Merge pull request #11716 from marcelofg55/coreaudio_driver

Merged iphone and osx audio drivers into drivers/coreaudio

13 files changed, 12 insertions, 658 deletions

diff --git a/platform/iphone/SCsub b/platform/iphone/SCsub
index 998d0a3f0d..61798c5f87 100644
--- a/platform/iphone/SCsub
+++ b/platform/iphone/SCsub
@@ -5,7 +5,6 @@ Import('env')
 iphone_lib = [
 
     'os_iphone.cpp',
-    'audio_driver_iphone.cpp',
     'sem_iphone.cpp',
     'gl_view.mm',
     'main.m',
diff --git a/platform/iphone/app_delegate.mm b/platform/iphone/app_delegate.mm
index c7b65b476b..da6ceacdac 100644
--- a/platform/iphone/app_delegate.mm
+++ b/platform/iphone/app_delegate.mm
@@ -29,8 +29,8 @@
 /*************************************************************************/
 #import "app_delegate.h"
 
-#include "audio_driver_iphone.h"
 #include "core/project_settings.h"
+#include "drivers/coreaudio/audio_driver_coreaudio.h"
 #import "gl_view.h"
 #include "main/main.h"
 #include "os_iphone.h"
@@ -736,8 +736,8 @@ static int frame_count = 0;
 	};
 
 	// Fixed audio can not resume if it is interrupted cause by an incoming phone call
-	if (AudioDriverIphone::get_singleton() != NULL)
-		AudioDriverIphone::get_singleton()->start();
+	if (AudioDriverCoreAudio::get_singleton() != NULL)
+		AudioDriverCoreAudio::get_singleton()->start();
 }
 
 - (BOOL)application:(UIApplication *)application handleOpenURL:(NSURL *)url {
diff --git a/platform/iphone/audio_driver_iphone.cpp b/platform/iphone/audio_driver_iphone.cpp
deleted file mode 100644
index dbc5bdb654..0000000000
--- a/platform/iphone/audio_driver_iphone.cpp
+++ /dev/null
@@ -1,187 +0,0 @@
-/*************************************************************************/
-/*  audio_driver_iphone.cpp                                              */
-/*************************************************************************/
-/*                       This file is part of:                           */
-/*                           GODOT ENGINE                                */
-/*                      https://godotengine.org                          */
-/*************************************************************************/
-/* Copyright (c) 2007-2017 Juan Linietsky, Ariel Manzur.                 */
-/* Copyright (c) 2014-2017 Godot Engine contributors (cf. AUTHORS.md)    */
-/*                                                                       */
-/* Permission is hereby granted, free of charge, to any person obtaining */
-/* a copy of this software and associated documentation files (the       */
-/* "Software"), to deal in the Software without restriction, including   */
-/* without limitation the rights to use, copy, modify, merge, publish,   */
-/* distribute, sublicense, and/or sell copies of the Software, and to    */
-/* permit persons to whom the Software is furnished to do so, subject to */
-/* the following conditions:                                             */
-/*                                                                       */
-/* The above copyright notice and this permission notice shall be        */
-/* included in all copies or substantial portions of the Software.       */
-/*                                                                       */
-/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
-/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
-/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
-/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
-/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
-/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
-/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
-/*************************************************************************/
-#include "audio_driver_iphone.h"
-
-Error AudioDriverIphone::init() {
-
-	active = false;
-	channels = 2;
-
-	AudioStreamBasicDescription strdesc;
-	strdesc.mFormatID = kAudioFormatLinearPCM;
-	strdesc.mFormatFlags = kLinearPCMFormatFlagIsSignedInteger | kLinearPCMFormatFlagIsPacked;
-	strdesc.mChannelsPerFrame = channels;
-	strdesc.mSampleRate = 44100;
-	strdesc.mFramesPerPacket = 1;
-	strdesc.mBitsPerChannel = 16;
-	strdesc.mBytesPerFrame =
-			strdesc.mBitsPerChannel * strdesc.mChannelsPerFrame / 8;
-	strdesc.mBytesPerPacket =
-			strdesc.mBytesPerFrame * strdesc.mFramesPerPacket;
-
-	AURenderCallbackStruct callback;
-	AudioComponentDescription desc;
-	const AudioUnitElement output_bus = 0;
-	const AudioUnitElement bus = output_bus;
-	const AudioUnitScope scope = kAudioUnitScope_Input;
-
-	zeromem(&desc, sizeof(desc));
-	desc.componentType = kAudioUnitType_Output;
-	desc.componentSubType = kAudioUnitSubType_RemoteIO; /* !!! FIXME: ? */
-	AudioComponent comp = AudioComponentFindNext(NULL, &desc);
-	desc.componentManufacturer = kAudioUnitManufacturer_Apple;
-
-	OSStatus result = AudioComponentInstanceNew(comp, &audio_unit);
-	ERR_FAIL_COND_V(result != noErr, FAILED);
-	ERR_FAIL_COND_V(comp == NULL, FAILED);
-
-	result = AudioUnitSetProperty(audio_unit,
-			kAudioUnitProperty_StreamFormat,
-			scope, bus, &strdesc, sizeof(strdesc));
-	ERR_FAIL_COND_V(result != noErr, FAILED);
-
-	zeromem(&callback, sizeof(AURenderCallbackStruct));
-	callback.inputProc = &AudioDriverIphone::output_callback;
-	callback.inputProcRefCon = this;
-	result = AudioUnitSetProperty(audio_unit,
-			kAudioUnitProperty_SetRenderCallback,
-			scope, bus, &callback, sizeof(callback));
-	ERR_FAIL_COND_V(result != noErr, FAILED);
-
-	result = AudioUnitInitialize(audio_unit);
-	ERR_FAIL_COND_V(result != noErr, FAILED);
-
-	result = AudioOutputUnitStart(audio_unit);
-	ERR_FAIL_COND_V(result != noErr, FAILED);
-
-	const int samples = 1024;
-	samples_in = memnew_arr(int32_t, samples); // whatever
-	buffer_frames = samples / channels;
-
-	return FAILED;
-};
-
-OSStatus AudioDriverIphone::output_callback(void *inRefCon,
-		AudioUnitRenderActionFlags *ioActionFlags,
-		const AudioTimeStamp *inTimeStamp,
-		UInt32 inBusNumber, UInt32 inNumberFrames,
-		AudioBufferList *ioData) {
-
-	AudioBuffer *abuf;
-	AudioDriverIphone *ad = (AudioDriverIphone *)inRefCon;
-
-	bool mix = true;
-
-	if (!ad->active)
-		mix = false;
-	else if (ad->mutex) {
-		mix = ad->mutex->try_lock() == OK;
-	};
-
-	if (!mix) {
-		for (unsigned int i = 0; i < ioData->mNumberBuffers; i++) {
-			abuf = &ioData->mBuffers[i];
-			zeromem(abuf->mData, abuf->mDataByteSize);
-		};
-		return 0;
-	};
-
-	int frames_left;
-
-	for (unsigned int i = 0; i < ioData->mNumberBuffers; i++) {
-
-		abuf = &ioData->mBuffers[i];
-		frames_left = inNumberFrames;
-		int16_t *out = (int16_t *)abuf->mData;
-
-		while (frames_left) {
-
-			int frames = MIN(frames_left, ad->buffer_frames);
-			//ad->lock();
-			ad->audio_server_process(frames, ad->samples_in);
-			//ad->unlock();
-
-			for (int i = 0; i < frames * ad->channels; i++) {
-
-				out[i] = ad->samples_in[i] >> 16;
-			}
-
-			frames_left -= frames;
-			out += frames * ad->channels;
-		};
-	};
-
-	if (ad->mutex)
-		ad->mutex->unlock();
-
-	return 0;
-};
-
-void AudioDriverIphone::start() {
-	active = true;
-	// Resume audio
-	//	iOS audio-thread stoped if it is interrupted cause by an incoming phone call
-	//	Use AudioOutputUnitStart to re-create audio-thread
-	OSStatus result = AudioOutputUnitStart(audio_unit);
-	ERR_FAIL_COND(result != noErr);
-};
-
-int AudioDriverIphone::get_mix_rate() const {
-	return 44100;
-};
-
-AudioDriver::SpeakerMode AudioDriverIphone::get_speaker_mode() const {
-	return SPEAKER_MODE_STEREO;
-};
-
-void AudioDriverIphone::lock() {
-
-	if (active && mutex)
-		mutex->lock();
-};
-
-void AudioDriverIphone::unlock() {
-	if (active && mutex)
-		mutex->unlock();
-};
-
-void AudioDriverIphone::finish() {
-
-	memdelete_arr(samples_in);
-};
-
-AudioDriverIphone::AudioDriverIphone() {
-
-	mutex = Mutex::create(); //NULL;
-};
-
-AudioDriverIphone::~AudioDriverIphone(){
-
-};
diff --git a/platform/iphone/audio_driver_iphone.h b/platform/iphone/audio_driver_iphone.h
deleted file mode 100644
index 930ed168f7..0000000000
--- a/platform/iphone/audio_driver_iphone.h
+++ /dev/null
@@ -1,66 +0,0 @@
-/*************************************************************************/
-/*  audio_driver_iphone.h                                                */
-/*************************************************************************/
-/*                       This file is part of:                           */
-/*                           GODOT ENGINE                                */
-/*                      https://godotengine.org                          */
-/*************************************************************************/
-/* Copyright (c) 2007-2017 Juan Linietsky, Ariel Manzur.                 */
-/* Copyright (c) 2014-2017 Godot Engine contributors (cf. AUTHORS.md)    */
-/*                                                                       */
-/* Permission is hereby granted, free of charge, to any person obtaining */
-/* a copy of this software and associated documentation files (the       */
-/* "Software"), to deal in the Software without restriction, including   */
-/* without limitation the rights to use, copy, modify, merge, publish,   */
-/* distribute, sublicense, and/or sell copies of the Software, and to    */
-/* permit persons to whom the Software is furnished to do so, subject to */
-/* the following conditions:                                             */
-/*                                                                       */
-/* The above copyright notice and this permission notice shall be        */
-/* included in all copies or substantial portions of the Software.       */
-/*                                                                       */
-/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
-/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
-/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
-/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
-/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
-/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
-/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
-/*************************************************************************/
-
-#include "servers/audio_server.h"
-
-#include <AudioUnit/AudioUnit.h>
-
-class AudioDriverIphone : public AudioDriver {
-
-	AudioComponentInstance audio_unit;
-	bool active;
-	Mutex *mutex;
-
-	int channels;
-	int32_t *samples_in;
-	int buffer_frames;
-
-	static OSStatus output_callback(void *inRefCon,
-			AudioUnitRenderActionFlags *ioActionFlags,
-			const AudioTimeStamp *inTimeStamp,
-			UInt32 inBusNumber, UInt32 inNumberFrames,
-			AudioBufferList *ioData);
-
-public:
-	const char *get_name() const {
-		return "IPhone";
-	};
-
-	virtual Error init();
-	virtual void start();
-	virtual int get_mix_rate() const;
-	virtual SpeakerMode get_speaker_mode() const;
-	virtual void lock();
-	virtual void unlock();
-	virtual void finish();
-
-	AudioDriverIphone();
-	~AudioDriverIphone();
-};
diff --git a/platform/iphone/detect.py b/platform/iphone/detect.py
index dd4db0b1cd..00d8a59f74 100644
--- a/platform/iphone/detect.py
+++ b/platform/iphone/detect.py
@@ -148,7 +148,7 @@ def configure(env):
     env['ENV']['CODESIGN_ALLOCATE'] = '/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/codesign_allocate'
 
     env.Append(CPPPATH=['#platform/iphone'])
-    env.Append(CPPFLAGS=['-DIPHONE_ENABLED', '-DUNIX_ENABLED', '-DGLES2_ENABLED', '-DMPC_FIXED_POINT'])
+    env.Append(CPPFLAGS=['-DIPHONE_ENABLED', '-DUNIX_ENABLED', '-DGLES2_ENABLED', '-DMPC_FIXED_POINT', '-DCOREAUDIO_ENABLED'])
 
     # TODO: Move that to opus module's config
     if 'module_opus_enabled' in env and env['module_opus_enabled']:
diff --git a/platform/iphone/os_iphone.cpp b/platform/iphone/os_iphone.cpp
index 0e3eeed114..086cbe5010 100644
--- a/platform/iphone/os_iphone.cpp
+++ b/platform/iphone/os_iphone.cpp
@@ -35,7 +35,6 @@
 #include "servers/visual/visual_server_raster.h"
 //#include "servers/visual/visual_server_wrap_mt.h"
 
-#include "audio_driver_iphone.h"
 #include "main/main.h"
 
 #include "core/io/file_access_pack.h"
@@ -124,9 +123,8 @@ void OSIPhone::initialize(const VideoMode &p_desired, int p_video_driver, int p_
 	// reset this to what it should be, it will have been set to 0 after visual_server->init() is called
 	RasterizerStorageGLES3::system_fbo = gl_view_base_fb;
 
-	audio_driver = memnew(AudioDriverIphone);
-	audio_driver->set_singleton();
-	audio_driver->init();
+	AudioDriverManager::add_driver(&audio_driver);
+	AudioDriverManager::initialize(p_audio_driver);
 
 	// init physics servers
 	physics_server = memnew(PhysicsServerSW);
diff --git a/platform/iphone/os_iphone.h b/platform/iphone/os_iphone.h
index 475dceebf2..3ebd5a74db 100644
--- a/platform/iphone/os_iphone.h
+++ b/platform/iphone/os_iphone.h
@@ -32,6 +32,7 @@
 #ifndef OS_IPHONE_H
 #define OS_IPHONE_H
 
+#include "drivers/coreaudio/audio_driver_coreaudio.h"
 #include "drivers/unix/os_unix.h"
 #include "os/input.h"
 
@@ -46,8 +47,6 @@
 #include "servers/visual/rasterizer.h"
 #include "servers/visual_server.h"
 
-class AudioDriverIphone;
-
 class OSIPhone : public OS_Unix {
 
 public:
@@ -70,7 +69,7 @@ private:
 	PhysicsServer *physics_server;
 	Physics2DServer *physics_2d_server;
 
-	AudioDriverIphone *audio_driver;
+	AudioDriverCoreAudio audio_driver;
 
 #ifdef GAME_CENTER_ENABLED
 	GameCenter *game_center;
diff --git a/platform/osx/SCsub b/platform/osx/SCsub
index 27bffbe80e..be3950bc6d 100644
--- a/platform/osx/SCsub
+++ b/platform/osx/SCsub
@@ -10,7 +10,6 @@ files = [
     'crash_handler_osx.mm',
     'os_osx.mm',
     'godot_main_osx.mm',
-    'audio_driver_osx.cpp',
     'sem_osx.cpp',
     'dir_access_osx.mm',
     'joypad_osx.cpp',
diff --git a/platform/osx/audio_driver_osx.cpp b/platform/osx/audio_driver_osx.cpp
deleted file mode 100644
index 3b3ba60507..0000000000
--- a/platform/osx/audio_driver_osx.cpp
+++ /dev/null
@@ -1,301 +0,0 @@
-/*************************************************************************/
-/*  audio_driver_osx.cpp                                                 */
-/*************************************************************************/
-/*                       This file is part of:                           */
-/*                           GODOT ENGINE                                */
-/*                      https://godotengine.org                          */
-/*************************************************************************/
-/* Copyright (c) 2007-2017 Juan Linietsky, Ariel Manzur.                 */
-/* Copyright (c) 2014-2017 Godot Engine contributors (cf. AUTHORS.md)    */
-/*                                                                       */
-/* Permission is hereby granted, free of charge, to any person obtaining */
-/* a copy of this software and associated documentation files (the       */
-/* "Software"), to deal in the Software without restriction, including   */
-/* without limitation the rights to use, copy, modify, merge, publish,   */
-/* distribute, sublicense, and/or sell copies of the Software, and to    */
-/* permit persons to whom the Software is furnished to do so, subject to */
-/* the following conditions:                                             */
-/*                                                                       */
-/* The above copyright notice and this permission notice shall be        */
-/* included in all copies or substantial portions of the Software.       */
-/*                                                                       */
-/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
-/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
-/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
-/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
-/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
-/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
-/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
-/*************************************************************************/
-#ifdef OSX_ENABLED
-
-#include "audio_driver_osx.h"
-#include "core/project_settings.h"
-#include "os/os.h"
-
-#define kOutputBus 0
-
-static OSStatus outputDeviceAddressCB(AudioObjectID inObjectID, UInt32 inNumberAddresses, const AudioObjectPropertyAddress *inAddresses, void *__nullable inClientData) {
-	AudioDriverOSX *driver = (AudioDriverOSX *)inClientData;
-
-	driver->reopen();
-
-	return noErr;
-}
-
-Error AudioDriverOSX::initDevice() {
-	AudioComponentDescription desc;
-	zeromem(&desc, sizeof(desc));
-	desc.componentType = kAudioUnitType_Output;
-	desc.componentSubType = kAudioUnitSubType_HALOutput;
-	desc.componentManufacturer = kAudioUnitManufacturer_Apple;
-
-	AudioComponent comp = AudioComponentFindNext(NULL, &desc);
-	ERR_FAIL_COND_V(comp == NULL, FAILED);
-
-	OSStatus result = AudioComponentInstanceNew(comp, &audio_unit);
-	ERR_FAIL_COND_V(result != noErr, FAILED);
-
-	AudioStreamBasicDescription strdesc;
-
-	zeromem(&strdesc, sizeof(strdesc));
-	UInt32 size = sizeof(strdesc);
-	result = AudioUnitGetProperty(audio_unit, kAudioUnitProperty_StreamFormat, kAudioUnitScope_Output, kOutputBus, &strdesc, &size);
-	ERR_FAIL_COND_V(result != noErr, FAILED);
-
-	switch (strdesc.mChannelsPerFrame) {
-		case 2: // Stereo
-		case 4: // Surround 3.1
-		case 6: // Surround 5.1
-		case 8: // Surround 7.1
-			channels = strdesc.mChannelsPerFrame;
-			break;
-
-		default:
-			// Unknown number of channels, default to stereo
-			channels = 2;
-			break;
-	}
-
-	mix_rate = GLOBAL_DEF("audio/mix_rate", DEFAULT_MIX_RATE);
-
-	zeromem(&strdesc, sizeof(strdesc));
-	strdesc.mFormatID = kAudioFormatLinearPCM;
-	strdesc.mFormatFlags = kLinearPCMFormatFlagIsSignedInteger | kLinearPCMFormatFlagIsPacked;
-	strdesc.mChannelsPerFrame = channels;
-	strdesc.mSampleRate = mix_rate;
-	strdesc.mFramesPerPacket = 1;
-	strdesc.mBitsPerChannel = 16;
-	strdesc.mBytesPerFrame = strdesc.mBitsPerChannel * strdesc.mChannelsPerFrame / 8;
-	strdesc.mBytesPerPacket = strdesc.mBytesPerFrame * strdesc.mFramesPerPacket;
-
-	result = AudioUnitSetProperty(audio_unit, kAudioUnitProperty_StreamFormat, kAudioUnitScope_Input, kOutputBus, &strdesc, sizeof(strdesc));
-	ERR_FAIL_COND_V(result != noErr, FAILED);
-
-	int latency = GLOBAL_DEF("audio/output_latency", DEFAULT_OUTPUT_LATENCY);
-	// Sample rate is independent of channels (ref: https://stackoverflow.com/questions/11048825/audio-sample-frequency-rely-on-channels)
-	buffer_frames = closest_power_of_2(latency * mix_rate / 1000);
-
-	result = AudioUnitSetProperty(audio_unit, kAudioDevicePropertyBufferFrameSize, kAudioUnitScope_Global, kOutputBus, &buffer_frames, sizeof(UInt32));
-	ERR_FAIL_COND_V(result != noErr, FAILED);
-
-	buffer_size = buffer_frames * channels;
-	samples_in.resize(buffer_size);
-
-	if (OS::get_singleton()->is_stdout_verbose()) {
-		print_line("CoreAudio: detected " + itos(channels) + " channels");
-		print_line("CoreAudio: audio buffer frames: " + itos(buffer_frames) + " calculated latency: " + itos(buffer_frames * 1000 / mix_rate) + "ms");
-	}
-
-	AURenderCallbackStruct callback;
-	zeromem(&callback, sizeof(AURenderCallbackStruct));
-	callback.inputProc = &AudioDriverOSX::output_callback;
-	callback.inputProcRefCon = this;
-	result = AudioUnitSetProperty(audio_unit, kAudioUnitProperty_SetRenderCallback, kAudioUnitScope_Input, kOutputBus, &callback, sizeof(callback));
-	ERR_FAIL_COND_V(result != noErr, FAILED);
-
-	result = AudioUnitInitialize(audio_unit);
-	ERR_FAIL_COND_V(result != noErr, FAILED);
-
-	return OK;
-}
-
-Error AudioDriverOSX::finishDevice() {
-	OSStatus result;
-
-	if (active) {
-		result = AudioOutputUnitStop(audio_unit);
-		ERR_FAIL_COND_V(result != noErr, FAILED);
-
-		active = false;
-	}
-
-	result = AudioUnitUninitialize(audio_unit);
-	ERR_FAIL_COND_V(result != noErr, FAILED);
-
-	return OK;
-}
-
-Error AudioDriverOSX::init() {
-	OSStatus result;
-
-	mutex = Mutex::create();
-	active = false;
-	channels = 2;
-
-	outputDeviceAddress.mSelector = kAudioHardwarePropertyDefaultOutputDevice;
-	outputDeviceAddress.mScope = kAudioObjectPropertyScopeGlobal;
-	outputDeviceAddress.mElement = kAudioObjectPropertyElementMaster;
-
-	result = AudioObjectAddPropertyListener(kAudioObjectSystemObject, &outputDeviceAddress, &outputDeviceAddressCB, this);
-	ERR_FAIL_COND_V(result != noErr, FAILED);
-
-	return initDevice();
-};
-
-Error AudioDriverOSX::reopen() {
-	bool restart = false;
-
-	lock();
-
-	if (active) {
-		restart = true;
-	}
-
-	Error err = finishDevice();
-	if (err != OK) {
-		ERR_PRINT("finishDevice failed");
-		unlock();
-		return err;
-	}
-
-	err = initDevice();
-	if (err != OK) {
-		ERR_PRINT("initDevice failed");
-		unlock();
-		return err;
-	}
-
-	if (restart) {
-		start();
-	}
-
-	unlock();
-
-	return OK;
-}
-
-OSStatus AudioDriverOSX::output_callback(void *inRefCon,
-		AudioUnitRenderActionFlags *ioActionFlags,
-		const AudioTimeStamp *inTimeStamp,
-		UInt32 inBusNumber, UInt32 inNumberFrames,
-		AudioBufferList *ioData) {
-
-	AudioDriverOSX *ad = (AudioDriverOSX *)inRefCon;
-
-	if (!ad->active || !ad->try_lock()) {
-		for (unsigned int i = 0; i < ioData->mNumberBuffers; i++) {
-			AudioBuffer *abuf = &ioData->mBuffers[i];
-			zeromem(abuf->mData, abuf->mDataByteSize);
-		};
-		return 0;
-	};
-
-	for (unsigned int i = 0; i < ioData->mNumberBuffers; i++) {
-
-		AudioBuffer *abuf = &ioData->mBuffers[i];
-		int frames_left = inNumberFrames;
-		int16_t *out = (int16_t *)abuf->mData;
-
-		while (frames_left) {
-
-			int frames = MIN(frames_left, ad->buffer_frames);
-			ad->audio_server_process(frames, ad->samples_in.ptr());
-
-			for (int j = 0; j < frames * ad->channels; j++) {
-
-				out[j] = ad->samples_in[j] >> 16;
-			}
-
-			frames_left -= frames;
-			out += frames * ad->channels;
-		};
-	};
-
-	ad->unlock();
-
-	return 0;
-};
-
-void AudioDriverOSX::start() {
-	if (!active) {
-		OSStatus result = AudioOutputUnitStart(audio_unit);
-		if (result != noErr) {
-			ERR_PRINT("AudioOutputUnitStart failed");
-		} else {
-			active = true;
-		}
-	}
-};
-
-int AudioDriverOSX::get_mix_rate() const {
-	return mix_rate;
-};
-
-AudioDriver::SpeakerMode AudioDriverOSX::get_speaker_mode() const {
-	return get_speaker_mode_by_total_channels(channels);
-};
-
-void AudioDriverOSX::lock() {
-	if (mutex)
-		mutex->lock();
-};
-
-void AudioDriverOSX::unlock() {
-	if (mutex)
-		mutex->unlock();
-};
-
-bool AudioDriverOSX::try_lock() {
-	if (mutex)
-		return mutex->try_lock() == OK;
-	return true;
-}
-
-void AudioDriverOSX::finish() {
-	finishDevice();
-
-	OSStatus result = AudioObjectRemovePropertyListener(kAudioObjectSystemObject, &outputDeviceAddress, &outputDeviceAddressCB, this);
-	if (result != noErr) {
-		ERR_PRINT("AudioObjectRemovePropertyListener failed");
-	}
-
-	AURenderCallbackStruct callback;
-	zeromem(&callback, sizeof(AURenderCallbackStruct));
-	result = AudioUnitSetProperty(audio_unit, kAudioUnitProperty_SetRenderCallback, kAudioUnitScope_Input, kOutputBus, &callback, sizeof(callback));
-	if (result != noErr) {
-		ERR_PRINT("AudioUnitSetProperty failed");
-	}
-
-	if (mutex) {
-		memdelete(mutex);
-		mutex = NULL;
-	}
-};
-
-AudioDriverOSX::AudioDriverOSX() {
-	active = false;
-	mutex = NULL;
-
-	mix_rate = 0;
-	channels = 2;
-
-	buffer_size = 0;
-	buffer_frames = 0;
-
-	samples_in.clear();
-};
-
-AudioDriverOSX::~AudioDriverOSX(){};
-
-#endif
diff --git a/platform/osx/audio_driver_osx.h b/platform/osx/audio_driver_osx.h
deleted file mode 100644
index a7e68c8141..0000000000
--- a/platform/osx/audio_driver_osx.h
+++ /dev/null
@@ -1,85 +0,0 @@
-/*************************************************************************/
-/*  audio_driver_osx.h                                                   */
-/*************************************************************************/
-/*                       This file is part of:                           */
-/*                           GODOT ENGINE                                */
-/*                      https://godotengine.org                          */
-/*************************************************************************/
-/* Copyright (c) 2007-2017 Juan Linietsky, Ariel Manzur.                 */
-/* Copyright (c) 2014-2017 Godot Engine contributors (cf. AUTHORS.md)    */
-/*                                                                       */
-/* Permission is hereby granted, free of charge, to any person obtaining */
-/* a copy of this software and associated documentation files (the       */
-/* "Software"), to deal in the Software without restriction, including   */
-/* without limitation the rights to use, copy, modify, merge, publish,   */
-/* distribute, sublicense, and/or sell copies of the Software, and to    */
-/* permit persons to whom the Software is furnished to do so, subject to */
-/* the following conditions:                                             */
-/*                                                                       */
-/* The above copyright notice and this permission notice shall be        */
-/* included in all copies or substantial portions of the Software.       */
-/*                                                                       */
-/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
-/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
-/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
-/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
-/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
-/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
-/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
-/*************************************************************************/
-#ifdef OSX_ENABLED
-
-#ifndef AUDIO_DRIVER_OSX_H
-#define AUDIO_DRIVER_OSX_H
-
-#include "servers/audio_server.h"
-
-#include <AudioUnit/AudioUnit.h>
-#include <CoreAudio/AudioHardware.h>
-
-class AudioDriverOSX : public AudioDriver {
-
-	AudioComponentInstance audio_unit;
-	AudioObjectPropertyAddress outputDeviceAddress;
-	bool active;
-	Mutex *mutex;
-
-	int mix_rate;
-	unsigned int channels;
-	unsigned int buffer_frames;
-	unsigned int buffer_size;
-
-	Vector<int32_t> samples_in;
-
-	static OSStatus output_callback(void *inRefCon,
-			AudioUnitRenderActionFlags *ioActionFlags,
-			const AudioTimeStamp *inTimeStamp,
-			UInt32 inBusNumber, UInt32 inNumberFrames,
-			AudioBufferList *ioData);
-
-	Error initDevice();
-	Error finishDevice();
-
-public:
-	const char *get_name() const {
-		return "AudioUnit";
-	};
-
-	virtual Error init();
-	virtual void start();
-	virtual int get_mix_rate() const;
-	virtual SpeakerMode get_speaker_mode() const;
-	virtual void lock();
-	virtual void unlock();
-	virtual void finish();
-
-	bool try_lock();
-	Error reopen();
-
-	AudioDriverOSX();
-	~AudioDriverOSX();
-};
-
-#endif
-
-#endif
diff --git a/platform/osx/detect.py b/platform/osx/detect.py
index 51da000712..f66c3f00da 100644
--- a/platform/osx/detect.py
+++ b/platform/osx/detect.py
@@ -103,7 +103,7 @@ def configure(env):
     ## Flags
 
     env.Append(CPPPATH=['#platform/osx'])
-    env.Append(CPPFLAGS=['-DOSX_ENABLED', '-DUNIX_ENABLED', '-DGLES2_ENABLED', '-DAPPLE_STYLE_KEYS'])
+    env.Append(CPPFLAGS=['-DOSX_ENABLED', '-DUNIX_ENABLED', '-DGLES2_ENABLED', '-DAPPLE_STYLE_KEYS', '-DCOREAUDIO_ENABLED'])
     env.Append(LINKFLAGS=['-framework', 'Cocoa', '-framework', 'Carbon', '-framework', 'OpenGL', '-framework', 'AGL', '-framework', 'AudioUnit', '-framework', 'CoreAudio', '-lz', '-framework', 'IOKit', '-framework', 'ForceFeedback'])
     env.Append(LIBS=['pthread'])
 
diff --git a/platform/osx/os_osx.h b/platform/osx/os_osx.h
index 6c81da04f5..1f76b7f990 100644
--- a/platform/osx/os_osx.h
+++ b/platform/osx/os_osx.h
@@ -31,13 +31,11 @@
 #define OS_OSX_H
 
 #include "crash_handler_osx.h"
-#include "drivers/alsa/audio_driver_alsa.h"
-#include "drivers/rtaudio/audio_driver_rtaudio.h"
+#include "drivers/coreaudio/audio_driver_coreaudio.h"
 #include "drivers/unix/os_unix.h"
 #include "joypad_osx.h"
 #include "main/input_default.h"
 #include "os/input.h"
-#include "platform/osx/audio_driver_osx.h"
 #include "power_osx.h"
 #include "servers/audio_server.h"
 #include "servers/physics_2d/physics_2d_server_sw.h"
@@ -69,7 +67,7 @@ public:
 
 	IP_Unix *ip_unix;
 
-	AudioDriverOSX audio_driver_osx;
+	AudioDriverCoreAudio audio_driver;
 
 	InputDefault *input;
 	JoypadOSX *joypad_osx;
diff --git a/platform/osx/os_osx.mm b/platform/osx/os_osx.mm
index 9a26adc155..16bef349dc 100644
--- a/platform/osx/os_osx.mm
+++ b/platform/osx/os_osx.mm
@@ -1071,7 +1071,7 @@ void OS_OSX::initialize(const VideoMode &p_desired, int p_video_driver, int p_au
 
 	bool use_gl2 = p_video_driver != 1;
 
-	AudioDriverManager::add_driver(&audio_driver_osx);
+	AudioDriverManager::add_driver(&audio_driver);
 
 	// only opengl support here...
 	RasterizerGLES3::register_config();