Gather

Perform the Gather operation with a binary mask. More...

int	rapp_gather_u8 (uint8_t *restrict pack, int pack_dim, const uint8_t *restrict src, int src_dim, const uint8_t *restrict map, int map_dim, int width, int height, int rows)
	Gather 8-bit pixels designated by a binary mask.
int	rapp_gather_bin (uint8_t *restrict pack, const uint8_t *restrict src, int src_dim, const uint8_t *restrict map, int map_dim, int width, int height)
	Gather binary pixels designated by a binary mask.

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Detailed Description

Perform the Gather operation with a binary mask.

All images must be aligned.

Next section: Scatter

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Function Documentation

int rapp_gather_u8	(	uint8_t *restrict	pack,
		int	pack_dim,
		const uint8_t *restrict	src,
		int	src_dim,
		const uint8_t *restrict	map,
		int	map_dim,
		int	width,
		int	height,
		int	rows
	)

Gather 8-bit pixels designated by a binary mask.

Parameters:

[out]	pack	Pack pixel buffer.
	pack_dim	Row dimension of the pack buffer. It is only needed if rows are more than 1.
[in]	src	Source pixel buffer.
	src_dim	Row dimension of the source buffer.
	map	Map pixel buffer.
	map_dim	Row dimension of the map buffer.
	width	Image width in pixels.
	height	Image height in pixels.
	rows	The number of rows to gather. This also determines height of the pack buffer.

Returns:

The number of pixels gathered per row, which is equal to the number of set pixels in the map, a negative error code on error.

int rapp_gather_bin	(	uint8_t *restrict	pack,
		const uint8_t *restrict	src,
		int	src_dim,
		const uint8_t *restrict	map,
		int	map_dim,
		int	width,
		int	height
	)

Gather binary pixels designated by a binary mask.

Parameters:

[out]	pack	Pack pixel buffer.
[in]	src	Source pixel buffer.
	src_dim	Row dimension of the source buffer.
[in]	map	Map pixel buffer.
	map_dim	Row dimension of the map buffer.
	width	Image width in pixels.
	height	Image height in pixels.

Returns:

The number of pixels gathered, or a negative error code on error.