Chris@297: /* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */
Chris@297: 
Chris@297: /*
Chris@297:     Sonic Visualiser
Chris@297:     An audio file viewer and annotation editor.
Chris@297:     Centre for Digital Music, Queen Mary, University of London.
Chris@297:     This file copyright 2007 QMUL.
Chris@297:     
Chris@297:     This program is free software; you can redistribute it and/or
Chris@297:     modify it under the terms of the GNU General Public License as
Chris@297:     published by the Free Software Foundation; either version 2 of the
Chris@297:     License, or (at your option) any later version.  See the file
Chris@297:     COPYING included with this distribution for more information.
Chris@297: */
Chris@297: 
Chris@297: #include "AggregateWaveModel.h"
Chris@297: 
Chris@297: #include <iostream>
Chris@297: 
Chris@314: #include <QTextStream>
Chris@314: 
Chris@297: PowerOfSqrtTwoZoomConstraint
Chris@297: AggregateWaveModel::m_zoomConstraint;
Chris@297: 
Chris@297: AggregateWaveModel::AggregateWaveModel(ChannelSpecList channelSpecs) :
Chris@297:     m_components(channelSpecs)
Chris@297: {
Chris@297:     for (ChannelSpecList::const_iterator i = channelSpecs.begin();
Chris@297:          i != channelSpecs.end(); ++i) {
Chris@297:         if (i->model->getSampleRate() !=
Chris@297:             channelSpecs.begin()->model->getSampleRate()) {
Chris@297:             std::cerr << "AggregateWaveModel::AggregateWaveModel: WARNING: Component models do not all have the same sample rate" << std::endl;
Chris@297:             break;
Chris@297:         }
Chris@297:     }
Chris@297: }
Chris@297: 
Chris@297: AggregateWaveModel::~AggregateWaveModel()
Chris@297: {
Chris@297: }
Chris@297: 
Chris@297: bool
Chris@297: AggregateWaveModel::isOK() const
Chris@297: {
Chris@297:     for (ChannelSpecList::const_iterator i = m_components.begin();
Chris@297:          i != m_components.end(); ++i) {
Chris@297:         if (!i->model->isOK()) return false;
Chris@297:     }
Chris@297:     return true;
Chris@297: }
Chris@297: 
Chris@297: bool
Chris@297: AggregateWaveModel::isReady(int *completion) const
Chris@297: {
Chris@297:     if (completion) *completion = 100;
Chris@297:     bool ready = true;
Chris@297:     for (ChannelSpecList::const_iterator i = m_components.begin();
Chris@297:          i != m_components.end(); ++i) {
Chris@297:         int completionHere = 100;
Chris@297:         if (!i->model->isReady(&completionHere)) ready = false;
Chris@297:         if (completion && completionHere < *completion) {
Chris@297:             *completion = completionHere;
Chris@297:         }
Chris@297:     }
Chris@297:     return ready;
Chris@297: }
Chris@297: 
Chris@297: size_t
Chris@297: AggregateWaveModel::getFrameCount() const
Chris@297: {
Chris@297:     size_t count = 0;
Chris@297: 
Chris@297:     for (ChannelSpecList::const_iterator i = m_components.begin();
Chris@297:          i != m_components.end(); ++i) {
Chris@297:         size_t thisCount = i->model->getEndFrame() - i->model->getStartFrame();
Chris@297:         if (thisCount > count) count = thisCount;
Chris@297:     }
Chris@297: 
Chris@297:     return count;
Chris@297: }
Chris@297: 
Chris@297: size_t
Chris@297: AggregateWaveModel::getChannelCount() const
Chris@297: {
Chris@297:     return m_components.size();
Chris@297: }
Chris@297: 
Chris@297: size_t
Chris@297: AggregateWaveModel::getSampleRate() const
Chris@297: {
Chris@297:     if (m_components.empty()) return 0;
Chris@297:     return m_components.begin()->model->getSampleRate();
Chris@297: }
Chris@297: 
Chris@297: Model *
Chris@297: AggregateWaveModel::clone() const
Chris@297: {
Chris@297:     return new AggregateWaveModel(m_components);
Chris@297: }
Chris@297: 
Chris@297: size_t
Chris@300: AggregateWaveModel::getData(int channel, size_t start, size_t count,
Chris@300:                             float *buffer) const
Chris@297: {
Chris@297:     int ch0 = channel, ch1 = channel;
Chris@297:     bool mixing = false;
Chris@297:     if (channel == -1) {
Chris@297:         ch0 = 0;
Chris@297:         ch1 = getChannelCount()-1;
Chris@297:         mixing = true;
Chris@297:     }
Chris@297: 
Chris@297:     float *readbuf = buffer;
Chris@297:     if (mixing) {
Chris@300:         readbuf = new float[count];
Chris@300:         for (size_t i = 0; i < count; ++i) {
Chris@297:             buffer[i] = 0.f;
Chris@297:         }
Chris@297:     }
Chris@297: 
Chris@300:     size_t sz = count;
Chris@300: 
Chris@297:     for (int c = ch0; c <= ch1; ++c) {
Chris@297:         size_t szHere = 
Chris@300:             m_components[c].model->getData(m_components[c].channel,
Chris@300:                                            start, count,
Chris@300:                                            readbuf);
Chris@297:         if (szHere < sz) sz = szHere;
Chris@297:         if (mixing) {
Chris@300:             for (size_t i = 0; i < count; ++i) {
Chris@297:                 buffer[i] += readbuf[i];
Chris@297:             }
Chris@297:         }
Chris@297:     }
Chris@297: 
Chris@297:     if (mixing) delete[] readbuf;
Chris@297:     return sz;
Chris@297: }
Chris@297:          
Chris@297: size_t
Chris@300: AggregateWaveModel::getData(int channel, size_t start, size_t count,
Chris@300:                             double *buffer) const
Chris@297: {
Chris@297:     int ch0 = channel, ch1 = channel;
Chris@297:     bool mixing = false;
Chris@297:     if (channel == -1) {
Chris@297:         ch0 = 0;
Chris@297:         ch1 = getChannelCount()-1;
Chris@297:         mixing = true;
Chris@297:     }
Chris@297: 
Chris@297:     double *readbuf = buffer;
Chris@297:     if (mixing) {
Chris@300:         readbuf = new double[count];
Chris@300:         for (size_t i = 0; i < count; ++i) {
Chris@300:             buffer[i] = 0.0;
Chris@297:         }
Chris@297:     }
Chris@297: 
Chris@300:     size_t sz = count;
Chris@297:     
Chris@297:     for (int c = ch0; c <= ch1; ++c) {
Chris@297:         size_t szHere = 
Chris@300:             m_components[c].model->getData(m_components[c].channel,
Chris@300:                                            start, count,
Chris@300:                                            readbuf);
Chris@297:         if (szHere < sz) sz = szHere;
Chris@297:         if (mixing) {
Chris@300:             for (size_t i = 0; i < count; ++i) {
Chris@297:                 buffer[i] += readbuf[i];
Chris@297:             }
Chris@297:         }
Chris@297:     }
Chris@297:     
Chris@297:     if (mixing) delete[] readbuf;
Chris@297:     return sz;
Chris@297: }
Chris@384: 
Chris@384: size_t
Chris@384: AggregateWaveModel::getData(size_t fromchannel, size_t tochannel,
Chris@384:                             size_t start, size_t count,
Chris@384:                             float **buffer) const
Chris@384: {
Chris@384:     size_t min = count;
Chris@384: 
Chris@384:     for (size_t c = fromchannel; c <= tochannel; ++c) {
Chris@384:         size_t here = getData(c, start, count, buffer[c - fromchannel]);
Chris@384:         if (here < min) min = here;
Chris@384:     }
Chris@384:     
Chris@384:     return min;
Chris@384: }
Chris@384: 
Chris@384: size_t
Chris@384: AggregateWaveModel::getSummaryBlockSize(size_t desired) const
Chris@384: {
Chris@384:     //!!! complete
Chris@384:     return desired;
Chris@384: }
Chris@297:         
Chris@297: void
Chris@300: AggregateWaveModel::getSummaries(size_t channel, size_t start, size_t count,
Chris@300:                                  RangeBlock &ranges, size_t &blockSize) const
Chris@297: {
Chris@297:     //!!! complete
Chris@297: }
Chris@297: 
Chris@297: AggregateWaveModel::Range
Chris@300: AggregateWaveModel::getSummary(size_t channel, size_t start, size_t count) const
Chris@297: {
Chris@297:     //!!! complete
Chris@297:     return Range();
Chris@297: }
Chris@297:         
Chris@297: size_t
Chris@297: AggregateWaveModel::getComponentCount() const
Chris@297: {
Chris@297:     return m_components.size();
Chris@297: }
Chris@297: 
Chris@297: AggregateWaveModel::ModelChannelSpec
Chris@297: AggregateWaveModel::getComponent(size_t c) const
Chris@297: {
Chris@297:     return m_components[c];
Chris@297: }
Chris@297: 
Chris@297: void
Chris@297: AggregateWaveModel::componentModelChanged()
Chris@297: {
Chris@297:     emit modelChanged();
Chris@297: }
Chris@297: 
Chris@297: void
Chris@297: AggregateWaveModel::componentModelChanged(size_t start, size_t end)
Chris@297: {
Chris@297:     emit modelChanged(start, end);
Chris@297: }
Chris@297: 
Chris@297: void
Chris@297: AggregateWaveModel::componentModelCompletionChanged()
Chris@297: {
Chris@297:     emit completionChanged();
Chris@297: }
Chris@297: 
Chris@297: void
Chris@297: AggregateWaveModel::toXml(QTextStream &out,
Chris@297:                           QString indent,
Chris@297:                           QString extraAttributes) const
Chris@297: {
Chris@297:     //!!! complete
Chris@297: }
Chris@297: