sp500_letterbox_params Struct Reference

sp500_letterbox_params Struct Reference#

Mobilint REGULUS: sp500_letterbox_params Struct Reference

Mobilint REGULUS v4.1

SP500 DSP API

Letterbox geometry and options. More...

#include <sp500/letterbox.h>

Data Fields
int32_t	src_w
int32_t	src_h
int32_t	dst_w
int32_t	dst_h
int32_t	channels
int32_t	interp
uint8_t	pad_value
uint8_t	center
uint8_t	scale_up
uint8_t	swap_rb
uint32_t	reserved [4]

Detailed Description

Letterbox geometry and options.

Fill this with sp500_letterbox_params_init() and then set the fields you care about. src_w and src_h have no useful default and must be set. Every dimension must be in 1..65535.

Definition at line 66 of file letterbox.h.

Field Documentation

◆ src_w

int32_t sp500_letterbox_params::src_w

source width in pixels (required)

Definition at line 68 of file letterbox.h.

◆ src_h

int32_t sp500_letterbox_params::src_h

source height in pixels (required)

Definition at line 69 of file letterbox.h.

◆ dst_w

int32_t sp500_letterbox_params::dst_w

destination width in pixels; default 640

Definition at line 70 of file letterbox.h.

◆ dst_h

int32_t sp500_letterbox_params::dst_h

destination height in pixels; default 640

Definition at line 71 of file letterbox.h.

◆ channels

int32_t sp500_letterbox_params::channels

interleaved channels, BGR or RGB = 3; default 3

Definition at line 72 of file letterbox.h.

◆ interp

int32_t sp500_letterbox_params::interp

one of SP500_RESIZE_*; default SP500_RESIZE_BILINEAR

Definition at line 73 of file letterbox.h.

◆ pad_value

uint8_t sp500_letterbox_params::pad_value

border fill, applied to every channel; default 114

Definition at line 74 of file letterbox.h.

◆ center

uint8_t sp500_letterbox_params::center

1: split the border evenly; 0: pad bottom-right only. Default 1

Definition at line 75 of file letterbox.h.

◆ scale_up

uint8_t sp500_letterbox_params::scale_up

1: allow upscaling a smaller source; 0: never scale above 1.0. Default 1

Definition at line 77 of file letterbox.h.

◆ swap_rb

uint8_t sp500_letterbox_params::swap_rb

1: swap channels 0 and 2 while writing, turning BGR into RGB or back. Requires channels == 3. Default 0

Definition at line 79 of file letterbox.h.

◆ reserved

uint32_t sp500_letterbox_params::reserved[4]

must be zero

Definition at line 81 of file letterbox.h.

The documentation for this struct was generated from the following file:

sp500/letterbox.h