1 /*
2   Simple DirectMedia Layer
3   Copyright (C) 1997-2020 Sam Lantinga <slouken@libsdl.org>
4 
5   This software is provided 'as-is', without any express or implied
6   warranty.  In no event will the authors be held liable for any damages
7   arising from the use of this software.
8 
9   Permission is granted to anyone to use this software for any purpose,
10   including commercial applications, and to alter it and redistribute it
11   freely, subject to the following restrictions:
12 
13   1. The origin of this software must not be misrepresented; you must not
14      claim that you wrote the original software. If you use this software
15      in a product, an acknowledgment in the product documentation would be
16      appreciated but is not required.
17   2. Altered source versions must be plainly marked as such, and must not be
18      misrepresented as being the original software.
19   3. This notice may not be removed or altered from any source distribution.
20 */
21 #include "../../SDL_internal.h"
22 
23 #ifndef SDL_coreaudio_h_
24 #define SDL_coreaudio_h_
25 
26 #include "../SDL_sysaudio.h"
27 
28 #if !defined(__IPHONEOS__)
29 #define MACOSX_COREAUDIO 1
30 #endif
31 
32 #if MACOSX_COREAUDIO
33 #include <CoreAudio/CoreAudio.h>
34 #include <CoreServices/CoreServices.h>
35 #else
36 #import <AVFoundation/AVFoundation.h>
37 #import <UIKit/UIApplication.h>
38 #endif
39 
40 #include <AudioToolbox/AudioToolbox.h>
41 #include <AudioUnit/AudioUnit.h>
42 
43 /* Hidden "this" pointer for the audio functions */
44 #define _THIS   SDL_AudioDevice *this
45 
46 struct SDL_PrivateAudioData
47 {
48     SDL_Thread *thread;
49     AudioQueueRef audioQueue;
50     int numAudioBuffers;
51     AudioQueueBufferRef *audioBuffer;
52     void *buffer;
53     UInt32 bufferOffset;
54     UInt32 bufferSize;
55     AudioStreamBasicDescription strdesc;
56     SDL_sem *ready_semaphore;
57     char *thread_error;
58     SDL_atomic_t shutdown;
59 #if MACOSX_COREAUDIO
60     AudioDeviceID deviceID;
61     SDL_atomic_t device_change_flag;
62 #else
63     SDL_bool interrupted;
64     CFTypeRef interruption_listener;
65 #endif
66 };
67 
68 #endif /* SDL_coreaudio_h_ */
69 
70 /* vi: set ts=4 sw=4 expandtab: */
71