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image.h File Reference

A reference counted YUV pixel buffer.

#include "global.h"
#include "kvazaar.h"
#include "strategies/optimized_sad_func_ptr_t.h"
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Data Structures

struct  lcu_yuv_t
 
struct  yuv_t
 
struct  yuv_im_t
 

Functions

kvz_picturekvz_image_alloc_420 (const int32_t width, const int32_t height)
 Allocate a new image with 420.
 
kvz_picturekvz_image_alloc (enum kvz_chroma_format chroma_format, const int32_t width, const int32_t height)
 Allocate a new image.
 
void kvz_image_free (kvz_picture *im)
 Free an image.
 
kvz_picturekvz_image_copy_ref (kvz_picture *im)
 Get a new pointer to an image.
 
kvz_picturekvz_image_make_subimage (kvz_picture *const orig_image, const unsigned x_offset, const unsigned y_offset, const unsigned width, const unsigned height)
 
yuv_tkvz_yuv_t_alloc (int luma_size, int chroma_size)
 
void kvz_yuv_t_free (yuv_t *yuv)
 
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.
 
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.
 
void kvz_pixels_blit (const kvz_pixel *orig, kvz_pixel *dst, unsigned width, unsigned height, unsigned orig_stride, unsigned dst_stride)
 

Function Documentation

◆ 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
picImage for the block we are trying to find.
refImage 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
picImage for the block we are trying to find.
refImage 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
imimage 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 * orig,
kvz_pixel * dst,
unsigned width,
unsigned height,
unsigned orig_stride,
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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