ws-snd1.c File Reference

Westwood SNDx codecs. More...

#include <stdint.h>
#include "libavutil/channel_layout.h"
#include "libavutil/common.h"
#include "libavutil/intreadwrite.h"
#include "avcodec.h"
#include "codec_internal.h"
#include "decode.h"

Go to the source code of this file.

Functions
static av_cold int	ws_snd_decode_init (AVCodecContext *avctx)
static int	ws_snd_decode_frame (AVCodecContext *avctx, AVFrame *frame, int *got_frame_ptr, AVPacket *avpkt)

Variables
static const int8_t	ws_adpcm_4bit []
const FFCodec	ff_ws_snd1_decoder

Detailed Description

Westwood SNDx codecs.

Reference documents about VQA format and its audio codecs can be found here: http://www.multimedia.cx

Definition in file ws-snd1.c.

Function Documentation

ws_snd_decode_init()

static av_cold int ws_snd_decode_init ( AVCodecContext * avctx )

static

Definition at line 45 of file ws-snd1.c.

ws_snd_decode_frame()

static int ws_snd_decode_frame ( AVCodecContext * avctx, AVFrame * frame, int * got_frame_ptr, AVPacket * avpkt )

static

Definition at line 54 of file ws-snd1.c.

Variable Documentation

ws_adpcm_4bit

const int8_t ws_adpcm_4bit[]

static

Initial value:

= {
    -9, -8, -6, -5, -4, -3, -2, -1,
     0,  1,  2,  3,  4,  5,  6,  8
}

Definition at line 40 of file ws-snd1.c.

Referenced by ws_snd_decode_frame().

ff_ws_snd1_decoder

const FFCodec ff_ws_snd1_decoder

Initial value:

= {
    .p.name         = "ws_snd1",
    CODEC_LONG_NAME("Westwood Audio (SND1)"),
    .p.type         = AVMEDIA_TYPE_AUDIO,
    .p.id           = AV_CODEC_ID_WESTWOOD_SND1,
    .init           = ws_snd_decode_init,
    FF_CODEC_DECODE_CB(ws_snd_decode_frame),
    .p.capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_CHANNEL_CONF,
}

Definition at line 173 of file ws-snd1.c.