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: #include "ClipMixer.h"
Chris@305: 
Chris@305: #include <sndfile.h>
Chris@305: 
Chris@305: #include "base/Debug.h"
Chris@305: 
Chris@305: ClipMixer::ClipMixer(int channels, int sampleRate, int blockSize) :
Chris@305:     m_channels(channels),
Chris@305:     m_sampleRate(sampleRate),
Chris@305:     m_blockSize(blockSize),
Chris@305:     m_clipData(0)
Chris@305: {
Chris@305: }
Chris@305: 
Chris@305: ClipMixer::~ClipMixer()
Chris@305: {
Chris@305:     delete[] m_clipData;
Chris@305: }
Chris@305: 
Chris@305: bool
Chris@305: ClipMixer::loadClipData(QString path, float f0)
Chris@305: {
Chris@305:     if (m_clipData) {
Chris@307:         cerr << "ClipMixer::loadClipData: Already have clip loaded" << endl;
Chris@305:         return false;
Chris@305:     }
Chris@305: 
Chris@305:     SF_INFO info;
Chris@305:     SNDFILE *file;
Chris@305:     int sampleCount = 0;
Chris@305:     float *tmpFrames;
Chris@305:     size_t i;
Chris@305: 
Chris@305:     info.format = 0;
Chris@305:     file = sf_open(path.toLocal8Bit().data(), SFM_READ, &info);
Chris@305:     if (!file) {
Chris@307: 	cerr << "ClipMixer::loadClipData: Failed to open file "
Chris@305:              << path << ": " << sf_strerror(file) << endl;
Chris@305: 	return false;
Chris@305:     }
Chris@305: 
Chris@305:     tmpFrames = (float *)malloc(info.frames * info.channels * sizeof(float));
Chris@305:     if (!tmpFrames) {
Chris@307:         cerr << "ClipMixer::loadClipData: malloc(" << info.frames * info.channels * sizeof(float) << ") failed" << endl;
Chris@305:         return false;
Chris@305:     }
Chris@305: 
Chris@305:     sf_readf_float(file, tmpFrames, info.frames);
Chris@305:     sf_close(file);
Chris@305: 
Chris@305:     m_clipData = (float *)malloc(info.frames * sizeof(float));
Chris@305:     if (!m_clipData) {
Chris@307:         cerr << "ClipMixer::loadClipData: malloc(" << info.frames * sizeof(float) << ") failed" << endl;
Chris@305: 	free(tmpFrames);
Chris@305: 	return false;
Chris@305:     }
Chris@305: 
Chris@305:     for (i = 0; i < info.frames; ++i) {
Chris@305: 	int j;
Chris@305: 	m_clipData[i] = 0.0f;
Chris@305: 	for (j = 0; j < info.channels; ++j) {
Chris@305: 	    m_clipData[i] += tmpFrames[i * info.channels + j];
Chris@305: 	}
Chris@305:     }
Chris@305: 
Chris@305:     free(tmpFrames);
Chris@305: 
Chris@305:     m_clipLength = info.frames;
Chris@305:     m_clipF0 = f0;
Chris@305:     m_clipRate = info.samplerate;
Chris@305: }
Chris@307: 
Chris@307: void
Chris@307: ClipMixer::mix(float **toBuffers, 
Chris@307:                std::vector<NoteStart> newNotes, 
Chris@307:                std::vector<NoteEnd> endingNotes)
Chris@307: {
Chris@307:     //!!! do this!
Chris@307: }
Chris@307: