Mercurial > sdl-ios-xcode
annotate include/SDL_version.h @ 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 | 04a403e4ccf5 |
| children | cca9aeb2934f |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 2 SDL - Simple DirectMedia Layer | |
|
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Updated copyright information for 2004 (Happy New Year!)
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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 | |
|
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Updated the headers with the correct e-mail address
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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 /* This header defines the current SDL version */ | |
| 29 | |
| 30 #ifndef _SDL_version_h | |
| 31 #define _SDL_version_h | |
| 32 | |
| 33 #include "SDL_types.h" | |
| 34 | |
| 35 #include "begin_code.h" | |
| 36 /* Set up for C function definitions, even when using C++ */ | |
| 37 #ifdef __cplusplus | |
| 38 extern "C" { | |
| 39 #endif | |
| 40 | |
| 41 /* Printable format: "%d.%d.%d", MAJOR, MINOR, PATCHLEVEL | |
| 42 */ | |
| 43 #define SDL_MAJOR_VERSION 1 | |
| 44 #define SDL_MINOR_VERSION 2 | |
| 884 | 45 #define SDL_PATCHLEVEL 8 |
| 0 | 46 |
|
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Date: Mon, 3 May 2004 03:15:01 +0100
Sam Lantinga <slouken@libsdl.org>
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47 typedef struct SDL_version { |
| 0 | 48 Uint8 major; |
| 49 Uint8 minor; | |
| 50 Uint8 patch; | |
| 51 } SDL_version; | |
| 52 | |
| 53 /* This macro can be used to fill a version structure with the compile-time | |
| 54 * version of the SDL library. | |
| 55 */ | |
| 56 #define SDL_VERSION(X) \ | |
| 57 { \ | |
| 58 (X)->major = SDL_MAJOR_VERSION; \ | |
| 59 (X)->minor = SDL_MINOR_VERSION; \ | |
| 60 (X)->patch = SDL_PATCHLEVEL; \ | |
| 61 } | |
| 62 | |
| 63 /* This macro turns the version numbers into a numeric value: | |
| 64 (1,2,3) -> (1203) | |
| 65 This assumes that there will never be more than 100 patchlevels | |
| 66 */ | |
| 67 #define SDL_VERSIONNUM(X, Y, Z) \ | |
| 68 (X)*1000 + (Y)*100 + (Z) | |
| 69 | |
| 70 /* This is the version number macro for the current SDL version */ | |
| 71 #define SDL_COMPILEDVERSION \ | |
| 72 SDL_VERSIONNUM(SDL_MAJOR_VERSION, SDL_MINOR_VERSION, SDL_PATCHLEVEL) | |
| 73 | |
| 74 /* This macro will evaluate to true if compiled with SDL at least X.Y.Z */ | |
| 75 #define SDL_VERSION_ATLEAST(X, Y, Z) \ | |
| 76 (SDL_COMPILEDVERSION >= SDL_VERSIONNUM(X, Y, Z)) | |
| 77 | |
| 78 /* This function gets the version of the dynamically linked SDL library. | |
| 79 it should NOT be used to fill a version structure, instead you should | |
| 80 use the SDL_Version() macro. | |
| 81 */ | |
|
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Explicitly specify the SDL API calling convention (C by default)
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82 extern DECLSPEC const SDL_version * SDLCALL SDL_Linked_Version(void); |
| 0 | 83 |
| 84 /* Ends C function definitions when using C++ */ | |
| 85 #ifdef __cplusplus | |
| 86 } | |
| 87 #endif | |
| 88 #include "close_code.h" | |
| 89 | |
| 90 #endif /* _SDL_version_h */ |