mirror of
https://github.com/libretro/scummvm.git
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84 lines
2.1 KiB
C++
84 lines
2.1 KiB
C++
/* ScummVM - Graphic Adventure Engine
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*
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* ScummVM is the legal property of its developers, whose names
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* are too numerous to list here. Please refer to the COPYRIGHT
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* file distributed with this source distribution.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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* $URL$
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* $Id$
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*
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*/
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#include "sound/iff.h"
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#include "sound/audiostream.h"
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#include "sound/mixer.h"
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namespace Audio {
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void A8SVXDecoder::readVHDR(Common::IFFChunk &chunk) {
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_header.oneShotHiSamples = chunk.readUint32BE();
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_header.repeatHiSamples = chunk.readUint32BE();
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_header.samplesPerHiCycle = chunk.readUint32BE();
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_header.samplesPerSec = chunk.readUint16BE();
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_header.octaves = chunk.readByte();
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_header.compression = chunk.readByte();
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_header.volume = chunk.readUint32BE();
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}
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void A8SVXDecoder::readBODY(Common::IFFChunk &chunk) {
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switch (_header.compression) {
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case 0:
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_dataSize = chunk.size;
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_data = (byte*)malloc(_dataSize);
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chunk.read(_data, _dataSize);
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break;
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case 1:
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warning("compressed IFF audio is not supported");
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break;
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}
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}
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A8SVXDecoder::A8SVXDecoder(Common::ReadStream &input, Voice8Header &header, byte *&data, uint32 &dataSize) :
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IFFParser(input), _header(header), _data(data), _dataSize(dataSize) {
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if (_typeId != ID_8SVX)
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error("unknown audio format");
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}
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void A8SVXDecoder::decode() {
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Common::IFFChunk *chunk;
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while ((chunk = nextChunk()) != 0) {
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switch (chunk->id) {
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case ID_VHDR:
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readVHDR(*chunk);
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break;
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case ID_BODY:
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readBODY(*chunk);
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break;
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}
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}
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}
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}
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