Merge branch 'master' into buffer_storage

1 files changed, 135 insertions, 0 deletions

diff --git a/Source/Core/AudioCommon/CoreAudioSoundStream.cpp b/Source/Core/AudioCommon/CoreAudioSoundStream.cpp
new file mode 100644
index 0000000000..967eaa4b0a
--- /dev/null
+++ b/Source/Core/AudioCommon/CoreAudioSoundStream.cpp
@@ -0,0 +1,135 @@
+// Copyright 2013 Dolphin Emulator Project
+// Licensed under GPLv2
+// Refer to the license.txt file included.
+
+#include <CoreServices/CoreServices.h>
+
+#include "CoreAudioSoundStream.h"
+
+OSStatus CoreAudioSound::callback(void *inRefCon,
+	AudioUnitRenderActionFlags *ioActionFlags,
+	const AudioTimeStamp *inTimeStamp, UInt32 inBusNumber,
+	UInt32 inNumberFrames, AudioBufferList *ioData)
+{
+	for (UInt32 i = 0; i < ioData->mNumberBuffers; i++)
+		((CoreAudioSound *)inRefCon)->m_mixer->
+			Mix((short *)ioData->mBuffers[i].mData,
+				ioData->mBuffers[i].mDataByteSize / 4);
+
+	return noErr;
+}
+
+CoreAudioSound::CoreAudioSound(CMixer *mixer) : SoundStream(mixer)
+{
+}
+
+CoreAudioSound::~CoreAudioSound()
+{
+}
+
+bool CoreAudioSound::Start()
+{
+	OSStatus err;
+	AURenderCallbackStruct callback_struct;
+	AudioStreamBasicDescription format;
+	ComponentDescription desc;
+	Component component;
+
+	desc.componentType = kAudioUnitType_Output;
+	desc.componentSubType = kAudioUnitSubType_DefaultOutput;
+	desc.componentFlags = 0;
+	desc.componentFlagsMask = 0;
+	desc.componentManufacturer = kAudioUnitManufacturer_Apple;
+	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;
+	}
+
+	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 = AudioUnitSetParameter(audioUnit,
+					kHALOutputParam_Volume,
+					kAudioUnitParameterFlag_Output, 0,
+					m_volume / 100., 0);
+	if (err != noErr)
+		ERROR_LOG(AUDIO, "error setting volume");
+
+	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::SetVolume(int volume)
+{
+	OSStatus err;
+    m_volume = volume;
+
+	err = AudioUnitSetParameter(audioUnit,
+					kHALOutputParam_Volume,
+					kAudioUnitParameterFlag_Output, 0,
+					volume / 100., 0);
+	if (err != noErr)
+		ERROR_LOG(AUDIO, "error setting volume");
+}
+
+void CoreAudioSound::SoundLoop()
+{
+}
+
+void CoreAudioSound::Stop()
+{
+	OSStatus err;
+
+	err = AudioOutputUnitStop(audioUnit);
+	if (err != noErr)
+		ERROR_LOG(AUDIO, "error stopping audiounit");
+
+	err = AudioUnitUninitialize(audioUnit);
+	if (err != noErr)
+		ERROR_LOG(AUDIO, "error uninitializing audiounit");
+
+	err = CloseComponent(audioUnit);
+	if (err != noErr)
+		ERROR_LOG(AUDIO, "error closing audio component");
+}
+
+void CoreAudioSound::Update()
+{
+}