FFmpeg
electronicarts.c
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1 /* Electronic Arts Multimedia File Demuxer
2  * Copyright (c) 2004 The FFmpeg project
3  * Copyright (c) 2006-2008 Peter Ross
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  * Electronic Arts Multimedia file demuxer (WVE/UV2/etc.)
25  * by Robin Kay (komadori at gekkou.co.uk)
26  */
27 
28 #include <inttypes.h>
29 
30 #include "libavutil/intreadwrite.h"
31 #include "libavutil/opt.h"
32 #include "avformat.h"
33 #include "internal.h"
34 
35 #define SCHl_TAG MKTAG('S', 'C', 'H', 'l')
36 #define SEAD_TAG MKTAG('S', 'E', 'A', 'D') /* Sxxx header */
37 #define SNDC_TAG MKTAG('S', 'N', 'D', 'C') /* Sxxx data */
38 #define SEND_TAG MKTAG('S', 'E', 'N', 'D') /* Sxxx end */
39 #define SHEN_TAG MKTAG('S', 'H', 'E', 'N') /* SxEN header */
40 #define SDEN_TAG MKTAG('S', 'D', 'E', 'N') /* SxEN data */
41 #define SEEN_TAG MKTAG('S', 'E', 'E', 'N') /* SxEN end */
42 #define ISNh_TAG MKTAG('1', 'S', 'N', 'h') /* 1SNx header */
43 #define EACS_TAG MKTAG('E', 'A', 'C', 'S')
44 #define ISNd_TAG MKTAG('1', 'S', 'N', 'd') /* 1SNx data */
45 #define ISNe_TAG MKTAG('1', 'S', 'N', 'e') /* 1SNx end */
46 #define PT00_TAG MKTAG('P', 'T', 0x0, 0x0)
47 #define GSTR_TAG MKTAG('G', 'S', 'T', 'R')
48 #define SCDl_TAG MKTAG('S', 'C', 'D', 'l')
49 #define SCEl_TAG MKTAG('S', 'C', 'E', 'l')
50 #define kVGT_TAG MKTAG('k', 'V', 'G', 'T') /* TGV I-frame */
51 #define fVGT_TAG MKTAG('f', 'V', 'G', 'T') /* TGV P-frame */
52 #define mTCD_TAG MKTAG('m', 'T', 'C', 'D') /* MDEC */
53 #define MADk_TAG MKTAG('M', 'A', 'D', 'k') /* MAD I-frame */
54 #define MADm_TAG MKTAG('M', 'A', 'D', 'm') /* MAD P-frame */
55 #define MADe_TAG MKTAG('M', 'A', 'D', 'e') /* MAD lqp-frame */
56 #define MPCh_TAG MKTAG('M', 'P', 'C', 'h') /* MPEG-2 */
57 #define TGQs_TAG MKTAG('T', 'G', 'Q', 's') /* TGQ I-frame (appears in .TGQ files) */
58 #define pQGT_TAG MKTAG('p', 'Q', 'G', 'T') /* TGQ I-frame (appears in .UV files) */
59 #define pIQT_TAG MKTAG('p', 'I', 'Q', 'T') /* TQI/UV2 I-frame (.UV2/.WVE) */
60 #define MVhd_TAG MKTAG('M', 'V', 'h', 'd')
61 #define MV0K_TAG MKTAG('M', 'V', '0', 'K')
62 #define MV0F_TAG MKTAG('M', 'V', '0', 'F')
63 #define AVhd_TAG MKTAG('A', 'V', 'h', 'd')
64 #define AV0K_TAG MKTAG('A', 'V', '0', 'K')
65 #define AV0F_TAG MKTAG('A', 'V', '0', 'F')
66 #define MVIh_TAG MKTAG('M', 'V', 'I', 'h') /* CMV header */
67 #define MVIf_TAG MKTAG('M', 'V', 'I', 'f') /* CMV I-frame */
68 #define AVP6_TAG MKTAG('A', 'V', 'P', '6')
69 
70 typedef struct VideoProperties {
73  int width, height;
74  int nb_frames;
77 
78 typedef struct EaDemuxContext {
79  const AVClass *class;
80 
82 
84 
87 
88  int bytes;
92 
93  int platform;
96 
97 static uint32_t read_arbitrary(AVIOContext *pb)
98 {
99  uint8_t size, byte;
100  int i;
101  uint32_t word;
102 
103  size = avio_r8(pb);
104 
105  word = 0;
106  for (i = 0; i < size; i++) {
107  byte = avio_r8(pb);
108  word <<= 8;
109  word |= byte;
110  }
111 
112  return word;
113 }
114 
116 {
117  EaDemuxContext *ea = s->priv_data;
118  AVIOContext *pb = s->pb;
119  int in_header = 1;
120  int compression_type = -1, revision = -1, revision2 = -1;
121 
122  ea->bytes = 2;
123  ea->sample_rate = -1;
124  ea->num_channels = 1;
125 
126  while (!avio_feof(pb) && in_header) {
127  int in_subheader;
128  uint8_t byte;
129  byte = avio_r8(pb);
130 
131  switch (byte) {
132  case 0xFD:
133  av_log(s, AV_LOG_DEBUG, "entered audio subheader\n");
134  in_subheader = 1;
135  while (!avio_feof(pb) && in_subheader) {
136  uint8_t subbyte;
137  subbyte = avio_r8(pb);
138 
139  switch (subbyte) {
140  case 0x80:
141  revision = read_arbitrary(pb);
143  "revision (element 0x80) set to 0x%08x\n", revision);
144  break;
145  case 0x82:
146  ea->num_channels = read_arbitrary(pb);
148  "num_channels (element 0x82) set to 0x%08x\n",
149  ea->num_channels);
150  break;
151  case 0x83:
152  compression_type = read_arbitrary(pb);
154  "compression_type (element 0x83) set to 0x%08x\n",
155  compression_type);
156  break;
157  case 0x84:
158  ea->sample_rate = read_arbitrary(pb);
160  "sample_rate (element 0x84) set to %i\n",
161  ea->sample_rate);
162  break;
163  case 0x85:
164  ea->num_samples = read_arbitrary(pb);
166  "num_samples (element 0x85) set to 0x%08x\n",
167  ea->num_samples);
168  break;
169  case 0x8A:
171  "element 0x%02x set to 0x%08"PRIx32"\n",
172  subbyte, read_arbitrary(pb));
173  av_log(s, AV_LOG_DEBUG, "exited audio subheader\n");
174  in_subheader = 0;
175  break;
176  case 0xA0:
177  revision2 = read_arbitrary(pb);
179  "revision2 (element 0xA0) set to 0x%08x\n",
180  revision2);
181  break;
182  case 0xFF:
184  "end of header block reached (within audio subheader)\n");
185  in_subheader = 0;
186  in_header = 0;
187  break;
188  default:
190  "element 0x%02x set to 0x%08"PRIx32"\n",
191  subbyte, read_arbitrary(pb));
192  break;
193  }
194  }
195  break;
196  case 0xFF:
197  av_log(s, AV_LOG_DEBUG, "end of header block reached\n");
198  in_header = 0;
199  break;
200  default:
202  "header element 0x%02x set to 0x%08"PRIx32"\n",
203  byte, read_arbitrary(pb));
204  break;
205  }
206  }
207 
208  switch (compression_type) {
209  case 0:
211  break;
212  case 7:
214  break;
215  case -1:
216  switch (revision) {
217  case 1:
219  break;
220  case 2:
222  break;
223  case 3:
225  break;
226  case -1:
227  break;
228  default:
229  avpriv_request_sample(s, "stream type; revision=%i", revision);
230  return 0;
231  }
232  switch (revision2) {
233  case 8:
235  break;
236  case 10:
237  switch (revision) {
238  case -1:
239  case 2: ea->audio_codec = AV_CODEC_ID_ADPCM_EA_R1; break;
240  case 3: ea->audio_codec = AV_CODEC_ID_ADPCM_EA_R2; break;
241  default:
242  avpriv_request_sample(s, "stream type; revision=%i, revision2=%i", revision, revision2);
243  return 0;
244  }
245  break;
246  case 15:
247  case 16:
249  break;
250  case -1:
251  break;
252  default:
254  avpriv_request_sample(s, "stream type; revision2=%i", revision2);
255  return 0;
256  }
257  break;
258  default:
260  "stream type; compression_type=%i",
261  compression_type);
262  return 0;
263  }
264 
265  if (ea->audio_codec == AV_CODEC_ID_NONE && ea->platform == 0x01)
267  if (ea->sample_rate == -1)
268  ea->sample_rate = revision == 3 ? 48000 : 22050;
269 
270  return 1;
271 }
272 
274 {
275  EaDemuxContext *ea = s->priv_data;
276  AVIOContext *pb = s->pb;
277  int compression_type;
278 
279  ea->sample_rate = ea->big_endian ? avio_rb32(pb) : avio_rl32(pb);
280  ea->bytes = avio_r8(pb); /* 1=8-bit, 2=16-bit */
281  ea->num_channels = avio_r8(pb);
282  compression_type = avio_r8(pb);
283  avio_skip(pb, 13);
284 
285  switch (compression_type) {
286  case 0:
287  switch (ea->bytes) {
288  case 1:
290  break;
291  case 2:
293  break;
294  }
295  break;
296  case 1:
298  ea->bytes = 1;
299  break;
300  case 2:
302  break;
303  default:
305  "stream type; audio compression_type=%i",
306  compression_type);
307  }
308 }
309 
311 {
312  EaDemuxContext *ea = s->priv_data;
313  AVIOContext *pb = s->pb;
314 
315  ea->sample_rate = avio_rl32(pb);
316  ea->bytes = avio_rl32(pb); /* 1=8-bit, 2=16-bit */
317  ea->num_channels = avio_rl32(pb);
319 }
320 
322 {
323  AVIOContext *pb = s->pb;
324  avio_skip(pb, 4);
325  video->width = avio_rl16(pb);
326  video->height = avio_rl16(pb);
327  video->time_base = (AVRational) { 1, 15 };
328  video->codec = AV_CODEC_ID_MDEC;
329 }
330 
332 {
333  AVIOContext *pb = s->pb;
334 
335  avio_skip(pb, 8);
336  video->nb_frames = avio_rl32(pb);
337  avio_skip(pb, 4);
338  video->time_base.den = avio_rl32(pb);
339  video->time_base.num = avio_rl32(pb);
340  if (video->time_base.den <= 0 || video->time_base.num <= 0) {
341  av_log(s, AV_LOG_ERROR, "Timebase is invalid\n");
342  return AVERROR_INVALIDDATA;
343  }
344  video->codec = AV_CODEC_ID_VP6;
345 
346  return 1;
347 }
348 
350 {
351  int fps;
352 
353  avio_skip(s->pb, 10);
354  fps = avio_rl16(s->pb);
355  if (fps)
356  video->time_base = (AVRational) { 1, fps };
357  video->codec = AV_CODEC_ID_CMV;
358 }
359 
360 /* Process EA file header.
361  * Return 1 if the EA file is valid and successfully opened, 0 otherwise. */
363 {
364  uint32_t blockid, size = 0;
365  EaDemuxContext *ea = s->priv_data;
366  AVIOContext *pb = s->pb;
367  int i;
368 
369  for (i = 0; i < 5 && (!ea->audio_codec || !ea->video.codec); i++) {
370  uint64_t startpos = avio_tell(pb);
371  int err = 0;
372 
373  blockid = avio_rl32(pb);
374  size = avio_rl32(pb);
375  if (i == 0)
376  ea->big_endian = size > av_bswap32(size);
377  if (ea->big_endian)
378  size = av_bswap32(size);
379 
380  if (size < 8) {
381  av_log(s, AV_LOG_ERROR, "chunk size too small\n");
382  return AVERROR_INVALIDDATA;
383  }
384 
385  switch (blockid) {
386  case ISNh_TAG:
387  if (avio_rl32(pb) != EACS_TAG) {
388  avpriv_request_sample(s, "unknown 1SNh headerid");
389  return 0;
390  }
392  break;
393 
394  case SCHl_TAG:
395  case SHEN_TAG:
396  blockid = avio_rl32(pb);
397  if (blockid == GSTR_TAG) {
398  avio_skip(pb, 4);
399  } else if ((blockid & 0xFF) != (PT00_TAG & 0xFF)) {
400  blockid = avio_rl32(pb);
401  }
402  ea->platform = (blockid >> 16) & 0xFF;
404  break;
405 
406  case SEAD_TAG:
408  break;
409 
410  case MVIh_TAG:
412  break;
413 
414  case kVGT_TAG:
416  break;
417 
418  case mTCD_TAG:
420  break;
421 
422  case MPCh_TAG:
424  break;
425 
426  case pQGT_TAG:
427  case TGQs_TAG:
429  ea->video.time_base = (AVRational) { 1, 15 };
430  break;
431 
432  case pIQT_TAG:
434  ea->video.time_base = (AVRational) { 1, 15 };
435  break;
436 
437  case MADk_TAG:
439  avio_skip(pb, 6);
440  ea->video.time_base = (AVRational) { avio_rl16(pb), 1000 };
441  break;
442 
443  case MVhd_TAG:
444  err = process_video_header_vp6(s, &ea->video);
445  break;
446 
447  case AVhd_TAG:
448  err = process_video_header_vp6(s, &ea->alpha);
449  if (err >= 0 && ea->video.codec == AV_CODEC_ID_VP6 && ea->merge_alpha) {
450  ea->alpha.codec = 0;
452  }
453  break;
454  }
455 
456  if (err < 0) {
457  av_log(s, AV_LOG_ERROR, "error parsing header: %i\n", err);
458  return err;
459  }
460 
461  avio_seek(pb, startpos + size, SEEK_SET);
462  }
463 
464  avio_seek(pb, 0, SEEK_SET);
465 
466  return 1;
467 }
468 
469 static int ea_probe(const AVProbeData *p)
470 {
471  unsigned big_endian, size;
472 
473  switch (AV_RL32(&p->buf[0])) {
474  case ISNh_TAG:
475  case SCHl_TAG:
476  case SEAD_TAG:
477  case SHEN_TAG:
478  case kVGT_TAG:
479  case MADk_TAG:
480  case MPCh_TAG:
481  case MVhd_TAG:
482  case MVIh_TAG:
483  case AVP6_TAG:
484  break;
485  default:
486  return 0;
487  }
488  size = AV_RL32(&p->buf[4]);
489  big_endian = size > 0x000FFFFF;
490  if (big_endian)
491  size = av_bswap32(size);
492  if (size > 0xfffff || size < 8)
493  return 0;
494 
495  return AVPROBE_SCORE_MAX;
496 }
497 
499 {
500  AVStream *st;
501 
502  if (!video->codec)
503  return 0;
504 
505  /* initialize the video decoder stream */
506  st = avformat_new_stream(s, NULL);
507  if (!st)
508  return AVERROR(ENOMEM);
509  video->stream_index = st->index;
511  st->codecpar->codec_id = video->codec;
512  // parsing is necessary to make FFmpeg generate correct timestamps
515  st->codecpar->codec_tag = 0; /* no fourcc */
516  st->codecpar->width = video->width;
517  st->codecpar->height = video->height;
518  st->duration = st->nb_frames = video->nb_frames;
519  if (video->time_base.num)
520  avpriv_set_pts_info(st, 64, video->time_base.num, video->time_base.den);
521  st->r_frame_rate =
522  st->avg_frame_rate = av_inv_q(video->time_base);
523  return 0;
524 }
525 
527 {
528  EaDemuxContext *ea = s->priv_data;
529  AVStream *st;
530 
531  if (process_ea_header(s)<=0)
532  return AVERROR(EIO);
533 
534  if (init_video_stream(s, &ea->video) || init_video_stream(s, &ea->alpha))
535  return AVERROR(ENOMEM);
536 
537  if (ea->audio_codec) {
538  if (ea->num_channels <= 0 || ea->num_channels > 2) {
540  "Unsupported number of channels: %d\n", ea->num_channels);
541  goto no_audio;
542  }
543  if (ea->sample_rate <= 0) {
545  "Unsupported sample rate: %d\n", ea->sample_rate);
546  goto no_audio;
547  }
548  if (ea->bytes <= 0 || ea->bytes > 2) {
550  "Invalid number of bytes per sample: %d\n", ea->bytes);
551  goto no_audio;
552  }
553 
554  /* initialize the audio decoder stream */
555  st = avformat_new_stream(s, NULL);
556  if (!st)
557  return AVERROR(ENOMEM);
558  avpriv_set_pts_info(st, 33, 1, ea->sample_rate);
560  st->codecpar->codec_id = ea->audio_codec;
561  st->codecpar->codec_tag = 0; /* no tag */
563  st->codecpar->sample_rate = ea->sample_rate;
564  st->codecpar->bits_per_coded_sample = ea->bytes * 8;
565  st->codecpar->bit_rate = (int64_t)ea->num_channels *
566  st->codecpar->sample_rate *
568  st->codecpar->block_align = ea->num_channels *
570  ea->audio_stream_index = st->index;
571  st->start_time = 0;
572  return 0;
573  }
574 no_audio:
576 
577  if (!ea->video.codec)
578  return AVERROR_INVALIDDATA;
579  return 0;
580 }
581 
583 {
584  EaDemuxContext *ea = s->priv_data;
585  AVIOContext *pb = s->pb;
586  int partial_packet = 0;
587  int hit_end = 0;
588  unsigned int chunk_type, chunk_size;
589  int ret = 0, packet_read = 0, key = 0, vp6a;
590  int av_uninit(num_samples);
591 
592  while ((!packet_read && !hit_end) || partial_packet) {
593  chunk_type = avio_rl32(pb);
594  if (avio_feof(pb))
595  return AVERROR_EOF;
596  chunk_size = ea->big_endian ? avio_rb32(pb) : avio_rl32(pb);
597  if (chunk_size < 8)
598  return AVERROR_INVALIDDATA;
599  chunk_size -= 8;
600 
601  switch (chunk_type) {
602  /* audio data */
603  case ISNh_TAG:
604  /* header chunk also contains data; skip over the header portion */
605  if (chunk_size < 32)
606  return AVERROR_INVALIDDATA;
607  avio_skip(pb, 32);
608  chunk_size -= 32;
609  case ISNd_TAG:
610  case SCDl_TAG:
611  case SNDC_TAG:
612  case SDEN_TAG:
613  if (!ea->audio_codec) {
614  avio_skip(pb, chunk_size);
615  break;
616  } else if (ea->audio_codec == AV_CODEC_ID_PCM_S16LE_PLANAR ||
617  ea->audio_codec == AV_CODEC_ID_MP3) {
618  if (chunk_size < 12)
619  return AVERROR_INVALIDDATA;
620  num_samples = avio_rl32(pb);
621  avio_skip(pb, 8);
622  chunk_size -= 12;
623  } else if (ea->audio_codec == AV_CODEC_ID_ADPCM_PSX) {
624  if (chunk_size < 8)
625  return AVERROR_INVALIDDATA;
626  avio_skip(pb, 8);
627  chunk_size -= 8;
628  }
629 
630  if (partial_packet) {
631  avpriv_request_sample(s, "video header followed by audio packet");
633  partial_packet = 0;
634  }
635 
636  if (!chunk_size)
637  continue;
638 
639  ret = av_get_packet(pb, pkt, chunk_size);
640  if (ret < 0)
641  return ret;
643 
644  switch (ea->audio_codec) {
650  if (pkt->size < 4) {
651  av_log(s, AV_LOG_ERROR, "Packet is too short\n");
652  return AVERROR_INVALIDDATA;
653  }
655  pkt->duration = AV_RB32(pkt->data);
656  else
657  pkt->duration = AV_RL32(pkt->data);
658  break;
660  pkt->duration = ret * 2 / ea->num_channels;
661  break;
663  case AV_CODEC_ID_MP3:
664  pkt->duration = num_samples;
665  break;
667  pkt->duration = chunk_size / (16 * ea->num_channels) * 28;
668  break;
669  default:
670  pkt->duration = chunk_size / (ea->bytes * ea->num_channels);
671  }
672 
673  packet_read = 1;
674  break;
675 
676  /* ending tag */
677  case 0:
678  case ISNe_TAG:
679  case SCEl_TAG:
680  case SEND_TAG:
681  case SEEN_TAG:
682  while (!avio_feof(pb)) {
683  int tag = avio_rl32(pb);
684 
685  if (tag == ISNh_TAG ||
686  tag == SCHl_TAG ||
687  tag == SEAD_TAG ||
688  tag == SHEN_TAG) {
689  avio_skip(pb, -4);
690  break;
691  }
692  }
693  if (avio_feof(pb))
694  ret = AVERROR_EOF;
695  hit_end = 1;
696  break;
697 
698  case MVIh_TAG:
699  case kVGT_TAG:
700  case pQGT_TAG:
701  case TGQs_TAG:
702  case MADk_TAG:
704  case MVIf_TAG:
705  case fVGT_TAG:
706  case MADm_TAG:
707  case MADe_TAG:
708  if (chunk_size > INT_MAX - 8)
709  return AVERROR_INVALIDDATA;
710  avio_seek(pb, -8, SEEK_CUR); // include chunk preamble
711  chunk_size += 8;
712  goto get_video_packet;
713 
714  case mTCD_TAG:
715  if (chunk_size < 8)
716  return AVERROR_INVALIDDATA;
717 
718  avio_skip(pb, 8); // skip ea DCT header
719  chunk_size -= 8;
720  goto get_video_packet;
721 
722  case MV0K_TAG:
723  case AV0K_TAG:
724  case MPCh_TAG:
725  case pIQT_TAG:
727  case MV0F_TAG:
728  case AV0F_TAG:
729 get_video_packet:
730  if (!chunk_size)
731  continue;
732  if (chunk_size > INT_MAX - 3)
733  return AVERROR_INVALIDDATA;
734 
735  vp6a = (ea->video.codec == AV_CODEC_ID_VP6A && (chunk_type == MV0F_TAG || chunk_type == MV0K_TAG));
736 
737  if (partial_packet) {
738  ret = av_append_packet(pb, pkt, chunk_size);
739  } else {
740  if (vp6a)
741  avio_seek(pb, -3, SEEK_CUR);
742  ret = av_get_packet(pb, pkt, chunk_size + (vp6a ? 3 : 0));
743  if (ret >= 0 && vp6a)
744  AV_WB24(pkt->data, chunk_size);
745  }
746  packet_read = 1;
747 
748  if (ret < 0) {
749  partial_packet = 0;
750  break;
751  }
752  partial_packet = vp6a || chunk_type == MVIh_TAG;
753  if (ea->alpha.codec && (chunk_type == AV0K_TAG || chunk_type == AV0F_TAG))
755  else
757  pkt->flags |= key;
758  break;
759 
760  default:
761  avio_skip(pb, chunk_size);
762  break;
763  }
764  }
765 
766  if (ret >= 0 && hit_end && !packet_read)
767  return AVERROR(EAGAIN);
768 
769  return ret;
770 }
771 
772 #define OFFSET(x) offsetof(EaDemuxContext, x)
773 #define FLAGS AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_DECODING_PARAM
774 static const AVOption options[] = {
775  {"merge_alpha", "return VP6 alpha in the main video stream", OFFSET(merge_alpha), AV_OPT_TYPE_BOOL, {.i64 = 0}, 0, 1, FLAGS },
776  {NULL}
777 };
778 
779 static const AVClass ea_class = {
780  .class_name = "ea demuxer",
781  .item_name = av_default_item_name,
782  .option = options,
783  .version = LIBAVUTIL_VERSION_INT,
784 };
785 
787  .name = "ea",
788  .long_name = NULL_IF_CONFIG_SMALL("Electronic Arts Multimedia"),
789  .priv_data_size = sizeof(EaDemuxContext),
790  .read_probe = ea_probe,
793  .priv_class = &ea_class,
794 };
AV_CODEC_ID_PCM_S16LE
@ AV_CODEC_ID_PCM_S16LE
Definition: codec_id.h:326
SCEl_TAG
#define SCEl_TAG
Definition: electronicarts.c:49
av_packet_unref
void av_packet_unref(AVPacket *pkt)
Wipe the packet.
Definition: avpacket.c:422
AV_LOG_WARNING
#define AV_LOG_WARNING
Something somehow does not look correct.
Definition: log.h:186
ea_read_header
static int ea_read_header(AVFormatContext *s)
Definition: electronicarts.c:526
SCHl_TAG
#define SCHl_TAG
Definition: electronicarts.c:35
process_video_header_vp6
static int process_video_header_vp6(AVFormatContext *s, VideoProperties *video)
Definition: electronicarts.c:331
AVERROR
Filter the word “frame” indicates either a video frame or a group of audio as stored in an AVFrame structure Format for each input and each output the list of supported formats For video that means pixel format For audio that means channel sample they are references to shared objects When the negotiation mechanism computes the intersection of the formats supported at each end of a all references to both lists are replaced with a reference to the intersection And when a single format is eventually chosen for a link amongst the remaining all references to the list are updated That means that if a filter requires that its input and output have the same format amongst a supported all it has to do is use a reference to the same list of formats query_formats can leave some formats unset and return AVERROR(EAGAIN) to cause the negotiation mechanism toagain later. That can be used by filters with complex requirements to use the format negotiated on one link to set the formats supported on another. Frame references ownership and permissions
opt.h
avformat_new_stream
AVStream * avformat_new_stream(AVFormatContext *s, const AVCodec *c)
Add a new stream to a media file.
Definition: options.c:237
AVCodecParameters::codec_type
enum AVMediaType codec_type
General type of the encoded data.
Definition: codec_par.h:58
AV_CODEC_ID_TQI
@ AV_CODEC_ID_TQI
Definition: codec_id.h:174
ea_class
static const AVClass ea_class
Definition: electronicarts.c:779
SEEN_TAG
#define SEEN_TAG
Definition: electronicarts.c:41
init_video_stream
static int init_video_stream(AVFormatContext *s, VideoProperties *video)
Definition: electronicarts.c:498
AVERROR_EOF
#define AVERROR_EOF
End of file.
Definition: error.h:57
VideoProperties::stream_index
int stream_index
Definition: electronicarts.c:75
AVP6_TAG
#define AVP6_TAG
Definition: electronicarts.c:68
MPCh_TAG
#define MPCh_TAG
Definition: electronicarts.c:56
MVIh_TAG
#define MVIh_TAG
Definition: electronicarts.c:66
AVPacket::data
uint8_t * data
Definition: packet.h:374
SEND_TAG
#define SEND_TAG
Definition: electronicarts.c:38
AV_CODEC_ID_VP6
@ AV_CODEC_ID_VP6
Definition: codec_id.h:143
pQGT_TAG
#define pQGT_TAG
Definition: electronicarts.c:58
AVOption
AVOption.
Definition: opt.h:251
AVStream::avg_frame_rate
AVRational avg_frame_rate
Average framerate.
Definition: avformat.h:1028
AV_CODEC_ID_ADPCM_EA_R3
@ AV_CODEC_ID_ADPCM_EA_R3
Definition: codec_id.h:386
ISNe_TAG
#define ISNe_TAG
Definition: electronicarts.c:45
process_audio_header_sead
static void process_audio_header_sead(AVFormatContext *s)
Definition: electronicarts.c:310
AVPacket::duration
int64_t duration
Duration of this packet in AVStream->time_base units, 0 if unknown.
Definition: packet.h:392
AVCodecParameters::codec_tag
uint32_t codec_tag
Additional information about the codec (corresponds to the AVI FOURCC).
Definition: codec_par.h:66
EaDemuxContext::num_channels
int num_channels
Definition: electronicarts.c:90
AVChannelLayout::nb_channels
int nb_channels
Number of channels in this layout.
Definition: channel_layout.h:311
AV_PKT_FLAG_KEY
#define AV_PKT_FLAG_KEY
The packet contains a keyframe.
Definition: packet.h:429
AV_CODEC_ID_PCM_S16LE_PLANAR
@ AV_CODEC_ID_PCM_S16LE_PLANAR
Definition: codec_id.h:344
AV_CODEC_ID_TGQ
@ AV_CODEC_ID_TGQ
Definition: codec_id.h:173
AV_CODEC_ID_MAD
@ AV_CODEC_ID_MAD
Definition: codec_id.h:181
AVPROBE_SCORE_MAX
#define AVPROBE_SCORE_MAX
maximum score
Definition: avformat.h:465
EaDemuxContext::alpha
VideoProperties alpha
Definition: electronicarts.c:83
EaDemuxContext::bytes
int bytes
Definition: electronicarts.c:88
read_arbitrary
static uint32_t read_arbitrary(AVIOContext *pb)
Definition: electronicarts.c:97
avpriv_set_pts_info
void avpriv_set_pts_info(AVStream *st, int pts_wrap_bits, unsigned int pts_num, unsigned int pts_den)
Set the time base and wrapping info for a given stream.
Definition: avformat.c:763
kVGT_TAG
#define kVGT_TAG
Definition: electronicarts.c:50
ffstream
static av_always_inline FFStream * ffstream(AVStream *st)
Definition: internal.h:413
MADm_TAG
#define MADm_TAG
Definition: electronicarts.c:54
avio_tell
static av_always_inline int64_t avio_tell(AVIOContext *s)
ftell() equivalent for AVIOContext.
Definition: avio.h:510
AV_CODEC_ID_MP3
@ AV_CODEC_ID_MP3
preferred ID for decoding MPEG audio layer 1, 2 or 3
Definition: codec_id.h:436
AVStream::duration
int64_t duration
Decoding: duration of the stream, in stream time base.
Definition: avformat.h:998
ISNh_TAG
#define ISNh_TAG
Definition: electronicarts.c:42
MADe_TAG
#define MADe_TAG
Definition: electronicarts.c:55
avio_rl16
unsigned int avio_rl16(AVIOContext *s)
Definition: aviobuf.c:745
EaDemuxContext::audio_codec
enum AVCodecID audio_codec
Definition: electronicarts.c:85
av_bswap32
#define av_bswap32
Definition: bswap.h:33
AV_CODEC_ID_PCM_S8
@ AV_CODEC_ID_PCM_S8
Definition: codec_id.h:330
VideoProperties::height
int height
Definition: electronicarts.c:73
avio_rb32
unsigned int avio_rb32(AVIOContext *s)
Definition: aviobuf.c:792
AV_CODEC_ID_MDEC
@ AV_CODEC_ID_MDEC
Definition: codec_id.h:89
pkt
AVPacket * pkt
Definition: movenc.c:59
AV_LOG_ERROR
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:180
OFFSET
#define OFFSET(x)
Definition: electronicarts.c:772
AVInputFormat
Definition: avformat.h:656
MV0K_TAG
#define MV0K_TAG
Definition: electronicarts.c:61
intreadwrite.h
s
#define s(width, name)
Definition: cbs_vp9.c:256
AV_CODEC_ID_ADPCM_IMA_EA_SEAD
@ AV_CODEC_ID_ADPCM_IMA_EA_SEAD
Definition: codec_id.h:388
AVInputFormat::name
const char * name
A comma separated list of short names for the format.
Definition: avformat.h:661
AVProbeData::buf
unsigned char * buf
Buffer must have AVPROBE_PADDING_SIZE of extra allocated bytes filled with zero.
Definition: avformat.h:455
AVMEDIA_TYPE_AUDIO
@ AVMEDIA_TYPE_AUDIO
Definition: avutil.h:202
AVCodecParameters::width
int width
Video only.
Definition: codec_par.h:128
AV_LOG_DEBUG
#define AV_LOG_DEBUG
Stuff which is only useful for libav* developers.
Definition: log.h:201
EaDemuxContext::sample_rate
int sample_rate
Definition: electronicarts.c:89
AV_CODEC_ID_PCM_MULAW
@ AV_CODEC_ID_PCM_MULAW
Definition: codec_id.h:332
ISNd_TAG
#define ISNd_TAG
Definition: electronicarts.c:44
key
const char * key
Definition: hwcontext_opencl.c:174
process_audio_header_elements
static int process_audio_header_elements(AVFormatContext *s)
Definition: electronicarts.c:115
process_video_header_cmv
static void process_video_header_cmv(AVFormatContext *s, VideoProperties *video)
Definition: electronicarts.c:349
FFStream::need_parsing
enum AVStreamParseType need_parsing
Definition: internal.h:386
AVFormatContext
Format I/O context.
Definition: avformat.h:1216
SCDl_TAG
#define SCDl_TAG
Definition: electronicarts.c:48
internal.h
AVStream::codecpar
AVCodecParameters * codecpar
Codec parameters associated with this stream.
Definition: avformat.h:1108
LIBAVUTIL_VERSION_INT
#define LIBAVUTIL_VERSION_INT
Definition: version.h:85
read_header
static int read_header(FFV1Context *f)
Definition: ffv1dec.c:540
AVClass
Describe the class of an AVClass context structure.
Definition: log.h:66
AV0F_TAG
#define AV0F_TAG
Definition: electronicarts.c:65
NULL
#define NULL
Definition: coverity.c:32
read_probe
static int read_probe(const AVProbeData *pd)
Definition: jvdec.c:55
AVRational
Rational number (pair of numerator and denominator).
Definition: rational.h:58
AV_CODEC_ID_ADPCM_IMA_EA_EACS
@ AV_CODEC_ID_ADPCM_IMA_EA_EACS
Definition: codec_id.h:389
av_default_item_name
const char * av_default_item_name(void *ptr)
Return the context name.
Definition: log.c:237
AVProbeData
This structure contains the data a format has to probe a file.
Definition: avformat.h:453
TGQs_TAG
#define TGQs_TAG
Definition: electronicarts.c:57
EaDemuxContext
Definition: electronicarts.c:78
GSTR_TAG
#define GSTR_TAG
Definition: electronicarts.c:47
mTCD_TAG
#define mTCD_TAG
Definition: electronicarts.c:52
AVCodecParameters::ch_layout
AVChannelLayout ch_layout
Audio only.
Definition: codec_par.h:213
AV_CODEC_ID_VP6A
@ AV_CODEC_ID_VP6A
Definition: codec_id.h:158
EaDemuxContext::num_samples
int num_samples
Definition: electronicarts.c:91
AVCodecParameters::sample_rate
int sample_rate
Audio only.
Definition: codec_par.h:178
AVStream::nb_frames
int64_t nb_frames
number of frames in this stream if known or 0
Definition: avformat.h:1000
AVCodecID
AVCodecID
Identify the syntax and semantics of the bitstream.
Definition: codec_id.h:49
MADk_TAG
#define MADk_TAG
Definition: electronicarts.c:53
avio_rl32
unsigned int avio_rl32(AVIOContext *s)
Definition: aviobuf.c:761
AVIOContext
Bytestream IO Context.
Definition: avio.h:166
AVPacket::size
int size
Definition: packet.h:375
NULL_IF_CONFIG_SMALL
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification.
Definition: internal.h:115
byte
uint64_t_TMPL AV_WL64 unsigned int_TMPL AV_WL32 unsigned int_TMPL AV_WL24 unsigned int_TMPL AV_WL16 uint64_t_TMPL AV_WB64 unsigned int_TMPL AV_WB32 unsigned int_TMPL AV_WB24 unsigned int_TMPL AV_WB16 unsigned int_TMPL byte
Definition: bytestream.h:99
size
int size
Definition: twinvq_data.h:10344
AV_RB32
uint64_t_TMPL AV_WL64 unsigned int_TMPL AV_WL32 unsigned int_TMPL AV_WL24 unsigned int_TMPL AV_WL16 uint64_t_TMPL AV_WB64 unsigned int_TMPL AV_RB32
Definition: bytestream.h:96
AV_WB24
#define AV_WB24(p, d)
Definition: intreadwrite.h:450
MVIf_TAG
#define MVIf_TAG
Definition: electronicarts.c:67
avio_r8
int avio_r8(AVIOContext *s)
Definition: aviobuf.c:634
AVPacket::flags
int flags
A combination of AV_PKT_FLAG values.
Definition: packet.h:380
EaDemuxContext::video
VideoProperties video
Definition: electronicarts.c:83
ea_read_packet
static int ea_read_packet(AVFormatContext *s, AVPacket *pkt)
Definition: electronicarts.c:582
SEAD_TAG
#define SEAD_TAG
Definition: electronicarts.c:36
AV_CODEC_ID_TGV
@ AV_CODEC_ID_TGV
Definition: codec_id.h:172
EaDemuxContext::audio_stream_index
int audio_stream_index
Definition: electronicarts.c:86
pIQT_TAG
#define pIQT_TAG
Definition: electronicarts.c:59
AV_CODEC_ID_NONE
@ AV_CODEC_ID_NONE
Definition: codec_id.h:50
i
#define i(width, name, range_min, range_max)
Definition: cbs_h2645.c:269
ff_ea_demuxer
const AVInputFormat ff_ea_demuxer
Definition: electronicarts.c:786
AVCodecParameters::height
int height
Definition: codec_par.h:129
AVCodecParameters::block_align
int block_align
Audio only.
Definition: codec_par.h:185
AV_CODEC_ID_CMV
@ AV_CODEC_ID_CMV
Definition: codec_id.h:170
av_inv_q
static av_always_inline AVRational av_inv_q(AVRational q)
Invert a rational.
Definition: rational.h:159
EaDemuxContext::platform
int platform
Definition: electronicarts.c:93
av_get_packet
int av_get_packet(AVIOContext *s, AVPacket *pkt, int size)
Allocate and read the payload of a packet and initialize its fields with default values.
Definition: utils.c:102
AV_CODEC_ID_ADPCM_EA
@ AV_CODEC_ID_ADPCM_EA
Definition: codec_id.h:375
VideoProperties::nb_frames
int nb_frames
Definition: electronicarts.c:74
av_uninit
#define av_uninit(x)
Definition: attributes.h:154
options
static const AVOption options[]
Definition: electronicarts.c:774
tag
uint32_t tag
Definition: movenc.c:1647
ret
ret
Definition: filter_design.txt:187
read_packet
static int read_packet(void *opaque, uint8_t *buf, int buf_size)
Definition: avio_reading.c:42
AVStream
Stream structure.
Definition: avformat.h:948
ea_probe
static int ea_probe(const AVProbeData *p)
Definition: electronicarts.c:469
avio_seek
int64_t avio_seek(AVIOContext *s, int64_t offset, int whence)
fseek() equivalent for AVIOContext.
Definition: aviobuf.c:262
AVClass::class_name
const char * class_name
The name of the class; usually it is the same name as the context structure type to which the AVClass...
Definition: log.h:71
av_append_packet
int av_append_packet(AVIOContext *s, AVPacket *pkt, int size)
Read data and append it to the current content of the AVPacket.
Definition: utils.c:118
AVSTREAM_PARSE_HEADERS
@ AVSTREAM_PARSE_HEADERS
Only parse headers, do not repack.
Definition: avformat.h:799
FLAGS
#define FLAGS
Definition: electronicarts.c:773
avformat.h
fVGT_TAG
#define fVGT_TAG
Definition: electronicarts.c:51
VideoProperties::codec
enum AVCodecID codec
Definition: electronicarts.c:71
AV_RL32
uint64_t_TMPL AV_WL64 unsigned int_TMPL AV_RL32
Definition: bytestream.h:92
VideoProperties::time_base
AVRational time_base
Definition: electronicarts.c:72
PT00_TAG
#define PT00_TAG
Definition: electronicarts.c:46
EACS_TAG
#define EACS_TAG
Definition: electronicarts.c:43
AVStream::index
int index
stream index in AVFormatContext
Definition: avformat.h:956
EaDemuxContext::big_endian
int big_endian
Definition: electronicarts.c:81
SNDC_TAG
#define SNDC_TAG
Definition: electronicarts.c:37
MVhd_TAG
#define MVhd_TAG
Definition: electronicarts.c:60
video
A Quick Description Of Rate Distortion Theory We want to encode a video
Definition: rate_distortion.txt:3
process_video_header_mdec
static void process_video_header_mdec(AVFormatContext *s, VideoProperties *video)
Definition: electronicarts.c:321
AV_CODEC_ID_ADPCM_EA_R1
@ AV_CODEC_ID_ADPCM_EA_R1
Definition: codec_id.h:385
SDEN_TAG
#define SDEN_TAG
Definition: electronicarts.c:40
AV_CODEC_ID_ADPCM_EA_R2
@ AV_CODEC_ID_ADPCM_EA_R2
Definition: codec_id.h:387
AVStream::r_frame_rate
AVRational r_frame_rate
Real base framerate of the stream.
Definition: avformat.h:1097
AVPacket::stream_index
int stream_index
Definition: packet.h:376
AVhd_TAG
#define AVhd_TAG
Definition: electronicarts.c:63
avio_skip
int64_t avio_skip(AVIOContext *s, int64_t offset)
Skip given number of bytes forward.
Definition: aviobuf.c:349
AVMEDIA_TYPE_VIDEO
@ AVMEDIA_TYPE_VIDEO
Definition: avutil.h:201
process_ea_header
static int process_ea_header(AVFormatContext *s)
Definition: electronicarts.c:362
AVCodecParameters::bits_per_coded_sample
int bits_per_coded_sample
The number of bits per sample in the codedwords.
Definition: codec_par.h:104
EaDemuxContext::merge_alpha
int merge_alpha
Definition: electronicarts.c:94
avpriv_request_sample
#define avpriv_request_sample(...)
Definition: tableprint_vlc.h:36
AVCodecParameters::codec_id
enum AVCodecID codec_id
Specific type of the encoded data (the codec used).
Definition: codec_par.h:62
AV0K_TAG
#define AV0K_TAG
Definition: electronicarts.c:64
AVPacket
This structure stores compressed data.
Definition: packet.h:351
AV_OPT_TYPE_BOOL
@ AV_OPT_TYPE_BOOL
Definition: opt.h:244
VideoProperties::width
int width
Definition: electronicarts.c:73
AVCodecParameters::bit_rate
int64_t bit_rate
The average bitrate of the encoded data (in bits per second).
Definition: codec_par.h:91
av_log
#define av_log(a,...)
Definition: tableprint_vlc.h:27
AVERROR_INVALIDDATA
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
Definition: error.h:61
process_audio_header_eacs
static void process_audio_header_eacs(AVFormatContext *s)
Definition: electronicarts.c:273
SHEN_TAG
#define SHEN_TAG
Definition: electronicarts.c:39
AVStream::start_time
int64_t start_time
Decoding: pts of the first frame of the stream in presentation order, in stream time base.
Definition: avformat.h:988
MV0F_TAG
#define MV0F_TAG
Definition: electronicarts.c:62
AV_CODEC_ID_ADPCM_PSX
@ AV_CODEC_ID_ADPCM_PSX
Definition: codec_id.h:402
AV_CODEC_ID_MPEG2VIDEO
@ AV_CODEC_ID_MPEG2VIDEO
preferred ID for MPEG-1/2 video decoding
Definition: codec_id.h:54
VideoProperties
Definition: electronicarts.c:70
avio_feof
int avio_feof(AVIOContext *s)
Similar to feof() but also returns nonzero on read errors.
Definition: aviobuf.c:377