1220 lines
36 KiB
C++
1220 lines
36 KiB
C++
/*
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* Copyright (C) 2015 Robin Gareus <robin@gareus.org>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include <glibmm.h>
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#include "coreaudio_pcmio.h"
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using namespace ARDOUR;
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/* abstraction for deprecated CoreAudio */
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static OSStatus GetPropertyWrapper (
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AudioDeviceID id, UInt32 elem, bool input, AudioDevicePropertyID prop, UInt32* size, void * data)
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{
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#ifdef COREAUDIO_108
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AudioObjectPropertyAddress property_address;
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property_address.mSelector = prop;
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switch (prop) {
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case kAudioDevicePropertyBufferFrameSize:
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case kAudioDevicePropertyBufferFrameSizeRange:
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property_address.mScope = kAudioObjectPropertyScopeGlobal;
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break;
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default:
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property_address.mScope = input ? kAudioDevicePropertyScopeInput: kAudioDevicePropertyScopeOutput;
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break;
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}
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property_address.mElement = kAudioObjectPropertyElementMaster;
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return AudioObjectGetPropertyData(id, &property_address, elem, NULL, size, data);
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#else
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return AudioDeviceGetProperty(id, elem, input, prop, size, data);
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#endif
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}
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static OSStatus SetPropertyWrapper (
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AudioDeviceID id, const AudioTimeStamp* when, UInt32 chn, bool input, AudioDevicePropertyID prop, UInt32 size, void * data)
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{
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#ifdef COREAUDIO_108
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AudioObjectPropertyAddress property_address;
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property_address.mSelector = prop;
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property_address.mScope = input ? kAudioDevicePropertyScopeInput: kAudioDevicePropertyScopeOutput;
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property_address.mElement = kAudioObjectPropertyElementMaster;
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return AudioObjectSetPropertyData (id, &property_address, 0, NULL, size, data);
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#else
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return AudioDeviceSetProperty (id, when, chn, input, prop, size, data);
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#endif
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}
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static OSStatus GetHardwarePropertyInfoWrapper (AudioDevicePropertyID prop, UInt32* size)
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{
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#ifdef COREAUDIO_108
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AudioObjectPropertyAddress property_address;
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property_address.mSelector = prop;
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property_address.mScope = kAudioObjectPropertyScopeGlobal;
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property_address.mElement = kAudioObjectPropertyElementMaster;
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return AudioObjectGetPropertyDataSize(kAudioObjectSystemObject, &property_address, 0, NULL, size);
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#else
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Boolean outWritable;
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return AudioHardwareGetPropertyInfo(prop, size, &outWritable);
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#endif
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}
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static OSStatus GetHardwarePropertyWrapper (AudioDevicePropertyID prop, UInt32* size, void *d)
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{
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#ifdef COREAUDIO_108
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AudioObjectPropertyAddress property_address;
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property_address.mSelector = prop;
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property_address.mScope = kAudioObjectPropertyScopeGlobal;
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property_address.mElement = kAudioObjectPropertyElementMaster;
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return AudioObjectGetPropertyData(kAudioObjectSystemObject, &property_address, 0, NULL, size, d);
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#else
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return AudioHardwareGetProperty (kAudioHardwarePropertyDevices, size, d);
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#endif
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}
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static OSStatus GetPropertyInfoWrapper (AudioDeviceID id, UInt32 elem, bool input, AudioDevicePropertyID prop, UInt32* size)
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{
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#ifdef COREAUDIO_108
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AudioObjectPropertyAddress property_address;
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property_address.mSelector = prop;
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property_address.mScope = input ? kAudioDevicePropertyScopeInput: kAudioDevicePropertyScopeOutput;
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property_address.mElement = elem;
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return AudioObjectGetPropertyDataSize(id, &property_address, 0, NULL, size);
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#else
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Boolean outWritable;
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return AudioDeviceGetPropertyInfo(id, elem, input, prop, size, &outWritable);
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#endif
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}
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static OSStatus GetDeviceNameFromID(AudioDeviceID id, char* name)
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{
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UInt32 size = 256;
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return GetPropertyWrapper (id, 0, 0, kAudioDevicePropertyDeviceName, &size, name);
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}
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static CFStringRef GetDeviceName(AudioDeviceID id)
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{
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UInt32 size = sizeof(CFStringRef);
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CFStringRef UIname;
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OSStatus err = GetPropertyWrapper (id, 0, 0, kAudioDevicePropertyDeviceUID, &size, &UIname);
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return (err == noErr) ? UIname : NULL;
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}
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///////////////////////////////////////////////////////////////////////////////
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#include "coreaudio_pcmio_aggregate.cc"
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/* callbacks */
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#ifdef COREAUDIO_108
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static OSStatus property_callback_ptr (AudioObjectID inObjectID, UInt32 inNumberAddresses, const AudioObjectPropertyAddress inAddresses[], void* arg) {
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CoreAudioPCM * self = static_cast<CoreAudioPCM*>(arg);
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for (UInt32 i = 0; i < inNumberAddresses; ++i) {
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switch (inAddresses[i].mSelector) {
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case kAudioHardwarePropertyDevices:
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self->hw_changed_callback();
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break;
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case kAudioDeviceProcessorOverload:
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self->xrun_callback();
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break;
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case kAudioDevicePropertyBufferFrameSize:
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self->buffer_size_callback();
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break;
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case kAudioDevicePropertyNominalSampleRate:
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self->sample_rate_callback();
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break;
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default:
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break;
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}
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}
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return noErr;
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}
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#else
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static OSStatus hw_changed_callback_ptr (AudioHardwarePropertyID inPropertyID, void* arg) {
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if (inPropertyID == kAudioHardwarePropertyDevices) {
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CoreAudioPCM * self = static_cast<CoreAudioPCM*>(arg);
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self->hw_changed_callback();
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}
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return noErr;
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}
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static OSStatus property_callback_ptr (
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AudioDeviceID inDevice,
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UInt32 inChannel,
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Boolean isInput,
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AudioDevicePropertyID inPropertyID,
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void* inClientData)
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{
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CoreAudioPCM * d = static_cast<CoreAudioPCM*> (inClientData);
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switch (inPropertyID) {
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case kAudioDeviceProcessorOverload:
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d->xrun_callback();
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break;
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case kAudioDevicePropertyBufferFrameSize:
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d->buffer_size_callback();
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break;
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case kAudioDevicePropertyNominalSampleRate:
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d->sample_rate_callback();
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break;
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}
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return noErr;
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}
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#endif
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static OSStatus render_callback_ptr (
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void* inRefCon,
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AudioUnitRenderActionFlags* ioActionFlags,
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const AudioTimeStamp* inTimeStamp,
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UInt32 inBusNumber,
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UInt32 inNumberFrames,
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AudioBufferList* ioData)
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{
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CoreAudioPCM * d = static_cast<CoreAudioPCM*> (inRefCon);
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return d->render_callback(ioActionFlags, inTimeStamp, inBusNumber, inNumberFrames, ioData);
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}
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static OSStatus add_listener (AudioDeviceID id, AudioDevicePropertyID selector, void *arg) {
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#ifdef COREAUDIO_108
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AudioObjectPropertyAddress property_address;
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property_address.mSelector = selector;
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property_address.mScope = kAudioObjectPropertyScopeGlobal;
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property_address.mElement = 0;
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return AudioObjectAddPropertyListener(id, &property_address, property_callback_ptr, arg);
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#else
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return AudioDeviceAddPropertyListener(id, 0, true, selector, property_callback_ptr, arg);
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#endif
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}
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///////////////////////////////////////////////////////////////////////////////
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CoreAudioPCM::CoreAudioPCM ()
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: _auhal (0)
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, _device_ids (0)
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, _input_audio_buffer_list (0)
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, _active_device_id (0)
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, _aggregate_device_id (0)
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, _aggregate_plugin_id (0)
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, _state (-1)
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, _capture_channels (0)
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, _playback_channels (0)
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, _in_process (false)
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, _n_devices (0)
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, _process_callback (0)
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, _error_callback (0)
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, _hw_changed_callback (0)
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, _xrun_callback (0)
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, _buffer_size_callback (0)
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, _sample_rate_callback (0)
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, _device_ins (0)
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, _device_outs (0)
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{
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pthread_mutex_init (&_discovery_lock, 0);
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#ifdef COREAUDIO_108
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CFRunLoopRef theRunLoop = NULL;
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AudioObjectPropertyAddress property = { kAudioHardwarePropertyRunLoop, kAudioObjectPropertyScopeGlobal, kAudioHardwarePropertyDevices };
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AudioObjectSetPropertyData (kAudioObjectSystemObject, &property, 0, NULL, sizeof(CFRunLoopRef), &theRunLoop);
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property.mSelector = kAudioHardwarePropertyDevices;
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property.mScope = kAudioObjectPropertyScopeGlobal;
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property.mElement = 0;
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AudioObjectAddPropertyListener(kAudioObjectSystemObject, &property, property_callback_ptr, this);
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#else
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AudioHardwareAddPropertyListener (kAudioHardwarePropertyDevices, hw_changed_callback_ptr, this);
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#endif
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}
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CoreAudioPCM::~CoreAudioPCM ()
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{
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if (_state == 0) {
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pcm_stop();
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}
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delete _device_ids;
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free(_device_ins);
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free(_device_outs);
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#ifdef COREAUDIO_108
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AudioObjectPropertyAddress prop;
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prop.mSelector = kAudioHardwarePropertyDevices;
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prop.mScope = kAudioObjectPropertyScopeGlobal;
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prop.mElement = 0;
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AudioObjectRemovePropertyListener(kAudioObjectSystemObject, &prop, &property_callback_ptr, this);
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#else
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AudioHardwareRemovePropertyListener(kAudioHardwarePropertyDevices, hw_changed_callback_ptr);
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#endif
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free(_input_audio_buffer_list);
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pthread_mutex_destroy (&_discovery_lock);
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}
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void
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CoreAudioPCM::hw_changed_callback() {
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#ifndef NDEBUG
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printf("CoreAudio HW change..\n");
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#endif
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discover();
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if (_hw_changed_callback) {
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_hw_changed_callback(_hw_changed_arg);
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}
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}
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int
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CoreAudioPCM::available_sample_rates(uint32_t device_id, std::vector<float>& sampleRates)
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{
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OSStatus err;
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UInt32 size = 0;
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sampleRates.clear();
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if (device_id >= _n_devices) {
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return -1;
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}
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err = GetPropertyInfoWrapper (_device_ids[device_id], 0, false, kAudioDevicePropertyAvailableNominalSampleRates, &size);
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if (err != kAudioHardwareNoError) {
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return -1;
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}
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uint32_t numRates = size / sizeof(AudioValueRange);
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AudioValueRange* supportedRates = new AudioValueRange[numRates];
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err = GetPropertyWrapper (_device_ids[device_id], 0, false, kAudioDevicePropertyAvailableNominalSampleRates, &size, supportedRates);
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if (err != kAudioHardwareNoError) {
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delete [] supportedRates;
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return -1;
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}
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static const float ardourRates[] = { 8000.0, 22050.0, 24000.0, 44100.0, 48000.0, 88200.0, 96000.0, 176400.0, 192000.0};
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for(uint32_t i = 0; i < sizeof(ardourRates)/sizeof(float); ++i) {
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for(uint32_t j = 0; j < numRates; ++j) {
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if ((supportedRates[j].mMinimum <= ardourRates[i]) &&
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(supportedRates[j].mMaximum >= ardourRates[i])) {
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sampleRates.push_back (ardourRates[i]);
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break;
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}
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}
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}
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delete [] supportedRates;
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return 0;
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}
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int
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CoreAudioPCM::available_buffer_sizes(uint32_t device_id, std::vector<uint32_t>& bufferSizes)
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{
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OSStatus err;
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UInt32 size = 0;
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bufferSizes.clear();
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if (device_id >= _n_devices) {
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return -1;
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}
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AudioValueRange supportedRange;
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size = sizeof (AudioValueRange);
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err = GetPropertyWrapper (_device_ids[device_id], 0, 0, kAudioDevicePropertyBufferFrameSizeRange, &size, &supportedRange);
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if (err != noErr) {
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return -1;
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}
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static const uint32_t ardourSizes[] = { 16, 32, 64, 128, 256, 512, 1024, 2048, 4096 };
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for(uint32_t i = 0; i < sizeof(ardourSizes)/sizeof(uint32_t); ++i) {
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if ((supportedRange.mMinimum <= ardourSizes[i]) &&
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(supportedRange.mMaximum >= ardourSizes[i])) {
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bufferSizes.push_back (ardourSizes[i]);
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}
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}
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if (bufferSizes.empty()) {
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bufferSizes.push_back ((uint32_t)supportedRange.mMinimum);
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bufferSizes.push_back ((uint32_t)supportedRange.mMaximum);
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}
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return 0;
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}
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uint32_t
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CoreAudioPCM::available_channels(uint32_t device_id, bool input)
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{
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OSStatus err;
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UInt32 size = 0;
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AudioBufferList *bufferList = NULL;
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uint32_t channel_count = 0;
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if (device_id >= _n_devices) {
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return 0;
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}
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/* query number of inputs */
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err = GetPropertyInfoWrapper (_device_ids[device_id], 0, input, kAudioDevicePropertyStreamConfiguration, &size);
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if (kAudioHardwareNoError != err) {
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fprintf(stderr, "CoreaAudioPCM: kAudioDevicePropertyStreamConfiguration failed\n");
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return 0;
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}
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bufferList = (AudioBufferList *)(malloc(size));
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assert(bufferList);
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if (!bufferList) { fprintf(stderr, "OUT OF MEMORY\n"); return 0; }
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bufferList->mNumberBuffers = 0;
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err = GetPropertyWrapper (_device_ids[device_id], 0, input, kAudioDevicePropertyStreamConfiguration, &size, bufferList);
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if(kAudioHardwareNoError != err) {
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fprintf(stderr, "CoreaAudioPCM: kAudioDevicePropertyStreamConfiguration failed\n");
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free(bufferList);
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return 0;
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}
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for(UInt32 j = 0; j < bufferList->mNumberBuffers; ++j) {
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channel_count += bufferList->mBuffers[j].mNumberChannels;
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}
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free(bufferList);
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return channel_count;
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}
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void
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CoreAudioPCM::get_stream_latencies(uint32_t device_id, bool input, std::vector<uint32_t>& latencies)
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{
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OSStatus err;
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UInt32 size = 0;
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if (device_id >= _n_devices) {
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return;
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}
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err = GetPropertyInfoWrapper (_device_ids[device_id], 0, input, kAudioDevicePropertyStreams, &size);
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if (err != noErr) { return; }
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uint32_t stream_count = size / sizeof(UInt32);
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AudioStreamID streamIDs[stream_count];
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err = GetPropertyWrapper (_device_ids[device_id], 0, input, kAudioDevicePropertyStreams, &size, &streamIDs);
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if (err != noErr) {
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fprintf(stderr, "GetStreamLatencies kAudioDevicePropertyStreams\n");
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return;
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}
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for (uint32_t i = 0; i < stream_count; i++) {
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UInt32 stream_latency;
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size = sizeof(UInt32);
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#ifdef COREAUDIO_108
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AudioObjectPropertyAddress property_address;
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property_address.mSelector = kAudioDevicePropertyStreams;
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property_address.mScope = input ? kAudioDevicePropertyScopeInput: kAudioDevicePropertyScopeOutput;
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property_address.mElement = i; // ??
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err = AudioObjectGetPropertyData(_device_ids[device_id], &property_address, 0, NULL, &size, &stream_latency);
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#else
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err = AudioStreamGetProperty(streamIDs[i], input, kAudioStreamPropertyLatency, &size, &stream_latency);
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#endif
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if (err != noErr) {
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fprintf(stderr, "GetStreamLatencies kAudioStreamPropertyLatency\n");
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return;
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}
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#ifndef NDEBUG
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printf(" ^ Stream %u latency: %u\n", (unsigned int)i, (unsigned int)stream_latency);
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#endif
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latencies.push_back(stream_latency);
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}
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}
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uint32_t
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CoreAudioPCM::get_latency(uint32_t device_id, bool input)
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{
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OSStatus err;
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uint32_t latency = 0;
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UInt32 size = sizeof(UInt32);
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UInt32 lat0 = 0;
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UInt32 latS = 0;
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if (device_id >= _n_devices) {
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return 0;
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}
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err = GetPropertyWrapper (_device_ids[device_id], 0, input, kAudioDevicePropertyLatency, &size, &lat0);
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if (err != kAudioHardwareNoError) {
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fprintf(stderr, "GetLatency kAudioDevicePropertyLatency\n");
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}
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err = GetPropertyWrapper (_device_ids[device_id], 0, input, kAudioDevicePropertySafetyOffset, &size, &latS);
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if (err != kAudioHardwareNoError) {
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fprintf(stderr, "GetLatency kAudioDevicePropertySafetyOffset\n");
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}
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#ifndef NDEBUG
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printf("%s Latency systemic+safetyoffset = %u + %u\n",
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input ? "Input" : "Output", (unsigned int)lat0, (unsigned int)latS);
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#endif
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latency = lat0 + latS;
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uint32_t max_stream_latency = 0;
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std::vector<uint32_t> stream_latencies;
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get_stream_latencies(device_id, input, stream_latencies);
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for (size_t i = 0; i < stream_latencies.size(); ++i) {
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max_stream_latency = std::max(max_stream_latency, stream_latencies[i]);
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}
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latency += max_stream_latency;
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return latency;
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}
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uint32_t
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CoreAudioPCM::get_latency(bool input)
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{
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if (_active_device_id == 0) {
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return 0;
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}
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return get_latency (_active_device_id, input);
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}
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uint32_t
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CoreAudioPCM::current_buffer_size_id(AudioDeviceID id) {
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UInt32 buffer_size;
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UInt32 size = sizeof(UInt32);
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OSStatus err;
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err = GetPropertyWrapper (id, 0, 0, kAudioDevicePropertyBufferFrameSize, &size, &buffer_size);
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if (err != noErr) {
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return _samples_per_period;
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}
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return buffer_size;
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}
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|
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float
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CoreAudioPCM::current_sample_rate_id(AudioDeviceID id, bool input) {
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OSStatus err;
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UInt32 size = 0;
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Float64 rate;
|
|
size = sizeof (rate);
|
|
|
|
err = GetPropertyWrapper(id, 0, input, kAudioDevicePropertyNominalSampleRate, &size, &rate);
|
|
if (err == noErr) {
|
|
return rate;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
float
|
|
CoreAudioPCM::current_sample_rate(uint32_t device_id, bool input) {
|
|
if (device_id >= _n_devices) {
|
|
return -1;
|
|
}
|
|
return current_sample_rate_id(_device_ids[device_id], input);
|
|
}
|
|
|
|
float
|
|
CoreAudioPCM::sample_rate() {
|
|
if (_active_device_id == 0) {
|
|
return 0;
|
|
}
|
|
return current_sample_rate_id(_active_device_id, _playback_channels > 0 ? false : true);
|
|
}
|
|
|
|
int
|
|
CoreAudioPCM::set_device_sample_rate_id (AudioDeviceID id, float rate, bool input)
|
|
{
|
|
std::vector<int>::iterator intIter;
|
|
OSStatus err;
|
|
UInt32 size = 0;
|
|
|
|
if (current_sample_rate_id(id, input) == rate) {
|
|
return 0;
|
|
}
|
|
|
|
Float64 newNominalRate = rate;
|
|
size = sizeof (Float64);
|
|
|
|
err = SetPropertyWrapper(id, NULL, 0, input, kAudioDevicePropertyNominalSampleRate, size, &newNominalRate);
|
|
if (err != noErr) {
|
|
fprintf(stderr, "CoreAudioPCM: failed to set samplerate\n");
|
|
return 0;
|
|
}
|
|
|
|
int timeout = 3000; // 3 sec
|
|
while (--timeout > 0) {
|
|
if (current_sample_rate_id(id, input) == rate) {
|
|
break;
|
|
}
|
|
Glib::usleep (1000);
|
|
}
|
|
fprintf(stderr, "CoreAudioPCM: CoreAudio: Setting SampleRate took %d ms.\n", (3000 - timeout));
|
|
|
|
if (timeout == 0) {
|
|
fprintf(stderr, "CoreAudioPCM: CoreAudio: Setting SampleRate timed out.\n");
|
|
return -1;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
CoreAudioPCM::set_device_sample_rate (uint32_t device_id, float rate, bool input)
|
|
{
|
|
return set_device_sample_rate_id(_device_ids[device_id], rate, input);
|
|
}
|
|
|
|
void
|
|
CoreAudioPCM::discover()
|
|
{
|
|
OSStatus err;
|
|
UInt32 size = 0;
|
|
|
|
if (pthread_mutex_trylock (&_discovery_lock)) {
|
|
return;
|
|
}
|
|
|
|
if (_device_ids) {
|
|
delete _device_ids; _device_ids = 0;
|
|
free(_device_ins); _device_ins = 0;
|
|
free(_device_outs); _device_outs = 0;
|
|
}
|
|
_devices.clear();
|
|
|
|
err = GetHardwarePropertyInfoWrapper (kAudioHardwarePropertyDevices, &size);
|
|
|
|
_n_devices = size / sizeof (AudioDeviceID);
|
|
size = _n_devices * sizeof (AudioDeviceID);
|
|
|
|
_device_ids = new AudioDeviceID[_n_devices];
|
|
_device_ins = (uint32_t*) calloc(_n_devices, sizeof(uint32_t));
|
|
_device_outs = (uint32_t*) calloc(_n_devices, sizeof(uint32_t));
|
|
|
|
assert(_device_ins && _device_outs && _device_ids);
|
|
if (!_device_ins || !_device_ins || !_device_ids) {
|
|
fprintf(stderr, "OUT OF MEMORY\n");
|
|
_device_ids = 0;
|
|
_device_ins = 0;
|
|
_device_outs = 0;
|
|
pthread_mutex_unlock (&_discovery_lock);
|
|
return;
|
|
}
|
|
|
|
err = GetHardwarePropertyWrapper (kAudioHardwarePropertyDevices, &size, _device_ids);
|
|
|
|
for (size_t idx = 0; idx < _n_devices; ++idx) {
|
|
size = 64;
|
|
char deviceName[64];
|
|
err = GetPropertyWrapper (_device_ids[idx], 0, 0, kAudioDevicePropertyDeviceName, &size, deviceName);
|
|
|
|
if (kAudioHardwareNoError != err) {
|
|
fprintf(stderr, "CoreAudioPCM: device name query failed\n");
|
|
continue;
|
|
}
|
|
|
|
UInt32 inputChannelCount = available_channels(idx, true);
|
|
UInt32 outputChannelCount = available_channels(idx, false);
|
|
|
|
{
|
|
std::string dn = deviceName;
|
|
_device_ins[idx] = inputChannelCount;
|
|
_device_outs[idx] = outputChannelCount;
|
|
#ifndef NDEBUG
|
|
printf("CoreAudio Device: #%ld (id:%lu) '%s' in:%u out:%u\n", idx,
|
|
(long unsigned int)_device_ids[idx],
|
|
deviceName,
|
|
(unsigned int)inputChannelCount, (unsigned int)outputChannelCount);
|
|
#endif
|
|
if (outputChannelCount > 0 || inputChannelCount > 0) {
|
|
_devices.insert (std::pair<size_t, std::string> (idx, dn));
|
|
}
|
|
if (inputChannelCount > 0) {
|
|
_input_devices.insert (std::pair<size_t, std::string> (idx, dn));
|
|
}
|
|
if (outputChannelCount > 0) {
|
|
_output_devices.insert (std::pair<size_t, std::string> (idx, dn));
|
|
}
|
|
if (outputChannelCount > 0 && inputChannelCount > 0) {
|
|
_duplex_devices.insert (std::pair<size_t, std::string> (idx, dn));
|
|
}
|
|
}
|
|
}
|
|
pthread_mutex_unlock (&_discovery_lock);
|
|
}
|
|
|
|
void
|
|
CoreAudioPCM::xrun_callback ()
|
|
{
|
|
#ifndef NDEBUG
|
|
printf("Coreaudio XRUN\n");
|
|
#endif
|
|
if (_xrun_callback) {
|
|
_xrun_callback(_xrun_arg);
|
|
}
|
|
}
|
|
|
|
void
|
|
CoreAudioPCM::buffer_size_callback ()
|
|
{
|
|
_samples_per_period = current_buffer_size_id(_active_device_id);
|
|
|
|
if (_buffer_size_callback) {
|
|
_buffer_size_callback(_buffer_size_arg);
|
|
}
|
|
}
|
|
|
|
void
|
|
CoreAudioPCM::sample_rate_callback ()
|
|
{
|
|
#ifndef NDEBUG
|
|
printf("Sample Rate Changed!\n");
|
|
#endif
|
|
if (_sample_rate_callback) {
|
|
_sample_rate_callback(_sample_rate_arg);
|
|
}
|
|
}
|
|
|
|
void
|
|
CoreAudioPCM::pcm_stop ()
|
|
{
|
|
if (!_auhal) return;
|
|
|
|
AudioOutputUnitStop(_auhal);
|
|
if (_state == 0) {
|
|
#ifdef COREAUDIO_108
|
|
AudioObjectPropertyAddress prop;
|
|
prop.mScope = kAudioObjectPropertyScopeGlobal;
|
|
prop.mElement = 0;
|
|
if (_active_device_id > 0) {
|
|
prop.mSelector = kAudioDeviceProcessorOverload;
|
|
AudioObjectRemovePropertyListener(_active_device_id, &prop, &property_callback_ptr, this);
|
|
prop.mSelector = kAudioDevicePropertyBufferFrameSize;
|
|
AudioObjectRemovePropertyListener(_active_device_id, &prop, &property_callback_ptr, this);
|
|
prop.mSelector = kAudioDevicePropertyNominalSampleRate;
|
|
AudioObjectRemovePropertyListener(_active_device_id, &prop, &property_callback_ptr, this);
|
|
}
|
|
#else
|
|
if (_active_device_id > 0) {
|
|
AudioDeviceRemovePropertyListener(_active_device_id, 0, true, kAudioDeviceProcessorOverload, property_callback_ptr);
|
|
AudioDeviceRemovePropertyListener(_active_device_id, 0, true, kAudioDevicePropertyBufferFrameSize, property_callback_ptr);
|
|
AudioDeviceRemovePropertyListener(_active_device_id, 0, true, kAudioDevicePropertyNominalSampleRate, property_callback_ptr);
|
|
}
|
|
#endif
|
|
}
|
|
if (_aggregate_plugin_id) {
|
|
destroy_aggregate_device();
|
|
discover();
|
|
}
|
|
|
|
AudioUnitUninitialize(_auhal);
|
|
#ifdef COREAUDIO_108
|
|
AudioComponentInstanceDispose(_auhal);
|
|
#else
|
|
CloseComponent(_auhal);
|
|
#endif
|
|
_auhal = 0;
|
|
_state = -1;
|
|
_capture_channels = 0;
|
|
_playback_channels = 0;
|
|
_aggregate_plugin_id = 0;
|
|
_aggregate_device_id = 0;
|
|
_active_device_id = 0;
|
|
|
|
free(_input_audio_buffer_list);
|
|
_input_audio_buffer_list = 0;
|
|
|
|
_input_names.clear();
|
|
_output_names.clear();
|
|
|
|
_error_callback = 0;
|
|
_process_callback = 0;
|
|
_xrun_callback = 0;
|
|
}
|
|
|
|
#ifndef NDEBUG
|
|
static void PrintStreamDesc (AudioStreamBasicDescription *inDesc)
|
|
{
|
|
printf ("- - - - - - - - - - - - - - - - - - - -\n");
|
|
printf (" Sample Rate:%.2f", inDesc->mSampleRate);
|
|
printf (" Format ID:%.*s\n", (int)sizeof(inDesc->mFormatID), (char*)&inDesc->mFormatID);
|
|
printf (" Format Flags:%X\n", (unsigned int)inDesc->mFormatFlags);
|
|
printf (" Bytes per Packet:%d\n", (int)inDesc->mBytesPerPacket);
|
|
printf (" Frames per Packet:%d\n", (int)inDesc->mFramesPerPacket);
|
|
printf (" Bytes per Frame:%d\n", (int)inDesc->mBytesPerFrame);
|
|
printf (" Channels per Frame:%d\n", (int)inDesc->mChannelsPerFrame);
|
|
printf (" Bits per Channel:%d\n", (int)inDesc->mBitsPerChannel);
|
|
printf ("- - - - - - - - - - - - - - - - - - - -\n");
|
|
}
|
|
#endif
|
|
|
|
int
|
|
CoreAudioPCM::set_device_buffer_size_id (AudioDeviceID id, uint32_t samples_per_period)
|
|
{
|
|
OSStatus err;
|
|
UInt32 uint32val;
|
|
|
|
uint32val = samples_per_period;
|
|
err = SetPropertyWrapper(id, NULL, 0, true, kAudioDevicePropertyBufferFrameSize, sizeof(UInt32), &uint32val);
|
|
if (err != noErr) { return -1; }
|
|
err = SetPropertyWrapper(id, NULL, 0, false, kAudioDevicePropertyBufferFrameSize, sizeof(UInt32), &uint32val);
|
|
if (err != noErr) { return -1; }
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
CoreAudioPCM::set_samples_per_period (uint32_t n_samples)
|
|
{
|
|
|
|
if (_state != 0 || _active_device_id == 0) {
|
|
return -1;
|
|
}
|
|
set_device_buffer_size_id (_active_device_id, n_samples);
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
CoreAudioPCM::pcm_start (
|
|
uint32_t device_id_in, uint32_t device_id_out,
|
|
uint32_t sample_rate, uint32_t samples_per_period,
|
|
int (process_callback (void*, const uint32_t, const uint64_t)), void *process_arg)
|
|
{
|
|
|
|
assert(_device_ids);
|
|
std::string errorMsg;
|
|
_state = -2;
|
|
|
|
// TODO add "none' device to force half-duplex
|
|
|
|
if (device_id_out >= _n_devices || device_id_in >= _n_devices) {
|
|
return -1;
|
|
}
|
|
|
|
pthread_mutex_lock (&_discovery_lock);
|
|
|
|
_process_callback = process_callback;
|
|
_process_arg = process_arg;
|
|
_samples_per_period = samples_per_period;
|
|
_cur_samples_per_period = 0;
|
|
_active_device_id = 0;
|
|
_capture_channels = 0;
|
|
_playback_channels = 0;
|
|
|
|
const uint32_t chn_in = _device_ins[device_id_in] + ((device_id_out != device_id_in) ? _device_ins[device_id_out] : 0);
|
|
const uint32_t chn_out = _device_outs[device_id_out] + ((device_id_out != device_id_in) ? _device_outs[device_id_in] : 0);
|
|
|
|
assert (chn_in > 0 || chn_out > 0);
|
|
|
|
ComponentResult err;
|
|
UInt32 uint32val;
|
|
UInt32 size;
|
|
AudioDeviceID device_id;
|
|
AudioStreamBasicDescription srcFormat, dstFormat;
|
|
|
|
AudioComponentDescription cd = {kAudioUnitType_Output, kAudioUnitSubType_HALOutput, kAudioUnitManufacturer_Apple, 0, 0};
|
|
AudioComponent HALOutput = AudioComponentFindNext(NULL, &cd);
|
|
if (!HALOutput) { errorMsg="AudioComponentFindNext"; goto error; }
|
|
|
|
err = AudioComponentInstanceNew(HALOutput, &_auhal);
|
|
if (err != noErr) { errorMsg="AudioComponentInstanceNew"; goto error; }
|
|
|
|
err = AudioUnitInitialize(_auhal);
|
|
if (err != noErr) { errorMsg="AudioUnitInitialize"; goto error; }
|
|
|
|
// explicitly change samplerate of the devices, TODO allow separate rates with aggregates
|
|
if (set_device_sample_rate(device_id_in, sample_rate, true)) {
|
|
errorMsg="Failed to set SampleRate, Capture Device"; goto error;
|
|
}
|
|
if (set_device_sample_rate(device_id_out, sample_rate, false)) {
|
|
errorMsg="Failed to set SampleRate, Playback Device"; goto error;
|
|
}
|
|
|
|
// explicitly request device buffer size
|
|
if (set_device_buffer_size_id(_device_ids[device_id_in], samples_per_period)) {
|
|
errorMsg="kAudioDevicePropertyBufferFrameSize, Input"; goto error;
|
|
}
|
|
if (set_device_buffer_size_id(_device_ids[device_id_out], samples_per_period)) {
|
|
errorMsg="kAudioDevicePropertyBufferFrameSize, Output"; goto error;
|
|
}
|
|
|
|
// create aggregate device..
|
|
if (_device_ids[device_id_in] != _device_ids[device_id_out]) {
|
|
if (0 == create_aggregate_device(_device_ids[device_id_in], _device_ids[device_id_out], sample_rate, &_aggregate_device_id)) {
|
|
device_id = _aggregate_device_id;
|
|
} else {
|
|
_aggregate_device_id = 0;
|
|
_aggregate_plugin_id = 0;
|
|
errorMsg="Cannot create Aggregate Device"; goto error;
|
|
}
|
|
} else {
|
|
device_id = _device_ids[device_id_out];
|
|
}
|
|
|
|
if (device_id_out != device_id_in) {
|
|
assert(_aggregate_device_id > 0);
|
|
}
|
|
|
|
// enableIO to progress further
|
|
uint32val = (chn_in > 0) ? 1 : 0;
|
|
err = AudioUnitSetProperty(_auhal, kAudioOutputUnitProperty_EnableIO, kAudioUnitScope_Input, AUHAL_INPUT_ELEMENT, &uint32val, sizeof(UInt32));
|
|
if (err != noErr) { errorMsg="kAudioOutputUnitProperty_EnableIO, Input"; goto error; }
|
|
|
|
uint32val = (chn_out > 0) ? 1 : 0;
|
|
err = AudioUnitSetProperty(_auhal, kAudioOutputUnitProperty_EnableIO, kAudioUnitScope_Output, AUHAL_OUTPUT_ELEMENT, &uint32val, sizeof(UInt32));
|
|
if (err != noErr) { errorMsg="kAudioOutputUnitProperty_EnableIO, Output"; goto error; }
|
|
|
|
err = AudioUnitSetProperty(_auhal, kAudioOutputUnitProperty_CurrentDevice, kAudioUnitScope_Global, 0, &device_id, sizeof(AudioDeviceID));
|
|
if (err != noErr) { errorMsg="kAudioOutputUnitProperty_CurrentDevice, Input"; goto error; }
|
|
|
|
if (chn_in > 0) {
|
|
// set sample format
|
|
srcFormat.mSampleRate = sample_rate;
|
|
srcFormat.mFormatID = kAudioFormatLinearPCM;
|
|
srcFormat.mFormatFlags = kAudioFormatFlagsNativeFloatPacked | kLinearPCMFormatFlagIsNonInterleaved;
|
|
srcFormat.mBytesPerPacket = sizeof(float);
|
|
srcFormat.mFramesPerPacket = 1;
|
|
srcFormat.mBytesPerFrame = sizeof(float);
|
|
srcFormat.mChannelsPerFrame = chn_in;
|
|
srcFormat.mBitsPerChannel = 32;
|
|
|
|
err = AudioUnitSetProperty(_auhal, kAudioUnitProperty_StreamFormat, kAudioUnitScope_Output, AUHAL_INPUT_ELEMENT, &srcFormat, sizeof(AudioStreamBasicDescription));
|
|
if (err != noErr) { errorMsg="kAudioUnitProperty_StreamFormat, Output"; goto error; }
|
|
|
|
err = AudioUnitSetProperty(_auhal, kAudioUnitProperty_MaximumFramesPerSlice, kAudioUnitScope_Global, AUHAL_INPUT_ELEMENT, (UInt32*)&_samples_per_period, sizeof(UInt32));
|
|
if (err != noErr) { errorMsg="kAudioUnitProperty_MaximumFramesPerSlice, Input"; goto error; }
|
|
}
|
|
|
|
if (chn_out > 0) {
|
|
dstFormat.mSampleRate = sample_rate;
|
|
dstFormat.mFormatID = kAudioFormatLinearPCM;
|
|
dstFormat.mFormatFlags = kAudioFormatFlagsNativeFloatPacked | kLinearPCMFormatFlagIsNonInterleaved;
|
|
dstFormat.mBytesPerPacket = sizeof(float);
|
|
dstFormat.mFramesPerPacket = 1;
|
|
dstFormat.mBytesPerFrame = sizeof(float);
|
|
dstFormat.mChannelsPerFrame = chn_out;
|
|
dstFormat.mBitsPerChannel = 32;
|
|
|
|
err = AudioUnitSetProperty(_auhal, kAudioUnitProperty_StreamFormat, kAudioUnitScope_Input, AUHAL_OUTPUT_ELEMENT, &dstFormat, sizeof(AudioStreamBasicDescription));
|
|
if (err != noErr) { errorMsg="kAudioUnitProperty_StreamFormat Input"; goto error; }
|
|
|
|
err = AudioUnitSetProperty(_auhal, kAudioUnitProperty_MaximumFramesPerSlice, kAudioUnitScope_Global, AUHAL_OUTPUT_ELEMENT, (UInt32*)&_samples_per_period, sizeof(UInt32));
|
|
if (err != noErr) { errorMsg="kAudioUnitProperty_MaximumFramesPerSlice, Output"; goto error; }
|
|
}
|
|
|
|
/* read back stream descriptions */
|
|
if (chn_in > 0) {
|
|
size = sizeof(AudioStreamBasicDescription);
|
|
err = AudioUnitGetProperty(_auhal, kAudioUnitProperty_StreamFormat, kAudioUnitScope_Output, AUHAL_INPUT_ELEMENT, &srcFormat, &size);
|
|
if (err != noErr) { errorMsg="Get kAudioUnitProperty_StreamFormat, Output"; goto error; }
|
|
_capture_channels = srcFormat.mChannelsPerFrame;
|
|
#ifndef NDEBUG
|
|
PrintStreamDesc(&srcFormat);
|
|
#endif
|
|
}
|
|
|
|
if (chn_out > 0) {
|
|
size = sizeof(AudioStreamBasicDescription);
|
|
err = AudioUnitGetProperty(_auhal, kAudioUnitProperty_StreamFormat, kAudioUnitScope_Input, AUHAL_OUTPUT_ELEMENT, &dstFormat, &size);
|
|
if (err != noErr) { errorMsg="Get kAudioUnitProperty_StreamFormat, Input"; goto error; }
|
|
_playback_channels = dstFormat.mChannelsPerFrame;
|
|
|
|
#ifndef NDEBUG
|
|
PrintStreamDesc(&dstFormat);
|
|
#endif
|
|
}
|
|
|
|
/* prepare buffers for input */
|
|
if (_capture_channels > 0) {
|
|
_input_audio_buffer_list = (AudioBufferList*)malloc(sizeof(AudioBufferList) + (_capture_channels - 1) * sizeof(AudioBuffer));
|
|
assert(_input_audio_buffer_list);
|
|
if (!_input_audio_buffer_list) { errorMsg="Out of Memory."; goto error; }
|
|
}
|
|
|
|
_active_device_id = device_id;
|
|
|
|
// add Listeners
|
|
err = add_listener (_active_device_id, kAudioDeviceProcessorOverload, this);
|
|
if (err != noErr) { errorMsg="kAudioDeviceProcessorOverload, Listen"; goto error; }
|
|
|
|
err = add_listener (_active_device_id, kAudioDevicePropertyBufferFrameSize, this);
|
|
if (err != noErr) { errorMsg="kAudioDevicePropertyBufferFrameSize, Listen"; goto error; }
|
|
|
|
err = add_listener (_active_device_id, kAudioDevicePropertyNominalSampleRate, this);
|
|
if (err != noErr) { errorMsg="kAudioDevicePropertyBufferFrameSize, Listen"; goto error; }
|
|
|
|
_samples_per_period = current_buffer_size_id(_active_device_id);
|
|
|
|
// Setup callback
|
|
AURenderCallbackStruct renderCallback;
|
|
memset (&renderCallback, 0, sizeof (renderCallback));
|
|
renderCallback.inputProc = render_callback_ptr;
|
|
renderCallback.inputProcRefCon = this;
|
|
if (_playback_channels == 0) {
|
|
err = AudioUnitSetProperty(_auhal,
|
|
kAudioOutputUnitProperty_SetInputCallback,
|
|
kAudioUnitScope_Output, 1,
|
|
&renderCallback, sizeof (renderCallback));
|
|
} else {
|
|
err = AudioUnitSetProperty(_auhal,
|
|
kAudioUnitProperty_SetRenderCallback,
|
|
kAudioUnitScope_Output, 0,
|
|
&renderCallback, sizeof (renderCallback));
|
|
}
|
|
|
|
if (err != noErr) { errorMsg="kAudioUnitProperty_SetRenderCallback"; goto error; }
|
|
|
|
/* setup complete, now get going.. */
|
|
if (AudioOutputUnitStart(_auhal) == noErr) {
|
|
_input_names.clear();
|
|
_output_names.clear();
|
|
cache_port_names (device_id, true);
|
|
cache_port_names (device_id, false);
|
|
_state = 0;
|
|
pthread_mutex_unlock (&_discovery_lock);
|
|
|
|
// kick device
|
|
if (set_device_buffer_size_id(_active_device_id, samples_per_period)) {
|
|
errorMsg="kAudioDevicePropertyBufferFrameSize"; goto error;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
error:
|
|
char *rv = (char*)&err;
|
|
fprintf(stderr, "CoreaudioPCM Error: %c%c%c%c %s\n", rv[0], rv[1], rv[2], rv[3], errorMsg.c_str());
|
|
pcm_stop();
|
|
_state = -3;
|
|
_active_device_id = 0;
|
|
pthread_mutex_unlock (&_discovery_lock);
|
|
return -1;
|
|
}
|
|
|
|
void
|
|
CoreAudioPCM::cache_port_names(AudioDeviceID id, bool input)
|
|
{
|
|
uint32_t n_chn;
|
|
|
|
if (input) {
|
|
n_chn = _capture_channels;
|
|
} else {
|
|
n_chn = _playback_channels;;
|
|
}
|
|
#ifdef COREAUDIO_108
|
|
AudioObjectPropertyAddress property_address;
|
|
property_address.mSelector = kAudioObjectPropertyElementName;
|
|
property_address.mScope = input ? kAudioDevicePropertyScopeInput: kAudioDevicePropertyScopeOutput;
|
|
#endif
|
|
|
|
for (uint32_t c = 0; c < n_chn; ++c) {
|
|
CFStringRef name = NULL;
|
|
std::stringstream ss;
|
|
UInt32 size = 0;
|
|
OSStatus err;
|
|
|
|
#ifdef COREAUDIO_108
|
|
property_address.mElement = c + 1;
|
|
err = AudioObjectGetPropertyDataSize(id, &property_address, 0, NULL, &size);
|
|
#else
|
|
err = AudioDeviceGetPropertyInfo (id, c + 1, input,
|
|
kAudioDevicePropertyChannelNameCFString,
|
|
&size,
|
|
NULL);
|
|
#endif
|
|
|
|
if (err == kAudioHardwareNoError) {
|
|
#ifdef COREAUDIO_108
|
|
err = AudioObjectGetPropertyData(id, &property_address, c + 1, NULL, &size, &name);
|
|
#else
|
|
err = AudioDeviceGetProperty (id, c + 1, input,
|
|
kAudioDevicePropertyChannelNameCFString,
|
|
&size,
|
|
&name);
|
|
#endif
|
|
}
|
|
|
|
bool decoded = false;
|
|
char* cstr_name = 0;
|
|
if (err == kAudioHardwareNoError) {
|
|
CFIndex length = CFStringGetLength(name);
|
|
CFIndex maxSize = CFStringGetMaximumSizeForEncoding(length, kCFStringEncodingUTF8);
|
|
cstr_name = new char[maxSize];
|
|
decoded = CFStringGetCString(name, cstr_name, maxSize, kCFStringEncodingUTF8);
|
|
}
|
|
|
|
ss << (c + 1);
|
|
|
|
if (cstr_name && decoded && (0 != std::strlen(cstr_name) ) ) {
|
|
ss << " - " << cstr_name;
|
|
}
|
|
#if 0
|
|
printf("%s %d Name: %s\n", input ? "Input" : "Output", c+1, ss.str().c_str());
|
|
#endif
|
|
|
|
if (input) {
|
|
_input_names.push_back (ss.str());
|
|
} else {
|
|
_output_names.push_back (ss.str());
|
|
}
|
|
|
|
if (name) {
|
|
CFRelease (name);
|
|
}
|
|
delete [] cstr_name;
|
|
}
|
|
}
|
|
|
|
std::string
|
|
CoreAudioPCM::cached_port_name(uint32_t port, bool input) const
|
|
{
|
|
if (_state != 0) { return ""; }
|
|
|
|
if (input) {
|
|
if (port >= _input_names.size()) {
|
|
return "";
|
|
}
|
|
return _input_names[port];
|
|
} else {
|
|
if (port >= _output_names.size()) {
|
|
return "";
|
|
}
|
|
return _output_names[port];
|
|
}
|
|
}
|
|
|
|
|
|
OSStatus
|
|
CoreAudioPCM::render_callback (
|
|
AudioUnitRenderActionFlags* ioActionFlags,
|
|
const AudioTimeStamp* inTimeStamp,
|
|
UInt32 inBusNumber,
|
|
UInt32 inNumberFrames,
|
|
AudioBufferList* ioData)
|
|
{
|
|
OSStatus retVal = kAudioHardwareNoError;
|
|
|
|
if (_samples_per_period < inNumberFrames) {
|
|
#ifndef NDEBUG
|
|
printf("samples per period exceeds configured value, cycle skipped (%u < %u)\n",
|
|
(unsigned int)_samples_per_period, (unsigned int)inNumberFrames);
|
|
#endif
|
|
for (uint32_t i = 0; _playback_channels > 0 && i < ioData->mNumberBuffers; ++i) {
|
|
float* ob = (float*) ioData->mBuffers[i].mData;
|
|
memset(ob, 0, sizeof(float) * inNumberFrames);
|
|
}
|
|
return noErr;
|
|
}
|
|
|
|
assert(_playback_channels == 0 || ioData->mNumberBuffers == _playback_channels);
|
|
|
|
UInt64 cur_cycle_start = AudioGetCurrentHostTime ();
|
|
_cur_samples_per_period = inNumberFrames;
|
|
|
|
if (_capture_channels > 0) {
|
|
_input_audio_buffer_list->mNumberBuffers = _capture_channels;
|
|
for (uint32_t i = 0; i < _capture_channels; ++i) {
|
|
_input_audio_buffer_list->mBuffers[i].mNumberChannels = 1;
|
|
_input_audio_buffer_list->mBuffers[i].mDataByteSize = inNumberFrames * sizeof(float);
|
|
_input_audio_buffer_list->mBuffers[i].mData = NULL;
|
|
}
|
|
|
|
retVal = AudioUnitRender(_auhal, ioActionFlags, inTimeStamp, AUHAL_INPUT_ELEMENT, inNumberFrames, _input_audio_buffer_list);
|
|
}
|
|
|
|
if (retVal != kAudioHardwareNoError) {
|
|
#if 0
|
|
char *rv = (char*)&retVal;
|
|
printf("ERR %c%c%c%c\n", rv[0], rv[1], rv[2], rv[3]);
|
|
#endif
|
|
if (_error_callback) {
|
|
_error_callback(_error_arg);
|
|
}
|
|
return retVal;
|
|
}
|
|
|
|
_output_audio_buffer_list = ioData;
|
|
|
|
_in_process = true;
|
|
|
|
int rv = -1;
|
|
|
|
if (_process_callback) {
|
|
rv = _process_callback(_process_arg, inNumberFrames, cur_cycle_start);
|
|
}
|
|
|
|
_in_process = false;
|
|
|
|
if (rv != 0 && _playback_channels > 0) {
|
|
// clear output
|
|
for (uint32_t i = 0; i < ioData->mNumberBuffers; ++i) {
|
|
float* ob = (float*) ioData->mBuffers[i].mData;
|
|
memset(ob, 0, sizeof(float) * inNumberFrames);
|
|
}
|
|
}
|
|
return noErr;
|
|
}
|
|
|
|
int
|
|
CoreAudioPCM::get_capture_channel (uint32_t chn, float *input, uint32_t n_samples)
|
|
{
|
|
if (!_in_process || chn > _capture_channels || n_samples > _cur_samples_per_period) {
|
|
return -1;
|
|
}
|
|
assert(_input_audio_buffer_list->mNumberBuffers > chn);
|
|
memcpy((void*)input, (void*)_input_audio_buffer_list->mBuffers[chn].mData, sizeof(float) * n_samples);
|
|
return 0;
|
|
|
|
}
|
|
int
|
|
CoreAudioPCM::set_playback_channel (uint32_t chn, const float *output, uint32_t n_samples)
|
|
{
|
|
if (!_in_process || chn > _playback_channels || n_samples > _cur_samples_per_period) {
|
|
return -1;
|
|
}
|
|
|
|
assert(_output_audio_buffer_list && _output_audio_buffer_list->mNumberBuffers > chn);
|
|
memcpy((void*)_output_audio_buffer_list->mBuffers[chn].mData, (void*)output, sizeof(float) * n_samples);
|
|
return 0;
|
|
}
|
|
|
|
|
|
void
|
|
CoreAudioPCM::launch_control_app (uint32_t device_id)
|
|
{
|
|
if (device_id >= _n_devices) {
|
|
return;
|
|
}
|
|
|
|
CFStringRef config_app = NULL;
|
|
UInt32 size = sizeof (config_app);
|
|
OSStatus err;
|
|
|
|
err = GetPropertyWrapper(_device_ids[device_id], 0, false, kAudioDevicePropertyConfigurationApplication, &size, &config_app);
|
|
if (kAudioHardwareNoError != err) {
|
|
return;
|
|
}
|
|
|
|
FSRef appFSRef;
|
|
if (noErr == LSFindApplicationForInfo(kLSUnknownCreator, config_app, NULL, &appFSRef, NULL)) {
|
|
LSOpenFSRef(&appFSRef, NULL);
|
|
} else {
|
|
// open default AudioMIDISetup if device app is not found
|
|
CFStringRef audioMidiSetup = CFStringCreateWithCString(kCFAllocatorDefault, "com.apple.audio.AudioMIDISetup", kCFStringEncodingMacRoman);
|
|
if (noErr == LSFindApplicationForInfo(kLSUnknownCreator, audioMidiSetup, NULL, &appFSRef, NULL)) {
|
|
LSOpenFSRef(&appFSRef, NULL);
|
|
}
|
|
}
|
|
if (config_app) {
|
|
CFRelease (config_app);
|
|
}
|
|
}
|