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//=========================================================
// MusE
// Linux Music Editor
// $Id: audioconvert.h,v 1.1.1.1 2009/12/28 16:07:33 terminator356 Exp $
//
// (C) Copyright 1999-2009 Werner Schweer (ws@seh.de)
//
// Audio converter module created by Tim
// (C) Copyright 2009-2011 Tim E. Real (terminator356 A T sourceforge D O T net)
//
// 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; 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
//
//=========================================================
#ifndef __AUDIOCONVERT_H__
#define __AUDIOCONVERT_H__
#include <map>
#ifdef RUBBERBAND_SUPPORT
#include <RubberBandStretcher.h>
#endif
#include <samplerate.h>
#include <sys/types.h>
namespace MusECore {
class EventBase;
class EventList;
class SndFileR;
//---------------------------------------------------------
// AudioConverter
//---------------------------------------------------------
class AudioConverter
{
protected:
int _refCount;
off_t _sfCurFrame;
public:
AudioConverter();
virtual ~AudioConverter();
AudioConverter* reference();
static AudioConverter* release(AudioConverter* cv);
off_t readAudio(MusECore::SndFileR& sf, unsigned offset, float** buffer,
int channels, int frames, bool doSeek, bool overwrite);
virtual bool isValid() = 0;
virtual void reset() = 0;
virtual void setChannels(int ch) = 0;
virtual off_t process(MusECore::SndFileR& sf, float** buffer,
int channels, int frames, bool overwrite) = 0; // Interleaved buffer if stereo.
};
//---------------------------------------------------------
// SRCAudioConverter
//---------------------------------------------------------
class SRCAudioConverter : public AudioConverter
{
int _type;
int _channels;
SRC_STATE* _src_state;
public:
SRCAudioConverter(int channels, int type);
~SRCAudioConverter();
virtual bool isValid() { return _src_state != 0; }
virtual void reset();
virtual void setChannels(int ch);
virtual off_t process(MusECore::SndFileR& sf, float** buffer,
int channels, int frames, bool overwrite); // Interleaved buffer if stereo.
};
#ifdef RUBBERBAND_SUPPORT
//---------------------------------------------------------
// RubberBandAudioConverter
//---------------------------------------------------------
class RubberBandAudioConverter : public AudioConverter
{
int _options;
int _channels;
RubberBandStretcher* _rbs;
public:
RubberBandAudioConverter(int channels, int options);
~RubberBandAudioConverter();
virtual bool isValid() { return _rbs != 0; }
virtual void reset();
virtual void setChannels(int ch);
virtual off_t process(MusECore::SndFileR& sf, float** buffer,
int channels, int frames, bool overwrite); // Interleaved buffer if stereo.
};
#endif // RUBBERBAND_SUPPORT
//---------------------------------------------------------
// AudioConvertMap
//---------------------------------------------------------
typedef std::map<EventBase*, AudioConverter*, std::less<EventBase*> >::iterator iAudioConvertMap;
typedef std::map<EventBase*, AudioConverter*, std::less<EventBase*> >::const_iterator ciAudioConvertMap;
class AudioConvertMap : public std::map<EventBase*, AudioConverter*, std::less<EventBase*> >
{
public:
void remapEvents(const EventList*);
iAudioConvertMap addEvent(EventBase*);
void removeEvent(EventBase*);
iAudioConvertMap getConverter(EventBase*);
};
} // namespace MusECore
#endif
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