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Re-enabling the separate MIDI thread, and comments about that

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Paul Licameli
2017-09-23 20:37:41 -04:00
parent d6657df045
commit ce649cf851
2 changed files with 20 additions and 6 deletions
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src/AudioIO.h
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@@ -93,11 +93,15 @@ DECLARE_EXPORTED_EVENT_TYPE(AUDACITY_DLL_API, EVT_AUDIOIO_PLAYBACK, -1);
DECLARE_EXPORTED_EVENT_TYPE(AUDACITY_DLL_API, EVT_AUDIOIO_CAPTURE, -1);
DECLARE_EXPORTED_EVENT_TYPE(AUDACITY_DLL_API, EVT_AUDIOIO_MONITOR, -1);
// PRL:
// If we always run a portaudio output stream (even just to produce silence)
// whenever we play Midi, then we can use just one thread for both, which
// simplifies synchronization problems and avoids the rush of notes at start of
// play. PRL.
#undef USE_MIDI_THREAD
// whenever we play Midi, then we might use just one thread for both.
// I thought this would improve MIDI synch problems on Linux/ALSA, but RBD
// convinced me it was neither a necessary nor sufficient fix. Perhaps too the
// MIDI thread might block in some error situations but we should then not
// also block the audio thread.
// So leave the separate thread ENABLED.
#define USE_MIDI_THREAD
struct ScrubbingOptions;