libavcodec/vc1dsp.c File Reference

VC-1 and WMV3 decoder. More...

#include "dsputil.h"

Go to the source code of this file.

Defines

#define VC1_MSPEL_FILTER_16B(DIR, TYPE)

Filter in case of 2 filters.

#define VC1_MSPEL_MC(OP, OPNAME)

Function used to do motion compensation with bicubic interpolation.

#define op_put(a, b) a = av_clip_uint8(b)

#define op_avg(a, b) a = (a + av_clip_uint8(b) + 1) >> 1

#define PUT_VC1_MSPEL(a, b)

Functions

static void vc1_v_overlap_c (uint8_t *src, int stride)

Apply overlap transform to horizontal edge.

static void vc1_h_overlap_c (uint8_t *src, int stride)

Apply overlap transform to vertical edge.

static av_always_inline int vc1_filter_line (uint8_t *src, int stride, int pq)

VC-1 in-loop deblocking filter for one line.

static void vc1_loop_filter (uint8_t *src, int step, int stride, int len, int pq)

VC-1 in-loop deblocking filter.

static void vc1_v_loop_filter4_c (uint8_t *src, int stride, int pq)

static void vc1_h_loop_filter4_c (uint8_t *src, int stride, int pq)

static void vc1_v_loop_filter8_c (uint8_t *src, int stride, int pq)

static void vc1_h_loop_filter8_c (uint8_t *src, int stride, int pq)

static void vc1_v_loop_filter16_c (uint8_t *src, int stride, int pq)

static void vc1_h_loop_filter16_c (uint8_t *src, int stride, int pq)

static void vc1_inv_trans_8x8_dc_c (uint8_t *dest, int linesize, DCTELEM *block)

Do inverse transform on 8x8 block.

static void vc1_inv_trans_8x8_c (DCTELEM block[64])

static void vc1_inv_trans_8x4_dc_c (uint8_t *dest, int linesize, DCTELEM *block)

Do inverse transform on 8x4 part of block.

static void vc1_inv_trans_8x4_c (uint8_t *dest, int linesize, DCTELEM *block)

static void vc1_inv_trans_4x8_dc_c (uint8_t *dest, int linesize, DCTELEM *block)

Do inverse transform on 4x8 parts of block.

static void vc1_inv_trans_4x8_c (uint8_t *dest, int linesize, DCTELEM *block)

static void vc1_inv_trans_4x4_dc_c (uint8_t *dest, int linesize, DCTELEM *block)

Do inverse transform on 4x4 part of block.

static void vc1_inv_trans_4x4_c (uint8_t *dest, int linesize, DCTELEM *block)

VC1_MSPEL_FILTER_16B (ver, uint8_t)

VC1_MSPEL_FILTER_16B (hor, int16_t)

static av_always_inline int vc1_mspel_filter (const uint8_t *src, int stride, int mode, int r)

Filter used to interpolate fractional pel values.

av_cold void ff_vc1dsp_init (DSPContext *dsp, AVCodecContext *avctx)

Detailed Description

VC-1 and WMV3 decoder.

Definition in file vc1dsp.c.

Define Documentation

#define op_avg	(	a,
		b		)	a = (a + av_clip_uint8(b) + 1) >> 1

Definition at line 577 of file vc1dsp.c.

#define op_put	(	a,
		b		)	a = av_clip_uint8(b)

Definition at line 576 of file vc1dsp.c.

#define PUT_VC1_MSPEL	(	a,
		b		)

Value:

static void put_vc1_mspel_mc ## a ## b ##_c(uint8_t *dst, const uint8_t *src, int stride, int rnd) { \
     put_vc1_mspel_mc(dst, src, stride, a, b, rnd);                         \
}\
static void avg_vc1_mspel_mc ## a ## b ##_c(uint8_t *dst, const uint8_t *src, int stride, int rnd) { \
     avg_vc1_mspel_mc(dst, src, stride, a, b, rnd);                         \
}

Definition at line 584 of file vc1dsp.c.

#define VC1_MSPEL_FILTER_16B	(	DIR,
		TYPE		)

Value:

static av_always_inline int vc1_mspel_ ## DIR ## _filter_16bits(const TYPE *src, int stride, int mode) \
{                                                                       \
    switch(mode){                                                       \
    case 0: /* no shift - should not occur */                           \
        return 0;                                                       \
    case 1: /* 1/4 shift */                                             \
        return -4*src[-stride] + 53*src[0] + 18*src[stride] - 3*src[stride*2]; \
    case 2: /* 1/2 shift */                                             \
        return -src[-stride] + 9*src[0] + 9*src[stride] - src[stride*2]; \
    case 3: /* 3/4 shift */                                             \
        return -3*src[-stride] + 18*src[0] + 53*src[stride] - 4*src[stride*2]; \
    }                                                                   \
    return 0; /* should not occur */                                    \
}

Filter in case of 2 filters.

Definition at line 481 of file vc1dsp.c.

#define VC1_MSPEL_MC	(	OP,
		OPNAME		)

Function used to do motion compensation with bicubic interpolation.

Definition at line 520 of file vc1dsp.c.

Function Documentation

av_cold void ff_vc1dsp_init	(	DSPContext *	dsp,
		AVCodecContext *	avctx
	)

Definition at line 611 of file vc1dsp.c.

Referenced by dsputil_init().

static av_always_inline int vc1_filter_line	(	uint8_t *	src,
		int	stride,
		int	pq
	)			`[static]`

VC-1 in-loop deblocking filter for one line.

Parameters:

	src	source block type
	stride	block stride
	pq	block quantizer

Returns:: whether other 3 pairs should be filtered or not

See also:: 8.6

Definition at line 89 of file vc1dsp.c.

Referenced by vc1_loop_filter().

static void vc1_h_loop_filter16_c	(	uint8_t *	src,
		int	stride,
		int	pq
	)			`[static]`

Definition at line 174 of file vc1dsp.c.

Referenced by ff_vc1dsp_init().

static void vc1_h_loop_filter4_c	(	uint8_t *	src,
		int	stride,
		int	pq
	)			`[static]`

Definition at line 154 of file vc1dsp.c.

Referenced by ff_vc1dsp_init().

static void vc1_h_loop_filter8_c	(	uint8_t *	src,
		int	stride,
		int	pq
	)			`[static]`

Definition at line 164 of file vc1dsp.c.

Referenced by ff_vc1dsp_init().

static void vc1_h_overlap_c	(	uint8_t *	src,
		int	stride
	)			`[static]`

Apply overlap transform to vertical edge.

Definition at line 58 of file vc1dsp.c.

Referenced by ff_vc1dsp_init().

static void vc1_inv_trans_4x4_c	(	uint8_t *	dest,
		int	linesize,
		DCTELEM *	block
	)			`[static]`

Definition at line 438 of file vc1dsp.c.

Referenced by ff_vc1dsp_init().

static void vc1_inv_trans_4x4_dc_c	(	uint8_t *	dest,
		int	linesize,
		DCTELEM *	block
	)			`[static]`

Do inverse transform on 4x4 part of block.

Definition at line 422 of file vc1dsp.c.

Referenced by ff_vc1dsp_init().

static void vc1_inv_trans_4x8_c	(	uint8_t *	dest,
		int	linesize,
		DCTELEM *	block
	)			`[static]`

Definition at line 365 of file vc1dsp.c.

Referenced by ff_vc1dsp_init().

static void vc1_inv_trans_4x8_dc_c	(	uint8_t *	dest,
		int	linesize,
		DCTELEM *	block
	)			`[static]`

Do inverse transform on 4x8 parts of block.

Definition at line 349 of file vc1dsp.c.

Referenced by ff_vc1dsp_init().

static void vc1_inv_trans_8x4_c	(	uint8_t *	dest,
		int	linesize,
		DCTELEM *	block
	)			`[static]`

Definition at line 292 of file vc1dsp.c.

Referenced by ff_vc1dsp_init().

static void vc1_inv_trans_8x4_dc_c	(	uint8_t *	dest,
		int	linesize,
		DCTELEM *	block
	)			`[static]`

Do inverse transform on 8x4 part of block.

Definition at line 272 of file vc1dsp.c.

Referenced by ff_vc1dsp_init().

static void vc1_inv_trans_8x8_c ( DCTELEM block[64] ) [static]

Definition at line 201 of file vc1dsp.c.

Referenced by ff_vc1dsp_init().

static void vc1_inv_trans_8x8_dc_c	(	uint8_t *	dest,
		int	linesize,
		DCTELEM *	block
	)			`[static]`

Do inverse transform on 8x8 block.

Definition at line 181 of file vc1dsp.c.

Referenced by ff_vc1dsp_init().

static void vc1_loop_filter	(	uint8_t *	src,
		int	step,
		int	stride,
		int	len,
		int	pq
	)			`[inline, static]`

VC-1 in-loop deblocking filter.

Parameters:

	src	source block type
	step	distance between horizontally adjacent elements
	stride	distance between vertically adjacent elements
	len	edge length to filter (4 or 8 pixels)
	pq	block quantizer

See also:: 8.6

Definition at line 133 of file vc1dsp.c.

Referenced by vc1_h_loop_filter16_c(), vc1_h_loop_filter4_c(), vc1_h_loop_filter8_c(), vc1_v_loop_filter16_c(), vc1_v_loop_filter4_c(), and vc1_v_loop_filter8_c().

static av_always_inline int vc1_mspel_filter	(	const uint8_t *	src,
		int	stride,
		int	mode,
		int	r
	)			`[static]`

Filter used to interpolate fractional pel values.

Definition at line 503 of file vc1dsp.c.

VC1_MSPEL_FILTER_16B	(	hor	,
		int16_t
	)

VC1_MSPEL_FILTER_16B	(	ver	,
		uint8_t
	)

static void vc1_v_loop_filter16_c	(	uint8_t *	src,
		int	stride,
		int	pq
	)			`[static]`

Definition at line 169 of file vc1dsp.c.

Referenced by ff_vc1dsp_init().

static void vc1_v_loop_filter4_c	(	uint8_t *	src,
		int	stride,
		int	pq
	)			`[static]`

Definition at line 149 of file vc1dsp.c.

Referenced by ff_vc1dsp_init().

static void vc1_v_loop_filter8_c	(	uint8_t *	src,
		int	stride,
		int	pq
	)			`[static]`

Definition at line 159 of file vc1dsp.c.

Referenced by ff_vc1dsp_init().

static void vc1_v_overlap_c	(	uint8_t *	src,
		int	stride
	)			`[static]`

Apply overlap transform to horizontal edge.

Definition at line 33 of file vc1dsp.c.

Referenced by ff_vc1dsp_init().


Defines
#define	VC1_MSPEL_FILTER_16B(DIR, TYPE)
	Filter in case of 2 filters.
#define	VC1_MSPEL_MC(OP, OPNAME)
	Function used to do motion compensation with bicubic interpolation.
#define	op_put(a, b) a = av_clip_uint8(b)
#define	op_avg(a, b) a = (a + av_clip_uint8(b) + 1) >> 1
#define	PUT_VC1_MSPEL(a, b)
Functions
static void	vc1_v_overlap_c (uint8_t *src, int stride)
	Apply overlap transform to horizontal edge.
static void	vc1_h_overlap_c (uint8_t *src, int stride)
	Apply overlap transform to vertical edge.
static av_always_inline int	vc1_filter_line (uint8_t *src, int stride, int pq)
	VC-1 in-loop deblocking filter for one line.
static void	vc1_loop_filter (uint8_t *src, int step, int stride, int len, int pq)
	VC-1 in-loop deblocking filter.
static void	vc1_v_loop_filter4_c (uint8_t *src, int stride, int pq)
static void	vc1_h_loop_filter4_c (uint8_t *src, int stride, int pq)
static void	vc1_v_loop_filter8_c (uint8_t *src, int stride, int pq)
static void	vc1_h_loop_filter8_c (uint8_t *src, int stride, int pq)
static void	vc1_v_loop_filter16_c (uint8_t *src, int stride, int pq)
static void	vc1_h_loop_filter16_c (uint8_t *src, int stride, int pq)
static void	vc1_inv_trans_8x8_dc_c (uint8_t dest, int linesize, DCTELEM block)
	Do inverse transform on 8x8 block.
static void	vc1_inv_trans_8x8_c (DCTELEM block[64])
static void	vc1_inv_trans_8x4_dc_c (uint8_t dest, int linesize, DCTELEM block)
	Do inverse transform on 8x4 part of block.
static void	vc1_inv_trans_8x4_c (uint8_t dest, int linesize, DCTELEM block)
static void	vc1_inv_trans_4x8_dc_c (uint8_t dest, int linesize, DCTELEM block)
	Do inverse transform on 4x8 parts of block.
static void	vc1_inv_trans_4x8_c (uint8_t dest, int linesize, DCTELEM block)
static void	vc1_inv_trans_4x4_dc_c (uint8_t dest, int linesize, DCTELEM block)
	Do inverse transform on 4x4 part of block.
static void	vc1_inv_trans_4x4_c (uint8_t dest, int linesize, DCTELEM block)
	VC1_MSPEL_FILTER_16B (ver, uint8_t)
	VC1_MSPEL_FILTER_16B (hor, int16_t)
static av_always_inline int	vc1_mspel_filter (const uint8_t *src, int stride, int mode, int r)
	Filter used to interpolate fractional pel values.
av_cold void	ff_vc1dsp_init (DSPContext dsp, AVCodecContext avctx)