annotate src/timer/epoc/SDL_systimer.cpp @ 821:30168104389f

Date: Sat, 14 Feb 2004 14:52:40 +0200 From: "Mike Gorchak" Subject: Batch of the QNX6 fixes for the SDL 1. Updated readme.QNX 2. Fixed crashes during intensive window updating under fast machines (got over 200 rectangles for update). 3. Fixed double-buffered fullscreen modes, now it works as needed. 4. Fixed Photon detection algorithm. 5. Fixed HWSURFACE update function. 6. Added SDL_PHOTON_FULLSCREEN_REFRESH environment variable support for control refresh rates under Photon. 7. Added 640x400 fullscreen mode emulation via 640x480 (if videodriver not supports original 640x400 mode of course) shifted by 40 vertical pixels from begin, to center it. It's needed for some old DOS games which ran in doubled 320x200 mode. 8. Added available video ram amount support. 8. Added hardware surface allocation/deallocation support if current videomode and videodriver supports it. 9. Added hardware filling support. 10. Added hardware blits support (simple and colorkeyed). And I've added to testvidinfo test color-keyed blits benchmark (maybe need to add alpha blits benchmark too ?). Currently Photon not supporting any alpha hardware blittings (all drivers lack of alpha blitting code support, only software alpha blitting exist in photon, which is hundreds times slowest than the SDL's one). So I've not added the alpha support. I suppose new QNX 6.3 will have the hardware alpha support, so when it will be done, I'll add alpha support.
author Sam Lantinga <slouken@libsdl.org>
date Sat, 14 Feb 2004 20:22:21 +0000
parents f6ffac90895c
children 19418e4422cb
rev   line source
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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002 Sam Lantinga
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4
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5 This library is free software; you can redistribute it and/or
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6 modify it under the terms of the GNU Library General Public
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7 License as published by the Free Software Foundation; either
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8 version 2 of the License, or (at your option) any later version.
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9
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10 This library is distributed in the hope that it will be useful,
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11 but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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13 Library General Public License for more details.
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14
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15 You should have received a copy of the GNU Library General Public
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16 License along with this library; if not, write to the Free
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17 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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18
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19 Sam Lantinga
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20 slouken@libsdl.org
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21 */
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22
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23 /*
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24 SDL_systimer.cpp
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25
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26 Epoc version by Hannu Viitala (hannu.j.viitala@mbnet.fi)
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27 */
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28
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29 #include <e32std.h>
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30 #include <e32hal.h>
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31
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32 extern "C" {
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33 #include "SDL_error.h"
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34 #include "SDL_thread.h"
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35 #include "SDL_timer.h"
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36 #include "SDL_timer_c.h"
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37
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38 static TUint start = 0;
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39 static TInt tickPeriodMilliSeconds;
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40
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41
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42 void SDL_StartTicks(void)
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43 {
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44 /* Set first ticks value */
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45 start = User::TickCount();
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46
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47 TTimeIntervalMicroSeconds32 period;
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48 TInt tmp = UserHal::TickPeriod(period);
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49 tickPeriodMilliSeconds = period.Int() / 1000;
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50 }
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51
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52 Uint32 SDL_GetTicks(void)
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53 {
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54 TUint deltaTics = User::TickCount() - start;
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55 return(deltaTics * tickPeriodMilliSeconds);
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56 }
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57
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58 void SDL_Delay(Uint32 ms)
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59 {
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60
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61 User::After(TTimeIntervalMicroSeconds32(ms*1000));
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62 }
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63
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64 /* Data to handle a single periodic alarm */
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65 static int timer_alive = 0;
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66 static SDL_Thread *timer = NULL;
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67
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68 static int RunTimer(void *unused)
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69 {
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70 Uint32 ms;
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71
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72 while ( timer_alive ) {
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73 if ( SDL_timer_running ) {
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74 SDL_ThreadedTimerCheck();
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75 }
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76 SDL_Delay(10);
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77 }
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78 return(0);
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79 }
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80
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81 /* This is only called if the event thread is not running */
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82 int SDL_SYS_TimerInit(void)
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83 {
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84 timer_alive = 1;
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85 timer = SDL_CreateThread(RunTimer, NULL);
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86 if ( timer == NULL )
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87 return(-1);
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88 return(SDL_SetTimerThreaded(1));
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89 }
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90
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91 void SDL_SYS_TimerQuit(void)
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92 {
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93 timer_alive = 0;
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94 if ( timer ) {
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95 SDL_WaitThread(timer, NULL);
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96 timer = NULL;
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97 }
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98 }
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99
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100 int SDL_SYS_StartTimer(void)
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101 {
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102 SDL_SetError("Internal logic error: Epoc uses threaded timer");
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103 return(-1);
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104 }
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105
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106 void SDL_SYS_StopTimer(void)
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107 {
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108 return;
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109 }
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110
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111 }; // extern "C"