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- Changed EMIDI controller 110-113 handling to more accurately match the

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EMIDI specs: Track designations and exclusions should be ignored past
  the initial beat, and EMIDI program change and volume events should be
  ignored unless they were used in the initial beat.


SVN r944 (trunk)
This commit is contained in:
Randy Heit 2008-04-26 17:03:53 +00:00
parent b192762bc1
commit ab5c981b10
2 changed files with 46 additions and 25 deletions
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4
docs/rh-log.txt
View file

@ -1,4 +1,8 @@
April 26, 2008
- Changed EMIDI controller 110-113 handling to more accurately match the
EMIDI specs: Track designations and exclusions should be ignored past
the initial beat, and EMIDI program change and volume events should be
ignored unless they were used in the initial beat.
- Fixed: When FMOD::System::init() returns FMOD_ERR_OUTPUT_CREATEBUFFER, it
could also be because the user selected PCM-Float output, but the driver
doesn't support it (even if it claims to *cough*Audigy XP drivers*cough*).

67
src/sound/music_midi_midiout.cpp
View file

@ -60,6 +60,7 @@ struct MIDISong2::TrackInfo
size_t TrackP;
size_t MaxTrackP;
DWORD Delay;
DWORD PlayedTime;
bool Finished;
BYTE RunningStatus;
SBYTE LoopCount;
@ -274,6 +275,7 @@ void MIDISong2 :: DoRestart()
Tracks[i].LoopCount = -1;
Tracks[i].EProgramChange = false;
Tracks[i].EVolume = false;
Tracks[i].PlayedTime = 0;
}
ProcessInitialMetaEvents ();
for (i = 0; i < NumTracks; ++i)
@ -314,7 +316,7 @@ DWORD *MIDISong2::MakeEvents(DWORD *events, DWORD *max_event_p, DWORD max_time)
start_events = events;
while (TrackDue && events < max_event_p && tot_time <= max_time)
{
// It's possible that this tick may be nothing meta-events and
// It's possible that this tick may be nothing but meta-events and
// not generate any real events. Repeat this until we actually
// get some output so we don't send an empty buffer to the MIDI
// device.
@ -359,6 +361,7 @@ void MIDISong2::AdvanceTracks(DWORD time)
if (!Tracks[i].Finished)
{
Tracks[i].Delay -= time;
Tracks[i].PlayedTime += time;
}
}
}
@ -436,49 +439,63 @@ DWORD *MIDISong2::SendCommand (DWORD *events, TrackInfo *track, DWORD delay)
}
break;
case 39: // Fine channel volume
// Skip fine volume adjustment because I am lazy.
// (And it doesn't seem to be used much anyway.)
event = MIDI_META;
case 7+32: // Channel volume (LSB)
if (track->EVolume)
{
event = MIDI_META;
}
// It should be safe to pass this straight through to the
// MIDI device, since it's a very fine amount.
break;
case 110: // EMIDI Track Designation
case 110: // EMIDI Track Designation - InitBeat only
// Instruments 4, 5, 6, and 7 are all FM synth.
// The rest are all wavetable.
if (data2 == 127)
if (track->PlayedTime < (DWORD)Division)
{
track->Designation = ~0;
}
else
{
if (data2 <= 9)
if (data2 == 127)
{
track->Designation = ~0;
}
else if (data2 <= 9)
{
track->Designation |= 1 << data2;
}
track->Designated = true;
event = MIDI_META;
}
track->Designated = true;
event = MIDI_META;
break;
case 111: // EMIDI Track Exclusion
if (track->Designated)
case 111: // EMIDI Track Exclusion - InitBeat only
if (track->PlayedTime < (DWORD)Division)
{
track->Designation &= ~(1 << data2);
if (track->Designated && data2 <= 9)
{
track->Designation &= ~(1 << data2);
}
event = MIDI_META;
}
event = MIDI_META;
break;
case 112: // EMIDI Program Change
track->EProgramChange = true;
event = 0xC0 | (event & 0x0F);
data1 = data2;
data2 = 0;
// Ignored unless it also appears in the InitBeat
if (track->PlayedTime < (DWORD)Division || track->EProgramChange)
{
track->EProgramChange = true;
event = 0xC0 | (event & 0x0F);
data1 = data2;
data2 = 0;
}
break;
case 113: // EMIDI Volume
track->EVolume = true;
data1 = 7;
data2 = VolumeControllerChange(event & 15, data2);
// Ignored unless it also appears in the InitBeat
if (track->PlayedTime < (DWORD)Division || track->EVolume)
{
track->EVolume = true;
data1 = 7;
data2 = VolumeControllerChange(event & 15, data2);
}
break;
case 116: // EMIDI Loop Begin