annotate data/model/WritableWaveFileModel.cpp @ 306:4669894a89ad

* textual changes
author Chris Cannam
date Tue, 09 Oct 2007 16:21:10 +0000
parents 5877d68815c7
children 70a232b1f12a
rev   line source
Chris@175 1 /* -*- c-basic-offset: 4 indent-tabs-mode: nil -*- vi:set ts=8 sts=4 sw=4: */
Chris@175 2
Chris@175 3 /*
Chris@175 4 Sonic Visualiser
Chris@175 5 An audio file viewer and annotation editor.
Chris@175 6 Centre for Digital Music, Queen Mary, University of London.
Chris@202 7 This file copyright 2006 QMUL.
Chris@175 8
Chris@175 9 This program is free software; you can redistribute it and/or
Chris@175 10 modify it under the terms of the GNU General Public License as
Chris@175 11 published by the Free Software Foundation; either version 2 of the
Chris@175 12 License, or (at your option) any later version. See the file
Chris@175 13 COPYING included with this distribution for more information.
Chris@175 14 */
Chris@175 15
Chris@175 16 #include "WritableWaveFileModel.h"
Chris@175 17
Chris@175 18 #include "base/TempDirectory.h"
Chris@175 19 #include "base/Exceptions.h"
Chris@175 20
Chris@175 21 #include "fileio/WavFileWriter.h"
Chris@175 22 #include "fileio/WavFileReader.h"
Chris@175 23
Chris@175 24 #include <QDir>
Chris@175 25
Chris@175 26 #include <cassert>
Chris@175 27 #include <iostream>
Chris@175 28
Chris@258 29 //#define DEBUG_WRITABLE_WAVE_FILE_MODEL 1
Chris@187 30
Chris@175 31 WritableWaveFileModel::WritableWaveFileModel(size_t sampleRate,
Chris@175 32 size_t channels,
Chris@175 33 QString path) :
Chris@175 34 m_model(0),
Chris@175 35 m_writer(0),
Chris@175 36 m_reader(0),
Chris@175 37 m_sampleRate(sampleRate),
Chris@175 38 m_channels(channels),
Chris@188 39 m_frameCount(0),
Chris@300 40 m_startFrame(0),
Chris@188 41 m_completion(0)
Chris@175 42 {
Chris@175 43 if (path.isEmpty()) {
Chris@175 44 try {
Chris@175 45 QDir dir(TempDirectory::getInstance()->getPath());
Chris@175 46 path = dir.filePath(QString("written_%1.wav")
Chris@175 47 .arg((intptr_t)this));
Chris@175 48 } catch (DirectoryCreationFailed f) {
Chris@175 49 std::cerr << "WritableWaveFileModel: Failed to create temporary directory" << std::endl;
Chris@175 50 return;
Chris@175 51 }
Chris@175 52 }
Chris@175 53
Chris@175 54 m_writer = new WavFileWriter(path, sampleRate, channels);
Chris@175 55 if (!m_writer->isOK()) {
Chris@175 56 std::cerr << "WritableWaveFileModel: Error in creating WAV file writer: " << m_writer->getError().toStdString() << std::endl;
Chris@175 57 delete m_writer;
Chris@175 58 m_writer = 0;
Chris@175 59 return;
Chris@175 60 }
Chris@187 61
Chris@290 62 m_reader = new WavFileReader(m_writer->getPath(), true);
Chris@290 63 if (!m_reader->getError().isEmpty()) {
Chris@187 64 std::cerr << "WritableWaveFileModel: Error in creating wave file reader" << std::endl;
Chris@187 65 delete m_reader;
Chris@187 66 m_reader = 0;
Chris@187 67 return;
Chris@187 68 }
Chris@187 69
Chris@187 70 m_model = new WaveFileModel(m_writer->getPath(), m_reader);
Chris@187 71 if (!m_model->isOK()) {
Chris@187 72 std::cerr << "WritableWaveFileModel: Error in creating wave file model" << std::endl;
Chris@187 73 delete m_model;
Chris@187 74 m_model = 0;
Chris@187 75 delete m_reader;
Chris@187 76 m_reader = 0;
Chris@187 77 return;
Chris@187 78 }
Chris@300 79 m_model->setStartFrame(m_startFrame);
Chris@187 80
Chris@258 81 connect(m_model, SIGNAL(modelChanged()), this, SIGNAL(modelChanged()));
Chris@258 82 connect(m_model, SIGNAL(modelChanged(size_t, size_t)),
Chris@187 83 this, SIGNAL(modelChanged(size_t, size_t)));
Chris@175 84 }
Chris@175 85
Chris@175 86 WritableWaveFileModel::~WritableWaveFileModel()
Chris@175 87 {
Chris@175 88 delete m_model;
Chris@175 89 delete m_writer;
Chris@175 90 delete m_reader;
Chris@175 91 }
Chris@175 92
Chris@300 93 void
Chris@300 94 WritableWaveFileModel::setStartFrame(size_t startFrame)
Chris@300 95 {
Chris@300 96 m_startFrame = startFrame;
Chris@300 97 if (m_model) m_model->setStartFrame(startFrame);
Chris@300 98 }
Chris@300 99
Chris@175 100 bool
Chris@175 101 WritableWaveFileModel::addSamples(float **samples, size_t count)
Chris@175 102 {
Chris@175 103 if (!m_writer) return false;
Chris@175 104
Chris@258 105 #ifdef DEBUG_WRITABLE_WAVE_FILE_MODEL
Chris@258 106 // std::cerr << "WritableWaveFileModel::addSamples(" << count << ")" << std::endl;
Chris@258 107 #endif
Chris@258 108
Chris@175 109 if (!m_writer->writeSamples(samples, count)) {
Chris@175 110 std::cerr << "ERROR: WritableWaveFileModel::addSamples: writer failed: " << m_writer->getError().toStdString() << std::endl;
Chris@175 111 return false;
Chris@175 112 }
Chris@175 113
Chris@175 114 m_frameCount += count;
Chris@175 115
Chris@187 116 static int updateCounter = 0;
Chris@175 117
Chris@187 118 if (m_reader && m_reader->getChannelCount() == 0) {
Chris@258 119 #ifdef DEBUG_WRITABLE_WAVE_FILE_MODEL
Chris@258 120 std::cerr << "WritableWaveFileModel::addSamples(" << count << "): calling updateFrameCount (initial)" << std::endl;
Chris@258 121 #endif
Chris@187 122 m_reader->updateFrameCount();
Chris@187 123 } else if (++updateCounter == 100) {
Chris@258 124 #ifdef DEBUG_WRITABLE_WAVE_FILE_MODEL
Chris@258 125 std::cerr << "WritableWaveFileModel::addSamples(" << count << "): calling updateFrameCount (periodic)" << std::endl;
Chris@258 126 #endif
Chris@175 127 if (m_reader) m_reader->updateFrameCount();
Chris@175 128 updateCounter = 0;
Chris@175 129 }
Chris@175 130
Chris@175 131 return true;
Chris@175 132 }
Chris@175 133
Chris@175 134 bool
Chris@175 135 WritableWaveFileModel::isOK() const
Chris@175 136 {
Chris@187 137 bool ok = (m_writer && m_writer->isOK());
Chris@188 138 // std::cerr << "WritableWaveFileModel::isOK(): ok = " << ok << std::endl;
Chris@175 139 return ok;
Chris@175 140 }
Chris@175 141
Chris@175 142 bool
Chris@175 143 WritableWaveFileModel::isReady(int *completion) const
Chris@175 144 {
Chris@188 145 if (completion) *completion = m_completion;
Chris@188 146 return (m_completion == 100);
Chris@188 147 }
Chris@188 148
Chris@188 149 void
Chris@188 150 WritableWaveFileModel::setCompletion(int completion)
Chris@188 151 {
Chris@188 152 m_completion = completion;
Chris@188 153 if (completion == 100) {
Chris@188 154 if (m_reader) m_reader->updateDone();
Chris@188 155 }
Chris@175 156 }
Chris@175 157
Chris@175 158 size_t
Chris@175 159 WritableWaveFileModel::getFrameCount() const
Chris@175 160 {
Chris@188 161 // std::cerr << "WritableWaveFileModel::getFrameCount: count = " << m_frameCount << std::endl;
Chris@175 162 return m_frameCount;
Chris@175 163 }
Chris@175 164
Chris@175 165 Model *
Chris@175 166 WritableWaveFileModel::clone() const
Chris@175 167 {
Chris@175 168 assert(0); //!!!
Chris@188 169 return 0;
Chris@175 170 }
Chris@175 171
Chris@175 172 size_t
Chris@300 173 WritableWaveFileModel::getData(int channel, size_t start, size_t count,
Chris@300 174 float *buffer) const
Chris@175 175 {
Chris@187 176 if (!m_model || m_model->getChannelCount() == 0) return 0;
Chris@300 177 return m_model->getData(channel, start, count, buffer);
Chris@175 178 }
Chris@175 179
Chris@175 180 size_t
Chris@300 181 WritableWaveFileModel::getData(int channel, size_t start, size_t count,
Chris@300 182 double *buffer) const
Chris@175 183 {
Chris@187 184 if (!m_model || m_model->getChannelCount() == 0) return 0;
Chris@175 185 // std::cerr << "WritableWaveFileModel::getValues(" << channel << ", "
Chris@175 186 // << start << ", " << end << "): calling model" << std::endl;
Chris@300 187 return m_model->getData(channel, start, count, buffer);
Chris@175 188 }
Chris@175 189
Chris@225 190 void
Chris@300 191 WritableWaveFileModel::getSummaries(size_t channel, size_t start, size_t count,
Chris@300 192 RangeBlock &ranges,
Chris@300 193 size_t &blockSize) const
Chris@175 194 {
Chris@225 195 ranges.clear();
Chris@225 196 if (!m_model || m_model->getChannelCount() == 0) return;
Chris@300 197 m_model->getSummaries(channel, start, count, ranges, blockSize);
Chris@175 198 }
Chris@175 199
Chris@175 200 WritableWaveFileModel::Range
Chris@300 201 WritableWaveFileModel::getSummary(size_t channel, size_t start, size_t count) const
Chris@175 202 {
Chris@187 203 if (!m_model || m_model->getChannelCount() == 0) return Range();
Chris@300 204 return m_model->getSummary(channel, start, count);
Chris@175 205 }
Chris@175 206
Chris@175 207 void
Chris@175 208 WritableWaveFileModel::toXml(QTextStream &out,
Chris@175 209 QString indent,
Chris@175 210 QString extraAttributes) const
Chris@175 211 {
Chris@188 212 // We don't actually write the data to XML. We just write a brief
Chris@188 213 // description of the model. Any code that uses this class is
Chris@188 214 // going to need to be aware that it will have to make separate
Chris@188 215 // arrangements for the audio file itself.
Chris@187 216
Chris@188 217 Model::toXml
Chris@188 218 (out, indent,
Chris@188 219 QString("type=\"writablewavefile\" file=\"%1\" channels=\"%2\" %3")
Chris@188 220 .arg(m_writer->getPath()).arg(m_model->getChannelCount()).arg(extraAttributes));
Chris@175 221 }
Chris@175 222