cu.c File Reference

#include <string.h>
#include <stdlib.h>
#include "cu.h"
#include "threads.h"

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Functions
cu_info_t *	kvz_cu_array_at (cu_array_t *cua, unsigned x_px, unsigned y_px)
const cu_info_t *	kvz_cu_array_at_const (const cu_array_t *cua, unsigned x_px, unsigned y_px)
cu_array_t *	kvz_cu_array_alloc (const int width, const int height)
	Allocate a CU array.
cu_array_t *	kvz_cu_subarray (cu_array_t *base, const unsigned x_offset, const unsigned y_offset, const unsigned width, const unsigned height)
void	kvz_cu_array_free (cu_array_t **cua_ptr)
cu_array_t *	kvz_cu_array_copy_ref (cu_array_t *cua)
	Get a new pointer to a cu array.
void	kvz_cu_array_copy_from_lcu (cu_array_t *dst, int dst_x, int dst_y, const lcu_t *src)
	Copy an lcu to a cu array.

Variables
const uint8_t	kvz_part_mode_num_parts []
	Number of PUs in a CU.
const uint8_t	kvz_part_mode_offsets [][4][2]
	PU offsets.
const uint8_t	kvz_part_mode_sizes [][4][2]
	PU sizes.

Function Documentation

kvz_cu_array_alloc()

cu_array_t * kvz_cu_array_alloc	(	const int	width,
		const int	height
	)

Parameters

width	width of the array in luma pixels
height	height of the array in luma pixels

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kvz_cu_array_at()

cu_info_t * kvz_cu_array_at	(	cu_array_t *	cua,
		unsigned	x_px,
		unsigned	y_px
	)

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kvz_cu_array_at_const()

const cu_info_t * kvz_cu_array_at_const	(	const cu_array_t *	cua,
		unsigned	x_px,
		unsigned	y_px
	)

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kvz_cu_array_copy_from_lcu()

void kvz_cu_array_copy_from_lcu	(	cu_array_t *	dst,
		int	dst_x,
		int	dst_y,
		const lcu_t *	src
	)

All values are in luma pixels.

Parameters

dst	destination array
dst_x	x-coordinate of the left edge of the copied area in dst
dst_y	y-coordinate of the top edge of the copied area in dst
src	source lcu

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kvz_cu_array_copy_ref()

cu_array_t * kvz_cu_array_copy_ref

(

cu_array_t *

cua

)

Increment reference count and return the cu array.

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kvz_cu_array_free()

void kvz_cu_array_free

(

cu_array_t **

cua_ptr

)

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kvz_cu_subarray()

cu_array_t * kvz_cu_subarray	(	cu_array_t *	base,
		const unsigned	x_offset,
		const unsigned	y_offset,
		const unsigned	width,
		const unsigned	height
	)

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Variable Documentation

kvz_part_mode_num_parts

const uint8_t kvz_part_mode_num_parts[]

Initial value:

= {
  1, 
  2, 
  2, 
  4, 
  2, 
  2, 
  2, 
  2, 
}

Indexed by part_mode_t values.

kvz_part_mode_offsets

const uint8_t kvz_part_mode_offsets[][4][2]

Initial value:

= {
  { {0, 0}                         }, 
  { {0, 0}, {0, 2}                 }, 
  { {0, 0}, {2, 0}                 }, 
  { {0, 0}, {2, 0}, {0, 2}, {2, 2} }, 
  { {0, 0}, {0, 1}                 }, 
  { {0, 0}, {0, 3}                 }, 
  { {0, 0}, {1, 0}                 }, 
  { {0, 0}, {3, 0}                 }, 
}

Indexed by [part mode][PU number][axis].

Units are 1/4 of the width of the CU.

kvz_part_mode_sizes

const uint8_t kvz_part_mode_sizes[][4][2]

Initial value:

= {
  { {4, 4}                         }, 
  { {4, 2}, {4, 2}                 }, 
  { {2, 4}, {2, 4}                 }, 
  { {2, 2}, {2, 2}, {2, 2}, {2, 2} }, 
  { {4, 1}, {4, 3}                 }, 
  { {4, 3}, {4, 1}                 }, 
  { {1, 4}, {3, 4}                 }, 
  { {3, 4}, {1, 4}                 }, 
}

Indexed by [part mode][PU number][axis].

Units are 1/4 of the width of the CU.