libavformat/raw.c

   1 /*
   2  * RAW muxer and demuxer
   3  * Copyright (c) 2001 Fabrice Bellard.
   4  * Copyright (c) 2005 Alex Beregszaszi
   5  *
   6  * This file is part of FFmpeg.
   7  *
   8  * FFmpeg is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU Lesser General Public
  10  * License as published by the Free Software Foundation; either
  11  * version 2.1 of the License, or (at your option) any later version.
  12  *
  13  * FFmpeg is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16  * Lesser General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU Lesser General Public
  19  * License along with FFmpeg; if not, write to the Free Software
  20  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  21  */
  22 #include "avformat.h"
  23 #include "ac3_parser.h"
  24 #include "raw.h"
  25 #include "crc.h"
  26 #include "bitstream.h"
  27
  28 #ifdef CONFIG_MUXERS
  29 /* simple formats */
  30 static int flac_write_header(struct AVFormatContext *s)
  31 {
  32     static const uint8_t header[8] = {
  33         0x66, 0x4C, 0x61, 0x43, 0x80, 0x00, 0x00, 0x22
  34     };
  35     uint8_t *streaminfo = s->streams[0]->codec->extradata;
  36     int len = s->streams[0]->codec->extradata_size;
  37     if(streaminfo != NULL && len > 0) {
  38         put_buffer(s->pb, header, 8);
  39         put_buffer(s->pb, streaminfo, len);
  40     }
  41     return 0;
  42 }
  43
  44
  45 static int roq_write_header(struct AVFormatContext *s)
  46 {
  47     static const uint8_t header[] = {
  48         0x84, 0x10, 0xFF, 0xFF, 0xFF, 0xFF, 0x1E, 0x00
  49     };
  50
  51     put_buffer(s->pb, header, 8);
  52     put_flush_packet(s->pb);
  53
  54     return 0;
  55 }
  56
  57 static int raw_write_packet(struct AVFormatContext *s, AVPacket *pkt)
  58 {
  59     put_buffer(s->pb, pkt->data, pkt->size);
  60     put_flush_packet(s->pb);
  61     return 0;
  62 }
  63 #endif //CONFIG_MUXERS
  64
  65 /* raw input */
  66 static int raw_read_header(AVFormatContext *s, AVFormatParameters *ap)
  67 {
  68     AVStream *st;
  69     int id;
  70
  71     st = av_new_stream(s, 0);
  72     if (!st)
  73         return AVERROR(ENOMEM);
  74
  75         id = s->iformat->value;
  76         if (id == CODEC_ID_RAWVIDEO) {
  77             st->codec->codec_type = CODEC_TYPE_VIDEO;
  78         } else {
  79             st->codec->codec_type = CODEC_TYPE_AUDIO;
  80         }
  81         st->codec->codec_id = id;
  82
  83         switch(st->codec->codec_type) {
  84         case CODEC_TYPE_AUDIO:
  85             st->codec->sample_rate = ap->sample_rate;
  86             st->codec->channels = ap->channels;
  87             av_set_pts_info(st, 64, 1, st->codec->sample_rate);
  88             break;
  89         case CODEC_TYPE_VIDEO:
  90             if(ap->time_base.num)
  91                 av_set_pts_info(st, 64, ap->time_base.num, ap->time_base.den);
  92             else
  93                 av_set_pts_info(st, 64, 1, 25);
  94             st->codec->width = ap->width;
  95             st->codec->height = ap->height;
  96             st->codec->pix_fmt = ap->pix_fmt;
  97             if(st->codec->pix_fmt == PIX_FMT_NONE)
  98                 st->codec->pix_fmt= PIX_FMT_YUV420P;
  99             break;
 100         default:
 101             return -1;
 102         }
 103     return 0;
 104 }
 105
 106 #define RAW_PACKET_SIZE 1024
 107
 108 static int raw_read_packet(AVFormatContext *s, AVPacket *pkt)
 109 {
 110     int ret, size, bps;
 111     //    AVStream *st = s->streams[0];
 112
 113     size= RAW_PACKET_SIZE;
 114
 115     ret= av_get_packet(s->pb, pkt, size);
 116
 117     pkt->stream_index = 0;
 118     if (ret <= 0) {
 119         return AVERROR(EIO);
 120     }
 121     /* note: we need to modify the packet size here to handle the last
 122        packet */
 123     pkt->size = ret;
 124
 125     bps= av_get_bits_per_sample(s->streams[0]->codec->codec_id);
 126     assert(bps); // if false there IS a bug elsewhere (NOT in this function)
 127     pkt->dts=
 128     pkt->pts= pkt->pos*8 / (bps * s->streams[0]->codec->channels);
 129
 130     return ret;
 131 }
 132
 133 static int raw_read_partial_packet(AVFormatContext *s, AVPacket *pkt)
 134 {
 135     int ret, size;
 136
 137     size = RAW_PACKET_SIZE;
 138
 139     if (av_new_packet(pkt, size) < 0)
 140         return AVERROR(EIO);
 141
 142     pkt->pos= url_ftell(s->pb);
 143     pkt->stream_index = 0;
 144     ret = get_partial_buffer(s->pb, pkt->data, size);
 145     if (ret <= 0) {
 146         av_free_packet(pkt);
 147         return AVERROR(EIO);
 148     }
 149     pkt->size = ret;
 150     return ret;
 151 }
 152
 153 // http://www.artificis.hu/files/texts/ingenient.txt
 154 static int ingenient_read_packet(AVFormatContext *s, AVPacket *pkt)
 155 {
 156     int ret, size, w, h, unk1, unk2;
 157
 158     if (get_le32(s->pb) != MKTAG('M', 'J', 'P', 'G'))
 159         return AVERROR(EIO); // FIXME
 160
 161     size = get_le32(s->pb);
 162
 163     w = get_le16(s->pb);
 164     h = get_le16(s->pb);
 165
 166     url_fskip(s->pb, 8); // zero + size (padded?)
 167     url_fskip(s->pb, 2);
 168     unk1 = get_le16(s->pb);
 169     unk2 = get_le16(s->pb);
 170     url_fskip(s->pb, 22); // ascii timestamp
 171
 172     av_log(NULL, AV_LOG_DEBUG, "Ingenient packet: size=%d, width=%d, height=%d, unk1=%d unk2=%d\n",
 173         size, w, h, unk1, unk2);
 174
 175     if (av_new_packet(pkt, size) < 0)
 176         return AVERROR(EIO);
 177
 178     pkt->pos = url_ftell(s->pb);
 179     pkt->stream_index = 0;
 180     ret = get_buffer(s->pb, pkt->data, size);
 181     if (ret <= 0) {
 182         av_free_packet(pkt);
 183         return AVERROR(EIO);
 184     }
 185     pkt->size = ret;
 186     return ret;
 187 }
 188
 189 static int raw_read_close(AVFormatContext *s)
 190 {
 191     return 0;
 192 }
 193
 194 int pcm_read_seek(AVFormatContext *s,
 195                   int stream_index, int64_t timestamp, int flags)
 196 {
 197     AVStream *st;
 198     int block_align, byte_rate;
 199     int64_t pos;
 200
 201     st = s->streams[0];
 202
 203     block_align = st->codec->block_align ? st->codec->block_align :
 204         (av_get_bits_per_sample(st->codec->codec_id) * st->codec->channels) >> 3;
 205     byte_rate = st->codec->bit_rate ? st->codec->bit_rate >> 3 :
 206         block_align * st->codec->sample_rate;
 207
 208     if (block_align <= 0 || byte_rate <= 0)
 209         return -1;
 210
 211     /* compute the position by aligning it to block_align */
 212     pos = av_rescale_rnd(timestamp * byte_rate,
 213                          st->time_base.num,
 214                          st->time_base.den * (int64_t)block_align,
 215                          (flags & AVSEEK_FLAG_BACKWARD) ? AV_ROUND_DOWN : AV_ROUND_UP);
 216     pos *= block_align;
 217
 218     /* recompute exact position */
 219     st->cur_dts = av_rescale(pos, st->time_base.den, byte_rate * (int64_t)st->time_base.num);
 220     url_fseek(s->pb, pos + s->data_offset, SEEK_SET);
 221     return 0;
 222 }
 223
 224 static int audio_read_header(AVFormatContext *s,
 225                              AVFormatParameters *ap)
 226 {
 227     AVStream *st = av_new_stream(s, 0);
 228     if (!st)
 229         return AVERROR(ENOMEM);
 230     st->codec->codec_type = CODEC_TYPE_AUDIO;
 231     st->codec->codec_id = s->iformat->value;
 232     st->need_parsing = AVSTREAM_PARSE_FULL;
 233     /* the parameters will be extracted from the compressed bitstream */
 234     return 0;
 235 }
 236
 237 /* mpeg1/h263 input */
 238 static int video_read_header(AVFormatContext *s,
 239                              AVFormatParameters *ap)
 240 {
 241     AVStream *st;
 242
 243     st = av_new_stream(s, 0);
 244     if (!st)
 245         return AVERROR(ENOMEM);
 246
 247     st->codec->codec_type = CODEC_TYPE_VIDEO;
 248     st->codec->codec_id = s->iformat->value;
 249     st->need_parsing = AVSTREAM_PARSE_FULL;
 250
 251     /* for mjpeg, specify frame rate */
 252     /* for mpeg4 specify it too (most mpeg4 streams do not have the fixed_vop_rate set ...)*/
 253     if (ap->time_base.num) {
 254         av_set_pts_info(st, 64, ap->time_base.num, ap->time_base.den);
 255     } else if ( st->codec->codec_id == CODEC_ID_MJPEG ||
 256                 st->codec->codec_id == CODEC_ID_MPEG4 ||
 257                 st->codec->codec_id == CODEC_ID_DIRAC ||
 258                 st->codec->codec_id == CODEC_ID_H264) {
 259         av_set_pts_info(st, 64, 1, 25);
 260     }
 261
 262     return 0;
 263 }
 264
 265 #define SEQ_START_CODE          0x000001b3
 266 #define GOP_START_CODE          0x000001b8
 267 #define PICTURE_START_CODE      0x00000100
 268 #define SLICE_START_CODE        0x00000101
 269 #define PACK_START_CODE         0x000001ba
 270 #define VIDEO_ID                0x000001e0
 271 #define AUDIO_ID                0x000001c0
 272
 273 static int mpegvideo_probe(AVProbeData *p)
 274 {
 275     uint32_t code= -1;
 276     int pic=0, seq=0, slice=0, pspack=0, pes=0;
 277     int i;
 278
 279     for(i=0; i<p->buf_size; i++){
 280         code = (code<<8) + p->buf[i];
 281         if ((code & 0xffffff00) == 0x100) {
 282             switch(code){
 283             case     SEQ_START_CODE:   seq++; break;
 284             case PICTURE_START_CODE:   pic++; break;
 285             case   SLICE_START_CODE: slice++; break;
 286             case    PACK_START_CODE: pspack++; break;
 287             }
 288             if     ((code & 0x1f0) == VIDEO_ID)   pes++;
 289             else if((code & 0x1e0) == AUDIO_ID)   pes++;
 290         }
 291     }
 292     if(seq && seq*9<=pic*10 && pic*9<=slice*10 && !pspack && !pes)
 293         return AVPROBE_SCORE_MAX/2+1; // +1 for .mpg
 294     return 0;
 295 }
 296
 297 #define VISUAL_OBJECT_START_CODE       0x000001b5
 298 #define VOP_START_CODE                 0x000001b6
 299
 300 static int mpeg4video_probe(AVProbeData *probe_packet)
 301 {
 302     uint32_t temp_buffer= -1;
 303     int VO=0, VOL=0, VOP = 0, VISO = 0, res=0;
 304     int i;
 305
 306     for(i=0; i<probe_packet->buf_size; i++){
 307         temp_buffer = (temp_buffer<<8) + probe_packet->buf[i];
 308         if ((temp_buffer & 0xffffff00) != 0x100)
 309             continue;
 310
 311         if (temp_buffer == VOP_START_CODE)                         VOP++;
 312         else if (temp_buffer == VISUAL_OBJECT_START_CODE)          VISO++;
 313         else if (temp_buffer < 0x120)                              VO++;
 314         else if (temp_buffer < 0x130)                              VOL++;
 315         else if (   !(0x1AF < temp_buffer && temp_buffer < 0x1B7)
 316                  && !(0x1B9 < temp_buffer && temp_buffer < 0x1C4)) res++;
 317     }
 318
 319     if ( VOP >= VISO && VOP >= VOL && VO >= VOL && VOL > 0 && res==0)
 320         return AVPROBE_SCORE_MAX/2;
 321     return 0;
 322 }
 323
 324 static int h263_probe(AVProbeData *p)
 325 {
 326     int code;
 327     const uint8_t *d;
 328
 329     d = p->buf;
 330     code = (d[0] << 14) | (d[1] << 6) | (d[2] >> 2);
 331     if (code == 0x20) {
 332         return 50;
 333     }
 334     return 0;
 335 }
 336
 337 static int h261_probe(AVProbeData *p)
 338 {
 339     int code;
 340     const uint8_t *d;
 341
 342     d = p->buf;
 343     code = (d[0] << 12) | (d[1] << 4) | (d[2] >> 4);
 344     if (code == 0x10) {
 345         return 50;
 346     }
 347     return 0;
 348 }
 349
 350 static int dirac_probe(AVProbeData *p)
 351 {
 352     if (AV_RL32(p->buf) == MKTAG('B', 'B', 'C', 'D'))
 353         return AVPROBE_SCORE_MAX;
 354     else
 355         return 0;
 356 }
 357
 358 static int ac3_probe(AVProbeData *p)
 359 {
 360     int max_frames, first_frames = 0, frames;
 361     uint8_t *buf, *buf2, *end;
 362     AC3HeaderInfo hdr;
 363     GetBitContext gbc;
 364
 365     max_frames = 0;
 366     buf = p->buf;
 367     end = buf + p->buf_size;
 368
 369     for(; buf < end; buf++) {
 370         buf2 = buf;
 371
 372         for(frames = 0; buf2 < end; frames++) {
 373             init_get_bits(&gbc, buf2, 54);
 374             if(ff_ac3_parse_header(&gbc, &hdr) < 0)
 375                 break;
 376             if(buf2 + hdr.frame_size > end ||
 377                av_crc(av_crc_get_table(AV_CRC_16_ANSI), 0, buf2 + 2, hdr.frame_size - 2))
 378                 break;
 379             buf2 += hdr.frame_size;
 380         }
 381         max_frames = FFMAX(max_frames, frames);
 382         if(buf == p->buf)
 383             first_frames = frames;
 384     }
 385     if   (first_frames>=3) return AVPROBE_SCORE_MAX * 3 / 4;
 386     else if(max_frames>=3) return AVPROBE_SCORE_MAX / 2;
 387     else if(max_frames>=1) return 1;
 388     else                   return 0;
 389 }
 390
 391 static int flac_probe(AVProbeData *p)
 392 {
 393     if(memcmp(p->buf, "fLaC", 4)) return 0;
 394     else                          return AVPROBE_SCORE_MAX / 2;
 395 }
 396
 397 AVInputFormat shorten_demuxer = {
 398     "shn",
 399     "raw shorten",
 400     0,
 401     NULL,
 402     audio_read_header,
 403     raw_read_partial_packet,
 404     raw_read_close,
 405     .flags= AVFMT_GENERIC_INDEX,
 406     .extensions = "shn",
 407     .value = CODEC_ID_SHORTEN,
 408 };
 409
 410 AVInputFormat flac_demuxer = {
 411     "flac",
 412     "raw flac",
 413     0,
 414     flac_probe,
 415     audio_read_header,
 416     raw_read_partial_packet,
 417     raw_read_close,
 418     .flags= AVFMT_GENERIC_INDEX,
 419     .extensions = "flac",
 420     .value = CODEC_ID_FLAC,
 421 };
 422
 423 #ifdef CONFIG_MUXERS
 424 AVOutputFormat flac_muxer = {
 425     "flac",
 426     "raw flac",
 427     "audio/x-flac",
 428     "flac",
 429     0,
 430     CODEC_ID_FLAC,
 431     0,
 432     flac_write_header,
 433     raw_write_packet,
 434     .flags= AVFMT_NOTIMESTAMPS,
 435 };
 436 #endif //CONFIG_MUXERS
 437
 438 #ifdef CONFIG_AC3_DEMUXER
 439 AVInputFormat ac3_demuxer = {
 440     "ac3",
 441     "raw ac3",
 442     0,
 443     ac3_probe,
 444     audio_read_header,
 445     raw_read_partial_packet,
 446     raw_read_close,
 447     .flags= AVFMT_GENERIC_INDEX,
 448     .extensions = "ac3",
 449     .value = CODEC_ID_AC3,
 450 };
 451 #endif
 452
 453 #ifdef CONFIG_MUXERS
 454 AVOutputFormat ac3_muxer = {
 455     "ac3",
 456     "raw ac3",
 457     "audio/x-ac3",
 458     "ac3",
 459     0,
 460     CODEC_ID_AC3,
 461     0,
 462     NULL,
 463     raw_write_packet,
 464     .flags= AVFMT_NOTIMESTAMPS,
 465 };
 466
 467 AVOutputFormat dts_muxer = {
 468     "dts",
 469     "raw dts",
 470     "audio/x-dca",
 471     "dts",
 472     0,
 473     CODEC_ID_DTS,
 474     0,
 475     NULL,
 476     raw_write_packet,
 477     .flags= AVFMT_NOTIMESTAMPS,
 478 };
 479
 480 #endif //CONFIG_MUXERS
 481
 482 AVInputFormat dirac_demuxer = {
 483     "dirac",
 484     "raw dirac",
 485     0,
 486     dirac_probe,
 487     video_read_header,
 488     raw_read_partial_packet,
 489     raw_read_close,
 490     .flags= AVFMT_GENERIC_INDEX,
 491     .value = CODEC_ID_DIRAC,
 492 };
 493
 494 #ifdef CONFIG_MUXERS
 495 AVOutputFormat dirac_muxer = {
 496     "dirac",
 497     "raw dirac",
 498     NULL,
 499     "drc",
 500     0,
 501     0,
 502     CODEC_ID_DIRAC,
 503     NULL,
 504     raw_write_packet,
 505     .flags= AVFMT_NOTIMESTAMPS,
 506 };
 507 #endif
 508
 509 AVInputFormat dts_demuxer = {
 510     "dts",
 511     "raw dts",
 512     0,
 513     NULL,
 514     audio_read_header,
 515     raw_read_partial_packet,
 516     raw_read_close,
 517     .flags= AVFMT_GENERIC_INDEX,
 518     .extensions = "dts",
 519     .value = CODEC_ID_DTS,
 520 };
 521
 522 AVInputFormat aac_demuxer = {
 523     "aac",
 524     "ADTS AAC",
 525     0,
 526     NULL,
 527     audio_read_header,
 528     raw_read_partial_packet,
 529     raw_read_close,
 530     .flags= AVFMT_GENERIC_INDEX,
 531     .extensions = "aac",
 532     .value = CODEC_ID_AAC,
 533 };
 534
 535 AVInputFormat gsm_demuxer = {
 536     "gsm",
 537     "GSM",
 538     0,
 539     NULL,
 540     audio_read_header,
 541     raw_read_partial_packet,
 542     raw_read_close,
 543     .flags= AVFMT_GENERIC_INDEX,
 544     .extensions = "gsm",
 545     .value = CODEC_ID_GSM,
 546 };
 547
 548 #ifdef CONFIG_ROQ_MUXER
 549 AVOutputFormat roq_muxer =
 550 {
 551     "RoQ",
 552     "Id RoQ format",
 553     NULL,
 554     "roq",
 555     0,
 556     CODEC_ID_ROQ_DPCM,
 557     CODEC_ID_ROQ,
 558     roq_write_header,
 559     raw_write_packet,
 560 };
 561 #endif //CONFIG_ROQ_MUXER
 562
 563 AVInputFormat h261_demuxer = {
 564     "h261",
 565     "raw h261",
 566     0,
 567     h261_probe,
 568     video_read_header,
 569     raw_read_partial_packet,
 570     raw_read_close,
 571     .flags= AVFMT_GENERIC_INDEX,
 572     .extensions = "h261",
 573     .value = CODEC_ID_H261,
 574 };
 575
 576 #ifdef CONFIG_MUXERS
 577 AVOutputFormat h261_muxer = {
 578     "h261",
 579     "raw h261",
 580     "video/x-h261",
 581     "h261",
 582     0,
 583     0,
 584     CODEC_ID_H261,
 585     NULL,
 586     raw_write_packet,
 587     .flags= AVFMT_NOTIMESTAMPS,
 588 };
 589 #endif //CONFIG_MUXERS
 590
 591 AVInputFormat h263_demuxer = {
 592     "h263",
 593     "raw h263",
 594     0,
 595     h263_probe,
 596     video_read_header,
 597     raw_read_partial_packet,
 598     raw_read_close,
 599     .flags= AVFMT_GENERIC_INDEX,
 600 //    .extensions = "h263", //FIXME remove after writing mpeg4_probe
 601     .value = CODEC_ID_H263,
 602 };
 603
 604 #ifdef CONFIG_MUXERS
 605 AVOutputFormat h263_muxer = {
 606     "h263",
 607     "raw h263",
 608     "video/x-h263",
 609     "h263",
 610     0,
 611     0,
 612     CODEC_ID_H263,
 613     NULL,
 614     raw_write_packet,
 615     .flags= AVFMT_NOTIMESTAMPS,
 616 };
 617 #endif //CONFIG_MUXERS
 618
 619 AVInputFormat m4v_demuxer = {
 620     "m4v",
 621     "raw MPEG4 video format",
 622     0,
 623     mpeg4video_probe, /** probing for mpeg4 data */
 624     video_read_header,
 625     raw_read_partial_packet,
 626     raw_read_close,
 627     .flags= AVFMT_GENERIC_INDEX,
 628     .extensions = "m4v", //FIXME remove after writing mpeg4_probe
 629     .value = CODEC_ID_MPEG4,
 630 };
 631
 632 #ifdef CONFIG_MUXERS
 633 AVOutputFormat m4v_muxer = {
 634     "m4v",
 635     "raw MPEG4 video format",
 636     NULL,
 637     "m4v",
 638     0,
 639     CODEC_ID_NONE,
 640     CODEC_ID_MPEG4,
 641     NULL,
 642     raw_write_packet,
 643     .flags= AVFMT_NOTIMESTAMPS,
 644 };
 645 #endif //CONFIG_MUXERS
 646
 647 AVInputFormat h264_demuxer = {
 648     "h264",
 649     "raw H264 video format",
 650     0,
 651     NULL /*mpegvideo_probe*/,
 652     video_read_header,
 653     raw_read_partial_packet,
 654     raw_read_close,
 655     .flags= AVFMT_GENERIC_INDEX,
 656     .extensions = "h26l,h264,264", //FIXME remove after writing mpeg4_probe
 657     .value = CODEC_ID_H264,
 658 };
 659
 660 #ifdef CONFIG_MUXERS
 661 AVOutputFormat h264_muxer = {
 662     "h264",
 663     "raw H264 video format",
 664     NULL,
 665     "h264",
 666     0,
 667     CODEC_ID_NONE,
 668     CODEC_ID_H264,
 669     NULL,
 670     raw_write_packet,
 671     .flags= AVFMT_NOTIMESTAMPS,
 672 };
 673 #endif //CONFIG_MUXERS
 674
 675 AVInputFormat mpegvideo_demuxer = {
 676     "mpegvideo",
 677     "MPEG video",
 678     0,
 679     mpegvideo_probe,
 680     video_read_header,
 681     raw_read_partial_packet,
 682     raw_read_close,
 683     .flags= AVFMT_GENERIC_INDEX,
 684     .value = CODEC_ID_MPEG1VIDEO,
 685 };
 686
 687 #ifdef CONFIG_MUXERS
 688 AVOutputFormat mpeg1video_muxer = {
 689     "mpeg1video",
 690     "MPEG video",
 691     "video/x-mpeg",
 692     "mpg,mpeg,m1v",
 693     0,
 694     0,
 695     CODEC_ID_MPEG1VIDEO,
 696     NULL,
 697     raw_write_packet,
 698     .flags= AVFMT_NOTIMESTAMPS,
 699 };
 700 #endif //CONFIG_MUXERS
 701
 702 #ifdef CONFIG_MUXERS
 703 AVOutputFormat mpeg2video_muxer = {
 704     "mpeg2video",
 705     "MPEG2 video",
 706     NULL,
 707     "m2v",
 708     0,
 709     0,
 710     CODEC_ID_MPEG2VIDEO,
 711     NULL,
 712     raw_write_packet,
 713     .flags= AVFMT_NOTIMESTAMPS,
 714 };
 715 #endif //CONFIG_MUXERS
 716
 717 AVInputFormat mjpeg_demuxer = {
 718     "mjpeg",
 719     "MJPEG video",
 720     0,
 721     NULL,
 722     video_read_header,
 723     raw_read_partial_packet,
 724     raw_read_close,
 725     .flags= AVFMT_GENERIC_INDEX,
 726     .extensions = "mjpg,mjpeg",
 727     .value = CODEC_ID_MJPEG,
 728 };
 729
 730 AVInputFormat ingenient_demuxer = {
 731     "ingenient",
 732     "Ingenient MJPEG",
 733     0,
 734     NULL,
 735     video_read_header,
 736     ingenient_read_packet,
 737     raw_read_close,
 738     .flags= AVFMT_GENERIC_INDEX,
 739     .extensions = "cgi", // FIXME
 740     .value = CODEC_ID_MJPEG,
 741 };
 742
 743 #ifdef CONFIG_MUXERS
 744 AVOutputFormat mjpeg_muxer = {
 745     "mjpeg",
 746     "MJPEG video",
 747     "video/x-mjpeg",
 748     "mjpg,mjpeg",
 749     0,
 750     0,
 751     CODEC_ID_MJPEG,
 752     NULL,
 753     raw_write_packet,
 754     .flags= AVFMT_NOTIMESTAMPS,
 755 };
 756 #endif //CONFIG_MUXERS
 757
 758 AVInputFormat vc1_demuxer = {
 759     "vc1",
 760     "raw vc1",
 761     0,
 762     NULL /* vc1_probe */,
 763     video_read_header,
 764     raw_read_partial_packet,
 765     raw_read_close,
 766     .extensions = "vc1",
 767     .value = CODEC_ID_VC1,
 768 };
 769
 770 /* pcm formats */
 771
 772 #define PCMINPUTDEF(name, long_name, ext, codec) \
 773 AVInputFormat pcm_ ## name ## _demuxer = {\
 774     #name,\
 775     long_name,\
 776     0,\
 777     NULL,\
 778     raw_read_header,\
 779     raw_read_packet,\
 780     raw_read_close,\
 781     pcm_read_seek,\
 782     .flags= AVFMT_GENERIC_INDEX,\
 783     .extensions = ext,\
 784     .value = codec,\
 785 };
 786
 787 #define PCMOUTPUTDEF(name, long_name, ext, codec) \
 788 AVOutputFormat pcm_ ## name ## _muxer = {\
 789     #name,\
 790     long_name,\
 791     NULL,\
 792     ext,\
 793     0,\
 794     codec,\
 795     0,\
 796     NULL,\
 797     raw_write_packet,\
 798     .flags= AVFMT_NOTIMESTAMPS,\
 799 };
 800
 801
 802 #if !defined(CONFIG_MUXERS) && defined(CONFIG_DEMUXERS)
 803 #define PCMDEF(name, long_name, ext, codec) \
 804         PCMINPUTDEF(name, long_name, ext, codec)
 805 #elif defined(CONFIG_MUXERS) && !defined(CONFIG_DEMUXERS)
 806 #define PCMDEF(name, long_name, ext, codec) \
 807         PCMOUTPUTDEF(name, long_name, ext, codec)
 808 #elif defined(CONFIG_MUXERS) && defined(CONFIG_DEMUXERS)
 809 #define PCMDEF(name, long_name, ext, codec) \
 810         PCMINPUTDEF(name, long_name, ext, codec)\
 811         PCMOUTPUTDEF(name, long_name, ext, codec)
 812 #else
 813 #define PCMDEF(name, long_name, ext, codec)
 814 #endif
 815
 816 #ifdef WORDS_BIGENDIAN
 817 #define BE_DEF(s) s
 818 #define LE_DEF(s) NULL
 819 #else
 820 #define BE_DEF(s) NULL
 821 #define LE_DEF(s) s
 822 #endif
 823
 824
 825 PCMDEF(s16le, "pcm signed 16 bit little endian format",
 826        LE_DEF("sw"), CODEC_ID_PCM_S16LE)
 827
 828 PCMDEF(s16be, "pcm signed 16 bit big endian format",
 829        BE_DEF("sw"), CODEC_ID_PCM_S16BE)
 830
 831 PCMDEF(u16le, "pcm unsigned 16 bit little endian format",
 832        LE_DEF("uw"), CODEC_ID_PCM_U16LE)
 833
 834 PCMDEF(u16be, "pcm unsigned 16 bit big endian format",
 835        BE_DEF("uw"), CODEC_ID_PCM_U16BE)
 836
 837 PCMDEF(s8, "pcm signed 8 bit format",
 838        "sb", CODEC_ID_PCM_S8)
 839
 840 PCMDEF(u8, "pcm unsigned 8 bit format",
 841        "ub", CODEC_ID_PCM_U8)
 842
 843 PCMDEF(mulaw, "pcm mu law format",
 844        "ul", CODEC_ID_PCM_MULAW)
 845
 846 PCMDEF(alaw, "pcm A law format",
 847        "al", CODEC_ID_PCM_ALAW)
 848
 849 static int rawvideo_read_packet(AVFormatContext *s, AVPacket *pkt)
 850 {
 851     int packet_size, ret, width, height;
 852     AVStream *st = s->streams[0];
 853
 854     width = st->codec->width;
 855     height = st->codec->height;
 856
 857     packet_size = avpicture_get_size(st->codec->pix_fmt, width, height);
 858     if (packet_size < 0)
 859         return -1;
 860
 861     ret= av_get_packet(s->pb, pkt, packet_size);
 862     pkt->pts=
 863     pkt->dts= pkt->pos / packet_size;
 864
 865     pkt->stream_index = 0;
 866     if (ret != packet_size) {
 867         return AVERROR(EIO);
 868     } else {
 869         return 0;
 870     }
 871 }
 872
 873 AVInputFormat rawvideo_demuxer = {
 874     "rawvideo",
 875     "raw video format",
 876     0,
 877     NULL,
 878     raw_read_header,
 879     rawvideo_read_packet,
 880     raw_read_close,
 881     .flags= AVFMT_GENERIC_INDEX,
 882     .extensions = "yuv,cif,qcif,rgb",
 883     .value = CODEC_ID_RAWVIDEO,
 884 };
 885
 886 #ifdef CONFIG_MUXERS
 887 AVOutputFormat rawvideo_muxer = {
 888     "rawvideo",
 889     "raw video format",
 890     NULL,
 891     "yuv,rgb",
 892     0,
 893     CODEC_ID_NONE,
 894     CODEC_ID_RAWVIDEO,
 895     NULL,
 896     raw_write_packet,
 897     .flags= AVFMT_NOTIMESTAMPS,
 898 };
 899 #endif //CONFIG_MUXERS
 900
 901 #ifdef CONFIG_MUXERS
 902 static int null_write_packet(struct AVFormatContext *s, AVPacket *pkt)
 903 {
 904     return 0;
 905 }
 906
 907 AVOutputFormat null_muxer = {
 908     "null",
 909     "null video format",
 910     NULL,
 911     NULL,
 912     0,
 913 #ifdef WORDS_BIGENDIAN
 914     CODEC_ID_PCM_S16BE,
 915 #else
 916     CODEC_ID_PCM_S16LE,
 917 #endif
 918     CODEC_ID_RAWVIDEO,
 919     NULL,
 920     null_write_packet,
 921     .flags = AVFMT_NOFILE | AVFMT_RAWPICTURE | AVFMT_NOTIMESTAMPS,
 922 };
 923 #endif //CONFIG_MUXERS