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
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
|
/* ScummVM - Scumm Interpreter
* Copyright (C) 2001 Ludvig Strigeus
* Copyright (C) 2001-2003 The ScummVM project
*
* 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
* $Header$
*
*/
#ifndef PLAYER_V2_H
#define PLAYER_V2_H
#include "common/scummsys.h"
#include "common/system.h"
#if !defined(__GNUC__)
#pragma START_PACK_STRUCTS
#endif
struct channel_data {
uint16 time_left; // 00
uint16 next_cmd; // 02
uint16 base_freq; // 04
uint16 freq_delta; // 06
uint16 freq; // 08
uint16 volume; // 10
uint16 volume_delta; // 12
uint16 tempo; // 14
uint16 inter_note_pause; // 16
uint16 transpose; // 18
uint16 note_length; // 20
uint16 hull_curve; // 22
uint16 hull_offset; // 24
uint16 hull_counter; // 26
uint16 freqmod_table; // 28
uint16 freqmod_offset; // 30
uint16 freqmod_incr; // 32
uint16 freqmod_multiplier; // 34
uint16 freqmod_modulo; // 36
uint16 unknown[4]; // 38 - 44
uint16 music_timer; // 46
uint16 music_script_nr; // 48
} GCC_PACK;
#if !defined(__GNUC__)
#pragma END_PACK_STRUCTS
#endif
union ChannelInfo {
channel_data d;
uint16 array[sizeof(channel_data)/2];
};
class Scumm;
class SoundMixer;
class Player_V2 {
public:
Player_V2(Scumm *scumm);
~Player_V2();
void set_pcjr(bool pcjr);
void set_master_volume(int vol);
void startSound(int nr, byte *data);
void stopSound(int nr);
void stopAllSounds();
bool getSoundStatus(int nr) const;
int getMusicTimer() const;
private:
bool _isV3Game;
SoundMixer *_mixer;
OSystem *_system;
bool _pcjr;
int _header_len;
uint32 _sample_rate;
uint32 _next_tick;
uint32 _tick_len;
unsigned int _update_step;
unsigned int _decay;
unsigned int _level;
unsigned int _RNG;
unsigned int _volumetable[16];
int _music_timer;
int _music_timer_ctr;
int _ticks_per_music_timer;
int _timer_count[4];
int _timer_output;
const uint16 *_freqs_table;
ChannelInfo channels[4];
int current_nr;
byte *current_data;
int next_nr;
byte *next_data;
byte *retaddr;
OSystem::MutexRef _mutex;
void mutex_up() { _system->lock_mutex (_mutex); }
void mutex_down() { _system->unlock_mutex (_mutex); }
void restartSound();
void execute_cmd(ChannelInfo *channel);
void next_freqs(ChannelInfo *channel);
void clear_channel(int i);
void chainSound(int nr, byte *data);
void chainNextSound();
static void premix_proc(void *param, int16 *buf, uint len);
void do_mix (int16 *buf, uint len);
void lowPassFilter(int16 *data, uint len);
void squareGenerator(int channel, int freq, int vol,
int noiseFeedback, int16 *sample, uint len);
void generateSpkSamples(int16 *data, uint len);
void generatePCjrSamples(int16 *data, uint len);
};
#endif
|
