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comparison src/audio/amigaos/SDL_sysaudio.h @ 0:74212992fb08

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Initial revision
author Sam Lantinga <slouken@lokigames.com>
date Thu, 26 Apr 2001 16:45:43 +0000
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1 /*
2 SDL - Simple DirectMedia Layer
3 Copyright (C) 1997, 1998, 1999, 2000, 2001 Sam Lantinga
4
5 This library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Library General Public
7 License as published by the Free Software Foundation; either
8 version 2 of the License, or (at your option) any later version.
9
10 This library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Library General Public License for more details.
14
15 You should have received a copy of the GNU Library General Public
16 License along with this library; if not, write to the Free
17 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
18
19 Sam Lantinga
20 slouken@devolution.com
21 */
22
23 #ifdef SAVE_RCSID
24 static char rcsid =
25 "@(#) $Id$";
26 #endif
27
28 #ifndef _SDL_sysaudio_h
29 #define _SDL_sysaudio_h
30
31 #include "SDL_mutex.h"
32 #include "SDL_thread.h"
33
34 #include <exec/exec.h>
35 #include <dos/dos.h>
36 #ifdef __SASC
37 #include <proto/exec.h>
38 #else
39 #include <inline/exec.h>
40 #endif
41
42 #include <devices/ahi.h>
43 #include "mydebug.h"
44
45 /* The SDL audio driver */
46 typedef struct SDL_AudioDevice SDL_AudioDevice;
47
48 /* Define the SDL audio driver structure */
49 #define _THIS SDL_AudioDevice *_this
50 #ifndef _STATUS
51 #define _STATUS SDL_status *status
52 #endif
53 struct SDL_AudioDevice {
54 /* * * */
55 /* The name of this audio driver */
56 const char *name;
57
58 /* * * */
59 /* Public driver functions */
60 int (*OpenAudio)(_THIS, SDL_AudioSpec *spec);
61 void (*ThreadInit)(_THIS); /* Called by audio thread at start */
62 void (*WaitAudio)(_THIS);
63 void (*PlayAudio)(_THIS);
64 Uint8 *(*GetAudioBuf)(_THIS);
65 void (*WaitDone)(_THIS);
66 void (*CloseAudio)(_THIS);
67
68 /* * * */
69 /* Data common to all devices */
70
71 /* The current audio specification (shared with audio thread) */
72 SDL_AudioSpec spec;
73
74 /* An audio conversion block for audio format emulation */
75 SDL_AudioCVT convert;
76
77 /* Current state flags */
78 int enabled;
79 int paused;
80
81 /* Fake audio buffer for when the audio hardware is busy */
82 Uint8 *fake_stream;
83
84 /* A semaphore for locking the mixing buffers */
85 struct SignalSemaphore mixer_lock;
86
87 /* A thread to feed the audio device */
88 SDL_Thread *thread;
89 Uint32 threadid;
90
91 /* * * */
92 /* Data private to this driver */
93 struct SDL_PrivateAudioData *hidden;
94
95 /* * * */
96 /* The function used to dispose of this structure */
97 void (*free)(_THIS);
98 };
99 #undef _THIS
100
101 typedef struct AudioBootStrap {
102 const char *name;
103 int (*available)(void);
104 SDL_AudioDevice *(*create)(int devindex);
105 } AudioBootStrap;
106
107 #ifdef ESD_SUPPORT
108 extern AudioBootStrap ESD_bootstrap;
109 #endif
110 #ifdef linux
111 extern AudioBootStrap DMA_bootstrap;
112 #endif
113 #ifdef unix
114 extern AudioBootStrap AUDIO_bootstrap;
115 #endif
116 #ifdef ENABLE_WINDIB
117 extern AudioBootStrap WAVEOUT_bootstrap;
118 #endif
119 #ifdef ENABLE_DIRECTX
120 extern AudioBootStrap DSOUND_bootstrap;
121 #endif
122 #ifdef __BEOS__
123 extern AudioBootStrap BAUDIO_bootstrap;
124 #endif
125 #ifdef macintosh
126 extern AudioBootStrap AUDIO_bootstrap;
127 #endif
128 #ifdef _AIX
129 extern AudioBootStrap Paud_bootstrap;
130 #endif
131 #ifdef ENABLE_CYBERGRAPHICS
132 extern AudioBootStrap AHI_bootstrap;
133 #endif
134
135 /* This is the current audio device */
136 extern SDL_AudioDevice *current_audio;
137
138 #ifndef __SASC
139 extern struct ExecBase *SysBase;
140 #endif
141
142 #endif /* _SDL_sysaudio_h */