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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 "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->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_packet(avpkt, n * sample_size))) {

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

  102.         return ret;

  103.     }

  104.     dst = avpkt->data;

  105. 

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

  107.     case CODEC_ID_PCM_U32LE:

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

  109.         break;

  110.     case CODEC_ID_PCM_U32BE:

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

  112.         break;

  113.     case CODEC_ID_PCM_S24LE:

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

  115.         break;

  116.     case CODEC_ID_PCM_S24BE:

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

  118.         break;

  119.     case CODEC_ID_PCM_U24LE:

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

  121.         break;

  122.     case CODEC_ID_PCM_U24BE:

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

  124.         break;

  125.     case CODEC_ID_PCM_S24DAUD:

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

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

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

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

  130.             bytestream_put_be24(&dst, tmp);

  131.             samples++;

  132.         }

  133.         break;

  134.     case CODEC_ID_PCM_U16LE:

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

  136.         break;

  137.     case CODEC_ID_PCM_U16BE:

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

  139.         break;

  140.     case CODEC_ID_PCM_S8:

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

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

  143.             v      = *srcu8++;

  144.             *dst++ = v - 128;

  145.         }

  146.         break;

  147. #if HAVE_BIGENDIAN

  148.     case CODEC_ID_PCM_F64LE:

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

  150.         break;

  151.     case CODEC_ID_PCM_S32LE:

  152.     case CODEC_ID_PCM_F32LE:

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

  154.         break;

  155.     case CODEC_ID_PCM_S16LE:

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

  157.         break;

  158.     case CODEC_ID_PCM_F64BE:

  159.     case CODEC_ID_PCM_F32BE:

  160.     case CODEC_ID_PCM_S32BE:

  161.     case CODEC_ID_PCM_S16BE:

  162. #else

  163.     case CODEC_ID_PCM_F64BE:

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

  165.         break;

  166.     case CODEC_ID_PCM_F32BE:

  167.     case CODEC_ID_PCM_S32BE:

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

  169.         break;

  170.     case CODEC_ID_PCM_S16BE:

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

  172.         break;

  173.     case CODEC_ID_PCM_F64LE:

  174.     case CODEC_ID_PCM_F32LE:

  175.     case CODEC_ID_PCM_S32LE:

  176.     case CODEC_ID_PCM_S16LE:

  177. #endif /* HAVE_BIGENDIAN */

  178.     case CODEC_ID_PCM_U8:

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

  180.         dst += n * sample_size;

  181.         break;

  182.     case CODEC_ID_PCM_ALAW:

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

  184.             v      = *samples++;

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

  186.         }

  187.         break;

  188.     case CODEC_ID_PCM_MULAW:

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

  190.             v      = *samples++;

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

  192.         }

  193.         break;

  194.     default:

  195.         return -1;

  196.     }

  197. 

  198.     *got_packet_ptr = 1;

  199.     return 0;

  200. }

  201. 

  202. typedef struct PCMDecode {

  203.     AVFrame frame;

  204.     short   table[256];

  205. } PCMDecode;

  206. 

  207. static av_cold int pcm_decode_init(AVCodecContext *avctx)

  208. {

  209.     PCMDecode *s = avctx->priv_data;

  210.     int i;

  211. 

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

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

  214.         return AVERROR(EINVAL);

  215.     }

  216. 

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

  218.     case CODEC_ID_PCM_ALAW:

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

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

  221.         break;

  222.     case CODEC_ID_PCM_MULAW:

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

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

  225.         break;

  226.     default:

  227.         break;

  228.     }

  229. 

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

  231. 

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

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

  234. 

  235.     avcodec_get_frame_defaults(&s->frame);

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

  237. 

  238.     return 0;

  239. }

  240. 

  241. /**

  242.  * Read PCM samples macro

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

  244.  * @param endian bytestream_get_xxx() endian suffix

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

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

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

  248.  * @param shift  Bitshift (bits)

  249.  * @param offset Sample value offset

  250.  */

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

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

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

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

  255.         dst += size / 8;                                                \

  256.     }

  257. 

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

  259.                             int *got_frame_ptr, AVPacket *avpkt)

  260. {

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

  262.     int buf_size       = avpkt->size;

  263.     PCMDecode *s       = avctx->priv_data;

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

  265.     uint8_t *samples;

  266.     int32_t *dst_int32_t;

  267. 

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

  269. 

  270.     /* av_get_bits_per_sample returns 0 for CODEC_ID_PCM_DVD */

  271.     samples_per_block = 1;

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

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

  274.             avctx->bits_per_coded_sample != 24) {

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

  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 == 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, "invalid PCM packet\n");

  297.             return -1;

  298.         } else

  299.             buf_size -= buf_size % n;

  300.     }

  301. 

  302.     n = buf_size / sample_size;

  303. 

  304.     /* get output buffer */

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

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

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

  308.         return ret;

  309.     }

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

  311. 

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

  313.     case CODEC_ID_PCM_U32LE:

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

  315.         break;

  316.     case CODEC_ID_PCM_U32BE:

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

  318.         break;

  319.     case CODEC_ID_PCM_S24LE:

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

  321.         break;

  322.     case CODEC_ID_PCM_S24BE:

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

  324.         break;

  325.     case CODEC_ID_PCM_U24LE:

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

  327.         break;

  328.     case CODEC_ID_PCM_U24BE:

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

  330.         break;

  331.     case CODEC_ID_PCM_S24DAUD:

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

  333.             uint32_t v = bytestream_get_be24(&src);

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

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

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

  337.             samples += 2;

  338.         }

  339.         break;

  340.     case CODEC_ID_PCM_S16LE_PLANAR:

  341.     {

  342.         const uint8_t *src2[MAX_CHANNELS];

  343.         n /= avctx->channels;

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

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

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

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

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

  349.                 samples += 2;

  350.             }

  351.         break;

  352.     }

  353.     case CODEC_ID_PCM_U16LE:

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

  355.         break;

  356.     case CODEC_ID_PCM_U16BE:

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

  358.         break;

  359.     case CODEC_ID_PCM_S8:

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

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

  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-planarize

  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)        |

  454.                                  (src8[1] << 20)        |

  455.                                  (src8[0] << 12)        |

  456.                                  ((src8[2] & 0xF) << 8) |

  457.                                  src8[1];

  458.             }

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

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

  461.                 *dst_int32_t++ = (src8[4] << 24)         |

  462.                                  (src8[3] << 16)         |

  463.                                  ((src8[2] & 0xF0) << 8) |

  464.                                  (src8[4] << 4)          |

  465.                                  (src8[3] >> 4);

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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