hvirtual/quicktime/ffmpeg/libavcodec/wnv1.c File Reference

#include "avcodec.h"
#include "common.h"
#include "bitstream.h"

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Data Structures
struct	WNV1Context
Defines
#define	CODE_VLC_BITS   9
Functions
static int	wnv1_get_code (WNV1Context *w, int base_value)
static int	decode_frame (AVCodecContext *avctx, void *data, int *data_size, uint8_t *buf, int buf_size)
static int	decode_init (AVCodecContext *avctx)
Variables
static uint16_t	code_tab [16][2]
static VLC	code_vlc
AVCodec	wnv1_decoder

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Detailed Description

Winnov WNV1 codec.

Definition in file wnv1.c.

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Define Documentation

#define CODE_VLC_BITS   9

Definition at line 45 of file wnv1.c.

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Function Documentation

static int decode_frame	(	AVCodecContext *	avctx,
		void *	data,
		int *	data_size,
		uint8_t *	buf,
		int	buf_size
	)			[static]

Definition at line 59 of file wnv1.c.

References av_log(), AV_LOG_ERROR, ff_reverse, WNV1Context::gb, AVCodecContext::get_buffer, AVCodecContext::height, init_get_bits(), WNV1Context::pic, AVCodecContext::priv_data, AVCodecContext::release_buffer, WNV1Context::shift, AVCodecContext::width, and wnv1_get_code().

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static int decode_init

(

AVCodecContext *

avctx

)

[static]

Definition at line 119 of file wnv1.c.

References WNV1Context::avctx, code_tab, CODE_VLC_BITS, init_vlc(), AVCodecContext::pix_fmt, PIX_FMT_YUV422P, AVCodecContext::priv_data, and VLC::table.

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static int wnv1_get_code	(	WNV1Context *	w,
		int	base_value
	)			[inline, static]

Definition at line 49 of file wnv1.c.

References CODE_VLC_BITS, ff_reverse, WNV1Context::gb, get_bits(), get_vlc2(), WNV1Context::shift, and VLC::table.

Referenced by decode_frame().

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Variable Documentation

uint16_t code_tab[16][2] [static]

Initial value:

{
{0x1FD,9}, {0xFD,8}, {0x7D,7}, {0x3D,6}, {0x1D,5}, {0x0D,4}, {0x005,3},
{0x000,1}, 
{0x004,3}, {0x0C,4}, {0x1C,5}, {0x3C,6}, {0x7C,7}, {0xFC,8}, {0x1FC,9}, {0xFF,8}
}

Definition at line 39 of file wnv1.c.

Referenced by decode_init().

VLC code_vlc [static]

Definition at line 46 of file wnv1.c.

AVCodec wnv1_decoder

Initial value:

 {
    "wnv1",
    CODEC_TYPE_VIDEO,
    CODEC_ID_WNV1,
    sizeof(WNV1Context),
    decode_init,
    NULL,
    NULL,
    decode_frame,
    CODEC_CAP_DR1,
}

Definition at line 134 of file wnv1.c.

Referenced by avcodec_register_all().