Mercurial > hg > svcore
view data/model/AggregateWaveModel.cpp @ 1152:d73b4bac2dc4 3.0-integration
Fix one-block rounding error when zoomed a long way out, visible as an offset toward the end of very long audio files
author | Chris Cannam |
---|---|
date | Fri, 22 Jan 2016 12:46:19 +0000 |
parents | 5cbf71022679 |
children | 54af1e21705c |
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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> 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 }