Mercurial > sdl-ios-xcode
annotate src/timer/macos/SDL_MPWtimer.c @ 1076:8d3b95ece376
[PATCH] SDL_GetVideoMode() do not find the best video mode
The current GetVideoMode() function stops at the first mode which has any
dimensions smaller than the one asked, and gives the previous in the list.
If I ask 336x224 with this list:
768x480 768x240 640x400 640x200 384x480 384x240 320x400 320x200
SDL will give me 640x400, because 640x200 as height smaller than what I
asked.
However the best mode is the smaller which has both dimensions bigger
than the one asked (384x240 in my example).
This patch fixes this, plus it does not rely on a sorted video mode list.
| author | Patrice Mandin <patmandin@gmail.com> |
|---|---|
| date | Sun, 12 Jun 2005 16:12:55 +0000 |
| parents | b8d311d90021 |
| children | c9b51268668f |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 2 SDL - Simple DirectMedia Layer | |
|
769
b8d311d90021
Updated copyright information for 2004 (Happy New Year!)
Sam Lantinga <slouken@libsdl.org>
parents:
297
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changeset
|
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
e8157fcb3114
Updated the source with the correct e-mail address
Sam Lantinga <slouken@libsdl.org>
parents:
0
diff
changeset
|
20 slouken@libsdl.org |
| 0 | 21 */ |
| 22 | |
| 23 #ifdef SAVE_RCSID | |
| 24 static char rcsid = | |
| 25 "@(#) $Id$"; | |
| 26 #endif | |
| 27 | |
| 28 #include <Types.h> | |
| 29 #include <Timer.h> | |
| 30 #include <OSUtils.h> | |
| 31 #include <Gestalt.h> | |
| 32 #include <Processes.h> | |
| 33 | |
| 34 #include <LowMem.h> | |
| 35 | |
| 36 #include "SDL_timer.h" | |
| 37 #include "SDL_timer_c.h" | |
| 38 | |
| 39 #define MS_PER_TICK (1000/60) /* MacOS tick = 1/60 second */ | |
| 40 | |
| 41 /* Note: This is only a step above the original 1/60s implementation. | |
| 42 * For a good implementation, see FastTimes.[ch], by Matt Slot. | |
| 43 */ | |
| 44 #define USE_MICROSECONDS | |
| 45 #define WideTo64bit(w) (*(UInt64 *) &(w)) | |
| 46 | |
| 47 UInt64 start; | |
| 48 | |
| 49 void SDL_StartTicks(void) | |
| 50 { | |
| 51 #ifdef USE_MICROSECONDS | |
| 52 UnsignedWide now; | |
| 53 | |
| 54 Microseconds(&now); | |
| 55 start = WideTo64bit(now); | |
| 56 #else | |
| 57 /* FIXME: Should we implement a wrapping algorithm, like Win32? */ | |
| 58 #endif | |
| 59 } | |
| 60 | |
| 61 Uint32 SDL_GetTicks(void) | |
| 62 { | |
| 63 #ifdef USE_MICROSECONDS | |
| 64 UnsignedWide now; | |
| 65 | |
| 66 Microseconds(&now); | |
| 67 return (Uint32)((WideTo64bit(now)-start)/1000); | |
| 68 #else | |
| 69 return(LMGetTicks()*MS_PER_TICK); | |
| 70 #endif | |
| 71 } | |
| 72 | |
| 73 void SDL_Delay(Uint32 ms) | |
| 74 { | |
| 75 #ifdef USE_MICROSECONDS | |
| 76 Uint32 end_ms; | |
| 77 | |
| 78 end_ms = SDL_GetTicks() + ms; | |
| 79 do { | |
| 80 /* FIXME: Yield CPU? */ ; | |
| 81 } while ( SDL_GetTicks() < end_ms ); | |
| 82 #else | |
| 83 UInt32 unused; /* MJS */ | |
| 84 Delay(ms/MS_PER_TICK, &unused); | |
| 85 #endif | |
| 86 } | |
| 87 | |
| 88 | |
| 89 /* Data to handle a single periodic alarm */ | |
| 90 typedef struct _ExtendedTimerRec | |
| 91 { | |
| 92 TMTask tmTask; | |
| 93 ProcessSerialNumber taskPSN; | |
| 94 } ExtendedTimerRec, *ExtendedTimerPtr; | |
| 95 | |
| 96 static ExtendedTimerRec gExtendedTimerRec; | |
| 97 | |
| 98 | |
| 99 int SDL_SYS_TimerInit(void) | |
| 100 { | |
| 101 /* We don't need a setup? */ | |
| 102 return(0); | |
| 103 } | |
| 104 | |
| 105 void SDL_SYS_TimerQuit(void) | |
| 106 { | |
| 107 /* We don't need a cleanup? */ | |
| 108 return; | |
| 109 } | |
| 110 | |
| 111 /* Our Stub routine to set up and then call the real routine. */ | |
| 112 pascal void TimerCallbackProc(TMTaskPtr tmTaskPtr) | |
| 113 { | |
| 114 Uint32 ms; | |
| 115 | |
| 116 WakeUpProcess(&((ExtendedTimerPtr) tmTaskPtr)->taskPSN); | |
| 117 | |
| 118 ms = SDL_alarm_callback(SDL_alarm_interval); | |
| 119 if ( ms ) { | |
| 120 SDL_alarm_interval = ROUND_RESOLUTION(ms); | |
| 121 PrimeTime((QElemPtr)&gExtendedTimerRec.tmTask, | |
| 122 SDL_alarm_interval); | |
| 123 } else { | |
| 124 SDL_alarm_interval = 0; | |
| 125 } | |
| 126 } | |
| 127 | |
| 128 int SDL_SYS_StartTimer(void) | |
| 129 { | |
| 130 /* | |
| 131 * Configure the global structure that stores the timing information. | |
| 132 */ | |
| 133 gExtendedTimerRec.tmTask.qLink = NULL; | |
| 134 gExtendedTimerRec.tmTask.qType = 0; | |
| 135 gExtendedTimerRec.tmTask.tmAddr = NewTimerUPP(TimerCallbackProc); | |
| 136 gExtendedTimerRec.tmTask.tmCount = 0; | |
| 137 gExtendedTimerRec.tmTask.tmWakeUp = 0; | |
| 138 gExtendedTimerRec.tmTask.tmReserved = 0; | |
| 139 GetCurrentProcess(&gExtendedTimerRec.taskPSN); | |
| 140 | |
| 141 /* Install the task record */ | |
| 142 InsXTime((QElemPtr)&gExtendedTimerRec.tmTask); | |
| 143 | |
| 144 /* Go! */ | |
| 145 PrimeTime((QElemPtr)&gExtendedTimerRec.tmTask, SDL_alarm_interval); | |
| 146 return(0); | |
| 147 } | |
| 148 | |
| 149 void SDL_SYS_StopTimer(void) | |
| 150 { | |
| 151 RmvTime((QElemPtr)&gExtendedTimerRec.tmTask); | |
| 152 } |