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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 "internal.h"

  31. #include "pcm_tablegen.h"

  32. 

  33. #define MAX_CHANNELS 64

  34. 

  35. static av_cold int pcm_encode_init(AVCodecContext *avctx)

  36. {

  37.     avctx->frame_size = 0;

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

  39.     case CODEC_ID_PCM_ALAW:

  40.         pcm_alaw_tableinit();

  41.         break;

  42.     case CODEC_ID_PCM_MULAW:

  43.         pcm_ulaw_tableinit();

  44.         break;

  45.     default:

  46.         break;

  47.     }

  48. 

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

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

  51.     avctx->coded_frame= avcodec_alloc_frame();

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

  53. 

  54.     return 0;

  55. }

  56. 

  57. static av_cold int pcm_encode_close(AVCodecContext *avctx)

  58. {

  59.     av_freep(&avctx->coded_frame);

  60. 

  61.     return 0;

  62. }

  63. 

  64. /**

  65.  * Write PCM samples macro

  66.  * @param type Datatype of native machine format

  67.  * @param endian bytestream_put_xxx() suffix

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

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

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

  71.  * @param shift Bitshift (bits)

  72.  * @param offset Sample value offset

  73.  */

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

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

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

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

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

  79.     }

  80. 

  81. static int pcm_encode_frame(AVCodecContext *avctx, AVPacket *avpkt,

  82.                             const AVFrame *frame, int *got_packet_ptr)

  83. {

  84.     int n, sample_size, v, ret;

  85.     const short *samples;

  86.     unsigned char *dst;

  87.     const uint8_t *srcu8;

  88.     const int16_t *samples_int16_t;

  89.     const int32_t *samples_int32_t;

  90.     const int64_t *samples_int64_t;

  91.     const uint16_t *samples_uint16_t;

  92.     const uint32_t *samples_uint32_t;

  93. 

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

  95.     n           = frame->nb_samples * avctx->channels;

  96.     samples     = (const short *)frame->data[0];

  97. 

  98.     if ((ret = ff_alloc_packet(avpkt, n * sample_size))) {

  99.         av_log(avctx, AV_LOG_ERROR, "Error getting output packet\n");

  100.         return ret;

  101.     }

  102.     dst = avpkt->data;

  103. 

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

  105.     case CODEC_ID_PCM_U32LE:

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

  107.         break;

  108.     case CODEC_ID_PCM_U32BE:

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

  110.         break;

  111.     case CODEC_ID_PCM_S24LE:

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

  113.         break;

  114.     case CODEC_ID_PCM_S24BE:

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

  116.         break;

  117.     case CODEC_ID_PCM_U24LE:

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

  119.         break;

  120.     case CODEC_ID_PCM_U24BE:

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

  122.         break;

  123.     case CODEC_ID_PCM_S24DAUD:

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

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

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

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

  128.             bytestream_put_be24(&dst, tmp);

  129.             samples++;

  130.         }

  131.         break;

  132.     case CODEC_ID_PCM_U16LE:

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

  134.         break;

  135.     case CODEC_ID_PCM_U16BE:

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

  137.         break;

  138.     case CODEC_ID_PCM_S8:

  139.         srcu8 = frame->data[0];

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

  141.             v = *srcu8++;

  142.             *dst++ = v - 128;

  143.         }

  144.         break;

  145. #if HAVE_BIGENDIAN

  146.     case CODEC_ID_PCM_F64LE:

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

  148.         break;

  149.     case CODEC_ID_PCM_S32LE:

  150.     case CODEC_ID_PCM_F32LE:

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

  152.         break;

  153.     case CODEC_ID_PCM_S16LE:

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

  155.         break;

  156.     case CODEC_ID_PCM_F64BE:

  157.     case CODEC_ID_PCM_F32BE:

  158.     case CODEC_ID_PCM_S32BE:

  159.     case CODEC_ID_PCM_S16BE:

  160. #else

  161.     case CODEC_ID_PCM_F64BE:

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

  163.         break;

  164.     case CODEC_ID_PCM_F32BE:

  165.     case CODEC_ID_PCM_S32BE:

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

  167.         break;

  168.     case CODEC_ID_PCM_S16BE:

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

  170.         break;

  171.     case CODEC_ID_PCM_F64LE:

  172.     case CODEC_ID_PCM_F32LE:

  173.     case CODEC_ID_PCM_S32LE:

  174.     case CODEC_ID_PCM_S16LE:

  175. #endif /* HAVE_BIGENDIAN */

  176.     case CODEC_ID_PCM_U8:

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

  178.         dst += n*sample_size;

  179.         break;

  180.     case CODEC_ID_PCM_ALAW:

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

  182.             v = *samples++;

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

  184.         }

  185.         break;

  186.     case CODEC_ID_PCM_MULAW:

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

  188.             v = *samples++;

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

  190.         }

  191.         break;

  192.     default:

  193.         return -1;

  194.     }

  195. 

  196.     avpkt->size = frame->nb_samples * avctx->channels * sample_size;

  197.     *got_packet_ptr = 1;

  198.     return 0;

  199. }

  200. 

  201. typedef struct PCMDecode {

  202.     AVFrame frame;

  203.     short table[256];

  204. } PCMDecode;

  205. 

  206. static av_cold int pcm_decode_init(AVCodecContext * avctx)

  207. {

  208.     PCMDecode *s = avctx->priv_data;

  209.     int i;

  210. 

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

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

  213.         return AVERROR(EINVAL);

  214.     }

  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.     avcodec_get_frame_defaults(&s->frame);

  235.     avctx->coded_frame = &s->frame;

  236. 

  237.     return 0;

  238. }

  239. 

  240. /**

  241.  * Read PCM samples macro

  242.  * @param size Data size of native machine format

  243.  * @param endian bytestream_get_xxx() endian suffix

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

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

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

  247.  * @param shift Bitshift (bits)

  248.  * @param offset Sample value offset

  249.  */

  250. #define DECODE(size, endian, src, dst, n, shift, offset) \

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

  252.         uint##size##_t v = bytestream_get_##endian(&src); \

  253.         AV_WN##size##A(dst, (v - offset) << shift); \

  254.         dst += size / 8; \

  255.     }

  256. 

  257. static int pcm_decode_frame(AVCodecContext *avctx, void *data,

  258.                             int *got_frame_ptr, AVPacket *avpkt)

  259. {

  260.     const uint8_t *src = avpkt->data;

  261.     int buf_size = avpkt->size;

  262.     PCMDecode *s = avctx->priv_data;

  263.     int sample_size, c, n, ret, samples_per_block;

  264.     uint8_t *samples;

  265.     int32_t *dst_int32_t;

  266. 

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

  268. 

  269.     /* av_get_bits_per_sample returns 0 for CODEC_ID_PCM_DVD */

  270.     samples_per_block = 1;

  271.     if (CODEC_ID_PCM_DVD == avctx->codec_id) {

  272.         if (avctx->bits_per_coded_sample != 20 &&

  273.             avctx->bits_per_coded_sample != 24) {

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

  275.             return AVERROR(EINVAL);

  276.         }

  277.         /* 2 samples are interleaved per block in PCM_DVD */

  278.         samples_per_block = 2;

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

  280.     } else if (avctx->codec_id == CODEC_ID_PCM_LXF) {

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

  282.         samples_per_block = 2;

  283.         sample_size = 5;

  284.     }

  285. 

  286.     if (sample_size == 0) {

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

  288.         return AVERROR(EINVAL);

  289.     }

  290. 

  291.     n = avctx->channels * sample_size;

  292. 

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

  294.         if (buf_size < n) {

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

  296.             return -1;

  297.         }else

  298.             buf_size -= buf_size % n;

  299.     }

  300. 

  301.     n = buf_size/sample_size;

  302. 

  303.     /* get output buffer */

  304.     s->frame.nb_samples = n * samples_per_block / avctx->channels;

  305.     if ((ret = avctx->get_buffer(avctx, &s->frame)) < 0) {

  306.         av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");

  307.         return ret;

  308.     }

  309.     samples = s->frame.data[0];

  310. 

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

  312.     case CODEC_ID_PCM_U32LE:

  313.         DECODE(32, le32, src, samples, n, 0, 0x80000000)

  314.         break;

  315.     case CODEC_ID_PCM_U32BE:

  316.         DECODE(32, be32, src, samples, n, 0, 0x80000000)

  317.         break;

  318.     case CODEC_ID_PCM_S24LE:

  319.         DECODE(32, le24, src, samples, n, 8, 0)

  320.         break;

  321.     case CODEC_ID_PCM_S24BE:

  322.         DECODE(32, be24, src, samples, n, 8, 0)

  323.         break;

  324.     case CODEC_ID_PCM_U24LE:

  325.         DECODE(32, le24, src, samples, n, 8, 0x800000)

  326.         break;

  327.     case CODEC_ID_PCM_U24BE:

  328.         DECODE(32, be24, src, samples, n, 8, 0x800000)

  329.         break;

  330.     case CODEC_ID_PCM_S24DAUD:

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

  332.           uint32_t v = bytestream_get_be24(&src);

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

  334.           AV_WN16A(samples, av_reverse[(v >> 8) & 0xff] +

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

  336.           samples += 2;

  337.         }

  338.         break;

  339.     case CODEC_ID_PCM_S16LE_PLANAR:

  340.     {

  341.         const uint8_t *src2[MAX_CHANNELS];

  342.         n /= avctx->channels;

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

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

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

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

  347.                 AV_WN16A(samples, bytestream_get_le16(&src2[c]));

  348.                 samples += 2;

  349.             }

  350.         break;

  351.     }

  352.     case CODEC_ID_PCM_U16LE:

  353.         DECODE(16, le16, src, samples, n, 0, 0x8000)

  354.         break;

  355.     case CODEC_ID_PCM_U16BE:

  356.         DECODE(16, be16, src, samples, n, 0, 0x8000)

  357.         break;

  358.     case CODEC_ID_PCM_S8:

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

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

  361.         }

  362.         break;

  363. #if HAVE_BIGENDIAN

  364.     case CODEC_ID_PCM_F64LE:

  365.         DECODE(64, le64, src, samples, n, 0, 0)

  366.         break;

  367.     case CODEC_ID_PCM_S32LE:

  368.     case CODEC_ID_PCM_F32LE:

  369.         DECODE(32, le32, src, samples, n, 0, 0)

  370.         break;

  371.     case CODEC_ID_PCM_S16LE:

  372.         DECODE(16, le16, src, samples, n, 0, 0)

  373.         break;

  374.     case CODEC_ID_PCM_F64BE:

  375.     case CODEC_ID_PCM_F32BE:

  376.     case CODEC_ID_PCM_S32BE:

  377.     case CODEC_ID_PCM_S16BE:

  378. #else

  379.     case CODEC_ID_PCM_F64BE:

  380.         DECODE(64, be64, src, samples, n, 0, 0)

  381.         break;

  382.     case CODEC_ID_PCM_F32BE:

  383.     case CODEC_ID_PCM_S32BE:

  384.         DECODE(32, be32, src, samples, n, 0, 0)

  385.         break;

  386.     case CODEC_ID_PCM_S16BE:

  387.         DECODE(16, be16, src, samples, n, 0, 0)

  388.         break;

  389.     case CODEC_ID_PCM_F64LE:

  390.     case CODEC_ID_PCM_F32LE:

  391.     case CODEC_ID_PCM_S32LE:

  392.     case CODEC_ID_PCM_S16LE:

  393. #endif /* HAVE_BIGENDIAN */

  394.     case CODEC_ID_PCM_U8:

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

  396.         break;

  397.     case CODEC_ID_PCM_ZORK:

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

  399.             int v = *src++;

  400.             if (v < 128)

  401.                 v = 128 - v;

  402.             *samples++ = v;

  403.         }

  404.         break;

  405.     case CODEC_ID_PCM_ALAW:

  406.     case CODEC_ID_PCM_MULAW:

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

  408.             AV_WN16A(samples, s->table[*src++]);

  409.             samples += 2;

  410.         }

  411.         break;

  412.     case CODEC_ID_PCM_DVD:

  413.     {

  414.         const uint8_t *src8;

  415.         dst_int32_t = (int32_t *)s->frame.data[0];

  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.         }

  441.         break;

  442.     }

  443.     case CODEC_ID_PCM_LXF:

  444.     {

  445.         int i;

  446.         const uint8_t *src8;

  447.         dst_int32_t = (int32_t *)s->frame.data[0];

  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.         break;

  464.     }

  465.     default:

  466.         return -1;

  467.     }

  468. 

  469.     *got_frame_ptr   = 1;

  470.     *(AVFrame *)data = s->frame;

  471. 

  472.     return buf_size;

  473. }

  474. 

  475. #if CONFIG_ENCODERS

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

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

  478.     .name        = #name_,                      \

  479.     .type        = AVMEDIA_TYPE_AUDIO,          \

  480.     .id          = id_,                         \

  481.     .init        = pcm_encode_init,             \

  482.     .encode2     = pcm_encode_frame,            \

  483.     .close       = pcm_encode_close,            \

  484.     .capabilities = CODEC_CAP_VARIABLE_FRAME_SIZE, \

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

  486.     .long_name = NULL_IF_CONFIG_SMALL(long_name_), \

  487. }

  488. #else

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

  490. #endif

  491. 

  492. #if CONFIG_DECODERS

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

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

  495.     .name           = #name_,                   \

  496.     .type           = AVMEDIA_TYPE_AUDIO,       \

  497.     .id             = id_,                      \

  498.     .priv_data_size = sizeof(PCMDecode),        \

  499.     .init           = pcm_decode_init,          \

  500.     .decode         = pcm_decode_frame,         \

  501.     .capabilities   = CODEC_CAP_DR1,            \

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

  503.     .long_name = NULL_IF_CONFIG_SMALL(long_name_), \

  504. }

  505. #else

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

  507. #endif

  508. 

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

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

  511. 

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

  537. PCM_DECODER(CODEC_ID_PCM_ZORK,  AV_SAMPLE_FMT_U8,  pcm_zork,  "PCM Zork");