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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 FFmpeg.

  6.  *

  7.  * FFmpeg 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.  * FFmpeg 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 FFmpeg; 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.     if (!avctx->coded_frame)

  53.         return AVERROR(ENOMEM);

  54. 

  55.     return 0;

  56. }

  57. 

  58. static av_cold int pcm_encode_close(AVCodecContext *avctx)

  59. {

  60.     av_freep(&avctx->coded_frame);

  61. 

  62.     return 0;

  63. }

  64. 

  65. /**

  66.  * Write PCM samples macro

  67.  * @param type Datatype of native machine format

  68.  * @param endian bytestream_put_xxx() suffix

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

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

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

  72.  * @param shift Bitshift (bits)

  73.  * @param offset Sample value offset

  74.  */

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

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

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

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

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

  80.     }

  81. 

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

  83.                             const AVFrame *frame, int *got_packet_ptr)

  84. {

  85.     int n, sample_size, v, ret;

  86.     const short *samples;

  87.     unsigned char *dst;

  88.     const uint8_t *srcu8;

  89.     const int16_t *samples_int16_t;

  90.     const int32_t *samples_int32_t;

  91.     const int64_t *samples_int64_t;

  92.     const uint16_t *samples_uint16_t;

  93.     const uint32_t *samples_uint32_t;

  94. 

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

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

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

  98. 

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

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

  101.         return ret;

  102.     }

  103.     dst = avpkt->data;

  104. 

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

  106.     case CODEC_ID_PCM_U32LE:

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

  108.         break;

  109.     case CODEC_ID_PCM_U32BE:

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

  111.         break;

  112.     case CODEC_ID_PCM_S24LE:

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

  114.         break;

  115.     case CODEC_ID_PCM_S24BE:

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

  117.         break;

  118.     case CODEC_ID_PCM_U24LE:

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

  120.         break;

  121.     case CODEC_ID_PCM_U24BE:

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

  123.         break;

  124.     case CODEC_ID_PCM_S24DAUD:

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

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

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

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

  129.             bytestream_put_be24(&dst, tmp);

  130.             samples++;

  131.         }

  132.         break;

  133.     case CODEC_ID_PCM_U16LE:

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

  135.         break;

  136.     case CODEC_ID_PCM_U16BE:

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

  138.         break;

  139.     case CODEC_ID_PCM_S8:

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

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

  142.             v = *srcu8++;

  143.             *dst++ = v - 128;

  144.         }

  145.         break;

  146. #if HAVE_BIGENDIAN

  147.     case CODEC_ID_PCM_F64LE:

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

  149.         break;

  150.     case CODEC_ID_PCM_S32LE:

  151.     case CODEC_ID_PCM_F32LE:

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

  153.         break;

  154.     case CODEC_ID_PCM_S16LE:

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

  156.         break;

  157.     case CODEC_ID_PCM_F64BE:

  158.     case CODEC_ID_PCM_F32BE:

  159.     case CODEC_ID_PCM_S32BE:

  160.     case CODEC_ID_PCM_S16BE:

  161. #else

  162.     case CODEC_ID_PCM_F64BE:

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

  164.         break;

  165.     case CODEC_ID_PCM_F32BE:

  166.     case CODEC_ID_PCM_S32BE:

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

  168.         break;

  169.     case CODEC_ID_PCM_S16BE:

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

  171.         break;

  172.     case CODEC_ID_PCM_F64LE:

  173.     case CODEC_ID_PCM_F32LE:

  174.     case CODEC_ID_PCM_S32LE:

  175.     case CODEC_ID_PCM_S16LE:

  176. #endif /* HAVE_BIGENDIAN */

  177.     case CODEC_ID_PCM_U8:

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

  179.         dst += n*sample_size;

  180.         break;

  181.     case CODEC_ID_PCM_ALAW:

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

  183.             v = *samples++;

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

  185.         }

  186.         break;

  187.     case CODEC_ID_PCM_MULAW:

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

  189.             v = *samples++;

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

  191.         }

  192.         break;

  193.     default:

  194.         return -1;

  195.     }

  196. 

  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,

  275.                    "PCM DVD unsupported sample depth %i\n",

  276.                    avctx->bits_per_coded_sample);

  277.             return AVERROR(EINVAL);

  278.         }

  279.         /* 2 samples are interleaved per block in PCM_DVD */

  280.         samples_per_block = 2;

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

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

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

  284.         samples_per_block = 2;

  285.         sample_size = 5;

  286.     }

  287. 

  288.     if (sample_size == 0) {

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

  290.         return AVERROR(EINVAL);

  291.     }

  292. 

  293.     n = avctx->channels * sample_size;

  294. 

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

  296.         if (buf_size < n) {

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

  298.             return -1;

  299.         }else

  300.             buf_size -= buf_size % n;

  301.     }

  302. 

  303.     n = buf_size/sample_size;

  304. 

  305.     /* get output buffer */

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

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

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

  309.         return ret;

  310.     }

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

  312. 

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

  314.     case CODEC_ID_PCM_U32LE:

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

  316.         break;

  317.     case CODEC_ID_PCM_U32BE:

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

  319.         break;

  320.     case CODEC_ID_PCM_S24LE:

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

  322.         break;

  323.     case CODEC_ID_PCM_S24BE:

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

  325.         break;

  326.     case CODEC_ID_PCM_U24LE:

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

  328.         break;

  329.     case CODEC_ID_PCM_U24BE:

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

  331.         break;

  332.     case CODEC_ID_PCM_S24DAUD:

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

  334.           uint32_t v = bytestream_get_be24(&src);

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

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

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

  338.           samples += 2;

  339.         }

  340.         break;

  341.     case CODEC_ID_PCM_S16LE_PLANAR:

  342.     {

  343.         int i;

  344.         n /= avctx->channels;

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

  346.             samples = s->frame.data[c];

  347.             for(i=n;i>0;i--) {

  348.                 AV_WN16A(samples, bytestream_get_le16(&src));

  349.                 samples += 2;

  350.             }

  351.         }

  352.         break;

  353.     }

  354.     case CODEC_ID_PCM_U16LE:

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

  356.         break;

  357.     case CODEC_ID_PCM_U16BE:

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

  359.         break;

  360.     case CODEC_ID_PCM_S8:

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

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

  363.         }

  364.         break;

  365. #if HAVE_BIGENDIAN

  366.     case CODEC_ID_PCM_F64LE:

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

  368.         break;

  369.     case CODEC_ID_PCM_S32LE:

  370.     case CODEC_ID_PCM_F32LE:

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

  372.         break;

  373.     case CODEC_ID_PCM_S16LE:

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

  375.         break;

  376.     case CODEC_ID_PCM_F64BE:

  377.     case CODEC_ID_PCM_F32BE:

  378.     case CODEC_ID_PCM_S32BE:

  379.     case CODEC_ID_PCM_S16BE:

  380. #else

  381.     case CODEC_ID_PCM_F64BE:

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

  383.         break;

  384.     case CODEC_ID_PCM_F32BE:

  385.     case CODEC_ID_PCM_S32BE:

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

  387.         break;

  388.     case CODEC_ID_PCM_S16BE:

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

  390.         break;

  391.     case CODEC_ID_PCM_F64LE:

  392.     case CODEC_ID_PCM_F32LE:

  393.     case CODEC_ID_PCM_S32LE:

  394.     case CODEC_ID_PCM_S16LE:

  395. #endif /* HAVE_BIGENDIAN */

  396.     case CODEC_ID_PCM_U8:

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

  398.         break;

  399.     case CODEC_ID_PCM_ZORK:

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

  401.             int v = *src++;

  402.             if (v < 128)

  403.                 v = 128 - v;

  404.             *samples++ = v;

  405.         }

  406.         break;

  407.     case CODEC_ID_PCM_ALAW:

  408.     case CODEC_ID_PCM_MULAW:

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

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

  411.             samples += 2;

  412.         }

  413.         break;

  414.     case CODEC_ID_PCM_DVD:

  415.     {

  416.         const uint8_t *src8;

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

  418.         n /= avctx->channels;

  419.         switch (avctx->bits_per_coded_sample) {

  420.         case 20:

  421.             while (n--) {

  422.                 c = avctx->channels;

  423.                 src8 = src + 4*c;

  424.                 while (c--) {

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

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

  427.                 }

  428.                 src = src8;

  429.             }

  430.             break;

  431.         case 24:

  432.             while (n--) {

  433.                 c = avctx->channels;

  434.                 src8 = src + 4*c;

  435.                 while (c--) {

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

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

  438.                 }

  439.                 src = src8;

  440.             }

  441.             break;

  442.         }

  443.         break;

  444.     }

  445.     case CODEC_ID_PCM_LXF:

  446.     {

  447.         int i;

  448.         n /= avctx->channels;

  449.         //unpack

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

  451.             dst_int32_t = (int32_t *)s->frame.data[c];

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

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

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

  455.                                  ((src[2] & 0xF) << 8) | src[1];

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

  457.                 *dst_int32_t++ = (src[4] << 24) | (src[3] << 16) |

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

  459.                 src += 5;

  460.             }

  461.         }

  462.         break;

  463.     }

  464.     default:

  465.         return -1;

  466.     }

  467. 

  468.     *got_frame_ptr   = 1;

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

  470. 

  471.     return buf_size;

  472. }

  473. 

  474. #if CONFIG_ENCODERS

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

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

  477.     .name        = #name_,                      \

  478.     .type        = AVMEDIA_TYPE_AUDIO,          \

  479.     .id          = id_,                         \

  480.     .init        = pcm_encode_init,             \

  481.     .encode2     = pcm_encode_frame,            \

  482.     .close       = pcm_encode_close,            \

  483.     .capabilities = CODEC_CAP_VARIABLE_FRAME_SIZE, \

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

  485.     .long_name = NULL_IF_CONFIG_SMALL(long_name_), \

  486. }

  487. #else

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

  489. #endif

  490. 

  491. #if CONFIG_DECODERS

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

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

  494.     .name           = #name_,                   \

  495.     .type           = AVMEDIA_TYPE_AUDIO,       \

  496.     .id             = id_,                      \

  497.     .priv_data_size = sizeof(PCMDecode),        \

  498.     .init           = pcm_decode_init,          \

  499.     .decode         = pcm_decode_frame,         \

  500.     .capabilities   = CODEC_CAP_DR1,            \

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

  502.     .long_name = NULL_IF_CONFIG_SMALL(long_name_), \

  503. }

  504. #else

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

  506. #endif

  507. 

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

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

  510. 

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

  512. PCM_CODEC  (CODEC_ID_PCM_ALAW,  AV_SAMPLE_FMT_S16, pcm_alaw, "PCM A-law / G.711 A-law");

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

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

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

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

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

  518. PCM_DECODER(CODEC_ID_PCM_LXF,   AV_SAMPLE_FMT_S32P, pcm_lxf, "PCM signed 20-bit little-endian planar");

  519. PCM_CODEC  (CODEC_ID_PCM_MULAW, AV_SAMPLE_FMT_S16, pcm_mulaw, "PCM mu-law / G.711 mu-law");

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

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

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

  523. PCM_DECODER(CODEC_ID_PCM_S16LE_PLANAR, AV_SAMPLE_FMT_S16P, pcm_s16le_planar, "PCM 16-bit little-endian planar");

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

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

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

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

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

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

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

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

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

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

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

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

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