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CoreAudio midi support

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Imported-from: https://svn.code.sf.net/p/dosbox/code-0/dosbox/trunk@824
This commit is contained in:
Sjoerd van der Berg 2003-03-28 07:57:30 +00:00
parent 5f45f5ec90
commit 98b32db971
1 changed files with 92 additions and 0 deletions
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src/gui/midi_coreaudio.h Normal file
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/*
* Copyright (C) 2002-2003 The DOSBox Team
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Library General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#include <AudioUnit/AudioUnit.h>
class MidiHandler_coreaudio : public MidiHandler {
private:
AudioUnit m_musicDevice;
AudioUnit m_outputUnit;
public:
MidiHandler_coreaudio() : m_musicDevice(0), m_outputUnit(0) {}
char * GetName(void) { return "coreaudio"; }
bool Open(const char * conf) {
int err;
AudioUnitConnection auconnect;
ComponentDescription compdesc;
Component compid;
if (m_outputUnit)
return false;
// Open the Music Device
compdesc.componentType = kAudioUnitComponentType;
compdesc.componentSubType = kAudioUnitSubType_MusicDevice;
compdesc.componentManufacturer = kAudioUnitID_DLSSynth;
compdesc.componentFlags = 0;
compdesc.componentFlagsMask = 0;
compid = FindNextComponent(NULL, &compdesc);
m_musicDevice = (AudioUnit) OpenComponent(compid);
// open the output unit
m_outputUnit = (AudioUnit) OpenDefaultComponent(kAudioUnitComponentType, kAudioUnitSubType_Output);
// connect the units
auconnect.sourceAudioUnit = m_musicDevice;
auconnect.sourceOutputNumber = 0;
auconnect.destInputNumber = 0;
err =
AudioUnitSetProperty(m_outputUnit, kAudioUnitProperty_MakeConnection, kAudioUnitScope_Input, 0,
(void *)&auconnect, sizeof(AudioUnitConnection));
// initialize the units
AudioUnitInitialize(m_musicDevice);
AudioUnitInitialize(m_outputUnit);
// start the output
AudioOutputUnitStart(m_outputUnit);
return true;
}
void Close(void) {
if (m_outputUnit) {
AudioOutputUnitStop(m_outputUnit);
CloseComponent(m_outputUnit);
m_outputUnit = 0;
}
if (m_musicDevice) {
CloseComponent(m_musicDevice);
m_musicDevice = 0;
}
}
void PlayMsg(Bit32u msg) {
MusicDeviceMIDIEvent(m_musicDevice,
(msg & 0x000000FF),
(msg & 0x0000FF00) >> 8,
(msg & 0x00FF0000) >> 16,
0);
}
void PlaySysex(Bit8u * sysex, Bitu len) {
MusicDeviceSysEx(m_musicDevice, sysex, len);
}
};
MidiHandler_coreaudio Midi_coreaudio;