view data/model/AggregateWaveModel.cpp @ 1196:c7b9c902642f spectrogram-minor-refactor

Fix threshold in spectrogram -- it wasn't working in the last release.
There is a new protocol for this. Formerly the threshold parameter had a
range from -50dB to 0 with the default at -50, and -50 treated internally
as "no threshold". However, there was a hardcoded, hidden internal threshold
for spectrogram colour mapping at -80dB with anything below this being rounded
to zero. Now the threshold parameter has range -81 to -1 with the default
at -80, -81 is treated internally as "no threshold", and there is no hidden
internal threshold. So the default behaviour is the same as before, an
effective -80dB threshold, but it is now possible to change this in both
directions. Sessions reloaded from prior versions may look slightly different
because, if the session says there should be no threshold, there will now
actually be no threshold instead of having the hidden internal one.

Still need to do something in the UI to make it apparent that the -81dB
setting removes the threshold entirely. This is at least no worse than the
previous, also obscured, magic -50dB setting.

/* -*- 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 2007 QMUL.
    
    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 "AggregateWaveModel.h"

#include <iostream>

#include <QTextStream>

using namespace std;

PowerOfSqrtTwoZoomConstraint
AggregateWaveModel::m_zoomConstraint;

AggregateWaveModel::AggregateWaveModel(ChannelSpecList channelSpecs) :
    m_components(channelSpecs)
{
    for (ChannelSpecList::const_iterator i = channelSpecs.begin();
         i != channelSpecs.end(); ++i) {
        if (i->model->getSampleRate() !=
            channelSpecs.begin()->model->getSampleRate()) {
            SVDEBUG << "AggregateWaveModel::AggregateWaveModel: WARNING: Component models do not all have the same sample rate" << endl;
            break;
        }
    }
}

AggregateWaveModel::~AggregateWaveModel()
{
}

bool
AggregateWaveModel::isOK() const
{
    for (ChannelSpecList::const_iterator i = m_components.begin();
         i != m_components.end(); ++i) {
        if (!i->model->isOK()) return false;
    }
    return true;
}

bool
AggregateWaveModel::isReady(int *completion) const
{
    if (completion) *completion = 100;
    bool ready = true;
    for (ChannelSpecList::const_iterator i = m_components.begin();
         i != m_components.end(); ++i) {
        int completionHere = 100;
        if (!i->model->isReady(&completionHere)) ready = false;
        if (completion && completionHere < *completion) {
            *completion = completionHere;
        }
    }
    return ready;
}

sv_frame_t
AggregateWaveModel::getFrameCount() const
{
    sv_frame_t count = 0;

    for (ChannelSpecList::const_iterator i = m_components.begin();
         i != m_components.end(); ++i) {
        sv_frame_t thisCount = i->model->getEndFrame() - i->model->getStartFrame();
        if (thisCount > count) count = thisCount;
    }

    return count;
}

int
AggregateWaveModel::getChannelCount() const
{
    return int(m_components.size());
}

sv_samplerate_t
AggregateWaveModel::getSampleRate() const
{
    if (m_components.empty()) return 0;
    return m_components.begin()->model->getSampleRate();
}

vector<float>
AggregateWaveModel::getData(int channel, sv_frame_t start, sv_frame_t count) const
{
    int ch0 = channel, ch1 = channel;
    if (channel == -1) {
        ch0 = 0;
        ch1 = getChannelCount()-1;
    }

    vector<float> result(count, 0.f);

    sv_frame_t longest = 0;
    
    for (int c = ch0; c <= ch1; ++c) {

        auto here = m_components[c].model->getData(m_components[c].channel,
                                                   start, count);
        if (sv_frame_t(here.size()) > longest) {
            longest = sv_frame_t(here.size());
        }
        for (sv_frame_t i = 0; in_range_for(here, i); ++i) {
            result[i] += here[i];
        }
    }

    result.resize(longest);
    return result;
}

vector<vector<float>>
AggregateWaveModel::getMultiChannelData(int fromchannel, int tochannel,
                                        sv_frame_t start, sv_frame_t count) const
{
    sv_frame_t min = count;

    vector<vector<float>> result;

    for (int c = fromchannel; c <= tochannel; ++c) {
        auto here = getData(c, start, count);
        if (sv_frame_t(here.size()) < min) {
            min = sv_frame_t(here.size());
        }
        result.push_back(here);
    }

    if (min < count) {
        for (auto &v : result) v.resize(min);
    }
    
    return result;
}

int
AggregateWaveModel::getSummaryBlockSize(int desired) const
{
    //!!! complete
    return desired;
}
        
void
AggregateWaveModel::getSummaries(int, sv_frame_t, sv_frame_t,
                                 RangeBlock &, int &) const
{
    //!!! complete
}

AggregateWaveModel::Range
AggregateWaveModel::getSummary(int, sv_frame_t, sv_frame_t) const
{
    //!!! complete
    return Range();
}
        
int
AggregateWaveModel::getComponentCount() const
{
    return int(m_components.size());
}

AggregateWaveModel::ModelChannelSpec
AggregateWaveModel::getComponent(int c) const
{
    return m_components[c];
}

void
AggregateWaveModel::componentModelChanged()
{
    emit modelChanged();
}

void
AggregateWaveModel::componentModelChangedWithin(sv_frame_t start, sv_frame_t end)
{
    emit modelChangedWithin(start, end);
}

void
AggregateWaveModel::componentModelCompletionChanged()
{
    emit completionChanged();
}

void
AggregateWaveModel::toXml(QTextStream &,
                          QString ,
                          QString ) const
{
    //!!! complete
}