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

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2020-05-05 12:15:53 +00:00
/*
Audio File Library
Copyright (C) 1998, 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
*/
/*
Miscellaneous.cpp
This file contains routines for dealing with the Audio File
Library's internal miscellaneous data types.
*/
#include "config.h"
#include <algorithm>
#include <stdint.h>
#include <stdlib.h>
#include <string.h>
#include "FileHandle.h"
#include "Setup.h"
#include "afinternal.h"
#include "audiofile.h"
#include "util.h"
void afInitMiscIDs (AFfilesetup setup, const int *ids, int nids)
{
if (!_af_filesetup_ok(setup))
return;
if (setup->miscellaneous != NULL)
{
free(setup->miscellaneous);
}
setup->miscellaneousCount = nids;
if (nids == 0)
setup->miscellaneous = NULL;
else
{
setup->miscellaneous = (MiscellaneousSetup *) _af_calloc(nids,
sizeof (MiscellaneousSetup));
if (setup->miscellaneous == NULL)
return;
for (int i=0; i<nids; i++)
{
setup->miscellaneous[i].id = ids[i];
setup->miscellaneous[i].type = 0;
setup->miscellaneous[i].size = 0;
}
}
setup->miscellaneousSet = true;
}
int afGetMiscIDs (AFfilehandle file, int *ids)
{
if (!_af_filehandle_ok(file))
return -1;
if (ids != NULL)
{
for (int i=0; i<file->m_miscellaneousCount; i++)
{
ids[i] = file->m_miscellaneous[i].id;
}
}
return file->m_miscellaneousCount;
}
void afInitMiscType (AFfilesetup setup, int miscellaneousid, int type)
{
if (!_af_filesetup_ok(setup))
return;
MiscellaneousSetup *miscellaneous = setup->getMiscellaneous(miscellaneousid);
if (miscellaneous)
miscellaneous->type = type;
}
int afGetMiscType (AFfilehandle file, int miscellaneousid)
{
if (!_af_filehandle_ok(file))
return -1;
Miscellaneous *miscellaneous = file->getMiscellaneous(miscellaneousid);
if (miscellaneous)
return miscellaneous->type;
return -1;
}
void afInitMiscSize (AFfilesetup setup, int miscellaneousid, int size)
{
if (!_af_filesetup_ok(setup))
return;
MiscellaneousSetup *miscellaneous = setup->getMiscellaneous(miscellaneousid);
if (miscellaneous)
miscellaneous->size = size;
}
int afGetMiscSize (AFfilehandle file, int miscellaneousid)
{
if (!_af_filehandle_ok(file))
return -1;
Miscellaneous *miscellaneous = file->getMiscellaneous(miscellaneousid);
if (miscellaneous)
return miscellaneous->size;
return -1;
}
int afWriteMisc (AFfilehandle file, int miscellaneousid, const void *buf, int bytes)
{
if (!_af_filehandle_ok(file))
return -1;
if (!file->checkCanWrite())
return -1;
Miscellaneous *miscellaneous = file->getMiscellaneous(miscellaneousid);
if (!miscellaneous)
return -1;
if (bytes <= 0)
{
_af_error(AF_BAD_MISCSIZE, "invalid size (%d) for miscellaneous chunk", bytes);
return -1;
}
if (miscellaneous->buffer == NULL && miscellaneous->size != 0)
{
miscellaneous->buffer = _af_malloc(miscellaneous->size);
if (miscellaneous->buffer == NULL)
return -1;
memset(miscellaneous->buffer, 0, miscellaneous->size);
}
int localsize = std::min(bytes,
miscellaneous->size - miscellaneous->position);
memcpy((char *) miscellaneous->buffer + miscellaneous->position,
buf, localsize);
miscellaneous->position += localsize;
return localsize;
}
int afReadMisc (AFfilehandle file, int miscellaneousid, void *buf, int bytes)
{
if (!_af_filehandle_ok(file))
return -1;
if (!file->checkCanRead())
return -1;
Miscellaneous *miscellaneous = file->getMiscellaneous(miscellaneousid);
if (!miscellaneous)
return -1;
if (bytes <= 0)
{
_af_error(AF_BAD_MISCSIZE, "invalid size (%d) for miscellaneous chunk", bytes);
return -1;
}
int localsize = std::min(bytes,
miscellaneous->size - miscellaneous->position);
memcpy(buf, (char *) miscellaneous->buffer + miscellaneous->position,
localsize);
miscellaneous->position += localsize;
return localsize;
}
int afSeekMisc (AFfilehandle file, int miscellaneousid, int offset)
{
if (!_af_filehandle_ok(file))
return -1;
Miscellaneous *miscellaneous = file->getMiscellaneous(miscellaneousid);
if (!miscellaneous)
return -1;
if (offset >= miscellaneous->size)
{
_af_error(AF_BAD_MISCSEEK,
"offset %d too big for miscellaneous chunk %d "
"(%d data bytes)",
offset, miscellaneousid, miscellaneous->size);
return -1;
}
miscellaneous->position = offset;
return offset;
}