Blender: scaling.cc File Reference

Blender V4.3

#include <cmath>
#include "BLI_math_vector.hh"
#include "BLI_task.hh"
#include "BLI_utildefines.h"
#include "MEM_guardedalloc.h"
#include "IMB_filter.hh"
#include "IMB_imbuf.hh"
#include "IMB_imbuf_types.hh"
#include "IMB_interp.hh"
#include "BLI_sys_types.h"

Go to the source code of this file.

Classes
struct	ScaleDownX
struct	ScaleDownY
struct	ScaleUpX
struct	ScaleUpY

Typedefs
using	ScaleFunction
using	float2
using	float3
using	float4
using	uchar4

Functions
static void	imb_half_x_no_alloc (ImBuf ibuf2, ImBuf ibuf1)
ImBuf *	IMB_half_x (ImBuf *ibuf1)
static void	imb_half_y_no_alloc (ImBuf ibuf2, ImBuf ibuf1)
ImBuf *	IMB_half_y (ImBuf *ibuf1)
MINLINE void	straight_uchar_to_premul_ushort (ushort result[4], const uchar color[4])
MINLINE void	premul_ushort_to_straight_uchar (uchar *result, const ushort color[4])
void	imb_onehalf_no_alloc (ImBuf ibuf2, ImBuf ibuf1)
ImBuf *	IMB_onehalf (ImBuf *ibuf1)
static void	alloc_scale_dst_buffers (const ImBuf ibuf, uint newx, uint newy, uchar4 r_dst_byte, float *r_dst_float)
static float4	load_pixel (const uchar4 *ptr)
static float4	load_pixel (const float *ptr)
static float4	load_pixel (const float2 *ptr)
static float4	load_pixel (const float3 *ptr)
static float4	load_pixel (const float4 *ptr)
static void	store_pixel (float4 pix, uchar4 *ptr)
static void	store_pixel (float4 pix, float *ptr)
static void	store_pixel (float4 pix, float2 *ptr)
static void	store_pixel (float4 pix, float3 *ptr)
static void	store_pixel (float4 pix, float4 *ptr)
template<typename T>
static void	instantiate_pixel_op (T &, const ImBuf ibuf, int newx, int newy, uchar4 dst_byte, float *dst_float, bool threaded)
static void	scale_down_x_func (const ImBuf ibuf, int newx, int newy, uchar4 dst_byte, float *dst_float, bool threaded)
static void	scale_down_y_func (const ImBuf ibuf, int newx, int newy, uchar4 dst_byte, float *dst_float, bool threaded)
static void	scale_up_x_func (const ImBuf ibuf, int newx, int newy, uchar4 dst_byte, float *dst_float, bool threaded)
static void	scale_up_y_func (const ImBuf ibuf, int newx, int newy, uchar4 dst_byte, float *dst_float, bool threaded)
static void	scale_with_function (ImBuf *ibuf, int newx, int newy, ScaleFunction func, bool threaded)
static void	imb_scale_box (ImBuf *ibuf, uint newx, uint newy, bool threaded)
template<typename T>
static void	scale_nearest (const T src, T dst, int ibufx, int ibufy, int newx, int newy, blender::IndexRange y_range)
static void	scale_nearest_func (const ImBuf ibuf, int newx, int newy, uchar4 dst_byte, float *dst_float, bool threaded)
static void	scale_bilinear_func (const ImBuf ibuf, int newx, int newy, uchar4 dst_byte, float *dst_float, bool threaded)
bool	IMB_scale (ImBuf *ibuf, uint newx, uint newy, IMBScaleFilter filter, bool threaded)

Typedef Documentation

◆ float2

using blender::float2

Definition at line 611 of file BLI_math_vector_types.hh.

◆ float3

using blender::float3

Definition at line 612 of file BLI_math_vector_types.hh.

◆ float4

using blender::float4

Definition at line 613 of file BLI_math_vector_types.hh.

◆ ScaleFunction

using ScaleFunction

Initial value:

void (*)(

const ImBuf *ibuf, int newx, int newy, uchar4 *dst_byte, float *dst_float, bool threaded)

Definition IMB_imbuf_types.hh:185

Definition types_uchar4.h:14

Definition at line 650 of file scaling.cc.

◆ uchar4

using blender::uchar4

Definition at line 592 of file BLI_math_vector_types.hh.

Function Documentation

◆ alloc_scale_dst_buffers()

void alloc_scale_dst_buffers	(	const ImBuf *	ibuf,
		uint	newx,
		uint	newy,
		uchar4 **	r_dst_byte,
		float **	r_dst_float )

static

Definition at line 342 of file scaling.cc.

References ImBuf::byte_buffer, ImBuf::channels, ImBufByteBuffer::data, ImBufFloatBuffer::data, ImBuf::float_buffer, MEM_freeN(), and MEM_mallocN.

Referenced by scale_with_function().

◆ IMB_half_x()

ImBuf * IMB_half_x ( ImBuf * ibuf1 )

Definition at line 88 of file scaling.cc.

References ImBuf::byte_buffer, ImBufByteBuffer::data, ImBufFloatBuffer::data, ImBuf::flags, ImBuf::float_buffer, IMB_allocImBuf(), IMB_dupImBuf(), imb_half_x_no_alloc(), ImBuf::planes, ImBuf::x, and ImBuf::y.

Referenced by IMB_onehalf().

◆ imb_half_x_no_alloc()

void imb_half_x_no_alloc	(	ImBuf *	ibuf2,
		ImBuf *	ibuf1 )

static

Definition at line 29 of file scaling.cc.

References b, ImBuf::byte_buffer, ImBufByteBuffer::data, ImBufFloatBuffer::data, ImBuf::float_buffer, ImBuf::x, x, ImBuf::y, and y.

Referenced by IMB_half_x(), and imb_onehalf_no_alloc().

◆ IMB_half_y()

ImBuf * IMB_half_y ( ImBuf * ibuf1 )

Definition at line 180 of file scaling.cc.

References ImBuf::byte_buffer, ImBufByteBuffer::data, ImBufFloatBuffer::data, ImBuf::flags, ImBuf::float_buffer, IMB_allocImBuf(), IMB_dupImBuf(), imb_half_y_no_alloc(), ImBuf::planes, ImBuf::x, and ImBuf::y.

Referenced by IMB_onehalf().

◆ imb_half_y_no_alloc()

void imb_half_y_no_alloc	(	ImBuf *	ibuf2,
		ImBuf *	ibuf1 )

static

Definition at line 113 of file scaling.cc.

References b, ImBuf::byte_buffer, ImBufByteBuffer::data, ImBufFloatBuffer::data, ImBuf::float_buffer, ImBuf::x, x, ImBuf::y, and y.

Referenced by IMB_half_y(), and imb_onehalf_no_alloc().

◆ IMB_onehalf()

ImBuf * IMB_onehalf ( ImBuf * ibuf1 )

Definition at line 314 of file scaling.cc.

References ImBuf::byte_buffer, ImBufByteBuffer::data, ImBufFloatBuffer::data, ImBuf::flags, ImBuf::float_buffer, IMB_allocImBuf(), IMB_half_x(), IMB_half_y(), imb_onehalf_no_alloc(), ImBuf::planes, ImBuf::x, and ImBuf::y.

Referenced by IMB_makemipmap().

◆ imb_onehalf_no_alloc()

void imb_onehalf_no_alloc	(	ImBuf *	ibuf2,
		ImBuf *	ibuf1 )

Result in ibuf2, scaling should be done correctly.

Definition at line 236 of file scaling.cc.

References ImBuf::byte_buffer, ImBufByteBuffer::data, ImBufFloatBuffer::data, ImBuf::float_buffer, imb_addrectImBuf(), imb_half_x_no_alloc(), imb_half_y_no_alloc(), premul_ushort_to_straight_uchar(), straight_uchar_to_premul_ushort(), ImBuf::x, x, ImBuf::y, and y.

Referenced by IMB_onehalf(), and IMB_remakemipmap().

◆ IMB_scale()

bool IMB_scale	(	ImBuf *	ibuf,
		unsigned int	newx,
		unsigned int	newy,
		IMBScaleFilter	filter,
		bool	threaded = true )

Scale/resize image to new dimensions. Return true if ibuf is modified.

Definition at line 779 of file scaling.cc.

References Bilinear, BLI_assert_msg, BLI_assert_unreachable, Box, filter(), imb_scale_box(), Nearest, scale_bilinear_func(), scale_nearest_func(), scale_with_function(), ImBuf::x, and ImBuf::y.

Referenced by accessor_get_ibuf(), BKE_icon_geom_rasterize(), BKE_image_preview(), BKE_image_scale(), BKE_previewimg_ensure(), blend_file_thumb_from_camera(), blend_file_thumb_from_screenshot(), get_undistorted_ibuf(), icon_copy_rect(), icon_verify_datatoc(), image_scale_exec(), imb_gpu_get_data(), imb_scale_bilinear(), imb_scale_bilinear_st(), imb_scale_box(), imb_scale_box_st(), imb_scale_nearest(), imb_scale_nearest_st(), imb_stereo3d_squeeze_ImBuf(), imb_stereo3d_squeeze_rect(), imb_stereo3d_squeeze_rectf(), imb_stereo3d_unsqueeze_ImBuf(), Freestyle::Canvas::loadMap(), movieclip_build_proxy_ibuf(), py_imbuf_resize(), blender::imbuf::tests::scale_2x_smaller(), blender::imbuf::tests::scale_fractional_larger(), blender::imbuf::tests::scale_to_1x1(), blender::seq::scale_to_thumbnail_size(), seq_proxy_build_frame(), thumb_create_ex(), ui_draw_but_IMAGE(), ui_tooltip_from_clip(), update_do_scale(), and wm_block_splash_image().

◆ imb_scale_box()

void imb_scale_box	(	ImBuf *	ibuf,
		uint	newx,
		uint	newy,
		bool	threaded )

static

Definition at line 679 of file scaling.cc.

References scale_down_x_func(), scale_down_y_func(), scale_up_x_func(), scale_up_y_func(), scale_with_function(), ImBuf::x, x, ImBuf::y, and y.

Referenced by IMB_scale(), and test_scaling_perf().

◆ instantiate_pixel_op()

template<typename T>

void instantiate_pixel_op	(	T &	,
		const ImBuf *	ibuf,
		int	newx,
		int	newy,
		uchar4 *	dst_byte,
		float *	dst_float,
		bool	threaded )

static

Definition at line 591 of file scaling.cc.

References ImBuf::byte_buffer, ImBuf::channels, ImBufByteBuffer::data, ImBufFloatBuffer::data, ImBuf::float_buffer, T, ImBuf::x, and ImBuf::y.

Referenced by scale_down_x_func(), scale_down_y_func(), scale_up_x_func(), and scale_up_y_func().

◆ load_pixel() [1/5]

float4 load_pixel ( const float * ptr )

inlinestatic

Definition at line 370 of file scaling.cc.

References ptr.

◆ load_pixel() [2/5]

float4 load_pixel ( const float2 * ptr )

inlinestatic

Definition at line 374 of file scaling.cc.

References ptr.

◆ load_pixel() [3/5]

float4 load_pixel ( const float3 * ptr )

inlinestatic

Definition at line 378 of file scaling.cc.

References ptr.

◆ load_pixel() [4/5]

float4 load_pixel ( const float4 * ptr )

inlinestatic

Definition at line 382 of file scaling.cc.

References ptr.

◆ load_pixel() [5/5]

float4 load_pixel ( const uchar4 * ptr )

inlinestatic

Definition at line 366 of file scaling.cc.

References ptr.

Referenced by ScaleDownX::op(), ScaleDownY::op(), ScaleUpX::op(), and ScaleUpY::op().

◆ premul_ushort_to_straight_uchar()

MINLINE void premul_ushort_to_straight_uchar	(	uchar *	result,
		const ushort	color[4] )

Definition at line 218 of file scaling.cc.

References color, MINLINE, result, and unit_ushort_to_uchar.

Referenced by imb_onehalf_no_alloc().

◆ scale_bilinear_func()

void scale_bilinear_func	(	const ImBuf *	ibuf,
		int	newx,
		int	newy,
		uchar4 *	dst_byte,
		float *	dst_float,
		bool	threaded )

static

Definition at line 750 of file scaling.cc.

References ImBuf::channels, ImBufFloatBuffer::data, float, ImBuf::float_buffer, blender::imbuf::interpolate_bilinear_byte(), blender::math::interpolate_bilinear_fl(), blender::threading::parallel_for(), v, ImBuf::x, x, ImBuf::y, and y.

Referenced by IMB_scale().

◆ scale_down_x_func()

void scale_down_x_func	(	const ImBuf *	ibuf,
		int	newx,
		int	newy,
		uchar4 *	dst_byte,
		float *	dst_float,
		bool	threaded )

static

Definition at line 622 of file scaling.cc.

References instantiate_pixel_op().

Referenced by imb_scale_box().

◆ scale_down_y_func()

void scale_down_y_func	(	const ImBuf *	ibuf,
		int	newx,
		int	newy,
		uchar4 *	dst_byte,
		float *	dst_float,
		bool	threaded )

static

Definition at line 629 of file scaling.cc.

References instantiate_pixel_op().

Referenced by imb_scale_box().

◆ scale_nearest()

template<typename T>

void scale_nearest	(	const T *	src,
		T *	dst,
		int	ibufx,
		int	ibufy,
		int	newx,
		int	newy,
		blender::IndexRange	y_range )

static

Definition at line 696 of file scaling.cc.

References blender::IndexRange::first(), T, UNUSED_VARS, x, and y.

Referenced by scale_nearest_func().

◆ scale_nearest_func()

void scale_nearest_func	(	const ImBuf *	ibuf,
		int	newx,
		int	newy,
		uchar4 *	dst_byte,
		float *	dst_float,
		bool	threaded )

static

Definition at line 717 of file scaling.cc.

References ImBuf::byte_buffer, ImBuf::channels, ImBufByteBuffer::data, ImBufFloatBuffer::data, ImBuf::float_buffer, blender::threading::parallel_for(), scale_nearest(), ImBuf::x, and ImBuf::y.

Referenced by IMB_scale().

◆ scale_up_x_func()

void scale_up_x_func	(	const ImBuf *	ibuf,
		int	newx,
		int	newy,
		uchar4 *	dst_byte,
		float *	dst_float,
		bool	threaded )

static

Definition at line 636 of file scaling.cc.

References instantiate_pixel_op().

Referenced by imb_scale_box().

◆ scale_up_y_func()

void scale_up_y_func	(	const ImBuf *	ibuf,
		int	newx,
		int	newy,
		uchar4 *	dst_byte,
		float *	dst_float,
		bool	threaded )

static

Definition at line 643 of file scaling.cc.

References instantiate_pixel_op().

Referenced by imb_scale_box().

◆ scale_with_function()

void scale_with_function	(	ImBuf *	ibuf,
		int	newx,
		int	newy,
		ScaleFunction	func,
		bool	threaded )

static

Definition at line 653 of file scaling.cc.

References alloc_scale_dst_buffers(), IB_TAKE_OWNERSHIP, IMB_assign_byte_buffer(), IMB_assign_float_buffer(), imb_freerectfloatImBuf(), imb_freerectImBuf(), ImBuf::x, and ImBuf::y.

Referenced by IMB_scale(), and imb_scale_box().

◆ store_pixel() [1/5]

void store_pixel	(	float4	pix,
		float *	ptr )

inlinestatic

Definition at line 390 of file scaling.cc.

References ptr.

◆ store_pixel() [2/5]

void store_pixel	(	float4	pix,
		float2 *	ptr )

inlinestatic

Definition at line 394 of file scaling.cc.

References ptr.

◆ store_pixel() [3/5]

void store_pixel	(	float4	pix,
		float3 *	ptr )

inlinestatic

Definition at line 398 of file scaling.cc.

References ptr.

◆ store_pixel() [4/5]

void store_pixel	(	float4	pix,
		float4 *	ptr )

inlinestatic

Definition at line 402 of file scaling.cc.

References ptr.

◆ store_pixel() [5/5]

void store_pixel	(	float4	pix,
		uchar4 *	ptr )

inlinestatic

Definition at line 386 of file scaling.cc.

References ptr, and blender::math::round().

Referenced by ScaleDownX::op(), ScaleDownY::op(), ScaleUpX::op(), and ScaleUpY::op().

◆ straight_uchar_to_premul_ushort()

MINLINE void straight_uchar_to_premul_ushort	(	ushort	result[4],
		const uchar	color[4] )

Definition at line 208 of file scaling.cc.

References color, MINLINE, and result.

Referenced by imb_onehalf_no_alloc().