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134 lines
3.1 KiB
C++
134 lines
3.1 KiB
C++
// Copyright 2009 Dolphin Emulator Project
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// Licensed under GPLv2+
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// Refer to the license.txt file included.
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#include <CoreServices/CoreServices.h>
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#include "AudioCommon/CoreAudioSoundStream.h"
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OSStatus CoreAudioSound::callback(void *inRefCon,
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AudioUnitRenderActionFlags *ioActionFlags,
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const AudioTimeStamp *inTimeStamp, UInt32 inBusNumber,
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UInt32 inNumberFrames, AudioBufferList *ioData)
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{
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for (UInt32 i = 0; i < ioData->mNumberBuffers; i++)
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((CoreAudioSound *)inRefCon)->m_mixer->
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Mix((short *)ioData->mBuffers[i].mData,
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ioData->mBuffers[i].mDataByteSize / 4);
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return noErr;
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}
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bool CoreAudioSound::Start()
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{
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OSStatus err;
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AURenderCallbackStruct callback_struct;
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AudioStreamBasicDescription format;
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AudioComponentDescription desc;
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AudioComponent component;
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desc.componentType = kAudioUnitType_Output;
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desc.componentSubType = kAudioUnitSubType_DefaultOutput;
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desc.componentFlags = 0;
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desc.componentFlagsMask = 0;
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desc.componentManufacturer = kAudioUnitManufacturer_Apple;
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component = AudioComponentFindNext(nullptr, &desc);
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if (component == nullptr)
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{
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ERROR_LOG(AUDIO, "error finding audio component");
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return false;
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}
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err = AudioComponentInstanceNew(component, &audioUnit);
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if (err != noErr)
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{
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ERROR_LOG(AUDIO, "error opening audio component");
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return false;
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}
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FillOutASBDForLPCM(format, m_mixer->GetSampleRate(),
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2, 16, 16, false, false, false);
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err = AudioUnitSetProperty(audioUnit,
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kAudioUnitProperty_StreamFormat,
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kAudioUnitScope_Input, 0, &format,
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sizeof(AudioStreamBasicDescription));
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if (err != noErr)
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{
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ERROR_LOG(AUDIO, "error setting audio format");
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return false;
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}
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callback_struct.inputProc = callback;
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callback_struct.inputProcRefCon = this;
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err = AudioUnitSetProperty(audioUnit,
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kAudioUnitProperty_SetRenderCallback,
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kAudioUnitScope_Input, 0, &callback_struct,
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sizeof callback_struct);
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if (err != noErr)
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{
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ERROR_LOG(AUDIO, "error setting audio callback");
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return false;
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}
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err = AudioUnitSetParameter(audioUnit,
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kHALOutputParam_Volume,
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kAudioUnitParameterFlag_Output, 0,
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m_volume / 100., 0);
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if (err != noErr)
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ERROR_LOG(AUDIO, "error setting volume");
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err = AudioUnitInitialize(audioUnit);
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if (err != noErr)
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{
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ERROR_LOG(AUDIO, "error initializing audiounit");
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return false;
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}
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err = AudioOutputUnitStart(audioUnit);
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if (err != noErr)
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{
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ERROR_LOG(AUDIO, "error starting audiounit");
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return false;
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}
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return true;
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}
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void CoreAudioSound::SetVolume(int volume)
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{
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OSStatus err;
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m_volume = volume;
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err = AudioUnitSetParameter(audioUnit,
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kHALOutputParam_Volume,
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kAudioUnitParameterFlag_Output, 0,
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volume / 100., 0);
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if (err != noErr)
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ERROR_LOG(AUDIO, "error setting volume");
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}
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void CoreAudioSound::SoundLoop()
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{
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}
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void CoreAudioSound::Stop()
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{
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OSStatus err;
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err = AudioOutputUnitStop(audioUnit);
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if (err != noErr)
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ERROR_LOG(AUDIO, "error stopping audiounit");
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err = AudioUnitUninitialize(audioUnit);
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if (err != noErr)
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ERROR_LOG(AUDIO, "error uninitializing audiounit");
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err = AudioComponentInstanceDispose(audioUnit);
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if (err != noErr)
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ERROR_LOG(AUDIO, "error closing audio component");
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}
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void CoreAudioSound::Update()
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{
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}
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