Fast colourspace transformations
[Image I/O]

Collaboration diagram for Fast colourspace transformations:

Mimas provides several fast algorithms for converting from different YUV formats to RGBA- and grey-level images. More...

Functions
void	mimas::rgb_to_rgba (const char *in, int width, int height, char *out)
	Colour conversion from RGB to RGBA.
void	mimas::yv12_to_rgba (const char *in, int width, int height, char *out)
	Colour conversion from YV12 to RGBA.
void	mimas::yuv420p_to_rgba (const char *in, int width, int height, char *out)
	Colour conversion from YUV420p to RGBA.
void	mimas::yuv420p_to_grey (const char *in, int width, int height, char *out)
	Colour conversion from YUV420p to grey.
void	mimas::yv12_to_grey (const char *in, int width, int height, char *out)
	Colour conversion from YV12 to Grey.
void	mimas::rgba_to_yv12 (const char *in, int width, int height, char *out)
	Colour conversion from RGBA to YV12.
void	mimas::uyvy_to_rgba (const char *in, int width, int height, char *out)
	Colour conversion from UYVY to RGBA.
void	mimas::yuy2_to_rgba (const char *in, int width, int height, char *out)
	Colour conversion from YUY2 to RGBA.
void	mimas::yuy2_to_grey (const char *in, int width, int height, char *out)
	Colour conversion from YUY2 to grey.

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Detailed Description

Mimas provides several fast algorithms for converting from different YUV formats to RGBA- and grey-level images.

There also is a transformation from RGBA to the YV12 format.

The methods are used internally by the image-I/O classes.

See https://www.fourcc.org/yuv.php and https://www.fourcc.org/fccyvrgb.php for more information on colourspaces.

See also:

Image I/O

Author:

Bala Amavasai (bpa@amavasai.org)

Jan Wedekind (jan at wedesoft.de)

Date:

Fri Jan 10 15:53:56 UTC 2006

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Function Documentation

void mimas::rgb_to_rgba	(	const char *	in,
		int	width,
		int	height,
		char *	out
	)

Colour conversion from RGB to RGBA.

Adding A-byte to RGB.

Parameters:

	in	Input RGB data (8 bit)
	width	Width of input image
	height	Height of input image
	out	Pointer to store RGBA data in

Author:

Jan Wedekind (jan at wedesoft.de)

Date:

Fri Jan 10 11:40:53 UTC 2006

void mimas::rgba_to_yv12	(	const char *	in,
		int	width,
		int	height,
		char *	out
	)

Colour conversion from RGBA to YV12.

Colourspace transformation from RGBA to YV12.

Parameters:

	in	Input RGBA data (8 bit)
	width	Width of input image
	height	Height of input image
	out	Pointer to store YV12 data in

Author:

Jan Wedekind (jan at wedesoft.de)

Date:

Fri Jan 10 11:40:53 UTC 2006

void mimas::uyvy_to_rgba	(	const char *	in,
		int	width,
		int	height,
		char *	out
	)

Colour conversion from UYVY to RGBA.

Colourspace transformation from UYVY to RGBA.

Parameters:

	in	Input UYVY data (8 bit)
	width	Width of input image
	height	Height of input image
	out	Pointer to store RGBA data in

Author:

Jan Wedekind (jan at wedesoft.de)

Date:

Fri Jan 10 11:40:53 UTC 2006

void mimas::yuv420p_to_grey	(	const char *	in,
		int	width,
		int	height,
		char *	out
	)

Colour conversion from YUV420p to grey.

Colourspace transformation from YUV420p to grey.

Parameters:

	in	Input YUV420p data (8 bit)
	width	Width of input image
	height	Height of input image
	out	Pointer to store grey data in

Author:

Jan Wedekind (jan at wedesoft.de)

Date:

Fri Jan 10 18:37:08 UTC 2006

void mimas::yuv420p_to_rgba	(	const char *	in,
		int	width,
		int	height,
		char *	out
	)

Colour conversion from YUV420p to RGBA.

Colourspace transformation from YUV420p to RGBA.

Parameters:

	in	Input YUV420p data (8 bit)
	width	Width of input image
	height	Height of input image
	out	Pointer to store RGBA data in

Author:

Bala Amavasai (bpa@amavasai.org)

Date:

Fri Jan 10 18:37:08 UTC 2006

void mimas::yuy2_to_grey	(	const char *	in,
		int	width,
		int	height,
		char *	out
	)

Colour conversion from YUY2 to grey.

Colourspace transformation from YUY2 to grey.

Parameters:

	in	Input YUY2 data (8 bit)
	width	Width of input image
	height	Height of input image
	out	Pointer to store grey data in

Author:

Jan Wedekind (jan at wedesoft.de)

Date:

Fri Jan 10 16:21:13 UTC 2006

void mimas::yuy2_to_rgba	(	const char *	in,
		int	width,
		int	height,
		char *	out
	)

Colour conversion from YUY2 to RGBA.

Colourspace transformation from YUY2 to RGBA.

Parameters:

	in	Input YUY2 data (8 bit)
	width	Width of input image
	height	Height of input image
	out	Pointer to store RGBA data in

Author:

Jan Wedekind (jan at wedesoft.de)

Date:

Fri Jan 10 11:40:53 UTC 2006

void mimas::yv12_to_grey	(	const char *	in,
		int	width,
		int	height,
		char *	out
	)

Colour conversion from YV12 to Grey.

Colourspace transformation from YV12 to Grey.

Parameters:

	in	Input YV12 data (8 bit)
	width	Width of input image
	height	Height of input image
	out	Pointer to store grey data in

Author:

Jan Wedekind (jan at wedesoft.de)

Date:

Fri Jan 10 11:40:53 UTC 2006

void mimas::yv12_to_rgba	(	const char *	in,
		int	width,
		int	height,
		char *	out
	)

Colour conversion from YV12 to RGBA.

Colourspace transformation from YV12 to RGBA.

Parameters:

	in	Input YV12 data (8 bit)
	width	Width of input image
	height	Height of input image
	out	Pointer to store RGBA data in

Author:

Jan Wedekind (jan at wedesoft.de)

Date:

Fri Jan 10 11:40:53 UTC 2006

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