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# video decoder:
int init(sh_video) -> loads codec dll, check if available and it accepts header if any
int control(sh_video,cmd,param,...) -> various set/get/query functions
int decode(sh_video,framedrop) -> decode frame, callbacks to config/get_surface
int uninit(sh_video)
# callbacks for video decoder:
mpcodecs_config_vo(sh_video, w, h, preferred_outfmt){
// it will be called by codec (either init() or decode()) when it gets
// enough info to know image dimensions, colorspaces and buffering type
// this func should use control() to get/set parameters for a given outfmt
// (like supported buffering types, stride limitations, etc) or to
// query and select other colorspace.
}
// possible buffer setups:
- 1 static overwrite only (partial update type codecs: cvid, fli, vfw etc)
- 1+ independent temp writeonly (I-only mpegs, jpeg, mjpeg etc)
- 2+ static read/write (I+P mpegs)
- 2+ static read/write and 1+ temp writeonly (I+P+B mpegs)
image_t* mpcodecs_get_surface(sh_video, flags){
// flags:
// 0x1 - read (make it readable -> don't put to slow video ram)
}
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