FFmpeg: libavcodec/atrac3plusdec.c File Reference

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libavcodec

atrac3plusdec.c File Reference

Sony ATRAC3+ compatible decoder. More...

#include <stdint.h>
#include <string.h>
#include "libavutil/channel_layout.h"
#include "libavutil/float_dsp.h"
#include "avcodec.h"
#include "get_bits.h"
#include "internal.h"
#include "atrac.h"
#include "atrac3plus.h"

Go to the source code of this file.

Data Structures

struct ATRAC3PContext

Functions

static av_cold int atrac3p_decode_close (AVCodecContext *avctx)

static av_cold int set_channel_params (ATRAC3PContext *ctx, AVCodecContext *avctx)

static av_cold int atrac3p_decode_init (AVCodecContext *avctx)

static void decode_residual_spectrum (Atrac3pChanUnitCtx *ctx, float out[2][ATRAC3P_FRAME_SAMPLES], int num_channels, AVCodecContext *avctx)

static void reconstruct_frame (ATRAC3PContext *ctx, Atrac3pChanUnitCtx *ch_unit, int num_channels, AVCodecContext *avctx)

static int atrac3p_decode_frame (AVCodecContext *avctx, void *data, int *got_frame_ptr, AVPacket *avpkt)

Variables

AVCodec ff_atrac3p_decoder

Detailed Description

Sony ATRAC3+ compatible decoder.

Container formats used to store its data: RIFF WAV (.at3) and Sony OpenMG (.oma, .aa3).

Technical description of this codec can be found here: http://wiki.multimedia.cx/index.php?title=ATRAC3plus

Kudos to Benjamin Larsson and Michael Karcher for their precious technical help!

Definition in file atrac3plusdec.c.

Function Documentation

static av_cold int atrac3p_decode_close ( AVCodecContext * avctx )

static

Definition at line 68 of file atrac3plusdec.c.

Referenced by atrac3p_decode_init().

static av_cold int set_channel_params ( ATRAC3PContext * ctx,

AVCodecContext * avctx

)

static

Definition at line 78 of file atrac3plusdec.c.

Referenced by atrac3p_decode_init().

static av_cold int atrac3p_decode_init ( AVCodecContext * avctx )

static

Definition at line 144 of file atrac3plusdec.c.

static void decode_residual_spectrum ( Atrac3pChanUnitCtx * ctx,

float out[2][ATRAC3P_FRAME_SAMPLES],

int num_channels,

AVCodecContext * avctx

)

static

Definition at line 198 of file atrac3plusdec.c.

Referenced by atrac3p_decode_frame().

static void reconstruct_frame ( ATRAC3PContext * ctx,

Atrac3pChanUnitCtx * ch_unit,

int num_channels,

AVCodecContext * avctx

)

static

Definition at line 262 of file atrac3plusdec.c.

Referenced by atrac3p_decode_frame().

static int atrac3p_decode_frame ( AVCodecContext * avctx,

void * data,

int * got_frame_ptr,

AVPacket * avpkt

)

static

Definition at line 327 of file atrac3plusdec.c.

Variable Documentation

AVCodec ff_atrac3p_decoder

Initial value:

= {

.name = "atrac3plus",

.long_name = NULL_IF_CONFIG_SMALL("ATRAC3+ (Adaptive TRansform Acoustic Coding 3+)"),

.type = AVMEDIA_TYPE_AUDIO,

.id = AV_CODEC_ID_ATRAC3P,

.priv_data_size = sizeof(ATRAC3PContext),

.init = atrac3p_decode_init,

.close = atrac3p_decode_close,

.decode = atrac3p_decode_frame,

}

Definition at line 387 of file atrac3plusdec.c.

Generated on Sun Mar 8 2015 02:35:18 for FFmpeg by doxygen 1.8.2