Mercurial > hg > svcore
view data/model/AggregateWaveModel.cpp @ 1008:d9e0e59a1581
When using an aggregate model to pass data to a transform, zero-pad the shorter input to the duration of the longer rather than truncating the longer. (This is better behaviour for e.g. MATCH, and in any case the code was previously truncating incorrectly and ending up with garbage data at the end.)
author | Chris Cannam |
---|---|
date | Fri, 14 Nov 2014 13:51:33 +0000 |
parents | cd42620e3f40 |
children | cc27f35aa75c |
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/* -*- 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> 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; } int AggregateWaveModel::getFrameCount() const { int count = 0; for (ChannelSpecList::const_iterator i = m_components.begin(); i != m_components.end(); ++i) { int thisCount = i->model->getEndFrame() - i->model->getStartFrame(); if (thisCount > count) count = thisCount; } return count; } int AggregateWaveModel::getChannelCount() const { return m_components.size(); } int AggregateWaveModel::getSampleRate() const { if (m_components.empty()) return 0; return m_components.begin()->model->getSampleRate(); } Model * AggregateWaveModel::clone() const { return new AggregateWaveModel(m_components); } int AggregateWaveModel::getData(int channel, int start, int count, 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[count]; for (int i = 0; i < count; ++i) { buffer[i] = 0.f; } } int longest = 0; for (int c = ch0; c <= ch1; ++c) { int here = m_components[c].model->getData(m_components[c].channel, start, count, readbuf); if (here > longest) { longest = here; } if (here < count) { for (int i = here; i < count; ++i) { readbuf[i] = 0.f; } } if (mixing) { for (int i = 0; i < count; ++i) { buffer[i] += readbuf[i]; } } } if (mixing) delete[] readbuf; return longest; } int AggregateWaveModel::getData(int channel, int start, int count, 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[count]; for (int i = 0; i < count; ++i) { buffer[i] = 0.0; } } int longest = 0; for (int c = ch0; c <= ch1; ++c) { int here = m_components[c].model->getData(m_components[c].channel, start, count, readbuf); if (here > longest) { longest = here; } if (here < count) { for (int i = here; i < count; ++i) { readbuf[i] = 0.; } } if (mixing) { for (int i = 0; i < count; ++i) { buffer[i] += readbuf[i]; } } } if (mixing) delete[] readbuf; return longest; } int AggregateWaveModel::getData(int fromchannel, int tochannel, int start, int count, float **buffer) const { int min = count; for (int c = fromchannel; c <= tochannel; ++c) { int here = getData(c, start, count, buffer[c - fromchannel]); if (here < min) min = here; } return min; } int AggregateWaveModel::getSummaryBlockSize(int desired) const { //!!! complete return desired; } void AggregateWaveModel::getSummaries(int, int, int, RangeBlock &, int &) const { //!!! complete } AggregateWaveModel::Range AggregateWaveModel::getSummary(int, int, int) const { //!!! complete return Range(); } int AggregateWaveModel::getComponentCount() const { return m_components.size(); } AggregateWaveModel::ModelChannelSpec AggregateWaveModel::getComponent(int c) const { return m_components[c]; } void AggregateWaveModel::componentModelChanged() { emit modelChanged(); } void AggregateWaveModel::componentModelChangedWithin(int start, int end) { emit modelChangedWithin(start, end); } void AggregateWaveModel::componentModelCompletionChanged() { emit completionChanged(); } void AggregateWaveModel::toXml(QTextStream &, QString , QString ) const { //!!! complete }