Mercurial > hg > svcore
view data/fileio/WavFileReader.cpp @ 348:edda24bb85fc
* Skip ID3 block when reading MP3 files (so long as ID3 support is included)
* Show progress when retrieving audio file from playlist
* Avoid -- but do not actually fix -- segmentation fault on exit. I am
totally stumped at the moment about why both the PA and JACK audio targets
should crash when properly shut down. For the moment, we just don't shut
them down...
* Fix incorrect behaviour (introduced on Friday as part of a different fix)
when replacing main model in situation where no current main model exists
author | Chris Cannam |
---|---|
date | Fri, 30 Nov 2007 17:31:09 +0000 |
parents | c324d410b096 |
children | 166c22eff678 |
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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 "WavFileReader.h" #include <iostream> #include <QMutexLocker> #include <QFileInfo> WavFileReader::WavFileReader(FileSource source, bool fileUpdating) : m_file(0), m_source(source), m_path(source.getLocalFilename()), m_buffer(0), m_bufsiz(0), m_lastStart(0), m_lastCount(0), m_updating(fileUpdating) { m_frameCount = 0; m_channelCount = 0; m_sampleRate = 0; m_fileInfo.format = 0; m_fileInfo.frames = 0; m_file = sf_open(m_path.toLocal8Bit(), SFM_READ, &m_fileInfo); if (!m_file || (!fileUpdating && m_fileInfo.channels <= 0)) { std::cerr << "WavFileReader::initialize: Failed to open file (" << sf_strerror(m_file) << ")" << std::endl; if (m_file) { m_error = QString("Couldn't load audio file '%1':\n%2") .arg(m_path).arg(sf_strerror(m_file)); } else { m_error = QString("Failed to open audio file '%1'") .arg(m_path); } return; } if (m_fileInfo.channels > 0) { m_frameCount = m_fileInfo.frames; m_channelCount = m_fileInfo.channels; m_sampleRate = m_fileInfo.samplerate; } // std::cerr << "WavFileReader: Frame count " << m_frameCount << ", channel count " << m_channelCount << ", sample rate " << m_sampleRate << std::endl; } WavFileReader::~WavFileReader() { if (m_file) sf_close(m_file); } void WavFileReader::updateFrameCount() { QMutexLocker locker(&m_mutex); size_t prevCount = m_fileInfo.frames; if (m_file) { sf_close(m_file); m_file = sf_open(m_path.toLocal8Bit(), SFM_READ, &m_fileInfo); if (!m_file || m_fileInfo.channels <= 0) { std::cerr << "WavFileReader::updateFrameCount: Failed to open file (" << sf_strerror(m_file) << ")" << std::endl; } } // std::cerr << "WavFileReader::updateFrameCount: now " << m_fileInfo.frames << std::endl; m_frameCount = m_fileInfo.frames; if (m_channelCount == 0) { m_channelCount = m_fileInfo.channels; m_sampleRate = m_fileInfo.samplerate; } if (m_frameCount != prevCount) { // std::cerr << "frameCountChanged" << std::endl; emit frameCountChanged(); } } void WavFileReader::updateDone() { updateFrameCount(); m_updating = false; } void WavFileReader::getInterleavedFrames(size_t start, size_t count, SampleBlock &results) const { if (count == 0) return; results.clear(); QMutexLocker locker(&m_mutex); if (!m_file || !m_channelCount) { return; } if ((long)start >= m_fileInfo.frames) { // std::cerr << "WavFileReader::getInterleavedFrames: " << start // << " > " << m_fileInfo.frames << std::endl; return; } if (long(start + count) > m_fileInfo.frames) { count = m_fileInfo.frames - start; } sf_count_t readCount = 0; if (start != m_lastStart || count != m_lastCount) { if (sf_seek(m_file, start, SEEK_SET) < 0) { // std::cerr << "sf_seek failed" << std::endl; return; } if (count * m_fileInfo.channels > m_bufsiz) { // std::cerr << "WavFileReader: Reallocating buffer for " << count // << " frames, " << m_fileInfo.channels << " channels: " // << m_bufsiz << " floats" << std::endl; m_bufsiz = count * m_fileInfo.channels; delete[] m_buffer; m_buffer = new float[m_bufsiz]; } if ((readCount = sf_readf_float(m_file, m_buffer, count)) < 0) { // std::cerr << "sf_readf_float failed" << std::endl; return; } m_lastStart = start; m_lastCount = readCount; } for (size_t i = 0; i < count * m_fileInfo.channels; ++i) { if (i >= m_bufsiz) { std::cerr << "INTERNAL ERROR: WavFileReader::getInterleavedFrames: " << i << " >= " << m_bufsiz << std::endl; } results.push_back(m_buffer[i]); } return; } void WavFileReader::getSupportedExtensions(std::set<QString> &extensions) { int count; if (sf_command(0, SFC_GET_FORMAT_MAJOR_COUNT, &count, sizeof(count))) { extensions.insert("wav"); extensions.insert("aiff"); extensions.insert("aifc"); extensions.insert("aif"); return; } SF_FORMAT_INFO info; for (int i = 0; i < count; ++i) { info.format = i; if (!sf_command(0, SFC_GET_FORMAT_MAJOR, &info, sizeof(info))) { extensions.insert(QString(info.extension).toLower()); } } } bool WavFileReader::supportsExtension(QString extension) { std::set<QString> extensions; getSupportedExtensions(extensions); return (extensions.find(extension.toLower()) != extensions.end()); } bool WavFileReader::supportsContentType(QString type) { return (type == "audio/x-wav" || type == "audio/x-aiff" || type == "audio/basic"); } bool WavFileReader::supports(FileSource &source) { return (supportsExtension(source.getExtension()) || supportsContentType(source.getContentType())); }