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/*************************************************************************** |
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* * |
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* LinuxSampler - modular, streaming capable sampler * |
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* * |
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* Copyright (C) 2009 Grigor Iliev * |
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* Copyright (C) 2011-2013 Andreas Persson * |
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* Copyright (C) 2014-2020 Christian Schoenebeck * |
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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., 59 Temple Place, Suite 330, Boston, * |
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* MA 02111-1307 USA * |
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***************************************************************************/ |
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|
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#include "AudioOutputDeviceCoreAudio.h" |
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|
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#include "../../common/global_private.h" |
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|
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namespace LinuxSampler { |
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|
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void AudioOutputDeviceCoreAudio::AudioQueueListener ( |
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void *inUserData, AudioQueueRef inAQ, AudioQueuePropertyID inID |
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) { |
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switch(inID) { |
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case kAudioQueueProperty_IsRunning: |
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|
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break; |
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case kAudioQueueProperty_CurrentDevice: |
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|
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break; |
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} |
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} |
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|
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void AudioOutputDeviceCoreAudio::HandleOutputBuffer ( |
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void *aqData, |
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AudioQueueRef inAQ, |
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AudioQueueBufferRef inBuffer |
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) { |
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AQPlayerState* pAqData = (AQPlayerState*) aqData; |
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if (atomic_read(&(pAqData->mIsRunning)) == 0) { |
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AudioQueueFlush(pAqData->mQueue); |
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AudioQueueStop (pAqData->mQueue, true); |
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return; |
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} |
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|
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if(atomic_read(&(pAqData->pDevice->restartQueue))) return; |
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|
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uint bufferSize = pAqData->pDevice->uiBufferSize; |
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|
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// let all connected engines render 'fragmentSize' sample points |
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pAqData->pDevice->RenderAudio(bufferSize); |
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|
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Float32* pDataBuf = (Float32*)(inBuffer->mAudioData); |
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|
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uint uiCoreAudioChannels = pAqData->pDevice->uiCoreAudioChannels; |
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for (int c = 0; c < uiCoreAudioChannels; c++) { |
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float* in = pAqData->pDevice->Channels[c]->Buffer(); |
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for (int i = 0, o = c; i < bufferSize; i++ , o += uiCoreAudioChannels) { |
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pDataBuf[o] = in[i]; |
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} |
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} |
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|
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inBuffer->mAudioDataByteSize = (uiCoreAudioChannels * 4) * bufferSize; |
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|
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OSStatus res = AudioQueueEnqueueBuffer(pAqData->mQueue, inBuffer, 0, NULL); |
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if(res) std::cerr << "AudioQueueEnqueueBuffer: Error " << res << std::endl; |
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} |
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|
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void AudioOutputDeviceCoreAudio::DeviceChanged() { |
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dmsg(1,("Restarting audio queue...")); |
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atomic_set(&restartQueue, 1); |
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} |
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|
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AudioOutputDeviceCoreAudio::AudioOutputDeviceCoreAudio ( |
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std::map<String,DeviceCreationParameter*> Parameters |
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) : AudioOutputDevice(Parameters), Thread(true, true, 1, 0), CurrentDevice(0) { |
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|
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dmsg(2,("AudioOutputDeviceCoreAudio::AudioOutputDeviceCoreAudio()\n")); |
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if(CAAudioDeviceListModel::GetModel()->GetOutputDeviceCount() < 1) { |
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throw Exception("No audio output device found"); |
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} |
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atomic_set(&pausedNew, 0); |
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pausedOld = 0; |
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atomic_set(&restartQueue, 0); |
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|
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uiCoreAudioChannels = ((DeviceCreationParameterInt*)Parameters["CHANNELS"])->ValueAsInt(); |
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uint samplerate = ((DeviceCreationParameterInt*)Parameters["SAMPLERATE"])->ValueAsInt(); |
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uiBufferNumber = ((DeviceCreationParameterInt*)Parameters["BUFFERS"])->ValueAsInt(); |
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uiBufferSize = ((DeviceCreationParameterInt*)Parameters["BUFFERSIZE"])->ValueAsInt(); |
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int device = 0; |
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try { device = ((ParameterDevice*)Parameters["DEVICE"])->GetDeviceIndex(); } |
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catch(Exception x) { } |
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|
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CurrentDevice = CAAudioDeviceListModel::GetModel()->GetOutputDevice(device); |
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CurrentDevice.AddListener(this); |
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|
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memset (&aqPlayerState.mDataFormat, 0, sizeof(AudioStreamBasicDescription)); |
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|
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aqPlayerState.mDataFormat.mSampleRate = samplerate; |
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aqPlayerState.mDataFormat.mFormatID = kAudioFormatLinearPCM; |
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|
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aqPlayerState.mDataFormat.mFormatFlags = |
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kLinearPCMFormatFlagIsFloat | kLinearPCMFormatFlagIsPacked; |
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|
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int samplesize = 4; |
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aqPlayerState.mDataFormat.mBytesPerPacket = uiCoreAudioChannels * samplesize; |
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aqPlayerState.mDataFormat.mFramesPerPacket = 1; |
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aqPlayerState.mDataFormat.mBytesPerFrame = uiCoreAudioChannels * samplesize; |
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aqPlayerState.mDataFormat.mChannelsPerFrame = uiCoreAudioChannels; |
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aqPlayerState.mDataFormat.mBitsPerChannel = 8 * samplesize; |
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aqPlayerState.mDataFormat.mReserved = 0; |
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|
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aqPlayerState.mBuffers = new AudioQueueBufferRef[uiBufferNumber]; |
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|
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aqPlayerState.bufferByteSize = |
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MaxSamplesPerCycle() * aqPlayerState.mDataFormat.mBytesPerFrame; |
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|
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aqPlayerState.mNumPacketsToRead = MaxSamplesPerCycle(); |
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|
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aqPlayerState.pDevice = this; |
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aqPlayerState.mQueue = NULL; |
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|
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uint fragmentSize = MaxSamplesPerCycle(); |
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// create audio channels for this audio device to which the sampler engines can write to |
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for (int i = 0; i < uiCoreAudioChannels; i++) { |
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this->Channels.push_back(new AudioChannel(i, fragmentSize)); |
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} |
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|
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StartThread(); |
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|
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if (!((DeviceCreationParameterBool*)Parameters["ACTIVE"])->ValueAsBool()) { |
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Stop(); |
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} |
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} |
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|
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AudioOutputDeviceCoreAudio::~AudioOutputDeviceCoreAudio() { |
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StopThread(); |
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|
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atomic_set(&(aqPlayerState.mIsRunning), 0); |
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{ |
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LockGuard lock(destroyMutex); |
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AudioQueueDispose(aqPlayerState.mQueue, true); |
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} |
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delete [] aqPlayerState.mBuffers; |
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|
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CurrentDevice.RemoveListener(this); |
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} |
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|
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String AudioOutputDeviceCoreAudio::Name() { |
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return "COREAUDIO"; |
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} |
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|
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String AudioOutputDeviceCoreAudio::Description() { |
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return "Apple CoreAudio"; |
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} |
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|
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String AudioOutputDeviceCoreAudio::Version() { |
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String s = "$Revision$"; |
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return s.substr(11, s.size() - 13); // cut dollar signs, spaces and CVS macro keyword |
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} |
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|
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void AudioOutputDeviceCoreAudio::Play() { |
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atomic_set(&pausedNew, 0); |
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} |
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|
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bool AudioOutputDeviceCoreAudio::IsPlaying() { |
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return !atomic_read(&pausedNew); |
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} |
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|
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void AudioOutputDeviceCoreAudio::Stop() { |
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atomic_set(&pausedNew, 1); |
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} |
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|
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uint AudioOutputDeviceCoreAudio::MaxSamplesPerCycle() { |
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return uiBufferSize; |
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} |
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|
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uint AudioOutputDeviceCoreAudio::SampleRate() { |
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return aqPlayerState.mDataFormat.mSampleRate; |
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} |
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|
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String AudioOutputDeviceCoreAudio::Driver() { |
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return Name(); |
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} |
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|
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AudioChannel* AudioOutputDeviceCoreAudio::CreateChannel(uint ChannelNr) { |
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// just create a mix channel |
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return new AudioChannel(ChannelNr, Channel(ChannelNr % uiCoreAudioChannels)); |
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} |
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|
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void AudioOutputDeviceCoreAudio::FillBuffers() { |
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for (int i = 0; i < uiBufferNumber; ++i) { |
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HandleOutputBuffer ( |
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&aqPlayerState, |
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aqPlayerState.mQueue, |
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aqPlayerState.mBuffers[i] |
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); |
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} |
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} |
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|
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void AudioOutputDeviceCoreAudio::PrimeAudioQueue() { |
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OSStatus res = AudioQueuePrime(aqPlayerState.mQueue, 0, NULL); |
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if(res) { |
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String s = String("AudioQueuePrime: Error ") + ToString(res); |
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throw Exception(s); |
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} |
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} |
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|
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void AudioOutputDeviceCoreAudio::CreateAndStartAudioQueue() throw(Exception) { |
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OSStatus res = AudioQueueNewOutput ( |
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&aqPlayerState.mDataFormat, |
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HandleOutputBuffer, |
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&aqPlayerState, |
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CFRunLoopGetCurrent(), |
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kCFRunLoopCommonModes, |
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0, |
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&aqPlayerState.mQueue |
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); |
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|
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if(res) { |
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String s = String("AudioQueueNewOutput: Error ") + ToString(res); |
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throw Exception(s); |
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} |
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|
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CFStringRef devUID = CFStringCreateWithCString ( |
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NULL, CurrentDevice.GetUID().c_str(), kCFStringEncodingASCII |
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); |
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res = AudioQueueSetProperty ( |
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aqPlayerState.mQueue, |
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kAudioQueueProperty_CurrentDevice, |
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&devUID, sizeof(CFStringRef) |
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); |
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CFRelease(devUID); |
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|
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if(res) { |
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String s = String("Failed to set audio device: ") + ToString(res); |
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throw Exception(s); |
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} |
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|
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for (int i = 0; i < uiBufferNumber; ++i) { |
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res = AudioQueueAllocateBuffer ( |
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aqPlayerState.mQueue, |
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aqPlayerState.bufferByteSize, |
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&aqPlayerState.mBuffers[i] |
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); |
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|
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if(res) { |
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String s = String("AudioQueueAllocateBuffer: Error "); |
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throw Exception(s + ToString(res)); |
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} |
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} |
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|
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res = AudioQueueAddPropertyListener ( |
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aqPlayerState.mQueue, |
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kAudioQueueProperty_CurrentDevice, |
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AudioQueueListener, |
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NULL |
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); |
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if(res) std::cerr << "Failed to register device change listener: " << res << std::endl; |
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|
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res = AudioQueueAddPropertyListener ( |
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aqPlayerState.mQueue, |
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kAudioQueueProperty_IsRunning, |
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AudioQueueListener, |
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NULL |
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); |
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if(res) std::cerr << "Failed to register running listener: " << res << std::endl; |
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|
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Float32 gain = 1.0; |
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|
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res = AudioQueueSetParameter ( |
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aqPlayerState.mQueue, |
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kAudioQueueParam_Volume, |
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gain |
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); |
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|
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if(res) std::cerr << "AudioQueueSetParameter: Error " << res << std::endl; |
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|
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atomic_set(&(aqPlayerState.mIsRunning), 1); |
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FillBuffers(); |
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PrimeAudioQueue(); |
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|
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res = AudioQueueStart(aqPlayerState.mQueue, NULL); |
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if(res) { |
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String s = String("AudioQueueStart: Error ") + ToString(res); |
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throw Exception(s); |
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} |
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} |
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|
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void AudioOutputDeviceCoreAudio::DestroyAudioQueue() { |
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AudioQueueFlush(aqPlayerState.mQueue); |
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AudioQueueStop (aqPlayerState.mQueue, true); |
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AudioQueueDispose(aqPlayerState.mQueue, true); |
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aqPlayerState.mQueue = NULL; |
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} |
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|
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/** |
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* Entry point for the thread. |
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*/ |
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int AudioOutputDeviceCoreAudio::Main() { |
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dmsg(1,("CoreAudio thread started\n")); |
312 |
|
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#if DEBUG |
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Thread::setNameOfCaller("CoreAudio"); |
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#endif |
316 |
|
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OSStatus res; |
318 |
if(aqPlayerState.mQueue == NULL) { |
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/* |
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* Need to be run from this thread because of CFRunLoopGetCurrent() |
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* which returns the CFRunLoop object for the current thread. |
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*/ |
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try { CreateAndStartAudioQueue(); } |
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catch(Exception e) { |
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std::cerr << "Failed to star audio queue: " + e.Message() << std::endl; |
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return 0; |
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} |
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} |
329 |
|
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{ |
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LockGuard lock(destroyMutex); |
332 |
do { |
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if(atomic_read(&pausedNew) != pausedOld) { |
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pausedOld = atomic_read(&pausedNew); |
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|
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if(pausedOld) { |
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res = AudioQueuePause(aqPlayerState.mQueue); |
338 |
if(res) std::cerr << "AudioQueuePause: Error " << res << std::endl; |
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} else { |
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res = AudioQueuePrime(aqPlayerState.mQueue, 0, NULL); |
341 |
if(res) std::cerr << "AudioQueuePrime: Error " << res << std::endl; |
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res = AudioQueueStart(aqPlayerState.mQueue, NULL); |
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if(res) std::cerr << "AudioQueueStart: Error " << res << std::endl; |
344 |
} |
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} |
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|
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if(atomic_read(&restartQueue)) { |
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DestroyAudioQueue(); |
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CreateAndStartAudioQueue(); |
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atomic_set(&restartQueue, 0); |
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dmsg(1,("Audio queue restarted")); |
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} |
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|
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CFRunLoopRunInMode(kCFRunLoopDefaultMode, 0.2, false); |
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} while (atomic_read(&(aqPlayerState.mIsRunning))); |
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} |
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|
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dmsg(2,("CoreAudio thread stopped\n")); |
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|
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pthread_exit(NULL); |
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return 0; |
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} |
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|
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|
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// *************** ParameterDevice *************** |
366 |
// * |
367 |
|
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AudioOutputDeviceCoreAudio::ParameterDevice::ParameterDevice() : DeviceCreationParameterString() { |
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InitWithDefault(); // use default device |
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} |
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|
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AudioOutputDeviceCoreAudio::ParameterDevice::ParameterDevice(String s) |
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throw (Exception) : DeviceCreationParameterString(s) { |
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} |
375 |
|
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String AudioOutputDeviceCoreAudio::ParameterDevice::Description() { |
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return "Output device to be used"; |
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} |
379 |
|
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bool AudioOutputDeviceCoreAudio::ParameterDevice::Fix() { |
381 |
return true; |
382 |
} |
383 |
|
384 |
bool AudioOutputDeviceCoreAudio::ParameterDevice::Mandatory() { |
385 |
return false; |
386 |
} |
387 |
|
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std::map<String,DeviceCreationParameter*> |
389 |
AudioOutputDeviceCoreAudio::ParameterDevice::DependsAsParameters() { |
390 |
return std::map<String,DeviceCreationParameter*>(); // no dependencies |
391 |
} |
392 |
|
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optional<String> |
394 |
AudioOutputDeviceCoreAudio::ParameterDevice::DefaultAsString(std::map<String,String> Parameters) { |
395 |
CAAudioDeviceListModel* devs = CAAudioDeviceListModel::GetModel(); |
396 |
if (devs->GetOutputDeviceCount() < 1) { |
397 |
throw Exception("AudioOutputDeviceCoreAudio: Can't find any output device"); |
398 |
} |
399 |
UInt32 idx = devs->GetOutputDeviceIndex(devs->GetDefaultOutputDeviceID()); |
400 |
return CreateDeviceName(idx); |
401 |
} |
402 |
|
403 |
std::vector<String> |
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AudioOutputDeviceCoreAudio::ParameterDevice::PossibilitiesAsString(std::map<String,String> Parameters) { |
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std::vector<String> deviceNames; |
406 |
|
407 |
CAAudioDeviceListModel* devs = CAAudioDeviceListModel::GetModel(); |
408 |
for(int i = 0; i < devs->GetOutputDeviceCount(); i++) { |
409 |
if(devs->GetOutputDevice(i).GetChannelNumber() < 1) continue; |
410 |
|
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deviceNames.push_back(CreateDeviceName(i)); |
412 |
} |
413 |
|
414 |
return deviceNames; |
415 |
} |
416 |
|
417 |
String AudioOutputDeviceCoreAudio::ParameterDevice::CreateDeviceName(int devIndex) { |
418 |
CAAudioDeviceListModel* devs = CAAudioDeviceListModel::GetModel(); |
419 |
// Note that the space " " is used as delimiter to obtain the |
420 |
// device index. See GetDeviceIndex() |
421 |
return ToString(devIndex + 1) + " " + devs->GetOutputDevice(devIndex).GetName(); |
422 |
} |
423 |
|
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void AudioOutputDeviceCoreAudio::ParameterDevice::OnSetValue(String s) throw (Exception) { |
425 |
// not posssible, as parameter is fix |
426 |
} |
427 |
|
428 |
String AudioOutputDeviceCoreAudio::ParameterDevice::Name() { |
429 |
return "DEVICE"; |
430 |
} |
431 |
|
432 |
int AudioOutputDeviceCoreAudio::ParameterDevice::GetDeviceIndex() { |
433 |
String s = ValueAsString(); |
434 |
if(s.empty()) return -1; |
435 |
int n = (int) s.find(' '); |
436 |
s = s.substr(0, n); |
437 |
return ToInt(s) - 1; |
438 |
} |
439 |
|
440 |
// *************** ParameterSampleRate *************** |
441 |
// * |
442 |
|
443 |
AudioOutputDeviceCoreAudio::ParameterSampleRate::ParameterSampleRate() : |
444 |
AudioOutputDevice::ParameterSampleRate::ParameterSampleRate() { |
445 |
|
446 |
} |
447 |
|
448 |
AudioOutputDeviceCoreAudio::ParameterSampleRate::ParameterSampleRate(String s) : |
449 |
AudioOutputDevice::ParameterSampleRate::ParameterSampleRate(s) { |
450 |
|
451 |
} |
452 |
|
453 |
std::map<String,DeviceCreationParameter*> |
454 |
AudioOutputDeviceCoreAudio::ParameterSampleRate::DependsAsParameters() { |
455 |
static ParameterDevice device; |
456 |
std::map<String,DeviceCreationParameter*> dependencies; |
457 |
dependencies[device.Name()] = &device; |
458 |
return dependencies; |
459 |
} |
460 |
|
461 |
optional<int> |
462 |
AudioOutputDeviceCoreAudio::ParameterSampleRate::DefaultAsInt(std::map<String,String> Parameters) { |
463 |
dmsg(2,("AudioOutputDeviceCoreAudio::ParameterSampleRate::DefaultAsInt()\n")); |
464 |
ParameterDevice dev(Parameters["DEVICE"]); |
465 |
int samplerate = 44100; |
466 |
|
467 |
try { |
468 |
int idx = dev.GetDeviceIndex(); |
469 |
|
470 |
CAAudioDeviceListModel* devs = CAAudioDeviceListModel::GetModel(); |
471 |
samplerate = devs->GetOutputDevice(idx).GetDefaultSamplerate(); |
472 |
} catch(Exception e) { } |
473 |
|
474 |
return samplerate; |
475 |
} |
476 |
|
477 |
std::vector<int> |
478 |
AudioOutputDeviceCoreAudio::ParameterSampleRate::PossibilitiesAsInt(std::map<String,String> Parameters) { |
479 |
ParameterDevice dev(Parameters["DEVICE"]); |
480 |
std::vector<int> srates; |
481 |
|
482 |
try { |
483 |
int idx = dev.GetDeviceIndex(); |
484 |
CAAudioDeviceListModel* devs = CAAudioDeviceListModel::GetModel(); |
485 |
srates = devs->GetOutputDevice(idx).GetNominalSamplerates(); |
486 |
} catch(Exception x) { } |
487 |
|
488 |
return srates; |
489 |
} |
490 |
|
491 |
|
492 |
// *************** ParameterChannels *************** |
493 |
// * |
494 |
|
495 |
AudioOutputDeviceCoreAudio::ParameterChannels::ParameterChannels() : |
496 |
AudioOutputDevice::ParameterChannels::ParameterChannels() { |
497 |
|
498 |
} |
499 |
|
500 |
AudioOutputDeviceCoreAudio::ParameterChannels::ParameterChannels(String s) : |
501 |
AudioOutputDevice::ParameterChannels::ParameterChannels(s) { |
502 |
|
503 |
} |
504 |
|
505 |
optional<int> |
506 |
AudioOutputDeviceCoreAudio::ParameterChannels::DefaultAsInt(std::map<String,String> Parameters) { |
507 |
dmsg(2,("AudioOutputDeviceCoreAudio::ParameterChannels::DefaultAsInt()\n")); |
508 |
ParameterDevice dev(Parameters["DEVICE"]); |
509 |
int chns = 2; |
510 |
|
511 |
try { |
512 |
int idx = dev.GetDeviceIndex(); |
513 |
CAAudioDeviceListModel* devs = CAAudioDeviceListModel::GetModel(); |
514 |
chns = devs->GetOutputDevice(idx).GetChannelNumber(); |
515 |
} catch(Exception e) { } |
516 |
|
517 |
return chns; |
518 |
} |
519 |
|
520 |
std::vector<int> |
521 |
AudioOutputDeviceCoreAudio::ParameterChannels::PossibilitiesAsInt(std::map<String,String> Parameters) { |
522 |
ParameterDevice dev(Parameters["DEVICE"]); |
523 |
std::vector<int> chns; |
524 |
|
525 |
try { |
526 |
int idx = dev.GetDeviceIndex(); |
527 |
CAAudioDeviceListModel* devs = CAAudioDeviceListModel::GetModel(); |
528 |
for(int i = 1; i <= devs->GetOutputDevice(idx).GetChannelNumber(); i++) { |
529 |
chns.push_back(i); |
530 |
} |
531 |
} catch(Exception x) { } |
532 |
|
533 |
return chns; |
534 |
} |
535 |
|
536 |
// *************** ParameterBuffers *************** |
537 |
// * |
538 |
|
539 |
AudioOutputDeviceCoreAudio::ParameterBuffers::ParameterBuffers() : DeviceCreationParameterInt() { |
540 |
InitWithDefault(); |
541 |
} |
542 |
|
543 |
AudioOutputDeviceCoreAudio::ParameterBuffers::ParameterBuffers(String s) |
544 |
throw (Exception) : DeviceCreationParameterInt(s) { |
545 |
} |
546 |
|
547 |
String AudioOutputDeviceCoreAudio::ParameterBuffers::Description() { |
548 |
return "Number of audio buffer"; |
549 |
} |
550 |
|
551 |
bool AudioOutputDeviceCoreAudio::ParameterBuffers::Fix() { |
552 |
return true; |
553 |
} |
554 |
|
555 |
bool AudioOutputDeviceCoreAudio::ParameterBuffers::Mandatory() { |
556 |
return false; |
557 |
} |
558 |
|
559 |
std::map<String,DeviceCreationParameter*> |
560 |
AudioOutputDeviceCoreAudio::ParameterBuffers::DependsAsParameters() { |
561 |
return std::map<String,DeviceCreationParameter*>(); |
562 |
} |
563 |
|
564 |
optional<int> |
565 |
AudioOutputDeviceCoreAudio::ParameterBuffers::DefaultAsInt(std::map<String,String> Parameters) { |
566 |
return 3; |
567 |
} |
568 |
|
569 |
optional<int> |
570 |
AudioOutputDeviceCoreAudio::ParameterBuffers::RangeMinAsInt(std::map<String,String> Parameters) { |
571 |
return 2; |
572 |
} |
573 |
|
574 |
optional<int> |
575 |
AudioOutputDeviceCoreAudio::ParameterBuffers::RangeMaxAsInt(std::map<String,String> Parameters) { |
576 |
return 16; |
577 |
} |
578 |
|
579 |
std::vector<int> |
580 |
AudioOutputDeviceCoreAudio::ParameterBuffers::PossibilitiesAsInt(std::map<String,String> Parameters) { |
581 |
return std::vector<int>(); |
582 |
} |
583 |
|
584 |
void AudioOutputDeviceCoreAudio::ParameterBuffers::OnSetValue(int i) throw (Exception) { |
585 |
// not posssible, as parameter is fix |
586 |
} |
587 |
|
588 |
String AudioOutputDeviceCoreAudio::ParameterBuffers::Name() { |
589 |
return "BUFFERS"; |
590 |
} |
591 |
|
592 |
// *************** ParameterBufferSize *************** |
593 |
// * |
594 |
|
595 |
AudioOutputDeviceCoreAudio::ParameterBufferSize::ParameterBufferSize() : DeviceCreationParameterInt() { |
596 |
InitWithDefault(); |
597 |
} |
598 |
|
599 |
AudioOutputDeviceCoreAudio::ParameterBufferSize::ParameterBufferSize(String s) |
600 |
throw (Exception) : DeviceCreationParameterInt(s) { |
601 |
} |
602 |
|
603 |
String AudioOutputDeviceCoreAudio::ParameterBufferSize::Description() { |
604 |
return "Size of the audio buffer in sample frames"; |
605 |
} |
606 |
|
607 |
bool AudioOutputDeviceCoreAudio::ParameterBufferSize::Fix() { |
608 |
return true; |
609 |
} |
610 |
|
611 |
bool AudioOutputDeviceCoreAudio::ParameterBufferSize::Mandatory() { |
612 |
return false; |
613 |
} |
614 |
|
615 |
std::map<String,DeviceCreationParameter*> |
616 |
AudioOutputDeviceCoreAudio::ParameterBufferSize::DependsAsParameters() { |
617 |
return std::map<String,DeviceCreationParameter*>(); |
618 |
} |
619 |
|
620 |
optional<int> |
621 |
AudioOutputDeviceCoreAudio::ParameterBufferSize::DefaultAsInt(std::map<String,String> Parameters) { |
622 |
return 256; |
623 |
} |
624 |
|
625 |
optional<int> |
626 |
AudioOutputDeviceCoreAudio::ParameterBufferSize::RangeMinAsInt(std::map<String,String> Parameters) { |
627 |
return 32; |
628 |
} |
629 |
|
630 |
optional<int> |
631 |
AudioOutputDeviceCoreAudio::ParameterBufferSize::RangeMaxAsInt(std::map<String,String> Parameters) { |
632 |
return 4096; |
633 |
} |
634 |
|
635 |
std::vector<int> |
636 |
AudioOutputDeviceCoreAudio::ParameterBufferSize::PossibilitiesAsInt(std::map<String,String> Parameters) { |
637 |
return std::vector<int>(); |
638 |
} |
639 |
|
640 |
void AudioOutputDeviceCoreAudio::ParameterBufferSize::OnSetValue(int i) throw (Exception) { |
641 |
// not posssible, as parameter is fix |
642 |
} |
643 |
|
644 |
String AudioOutputDeviceCoreAudio::ParameterBufferSize::Name() { |
645 |
return "BUFFERSIZE"; |
646 |
} |
647 |
} // namespace LinuxSampler |