JackLoopbackDriver.cpp

00001 /*
00002 Copyright (C) 2001 Paul Davis 
00003 Copyright (C) 2004-2008 Grame
00004 
00005 This program is free software; you can redistribute it and/or modify
00006 it under the terms of the GNU General Public License as published by
00007 the Free Software Foundation; either version 2 of the License, or
00008 (at your option) any later version.
00009 
00010 This program is distributed in the hope that it will be useful,
00011 but WITHOUT ANY WARRANTY; without even the implied warranty of
00012 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00013 GNU General Public License for more details.
00014 
00015 You should have received a copy of the GNU General Public License
00016 along with this program; if not, write to the Free Software
00017 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
00018 
00019 */
00020 
00021 #ifdef WIN32 
00022 #pragma warning (disable : 4786)
00023 #endif
00024 
00025 #include "JackLoopbackDriver.h"
00026 #include "JackEngineControl.h"
00027 #include "JackGraphManager.h"
00028 #include <iostream>
00029 #include <assert.h>
00030 
00031 namespace Jack
00032 {
00033 
00034 int JackLoopbackDriver::Process()
00035 {
00036     assert(fCaptureChannels == fPlaybackChannels);
00037 
00038     // Loopback copy
00039     for (int i = 0; i < fCaptureChannels; i++) {
00040         memcpy(GetInputBuffer(i), GetOutputBuffer(i), sizeof(float) * fEngineControl->fBufferSize);
00041         }
00042 
00043     fGraphManager->ResumeRefNum(fClientControl, fSynchroTable); // Signal all clients
00044     if (fEngineControl->fSyncMode) {
00045         if (fGraphManager->SuspendRefNum(fClientControl, fSynchroTable, fEngineControl->fTimeOutUsecs) < 0) {
00046             jack_error("JackLoopbackDriver::ProcessSync SuspendRefNum error");
00047                         return -1;
00048                 }
00049     }
00050     return 0;
00051 }
00052 
00053 } // end of namespace

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