sm64pc/tools/audiofile-0.3.6/libaudiofile/openclose.cpp

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2020-05-05 12:15:53 +00:00
/*
Audio File Library
Copyright (C) 2000-2001, Silicon Graphics, Inc.
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 <stdlib.h>
#include <assert.h>
#include <string.h>
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#include <audiofile.h>
#include "File.h"
#include "FileHandle.h"
#include "Instrument.h"
#include "Marker.h"
#include "Setup.h"
#include "Track.h"
#include "afinternal.h"
#include "modules/Module.h"
#include "modules/ModuleState.h"
#include "units.h"
#include "util.h"
static status _afOpenFile (int access, File *f, const char *filename,
AFfilehandle *file, AFfilesetup filesetup);
int _af_identify (File *f, int *implemented)
{
if (!f->canSeek())
{
_af_error(AF_BAD_LSEEK, "Cannot seek in file");
return AF_FILE_UNKNOWN;
}
AFfileoffset curpos = f->tell();
for (int i=0; i<_AF_NUM_UNITS; i++)
{
if (_af_units[i].recognize &&
_af_units[i].recognize(f))
{
if (implemented != NULL)
*implemented = _af_units[i].implemented;
f->seek(curpos, File::SeekFromBeginning);
return _af_units[i].fileFormat;
}
}
f->seek(curpos, File::SeekFromBeginning);
if (implemented != NULL)
*implemented = false;
return AF_FILE_UNKNOWN;
}
int afIdentifyFD (int fd)
{
/*
Duplicate the file descriptor since otherwise the
original file descriptor would get closed when we close
the virtual file below.
*/
fd = dup(fd);
File *f = File::create(fd, File::ReadAccess);
int result = _af_identify(f, NULL);
delete f;
return result;
}
int afIdentifyNamedFD (int fd, const char *filename, int *implemented)
{
/*
Duplicate the file descriptor since otherwise the
original file descriptor would get closed when we close
the virtual file below.
*/
fd = dup(fd);
File *f = File::create(fd, File::ReadAccess);
if (!f)
{
_af_error(AF_BAD_OPEN, "could not open file '%s'", filename);
return AF_FILE_UNKNOWN;
}
int result = _af_identify(f, implemented);
delete f;
return result;
}
AFfilehandle afOpenFD (int fd, const char *mode, AFfilesetup setup)
{
if (!mode)
{
_af_error(AF_BAD_ACCMODE, "null access mode");
return AF_NULL_FILEHANDLE;
}
int access;
if (mode[0] == 'r')
{
access = _AF_READ_ACCESS;
}
else if (mode[0] == 'w')
{
access = _AF_WRITE_ACCESS;
}
else
{
_af_error(AF_BAD_ACCMODE, "unrecognized access mode '%s'", mode);
return AF_NULL_FILEHANDLE;
}
File *f = File::create(fd, access == _AF_READ_ACCESS ?
File::ReadAccess : File::WriteAccess);
AFfilehandle filehandle = NULL;
if (_afOpenFile(access, f, NULL, &filehandle, setup) != AF_SUCCEED)
{
delete f;
}
return filehandle;
}
AFfilehandle afOpenNamedFD (int fd, const char *mode, AFfilesetup setup,
const char *filename)
{
if (!mode)
{
_af_error(AF_BAD_ACCMODE, "null access mode");
return AF_NULL_FILEHANDLE;
}
int access;
if (mode[0] == 'r')
access = _AF_READ_ACCESS;
else if (mode[0] == 'w')
access = _AF_WRITE_ACCESS;
else
{
_af_error(AF_BAD_ACCMODE, "unrecognized access mode '%s'", mode);
return AF_NULL_FILEHANDLE;
}
File *f = File::create(fd, access == _AF_READ_ACCESS ?
File::ReadAccess : File::WriteAccess);
AFfilehandle filehandle;
if (_afOpenFile(access, f, filename, &filehandle, setup) != AF_SUCCEED)
{
delete f;
}
return filehandle;
}
AFfilehandle afOpenFile (const char *filename, const char *mode, AFfilesetup setup)
{
if (!mode)
{
_af_error(AF_BAD_ACCMODE, "null access mode");
return AF_NULL_FILEHANDLE;
}
int access;
if (mode[0] == 'r')
{
access = _AF_READ_ACCESS;
}
else if (mode[0] == 'w')
{
access = _AF_WRITE_ACCESS;
}
else
{
_af_error(AF_BAD_ACCMODE, "unrecognized access mode '%s'", mode);
return AF_NULL_FILEHANDLE;
}
File *f = File::open(filename,
access == _AF_READ_ACCESS ? File::ReadAccess : File::WriteAccess);
if (!f)
{
_af_error(AF_BAD_OPEN, "could not open file '%s'", filename);
return AF_NULL_FILEHANDLE;
}
AFfilehandle filehandle;
if (_afOpenFile(access, f, filename, &filehandle, setup) != AF_SUCCEED)
{
delete f;
}
return filehandle;
}
AFfilehandle afOpenVirtualFile (AFvirtualfile *vf, const char *mode,
AFfilesetup setup)
{
if (!vf)
{
_af_error(AF_BAD_OPEN, "null virtual file");
return AF_NULL_FILEHANDLE;
}
if (!mode)
{
_af_error(AF_BAD_ACCMODE, "null access mode");
return AF_NULL_FILEHANDLE;
}
int access;
if (mode[0] == 'r')
{
access = _AF_READ_ACCESS;
}
else if (mode[0] == 'w')
{
access = _AF_WRITE_ACCESS;
}
else
{
_af_error(AF_BAD_ACCMODE, "unrecognized access mode '%s'", mode);
return AF_NULL_FILEHANDLE;
}
File *f = File::create(vf,
access == _AF_READ_ACCESS ? File::ReadAccess : File::WriteAccess);
if (!f)
{
_af_error(AF_BAD_OPEN, "could not open virtual file");
return AF_NULL_FILEHANDLE;
}
AFfilehandle filehandle;
if (_afOpenFile(access, f, NULL, &filehandle, setup) != AF_SUCCEED)
{
delete f;
}
return filehandle;
}
static status _afOpenFile (int access, File *f, const char *filename,
AFfilehandle *file, AFfilesetup filesetup)
{
int fileFormat = AF_FILE_UNKNOWN;
int implemented = true;
int userSampleFormat = 0;
double userSampleRate = 0.0;
PCMInfo userPCM = {0};
bool userFormatSet = false;
AFfilehandle filehandle = AF_NULL_FILEHANDLE;
AFfilesetup completesetup = AF_NULL_FILESETUP;
*file = AF_NULL_FILEHANDLE;
if (access == _AF_WRITE_ACCESS || filesetup != AF_NULL_FILESETUP)
{
if (!_af_filesetup_ok(filesetup))
return AF_FAIL;
fileFormat = filesetup->fileFormat;
if (access == _AF_READ_ACCESS && fileFormat != AF_FILE_RAWDATA)
{
_af_error(AF_BAD_FILESETUP,
"warning: opening file for read access: "
"ignoring file setup with non-raw file format");
filesetup = AF_NULL_FILESETUP;
fileFormat = _af_identify(f, &implemented);
}
}
else if (filesetup == AF_NULL_FILESETUP)
fileFormat = _af_identify(f, &implemented);
if (fileFormat == AF_FILE_UNKNOWN)
{
if (filename != NULL)
_af_error(AF_BAD_NOT_IMPLEMENTED,
"'%s': unrecognized audio file format",
filename);
else
_af_error(AF_BAD_NOT_IMPLEMENTED,
"unrecognized audio file format");
return AF_FAIL;
}
const char *formatName = _af_units[fileFormat].name;
if (!implemented)
{
_af_error(AF_BAD_NOT_IMPLEMENTED,
"%s format not currently supported", formatName);
}
completesetup = NULL;
if (filesetup != AF_NULL_FILESETUP)
{
userSampleFormat = filesetup->tracks[0].f.sampleFormat;
userPCM = filesetup->tracks[0].f.pcm;
userSampleRate = filesetup->tracks[0].f.sampleRate;
userFormatSet = true;
if ((completesetup = _af_units[fileFormat].completesetup(filesetup)) == NULL)
return AF_FAIL;
}
filehandle = _AFfilehandle::create(fileFormat);
if (!filehandle)
{
if (completesetup)
afFreeFileSetup(completesetup);
return AF_FAIL;
}
filehandle->m_fh = f;
filehandle->m_access = access;
filehandle->m_seekok = f->canSeek();
if (filename != NULL)
filehandle->m_fileName = strdup(filename);
else
filehandle->m_fileName = NULL;
filehandle->m_fileFormat = fileFormat;
status result = access == _AF_READ_ACCESS ?
filehandle->readInit(completesetup) :
filehandle->writeInit(completesetup);
if (result != AF_SUCCEED)
{
delete filehandle;
filehandle = AF_NULL_FILEHANDLE;
if (completesetup)
afFreeFileSetup(completesetup);
return AF_FAIL;
}
if (completesetup)
afFreeFileSetup(completesetup);
/*
Initialize virtual format.
*/
for (int t=0; t<filehandle->m_trackCount; t++)
{
Track *track = &filehandle->m_tracks[t];
track->v = track->f;
if (userFormatSet)
{
track->v.sampleFormat = userSampleFormat;
track->v.pcm = userPCM;
track->v.sampleRate = userSampleRate;
}
track->v.compressionType = AF_COMPRESSION_NONE;
track->v.compressionParams = NULL;
#if WORDS_BIGENDIAN
track->v.byteOrder = AF_BYTEORDER_BIGENDIAN;
#else
track->v.byteOrder = AF_BYTEORDER_LITTLEENDIAN;
#endif
track->ms = new ModuleState();
if (track->ms->init(filehandle, track) == AF_FAIL)
{
delete filehandle;
return AF_FAIL;
}
}
*file = filehandle;
return AF_SUCCEED;
}
int afSyncFile (AFfilehandle handle)
{
if (!_af_filehandle_ok(handle))
return -1;
if (handle->m_access == _AF_WRITE_ACCESS)
{
/* Finish writes on all tracks. */
for (int trackno = 0; trackno < handle->m_trackCount; trackno++)
{
Track *track = &handle->m_tracks[trackno];
if (track->ms->isDirty() && track->ms->setup(handle, track) == AF_FAIL)
return -1;
if (track->ms->sync(handle, track) != AF_SUCCEED)
return -1;
}
/* Update file headers. */
if (handle->update() != AF_SUCCEED)
return AF_FAIL;
}
else if (handle->m_access == _AF_READ_ACCESS)
{
/* Do nothing. */
}
else
{
_af_error(AF_BAD_ACCMODE, "unrecognized access mode %d",
handle->m_access);
return AF_FAIL;
}
return AF_SUCCEED;
}
int afCloseFile (AFfilehandle file)
{
int err;
if (!_af_filehandle_ok(file))
return -1;
afSyncFile(file);
err = file->m_fh->close();
if (err < 0)
_af_error(AF_BAD_CLOSE, "close returned %d", err);
delete file->m_fh;
delete file;
return 0;
}