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MIDI: Added sysEx function to Miles MT-32 driver

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The Miles MT-32 MIDI driver extends MidiDriver_BASE, but does not
override its sysEx method, which does nothing by default. This
resulted in a few initialization sysex messages for The 7th Guest
not being sent.

I've added an implementation for this method.

Adapted from 3657db3a7b7bf640edb768f6ffc37df9d5073d22
This commit is contained in:
Filippos Karapetis 2020-03-16 01:45:13 +02:00
parent 52d5d60907
commit 121fb4798b
1 changed files with 16 additions and 11 deletions
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27
audio/miles_mt32.cpp
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@ -80,6 +80,7 @@ public:
bool isOpen() const override { return _isOpen; }
void send(uint32 b) override;
void sysEx(const byte* msg, uint16 length) override;
MidiChannel *allocateChannel() override {
if (_driver)
@ -284,6 +285,20 @@ void MidiDriver_Miles_MT32::resetMT32() {
MT32SysEx(0x100001, milesMT32SysExInitReverb);
}
void MidiDriver_Miles_MT32::sysEx(const byte *msg, uint16 length) {
// Send SysEx
_driver->sysEx(msg, length);
// Wait the time it takes to send the SysEx data
uint32 delay = (length + 2) * 1000 / 3125;
// Plus an additional delay for the MT-32 rev00
if (_nativeMT32)
delay += 40;
g_system->delayMillis(delay);
}
void MidiDriver_Miles_MT32::MT32SysEx(const uint32 targetAddress, const byte *dataPtr) {
byte sysExMessage[270];
uint16 sysExPos = 0;
@ -324,17 +339,7 @@ void MidiDriver_Miles_MT32::MT32SysEx(const uint32 targetAddress, const byte *da
assert(sysExPos < sizeof(sysExMessage));
sysExMessage[sysExPos++] = sysExChecksum & 0x7f;
// Send SysEx
_driver->sysEx(sysExMessage, sysExPos);
// Wait the time it takes to send the SysEx data
uint32 delay = (sysExPos + 2) * 1000 / 3125;
// Plus an additional delay for the MT-32 rev00
if (_nativeMT32)
delay += 40;
g_system->delayMillis(delay);
sysEx(sysExMessage, sysExPos);
}
// MIDI messages can be found at http://www.midi.org/techspecs/midimessages.php