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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 AV_CODEC_ID_PCM_ALAW:

  40.         pcm_alaw_tableinit();

  41.         break;

  42.     case AV_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->bit_rate              = avctx->block_align * avctx->sample_rate * 8;

  52.     avctx->coded_frame           = avcodec_alloc_frame();

  53.     if (!avctx->coded_frame)

  54.         return AVERROR(ENOMEM);

  55. 

  56.     return 0;

  57. }

  58. 

  59. static av_cold int pcm_encode_close(AVCodecContext *avctx)

  60. {

  61.     av_freep(&avctx->coded_frame);

  62. 

  63.     return 0;

  64. }

  65. 

  66. /**

  67.  * Write PCM samples macro

  68.  * @param type   Datatype of native machine format

  69.  * @param endian bytestream_put_xxx() suffix

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

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

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

  73.  * @param shift  Bitshift (bits)

  74.  * @param offset Sample value offset

  75.  */

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

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

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

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

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

  81.     }

  82. 

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

  84.                             const AVFrame *frame, int *got_packet_ptr)

  85. {

  86.     int n, sample_size, v, ret;

  87.     const short *samples;

  88.     unsigned char *dst;

  89.     const uint8_t *srcu8;

  90.     const int16_t *samples_int16_t;

  91.     const int32_t *samples_int32_t;

  92.     const int64_t *samples_int64_t;

  93.     const uint16_t *samples_uint16_t;

  94.     const uint32_t *samples_uint32_t;

  95. 

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

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

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

  99. 

  100.     if ((ret = ff_alloc_packet2(avctx, avpkt, n * sample_size)))

  101.         return ret;

  102.     dst = avpkt->data;

  103. 

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

  105.     case AV_CODEC_ID_PCM_U32LE:

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

  107.         break;

  108.     case AV_CODEC_ID_PCM_U32BE:

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

  110.         break;

  111.     case AV_CODEC_ID_PCM_S24LE:

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

  113.         break;

  114.     case AV_CODEC_ID_PCM_S24BE:

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

  116.         break;

  117.     case AV_CODEC_ID_PCM_U24LE:

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

  119.         break;

  120.     case AV_CODEC_ID_PCM_U24BE:

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

  122.         break;

  123.     case AV_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 AV_CODEC_ID_PCM_U16LE:

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

  134.         break;

  135.     case AV_CODEC_ID_PCM_U16BE:

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

  137.         break;

  138.     case AV_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 AV_CODEC_ID_PCM_F64LE:

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

  148.         break;

  149.     case AV_CODEC_ID_PCM_S32LE:

  150.     case AV_CODEC_ID_PCM_F32LE:

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

  152.         break;

  153.     case AV_CODEC_ID_PCM_S16LE:

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

  155.         break;

  156.     case AV_CODEC_ID_PCM_F64BE:

  157.     case AV_CODEC_ID_PCM_F32BE:

  158.     case AV_CODEC_ID_PCM_S32BE:

  159.     case AV_CODEC_ID_PCM_S16BE:

  160. #else

  161.     case AV_CODEC_ID_PCM_F64BE:

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

  163.         break;

  164.     case AV_CODEC_ID_PCM_F32BE:

  165.     case AV_CODEC_ID_PCM_S32BE:

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

  167.         break;

  168.     case AV_CODEC_ID_PCM_S16BE:

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

  170.         break;

  171.     case AV_CODEC_ID_PCM_F64LE:

  172.     case AV_CODEC_ID_PCM_F32LE:

  173.     case AV_CODEC_ID_PCM_S32LE:

  174.     case AV_CODEC_ID_PCM_S16LE:

  175. #endif /* HAVE_BIGENDIAN */

  176.     case AV_CODEC_ID_PCM_U8:

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

  178.         dst += n * sample_size;

  179.         break;

  180.     case AV_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 AV_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.     *got_packet_ptr = 1;

  197.     return 0;

  198. }

  199. 

  200. typedef struct PCMDecode {

  201.     AVFrame frame;

  202.     short   table[256];

  203. } PCMDecode;

  204. 

  205. static av_cold int pcm_decode_init(AVCodecContext *avctx)

  206. {

  207.     PCMDecode *s = avctx->priv_data;

  208.     int i;

  209. 

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

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

  212.         return AVERROR(EINVAL);

  213.     }

  214. 

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

  216.     case AV_CODEC_ID_PCM_ALAW:

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

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

  219.         break;

  220.     case AV_CODEC_ID_PCM_MULAW:

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

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

  223.         break;

  224.     default:

  225.         break;

  226.     }

  227. 

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

  229. 

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

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

  232. 

  233.     avcodec_get_frame_defaults(&s->frame);

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

  235. 

  236.     return 0;

  237. }

  238. 

  239. /**

  240.  * Read PCM samples macro

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

  242.  * @param endian bytestream_get_xxx() endian suffix

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

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

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

  246.  * @param shift  Bitshift (bits)

  247.  * @param offset Sample value offset

  248.  */

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

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

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

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

  253.         dst += size / 8;                                                \

  254.     }

  255. 

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

  257.                             int *got_frame_ptr, AVPacket *avpkt)

  258. {

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

  260.     int buf_size       = avpkt->size;

  261.     PCMDecode *s       = avctx->priv_data;

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

  263.     uint8_t *samples;

  264.     int32_t *dst_int32_t;

  265. 

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

  267. 

  268.     /* av_get_bits_per_sample returns 0 for AV_CODEC_ID_PCM_DVD */

  269.     samples_per_block = 1;

  270.     if (AV_CODEC_ID_PCM_DVD == avctx->codec_id) {

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

  272.             avctx->bits_per_coded_sample != 24) {

  273.             av_log(avctx, AV_LOG_ERROR,

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

  275.                    avctx->bits_per_coded_sample);

  276.             return AVERROR(EINVAL);

  277.         }

  278.         /* 2 samples are interleaved per block in PCM_DVD */

  279.         samples_per_block = 2;

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

  281.     } else if (avctx->codec_id == AV_CODEC_ID_PCM_LXF) {

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

  283.         samples_per_block = 2;

  284.         sample_size       = 5;

  285.     }

  286. 

  287.     if (sample_size == 0) {

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

  289.         return AVERROR(EINVAL);

  290.     }

  291. 

  292.     n = avctx->channels * sample_size;

  293. 

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

  295.         if (buf_size < n) {

  296.             av_log(avctx, AV_LOG_ERROR,

  297.                    "Invalid PCM packet, data has size %d but at least a size of %d was expected\n",

  298.                    buf_size, n);

  299.             return AVERROR_INVALIDDATA;

  300.         } else

  301.             buf_size -= buf_size % n;

  302.     }

  303. 

  304.     n = buf_size / sample_size;

  305. 

  306.     /* get output buffer */

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

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

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

  310.         return ret;

  311.     }

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

  313. 

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

  315.     case AV_CODEC_ID_PCM_U32LE:

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

  317.         break;

  318.     case AV_CODEC_ID_PCM_U32BE:

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

  320.         break;

  321.     case AV_CODEC_ID_PCM_S24LE:

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

  323.         break;

  324.     case AV_CODEC_ID_PCM_S24BE:

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

  326.         break;

  327.     case AV_CODEC_ID_PCM_U24LE:

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

  329.         break;

  330.     case AV_CODEC_ID_PCM_U24BE:

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

  332.         break;

  333.     case AV_CODEC_ID_PCM_S24DAUD:

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

  335.             uint32_t v = bytestream_get_be24(&src);

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

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

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

  339.             samples += 2;

  340.         }

  341.         break;

  342.     case AV_CODEC_ID_PCM_S16LE_PLANAR:

  343.     {

  344.         int i;

  345.         n /= avctx->channels;

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

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

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

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

  350.                 samples += 2;

  351.             }

  352.         }

  353.         break;

  354.     }

  355.     case AV_CODEC_ID_PCM_U16LE:

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

  357.         break;

  358.     case AV_CODEC_ID_PCM_U16BE:

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

  360.         break;

  361.     case AV_CODEC_ID_PCM_S8:

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

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

  364.         break;

  365. #if HAVE_BIGENDIAN

  366.     case AV_CODEC_ID_PCM_F64LE:

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

  368.         break;

  369.     case AV_CODEC_ID_PCM_S32LE:

  370.     case AV_CODEC_ID_PCM_F32LE:

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

  372.         break;

  373.     case AV_CODEC_ID_PCM_S16LE:

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

  375.         break;

  376.     case AV_CODEC_ID_PCM_F64BE:

  377.     case AV_CODEC_ID_PCM_F32BE:

  378.     case AV_CODEC_ID_PCM_S32BE:

  379.     case AV_CODEC_ID_PCM_S16BE:

  380. #else

  381.     case AV_CODEC_ID_PCM_F64BE:

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

  383.         break;

  384.     case AV_CODEC_ID_PCM_F32BE:

  385.     case AV_CODEC_ID_PCM_S32BE:

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

  387.         break;

  388.     case AV_CODEC_ID_PCM_S16BE:

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

  390.         break;

  391.     case AV_CODEC_ID_PCM_F64LE:

  392.     case AV_CODEC_ID_PCM_F32LE:

  393.     case AV_CODEC_ID_PCM_S32LE:

  394.     case AV_CODEC_ID_PCM_S16LE:

  395. #endif /* HAVE_BIGENDIAN */

  396.     case AV_CODEC_ID_PCM_U8:

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

  398.         break;

  399.     case AV_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 AV_CODEC_ID_PCM_ALAW:

  408.     case AV_CODEC_ID_PCM_MULAW:

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

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

  411.             samples += 2;

  412.         }

  413.         break;

  414.     case AV_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 AV_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) |

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

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

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

  458.                                  src[1];

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

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

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

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

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

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

  465.                 src += 5;

  466.             }

  467.         }

  468.         break;

  469.     }

  470.     default:

  471.         return -1;

  472.     }

  473. 

  474.     *got_frame_ptr   = 1;

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

  476. 

  477.     return buf_size;

  478. }

  479. 

  480. #if CONFIG_ENCODERS

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

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

  483.     .name         = #name_,                                                 \

  484.     .type         = AVMEDIA_TYPE_AUDIO,                                     \

  485.     .id           = id_,                                                    \

  486.     .init         = pcm_encode_init,                                        \

  487.     .encode2      = pcm_encode_frame,                                       \

  488.     .close        = pcm_encode_close,                                       \

  489.     .capabilities = CODEC_CAP_VARIABLE_FRAME_SIZE,                          \

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

  491.                                                    AV_SAMPLE_FMT_NONE },    \

  492.     .long_name    = NULL_IF_CONFIG_SMALL(long_name_),                       \

  493. }

  494. #else

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

  496. #endif

  497. 

  498. #if CONFIG_DECODERS

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

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

  501.     .name           = #name_,                                               \

  502.     .type           = AVMEDIA_TYPE_AUDIO,                                   \

  503.     .id             = id_,                                                  \

  504.     .priv_data_size = sizeof(PCMDecode),                                    \

  505.     .init           = pcm_decode_init,                                      \

  506.     .decode         = pcm_decode_frame,                                     \

  507.     .capabilities   = CODEC_CAP_DR1,                                        \

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

  509.                                                      AV_SAMPLE_FMT_NONE },  \

  510.     .long_name      = NULL_IF_CONFIG_SMALL(long_name_),                     \

  511. }

  512. #else

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

  514. #endif

  515. 

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

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

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

  519. 

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

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

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

  523. PCM_CODEC  (AV_CODEC_ID_PCM_F32BE,        AV_SAMPLE_FMT_FLT, pcm_f32be,        "PCM 32-bit floating point big-endian");

  524. PCM_CODEC  (AV_CODEC_ID_PCM_F32LE,        AV_SAMPLE_FMT_FLT, pcm_f32le,        "PCM 32-bit floating point little-endian");

  525. PCM_CODEC  (AV_CODEC_ID_PCM_F64BE,        AV_SAMPLE_FMT_DBL, pcm_f64be,        "PCM 64-bit floating point big-endian");

  526. PCM_CODEC  (AV_CODEC_ID_PCM_F64LE,        AV_SAMPLE_FMT_DBL, pcm_f64le,        "PCM 64-bit floating point little-endian");

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

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

  529. PCM_CODEC  (AV_CODEC_ID_PCM_S8,           AV_SAMPLE_FMT_U8,  pcm_s8,           "PCM signed 8-bit");

  530. PCM_CODEC  (AV_CODEC_ID_PCM_S16BE,        AV_SAMPLE_FMT_S16, pcm_s16be,        "PCM signed 16-bit big-endian");

  531. PCM_CODEC  (AV_CODEC_ID_PCM_S16LE,        AV_SAMPLE_FMT_S16, pcm_s16le,        "PCM signed 16-bit little-endian");

  532. PCM_DECODER(AV_CODEC_ID_PCM_S16LE_PLANAR, AV_SAMPLE_FMT_S16P,pcm_s16le_planar, "PCM 16-bit little-endian planar");

  533. PCM_CODEC  (AV_CODEC_ID_PCM_S24BE,        AV_SAMPLE_FMT_S32, pcm_s24be,        "PCM signed 24-bit big-endian");

  534. PCM_CODEC  (AV_CODEC_ID_PCM_S24DAUD,      AV_SAMPLE_FMT_S16, pcm_s24daud,      "PCM D-Cinema audio signed 24-bit");

  535. PCM_CODEC  (AV_CODEC_ID_PCM_S24LE,        AV_SAMPLE_FMT_S32, pcm_s24le,        "PCM signed 24-bit little-endian");

  536. PCM_CODEC  (AV_CODEC_ID_PCM_S32BE,        AV_SAMPLE_FMT_S32, pcm_s32be,        "PCM signed 32-bit big-endian");

  537. PCM_CODEC  (AV_CODEC_ID_PCM_S32LE,        AV_SAMPLE_FMT_S32, pcm_s32le,        "PCM signed 32-bit little-endian");

  538. PCM_CODEC  (AV_CODEC_ID_PCM_U8,           AV_SAMPLE_FMT_U8,  pcm_u8,           "PCM unsigned 8-bit");

  539. PCM_CODEC  (AV_CODEC_ID_PCM_U16BE,        AV_SAMPLE_FMT_S16, pcm_u16be,        "PCM unsigned 16-bit big-endian");

  540. PCM_CODEC  (AV_CODEC_ID_PCM_U16LE,        AV_SAMPLE_FMT_S16, pcm_u16le,        "PCM unsigned 16-bit little-endian");

  541. PCM_CODEC  (AV_CODEC_ID_PCM_U24BE,        AV_SAMPLE_FMT_S32, pcm_u24be,        "PCM unsigned 24-bit big-endian");

  542. PCM_CODEC  (AV_CODEC_ID_PCM_U24LE,        AV_SAMPLE_FMT_S32, pcm_u24le,        "PCM unsigned 24-bit little-endian");

  543. PCM_CODEC  (AV_CODEC_ID_PCM_U32BE,        AV_SAMPLE_FMT_S32, pcm_u32be,        "PCM unsigned 32-bit big-endian");

  544. PCM_CODEC  (AV_CODEC_ID_PCM_U32LE,        AV_SAMPLE_FMT_S32, pcm_u32le,        "PCM unsigned 32-bit little-endian");

  545. PCM_DECODER(AV_CODEC_ID_PCM_ZORK,         AV_SAMPLE_FMT_U8,  pcm_zork,         "PCM Zork");