mirror of
https://github.com/libretro/scummvm.git
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129 lines
3.7 KiB
C++
129 lines
3.7 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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*/
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#ifndef SCUMM_SMUSH_CHANNEL_H
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#define SCUMM_SMUSH_CHANNEL_H
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#include "common/util.h"
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namespace Common {
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class SeekableReadStream;
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}
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namespace Scumm {
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class SmushChannel {
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protected:
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int32 _track; ///< the track number
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byte *_tbuffer; ///< data temporary buffer
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int32 _tbufferSize; ///< temporary buffer size
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byte *_sbuffer; ///< sound buffer
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int32 _sbufferSize; ///< sound buffer size
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int32 _dataSize; ///< remaining size of sound data in the iMUS buffer
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bool _inData;
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int32 _volume;
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int32 _pan;
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void processBuffer();
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virtual bool handleSubTags(int32 &offset) = 0;
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public:
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SmushChannel(int32 track);
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virtual ~SmushChannel();
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virtual bool appendData(Common::SeekableReadStream &b, int32 size) = 0;
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virtual bool setParameters(int32, int32, int32, int32, int32) = 0;
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virtual bool checkParameters(int32, int32, int32, int32, int32) = 0;
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virtual bool isTerminated() const = 0;
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virtual byte *getSoundData() = 0;
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virtual int32 getRate() = 0;
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virtual bool getParameters(bool &stereo, bool &is_16bit, int32 &vol, int32 &pan) = 0;
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int32 getAvailableSoundDataSize() const { return _sbufferSize; }
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int32 getTrackIdentifier() const { return _track; }
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};
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class SaudChannel : public SmushChannel {
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private:
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int32 _nbframes;
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bool _markReached;
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int32 _flags;
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int32 _index;
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bool _keepSize;
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protected:
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bool handleSubTags(int32 &offset);
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public:
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SaudChannel(int32 track);
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bool isTerminated() const;
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bool setParameters(int32 duration, int32 flags, int32 vol1, int32 vol2, int32 index);
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bool checkParameters(int32 index, int32 duration, int32 flags, int32 vol1, int32 vol2);
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bool appendData(Common::SeekableReadStream &b, int32 size);
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byte *getSoundData();
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int32 getRate() { return 22050; }
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bool getParameters(bool &stereo, bool &is_16bit, int32 &vol, int32 &pan) {
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stereo = false;
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is_16bit = false;
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vol = _volume;
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pan = _pan;
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return true;
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}
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};
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class ImuseChannel : public SmushChannel {
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private:
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int32 _srbufferSize;
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int32 _bitsize; ///< the bitsize of the original data
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int32 _rate; ///< the sampling rate of the original data
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int32 _channels; ///< the number of channels of the original data
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protected:
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void decode();
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bool handleMap(byte *data);
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bool handleSubTags(int32 &offset);
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public:
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ImuseChannel(int32 track);
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bool isTerminated() const;
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bool setParameters(int32 nbframes, int32 size, int32 track_flags, int32 unk1, int32);
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bool checkParameters(int32 index, int32 nbframes, int32 size, int32 track_flags, int32 unk1);
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bool appendData(Common::SeekableReadStream &b, int32 size);
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byte *getSoundData();
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int32 getRate() { return _rate; }
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bool getParameters(bool &stereo, bool &is_16bit, int32 &vol, int32 &pan) {
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stereo = (_channels == 2);
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is_16bit = (_bitsize > 8);
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vol = _volume;
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pan = _pan;
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return true;
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}
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};
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} // End of namespace Scumm
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#endif
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