intrax8.h File Reference

#include "blockdsp.h"
#include "get_bits.h"
#include "intrax8dsp.h"
#include "wmv2dsp.h"
#include "mpegpicture.h"

Go to the source code of this file.

Data Structures
struct	IntraX8Context

Functions
int	ff_intrax8_common_init (AVCodecContext *avctx, IntraX8Context *w, int16_t(*block)[64], int block_last_index[12], int mb_width, int mb_height)
	Initialize IntraX8 frame decoder. More...
void	ff_intrax8_common_end (IntraX8Context *w)
	Destroy IntraX8 frame structure. More...
int	ff_intrax8_decode_picture (IntraX8Context *w, Picture *pict, GetBitContext *gb, int *mb_x, int *mb_y, int quant, int halfpq, int loopfilter, int lowdelay)
	Decode single IntraX8 frame. More...

Function Documentation

ff_intrax8_common_init()

int ff_intrax8_common_init	(	AVCodecContext *	avctx,
		IntraX8Context *	w,
		int16_t(*)	block[64],
		int	block_last_index[12],
		int	mb_width,
		int	mb_height
	)

Initialize IntraX8 frame decoder.

Parameters

avctx	pointer to AVCodecContext
w	pointer to IntraX8Context
block	pointer to block array
block_last_index	pointer to index array
mb_width	macroblock width
mb_height	macroblock height

Returns

0 on success, a negative AVERROR value on error

Definition at line 694 of file intrax8.c.

Referenced by vc1_decode_init_alloc_tables(), and wmv2_decode_init().

ff_intrax8_common_end()

void ff_intrax8_common_end

(

IntraX8Context *

w

)

Destroy IntraX8 frame structure.

Parameters

w	pointer to IntraX8Context

Definition at line 733 of file intrax8.c.

Referenced by ff_vc1_decode_end(), and wmv2_decode_end().

ff_intrax8_decode_picture()

int ff_intrax8_decode_picture	(	IntraX8Context *	w,
		Picture *	pict,
		GetBitContext *	gb,
		int *	mb_x,
		int *	mb_y,
		int	quant,
		int	halfpq,
		int	loopfilter,
		int	lowdelay
	)

Decode single IntraX8 frame.

lowres decoding is theoretically impossible.

Parameters

w	pointer to IntraX8Context
pict	the output Picture containing an AVFrame
gb	open bitstream reader
mb_x	pointer to the x coordinate of the current macroblock
mb_y	pointer to the y coordinate of the current macroblock
dquant	doubled quantizer, it would be odd in case of VC-1 halfpq==1.
quant_offset	offset away from zero
loopfilter	enable filter after decoding a block

Definition at line 738 of file intrax8.c.

Referenced by ff_vc1_decode_blocks(), and ff_wmv2_decode_secondary_picture_header().