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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/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

  35. static 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

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

  50. {

  51.     return 0;

  52. }

  53. #endif

  54. 

  55. #if CONFIG_MUXERS

  56. static 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 */

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

  67. {

  68.     AVStream *st;

  69.     int id;

  70. 

  71.     st = av_new_stream(s, 0);

  72.     if (!st)

  73.         return AVERROR(ENOMEM);

  74. 

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

  76.         if (id == CODEC_ID_RAWVIDEO) {

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

  78.         } else {

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

  80.         }

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

  82. 

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

  84.         case CODEC_TYPE_AUDIO:

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

  86.             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 CODEC_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. 

  113. static 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 AVERROR(EIO);

  125.     }

  126. 

  127.     bps= av_get_bits_per_sample(s->streams[0]->codec->codec_id);

  128.     assert(bps); // if false there IS a bug elsewhere (NOT in this function)

  129.     pkt->dts=

  130.     pkt->pts= pkt->pos*8 / (bps * s->streams[0]->codec->channels);

  131. 

  132.     return ret;

  133. }

  134. 

  135. int ff_raw_read_partial_packet(AVFormatContext *s, AVPacket *pkt)

  136. {

  137.     int ret, size;

  138. 

  139.     size = RAW_PACKET_SIZE;

  140. 

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

  142.         return AVERROR(ENOMEM);

  143. 

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

  145.     pkt->stream_index = 0;

  146.     ret = get_partial_buffer(s->pb, pkt->data, size);

  147.     if (ret <= 0) {

  148.         av_free_packet(pkt);

  149.         return AVERROR(EIO);

  150.     }

  151.     pkt->size = ret;

  152.     return ret;

  153. }

  154. #endif

  155. 

  156. #if CONFIG_RAWVIDEO_DEMUXER

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

  158. {

  159.     int packet_size, ret, width, height;

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

  161. 

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

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

  164. 

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

  166.     if (packet_size < 0)

  167.         return -1;

  168. 

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

  170.     pkt->pts=

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

  172. 

  173.     pkt->stream_index = 0;

  174.     if (ret != packet_size) {

  175.         return AVERROR(EIO);

  176.     } else {

  177.         return 0;

  178.     }

  179. }

  180. #endif

  181. 

  182. #if CONFIG_INGENIENT_DEMUXER

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

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

  185. {

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

  187. 

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

  189.         return AVERROR(EIO); // FIXME

  190. 

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

  192. 

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

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

  195. 

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

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

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

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

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

  201. 

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

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

  204. 

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

  206.         return AVERROR(ENOMEM);

  207. 

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

  209.     pkt->stream_index = 0;

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

  211.     if (ret <= 0) {

  212.         av_free_packet(pkt);

  213.         return AVERROR(EIO);

  214.     }

  215.     pkt->size = ret;

  216.     return ret;

  217. }

  218. #endif

  219. 

  220. #if CONFIG_DEMUXERS

  221. int pcm_read_seek(AVFormatContext *s,

  222.                   int stream_index, int64_t timestamp, int flags)

  223. {

  224.     AVStream *st;

  225.     int block_align, byte_rate, ret;

  226.     int64_t pos;

  227. 

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

  229. 

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

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

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

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

  234. 

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

  236.         return -1;

  237.     if (timestamp < 0) timestamp = 0;

  238. 

  239.     /* compute the position by aligning it to block_align */

  240.     pos = av_rescale_rnd(timestamp * byte_rate,

  241.                          st->time_base.num,

  242.                          st->time_base.den * (int64_t)block_align,

  243.                          (flags & AVSEEK_FLAG_BACKWARD) ? AV_ROUND_DOWN : AV_ROUND_UP);

  244.     pos *= block_align;

  245. 

  246.     /* recompute exact position */

  247.     st->cur_dts = av_rescale(pos, st->time_base.den, byte_rate * (int64_t)st->time_base.num);

  248.     if ((ret = url_fseek(s->pb, pos + s->data_offset, SEEK_SET)) < 0)

  249.         return ret;

  250.     return 0;

  251. }

  252. 

  253. static int audio_read_header(AVFormatContext *s,

  254.                              AVFormatParameters *ap)

  255. {

  256.     AVStream *st = av_new_stream(s, 0);

  257.     if (!st)

  258.         return AVERROR(ENOMEM);

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

  260.     st->codec->codec_id = s->iformat->value;

  261.     st->need_parsing = AVSTREAM_PARSE_FULL;

  262.     /* the parameters will be extracted from the compressed bitstream */

  263. 

  264.     return 0;

  265. }

  266. 

  267. /* MPEG-1/H.263 input */

  268. static int video_read_header(AVFormatContext *s,

  269.                              AVFormatParameters *ap)

  270. {

  271.     AVStream *st;

  272. 

  273.     st = av_new_stream(s, 0);

  274.     if (!st)

  275.         return AVERROR(ENOMEM);

  276. 

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

  278.     st->codec->codec_id = s->iformat->value;

  279.     st->need_parsing = AVSTREAM_PARSE_FULL;

  280. 

  281.     /* for MJPEG, specify frame rate */

  282.     /* for MPEG-4 specify it, too (most MPEG-4 streams do not have the fixed_vop_rate set ...)*/

  283.     if (ap->time_base.num) {

  284.         st->codec->time_base= ap->time_base;

  285.     } else if ( st->codec->codec_id == CODEC_ID_MJPEG ||

  286.                 st->codec->codec_id == CODEC_ID_MPEG4 ||

  287.                 st->codec->codec_id == CODEC_ID_DIRAC ||

  288.                 st->codec->codec_id == CODEC_ID_H264) {

  289.         st->codec->time_base= (AVRational){1,25};

  290.     }

  291.     av_set_pts_info(st, 64, 1, 1200000);

  292. 

  293.     return 0;

  294. }

  295. #endif

  296. 

  297. #if CONFIG_MPEGVIDEO_DEMUXER

  298. #define SEQ_START_CODE          0x000001b3

  299. #define GOP_START_CODE          0x000001b8

  300. #define PICTURE_START_CODE      0x00000100

  301. #define SLICE_START_CODE        0x00000101

  302. #define PACK_START_CODE         0x000001ba

  303. #define VIDEO_ID                0x000001e0

  304. #define AUDIO_ID                0x000001c0

  305. 

  306. static int mpegvideo_probe(AVProbeData *p)

  307. {

  308.     uint32_t code= -1;

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

  310.     int i;

  311. 

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

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

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

  315.             switch(code){

  316.             case     SEQ_START_CODE:   seq++; break;

  317.             case PICTURE_START_CODE:   pic++; break;

  318.             case   SLICE_START_CODE: slice++; break;

  319.             case    PACK_START_CODE: pspack++; break;

  320.             }

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

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

  323.         }

  324.     }

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

  326.         return pic>1 ? AVPROBE_SCORE_MAX/2+1 : AVPROBE_SCORE_MAX/4; // +1 for .mpg

  327.     return 0;

  328. }

  329. #endif

  330. 

  331. #if CONFIG_CAVSVIDEO_DEMUXER

  332. #define CAVS_SEQ_START_CODE       0x000001b0

  333. #define CAVS_PIC_I_START_CODE     0x000001b3

  334. #define CAVS_UNDEF_START_CODE     0x000001b4

  335. #define CAVS_PIC_PB_START_CODE    0x000001b6

  336. #define CAVS_VIDEO_EDIT_CODE      0x000001b7

  337. #define CAVS_PROFILE_JIZHUN       0x20

  338. 

  339. static int cavsvideo_probe(AVProbeData *p)

  340. {

  341.     uint32_t code= -1;

  342.     int pic=0, seq=0, slice_pos = 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.             if(code < CAVS_SEQ_START_CODE) {

  349.                 /* slices have to be consecutive */

  350.                 if(code < slice_pos)

  351.                     return 0;

  352.                 slice_pos = code;

  353.             } else {

  354.                 slice_pos = 0;

  355.             }

  356.             if (code == CAVS_SEQ_START_CODE) {

  357.                 seq++;

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

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

  360.                     return 0;

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

  362.                        (code == CAVS_PIC_PB_START_CODE)) {

  363.                 pic++;

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

  365.                        (code >  CAVS_VIDEO_EDIT_CODE)) {

  366.                 return 0;

  367.             }

  368.         }

  369.     }

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

  371.         return AVPROBE_SCORE_MAX/2;

  372.     return 0;

  373. }

  374. #endif

  375. 

  376. #if CONFIG_M4V_DEMUXER

  377. #define VISUAL_OBJECT_START_CODE       0x000001b5

  378. #define VOP_START_CODE                 0x000001b6

  379. 

  380. static int mpeg4video_probe(AVProbeData *probe_packet)

  381. {

  382.     uint32_t temp_buffer= -1;

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

  384.     int i;

  385. 

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

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

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

  389.             continue;

  390. 

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

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

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

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

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

  396.                  && !(0x1B9 < temp_buffer && temp_buffer < 0x1C4)) res++;

  397.     }

  398. 

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

  400.         return AVPROBE_SCORE_MAX/2;

  401.     return 0;

  402. }

  403. #endif

  404. 

  405. #if CONFIG_H264_DEMUXER

  406. static int h264_probe(AVProbeData *p)

  407. {

  408.     uint32_t code= -1;

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

  410.     int i;

  411. 

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

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

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

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

  416.             int type   = code & 0x1F;

  417.             static const int8_t ref_zero[32]={

  418.                 2, 0, 0, 0, 0,-1, 1,-1,

  419.                -1, 1, 1, 1, 1,-1, 2, 2,

  420.                 2, 2, 2, 0, 2, 2, 2, 2,

  421.                 2, 2, 2, 2, 2, 2, 2, 2

  422.             };

  423. 

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

  425.                 return 0;

  426. 

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

  428.                 return 0;

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

  430.                 return 0;

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

  432.                 res++;

  433. 

  434.             switch(type){

  435.             case     1:   sli++; break;

  436.             case     5:   idr++; break;

  437.             case     7:

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

  439.                     return 0;

  440.                 sps++;

  441.                 break;

  442.             case     8:   pps++; break;

  443.             }

  444.         }

  445.     }

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

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

  448.     return 0;

  449. }

  450. #endif

  451. 

  452. #if CONFIG_H263_DEMUXER

  453. static int h263_probe(AVProbeData *p)

  454. {

  455.     uint64_t code= -1;

  456.     int i;

  457.     int valid_psc=0;

  458.     int invalid_psc=0;

  459.     int res_change=0;

  460.     int src_fmt, last_src_fmt=-1;

  461. 

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

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

  464.         if ((code & 0xfffffc0000) == 0x800000) {

  465.             src_fmt= (code>>2)&3;

  466.             if(   src_fmt != last_src_fmt

  467.                && last_src_fmt>0 && last_src_fmt<6

  468.                && src_fmt<6)

  469.                 res_change++;

  470. 

  471.             if((code&0x300)==0x200 && src_fmt){

  472.                 valid_psc++;

  473.             }else

  474.                 invalid_psc++;

  475.             last_src_fmt= src_fmt;

  476.         }

  477.     }

  478.     if(valid_psc > 2*invalid_psc + 2*res_change + 2){

  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

  487. static 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.         code = (code<<1) + get_bits1(&gb);

  501.         if ((code & 0xffff0000) == 0x10000) {

  502.             int gn= (code>>12)&0xf;

  503.             if(!gn)

  504.                 src_fmt= code&8;

  505.             if(gn != next_gn) invalid_psc++;

  506.             else              valid_psc++;

  507. 

  508.             if(src_fmt){ // CIF

  509.                 next_gn= (gn+1     )%13;

  510.             }else{       //QCIF

  511.                 next_gn= (gn+1+!!gn)% 7;

  512.             }

  513.         }

  514.     }

  515.     if(valid_psc > 2*invalid_psc + 6){

  516.         return 50;

  517.     }else if(valid_psc > 2*invalid_psc + 2)

  518.         return 25;

  519.     return 0;

  520. }

  521. #endif

  522. 

  523. #if CONFIG_DTS_DEMUXER

  524. #define DCA_MARKER_14B_BE 0x1FFFE800

  525. #define DCA_MARKER_14B_LE 0xFF1F00E8

  526. #define DCA_MARKER_RAW_BE 0x7FFE8001

  527. #define DCA_MARKER_RAW_LE 0xFE7F0180

  528. static int dts_probe(AVProbeData *p)

  529. {

  530.     const uint8_t *buf, *bufp;

  531.     uint32_t state = -1;

  532.     int markers[3] = {0};

  533.     int sum, max;

  534. 

  535.     buf = p->buf;

  536. 

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

  538.         bufp = buf;

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

  540. 

  541.         /* regular bitstream */

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

  543.             markers[0]++;

  544. 

  545.         /* 14 bits big-endian bitstream */

  546.         if (state == DCA_MARKER_14B_BE)

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

  548.                 markers[1]++;

  549. 

  550.         /* 14 bits little-endian bitstream */

  551.         if (state == DCA_MARKER_14B_LE)

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

  553.                 markers[2]++;

  554.     }

  555.     sum = markers[0] + markers[1] + markers[2];

  556.     max = markers[1] > markers[0];

  557.     max = markers[2] > markers[max] ? 2 : max;

  558.     if (markers[max] > 3 && p->buf_size / markers[max] < 32*1024 &&

  559.         markers[max] * 4 > sum * 3)

  560.         return AVPROBE_SCORE_MAX/2+1;

  561. 

  562.     return 0;

  563. }

  564. #endif

  565. 

  566. #if CONFIG_DIRAC_DEMUXER

  567. static int dirac_probe(AVProbeData *p)

  568. {

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

  570.         return AVPROBE_SCORE_MAX;

  571.     else

  572.         return 0;

  573. }

  574. #endif

  575. 

  576. #if CONFIG_DNXHD_DEMUXER

  577. static int dnxhd_probe(AVProbeData *p)

  578. {

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

  580.     int w, h, compression_id;

  581.     if (p->buf_size < 0x2c)

  582.         return 0;

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

  584.         return 0;

  585.     h = AV_RB16(p->buf + 0x18);

  586.     w = AV_RB16(p->buf + 0x1a);

  587.     if (!w || !h)

  588.         return 0;

  589.     compression_id = AV_RB32(p->buf + 0x28);

  590.     if (compression_id < 1237 || compression_id > 1253)

  591.         return 0;

  592.     return AVPROBE_SCORE_MAX;

  593. }

  594. #endif

  595. 

  596. #if CONFIG_AC3_DEMUXER || CONFIG_EAC3_DEMUXER

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

  598. {

  599.     int max_frames, first_frames = 0, frames;

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

  601.     AC3HeaderInfo hdr;

  602.     GetBitContext gbc;

  603.     enum CodecID codec_id = CODEC_ID_AC3;

  604. 

  605.     max_frames = 0;

  606.     buf = p->buf;

  607.     end = buf + p->buf_size;

  608. 

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

  610.         buf2 = buf;

  611. 

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

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

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

  615.                 break;

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

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

  618.                 break;

  619.             if (hdr.bitstream_id > 10)

  620.                 codec_id = CODEC_ID_EAC3;

  621.             buf2 += hdr.frame_size;

  622.         }

  623.         max_frames = FFMAX(max_frames, frames);

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

  625.             first_frames = frames;

  626.     }

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

  628.     // keep this in sync with mp3 probe, both need to avoid

  629.     // issues with MPEG-files!

  630.     if   (first_frames>=4) return AVPROBE_SCORE_MAX/2+1;

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

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

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

  634.     else                   return 0;

  635. }

  636. #endif

  637. 

  638. #if CONFIG_AC3_DEMUXER

  639. static int ac3_probe(AVProbeData *p)

  640. {

  641.     return ac3_eac3_probe(p, CODEC_ID_AC3);

  642. }

  643. #endif

  644. 

  645. #if CONFIG_EAC3_DEMUXER

  646. static int eac3_probe(AVProbeData *p)

  647. {

  648.     return ac3_eac3_probe(p, CODEC_ID_EAC3);

  649. }

  650. #endif

  651. 

  652. #if CONFIG_AAC_DEMUXER

  653. static int adts_aac_probe(AVProbeData *p)

  654. {

  655.     int max_frames = 0, first_frames = 0;

  656.     int fsize, frames;

  657.     uint8_t *buf0 = p->buf;

  658.     uint8_t *buf2;

  659.     uint8_t *buf;

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

  661. 

  662.     if (ff_id3v2_match(buf0)) {

  663.         buf0 += ff_id3v2_tag_len(buf0);

  664.     }

  665.     buf = buf0;

  666. 

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

  668.         buf2 = buf;

  669. 

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

  671.             uint32_t header = AV_RB16(buf2);

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

  673.                 break;

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

  675.             if(fsize < 7)

  676.                 break;

  677.             buf2 += fsize;

  678.         }

  679.         max_frames = FFMAX(max_frames, frames);

  680.         if(buf == buf0)

  681.             first_frames= frames;

  682.     }

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

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

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

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

  687.     else                   return 0;

  688. }

  689. 

  690. static int adts_aac_read_header(AVFormatContext *s,

  691.                                 AVFormatParameters *ap)

  692. {

  693.     AVStream *st;

  694. 

  695.     st = av_new_stream(s, 0);

  696.     if (!st)

  697.         return AVERROR(ENOMEM);

  698. 

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

  700.     st->codec->codec_id = s->iformat->value;

  701.     st->need_parsing = AVSTREAM_PARSE_FULL;

  702. 

  703.     ff_id3v1_read(s);

  704.     ff_id3v2_read(s);

  705. 

  706.     return 0;

  707. }

  708. 

  709. #endif

  710. 

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

  712. 

  713. #if CONFIG_AAC_DEMUXER

  714. AVInputFormat aac_demuxer = {

  715.     "aac",

  716.     NULL_IF_CONFIG_SMALL("raw ADTS AAC"),

  717.     0,

  718.     adts_aac_probe,

  719.     adts_aac_read_header,

  720.     ff_raw_read_partial_packet,

  721.     .flags= AVFMT_GENERIC_INDEX,

  722.     .extensions = "aac",

  723.     .value = CODEC_ID_AAC,

  724. };

  725. #endif

  726. 

  727. #if CONFIG_AC3_DEMUXER

  728. AVInputFormat ac3_demuxer = {

  729.     "ac3",

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

  731.     0,

  732.     ac3_probe,

  733.     audio_read_header,

  734.     ff_raw_read_partial_packet,

  735.     .flags= AVFMT_GENERIC_INDEX,

  736.     .extensions = "ac3",

  737.     .value = CODEC_ID_AC3,

  738. };

  739. #endif

  740. 

  741. #if CONFIG_AC3_MUXER

  742. AVOutputFormat ac3_muxer = {

  743.     "ac3",

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

  745.     "audio/x-ac3",

  746.     "ac3",

  747.     0,

  748.     CODEC_ID_AC3,

  749.     CODEC_ID_NONE,

  750.     NULL,

  751.     raw_write_packet,

  752.     .flags= AVFMT_NOTIMESTAMPS,

  753. };

  754. #endif

  755. 

  756. #if CONFIG_DIRAC_DEMUXER

  757. AVInputFormat dirac_demuxer = {

  758.     "dirac",

  759.     NULL_IF_CONFIG_SMALL("raw Dirac"),

  760.     0,

  761.     dirac_probe,

  762.     video_read_header,

  763.     ff_raw_read_partial_packet,

  764.     .flags= AVFMT_GENERIC_INDEX,

  765.     .value = CODEC_ID_DIRAC,

  766. };

  767. #endif

  768. 

  769. #if CONFIG_DIRAC_MUXER

  770. AVOutputFormat dirac_muxer = {

  771.     "dirac",

  772.     NULL_IF_CONFIG_SMALL("raw Dirac"),

  773.     NULL,

  774.     "drc",

  775.     0,

  776.     CODEC_ID_NONE,

  777.     CODEC_ID_DIRAC,

  778.     NULL,

  779.     raw_write_packet,

  780.     .flags= AVFMT_NOTIMESTAMPS,

  781. };

  782. #endif

  783. 

  784. #if CONFIG_DNXHD_DEMUXER

  785. AVInputFormat dnxhd_demuxer = {

  786.     "dnxhd",

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

  788.     0,

  789.     dnxhd_probe,

  790.     video_read_header,

  791.     ff_raw_read_partial_packet,

  792.     .flags= AVFMT_GENERIC_INDEX,

  793.     .value = CODEC_ID_DNXHD,

  794. };

  795. #endif

  796. 

  797. #if CONFIG_DNXHD_MUXER

  798. AVOutputFormat dnxhd_muxer = {

  799.     "dnxhd",

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

  801.     NULL,

  802.     "dnxhd",

  803.     0,

  804.     CODEC_ID_NONE,

  805.     CODEC_ID_DNXHD,

  806.     NULL,

  807.     raw_write_packet,

  808.     .flags= AVFMT_NOTIMESTAMPS,

  809. };

  810. #endif

  811. 

  812. #if CONFIG_DTS_DEMUXER

  813. AVInputFormat dts_demuxer = {

  814.     "dts",

  815.     NULL_IF_CONFIG_SMALL("raw DTS"),

  816.     0,

  817.     dts_probe,

  818.     audio_read_header,

  819.     ff_raw_read_partial_packet,

  820.     .flags= AVFMT_GENERIC_INDEX,

  821.     .extensions = "dts",

  822.     .value = CODEC_ID_DTS,

  823. };

  824. #endif

  825. 

  826. #if CONFIG_DTS_MUXER

  827. AVOutputFormat dts_muxer = {

  828.     "dts",

  829.     NULL_IF_CONFIG_SMALL("raw DTS"),

  830.     "audio/x-dca",

  831.     "dts",

  832.     0,

  833.     CODEC_ID_DTS,

  834.     CODEC_ID_NONE,

  835.     NULL,

  836.     raw_write_packet,

  837.     .flags= AVFMT_NOTIMESTAMPS,

  838. };

  839. #endif

  840. 

  841. #if CONFIG_EAC3_DEMUXER

  842. AVInputFormat eac3_demuxer = {

  843.     "eac3",

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

  845.     0,

  846.     eac3_probe,

  847.     audio_read_header,

  848.     ff_raw_read_partial_packet,

  849.     .flags= AVFMT_GENERIC_INDEX,

  850.     .extensions = "eac3",

  851.     .value = CODEC_ID_EAC3,

  852. };

  853. #endif

  854. 

  855. #if CONFIG_EAC3_MUXER

  856. AVOutputFormat eac3_muxer = {

  857.     "eac3",

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

  859.     "audio/x-eac3",

  860.     "eac3",

  861.     0,

  862.     CODEC_ID_EAC3,

  863.     CODEC_ID_NONE,

  864.     NULL,

  865.     raw_write_packet,

  866.     .flags= AVFMT_NOTIMESTAMPS,

  867. };

  868. #endif

  869. 

  870. #if CONFIG_GSM_DEMUXER

  871. AVInputFormat gsm_demuxer = {

  872.     "gsm",

  873.     NULL_IF_CONFIG_SMALL("raw GSM"),

  874.     0,

  875.     NULL,

  876.     audio_read_header,

  877.     ff_raw_read_partial_packet,

  878.     .flags= AVFMT_GENERIC_INDEX,

  879.     .extensions = "gsm",

  880.     .value = CODEC_ID_GSM,

  881. };

  882. #endif

  883. 

  884. #if CONFIG_H261_DEMUXER

  885. AVInputFormat h261_demuxer = {

  886.     "h261",

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

  888.     0,

  889.     h261_probe,

  890.     video_read_header,

  891.     ff_raw_read_partial_packet,

  892.     .flags= AVFMT_GENERIC_INDEX,

  893.     .extensions = "h261",

  894.     .value = CODEC_ID_H261,

  895. };

  896. #endif

  897. 

  898. #if CONFIG_H261_MUXER

  899. AVOutputFormat h261_muxer = {

  900.     "h261",

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

  902.     "video/x-h261",

  903.     "h261",

  904.     0,

  905.     CODEC_ID_NONE,

  906.     CODEC_ID_H261,

  907.     NULL,

  908.     raw_write_packet,

  909.     .flags= AVFMT_NOTIMESTAMPS,

  910. };

  911. #endif

  912. 

  913. #if CONFIG_H263_DEMUXER

  914. AVInputFormat h263_demuxer = {

  915.     "h263",

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

  917.     0,

  918.     h263_probe,

  919.     video_read_header,

  920.     ff_raw_read_partial_packet,

  921.     .flags= AVFMT_GENERIC_INDEX,

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

  923.     .value = CODEC_ID_H263,

  924. };

  925. #endif

  926. 

  927. #if CONFIG_H263_MUXER

  928. AVOutputFormat h263_muxer = {

  929.     "h263",

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

  931.     "video/x-h263",

  932.     "h263",

  933.     0,

  934.     CODEC_ID_NONE,

  935.     CODEC_ID_H263,

  936.     NULL,

  937.     raw_write_packet,

  938.     .flags= AVFMT_NOTIMESTAMPS,

  939. };

  940. #endif

  941. 

  942. #if CONFIG_H264_DEMUXER

  943. AVInputFormat h264_demuxer = {

  944.     "h264",

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

  946.     0,

  947.     h264_probe,

  948.     video_read_header,

  949.     ff_raw_read_partial_packet,

  950.     .flags= AVFMT_GENERIC_INDEX,

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

  952.     .value = CODEC_ID_H264,

  953. };

  954. #endif

  955. 

  956. #if CONFIG_H264_MUXER

  957. AVOutputFormat h264_muxer = {

  958.     "h264",

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

  960.     NULL,

  961.     "h264",

  962.     0,

  963.     CODEC_ID_NONE,

  964.     CODEC_ID_H264,

  965.     NULL,

  966.     raw_write_packet,

  967.     .flags= AVFMT_NOTIMESTAMPS,

  968. };

  969. #endif

  970. 

  971. #if CONFIG_INGENIENT_DEMUXER

  972. AVInputFormat ingenient_demuxer = {

  973.     "ingenient",

  974.     NULL_IF_CONFIG_SMALL("raw Ingenient MJPEG"),

  975.     0,

  976.     NULL,

  977.     video_read_header,

  978.     ingenient_read_packet,

  979.     .flags= AVFMT_GENERIC_INDEX,

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

  981.     .value = CODEC_ID_MJPEG,

  982. };

  983. #endif

  984. 

  985. #if CONFIG_M4V_DEMUXER

  986. AVInputFormat m4v_demuxer = {

  987.     "m4v",

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

  989.     0,

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

  991.     video_read_header,

  992.     ff_raw_read_partial_packet,

  993.     .flags= AVFMT_GENERIC_INDEX,

  994.     .extensions = "m4v",

  995.     .value = CODEC_ID_MPEG4,

  996. };

  997. #endif

  998. 

  999. #if CONFIG_M4V_MUXER

  1000. AVOutputFormat m4v_muxer = {

  1001.     "m4v",

  1002.     NULL_IF_CONFIG_SMALL("raw MPEG-4 video format"),

  1003.     NULL,

  1004.     "m4v",

  1005.     0,

  1006.     CODEC_ID_NONE,

  1007.     CODEC_ID_MPEG4,

  1008.     NULL,

  1009.     raw_write_packet,

  1010.     .flags= AVFMT_NOTIMESTAMPS,

  1011. };

  1012. #endif

  1013. 

  1014. #if CONFIG_MJPEG_DEMUXER

  1015. AVInputFormat mjpeg_demuxer = {

  1016.     "mjpeg",

  1017.     NULL_IF_CONFIG_SMALL("raw MJPEG video"),

  1018.     0,

  1019.     NULL,

  1020.     video_read_header,

  1021.     ff_raw_read_partial_packet,

  1022.     .flags= AVFMT_GENERIC_INDEX,

  1023.     .extensions = "mjpg,mjpeg",

  1024.     .value = CODEC_ID_MJPEG,

  1025. };

  1026. #endif

  1027. 

  1028. #if CONFIG_MJPEG_MUXER

  1029. AVOutputFormat mjpeg_muxer = {

  1030.     "mjpeg",

  1031.     NULL_IF_CONFIG_SMALL("raw MJPEG video"),

  1032.     "video/x-mjpeg",

  1033.     "mjpg,mjpeg",

  1034.     0,

  1035.     CODEC_ID_NONE,

  1036.     CODEC_ID_MJPEG,

  1037.     NULL,

  1038.     raw_write_packet,

  1039.     .flags= AVFMT_NOTIMESTAMPS,

  1040. };

  1041. #endif

  1042. 

  1043. #if CONFIG_MLP_DEMUXER

  1044. AVInputFormat mlp_demuxer = {

  1045.     "mlp",

  1046.     NULL_IF_CONFIG_SMALL("raw MLP"),

  1047.     0,

  1048.     NULL,

  1049.     audio_read_header,

  1050.     ff_raw_read_partial_packet,

  1051.     .flags= AVFMT_GENERIC_INDEX,

  1052.     .extensions = "mlp",

  1053.     .value = CODEC_ID_MLP,

  1054. };

  1055. #endif

  1056. 

  1057. #if CONFIG_MLP_MUXER

  1058. AVOutputFormat mlp_muxer = {

  1059.     "mlp",

  1060.     NULL_IF_CONFIG_SMALL("raw MLP"),

  1061.     NULL,

  1062.     "mlp",

  1063.     0,

  1064.     CODEC_ID_MLP,

  1065.     CODEC_ID_NONE,

  1066.     NULL,

  1067.     raw_write_packet,

  1068.     .flags= AVFMT_NOTIMESTAMPS,

  1069. };

  1070. #endif

  1071. 

  1072. #if CONFIG_TRUEHD_DEMUXER

  1073. AVInputFormat truehd_demuxer = {

  1074.     "truehd",

  1075.     NULL_IF_CONFIG_SMALL("raw TrueHD"),

  1076.     0,

  1077.     NULL,

  1078.     audio_read_header,

  1079.     ff_raw_read_partial_packet,

  1080.     .flags= AVFMT_GENERIC_INDEX,

  1081.     .extensions = "thd",

  1082.     .value = CODEC_ID_TRUEHD,

  1083. };

  1084. #endif

  1085. 

  1086. #if CONFIG_TRUEHD_MUXER

  1087. AVOutputFormat truehd_muxer = {

  1088.     "truehd",

  1089.     NULL_IF_CONFIG_SMALL("raw TrueHD"),

  1090.     NULL,

  1091.     "thd",

  1092.     0,

  1093.     CODEC_ID_TRUEHD,

  1094.     CODEC_ID_NONE,

  1095.     NULL,

  1096.     raw_write_packet,

  1097.     .flags= AVFMT_NOTIMESTAMPS,

  1098. };

  1099. #endif

  1100. 

  1101. #if CONFIG_MPEG1VIDEO_MUXER

  1102. AVOutputFormat mpeg1video_muxer = {

  1103.     "mpeg1video",

  1104.     NULL_IF_CONFIG_SMALL("raw MPEG-1 video"),

  1105.     "video/x-mpeg",

  1106.     "mpg,mpeg,m1v",

  1107.     0,

  1108.     CODEC_ID_NONE,

  1109.     CODEC_ID_MPEG1VIDEO,

  1110.     NULL,

  1111.     raw_write_packet,

  1112.     .flags= AVFMT_NOTIMESTAMPS,

  1113. };

  1114. #endif

  1115. 

  1116. #if CONFIG_MPEG2VIDEO_MUXER

  1117. AVOutputFormat mpeg2video_muxer = {

  1118.     "mpeg2video",

  1119.     NULL_IF_CONFIG_SMALL("raw MPEG-2 video"),

  1120.     NULL,

  1121.     "m2v",

  1122.     0,

  1123.     CODEC_ID_NONE,

  1124.     CODEC_ID_MPEG2VIDEO,

  1125.     NULL,

  1126.     raw_write_packet,

  1127.     .flags= AVFMT_NOTIMESTAMPS,

  1128. };

  1129. #endif

  1130. 

  1131. #if CONFIG_MPEGVIDEO_DEMUXER

  1132. AVInputFormat mpegvideo_demuxer = {

  1133.     "mpegvideo",

  1134.     NULL_IF_CONFIG_SMALL("raw MPEG video"),

  1135.     0,

  1136.     mpegvideo_probe,

  1137.     video_read_header,

  1138.     ff_raw_read_partial_packet,

  1139.     .flags= AVFMT_GENERIC_INDEX,

  1140.     .value = CODEC_ID_MPEG1VIDEO,

  1141. };

  1142. #endif

  1143. 

  1144. #if CONFIG_CAVSVIDEO_DEMUXER

  1145. AVInputFormat cavsvideo_demuxer = {

  1146.     "cavsvideo",

  1147.     NULL_IF_CONFIG_SMALL("raw Chinese AVS video"),

  1148.     0,

  1149.     cavsvideo_probe,

  1150.     video_read_header,

  1151.     ff_raw_read_partial_packet,

  1152.     .flags= AVFMT_GENERIC_INDEX,

  1153.     .value = CODEC_ID_CAVS,

  1154. };

  1155. #endif

  1156. 

  1157. #if CONFIG_NULL_MUXER

  1158. AVOutputFormat null_muxer = {

  1159.     "null",

  1160.     NULL_IF_CONFIG_SMALL("raw null video format"),

  1161.     NULL,

  1162.     NULL,

  1163.     0,

  1164. #if HAVE_BIGENDIAN

  1165.     CODEC_ID_PCM_S16BE,

  1166. #else

  1167.     CODEC_ID_PCM_S16LE,

  1168. #endif

  1169.     CODEC_ID_RAWVIDEO,

  1170.     NULL,

  1171.     null_write_packet,

  1172.     .flags = AVFMT_NOFILE | AVFMT_RAWPICTURE | AVFMT_NOTIMESTAMPS,

  1173. };

  1174. #endif

  1175. 

  1176. #if CONFIG_RAWVIDEO_DEMUXER

  1177. AVInputFormat rawvideo_demuxer = {

  1178.     "rawvideo",

  1179.     NULL_IF_CONFIG_SMALL("raw video format"),

  1180.     0,

  1181.     NULL,

  1182.     raw_read_header,

  1183.     rawvideo_read_packet,

  1184.     .flags= AVFMT_GENERIC_INDEX,

  1185.     .extensions = "yuv,cif,qcif,rgb",

  1186.     .value = CODEC_ID_RAWVIDEO,

  1187. };

  1188. #endif

  1189. 

  1190. #if CONFIG_RAWVIDEO_MUXER

  1191. AVOutputFormat rawvideo_muxer = {

  1192.     "rawvideo",

  1193.     NULL_IF_CONFIG_SMALL("raw video format"),

  1194.     NULL,

  1195.     "yuv,rgb",

  1196.     0,

  1197.     CODEC_ID_NONE,

  1198.     CODEC_ID_RAWVIDEO,

  1199.     NULL,

  1200.     raw_write_packet,

  1201.     .flags= AVFMT_NOTIMESTAMPS,

  1202. };

  1203. #endif

  1204. 

  1205. #if CONFIG_ROQ_MUXER

  1206. AVOutputFormat roq_muxer =

  1207. {

  1208.     "RoQ",

  1209.     NULL_IF_CONFIG_SMALL("raw id RoQ format"),

  1210.     NULL,

  1211.     "roq",

  1212.     0,

  1213.     CODEC_ID_ROQ_DPCM,

  1214.     CODEC_ID_ROQ,

  1215.     roq_write_header,

  1216.     raw_write_packet,

  1217. };

  1218. #endif

  1219. 

  1220. #if CONFIG_SHORTEN_DEMUXER

  1221. AVInputFormat shorten_demuxer = {

  1222.     "shn",

  1223.     NULL_IF_CONFIG_SMALL("raw Shorten"),

  1224.     0,

  1225.     NULL,

  1226.     audio_read_header,

  1227.     ff_raw_read_partial_packet,

  1228.     .flags= AVFMT_GENERIC_INDEX,

  1229.     .extensions = "shn",

  1230.     .value = CODEC_ID_SHORTEN,

  1231. };

  1232. #endif

  1233. 

  1234. #if CONFIG_VC1_DEMUXER

  1235. AVInputFormat vc1_demuxer = {

  1236.     "vc1",

  1237.     NULL_IF_CONFIG_SMALL("raw VC-1"),

  1238.     0,

  1239.     NULL /* vc1_probe */,

  1240.     video_read_header,

  1241.     ff_raw_read_partial_packet,

  1242.     .extensions = "vc1",

  1243.     .value = CODEC_ID_VC1,

  1244. };

  1245. #endif

  1246. 

  1247. /* PCM formats */

  1248. 

  1249. #define PCMINPUTDEF(name, long_name, ext, codec) \

  1250. AVInputFormat pcm_ ## name ## _demuxer = {\

  1251.     #name,\

  1252.     NULL_IF_CONFIG_SMALL(long_name),\

  1253.     0,\

  1254.     NULL,\

  1255.     raw_read_header,\

  1256.     raw_read_packet,\

  1257.     NULL,\

  1258.     pcm_read_seek,\

  1259.     .flags= AVFMT_GENERIC_INDEX,\

  1260.     .extensions = ext,\

  1261.     .value = codec,\

  1262. };

  1263. 

  1264. #define PCMOUTPUTDEF(name, long_name, ext, codec) \

  1265. AVOutputFormat pcm_ ## name ## _muxer = {\

  1266.     #name,\

  1267.     NULL_IF_CONFIG_SMALL(long_name),\

  1268.     NULL,\

  1269.     ext,\

  1270.     0,\

  1271.     codec,\

  1272.     CODEC_ID_NONE,\

  1273.     NULL,\

  1274.     raw_write_packet,\

  1275.     .flags= AVFMT_NOTIMESTAMPS,\

  1276. };

  1277. 

  1278. 

  1279. #if  !CONFIG_MUXERS && CONFIG_DEMUXERS

  1280. #define PCMDEF(name, long_name, ext, codec) \

  1281.         PCMINPUTDEF(name, long_name, ext, codec)

  1282. #elif CONFIG_MUXERS && !CONFIG_DEMUXERS

  1283. #define PCMDEF(name, long_name, ext, codec) \

  1284.         PCMOUTPUTDEF(name, long_name, ext, codec)

  1285. #elif CONFIG_MUXERS && CONFIG_DEMUXERS

  1286. #define PCMDEF(name, long_name, ext, codec) \

  1287.         PCMINPUTDEF(name, long_name, ext, codec)\

  1288.         PCMOUTPUTDEF(name, long_name, ext, codec)

  1289. #else

  1290. #define PCMDEF(name, long_name, ext, codec)

  1291. #endif

  1292. 

  1293. #if HAVE_BIGENDIAN

  1294. #define BE_DEF(s) s

  1295. #define LE_DEF(s) NULL

  1296. #else

  1297. #define BE_DEF(s) NULL

  1298. #define LE_DEF(s) s

  1299. #endif

  1300. 

  1301. PCMDEF(f64be, "PCM 64 bit floating-point big-endian format",

  1302.        NULL, CODEC_ID_PCM_F64BE)

  1303. 

  1304. PCMDEF(f64le, "PCM 64 bit floating-point little-endian format",

  1305.        NULL, CODEC_ID_PCM_F64LE)

  1306. 

  1307. PCMDEF(f32be, "PCM 32 bit floating-point big-endian format",

  1308.        NULL, CODEC_ID_PCM_F32BE)

  1309. 

  1310. PCMDEF(f32le, "PCM 32 bit floating-point little-endian format",

  1311.        NULL, CODEC_ID_PCM_F32LE)

  1312. 

  1313. PCMDEF(s32be, "PCM signed 32 bit big-endian format",

  1314.        NULL, CODEC_ID_PCM_S32BE)

  1315. 

  1316. PCMDEF(s32le, "PCM signed 32 bit little-endian format",

  1317.        NULL, CODEC_ID_PCM_S32LE)

  1318. 

  1319. PCMDEF(s24be, "PCM signed 24 bit big-endian format",

  1320.        NULL, CODEC_ID_PCM_S24BE)

  1321. 

  1322. PCMDEF(s24le, "PCM signed 24 bit little-endian format",

  1323.        NULL, CODEC_ID_PCM_S24LE)

  1324. 

  1325. PCMDEF(s16be, "PCM signed 16 bit big-endian format",

  1326.        BE_DEF("sw"), CODEC_ID_PCM_S16BE)

  1327. 

  1328. PCMDEF(s16le, "PCM signed 16 bit little-endian format",

  1329.        LE_DEF("sw"), CODEC_ID_PCM_S16LE)

  1330. 

  1331. PCMDEF(s8, "PCM signed 8 bit format",

  1332.        "sb", CODEC_ID_PCM_S8)

  1333. 

  1334. PCMDEF(u32be, "PCM unsigned 32 bit big-endian format",

  1335.        NULL, CODEC_ID_PCM_U32BE)

  1336. 

  1337. PCMDEF(u32le, "PCM unsigned 32 bit little-endian format",

  1338.        NULL, CODEC_ID_PCM_U32LE)

  1339. 

  1340. PCMDEF(u24be, "PCM unsigned 24 bit big-endian format",

  1341.        NULL, CODEC_ID_PCM_U24BE)

  1342. 

  1343. PCMDEF(u24le, "PCM unsigned 24 bit little-endian format",

  1344.        NULL, CODEC_ID_PCM_U24LE)

  1345. 

  1346. PCMDEF(u16be, "PCM unsigned 16 bit big-endian format",

  1347.        BE_DEF("uw"), CODEC_ID_PCM_U16BE)

  1348. 

  1349. PCMDEF(u16le, "PCM unsigned 16 bit little-endian format",

  1350.        LE_DEF("uw"), CODEC_ID_PCM_U16LE)

  1351. 

  1352. PCMDEF(u8, "PCM unsigned 8 bit format",

  1353.        "ub", CODEC_ID_PCM_U8)

  1354. 

  1355. PCMDEF(alaw, "PCM A-law format",

  1356.        "al", CODEC_ID_PCM_ALAW)

  1357. 

  1358. PCMDEF(mulaw, "PCM mu-law format",

  1359.        "ul", CODEC_ID_PCM_MULAW)