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Reinit audio device when the system default device changes on OS X

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This commit is contained in:
Marcelo Fernandez 2017-07-16 22:29:47 -03:00
parent 4366b7c8b0
commit 764f607611
3 changed files with 101 additions and 22 deletions
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114
platform/osx/audio_driver_osx.cpp
View file

@ -31,11 +31,15 @@
#include "audio_driver_osx.h"
Error AudioDriverOSX::init() {
static OSStatus outputDeviceAddressCB(AudioObjectID inObjectID, UInt32 inNumberAddresses, const AudioObjectPropertyAddress *inAddresses, void *__nullable inClientData) {
AudioDriverOSX *driver = (AudioDriverOSX *)inClientData;
active = false;
channels = 2;
driver->reopen();
return noErr;
}
Error AudioDriverOSX::initDevice() {
AudioStreamBasicDescription strdesc;
strdesc.mFormatID = kAudioFormatLinearPCM;
strdesc.mFormatFlags = kLinearPCMFormatFlagIsSignedInteger | kLinearPCMFormatFlagIsPacked;
@ -43,12 +47,10 @@ Error AudioDriverOSX::init() {
strdesc.mSampleRate = 44100;
strdesc.mFramesPerPacket = 1;
strdesc.mBitsPerChannel = 16;
strdesc.mBytesPerFrame =
strdesc.mBitsPerChannel * strdesc.mChannelsPerFrame / 8;
strdesc.mBytesPerPacket =
strdesc.mBytesPerFrame * strdesc.mFramesPerPacket;
strdesc.mBytesPerFrame = strdesc.mBitsPerChannel * strdesc.mChannelsPerFrame / 8;
strdesc.mBytesPerPacket = strdesc.mBytesPerFrame * strdesc.mFramesPerPacket;
OSStatus result = noErr;
OSStatus result;
AURenderCallbackStruct callback;
AudioComponentDescription desc;
AudioComponent comp = NULL;
@ -66,32 +68,90 @@ Error AudioDriverOSX::init() {
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));
result = AudioUnitSetProperty(audio_unit, kAudioUnitProperty_StreamFormat, scope, bus, &strdesc, sizeof(strdesc));
ERR_FAIL_COND_V(result != noErr, FAILED);
zeromem(&callback, sizeof(AURenderCallbackStruct));
callback.inputProc = &AudioDriverOSX::output_callback;
callback.inputProcRefCon = this;
result = AudioUnitSetProperty(audio_unit,
kAudioUnitProperty_SetRenderCallback,
scope, bus, &callback, sizeof(callback));
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);
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;
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);
const int samples = 1024;
samples_in = memnew_arr(int32_t, samples); // whatever
buffer_frames = samples / channels;
return OK;
return initDevice();
};
Error AudioDriverOSX::reopen() {
Error err;
bool restart = false;
lock();
if (active) {
restart = true;
}
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,
@ -149,7 +209,14 @@ OSStatus AudioDriverOSX::output_callback(void *inRefCon,
};
void AudioDriverOSX::start() {
active = true;
if (!active) {
OSStatus result = AudioOutputUnitStart(audio_unit);
if (result != noErr) {
ERR_PRINT("AudioOutputUnitStart failed");
} else {
active = true;
}
}
};
int AudioDriverOSX::get_mix_rate() const {
@ -161,18 +228,23 @@ AudioDriver::SpeakerMode AudioDriverOSX::get_speaker_mode() const {
};
void AudioDriverOSX::lock() {
if (active && mutex)
if (mutex)
mutex->lock();
};
void AudioDriverOSX::unlock() {
if (active && mutex)
if (mutex)
mutex->unlock();
};
void AudioDriverOSX::finish() {
OSStatus result;
if (active)
AudioOutputUnitStop(audio_unit);
finishDevice();
result = AudioObjectRemovePropertyListener(kAudioObjectSystemObject, &outputDeviceAddress, &outputDeviceAddressCB, this);
if (result != noErr) {
ERR_PRINT("AudioObjectRemovePropertyListener failed");
}
memdelete_arr(samples_in);
};

7
platform/osx/audio_driver_osx.h
View file

@ -35,10 +35,12 @@
#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;
@ -52,6 +54,9 @@ class AudioDriverOSX : public AudioDriver {
UInt32 inBusNumber, UInt32 inNumberFrames,
AudioBufferList *ioData);
Error initDevice();
Error finishDevice();
public:
const char *get_name() const {
return "AudioUnit";
@ -65,6 +70,8 @@ public:
virtual void unlock();
virtual void finish();
Error reopen();
AudioDriverOSX();
~AudioDriverOSX();
};

2
platform/osx/detect.py
View file

@ -90,7 +90,7 @@ def configure(env):
env.Append(CPPPATH=['#platform/osx'])
env.Append(CPPFLAGS=['-DOSX_ENABLED', '-DUNIX_ENABLED', '-DGLES2_ENABLED', '-DAPPLE_STYLE_KEYS'])
env.Append(LINKFLAGS=['-framework', 'Cocoa', '-framework', 'Carbon', '-framework', 'OpenGL', '-framework', 'AGL', '-framework', 'AudioUnit', '-lz', '-framework', 'IOKit', '-framework', 'ForceFeedback'])
env.Append(LINKFLAGS=['-framework', 'Cocoa', '-framework', 'Carbon', '-framework', 'OpenGL', '-framework', 'AGL', '-framework', 'AudioUnit', '-framework', 'CoreAudio', '-lz', '-framework', 'IOKit', '-framework', 'ForceFeedback'])
env.Append(LIBS=['pthread'])
env.Append(CPPFLAGS=['-mmacosx-version-min=10.9'])