video::Compressor Class Reference

Public Member Functions
	Compressor (int width, int height, int mfps, const std::string &filename)
	~Compressor ()
void	compresstexture (int gltexture)
void	preparetexture (int gltexture)
bool	get_output_info (unsigned int frameno, unsigned __int64 *fileoffset, FrameType::FT *frametype)

Detailed Description

Warning

The constructor of this class will query the current OpenGL rendering context and the current CUDA context and store both internally. Every time you call a method it will check whether these contexts are still current!

For the CUDA compression to work properly you need to make sure the CUDA context that runs the compression stream is on the same device as the OpenGL context that owns the textures! In debug mode, this class will check for this and barf if not!

When the destructor runs it will unregister textures passed in via preparetexture() from CUDA. This basically assumes that you are not using the textures in the current CUDA context outside of this library.

Constructor & Destructor Documentation

video::Compressor::Compressor	(	int	width,
		int	height,
		int	mfps,
		const std::string &	filename
	)

Parameters

mfps	Refresh rate in milli-Hz, e.g. for NTSC 29.97 Hz this would be 29970.
width	The input and output width of the video. Needs to be even! All formats in StreamFormat have even widths.
height	The input and output height of the video. If it's not even then this class automatically pads it. This is because NTSC has an odd height (487) and this class should be able to take it directly.

Exceptions

InteropFailedException	if there are problems with CUDA
CompressorFailedException	if the compressor engine specifically returns unexpected errors
std::logic_error	if there's no CUDA or OpenGL context, or both are not on the same device

video::Compressor::~Compressor

(

)

Member Function Documentation

void video::Compressor::compresstexture

(

int

gltexture

)

Exceptions

std::logic_error

if you did not call preparetexture() beforehand

bool video::Compressor::get_output_info	(	unsigned int	frameno,
		unsigned __int64 *	fileoffset,
		FrameType::FT *	frametype
	)

Returns some info you'll if you want to decompress the output.

Returns

true if info is available, false if frame is not finished yet

void video::Compressor::preparetexture

(

int

gltexture

)

Warning

The textures you pass in here will be unregistered from CUDA when the destructor runs!

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The documentation for this class was generated from the following files:

• compress.h
• compress.cxx