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
|
/* ScummVM - Scumm Interpreter
* Copyright (C) 2001 Ludvig Strigeus
* Copyright (C) 2001-2006 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* $Header$
*
*/
#ifndef PLAYER_V1_H
#define PLAYER_V1_H
#include "scumm/player_v2.h"
namespace Scumm {
/**
* Scumm V1 PC-Speaker player.
*/
class Player_V1 : public Player_V2 {
public:
Player_V1(ScummEngine *scumm, bool pcjr);
~Player_V1();
virtual void startSound(int sound);
virtual void stopSound(int sound);
virtual void stopAllSounds();
virtual int getMusicTimer() const;
protected:
virtual void nextTick();
virtual void clear_channel(int i);
virtual void chainSound(int nr, byte *data);
virtual void generateSpkSamples(int16 *data, uint len);
virtual void generatePCjrSamples(int16 *data, uint len);
void restartSound();
void set_mplex(uint mplex);
void parseSpeakerChunk();
void nextSpeakerCmd();
void parsePCjrChunk();
void nextPCjrCmd();
private:
struct channel_data_v1 {
uint freq;
uint volume;
byte *cmd_ptr;
uint notelen;
uint hull_counter;
uint attack;
uint decay;
uint level;
uint sustain_1;
uint sustain_2;
int sustctr;
};
channel_data_v1 _channels[4];
byte *_next_chunk;
byte *_repeat_chunk;
uint _chunk_type;
uint _mplex_step;
uint _mplex;
uint _repeat_ctr;
uint _freq_current;
int _forced_level;
uint16 _random_lsr;
uint *_value_ptr;
uint _time_left;
uint _start;
uint _end;
int _delta;
uint *_value_ptr_2;
uint _time_left_2;
uint _start_2;
int _delta_2;
};
} // End of namespace Scumm
#endif
|
