Let the back-end re-use the internal buffer for camera.
This function _must_ be called only on surface objects returned by
SDL_AcquireCameraFrame(). This function should be called as quickly as
possible after acquisition, as SDL keeps a small FIFO queue of surfaces for
video frames; if surfaces aren't released in a timely manner, SDL may drop
upcoming video frames from the camera.
If the app needs to keep the surface for a significant time, they should
make a copy of it and release the original.
The app should not use the surface again after calling this function;
assume the surface is freed and the pointer is invalid.
Release a frame of video acquired from a camera.
Let the back-end re-use the internal buffer for camera.
This function _must_ be called only on surface objects returned by SDL_AcquireCameraFrame(). This function should be called as quickly as possible after acquisition, as SDL keeps a small FIFO queue of surfaces for video frames; if surfaces aren't released in a timely manner, SDL may drop upcoming video frames from the camera.
If the app needs to keep the surface for a significant time, they should make a copy of it and release the original.
The app should not use the surface again after calling this function; assume the surface is freed and the pointer is invalid.