379 lines
14 KiB
C++
Executable File
379 lines
14 KiB
C++
Executable File
/******************************************************************************\
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* Copyright (c) 2004-2011
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*
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* Author(s):
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* Volker Fischer
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*
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******************************************************************************
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*
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* This program is free software; you can redistribute it and/or modify it under
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* the terms of the GNU General Public License as published by the Free Software
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* Foundation; either version 2 of the License, or (at your option) any later
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* version.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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* FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
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* details.
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*
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* You should have received a copy of the GNU General Public License along with
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* this program; if not, write to the Free Software Foundation, Inc.,
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* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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\******************************************************************************/
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#include "sound.h"
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/* Implementation *************************************************************/
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void CSound::OpenCoreAudio()
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{
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UInt32 size;
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ComponentResult err;
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// open the default unit
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ComponentDescription desc;
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desc.componentType = kAudioUnitType_Output;
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desc.componentSubType = kAudioUnitSubType_HALOutput;
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desc.componentManufacturer = kAudioUnitManufacturer_Apple;
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desc.componentFlags = 0;
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desc.componentFlagsMask = 0;
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Component comp = FindNextComponent ( NULL, &desc );
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if ( comp == NULL )
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{
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throw CGenErr ( tr ( "No CoreAudio next component found" ) );
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}
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if ( OpenAComponent ( comp, &audioInputUnit ) )
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{
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throw CGenErr ( tr ( "CoreAudio creating input component instance failed" ) );
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}
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if ( OpenAComponent ( comp, &audioOutputUnit ) )
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{
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throw CGenErr ( tr ( "CoreAudio creating output component instance failed" ) );
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}
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// we enable input and disable output for input component
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UInt32 enableIO = 1;
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err = AudioUnitSetProperty ( audioInputUnit,
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kAudioOutputUnitProperty_EnableIO,
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kAudioUnitScope_Input,
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1, // input element
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&enableIO,
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sizeof ( enableIO ) );
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enableIO = 0;
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err = AudioUnitSetProperty ( audioInputUnit,
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kAudioOutputUnitProperty_EnableIO,
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kAudioUnitScope_Output,
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0, // output element
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&enableIO,
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sizeof ( enableIO ) );
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// set input device
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size = sizeof ( AudioDeviceID );
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if ( AudioHardwareGetProperty ( kAudioHardwarePropertyDefaultInputDevice,
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&size,
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&audioInputDevice ) )
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{
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throw CGenErr ( tr ( "CoreAudio input AudioHardwareGetProperty call failed" ) );
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}
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if ( AudioUnitSetProperty ( audioInputUnit,
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kAudioOutputUnitProperty_CurrentDevice,
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kAudioUnitScope_Global,
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1,
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&audioInputDevice,
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sizeof ( audioInputDevice ) ) )
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{
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throw CGenErr ( tr ( "CoreAudio input AudioUnitSetProperty call failed" ) );
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}
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// set up a callback function for new input data
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AURenderCallbackStruct input;
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input.inputProc = processInput;
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input.inputProcRefCon = this;
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if ( AudioUnitSetProperty ( audioInputUnit,
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kAudioOutputUnitProperty_SetInputCallback,
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kAudioUnitScope_Global,
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0,
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&input,
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sizeof ( input ) ) )
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{
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throw CGenErr ( tr ( "CoreAudio audio unit set property failed" ) );
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}
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// set output device
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size = sizeof ( AudioDeviceID );
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if ( AudioHardwareGetProperty ( kAudioHardwarePropertyDefaultOutputDevice,
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&size,
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&audioOutputDevice ) )
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{
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throw CGenErr ( tr ( "CoreAudio output AudioHardwareGetProperty call failed" ) );
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}
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if ( AudioUnitSetProperty ( audioOutputUnit,
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kAudioOutputUnitProperty_CurrentDevice,
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kAudioUnitScope_Global,
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0,
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&audioOutputDevice,
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sizeof ( audioOutputDevice ) ) )
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{
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throw CGenErr ( tr ( "CoreAudio output AudioUnitSetProperty call failed" ) );
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}
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// set up a callback function for new output data
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AURenderCallbackStruct output;
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output.inputProc = processOutput;
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output.inputProcRefCon = this;
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if ( AudioUnitSetProperty ( audioOutputUnit,
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kAudioUnitProperty_SetRenderCallback,
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kAudioUnitScope_Global,
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0,
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&output,
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sizeof ( output ) ) )
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{
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throw CGenErr ( tr ( "CoreAudio audio unit set property failed" ) );
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}
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// set up stream format
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AudioStreamBasicDescription streamFormat;
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streamFormat.mSampleRate = SYSTEM_SAMPLE_RATE_HZ;
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streamFormat.mFormatID = kAudioFormatLinearPCM;
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streamFormat.mFormatFlags = kAudioFormatFlagIsSignedInteger;
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streamFormat.mFramesPerPacket = 1;
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streamFormat.mBytesPerFrame = 4;
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streamFormat.mBytesPerPacket = 4;
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streamFormat.mChannelsPerFrame = 2; // stereo
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streamFormat.mBitsPerChannel = 16;
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// our output
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if ( AudioUnitSetProperty ( audioOutputUnit,
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kAudioUnitProperty_StreamFormat,
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kAudioUnitScope_Input,
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0,
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&streamFormat,
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sizeof(streamFormat) ) )
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{
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throw CGenErr ( tr ( "CoreAudio stream format set property failed" ) );
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}
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// our input
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if ( AudioUnitSetProperty ( audioInputUnit,
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kAudioUnitProperty_StreamFormat,
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kAudioUnitScope_Output,
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1,
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&streamFormat,
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sizeof(streamFormat) ) )
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{
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throw CGenErr ( tr ( "CoreAudio stream format set property failed" ) );
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}
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// check input device sample rate
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size = sizeof ( Float64 );
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Float64 inputSampleRate;
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AudioUnitGetProperty ( audioInputUnit,
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kAudioUnitProperty_SampleRate,
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kAudioUnitScope_Input,
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1,
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&inputSampleRate,
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&size );
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if ( static_cast<int> ( inputSampleRate ) != SYSTEM_SAMPLE_RATE_HZ )
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{
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throw CGenErr ( QString ( tr ( "Current system audio input device sample "
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"rate of %1 Hz is not supported. Please open the Audio-MIDI-Setup in "
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"Applications->Utilities and try to set a sample rate of %2 Hz." ) ).arg (
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static_cast<int> ( inputSampleRate ) ).arg ( SYSTEM_SAMPLE_RATE_HZ ) );
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}
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// check output device sample rate
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size = sizeof ( Float64 );
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Float64 outputSampleRate;
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AudioUnitGetProperty ( audioOutputUnit,
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kAudioUnitProperty_SampleRate,
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kAudioUnitScope_Output,
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0,
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&outputSampleRate,
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&size );
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if ( static_cast<int> ( outputSampleRate ) != SYSTEM_SAMPLE_RATE_HZ )
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{
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throw CGenErr ( QString ( tr ( "Current system audio output device sample "
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"rate of %1 Hz is not supported. Please open the Audio-MIDI-Setup in "
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"Applications->Utilities and try to set a sample rate of %2 Hz." ) ).arg (
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static_cast<int> ( outputSampleRate ) ).arg ( SYSTEM_SAMPLE_RATE_HZ ) );
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}
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// allocate memory for buffer struct
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pBufferList = (AudioBufferList*) malloc ( offsetof ( AudioBufferList,
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mBuffers[0] ) + sizeof ( AudioBuffer ) );
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}
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void CSound::CloseCoreAudio()
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{
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// clean up "gOutputUnit"
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AudioUnitUninitialize ( audioInputUnit );
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AudioUnitUninitialize ( audioOutputUnit );
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CloseComponent ( audioInputUnit );
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CloseComponent ( audioOutputUnit );
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}
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void CSound::Start()
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{
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// start the rendering
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AudioOutputUnitStart ( audioInputUnit );
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AudioOutputUnitStart ( audioOutputUnit );
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// call base class
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CSoundBase::Start();
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}
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void CSound::Stop()
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{
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// stop the audio stream
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AudioOutputUnitStop ( audioInputUnit );
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AudioOutputUnitStop ( audioOutputUnit );
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// call base class
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CSoundBase::Stop();
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}
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int CSound::Init ( const int iNewPrefMonoBufferSize )
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{
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UInt32 iActualMonoBufferSize;
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// Error message string: in case buffer sizes on input and output cannot be set to the same value
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const QString strErrBufSize = tr ( "The buffer sizes of the current "
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"input and output audio device cannot be set to a common value. Please "
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"choose other input/output audio devices in your system settings." );
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// try to set input buffer size
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iActualMonoBufferSize =
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SetBufferSize ( audioInputDevice, true, iNewPrefMonoBufferSize );
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if ( iActualMonoBufferSize != static_cast<UInt32> ( iNewPrefMonoBufferSize ) )
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{
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// try to set the input buffer size to the output so that we
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// have a matching pair
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if ( SetBufferSize ( audioOutputDevice, false, iActualMonoBufferSize ) !=
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iActualMonoBufferSize )
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{
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throw CGenErr ( strErrBufSize );
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}
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}
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else
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{
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// try to set output buffer size
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if ( SetBufferSize ( audioOutputDevice, false, iNewPrefMonoBufferSize ) !=
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static_cast<UInt32> ( iNewPrefMonoBufferSize ) )
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{
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throw CGenErr ( strErrBufSize );
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}
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}
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// store buffer size
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iCoreAudioBufferSizeMono = iActualMonoBufferSize;
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// init base class
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CSoundBase::Init ( iCoreAudioBufferSizeMono );
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// set internal buffer size value and calculate stereo buffer size
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iCoreAudioBufferSizeStero = 2 * iCoreAudioBufferSizeMono;
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// create memory for intermediate audio buffer
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vecsTmpAudioSndCrdStereo.Init ( iCoreAudioBufferSizeStero );
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// fill audio unit buffer struct
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pBufferList->mNumberBuffers = 1;
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pBufferList->mBuffers[0].mNumberChannels = 2; // stereo
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pBufferList->mBuffers[0].mDataByteSize = iCoreAudioBufferSizeMono * 4; // 2 bytes, 2 channels
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pBufferList->mBuffers[0].mData = &vecsTmpAudioSndCrdStereo[0];
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// initialize unit
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if ( AudioUnitInitialize ( audioInputUnit ) )
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{
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throw CGenErr ( tr ( "Initialization of CoreAudio failed" ) );
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}
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if ( AudioUnitInitialize ( audioOutputUnit ) )
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{
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throw CGenErr ( tr ( "Initialization of CoreAudio failed" ) );
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}
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return iCoreAudioBufferSizeMono;
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}
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UInt32 CSound::SetBufferSize ( AudioDeviceID& audioDeviceID,
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const bool bIsInput,
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UInt32 iPrefBufferSize )
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{
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// first set the value
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UInt32 iSizeBufValue = sizeof ( UInt32 );
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AudioDeviceSetProperty ( audioDeviceID,
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NULL,
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0,
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bIsInput,
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kAudioDevicePropertyBufferFrameSize,
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iSizeBufValue,
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&iPrefBufferSize );
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// read back which value is actually used
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UInt32 iActualMonoBufferSize;
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AudioDeviceGetProperty ( audioDeviceID,
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0,
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bIsInput,
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kAudioDevicePropertyBufferFrameSize,
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&iSizeBufValue,
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&iActualMonoBufferSize );
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return iActualMonoBufferSize;
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}
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OSStatus CSound::processInput ( 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* )
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{
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CSound* pSound = reinterpret_cast<CSound*> ( inRefCon );
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QMutexLocker locker ( &pSound->Mutex );
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// get the new audio data
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AudioUnitRender ( pSound->audioInputUnit,
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ioActionFlags,
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inTimeStamp,
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inBusNumber,
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inNumberFrames,
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pSound->pBufferList );
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// call processing callback function
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pSound->ProcessCallback ( pSound->vecsTmpAudioSndCrdStereo );
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return noErr;
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}
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OSStatus CSound::processOutput ( void* inRefCon,
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AudioUnitRenderActionFlags*,
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const AudioTimeStamp*,
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UInt32,
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UInt32,
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AudioBufferList* ioData )
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{
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CSound* pSound = reinterpret_cast<CSound*> ( inRefCon );
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QMutexLocker locker ( &pSound->Mutex );
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memcpy ( ioData->mBuffers[0].mData,
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&pSound->vecsTmpAudioSndCrdStereo[0],
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pSound->pBufferList->mBuffers[0].mDataByteSize);
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return noErr;
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}
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