Mercurial > sdl-ios-xcode
annotate src/audio/SDL_sysaudio.h @ 2268:4baee598306d
Date: Thu, 05 Jul 2007 14:02:33 -0700
From: Sam Lantinga
Subject: SDL 1.3 keyboard plan
After lots of discussion with Christian, this is what we came up with:
> So, to sum up...
> SDLK_* become the physical keys, starting at > (1<<21)
> We create a macro SDLK_INDEX(X)
> We have two functions SDL_GetLayoutKey(SDLKey) and SDL_GetKeyName()
> SDL_GetLayoutKey maps to UCS4 for printable characters, and SDLK* for
non-printable characters
> and does so based on the OS's current keyboard layout
> SDL_GetKeyName() handles both SDLK_* and UCS4, converting UCS4 to UTF-8 and
converting SDLK_* into our names, which are UTF-8 for printable characters.
> WASD folks use SDLK_*, and 'I' folks use SDL_GetLayoutKey(SDLK_*)
Here is the patch he came up with, and his e-mail about it:
Date: Fri, 17 Aug 2007 19:50:28 +0200
From: Christian Walther
Subject: Re: SDL 1.3 keyboard plan
> Sounds great, go ahead and send me a patch.
Here goes! Thanks for having a look. Don't hesitate to comment if
anything does not conform to your ideas.
One caveat: Committing this now may break compilability of some video
drivers - specifically, if they use any of the SDLK_* codes that were
obsoleted and moved into SDL_compat.h. I only tried Cocoa (which did
break, but is already fixed) and X11 (which didn't, but then its key
handling is #iffed out). If that's a problem, it may need to go into
a branch.
-Christian
author | Sam Lantinga <slouken@libsdl.org> |
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date | Sun, 19 Aug 2007 14:52:52 +0000 |
parents | 866052b01ee5 |
children | f39a056aec8b f8f68f47285a |
rev | line source |
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0 | 1 /* |
2 SDL - Simple DirectMedia Layer | |
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3 Copyright (C) 1997-2006 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 /* Define the SDL audio driver structure */ |
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73 struct SDL_AudioDevice |
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74 { |
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75 /* * * */ |
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76 /* Data common to all devices */ |
0 | 77 |
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78 /* The current audio specification (shared with audio thread) */ |
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79 SDL_AudioSpec spec; |
0 | 80 |
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81 /* An audio conversion block for audio format emulation */ |
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82 SDL_AudioCVT convert; |
0 | 83 |
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84 /* Current state flags */ |
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85 int iscapture; |
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86 int enabled; |
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87 int paused; |
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88 int opened; |
0 | 89 |
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90 /* Fake audio buffer for when the audio hardware is busy */ |
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91 Uint8 *fake_stream; |
0 | 92 |
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93 /* A semaphore for locking the mixing buffers */ |
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94 SDL_mutex *mixer_lock; |
0 | 95 |
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96 /* A thread to feed the audio device */ |
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97 SDL_Thread *thread; |
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98 Uint32 threadid; |
0 | 99 |
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100 /* * * */ |
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101 /* Data private to this driver */ |
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102 struct SDL_PrivateAudioData *hidden; |
0 | 103 }; |
104 #undef _THIS | |
105 | |
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106 typedef struct AudioBootStrap |
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107 { |
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108 const char *name; |
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109 const char *desc; |
2060 | 110 int (*init) (SDL_AudioDriverImpl * impl); |
111 int demand_only:1; /* 1==request explicitly, or it won't be available. */ | |
0 | 112 } AudioBootStrap; |
113 | |
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114 #endif /* _SDL_sysaudio_h */ |
0 | 115 |
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116 /* vi: set ts=4 sw=4 expandtab: */ |