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
  25 #ifdef CONFIG_MUXERS
  26 /* simple formats */
  27 static int raw_write_header(struct AVFormatContext *s)
  28 {
  29     return 0;
  30 }
  31
  32 static int flac_write_header(struct AVFormatContext *s)
  33 {
  34     static const uint8_t header[8] = {
  35         0x66, 0x4C, 0x61, 0x43, 0x80, 0x00, 0x00, 0x22
  36     };
  37     uint8_t *streaminfo = s->streams[0]->codec->extradata;
  38     int len = s->streams[0]->codec->extradata_size;
  39     if(streaminfo != NULL && len > 0) {
  40         put_buffer(&s->pb, header, 8);
  41         put_buffer(&s->pb, streaminfo, len);
  42     }
  43     return 0;
  44 }
  45
  46
  47 static int roq_write_header(struct AVFormatContext *s)
  48 {
  49     static const uint8_t header[] = {
  50         0x84, 0x10, 0xFF, 0xFF, 0xFF, 0xFF, 0x1E, 0x00
  51     };
  52
  53     put_buffer(&s->pb, header, 8);
  54     put_flush_packet(&s->pb);
  55
  56     return 0;
  57 }
  58
  59 static int raw_write_packet(struct AVFormatContext *s, AVPacket *pkt)
  60 {
  61     put_buffer(&s->pb, pkt->data, pkt->size);
  62     put_flush_packet(&s->pb);
  63     return 0;
  64 }
  65
  66 static int raw_write_trailer(struct AVFormatContext *s)
  67 {
  68     return 0;
  69 }
  70 #endif //CONFIG_MUXERS
  71
  72 /* raw input */
  73 static int raw_read_header(AVFormatContext *s, AVFormatParameters *ap)
  74 {
  75     AVStream *st;
  76     int id;
  77
  78     st = av_new_stream(s, 0);
  79     if (!st)
  80         return AVERROR_NOMEM;
  81
  82         id = s->iformat->value;
  83         if (id == CODEC_ID_RAWVIDEO) {
  84             st->codec->codec_type = CODEC_TYPE_VIDEO;
  85         } else {
  86             st->codec->codec_type = CODEC_TYPE_AUDIO;
  87         }
  88         st->codec->codec_id = id;
  89
  90         switch(st->codec->codec_type) {
  91         case CODEC_TYPE_AUDIO:
  92             st->codec->sample_rate = ap->sample_rate;
  93             st->codec->channels = ap->channels;
  94             av_set_pts_info(st, 64, 1, st->codec->sample_rate);
  95             break;
  96         case CODEC_TYPE_VIDEO:
  97             av_set_pts_info(st, 64, ap->time_base.num, ap->time_base.den);
  98             st->codec->width = ap->width;
  99             st->codec->height = ap->height;
 100             st->codec->pix_fmt = ap->pix_fmt;
 101             if(st->codec->pix_fmt == PIX_FMT_NONE)
 102                 st->codec->pix_fmt= PIX_FMT_YUV420P;
 103             break;
 104         default:
 105             return -1;
 106         }
 107     return 0;
 108 }
 109
 110 #define RAW_PACKET_SIZE 1024
 111
 112 static int raw_read_packet(AVFormatContext *s, AVPacket *pkt)
 113 {
 114     int ret, size;
 115     //    AVStream *st = s->streams[0];
 116
 117     size= RAW_PACKET_SIZE;
 118
 119     ret= av_get_packet(&s->pb, pkt, size);
 120
 121     pkt->stream_index = 0;
 122     if (ret <= 0) {
 123         return AVERROR_IO;
 124     }
 125     /* note: we need to modify the packet size here to handle the last
 126        packet */
 127     pkt->size = ret;
 128     return ret;
 129 }
 130
 131 static int raw_read_partial_packet(AVFormatContext *s, AVPacket *pkt)
 132 {
 133     int ret, size;
 134
 135     size = RAW_PACKET_SIZE;
 136
 137     if (av_new_packet(pkt, size) < 0)
 138         return AVERROR_IO;
 139
 140     pkt->pos= url_ftell(&s->pb);
 141     pkt->stream_index = 0;
 142     ret = get_partial_buffer(&s->pb, pkt->data, size);
 143     if (ret <= 0) {
 144         av_free_packet(pkt);
 145         return AVERROR_IO;
 146     }
 147     pkt->size = ret;
 148     return ret;
 149 }
 150
 151 // http://www.artificis.hu/files/texts/ingenient.txt
 152 static int ingenient_read_packet(AVFormatContext *s, AVPacket *pkt)
 153 {
 154     int ret, size, w, h, unk1, unk2;
 155
 156     if (get_le32(&s->pb) != MKTAG('M', 'J', 'P', 'G'))
 157         return AVERROR_IO; // FIXME
 158
 159     size = get_le32(&s->pb);
 160
 161     w = get_le16(&s->pb);
 162     h = get_le16(&s->pb);
 163
 164     url_fskip(&s->pb, 8); // zero + size (padded?)
 165     url_fskip(&s->pb, 2);
 166     unk1 = get_le16(&s->pb);
 167     unk2 = get_le16(&s->pb);
 168     url_fskip(&s->pb, 22); // ascii timestamp
 169
 170     av_log(NULL, AV_LOG_DEBUG, "Ingenient packet: size=%d, width=%d, height=%d, unk1=%d unk2=%d\n",
 171         size, w, h, unk1, unk2);
 172
 173     if (av_new_packet(pkt, size) < 0)
 174         return AVERROR_IO;
 175
 176     pkt->pos = url_ftell(&s->pb);
 177     pkt->stream_index = 0;
 178     ret = get_buffer(&s->pb, pkt->data, size);
 179     if (ret <= 0) {
 180         av_free_packet(pkt);
 181         return AVERROR_IO;
 182     }
 183     pkt->size = ret;
 184     return ret;
 185 }
 186
 187 static int raw_read_close(AVFormatContext *s)
 188 {
 189     return 0;
 190 }
 191
 192 int pcm_read_seek(AVFormatContext *s,
 193                   int stream_index, int64_t timestamp, int flags)
 194 {
 195     AVStream *st;
 196     int block_align, byte_rate;
 197     int64_t pos;
 198
 199     st = s->streams[0];
 200
 201     block_align = st->codec->block_align ? st->codec->block_align :
 202         (av_get_bits_per_sample(st->codec->codec_id) * st->codec->channels) >> 3;
 203     byte_rate = st->codec->bit_rate ? st->codec->bit_rate >> 3 :
 204         block_align * st->codec->sample_rate;
 205
 206     if (block_align <= 0 || byte_rate <= 0)
 207         return -1;
 208
 209     /* compute the position by aligning it to block_align */
 210     pos = av_rescale_rnd(timestamp * byte_rate,
 211                          st->time_base.num,
 212                          st->time_base.den * (int64_t)block_align,
 213                          (flags & AVSEEK_FLAG_BACKWARD) ? AV_ROUND_DOWN : AV_ROUND_UP);
 214     pos *= block_align;
 215
 216     /* recompute exact position */
 217     st->cur_dts = av_rescale(pos, st->time_base.den, byte_rate * (int64_t)st->time_base.num);
 218     url_fseek(&s->pb, pos + s->data_offset, SEEK_SET);
 219     return 0;
 220 }
 221
 222 /* ac3 read */
 223 static int ac3_read_header(AVFormatContext *s,
 224                            AVFormatParameters *ap)
 225 {
 226     AVStream *st;
 227
 228     st = av_new_stream(s, 0);
 229     if (!st)
 230         return AVERROR_NOMEM;
 231
 232     st->codec->codec_type = CODEC_TYPE_AUDIO;
 233     st->codec->codec_id = CODEC_ID_AC3;
 234     st->need_parsing = AVSTREAM_PARSE_FULL;
 235     /* the parameters will be extracted from the compressed bitstream */
 236     return 0;
 237 }
 238
 239 static int shorten_read_header(AVFormatContext *s,
 240                                AVFormatParameters *ap)
 241 {
 242     AVStream *st;
 243
 244     st = av_new_stream(s, 0);
 245     if (!st)
 246         return AVERROR_NOMEM;
 247     st->codec->codec_type = CODEC_TYPE_AUDIO;
 248     st->codec->codec_id = CODEC_ID_SHORTEN;
 249     st->need_parsing = AVSTREAM_PARSE_FULL;
 250     /* the parameters will be extracted from the compressed bitstream */
 251     return 0;
 252 }
 253
 254 /* flac read */
 255 static int flac_read_header(AVFormatContext *s,
 256                             AVFormatParameters *ap)
 257 {
 258     AVStream *st;
 259
 260     st = av_new_stream(s, 0);
 261     if (!st)
 262         return AVERROR_NOMEM;
 263     st->codec->codec_type = CODEC_TYPE_AUDIO;
 264     st->codec->codec_id = CODEC_ID_FLAC;
 265     st->need_parsing = AVSTREAM_PARSE_FULL;
 266     /* the parameters will be extracted from the compressed bitstream */
 267     return 0;
 268 }
 269
 270 /* dts read */
 271 static int dts_read_header(AVFormatContext *s,
 272                            AVFormatParameters *ap)
 273 {
 274     AVStream *st;
 275
 276     st = av_new_stream(s, 0);
 277     if (!st)
 278         return AVERROR_NOMEM;
 279
 280     st->codec->codec_type = CODEC_TYPE_AUDIO;
 281     st->codec->codec_id = CODEC_ID_DTS;
 282     st->need_parsing = AVSTREAM_PARSE_FULL;
 283     /* the parameters will be extracted from the compressed bitstream */
 284     return 0;
 285 }
 286
 287 /* aac read */
 288 static int aac_read_header(AVFormatContext *s,
 289                            AVFormatParameters *ap)
 290 {
 291     AVStream *st;
 292
 293     st = av_new_stream(s, 0);
 294     if (!st)
 295         return AVERROR_NOMEM;
 296
 297     st->codec->codec_type = CODEC_TYPE_AUDIO;
 298     st->codec->codec_id = CODEC_ID_AAC;
 299     st->need_parsing = AVSTREAM_PARSE_FULL;
 300     /* the parameters will be extracted from the compressed bitstream */
 301     return 0;
 302 }
 303
 304 /* mpeg1/h263 input */
 305 static int video_read_header(AVFormatContext *s,
 306                              AVFormatParameters *ap)
 307 {
 308     AVStream *st;
 309
 310     st = av_new_stream(s, 0);
 311     if (!st)
 312         return AVERROR_NOMEM;
 313
 314     st->codec->codec_type = CODEC_TYPE_VIDEO;
 315     st->codec->codec_id = s->iformat->value;
 316     st->need_parsing = AVSTREAM_PARSE_FULL;
 317
 318     /* for mjpeg, specify frame rate */
 319     /* for mpeg4 specify it too (most mpeg4 streams dont have the fixed_vop_rate set ...)*/
 320     if (ap->time_base.num) {
 321         av_set_pts_info(st, 64, ap->time_base.num, ap->time_base.den);
 322     } else if ( st->codec->codec_id == CODEC_ID_MJPEG ||
 323                 st->codec->codec_id == CODEC_ID_MPEG4 ||
 324                 st->codec->codec_id == CODEC_ID_H264) {
 325         av_set_pts_info(st, 64, 1, 25);
 326     }
 327
 328     return 0;
 329 }
 330
 331 #define SEQ_START_CODE          0x000001b3
 332 #define GOP_START_CODE          0x000001b8
 333 #define PICTURE_START_CODE      0x00000100
 334 #define SLICE_START_CODE        0x00000101
 335 #define PACK_START_CODE         0x000001ba
 336 #define VIDEO_ID                0x000001e0
 337 #define AUDIO_ID                0x000001c0
 338
 339 static int mpegvideo_probe(AVProbeData *p)
 340 {
 341     uint32_t code= -1;
 342     int pic=0, seq=0, slice=0, pspack=0, pes=0;
 343     int i;
 344
 345     for(i=0; i<p->buf_size; i++){
 346         code = (code<<8) + p->buf[i];
 347         if ((code & 0xffffff00) == 0x100) {
 348             switch(code){
 349             case     SEQ_START_CODE:   seq++; break;
 350             case PICTURE_START_CODE:   pic++; break;
 351             case   SLICE_START_CODE: slice++; break;
 352             case    PACK_START_CODE: pspack++; break;
 353             }
 354             if     ((code & 0x1f0) == VIDEO_ID)   pes++;
 355             else if((code & 0x1e0) == AUDIO_ID)   pes++;
 356         }
 357     }
 358     if(seq && seq*9<=pic*10 && pic*9<=slice*10 && !pspack && !pes)
 359         return AVPROBE_SCORE_MAX/2+1; // +1 for .mpg
 360     return 0;
 361 }
 362
 363 #define VISUAL_OBJECT_START_CODE       0x000001b5
 364 #define VOP_START_CODE                 0x000001b6
 365
 366 static int mpeg4video_probe(AVProbeData *probe_packet)
 367 {
 368     uint32_t temp_buffer= -1;
 369     int VO=0, VOL=0, VOP = 0, VISO = 0, res=0;
 370     int i;
 371
 372     for(i=0; i<probe_packet->buf_size; i++){
 373         temp_buffer = (temp_buffer<<8) + probe_packet->buf[i];
 374         if ((temp_buffer & 0xffffff00) == 0x100) {
 375             switch(temp_buffer){
 376             case VOP_START_CODE:             VOP++; break;
 377             case VISUAL_OBJECT_START_CODE:  VISO++; break;
 378             case 0x100 ... 0x11F:             VO++; break;
 379             case 0x120 ... 0x12F:            VOL++; break;
 380             case 0x130 ... 0x1AF:
 381             case 0x1B7 ... 0x1B9:
 382             case 0x1C4 ... 0x1FF:            res++; break;
 383             }
 384         }
 385     }
 386
 387     if ( VOP >= VISO && VOP >= VOL && VO >= VOL && VOL > 0 && res==0)
 388         return AVPROBE_SCORE_MAX/2;
 389     return 0;
 390 }
 391
 392 static int h263_probe(AVProbeData *p)
 393 {
 394     int code;
 395     const uint8_t *d;
 396
 397     d = p->buf;
 398     code = (d[0] << 14) | (d[1] << 6) | (d[2] >> 2);
 399     if (code == 0x20) {
 400         return 50;
 401     }
 402     return 0;
 403 }
 404
 405 static int h261_probe(AVProbeData *p)
 406 {
 407     int code;
 408     const uint8_t *d;
 409
 410     d = p->buf;
 411     code = (d[0] << 12) | (d[1] << 4) | (d[2] >> 4);
 412     if (code == 0x10) {
 413         return 50;
 414     }
 415     return 0;
 416 }
 417
 418 static int ac3_probe(AVProbeData *p)
 419 {
 420     int max_frames, first_frames, frames;
 421     uint8_t *buf, *buf2, *end;
 422     AC3HeaderInfo hdr;
 423
 424     if(p->buf_size < 7)
 425         return 0;
 426
 427     max_frames = 0;
 428     buf = p->buf;
 429     end = buf + FFMIN(4096, p->buf_size - 7);
 430
 431     for(; buf < end; buf++) {
 432         buf2 = buf;
 433
 434         for(frames = 0; buf2 < end; frames++) {
 435             if(ff_ac3_parse_header(buf2, &hdr) < 0)
 436                 break;
 437             buf2 += hdr.frame_size;
 438         }
 439         max_frames = FFMAX(max_frames, frames);
 440         if(buf == p->buf)
 441             first_frames = frames;
 442     }
 443     if   (first_frames>=3) return AVPROBE_SCORE_MAX * 3 / 4;
 444     else if(max_frames>=3) return AVPROBE_SCORE_MAX / 2;
 445     else if(max_frames>=1) return 1;
 446     else                   return 0;
 447 }
 448
 449 AVInputFormat shorten_demuxer = {
 450     "shn",
 451     "raw shorten",
 452     0,
 453     NULL,
 454     shorten_read_header,
 455     raw_read_partial_packet,
 456     raw_read_close,
 457     .flags= AVFMT_GENERIC_INDEX,
 458     .extensions = "shn",
 459 };
 460
 461 AVInputFormat flac_demuxer = {
 462     "flac",
 463     "raw flac",
 464     0,
 465     NULL,
 466     flac_read_header,
 467     raw_read_partial_packet,
 468     raw_read_close,
 469     .flags= AVFMT_GENERIC_INDEX,
 470     .extensions = "flac",
 471 };
 472
 473 #ifdef CONFIG_MUXERS
 474 AVOutputFormat flac_muxer = {
 475     "flac",
 476     "raw flac",
 477     "audio/x-flac",
 478     "flac",
 479     0,
 480     CODEC_ID_FLAC,
 481     0,
 482     flac_write_header,
 483     raw_write_packet,
 484     raw_write_trailer,
 485     .flags= AVFMT_NOTIMESTAMPS,
 486 };
 487 #endif //CONFIG_MUXERS
 488
 489 #ifdef CONFIG_AC3_DEMUXER
 490 AVInputFormat ac3_demuxer = {
 491     "ac3",
 492     "raw ac3",
 493     0,
 494     ac3_probe,
 495     ac3_read_header,
 496     raw_read_partial_packet,
 497     raw_read_close,
 498     .flags= AVFMT_GENERIC_INDEX,
 499     .extensions = "ac3",
 500 };
 501 #endif
 502
 503 #ifdef CONFIG_MUXERS
 504 AVOutputFormat ac3_muxer = {
 505     "ac3",
 506     "raw ac3",
 507     "audio/x-ac3",
 508     "ac3",
 509     0,
 510     CODEC_ID_AC3,
 511     0,
 512     raw_write_header,
 513     raw_write_packet,
 514     raw_write_trailer,
 515     .flags= AVFMT_NOTIMESTAMPS,
 516 };
 517 #endif //CONFIG_MUXERS
 518
 519 AVInputFormat dts_demuxer = {
 520     "dts",
 521     "raw dts",
 522     0,
 523     NULL,
 524     dts_read_header,
 525     raw_read_partial_packet,
 526     raw_read_close,
 527     .flags= AVFMT_GENERIC_INDEX,
 528     .extensions = "dts",
 529 };
 530
 531 AVInputFormat aac_demuxer = {
 532     "aac",
 533     "ADTS AAC",
 534     0,
 535     NULL,
 536     aac_read_header,
 537     raw_read_partial_packet,
 538     raw_read_close,
 539     .flags= AVFMT_GENERIC_INDEX,
 540     .extensions = "aac",
 541 };
 542
 543 #ifdef CONFIG_ROQ_MUXER
 544 AVOutputFormat roq_muxer =
 545 {
 546     "RoQ",
 547     "Id RoQ format",
 548     NULL,
 549     "roq",
 550     0,
 551     CODEC_ID_ROQ_DPCM,
 552     CODEC_ID_ROQ,
 553     roq_write_header,
 554     raw_write_packet,
 555     raw_write_trailer,
 556 };
 557 #endif //CONFIG_ROQ_MUXER
 558
 559 AVInputFormat h261_demuxer = {
 560     "h261",
 561     "raw h261",
 562     0,
 563     h261_probe,
 564     video_read_header,
 565     raw_read_partial_packet,
 566     raw_read_close,
 567     .flags= AVFMT_GENERIC_INDEX,
 568     .extensions = "h261",
 569     .value = CODEC_ID_H261,
 570 };
 571
 572 #ifdef CONFIG_MUXERS
 573 AVOutputFormat h261_muxer = {
 574     "h261",
 575     "raw h261",
 576     "video/x-h261",
 577     "h261",
 578     0,
 579     0,
 580     CODEC_ID_H261,
 581     raw_write_header,
 582     raw_write_packet,
 583     raw_write_trailer,
 584     .flags= AVFMT_NOTIMESTAMPS,
 585 };
 586 #endif //CONFIG_MUXERS
 587
 588 AVInputFormat h263_demuxer = {
 589     "h263",
 590     "raw h263",
 591     0,
 592     h263_probe,
 593     video_read_header,
 594     raw_read_partial_packet,
 595     raw_read_close,
 596     .flags= AVFMT_GENERIC_INDEX,
 597 //    .extensions = "h263", //FIXME remove after writing mpeg4_probe
 598     .value = CODEC_ID_H263,
 599 };
 600
 601 #ifdef CONFIG_MUXERS
 602 AVOutputFormat h263_muxer = {
 603     "h263",
 604     "raw h263",
 605     "video/x-h263",
 606     "h263",
 607     0,
 608     0,
 609     CODEC_ID_H263,
 610     raw_write_header,
 611     raw_write_packet,
 612     raw_write_trailer,
 613     .flags= AVFMT_NOTIMESTAMPS,
 614 };
 615 #endif //CONFIG_MUXERS
 616
 617 AVInputFormat m4v_demuxer = {
 618     "m4v",
 619     "raw MPEG4 video format",
 620     0,
 621     mpeg4video_probe, /** probing for mpeg4 data */
 622     video_read_header,
 623     raw_read_partial_packet,
 624     raw_read_close,
 625     .flags= AVFMT_GENERIC_INDEX,
 626     .extensions = "m4v", //FIXME remove after writing mpeg4_probe
 627     .value = CODEC_ID_MPEG4,
 628 };
 629
 630 #ifdef CONFIG_MUXERS
 631 AVOutputFormat m4v_muxer = {
 632     "m4v",
 633     "raw MPEG4 video format",
 634     NULL,
 635     "m4v",
 636     0,
 637     CODEC_ID_NONE,
 638     CODEC_ID_MPEG4,
 639     raw_write_header,
 640     raw_write_packet,
 641     raw_write_trailer,
 642     .flags= AVFMT_NOTIMESTAMPS,
 643 };
 644 #endif //CONFIG_MUXERS
 645
 646 AVInputFormat h264_demuxer = {
 647     "h264",
 648     "raw H264 video format",
 649     0,
 650     NULL /*mpegvideo_probe*/,
 651     video_read_header,
 652     raw_read_partial_packet,
 653     raw_read_close,
 654     .flags= AVFMT_GENERIC_INDEX,
 655     .extensions = "h26l,h264,264", //FIXME remove after writing mpeg4_probe
 656     .value = CODEC_ID_H264,
 657 };
 658
 659 #ifdef CONFIG_MUXERS
 660 AVOutputFormat h264_muxer = {
 661     "h264",
 662     "raw H264 video format",
 663     NULL,
 664     "h264",
 665     0,
 666     CODEC_ID_NONE,
 667     CODEC_ID_H264,
 668     raw_write_header,
 669     raw_write_packet,
 670     raw_write_trailer,
 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     raw_write_header,
 697     raw_write_packet,
 698     raw_write_trailer,
 699     .flags= AVFMT_NOTIMESTAMPS,
 700 };
 701 #endif //CONFIG_MUXERS
 702
 703 #ifdef CONFIG_MUXERS
 704 AVOutputFormat mpeg2video_muxer = {
 705     "mpeg2video",
 706     "MPEG2 video",
 707     NULL,
 708     "m2v",
 709     0,
 710     0,
 711     CODEC_ID_MPEG2VIDEO,
 712     raw_write_header,
 713     raw_write_packet,
 714     raw_write_trailer,
 715     .flags= AVFMT_NOTIMESTAMPS,
 716 };
 717 #endif //CONFIG_MUXERS
 718
 719 AVInputFormat mjpeg_demuxer = {
 720     "mjpeg",
 721     "MJPEG video",
 722     0,
 723     NULL,
 724     video_read_header,
 725     raw_read_partial_packet,
 726     raw_read_close,
 727     .flags= AVFMT_GENERIC_INDEX,
 728     .extensions = "mjpg,mjpeg",
 729     .value = CODEC_ID_MJPEG,
 730 };
 731
 732 AVInputFormat ingenient_demuxer = {
 733     "ingenient",
 734     "Ingenient MJPEG",
 735     0,
 736     NULL,
 737     video_read_header,
 738     ingenient_read_packet,
 739     raw_read_close,
 740     .flags= AVFMT_GENERIC_INDEX,
 741     .extensions = "cgi", // FIXME
 742     .value = CODEC_ID_MJPEG,
 743 };
 744
 745 #ifdef CONFIG_MUXERS
 746 AVOutputFormat mjpeg_muxer = {
 747     "mjpeg",
 748     "MJPEG video",
 749     "video/x-mjpeg",
 750     "mjpg,mjpeg",
 751     0,
 752     0,
 753     CODEC_ID_MJPEG,
 754     raw_write_header,
 755     raw_write_packet,
 756     raw_write_trailer,
 757     .flags= AVFMT_NOTIMESTAMPS,
 758 };
 759 #endif //CONFIG_MUXERS
 760
 761 AVInputFormat vc1_demuxer = {
 762     "vc1",
 763     "raw vc1",
 764     0,
 765     NULL /* vc1_probe */,
 766     video_read_header,
 767     raw_read_partial_packet,
 768     raw_read_close,
 769     .extensions = "vc1",
 770     .value = CODEC_ID_VC1,
 771 };
 772
 773 /* pcm formats */
 774
 775 #define PCMINPUTDEF(name, long_name, ext, codec) \
 776 AVInputFormat pcm_ ## name ## _demuxer = {\
 777     #name,\
 778     long_name,\
 779     0,\
 780     NULL,\
 781     raw_read_header,\
 782     raw_read_packet,\
 783     raw_read_close,\
 784     pcm_read_seek,\
 785     .flags= AVFMT_GENERIC_INDEX,\
 786     .extensions = ext,\
 787     .value = codec,\
 788 };
 789
 790 #define PCMOUTPUTDEF(name, long_name, ext, codec) \
 791 AVOutputFormat pcm_ ## name ## _muxer = {\
 792     #name,\
 793     long_name,\
 794     NULL,\
 795     ext,\
 796     0,\
 797     codec,\
 798     0,\
 799     raw_write_header,\
 800     raw_write_packet,\
 801     raw_write_trailer,\
 802     .flags= AVFMT_NOTIMESTAMPS,\
 803 };
 804
 805
 806 #if !defined(CONFIG_MUXERS) && defined(CONFIG_DEMUXERS)
 807 #define PCMDEF(name, long_name, ext, codec) \
 808         PCMINPUTDEF(name, long_name, ext, codec)
 809 #elif defined(CONFIG_MUXERS) && !defined(CONFIG_DEMUXERS)
 810 #define PCMDEF(name, long_name, ext, codec) \
 811         PCMOUTPUTDEF(name, long_name, ext, codec)
 812 #elif defined(CONFIG_MUXERS) && defined(CONFIG_DEMUXERS)
 813 #define PCMDEF(name, long_name, ext, codec) \
 814         PCMINPUTDEF(name, long_name, ext, codec)\
 815         PCMOUTPUTDEF(name, long_name, ext, codec)
 816 #else
 817 #define PCMDEF(name, long_name, ext, codec)
 818 #endif
 819
 820 #ifdef WORDS_BIGENDIAN
 821 #define BE_DEF(s) s
 822 #define LE_DEF(s) NULL
 823 #else
 824 #define BE_DEF(s) NULL
 825 #define LE_DEF(s) s
 826 #endif
 827
 828
 829 PCMDEF(s16le, "pcm signed 16 bit little endian format",
 830        LE_DEF("sw"), CODEC_ID_PCM_S16LE)
 831
 832 PCMDEF(s16be, "pcm signed 16 bit big endian format",
 833        BE_DEF("sw"), CODEC_ID_PCM_S16BE)
 834
 835 PCMDEF(u16le, "pcm unsigned 16 bit little endian format",
 836        LE_DEF("uw"), CODEC_ID_PCM_U16LE)
 837
 838 PCMDEF(u16be, "pcm unsigned 16 bit big endian format",
 839        BE_DEF("uw"), CODEC_ID_PCM_U16BE)
 840
 841 PCMDEF(s8, "pcm signed 8 bit format",
 842        "sb", CODEC_ID_PCM_S8)
 843
 844 PCMDEF(u8, "pcm unsigned 8 bit format",
 845        "ub", CODEC_ID_PCM_U8)
 846
 847 PCMDEF(mulaw, "pcm mu law format",
 848        "ul", CODEC_ID_PCM_MULAW)
 849
 850 PCMDEF(alaw, "pcm A law format",
 851        "al", CODEC_ID_PCM_ALAW)
 852
 853 static int rawvideo_read_packet(AVFormatContext *s, AVPacket *pkt)
 854 {
 855     int packet_size, ret, width, height;
 856     AVStream *st = s->streams[0];
 857
 858     width = st->codec->width;
 859     height = st->codec->height;
 860
 861     packet_size = avpicture_get_size(st->codec->pix_fmt, width, height);
 862     if (packet_size < 0)
 863         return -1;
 864
 865     ret= av_get_packet(&s->pb, pkt, packet_size);
 866
 867     pkt->stream_index = 0;
 868     if (ret != packet_size) {
 869         return AVERROR_IO;
 870     } else {
 871         return 0;
 872     }
 873 }
 874
 875 AVInputFormat rawvideo_demuxer = {
 876     "rawvideo",
 877     "raw video format",
 878     0,
 879     NULL,
 880     raw_read_header,
 881     rawvideo_read_packet,
 882     raw_read_close,
 883     .flags= AVFMT_GENERIC_INDEX,
 884     .extensions = "yuv,cif,qcif",
 885     .value = CODEC_ID_RAWVIDEO,
 886 };
 887
 888 #ifdef CONFIG_MUXERS
 889 AVOutputFormat rawvideo_muxer = {
 890     "rawvideo",
 891     "raw video format",
 892     NULL,
 893     "yuv,rgb",
 894     0,
 895     CODEC_ID_NONE,
 896     CODEC_ID_RAWVIDEO,
 897     raw_write_header,
 898     raw_write_packet,
 899     raw_write_trailer,
 900     .flags= AVFMT_NOTIMESTAMPS,
 901 };
 902 #endif //CONFIG_MUXERS
 903
 904 #ifdef CONFIG_MUXERS
 905 static int null_write_packet(struct AVFormatContext *s, AVPacket *pkt)
 906 {
 907     return 0;
 908 }
 909
 910 AVOutputFormat null_muxer = {
 911     "null",
 912     "null video format",
 913     NULL,
 914     NULL,
 915     0,
 916 #ifdef WORDS_BIGENDIAN
 917     CODEC_ID_PCM_S16BE,
 918 #else
 919     CODEC_ID_PCM_S16LE,
 920 #endif
 921     CODEC_ID_RAWVIDEO,
 922     raw_write_header,
 923     null_write_packet,
 924     raw_write_trailer,
 925     .flags = AVFMT_NOFILE | AVFMT_RAWPICTURE | AVFMT_NOTIMESTAMPS,
 926 };
 927 #endif //CONFIG_MUXERS