SDL: Use external midi sequencer software when arg with "-midicmd foo". #12
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Merge remote-tracking branch 'upstream/master' into sdl-midi-use-timidity
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Jun 21, 2020
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Configure for SDL/SDL2 with SDL_Mixer, loading and playing midi file(s) are very slowly and eats a lot of CPU time.
Because Mix_LoadMUS() tries to decode full track of a MIDI file to raw PCM data as default (maybe with some distros), this spend a lot of time.
But, at SDL_Mixer, available to use external command as a MIDI (or some formats) decoder, i.e. timidity.
So, I add a feature using external midi sequencer when running with ARG "-midicmd foo" or setting a environment variable; SIMUTRANS_MIDI_CMD.