Mercurial > hg > svcore
view data/model/AggregateWaveModel.cpp @ 335:02d2ad95ea52 spectrogram-cache-rejig
* Get storage advice for each cache in an FFT data server. Allows us to be
more confident about the actual memory situation and cut over from memory
to disc part way through an FFT calculation if necessary. StorageAdviser
is now a bit too optimistic though (it's too keen to allocate large numbers
of small blocks in memory).
author | Chris Cannam |
---|---|
date | Tue, 13 Nov 2007 13:54:10 +0000 |
parents | 70a232b1f12a |
children | 0e30c8ec15a0 94fc0591ea43 |
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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()) { 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::getData(int channel, size_t start, size_t 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 (size_t i = 0; i < count; ++i) { buffer[i] = 0.f; } } size_t sz = count; for (int c = ch0; c <= ch1; ++c) { size_t szHere = m_components[c].model->getData(m_components[c].channel, start, count, readbuf); if (szHere < sz) sz = szHere; if (mixing) { for (size_t i = 0; i < count; ++i) { buffer[i] += readbuf[i]; } } } if (mixing) delete[] readbuf; return sz; } size_t AggregateWaveModel::getData(int channel, size_t start, size_t 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 (size_t i = 0; i < count; ++i) { buffer[i] = 0.0; } } size_t sz = count; for (int c = ch0; c <= ch1; ++c) { size_t szHere = m_components[c].model->getData(m_components[c].channel, start, count, readbuf); if (szHere < sz) sz = szHere; if (mixing) { for (size_t i = 0; i < count; ++i) { buffer[i] += readbuf[i]; } } } if (mixing) delete[] readbuf; return sz; } void AggregateWaveModel::getSummaries(size_t channel, size_t start, size_t count, RangeBlock &ranges, size_t &blockSize) const { //!!! complete } AggregateWaveModel::Range AggregateWaveModel::getSummary(size_t channel, size_t start, size_t count) 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 }