111 lines
3.2 KiB
C++
Executable File
111 lines
3.2 KiB
C++
Executable File
/******************************************************************************\
|
|
* Copyright (c) 2004-2010
|
|
*
|
|
* 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 "soundbase.h"
|
|
|
|
|
|
/* Implementation *************************************************************/
|
|
int CSoundBase::Init ( const int iNewPrefMonoBufferSize )
|
|
{
|
|
// init audio sound card buffer
|
|
if ( !bIsCallbackAudioInterface )
|
|
{
|
|
vecsAudioSndCrdStereo.Init ( 2 * iNewPrefMonoBufferSize /* stereo */ );
|
|
}
|
|
|
|
return iNewPrefMonoBufferSize;
|
|
}
|
|
|
|
void CSoundBase::Start()
|
|
{
|
|
bRun = true;
|
|
|
|
// TODO start audio interface
|
|
|
|
// start the audio thread in case we do not have an callback
|
|
// based audio interface
|
|
if ( !bIsCallbackAudioInterface )
|
|
{
|
|
start();
|
|
}
|
|
}
|
|
|
|
void CSoundBase::Stop()
|
|
{
|
|
// set flag so that thread can leave the main loop
|
|
bRun = false;
|
|
|
|
// give thread some time to terminate
|
|
if ( !bIsCallbackAudioInterface )
|
|
{
|
|
wait ( 5000 );
|
|
}
|
|
}
|
|
|
|
void CSoundBase::run()
|
|
{
|
|
// Set thread priority (The working thread should have a higher
|
|
// priority than the GUI)
|
|
#ifdef _WIN32
|
|
SetThreadPriority ( GetCurrentThread(), THREAD_PRIORITY_TIME_CRITICAL );
|
|
#else
|
|
/*
|
|
// set the process to realtime privs, taken from
|
|
// "http://www.gardena.net/benno/linux/audio" but does not seem to work,
|
|
// maybe a problem with user rights
|
|
struct sched_param schp;
|
|
memset ( &schp, 0, sizeof ( schp ) );
|
|
schp.sched_priority = sched_get_priority_max ( SCHED_FIFO );
|
|
sched_setscheduler ( 0, SCHED_FIFO, &schp );
|
|
*/
|
|
#endif
|
|
|
|
// main loop of working thread
|
|
while ( bRun )
|
|
{
|
|
// get audio from sound card (blocking function)
|
|
if ( Read ( vecsAudioSndCrdStereo ) )
|
|
{
|
|
PostWinMessage ( MS_SOUND_IN, MUL_COL_LED_RED );
|
|
}
|
|
else
|
|
{
|
|
PostWinMessage ( MS_SOUND_IN, MUL_COL_LED_GREEN );
|
|
}
|
|
|
|
// process audio data
|
|
(*fpProcessCallback) ( vecsAudioSndCrdStereo, pProcessCallbackArg );
|
|
|
|
// play the new block
|
|
if ( Write ( vecsAudioSndCrdStereo ) )
|
|
{
|
|
PostWinMessage ( MS_SOUND_OUT, MUL_COL_LED_RED );
|
|
}
|
|
else
|
|
{
|
|
PostWinMessage ( MS_SOUND_OUT, MUL_COL_LED_GREEN );
|
|
}
|
|
}
|
|
}
|