Chris@305: /* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */
Chris@305: 
Chris@305: /*
Chris@305:     Sonic Visualiser
Chris@305:     An audio file viewer and annotation editor.
Chris@305:     Centre for Digital Music, Queen Mary, University of London.
Chris@305:     This file copyright 2006 Chris Cannam, 2006-2014 QMUL.
Chris@305:     
Chris@305:     This program is free software; you can redistribute it and/or
Chris@305:     modify it under the terms of the GNU General Public License as
Chris@305:     published by the Free Software Foundation; either version 2 of the
Chris@305:     License, or (at your option) any later version.  See the file
Chris@305:     COPYING included with this distribution for more information.
Chris@305: */
Chris@305: 
Chris@305: #ifndef _CLIP_MIXER_H_
Chris@305: #define _CLIP_MIXER_H_
Chris@305: 
Chris@305: #include <QString>
Chris@305: #include <vector>
Chris@305: 
Chris@305: /**
Chris@305:  * Mix in synthetic notes produced by resampling a prerecorded
Chris@305:  * clip. That is, this is a sampler.
Chris@305:  */
Chris@305: 
Chris@305: class ClipMixer
Chris@305: {
Chris@305: public:
Chris@305:     ClipMixer(int channels, int sampleRate, int blockSize);
Chris@305:     ~ClipMixer();
Chris@305: 
Chris@305:     bool loadClipData(QString clipFilePath, float clipF0);
Chris@305: 
Chris@305:     //!!! what can we find in common with the NoteData type and
Chris@305:     //!!! AudioGenerator's NoteOff?
Chris@305: 
Chris@305:     struct NoteStart {
Chris@305: 	int id; // unique to match note end
Chris@305: 	int frameOffset; // in current processing block
Chris@305: 	float frequency; // Hz
Chris@305: 	float level; // volume in range (0,1]
Chris@305: 	float pan; // range [-1,1]
Chris@305:     };
Chris@305: 
Chris@305:     struct NoteEnd {
Chris@305: 	int id; // matching note start
Chris@305: 	int frameOffset; // in current processing block
Chris@305:     };
Chris@305: 
Chris@305:     void mix(float **toBuffers, 
Chris@305: 	     std::vector<NoteStart> newNotes, 
Chris@305: 	     std::vector<NoteEnd> endingNotes);
Chris@305: 
Chris@305: private:
Chris@305:     int m_channels;
Chris@305:     int m_sampleRate;
Chris@305:     int m_blockSize;
Chris@305: 
Chris@305:     QString m_clipPath;
Chris@305: 
Chris@305:     float *m_clipData;
Chris@305:     int m_clipLength;
Chris@305:     float m_clipF0;
Chris@305:     float m_clipRate;
Chris@305: };
Chris@305: 
Chris@305: 
Chris@305: #endif