1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
|
/* ScummVM - Scumm Interpreter
* Copyright (C) 2006 The ScummVM project
*
* cinE Engine is (C) 2004-2005 by CinE Team
*
* 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.
*
* $URL$
* $Id$
*
*/
#ifndef CINE_SNDDRIVER_H_
#define CINE_SNDDRIVER_H_
#include "sound/audiostream.h"
#include "sound/fmopl.h"
namespace Audio {
class Mixer;
}
namespace Cine {
#define ADLIB_REG_TIMER_1_DATA 2
#define ADLIB_REG_TIMER_CONTROL_FLAGS 4
#define ADLIB_REG_AM_VIBRATO_EG_KS 0x20
#define ADLIB_REG_KEY_SCALING_OPERATOR_OUTPUT 0x40
#define ADLIB_REG_ATTACK_RATE_DECAY_RATE 0x60
#define ADLIB_REG_SUSTAIN_LEVEL_RELEASE_RATE_0 0x80
#define ADLIB_REG_FREQUENCY_0 0xA0
#define ADLIB_REG_KEY_ON_OCTAVE_FREQUENCY_0 0xB0
#define ADLIB_REG_AM_VIBRATO_RHYTHM 0xBD
#define ADLIB_REG_FEEDBACK_STRENGTH_CONNECTION_TYPE 0xC0
#define ADLIB_REG_WAVE_SELECT 0xE0
struct SoundDriver {
void (*setupChannel) (int channelNum, const uint8 * data, int instrumentNum);
void (*setChannelFrequency) (int channelNum, int frequency);
void (*stopChannel) (int channelNum);
void (*playSound) (uint8 * data, int channelNum, int volume);
};
extern uint16 snd_fadeOutCounter, snd_songTicksCounter;
extern uint8 *snd_adlibInstrumentsTable[4];
extern SoundDriver snd_driver;
extern void snd_adlibDriverInit();
extern void snd_adlibDriverExit();
extern void snd_adlibDriverStopSong();
extern void snd_resetChannel(int channelNum);
class AdlibMusic : public AudioStream {
public:
AdlibMusic(Audio::Mixer * pMixer);
~AdlibMusic(void);
virtual void setVolume(uint8 volume);
FM_OPL *getOPL() {
return _opl;
}
// AudioStream API
int readBuffer(int16 *buffer, const int numSamples) {
premixerCall(buffer, numSamples / 2);
return numSamples;
}
bool isStereo() const { return true; }
bool endOfData() const { return false; }
int getRate() const { return _sampleRate; }
private:
FM_OPL *_opl;
Audio::Mixer * _mixer;
uint32 _sampleRate;
void premixerCall(int16 *buf, uint len);
};
} // End of namespace Cine
#endif /* CINE_SNDDRIVER_H_ */
|
