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adxdec.c File Reference

SEGA CRI adx codecs. More...

#include "libavutil/intreadwrite.h"
#include "avcodec.h"
#include "adx.h"
#include "get_bits.h"
#include "internal.h"

Go to the source code of this file.


static av_cold int adx_decode_init (AVCodecContext *avctx)
static int adx_decode (ADXContext *c, int16_t *out, int offset, const uint8_t *in, int ch)
 Decode 32 samples from 18 bytes. More...
static int adx_decode_frame (AVCodecContext *avctx, void *data, int *got_frame_ptr, AVPacket *avpkt)
static void adx_decode_flush (AVCodecContext *avctx)


AVCodec ff_adpcm_adx_decoder

Detailed Description

SEGA CRI adx codecs.

Reference documents: http://ku-www.ss.titech.ac.jp/~yatsushi/adx.html adx2wav & wav2adx http://www.geocities.co.jp/Playtown/2004/

Definition in file adxdec.c.

Function Documentation

static av_cold int adx_decode_init ( AVCodecContext avctx)

Definition at line 37 of file adxdec.c.

static int adx_decode ( ADXContext c,
int16_t *  out,
int  offset,
const uint8_t in,
int  ch 

Decode 32 samples from 18 bytes.

A 16-bit scalar value is applied to 32 residuals, which then have a 2nd-order LPC filter applied to it to form the output signal for a single channel.

Definition at line 65 of file adxdec.c.

Referenced by adx_decode_frame().

static int adx_decode_frame ( AVCodecContext avctx,
void data,
int got_frame_ptr,
AVPacket avpkt 

Definition at line 95 of file adxdec.c.

static void adx_decode_flush ( AVCodecContext avctx)

Definition at line 170 of file adxdec.c.

Variable Documentation

AVCodec ff_adpcm_adx_decoder
Initial value:
= {
.name = "adpcm_adx",
.priv_data_size = sizeof(ADXContext),
.capabilities = AV_CODEC_CAP_DR1,
static void flush(AVCodecContext *avctx)
static av_cold int adx_decode_init(AVCodecContext *avctx)
Definition: adxdec.c:37
static av_cold int init(AVCodecContext *avctx)
Definition: avrndec.c:35
static void decode(AVCodecContext *dec_ctx, AVPacket *pkt, AVFrame *frame, FILE *outfile)
Definition: decode_audio.c:42
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:179
static void adx_decode_flush(AVCodecContext *avctx)
Definition: adxdec.c:170
static int adx_decode_frame(AVCodecContext *avctx, void *data, int *got_frame_ptr, AVPacket *avpkt)
Definition: adxdec.c:95
Audio sample formats.
Definition: samplefmt.h:58
Definition: adx.h:42
static enum AVSampleFormat sample_fmts[]
Definition: adpcmenc.c:701
signed 16 bits, planar
Definition: samplefmt.h:67
#define AV_CODEC_CAP_DR1
Codec uses get_buffer() for allocating buffers and supports custom allocators.
Definition: avcodec.h:1002

Definition at line 177 of file adxdec.c.