forked from dolphin-emu/dolphin
9d7b569ccb
by not linking in other Unix audio modules. Use kAudioUnitSubType_DefaultOutput instead of kAudioUnitSubType_HALOutput so that a runtime switch to another audio device is automatically handled. Use ERROR_LOG for audio errors. git-svn-id: https://dolphin-emu.googlecode.com/svn/trunk@5562 8ced0084-cf51-0410-be5f-012b33b47a6e
145 lines
3.5 KiB
C++
145 lines
3.5 KiB
C++
// Copyright (C) 2003 Dolphin Project.
|
|
|
|
// 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, version 2.0.
|
|
|
|
// 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 General Public License 2.0 for more details.
|
|
|
|
// A copy of the GPL 2.0 should have been included with the program.
|
|
// If not, see http://www.gnu.org/licenses/
|
|
|
|
// Official SVN repository and contact information can be found at
|
|
// http://code.google.com/p/dolphin-emu/
|
|
|
|
#include "CoreAudioSoundStream.h"
|
|
|
|
OSStatus callback(void *inRefCon, AudioUnitRenderActionFlags *ioActionFlags,
|
|
const AudioTimeStamp *inTimeStamp, UInt32 inBusNumber,
|
|
UInt32 inNumberFrames, AudioBufferList *ioData)
|
|
{
|
|
for (UInt32 i = 0; i < ioData->mNumberBuffers; i++)
|
|
{
|
|
((CoreAudioSound *)inRefCon)-> \
|
|
RenderSamples(ioData->mBuffers[i].mData,
|
|
ioData->mBuffers[i].mDataByteSize);
|
|
}
|
|
|
|
return noErr;
|
|
}
|
|
|
|
void CoreAudioSound::RenderSamples(void *target, UInt32 size)
|
|
{
|
|
m_mixer->Mix((short *)target, size / 4);
|
|
}
|
|
|
|
CoreAudioSound::CoreAudioSound(CMixer *mixer) : SoundStream(mixer)
|
|
{
|
|
}
|
|
|
|
CoreAudioSound::~CoreAudioSound()
|
|
{
|
|
}
|
|
|
|
bool CoreAudioSound::Start()
|
|
{
|
|
OSStatus err;
|
|
UInt32 enableIO;
|
|
AURenderCallbackStruct callback_struct;
|
|
AudioStreamBasicDescription format;
|
|
|
|
desc.componentType = kAudioUnitType_Output;
|
|
desc.componentSubType = kAudioUnitSubType_DefaultOutput;
|
|
desc.componentFlags = 0;
|
|
desc.componentFlagsMask = 0;
|
|
desc.componentManufacturer = kAudioUnitManufacturer_Apple;
|
|
|
|
Component component = FindNextComponent(NULL, &desc);
|
|
if (component == NULL) {
|
|
ERROR_LOG(AUDIO, "error finding audio component");
|
|
return false;
|
|
}
|
|
|
|
err = OpenAComponent(component, &audioUnit);
|
|
if (err != noErr) {
|
|
ERROR_LOG(AUDIO, "error opening audio component");
|
|
return false;
|
|
}
|
|
|
|
enableIO = 1;
|
|
AudioUnitSetProperty(audioUnit,
|
|
kAudioOutputUnitProperty_EnableIO,
|
|
kAudioUnitScope_Output, 0, &enableIO,
|
|
sizeof enableIO);
|
|
|
|
FillOutASBDForLPCM(format, m_mixer->GetSampleRate(),
|
|
2, 16, 16, false, false, false);
|
|
err = AudioUnitSetProperty(audioUnit,
|
|
kAudioUnitProperty_StreamFormat,
|
|
kAudioUnitScope_Input, 0, &format,
|
|
sizeof(AudioStreamBasicDescription));
|
|
if (err != noErr) {
|
|
ERROR_LOG(AUDIO, "error setting audio format");
|
|
return false;
|
|
}
|
|
|
|
callback_struct.inputProc = callback;
|
|
callback_struct.inputProcRefCon = this;
|
|
err = AudioUnitSetProperty(audioUnit,
|
|
kAudioUnitProperty_SetRenderCallback,
|
|
kAudioUnitScope_Input, 0, &callback_struct,
|
|
sizeof callback_struct);
|
|
if (err != noErr) {
|
|
ERROR_LOG(AUDIO, "error setting audio callback");
|
|
return false;
|
|
}
|
|
|
|
err = AudioUnitInitialize(audioUnit);
|
|
if (err != noErr) {
|
|
ERROR_LOG(AUDIO, "error initializing audiounit");
|
|
return false;
|
|
}
|
|
|
|
err = AudioOutputUnitStart(audioUnit);
|
|
if (err != noErr) {
|
|
ERROR_LOG(AUDIO, "error starting audiounit");
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
void CoreAudioSound::SoundLoop()
|
|
{
|
|
}
|
|
|
|
void CoreAudioSound::Stop()
|
|
{
|
|
OSStatus err;
|
|
|
|
err = AudioOutputUnitStop(audioUnit);
|
|
if (err != noErr) {
|
|
ERROR_LOG(AUDIO, "error stopping audiounit");
|
|
return;
|
|
}
|
|
|
|
err = AudioUnitUninitialize(audioUnit);
|
|
if (err != noErr) {
|
|
ERROR_LOG(AUDIO, "error uninitializing audiounit");
|
|
return;
|
|
}
|
|
|
|
err = CloseComponent(audioUnit);
|
|
if (err != noErr) {
|
|
ERROR_LOG(AUDIO, "error closing audio component");
|
|
return;
|
|
}
|
|
}
|
|
|
|
void CoreAudioSound::Update()
|
|
{
|
|
}
|