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
|
/* 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/>.
*
*/
#ifndef BLADERUNNER_AUDIO_MIXER_H
#define BLADERUNNER_AUDIO_MIXER_H
#include "audio/audiostream.h"
#include "audio/mixer.h"
#include "common/mutex.h"
#include "bladerunner/bladerunner.h" // For BLADERUNNER_ORIGINAL_BUGS symbol
namespace BladeRunner {
class BladeRunnerEngine;
#if !BLADERUNNER_ORIGINAL_BUGS
enum audioMixerAppTimers {
kAudioMixerAppTimerMusicNext = 0,
kAudioMixerAppTimerMusicFadeOut = 1
};
#endif
class AudioMixer {
#if BLADERUNNER_ORIGINAL_BUGS
static const int kChannels = 9;
static const int kUsableChannels = 8;
static const int kMusicChannel = 8;
#else
static const int kChannels = 15;
static const int kUsableChannels = 14;
static const int kMusicChannel = 14;
static const int kAudioMixerAppTimersNum = 2;
#endif // BLADERUNNER_ORIGINAL_BUGS
static const int kUpdatesPerSecond = 40;
struct Channel {
bool isPresent;
int priority;
bool loop;
Audio::SoundHandle handle;
Audio::AudioStream *stream;
float volume; // should be in [0.0f, 100.0f]. It's percent for the Audio::Mixer::kMaxChannelVolume
float volumeDelta;
float volumeTarget; // should be in [0.0f, 100.0f], as for volume field.
float pan; // should be in [-100.0f, 100.0f]. It's percent for 127 (max absolute balance value)
float panDelta;
float panTarget; // should be in [-100.0f, 100.0f], as for pan field.
void (*endCallback)(int channel, void *data);
void *callbackData;
uint32 timeStarted;
uint32 trackDurationMs;
bool sentToMixer;
};
BladeRunnerEngine *_vm;
Channel _channels[kChannels];
Common::Mutex _mutex;
#if !BLADERUNNER_ORIGINAL_BUGS
struct audioMixerAppTimer {
bool started;
uint32 intervalMillis; // expiration interval in milliseconds
uint32 lastFired; // time of last time the timer expired in milliseconds
};
audioMixerAppTimer _audioMixerAppTimers[kAudioMixerAppTimersNum];
#endif // !BLADERUNNER_ORIGINAL_BUGS
public:
AudioMixer(BladeRunnerEngine *vm);
~AudioMixer();
int play(Audio::Mixer::SoundType type, Audio::RewindableAudioStream *stream, int priority, bool loop, int volume, int pan, void(*endCallback)(int, void *), void *callbackData, uint32 trackDurationMs);
int playMusic(Audio::RewindableAudioStream *stream, int volume, void(*endCallback)(int, void *), void *callbackData, uint32 trackDurationMs);
void stop(int channel, uint32 time);
void adjustVolume(int channel, int targetVolume, uint32 time);
void adjustPan(int channel, int targetPan, uint32 time);
#if !BLADERUNNER_ORIGINAL_BUGS
void startAppTimerProc(int audioMixAppTimerId, uint32 intervalMillis);
void stopAppTimerProc(int audioMixAppTimerId);
#endif // !BLADERUNNER_ORIGINAL_BUGS
// TODO Are these completely unused?
// void resume(int channel, uint32 delay);
// void pause(int channel, uint32 delay);
private:
int playInChannel(int channel, Audio::Mixer::SoundType type, Audio::RewindableAudioStream *stream, int priority, bool loop, int volume, int pan, void(*endCallback)(int, void *), void *callbackData, uint32 trackDurationMs);
bool isActive(int channel) const;
void tick();
static void timerCallback(void *refCon);
};
} // End of namespace BladeRunner
#endif
|
