Standard SDL 2.0 streaming objects

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Detailed Description

There functions permit to create standard streaming objects to stream video with a sdl renderer using textures. The renderer is not cleared by the object so do it one time before start streaming.

Don't forget to reset the object and clear the renderer when the renderer's viewport is modified !

Only for SDL 2.0 or greater !

Functions
WVStreamingObject *	WV_getStreamRendererObj (SDL_Renderer *targetRenderer, SDL_Rect *destRect, int updateFlag)
	Get a new renderer streaming object.
void	WV_resetStreamRendererOutput (WVStreamingObject *streamObj, SDL_Renderer *targetRenderer, SDL_Rect *destRect)
	Change/update the renderer of a renderer streaming object.
void	WV_freeStreamRendererObj (WVStreamingObject *streamObj)
	Free a renderer streaming object.

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Function Documentation

void WV_freeStreamRendererObj

(

WVStreamingObject *

streamObj

)

Free a renderer streaming object.

Parameters:

streamObj

The released streaming object

Free a streaming object created with WV_getStreamRendererObj. Be carefull that the streaming object pointer is not reset.

WVStreamingObject* WV_getStreamRendererObj	(	SDL_Renderer *	targetRenderer,
		SDL_Rect *	destRect,
		int	updateFlag
	)

Get a new renderer streaming object.

Parameters:

targetRenderer	The sdl renderer we use to stream video data
destRect	The destination rectangle. The entire rendering target if NULL;
updateFlag	Set it if you want that waave update the target surface with SDL_RenderPresent

Create a new streaming object for a sdl renderer. Be carefull to use it only for one video stream !

void WV_resetStreamRendererOutput	(	WVStreamingObject *	streamObj,
		SDL_Renderer *	targetRenderer,
		SDL_Rect *	destRect
	)

Change/update the renderer of a renderer streaming object.

Parameters:

streamObj	The modified/updated streaming object
targetRenderer	The new/updated renderer
destRect	The new/updated destination rectangle. May be NULL.

Call this function when the renderer's viewport is modified ! It's also possible to change the renderer of a streaming object without recreate it. This can be done at any time ! Even if the stream is playing.