < 0) {
1521
1/4
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✓ Branch 1 taken 40 times.
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✗ Branch 3 not taken.
 40 if (type < 0 && flv->validate_count &&
1522 ✗ flv->validate_index[0].pos > next &&
1523 ✗ flv->validate_index[0].pos - 4 < next) {
1524 ✗ av_log(s, AV_LOG_WARNING, "Adjusting next position due to index mismatch\n");
1525 ✗ next = flv->validate_index[0].pos - 4;
1526 }
1527 40 goto skip;
1528 ✗ } else if (type == TYPE_ONTEXTDATA) {
1529 ✗ avpriv_request_sample(s, "OnTextData packet");
1530 ✗ return flv_data_packet(s, pkt, dts, next);
1531 ✗ } else if (type == TYPE_ONCAPTION) {
1532 ✗ return flv_data_packet(s, pkt, dts, next);
1533 ✗ } else if (type == TYPE_UNKNOWN) {
1534 ✗ stream_type = FLV_STREAM_TYPE_DATA;
1535 }
1536 ✗ avio_seek(s->pb, meta_pos, SEEK_SET);
1537 }
1538 } else {
1539 ✗ av_log(s, AV_LOG_DEBUG,
1540 "Skipping flv packet: type %d, size %d, flags %d.\n",
1541 type, size, flags);
1542 56 skip:
1543
1/2
✗ Branch 1 not taken.
✓ Branch 2 taken 56 times.
 56 if (avio_seek(s->pb, next, SEEK_SET) != next) {
1544 // This can happen if flv_read_metabody above read past
1545 // next, on a non-seekable input, and the preceding data has
1546 // been flushed out from the IO buffer.
1547 ✗ av_log(s, AV_LOG_ERROR, "Unable to seek to the next packet\n");
1548 ✗ return AVERROR_INVALIDDATA;
1549 }
1550 56 ret = FFERROR_REDO;
1551 56 goto leave;
1552 }
1553
1554 /* skip empty data packets */
1555
2/2
✓ Branch 0 taken 4 times.
✓ Branch 1 taken 6224 times.
 6228 if (!size) {
1556 4 ret = FFERROR_REDO;
1557 4 goto leave;
1558 }
1559
1560 ✗ for (;;) {
1561 6224 int track_size = size;
1562
1563
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 6224 times.
 6224 if (multitrack_type != MultitrackTypeOneTrack) {
1564 ✗ track_size = avio_rb24(s->pb);
1565 ✗ size -= 3;
1566 }
1567
1568 /* now find stream */
1569
2/2
✓ Branch 0 taken 13986 times.
✓ Branch 1 taken 70 times.
 14056 for (i = 0; i < s->nb_streams; i++) {
1570 13986 st = s->streams[i];
1571
2/2
✓ Branch 0 taken 8803 times.
✓ Branch 1 taken 5183 times.
 13986 if (stream_type == FLV_STREAM_TYPE_AUDIO) {
1572
2/2
✓ Branch 0 taken 4905 times.
✓ Branch 1 taken 3898 times.
 8803 if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO &&
1573
3/4
✓ Branch 0 taken 4905 times.
✗ Branch 1 not taken.
✓ Branch 3 taken 3461 times.
✓ Branch 4 taken 1444 times.
 4905 (s->audio_codec_id || flv_same_audio_codec(st->codecpar, flags, codec_id)) &&
1574
2/2
✓ Branch 0 taken 3239 times.
✓ Branch 1 taken 222 times.
 3461 st->id == track_idx)
1575 3239 break;
1576
1/2
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✗ Branch 1 not taken.
 5183 } else if (stream_type == FLV_STREAM_TYPE_VIDEO) {
1577
2/2
✓ Branch 0 taken 4049 times.
✓ Branch 1 taken 1134 times.
 5183 if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO &&
1578
4/4
✓ Branch 0 taken 3984 times.
✓ Branch 1 taken 65 times.
✓ Branch 3 taken 2967 times.
✓ Branch 4 taken 1017 times.
 4049 (s->video_codec_id || flv_same_video_codec(st->codecpar, codec_id)) &&
1579
2/2
✓ Branch 0 taken 2915 times.
✓ Branch 1 taken 117 times.
 3032 st->id == track_idx)
1580 2915 break;
1581 ✗ } else if (stream_type == FLV_STREAM_TYPE_SUBTITLE) {
1582 ✗ if (st->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE)
1583 ✗ break;
1584 ✗ } else if (stream_type == FLV_STREAM_TYPE_DATA) {
1585 ✗ if (st->codecpar->codec_type == AVMEDIA_TYPE_DATA)
1586 ✗ break;
1587 }
1588 }
1589
2/2
✓ Branch 0 taken 70 times.
✓ Branch 1 taken 6154 times.
 6224 if (i == s->nb_streams) {
1590 static const enum AVMediaType stream_types[] = {AVMEDIA_TYPE_VIDEO, AVMEDIA_TYPE_AUDIO, AVMEDIA_TYPE_SUBTITLE, AVMEDIA_TYPE_DATA};
1591 70 st = create_stream(s, stream_types[stream_type], track_idx);
1592
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 70 times.
 70 if (!st)
1593 ✗ return AVERROR(ENOMEM);
1594 }
1595 6224 av_log(s, AV_LOG_TRACE, "%d %X %d \n", stream_type, flags, st->discard);
1596
1597
1/2
✓ Branch 0 taken 6224 times.
✗ Branch 1 not taken.
 6224 if (flv->time_pos <= pos) {
1598 6224 dts += flv->time_offset;
1599 }
1600
1601
1/2
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✗ Branch 1 not taken.
 6224 if ((s->pb->seekable & AVIO_SEEKABLE_NORMAL) &&
1602
4/4
✓ Branch 0 taken 4741 times.
✓ Branch 1 taken 1483 times.
✓ Branch 2 taken 2316 times.
✓ Branch 3 taken 2425 times.
 6224 ((flags & FLV_VIDEO_FRAMETYPE_MASK) == FLV_FRAME_KEY ||
1603 stream_type == FLV_STREAM_TYPE_AUDIO))
1604 3799 av_add_index_entry(st, pos, dts, track_size, 0, AVINDEX_KEYFRAME);
1605
1606
5/6
✓ Branch 0 taken 288 times.
✓ Branch 1 taken 5936 times.
✓ Branch 2 taken 278 times.
✓ Branch 3 taken 10 times.
✗ Branch 4 not taken.
✓ Branch 5 taken 278 times.
 6224 if ((st->discard >= AVDISCARD_NONKEY && !((flags & FLV_VIDEO_FRAMETYPE_MASK) == FLV_FRAME_KEY || stream_type == FLV_STREAM_TYPE_AUDIO)) ||
1607
3/6
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✓ Branch 1 taken 5936 times.
✗ Branch 2 not taken.
✓ Branch 3 taken 10 times.
✗ Branch 4 not taken.
✗ Branch 5 not taken.
 5946 (st->discard >= AVDISCARD_BIDIR && ((flags & FLV_VIDEO_FRAMETYPE_MASK) == FLV_FRAME_DISP_INTER && stream_type == FLV_STREAM_TYPE_VIDEO)) ||
1608
2/2
✓ Branch 0 taken 10 times.
✓ Branch 1 taken 5936 times.
 5946 st->discard >= AVDISCARD_ALL) {
1609 288 avio_seek(s->pb, next, SEEK_SET);
1610 288 ret = FFERROR_REDO;
1611 288 goto leave;
1612 }
1613
1614 // if not streamed and no duration from metadata then seek to end to find
1615 // the duration from the timestamps
1616
1/2
✓ Branch 0 taken 5936 times.
✗ Branch 1 not taken.
 5936 if ((s->pb->seekable & AVIO_SEEKABLE_NORMAL) &&
1617
2/4
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✗ Branch 1 not taken.
✗ Branch 2 not taken.
✓ Branch 3 taken 5936 times.
 5936 (!s->duration || s->duration == AV_NOPTS_VALUE) &&
1618 ✗ !flv->searched_for_end) {
1619 int final_size;
1620 ✗ const int64_t pos = avio_tell(s->pb);
1621 // Read the last 4 bytes of the file, this should be the size of the
1622 // previous FLV tag. Use the timestamp of its payload as duration.
1623 ✗ int64_t fsize = avio_size(s->pb);
1624 ✗ retry_duration:
1625 ✗ avio_seek(s->pb, fsize - 4, SEEK_SET);
1626 ✗ final_size = avio_rb32(s->pb);
1627 ✗ if (final_size > 0 && final_size < fsize) {
1628 // Seek to the start of the last FLV tag at position (fsize - 4 - final_size)
1629 // but skip the byte indicating the type.
1630 ✗ avio_seek(s->pb, fsize - 3 - final_size, SEEK_SET);
1631 ✗ if (final_size == avio_rb24(s->pb) + 11) {
1632 ✗ uint32_t ts = avio_rb24(s->pb);
1633 ✗ ts |= (unsigned)avio_r8(s->pb) << 24;
1634 ✗ if (ts)
1635 ✗ s->duration = ts * (int64_t)AV_TIME_BASE / 1000;
1636 ✗ else if (fsize >= 8 && fsize - 8 >= final_size) {
1637 ✗ fsize -= final_size+4;
1638 ✗ goto retry_duration;
1639 }
1640 }
1641 }
1642
1643 ✗ avio_seek(s->pb, pos, SEEK_SET);
1644 ✗ flv->searched_for_end = 1;
1645 }
1646
1647
4/4
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✓ Branch 1 taken 2673 times.
✓ Branch 2 taken 2604 times.
✓ Branch 3 taken 659 times.
 8540 if (stream_type == FLV_STREAM_TYPE_AUDIO && !enhanced_flv) {
1648 int bits_per_coded_sample;
1649
2/2
✓ Branch 0 taken 906 times.
✓ Branch 1 taken 1698 times.
 2604 channels = (flags & FLV_AUDIO_CHANNEL_MASK) == FLV_STEREO ? 2 : 1;
1650 2604 sample_rate = 44100 << ((flags & FLV_AUDIO_SAMPLERATE_MASK) >>
1651 FLV_AUDIO_SAMPLERATE_OFFSET) >> 3;
1652
1/2
✓ Branch 0 taken 2604 times.
✗ Branch 1 not taken.
 2604 bits_per_coded_sample = (flags & FLV_AUDIO_SAMPLESIZE_MASK) ? 16 : 8;
1653
2/2
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✓ Branch 2 taken 12 times.
 2604 if (!av_channel_layout_check(&st->codecpar->ch_layout) ||
1654
1/2
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✗ Branch 1 not taken.
 2592 !st->codecpar->sample_rate ||
1655
1/2
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✓ Branch 1 taken 2592 times.
 2592 !st->codecpar->bits_per_coded_sample) {
1656 12 av_channel_layout_uninit(&st->codecpar->ch_layout);
1657 12 av_channel_layout_default(&st->codecpar->ch_layout, channels);
1658 12 st->codecpar->sample_rate = sample_rate;
1659 12 st->codecpar->bits_per_coded_sample = bits_per_coded_sample;
1660 }
1661
2/2
✓ Branch 0 taken 12 times.
✓ Branch 1 taken 2592 times.
 2604 if (!st->codecpar->codec_id) {
1662 12 ret = flv_set_audio_codec(s, st, st->codecpar,
1663 flags & FLV_AUDIO_CODECID_MASK);
1664
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 12 times.
 12 if (ret < 0)
1665 ✗ goto leave;
1666 12 flv->last_sample_rate =
1667 12 sample_rate = st->codecpar->sample_rate;
1668 12 flv->last_channels =
1669 12 channels = st->codecpar->ch_layout.nb_channels;
1670 } else {
1671 2592 AVCodecParameters *par = avcodec_parameters_alloc();
1672
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 2592 times.
 2592 if (!par) {
1673 ✗ ret = AVERROR(ENOMEM);
1674 ✗ goto leave;
1675 }
1676 2592 par->sample_rate = sample_rate;
1677 2592 par->bits_per_coded_sample = bits_per_coded_sample;
1678 2592 ret = flv_set_audio_codec(s, st, par, flags & FLV_AUDIO_CODECID_MASK);
1679
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 2592 times.
 2592 if (ret < 0)
1680 ✗ goto leave;
1681 2592 sample_rate = par->sample_rate;
1682 2592 avcodec_parameters_free(&par);
1683 }
1684
2/2
✓ Branch 0 taken 659 times.
✓ Branch 1 taken 2673 times.
 3332 } else if (stream_type == FLV_STREAM_TYPE_AUDIO) {
1685
2/2
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✓ Branch 1 taken 647 times.
 659 if (!st->codecpar->codec_id) {
1686
1/2
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✓ Branch 1 taken 12 times.
 12 ret = flv_set_audio_codec(s, st, st->codecpar,
1687 codec_id ? codec_id : (flags & FLV_AUDIO_CODECID_MASK));
1688
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 12 times.
 12 if (ret < 0)
1689 ✗ goto leave;
1690 }
1691
1692 // These are not signalled in the flags anymore
1693 659 channels = 0;
1694 659 sample_rate = 0;
1695
1696
2/2
✓ Branch 0 taken 16 times.
✓ Branch 1 taken 643 times.
 659 if (pkt_type == AudioPacketTypeMultichannelConfig) {
1697 16 int channel_order = avio_r8(s->pb);
1698 16 channels = avio_r8(s->pb);
1699 16 size -= 2;
1700 16 track_size -= 2;
1701
1702 16 av_channel_layout_uninit(&st->codecpar->ch_layout);
1703
1704
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 16 times.
 16 if (channel_order == AudioChannelOrderCustom) {
1705 ✗ ret = av_channel_layout_custom_init(&st->codecpar->ch_layout, channels);
1706 ✗ if (ret < 0)
1707 ✗ return ret;
1708
1709 ✗ for (i = 0; i < channels; i++) {
1710 ✗ uint8_t id = avio_r8(s->pb);
1711 ✗ size--;
1712 ✗ track_size--;
1713
1714 ✗ if (id < 18)
1715 ✗ st->codecpar->ch_layout.u.map[i].id = id;
1716 ✗ else if (id >= 18 && id <= 23)
1717 ✗ st->codecpar->ch_layout.u.map[i].id = id - 18 + AV_CHAN_LOW_FREQUENCY_2;
1718 ✗ else if (id == 0xFE)
1719 ✗ st->codecpar->ch_layout.u.map[i].id = AV_CHAN_UNUSED;
1720 else
1721 ✗ st->codecpar->ch_layout.u.map[i].id = AV_CHAN_UNKNOWN;
1722 }
1723
2/2
✓ Branch 0 taken 13 times.
✓ Branch 1 taken 3 times.
 16 } else if (channel_order == AudioChannelOrderNative) {
1724 13 uint64_t mask = avio_rb32(s->pb);
1725 13 size -= 4;
1726 13 track_size -= 4;
1727
1728 // The first 18 entries in the mask match ours, but the remaining 6 entries start at AV_CHAN_LOW_FREQUENCY_2
1729 13 mask = (mask & 0x3FFFF) | ((mask & 0xFC0000) << (AV_CHAN_LOW_FREQUENCY_2 - 18));
1730 13 ret = av_channel_layout_from_mask(&st->codecpar->ch_layout, mask);
1731
1/2
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✓ Branch 1 taken 13 times.
 13 if (ret < 0)
1732 ✗ return ret;
1733 } else {
1734 3 av_channel_layout_default(&st->codecpar->ch_layout, channels);
1735 }
1736
1737 16 av_log(s, AV_LOG_DEBUG, "Set channel data from MultiChannel info.\n");
1738
1739 16 goto next_track;
1740 }
1741
1/2
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✗ Branch 1 not taken.
 2673 } else if (stream_type == FLV_STREAM_TYPE_VIDEO) {
1742 2673 int sret = flv_set_video_codec(s, st, codec_id, 1);
1743
1/2
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✓ Branch 1 taken 2673 times.
 2673 if (sret < 0)
1744 ✗ return sret;
1745 2673 size -= sret;
1746 2673 track_size -= sret;
1747 ✗ } else if (stream_type == FLV_STREAM_TYPE_SUBTITLE) {
1748 ✗ st->codecpar->codec_id = AV_CODEC_ID_TEXT;
1749 ✗ } else if (stream_type == FLV_STREAM_TYPE_DATA) {
1750 ✗ st->codecpar->codec_id = AV_CODEC_ID_NONE; // Opaque AMF data
1751 }
1752
1753
2/2
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✓ Branch 1 taken 837 times.
 5920 if (st->codecpar->codec_id == AV_CODEC_ID_AAC ||
1754
2/2
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✓ Branch 1 taken 231 times.
 5083 st->codecpar->codec_id == AV_CODEC_ID_OPUS ||
1755
2/2
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✓ Branch 1 taken 52 times.
 4852 st->codecpar->codec_id == AV_CODEC_ID_FLAC ||
1756
2/2
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✓ Branch 1 taken 977 times.
 4800 st->codecpar->codec_id == AV_CODEC_ID_H264 ||
1757
1/2
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 3823 st->codecpar->codec_id == AV_CODEC_ID_MPEG4 ||
1758
2/2
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 3823 st->codecpar->codec_id == AV_CODEC_ID_HEVC ||
1759
2/2
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✓ Branch 1 taken 18 times.
 3596 st->codecpar->codec_id == AV_CODEC_ID_VVC ||
1760
2/2
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✓ Branch 1 taken 176 times.
 3578 st->codecpar->codec_id == AV_CODEC_ID_AV1 ||
1761
2/2
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✓ Branch 1 taken 3280 times.
 3402 st->codecpar->codec_id == AV_CODEC_ID_VP9) {
1762 2640 int type = 0;
1763
2/2
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✓ Branch 1 taken 1478 times.
 2640 if (enhanced_flv) {
1764 1162 type = pkt_type;
1765 } else {
1766 1478 type = avio_r8(s->pb);
1767 1478 size--;
1768 1478 track_size--;
1769 }
1770
1771
2/4
✓ Branch 0 taken 2640 times.
✗ Branch 1 not taken.
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✓ Branch 3 taken 2640 times.
 2640 if (size < 0 || track_size < 0) {
1772 ✗ ret = AVERROR_INVALIDDATA;
1773 ✗ goto leave;
1774 }
1775
1776
4/4
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✓ Branch 1 taken 1478 times.
✓ Branch 2 taken 660 times.
✓ Branch 3 taken 502 times.
 2640 if (enhanced_flv && stream_type == FLV_STREAM_TYPE_VIDEO &&
1777
2/2
✓ Branch 0 taken 16 times.
✓ Branch 1 taken 644 times.
 660 flv->meta_color_info_flag == FLV_COLOR_INFO_FLAG_GOT) {
1778 16 flv_update_video_color_info(s, st); // update av packet side data
1779 16 flv->meta_color_info_flag = FLV_COLOR_INFO_FLAG_NONE;
1780 }
1781
1782
1/2
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✗ Branch 1 not taken.
 2640 if (st->codecpar->codec_id == AV_CODEC_ID_MPEG4 ||
1783
2/2
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✓ Branch 1 taken 977 times.
 2640 ((st->codecpar->codec_id == AV_CODEC_ID_H264 ||
1784
2/2
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✓ Branch 1 taken 18 times.
 1663 st->codecpar->codec_id == AV_CODEC_ID_VVC ||
1785
4/4
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✓ Branch 1 taken 1418 times.
✓ Branch 2 taken 362 times.
✓ Branch 3 taken 860 times.
 2640 st->codecpar->codec_id == AV_CODEC_ID_HEVC) &&
1786
2/2
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✓ Branch 1 taken 85 times.
 362 (!enhanced_flv || type == PacketTypeCodedFrames))) {
1787
2/4
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✓ Branch 3 taken 1137 times.
 1137 if (size < 3 || track_size < 3) {
1788 ✗ ret = AVERROR_INVALIDDATA;
1789 ✗ goto leave;
1790 }
1791 // sign extension
1792 1137 int32_t cts = (avio_rb24(s->pb) + 0xff800000) ^ 0xff800000;
1793 1137 pts = av_sat_add64(dts, cts);
1794
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 1137 times.
 1137 if (cts < 0) { // dts might be wrong
1795 ✗ if (!flv->wrong_dts)
1796 ✗ av_log(s, AV_LOG_WARNING,
1797 "Negative cts, previous timestamps might be wrong.\n");
1798 ✗ flv->wrong_dts = 1;
1799
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 1137 times.
 1137 } else if (FFABS(dts - pts) > 1000*60*15) {
1800 ✗ av_log(s, AV_LOG_WARNING,
1801 "invalid timestamps %"PRId64" %"PRId64"\n", dts, pts);
1802 ✗ dts = pts = AV_NOPTS_VALUE;
1803 }
1804 1137 size -= 3;
1805 1137 track_size -= 3;
1806 }
1807
6/6
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✓ Branch 1 taken 2597 times.
✓ Branch 2 taken 3 times.
✓ Branch 3 taken 40 times.
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✓ Branch 5 taken 1 times.
 2640 if (type == 0 && (!st->codecpar->extradata || st->codecpar->codec_id == AV_CODEC_ID_AAC ||
1808
3/4
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 2 st->codecpar->codec_id == AV_CODEC_ID_OPUS || st->codecpar->codec_id == AV_CODEC_ID_FLAC ||
1809
1/4
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 1 st->codecpar->codec_id == AV_CODEC_ID_H264 || st->codecpar->codec_id == AV_CODEC_ID_HEVC ||
1810 ✗ st->codecpar->codec_id == AV_CODEC_ID_VVC ||
1811 ✗ st->codecpar->codec_id == AV_CODEC_ID_AV1 || st->codecpar->codec_id == AV_CODEC_ID_VP9)) {
1812 AVDictionaryEntry *t;
1813
1814
2/2
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✓ Branch 1 taken 40 times.
 43 if (st->codecpar->extradata) {
1815
3/4
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✓ Branch 4 taken 3 times.
 3 if ((ret = flv_queue_extradata(flv, s->pb, multitrack ? track_idx : stream_type, track_size, multitrack)) < 0)
1816 ✗ return ret;
1817 3 ret = FFERROR_REDO;
1818 3 goto leave;
1819 }
1820
1/2
✗ Branch 1 not taken.
✓ Branch 2 taken 40 times.
 40 if ((ret = flv_get_extradata(s, st, track_size)) < 0)
1821 ✗ return ret;
1822
1823 /* Workaround for buggy Omnia A/XE encoder */
1824 40 t = av_dict_get(s->metadata, "Encoder", NULL, 0);
1825
5/6
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✓ Branch 5 taken 2 times.
 40 if (st->codecpar->codec_id == AV_CODEC_ID_AAC && t && !strcmp(t->value, "Omnia A/XE"))
1826 ✗ st->codecpar->extradata_size = 2;
1827
1828 40 ret = FFERROR_REDO;
1829 40 goto leave;
1830 }
1831 }
1832
1833 /* skip empty or broken data packets */
1834
3/4
✓ Branch 0 taken 5867 times.
✓ Branch 1 taken 10 times.
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✓ Branch 3 taken 5867 times.
 5877 if (size <= 0 || track_size < 0) {
1835 10 ret = FFERROR_REDO;
1836 10 goto leave;
1837 }
1838
1839 /* skip empty data track */
1840
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 5867 times.
 5867 if (!track_size)
1841 ✗ goto next_track;
1842
1843 5867 ret = av_get_packet(s->pb, pkt, track_size);
1844
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 5867 times.
 5867 if (ret < 0)
1845 ✗ return ret;
1846
1847 5867 track_size -= ret;
1848 5867 size -= ret;
1849
1850 5867 pkt->dts = dts;
1851
2/2
✓ Branch 0 taken 4748 times.
✓ Branch 1 taken 1119 times.
 5867 pkt->pts = pts == AV_NOPTS_VALUE ? dts : pts;
1852 5867 pkt->stream_index = st->index;
1853 5867 pkt->pos = pos;
1854
4/4
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✓ Branch 1 taken 1071 times.
✓ Branch 2 taken 2 times.
✓ Branch 3 taken 4794 times.
 5867 if (!multitrack && flv->new_extradata[stream_type]) {
1855 2 ret = av_packet_add_side_data(pkt, AV_PKT_DATA_NEW_EXTRADATA,
1856 flv->new_extradata[stream_type],
1857 2 flv->new_extradata_size[stream_type]);
1858
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 2 times.
 2 if (ret < 0)
1859 ✗ return ret;
1860
1861 2 flv->new_extradata[stream_type] = NULL;
1862 2 flv->new_extradata_size[stream_type] = 0;
1863
2/2
✓ Branch 0 taken 1071 times.
✓ Branch 1 taken 4794 times.
 5865 } else if (multitrack &&
1864
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 1071 times.
 1071 flv->mt_extradata_cnt > track_idx &&
1865 ✗ flv->mt_extradata[track_idx]) {
1866 ✗ ret = av_packet_add_side_data(pkt, AV_PKT_DATA_NEW_EXTRADATA,
1867 ✗ flv->mt_extradata[track_idx],
1868 ✗ flv->mt_extradata_sz[track_idx]);
1869 ✗ if (ret < 0)
1870 ✗ return ret;
1871
1872 ✗ flv->mt_extradata[track_idx] = NULL;
1873 ✗ flv->mt_extradata_sz[track_idx] = 0;
1874 }
1875
4/4
✓ Branch 0 taken 3231 times.
✓ Branch 1 taken 2636 times.
✓ Branch 2 taken 2598 times.
✓ Branch 3 taken 633 times.
 5867 if (stream_type == FLV_STREAM_TYPE_AUDIO && !enhanced_flv &&
1876
1/2
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✗ Branch 1 not taken.
 2598 (sample_rate != flv->last_sample_rate ||
1877
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 2598 times.
 2598 channels != flv->last_channels)) {
1878 ✗ flv->last_sample_rate = sample_rate;
1879 ✗ flv->last_channels = channels;
1880 ✗ ff_add_param_change(pkt, channels, 0, sample_rate, 0, 0);
1881 }
1882
1883
2/2
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✓ Branch 1 taken 3231 times.
 5867 if (stream_type == FLV_STREAM_TYPE_AUDIO ||
1884
3/4
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✗ Branch 3 not taken.
 2636 (flags & FLV_VIDEO_FRAMETYPE_MASK) == FLV_FRAME_KEY ||
1885
1/2
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✓ Branch 1 taken 2147 times.
 2147 stream_type == FLV_STREAM_TYPE_SUBTITLE ||
1886 stream_type == FLV_STREAM_TYPE_DATA)
1887 3720 pkt->flags |= AV_PKT_FLAG_KEY;
1888
1889 5867 ret = ff_buffer_packet(s, pkt);
1890
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 5867 times.
 5867 if (ret < 0)
1891 ✗ return ret;
1892 5867 res = FFERROR_REDO;
1893
1894 5883 next_track:
1895
2/2
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✓ Branch 1 taken 5882 times.
 5883 if (track_size) {
1896 1 av_log(s, AV_LOG_WARNING, "Track size mismatch: %d!\n", track_size);
1897
1/2
✗ Branch 1 not taken.
✓ Branch 2 taken 1 times.
 1 if (!avio_feof(s->pb)) {
1898 ✗ if (track_size > 0) {
1899 ✗ avio_skip(s->pb, track_size);
1900 ✗ size -= track_size;
1901 } else {
1902 /* We have somehow read more than the track had to offer, leave and re-sync */
1903 ✗ ret = FFERROR_REDO;
1904 ✗ goto leave;
1905 }
1906 }
1907 }
1908
1909
2/2
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✓ Branch 1 taken 1 times.
 5883 if (!size)
1910 5882 break;
1911
1912
1/2
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✗ Branch 1 not taken.
 1 if (multitrack_type == MultitrackTypeOneTrack) {
1913 1 av_log(s, AV_LOG_ERROR, "Attempted to read next track in single-track mode.\n");
1914 1 ret = FFERROR_REDO;
1915 1 goto leave;
1916 }
1917
1918 ✗ if (multitrack_type == MultitrackTypeManyTracksManyCodecs) {
1919 ✗ codec_id = avio_rb32(s->pb);
1920 ✗ size -= 4;
1921 }
1922
1923 ✗ track_idx = avio_r8(s->pb);
1924 ✗ size--;
1925
1926 ✗ if (avio_feof(s->pb)) {
1927 ✗ av_log(s, AV_LOG_WARNING, "Premature EOF\n");
1928 /* return REDO so that any potentially queued up packages can be drained first */
1929 ✗ return FFERROR_REDO;
1930 }
1931 }
1932
1933 5882 ret = 0;
1934 6284 leave:
1935 6284 last = avio_rb32(s->pb);
1936
1/2
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 6284 if (!flv->trust_datasize) {
1937
4/6
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 6285 if (last != orig_size + 11 && last != orig_size + 10 &&
1938
0/2
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✗ Branch 2 not taken.
 1 !avio_feof(s->pb) &&
1939 ✗ (last != orig_size || !last) && last != flv->sum_flv_tag_size &&
1940 ✗ !flv->broken_sizes) {
1941 ✗ av_log(s, AV_LOG_ERROR, "Packet mismatch %d %d %"PRId64"\n", last, orig_size + 11, flv->sum_flv_tag_size);
1942 ✗ avio_seek(s->pb, pos + 1, SEEK_SET);
1943 ✗ ret = resync(s);
1944 ✗ av_packet_unref(pkt);
1945 ✗ if (ret >= 0) {
1946 ✗ goto retry;
1947 }
1948 }
1949 }
1950
1951
2/2
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✓ Branch 1 taken 402 times.
 6284 if (ret >= 0)
1952 5882 flv->last_ts = pkt->dts;
1953
1954
2/2
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✓ Branch 1 taken 5882 times.
 6284 return ret ? ret : res;
1955 }
1956
1957 289 static int flv_read_seek(AVFormatContext *s, int stream_index,
1958 int64_t ts, int flags)
1959 {
1960 289 FLVContext *flv = s->priv_data;
1961 289 flv->validate_count = 0;
1962 289 return avio_seek_time(s->pb, stream_index, ts, flags);
1963 }
1964
1965 #define OFFSET(x) offsetof(FLVContext, x)
1966 #define VD AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_DECODING_PARAM
1967 static const AVOption options[] = {
1968 { "flv_metadata", "Allocate streams according to the onMetaData array", OFFSET(trust_metadata), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, VD },
1969 { "flv_full_metadata", "Dump full metadata of the onMetadata", OFFSET(dump_full_metadata), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, VD },
1970 { "flv_ignore_prevtag", "Ignore the Size of previous tag", OFFSET(trust_datasize), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, VD },
1971 { NULL }
1972 };
1973
1974 static const AVClass flv_kux_class = {
1975 .class_name = "(live) flv/kux demuxer",
1976 .item_name = av_default_item_name,
1977 .option = options,
1978 .version = LIBAVUTIL_VERSION_INT,
1979 };
1980
1981 const FFInputFormat ff_flv_demuxer = {
1982 .p.name = "flv",
1983 .p.long_name = NULL_IF_CONFIG_SMALL("FLV (Flash Video)"),
1984 .p.extensions = "flv",
1985 .p.priv_class = &flv_kux_class,
1986 .priv_data_size = sizeof(FLVContext),
1987 .read_probe = flv_probe,
1988 .read_header = flv_read_header,
1989 .read_packet = flv_read_packet,
1990 .read_seek = flv_read_seek,
1991 .read_close = flv_read_close,
1992 };
1993
1994 const FFInputFormat ff_live_flv_demuxer = {
1995 .p.name = "live_flv",
1996 .p.long_name = NULL_IF_CONFIG_SMALL("live RTMP FLV (Flash Video)"),
1997 .p.extensions = "flv",
1998 .p.priv_class = &flv_kux_class,
1999 .p.flags = AVFMT_TS_DISCONT,
2000 .priv_data_size = sizeof(FLVContext),
2001 .read_probe = live_flv_probe,
2002 .read_header = flv_read_header,
2003 .read_packet = flv_read_packet,
2004 .read_seek = flv_read_seek,
2005 .read_close = flv_read_close,
2006 };
2007
2008 const FFInputFormat ff_kux_demuxer = {
2009 .p.name = "kux",
2010 .p.long_name = NULL_IF_CONFIG_SMALL("KUX (YouKu)"),
2011 .p.extensions = "kux",
2012 .p.priv_class = &flv_kux_class,
2013 .priv_data_size = sizeof(FLVContext),
2014 .read_probe = kux_probe,
2015 .read_header = flv_read_header,
2016 .read_packet = flv_read_packet,
2017 .read_seek = flv_read_seek,
2018 .read_close = flv_read_close,
2019 };
2020