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/* ScummVM - Graphic Adventure Engine
*
* ScummVM is the legal property of its developers, whose names
* are too numerous to list here. Please refer to the COPYRIGHT
* file distributed with this source distribution.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
* This program 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 General Public License for more details.
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* $URL$
* $Id$
*
*/
#include "sound/iff.h"
#include "sound/audiostream.h"
#include "sound/mixer.h"
namespace Audio {
void A8SVXDecoder::readVHDR(Common::IFFChunk &chunk) {
_header.oneShotHiSamples = chunk.readUint32BE();
_header.repeatHiSamples = chunk.readUint32BE();
_header.samplesPerHiCycle = chunk.readUint32BE();
_header.samplesPerSec = chunk.readUint16BE();
_header.octaves = chunk.readByte();
_header.compression = chunk.readByte();
_header.volume = chunk.readUint32BE();
}
void A8SVXDecoder::readBODY(Common::IFFChunk &chunk) {
switch (_header.compression) {
case 0:
_dataSize = chunk.size;
_data = (int8*)malloc(_dataSize);
chunk.read(_data, _dataSize);
break;
case 1:
warning("compressed IFF audio is not supported");
break;
}
}
A8SVXDecoder::A8SVXDecoder(Common::ReadStream &input, Voice8Header &header, int8 *&data, uint32 &dataSize) :
IFFParser(input), _header(header), _data(data), _dataSize(dataSize) {
if (_typeId != ID_8SVX)
error("unknown audio format");
}
void A8SVXDecoder::decode() {
Common::IFFChunk *chunk;
while ((chunk = nextChunk()) != 0) {
switch (chunk->id) {
case ID_VHDR:
readVHDR(*chunk);
break;
case ID_BODY:
readBODY(*chunk);
break;
}
}
}
}
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