image.c File Reference

#include "image.h"
#include <limits.h>
#include <stdlib.h>
#include "strategies/strategies-ipol.h"
#include "strategies/strategies-picture.h"
#include "threads.h"

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Macros
#define	BLIT_PIXELS_CASE(n)
	BLock Image Transfer from one buffer to another. More...

Functions
kvz_picture *	kvz_image_alloc_420 (const int32_t width, const int32_t height)
	Allocate a new image with 420. More...
kvz_picture *	kvz_image_alloc (enum kvz_chroma_format chroma_format, const int32_t width, const int32_t height)
	Allocate a new image. More...
void	kvz_image_free (kvz_picture *const im)
	Free an image. More...
kvz_picture *	kvz_image_copy_ref (kvz_picture *im)
	Get a new pointer to an image. More...
kvz_picture *	kvz_image_make_subimage (kvz_picture *const orig_image, const unsigned x_offset, const unsigned y_offset, const unsigned width, const unsigned height)
yuv_t *	kvz_yuv_t_alloc (int luma_size, int chroma_size)
void	kvz_yuv_t_free (yuv_t *yuv)
static uint32_t	reg_sad_maybe_optimized (const kvz_pixel *const data1, const kvz_pixel *const data2, const int32_t width, const int32_t height, const uint32_t stride1, const uint32_t stride2, optimized_sad_func_ptr_t optimized_sad)
static unsigned	cor_sad (const kvz_pixel *pic_data, const kvz_pixel *ref_data, int block_width, int block_height, unsigned pic_stride)
	Diagonally interpolate SAD outside the frame. More...
static unsigned	image_interpolated_sad (const kvz_picture *pic, const kvz_picture *ref, int pic_x, int pic_y, int ref_x, int ref_y, int block_width, int block_height, optimized_sad_func_ptr_t optimized_sad)
	Handle special cases of comparing blocks that are not completely inside the frame. More...
unsigned	kvz_image_calc_sad (const kvz_picture *pic, const kvz_picture *ref, int pic_x, int pic_y, int ref_x, int ref_y, int block_width, int block_height, optimized_sad_func_ptr_t optimized_sad)
	Calculate interpolated SAD between two blocks. More...
unsigned	kvz_image_calc_satd (const kvz_picture *pic, const kvz_picture *ref, int pic_x, int pic_y, int ref_x, int ref_y, int block_width, int block_height)
	Calculate interpolated SATD between two blocks. More...
void	kvz_pixels_blit (const kvz_pixel *const orig, kvz_pixel *const dst, const unsigned width, const unsigned height, const unsigned orig_stride, const unsigned dst_stride)

Macro Definition Documentation

BLIT_PIXELS_CASE

#define BLIT_PIXELS_CASE

(

n

)

Value:

  case n:\
  for (y = 0; y < n; ++y) {\
    memcpy(&dst[y*dst_stride], &orig[y*orig_stride], n * sizeof(kvz_pixel));\
  }\
  break;

It's a stupidly simple loop that copies pixels.

Parameters

orig	Start of the originating buffer.
dst	Start of the destination buffer.
width	Width of the copied region.
height	Height of the copied region.
orig_stride	Width of a row in the originating buffer.
dst_stride	Width of a row in the destination buffer.

This should be inlined, but it's defined here for now to see if Visual Studios LTCG will inline it.

Function Documentation

cor_sad()

static unsigned cor_sad ( const kvz_pixel *  pic_data, const kvz_pixel *  ref_data, int  block_width, int  block_height, unsigned  pic_stride  )

static

Parameters

data1	Starting point of the first picture.
data2	Starting point of the second picture.
width	Width of the region for which SAD is calculated.
height	Height of the region for which SAD is calculated.
width	Width of the pixel array.

Returns

Sum of Absolute Differences

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image_interpolated_sad()

static unsigned image_interpolated_sad ( const kvz_picture *  pic, const kvz_picture *  ref, int  pic_x, int  pic_y, int  ref_x, int  ref_y, int  block_width, int  block_height, optimized_sad_func_ptr_t  optimized_sad  )

static

Parameters

pic	First frame.
ref	Second frame.
pic_x	X coordinate of the first block.
pic_y	Y coordinate of the first block.
ref_x	X coordinate of the second block.
ref_y	Y coordinate of the second block.
block_width	Width of the blocks.
block_height	Height of the blocks.

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kvz_image_alloc()

kvz_picture * kvz_image_alloc	(	enum kvz_chroma_format	chroma_format,
		const int32_t	width,
		const int32_t	height
	)

Returns

image pointer or NULL on failure

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kvz_image_alloc_420()

kvz_picture * kvz_image_alloc_420	(	const int32_t	width,
		const int32_t	height
	)

This function signature is part of the libkvz API.

Returns

image pointer or NULL on failure

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kvz_image_calc_sad()

unsigned kvz_image_calc_sad	(	const kvz_picture *	pic,
		const kvz_picture *	ref,
		int	pic_x,
		int	pic_y,
		int	ref_x,
		int	ref_y,
		int	block_width,
		int	block_height,
		optimized_sad_func_ptr_t	optimized_sad
	)

Parameters

pic	Image for the block we are trying to find.
ref	Image where we are trying to find the block.

Returns

Sum of absolute differences

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kvz_image_calc_satd()

unsigned kvz_image_calc_satd	(	const kvz_picture *	pic,
		const kvz_picture *	ref,
		int	pic_x,
		int	pic_y,
		int	ref_x,
		int	ref_y,
		int	block_width,
		int	block_height
	)

Parameters

pic	Image for the block we are trying to find.
ref	Image where we are trying to find the block.

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kvz_image_copy_ref()

kvz_picture * kvz_image_copy_ref

(

kvz_picture *

im

)

Increment reference count and return the image.

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kvz_image_free()

void kvz_image_free

(

kvz_picture *const

im

)

Decrement reference count of the image and deallocate associated memory if no references exist any more.

Parameters

im	image to free

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kvz_image_make_subimage()

kvz_picture * kvz_image_make_subimage	(	kvz_picture *const	orig_image,
		const unsigned	x_offset,
		const unsigned	y_offset,
		const unsigned	width,
		const unsigned	height
	)

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kvz_pixels_blit()

void kvz_pixels_blit	(	const kvz_pixel *const	orig,
		kvz_pixel *const	dst,
		const unsigned	width,
		const unsigned	height,
		const unsigned	orig_stride,
		const unsigned	dst_stride
	)

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kvz_yuv_t_alloc()

yuv_t * kvz_yuv_t_alloc	(	int	luma_size,
		int	chroma_size
	)

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kvz_yuv_t_free()

void kvz_yuv_t_free

(

yuv_t *

yuv

)

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reg_sad_maybe_optimized()

static uint32_t reg_sad_maybe_optimized ( const kvz_pixel *const  data1, const kvz_pixel *const  data2, const int32_t  width, const int32_t  height, const uint32_t  stride1, const uint32_t  stride2, optimized_sad_func_ptr_t  optimized_sad  )

inlinestatic

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