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FFmpeg/libavformat/raw.c

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  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/bitstream.h"

  26. #include "libavcodec/bytestream.h"

  27. #include "avformat.h"

  28. #include "raw.h"

  29. #include "id3v2.h"

  30. 

  31. /* simple formats */

  32. 

  33. #if CONFIG_ROQ_MUXER

  34. static int roq_write_header(struct AVFormatContext *s)

  35. {

  36.     static const uint8_t header[] = {

  37.         0x84, 0x10, 0xFF, 0xFF, 0xFF, 0xFF, 0x1E, 0x00

  38.     };

  39. 

  40.     put_buffer(s->pb, header, 8);

  41.     put_flush_packet(s->pb);

  42. 

  43.     return 0;

  44. }

  45. #endif

  46. 

  47. #if CONFIG_NULL_MUXER

  48. static int null_write_packet(struct AVFormatContext *s, AVPacket *pkt)

  49. {

  50.     return 0;

  51. }

  52. #endif

  53. 

  54. #if CONFIG_MUXERS

  55. static int raw_write_packet(struct AVFormatContext *s, AVPacket *pkt)

  56. {

  57.     put_buffer(s->pb, pkt->data, pkt->size);

  58.     put_flush_packet(s->pb);

  59.     return 0;

  60. }

  61. #endif

  62. 

  63. #if CONFIG_DEMUXERS

  64. /* raw input */

  65. static int raw_read_header(AVFormatContext *s, AVFormatParameters *ap)

  66. {

  67.     AVStream *st;

  68.     int id;

  69. 

  70.     st = av_new_stream(s, 0);

  71.     if (!st)

  72.         return AVERROR(ENOMEM);

  73. 

  74.         id = s->iformat->value;

  75.         if (id == CODEC_ID_RAWVIDEO) {

  76.             st->codec->codec_type = CODEC_TYPE_VIDEO;

  77.         } else {

  78.             st->codec->codec_type = CODEC_TYPE_AUDIO;

  79.         }

  80.         st->codec->codec_id = id;

  81. 

  82.         switch(st->codec->codec_type) {

  83.         case CODEC_TYPE_AUDIO:

  84.             st->codec->sample_rate = ap->sample_rate;

  85.             if(ap->channels) st->codec->channels = ap->channels;

  86.             else             st->codec->channels = 1;

  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. int ff_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. #endif

  153. 

  154. #if CONFIG_RAWVIDEO_DEMUXER

  155. static int rawvideo_read_packet(AVFormatContext *s, AVPacket *pkt)

  156. {

  157.     int packet_size, ret, width, height;

  158.     AVStream *st = s->streams[0];

  159. 

  160.     width = st->codec->width;

  161.     height = st->codec->height;

  162. 

  163.     packet_size = avpicture_get_size(st->codec->pix_fmt, width, height);

  164.     if (packet_size < 0)

  165.         return -1;

  166. 

  167.     ret= av_get_packet(s->pb, pkt, packet_size);

  168.     pkt->pts=

  169.     pkt->dts= pkt->pos / packet_size;

  170. 

  171.     pkt->stream_index = 0;

  172.     if (ret != packet_size) {

  173.         return AVERROR(EIO);

  174.     } else {

  175.         return 0;

  176.     }

  177. }

  178. #endif

  179. 

  180. #if CONFIG_INGENIENT_DEMUXER

  181. // http://www.artificis.hu/files/texts/ingenient.txt

  182. static int ingenient_read_packet(AVFormatContext *s, AVPacket *pkt)

  183. {

  184.     int ret, size, w, h, unk1, unk2;

  185. 

  186.     if (get_le32(s->pb) != MKTAG('M', 'J', 'P', 'G'))

  187.         return AVERROR(EIO); // FIXME

  188. 

  189.     size = get_le32(s->pb);

  190. 

  191.     w = get_le16(s->pb);

  192.     h = get_le16(s->pb);

  193. 

  194.     url_fskip(s->pb, 8); // zero + size (padded?)

  195.     url_fskip(s->pb, 2);

  196.     unk1 = get_le16(s->pb);

  197.     unk2 = get_le16(s->pb);

  198.     url_fskip(s->pb, 22); // ASCII timestamp

  199. 

  200.     av_log(s, AV_LOG_DEBUG, "Ingenient packet: size=%d, width=%d, height=%d, unk1=%d unk2=%d\n",

  201.         size, w, h, unk1, unk2);

  202. 

  203.     if (av_new_packet(pkt, size) < 0)

  204.         return AVERROR(EIO);

  205. 

  206.     pkt->pos = url_ftell(s->pb);

  207.     pkt->stream_index = 0;

  208.     ret = get_buffer(s->pb, pkt->data, size);

  209.     if (ret <= 0) {

  210.         av_free_packet(pkt);

  211.         return AVERROR(EIO);

  212.     }

  213.     pkt->size = ret;

  214.     return ret;

  215. }

  216. #endif

  217. 

  218. #if CONFIG_DEMUXERS

  219. int pcm_read_seek(AVFormatContext *s,

  220.                   int stream_index, int64_t timestamp, int flags)

  221. {

  222.     AVStream *st;

  223.     int block_align, byte_rate, ret;

  224.     int64_t pos;

  225. 

  226.     st = s->streams[0];

  227. 

  228.     block_align = st->codec->block_align ? st->codec->block_align :

  229.         (av_get_bits_per_sample(st->codec->codec_id) * st->codec->channels) >> 3;

  230.     byte_rate = st->codec->bit_rate ? st->codec->bit_rate >> 3 :

  231.         block_align * st->codec->sample_rate;

  232. 

  233.     if (block_align <= 0 || byte_rate <= 0)

  234.         return -1;

  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. 

  250. static 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 = CODEC_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 */

  265. static 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 = CODEC_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.         av_set_pts_info(st, 64, ap->time_base.num, ap->time_base.den);

  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_H264) {

  286.         av_set_pts_info(st, 64, 1, 25);

  287.     }

  288. 

  289.     return 0;

  290. }

  291. #endif

  292. 

  293. #if CONFIG_MPEGVIDEO_DEMUXER

  294. #define SEQ_START_CODE          0x000001b3

  295. #define GOP_START_CODE          0x000001b8

  296. #define PICTURE_START_CODE      0x00000100

  297. #define SLICE_START_CODE        0x00000101

  298. #define PACK_START_CODE         0x000001ba

  299. #define VIDEO_ID                0x000001e0

  300. #define AUDIO_ID                0x000001c0

  301. 

  302. static int mpegvideo_probe(AVProbeData *p)

  303. {

  304.     uint32_t code= -1;

  305.     int pic=0, seq=0, slice=0, pspack=0, pes=0;

  306.     int i;

  307. 

  308.     for(i=0; i<p->buf_size; i++){

  309.         code = (code<<8) + p->buf[i];

  310.         if ((code & 0xffffff00) == 0x100) {

  311.             switch(code){

  312.             case     SEQ_START_CODE:   seq++; break;

  313.             case PICTURE_START_CODE:   pic++; break;

  314.             case   SLICE_START_CODE: slice++; break;

  315.             case    PACK_START_CODE: pspack++; break;

  316.             }

  317.             if     ((code & 0x1f0) == VIDEO_ID)   pes++;

  318.             else if((code & 0x1e0) == AUDIO_ID)   pes++;

  319.         }

  320.     }

  321.     if(seq && seq*9<=pic*10 && pic*9<=slice*10 && !pspack && !pes)

  322.         return AVPROBE_SCORE_MAX/2+1; // +1 for .mpg

  323.     return 0;

  324. }

  325. 

  326. #define CAVS_SEQ_START_CODE       0x000001b0

  327. #define CAVS_PIC_I_START_CODE     0x000001b3

  328. #define CAVS_UNDEF_START_CODE     0x000001b4

  329. #define CAVS_PIC_PB_START_CODE    0x000001b6

  330. #define CAVS_VIDEO_EDIT_CODE      0x000001b7

  331. #define CAVS_PROFILE_JIZHUN       0x20

  332. 

  333. static int cavsvideo_probe(AVProbeData *p)

  334. {

  335.     uint32_t code= -1;

  336.     int pic=0, seq=0, slice_pos = 0;

  337.     int i;

  338. 

  339.     for(i=0; i<p->buf_size; i++){

  340.         code = (code<<8) + p->buf[i];

  341.         if ((code & 0xffffff00) == 0x100) {

  342.             if(code < CAVS_SEQ_START_CODE) {

  343.                 /* slices have to be consecutive */

  344.                 if(code < slice_pos)

  345.                     return 0;

  346.                 slice_pos = code;

  347.             } else {

  348.                 slice_pos = 0;

  349.             }

  350.             if (code == CAVS_SEQ_START_CODE) {

  351.                 seq++;

  352.                 /* check for the only currently supported profile */

  353.                 if(p->buf[i+1] != CAVS_PROFILE_JIZHUN)

  354.                     return 0;

  355.             } else if ((code == CAVS_PIC_I_START_CODE) ||

  356.                        (code == CAVS_PIC_PB_START_CODE)) {

  357.                 pic++;

  358.             } else if ((code == CAVS_UNDEF_START_CODE) ||

  359.                        (code >  CAVS_VIDEO_EDIT_CODE)) {

  360.                 return 0;

  361.             }

  362.         }

  363.     }

  364.     if(seq && seq*9<=pic*10)

  365.         return AVPROBE_SCORE_MAX/2;

  366.     return 0;

  367. }

  368. #endif

  369. 

  370. #if CONFIG_M4V_DEMUXER

  371. #define VISUAL_OBJECT_START_CODE       0x000001b5

  372. #define VOP_START_CODE                 0x000001b6

  373. 

  374. static int mpeg4video_probe(AVProbeData *probe_packet)

  375. {

  376.     uint32_t temp_buffer= -1;

  377.     int VO=0, VOL=0, VOP = 0, VISO = 0, res=0;

  378.     int i;

  379. 

  380.     for(i=0; i<probe_packet->buf_size; i++){

  381.         temp_buffer = (temp_buffer<<8) + probe_packet->buf[i];

  382.         if ((temp_buffer & 0xffffff00) != 0x100)

  383.             continue;

  384. 

  385.         if (temp_buffer == VOP_START_CODE)                         VOP++;

  386.         else if (temp_buffer == VISUAL_OBJECT_START_CODE)          VISO++;

  387.         else if (temp_buffer < 0x120)                              VO++;

  388.         else if (temp_buffer < 0x130)                              VOL++;

  389.         else if (   !(0x1AF < temp_buffer && temp_buffer < 0x1B7)

  390.                  && !(0x1B9 < temp_buffer && temp_buffer < 0x1C4)) res++;

  391.     }

  392. 

  393.     if ( VOP >= VISO && VOP >= VOL && VO >= VOL && VOL > 0 && res==0)

  394.         return AVPROBE_SCORE_MAX/2;

  395.     return 0;

  396. }

  397. #endif

  398. 

  399. #if CONFIG_H264_DEMUXER

  400. static int h264_probe(AVProbeData *p)

  401. {

  402.     uint32_t code= -1;

  403.     int sps=0, pps=0, idr=0, res=0, sli=0;

  404.     int i;

  405. 

  406.     for(i=0; i<p->buf_size; i++){

  407.         code = (code<<8) + p->buf[i];

  408.         if ((code & 0xffffff00) == 0x100) {

  409.             int ref_idc= (code>>5)&3;

  410.             int type   = code & 0x1F;

  411.             static const int8_t ref_zero[32]={

  412.                 2, 0, 0, 0, 0,-1, 1,-1,

  413.                -1, 1, 1, 1, 1,-1, 2, 2,

  414.                 2, 2, 2, 0, 2, 2, 2, 2,

  415.                 2, 2, 2, 2, 2, 2, 2, 2

  416.             };

  417. 

  418.             if(code & 0x80) //forbidden bit

  419.                 return 0;

  420. 

  421.             if(ref_zero[type] == 1 && ref_idc)

  422.                 return 0;

  423.             if(ref_zero[type] ==-1 && !ref_idc)

  424.                 return 0;

  425.             if(ref_zero[type] == 2)

  426.                 res++;

  427. 

  428.             switch(type){

  429.             case     1:   sli++; break;

  430.             case     5:   idr++; break;

  431.             case     7:

  432.                 if(p->buf[i+2]&0x0F)

  433.                     return 0;

  434.                 sps++;

  435.                 break;

  436.             case     8:   pps++; break;

  437.             }

  438.         }

  439.     }

  440.     if(sps && pps && (idr||sli>3) && res<(sps+pps+idr))

  441.         return AVPROBE_SCORE_MAX/2+1; // +1 for .mpg

  442.     return 0;

  443. }

  444. #endif

  445. 

  446. #if CONFIG_H263_DEMUXER

  447. static int h263_probe(AVProbeData *p)

  448. {

  449.     int code;

  450.     const uint8_t *d;

  451. 

  452.     d = p->buf;

  453.     code = (d[0] << 14) | (d[1] << 6) | (d[2] >> 2);

  454.     if (code == 0x20) {

  455.         return 50;

  456.     }

  457.     return 0;

  458. }

  459. #endif

  460. 

  461. #if CONFIG_H261_DEMUXER

  462. static int h261_probe(AVProbeData *p)

  463. {

  464.     int code;

  465.     const uint8_t *d;

  466. 

  467.     d = p->buf;

  468.     code = (d[0] << 12) | (d[1] << 4) | (d[2] >> 4);

  469.     if (code == 0x10) {

  470.         return 50;

  471.     }

  472.     return 0;

  473. }

  474. #endif

  475. 

  476. #if CONFIG_DTS_DEMUXER

  477. #define DCA_MARKER_14B_BE 0x1FFFE800

  478. #define DCA_MARKER_14B_LE 0xFF1F00E8

  479. #define DCA_MARKER_RAW_BE 0x7FFE8001

  480. #define DCA_MARKER_RAW_LE 0xFE7F0180

  481. static int dts_probe(AVProbeData *p)

  482. {

  483.     const uint8_t *buf, *bufp;

  484.     uint32_t state = -1;

  485. 

  486.     buf = p->buf;

  487. 

  488.     for(; buf < (p->buf+p->buf_size)-2; buf+=2) {

  489.         bufp = buf;

  490.         state = (state << 16) | bytestream_get_be16(&bufp);

  491. 

  492.         /* regular bitstream */

  493.         if (state == DCA_MARKER_RAW_BE || state == DCA_MARKER_RAW_LE)

  494.             return AVPROBE_SCORE_MAX/2+1;

  495. 

  496.         /* 14 bits big-endian bitstream */

  497.         if (state == DCA_MARKER_14B_BE)

  498.             if ((bytestream_get_be16(&bufp) & 0xFFF0) == 0x07F0)

  499.                 return AVPROBE_SCORE_MAX/2+1;

  500. 

  501.         /* 14 bits little-endian bitstream */

  502.         if (state == DCA_MARKER_14B_LE)

  503.             if ((bytestream_get_be16(&bufp) & 0xF0FF) == 0xF007)

  504.                 return AVPROBE_SCORE_MAX/2+1;

  505.     }

  506. 

  507.     return 0;

  508. }

  509. #endif

  510. 

  511. #if CONFIG_DIRAC_DEMUXER

  512. static int dirac_probe(AVProbeData *p)

  513. {

  514.     if (AV_RL32(p->buf) == MKTAG('B', 'B', 'C', 'D'))

  515.         return AVPROBE_SCORE_MAX;

  516.     else

  517.         return 0;

  518. }

  519. #endif

  520. 

  521. #if CONFIG_DNXHD_DEMUXER

  522. static int dnxhd_probe(AVProbeData *p)

  523. {

  524.     static const uint8_t header[] = {0x00,0x00,0x02,0x80,0x01};

  525.     if (!memcmp(p->buf, header, 5))

  526.         return AVPROBE_SCORE_MAX;

  527.     else

  528.         return 0;

  529. }

  530. #endif

  531. 

  532. #if CONFIG_AC3_DEMUXER || CONFIG_EAC3_DEMUXER

  533. static int ac3_eac3_probe(AVProbeData *p, enum CodecID expected_codec_id)

  534. {

  535.     int max_frames, first_frames = 0, frames;

  536.     uint8_t *buf, *buf2, *end;

  537.     AC3HeaderInfo hdr;

  538.     GetBitContext gbc;

  539.     enum CodecID codec_id = CODEC_ID_AC3;

  540. 

  541.     max_frames = 0;

  542.     buf = p->buf;

  543.     end = buf + p->buf_size;

  544. 

  545.     for(; buf < end; buf++) {

  546.         buf2 = buf;

  547. 

  548.         for(frames = 0; buf2 < end; frames++) {

  549.             init_get_bits(&gbc, buf2, 54);

  550.             if(ff_ac3_parse_header(&gbc, &hdr) < 0)

  551.                 break;

  552.             if(buf2 + hdr.frame_size > end ||

  553.                av_crc(av_crc_get_table(AV_CRC_16_ANSI), 0, buf2 + 2, hdr.frame_size - 2))

  554.                 break;

  555.             if (hdr.bitstream_id > 10)

  556.                 codec_id = CODEC_ID_EAC3;

  557.             buf2 += hdr.frame_size;

  558.         }

  559.         max_frames = FFMAX(max_frames, frames);

  560.         if(buf == p->buf)

  561.             first_frames = frames;

  562.     }

  563.     if(codec_id != expected_codec_id) return 0;

  564.     if   (first_frames>=3) return AVPROBE_SCORE_MAX * 3 / 4;

  565.     else if(max_frames>=3) return AVPROBE_SCORE_MAX / 2;

  566.     else if(max_frames>=1) return 1;

  567.     else                   return 0;

  568. }

  569. #endif

  570. 

  571. #if CONFIG_AC3_DEMUXER

  572. static int ac3_probe(AVProbeData *p)

  573. {

  574.     return ac3_eac3_probe(p, CODEC_ID_AC3);

  575. }

  576. #endif

  577. 

  578. #if CONFIG_EAC3_DEMUXER

  579. static int eac3_probe(AVProbeData *p)

  580. {

  581.     return ac3_eac3_probe(p, CODEC_ID_EAC3);

  582. }

  583. #endif

  584. 

  585. #if CONFIG_AAC_DEMUXER

  586. static int adts_aac_probe(AVProbeData *p)

  587. {

  588.     int max_frames = 0, first_frames = 0;

  589.     int fsize, frames;

  590.     uint8_t *buf0 = p->buf;

  591.     uint8_t *buf2;

  592.     uint8_t *buf;

  593.     uint8_t *end = buf0 + p->buf_size - 7;

  594. 

  595.     if (ff_id3v2_match(buf0)) {

  596.         buf0 += ff_id3v2_tag_len(buf0);

  597.     }

  598.     buf = buf0;

  599. 

  600.     for(; buf < end; buf= buf2+1) {

  601.         buf2 = buf;

  602. 

  603.         for(frames = 0; buf2 < end; frames++) {

  604.             uint32_t header = AV_RB16(buf2);

  605.             if((header&0xFFF6) != 0xFFF0)

  606.                 break;

  607.             fsize = (AV_RB32(buf2+3)>>13) & 0x8FFF;

  608.             if(fsize < 7)

  609.                 break;

  610.             buf2 += fsize;

  611.         }

  612.         max_frames = FFMAX(max_frames, frames);

  613.         if(buf == buf0)

  614.             first_frames= frames;

  615.     }

  616.     if   (first_frames>=3) return AVPROBE_SCORE_MAX/2+1;

  617.     else if(max_frames>500)return AVPROBE_SCORE_MAX/2;

  618.     else if(max_frames>=3) return AVPROBE_SCORE_MAX/4;

  619.     else if(max_frames>=1) return 1;

  620.     else                   return 0;

  621. }

  622. #endif

  623. 

  624. /* Note: Do not forget to add new entries to the Makefile as well. */

  625. 

  626. #if CONFIG_AAC_DEMUXER

  627. AVInputFormat aac_demuxer = {

  628.     "aac",

  629.     NULL_IF_CONFIG_SMALL("raw ADTS AAC"),

  630.     0,

  631.     adts_aac_probe,

  632.     audio_read_header,

  633.     ff_raw_read_partial_packet,

  634.     .flags= AVFMT_GENERIC_INDEX,

  635.     .extensions = "aac",

  636.     .value = CODEC_ID_AAC,

  637. };

  638. #endif

  639. 

  640. #if CONFIG_AC3_DEMUXER

  641. AVInputFormat ac3_demuxer = {

  642.     "ac3",

  643.     NULL_IF_CONFIG_SMALL("raw AC-3"),

  644.     0,

  645.     ac3_probe,

  646.     audio_read_header,

  647.     ff_raw_read_partial_packet,

  648.     .flags= AVFMT_GENERIC_INDEX,

  649.     .extensions = "ac3",

  650.     .value = CODEC_ID_AC3,

  651. };

  652. #endif

  653. 

  654. #if CONFIG_AC3_MUXER

  655. AVOutputFormat ac3_muxer = {

  656.     "ac3",

  657.     NULL_IF_CONFIG_SMALL("raw AC-3"),

  658.     "audio/x-ac3",

  659.     "ac3",

  660.     0,

  661.     CODEC_ID_AC3,

  662.     CODEC_ID_NONE,

  663.     NULL,

  664.     raw_write_packet,

  665.     .flags= AVFMT_NOTIMESTAMPS,

  666. };

  667. #endif

  668. 

  669. #if CONFIG_DIRAC_DEMUXER

  670. AVInputFormat dirac_demuxer = {

  671.     "dirac",

  672.     NULL_IF_CONFIG_SMALL("raw Dirac"),

  673.     0,

  674.     dirac_probe,

  675.     video_read_header,

  676.     ff_raw_read_partial_packet,

  677.     .flags= AVFMT_GENERIC_INDEX,

  678.     .value = CODEC_ID_DIRAC,

  679. };

  680. #endif

  681. 

  682. #if CONFIG_DIRAC_MUXER

  683. AVOutputFormat dirac_muxer = {

  684.     "dirac",

  685.     NULL_IF_CONFIG_SMALL("raw Dirac"),

  686.     NULL,

  687.     "drc",

  688.     0,

  689.     CODEC_ID_NONE,

  690.     CODEC_ID_DIRAC,

  691.     NULL,

  692.     raw_write_packet,

  693.     .flags= AVFMT_NOTIMESTAMPS,

  694. };

  695. #endif

  696. 

  697. #if CONFIG_DNXHD_DEMUXER

  698. AVInputFormat dnxhd_demuxer = {

  699.     "dnxhd",

  700.     NULL_IF_CONFIG_SMALL("raw DNxHD (SMPTE VC-3)"),

  701.     0,

  702.     dnxhd_probe,

  703.     video_read_header,

  704.     ff_raw_read_partial_packet,

  705.     .flags= AVFMT_GENERIC_INDEX,

  706.     .value = CODEC_ID_DNXHD,

  707. };

  708. #endif

  709. 

  710. #if CONFIG_DNXHD_MUXER

  711. AVOutputFormat dnxhd_muxer = {

  712.     "dnxhd",

  713.     NULL_IF_CONFIG_SMALL("raw DNxHD (SMPTE VC-3)"),

  714.     NULL,

  715.     "dnxhd",

  716.     0,

  717.     CODEC_ID_NONE,

  718.     CODEC_ID_DNXHD,

  719.     NULL,

  720.     raw_write_packet,

  721.     .flags= AVFMT_NOTIMESTAMPS,

  722. };

  723. #endif

  724. 

  725. #if CONFIG_DTS_DEMUXER

  726. AVInputFormat dts_demuxer = {

  727.     "dts",

  728.     NULL_IF_CONFIG_SMALL("raw DTS"),

  729.     0,

  730.     dts_probe,

  731.     audio_read_header,

  732.     ff_raw_read_partial_packet,

  733.     .flags= AVFMT_GENERIC_INDEX,

  734.     .extensions = "dts",

  735.     .value = CODEC_ID_DTS,

  736. };

  737. #endif

  738. 

  739. #if CONFIG_DTS_MUXER

  740. AVOutputFormat dts_muxer = {

  741.     "dts",

  742.     NULL_IF_CONFIG_SMALL("raw DTS"),

  743.     "audio/x-dca",

  744.     "dts",

  745.     0,

  746.     CODEC_ID_DTS,

  747.     CODEC_ID_NONE,

  748.     NULL,

  749.     raw_write_packet,

  750.     .flags= AVFMT_NOTIMESTAMPS,

  751. };

  752. #endif

  753. 

  754. #if CONFIG_EAC3_DEMUXER

  755. AVInputFormat eac3_demuxer = {

  756.     "eac3",

  757.     NULL_IF_CONFIG_SMALL("raw E-AC-3"),

  758.     0,

  759.     eac3_probe,

  760.     audio_read_header,

  761.     ff_raw_read_partial_packet,

  762.     .flags= AVFMT_GENERIC_INDEX,

  763.     .extensions = "eac3",

  764.     .value = CODEC_ID_EAC3,

  765. };

  766. #endif

  767. 

  768. #if CONFIG_EAC3_MUXER

  769. AVOutputFormat eac3_muxer = {

  770.     "eac3",

  771.     NULL_IF_CONFIG_SMALL("raw E-AC-3"),

  772.     "audio/x-eac3",

  773.     "eac3",

  774.     0,

  775.     CODEC_ID_EAC3,

  776.     CODEC_ID_NONE,

  777.     NULL,

  778.     raw_write_packet,

  779.     .flags= AVFMT_NOTIMESTAMPS,

  780. };

  781. #endif

  782. 

  783. #if CONFIG_GSM_DEMUXER

  784. AVInputFormat gsm_demuxer = {

  785.     "gsm",

  786.     NULL_IF_CONFIG_SMALL("raw GSM"),

  787.     0,

  788.     NULL,

  789.     audio_read_header,

  790.     ff_raw_read_partial_packet,

  791.     .flags= AVFMT_GENERIC_INDEX,

  792.     .extensions = "gsm",

  793.     .value = CODEC_ID_GSM,

  794. };

  795. #endif

  796. 

  797. #if CONFIG_H261_DEMUXER

  798. AVInputFormat h261_demuxer = {

  799.     "h261",

  800.     NULL_IF_CONFIG_SMALL("raw H.261"),

  801.     0,

  802.     h261_probe,

  803.     video_read_header,

  804.     ff_raw_read_partial_packet,

  805.     .flags= AVFMT_GENERIC_INDEX,

  806.     .extensions = "h261",

  807.     .value = CODEC_ID_H261,

  808. };

  809. #endif

  810. 

  811. #if CONFIG_H261_MUXER

  812. AVOutputFormat h261_muxer = {

  813.     "h261",

  814.     NULL_IF_CONFIG_SMALL("raw H.261"),

  815.     "video/x-h261",

  816.     "h261",

  817.     0,

  818.     CODEC_ID_NONE,

  819.     CODEC_ID_H261,

  820.     NULL,

  821.     raw_write_packet,

  822.     .flags= AVFMT_NOTIMESTAMPS,

  823. };

  824. #endif

  825. 

  826. #if CONFIG_H263_DEMUXER

  827. AVInputFormat h263_demuxer = {

  828.     "h263",

  829.     NULL_IF_CONFIG_SMALL("raw H.263"),

  830.     0,

  831.     h263_probe,

  832.     video_read_header,

  833.     ff_raw_read_partial_packet,

  834.     .flags= AVFMT_GENERIC_INDEX,

  835. //    .extensions = "h263", //FIXME remove after writing mpeg4_probe

  836.     .value = CODEC_ID_H263,

  837. };

  838. #endif

  839. 

  840. #if CONFIG_H263_MUXER

  841. AVOutputFormat h263_muxer = {

  842.     "h263",

  843.     NULL_IF_CONFIG_SMALL("raw H.263"),

  844.     "video/x-h263",

  845.     "h263",

  846.     0,

  847.     CODEC_ID_NONE,

  848.     CODEC_ID_H263,

  849.     NULL,

  850.     raw_write_packet,

  851.     .flags= AVFMT_NOTIMESTAMPS,

  852. };

  853. #endif

  854. 

  855. #if CONFIG_H264_DEMUXER

  856. AVInputFormat h264_demuxer = {

  857.     "h264",

  858.     NULL_IF_CONFIG_SMALL("raw H.264 video format"),

  859.     0,

  860.     h264_probe,

  861.     video_read_header,

  862.     ff_raw_read_partial_packet,

  863.     .flags= AVFMT_GENERIC_INDEX,

  864.     .extensions = "h26l,h264,264", //FIXME remove after writing mpeg4_probe

  865.     .value = CODEC_ID_H264,

  866. };

  867. #endif

  868. 

  869. #if CONFIG_H264_MUXER

  870. AVOutputFormat h264_muxer = {

  871.     "h264",

  872.     NULL_IF_CONFIG_SMALL("raw H.264 video format"),

  873.     NULL,

  874.     "h264",

  875.     0,

  876.     CODEC_ID_NONE,

  877.     CODEC_ID_H264,

  878.     NULL,

  879.     raw_write_packet,

  880.     .flags= AVFMT_NOTIMESTAMPS,

  881. };

  882. #endif

  883. 

  884. #if CONFIG_INGENIENT_DEMUXER

  885. AVInputFormat ingenient_demuxer = {

  886.     "ingenient",

  887.     NULL_IF_CONFIG_SMALL("raw Ingenient MJPEG"),

  888.     0,

  889.     NULL,

  890.     video_read_header,

  891.     ingenient_read_packet,

  892.     .flags= AVFMT_GENERIC_INDEX,

  893.     .extensions = "cgi", // FIXME

  894.     .value = CODEC_ID_MJPEG,

  895. };

  896. #endif

  897. 

  898. #if CONFIG_M4V_DEMUXER

  899. AVInputFormat m4v_demuxer = {

  900.     "m4v",

  901.     NULL_IF_CONFIG_SMALL("raw MPEG-4 video format"),

  902.     0,

  903.     mpeg4video_probe, /** probing for MPEG-4 data */

  904.     video_read_header,

  905.     ff_raw_read_partial_packet,

  906.     .flags= AVFMT_GENERIC_INDEX,

  907.     .extensions = "m4v",

  908.     .value = CODEC_ID_MPEG4,

  909. };

  910. #endif

  911. 

  912. #if CONFIG_M4V_MUXER

  913. AVOutputFormat m4v_muxer = {

  914.     "m4v",

  915.     NULL_IF_CONFIG_SMALL("raw MPEG-4 video format"),

  916.     NULL,

  917.     "m4v",

  918.     0,

  919.     CODEC_ID_NONE,

  920.     CODEC_ID_MPEG4,

  921.     NULL,

  922.     raw_write_packet,

  923.     .flags= AVFMT_NOTIMESTAMPS,

  924. };

  925. #endif

  926. 

  927. #if CONFIG_MJPEG_DEMUXER

  928. AVInputFormat mjpeg_demuxer = {

  929.     "mjpeg",

  930.     NULL_IF_CONFIG_SMALL("raw MJPEG video"),

  931.     0,

  932.     NULL,

  933.     video_read_header,

  934.     ff_raw_read_partial_packet,

  935.     .flags= AVFMT_GENERIC_INDEX,

  936.     .extensions = "mjpg,mjpeg",

  937.     .value = CODEC_ID_MJPEG,

  938. };

  939. #endif

  940. 

  941. #if CONFIG_MJPEG_MUXER

  942. AVOutputFormat mjpeg_muxer = {

  943.     "mjpeg",

  944.     NULL_IF_CONFIG_SMALL("raw MJPEG video"),

  945.     "video/x-mjpeg",

  946.     "mjpg,mjpeg",

  947.     0,

  948.     CODEC_ID_NONE,

  949.     CODEC_ID_MJPEG,

  950.     NULL,

  951.     raw_write_packet,

  952.     .flags= AVFMT_NOTIMESTAMPS,

  953. };

  954. #endif

  955. 

  956. #if CONFIG_MLP_DEMUXER

  957. AVInputFormat mlp_demuxer = {

  958.     "mlp",

  959.     NULL_IF_CONFIG_SMALL("raw MLP"),

  960.     0,

  961.     NULL,

  962.     audio_read_header,

  963.     ff_raw_read_partial_packet,

  964.     .flags= AVFMT_GENERIC_INDEX,

  965.     .extensions = "mlp",

  966.     .value = CODEC_ID_MLP,

  967. };

  968. #endif

  969. 

  970. #if CONFIG_MPEG1VIDEO_MUXER

  971. AVOutputFormat mpeg1video_muxer = {

  972.     "mpeg1video",

  973.     NULL_IF_CONFIG_SMALL("raw MPEG-1 video"),

  974.     "video/x-mpeg",

  975.     "mpg,mpeg,m1v",

  976.     0,

  977.     CODEC_ID_NONE,

  978.     CODEC_ID_MPEG1VIDEO,

  979.     NULL,

  980.     raw_write_packet,

  981.     .flags= AVFMT_NOTIMESTAMPS,

  982. };

  983. #endif

  984. 

  985. #if CONFIG_MPEG2VIDEO_MUXER

  986. AVOutputFormat mpeg2video_muxer = {

  987.     "mpeg2video",

  988.     NULL_IF_CONFIG_SMALL("raw MPEG-2 video"),

  989.     NULL,

  990.     "m2v",

  991.     0,

  992.     CODEC_ID_NONE,

  993.     CODEC_ID_MPEG2VIDEO,

  994.     NULL,

  995.     raw_write_packet,

  996.     .flags= AVFMT_NOTIMESTAMPS,

  997. };

  998. #endif

  999. 

  1000. #if CONFIG_MPEGVIDEO_DEMUXER

  1001. AVInputFormat mpegvideo_demuxer = {

  1002.     "mpegvideo",

  1003.     NULL_IF_CONFIG_SMALL("raw MPEG video"),

  1004.     0,

  1005.     mpegvideo_probe,

  1006.     video_read_header,

  1007.     ff_raw_read_partial_packet,

  1008.     .flags= AVFMT_GENERIC_INDEX,

  1009.     .value = CODEC_ID_MPEG1VIDEO,

  1010. };

  1011. #endif

  1012. 

  1013. #if CONFIG_CAVSVIDEO_DEMUXER

  1014. AVInputFormat cavsvideo_demuxer = {

  1015.     "cavsvideo",

  1016.     NULL_IF_CONFIG_SMALL("raw Chinese AVS video"),

  1017.     0,

  1018.     cavsvideo_probe,

  1019.     video_read_header,

  1020.     ff_raw_read_partial_packet,

  1021.     .flags= AVFMT_GENERIC_INDEX,

  1022.     .value = CODEC_ID_CAVS,

  1023. };

  1024. #endif

  1025. 

  1026. #if CONFIG_NULL_MUXER

  1027. AVOutputFormat null_muxer = {

  1028.     "null",

  1029.     NULL_IF_CONFIG_SMALL("raw null video format"),

  1030.     NULL,

  1031.     NULL,

  1032.     0,

  1033. #ifdef WORDS_BIGENDIAN

  1034.     CODEC_ID_PCM_S16BE,

  1035. #else

  1036.     CODEC_ID_PCM_S16LE,

  1037. #endif

  1038.     CODEC_ID_RAWVIDEO,

  1039.     NULL,

  1040.     null_write_packet,

  1041.     .flags = AVFMT_NOFILE | AVFMT_RAWPICTURE | AVFMT_NOTIMESTAMPS,

  1042. };

  1043. #endif

  1044. 

  1045. #if CONFIG_RAWVIDEO_DEMUXER

  1046. AVInputFormat rawvideo_demuxer = {

  1047.     "rawvideo",

  1048.     NULL_IF_CONFIG_SMALL("raw video format"),

  1049.     0,

  1050.     NULL,

  1051.     raw_read_header,

  1052.     rawvideo_read_packet,

  1053.     .flags= AVFMT_GENERIC_INDEX,

  1054.     .extensions = "yuv,cif,qcif,rgb",

  1055.     .value = CODEC_ID_RAWVIDEO,

  1056. };

  1057. #endif

  1058. 

  1059. #if CONFIG_RAWVIDEO_MUXER

  1060. AVOutputFormat rawvideo_muxer = {

  1061.     "rawvideo",

  1062.     NULL_IF_CONFIG_SMALL("raw video format"),

  1063.     NULL,

  1064.     "yuv,rgb",

  1065.     0,

  1066.     CODEC_ID_NONE,

  1067.     CODEC_ID_RAWVIDEO,

  1068.     NULL,

  1069.     raw_write_packet,

  1070.     .flags= AVFMT_NOTIMESTAMPS,

  1071. };

  1072. #endif

  1073. 

  1074. #if CONFIG_ROQ_MUXER

  1075. AVOutputFormat roq_muxer =

  1076. {

  1077.     "RoQ",

  1078.     NULL_IF_CONFIG_SMALL("raw id RoQ format"),

  1079.     NULL,

  1080.     "roq",

  1081.     0,

  1082.     CODEC_ID_ROQ_DPCM,

  1083.     CODEC_ID_ROQ,

  1084.     roq_write_header,

  1085.     raw_write_packet,

  1086. };

  1087. #endif

  1088. 

  1089. #if CONFIG_SHORTEN_DEMUXER

  1090. AVInputFormat shorten_demuxer = {

  1091.     "shn",

  1092.     NULL_IF_CONFIG_SMALL("raw Shorten"),

  1093.     0,

  1094.     NULL,

  1095.     audio_read_header,

  1096.     ff_raw_read_partial_packet,

  1097.     .flags= AVFMT_GENERIC_INDEX,

  1098.     .extensions = "shn",

  1099.     .value = CODEC_ID_SHORTEN,

  1100. };

  1101. #endif

  1102. 

  1103. #if CONFIG_VC1_DEMUXER

  1104. AVInputFormat vc1_demuxer = {

  1105.     "vc1",

  1106.     NULL_IF_CONFIG_SMALL("raw VC-1"),

  1107.     0,

  1108.     NULL /* vc1_probe */,

  1109.     video_read_header,

  1110.     ff_raw_read_partial_packet,

  1111.     .extensions = "vc1",

  1112.     .value = CODEC_ID_VC1,

  1113. };

  1114. #endif

  1115. 

  1116. /* PCM formats */

  1117. 

  1118. #define PCMINPUTDEF(name, long_name, ext, codec) \

  1119. AVInputFormat pcm_ ## name ## _demuxer = {\

  1120.     #name,\

  1121.     NULL_IF_CONFIG_SMALL(long_name),\

  1122.     0,\

  1123.     NULL,\

  1124.     raw_read_header,\

  1125.     raw_read_packet,\

  1126.     NULL,\

  1127.     pcm_read_seek,\

  1128.     .flags= AVFMT_GENERIC_INDEX,\

  1129.     .extensions = ext,\

  1130.     .value = codec,\

  1131. };

  1132. 

  1133. #define PCMOUTPUTDEF(name, long_name, ext, codec) \

  1134. AVOutputFormat pcm_ ## name ## _muxer = {\

  1135.     #name,\

  1136.     NULL_IF_CONFIG_SMALL(long_name),\

  1137.     NULL,\

  1138.     ext,\

  1139.     0,\

  1140.     codec,\

  1141.     CODEC_ID_NONE,\

  1142.     NULL,\

  1143.     raw_write_packet,\

  1144.     .flags= AVFMT_NOTIMESTAMPS,\

  1145. };

  1146. 

  1147. 

  1148. #if  !CONFIG_MUXERS && CONFIG_DEMUXERS

  1149. #define PCMDEF(name, long_name, ext, codec) \

  1150.         PCMINPUTDEF(name, long_name, ext, codec)

  1151. #elif CONFIG_MUXERS && !CONFIG_DEMUXERS

  1152. #define PCMDEF(name, long_name, ext, codec) \

  1153.         PCMOUTPUTDEF(name, long_name, ext, codec)

  1154. #elif CONFIG_MUXERS && CONFIG_DEMUXERS

  1155. #define PCMDEF(name, long_name, ext, codec) \

  1156.         PCMINPUTDEF(name, long_name, ext, codec)\

  1157.         PCMOUTPUTDEF(name, long_name, ext, codec)

  1158. #else

  1159. #define PCMDEF(name, long_name, ext, codec)

  1160. #endif

  1161. 

  1162. #ifdef WORDS_BIGENDIAN

  1163. #define BE_DEF(s) s

  1164. #define LE_DEF(s) NULL

  1165. #else

  1166. #define BE_DEF(s) NULL

  1167. #define LE_DEF(s) s

  1168. #endif

  1169. 

  1170. PCMDEF(f64be, "PCM 64 bit floating-point big-endian format",

  1171.        NULL, CODEC_ID_PCM_F64BE)

  1172. 

  1173. PCMDEF(f64le, "PCM 64 bit floating-point little-endian format",

  1174.        NULL, CODEC_ID_PCM_F64LE)

  1175. 

  1176. PCMDEF(f32be, "PCM 32 bit floating-point big-endian format",

  1177.        NULL, CODEC_ID_PCM_F32BE)

  1178. 

  1179. PCMDEF(f32le, "PCM 32 bit floating-point little-endian format",

  1180.        NULL, CODEC_ID_PCM_F32LE)

  1181. 

  1182. PCMDEF(s32be, "PCM signed 32 bit big-endian format",

  1183.        NULL, CODEC_ID_PCM_S32BE)

  1184. 

  1185. PCMDEF(s32le, "PCM signed 32 bit little-endian format",

  1186.        NULL, CODEC_ID_PCM_S32LE)

  1187. 

  1188. PCMDEF(s24be, "PCM signed 24 bit big-endian format",

  1189.        NULL, CODEC_ID_PCM_S24BE)

  1190. 

  1191. PCMDEF(s24le, "PCM signed 24 bit little-endian format",

  1192.        NULL, CODEC_ID_PCM_S24LE)

  1193. 

  1194. PCMDEF(s16be, "PCM signed 16 bit big-endian format",

  1195.        BE_DEF("sw"), CODEC_ID_PCM_S16BE)

  1196. 

  1197. PCMDEF(s16le, "PCM signed 16 bit little-endian format",

  1198.        LE_DEF("sw"), CODEC_ID_PCM_S16LE)

  1199. 

  1200. PCMDEF(s8, "PCM signed 8 bit format",

  1201.        "sb", CODEC_ID_PCM_S8)

  1202. 

  1203. PCMDEF(u32be, "PCM unsigned 32 bit big-endian format",

  1204.        NULL, CODEC_ID_PCM_U32BE)

  1205. 

  1206. PCMDEF(u32le, "PCM unsigned 32 bit little-endian format",

  1207.        NULL, CODEC_ID_PCM_U32LE)

  1208. 

  1209. PCMDEF(u24be, "PCM unsigned 24 bit big-endian format",

  1210.        NULL, CODEC_ID_PCM_U24BE)

  1211. 

  1212. PCMDEF(u24le, "PCM unsigned 24 bit little-endian format",

  1213.        NULL, CODEC_ID_PCM_U24LE)

  1214. 

  1215. PCMDEF(u16be, "PCM unsigned 16 bit big-endian format",

  1216.        BE_DEF("uw"), CODEC_ID_PCM_U16BE)

  1217. 

  1218. PCMDEF(u16le, "PCM unsigned 16 bit little-endian format",

  1219.        LE_DEF("uw"), CODEC_ID_PCM_U16LE)

  1220. 

  1221. PCMDEF(u8, "PCM unsigned 8 bit format",

  1222.        "ub", CODEC_ID_PCM_U8)

  1223. 

  1224. PCMDEF(alaw, "PCM A-law format",

  1225.        "al", CODEC_ID_PCM_ALAW)

  1226. 

  1227. PCMDEF(mulaw, "PCM mu-law format",

  1228.        "ul", CODEC_ID_PCM_MULAW)