IntraX8 frame subdecoder image manipulation routines. More...

#include "intrax8dsp.h"
#include "libavutil/common.h"
#include "libavutil/intreadwrite.h"

Macros
#define	area1 (0)

#define	area2 (8)

#define	area3 (8 + 8)

#define	area4 (8 + 8 + 1)

#define	area5 (8 + 8 + 1 + 8)

#define	area6 (8 + 8 + 1 + 16)

Functions
static void	x8_setup_spatial_compensation (const uint8_t restrict src, uint8_t restrict dst, ptrdiff_t stride, int range, int psum, int edges)
	Collect statistics and prepare the edge pixels required by the other spatial compensation functions. More...

static void	spatial_compensation_0 (const uint8_t restrict src, uint8_t restrict dst, ptrdiff_t stride)

static void	spatial_compensation_1 (const uint8_t restrict src, uint8_t restrict dst, ptrdiff_t stride)

static void	spatial_compensation_2 (const uint8_t restrict src, uint8_t restrict dst, ptrdiff_t stride)

static void	spatial_compensation_3 (const uint8_t restrict src, uint8_t restrict dst, ptrdiff_t stride)

static void	spatial_compensation_4 (const uint8_t restrict src, uint8_t restrict dst, ptrdiff_t stride)

static void	spatial_compensation_5 (const uint8_t restrict src, uint8_t restrict dst, ptrdiff_t stride)

static void	spatial_compensation_6 (const uint8_t restrict src, uint8_t restrict dst, ptrdiff_t stride)

static void	spatial_compensation_7 (const uint8_t restrict src, uint8_t restrict dst, ptrdiff_t stride)

static void	spatial_compensation_8 (const uint8_t restrict src, uint8_t restrict dst, ptrdiff_t stride)

static void	spatial_compensation_9 (const uint8_t restrict src, uint8_t restrict dst, ptrdiff_t stride)

static void	spatial_compensation_10 (const uint8_t restrict src, uint8_t restrict dst, ptrdiff_t stride)

static void	spatial_compensation_11 (const uint8_t restrict src, uint8_t restrict dst, ptrdiff_t stride)

static void	x8_loop_filter (uint8_t *ptr, const ptrdiff_t a_stride, const ptrdiff_t b_stride, int quant)

static void	x8_h_loop_filter (uint8_t *src, ptrdiff_t stride, int qscale)

static void	x8_v_loop_filter (uint8_t *src, ptrdiff_t stride, int qscale)

av_cold void	ff_intrax8dsp_init (IntraX8DSPContext *dsp)

Variables
static const uint16_t	zero_prediction_weights [64 *2]

Detailed Description

IntraX8 frame subdecoder image manipulation routines.

Definition in file intrax8dsp.c.

Macro Definition Documentation

◆ area1

#define area1 (0)

Definition at line 44 of file intrax8dsp.c.

◆ area2

#define area2 (8)

Definition at line 45 of file intrax8dsp.c.

◆ area3

#define area3 (8 + 8)

Definition at line 46 of file intrax8dsp.c.

◆ area4

#define area4 (8 + 8 + 1)

Definition at line 47 of file intrax8dsp.c.

◆ area5

#define area5 (8 + 8 + 1 + 8)

Definition at line 48 of file intrax8dsp.c.

◆ area6

#define area6 (8 + 8 + 1 + 16)

Definition at line 49 of file intrax8dsp.c.

Function Documentation

◆ x8_setup_spatial_compensation()

static void x8_setup_spatial_compensation	(	const uint8_t *restrict	src,
		uint8_t *restrict	dst,
		ptrdiff_t	stride,
		int *	range,
		int *	psum,
		int	edges
	)

static

Collect statistics and prepare the edge pixels required by the other spatial compensation functions.

Parameters

src	pointer to the beginning of the processed block
dst	pointer to emu_edge, edge pixels are stored the way other compensation routines do.
linesize	byte offset between 2 vertical pixels in the source image
range	pointer to the variable where the edge pixel range is to be stored (max-min values)
psum	pointer to the variable where the edge pixel sum is to be stored
edges	Informs this routine that the block is on an image border, so it has to interpolate the missing edge pixels. and some of the edge pixels should be interpolated, the flag has the following meaning: 1 - mb_x==0 - first block in the row, interpolate area #1,#2,#3; 2 - mb_y==0 - first row, interpolate area #3,#4,#5,#6; note: 1\|2 - mb_x==mb_y==0 - first block, use 0x80 value for all areas; 4 - mb_x>= (mb_width-1) last block in the row, interpolate area #5;

Definition at line 66 of file intrax8dsp.c.

Referenced by ff_intrax8dsp_init().

◆ spatial_compensation_0()

static void spatial_compensation_0	(	const uint8_t *restrict	src,
		uint8_t *restrict	dst,
		ptrdiff_t	stride
	)

static

Definition at line 165 of file intrax8dsp.c.

Referenced by ff_intrax8dsp_init().

◆ spatial_compensation_1()

static void spatial_compensation_1	(	const uint8_t *restrict	src,
		uint8_t *restrict	dst,
		ptrdiff_t	stride
	)

static

Definition at line 217 of file intrax8dsp.c.

Referenced by ff_intrax8dsp_init().

◆ spatial_compensation_2()

static void spatial_compensation_2	(	const uint8_t *restrict	src,
		uint8_t *restrict	dst,
		ptrdiff_t	stride
	)

static

Definition at line 228 of file intrax8dsp.c.

Referenced by ff_intrax8dsp_init().

◆ spatial_compensation_3()

static void spatial_compensation_3	(	const uint8_t *restrict	src,
		uint8_t *restrict	dst,
		ptrdiff_t	stride
	)

static

Definition at line 236 of file intrax8dsp.c.

Referenced by ff_intrax8dsp_init().

◆ spatial_compensation_4()

static void spatial_compensation_4	(	const uint8_t *restrict	src,
		uint8_t *restrict	dst,
		ptrdiff_t	stride
	)

static

Definition at line 244 of file intrax8dsp.c.

Referenced by ff_intrax8dsp_init().

◆ spatial_compensation_5()

static void spatial_compensation_5	(	const uint8_t *restrict	src,
		uint8_t *restrict	dst,
		ptrdiff_t	stride
	)

static

Definition at line 255 of file intrax8dsp.c.

Referenced by ff_intrax8dsp_init().

◆ spatial_compensation_6()

static void spatial_compensation_6	(	const uint8_t *restrict	src,
		uint8_t *restrict	dst,
		ptrdiff_t	stride
	)

static

Definition at line 270 of file intrax8dsp.c.

Referenced by ff_intrax8dsp_init().

◆ spatial_compensation_7()

static void spatial_compensation_7	(	const uint8_t *restrict	src,
		uint8_t *restrict	dst,
		ptrdiff_t	stride
	)

static

Definition at line 278 of file intrax8dsp.c.

Referenced by ff_intrax8dsp_init().

◆ spatial_compensation_8()

static void spatial_compensation_8	(	const uint8_t *restrict	src,
		uint8_t *restrict	dst,
		ptrdiff_t	stride
	)

static

Definition at line 293 of file intrax8dsp.c.

Referenced by ff_intrax8dsp_init().

◆ spatial_compensation_9()

static void spatial_compensation_9	(	const uint8_t *restrict	src,
		uint8_t *restrict	dst,
		ptrdiff_t	stride
	)

static

Definition at line 304 of file intrax8dsp.c.

Referenced by ff_intrax8dsp_init().

◆ spatial_compensation_10()

static void spatial_compensation_10	(	const uint8_t *restrict	src,
		uint8_t *restrict	dst,
		ptrdiff_t	stride
	)

static

Definition at line 315 of file intrax8dsp.c.

Referenced by ff_intrax8dsp_init().

◆ spatial_compensation_11()

static void spatial_compensation_11	(	const uint8_t *restrict	src,
		uint8_t *restrict	dst,
		ptrdiff_t	stride
	)

static

Definition at line 326 of file intrax8dsp.c.

Referenced by ff_intrax8dsp_init().

◆ x8_loop_filter()

static void x8_loop_filter	(	uint8_t *	ptr,
		const ptrdiff_t	a_stride,
		const ptrdiff_t	b_stride,
		int	quant
	)

static

Definition at line 337 of file intrax8dsp.c.

Referenced by x8_h_loop_filter(), and x8_v_loop_filter().

◆ x8_h_loop_filter()

static void x8_h_loop_filter	(	uint8_t *	src,
		ptrdiff_t	stride,
		int	qscale
	)

static

Definition at line 431 of file intrax8dsp.c.

Referenced by ff_intrax8dsp_init().

◆ x8_v_loop_filter()

static void x8_v_loop_filter	(	uint8_t *	src,
		ptrdiff_t	stride,
		int	qscale
	)

static

Definition at line 436 of file intrax8dsp.c.

Referenced by ff_intrax8dsp_init().

◆ ff_intrax8dsp_init()

av_cold void ff_intrax8dsp_init ( IntraX8DSPContext * dsp )

Definition at line 441 of file intrax8dsp.c.

Referenced by ff_intrax8_common_init().

Variable Documentation

◆ zero_prediction_weights

const uint16_t zero_prediction_weights[64 *2]

static

Initial value:

= {
    640,  640, 669,  480, 708,  354, 748, 257,
    792,  198, 760,  143, 808,  101, 772,  72,
    480,  669, 537,  537, 598,  416, 661, 316,
    719,  250, 707,  185, 768,  134, 745,  97,
    354,  708, 416,  598, 488,  488, 564, 388,
    634,  317, 642,  241, 716,  179, 706, 132,
    257,  748, 316,  661, 388,  564, 469, 469,
    543,  395, 571,  311, 655,  238, 660, 180,
    198,  792, 250,  719, 317,  634, 395, 543,
    469,  469, 507,  380, 597,  299, 616, 231,
    161,  855, 206,  788, 266,  710, 340, 623,
    411,  548, 455,  455, 548,  366, 576, 288,
    122,  972, 159,  914, 211,  842, 276, 758,
    341,  682, 389,  584, 483,  483, 520, 390,
    110, 1172, 144, 1107, 193, 1028, 254, 932,
    317,  846, 366,  731, 458,  611, 499, 499,
}

Definition at line 146 of file intrax8dsp.c.

Referenced by spatial_compensation_0().

Macros

Functions

Variables

Detailed Description

Macro Definition Documentation

◆ area1

◆ area2

◆ area3

◆ area4

◆ area5

◆ area6

Function Documentation

◆ x8_setup_spatial_compensation()

◆ spatial_compensation_0()

◆ spatial_compensation_1()

◆ spatial_compensation_2()

◆ spatial_compensation_3()

◆ spatial_compensation_4()

◆ spatial_compensation_5()

◆ spatial_compensation_6()

◆ spatial_compensation_7()

◆ spatial_compensation_8()

◆ spatial_compensation_9()

◆ spatial_compensation_10()

◆ spatial_compensation_11()

◆ x8_loop_filter()

◆ x8_h_loop_filter()

◆ x8_v_loop_filter()

◆ ff_intrax8dsp_init()

Variable Documentation

◆ zero_prediction_weights