wnv1.c File Reference

#include "libavutil/thread.h"
#include "avcodec.h"
#include "codec_internal.h"
#include "decode.h"
#include "get_bits.h"

Go to the source code of this file.

Macros
#define	BITSTREAM_READER_LE
#define	CODE_VLC_BITS   9

Functions
static int	wnv1_get_code (GetBitContext *gb, int shift, int base_value)
static int	decode_frame (AVCodecContext *avctx, AVFrame *p, int *got_frame, AVPacket *avpkt)
static av_cold void	wnv1_init_static (void)
static av_cold int	decode_init (AVCodecContext *avctx)

Variables
static const uint8_t	code_tab [16][2]
static VLCElem	code_vlc [1<< CODE_VLC_BITS]
const FFCodec	ff_wnv1_decoder

Detailed Description

Winnov WNV1 codec.

Definition in file wnv1.c.

Macro Definition Documentation

BITSTREAM_READER_LE

#define BITSTREAM_READER_LE

Definition at line 29 of file wnv1.c.

CODE_VLC_BITS

#define CODE_VLC_BITS   9

Definition at line 41 of file wnv1.c.

Function Documentation

wnv1_get_code()

static int wnv1_get_code ( GetBitContext *  gb, int  shift, int  base_value  )

inlinestatic

Definition at line 45 of file wnv1.c.

Referenced by decode_frame().

decode_frame()

static int decode_frame ( AVCodecContext *  avctx, AVFrame *  p, int *  got_frame, AVPacket *  avpkt  )

static

Definition at line 55 of file wnv1.c.

wnv1_init_static()

static av_cold void wnv1_init_static ( void  )

static

Definition at line 115 of file wnv1.c.

Referenced by decode_init().

decode_init()

static av_cold int decode_init ( AVCodecContext *  avctx )

static

Definition at line 123 of file wnv1.c.

Variable Documentation

code_tab

const uint8_t code_tab[16][2]

static

Initial value:

= {
    {  7, 1 }, {  8, 3 }, {  6, 3 }, { 9, 4 }, {  5, 4 }, { 10, 5 }, {  4, 5 },
    { 11, 6 }, {  3, 6 }, { 12, 7 }, { 2, 7 }, { 13, 8 }, {  1, 8 }, { 14, 9 },
    {  0, 9 }, { 15, 8 }
}

Definition at line 35 of file wnv1.c.

Referenced by wnv1_init_static().

code_vlc

VLCElem code_vlc[1<< CODE_VLC_BITS]

static

Definition at line 42 of file wnv1.c.

Referenced by decode_channel(), wnv1_get_code(), and wnv1_init_static().

ff_wnv1_decoder

const FFCodec ff_wnv1_decoder

Initial value:

= {
    .p.name         = "wnv1",
    CODEC_LONG_NAME("Winnov WNV1"),
    .p.type         = AVMEDIA_TYPE_VIDEO,
    .p.id           = AV_CODEC_ID_WNV1,
    .init           = decode_init,
    FF_CODEC_DECODE_CB(decode_frame),
    .p.capabilities = AV_CODEC_CAP_DR1,
}

Definition at line 137 of file wnv1.c.