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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.
*
*/
#ifndef MOHAWK_SOUND_H
#define MOHAWK_SOUND_H
#include "common/array.h"
#include "common/scummsys.h"
#include "common/str.h"
#include "common/stream.h"
#include "audio/mixer.h"
class MidiDriver;
class MidiParser;
namespace Audio {
class RewindableAudioStream;
}
namespace Mohawk {
#define MAX_CHANNELS 2 // Can there be more than 2?
enum SndHandleType {
kFreeHandle,
kUsedHandle
};
struct SndHandle {
Audio::SoundHandle handle;
SndHandleType type;
uint samplesPerSecond;
uint16 id;
};
struct ADPCMStatus { // Holds ADPCM status data, but is irrelevant for us.
uint32 size;
uint16 itemCount;
uint16 channels;
struct StatusItem {
uint32 sampleFrame;
struct {
int16 last;
uint16 stepIndex;
} channelStatus[MAX_CHANNELS];
} *statusItems;
};
struct CueListPoint {
uint32 sampleFrame;
Common::String name;
};
struct CueList {
uint32 size;
uint16 pointCount;
Common::Array<CueListPoint> points;
};
enum {
kCodecRaw = 0,
kCodecADPCM = 1,
kCodecMPEG2 = 2
};
struct DataChunk {
uint16 sampleRate;
uint32 sampleCount;
byte bitsPerSample;
byte channels;
uint16 encoding;
uint16 loopCount; // 0 == no looping, 0xFFFF == infinite loop
uint32 loopStart;
uint32 loopEnd;
Common::SeekableReadStream *audioData;
};
Audio::RewindableAudioStream *makeMohawkWaveStream(Common::SeekableReadStream *stream, CueList *cueList = nullptr);
class MohawkEngine;
class Sound {
public:
explicit Sound(MohawkEngine *vm);
~Sound();
// Generic sound functions
Audio::SoundHandle *playSound(uint16 id, byte volume = Audio::Mixer::kMaxChannelVolume, bool loop = false, CueList *cueList = NULL);
void playMidi(uint16 id);
void stopMidi();
void stopSound();
void stopSound(uint16 id);
bool isPlaying(uint16 id);
bool isPlaying();
uint getNumSamplesPlayed(uint16 id);
private:
MohawkEngine *_vm;
MidiDriver *_midiDriver;
MidiParser *_midiParser;
byte *_midiData;
static Audio::RewindableAudioStream *makeLivingBooksWaveStream_v1(Common::SeekableReadStream *stream);
void initMidi();
Common::Array<SndHandle> _handles;
SndHandle *getHandle();
Audio::RewindableAudioStream *makeAudioStream(uint16 id, CueList *cueList = nullptr);
};
} // End of namespace Mohawk
#endif
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