Mercurial > hg > svcore
view data/model/WaveFileModel.cpp @ 378:a38cd7823cb2
* PortAudio driver: do not specify frames per buffer, let PA decide
* Remove old non-RubberBand time stretcher -- it doesn't work with varying
buffer sizes such as the PA driver may now be using
* Rewrite getCurrentPlayingFrame for greater correctness when using long
buffer sizes (interpolating according to audio stream timestamp)
* Several changes to make the timestretch management RT safe(r)
author | Chris Cannam |
---|---|
date | Fri, 08 Feb 2008 17:51:15 +0000 |
parents | 166c22eff678 |
children | 183ee2a55fc7 |
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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 2006 Chris Cannam and 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 "WaveFileModel.h" #include "fileio/AudioFileReader.h" #include "fileio/AudioFileReaderFactory.h" #include "system/System.h" #include <QMessageBox> #include <QFileInfo> #include <QTextStream> #include <iostream> #include <unistd.h> #include <math.h> #include <sndfile.h> #include <cassert> //#define DEBUG_WAVE_FILE_MODEL 1 using std::cerr; using std::endl; PowerOfSqrtTwoZoomConstraint WaveFileModel::m_zoomConstraint; WaveFileModel::WaveFileModel(FileSource source, size_t targetRate) : m_source(source), m_path(source.getLocation()), m_myReader(true), m_startFrame(0), m_fillThread(0), m_updateTimer(0), m_lastFillExtent(0), m_exiting(false) { m_source.waitForData(); if (m_source.isOK()) { m_reader = AudioFileReaderFactory::createThreadingReader (m_source, targetRate); if (m_reader) { std::cerr << "WaveFileModel::WaveFileModel: reader rate: " << m_reader->getSampleRate() << std::endl; } } if (m_reader) setObjectName(m_reader->getTitle()); if (objectName() == "") setObjectName(QFileInfo(m_path).fileName()); if (isOK()) fillCache(); } WaveFileModel::WaveFileModel(FileSource source, AudioFileReader *reader) : m_source(source), m_path(source.getLocation()), m_myReader(false), m_startFrame(0), m_fillThread(0), m_updateTimer(0), m_lastFillExtent(0), m_exiting(false) { m_reader = reader; if (m_reader) setObjectName(m_reader->getTitle()); if (objectName() == "") setObjectName(QFileInfo(m_path).fileName()); fillCache(); } WaveFileModel::~WaveFileModel() { m_exiting = true; if (m_fillThread) m_fillThread->wait(); if (m_myReader) delete m_reader; m_reader = 0; } bool WaveFileModel::isOK() const { return m_reader && m_reader->isOK(); } bool WaveFileModel::isReady(int *completion) const { bool ready = (isOK() && (m_fillThread == 0)); double c = double(m_lastFillExtent) / double(getEndFrame() - getStartFrame()); static int prevCompletion = 0; if (completion) { *completion = int(c * 100.0 + 0.01); if (m_reader) { int decodeCompletion = m_reader->getDecodeCompletion(); if (decodeCompletion < 90) *completion = decodeCompletion; else *completion = std::min(*completion, decodeCompletion); } if (*completion != 0 && *completion != 100 && prevCompletion != 0 && prevCompletion > *completion) { // just to avoid completion going backwards *completion = prevCompletion; } prevCompletion = *completion; } #ifdef DEBUG_WAVE_FILE_MODEL std::cerr << "WaveFileModel::isReady(): ready = " << ready << ", completion = " << (completion ? *completion : -1) << std::endl; #endif return ready; } Model * WaveFileModel::clone() const { WaveFileModel *model = new WaveFileModel(m_source); return model; } size_t WaveFileModel::getFrameCount() const { if (!m_reader) return 0; return m_reader->getFrameCount(); } size_t WaveFileModel::getChannelCount() const { if (!m_reader) return 0; return m_reader->getChannelCount(); } size_t WaveFileModel::getSampleRate() const { if (!m_reader) return 0; return m_reader->getSampleRate(); } size_t WaveFileModel::getNativeRate() const { if (!m_reader) return 0; size_t rate = m_reader->getNativeRate(); if (rate == 0) rate = getSampleRate(); return rate; } QString WaveFileModel::getTitle() const { QString title; if (m_reader) title = m_reader->getTitle(); if (title == "") title = objectName(); return title; } QString WaveFileModel::getMaker() const { if (m_reader) return m_reader->getMaker(); return ""; } QString WaveFileModel::getLocation() const { if (m_reader) return m_reader->getLocation(); return ""; } size_t WaveFileModel::getData(int channel, size_t start, size_t count, float *buffer) const { // Always read these directly from the file. // This is used for e.g. audio playback. // Could be much more efficient (although compiler optimisation will help) if (start >= m_startFrame) { start -= m_startFrame; } else { for (size_t i = 0; i < count; ++i) buffer[i] = 0.f; if (count <= m_startFrame - start) { return 0; } else { count -= (m_startFrame - start); start = 0; } } if (!m_reader || !m_reader->isOK() || count == 0) { for (size_t i = 0; i < count; ++i) buffer[i] = 0.f; return 0; } #ifdef DEBUG_WAVE_FILE_MODEL // std::cerr << "WaveFileModel::getValues(" << channel << ", " // << start << ", " << end << "): calling reader" << std::endl; #endif int channels = getChannelCount(); SampleBlock frames(count * channels); m_reader->getInterleavedFrames(start, count, frames); size_t i = 0; int ch0 = channel, ch1 = channel; if (channel == -1) { ch0 = 0; ch1 = channels - 1; } while (i < count) { buffer[i] = 0.0; for (int ch = ch0; ch <= ch1; ++ch) { size_t index = i * channels + ch; if (index >= frames.size()) break; float sample = frames[index]; buffer[i] += sample; } ++i; } return i; } size_t WaveFileModel::getData(int channel, size_t start, size_t count, double *buffer) const { if (start > m_startFrame) { start -= m_startFrame; } else { for (size_t i = 0; i < count; ++i) buffer[i] = 0.0; if (count <= m_startFrame - start) { return 0; } else { count -= (m_startFrame - start); start = 0; } } if (!m_reader || !m_reader->isOK() || count == 0) { for (size_t i = 0; i < count; ++i) buffer[i] = 0.0; return 0; } int channels = getChannelCount(); SampleBlock frames(count * channels); m_reader->getInterleavedFrames(start, count, frames); size_t i = 0; int ch0 = channel, ch1 = channel; if (channel == -1) { ch0 = 0; ch1 = channels - 1; } while (i < count) { buffer[i] = 0.0; for (int ch = ch0; ch <= ch1; ++ch) { size_t index = i * channels + ch; if (index >= frames.size()) break; float sample = frames[index]; buffer[i] += sample; } ++i; } return i; } size_t WaveFileModel::getData(size_t fromchannel, size_t tochannel, size_t start, size_t count, float **buffer) const { size_t channels = getChannelCount(); if (fromchannel > tochannel) { std::cerr << "ERROR: WaveFileModel::getData: fromchannel (" << fromchannel << ") > tochannel (" << tochannel << ")" << std::endl; return 0; } if (tochannel >= channels) { std::cerr << "ERROR: WaveFileModel::getData: tochannel (" << tochannel << ") >= channel count (" << channels << ")" << std::endl; return 0; } if (fromchannel == tochannel) { return getData(fromchannel, start, count, buffer[0]); } size_t reqchannels = (tochannel - fromchannel) + 1; // Always read these directly from the file. // This is used for e.g. audio playback. // Could be much more efficient (although compiler optimisation will help) if (start >= m_startFrame) { start -= m_startFrame; } else { for (size_t c = 0; c < reqchannels; ++c) { for (size_t i = 0; i < count; ++i) buffer[c][i] = 0.f; } if (count <= m_startFrame - start) { return 0; } else { count -= (m_startFrame - start); start = 0; } } if (!m_reader || !m_reader->isOK() || count == 0) { for (size_t c = 0; c < reqchannels; ++c) { for (size_t i = 0; i < count; ++i) buffer[c][i] = 0.f; } return 0; } SampleBlock frames(count * channels); m_reader->getInterleavedFrames(start, count, frames); size_t i = 0; int ch0 = fromchannel, ch1 = tochannel; size_t index = 0, available = frames.size(); while (i < count) { if (index >= available) break; size_t destc = 0; for (size_t c = 0; c < channels; ++c) { if (c >= fromchannel && c <= tochannel) { buffer[destc][i] = frames[index]; ++destc; } ++index; } ++i; } return i; } size_t WaveFileModel::getSummaryBlockSize(size_t desired) const { int cacheType = 0; int power = m_zoomConstraint.getMinCachePower(); size_t roundedBlockSize = m_zoomConstraint.getNearestBlockSize (desired, cacheType, power, ZoomConstraint::RoundDown); if (cacheType != 0 && cacheType != 1) { // We will be reading directly from file, so can satisfy any // blocksize requirement return desired; } else { return roundedBlockSize; } } void WaveFileModel::getSummaries(size_t channel, size_t start, size_t count, RangeBlock &ranges, size_t &blockSize) const { ranges.clear(); if (!isOK()) return; ranges.reserve((count / blockSize) + 1); if (start > m_startFrame) start -= m_startFrame; else if (count <= m_startFrame - start) return; else { count -= (m_startFrame - start); start = 0; } int cacheType = 0; int power = m_zoomConstraint.getMinCachePower(); size_t roundedBlockSize = m_zoomConstraint.getNearestBlockSize (blockSize, cacheType, power, ZoomConstraint::RoundDown); size_t channels = getChannelCount(); if (cacheType != 0 && cacheType != 1) { // We need to read directly from the file. We haven't got // this cached. Hope the requested area is small. This is // not optimal -- we'll end up reading the same frames twice // for stereo files, in two separate calls to this method. // We could fairly trivially handle this for most cases that // matter by putting a single cache in getInterleavedFrames // for short queries. m_directReadMutex.lock(); if (m_lastDirectReadStart != start || m_lastDirectReadCount != count || m_directRead.empty()) { m_reader->getInterleavedFrames(start, count, m_directRead); m_lastDirectReadStart = start; m_lastDirectReadCount = count; } float max = 0.0, min = 0.0, total = 0.0; size_t i = 0, got = 0; while (i < count) { size_t index = i * channels + channel; if (index >= m_directRead.size()) break; float sample = m_directRead[index]; if (sample > max || got == 0) max = sample; if (sample < min || got == 0) min = sample; total += fabsf(sample); ++i; ++got; if (got == blockSize) { ranges.push_back(Range(min, max, total / got)); min = max = total = 0.0f; got = 0; } } m_directReadMutex.unlock(); if (got > 0) { ranges.push_back(Range(min, max, total / got)); } return; } else { QMutexLocker locker(&m_mutex); const RangeBlock &cache = m_cache[cacheType]; blockSize = roundedBlockSize; size_t cacheBlock, div; if (cacheType == 0) { cacheBlock = (1 << m_zoomConstraint.getMinCachePower()); div = (1 << power) / cacheBlock; } else { cacheBlock = ((unsigned int)((1 << m_zoomConstraint.getMinCachePower()) * sqrt(2) + 0.01)); div = ((unsigned int)((1 << power) * sqrt(2) + 0.01)) / cacheBlock; } size_t startIndex = start / cacheBlock; size_t endIndex = (start + count) / cacheBlock; float max = 0.0, min = 0.0, total = 0.0; size_t i = 0, got = 0; #ifdef DEBUG_WAVE_FILE_MODEL cerr << "blockSize is " << blockSize << ", cacheBlock " << cacheBlock << ", start " << start << ", count " << count << " (frame count " << getFrameCount() << "), power is " << power << ", div is " << div << ", startIndex " << startIndex << ", endIndex " << endIndex << endl; #endif for (i = 0; i <= endIndex - startIndex; ) { size_t index = (i + startIndex) * channels + channel; if (index >= cache.size()) break; const Range &range = cache[index]; if (range.max > max || got == 0) max = range.max; if (range.min < min || got == 0) min = range.min; total += range.absmean; ++i; ++got; if (got == div) { ranges.push_back(Range(min, max, total / got)); min = max = total = 0.0f; got = 0; } } if (got > 0) { ranges.push_back(Range(min, max, total / got)); } } #ifdef DEBUG_WAVE_FILE_MODEL cerr << "returning " << ranges.size() << " ranges" << endl; #endif return; } WaveFileModel::Range WaveFileModel::getSummary(size_t channel, size_t start, size_t count) const { Range range; if (!isOK()) return range; if (start > m_startFrame) start -= m_startFrame; else if (count <= m_startFrame - start) return range; else { count -= (m_startFrame - start); start = 0; } size_t blockSize; for (blockSize = 1; blockSize <= count; blockSize *= 2); if (blockSize > 1) blockSize /= 2; bool first = false; size_t blockStart = (start / blockSize) * blockSize; size_t blockEnd = ((start + count) / blockSize) * blockSize; if (blockStart < start) blockStart += blockSize; if (blockEnd > blockStart) { RangeBlock ranges; getSummaries(channel, blockStart, blockEnd - blockStart, ranges, blockSize); for (size_t i = 0; i < ranges.size(); ++i) { if (first || ranges[i].min < range.min) range.min = ranges[i].min; if (first || ranges[i].max > range.max) range.max = ranges[i].max; if (first || ranges[i].absmean < range.absmean) range.absmean = ranges[i].absmean; first = false; } } if (blockStart > start) { Range startRange = getSummary(channel, start, blockStart - start); range.min = std::min(range.min, startRange.min); range.max = std::max(range.max, startRange.max); range.absmean = std::min(range.absmean, startRange.absmean); } if (blockEnd < start + count) { Range endRange = getSummary(channel, blockEnd, start + count - blockEnd); range.min = std::min(range.min, endRange.min); range.max = std::max(range.max, endRange.max); range.absmean = std::min(range.absmean, endRange.absmean); } return range; } void WaveFileModel::fillCache() { m_mutex.lock(); m_updateTimer = new QTimer(this); connect(m_updateTimer, SIGNAL(timeout()), this, SLOT(fillTimerTimedOut())); m_updateTimer->start(100); m_fillThread = new RangeCacheFillThread(*this); connect(m_fillThread, SIGNAL(finished()), this, SLOT(cacheFilled())); m_mutex.unlock(); m_fillThread->start(); #ifdef DEBUG_WAVE_FILE_MODEL std::cerr << "WaveFileModel::fillCache: started fill thread" << std::endl; #endif } void WaveFileModel::fillTimerTimedOut() { if (m_fillThread) { size_t fillExtent = m_fillThread->getFillExtent(); #ifdef DEBUG_WAVE_FILE_MODEL cerr << "WaveFileModel::fillTimerTimedOut: extent = " << fillExtent << endl; #endif if (fillExtent > m_lastFillExtent) { emit modelChanged(m_lastFillExtent, fillExtent); m_lastFillExtent = fillExtent; } } else { #ifdef DEBUG_WAVE_FILE_MODEL cerr << "WaveFileModel::fillTimerTimedOut: no thread" << std::endl; #endif emit modelChanged(); } } void WaveFileModel::cacheFilled() { m_mutex.lock(); delete m_fillThread; m_fillThread = 0; delete m_updateTimer; m_updateTimer = 0; m_mutex.unlock(); if (getEndFrame() > m_lastFillExtent) { emit modelChanged(m_lastFillExtent, getEndFrame()); } emit modelChanged(); #ifdef DEBUG_WAVE_FILE_MODEL cerr << "WaveFileModel::cacheFilled" << endl; #endif } void WaveFileModel::RangeCacheFillThread::run() { size_t cacheBlockSize[2]; cacheBlockSize[0] = (1 << m_model.m_zoomConstraint.getMinCachePower()); cacheBlockSize[1] = ((unsigned int)((1 << m_model.m_zoomConstraint.getMinCachePower()) * sqrt(2) + 0.01)); size_t frame = 0; size_t readBlockSize = 16384; SampleBlock block; if (!m_model.isOK()) return; size_t channels = m_model.getChannelCount(); bool updating = m_model.m_reader->isUpdating(); if (updating) { while (channels == 0 && !m_model.m_exiting) { // std::cerr << "WaveFileModel::fill: Waiting for channels..." << std::endl; sleep(1); channels = m_model.getChannelCount(); } } Range *range = new Range[2 * channels]; size_t count[2]; count[0] = count[1] = 0; bool first = true; while (first || updating) { updating = m_model.m_reader->isUpdating(); m_frameCount = m_model.getFrameCount(); // std::cerr << "WaveFileModel::fill: frame = " << frame << ", count = " << m_frameCount << std::endl; while (frame < m_frameCount) { // std::cerr << "WaveFileModel::fill inner loop: frame = " << frame << ", count = " << m_frameCount << ", blocksize " << readBlockSize << std::endl; if (updating && (frame + readBlockSize > m_frameCount)) break; m_model.m_reader->getInterleavedFrames(frame, readBlockSize, block); // std::cerr << "block is " << block.size() << std::endl; for (size_t i = 0; i < readBlockSize; ++i) { if (channels * i + channels > block.size()) break; for (size_t ch = 0; ch < size_t(channels); ++ch) { size_t index = channels * i + ch; float sample = block[index]; for (size_t ct = 0; ct < 2; ++ct) { // cache type size_t rangeIndex = ch * 2 + ct; if (sample > range[rangeIndex].max || count[ct] == 0) { range[rangeIndex].max = sample; } if (sample < range[rangeIndex].min || count[ct] == 0) { range[rangeIndex].min = sample; } range[rangeIndex].absmean += fabsf(sample); } } QMutexLocker locker(&m_model.m_mutex); for (size_t ct = 0; ct < 2; ++ct) { if (++count[ct] == cacheBlockSize[ct]) { for (size_t ch = 0; ch < size_t(channels); ++ch) { size_t rangeIndex = ch * 2 + ct; range[rangeIndex].absmean /= count[ct]; m_model.m_cache[ct].push_back(range[rangeIndex]); range[rangeIndex] = Range(); } count[ct] = 0; } } ++frame; } if (m_model.m_exiting) break; m_fillExtent = frame; } // std::cerr << "WaveFileModel: inner loop ended" << std::endl; first = false; if (m_model.m_exiting) break; if (updating) { // std::cerr << "sleeping..." << std::endl; sleep(1); } } if (!m_model.m_exiting) { QMutexLocker locker(&m_model.m_mutex); for (size_t ct = 0; ct < 2; ++ct) { if (count[ct] > 0) { for (size_t ch = 0; ch < size_t(channels); ++ch) { size_t rangeIndex = ch * 2 + ct; range[rangeIndex].absmean /= count[ct]; m_model.m_cache[ct].push_back(range[rangeIndex]); range[rangeIndex] = Range(); } count[ct] = 0; } const Range &rr = *m_model.m_cache[ct].begin(); MUNLOCK(&rr, m_model.m_cache[ct].capacity() * sizeof(Range)); } } delete[] range; m_fillExtent = m_frameCount; #ifdef DEBUG_WAVE_FILE_MODEL for (size_t ct = 0; ct < 2; ++ct) { cerr << "Cache type " << ct << " now contains " << m_model.m_cache[ct].size() << " ranges" << endl; } #endif } void WaveFileModel::toXml(QTextStream &out, QString indent, QString extraAttributes) const { Model::toXml(out, indent, QString("type=\"wavefile\" file=\"%1\" %2") .arg(encodeEntities(m_path)).arg(extraAttributes)); }