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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 "libavutil/common.h" /* for av_reverse */

  28. #include "avcodec.h"

  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_packet2(avctx, avpkt, n * sample_size)))

  100.         return ret;

  101.     dst = avpkt->data;

  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 = frame->data[0];

  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_ALAW:

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

  181.             v      = *samples++;

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

  183.         }

  184.         break;

  185.     case CODEC_ID_PCM_MULAW:

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

  187.             v      = *samples++;

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

  189.         }

  190.         break;

  191.     default:

  192.         return -1;

  193.     }

  194. 

  195.     *got_packet_ptr = 1;

  196.     return 0;

  197. }

  198. 

  199. typedef struct PCMDecode {

  200.     AVFrame frame;

  201.     short   table[256];

  202. } PCMDecode;

  203. 

  204. static av_cold int pcm_decode_init(AVCodecContext *avctx)

  205. {

  206.     PCMDecode *s = avctx->priv_data;

  207.     int i;

  208. 

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

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

  211.         return AVERROR(EINVAL);

  212.     }

  213. 

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

  215.     case CODEC_ID_PCM_ALAW:

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

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

  218.         break;

  219.     case CODEC_ID_PCM_MULAW:

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

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

  222.         break;

  223.     default:

  224.         break;

  225.     }

  226. 

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

  228. 

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

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

  231. 

  232.     avcodec_get_frame_defaults(&s->frame);

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

  234. 

  235.     return 0;

  236. }

  237. 

  238. /**

  239.  * Read PCM samples macro

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

  241.  * @param endian bytestream_get_xxx() endian suffix

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

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

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

  245.  * @param shift  Bitshift (bits)

  246.  * @param offset Sample value offset

  247.  */

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

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

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

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

  252.         dst += size / 8;                                                \

  253.     }

  254. 

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

  256.                             int *got_frame_ptr, AVPacket *avpkt)

  257. {

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

  259.     int buf_size       = avpkt->size;

  260.     PCMDecode *s       = avctx->priv_data;

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

  262.     uint8_t *samples;

  263.     int32_t *dst_int32_t;

  264. 

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

  266. 

  267.     /* av_get_bits_per_sample returns 0 for CODEC_ID_PCM_DVD */

  268.     samples_per_block = 1;

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

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

  271.             avctx->bits_per_coded_sample != 24) {

  272.             av_log(avctx, AV_LOG_ERROR,

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

  274.                    avctx->bits_per_coded_sample);

  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.         int i;

  342.         n /= avctx->channels;

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

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

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

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

  347.                 samples += 2;

  348.             }

  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.         break;

  362. #if HAVE_BIGENDIAN

  363.     case CODEC_ID_PCM_F64LE:

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

  365.         break;

  366.     case CODEC_ID_PCM_S32LE:

  367.     case CODEC_ID_PCM_F32LE:

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

  369.         break;

  370.     case CODEC_ID_PCM_S16LE:

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

  372.         break;

  373.     case CODEC_ID_PCM_F64BE:

  374.     case CODEC_ID_PCM_F32BE:

  375.     case CODEC_ID_PCM_S32BE:

  376.     case CODEC_ID_PCM_S16BE:

  377. #else

  378.     case CODEC_ID_PCM_F64BE:

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

  380.         break;

  381.     case CODEC_ID_PCM_F32BE:

  382.     case CODEC_ID_PCM_S32BE:

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

  384.         break;

  385.     case CODEC_ID_PCM_S16BE:

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

  387.         break;

  388.     case CODEC_ID_PCM_F64LE:

  389.     case CODEC_ID_PCM_F32LE:

  390.     case CODEC_ID_PCM_S32LE:

  391.     case CODEC_ID_PCM_S16LE:

  392. #endif /* HAVE_BIGENDIAN */

  393.     case CODEC_ID_PCM_U8:

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

  395.         break;

  396.     case CODEC_ID_PCM_ZORK:

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

  398.             int v = *src++;

  399.             if (v < 128)

  400.                 v = 128 - v;

  401.             *samples++ = v;

  402.         }

  403.         break;

  404.     case CODEC_ID_PCM_ALAW:

  405.     case CODEC_ID_PCM_MULAW:

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

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

  408.             samples += 2;

  409.         }

  410.         break;

  411.     case CODEC_ID_PCM_DVD:

  412.     {

  413.         const uint8_t *src8;

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

  415.         n /= avctx->channels;

  416.         switch (avctx->bits_per_coded_sample) {

  417.         case 20:

  418.             while (n--) {

  419.                 c    = avctx->channels;

  420.                 src8 = src + 4 * c;

  421.                 while (c--) {

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

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

  424.                 }

  425.                 src = src8;

  426.             }

  427.             break;

  428.         case 24:

  429.             while (n--) {

  430.                 c    = avctx->channels;

  431.                 src8 = src + 4 * c;

  432.                 while (c--) {

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

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

  435.                 }

  436.                 src = src8;

  437.             }

  438.             break;

  439.         }

  440.         break;

  441.     }

  442.     case CODEC_ID_PCM_LXF:

  443.     {

  444.         int i;

  445.         n /= avctx->channels;

  446.         //unpack

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

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

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

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

  451.                 *dst_int32_t++ = (src[2] << 28) |

  452.                                  (src[1] << 20) |

  453.                                  (src[0] << 12) |

  454.                                  ((src[2] & 0xF) << 8) |

  455.                                  src[1];

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

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

  458.                                  (src[3] << 16) |

  459.                                  ((src[2] & 0xF0) << 8) |

  460.                                  (src[4] << 4) |

  461.                                  (src[3] >> 4);

  462.                 src += 5;

  463.             }

  464.         }

  465.         break;

  466.     }

  467.     default:

  468.         return -1;

  469.     }

  470. 

  471.     *got_frame_ptr   = 1;

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

  473. 

  474.     return buf_size;

  475. }

  476. 

  477. #if CONFIG_ENCODERS

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

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

  480.     .name         = #name_,                                                 \

  481.     .type         = AVMEDIA_TYPE_AUDIO,                                     \

  482.     .id           = id_,                                                    \

  483.     .init         = pcm_encode_init,                                        \

  484.     .encode2      = pcm_encode_frame,                                       \

  485.     .close        = pcm_encode_close,                                       \

  486.     .capabilities = CODEC_CAP_VARIABLE_FRAME_SIZE,                          \

  487.     .sample_fmts  = (const enum AVSampleFormat[]){ sample_fmt_,             \

  488.                                                    AV_SAMPLE_FMT_NONE },    \

  489.     .long_name    = NULL_IF_CONFIG_SMALL(long_name_),                       \

  490. }

  491. #else

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

  493. #endif

  494. 

  495. #if CONFIG_DECODERS

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

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

  498.     .name           = #name_,                                               \

  499.     .type           = AVMEDIA_TYPE_AUDIO,                                   \

  500.     .id             = id_,                                                  \

  501.     .priv_data_size = sizeof(PCMDecode),                                    \

  502.     .init           = pcm_decode_init,                                      \

  503.     .decode         = pcm_decode_frame,                                     \

  504.     .capabilities   = CODEC_CAP_DR1,                                        \

  505.     .sample_fmts    = (const enum AVSampleFormat[]){ sample_fmt_,           \

  506.                                                      AV_SAMPLE_FMT_NONE },  \

  507.     .long_name      = NULL_IF_CONFIG_SMALL(long_name_),                     \

  508. }

  509. #else

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

  511. #endif

  512. 

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

  514.     PCM_ENCODER(id, sample_fmt_, name, long_name_);                     \

  515.     PCM_DECODER(id, sample_fmt_, name, long_name_)

  516. 

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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