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	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 void	vc1_inv_trans_8x8_c (DCTELEM block[64])
	Do inverse transform on 8x8 block.
static void	vc1_inv_trans_8x4_c (uint8_t *dest, int linesize, DCTELEM *block)
	Do inverse transform on 8x4 part of block.
static void	vc1_inv_trans_4x8_c (uint8_t *dest, int linesize, DCTELEM *block)
	Do inverse transform on 4x8 parts of block.
static void	vc1_inv_trans_4x4_c (uint8_t *dest, int linesize, DCTELEM *block)
	Do inverse transform on 4x4 part of 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.
static void	vc1_mspel_mc (uint8_t *dst, const uint8_t *src, int stride, int hmode, int vmode, int rnd)
	Function used to do motion compensation with bicubic interpolation.
void	ff_put_vc1_mspel_mc00_c (uint8_t *dst, const uint8_t *src, int stride, int rnd)
void	ff_vc1dsp_init (DSPContext *dsp, AVCodecContext *avctx)

---

Detailed Description

VC-1 and WMV3 decoder.

Definition in file vc1dsp.c.

---

Define Documentation

#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) { \
     vc1_mspel_mc(dst, src, stride, a, b, rnd);                         \
}

Definition at line 411 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 312 of file vc1dsp.c.

---

Function Documentation

void ff_put_vc1_mspel_mc00_c	(	uint8_t *	dst,
		const uint8_t *	src,
		int	stride,
		int	rnd
	)

Referenced by ff_vc1dsp_init().

void ff_vc1dsp_init	(	DSPContext *	dsp,
		AVCodecContext *	avctx
	)

Definition at line 435 of file vc1dsp.c.

Referenced by dsputil_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]

Do inverse transform on 4x4 part of block.

Definition at line 269 of file vc1dsp.c.

Referenced by ff_vc1dsp_init().

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

Do inverse transform on 4x8 parts of block.

Definition at line 212 of file vc1dsp.c.

Referenced by ff_vc1dsp_init().

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

Do inverse transform on 8x4 part of block.

Definition at line 155 of file vc1dsp.c.

Referenced by ff_vc1dsp_init().

static void vc1_inv_trans_8x8_c

(

DCTELEM

block[64]

)

[static]

Do inverse transform on 8x8 block.

Definition at line 84 of file vc1dsp.c.

Referenced by ff_vc1dsp_init().

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 334 of file vc1dsp.c.

Referenced by vc1_mspel_mc().

VC1_MSPEL_FILTER_16B	(	hor	,
		int16_t
	)

VC1_MSPEL_FILTER_16B	(	ver	,
		uint8_t
	)

static void vc1_mspel_mc	(	uint8_t *	dst,
		const uint8_t *	src,
		int	stride,
		int	hmode,
		int	vmode,
		int	rnd
	)			[static]

Function used to do motion compensation with bicubic interpolation.

Definition at line 351 of file vc1dsp.c.

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().