wavarc.c File Reference

#include "libavutil/internal.h"
#include "libavutil/intreadwrite.h"
#include "avcodec.h"
#include "codec_internal.h"
#include "decode.h"
#include "get_bits.h"
#include "bytestream.h"
#include "mathops.h"
#include "unary.h"

Go to the source code of this file.

Data Structures
struct	WavArcContext

Functions
static av_cold int	wavarc_init (AVCodecContext *avctx)
static unsigned	get_urice (GetBitContext *gb, int k)
static int	get_srice (GetBitContext *gb, int k)
static void	do_stereo (WavArcContext *s, int ch, int correlated, int len)
static int	decode_0cpy (AVCodecContext *avctx, WavArcContext *s, GetBitContext *gb)
static int	decode_1dif (AVCodecContext *avctx, WavArcContext *s, GetBitContext *gb)
static int	decode_2slp (AVCodecContext *avctx, WavArcContext *s, GetBitContext *gb)
static int	ac_init (AVCodecContext *avctx, WavArcContext *s, GetBitContext *gb)
static uint16_t	ac_get_prob (WavArcContext *s)
static uint8_t	ac_map_symbol (WavArcContext *s, uint16_t prob)
static int	ac_normalize (AVCodecContext *avctx, WavArcContext *s, GetBitContext *gb)
static void	ac_init_model (WavArcContext *s)
static int	ac_read_model (AVCodecContext *avctx, WavArcContext *s, GetBitContext *gb)
static int	decode_5elp (AVCodecContext *avctx, WavArcContext *s, GetBitContext *gb)
static int	wavarc_decode (AVCodecContext *avctx, AVFrame *frame, int *got_frame_ptr, AVPacket *pkt)
static av_cold int	wavarc_close (AVCodecContext *avctx)

Variables
const FFCodec	ff_wavarc_decoder

Function Documentation

wavarc_init()

static av_cold int wavarc_init ( AVCodecContext *  avctx )

static

Definition at line 64 of file wavarc.c.

get_urice()

static unsigned get_urice ( GetBitContext *  gb, int  k  )

static

Definition at line 121 of file wavarc.c.

Referenced by decode_1dif(), decode_2slp(), decode_5elp(), and get_srice().

get_srice()

static int get_srice ( GetBitContext *  gb, int  k  )

static

Definition at line 130 of file wavarc.c.

Referenced by decode_1dif(), decode_2slp(), and decode_5elp().

do_stereo()

static void do_stereo ( WavArcContext *  s, int  ch, int  correlated, int  len  )

static

Definition at line 137 of file wavarc.c.

Referenced by decode_1dif(), decode_2slp(), and decode_5elp().

decode_0cpy()

static int decode_0cpy ( AVCodecContext *  avctx, WavArcContext *  s, GetBitContext *  gb  )

static

Definition at line 166 of file wavarc.c.

Referenced by wavarc_decode().

decode_1dif()

static int decode_1dif ( AVCodecContext *  avctx, WavArcContext *  s, GetBitContext *  gb  )

static

Definition at line 190 of file wavarc.c.

Referenced by wavarc_decode().

decode_2slp()

static int decode_2slp ( AVCodecContext *  avctx, WavArcContext *  s, GetBitContext *  gb  )

static

Definition at line 286 of file wavarc.c.

Referenced by wavarc_decode().

ac_init()

static int ac_init ( AVCodecContext *  avctx, WavArcContext *  s, GetBitContext *  gb  )

static

Definition at line 402 of file wavarc.c.

Referenced by decode_5elp().

ac_get_prob()

static uint16_t ac_get_prob ( WavArcContext *  s )

static

Definition at line 415 of file wavarc.c.

Referenced by decode_5elp().

ac_map_symbol()

static uint8_t ac_map_symbol ( WavArcContext *  s, uint16_t  prob  )

static

Definition at line 421 of file wavarc.c.

Referenced by decode_5elp().

ac_normalize()

static int ac_normalize ( AVCodecContext *  avctx, WavArcContext *  s, GetBitContext *  gb  )

static

Definition at line 434 of file wavarc.c.

Referenced by decode_5elp().

ac_init_model()

static void ac_init_model ( WavArcContext *  s )

static

Definition at line 477 of file wavarc.c.

Referenced by ac_read_model().

ac_read_model()

static int ac_read_model ( AVCodecContext *  avctx, WavArcContext *  s, GetBitContext *  gb  )

static

Definition at line 485 of file wavarc.c.

Referenced by decode_5elp().

decode_5elp()

static int decode_5elp ( AVCodecContext *  avctx, WavArcContext *  s, GetBitContext *  gb  )

static

Definition at line 518 of file wavarc.c.

Referenced by wavarc_decode().

wavarc_decode()

static int wavarc_decode ( AVCodecContext *  avctx, AVFrame *  frame, int *  got_frame_ptr, AVPacket *  pkt  )

static

Definition at line 761 of file wavarc.c.

wavarc_close()

static av_cold int wavarc_close ( AVCodecContext *  avctx )

static

Definition at line 865 of file wavarc.c.

Variable Documentation

ff_wavarc_decoder

const FFCodec ff_wavarc_decoder

Initial value:

= {
    .p.name           = "wavarc",
    CODEC_LONG_NAME("Waveform Archiver"),
    .p.type           = AVMEDIA_TYPE_AUDIO,
    .p.id             = AV_CODEC_ID_WAVARC,
    .priv_data_size   = sizeof(WavArcContext),
    .init             = wavarc_init,
    FF_CODEC_DECODE_CB(wavarc_decode),
    .close            = wavarc_close,
    .p.capabilities   = AV_CODEC_CAP_DR1 |
 
                        AV_CODEC_CAP_SUBFRAMES |
 
                        AV_CODEC_CAP_DELAY,
    .p.sample_fmts    = (const enum AVSampleFormat[]) { AV_SAMPLE_FMT_U8P,
                                                        AV_SAMPLE_FMT_S16P,
                                                        AV_SAMPLE_FMT_NONE },
}

Definition at line 875 of file wavarc.c.