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 23#include "libavutil/crc.h" 24#include "libavcodec/ac3_parser.h" 25#include "libavcodec/get_bits.h" 26#include "libavcodec/bytestream.h" 27#include "avformat.h" 28#include "raw.h" 29#include "id3v2.h" 30#include "id3v1.h" 31 32/* simple formats */ 33 34#if CONFIG_ROQ_MUXER 35static int roq_write_header(struct AVFormatContext *s) 36{ 37 static const uint8_t header[] = { 38 0x84, 0x10, 0xFF, 0xFF, 0xFF, 0xFF, 0x1E, 0x00 39 }; 40 41 put_buffer(s->pb, header, 8); 42 put_flush_packet(s->pb); 43 44 return 0; 45} 46#endif 47 48#if CONFIG_NULL_MUXER 49static int null_write_packet(struct AVFormatContext *s, AVPacket *pkt) 50{ 51 return 0; 52} 53#endif 54 55#if CONFIG_MUXERS 56static int raw_write_packet(struct AVFormatContext *s, AVPacket *pkt) 57{ 58 put_buffer(s->pb, pkt->data, pkt->size); 59 put_flush_packet(s->pb); 60 return 0; 61} 62#endif 63 64#if CONFIG_DEMUXERS 65/* raw input */ 66static int raw_read_header(AVFormatContext *s, AVFormatParameters *ap) 67{ 68 AVStream *st; 69 enum CodecID 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 = AVMEDIA_TYPE_VIDEO; 78 } else { 79 st->codec->codec_type = AVMEDIA_TYPE_AUDIO; 80 } 81 st->codec->codec_id = id; 82 83 switch(st->codec->codec_type) { 84 case AVMEDIA_TYPE_AUDIO: 85 st->codec->sample_rate = ap->sample_rate; 86 if(ap->channels) st->codec->channels = ap->channels; 87 else st->codec->channels = 1; 88 st->codec->bits_per_coded_sample = av_get_bits_per_sample(st->codec->codec_id); 89 assert(st->codec->bits_per_coded_sample > 0); 90 st->codec->block_align = st->codec->bits_per_coded_sample*st->codec->channels/8; 91 av_set_pts_info(st, 64, 1, st->codec->sample_rate); 92 break; 93 case AVMEDIA_TYPE_VIDEO: 94 if(ap->time_base.num) 95 av_set_pts_info(st, 64, ap->time_base.num, ap->time_base.den); 96 else 97 av_set_pts_info(st, 64, 1, 25); 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#define RAW_SAMPLES 1024 112 113static int raw_read_packet(AVFormatContext *s, AVPacket *pkt) 114{ 115 int ret, size, bps; 116 // AVStream *st = s->streams[0]; 117 118 size= RAW_SAMPLES*s->streams[0]->codec->block_align; 119 120 ret= av_get_packet(s->pb, pkt, size); 121 122 pkt->stream_index = 0; 123 if (ret < 0) 124 return ret; 125 126 bps= av_get_bits_per_sample(s->streams[0]->codec->codec_id); 127 assert(bps); // if false there IS a bug elsewhere (NOT in this function) 128 pkt->dts= 129 pkt->pts= pkt->pos*8 / (bps * s->streams[0]->codec->channels); 130 131 return ret; 132} 133 134int ff_raw_read_partial_packet(AVFormatContext *s, AVPacket *pkt) 135{ 136 int ret, size; 137 138 size = RAW_PACKET_SIZE; 139 140 if (av_new_packet(pkt, size) < 0) 141 return AVERROR(ENOMEM); 142 143 pkt->pos= url_ftell(s->pb); 144 pkt->stream_index = 0; 145 ret = get_partial_buffer(s->pb, pkt->data, size); 146 if (ret < 0) { 147 av_free_packet(pkt); 148 return ret; 149 } 150 pkt->size = ret; 151 return ret; 152} 153#endif 154 155#if CONFIG_RAWVIDEO_DEMUXER 156static int rawvideo_read_packet(AVFormatContext *s, AVPacket *pkt) 157{ 158 int packet_size, ret, width, height; 159 AVStream *st = s->streams[0]; 160 161 width = st->codec->width; 162 height = st->codec->height; 163 164 packet_size = avpicture_get_size(st->codec->pix_fmt, width, height); 165 if (packet_size < 0) 166 return -1; 167 168 ret= av_get_packet(s->pb, pkt, packet_size); 169 pkt->pts= 170 pkt->dts= pkt->pos / packet_size; 171 172 pkt->stream_index = 0; 173 if (ret < 0) 174 return ret; 175 return 0; 176} 177#endif 178 179#if CONFIG_INGENIENT_DEMUXER 180// http://www.artificis.hu/files/texts/ingenient.txt 181static int ingenient_read_packet(AVFormatContext *s, AVPacket *pkt) 182{ 183 int ret, size, w, h, unk1, unk2; 184 185 if (get_le32(s->pb) != MKTAG('M', 'J', 'P', 'G')) 186 return AVERROR(EIO); // FIXME 187 188 size = get_le32(s->pb); 189 190 w = get_le16(s->pb); 191 h = get_le16(s->pb); 192 193 url_fskip(s->pb, 8); // zero + size (padded?) 194 url_fskip(s->pb, 2); 195 unk1 = get_le16(s->pb); 196 unk2 = get_le16(s->pb); 197 url_fskip(s->pb, 22); // ASCII timestamp 198 199 av_log(s, AV_LOG_DEBUG, "Ingenient packet: size=%d, width=%d, height=%d, unk1=%d unk2=%d\n", 200 size, w, h, unk1, unk2); 201 202 if (av_new_packet(pkt, size) < 0) 203 return AVERROR(ENOMEM); 204 205 pkt->pos = url_ftell(s->pb); 206 pkt->stream_index = 0; 207 ret = get_buffer(s->pb, pkt->data, size); 208 if (ret < 0) { 209 av_free_packet(pkt); 210 return ret; 211 } 212 pkt->size = ret; 213 return ret; 214} 215#endif 216 217#if CONFIG_DEMUXERS 218int pcm_read_seek(AVFormatContext *s, 219 int stream_index, int64_t timestamp, int flags) 220{ 221 AVStream *st; 222 int block_align, byte_rate; 223 int64_t pos, ret; 224 225 st = s->streams[0]; 226 227 block_align = st->codec->block_align ? st->codec->block_align : 228 (av_get_bits_per_sample(st->codec->codec_id) * st->codec->channels) >> 3; 229 byte_rate = st->codec->bit_rate ? st->codec->bit_rate >> 3 : 230 block_align * st->codec->sample_rate; 231 232 if (block_align <= 0 || byte_rate <= 0) 233 return -1; 234 if (timestamp < 0) timestamp = 0; 235 236 /* compute the position by aligning it to block_align */ 237 pos = av_rescale_rnd(timestamp * byte_rate, 238 st->time_base.num, 239 st->time_base.den * (int64_t)block_align, 240 (flags & AVSEEK_FLAG_BACKWARD) ? AV_ROUND_DOWN : AV_ROUND_UP); 241 pos *= block_align; 242 243 /* recompute exact position */ 244 st->cur_dts = av_rescale(pos, st->time_base.den, byte_rate * (int64_t)st->time_base.num); 245 if ((ret = url_fseek(s->pb, pos + s->data_offset, SEEK_SET)) < 0) 246 return ret; 247 return 0; 248} 249 250static int audio_read_header(AVFormatContext *s, 251 AVFormatParameters *ap) 252{ 253 AVStream *st = av_new_stream(s, 0); 254 if (!st) 255 return AVERROR(ENOMEM); 256 st->codec->codec_type = AVMEDIA_TYPE_AUDIO; 257 st->codec->codec_id = s->iformat->value; 258 st->need_parsing = AVSTREAM_PARSE_FULL; 259 /* the parameters will be extracted from the compressed bitstream */ 260 261 return 0; 262} 263 264/* MPEG-1/H.263 input */ 265static int video_read_header(AVFormatContext *s, 266 AVFormatParameters *ap) 267{ 268 AVStream *st; 269 270 st = av_new_stream(s, 0); 271 if (!st) 272 return AVERROR(ENOMEM); 273 274 st->codec->codec_type = AVMEDIA_TYPE_VIDEO; 275 st->codec->codec_id = s->iformat->value; 276 st->need_parsing = AVSTREAM_PARSE_FULL; 277 278 /* for MJPEG, specify frame rate */ 279 /* for MPEG-4 specify it, too (most MPEG-4 streams do not have the fixed_vop_rate set ...)*/ 280 if (ap->time_base.num) { 281 st->codec->time_base= ap->time_base; 282 } else if ( st->codec->codec_id == CODEC_ID_MJPEG || 283 st->codec->codec_id == CODEC_ID_MPEG4 || 284 st->codec->codec_id == CODEC_ID_DIRAC || 285 st->codec->codec_id == CODEC_ID_DNXHD || 286 st->codec->codec_id == CODEC_ID_H264) { 287 st->codec->time_base= (AVRational){1,25}; 288 } 289 av_set_pts_info(st, 64, 1, 1200000); 290 291 return 0; 292} 293#endif 294 295#if CONFIG_MPEGVIDEO_DEMUXER 296#define SEQ_START_CODE 0x000001b3 297#define GOP_START_CODE 0x000001b8 298#define PICTURE_START_CODE 0x00000100 299#define SLICE_START_CODE 0x00000101 300#define PACK_START_CODE 0x000001ba 301#define VIDEO_ID 0x000001e0 302#define AUDIO_ID 0x000001c0 303 304static int mpegvideo_probe(AVProbeData *p) 305{ 306 uint32_t code= -1; 307 int pic=0, seq=0, slice=0, pspack=0, pes=0; 308 int i; 309 310 for(i=0; i<p->buf_size; i++){ 311 code = (code<<8) + p->buf[i]; 312 if ((code & 0xffffff00) == 0x100) { 313 switch(code){ 314 case SEQ_START_CODE: seq++; break; 315 case PICTURE_START_CODE: pic++; break; 316 case SLICE_START_CODE: slice++; break; 317 case PACK_START_CODE: pspack++; break; 318 } 319 if ((code & 0x1f0) == VIDEO_ID) pes++; 320 else if((code & 0x1e0) == AUDIO_ID) pes++; 321 } 322 } 323 if(seq && seq*9<=pic*10 && pic*9<=slice*10 && !pspack && !pes) 324 return pic>1 ? AVPROBE_SCORE_MAX/2+1 : AVPROBE_SCORE_MAX/4; // +1 for .mpg 325 return 0; 326} 327#endif 328 329#if CONFIG_CAVSVIDEO_DEMUXER 330#define CAVS_SEQ_START_CODE 0x000001b0 331#define CAVS_PIC_I_START_CODE 0x000001b3 332#define CAVS_UNDEF_START_CODE 0x000001b4 333#define CAVS_PIC_PB_START_CODE 0x000001b6 334#define CAVS_VIDEO_EDIT_CODE 0x000001b7 335#define CAVS_PROFILE_JIZHUN 0x20 336 337static int cavsvideo_probe(AVProbeData *p) 338{ 339 uint32_t code= -1; 340 int pic=0, seq=0, slice_pos = 0; 341 int i; 342 343 for(i=0; i<p->buf_size; i++){ 344 code = (code<<8) + p->buf[i]; 345 if ((code & 0xffffff00) == 0x100) { 346 if(code < CAVS_SEQ_START_CODE) { 347 /* slices have to be consecutive */ 348 if(code < slice_pos) 349 return 0; 350 slice_pos = code; 351 } else { 352 slice_pos = 0; 353 } 354 if (code == CAVS_SEQ_START_CODE) { 355 seq++; 356 /* check for the only currently supported profile */ 357 if(p->buf[i+1] != CAVS_PROFILE_JIZHUN) 358 return 0; 359 } else if ((code == CAVS_PIC_I_START_CODE) || 360 (code == CAVS_PIC_PB_START_CODE)) { 361 pic++; 362 } else if ((code == CAVS_UNDEF_START_CODE) || 363 (code > CAVS_VIDEO_EDIT_CODE)) { 364 return 0; 365 } 366 } 367 } 368 if(seq && seq*9<=pic*10) 369 return AVPROBE_SCORE_MAX/2; 370 return 0; 371} 372#endif 373 374#if CONFIG_M4V_DEMUXER 375#define VISUAL_OBJECT_START_CODE 0x000001b5 376#define VOP_START_CODE 0x000001b6 377 378static int mpeg4video_probe(AVProbeData *probe_packet) 379{ 380 uint32_t temp_buffer= -1; 381 int VO=0, VOL=0, VOP = 0, VISO = 0, res=0; 382 int i; 383 384 for(i=0; i<probe_packet->buf_size; i++){ 385 temp_buffer = (temp_buffer<<8) + probe_packet->buf[i]; 386 if ((temp_buffer & 0xffffff00) != 0x100) 387 continue; 388 389 if (temp_buffer == VOP_START_CODE) VOP++; 390 else if (temp_buffer == VISUAL_OBJECT_START_CODE) VISO++; 391 else if (temp_buffer < 0x120) VO++; 392 else if (temp_buffer < 0x130) VOL++; 393 else if ( !(0x1AF < temp_buffer && temp_buffer < 0x1B7) 394 && !(0x1B9 < temp_buffer && temp_buffer < 0x1C4)) res++; 395 } 396 397 if ( VOP >= VISO && VOP >= VOL && VO >= VOL && VOL > 0 && res==0) 398 return AVPROBE_SCORE_MAX/2; 399 return 0; 400} 401#endif 402 403#if CONFIG_H264_DEMUXER 404static int h264_probe(AVProbeData *p) 405{ 406 uint32_t code= -1; 407 int sps=0, pps=0, idr=0, res=0, sli=0; 408 int i; 409 410 for(i=0; i<p->buf_size; i++){ 411 code = (code<<8) + p->buf[i]; 412 if ((code & 0xffffff00) == 0x100) { 413 int ref_idc= (code>>5)&3; 414 int type = code & 0x1F; 415 static const int8_t ref_zero[32]={ 416 2, 0, 0, 0, 0,-1, 1,-1, 417 -1, 1, 1, 1, 1,-1, 2, 2, 418 2, 2, 2, 0, 2, 2, 2, 2, 419 2, 2, 2, 2, 2, 2, 2, 2 420 }; 421 422 if(code & 0x80) //forbidden bit 423 return 0; 424 425 if(ref_zero[type] == 1 && ref_idc) 426 return 0; 427 if(ref_zero[type] ==-1 && !ref_idc) 428 return 0; 429 if(ref_zero[type] == 2) 430 res++; 431 432 switch(type){ 433 case 1: sli++; break; 434 case 5: idr++; break; 435 case 7: 436 if(p->buf[i+2]&0x0F) 437 return 0; 438 sps++; 439 break; 440 case 8: pps++; break; 441 } 442 } 443 } 444 if(sps && pps && (idr||sli>3) && res<(sps+pps+idr)) 445 return AVPROBE_SCORE_MAX/2+1; // +1 for .mpg 446 return 0; 447} 448#endif 449 450#if CONFIG_H263_DEMUXER 451static int h263_probe(AVProbeData *p) 452{ 453 uint64_t code= -1; 454 int i; 455 int valid_psc=0; 456 int invalid_psc=0; 457 int res_change=0; 458 int src_fmt, last_src_fmt=-1; 459 460 for(i=0; i<p->buf_size; i++){ 461 code = (code<<8) + p->buf[i]; 462 if ((code & 0xfffffc0000) == 0x800000) { 463 src_fmt= (code>>2)&3; 464 if( src_fmt != last_src_fmt 465 && last_src_fmt>0 && last_src_fmt<6 466 && src_fmt<6) 467 res_change++; 468 469 if((code&0x300)==0x200 && src_fmt){ 470 valid_psc++; 471 }else 472 invalid_psc++; 473 last_src_fmt= src_fmt; 474 } 475 } 476//av_log(NULL, AV_LOG_ERROR, "h263_probe: psc:%d invalid:%d res_change:%d\n", valid_psc, invalid_psc, res_change); 477//h263_probe: psc:3 invalid:0 res_change:0 (1588/recent_ffmpeg_parses_mpg_incorrectly.mpg) 478 if(valid_psc > 2*invalid_psc + 2*res_change + 3){ 479 return 50; 480 }else if(valid_psc > 2*invalid_psc) 481 return 25; 482 return 0; 483} 484#endif 485 486#if CONFIG_H261_DEMUXER 487static int h261_probe(AVProbeData *p) 488{ 489 uint32_t code= -1; 490 int i; 491 int valid_psc=0; 492 int invalid_psc=0; 493 int next_gn=0; 494 int src_fmt=0; 495 GetBitContext gb; 496 497 init_get_bits(&gb, p->buf, p->buf_size*8); 498 499 for(i=0; i<p->buf_size*8; i++){ 500 if ((code & 0x01ff0000) || !(code & 0xff00)) { 501 code = (code<<8) + get_bits(&gb, 8); 502 i += 7; 503 } else 504 code = (code<<1) + get_bits1(&gb); 505 if ((code & 0xffff0000) == 0x10000) { 506 int gn= (code>>12)&0xf; 507 if(!gn) 508 src_fmt= code&8; 509 if(gn != next_gn) invalid_psc++; 510 else valid_psc++; 511 512 if(src_fmt){ // CIF 513 next_gn= (gn+1 )%13; 514 }else{ //QCIF 515 next_gn= (gn+1+!!gn)% 7; 516 } 517 } 518 } 519 if(valid_psc > 2*invalid_psc + 6){ 520 return 50; 521 }else if(valid_psc > 2*invalid_psc + 2) 522 return 25; 523 return 0; 524} 525#endif 526 527#if CONFIG_DTS_DEMUXER 528#define DCA_MARKER_14B_BE 0x1FFFE800 529#define DCA_MARKER_14B_LE 0xFF1F00E8 530#define DCA_MARKER_RAW_BE 0x7FFE8001 531#define DCA_MARKER_RAW_LE 0xFE7F0180 532static int dts_probe(AVProbeData *p) 533{ 534 const uint8_t *buf, *bufp; 535 uint32_t state = -1; 536 int markers[3] = {0}; 537 int sum, max; 538 539 buf = p->buf; 540 541 for(; buf < (p->buf+p->buf_size)-2; buf+=2) { 542 bufp = buf; 543 state = (state << 16) | bytestream_get_be16(&bufp); 544 545 /* regular bitstream */ 546 if (state == DCA_MARKER_RAW_BE || state == DCA_MARKER_RAW_LE) 547 markers[0]++; 548 549 /* 14 bits big-endian bitstream */ 550 if (state == DCA_MARKER_14B_BE) 551 if ((bytestream_get_be16(&bufp) & 0xFFF0) == 0x07F0) 552 markers[1]++; 553 554 /* 14 bits little-endian bitstream */ 555 if (state == DCA_MARKER_14B_LE) 556 if ((bytestream_get_be16(&bufp) & 0xF0FF) == 0xF007) 557 markers[2]++; 558 } 559 sum = markers[0] + markers[1] + markers[2]; 560 max = markers[1] > markers[0]; 561 max = markers[2] > markers[max] ? 2 : max; 562 if (markers[max] > 3 && p->buf_size / markers[max] < 32*1024 && 563 markers[max] * 4 > sum * 3) 564 return AVPROBE_SCORE_MAX/2+1; 565 566 return 0; 567} 568#endif 569 570#if CONFIG_DIRAC_DEMUXER 571static int dirac_probe(AVProbeData *p) 572{ 573 if (AV_RL32(p->buf) == MKTAG('B', 'B', 'C', 'D')) 574 return AVPROBE_SCORE_MAX; 575 else 576 return 0; 577} 578#endif 579 580#if CONFIG_DNXHD_DEMUXER 581static int dnxhd_probe(AVProbeData *p) 582{ 583 static const uint8_t header[] = {0x00,0x00,0x02,0x80,0x01}; 584 int w, h, compression_id; 585 if (p->buf_size < 0x2c) 586 return 0; 587 if (memcmp(p->buf, header, 5)) 588 return 0; 589 h = AV_RB16(p->buf + 0x18); 590 w = AV_RB16(p->buf + 0x1a); 591 if (!w || !h) 592 return 0; 593 compression_id = AV_RB32(p->buf + 0x28); 594 if (compression_id < 1237 || compression_id > 1253) 595 return 0; 596 return AVPROBE_SCORE_MAX; 597} 598#endif 599 600#if CONFIG_AC3_DEMUXER || CONFIG_EAC3_DEMUXER 601static int ac3_eac3_probe(AVProbeData *p, enum CodecID expected_codec_id) 602{ 603 int max_frames, first_frames = 0, frames; 604 uint8_t *buf, *buf2, *end; 605 AC3HeaderInfo hdr; 606 GetBitContext gbc; 607 enum CodecID codec_id = CODEC_ID_AC3; 608 609 max_frames = 0; 610 buf = p->buf; 611 end = buf + p->buf_size; 612 613 for(; buf < end; buf++) { 614 buf2 = buf; 615 616 for(frames = 0; buf2 < end; frames++) { 617 init_get_bits(&gbc, buf2, 54); 618 if(ff_ac3_parse_header(&gbc, &hdr) < 0) 619 break; 620 if(buf2 + hdr.frame_size > end || 621 av_crc(av_crc_get_table(AV_CRC_16_ANSI), 0, buf2 + 2, hdr.frame_size - 2)) 622 break; 623 if (hdr.bitstream_id > 10) 624 codec_id = CODEC_ID_EAC3; 625 buf2 += hdr.frame_size; 626 } 627 max_frames = FFMAX(max_frames, frames); 628 if(buf == p->buf) 629 first_frames = frames; 630 } 631 if(codec_id != expected_codec_id) return 0; 632 // keep this in sync with mp3 probe, both need to avoid 633 // issues with MPEG-files! 634 if (first_frames>=4) return AVPROBE_SCORE_MAX/2+1; 635 else if(max_frames>500)return AVPROBE_SCORE_MAX/2; 636 else if(max_frames>=4) return AVPROBE_SCORE_MAX/4; 637 else if(max_frames>=1) return 1; 638 else return 0; 639} 640#endif 641 642#if CONFIG_AC3_DEMUXER 643static int ac3_probe(AVProbeData *p) 644{ 645 return ac3_eac3_probe(p, CODEC_ID_AC3); 646} 647#endif 648 649#if CONFIG_EAC3_DEMUXER 650static int eac3_probe(AVProbeData *p) 651{ 652 return ac3_eac3_probe(p, CODEC_ID_EAC3); 653} 654#endif 655 656#if CONFIG_AAC_DEMUXER 657static int adts_aac_probe(AVProbeData *p) 658{ 659 int max_frames = 0, first_frames = 0; 660 int fsize, frames; 661 uint8_t *buf0 = p->buf; 662 uint8_t *buf2; 663 uint8_t *buf; 664 uint8_t *end = buf0 + p->buf_size - 7; 665 666 if (ff_id3v2_match(buf0)) { 667 buf0 += ff_id3v2_tag_len(buf0); 668 } 669 buf = buf0; 670 671 for(; buf < end; buf= buf2+1) { 672 buf2 = buf; 673 674 for(frames = 0; buf2 < end; frames++) { 675 uint32_t header = AV_RB16(buf2); 676 if((header&0xFFF6) != 0xFFF0) 677 break; 678 fsize = (AV_RB32(buf2+3)>>13) & 0x8FFF; 679 if(fsize < 7) 680 break; 681 buf2 += fsize; 682 } 683 max_frames = FFMAX(max_frames, frames); 684 if(buf == buf0) 685 first_frames= frames; 686 } 687 if (first_frames>=3) return AVPROBE_SCORE_MAX/2+1; 688 else if(max_frames>500)return AVPROBE_SCORE_MAX/2; 689 else if(max_frames>=3) return AVPROBE_SCORE_MAX/4; 690 else if(max_frames>=1) return 1; 691 else return 0; 692} 693 694static int adts_aac_read_header(AVFormatContext *s, 695 AVFormatParameters *ap) 696{ 697 AVStream *st; 698 699 st = av_new_stream(s, 0); 700 if (!st) 701 return AVERROR(ENOMEM); 702 703 st->codec->codec_type = AVMEDIA_TYPE_AUDIO; 704 st->codec->codec_id = s->iformat->value; 705 st->need_parsing = AVSTREAM_PARSE_FULL; 706 707 ff_id3v1_read(s); 708 ff_id3v2_read(s); 709 710 return 0; 711} 712 713#endif 714 715/* Note: Do not forget to add new entries to the Makefile as well. */ 716 717#if CONFIG_AAC_DEMUXER 718AVInputFormat aac_demuxer = { 719 "aac", 720 NULL_IF_CONFIG_SMALL("raw ADTS AAC"), 721 0, 722 adts_aac_probe, 723 adts_aac_read_header, 724 ff_raw_read_partial_packet, 725 .flags= AVFMT_GENERIC_INDEX, 726 .extensions = "aac", 727 .value = CODEC_ID_AAC, 728}; 729#endif 730 731#if CONFIG_AC3_DEMUXER 732AVInputFormat ac3_demuxer = { 733 "ac3", 734 NULL_IF_CONFIG_SMALL("raw AC-3"), 735 0, 736 ac3_probe, 737 audio_read_header, 738 ff_raw_read_partial_packet, 739 .flags= AVFMT_GENERIC_INDEX, 740 .extensions = "ac3", 741 .value = CODEC_ID_AC3, 742}; 743#endif 744 745#if CONFIG_AC3_MUXER 746AVOutputFormat ac3_muxer = { 747 "ac3", 748 NULL_IF_CONFIG_SMALL("raw AC-3"), 749 "audio/x-ac3", 750 "ac3", 751 0, 752 CODEC_ID_AC3, 753 CODEC_ID_NONE, 754 NULL, 755 raw_write_packet, 756 .flags= AVFMT_NOTIMESTAMPS, 757}; 758#endif 759 760#if CONFIG_DIRAC_DEMUXER 761AVInputFormat dirac_demuxer = { 762 "dirac", 763 NULL_IF_CONFIG_SMALL("raw Dirac"), 764 0, 765 dirac_probe, 766 video_read_header, 767 ff_raw_read_partial_packet, 768 .flags= AVFMT_GENERIC_INDEX, 769 .value = CODEC_ID_DIRAC, 770}; 771#endif 772 773#if CONFIG_DIRAC_MUXER 774AVOutputFormat dirac_muxer = { 775 "dirac", 776 NULL_IF_CONFIG_SMALL("raw Dirac"), 777 NULL, 778 "drc", 779 0, 780 CODEC_ID_NONE, 781 CODEC_ID_DIRAC, 782 NULL, 783 raw_write_packet, 784 .flags= AVFMT_NOTIMESTAMPS, 785}; 786#endif 787 788#if CONFIG_DNXHD_DEMUXER 789AVInputFormat dnxhd_demuxer = { 790 "dnxhd", 791 NULL_IF_CONFIG_SMALL("raw DNxHD (SMPTE VC-3)"), 792 0, 793 dnxhd_probe, 794 video_read_header, 795 ff_raw_read_partial_packet, 796 .flags= AVFMT_GENERIC_INDEX, 797 .value = CODEC_ID_DNXHD, 798}; 799#endif 800 801#if CONFIG_DNXHD_MUXER 802AVOutputFormat dnxhd_muxer = { 803 "dnxhd", 804 NULL_IF_CONFIG_SMALL("raw DNxHD (SMPTE VC-3)"), 805 NULL, 806 "dnxhd", 807 0, 808 CODEC_ID_NONE, 809 CODEC_ID_DNXHD, 810 NULL, 811 raw_write_packet, 812 .flags= AVFMT_NOTIMESTAMPS, 813}; 814#endif 815 816#if CONFIG_DTS_DEMUXER 817AVInputFormat dts_demuxer = { 818 "dts", 819 NULL_IF_CONFIG_SMALL("raw DTS"), 820 0, 821 dts_probe, 822 audio_read_header, 823 ff_raw_read_partial_packet, 824 .flags= AVFMT_GENERIC_INDEX, 825 .extensions = "dts", 826 .value = CODEC_ID_DTS, 827}; 828#endif 829 830#if CONFIG_DTS_MUXER 831AVOutputFormat dts_muxer = { 832 "dts", 833 NULL_IF_CONFIG_SMALL("raw DTS"), 834 "audio/x-dca", 835 "dts", 836 0, 837 CODEC_ID_DTS, 838 CODEC_ID_NONE, 839 NULL, 840 raw_write_packet, 841 .flags= AVFMT_NOTIMESTAMPS, 842}; 843#endif 844 845#if CONFIG_EAC3_DEMUXER 846AVInputFormat eac3_demuxer = { 847 "eac3", 848 NULL_IF_CONFIG_SMALL("raw E-AC-3"), 849 0, 850 eac3_probe, 851 audio_read_header, 852 ff_raw_read_partial_packet, 853 .flags= AVFMT_GENERIC_INDEX, 854 .extensions = "eac3", 855 .value = CODEC_ID_EAC3, 856}; 857#endif 858 859#if CONFIG_EAC3_MUXER 860AVOutputFormat eac3_muxer = { 861 "eac3", 862 NULL_IF_CONFIG_SMALL("raw E-AC-3"), 863 "audio/x-eac3", 864 "eac3", 865 0, 866 CODEC_ID_EAC3, 867 CODEC_ID_NONE, 868 NULL, 869 raw_write_packet, 870 .flags= AVFMT_NOTIMESTAMPS, 871}; 872#endif 873 874#if CONFIG_GSM_DEMUXER 875AVInputFormat gsm_demuxer = { 876 "gsm", 877 NULL_IF_CONFIG_SMALL("raw GSM"), 878 0, 879 NULL, 880 audio_read_header, 881 ff_raw_read_partial_packet, 882 .flags= AVFMT_GENERIC_INDEX, 883 .extensions = "gsm", 884 .value = CODEC_ID_GSM, 885}; 886#endif 887 888#if CONFIG_H261_DEMUXER 889AVInputFormat h261_demuxer = { 890 "h261", 891 NULL_IF_CONFIG_SMALL("raw H.261"), 892 0, 893 h261_probe, 894 video_read_header, 895 ff_raw_read_partial_packet, 896 .flags= AVFMT_GENERIC_INDEX, 897 .extensions = "h261", 898 .value = CODEC_ID_H261, 899}; 900#endif 901 902#if CONFIG_H261_MUXER 903AVOutputFormat h261_muxer = { 904 "h261", 905 NULL_IF_CONFIG_SMALL("raw H.261"), 906 "video/x-h261", 907 "h261", 908 0, 909 CODEC_ID_NONE, 910 CODEC_ID_H261, 911 NULL, 912 raw_write_packet, 913 .flags= AVFMT_NOTIMESTAMPS, 914}; 915#endif 916 917#if CONFIG_H263_DEMUXER 918AVInputFormat h263_demuxer = { 919 "h263", 920 NULL_IF_CONFIG_SMALL("raw H.263"), 921 0, 922 h263_probe, 923 video_read_header, 924 ff_raw_read_partial_packet, 925 .flags= AVFMT_GENERIC_INDEX, 926// .extensions = "h263", //FIXME remove after writing mpeg4_probe 927 .value = CODEC_ID_H263, 928}; 929#endif 930 931#if CONFIG_H263_MUXER 932AVOutputFormat h263_muxer = { 933 "h263", 934 NULL_IF_CONFIG_SMALL("raw H.263"), 935 "video/x-h263", 936 "h263", 937 0, 938 CODEC_ID_NONE, 939 CODEC_ID_H263, 940 NULL, 941 raw_write_packet, 942 .flags= AVFMT_NOTIMESTAMPS, 943}; 944#endif 945 946#if CONFIG_H264_DEMUXER 947AVInputFormat h264_demuxer = { 948 "h264", 949 NULL_IF_CONFIG_SMALL("raw H.264 video format"), 950 0, 951 h264_probe, 952 video_read_header, 953 ff_raw_read_partial_packet, 954 .flags= AVFMT_GENERIC_INDEX, 955 .extensions = "h26l,h264,264", //FIXME remove after writing mpeg4_probe 956 .value = CODEC_ID_H264, 957}; 958#endif 959 960#if CONFIG_H264_MUXER 961AVOutputFormat h264_muxer = { 962 "h264", 963 NULL_IF_CONFIG_SMALL("raw H.264 video format"), 964 NULL, 965 "h264", 966 0, 967 CODEC_ID_NONE, 968 CODEC_ID_H264, 969 NULL, 970 raw_write_packet, 971 .flags= AVFMT_NOTIMESTAMPS, 972}; 973#endif 974 975#if CONFIG_INGENIENT_DEMUXER 976AVInputFormat ingenient_demuxer = { 977 "ingenient", 978 NULL_IF_CONFIG_SMALL("raw Ingenient MJPEG"), 979 0, 980 NULL, 981 video_read_header, 982 ingenient_read_packet, 983 .flags= AVFMT_GENERIC_INDEX, 984 .extensions = "cgi", // FIXME 985 .value = CODEC_ID_MJPEG, 986}; 987#endif 988 989#if CONFIG_M4V_DEMUXER 990AVInputFormat m4v_demuxer = { 991 "m4v", 992 NULL_IF_CONFIG_SMALL("raw MPEG-4 video format"), 993 0, 994 mpeg4video_probe, /** probing for MPEG-4 data */ 995 video_read_header, 996 ff_raw_read_partial_packet, 997 .flags= AVFMT_GENERIC_INDEX, 998 .extensions = "m4v", 999 .value = CODEC_ID_MPEG4, 1000}; 1001#endif 1002 1003#if CONFIG_M4V_MUXER 1004AVOutputFormat m4v_muxer = { 1005 "m4v", 1006 NULL_IF_CONFIG_SMALL("raw MPEG-4 video format"), 1007 NULL, 1008 "m4v", 1009 0, 1010 CODEC_ID_NONE, 1011 CODEC_ID_MPEG4, 1012 NULL, 1013 raw_write_packet, 1014 .flags= AVFMT_NOTIMESTAMPS, 1015}; 1016#endif 1017 1018#if CONFIG_MJPEG_DEMUXER 1019AVInputFormat mjpeg_demuxer = { 1020 "mjpeg", 1021 NULL_IF_CONFIG_SMALL("raw MJPEG video"), 1022 0, 1023 NULL, 1024 video_read_header, 1025 ff_raw_read_partial_packet, 1026 .flags= AVFMT_GENERIC_INDEX, 1027 .extensions = "mjpg,mjpeg", 1028 .value = CODEC_ID_MJPEG, 1029}; 1030#endif 1031 1032#if CONFIG_MJPEG_MUXER 1033AVOutputFormat mjpeg_muxer = { 1034 "mjpeg", 1035 NULL_IF_CONFIG_SMALL("raw MJPEG video"), 1036 "video/x-mjpeg", 1037 "mjpg,mjpeg", 1038 0, 1039 CODEC_ID_NONE, 1040 CODEC_ID_MJPEG, 1041 NULL, 1042 raw_write_packet, 1043 .flags= AVFMT_NOTIMESTAMPS, 1044}; 1045#endif 1046 1047#if CONFIG_MLP_DEMUXER 1048AVInputFormat mlp_demuxer = { 1049 "mlp", 1050 NULL_IF_CONFIG_SMALL("raw MLP"), 1051 0, 1052 NULL, 1053 audio_read_header, 1054 ff_raw_read_partial_packet, 1055 .flags= AVFMT_GENERIC_INDEX, 1056 .extensions = "mlp", 1057 .value = CODEC_ID_MLP, 1058}; 1059#endif 1060 1061#if CONFIG_MLP_MUXER 1062AVOutputFormat mlp_muxer = { 1063 "mlp", 1064 NULL_IF_CONFIG_SMALL("raw MLP"), 1065 NULL, 1066 "mlp", 1067 0, 1068 CODEC_ID_MLP, 1069 CODEC_ID_NONE, 1070 NULL, 1071 raw_write_packet, 1072 .flags= AVFMT_NOTIMESTAMPS, 1073}; 1074#endif 1075 1076#if CONFIG_TRUEHD_DEMUXER 1077AVInputFormat truehd_demuxer = { 1078 "truehd", 1079 NULL_IF_CONFIG_SMALL("raw TrueHD"), 1080 0, 1081 NULL, 1082 audio_read_header, 1083 ff_raw_read_partial_packet, 1084 .flags= AVFMT_GENERIC_INDEX, 1085 .extensions = "thd", 1086 .value = CODEC_ID_TRUEHD, 1087}; 1088#endif 1089 1090#if CONFIG_TRUEHD_MUXER 1091AVOutputFormat truehd_muxer = { 1092 "truehd", 1093 NULL_IF_CONFIG_SMALL("raw TrueHD"), 1094 NULL, 1095 "thd", 1096 0, 1097 CODEC_ID_TRUEHD, 1098 CODEC_ID_NONE, 1099 NULL, 1100 raw_write_packet, 1101 .flags= AVFMT_NOTIMESTAMPS, 1102}; 1103#endif 1104 1105#if CONFIG_MPEG1VIDEO_MUXER 1106AVOutputFormat mpeg1video_muxer = { 1107 "mpeg1video", 1108 NULL_IF_CONFIG_SMALL("raw MPEG-1 video"), 1109 "video/x-mpeg", 1110 "mpg,mpeg,m1v", 1111 0, 1112 CODEC_ID_NONE, 1113 CODEC_ID_MPEG1VIDEO, 1114 NULL, 1115 raw_write_packet, 1116 .flags= AVFMT_NOTIMESTAMPS, 1117}; 1118#endif 1119 1120#if CONFIG_MPEG2VIDEO_MUXER 1121AVOutputFormat mpeg2video_muxer = { 1122 "mpeg2video", 1123 NULL_IF_CONFIG_SMALL("raw MPEG-2 video"), 1124 NULL, 1125 "m2v", 1126 0, 1127 CODEC_ID_NONE, 1128 CODEC_ID_MPEG2VIDEO, 1129 NULL, 1130 raw_write_packet, 1131 .flags= AVFMT_NOTIMESTAMPS, 1132}; 1133#endif 1134 1135#if CONFIG_MPEGVIDEO_DEMUXER 1136AVInputFormat mpegvideo_demuxer = { 1137 "mpegvideo", 1138 NULL_IF_CONFIG_SMALL("raw MPEG video"), 1139 0, 1140 mpegvideo_probe, 1141 video_read_header, 1142 ff_raw_read_partial_packet, 1143 .flags= AVFMT_GENERIC_INDEX, 1144 .value = CODEC_ID_MPEG1VIDEO, 1145}; 1146#endif 1147 1148#if CONFIG_CAVSVIDEO_DEMUXER 1149AVInputFormat cavsvideo_demuxer = { 1150 "cavsvideo", 1151 NULL_IF_CONFIG_SMALL("raw Chinese AVS video"), 1152 0, 1153 cavsvideo_probe, 1154 video_read_header, 1155 ff_raw_read_partial_packet, 1156 .flags= AVFMT_GENERIC_INDEX, 1157 .value = CODEC_ID_CAVS, 1158}; 1159#endif 1160 1161#if CONFIG_NULL_MUXER 1162AVOutputFormat null_muxer = { 1163 "null", 1164 NULL_IF_CONFIG_SMALL("raw null video format"), 1165 NULL, 1166 NULL, 1167 0, 1168#if HAVE_BIGENDIAN 1169 CODEC_ID_PCM_S16BE, 1170#else 1171 CODEC_ID_PCM_S16LE, 1172#endif 1173 CODEC_ID_RAWVIDEO, 1174 NULL, 1175 null_write_packet, 1176 .flags = AVFMT_NOFILE | AVFMT_RAWPICTURE | AVFMT_NOTIMESTAMPS, 1177}; 1178#endif 1179 1180#if CONFIG_RAWVIDEO_DEMUXER 1181AVInputFormat rawvideo_demuxer = { 1182 "rawvideo", 1183 NULL_IF_CONFIG_SMALL("raw video format"), 1184 0, 1185 NULL, 1186 raw_read_header, 1187 rawvideo_read_packet, 1188 .flags= AVFMT_GENERIC_INDEX, 1189 .extensions = "yuv,cif,qcif,rgb", 1190 .value = CODEC_ID_RAWVIDEO, 1191}; 1192#endif 1193 1194#if CONFIG_RAWVIDEO_MUXER 1195AVOutputFormat rawvideo_muxer = { 1196 "rawvideo", 1197 NULL_IF_CONFIG_SMALL("raw video format"), 1198 NULL, 1199 "yuv,rgb", 1200 0, 1201 CODEC_ID_NONE, 1202 CODEC_ID_RAWVIDEO, 1203 NULL, 1204 raw_write_packet, 1205 .flags= AVFMT_NOTIMESTAMPS, 1206}; 1207#endif 1208 1209#if CONFIG_ROQ_MUXER 1210AVOutputFormat roq_muxer = 1211{ 1212 "RoQ", 1213 NULL_IF_CONFIG_SMALL("raw id RoQ format"), 1214 NULL, 1215 "roq", 1216 0, 1217 CODEC_ID_ROQ_DPCM, 1218 CODEC_ID_ROQ, 1219 roq_write_header, 1220 raw_write_packet, 1221}; 1222#endif 1223 1224#if CONFIG_SHORTEN_DEMUXER 1225AVInputFormat shorten_demuxer = { 1226 "shn", 1227 NULL_IF_CONFIG_SMALL("raw Shorten"), 1228 0, 1229 NULL, 1230 audio_read_header, 1231 ff_raw_read_partial_packet, 1232 .flags= AVFMT_GENERIC_INDEX, 1233 .extensions = "shn", 1234 .value = CODEC_ID_SHORTEN, 1235}; 1236#endif 1237 1238#if CONFIG_VC1_DEMUXER 1239AVInputFormat vc1_demuxer = { 1240 "vc1", 1241 NULL_IF_CONFIG_SMALL("raw VC-1"), 1242 0, 1243 NULL /* vc1_probe */, 1244 video_read_header, 1245 ff_raw_read_partial_packet, 1246 .extensions = "vc1", 1247 .value = CODEC_ID_VC1, 1248}; 1249#endif 1250 1251/* PCM formats */ 1252 1253#define PCMINPUTDEF(name, long_name, ext, codec) \ 1254AVInputFormat pcm_ ## name ## _demuxer = {\ 1255 #name,\ 1256 NULL_IF_CONFIG_SMALL(long_name),\ 1257 0,\ 1258 NULL,\ 1259 raw_read_header,\ 1260 raw_read_packet,\ 1261 NULL,\ 1262 pcm_read_seek,\ 1263 .flags= AVFMT_GENERIC_INDEX,\ 1264 .extensions = ext,\ 1265 .value = codec,\ 1266}; 1267 1268#define PCMOUTPUTDEF(name, long_name, ext, codec) \ 1269AVOutputFormat pcm_ ## name ## _muxer = {\ 1270 #name,\ 1271 NULL_IF_CONFIG_SMALL(long_name),\ 1272 NULL,\ 1273 ext,\ 1274 0,\ 1275 codec,\ 1276 CODEC_ID_NONE,\ 1277 NULL,\ 1278 raw_write_packet,\ 1279 .flags= AVFMT_NOTIMESTAMPS,\ 1280}; 1281 1282 1283#if !CONFIG_MUXERS && CONFIG_DEMUXERS 1284#define PCMDEF(name, long_name, ext, codec) \ 1285 PCMINPUTDEF(name, long_name, ext, codec) 1286#elif CONFIG_MUXERS && !CONFIG_DEMUXERS 1287#define PCMDEF(name, long_name, ext, codec) \ 1288 PCMOUTPUTDEF(name, long_name, ext, codec) 1289#elif CONFIG_MUXERS && CONFIG_DEMUXERS 1290#define PCMDEF(name, long_name, ext, codec) \ 1291 PCMINPUTDEF(name, long_name, ext, codec)\ 1292 PCMOUTPUTDEF(name, long_name, ext, codec) 1293#else 1294#define PCMDEF(name, long_name, ext, codec) 1295#endif 1296 1297#if HAVE_BIGENDIAN 1298#define BE_DEF(s) s 1299#define LE_DEF(s) NULL 1300#else 1301#define BE_DEF(s) NULL 1302#define LE_DEF(s) s 1303#endif 1304 1305PCMDEF(f64be, "PCM 64 bit floating-point big-endian format", 1306 NULL, CODEC_ID_PCM_F64BE) 1307 1308PCMDEF(f64le, "PCM 64 bit floating-point little-endian format", 1309 NULL, CODEC_ID_PCM_F64LE) 1310 1311PCMDEF(f32be, "PCM 32 bit floating-point big-endian format", 1312 NULL, CODEC_ID_PCM_F32BE) 1313 1314PCMDEF(f32le, "PCM 32 bit floating-point little-endian format", 1315 NULL, CODEC_ID_PCM_F32LE) 1316 1317PCMDEF(s32be, "PCM signed 32 bit big-endian format", 1318 NULL, CODEC_ID_PCM_S32BE) 1319 1320PCMDEF(s32le, "PCM signed 32 bit little-endian format", 1321 NULL, CODEC_ID_PCM_S32LE) 1322 1323PCMDEF(s24be, "PCM signed 24 bit big-endian format", 1324 NULL, CODEC_ID_PCM_S24BE) 1325 1326PCMDEF(s24le, "PCM signed 24 bit little-endian format", 1327 NULL, CODEC_ID_PCM_S24LE) 1328 1329PCMDEF(s16be, "PCM signed 16 bit big-endian format", 1330 BE_DEF("sw"), CODEC_ID_PCM_S16BE) 1331 1332PCMDEF(s16le, "PCM signed 16 bit little-endian format", 1333 LE_DEF("sw"), CODEC_ID_PCM_S16LE) 1334 1335PCMDEF(s8, "PCM signed 8 bit format", 1336 "sb", CODEC_ID_PCM_S8) 1337 1338PCMDEF(u32be, "PCM unsigned 32 bit big-endian format", 1339 NULL, CODEC_ID_PCM_U32BE) 1340 1341PCMDEF(u32le, "PCM unsigned 32 bit little-endian format", 1342 NULL, CODEC_ID_PCM_U32LE) 1343 1344PCMDEF(u24be, "PCM unsigned 24 bit big-endian format", 1345 NULL, CODEC_ID_PCM_U24BE) 1346 1347PCMDEF(u24le, "PCM unsigned 24 bit little-endian format", 1348 NULL, CODEC_ID_PCM_U24LE) 1349 1350PCMDEF(u16be, "PCM unsigned 16 bit big-endian format", 1351 BE_DEF("uw"), CODEC_ID_PCM_U16BE) 1352 1353PCMDEF(u16le, "PCM unsigned 16 bit little-endian format", 1354 LE_DEF("uw"), CODEC_ID_PCM_U16LE) 1355 1356PCMDEF(u8, "PCM unsigned 8 bit format", 1357 "ub", CODEC_ID_PCM_U8) 1358 1359PCMDEF(alaw, "PCM A-law format", 1360 "al", CODEC_ID_PCM_ALAW) 1361 1362PCMDEF(mulaw, "PCM mu-law format", 1363 "ul", CODEC_ID_PCM_MULAW) 1364