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FFmpeg/libavcodec/pcm.c
Kacper Michajłow d6cb0d2c2b ALL: move av_unused to conform with standard requirement 
This is required placement by standard [[maybe_unused]] attribute, works
the same for __attribute__((unused)).

Signed-off-by: Kacper Michajłow <kasper93@gmail.com>
2025-09-26 16:15:46 +00:00

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/*
* PCM codecs
* Copyright (c) 2001 Fabrice Bellard
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/**
* @file
* PCM codecs
*/
#include "config.h"
#include "config_components.h"
#include "libavutil/attributes.h"
#include "libavutil/float_dsp.h"
#include "libavutil/mem.h"
#include "libavutil/reverse.h"
#include "libavutil/thread.h"
#include "avcodec.h"
#include "bytestream.h"
#include "codec_internal.h"
#include "decode.h"
#include "encode.h"
#include "pcm_tablegen.h"
av_unused av_cold static int pcm_encode_init(AVCodecContext *avctx)
{
avctx->frame_size = 0;
#if !CONFIG_HARDCODED_TABLES
switch (avctx->codec->id) {
#if CONFIG_PCM_ALAW_ENCODER
case AV_CODEC_ID_PCM_ALAW: {
static AVOnce once_alaw = AV_ONCE_INIT;
ff_thread_once(&once_alaw, pcm_alaw_tableinit);
break;
}
#endif
#if CONFIG_PCM_MULAW_ENCODER
case AV_CODEC_ID_PCM_MULAW: {
static AVOnce once_mulaw = AV_ONCE_INIT;
ff_thread_once(&once_mulaw, pcm_ulaw_tableinit);
break;
}
#endif
#if CONFIG_PCM_VIDC_ENCODER
case AV_CODEC_ID_PCM_VIDC: {
static AVOnce once_vidc = AV_ONCE_INIT;
ff_thread_once(&once_vidc, pcm_vidc_tableinit);
break;
}
#endif
default:
break;
}
#endif
avctx->bits_per_coded_sample = av_get_bits_per_sample(avctx->codec->id);
avctx->block_align = avctx->ch_layout.nb_channels * avctx->bits_per_coded_sample / 8;
avctx->bit_rate = avctx->block_align * 8LL * avctx->sample_rate;
return 0;
}
/**
* Write PCM samples macro
* @param type Datatype of native machine format
* @param endian bytestream_put_xxx() suffix
* @param src Source pointer (variable name)
* @param dst Destination pointer (variable name)
* @param n Total number of samples (variable name)
* @param shift Bitshift (bits)
* @param offset Sample value offset
*/
#define ENCODE(type, endian, src, dst, n, shift, offset) \
samples_ ## type = (const type *) src; \
for (; n > 0; n--) { \
register type v = (*samples_ ## type++ >> shift) + offset; \
bytestream_put_ ## endian(&dst, v); \
}
#define ENCODE_PLANAR(type, endian, dst, n, shift, offset) \
n /= avctx->ch_layout.nb_channels; \
for (c = 0; c < avctx->ch_layout.nb_channels; c++) { \
int i; \
samples_ ## type = (const type *) frame->extended_data[c]; \
for (i = n; i > 0; i--) { \
register type v = (*samples_ ## type++ >> shift) + offset; \
bytestream_put_ ## endian(&dst, v); \
} \
}
av_unused static int pcm_encode_frame(AVCodecContext *avctx, AVPacket *avpkt,
const AVFrame *frame, int *got_packet_ptr)
{
int n, c, sample_size, ret;
const short *samples;
unsigned char *dst;
const uint8_t *samples_uint8_t;
const int16_t *samples_int16_t;
const int32_t *samples_int32_t;
const int64_t *samples_int64_t;
const uint16_t *samples_uint16_t;
const uint32_t *samples_uint32_t;
sample_size = av_get_bits_per_sample(avctx->codec->id) / 8;
n = frame->nb_samples * avctx->ch_layout.nb_channels;
samples = (const short *)frame->data[0];
if ((ret = ff_get_encode_buffer(avctx, avpkt, n * sample_size, 0)) < 0)
return ret;
dst = avpkt->data;
switch (avctx->codec->id) {
case AV_CODEC_ID_PCM_U32LE:
ENCODE(uint32_t, le32, samples, dst, n, 0, 0x80000000)
break;
case AV_CODEC_ID_PCM_U32BE:
ENCODE(uint32_t, be32, samples, dst, n, 0, 0x80000000)
break;
case AV_CODEC_ID_PCM_S24LE:
ENCODE(int32_t, le24, samples, dst, n, 8, 0)
break;
case AV_CODEC_ID_PCM_S24LE_PLANAR:
ENCODE_PLANAR(int32_t, le24, dst, n, 8, 0)
break;
case AV_CODEC_ID_PCM_S24BE:
ENCODE(int32_t, be24, samples, dst, n, 8, 0)
break;
case AV_CODEC_ID_PCM_U24LE:
ENCODE(uint32_t, le24, samples, dst, n, 8, 0x800000)
break;
case AV_CODEC_ID_PCM_U24BE:
ENCODE(uint32_t, be24, samples, dst, n, 8, 0x800000)
break;
case AV_CODEC_ID_PCM_S24DAUD:
for (; n > 0; n--) {
uint32_t tmp = ff_reverse[(*samples >> 8) & 0xff] +
(ff_reverse[*samples & 0xff] << 8);
tmp <<= 4; // sync flags would go here
bytestream_put_be24(&dst, tmp);
samples++;
}
break;
case AV_CODEC_ID_PCM_U16LE:
ENCODE(uint16_t, le16, samples, dst, n, 0, 0x8000)
break;
case AV_CODEC_ID_PCM_U16BE:
ENCODE(uint16_t, be16, samples, dst, n, 0, 0x8000)
break;
case AV_CODEC_ID_PCM_S8:
ENCODE(uint8_t, byte, samples, dst, n, 0, -128)
break;
case AV_CODEC_ID_PCM_S8_PLANAR:
ENCODE_PLANAR(uint8_t, byte, dst, n, 0, -128)
break;
#if HAVE_BIGENDIAN
case AV_CODEC_ID_PCM_S64LE:
case AV_CODEC_ID_PCM_F64LE:
ENCODE(int64_t, le64, samples, dst, n, 0, 0)
break;
case AV_CODEC_ID_PCM_S32LE:
case AV_CODEC_ID_PCM_F32LE:
ENCODE(int32_t, le32, samples, dst, n, 0, 0)
break;
case AV_CODEC_ID_PCM_S32LE_PLANAR:
ENCODE_PLANAR(int32_t, le32, dst, n, 0, 0)
break;
case AV_CODEC_ID_PCM_S16LE:
ENCODE(int16_t, le16, samples, dst, n, 0, 0)
break;
case AV_CODEC_ID_PCM_S16LE_PLANAR:
ENCODE_PLANAR(int16_t, le16, dst, n, 0, 0)
break;
case AV_CODEC_ID_PCM_F64BE:
case AV_CODEC_ID_PCM_F32BE:
case AV_CODEC_ID_PCM_S64BE:
case AV_CODEC_ID_PCM_S32BE:
case AV_CODEC_ID_PCM_S16BE:
#else
case AV_CODEC_ID_PCM_S64BE:
case AV_CODEC_ID_PCM_F64BE:
ENCODE(int64_t, be64, samples, dst, n, 0, 0)
break;
case AV_CODEC_ID_PCM_F32BE:
case AV_CODEC_ID_PCM_S32BE:
ENCODE(int32_t, be32, samples, dst, n, 0, 0)
break;
case AV_CODEC_ID_PCM_S16BE:
ENCODE(int16_t, be16, samples, dst, n, 0, 0)
break;
case AV_CODEC_ID_PCM_S16BE_PLANAR:
ENCODE_PLANAR(int16_t, be16, dst, n, 0, 0)
break;
case AV_CODEC_ID_PCM_F64LE:
case AV_CODEC_ID_PCM_F32LE:
case AV_CODEC_ID_PCM_S64LE:
case AV_CODEC_ID_PCM_S32LE:
case AV_CODEC_ID_PCM_S16LE:
#endif /* HAVE_BIGENDIAN */
case AV_CODEC_ID_PCM_U8:
memcpy(dst, samples, n * sample_size);
break;
#if HAVE_BIGENDIAN
case AV_CODEC_ID_PCM_S16BE_PLANAR:
#else
case AV_CODEC_ID_PCM_S16LE_PLANAR:
case AV_CODEC_ID_PCM_S32LE_PLANAR:
#endif /* HAVE_BIGENDIAN */
n /= avctx->ch_layout.nb_channels;
for (c = 0; c < avctx->ch_layout.nb_channels; c++) {
const uint8_t *src = frame->extended_data[c];
bytestream_put_buffer(&dst, src, n * sample_size);
}
break;
#if CONFIG_PCM_ALAW_ENCODER
case AV_CODEC_ID_PCM_ALAW:
for (; n > 0; n--) {
int v = *samples++;
*dst++ = linear_to_alaw[(v + 32768) >> 2];
}
break;
#endif
#if CONFIG_PCM_MULAW_ENCODER
case AV_CODEC_ID_PCM_MULAW:
for (; n > 0; n--) {
int v = *samples++;
*dst++ = linear_to_ulaw[(v + 32768) >> 2];
}
break;
#endif
#if CONFIG_PCM_VIDC_ENCODER
case AV_CODEC_ID_PCM_VIDC:
for (; n > 0; n--) {
int v = *samples++;
*dst++ = linear_to_vidc[(v + 32768) >> 2];
}
break;
#endif
default:
return -1;
}
*got_packet_ptr = 1;
return 0;
}
typedef struct PCMDecode {
int sample_size;
} PCMDecode;
av_unused av_cold static int pcm_decode_init(AVCodecContext *avctx)
{
PCMDecode *s = avctx->priv_data;
static const struct {
enum AVCodecID codec_id;
int8_t sample_fmt;
uint8_t sample_size;
uint8_t bits_per_sample;
} codec_id_to_samplefmt[] = {
#define ENTRY(CODEC_ID, SAMPLE_FMT, BITS_PER_SAMPLE) \
{ AV_CODEC_ID_PCM_ ## CODEC_ID, AV_SAMPLE_FMT_ ## SAMPLE_FMT, \
BITS_PER_SAMPLE / 8, BITS_PER_SAMPLE }
ENTRY(S8, U8, 8), ENTRY(S8_PLANAR, U8P, 8),
ENTRY(S16BE, S16, 16), ENTRY(S16BE_PLANAR, S16P, 16),
ENTRY(S16LE, S16, 16), ENTRY(S16LE_PLANAR, S16P, 16),
ENTRY(S24DAUD, S16, 24), ENTRY(S24BE, S32, 24),
ENTRY(S24LE, S32, 24), ENTRY(S24LE_PLANAR, S32P, 24),
ENTRY(S32BE, S32, 32), ENTRY(S32LE, S32, 32),
ENTRY(S32LE_PLANAR, S32P, 32),
ENTRY(S64BE, S64, 64), ENTRY(S64LE, S64, 64),
ENTRY(SGA, U8, 8), ENTRY(U8, U8, 8),
ENTRY(U16BE, S16, 16), ENTRY(U16LE, S16, 16),
ENTRY(U24BE, S32, 24), ENTRY(U24LE, S32, 24),
ENTRY(U32BE, S32, 32), ENTRY(U32LE, S32, 32),
ENTRY(F32BE, FLT, 32), ENTRY(F32LE, FLT, 32),
ENTRY(F64BE, DBL, 64), ENTRY(F64LE, DBL, 64),
{ .codec_id = AV_CODEC_ID_PCM_LXF, .sample_fmt = AV_SAMPLE_FMT_S32P, .sample_size = 5 },
};
for (unsigned i = 0; i < FF_ARRAY_ELEMS(codec_id_to_samplefmt); ++i) {
if (codec_id_to_samplefmt[i].codec_id == avctx->codec_id) {
s->sample_size = codec_id_to_samplefmt[i].sample_size;
avctx->sample_fmt = codec_id_to_samplefmt[i].sample_fmt;
if (avctx->sample_fmt == AV_SAMPLE_FMT_S32)
avctx->bits_per_raw_sample = codec_id_to_samplefmt[i].bits_per_sample;
break;
}
av_assert1(i + 1 < FF_ARRAY_ELEMS(codec_id_to_samplefmt));
}
return 0;
}
typedef struct PCMScaleDecode {
PCMDecode base;
void (*vector_fmul_scalar)(float *dst, const float *src, float mul,
int len);
float scale;
} PCMScaleDecode;
av_unused av_cold static int pcm_scale_decode_init(AVCodecContext *avctx)
{
PCMScaleDecode *s = avctx->priv_data;
AVFloatDSPContext *fdsp;
avctx->sample_fmt = AV_SAMPLE_FMT_FLT;
s->base.sample_size = 4;
if (avctx->bits_per_coded_sample < 1 || avctx->bits_per_coded_sample > 24)
return AVERROR_INVALIDDATA;
s->scale = 1. / (1 << (avctx->bits_per_coded_sample - 1));
fdsp = avpriv_float_dsp_alloc(0);
if (!fdsp)
return AVERROR(ENOMEM);
s->vector_fmul_scalar = fdsp->vector_fmul_scalar;
av_free(fdsp);
return 0;
}
typedef struct PCMLUTDecode {
PCMDecode base;
int16_t table[256];
} PCMLUTDecode;
av_unused av_cold static int pcm_lut_decode_init(AVCodecContext *avctx)
{
PCMLUTDecode *s = avctx->priv_data;
switch (avctx->codec_id) {
default:
av_unreachable("pcm_lut_decode_init() only used with alaw, mulaw and vidc");
#if CONFIG_PCM_ALAW_DECODER
case AV_CODEC_ID_PCM_ALAW:
for (int i = 0; i < 256; i++)
s->table[i] = alaw2linear(i);
break;
#endif
#if CONFIG_PCM_MULAW_DECODER
case AV_CODEC_ID_PCM_MULAW:
for (int i = 0; i < 256; i++)
s->table[i] = ulaw2linear(i);
break;
#endif
#if CONFIG_PCM_VIDC_DECODER
case AV_CODEC_ID_PCM_VIDC:
for (int i = 0; i < 256; i++)
s->table[i] = vidc2linear(i);
break;
#endif
}
avctx->sample_fmt = AV_SAMPLE_FMT_S16;
s->base.sample_size = 1;
return 0;
}
/**
* Read PCM samples macro
* @param size Data size of native machine format
* @param endian bytestream_get_xxx() endian suffix
* @param src Source pointer (variable name)
* @param dst Destination pointer (variable name)
* @param n Total number of samples (variable name)
* @param shift Bitshift (bits)
* @param offset Sample value offset
*/
#define DECODE(size, endian, src, dst, n, shift, offset) \
for (; n > 0; n--) { \
uint ## size ## _t v = bytestream_get_ ## endian(&src); \
AV_WN ## size ## A(dst, (uint ## size ## _t)(v - offset) << shift); \
dst += size / 8; \
}
#define DECODE_PLANAR(size, endian, src, dst, n, shift, offset) \
n /= channels; \
for (c = 0; c < avctx->ch_layout.nb_channels; c++) { \
int i; \
dst = frame->extended_data[c]; \
for (i = n; i > 0; i--) { \
uint ## size ## _t v = bytestream_get_ ## endian(&src); \
AV_WN ## size ## A(dst, (uint ## size ##_t)(v - offset) << shift); \
dst += size / 8; \
} \
}
static int pcm_decode_frame(AVCodecContext *avctx, AVFrame *frame,
int *got_frame_ptr, AVPacket *avpkt)
{
const uint8_t *src = avpkt->data;
int buf_size = avpkt->size;
PCMDecode *s = avctx->priv_data;
int channels = avctx->ch_layout.nb_channels;
int sample_size = s->sample_size;
int c, n, ret, samples_per_block;
uint8_t *samples;
int32_t *dst_int32_t;
samples_per_block = 1;
if (avctx->codec_id == AV_CODEC_ID_PCM_LXF) {
/* we process 40-bit blocks per channel for LXF */
samples_per_block = 2;
}
if (channels == 0) {
av_log(avctx, AV_LOG_ERROR, "Invalid number of channels\n");
return AVERROR(EINVAL);
}
if (avctx->codec_id != avctx->codec->id) {
av_log(avctx, AV_LOG_ERROR, "codec ids mismatch\n");
return AVERROR(EINVAL);
}
n = channels * sample_size;
if (n && buf_size % n) {
if (buf_size < n) {
av_log(avctx, AV_LOG_ERROR,
"Invalid PCM packet, data has size %d but at least a size of %d was expected\n",
buf_size, n);
return AVERROR_INVALIDDATA;
} else
buf_size -= buf_size % n;
}
n = buf_size / sample_size;
/* get output buffer */
frame->nb_samples = n * samples_per_block / channels;
if ((ret = ff_get_buffer(avctx, frame, 0)) < 0)
return ret;
samples = frame->data[0];
switch (avctx->codec_id) {
case AV_CODEC_ID_PCM_U32LE:
DECODE(32, le32, src, samples, n, 0, 0x80000000)
break;
case AV_CODEC_ID_PCM_U32BE:
DECODE(32, be32, src, samples, n, 0, 0x80000000)
break;
case AV_CODEC_ID_PCM_S24LE:
DECODE(32, le24, src, samples, n, 8, 0)
break;
case AV_CODEC_ID_PCM_S24LE_PLANAR:
DECODE_PLANAR(32, le24, src, samples, n, 8, 0);
break;
case AV_CODEC_ID_PCM_S24BE:
DECODE(32, be24, src, samples, n, 8, 0)
break;
case AV_CODEC_ID_PCM_U24LE:
DECODE(32, le24, src, samples, n, 8, 0x800000)
break;
case AV_CODEC_ID_PCM_U24BE:
DECODE(32, be24, src, samples, n, 8, 0x800000)
break;
case AV_CODEC_ID_PCM_S24DAUD:
for (; n > 0; n--) {
uint32_t v = bytestream_get_be24(&src);
v >>= 4; // sync flags are here
AV_WN16A(samples, ff_reverse[(v >> 8) & 0xff] +
(ff_reverse[v & 0xff] << 8));
samples += 2;
}
break;
case AV_CODEC_ID_PCM_U16LE:
DECODE(16, le16, src, samples, n, 0, 0x8000)
break;
case AV_CODEC_ID_PCM_U16BE:
DECODE(16, be16, src, samples, n, 0, 0x8000)
break;
case AV_CODEC_ID_PCM_S8:
for (; n > 0; n--)
*samples++ = *src++ + 128;
break;
case AV_CODEC_ID_PCM_SGA:
for (; n > 0; n--) {
int sign = *src >> 7;
int magn = *src & 0x7f;
*samples++ = sign ? 128 - magn : 128 + magn;
src++;
}
break;
case AV_CODEC_ID_PCM_S8_PLANAR:
n /= avctx->ch_layout.nb_channels;
for (c = 0; c < avctx->ch_layout.nb_channels; c++) {
int i;
samples = frame->extended_data[c];
for (i = n; i > 0; i--)
*samples++ = *src++ + 128;
}
break;
#if HAVE_BIGENDIAN
case AV_CODEC_ID_PCM_S64LE:
case AV_CODEC_ID_PCM_F64LE:
DECODE(64, le64, src, samples, n, 0, 0)
break;
case AV_CODEC_ID_PCM_S32LE:
case AV_CODEC_ID_PCM_F32LE:
case AV_CODEC_ID_PCM_F24LE:
case AV_CODEC_ID_PCM_F16LE:
DECODE(32, le32, src, samples, n, 0, 0)
break;
case AV_CODEC_ID_PCM_S32LE_PLANAR:
DECODE_PLANAR(32, le32, src, samples, n, 0, 0);
break;
case AV_CODEC_ID_PCM_S16LE:
DECODE(16, le16, src, samples, n, 0, 0)
break;
case AV_CODEC_ID_PCM_S16LE_PLANAR:
DECODE_PLANAR(16, le16, src, samples, n, 0, 0);
break;
case AV_CODEC_ID_PCM_F64BE:
case AV_CODEC_ID_PCM_F32BE:
case AV_CODEC_ID_PCM_S64BE:
case AV_CODEC_ID_PCM_S32BE:
case AV_CODEC_ID_PCM_S16BE:
#else
case AV_CODEC_ID_PCM_S64BE:
case AV_CODEC_ID_PCM_F64BE:
DECODE(64, be64, src, samples, n, 0, 0)
break;
case AV_CODEC_ID_PCM_F32BE:
case AV_CODEC_ID_PCM_S32BE:
DECODE(32, be32, src, samples, n, 0, 0)
break;
case AV_CODEC_ID_PCM_S16BE:
DECODE(16, be16, src, samples, n, 0, 0)
break;
case AV_CODEC_ID_PCM_S16BE_PLANAR:
DECODE_PLANAR(16, be16, src, samples, n, 0, 0);
break;
case AV_CODEC_ID_PCM_F64LE:
case AV_CODEC_ID_PCM_F32LE:
case AV_CODEC_ID_PCM_F24LE:
case AV_CODEC_ID_PCM_F16LE:
case AV_CODEC_ID_PCM_S64LE:
case AV_CODEC_ID_PCM_S32LE:
case AV_CODEC_ID_PCM_S16LE:
#endif /* HAVE_BIGENDIAN */
case AV_CODEC_ID_PCM_U8:
memcpy(samples, src, n * sample_size);
break;
#if HAVE_BIGENDIAN
case AV_CODEC_ID_PCM_S16BE_PLANAR:
#else
case AV_CODEC_ID_PCM_S16LE_PLANAR:
case AV_CODEC_ID_PCM_S32LE_PLANAR:
#endif /* HAVE_BIGENDIAN */
n /= avctx->ch_layout.nb_channels;
for (c = 0; c < avctx->ch_layout.nb_channels; c++) {
samples = frame->extended_data[c];
bytestream_get_buffer(&src, samples, n * sample_size);
}
break;
#if CONFIG_PCM_ALAW_DECODER || CONFIG_PCM_MULAW_DECODER || \
CONFIG_PCM_VIDC_DECODER
case AV_CODEC_ID_PCM_ALAW:
case AV_CODEC_ID_PCM_MULAW:
case AV_CODEC_ID_PCM_VIDC: {
const int16_t *const lut = ((PCMLUTDecode*)avctx->priv_data)->table;
int16_t *restrict samples_16 = (int16_t*)samples;
for (; n > 0; n--)
*samples_16++ = lut[*src++];
break;
}
#endif
case AV_CODEC_ID_PCM_LXF:
{
int i;
n /= channels;
for (c = 0; c < channels; c++) {
dst_int32_t = (int32_t *)frame->extended_data[c];
for (i = 0; i < n; i++) {
// extract low 20 bits and expand to 32 bits
*dst_int32_t++ = ((uint32_t)src[2]<<28) |
(src[1] << 20) |
(src[0] << 12) |
((src[2] & 0x0F) << 8) |
src[1];
// extract high 20 bits and expand to 32 bits
*dst_int32_t++ = ((uint32_t)src[4]<<24) |
(src[3] << 16) |
((src[2] & 0xF0) << 8) |
(src[4] << 4) |
(src[3] >> 4);
src += 5;
}
}
break;
}
default:
return -1;
}
if (avctx->codec_id == AV_CODEC_ID_PCM_F16LE ||
avctx->codec_id == AV_CODEC_ID_PCM_F24LE) {
PCMScaleDecode *s2 = avctx->priv_data;
s2->vector_fmul_scalar((float *)frame->extended_data[0],
(const float *)frame->extended_data[0],
s2->scale, FFALIGN(frame->nb_samples * avctx->ch_layout.nb_channels, 4));
}
*got_frame_ptr = 1;
return buf_size;
}
#define PCM_ENCODER_0(id_, sample_fmt_, name_, long_name_)
#define PCM_ENCODER_1(id_, sample_fmt_, name_, long_name_) \
const FFCodec ff_ ## name_ ## _encoder = { \
.p.name = #name_, \
CODEC_LONG_NAME(long_name_), \
.p.type = AVMEDIA_TYPE_AUDIO, \
.p.id = id_, \
.p.capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_VARIABLE_FRAME_SIZE | \
AV_CODEC_CAP_ENCODER_REORDERED_OPAQUE, \
.init = pcm_encode_init, \
FF_CODEC_ENCODE_CB(pcm_encode_frame), \
CODEC_SAMPLEFMTS(sample_fmt_), \
}
#define PCM_ENCODER_2(cf, id, sample_fmt, name, long_name) \
PCM_ENCODER_ ## cf(id, sample_fmt, name, long_name)
#define PCM_ENCODER_3(cf, id, sample_fmt, name, long_name) \
PCM_ENCODER_2(cf, id, sample_fmt, name, long_name)
#define PCM_ENCODER(id, sample_fmt, name, long_name) \
PCM_ENCODER_3(CONFIG_PCM_ ## id ## _ENCODER, AV_CODEC_ID_PCM_ ## id, \
AV_SAMPLE_FMT_ ## sample_fmt, pcm_ ## name, long_name)
#define PCM_DECODER_0(id, sample_fmt, name, long_name, Context, init_func)
#define PCM_DECODER_1(id_, sample_fmt, name_, long_name, Context, init_func)\
const FFCodec ff_ ## name_ ## _decoder = { \
.p.name = #name_, \
CODEC_LONG_NAME(long_name), \
.p.type = AVMEDIA_TYPE_AUDIO, \
.p.id = id_, \
.priv_data_size = sizeof(Context), \
.init = init_func, \
FF_CODEC_DECODE_CB(pcm_decode_frame), \
.p.capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_PARAM_CHANGE, \
}
#define PCM_DECODER_2(cf, id, sample_fmt, name, long_name, Context, init_func) \
PCM_DECODER_ ## cf(id, sample_fmt, name, long_name, Context, init_func)
#define PCM_DECODER_3(cf, id, sample_fmt, name, long_name, Context, init_func) \
PCM_DECODER_2(cf, id, sample_fmt, name, long_name, Context, init_func)
#define PCM_DEC_EXT(id, sample_fmt, name, long_name, Context, init_func) \
PCM_DECODER_3(CONFIG_PCM_ ## id ## _DECODER, AV_CODEC_ID_PCM_ ## id, \
AV_SAMPLE_FMT_ ## sample_fmt, pcm_ ## name, long_name, \
Context, init_func)
#define PCM_DECODER(id, sample_fmt, name, long_name) \
PCM_DEC_EXT(id, sample_fmt, name, long_name, PCMDecode, pcm_decode_init)
#define PCM_CODEC(id, sample_fmt_, name, long_name_) \
PCM_ENCODER(id, sample_fmt_, name, long_name_); \
PCM_DECODER(id, sample_fmt_, name, long_name_)
#define PCM_CODEC_EXT(id, sample_fmt, name, long_name, DecContext, dec_init_func) \
PCM_DEC_EXT(id, sample_fmt, name, long_name, DecContext, dec_init_func); \
PCM_ENCODER(id, sample_fmt, name, long_name)
/* Note: Do not forget to add new entries to the Makefile and
* to the table in pcm_decode_init() as well. */
// AV_CODEC_ID_* pcm_* name
// AV_SAMPLE_FMT_* long name DecodeContext decode init func
PCM_CODEC_EXT(ALAW, S16, alaw, "PCM A-law / G.711 A-law", PCMLUTDecode, pcm_lut_decode_init);
PCM_DEC_EXT (F16LE, FLT, f16le, "PCM 16.8 floating point little-endian", PCMScaleDecode, pcm_scale_decode_init);
PCM_DEC_EXT (F24LE, FLT, f24le, "PCM 24.0 floating point little-endian", PCMScaleDecode, pcm_scale_decode_init);
PCM_CODEC (F32BE, FLT, f32be, "PCM 32-bit floating point big-endian");
PCM_CODEC (F32LE, FLT, f32le, "PCM 32-bit floating point little-endian");
PCM_CODEC (F64BE, DBL, f64be, "PCM 64-bit floating point big-endian");
PCM_CODEC (F64LE, DBL, f64le, "PCM 64-bit floating point little-endian");
PCM_DECODER (LXF, S32P,lxf, "PCM signed 20-bit little-endian planar");
PCM_CODEC_EXT(MULAW, S16, mulaw, "PCM mu-law / G.711 mu-law", PCMLUTDecode, pcm_lut_decode_init);
PCM_CODEC (S8, U8, s8, "PCM signed 8-bit");
PCM_CODEC (S8_PLANAR, U8P, s8_planar, "PCM signed 8-bit planar");
PCM_CODEC (S16BE, S16, s16be, "PCM signed 16-bit big-endian");
PCM_CODEC (S16BE_PLANAR, S16P,s16be_planar, "PCM signed 16-bit big-endian planar");
PCM_CODEC (S16LE, S16, s16le, "PCM signed 16-bit little-endian");
PCM_CODEC (S16LE_PLANAR, S16P,s16le_planar, "PCM signed 16-bit little-endian planar");
PCM_CODEC (S24BE, S32, s24be, "PCM signed 24-bit big-endian");
PCM_CODEC (S24DAUD, S16, s24daud, "PCM D-Cinema audio signed 24-bit");
PCM_CODEC (S24LE, S32, s24le, "PCM signed 24-bit little-endian");
PCM_CODEC (S24LE_PLANAR, S32P,s24le_planar, "PCM signed 24-bit little-endian planar");
PCM_CODEC (S32BE, S32, s32be, "PCM signed 32-bit big-endian");
PCM_CODEC (S32LE, S32, s32le, "PCM signed 32-bit little-endian");
PCM_CODEC (S32LE_PLANAR, S32P,s32le_planar, "PCM signed 32-bit little-endian planar");
PCM_CODEC (U8, U8, u8, "PCM unsigned 8-bit");
PCM_CODEC (U16BE, S16, u16be, "PCM unsigned 16-bit big-endian");
PCM_CODEC (U16LE, S16, u16le, "PCM unsigned 16-bit little-endian");
PCM_CODEC (U24BE, S32, u24be, "PCM unsigned 24-bit big-endian");
PCM_CODEC (U24LE, S32, u24le, "PCM unsigned 24-bit little-endian");
PCM_CODEC (U32BE, S32, u32be, "PCM unsigned 32-bit big-endian");
PCM_CODEC (U32LE, S32, u32le, "PCM unsigned 32-bit little-endian");
PCM_CODEC (S64BE, S64, s64be, "PCM signed 64-bit big-endian");
PCM_CODEC (S64LE, S64, s64le, "PCM signed 64-bit little-endian");
PCM_CODEC_EXT(VIDC, S16, vidc, "PCM Archimedes VIDC", PCMLUTDecode, pcm_lut_decode_init);
PCM_DECODER (SGA, U8, sga, "PCM SGA");
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