126 lines
3.1 KiB
C++
126 lines
3.1 KiB
C++
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/*
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Audio File Library
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Copyright (C) 2010-2012, Michael Pruett <michael@68k.org>
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with this library; if not, write to the
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Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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Boston, MA 02110-1301 USA
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*/
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#include "config.h"
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#include "FileModule.h"
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#include "File.h"
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#include "Track.h"
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#include <errno.h>
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#include <string.h>
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FileModule::FileModule(Mode mode, Track *track, File *fh, bool canSeek) :
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m_mode(mode),
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m_track(track),
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m_fh(fh),
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m_canSeek(canSeek)
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{
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track->fpos_next_frame = track->fpos_first_frame;
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track->frames2ignore = 0;
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}
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ssize_t FileModule::read(void *data, size_t nbytes)
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{
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ssize_t bytesRead = m_fh->read(data, nbytes);
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if (bytesRead > 0)
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{
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m_track->fpos_next_frame += bytesRead;
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}
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return bytesRead;
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}
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ssize_t FileModule::write(const void *data, size_t nbytes)
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{
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ssize_t bytesWritten = m_fh->write(data, nbytes);
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if (bytesWritten > 0)
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{
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m_track->fpos_next_frame += bytesWritten;
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m_track->data_size += bytesWritten;
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}
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return bytesWritten;
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}
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off_t FileModule::seek(off_t offset)
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{
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return m_fh->seek(offset, File::SeekFromBeginning);
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}
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off_t FileModule::tell()
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{
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return m_fh->tell();
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}
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off_t FileModule::length()
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{
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return m_fh->length();
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}
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void FileModule::reportReadError(AFframecount framesRead,
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AFframecount framesToRead)
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{
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// Report error if we haven't already.
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if (!m_track->filemodhappy)
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return;
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_af_error(AF_BAD_READ,
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"file missing data -- read %jd frames, should be %jd",
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static_cast<intmax_t>(m_track->nextfframe),
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static_cast<intmax_t>(m_track->totalfframes));
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m_track->filemodhappy = false;
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}
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void FileModule::reportWriteError(AFframecount framesWritten,
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AFframecount framesToWrite)
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{
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// Report error if we haven't already.
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if (!m_track->filemodhappy)
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return;
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if (framesWritten < 0)
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{
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// Signal I/O error.
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_af_error(AF_BAD_WRITE,
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"unable to write data (%s) -- wrote %jd out of %jd frames",
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strerror(errno),
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static_cast<intmax_t>(m_track->nextfframe),
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static_cast<intmax_t>(m_track->nextfframe + framesToWrite));
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}
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else
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{
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// Signal disk full error.
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_af_error(AF_BAD_WRITE,
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"unable to write data (disk full) -- "
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"wrote %jd out of %jd frames",
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static_cast<intmax_t>(m_track->nextfframe + framesWritten),
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static_cast<intmax_t>(m_track->nextfframe + framesToWrite));
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}
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m_track->filemodhappy = false;
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}
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int FileModule::bufferSize() const
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{
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if (mode() == Compress)
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return outChunk()->frameCount * inChunk()->f.bytesPerFrame(true);
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else
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return inChunk()->frameCount * outChunk()->f.bytesPerFrame(true);
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}
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