Mercurial > hg > svcore
view data/fileio/WavFileWriter.cpp @ 1514:b7042aaecebe import-audio-data
Comments
author | Chris Cannam |
---|---|
date | Fri, 07 Sep 2018 16:13:48 +0100 |
parents | b837ccdd4946 |
children | 954d0cf29ca7 |
line wrap: on
line source
/* -*- 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 "base/TempWriteFile.h" #include "base/Exceptions.h" #include "base/Debug.h" #include <QFileInfo> #include <iostream> #include <cmath> #include <string> using namespace std; WavFileWriter::WavFileWriter(QString path, sv_samplerate_t sampleRate, int channels, FileWriteMode mode) : m_path(path), m_sampleRate(sampleRate), m_channels(channels), m_temp(0), m_file(0) { SF_INFO fileInfo; int fileRate = int(round(m_sampleRate)); if (m_sampleRate != sv_samplerate_t(fileRate)) { SVCERR << "WavFileWriter: WARNING: Non-integer sample rate " << m_sampleRate << " presented, rounding to " << fileRate << endl; } fileInfo.samplerate = fileRate; fileInfo.channels = m_channels; fileInfo.format = SF_FORMAT_WAV | SF_FORMAT_FLOAT; try { QString writePath = m_path; if (mode == WriteToTemporary) { m_temp = new TempWriteFile(m_path); writePath = m_temp->getTemporaryFilename(); } #ifdef Q_OS_WIN m_file = sf_wchar_open((LPCWSTR)writePath.utf16(), SFM_WRITE, &fileInfo); #else m_file = sf_open(writePath.toLocal8Bit(), SFM_WRITE, &fileInfo); #endif if (!m_file) { SVCERR << "WavFileWriter: Failed to create float-WAV file of " << m_channels << " channels at rate " << fileRate << " (" << sf_strerror(m_file) << ")" << endl; m_error = QString("Failed to open audio file '%1' for writing") .arg(writePath); if (m_temp) { delete m_temp; m_temp = 0; } } } catch (FileOperationFailed &f) { m_error = f.what(); m_temp = 0; m_file = 0; } } WavFileWriter::~WavFileWriter() { if (m_file) close(); } bool WavFileWriter::isOK() const { return (m_error.isEmpty()); } QString WavFileWriter::getError() const { return m_error; } QString WavFileWriter::getWriteFilename() const { if (m_temp) { return m_temp->getTemporaryFilename(); } else { return m_path; } } bool WavFileWriter::writeModel(DenseTimeValueModel *source, MultiSelection *selection) { if (source->getChannelCount() != m_channels) { SVDEBUG << "WavFileWriter::writeModel: Wrong number of channels (" << source->getChannelCount() << " != " << m_channels << ")" << endl; m_error = QString("Failed to write model to audio file '%1'") .arg(getWriteFilename()); return false; } if (!m_file) { m_error = QString("Failed to write model to audio file '%1': File not open") .arg(getWriteFilename()); return false; } bool ownSelection = false; if (!selection) { selection = new MultiSelection; selection->setSelection(Selection(source->getStartFrame(), source->getEndFrame())); ownSelection = true; } sv_frame_t bs = 2048; for (MultiSelection::SelectionList::iterator i = selection->getSelections().begin(); i != selection->getSelections().end(); ++i) { sv_frame_t f0(i->getStartFrame()), f1(i->getEndFrame()); for (sv_frame_t f = f0; f < f1; f += bs) { sv_frame_t n = min(bs, f1 - f); floatvec_t interleaved(n * m_channels, 0.f); for (int c = 0; c < int(m_channels); ++c) { auto chanbuf = source->getData(c, f, n); for (int i = 0; in_range_for(chanbuf, i); ++i) { interleaved[i * m_channels + c] = chanbuf[i]; } } sf_count_t written = sf_writef_float(m_file, interleaved.data(), n); if (written < n) { m_error = QString("Only wrote %1 of %2 frames at file frame %3") .arg(written).arg(n).arg(f); break; } } } if (ownSelection) delete selection; return isOK(); } bool WavFileWriter::writeSamples(const float *const *samples, sv_frame_t count) { if (!m_file) { m_error = QString("Failed to write model to audio file '%1': File not open") .arg(getWriteFilename()); return false; } float *b = new float[count * m_channels]; for (sv_frame_t i = 0; i < count; ++i) { for (int c = 0; c < int(m_channels); ++c) { b[i * m_channels + c] = samples[c][i]; } } sv_frame_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; } if (m_temp) { m_temp->moveToTarget(); delete m_temp; m_temp = 0; } return true; }