RV30/40 4x4 block decoding functions

Functions
static int	rv34_decode_cbp (GetBitContext *gb, RV34VLC *vlc, int table)
	Decode coded block pattern.
static void	decode_coeff (DCTELEM *dst, int coef, int esc, GetBitContext *gb, VLC *vlc)
	Get one coefficient value from the bistream and store it.
static void	decode_subblock (DCTELEM *dst, int code, const int is_block2, GetBitContext *gb, VLC *vlc)
	Decode 2x2 subblock of coefficients.
static void	rv34_decode_block (DCTELEM *dst, GetBitContext *gb, RV34VLC *rvlc, int fc, int sc)
	Decode coefficients for 4x4 block.
static void	rv34_dequant4x4 (DCTELEM *block, int Qdc, int Q)
	Dequantize ordinary 4x4 block.
static void	rv34_dequant4x4_16x16 (DCTELEM *block, int Qdc, int Q)
	Dequantize 4x4 block of DC values for 16x16 macroblock.

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Function Documentation

static void decode_coeff	(	DCTELEM *	dst,
		int	coef,
		int	esc,
		GetBitContext *	gb,
		VLC *	vlc
	)			[inline, static]

Get one coefficient value from the bistream and store it.

Definition at line 289 of file rv34.c.

Referenced by decode_subblock().

static void decode_subblock	(	DCTELEM *	dst,
		int	code,
		const int	is_block2,
		GetBitContext *	gb,
		VLC *	vlc
	)			[inline, static]

Decode 2x2 subblock of coefficients.

Definition at line 309 of file rv34.c.

Referenced by rv34_decode_block().

static void rv34_decode_block	(	DCTELEM *	dst,
		GetBitContext *	gb,
		RV34VLC *	rvlc,
		int	fc,
		int	sc
	)			[inline, static]

Decode coefficients for 4x4 block.

This is done by filling 2x2 subblocks with decoded coefficients in this order (the same for subblocks and subblock coefficients): o--o / / o--o

Definition at line 339 of file rv34.c.

Referenced by rv34_decode_macroblock().

static int rv34_decode_cbp	(	GetBitContext *	gb,
		RV34VLC *	vlc,
		int	table
	)			[static]

Decode coded block pattern.

Definition at line 256 of file rv34.c.

Referenced by rv34_decode_mb_header().

static void rv34_dequant4x4	(	DCTELEM *	block,
		int	Qdc,
		int	Q
	)			[inline, static]

Dequantize ordinary 4x4 block.

Todo:

optimize

Definition at line 369 of file rv34.c.

Referenced by rv34_decode_macroblock().

static void rv34_dequant4x4_16x16	(	DCTELEM *	block,
		int	Qdc,
		int	Q
	)			[inline, static]

Dequantize 4x4 block of DC values for 16x16 macroblock.

Todo:

optimize

Definition at line 383 of file rv34.c.

Referenced by rv34_decode_macroblock().