Mercurial > hg > svcore
view data/fileio/WavFileWriter.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 | 91fdc752e540 |
children | 5877d68815c7 |
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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 "WavFileWriter.h" #include "model/DenseTimeValueModel.h" #include "base/Selection.h" #include <QFileInfo> #include <iostream> WavFileWriter::WavFileWriter(QString path, size_t sampleRate, size_t channels) : m_path(path), m_sampleRate(sampleRate), m_channels(channels), m_file(0) { SF_INFO fileInfo; fileInfo.samplerate = m_sampleRate; fileInfo.channels = m_channels; fileInfo.format = SF_FORMAT_WAV | SF_FORMAT_FLOAT; m_file = sf_open(m_path.toLocal8Bit(), SFM_WRITE, &fileInfo); if (!m_file) { std::cerr << "WavFileWriter: Failed to open file (" << sf_strerror(m_file) << ")" << std::endl; m_error = QString("Failed to open audio file '%1' for writing") .arg(m_path); } } WavFileWriter::~WavFileWriter() { if (m_file) close(); } bool WavFileWriter::isOK() const { return (m_error.isEmpty()); } QString WavFileWriter::getError() const { return m_error; } bool WavFileWriter::writeModel(DenseTimeValueModel *source, MultiSelection *selection) { if (source->getChannelCount() != m_channels) { std::cerr << "WavFileWriter::writeModel: Wrong number of channels (" << source->getChannelCount() << " != " << m_channels << ")" << std::endl; m_error = QString("Failed to write model to audio file '%1'") .arg(m_path); return false; } if (!m_file) { m_error = QString("Failed to write model to audio file '%1': File not open") .arg(m_path); return false; } bool ownSelection = false; if (!selection) { selection = new MultiSelection; selection->setSelection(Selection(source->getStartFrame(), source->getEndFrame())); ownSelection = true; } size_t bs = 2048; float *ub = new float[bs]; // uninterleaved buffer (one channel) float *ib = new float[bs * m_channels]; // interleaved buffer for (MultiSelection::SelectionList::iterator i = selection->getSelections().begin(); i != selection->getSelections().end(); ++i) { size_t f0(i->getStartFrame()), f1(i->getEndFrame()); for (size_t f = f0; f < f1; f += bs) { size_t n = std::min(bs, f1 - f); for (int c = 0; c < int(m_channels); ++c) { source->getValues(c, f, f + n, ub); for (size_t i = 0; i < n; ++i) { ib[i * m_channels + c] = ub[i]; } } sf_count_t written = sf_writef_float(m_file, ib, n); if (written < n) { m_error = QString("Only wrote %1 of %2 frames at file frame %3") .arg(written).arg(n).arg(f); break; } } } delete[] ub; delete[] ib; if (ownSelection) delete selection; return isOK(); } bool WavFileWriter::writeSamples(float **samples, size_t count) { if (!m_file) { m_error = QString("Failed to write model to audio file '%1': File not open") .arg(m_path); return false; } float *b = new float[count * m_channels]; for (size_t i = 0; i < count; ++i) { for (size_t c = 0; c < m_channels; ++c) { b[i * m_channels + c] = samples[c][i]; } } sf_count_t written = sf_writef_float(m_file, b, count); delete[] b; if (written < count) { m_error = QString("Only wrote %1 of %2 frames") .arg(written).arg(count); } return isOK(); } bool WavFileWriter::close() { if (m_file) { sf_close(m_file); m_file = 0; } return true; }