jamulus/mac/sound.cpp

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2012-01-28 12:51:14 +01:00
/******************************************************************************\
* Copyright (c) 2004-2011
*
* Author(s):
* Volker Fischer
*
******************************************************************************
*
* This program is free software; you can redistribute it and/or modify it under
* the terms of the GNU General Public License as published by the Free Software
* Foundation; either version 2 of the License, or (at your option) any later
* version.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
* FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
* details.
*
* You should have received a copy of the GNU General Public License along with
* this program; if not, write to the Free Software Foundation, Inc.,
* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
\******************************************************************************/
#include "sound.h"
/* Implementation *************************************************************/
CSound::CSound ( void (*fpNewProcessCallback) ( CVector<short>& psData, void* arg ), void* arg ) :
CSoundBase ( "CoreAudio", true, fpNewProcessCallback, arg )
{
// set up stream format
streamFormat.mSampleRate = SYSTEM_SAMPLE_RATE_HZ;
streamFormat.mFormatID = kAudioFormatLinearPCM;
streamFormat.mFormatFlags = kAudioFormatFlagIsSignedInteger;
streamFormat.mFramesPerPacket = 1;
streamFormat.mBytesPerFrame = 4;
streamFormat.mBytesPerPacket = 4;
streamFormat.mChannelsPerFrame = 2; // stereo
streamFormat.mBitsPerChannel = 16;
// set up a callback struct for new input data
inputCallbackStruct.inputProc = processInput;
inputCallbackStruct.inputProcRefCon = this;
// set up a callback struct for new output data
outputCallbackStruct.inputProc = processOutput;
outputCallbackStruct.inputProcRefCon = this;
// allocate memory for buffer struct
pBufferList = (AudioBufferList*) malloc ( offsetof ( AudioBufferList,
mBuffers[0] ) + sizeof ( AudioBuffer ) );
// open the default unit
ComponentDescription desc;
desc.componentType = kAudioUnitType_Output;
desc.componentSubType = kAudioUnitSubType_HALOutput;
desc.componentManufacturer = kAudioUnitManufacturer_Apple;
desc.componentFlags = 0;
desc.componentFlagsMask = 0;
Component comp = FindNextComponent ( NULL, &desc );
if ( comp == NULL )
{
throw CGenErr ( tr ( "No CoreAudio next component found" ) );
}
if ( OpenAComponent ( comp, &audioInputUnit ) )
{
throw CGenErr ( tr ( "CoreAudio creating input component instance failed" ) );
}
if ( OpenAComponent ( comp, &audioOutputUnit ) )
{
throw CGenErr ( tr ( "CoreAudio creating output component instance failed" ) );
}
// we enable input and disable output for input component
UInt32 enableIO = 1;
AudioUnitSetProperty ( audioInputUnit,
kAudioOutputUnitProperty_EnableIO,
kAudioUnitScope_Input,
1, // input element
&enableIO,
sizeof ( enableIO ) );
enableIO = 0;
AudioUnitSetProperty ( audioInputUnit,
kAudioOutputUnitProperty_EnableIO,
kAudioUnitScope_Output,
0, // output element
&enableIO,
sizeof ( enableIO ) );
// set up a callback function for new input data
if ( AudioUnitSetProperty ( audioInputUnit,
kAudioOutputUnitProperty_SetInputCallback,
kAudioUnitScope_Global,
0,
&inputCallbackStruct,
sizeof ( inputCallbackStruct ) ) )
{
throw CGenErr ( tr ( "CoreAudio audio unit set property failed" ) );
}
// set input stream format
if ( AudioUnitSetProperty ( audioInputUnit,
kAudioUnitProperty_StreamFormat,
kAudioUnitScope_Output,
1,
&streamFormat,
sizeof ( streamFormat ) ) )
{
throw CGenErr ( tr ( "CoreAudio stream format set property failed" ) );
}
// set up a callback function for new output data
if ( AudioUnitSetProperty ( audioOutputUnit,
kAudioUnitProperty_SetRenderCallback,
kAudioUnitScope_Global,
0,
&outputCallbackStruct,
sizeof ( outputCallbackStruct ) ) )
{
throw CGenErr ( tr ( "CoreAudio audio unit set property failed" ) );
}
// ste output stream format
if ( AudioUnitSetProperty ( audioOutputUnit,
kAudioUnitProperty_StreamFormat,
kAudioUnitScope_Input,
0,
&streamFormat,
sizeof ( streamFormat ) ) )
{
throw CGenErr ( tr ( "CoreAudio stream format set property failed" ) );
}
// Get available input/output devices --------------------------------------
UInt32 iPropertySize;
// first get property size of devices array and allocate memory
AudioHardwareGetPropertyInfo ( kAudioHardwarePropertyDevices,
&iPropertySize,
NULL );
AudioDeviceID* audioDevices = (AudioDeviceID*) malloc ( iPropertySize );
// now actually query all devices present in the system
AudioHardwareGetProperty ( kAudioHardwarePropertyDevices,
&iPropertySize,
audioDevices );
// calculate device count based on size of returned data array
const UInt32 deviceCount = ( iPropertySize / sizeof ( AudioDeviceID ) );
// always add system default devices for input and output as first entry
lNumDevs = 0;
strDriverNames[lNumDevs] = "System Default In/Out Devices";
iPropertySize = sizeof ( AudioDeviceID );
if ( AudioHardwareGetProperty ( kAudioHardwarePropertyDefaultInputDevice,
&iPropertySize,
&audioInputDevice[lNumDevs] ) )
{
throw CGenErr ( tr ( "CoreAudio input AudioHardwareGetProperty call failed. "
"It seems that no sound card is available in the system." ) );
}
iPropertySize = sizeof ( AudioDeviceID );
if ( AudioHardwareGetProperty ( kAudioHardwarePropertyDefaultOutputDevice,
&iPropertySize,
&audioOutputDevice[lNumDevs] ) )
{
throw CGenErr ( tr ( "CoreAudio output AudioHardwareGetProperty call failed. "
"It seems that no sound card is available in the system." ) );
}
lNumDevs++; // next device
// add detected devices (also check for maximum allowed sound cards!)
//
// we add combined entries for input and output for each device so that we
// do not need two combo boxes in the GUI for input and output (therefore
// all possible combinations are required)
for ( UInt32 i = 0; ( i < deviceCount ) && ( i < MAX_NUMBER_SOUND_CARDS - 1 ); i++ )
{
for ( UInt32 j = 0; ( j < deviceCount ) && ( j < MAX_NUMBER_SOUND_CARDS - 1 ); j++ )
{
// get device infos for both current devices
QString strDeviceName_i;
QString strDeviceName_j;
bool bIsInput_i;
bool bIsInput_j;
bool bIsOutput_i;
bool bIsOutput_j;
GetAudioDeviceInfos ( audioDevices[i],
strDeviceName_i,
bIsInput_i,
bIsOutput_i );
GetAudioDeviceInfos ( audioDevices[j],
strDeviceName_j,
bIsInput_j,
bIsOutput_j );
// check if i device is input and j device is output
if ( bIsInput_i && bIsOutput_j )
{
strDriverNames[lNumDevs] = "in: " +
strDeviceName_i + "/out: " +
strDeviceName_j;
// store audio device IDs
audioInputDevice[lNumDevs] = audioDevices[i];
audioOutputDevice[lNumDevs] = audioDevices[j];
lNumDevs++; // next device
}
}
}
// init device index as not initialized (invalid)
lCurDev = INVALID_SNC_CARD_DEVICE;
}
void CSound::GetAudioDeviceInfos ( const AudioDeviceID DeviceID,
QString& strDeviceName,
bool& bIsInput,
bool& bIsOutput )
{
// get property name
UInt32 iPropertySize = sizeof ( CFStringRef );
CFStringRef sPropertyStringValue;
AudioDeviceGetProperty ( DeviceID,
0,
false,
kAudioObjectPropertyName,
&iPropertySize,
&sPropertyStringValue );
// convert CFString in c-string (quick hack!) and then in QString
char* sC_strPropValue =
(char*) malloc ( CFStringGetLength ( sPropertyStringValue ) + 1 );
CFStringGetCString ( sPropertyStringValue,
sC_strPropValue,
CFStringGetLength ( sPropertyStringValue ) + 1,
kCFStringEncodingISOLatin1 );
strDeviceName = sC_strPropValue;
// check if device is input or output or both (is that possible?)
// we do this by trying to set the current device for the audio unit
// with the parameter input and output and then we simply check the
// error/ok result
bIsInput = !AudioUnitSetProperty ( audioInputUnit,
kAudioOutputUnitProperty_CurrentDevice,
kAudioUnitScope_Global,
1,
&DeviceID,
sizeof ( AudioDeviceID ) );
bIsOutput = !AudioUnitSetProperty ( audioOutputUnit,
kAudioOutputUnitProperty_CurrentDevice,
kAudioUnitScope_Global,
0,
&DeviceID,
sizeof ( AudioDeviceID ) );
}
QString CSound::LoadAndInitializeDriver ( int iDriverIdx )
{
// set input device
if ( AudioUnitSetProperty ( audioInputUnit,
kAudioOutputUnitProperty_CurrentDevice,
kAudioUnitScope_Global,
1,
&audioInputDevice[iDriverIdx],
sizeof ( AudioDeviceID ) ) )
{
throw CGenErr ( tr ( "CoreAudio input AudioUnitSetProperty call failed" ) );
}
// set output device
if ( AudioUnitSetProperty ( audioOutputUnit,
kAudioOutputUnitProperty_CurrentDevice,
kAudioUnitScope_Global,
0,
&audioOutputDevice[iDriverIdx],
sizeof ( AudioDeviceID ) ) )
{
throw CGenErr ( tr ( "CoreAudio output AudioUnitSetProperty call failed" ) );
}
// check device capabilities if it fullfills our requirements
const QString strStat =
CheckDeviceCapabilities ( audioInputUnit, audioOutputUnit );
// check if device is capable
if ( strStat.isEmpty() )
{
// store ID of selected driver if initialization was successful
lCurDev = iDriverIdx;
// setup callback for xruns (only for input is enough)
AudioDeviceAddPropertyListener ( audioInputDevice[lCurDev],
0,
true,
kAudioDeviceProcessorOverload,
deviceNotification,
this );
}
return strStat;
}
QString CSound::CheckDeviceCapabilities ( ComponentInstance& NewAudioInputUnit,
ComponentInstance& NewAudioOutputUnit )
{
UInt32 size;
// check input device sample rate
size = sizeof ( Float64 );
Float64 inputSampleRate;
AudioUnitGetProperty ( NewAudioInputUnit,
kAudioUnitProperty_SampleRate,
kAudioUnitScope_Input,
1,
&inputSampleRate,
&size );
if ( static_cast<int> ( inputSampleRate ) != SYSTEM_SAMPLE_RATE_HZ )
{
return QString ( tr ( "Current system audio input device sample "
"rate of %1 Hz is not supported. Please open the Audio-MIDI-Setup in "
"Applications->Utilities and try to set a sample rate of %2 Hz." ) ).arg (
static_cast<int> ( inputSampleRate ) ).arg ( SYSTEM_SAMPLE_RATE_HZ );
}
// check output device sample rate
size = sizeof ( Float64 );
Float64 outputSampleRate;
AudioUnitGetProperty ( NewAudioOutputUnit,
kAudioUnitProperty_SampleRate,
kAudioUnitScope_Output,
0,
&outputSampleRate,
&size );
if ( static_cast<int> ( outputSampleRate ) != SYSTEM_SAMPLE_RATE_HZ )
{
return QString ( tr ( "Current system audio output device sample "
"rate of %1 Hz is not supported. Please open the Audio-MIDI-Setup in "
"Applications->Utilities and try to set a sample rate of %2 Hz." ) ).arg (
static_cast<int> ( outputSampleRate ) ).arg ( SYSTEM_SAMPLE_RATE_HZ );
}
// everything is ok, return empty string for "no error" case
return "";
}
void CSound::CloseCoreAudio()
{
// clean up
AudioUnitUninitialize ( audioInputUnit );
AudioUnitUninitialize ( audioOutputUnit );
CloseComponent ( audioInputUnit );
CloseComponent ( audioOutputUnit );
}
void CSound::Start()
{
// start the rendering
AudioOutputUnitStart ( audioInputUnit );
AudioOutputUnitStart ( audioOutputUnit );
// call base class
CSoundBase::Start();
}
void CSound::Stop()
{
// stop the audio stream
AudioOutputUnitStop ( audioInputUnit );
AudioOutputUnitStop ( audioOutputUnit );
// call base class
CSoundBase::Stop();
}
int CSound::Init ( const int iNewPrefMonoBufferSize )
{
UInt32 iActualMonoBufferSize;
// Error message string: in case buffer sizes on input and output cannot be
// set to the same value
const QString strErrBufSize = tr ( "The buffer sizes of the current "
"input and output audio device cannot be set to a common value. Please "
"choose other input/output audio devices in your system settings." );
// try to set input buffer size
iActualMonoBufferSize =
SetBufferSize ( audioInputDevice[lCurDev], true, iNewPrefMonoBufferSize );
if ( iActualMonoBufferSize != static_cast<UInt32> ( iNewPrefMonoBufferSize ) )
{
// try to set the input buffer size to the output so that we
// have a matching pair
if ( SetBufferSize ( audioOutputDevice[lCurDev], false, iActualMonoBufferSize ) !=
iActualMonoBufferSize )
{
throw CGenErr ( strErrBufSize );
}
}
else
{
// try to set output buffer size
if ( SetBufferSize ( audioOutputDevice[lCurDev], false, iNewPrefMonoBufferSize ) !=
static_cast<UInt32> ( iNewPrefMonoBufferSize ) )
{
throw CGenErr ( strErrBufSize );
}
}
// store buffer size
iCoreAudioBufferSizeMono = iActualMonoBufferSize;
// init base class
CSoundBase::Init ( iCoreAudioBufferSizeMono );
// set internal buffer size value and calculate stereo buffer size
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iCoreAudioBufferSizeStereo = 2 * iCoreAudioBufferSizeMono;
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// create memory for intermediate audio buffer
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vecsTmpAudioSndCrdStereo.Init ( iCoreAudioBufferSizeStereo );
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// fill audio unit buffer struct
pBufferList->mNumberBuffers = 1;
pBufferList->mBuffers[0].mNumberChannels = 2; // stereo
pBufferList->mBuffers[0].mDataByteSize = iCoreAudioBufferSizeMono * 4; // 2 bytes, 2 channels
pBufferList->mBuffers[0].mData = &vecsTmpAudioSndCrdStereo[0];
// initialize units
if ( AudioUnitInitialize ( audioInputUnit ) )
{
throw CGenErr ( tr ( "Initialization of CoreAudio failed" ) );
}
if ( AudioUnitInitialize ( audioOutputUnit ) )
{
throw CGenErr ( tr ( "Initialization of CoreAudio failed" ) );
}
return iCoreAudioBufferSizeMono;
}
UInt32 CSound::SetBufferSize ( AudioDeviceID& audioDeviceID,
const bool bIsInput,
UInt32 iPrefBufferSize )
{
// first set the value
UInt32 iSizeBufValue = sizeof ( UInt32 );
AudioDeviceSetProperty ( audioDeviceID,
NULL,
0,
bIsInput,
kAudioDevicePropertyBufferFrameSize,
iSizeBufValue,
&iPrefBufferSize );
// read back which value is actually used
UInt32 iActualMonoBufferSize;
AudioDeviceGetProperty ( audioDeviceID,
0,
bIsInput,
kAudioDevicePropertyBufferFrameSize,
&iSizeBufValue,
&iActualMonoBufferSize );
return iActualMonoBufferSize;
}
OSStatus CSound::deviceNotification ( AudioDeviceID,
UInt32,
Boolean,
AudioDevicePropertyID inPropertyID,
void* inRefCon )
{
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CSound* pSound = static_cast<CSound*> ( inRefCon );
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if ( inPropertyID == kAudioDeviceProcessorOverload )
{
// xrun handling (it is important to act on xruns under CoreAudio
// since it seems that the xrun situation stays stable for a
// while and would give you a long time bad audio
pSound->EmitReinitRequestSignal ( RS_ONLY_RESTART );
}
return noErr;
}
OSStatus CSound::processInput ( void* inRefCon,
AudioUnitRenderActionFlags* ioActionFlags,
const AudioTimeStamp* inTimeStamp,
UInt32 inBusNumber,
UInt32 inNumberFrames,
AudioBufferList* )
{
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CSound* pSound = static_cast<CSound*> ( inRefCon );
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QMutexLocker locker ( &pSound->Mutex );
// get the new audio data
AudioUnitRender ( pSound->audioInputUnit,
ioActionFlags,
inTimeStamp,
inBusNumber,
inNumberFrames,
pSound->pBufferList );
// call processing callback function
pSound->ProcessCallback ( pSound->vecsTmpAudioSndCrdStereo );
return noErr;
}
OSStatus CSound::processOutput ( void* inRefCon,
AudioUnitRenderActionFlags*,
const AudioTimeStamp*,
UInt32,
UInt32,
AudioBufferList* ioData )
{
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CSound* pSound = static_cast<CSound*> ( inRefCon );
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QMutexLocker locker ( &pSound->Mutex );
memcpy ( ioData->mBuffers[0].mData,
&pSound->vecsTmpAudioSndCrdStereo[0],
pSound->pBufferList->mBuffers[0].mDataByteSize);
return noErr;
}