sm64pc/tools/audiofile-0.3.6/libaudiofile/aes.cpp
2020-05-07 20:21:22 +02:00

109 lines
2.2 KiB
C++

/*
Audio File Library
Copyright (C) 1998-1999, Michael Pruett <michael@68k.org>
Copyright (C) 2000, 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
*/
/*
aes.c
This file contains routines for dealing with AES recording data.
*/
#include "config.h"
#include <string.h>
#include <assert.h>
#include "FileHandle.h"
#include "Setup.h"
#include "Track.h"
#include "afinternal.h"
#include "audiofile.h"
#include "util.h"
void afInitAESChannelData (AFfilesetup setup, int trackid)
{
if (!_af_filesetup_ok(setup))
return;
TrackSetup *track = setup->getTrack(trackid);
if (!track)
return;
track->aesDataSet = true;
}
void afInitAESChannelDataTo (AFfilesetup setup, int trackid, int willBeData)
{
if (!_af_filesetup_ok(setup))
return;
TrackSetup *track = setup->getTrack(trackid);
if (!track)
return;
track->aesDataSet = willBeData;
}
int afGetAESChannelData (AFfilehandle file, int trackid, unsigned char buf[24])
{
if (!_af_filehandle_ok(file))
return -1;
Track *track = file->getTrack(trackid);
if (!track)
return -1;
if (!track->hasAESData)
{
if (buf)
memset(buf, 0, 24);
return 0;
}
if (buf)
memcpy(buf, track->aesData, 24);
return 1;
}
void afSetAESChannelData (AFfilehandle file, int trackid, unsigned char buf[24])
{
if (!_af_filehandle_ok(file))
return;
Track *track = file->getTrack(trackid);
if (!track)
return;
if (!file->checkCanWrite())
return;
if (track->hasAESData)
{
memcpy(track->aesData, buf, 24);
}
else
{
_af_error(AF_BAD_NOAESDATA,
"unable to store AES channel status data for track %d",
trackid);
}
}