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