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Diffstat (limited to 'apps/plugins/xworld/mixer.h')
-rw-r--r-- | apps/plugins/xworld/mixer.h | 69 |
1 files changed, 69 insertions, 0 deletions
diff --git a/apps/plugins/xworld/mixer.h b/apps/plugins/xworld/mixer.h new file mode 100644 index 0000000000..9447bcfb81 --- /dev/null +++ b/apps/plugins/xworld/mixer.h | |||
@@ -0,0 +1,69 @@ | |||
1 | /*************************************************************************** | ||
2 | * __________ __ ___. | ||
3 | * Open \______ \ ____ ____ | | _\_ |__ _______ ___ | ||
4 | * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / | ||
5 | * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < | ||
6 | * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ | ||
7 | * \/ \/ \/ \/ \/ | ||
8 | * $Id$ | ||
9 | * | ||
10 | * Copyright (C) 2014 Franklin Wei, Benjamin Brown | ||
11 | * Copyright (C) 2004 Gregory Montoir | ||
12 | * | ||
13 | * This program is free software; you can redistribute it and/or | ||
14 | * modify it under the terms of the GNU General Public License | ||
15 | * as published by the Free Software Foundation; either version 2 | ||
16 | * of the License, or (at your option) any later version. | ||
17 | * | ||
18 | * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY | ||
19 | * KIND, either express or implied. | ||
20 | * | ||
21 | ***************************************************************************/ | ||
22 | |||
23 | #ifndef __MIXER_H__ | ||
24 | #define __MIXER_H__ | ||
25 | |||
26 | #include "intern.h" | ||
27 | |||
28 | struct MixerChunk { | ||
29 | const uint8_t *data; | ||
30 | uint16_t len; | ||
31 | uint16_t loopPos; | ||
32 | uint16_t loopLen; | ||
33 | }; | ||
34 | |||
35 | struct MixerChannel { | ||
36 | uint8_t active; | ||
37 | uint8_t volume; | ||
38 | struct MixerChunk chunk; | ||
39 | uint32_t chunkPos; | ||
40 | uint32_t chunkInc; | ||
41 | }; | ||
42 | |||
43 | struct Serializer; | ||
44 | struct System; | ||
45 | |||
46 | #define AUDIO_NUM_CHANNELS 4 | ||
47 | |||
48 | struct Mixer { | ||
49 | void *_mutex; | ||
50 | struct System *sys; | ||
51 | |||
52 | /* Since the virtual machine and SDL are running simultaneously in two different threads */ | ||
53 | /* any read or write to an elements of the sound channels MUST be synchronized with a */ | ||
54 | /* mutex. */ | ||
55 | struct MixerChannel _channels[AUDIO_NUM_CHANNELS]; | ||
56 | }; | ||
57 | |||
58 | void mixer_create(struct Mixer*, struct System *stub); | ||
59 | void mixer_init(struct Mixer*); | ||
60 | void mixer_free(struct Mixer*); | ||
61 | |||
62 | void mixer_playChannel(struct Mixer*, uint8_t channel, const struct MixerChunk *mc, uint16_t freq, uint8_t volume); | ||
63 | void mixer_stopChannel(struct Mixer*, uint8_t channel); | ||
64 | void mixer_setChannelVolume(struct Mixer*, uint8_t channel, uint8_t volume); | ||
65 | void mixer_stopAll(struct Mixer*); | ||
66 | |||
67 | void mixer_saveOrLoad(struct Mixer*, struct Serializer *ser); | ||
68 | |||
69 | #endif | ||