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FFmpeg/libavcodec/pcm.c

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  1. /*

  2.  * PCM codecs

  3.  * Copyright (c) 2001 Fabrice Bellard

  4.  *

  5.  * This file is part of Libav.

  6.  *

  7.  * Libav is free software; you can redistribute it and/or

  8.  * modify it under the terms of the GNU Lesser General Public

  9.  * License as published by the Free Software Foundation; either

  10.  * version 2.1 of the License, or (at your option) any later version.

  11.  *

  12.  * Libav is distributed in the hope that it will be useful,

  13.  * but WITHOUT ANY WARRANTY; without even the implied warranty of

  14.  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

  15.  * Lesser General Public License for more details.

  16.  *

  17.  * You should have received a copy of the GNU Lesser General Public

  18.  * License along with Libav; if not, write to the Free Software

  19.  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA

  20.  */

  21. 

  22. /**

  23.  * @file

  24.  * PCM codecs

  25.  */

  26. 

  27. #include "avcodec.h"

  28. #include "libavutil/common.h" /* for av_reverse */

  29. #include "bytestream.h"

  30. #include "pcm_tablegen.h"

  31. 

  32. #define MAX_CHANNELS 64

  33. 

  34. static av_cold int pcm_encode_init(AVCodecContext *avctx)

  35. {

  36.     avctx->frame_size = 1;

  37.     switch(avctx->codec->id) {

  38.     case CODEC_ID_PCM_ALAW:

  39.         pcm_alaw_tableinit();

  40.         break;

  41.     case CODEC_ID_PCM_MULAW:

  42.         pcm_ulaw_tableinit();

  43.         break;

  44.     default:

  45.         break;

  46.     }

  47. 

  48.     avctx->bits_per_coded_sample = av_get_bits_per_sample(avctx->codec->id);

  49.     avctx->block_align = avctx->channels * avctx->bits_per_coded_sample/8;

  50.     avctx->coded_frame= avcodec_alloc_frame();

  51.     avctx->coded_frame->key_frame= 1;

  52. 

  53.     return 0;

  54. }

  55. 

  56. static av_cold int pcm_encode_close(AVCodecContext *avctx)

  57. {

  58.     av_freep(&avctx->coded_frame);

  59. 

  60.     return 0;

  61. }

  62. 

  63. /**

  64.  * Write PCM samples macro

  65.  * @param type Datatype of native machine format

  66.  * @param endian bytestream_put_xxx() suffix

  67.  * @param src Source pointer (variable name)

  68.  * @param dst Destination pointer (variable name)

  69.  * @param n Total number of samples (variable name)

  70.  * @param shift Bitshift (bits)

  71.  * @param offset Sample value offset

  72.  */

  73. #define ENCODE(type, endian, src, dst, n, shift, offset) \

  74.     samples_##type = (const type*) src; \

  75.     for(;n>0;n--) { \

  76.         register type v = (*samples_##type++ >> shift) + offset; \

  77.         bytestream_put_##endian(&dst, v); \

  78.     }

  79. 

  80. static int pcm_encode_frame(AVCodecContext *avctx,

  81.                             unsigned char *frame, int buf_size, void *data)

  82. {

  83.     int n, sample_size, v;

  84.     const short *samples;

  85.     unsigned char *dst;

  86.     const uint8_t *srcu8;

  87.     const int16_t *samples_int16_t;

  88.     const int32_t *samples_int32_t;

  89.     const int64_t *samples_int64_t;

  90.     const uint16_t *samples_uint16_t;

  91.     const uint32_t *samples_uint32_t;

  92. 

  93.     sample_size = av_get_bits_per_sample(avctx->codec->id)/8;

  94.     n = buf_size / sample_size;

  95.     samples = data;

  96.     dst = frame;

  97. 

  98.     if (avctx->sample_fmt!=avctx->codec->sample_fmts[0]) {

  99.         av_log(avctx, AV_LOG_ERROR, "invalid sample_fmt\n");

  100.         return -1;

  101.     }

  102. 

  103.     switch(avctx->codec->id) {

  104.     case CODEC_ID_PCM_U32LE:

  105.         ENCODE(uint32_t, le32, samples, dst, n, 0, 0x80000000)

  106.         break;

  107.     case CODEC_ID_PCM_U32BE:

  108.         ENCODE(uint32_t, be32, samples, dst, n, 0, 0x80000000)

  109.         break;

  110.     case CODEC_ID_PCM_S24LE:

  111.         ENCODE(int32_t, le24, samples, dst, n, 8, 0)

  112.         break;

  113.     case CODEC_ID_PCM_S24BE:

  114.         ENCODE(int32_t, be24, samples, dst, n, 8, 0)

  115.         break;

  116.     case CODEC_ID_PCM_U24LE:

  117.         ENCODE(uint32_t, le24, samples, dst, n, 8, 0x800000)

  118.         break;

  119.     case CODEC_ID_PCM_U24BE:

  120.         ENCODE(uint32_t, be24, samples, dst, n, 8, 0x800000)

  121.         break;

  122.     case CODEC_ID_PCM_S24DAUD:

  123.         for(;n>0;n--) {

  124.             uint32_t tmp = av_reverse[(*samples >> 8) & 0xff] +

  125.                            (av_reverse[*samples & 0xff] << 8);

  126.             tmp <<= 4; // sync flags would go here

  127.             bytestream_put_be24(&dst, tmp);

  128.             samples++;

  129.         }

  130.         break;

  131.     case CODEC_ID_PCM_U16LE:

  132.         ENCODE(uint16_t, le16, samples, dst, n, 0, 0x8000)

  133.         break;

  134.     case CODEC_ID_PCM_U16BE:

  135.         ENCODE(uint16_t, be16, samples, dst, n, 0, 0x8000)

  136.         break;

  137.     case CODEC_ID_PCM_S8:

  138.         srcu8= data;

  139.         for(;n>0;n--) {

  140.             v = *srcu8++;

  141.             *dst++ = v - 128;

  142.         }

  143.         break;

  144. #if HAVE_BIGENDIAN

  145.     case CODEC_ID_PCM_F64LE:

  146.         ENCODE(int64_t, le64, samples, dst, n, 0, 0)

  147.         break;

  148.     case CODEC_ID_PCM_S32LE:

  149.     case CODEC_ID_PCM_F32LE:

  150.         ENCODE(int32_t, le32, samples, dst, n, 0, 0)

  151.         break;

  152.     case CODEC_ID_PCM_S16LE:

  153.         ENCODE(int16_t, le16, samples, dst, n, 0, 0)

  154.         break;

  155.     case CODEC_ID_PCM_F64BE:

  156.     case CODEC_ID_PCM_F32BE:

  157.     case CODEC_ID_PCM_S32BE:

  158.     case CODEC_ID_PCM_S16BE:

  159. #else

  160.     case CODEC_ID_PCM_F64BE:

  161.         ENCODE(int64_t, be64, samples, dst, n, 0, 0)

  162.         break;

  163.     case CODEC_ID_PCM_F32BE:

  164.     case CODEC_ID_PCM_S32BE:

  165.         ENCODE(int32_t, be32, samples, dst, n, 0, 0)

  166.         break;

  167.     case CODEC_ID_PCM_S16BE:

  168.         ENCODE(int16_t, be16, samples, dst, n, 0, 0)

  169.         break;

  170.     case CODEC_ID_PCM_F64LE:

  171.     case CODEC_ID_PCM_F32LE:

  172.     case CODEC_ID_PCM_S32LE:

  173.     case CODEC_ID_PCM_S16LE:

  174. #endif /* HAVE_BIGENDIAN */

  175.     case CODEC_ID_PCM_U8:

  176.         memcpy(dst, samples, n*sample_size);

  177.         dst += n*sample_size;

  178.         break;

  179.     case CODEC_ID_PCM_ZORK:

  180.         for(;n>0;n--) {

  181.             v= *samples++ >> 8;

  182.             if(v<0)   v = -v;

  183.             else      v+= 128;

  184.             *dst++ = v;

  185.         }

  186.         break;

  187.     case CODEC_ID_PCM_ALAW:

  188.         for(;n>0;n--) {

  189.             v = *samples++;

  190.             *dst++ = linear_to_alaw[(v + 32768) >> 2];

  191.         }

  192.         break;

  193.     case CODEC_ID_PCM_MULAW:

  194.         for(;n>0;n--) {

  195.             v = *samples++;

  196.             *dst++ = linear_to_ulaw[(v + 32768) >> 2];

  197.         }

  198.         break;

  199.     default:

  200.         return -1;

  201.     }

  202.     //avctx->frame_size = (dst - frame) / (sample_size * avctx->channels);

  203. 

  204.     return dst - frame;

  205. }

  206. 

  207. typedef struct PCMDecode {

  208.     short table[256];

  209. } PCMDecode;

  210. 

  211. static av_cold int pcm_decode_init(AVCodecContext * avctx)

  212. {

  213.     PCMDecode *s = avctx->priv_data;

  214.     int i;

  215. 

  216.     switch(avctx->codec->id) {

  217.     case CODEC_ID_PCM_ALAW:

  218.         for(i=0;i<256;i++)

  219.             s->table[i] = alaw2linear(i);

  220.         break;

  221.     case CODEC_ID_PCM_MULAW:

  222.         for(i=0;i<256;i++)

  223.             s->table[i] = ulaw2linear(i);

  224.         break;

  225.     default:

  226.         break;

  227.     }

  228. 

  229.     avctx->sample_fmt = avctx->codec->sample_fmts[0];

  230. 

  231.     if (avctx->sample_fmt == AV_SAMPLE_FMT_S32)

  232.         avctx->bits_per_raw_sample = av_get_bits_per_sample(avctx->codec->id);

  233. 

  234.     return 0;

  235. }

  236. 

  237. /**

  238.  * Read PCM samples macro

  239.  * @param type Datatype of native machine format

  240.  * @param endian bytestream_get_xxx() endian suffix

  241.  * @param src Source pointer (variable name)

  242.  * @param dst Destination pointer (variable name)

  243.  * @param n Total number of samples (variable name)

  244.  * @param shift Bitshift (bits)

  245.  * @param offset Sample value offset

  246.  */

  247. #define DECODE(type, endian, src, dst, n, shift, offset) \

  248.     dst_##type = (type*)dst; \

  249.     for(;n>0;n--) { \

  250.         register type v = bytestream_get_##endian(&src); \

  251.         *dst_##type++ = (v - offset) << shift; \

  252.     } \

  253.     dst = (short*)dst_##type;

  254. 

  255. static int pcm_decode_frame(AVCodecContext *avctx,

  256.                             void *data, int *data_size,

  257.                             AVPacket *avpkt)

  258. {

  259.     const uint8_t *buf = avpkt->data;

  260.     int buf_size = avpkt->size;

  261.     PCMDecode *s = avctx->priv_data;

  262.     int sample_size, c, n, i;

  263.     short *samples;

  264.     const uint8_t *src, *src8, *src2[MAX_CHANNELS];

  265.     uint8_t *dstu8;

  266.     int16_t *dst_int16_t;

  267.     int32_t *dst_int32_t;

  268.     int64_t *dst_int64_t;

  269.     uint16_t *dst_uint16_t;

  270.     uint32_t *dst_uint32_t;

  271. 

  272.     samples = data;

  273.     src = buf;

  274. 

  275.     if (avctx->sample_fmt!=avctx->codec->sample_fmts[0]) {

  276.         av_log(avctx, AV_LOG_ERROR, "invalid sample_fmt\n");

  277.         return -1;

  278.     }

  279. 

  280.     if(avctx->channels <= 0 || avctx->channels > MAX_CHANNELS){

  281.         av_log(avctx, AV_LOG_ERROR, "PCM channels out of bounds\n");

  282.         return -1;

  283.     }

  284. 

  285.     sample_size = av_get_bits_per_sample(avctx->codec_id)/8;

  286. 

  287.     /* av_get_bits_per_sample returns 0 for CODEC_ID_PCM_DVD */

  288.     if (CODEC_ID_PCM_DVD == avctx->codec_id)

  289.         /* 2 samples are interleaved per block in PCM_DVD */

  290.         sample_size = avctx->bits_per_coded_sample * 2 / 8;

  291.     else if (avctx->codec_id == CODEC_ID_PCM_LXF)

  292.         /* we process 40-bit blocks per channel for LXF */

  293.         sample_size = 5;

  294. 

  295.     if (sample_size == 0) {

  296.         av_log(avctx, AV_LOG_ERROR, "Invalid sample_size\n");

  297.         return AVERROR(EINVAL);

  298.     }

  299. 

  300.     n = avctx->channels * sample_size;

  301. 

  302.     if(n && buf_size % n){

  303.         if (buf_size < n) {

  304.             av_log(avctx, AV_LOG_ERROR, "invalid PCM packet\n");

  305.             return -1;

  306.         }else

  307.             buf_size -= buf_size % n;

  308.     }

  309. 

  310.     buf_size= FFMIN(buf_size, *data_size/2);

  311.     *data_size=0;

  312. 

  313.     n = buf_size/sample_size;

  314. 

  315.     switch(avctx->codec->id) {

  316.     case CODEC_ID_PCM_U32LE:

  317.         DECODE(uint32_t, le32, src, samples, n, 0, 0x80000000)

  318.         break;

  319.     case CODEC_ID_PCM_U32BE:

  320.         DECODE(uint32_t, be32, src, samples, n, 0, 0x80000000)

  321.         break;

  322.     case CODEC_ID_PCM_S24LE:

  323.         DECODE(int32_t, le24, src, samples, n, 8, 0)

  324.         break;

  325.     case CODEC_ID_PCM_S24BE:

  326.         DECODE(int32_t, be24, src, samples, n, 8, 0)

  327.         break;

  328.     case CODEC_ID_PCM_U24LE:

  329.         DECODE(uint32_t, le24, src, samples, n, 8, 0x800000)

  330.         break;

  331.     case CODEC_ID_PCM_U24BE:

  332.         DECODE(uint32_t, be24, src, samples, n, 8, 0x800000)

  333.         break;

  334.     case CODEC_ID_PCM_S24DAUD:

  335.         for(;n>0;n--) {

  336.           uint32_t v = bytestream_get_be24(&src);

  337.           v >>= 4; // sync flags are here

  338.           *samples++ = av_reverse[(v >> 8) & 0xff] +

  339.                        (av_reverse[v & 0xff] << 8);

  340.         }

  341.         break;

  342.     case CODEC_ID_PCM_S16LE_PLANAR:

  343.         n /= avctx->channels;

  344.         for(c=0;c<avctx->channels;c++)

  345.             src2[c] = &src[c*n*2];

  346.         for(;n>0;n--)

  347.             for(c=0;c<avctx->channels;c++)

  348.                 *samples++ = bytestream_get_le16(&src2[c]);

  349.         src = src2[avctx->channels-1];

  350.         break;

  351.     case CODEC_ID_PCM_U16LE:

  352.         DECODE(uint16_t, le16, src, samples, n, 0, 0x8000)

  353.         break;

  354.     case CODEC_ID_PCM_U16BE:

  355.         DECODE(uint16_t, be16, src, samples, n, 0, 0x8000)

  356.         break;

  357.     case CODEC_ID_PCM_S8:

  358.         dstu8= (uint8_t*)samples;

  359.         for(;n>0;n--) {

  360.             *dstu8++ = *src++ + 128;

  361.         }

  362.         samples= (short*)dstu8;

  363.         break;

  364. #if HAVE_BIGENDIAN

  365.     case CODEC_ID_PCM_F64LE:

  366.         DECODE(int64_t, le64, src, samples, n, 0, 0)

  367.         break;

  368.     case CODEC_ID_PCM_S32LE:

  369.     case CODEC_ID_PCM_F32LE:

  370.         DECODE(int32_t, le32, src, samples, n, 0, 0)

  371.         break;

  372.     case CODEC_ID_PCM_S16LE:

  373.         DECODE(int16_t, le16, src, samples, n, 0, 0)

  374.         break;

  375.     case CODEC_ID_PCM_F64BE:

  376.     case CODEC_ID_PCM_F32BE:

  377.     case CODEC_ID_PCM_S32BE:

  378.     case CODEC_ID_PCM_S16BE:

  379. #else

  380.     case CODEC_ID_PCM_F64BE:

  381.         DECODE(int64_t, be64, src, samples, n, 0, 0)

  382.         break;

  383.     case CODEC_ID_PCM_F32BE:

  384.     case CODEC_ID_PCM_S32BE:

  385.         DECODE(int32_t, be32, src, samples, n, 0, 0)

  386.         break;

  387.     case CODEC_ID_PCM_S16BE:

  388.         DECODE(int16_t, be16, src, samples, n, 0, 0)

  389.         break;

  390.     case CODEC_ID_PCM_F64LE:

  391.     case CODEC_ID_PCM_F32LE:

  392.     case CODEC_ID_PCM_S32LE:

  393.     case CODEC_ID_PCM_S16LE:

  394. #endif /* HAVE_BIGENDIAN */

  395.     case CODEC_ID_PCM_U8:

  396.         memcpy(samples, src, n*sample_size);

  397.         src += n*sample_size;

  398.         samples = (short*)((uint8_t*)data + n*sample_size);

  399.         break;

  400.     case CODEC_ID_PCM_ZORK:

  401.         for(;n>0;n--) {

  402.             int x= *src++;

  403.             if(x&128) x-= 128;

  404.             else      x = -x;

  405.             *samples++ = x << 8;

  406.         }

  407.         break;

  408.     case CODEC_ID_PCM_ALAW:

  409.     case CODEC_ID_PCM_MULAW:

  410.         for(;n>0;n--) {

  411.             *samples++ = s->table[*src++];

  412.         }

  413.         break;

  414.     case CODEC_ID_PCM_DVD:

  415.         dst_int32_t = data;

  416.         n /= avctx->channels;

  417.         switch (avctx->bits_per_coded_sample) {

  418.         case 20:

  419.             while (n--) {

  420.                 c = avctx->channels;

  421.                 src8 = src + 4*c;

  422.                 while (c--) {

  423.                     *dst_int32_t++ = (bytestream_get_be16(&src) << 16) + ((*src8   &0xf0) << 8);

  424.                     *dst_int32_t++ = (bytestream_get_be16(&src) << 16) + ((*src8++ &0x0f) << 12);

  425.                 }

  426.                 src = src8;

  427.             }

  428.             break;

  429.         case 24:

  430.             while (n--) {

  431.                 c = avctx->channels;

  432.                 src8 = src + 4*c;

  433.                 while (c--) {

  434.                     *dst_int32_t++ = (bytestream_get_be16(&src) << 16) + ((*src8++) << 8);

  435.                     *dst_int32_t++ = (bytestream_get_be16(&src) << 16) + ((*src8++) << 8);

  436.                 }

  437.                 src = src8;

  438.             }

  439.             break;

  440.         default:

  441.             av_log(avctx, AV_LOG_ERROR, "PCM DVD unsupported sample depth\n");

  442.             return -1;

  443.         }

  444.         samples = (short *) dst_int32_t;

  445.         break;

  446.     case CODEC_ID_PCM_LXF:

  447.         dst_int32_t = data;

  448.         n /= avctx->channels;

  449.         //unpack and de-planerize

  450.         for (i = 0; i < n; i++) {

  451.             for (c = 0, src8 = src + i*5; c < avctx->channels; c++, src8 += n*5) {

  452.                 //extract low 20 bits and expand to 32 bits

  453.                 *dst_int32_t++ = (src8[2] << 28) | (src8[1] << 20) | (src8[0] << 12) |

  454.                                  ((src8[2] & 0xF) << 8) | src8[1];

  455.             }

  456. 

  457.             for (c = 0, src8 = src + i*5; c < avctx->channels; c++, src8 += n*5) {

  458.                 //extract high 20 bits and expand to 32 bits

  459.                 *dst_int32_t++ = (src8[4] << 24) | (src8[3] << 16) |

  460.                                  ((src8[2] & 0xF0) << 8) | (src8[4] << 4) | (src8[3] >> 4);

  461.             }

  462.         }

  463.         src += n * avctx->channels * 5;

  464.         samples = (short *) dst_int32_t;

  465.         break;

  466.     default:

  467.         return -1;

  468.     }

  469.     *data_size = (uint8_t *)samples - (uint8_t *)data;

  470.     return src - buf;

  471. }

  472. 

  473. #if CONFIG_ENCODERS

  474. #define PCM_ENCODER(id_,sample_fmt_,name_,long_name_) \

  475. AVCodec ff_ ## name_ ## _encoder = {            \

  476.     .name        = #name_,                      \

  477.     .type        = AVMEDIA_TYPE_AUDIO,          \

  478.     .id          = id_,                         \

  479.     .init        = pcm_encode_init,             \

  480.     .encode      = pcm_encode_frame,            \

  481.     .close       = pcm_encode_close,            \

  482.     .sample_fmts = (const enum AVSampleFormat[]){sample_fmt_,AV_SAMPLE_FMT_NONE}, \

  483.     .long_name = NULL_IF_CONFIG_SMALL(long_name_), \

  484. }

  485. #else

  486. #define PCM_ENCODER(id,sample_fmt_,name,long_name_)

  487. #endif

  488. 

  489. #if CONFIG_DECODERS

  490. #define PCM_DECODER(id_,sample_fmt_,name_,long_name_)         \

  491. AVCodec ff_ ## name_ ## _decoder = {            \

  492.     .name           = #name_,                   \

  493.     .type           = AVMEDIA_TYPE_AUDIO,       \

  494.     .id             = id_,                      \

  495.     .priv_data_size = sizeof(PCMDecode),        \

  496.     .init           = pcm_decode_init,          \

  497.     .decode         = pcm_decode_frame,         \

  498.     .sample_fmts = (const enum AVSampleFormat[]){sample_fmt_,AV_SAMPLE_FMT_NONE}, \

  499.     .long_name = NULL_IF_CONFIG_SMALL(long_name_), \

  500. }

  501. #else

  502. #define PCM_DECODER(id,sample_fmt_,name,long_name_)

  503. #endif

  504. 

  505. #define PCM_CODEC(id, sample_fmt_, name, long_name_)         \

  506.     PCM_ENCODER(id,sample_fmt_,name,long_name_); PCM_DECODER(id,sample_fmt_,name,long_name_)

  507. 

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

  509. PCM_CODEC  (CODEC_ID_PCM_ALAW,  AV_SAMPLE_FMT_S16, pcm_alaw, "PCM A-law");

  510. PCM_DECODER(CODEC_ID_PCM_DVD,   AV_SAMPLE_FMT_S32, pcm_dvd, "PCM signed 20|24-bit big-endian");

  511. PCM_CODEC  (CODEC_ID_PCM_F32BE, AV_SAMPLE_FMT_FLT, pcm_f32be, "PCM 32-bit floating point big-endian");

  512. PCM_CODEC  (CODEC_ID_PCM_F32LE, AV_SAMPLE_FMT_FLT, pcm_f32le, "PCM 32-bit floating point little-endian");

  513. PCM_CODEC  (CODEC_ID_PCM_F64BE, AV_SAMPLE_FMT_DBL, pcm_f64be, "PCM 64-bit floating point big-endian");

  514. PCM_CODEC  (CODEC_ID_PCM_F64LE, AV_SAMPLE_FMT_DBL, pcm_f64le, "PCM 64-bit floating point little-endian");

  515. PCM_DECODER(CODEC_ID_PCM_LXF,   AV_SAMPLE_FMT_S32, pcm_lxf, "PCM signed 20-bit little-endian planar");

  516. PCM_CODEC  (CODEC_ID_PCM_MULAW, AV_SAMPLE_FMT_S16, pcm_mulaw, "PCM mu-law");

  517. PCM_CODEC  (CODEC_ID_PCM_S8,    AV_SAMPLE_FMT_U8,  pcm_s8, "PCM signed 8-bit");

  518. PCM_CODEC  (CODEC_ID_PCM_S16BE, AV_SAMPLE_FMT_S16, pcm_s16be, "PCM signed 16-bit big-endian");

  519. PCM_CODEC  (CODEC_ID_PCM_S16LE, AV_SAMPLE_FMT_S16, pcm_s16le, "PCM signed 16-bit little-endian");

  520. PCM_DECODER(CODEC_ID_PCM_S16LE_PLANAR, AV_SAMPLE_FMT_S16, pcm_s16le_planar, "PCM 16-bit little-endian planar");

  521. PCM_CODEC  (CODEC_ID_PCM_S24BE, AV_SAMPLE_FMT_S32, pcm_s24be, "PCM signed 24-bit big-endian");

  522. PCM_CODEC  (CODEC_ID_PCM_S24DAUD, AV_SAMPLE_FMT_S16,  pcm_s24daud, "PCM D-Cinema audio signed 24-bit");

  523. PCM_CODEC  (CODEC_ID_PCM_S24LE, AV_SAMPLE_FMT_S32, pcm_s24le, "PCM signed 24-bit little-endian");

  524. PCM_CODEC  (CODEC_ID_PCM_S32BE, AV_SAMPLE_FMT_S32, pcm_s32be, "PCM signed 32-bit big-endian");

  525. PCM_CODEC  (CODEC_ID_PCM_S32LE, AV_SAMPLE_FMT_S32, pcm_s32le, "PCM signed 32-bit little-endian");

  526. PCM_CODEC  (CODEC_ID_PCM_U8,    AV_SAMPLE_FMT_U8,  pcm_u8, "PCM unsigned 8-bit");

  527. PCM_CODEC  (CODEC_ID_PCM_U16BE, AV_SAMPLE_FMT_S16, pcm_u16be, "PCM unsigned 16-bit big-endian");

  528. PCM_CODEC  (CODEC_ID_PCM_U16LE, AV_SAMPLE_FMT_S16, pcm_u16le, "PCM unsigned 16-bit little-endian");

  529. PCM_CODEC  (CODEC_ID_PCM_U24BE, AV_SAMPLE_FMT_S32, pcm_u24be, "PCM unsigned 24-bit big-endian");

  530. PCM_CODEC  (CODEC_ID_PCM_U24LE, AV_SAMPLE_FMT_S32, pcm_u24le, "PCM unsigned 24-bit little-endian");

  531. PCM_CODEC  (CODEC_ID_PCM_U32BE, AV_SAMPLE_FMT_S32, pcm_u32be, "PCM unsigned 32-bit big-endian");

  532. PCM_CODEC  (CODEC_ID_PCM_U32LE, AV_SAMPLE_FMT_S32, pcm_u32le, "PCM unsigned 32-bit little-endian");

  533. PCM_CODEC  (CODEC_ID_PCM_ZORK,  AV_SAMPLE_FMT_S16, pcm_zork, "PCM Zork");