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CoreAudio: underflow test passes

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This commit is contained in:
Andrew Kelley 2015-08-07 13:11:34 -07:00
parent c263a29b52
commit cdb02e2b46
2 changed files with 34 additions and 1 deletions
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1
README.md
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@ -251,7 +251,6 @@ view `coverage/index.html` in a browser.
0. implement CoreAudio (OSX) backend, get examples working 0. implement CoreAudio (OSX) backend, get examples working
- microphone example - microphone example
- underflow example
0. ALSA backend for microphone example is broken 0. ALSA backend for microphone example is broken
0. Add some builtin channel layouts from 0. Add some builtin channel layouts from
https://developer.apple.com/library/mac/documentation/MusicAudio/Reference/CoreAudioDataTypesRef/#//apple_ref/doc/constant_group/Audio_Channel_Layout_Tags https://developer.apple.com/library/mac/documentation/MusicAudio/Reference/CoreAudioDataTypesRef/#//apple_ref/doc/constant_group/Audio_Channel_Layout_Tags

34
src/coreaudio.cpp
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@ -839,8 +839,29 @@ static void device_thread_run(void *arg) {
} }
} }
static OSStatus on_device_overload(AudioObjectID in_object_id, UInt32 in_number_addresses,
const AudioObjectPropertyAddress in_addresses[], void *in_client_data)
{
SoundIoOutStreamPrivate *os = (SoundIoOutStreamPrivate *)in_client_data;
SoundIoOutStream *outstream = &os->pub;
outstream->underflow_callback(outstream);
return noErr;
}
static void outstream_destroy_ca(struct SoundIoPrivate *si, struct SoundIoOutStreamPrivate *os) { static void outstream_destroy_ca(struct SoundIoPrivate *si, struct SoundIoOutStreamPrivate *os) {
SoundIoOutStreamCoreAudio *osca = &os->backend_data.coreaudio; SoundIoOutStreamCoreAudio *osca = &os->backend_data.coreaudio;
SoundIoOutStream *outstream = &os->pub;
SoundIoDevice *device = outstream->device;
SoundIoDevicePrivate *dev = (SoundIoDevicePrivate *)device;
SoundIoDeviceCoreAudio *dca = &dev->backend_data.coreaudio;
AudioObjectPropertyAddress prop_address = {
kAudioDeviceProcessorOverload,
kAudioObjectPropertyScopeGlobal,
kAudioObjectPropertyElementMaster
};
AudioObjectRemovePropertyListener(dca->device_id, &prop_address, on_device_overload, os);
if (osca->output_instance) { if (osca->output_instance) {
AudioOutputUnitStop(osca->output_instance); AudioOutputUnitStop(osca->output_instance);
AudioComponentInstanceDispose(osca->output_instance); AudioComponentInstanceDispose(osca->output_instance);
@ -928,6 +949,19 @@ static int outstream_open_ca(struct SoundIoPrivate *si, struct SoundIoOutStreamP
return SoundIoErrorOpeningDevice; return SoundIoErrorOpeningDevice;
} }
AudioObjectPropertyAddress prop_address = {
kAudioDeviceProcessorOverload,
kAudioObjectPropertyScopeGlobal,
kAudioObjectPropertyElementMaster
};
if ((os_err = AudioObjectAddPropertyListener(dca->device_id, &prop_address,
on_device_overload, os)))
{
outstream_destroy_ca(si, os);
return SoundIoErrorOpeningDevice;
}
return 0; return 0;
} }