Mercurial > sdl-ios-xcode
annotate src/audio/SDL_sysaudio.h @ 3191:91b335df6fc8
Fixed bug #750
Since many different event structures include windowID it should be placed near
the beginning of the structure (preferably right after type) so it's position
is the same between different events.
This is to avoid code like this:
if (event.type == SDL_WINDOWEVENT)
win = event.window.windowID;
else if ((SDL_EVENTMASK(event.type) & SDL_KEYEVENTMASK) != 0)
win = event.key.windowID;
else if (event.type == SDL_TEXTINPUT)
win = event.text.windowID;
else if (event.type == SDL_MOUSEMOTION)
win = event.motion.windowID;
else if ((SDL_EVENTMASK(event.type) & (SDL_MOUBUTTONDOWNMASK |
SDL_MOUBUTTONUPMASK)) != 0)
win = event.button.windowID;
else if (event.type == SDL_MOUSEWHEEL)
win = event.wheel.windowID;
...
in favor of:
win = event.window.windowID;
author | Sam Lantinga <slouken@libsdl.org> |
---|---|
date | Wed, 10 Jun 2009 14:00:21 +0000 |
parents | 99210400e8b9 |
children | 0d1b16ee0bca |
rev | line source |
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0 | 1 /* |
2 SDL - Simple DirectMedia Layer | |
2859 | 3 Copyright (C) 1997-2009 Sam Lantinga |
0 | 4 |
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5 This library is SDL_free software; you can redistribute it and/or |
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6 modify it under the terms of the GNU Lesser General Public |
0 | 7 License as published by the Free Software Foundation; either |
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8 version 2.1 of the License, or (at your option) any later version. |
0 | 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 | |
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13 Lesser General Public License for more details. |
0 | 14 |
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15 You should have received a copy of the GNU Lesser General Public |
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16 License along with this library; if not, write to the Free Software |
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17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
0 | 18 |
19 Sam Lantinga | |
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20 slouken@libsdl.org |
0 | 21 */ |
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22 #include "SDL_config.h" |
0 | 23 |
24 #ifndef _SDL_sysaudio_h | |
25 #define _SDL_sysaudio_h | |
26 | |
27 #include "SDL_mutex.h" | |
28 #include "SDL_thread.h" | |
29 | |
30 /* The SDL audio driver */ | |
31 typedef struct SDL_AudioDevice SDL_AudioDevice; | |
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32 #define _THIS SDL_AudioDevice *_this |
0 | 33 |
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34 typedef struct SDL_AudioDriverImpl |
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35 { |
2060 | 36 int (*DetectDevices) (int iscapture); |
37 const char *(*GetDeviceName) (int index, int iscapture); | |
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38 int (*OpenDevice) (_THIS, const char *devname, int iscapture); |
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39 void (*ThreadInit) (_THIS); /* Called by audio thread at start */ |
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40 void (*WaitDevice) (_THIS); |
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41 void (*PlayDevice) (_THIS); |
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42 Uint8 *(*GetDeviceBuf) (_THIS); |
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43 void (*WaitDone) (_THIS); |
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44 void (*CloseDevice) (_THIS); |
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45 void (*LockDevice) (_THIS); |
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46 void (*UnlockDevice) (_THIS); |
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47 void (*Deinitialize) (void); |
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48 |
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49 /* Some flags to push duplicate code into the core and reduce #ifdefs. */ |
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50 int ProvidesOwnCallbackThread:1; |
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51 int SkipMixerLock:1; |
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52 int HasCaptureSupport:1; |
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53 int OnlyHasDefaultOutputDevice:1; |
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54 int OnlyHasDefaultInputDevice:1; |
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55 } SDL_AudioDriverImpl; |
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56 |
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57 |
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58 typedef struct SDL_AudioDriver |
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59 { |
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60 /* * * */ |
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61 /* The name of this audio driver */ |
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62 const char *name; |
0 | 63 |
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64 /* * * */ |
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65 /* The description of this audio driver */ |
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66 const char *desc; |
0 | 67 |
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68 SDL_AudioDriverImpl impl; |
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69 } SDL_AudioDriver; |
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70 |
0 | 71 |
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72 /* Streamer */ |
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73 typedef struct |
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74 { |
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75 Uint8 *buffer; |
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76 int max_len; /* the maximum length in bytes */ |
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77 int read_pos, write_pos; /* the position of the write and read heads in bytes */ |
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78 } SDL_AudioStreamer; |
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79 |
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80 |
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81 /* Define the SDL audio driver structure */ |
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82 struct SDL_AudioDevice |
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83 { |
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84 /* * * */ |
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85 /* Data common to all devices */ |
0 | 86 |
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87 /* The current audio specification (shared with audio thread) */ |
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88 SDL_AudioSpec spec; |
0 | 89 |
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90 /* An audio conversion block for audio format emulation */ |
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91 SDL_AudioCVT convert; |
0 | 92 |
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93 /* The streamer, if sample rate conversion necessitates it */ |
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94 int use_streamer; |
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95 SDL_AudioStreamer streamer; |
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96 |
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97 /* Current state flags */ |
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98 int iscapture; |
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99 int enabled; |
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100 int paused; |
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101 int opened; |
0 | 102 |
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103 /* Fake audio buffer for when the audio hardware is busy */ |
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104 Uint8 *fake_stream; |
0 | 105 |
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106 /* A semaphore for locking the mixing buffers */ |
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107 SDL_mutex *mixer_lock; |
0 | 108 |
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109 /* A thread to feed the audio device */ |
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110 SDL_Thread *thread; |
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111 Uint32 threadid; |
0 | 112 |
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113 /* * * */ |
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114 /* Data private to this driver */ |
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115 struct SDL_PrivateAudioData *hidden; |
0 | 116 }; |
117 #undef _THIS | |
118 | |
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119 typedef struct AudioBootStrap |
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120 { |
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121 const char *name; |
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122 const char *desc; |
2060 | 123 int (*init) (SDL_AudioDriverImpl * impl); |
124 int demand_only:1; /* 1==request explicitly, or it won't be available. */ | |
0 | 125 } AudioBootStrap; |
126 | |
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127 #endif /* _SDL_sysaudio_h */ |
0 | 128 |
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129 /* vi: set ts=4 sw=4 expandtab: */ |