Mercurial > hg > svcore
view data/fileio/CodedAudioFileReader.cpp @ 299:576be0d0d218
* Merge transform directory from sv-match-alignment branch
(the previous comment included notes for this stuff, but I missed it
in the actual merge)
* Fix crash when a transform fails to create an output model and the
thread that created the transform then deletes its input model thinking
it's no longer needed, even though the transform run thread is still
using it -- fix is to wait() on the transform before returning the
null output model
author | Chris Cannam |
---|---|
date | Fri, 28 Sep 2007 16:15:06 +0000 |
parents | c022976d18e8 |
children | 4fc6f49436b3 |
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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 2006-2007 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 "CodedAudioFileReader.h" #include "WavFileReader.h" #include "base/TempDirectory.h" #include "base/Exceptions.h" #include "base/Profiler.h" #include "base/Serialiser.h" #include "base/Resampler.h" #include <iostream> #include <QDir> #include <QMutexLocker> CodedAudioFileReader::CodedAudioFileReader(CacheMode cacheMode, size_t targetRate) : m_cacheMode(cacheMode), m_initialised(false), m_serialiser(0), m_fileRate(0), m_cacheFileWritePtr(0), m_cacheFileReader(0), m_cacheWriteBuffer(0), m_cacheWriteBufferIndex(0), m_cacheWriteBufferSize(16384), m_resampler(0), m_resampleBuffer(0) { std::cerr << "CodedAudioFileReader::CodedAudioFileReader: rate " << targetRate << std::endl; m_frameCount = 0; m_sampleRate = targetRate; } CodedAudioFileReader::~CodedAudioFileReader() { QMutexLocker locker(&m_cacheMutex); endSerialised(); if (m_cacheFileWritePtr) sf_close(m_cacheFileWritePtr); delete m_cacheFileReader; delete[] m_cacheWriteBuffer; if (m_cacheFileName != "") { if (!QFile(m_cacheFileName).remove()) { std::cerr << "WARNING: CodedAudioFileReader::~CodedAudioFileReader: Failed to delete cache file \"" << m_cacheFileName.toStdString() << "\"" << std::endl; } } delete m_resampler; delete[] m_resampleBuffer; } void CodedAudioFileReader::startSerialised(QString id) { // std::cerr << "CodedAudioFileReader::startSerialised(" << id.toStdString() << ")" << std::endl; delete m_serialiser; m_serialiser = new Serialiser(id); } void CodedAudioFileReader::endSerialised() { // std::cerr << "CodedAudioFileReader::endSerialised" << std::endl; delete m_serialiser; m_serialiser = 0; } void CodedAudioFileReader::initialiseDecodeCache() { QMutexLocker locker(&m_cacheMutex); std::cerr << "CodedAudioFileReader::initialiseDecodeCache: file rate = " << m_fileRate << std::endl; if (m_fileRate == 0) { std::cerr << "CodedAudioFileReader::initialiseDecodeCache: ERROR: File sample rate unknown (bug in subclass implementation?)" << std::endl; m_fileRate = 48000; // got to have something } if (m_sampleRate == 0) { m_sampleRate = m_fileRate; } if (m_fileRate != m_sampleRate) { std::cerr << "CodedAudioFileReader: resampling " << m_fileRate << " -> " << m_sampleRate << std::endl; m_resampler = new Resampler(Resampler::FastestTolerable, m_channelCount, m_cacheWriteBufferSize); float ratio = float(m_sampleRate) / float(m_fileRate); m_resampleBuffer = new float [lrintf(ceilf(m_cacheWriteBufferSize * m_channelCount * ratio))]; } m_cacheWriteBuffer = new float[m_cacheWriteBufferSize * m_channelCount]; m_cacheWriteBufferIndex = 0; if (m_cacheMode == CacheInTemporaryFile) { try { QDir dir(TempDirectory::getInstance()->getPath()); m_cacheFileName = dir.filePath(QString("decoded_%1.wav") .arg((intptr_t)this)); SF_INFO fileInfo; fileInfo.samplerate = m_sampleRate; fileInfo.channels = m_channelCount; // No point in writing 24-bit or float; generally this // class is used for decoding files that have come from a // 16 bit source or that decode to only 16 bits anyway. fileInfo.format = SF_FORMAT_WAV | SF_FORMAT_PCM_16; m_cacheFileWritePtr = sf_open(m_cacheFileName.toLocal8Bit(), SFM_WRITE, &fileInfo); if (m_cacheFileWritePtr) { // Ideally we would do this now only if we were in a // threaded mode -- creating the reader later if we're // not threaded -- but we don't have access to that // information here m_cacheFileReader = new WavFileReader(m_cacheFileName); if (!m_cacheFileReader->isOK()) { std::cerr << "ERROR: CodedAudioFileReader::initialiseDecodeCache: Failed to construct WAV file reader for temporary file: " << m_cacheFileReader->getError().toStdString() << std::endl; delete m_cacheFileReader; m_cacheFileReader = 0; m_cacheMode = CacheInMemory; sf_close(m_cacheFileWritePtr); } } else { std::cerr << "CodedAudioFileReader::initialiseDecodeCache: failed to open cache file \"" << m_cacheFileName.toStdString() << "\" (" << m_channelCount << " channels, sample rate " << m_sampleRate << " for writing, falling back to in-memory cache" << std::endl; m_cacheMode = CacheInMemory; } } catch (DirectoryCreationFailed f) { std::cerr << "CodedAudioFileReader::initialiseDecodeCache: failed to create temporary directory! Falling back to in-memory cache" << std::endl; m_cacheMode = CacheInMemory; } } if (m_cacheMode == CacheInMemory) { m_data.clear(); } m_initialised = true; } void CodedAudioFileReader::addSamplesToDecodeCache(float **samples, size_t nframes) { QMutexLocker locker(&m_cacheMutex); if (!m_initialised) return; for (size_t i = 0; i < nframes; ++i) { for (size_t c = 0; c < m_channelCount; ++c) { float sample = samples[c][i]; m_cacheWriteBuffer[m_cacheWriteBufferIndex++] = sample; if (m_cacheWriteBufferIndex == m_cacheWriteBufferSize * m_channelCount) { pushBuffer(m_cacheWriteBuffer, m_cacheWriteBufferSize, false); m_cacheWriteBufferIndex = 0; } if (m_cacheWriteBufferIndex % 10240 == 0 && m_cacheFileReader) { m_cacheFileReader->updateFrameCount(); } } } } void CodedAudioFileReader::addSamplesToDecodeCache(float *samples, size_t nframes) { QMutexLocker locker(&m_cacheMutex); if (!m_initialised) return; for (size_t i = 0; i < nframes; ++i) { for (size_t c = 0; c < m_channelCount; ++c) { float sample = samples[i * m_channelCount + c]; m_cacheWriteBuffer[m_cacheWriteBufferIndex++] = sample; if (m_cacheWriteBufferIndex == m_cacheWriteBufferSize * m_channelCount) { pushBuffer(m_cacheWriteBuffer, m_cacheWriteBufferSize, false); m_cacheWriteBufferIndex = 0; } if (m_cacheWriteBufferIndex % 10240 == 0 && m_cacheFileReader) { m_cacheFileReader->updateFrameCount(); } } } } void CodedAudioFileReader::addSamplesToDecodeCache(const SampleBlock &samples) { QMutexLocker locker(&m_cacheMutex); if (!m_initialised) return; for (size_t i = 0; i < samples.size(); ++i) { float sample = samples[i]; m_cacheWriteBuffer[m_cacheWriteBufferIndex++] = sample; if (m_cacheWriteBufferIndex == m_cacheWriteBufferSize * m_channelCount) { pushBuffer(m_cacheWriteBuffer, m_cacheWriteBufferSize, false); m_cacheWriteBufferIndex = 0; } if (m_cacheWriteBufferIndex % 10240 == 0 && m_cacheFileReader) { m_cacheFileReader->updateFrameCount(); } } } void CodedAudioFileReader::finishDecodeCache() { QMutexLocker locker(&m_cacheMutex); Profiler profiler("CodedAudioFileReader::finishDecodeCache", true); if (!m_initialised) { std::cerr << "WARNING: CodedAudioFileReader::finishDecodeCache: Cache was never initialised!" << std::endl; return; } if (m_cacheWriteBufferIndex > 0) { //!!! check for return value! out of disk space, etc! pushBuffer(m_cacheWriteBuffer, m_cacheWriteBufferIndex / m_channelCount, true); } delete[] m_cacheWriteBuffer; m_cacheWriteBuffer = 0; delete[] m_resampleBuffer; m_resampleBuffer = 0; delete m_resampler; m_resampler = 0; if (m_cacheMode == CacheInTemporaryFile) { sf_close(m_cacheFileWritePtr); m_cacheFileWritePtr = 0; if (m_cacheFileReader) m_cacheFileReader->updateFrameCount(); } } void CodedAudioFileReader::pushBuffer(float *buffer, size_t sz, bool final) { if (m_resampler) { float ratio = float(m_sampleRate) / float(m_fileRate); if (ratio != 1.f) { size_t out = m_resampler->resampleInterleaved (buffer, m_resampleBuffer, sz, ratio, final); buffer = m_resampleBuffer; sz = out; } } m_frameCount += sz; switch (m_cacheMode) { case CacheInTemporaryFile: //!!! check for return value! out of disk space, etc! sf_writef_float(m_cacheFileWritePtr, buffer, sz); break; case CacheInMemory: for (size_t s = 0; s < sz; ++s) { m_data.push_back(buffer[sz]); } MUNLOCK_SAMPLEBLOCK(m_data); break; } } void CodedAudioFileReader::getInterleavedFrames(size_t start, size_t count, SampleBlock &frames) const { //!!! we want to ensure this doesn't require a lock -- at the // moment it does need one, but it doesn't have one... if (!m_initialised) { std::cerr << "CodedAudioFileReader::getInterleavedFrames: not initialised" << std::endl; return; } switch (m_cacheMode) { case CacheInTemporaryFile: if (m_cacheFileReader) { m_cacheFileReader->getInterleavedFrames(start, count, frames); } break; case CacheInMemory: { frames.clear(); if (!isOK()) return; if (count == 0) return; // slownessabounds for (size_t i = start; i < start + count; ++i) { for (size_t ch = 0; ch < m_channelCount; ++ch) { size_t index = i * m_channelCount + ch; if (index >= m_data.size()) return; frames.push_back(m_data[index]); } } } } }