view data/fileio/AudioFileReader.cpp @ 795:dc20458f6f85 qt5

Don't need to check for Dataquay, and in fact we can pick up the wrong version if we do. Just assume it is available (building in e.g. sv subdir configuration)

/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */

/*
    Sonic Visualiser
    An audio file viewer and annotation editor.
    Centre for Digital Music, Queen Mary, University of London.
    This file copyright 2006 Chris Cannam.
    
    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.  See the file
    COPYING included with this distribution for more information.
*/

#include "AudioFileReader.h"

void
AudioFileReader::getDeInterleavedFrames(size_t start, size_t count,
                                        std::vector<SampleBlock> &frames) const
{
    SampleBlock interleaved;
    getInterleavedFrames(start, count, interleaved);
    
    size_t channels = getChannelCount();
    size_t rc = interleaved.size() / channels;

    frames.clear();

    for (size_t c = 0; c < channels; ++c) {
        frames.push_back(SampleBlock());
    }

    for (size_t i = 0; i < rc; ++i) {
        for (size_t c = 0; c < channels; ++c) {
            frames[c].push_back(interleaved[i * channels + c]);
        }
    }
}