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Handle WildMidi's supported SysEx messages

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This commit is contained in:
Randy Heit 2015-12-29 17:49:43 -06:00
parent 6d2e93254f
commit 92e0bbeee9
1 changed files with 39 additions and 0 deletions
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39
src/wildmidi/wildmidi_lib.cpp
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@ -2918,6 +2918,45 @@ void WildMidi_Renderer::ShortEvent(int status, int parm1, int parm2)
void WildMidi_Renderer::LongEvent(const char *data, int len)
{
// Check for Roland SysEx
if (len >= 11 && // Must be at least 11 bytes
data[len-1] == 0xF7 && // SysEx end
data[0] == 0xF0 && // SysEx
data[1] == 0x41 && // Roland
data[2] == 0x10 && // Device ID, defaults to 0x10
data[3] == 0x42 && // Model ID, 0x42 indicates a GS synth
data[4] == 0x12 && // The other end is sending data to us
data[5] == 0x40) // We only care about addresses with this first byte
{
// Calculate checksum
int cksum = 0;
for (int i = 5; i < len - 2; ++i)
{
cksum += data[i];
}
cksum = 128 - (cksum & 0x7F);
if (data[len-2] == cksum)
{ // Check destination address
if (((data[6] & 0xF0) == 0x10) && data[7] == 0x15)
{ // Roland drum track setting
int sysex_ch = data[6] & 0x0F;
if (sysex_ch == 0)
{
sysex_ch = 9;
}
else if (sysex_ch <= 9)
{
sysex_ch -= 1;
}
_event_data ev = { sysex_ch, data[8] };
do_sysex_roland_drum_track((_mdi *)handle, &ev);
}
else if (data[6] == 0x00 && data[7] == 0x7F && data[8] == 0x00)
{ // Roland GS reset
do_sysex_roland_reset((_mdi *)handle, NULL);
}
}
}
}
void WildMidi_Renderer::ComputeOutput(float *fbuffer, int len)