annotate data/fileio/ResamplingWavFileReader.cpp @ 773:2079abf4f0c1 tonioni

make a new FlexiNoteModel.h file by copying from NoteModel.h -- will need to change names therein
author matthiasm
date Tue, 26 Mar 2013 14:16:54 +0000
parents 1424aa29ae95
children
rev   line source
Chris@297 1 /* -*- c-basic-offset: 4 indent-tabs-mode: nil -*- vi:set ts=8 sts=4 sw=4: */
Chris@297 2
Chris@297 3 /*
Chris@297 4 Sonic Visualiser
Chris@297 5 An audio file viewer and annotation editor.
Chris@297 6 Centre for Digital Music, Queen Mary, University of London.
Chris@297 7 This file copyright 2007 QMUL.
Chris@297 8
Chris@297 9 This program is free software; you can redistribute it and/or
Chris@297 10 modify it under the terms of the GNU General Public License as
Chris@297 11 published by the Free Software Foundation; either version 2 of the
Chris@297 12 License, or (at your option) any later version. See the file
Chris@297 13 COPYING included with this distribution for more information.
Chris@297 14 */
Chris@297 15
Chris@297 16 #include "ResamplingWavFileReader.h"
Chris@297 17
Chris@297 18 #include "WavFileReader.h"
Chris@297 19 #include "base/Profiler.h"
Chris@392 20 #include "base/ProgressReporter.h"
Chris@297 21
Chris@297 22 #include <QFileInfo>
Chris@297 23
Chris@317 24 ResamplingWavFileReader::ResamplingWavFileReader(FileSource source,
Chris@297 25 ResampleMode resampleMode,
Chris@297 26 CacheMode mode,
Chris@392 27 size_t targetRate,
Chris@392 28 ProgressReporter *reporter) :
Chris@297 29 CodedAudioFileReader(mode, targetRate),
Chris@316 30 m_source(source),
Chris@316 31 m_path(source.getLocalFilename()),
Chris@297 32 m_cancelled(false),
Chris@297 33 m_processed(0),
Chris@297 34 m_completion(0),
Chris@297 35 m_original(0),
Chris@392 36 m_reporter(reporter),
Chris@297 37 m_decodeThread(0)
Chris@297 38 {
Chris@297 39 m_channelCount = 0;
Chris@297 40 m_fileRate = 0;
Chris@297 41
Chris@690 42 SVDEBUG << "ResamplingWavFileReader::ResamplingWavFileReader(\""
Chris@687 43 << m_path << "\"): rate " << targetRate << endl;
Chris@297 44
Chris@297 45 Profiler profiler("ResamplingWavFileReader::ResamplingWavFileReader", true);
Chris@297 46
Chris@316 47 m_original = new WavFileReader(m_path);
Chris@297 48 if (!m_original->isOK()) {
Chris@297 49 m_error = m_original->getError();
Chris@297 50 return;
Chris@297 51 }
Chris@297 52
Chris@297 53 m_channelCount = m_original->getChannelCount();
Chris@297 54 m_fileRate = m_original->getSampleRate();
Chris@297 55
Chris@297 56 initialiseDecodeCache();
Chris@297 57
Chris@297 58 if (resampleMode == ResampleAtOnce) {
Chris@297 59
Chris@392 60 if (m_reporter) {
Chris@392 61 connect(m_reporter, SIGNAL(cancelled()), this, SLOT(cancelled()));
Chris@392 62 m_reporter->setMessage
Chris@392 63 (tr("Resampling %1...").arg(QFileInfo(m_path).fileName()));
Chris@327 64 }
Chris@297 65
Chris@297 66 size_t blockSize = 16384;
Chris@297 67 size_t total = m_original->getFrameCount();
Chris@297 68
Chris@297 69 SampleBlock block;
Chris@297 70
Chris@297 71 for (size_t i = 0; i < total; i += blockSize) {
Chris@297 72
Chris@297 73 size_t count = blockSize;
Chris@297 74 if (i + count > total) count = total - i;
Chris@297 75
Chris@297 76 m_original->getInterleavedFrames(i, count, block);
Chris@297 77 addBlock(block);
Chris@297 78
Chris@297 79 if (m_cancelled) break;
Chris@297 80 }
Chris@297 81
Chris@297 82 if (isDecodeCacheInitialised()) finishDecodeCache();
Chris@398 83 endSerialised();
Chris@297 84
Chris@403 85 if (m_reporter) m_reporter->setProgress(100);
Chris@403 86
Chris@297 87 delete m_original;
Chris@297 88 m_original = 0;
Chris@297 89
Chris@392 90 } else {
Chris@297 91
Chris@392 92 if (m_reporter) m_reporter->setProgress(100);
Chris@297 93
Chris@297 94 m_decodeThread = new DecodeThread(this);
Chris@297 95 m_decodeThread->start();
Chris@297 96 }
Chris@297 97 }
Chris@297 98
Chris@297 99 ResamplingWavFileReader::~ResamplingWavFileReader()
Chris@297 100 {
Chris@297 101 if (m_decodeThread) {
Chris@297 102 m_cancelled = true;
Chris@297 103 m_decodeThread->wait();
Chris@297 104 delete m_decodeThread;
Chris@297 105 }
Chris@297 106
Chris@297 107 delete m_original;
Chris@297 108 }
Chris@297 109
Chris@297 110 void
Chris@392 111 ResamplingWavFileReader::cancelled()
Chris@392 112 {
Chris@392 113 m_cancelled = true;
Chris@392 114 }
Chris@392 115
Chris@392 116 void
Chris@297 117 ResamplingWavFileReader::DecodeThread::run()
Chris@297 118 {
Chris@297 119 if (m_reader->m_cacheMode == CacheInTemporaryFile) {
Chris@297 120 m_reader->startSerialised("ResamplingWavFileReader::Decode");
Chris@297 121 }
Chris@297 122
Chris@297 123 size_t blockSize = 16384;
Chris@297 124 size_t total = m_reader->m_original->getFrameCount();
Chris@297 125
Chris@297 126 SampleBlock block;
Chris@297 127
Chris@297 128 for (size_t i = 0; i < total; i += blockSize) {
Chris@297 129
Chris@297 130 size_t count = blockSize;
Chris@297 131 if (i + count > total) count = total - i;
Chris@297 132
Chris@297 133 m_reader->m_original->getInterleavedFrames(i, count, block);
Chris@297 134 m_reader->addBlock(block);
Chris@297 135
Chris@297 136 if (m_reader->m_cancelled) break;
Chris@297 137 }
Chris@297 138
Chris@297 139 if (m_reader->isDecodeCacheInitialised()) m_reader->finishDecodeCache();
Chris@297 140 m_reader->m_completion = 100;
Chris@297 141
Chris@297 142 m_reader->endSerialised();
Chris@297 143
Chris@297 144 delete m_reader->m_original;
Chris@297 145 m_reader->m_original = 0;
Chris@297 146 }
Chris@297 147
Chris@297 148 void
Chris@297 149 ResamplingWavFileReader::addBlock(const SampleBlock &frames)
Chris@297 150 {
Chris@297 151 addSamplesToDecodeCache(frames);
Chris@297 152
Chris@297 153 m_processed += frames.size();
Chris@297 154
Chris@403 155 float ratio = float(m_sampleRate) / float(m_fileRate);
Chris@403 156
Chris@403 157 int progress = lrint((float(m_processed) * ratio * 100) /
Chris@297 158 float(m_original->getFrameCount()));
Chris@297 159
Chris@297 160 if (progress > 99) progress = 99;
Chris@297 161 m_completion = progress;
Chris@297 162
Chris@392 163 if (m_reporter) {
Chris@392 164 m_reporter->setProgress(progress);
Chris@297 165 }
Chris@297 166 }
Chris@297 167
Chris@297 168 void
Chris@297 169 ResamplingWavFileReader::getSupportedExtensions(std::set<QString> &extensions)
Chris@297 170 {
Chris@297 171 WavFileReader::getSupportedExtensions(extensions);
Chris@297 172 }
Chris@297 173
Chris@316 174 bool
Chris@316 175 ResamplingWavFileReader::supportsExtension(QString extension)
Chris@316 176 {
Chris@316 177 return WavFileReader::supportsExtension(extension);
Chris@316 178 }
Chris@297 179
Chris@316 180 bool
Chris@316 181 ResamplingWavFileReader::supportsContentType(QString type)
Chris@316 182 {
Chris@316 183 return WavFileReader::supportsContentType(type);
Chris@316 184 }
Chris@316 185
Chris@316 186 bool
Chris@317 187 ResamplingWavFileReader::supports(FileSource &source)
Chris@316 188 {
Chris@316 189 return WavFileReader::supports(source);
Chris@316 190 }
Chris@316 191
Chris@316 192