Mercurial > sdl-ios-xcode
annotate src/main/beos/SDL_BeApp.cc @ 968:4675910b0b7b
Date: Mon, 11 Oct 2004 15:17:27 +0300 (EEST)
From: Hannu Savolainen
Subject: Re: SDL uses obsolete OSS features
I did some work on getting OSS to work better with SDL. There have been
some problems with select which should be fixed now.
I'm having some problems in understanding what is the purpose of the
DSP_WaitAudio() routine. I added a return to the very beginning of this
routine and commendted out the define for USE_BLOCKING_WRITES. At least
lbreakout2 seems to work as well as earlier. The latencies are the same.
An ordinary blocking write does exactly the same thing than DSP_WaitAudio
does. So I would recommend using the USE_BLOCKING_WRITES approach and
removing everything from the DSP_WaitAudio routine. Also enabling
USE_BLOCKING_WRITES makes it possible to simplify DSP_PlayAudio() because
you don't need to handle the partial writes (the do-while loop).
Attached is a patch against SDL-1.2.7. After these changes SDL will use
OSS as it's designed to be used (make it as simple as possible). This code
should work with all OSS implementations because it uses only the very
fundamental features that have been there since the jurassic times.
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Fri, 12 Nov 2004 21:39:04 +0000 |
| parents | aa4ac9e65d92 |
| children | c9b51268668f |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 2 SDL - Simple DirectMedia Layer | |
|
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Updated copyright information for 2004 (Happy New Year!)
Sam Lantinga <slouken@libsdl.org>
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|
3 Copyright (C) 1997-2004 Sam Lantinga |
| 0 | 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 | |
|
252
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Updated the source with the correct e-mail address
Sam Lantinga <slouken@libsdl.org>
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20 slouken@libsdl.org |
| 0 | 21 */ |
| 22 | |
| 23 #ifdef SAVE_RCSID | |
| 24 static char rcsid = | |
| 25 "@(#) $Id$"; | |
| 26 #endif | |
| 27 | |
| 28 /* Handle the BeApp specific portions of the application */ | |
| 29 | |
| 30 #include <AppKit.h> | |
| 31 #include <storage/Path.h> | |
| 32 #include <storage/Entry.h> | |
| 33 #include <stdlib.h> | |
|
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Fixed build error on BeOS
Sam Lantinga <slouken@libsdl.org>
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34 #include <string.h> |
| 0 | 35 #include <unistd.h> |
| 36 | |
| 37 #include "SDL_BeApp.h" | |
| 38 #include "SDL_thread.h" | |
| 39 #include "SDL_timer.h" | |
| 40 #include "SDL_error.h" | |
| 41 | |
| 42 /* Flag to tell whether or not the Be application is active or not */ | |
| 43 int SDL_BeAppActive = 0; | |
| 44 static SDL_Thread *SDL_AppThread = NULL; | |
| 45 | |
| 46 static int StartBeApp(void *unused) | |
| 47 { | |
| 48 BApplication *App; | |
| 49 | |
| 50 App = new BApplication("application/x-SDL-executable"); | |
| 51 | |
| 52 App->Run(); | |
| 53 delete App; | |
| 54 return(0); | |
| 55 } | |
| 56 | |
| 57 /* Initialize the Be Application, if it's not already started */ | |
| 58 int SDL_InitBeApp(void) | |
| 59 { | |
| 60 /* Create the BApplication that handles appserver interaction */ | |
| 61 if ( SDL_BeAppActive <= 0 ) { | |
| 62 SDL_AppThread = SDL_CreateThread(StartBeApp, NULL); | |
| 63 if ( SDL_AppThread == NULL ) { | |
| 64 SDL_SetError("Couldn't create BApplication thread"); | |
| 65 return(-1); | |
| 66 } | |
| 67 | |
|
855
aa4ac9e65d92
I noticed MacOSX SDL sets up working directory to parent of executable.
Sam Lantinga <slouken@libsdl.org>
parents:
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68 /* Change working to directory to that of executable */ |
|
aa4ac9e65d92
I noticed MacOSX SDL sets up working directory to parent of executable.
Sam Lantinga <slouken@libsdl.org>
parents:
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diff
changeset
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69 app_info info; |
|
aa4ac9e65d92
I noticed MacOSX SDL sets up working directory to parent of executable.
Sam Lantinga <slouken@libsdl.org>
parents:
769
diff
changeset
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70 if (B_OK == be_app->GetAppInfo(&info)) { |
|
aa4ac9e65d92
I noticed MacOSX SDL sets up working directory to parent of executable.
Sam Lantinga <slouken@libsdl.org>
parents:
769
diff
changeset
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71 entry_ref ref = info.ref; |
|
aa4ac9e65d92
I noticed MacOSX SDL sets up working directory to parent of executable.
Sam Lantinga <slouken@libsdl.org>
parents:
769
diff
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72 BEntry entry; |
|
aa4ac9e65d92
I noticed MacOSX SDL sets up working directory to parent of executable.
Sam Lantinga <slouken@libsdl.org>
parents:
769
diff
changeset
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73 if (B_OK == entry.SetTo(&ref)) { |
|
aa4ac9e65d92
I noticed MacOSX SDL sets up working directory to parent of executable.
Sam Lantinga <slouken@libsdl.org>
parents:
769
diff
changeset
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74 BPath path; |
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aa4ac9e65d92
I noticed MacOSX SDL sets up working directory to parent of executable.
Sam Lantinga <slouken@libsdl.org>
parents:
769
diff
changeset
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75 if (B_OK == path.SetTo(&entry)) { |
|
aa4ac9e65d92
I noticed MacOSX SDL sets up working directory to parent of executable.
Sam Lantinga <slouken@libsdl.org>
parents:
769
diff
changeset
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76 if (B_OK == path.GetParent(&path)) { |
|
aa4ac9e65d92
I noticed MacOSX SDL sets up working directory to parent of executable.
Sam Lantinga <slouken@libsdl.org>
parents:
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77 chdir(path.Path()); |
| 0 | 78 } |
| 79 } | |
|
855
aa4ac9e65d92
I noticed MacOSX SDL sets up working directory to parent of executable.
Sam Lantinga <slouken@libsdl.org>
parents:
769
diff
changeset
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80 } |
|
aa4ac9e65d92
I noticed MacOSX SDL sets up working directory to parent of executable.
Sam Lantinga <slouken@libsdl.org>
parents:
769
diff
changeset
|
81 } |
| 0 | 82 |
| 83 do { | |
| 84 SDL_Delay(10); | |
| 85 } while ( (be_app == NULL) || be_app->IsLaunching() ); | |
| 86 | |
| 87 /* Mark the application active */ | |
| 88 SDL_BeAppActive = 0; | |
| 89 } | |
| 90 | |
| 91 /* Increment the application reference count */ | |
| 92 ++SDL_BeAppActive; | |
| 93 | |
| 94 /* The app is running, and we're ready to go */ | |
| 95 return(0); | |
| 96 } | |
| 97 | |
| 98 /* Quit the Be Application, if there's nothing left to do */ | |
| 99 void SDL_QuitBeApp(void) | |
| 100 { | |
| 101 /* Decrement the application reference count */ | |
| 102 --SDL_BeAppActive; | |
| 103 | |
| 104 /* If the reference count reached zero, clean up the app */ | |
| 105 if ( SDL_BeAppActive == 0 ) { | |
| 106 if ( SDL_AppThread != NULL ) { | |
| 107 if ( be_app != NULL ) { /* Not tested */ | |
| 108 be_app->PostMessage(B_QUIT_REQUESTED); | |
| 109 } | |
| 110 SDL_WaitThread(SDL_AppThread, NULL); | |
| 111 SDL_AppThread = NULL; | |
| 112 } | |
| 113 /* be_app should now be NULL since be_app has quit */ | |
| 114 } | |
| 115 } |