diff data/model/AggregateWaveModel.cpp @ 297:c022976d18e8

* Merge from sv-match-alignment branch (excluding alignment-specific document).
  - add aggregate wave model (not yet complete enough to be added as a true
    model in a layer, but there's potential)
  - add play solo mode
  - add alignment model -- unused in plain SV
  - fix two plugin leaks
  - add m3u playlist support (opens all files at once, potentially hazardous)
  - fix retrieval of pre-encoded URLs
  - add ability to resample audio files on import, so as to match rates with
    other files previously loaded; add preference for same
  - add preliminary support in transform code for range and rate of transform
    input
  - reorganise preferences dialog, move dark-background option to preferences,
    add option for temporary directory location

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/data/model/AggregateWaveModel.cpp	Fri Sep 28 13:56:38 2007 +0000
@@ -0,0 +1,228 @@
+/* -*- 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>
+
+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()) {
+            std::cerr << "AggregateWaveModel::AggregateWaveModel: WARNING: Component models do not all have the same sample rate" << std::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;
+}
+
+size_t
+AggregateWaveModel::getFrameCount() const
+{
+    size_t count = 0;
+
+    for (ChannelSpecList::const_iterator i = m_components.begin();
+         i != m_components.end(); ++i) {
+        size_t thisCount = i->model->getEndFrame() - i->model->getStartFrame();
+        if (thisCount > count) count = thisCount;
+    }
+
+    return count;
+}
+
+size_t
+AggregateWaveModel::getChannelCount() const
+{
+    return m_components.size();
+}
+
+size_t
+AggregateWaveModel::getSampleRate() const
+{
+    if (m_components.empty()) return 0;
+    return m_components.begin()->model->getSampleRate();
+}
+
+Model *
+AggregateWaveModel::clone() const
+{
+    return new AggregateWaveModel(m_components);
+}
+
+size_t
+AggregateWaveModel::getValues(int channel, size_t start, size_t end,
+                              float *buffer) const
+{
+    int ch0 = channel, ch1 = channel;
+    bool mixing = false;
+    if (channel == -1) {
+        ch0 = 0;
+        ch1 = getChannelCount()-1;
+        mixing = true;
+    }
+
+    float *readbuf = buffer;
+    if (mixing) {
+        readbuf = new float[end - start];
+        for (size_t i = 0; i < end - start; ++i) {
+            buffer[i] = 0.f;
+        }
+    }
+
+    size_t sz = end - start;
+    
+    for (int c = ch0; c <= ch1; ++c) {
+        size_t szHere = 
+            m_components[c].model->getValues(m_components[c].channel,
+                                             start, end,
+                                             readbuf);
+        if (szHere < sz) sz = szHere;
+        if (mixing) {
+            for (size_t i = 0; i < end - start; ++i) {
+                buffer[i] += readbuf[i];
+            }
+        }
+    }
+
+    if (mixing) delete[] readbuf;
+    return sz;
+}
+         
+size_t
+AggregateWaveModel::getValues(int channel, size_t start, size_t end,
+                              double *buffer) const
+{
+    int ch0 = channel, ch1 = channel;
+    bool mixing = false;
+    if (channel == -1) {
+        ch0 = 0;
+        ch1 = getChannelCount()-1;
+        mixing = true;
+    }
+
+    double *readbuf = buffer;
+    if (mixing) {
+        readbuf = new double[end - start];
+        for (size_t i = 0; i < end - start; ++i) {
+            buffer[i] = 0.f;
+        }
+    }
+
+    size_t sz = end - start;
+    
+    for (int c = ch0; c <= ch1; ++c) {
+        size_t szHere = 
+            m_components[c].model->getValues(m_components[c].channel,
+                                             start, end,
+                                             readbuf);
+        if (szHere < sz) sz = szHere;
+        if (mixing) {
+            for (size_t i = 0; i < end - start; ++i) {
+                buffer[i] += readbuf[i];
+            }
+        }
+    }
+    
+    if (mixing) delete[] readbuf;
+    return sz;
+}
+        
+void
+AggregateWaveModel::getRanges(size_t channel, size_t start, size_t end,
+                              RangeBlock &ranges, size_t &blockSize) const
+{
+    //!!! complete
+}
+
+AggregateWaveModel::Range
+AggregateWaveModel::getRange(size_t channel, size_t start, size_t end) const
+{
+    //!!! complete
+    return Range();
+}
+        
+size_t
+AggregateWaveModel::getComponentCount() const
+{
+    return m_components.size();
+}
+
+AggregateWaveModel::ModelChannelSpec
+AggregateWaveModel::getComponent(size_t c) const
+{
+    return m_components[c];
+}
+
+void
+AggregateWaveModel::componentModelChanged()
+{
+    emit modelChanged();
+}
+
+void
+AggregateWaveModel::componentModelChanged(size_t start, size_t end)
+{
+    emit modelChanged(start, end);
+}
+
+void
+AggregateWaveModel::componentModelCompletionChanged()
+{
+    emit completionChanged();
+}
+
+void
+AggregateWaveModel::toXml(QTextStream &out,
+                          QString indent,
+                          QString extraAttributes) const
+{
+    //!!! complete
+}
+