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