sounddesc.h

/* 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 3 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, see <http://www.gnu.org/licenses/>.
 *
 *
 * This file is dual-licensed.
 * In addition to the GPLv3 license mentioned above, this code is also
 * licensed under LGPL 2.1. See LICENSES/COPYING.LGPL file for the
 * full text of the license.
 *
 */
 
#ifndef GOB_SOUND_SOUNDDESC_H
#define GOB_SOUND_SOUNDDESC_H
 
#include "common/endian.h"
 
namespace Gob {
 
class Resource;
 
enum SoundType {
    SOUND_SND,
    SOUND_WAV,
    SOUND_ADL
};
 
class SoundDesc {
public:
    int16 _repCount;
    int16 _frequency;
    int16 _flag;
    int16 _id;
    byte _mixerFlags;
 
    SoundDesc();
    ~SoundDesc();
 
    void swap(SoundDesc &desc);
 
    byte *getData() { return _dataPtr; }
 
    uint32    size()         const { return _size;     }
    bool      empty()        const { return !_dataPtr; }
    SoundType getType()      const { return _type;     }
 
    bool isId(int16 id) const { return _dataPtr && (_id == id); }
 
    void set(SoundType type, byte *data, uint32 dSize);
    bool load(SoundType type, byte *data, uint32 dSize);
    bool load(SoundType type, Resource *resource);
 
    void free();
    void convToSigned();
 
    // Which fade out length to use when the fade starts half-way through?
    int16 calcFadeOutLength(int16 frequency);
    uint32 calcLength(int16 repCount, int16 frequency, bool fade);
 
private:
    Resource *_resource;
    byte *_data;
    byte *_dataPtr;
    uint32 _size;
 
    SoundType _type;
 
    bool loadSND(byte *data, uint32 dSize);
    bool loadWAV(byte *data, uint32 dSize);
    bool loadADL(byte *data, uint32 dSize);
};
 
} // End of namespace Gob
 
#endif // GOB_SOUND_SOUNDDESC_H