PCM codecs. More...

#include "libavutil/attributes.h"
#include "avcodec.h"
#include "bytestream.h"
#include "internal.h"
#include "mathops.h"
#include "pcm_tablegen.h"

Data Structures
struct	PCMDecode

Macros
#define	ENCODE(type, endian, src, dst, n, shift, offset)
	Write PCM samples macro.

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

#define	DECODE(size, endian, src, dst, n, shift, offset)
	Read PCM samples macro.

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

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

#define	PCM_ENCODER_1(id_, sample_fmt_, name_, long_name_)

#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_ ## id ## _ENCODER, id, sample_fmt, name, long_name)

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

#define	PCM_DECODER_1(id_, sample_fmt_, name_, long_name_)

#define	PCM_DECODER_2(cf, id, sample_fmt, name, long_name) PCM_DECODER_ ## cf(id, sample_fmt, name, long_name)

#define	PCM_DECODER_3(cf, id, sample_fmt, name, long_name) PCM_DECODER_2(cf, id, sample_fmt, name, long_name)

#define	PCM_DECODER(id, sample_fmt, name, long_name) PCM_DECODER_3(CONFIG_ ## id ## _DECODER, id, sample_fmt, name, long_name)

#define	PCM_CODEC(id, sample_fmt_, name, long_name_)

Functions
static av_cold int	pcm_encode_init (AVCodecContext *avctx)

static av_cold int	pcm_encode_close (AVCodecContext *avctx)

static int	pcm_encode_frame (AVCodecContext avctx, AVPacket avpkt, const AVFrame frame, int got_packet_ptr)

static av_cold int	pcm_decode_init (AVCodecContext *avctx)

static int	pcm_decode_frame (AVCodecContext avctx, void data, int got_frame_ptr, AVPacket avpkt)

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

	PCM_DECODER (PCM_DVD, AV_SAMPLE_FMT_S32, pcm_dvd,"PCM signed 20\|24-bit big-endian")

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

	PCM_DECODER (PCM_ZORK, AV_SAMPLE_FMT_U8, pcm_zork,"PCM Zork")

Detailed Description

PCM codecs.

Definition in file pcm.c.

Macro Definition Documentation

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

Value:

samples_ ## type = (const type *) src;                              \
    for (; n > 0; n--) {                                                \
        register type v = (*samples_ ## type++ >> shift) + offset;      \
        bytestream_put_ ## endian(&dst, v);                             \
    }

Write PCM samples macro.

Parameters

type	Datatype of native machine format
endian	bytestream_put_xxx() suffix
src	Source pointer (variable name)
dst	Destination pointer (variable name)
n	Total number of samples (variable name)
shift	Bitshift (bits)
offset	Sample value offset

Definition at line 75 of file pcm.c.

Referenced by pcm_encode_frame().

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

Value:

n /= avctx->channels;                                               \
    for (c = 0; c < avctx->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);                         \
        }                                                               \
    }

Definition at line 82 of file pcm.c.

Referenced by pcm_encode_frame().

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

Value:

for (; n > 0; n--) {                                                \
        uint ## size ## _t v = bytestream_get_ ## endian(&src);         \
        AV_WN ## size ## A(dst, (v - offset) << shift);                 \
        dst += size / 8;                                                \
    }

Read PCM samples macro.

Parameters

size	Data size of native machine format
endian	bytestream_get_xxx() endian suffix
src	Source pointer (variable name)
dst	Destination pointer (variable name)
n	Total number of samples (variable name)
shift	Bitshift (bits)
offset	Sample value offset

Definition at line 277 of file pcm.c.

Referenced by pcm_decode_frame().

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

Value:

n /= avctx->channels;                                               \
    for (c = 0; c < avctx->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, (v - offset) << shift);             \
            dst += size / 8;                                            \
        }                                                               \
    }

Definition at line 284 of file pcm.c.

Referenced by pcm_decode_frame().

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

Definition at line 549 of file pcm.c.

#define PCM_ENCODER_1	(	id_,
		sample_fmt_,
		name_,
		long_name_
	)

Value:

AVCodec ff_ ## name_ ## _encoder = {                                        \
    .name         = #name_,                                                 \
    .type         = AVMEDIA_TYPE_AUDIO,                                     \
    .id           = AV_CODEC_ID_ ## id_,                                    \
    .init         = pcm_encode_init,                                        \
    .encode2      = pcm_encode_frame,                                       \
    .close        = pcm_encode_close,                                       \
    .capabilities = CODEC_CAP_VARIABLE_FRAME_SIZE,                          \
    .sample_fmts  = (const enum AVSampleFormat[]){ sample_fmt_,             \
                                                   AV_SAMPLE_FMT_NONE },    \
    .long_name    = NULL_IF_CONFIG_SMALL(long_name_),                       \
}

Definition at line 550 of file pcm.c.

#define PCM_ENCODER_2	(	cf,
		id,
		sample_fmt,
		name,
		long_name
	)	PCM_ENCODER_ ## cf(id, sample_fmt, name, long_name)

Definition at line 564 of file pcm.c.

#define PCM_ENCODER_3	(	cf,
		id,
		sample_fmt,
		name,
		long_name
	)	PCM_ENCODER_2(cf, id, sample_fmt, name, long_name)

Definition at line 566 of file pcm.c.

#define PCM_ENCODER	(	id,
		sample_fmt,
		name,
		long_name
	)	PCM_ENCODER_3(CONFIG_ ## id ## _ENCODER, id, sample_fmt, name, long_name)

Definition at line 568 of file pcm.c.

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

Definition at line 571 of file pcm.c.

#define PCM_DECODER_1	(	id_,
		sample_fmt_,
		name_,
		long_name_
	)

Value:

AVCodec ff_ ## name_ ## _decoder = {                                        \
    .name           = #name_,                                               \
    .type           = AVMEDIA_TYPE_AUDIO,                                   \
    .id             = AV_CODEC_ID_ ## id_,                                  \
    .priv_data_size = sizeof(PCMDecode),                                    \
    .init           = pcm_decode_init,                                      \
    .decode         = pcm_decode_frame,                                     \
    .capabilities   = CODEC_CAP_DR1,                                        \
    .sample_fmts    = (const enum AVSampleFormat[]){ sample_fmt_,           \
                                                     AV_SAMPLE_FMT_NONE },  \
    .long_name      = NULL_IF_CONFIG_SMALL(long_name_),                     \
}

Definition at line 572 of file pcm.c.

#define PCM_DECODER_2	(	cf,
		id,
		sample_fmt,
		name,
		long_name
	)	PCM_DECODER_ ## cf(id, sample_fmt, name, long_name)

Definition at line 586 of file pcm.c.

#define PCM_DECODER_3	(	cf,
		id,
		sample_fmt,
		name,
		long_name
	)	PCM_DECODER_2(cf, id, sample_fmt, name, long_name)

Definition at line 588 of file pcm.c.

#define PCM_DECODER	(	id,
		sample_fmt,
		name,
		long_name
	)	PCM_DECODER_3(CONFIG_ ## id ## _DECODER, id, sample_fmt, name, long_name)

Definition at line 590 of file pcm.c.

#define PCM_CODEC	(	id,
		sample_fmt_,
		name,
		long_name_
	)

Value:

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

PCM_DECODER(id, sample_fmt_, name, long_name_)

Definition at line 593 of file pcm.c.

Function Documentation

static av_cold int pcm_encode_init ( AVCodecContext * avctx )

static

Definition at line 34 of file pcm.c.

static av_cold int pcm_encode_close ( AVCodecContext * avctx )

static

Definition at line 58 of file pcm.c.

static int pcm_encode_frame	(	AVCodecContext *	avctx,
		AVPacket *	avpkt,
		const AVFrame *	frame,
		int *	got_packet_ptr
	)

static

Definition at line 93 of file pcm.c.

static av_cold int pcm_decode_init ( AVCodecContext * avctx )

static

Definition at line 236 of file pcm.c.

static int pcm_decode_frame	(	AVCodecContext *	avctx,
		void *	data,
		int *	got_frame_ptr,
		AVPacket *	avpkt
	)

static

Definition at line 296 of file pcm.c.

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

PCM_DECODER	(	PCM_DVD	,
		AV_SAMPLE_FMT_S32	,
		pcm_dvd	,
		"PCM signed 20\|24-bit big-endian"
	)

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

PCM_DECODER	(	PCM_ZORK	,
		AV_SAMPLE_FMT_U8	,
		pcm_zork	,
		"PCM Zork"
	)

Data Structures

Macros

Functions

Detailed Description

Macro Definition Documentation

Function Documentation