mpix/op_resize.h

Implementing new resizing operations. More...

Data Structures
struct	mpix_resize_op

Macros
#define	MPIX_REGISTER_RESIZE_OP(id, fn, fmt)
	Define a format conversion operation.

Functions
void	mpix_resize_frame_raw24 (const uint8_t *src_buf, size_t src_width, size_t src_height, uint8_t *dst_buf, size_t dst_width, size_t dst_height)
	Resize an 24-bit per pixel frame by subsampling the pixels horizontally/vertically.
void	mpix_resize_frame_raw16 (const uint8_t *src_buf, size_t src_width, size_t src_height, uint8_t *dst_buf, size_t dst_width, size_t dst_height)
	Resize an 16-bit per pixel frame by subsampling the pixels horizontally/vertically.
void	mpix_resize_frame_raw8 (const uint8_t *src_buf, size_t src_width, size_t src_height, uint8_t *dst_buf, size_t dst_width, size_t dst_height)
	Resize an 8-bit per pixel frame by subsampling the pixels horizontally/vertically.

Detailed Description

Implementing new resizing operations.

SPDX-License-Identifier: Apache-2.0

Macro Definition Documentation

MPIX_REGISTER_RESIZE_OP

#define MPIX_REGISTER_RESIZE_OP	(		id,
			fn,
			fmt
	)

Value:

    const struct mpix_resize_op mpix_resize_op_##id = {                                        \
        .base.name = ("resize_" #id),                                                      \
        .base.format_src = (MPIX_FMT_##fmt),                                                  \
        .base.format_dst = (MPIX_FMT_##fmt),                                                  \
        .base.window_size = 1,                                                             \
        .base.run = (fn),                                                                  \
    }

Define a format conversion operation.

Invoking this macro suffices for mpix_image_convert() to include the extra format.

Parameters

id	Short identifier to differentiate operations of the same type.
fn	Function converting one input line.
fmt	The pixel format of the data resized.

Function Documentation

mpix_resize_frame_raw16()

void mpix_resize_frame_raw16	(	const uint8_t *	src_buf,
		size_t	src_width,
		size_t	src_height,
		uint8_t *	dst_buf,
		size_t	dst_width,
		size_t	dst_height
	)

Resize an 16-bit per pixel frame by subsampling the pixels horizontally/vertically.

Parameters

src_buf	Input buffer to resize
src_width	Width of the input in number of pixels.
src_height	Height of the input in number of pixels.
dst_buf	Output buffer in which the stretched/compressed is stored.
dst_width	Width of the output in number of pixels.
dst_height	Height of the output in number of pixels.

mpix_resize_frame_raw24()

void mpix_resize_frame_raw24	(	const uint8_t *	src_buf,
		size_t	src_width,
		size_t	src_height,
		uint8_t *	dst_buf,
		size_t	dst_width,
		size_t	dst_height
	)

Resize an 24-bit per pixel frame by subsampling the pixels horizontally/vertically.

Parameters

src_buf	Input buffer to resize
src_width	Width of the input in number of pixels.
src_height	Height of the input in number of pixels.
dst_buf	Output buffer in which the stretched/compressed is stored.
dst_width	Width of the output in number of pixels.
dst_height	Height of the output in number of pixels.

mpix_resize_frame_raw8()

void mpix_resize_frame_raw8	(	const uint8_t *	src_buf,
		size_t	src_width,
		size_t	src_height,
		uint8_t *	dst_buf,
		size_t	dst_width,
		size_t	dst_height
	)

Resize an 8-bit per pixel frame by subsampling the pixels horizontally/vertically.

Parameters

src_buf	Input buffer to resize
src_width	Width of the input in number of pixels.
src_height	Height of the input in number of pixels.
dst_buf	Output buffer in which the stretched/compressed is stored.
dst_width	Width of the output in number of pixels.
dst_height	Height of the output in number of pixels.