588 lines
23 KiB
C++
Executable File
588 lines
23 KiB
C++
Executable File
/******************************************************************************\
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* Copyright (c) 2004-2015
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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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CSound::CSound ( void (*fpNewProcessCallback) ( CVector<short>& psData, void* arg ), void* arg ) :
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CSoundBase ( "CoreAudio", true, fpNewProcessCallback, arg )
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{
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// Apple Mailing Lists: Subject: GUI Apps should set kAudioHardwarePropertyRunLoop
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// in the HAL, From: Jeff Moore, Date: Fri, 6 Dec 2002
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// Most GUI applciations have several threads on which they receive
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// notifications already, so the having the HAL's thread around is wasteful.
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// Here is what you should do: On the thread you want the HAL to use for
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// notifications (for most apps, this will be the main thread), add the
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// following lines of code:
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// tell the HAL to use the current thread as it's run loop
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CFRunLoopRef theRunLoop = CFRunLoopGetCurrent();
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AudioObjectPropertyAddress property = { kAudioHardwarePropertyRunLoop,
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kAudioObjectPropertyScopeGlobal,
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kAudioObjectPropertyElementMaster };
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AudioObjectSetPropertyData ( kAudioObjectSystemObject,
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&property,
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0,
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NULL,
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sizeof ( CFRunLoopRef ),
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&theRunLoop );
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// Get available input/output devices --------------------------------------
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UInt32 iPropertySize;
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AudioObjectPropertyAddress stPropertyAddress;
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stPropertyAddress.mScope = kAudioObjectPropertyScopeGlobal;
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stPropertyAddress.mElement = kAudioObjectPropertyElementMaster;
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// first get property size of devices array and allocate memory
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stPropertyAddress.mSelector = kAudioHardwarePropertyDevices;
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AudioObjectGetPropertyDataSize ( kAudioObjectSystemObject,
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&stPropertyAddress,
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0,
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NULL,
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&iPropertySize );
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AudioDeviceID* audioDevices = (AudioDeviceID*) malloc ( iPropertySize );
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// now actually query all devices present in the system
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AudioObjectGetPropertyData ( kAudioObjectSystemObject,
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&stPropertyAddress,
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0,
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NULL,
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&iPropertySize,
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audioDevices );
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// calculate device count based on size of returned data array
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const UInt32 deviceCount = iPropertySize / sizeof ( AudioDeviceID );
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// always add system default devices for input and output as first entry
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lNumDevs = 0;
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strDriverNames[lNumDevs] = "System Default In/Out Devices";
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iPropertySize = sizeof ( AudioDeviceID );
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stPropertyAddress.mSelector = kAudioHardwarePropertyDefaultInputDevice;
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if ( AudioObjectGetPropertyData ( kAudioObjectSystemObject,
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&stPropertyAddress,
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0,
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NULL,
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&iPropertySize,
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&audioInputDevice[lNumDevs] ) )
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{
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throw CGenErr ( tr ( "CoreAudio input AudioHardwareGetProperty call failed. "
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"It seems that no sound card is available in the system." ) );
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}
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iPropertySize = sizeof ( AudioDeviceID );
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stPropertyAddress.mSelector = kAudioHardwarePropertyDefaultOutputDevice;
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if ( AudioObjectGetPropertyData ( kAudioObjectSystemObject,
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&stPropertyAddress,
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0,
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NULL,
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&iPropertySize,
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&audioOutputDevice[lNumDevs] ) )
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{
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throw CGenErr ( tr ( "CoreAudio output AudioHardwareGetProperty call failed. "
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"It seems that no sound card is available in the system." ) );
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}
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lNumDevs++; // next device
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// add detected devices
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//
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// we add combined entries for input and output for each device so that we
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// do not need two combo boxes in the GUI for input and output (therefore
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// all possible combinations are required which can be a large number)
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for ( UInt32 i = 0; i < deviceCount; i++ )
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{
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for ( UInt32 j = 0; j < deviceCount; j++ )
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{
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// get device infos for both current devices
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QString strDeviceName_i;
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QString strDeviceName_j;
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bool bIsInput_i;
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bool bIsInput_j;
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bool bIsOutput_i;
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bool bIsOutput_j;
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GetAudioDeviceInfos ( audioDevices[i],
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strDeviceName_i,
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bIsInput_i,
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bIsOutput_i );
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GetAudioDeviceInfos ( audioDevices[j],
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strDeviceName_j,
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bIsInput_j,
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bIsOutput_j );
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// check if i device is input and j device is output and that we are
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// in range
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if ( bIsInput_i && bIsOutput_j && ( lNumDevs < MAX_NUMBER_SOUND_CARDS ) )
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{
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strDriverNames[lNumDevs] = "in: " +
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strDeviceName_i + "/out: " +
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strDeviceName_j;
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// store audio device IDs
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audioInputDevice[lNumDevs] = audioDevices[i];
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audioOutputDevice[lNumDevs] = audioDevices[j];
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lNumDevs++; // next device
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}
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}
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}
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free ( audioDevices );
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// init device index as not initialized (invalid)
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lCurDev = INVALID_SNC_CARD_DEVICE;
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CurrentAudioInputDeviceID = 0;
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}
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void CSound::GetAudioDeviceInfos ( const AudioDeviceID DeviceID,
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QString& strDeviceName,
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bool& bIsInput,
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bool& bIsOutput )
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{
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UInt32 iPropertySize;
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AudioObjectPropertyAddress stPropertyAddress;
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// init return values
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strDeviceName = "UNKNOWN"; // init value in case no name is available
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bIsInput = false;
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bIsOutput = false;
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// check if device is input or output or both (is that possible?)
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stPropertyAddress.mSelector = kAudioDevicePropertyStreams;
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stPropertyAddress.mElement = kAudioObjectPropertyElementMaster;
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// input check
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stPropertyAddress.mScope = kAudioDevicePropertyScopeInput;
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AudioObjectGetPropertyDataSize ( DeviceID,
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&stPropertyAddress,
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0,
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NULL,
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&iPropertySize );
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bIsInput = ( iPropertySize > 0 ); // check if any input streams are available
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// output check
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stPropertyAddress.mScope = kAudioDevicePropertyScopeOutput;
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AudioObjectGetPropertyDataSize ( DeviceID,
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&stPropertyAddress,
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0,
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NULL,
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&iPropertySize );
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bIsOutput = ( iPropertySize > 0 ); // check if any output streams are available
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// get property name
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CFStringRef sPropertyStringValue;
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stPropertyAddress.mSelector = kAudioObjectPropertyName;
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stPropertyAddress.mScope = kAudioObjectPropertyScopeGlobal;
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iPropertySize = sizeof ( CFStringRef );
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AudioObjectGetPropertyData ( DeviceID,
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&stPropertyAddress,
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0,
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NULL,
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&iPropertySize,
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&sPropertyStringValue );
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// first check if the string is not empty
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if ( CFStringGetLength ( sPropertyStringValue ) > 0 )
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{
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// convert CFString in c-string (quick hack!) and then in QString
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char* sC_strPropValue =
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(char*) malloc ( CFStringGetLength ( sPropertyStringValue ) + 1 );
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if ( CFStringGetCString ( sPropertyStringValue,
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sC_strPropValue,
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CFStringGetLength ( sPropertyStringValue ) + 1,
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kCFStringEncodingISOLatin1 ) )
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{
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strDeviceName = sC_strPropValue;
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}
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free ( sC_strPropValue );
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}
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}
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QString CSound::LoadAndInitializeDriver ( int iDriverIdx )
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{
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// check device capabilities if it fullfills our requirements
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const QString strStat = CheckDeviceCapabilities ( iDriverIdx );
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// check if device is capable
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if ( strStat.isEmpty() )
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{
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// store ID of selected driver if initialization was successful
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lCurDev = iDriverIdx;
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CurrentAudioInputDeviceID = audioInputDevice[iDriverIdx];
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}
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return strStat;
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}
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QString CSound::CheckDeviceCapabilities ( const int iDriverIdx )
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{
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UInt32 iPropertySize;
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Float64 inputSampleRate;
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AudioStreamBasicDescription CurDevStreamFormat;
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const Float64 fSystemSampleRate = static_cast<Float64> ( SYSTEM_SAMPLE_RATE_HZ );
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AudioObjectPropertyAddress stPropertyAddress;
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stPropertyAddress.mScope = kAudioObjectPropertyScopeGlobal;
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stPropertyAddress.mElement = kAudioObjectPropertyElementMaster;
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// check input device sample rate
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stPropertyAddress.mSelector = kAudioDevicePropertyNominalSampleRate;
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iPropertySize = sizeof ( Float64 );
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AudioObjectGetPropertyData ( audioInputDevice[iDriverIdx],
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&stPropertyAddress,
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0,
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NULL,
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&iPropertySize,
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&inputSampleRate );
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if ( inputSampleRate != fSystemSampleRate )
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{
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// try to change the sample rate
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if ( AudioObjectSetPropertyData ( audioInputDevice[iDriverIdx],
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&stPropertyAddress,
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0,
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NULL,
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sizeof ( Float64 ),
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&fSystemSampleRate ) != noErr )
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{
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return 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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}
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// check output device sample rate
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iPropertySize = sizeof ( Float64 );
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Float64 outputSampleRate;
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AudioObjectGetPropertyData ( audioOutputDevice[iDriverIdx],
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&stPropertyAddress,
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0,
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NULL,
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&iPropertySize,
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&outputSampleRate );
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if ( outputSampleRate != fSystemSampleRate )
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{
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// try to change the sample rate
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if ( AudioObjectSetPropertyData ( audioOutputDevice[iDriverIdx],
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&stPropertyAddress,
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0,
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NULL,
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sizeof ( Float64 ),
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&fSystemSampleRate ) != noErr )
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{
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return 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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}
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// According to the AudioHardware documentation: "If the format is a linear PCM
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// format, the data will always be presented as 32 bit, native endian floating
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// point. All conversions to and from the true physical format of the hardware
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// is handled by the devices driver."
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// So we check for the fixed values here.
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iPropertySize = sizeof ( AudioStreamBasicDescription );
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stPropertyAddress.mSelector = kAudioStreamPropertyVirtualFormat;
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AudioObjectGetPropertyData ( audioOutputDevice[iDriverIdx],
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&stPropertyAddress,
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0,
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NULL,
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&iPropertySize,
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&CurDevStreamFormat );
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if ( ( CurDevStreamFormat.mFormatID != kAudioFormatLinearPCM ) ||
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( CurDevStreamFormat.mFramesPerPacket != 1 ) ||
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( CurDevStreamFormat.mBytesPerFrame != 8 ) ||
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( CurDevStreamFormat.mBytesPerPacket != 8 ) ||
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( CurDevStreamFormat.mChannelsPerFrame != 2 ) ||
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( CurDevStreamFormat.mBitsPerChannel != 32 ) )
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{
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return QString ( tr ( "The audio stream format for this audio device is "
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"not compatible with the requirements. Maybe the "
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"number of channels is incompatible, e.g., if the "
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"device only is mono." ) );
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}
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// TODO mSampleRate, mFormatFlags = kAudioFormatFlagIsSignedInteger
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// TODO check input device, too!
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qDebug() << "mBitsPerChannel" << CurDevStreamFormat.mBitsPerChannel;
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qDebug() << "mBytesPerFrame" << CurDevStreamFormat.mBytesPerFrame;
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qDebug() << "mBytesPerPacket" << CurDevStreamFormat.mBytesPerPacket;
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qDebug() << "mChannelsPerFrame" << CurDevStreamFormat.mChannelsPerFrame;
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qDebug() << "mFramesPerPacket" << CurDevStreamFormat.mFramesPerPacket;
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qDebug() << "mSampleRate" << CurDevStreamFormat.mSampleRate;
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// everything is ok, return empty string for "no error" case
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return "";
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}
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void CSound::Start()
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{
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// setup callback for xruns (only for input is enough)
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AudioObjectPropertyAddress stPropertyAddress;
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stPropertyAddress.mSelector = kAudioDeviceProcessorOverload;
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stPropertyAddress.mElement = kAudioObjectPropertyElementMaster;
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stPropertyAddress.mScope = kAudioObjectPropertyScopeGlobal;
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AudioObjectAddPropertyListener ( audioInputDevice[lCurDev],
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&stPropertyAddress,
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deviceNotification,
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this );
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// register the callback function for input and output
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AudioDeviceCreateIOProcID ( audioInputDevice[lCurDev],
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callbackIO,
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this,
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&audioInputProcID );
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AudioDeviceCreateIOProcID ( audioOutputDevice[lCurDev],
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callbackIO,
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this,
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&audioOutputProcID );
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// start the audio stream
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AudioDeviceStart ( audioInputDevice[lCurDev], audioInputProcID );
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AudioDeviceStart ( audioOutputDevice[lCurDev], audioOutputProcID );
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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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AudioDeviceStop ( audioInputDevice[lCurDev], audioInputProcID );
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AudioDeviceStop ( audioOutputDevice[lCurDev], audioOutputProcID );
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// unregister the callback function for input and output
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AudioDeviceDestroyIOProcID ( audioInputDevice[lCurDev], audioInputProcID );
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AudioDeviceDestroyIOProcID ( audioOutputDevice[lCurDev], audioOutputProcID );
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// unregister the callback function for xruns
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AudioObjectPropertyAddress stPropertyAddress;
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stPropertyAddress.mSelector = kAudioDeviceProcessorOverload;
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stPropertyAddress.mElement = kAudioObjectPropertyElementMaster;
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stPropertyAddress.mScope = kAudioObjectPropertyScopeGlobal;
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AudioObjectRemovePropertyListener( audioInputDevice[lCurDev],
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&stPropertyAddress,
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deviceNotification,
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this );
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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
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// 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[lCurDev], 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[lCurDev], 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[lCurDev], 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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iCoreAudioBufferSizeStereo = 2 * iCoreAudioBufferSizeMono;
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// create memory for intermediate audio buffer
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vecsTmpAudioSndCrdStereo.Init ( iCoreAudioBufferSizeStereo );
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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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AudioObjectPropertyAddress stPropertyAddress;
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stPropertyAddress.mSelector = kAudioDevicePropertyBufferFrameSize;
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if ( bIsInput )
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{
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stPropertyAddress.mScope = kAudioDevicePropertyScopeInput;
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}
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else
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{
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stPropertyAddress.mScope = kAudioDevicePropertyScopeOutput;
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}
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stPropertyAddress.mElement = kAudioObjectPropertyElementMaster;
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// first set the value
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UInt32 iSizeBufValue = sizeof ( UInt32 );
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AudioObjectSetPropertyData ( audioDeviceID,
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&stPropertyAddress,
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0,
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NULL,
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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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AudioObjectGetPropertyData ( audioDeviceID,
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&stPropertyAddress,
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0,
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NULL,
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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::deviceNotification ( AudioDeviceID,
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UInt32,
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const AudioObjectPropertyAddress* /* inAddresses */,
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void* /* inRefCon */ )
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{
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// TODO: Do we need this anymore? If not, we can completely remove this function...
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/*
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CSound* pSound = static_cast<CSound*> ( inRefCon );
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if ( inAddresses->mSelector == kAudioDeviceProcessorOverload )
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{
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// xrun handling (it is important to act on xruns under CoreAudio
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// since it seems that the xrun situation stays stable for a
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// while and would give you a long time bad audio)
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pSound->EmitReinitRequestSignal ( RS_ONLY_RESTART );
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}
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*/
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return noErr;
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}
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OSStatus CSound::callbackIO ( AudioDeviceID inDevice,
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const AudioTimeStamp*,
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const AudioBufferList* inInputData,
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const AudioTimeStamp*,
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AudioBufferList* outOutputData,
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const AudioTimeStamp*,
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void* inRefCon )
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{
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CSound* pSound = static_cast<CSound*> ( inRefCon );
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// both, the input and output device use the same callback function
|
|
QMutexLocker locker ( &pSound->Mutex );
|
|
|
|
if ( inDevice == pSound->CurrentAudioInputDeviceID )
|
|
{
|
|
// check size (float32 has four bytes)
|
|
if ( inInputData->mBuffers[0].mDataByteSize ==
|
|
static_cast<UInt32> ( pSound->iCoreAudioBufferSizeStereo * 4 ) )
|
|
{
|
|
// get a pointer to the input data of the correct type
|
|
Float32* pInData = static_cast<Float32*> ( inInputData->mBuffers[0].mData );
|
|
|
|
// copy input data
|
|
for ( int i = 0; i < pSound->iCoreAudioBufferSizeStereo; i++ )
|
|
{
|
|
pSound->vecsTmpAudioSndCrdStereo[i] =
|
|
(short) ( pInData[i] * _MAXSHORT );
|
|
}
|
|
|
|
// call processing callback function
|
|
pSound->ProcessCallback ( pSound->vecsTmpAudioSndCrdStereo );
|
|
}
|
|
}
|
|
else
|
|
{
|
|
// check size (float32 has four bytes)
|
|
if ( outOutputData->mBuffers[0].mDataByteSize ==
|
|
static_cast<UInt32> ( pSound->iCoreAudioBufferSizeStereo * 4 ) )
|
|
{
|
|
// get a pointer to the input data of the correct type
|
|
Float32* pOutData = static_cast<Float32*> ( outOutputData->mBuffers[0].mData );
|
|
|
|
// copy output data
|
|
for ( int i = 0; i < pSound->iCoreAudioBufferSizeStereo; i++ )
|
|
{
|
|
pOutData[i] = (Float32)
|
|
pSound->vecsTmpAudioSndCrdStereo[i] / _MAXSHORT;
|
|
}
|
|
}
|
|
}
|
|
|
|
return kAudioHardwareNoError;
|
|
}
|