Load an animation from an SDL datasource
| src | an SDL_RWops that data will be read from. |
| freesrc | SDL_TRUE to close/free the SDL_RWops before returning, SDL_FALSE to leave it open. |
| type | a filename extension that represent this data ("GIF", etc). |
Returns a new IMG_Animation, or NULL on error.
Even though this function accepts a file type, SDL_image may still try other decoders that are capable of detecting file type from the contents of the image data, but may rely on the caller-provided type string for formats that it cannot autodetect. If type is NULL, SDL_image will rely solely on its ability to guess the format.
If freesrc is SDL_TRUE, the RWops will be closed before returning, whether this function succeeds or not. SDL_image reads everything it needs from the RWops during this call in any case.
When done with the returned animation, the app should dispose of it with a call to IMG_FreeAnimation().
This function is available since SDL_image 3.0.0.