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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/attributes.h"

  28. #include "libavutil/float_dsp.h"

  29. #include "avcodec.h"

  30. #include "bytestream.h"

  31. #include "internal.h"

  32. #include "mathops.h"

  33. #include "pcm_tablegen.h"

  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 * 8LL * avctx->sample_rate;

  52. 

  53.     return 0;

  54. }

  55. 

  56. /**

  57.  * Write PCM samples macro

  58.  * @param type   Datatype of native machine format

  59.  * @param endian bytestream_put_xxx() suffix

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

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

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

  63.  * @param shift  Bitshift (bits)

  64.  * @param offset Sample value offset

  65.  */

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

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

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

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

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

  71.     }

  72. 

  73. #define ENCODE_PLANAR(type, endian, dst, n, shift, offset)              \

  74.     n /= avctx->channels;                                               \

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

  76.         int i;                                                          \

  77.         samples_ ## type = (const type *) frame->extended_data[c];      \

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

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

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

  81.         }                                                               \

  82.     }

  83. 

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

  85.                             const AVFrame *frame, int *got_packet_ptr)

  86. {

  87.     int n, c, sample_size, v, ret;

  88.     const short *samples;

  89.     unsigned char *dst;

  90.     const uint8_t *samples_uint8_t;

  91.     const int16_t *samples_int16_t;

  92.     const int32_t *samples_int32_t;

  93.     const int64_t *samples_int64_t;

  94.     const uint16_t *samples_uint16_t;

  95.     const uint32_t *samples_uint32_t;

  96. 

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

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

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

  100. 

  101.     if ((ret = ff_alloc_packet2(avctx, avpkt, n * sample_size, n * sample_size)) < 0)

  102.         return ret;

  103.     dst = avpkt->data;

  104. 

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

  106.     case AV_CODEC_ID_PCM_U32LE:

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

  108.         break;

  109.     case AV_CODEC_ID_PCM_U32BE:

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

  111.         break;

  112.     case AV_CODEC_ID_PCM_S24LE:

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

  114.         break;

  115.     case AV_CODEC_ID_PCM_S24LE_PLANAR:

  116.         ENCODE_PLANAR(int32_t, le24, dst, n, 8, 0)

  117.         break;

  118.     case AV_CODEC_ID_PCM_S24BE:

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

  120.         break;

  121.     case AV_CODEC_ID_PCM_U24LE:

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

  123.         break;

  124.     case AV_CODEC_ID_PCM_U24BE:

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

  126.         break;

  127.     case AV_CODEC_ID_PCM_S24DAUD:

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

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

  130.                            (ff_reverse[*samples & 0xff] << 8);

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

  132.             bytestream_put_be24(&dst, tmp);

  133.             samples++;

  134.         }

  135.         break;

  136.     case AV_CODEC_ID_PCM_U16LE:

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

  138.         break;

  139.     case AV_CODEC_ID_PCM_U16BE:

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

  141.         break;

  142.     case AV_CODEC_ID_PCM_S8:

  143.         ENCODE(uint8_t, byte, samples, dst, n, 0, -128)

  144.         break;

  145.     case AV_CODEC_ID_PCM_S8_PLANAR:

  146.         ENCODE_PLANAR(uint8_t, byte, dst, n, 0, -128)

  147.         break;

  148. #if HAVE_BIGENDIAN

  149.     case AV_CODEC_ID_PCM_S64LE:

  150.     case AV_CODEC_ID_PCM_F64LE:

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

  152.         break;

  153.     case AV_CODEC_ID_PCM_S32LE:

  154.     case AV_CODEC_ID_PCM_F32LE:

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

  156.         break;

  157.     case AV_CODEC_ID_PCM_S32LE_PLANAR:

  158.         ENCODE_PLANAR(int32_t, le32, dst, n, 0, 0)

  159.         break;

  160.     case AV_CODEC_ID_PCM_S16LE:

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

  162.         break;

  163.     case AV_CODEC_ID_PCM_S16LE_PLANAR:

  164.         ENCODE_PLANAR(int16_t, le16, dst, n, 0, 0)

  165.         break;

  166.     case AV_CODEC_ID_PCM_F64BE:

  167.     case AV_CODEC_ID_PCM_F32BE:

  168.     case AV_CODEC_ID_PCM_S64BE:

  169.     case AV_CODEC_ID_PCM_S32BE:

  170.     case AV_CODEC_ID_PCM_S16BE:

  171. #else

  172.     case AV_CODEC_ID_PCM_S64BE:

  173.     case AV_CODEC_ID_PCM_F64BE:

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

  175.         break;

  176.     case AV_CODEC_ID_PCM_F32BE:

  177.     case AV_CODEC_ID_PCM_S32BE:

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

  179.         break;

  180.     case AV_CODEC_ID_PCM_S16BE:

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

  182.         break;

  183.     case AV_CODEC_ID_PCM_S16BE_PLANAR:

  184.         ENCODE_PLANAR(int16_t, be16, dst, n, 0, 0)

  185.         break;

  186.     case AV_CODEC_ID_PCM_F64LE:

  187.     case AV_CODEC_ID_PCM_F32LE:

  188.     case AV_CODEC_ID_PCM_S64LE:

  189.     case AV_CODEC_ID_PCM_S32LE:

  190.     case AV_CODEC_ID_PCM_S16LE:

  191. #endif /* HAVE_BIGENDIAN */

  192.     case AV_CODEC_ID_PCM_U8:

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

  194.         break;

  195. #if HAVE_BIGENDIAN

  196.     case AV_CODEC_ID_PCM_S16BE_PLANAR:

  197. #else

  198.     case AV_CODEC_ID_PCM_S16LE_PLANAR:

  199.     case AV_CODEC_ID_PCM_S32LE_PLANAR:

  200. #endif /* HAVE_BIGENDIAN */

  201.         n /= avctx->channels;

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

  203.             const uint8_t *src = frame->extended_data[c];

  204.             bytestream_put_buffer(&dst, src, n * sample_size);

  205.         }

  206.         break;

  207.     case AV_CODEC_ID_PCM_ALAW:

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

  209.             v      = *samples++;

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

  211.         }

  212.         break;

  213.     case AV_CODEC_ID_PCM_MULAW:

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

  215.             v      = *samples++;

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

  217.         }

  218.         break;

  219.     default:

  220.         return -1;

  221.     }

  222. 

  223.     *got_packet_ptr = 1;

  224.     return 0;

  225. }

  226. 

  227. typedef struct PCMDecode {

  228.     short   table[256];

  229.     AVFloatDSPContext *fdsp;

  230.     float   scale;

  231. } PCMDecode;

  232. 

  233. static av_cold int pcm_decode_init(AVCodecContext *avctx)

  234. {

  235.     PCMDecode *s = avctx->priv_data;

  236.     int i;

  237. 

  238.     if (avctx->channels <= 0) {

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

  240.         return AVERROR(EINVAL);

  241.     }

  242. 

  243.     switch (avctx->codec_id) {

  244.     case AV_CODEC_ID_PCM_ALAW:

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

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

  247.         break;

  248.     case AV_CODEC_ID_PCM_MULAW:

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

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

  251.         break;

  252.     case AV_CODEC_ID_PCM_F16LE:

  253.     case AV_CODEC_ID_PCM_F24LE:

  254.         if (avctx->bits_per_coded_sample < 1 || avctx->bits_per_coded_sample > 24)

  255.             return AVERROR_INVALIDDATA;

  256. 

  257.         s->scale = 1. / (1 << (avctx->bits_per_coded_sample - 1));

  258.         s->fdsp = avpriv_float_dsp_alloc(0);

  259.         if (!s->fdsp)

  260.             return AVERROR(ENOMEM);

  261.         break;

  262.     default:

  263.         break;

  264.     }

  265. 

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

  267. 

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

  269.         avctx->bits_per_raw_sample = av_get_bits_per_sample(avctx->codec_id);

  270. 

  271.     return 0;

  272. }

  273. 

  274. static av_cold int pcm_decode_close(AVCodecContext *avctx)

  275. {

  276.     PCMDecode *s = avctx->priv_data;

  277. 

  278.     av_freep(&s->fdsp);

  279. 

  280.     return 0;

  281. }

  282. 

  283. /**

  284.  * Read PCM samples macro

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

  286.  * @param endian bytestream_get_xxx() endian suffix

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

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

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

  290.  * @param shift  Bitshift (bits)

  291.  * @param offset Sample value offset

  292.  */

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

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

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

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

  297.         dst += size / 8;                                                \

  298.     }

  299. 

  300. #define DECODE_PLANAR(size, endian, src, dst, n, shift, offset)         \

  301.     n /= avctx->channels;                                               \

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

  303.         int i;                                                          \

  304.         dst = frame->extended_data[c];                                \

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

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

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

  308.             dst += size / 8;                                            \

  309.         }                                                               \

  310.     }

  311. 

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

  313.                             int *got_frame_ptr, AVPacket *avpkt)

  314. {

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

  316.     int buf_size       = avpkt->size;

  317.     PCMDecode *s       = avctx->priv_data;

  318.     AVFrame *frame     = data;

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

  320.     uint8_t *samples;

  321.     int32_t *dst_int32_t;

  322. 

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

  324. 

  325.     /* av_get_bits_per_sample returns 0 for AV_CODEC_ID_PCM_DVD */

  326.     samples_per_block = 1;

  327.     if (avctx->codec_id == AV_CODEC_ID_PCM_LXF) {

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

  329.         samples_per_block = 2;

  330.         sample_size       = 5;

  331.     }

  332. 

  333.     if (sample_size == 0) {

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

  335.         return AVERROR(EINVAL);

  336.     }

  337. 

  338.     if (avctx->channels == 0) {

  339.         av_log(avctx, AV_LOG_ERROR, "Invalid number of channels\n");

  340.         return AVERROR(EINVAL);

  341.     }

  342. 

  343.     if (avctx->codec_id != avctx->codec->id) {

  344.         av_log(avctx, AV_LOG_ERROR, "codec ids mismatch\n");

  345.         return AVERROR(EINVAL);

  346.     }

  347. 

  348.     n = avctx->channels * sample_size;

  349. 

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

  351.         if (buf_size < n) {

  352.             av_log(avctx, AV_LOG_ERROR,

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

  354.                    buf_size, n);

  355.             return AVERROR_INVALIDDATA;

  356.         } else

  357.             buf_size -= buf_size % n;

  358.     }

  359. 

  360.     n = buf_size / sample_size;

  361. 

  362.     /* get output buffer */

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

  364.     if ((ret = ff_get_buffer(avctx, frame, 0)) < 0)

  365.         return ret;

  366.     samples = frame->data[0];

  367. 

  368.     switch (avctx->codec_id) {

  369.     case AV_CODEC_ID_PCM_U32LE:

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

  371.         break;

  372.     case AV_CODEC_ID_PCM_U32BE:

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

  374.         break;

  375.     case AV_CODEC_ID_PCM_S24LE:

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

  377.         break;

  378.     case AV_CODEC_ID_PCM_S24LE_PLANAR:

  379.         DECODE_PLANAR(32, le24, src, samples, n, 8, 0);

  380.         break;

  381.     case AV_CODEC_ID_PCM_S24BE:

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

  383.         break;

  384.     case AV_CODEC_ID_PCM_U24LE:

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

  386.         break;

  387.     case AV_CODEC_ID_PCM_U24BE:

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

  389.         break;

  390.     case AV_CODEC_ID_PCM_S24DAUD:

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

  392.             uint32_t v = bytestream_get_be24(&src);

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

  394.             AV_WN16A(samples, ff_reverse[(v >> 8) & 0xff] +

  395.                              (ff_reverse[v        & 0xff] << 8));

  396.             samples += 2;

  397.         }

  398.         break;

  399.     case AV_CODEC_ID_PCM_U16LE:

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

  401.         break;

  402.     case AV_CODEC_ID_PCM_U16BE:

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

  404.         break;

  405.     case AV_CODEC_ID_PCM_S8:

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

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

  408.         break;

  409.     case AV_CODEC_ID_PCM_S8_PLANAR:

  410.         n /= avctx->channels;

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

  412.             int i;

  413.             samples = frame->extended_data[c];

  414.             for (i = n; i > 0; i--)

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

  416.         }

  417.         break;

  418. #if HAVE_BIGENDIAN

  419.     case AV_CODEC_ID_PCM_S64LE:

  420.     case AV_CODEC_ID_PCM_F64LE:

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

  422.         break;

  423.     case AV_CODEC_ID_PCM_S32LE:

  424.     case AV_CODEC_ID_PCM_F32LE:

  425.     case AV_CODEC_ID_PCM_F24LE:

  426.     case AV_CODEC_ID_PCM_F16LE:

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

  428.         break;

  429.     case AV_CODEC_ID_PCM_S32LE_PLANAR:

  430.         DECODE_PLANAR(32, le32, src, samples, n, 0, 0);

  431.         break;

  432.     case AV_CODEC_ID_PCM_S16LE:

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

  434.         break;

  435.     case AV_CODEC_ID_PCM_S16LE_PLANAR:

  436.         DECODE_PLANAR(16, le16, src, samples, n, 0, 0);

  437.         break;

  438.     case AV_CODEC_ID_PCM_F64BE:

  439.     case AV_CODEC_ID_PCM_F32BE:

  440.     case AV_CODEC_ID_PCM_S64BE:

  441.     case AV_CODEC_ID_PCM_S32BE:

  442.     case AV_CODEC_ID_PCM_S16BE:

  443. #else

  444.     case AV_CODEC_ID_PCM_S64BE:

  445.     case AV_CODEC_ID_PCM_F64BE:

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

  447.         break;

  448.     case AV_CODEC_ID_PCM_F32BE:

  449.     case AV_CODEC_ID_PCM_S32BE:

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

  451.         break;

  452.     case AV_CODEC_ID_PCM_S16BE:

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

  454.         break;

  455.     case AV_CODEC_ID_PCM_S16BE_PLANAR:

  456.         DECODE_PLANAR(16, be16, src, samples, n, 0, 0);

  457.         break;

  458.     case AV_CODEC_ID_PCM_F64LE:

  459.     case AV_CODEC_ID_PCM_F32LE:

  460.     case AV_CODEC_ID_PCM_F24LE:

  461.     case AV_CODEC_ID_PCM_F16LE:

  462.     case AV_CODEC_ID_PCM_S64LE:

  463.     case AV_CODEC_ID_PCM_S32LE:

  464.     case AV_CODEC_ID_PCM_S16LE:

  465. #endif /* HAVE_BIGENDIAN */

  466.     case AV_CODEC_ID_PCM_U8:

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

  468.         break;

  469. #if HAVE_BIGENDIAN

  470.     case AV_CODEC_ID_PCM_S16BE_PLANAR:

  471. #else

  472.     case AV_CODEC_ID_PCM_S16LE_PLANAR:

  473.     case AV_CODEC_ID_PCM_S32LE_PLANAR:

  474. #endif /* HAVE_BIGENDIAN */

  475.         n /= avctx->channels;

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

  477.             samples = frame->extended_data[c];

  478.             bytestream_get_buffer(&src, samples, n * sample_size);

  479.         }

  480.         break;

  481.     case AV_CODEC_ID_PCM_ZORK:

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

  483.             int v = *src++;

  484.             if (v < 128)

  485.                 v = 128 - v;

  486.             *samples++ = v;

  487.         }

  488.         break;

  489.     case AV_CODEC_ID_PCM_ALAW:

  490.     case AV_CODEC_ID_PCM_MULAW:

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

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

  493.             samples += 2;

  494.         }

  495.         break;

  496.     case AV_CODEC_ID_PCM_LXF:

  497.     {

  498.         int i;

  499.         n /= avctx->channels;

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

  501.             dst_int32_t = (int32_t *)frame->extended_data[c];

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

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

  504.                 *dst_int32_t++ =  ((uint32_t)src[2]<<28) |

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

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

  507.                                  ((src[2] & 0x0F) <<  8) |

  508.                                    src[1];

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

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

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

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

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

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

  515.                 src += 5;

  516.             }

  517.         }

  518.         break;

  519.     }

  520.     default:

  521.         return -1;

  522.     }

  523. 

  524.     if (avctx->codec_id == AV_CODEC_ID_PCM_F16LE ||

  525.         avctx->codec_id == AV_CODEC_ID_PCM_F24LE) {

  526.         s->fdsp->vector_fmul_scalar((float *)frame->extended_data[0],

  527.                                     (const float *)frame->extended_data[0],

  528.                                     s->scale, FFALIGN(frame->nb_samples * avctx->channels, 4));

  529.         emms_c();

  530.     }

  531. 

  532.     *got_frame_ptr = 1;

  533. 

  534.     return buf_size;

  535. }

  536. 

  537. #define PCM_ENCODER_0(id_, sample_fmt_, name_, long_name_)

  538. #define PCM_ENCODER_1(id_, sample_fmt_, name_, long_name_)                  \

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

  540.     .name         = #name_,                                                 \

  541.     .long_name    = NULL_IF_CONFIG_SMALL(long_name_),                       \

  542.     .type         = AVMEDIA_TYPE_AUDIO,                                     \

  543.     .id           = AV_CODEC_ID_ ## id_,                                    \

  544.     .init         = pcm_encode_init,                                        \

  545.     .encode2      = pcm_encode_frame,                                       \

  546.     .capabilities = AV_CODEC_CAP_VARIABLE_FRAME_SIZE,                       \

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

  548.                                                    AV_SAMPLE_FMT_NONE },    \

  549. }

  550. 

  551. #define PCM_ENCODER_2(cf, id, sample_fmt, name, long_name)                  \

  552.     PCM_ENCODER_ ## cf(id, sample_fmt, name, long_name)

  553. #define PCM_ENCODER_3(cf, id, sample_fmt, name, long_name)                  \

  554.     PCM_ENCODER_2(cf, id, sample_fmt, name, long_name)

  555. #define PCM_ENCODER(id, sample_fmt, name, long_name)                        \

  556.     PCM_ENCODER_3(CONFIG_ ## id ## _ENCODER, id, sample_fmt, name, long_name)

  557. 

  558. #define PCM_DECODER_0(id, sample_fmt, name, long_name)

  559. #define PCM_DECODER_1(id_, sample_fmt_, name_, long_name_)                  \

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

  561.     .name           = #name_,                                               \

  562.     .long_name      = NULL_IF_CONFIG_SMALL(long_name_),                     \

  563.     .type           = AVMEDIA_TYPE_AUDIO,                                   \

  564.     .id             = AV_CODEC_ID_ ## id_,                                  \

  565.     .priv_data_size = sizeof(PCMDecode),                                    \

  566.     .init           = pcm_decode_init,                                      \

  567.     .close          = pcm_decode_close,                                     \

  568.     .decode         = pcm_decode_frame,                                     \

  569.     .capabilities   = AV_CODEC_CAP_DR1,                                     \

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

  571.                                                      AV_SAMPLE_FMT_NONE },  \

  572. }

  573. 

  574. #define PCM_DECODER_2(cf, id, sample_fmt, name, long_name)                  \

  575.     PCM_DECODER_ ## cf(id, sample_fmt, name, long_name)

  576. #define PCM_DECODER_3(cf, id, sample_fmt, name, long_name)                  \

  577.     PCM_DECODER_2(cf, id, sample_fmt, name, long_name)

  578. #define PCM_DECODER(id, sample_fmt, name, long_name)                        \

  579.     PCM_DECODER_3(CONFIG_ ## id ## _DECODER, id, sample_fmt, name, long_name)

  580. 

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

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

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

  584. 

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

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

  587. PCM_DECODER(PCM_F16LE,        AV_SAMPLE_FMT_FLT, pcm_f16le,        "PCM 16.8 floating point little-endian");

  588. PCM_DECODER(PCM_F24LE,        AV_SAMPLE_FMT_FLT, pcm_f24le,        "PCM 24.0 floating point little-endian");

  589. PCM_CODEC  (PCM_F32BE,        AV_SAMPLE_FMT_FLT, pcm_f32be,        "PCM 32-bit floating point big-endian");

  590. PCM_CODEC  (PCM_F32LE,        AV_SAMPLE_FMT_FLT, pcm_f32le,        "PCM 32-bit floating point little-endian");

  591. PCM_CODEC  (PCM_F64BE,        AV_SAMPLE_FMT_DBL, pcm_f64be,        "PCM 64-bit floating point big-endian");

  592. PCM_CODEC  (PCM_F64LE,        AV_SAMPLE_FMT_DBL, pcm_f64le,        "PCM 64-bit floating point little-endian");

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

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

  595. PCM_CODEC  (PCM_S8,           AV_SAMPLE_FMT_U8,  pcm_s8,           "PCM signed 8-bit");

  596. PCM_CODEC  (PCM_S8_PLANAR,    AV_SAMPLE_FMT_U8P, pcm_s8_planar,    "PCM signed 8-bit planar");

  597. PCM_CODEC  (PCM_S16BE,        AV_SAMPLE_FMT_S16, pcm_s16be,        "PCM signed 16-bit big-endian");

  598. PCM_CODEC  (PCM_S16BE_PLANAR, AV_SAMPLE_FMT_S16P,pcm_s16be_planar, "PCM signed 16-bit big-endian planar");

  599. PCM_CODEC  (PCM_S16LE,        AV_SAMPLE_FMT_S16, pcm_s16le,        "PCM signed 16-bit little-endian");

  600. PCM_CODEC  (PCM_S16LE_PLANAR, AV_SAMPLE_FMT_S16P,pcm_s16le_planar, "PCM signed 16-bit little-endian planar");

  601. PCM_CODEC  (PCM_S24BE,        AV_SAMPLE_FMT_S32, pcm_s24be,        "PCM signed 24-bit big-endian");

  602. PCM_CODEC  (PCM_S24DAUD,      AV_SAMPLE_FMT_S16, pcm_s24daud,      "PCM D-Cinema audio signed 24-bit");

  603. PCM_CODEC  (PCM_S24LE,        AV_SAMPLE_FMT_S32, pcm_s24le,        "PCM signed 24-bit little-endian");

  604. PCM_CODEC  (PCM_S24LE_PLANAR, AV_SAMPLE_FMT_S32P,pcm_s24le_planar, "PCM signed 24-bit little-endian planar");

  605. PCM_CODEC  (PCM_S32BE,        AV_SAMPLE_FMT_S32, pcm_s32be,        "PCM signed 32-bit big-endian");

  606. PCM_CODEC  (PCM_S32LE,        AV_SAMPLE_FMT_S32, pcm_s32le,        "PCM signed 32-bit little-endian");

  607. PCM_CODEC  (PCM_S32LE_PLANAR, AV_SAMPLE_FMT_S32P,pcm_s32le_planar, "PCM signed 32-bit little-endian planar");

  608. PCM_CODEC  (PCM_U8,           AV_SAMPLE_FMT_U8,  pcm_u8,           "PCM unsigned 8-bit");

  609. PCM_CODEC  (PCM_U16BE,        AV_SAMPLE_FMT_S16, pcm_u16be,        "PCM unsigned 16-bit big-endian");

  610. PCM_CODEC  (PCM_U16LE,        AV_SAMPLE_FMT_S16, pcm_u16le,        "PCM unsigned 16-bit little-endian");

  611. PCM_CODEC  (PCM_U24BE,        AV_SAMPLE_FMT_S32, pcm_u24be,        "PCM unsigned 24-bit big-endian");

  612. PCM_CODEC  (PCM_U24LE,        AV_SAMPLE_FMT_S32, pcm_u24le,        "PCM unsigned 24-bit little-endian");

  613. PCM_CODEC  (PCM_U32BE,        AV_SAMPLE_FMT_S32, pcm_u32be,        "PCM unsigned 32-bit big-endian");

  614. PCM_CODEC  (PCM_U32LE,        AV_SAMPLE_FMT_S32, pcm_u32le,        "PCM unsigned 32-bit little-endian");

  615. PCM_DECODER(PCM_ZORK,         AV_SAMPLE_FMT_U8,  pcm_zork,         "PCM Zork");

  616. PCM_CODEC  (PCM_S64BE,        AV_SAMPLE_FMT_S64, pcm_s64be,        "PCM signed 64-bit big-endian");

  617. PCM_CODEC  (PCM_S64LE,        AV_SAMPLE_FMT_S64, pcm_s64le,        "PCM signed 64-bit little-endian");