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AUDIO: Split event processing from MidiParser::onTimer

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This is to prepare for overriding more of this functionality in SCI.
This commit is contained in:
Willem Jan Palenstijn 2013-09-20 23:05:37 +02:00
parent 995d689ef3
commit 6c5a5cd8e9
2 changed files with 47 additions and 37 deletions
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79
audio/midiparser.cpp
View File

@ -204,44 +204,18 @@ void MidiParser::onTimer() {
return;
}
if (info.event == 0xF0) {
// SysEx event
// Check for trailing 0xF7 -- if present, remove it.
if (info.ext.data[info.length-1] == 0xF7)
_driver->sysEx(info.ext.data, (uint16)info.length-1);
if (info.command() == 0x8) {
activeNote(info.channel(), info.basic.param1, false);
} else if (info.command() == 0x9) {
if (info.length > 0)
hangingNote(info.channel(), info.basic.param1, info.length * _psecPerTick - (endTime - eventTime));
else
_driver->sysEx(info.ext.data, (uint16)info.length);
} else if (info.event == 0xFF) {
// META event
if (info.ext.type == 0x2F) {
// End of Track must be processed by us,
// as well as sending it to the output device.
if (_autoLoop) {
jumpToTick(0);
parseNextEvent(_nextEvent);
} else {
stopPlaying();
_driver->metaEvent(info.ext.type, info.ext.data, (uint16)info.length);
}
return;
} else if (info.ext.type == 0x51) {
if (info.length >= 3) {
setTempo(info.ext.data[0] << 16 | info.ext.data[1] << 8 | info.ext.data[2]);
}
}
_driver->metaEvent(info.ext.type, info.ext.data, (uint16)info.length);
} else {
if (info.command() == 0x8) {
activeNote(info.channel(), info.basic.param1, false);
} else if (info.command() == 0x9) {
if (info.length > 0)
hangingNote(info.channel(), info.basic.param1, info.length * _psecPerTick - (endTime - eventTime));
else
activeNote(info.channel(), info.basic.param1, true);
}
sendToDriver(info.event, info.basic.param1, info.basic.param2);
activeNote(info.channel(), info.basic.param1, true);
}
bool ret = processEvent(info);
if (!ret)
return;
if (!_abortParse) {
_position._lastEventTime = eventTime;
@ -255,6 +229,41 @@ void MidiParser::onTimer() {
}
}
bool MidiParser::processEvent(const EventInfo &info) {
if (info.event == 0xF0) {
// SysEx event
// Check for trailing 0xF7 -- if present, remove it.
if (info.ext.data[info.length-1] == 0xF7)
_driver->sysEx(info.ext.data, (uint16)info.length-1);
else
_driver->sysEx(info.ext.data, (uint16)info.length);
} else if (info.event == 0xFF) {
// META event
if (info.ext.type == 0x2F) {
// End of Track must be processed by us,
// as well as sending it to the output device.
if (_autoLoop) {
jumpToTick(0);
parseNextEvent(_nextEvent);
} else {
stopPlaying();
_driver->metaEvent(info.ext.type, info.ext.data, (uint16)info.length);
}
return false;
} else if (info.ext.type == 0x51) {
if (info.length >= 3) {
setTempo(info.ext.data[0] << 16 | info.ext.data[1] << 8 | info.ext.data[2]);
}
}
_driver->metaEvent(info.ext.type, info.ext.data, (uint16)info.length);
} else {
sendToDriver(info.event, info.basic.param1, info.basic.param2);
}
return true;
}
void MidiParser::allNotesOff() {
if (!_driver)
return;

5
audio/midiparser.h
View File

@ -105,8 +105,8 @@ struct EventInfo {
///< will occur, and the MidiParser will have to generate one itself.
///< For all other events, this value should always be zero.
byte channel() { return event & 0x0F; } ///< Separates the MIDI channel from the event.
byte command() { return event >> 4; } ///< Separates the command code from the event.
byte channel() const { return event & 0x0F; } ///< Separates the MIDI channel from the event.
byte command() const { return event >> 4; } ///< Separates the command code from the event.
};
/**
@ -293,6 +293,7 @@ protected:
virtual void resetTracking();
virtual void allNotesOff();
virtual void parseNextEvent(EventInfo &info) = 0;
virtual bool processEvent(const EventInfo &info);
void activeNote(byte channel, byte note, bool active);
void hangingNote(byte channel, byte note, uint32 ticksLeft, bool recycle = true);