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annotate src/thread/epoc/SDL_systhread.cpp @ 1554:0ca607a5d173

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Fixed bug #84 Date: Sun, 23 Oct 2005 16:39:03 +0200 From: "A. Schmid" <sahib@phreaker.net> Subject: [SDL] no software surfaces with svgalib driver? Hi, I noticed that the SDL (1.2.9) svgalib driver only makes use of linear addressable (framebuffer) video modes. On older systems (like one of mine), linear addressable modes are often not available. Especially for cards with VESA VBE < 2.0 the svgalib vesa driver is unusable, since VESA only supports framebuffering for VBE 2.0 and later. The changes necessary to add support for software surfaces seem to be relatively small. I only had to hack src/video/svga/SDL_svgavideo.c (see attached patch). The code worked fine for me, but it is no more than a proof of concept and should be reviewed (probably has a memory leak when switching modes). It also uses the vgagl library (included in the svgalib package) and needs to be linked against it. -Alex
author Sam Lantinga <slouken@libsdl.org>
date Sun, 19 Mar 2006 12:04:40 +0000
parents 19418e4422cb
children 92947e3a18db
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_systhread.cpp
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25 Epoc thread management routines for SDL
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26
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27 Epoc version by Markus Mertama (w@iki.fi)
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28 */
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29
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30
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31 extern "C" {
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32 #undef NULL
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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_systhread.h"
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36 };
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37
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38 #include <e32std.h>
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39
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40
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41 static int object_count;
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42
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43 int RunThread(TAny* data)
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44 {
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45 SDL_RunThread(data);
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46 return(0);
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47 }
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48
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49
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50 TInt NewThread(const TDesC& aName, TAny* aPtr1, TAny* aPtr2)
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51 {
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52 return ((RThread*)(aPtr1))->Create(aName,
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53 RunThread,
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54 KDefaultStackSize,
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55 NULL,
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56 aPtr2);
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57 }
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58
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59 int CreateUnique(TInt (*aFunc)(const TDesC& aName, TAny*, TAny*), TAny* aPtr1, TAny* aPtr2)
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60 {
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61 TBuf<16> name;
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62 TInt status = KErrNone;
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63 do
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64 {
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65 object_count++;
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66 name.Format(_L("SDL_%x"), object_count);
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67 status = aFunc(name, aPtr1, aPtr2);
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68 }
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69 while(status == KErrAlreadyExists);
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70 return status;
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71 }
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72
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73
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74 int SDL_SYS_CreateThread(SDL_Thread *thread, void *args)
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75 {
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76 RThread rthread;
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77
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78 TInt status = CreateUnique(NewThread, &rthread, args);
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79 if (status != KErrNone)
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80 {
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81 delete(((RThread*)(thread->handle)));
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82 thread->handle = NULL;
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83 SDL_SetError("Not enough resources to create thread");
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84 return(-1);
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85 }
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86 rthread.Resume();
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87 thread->handle = rthread.Handle();
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88 return(0);
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89 }
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90
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91 void SDL_SYS_SetupThread(void)
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92 {
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93 return;
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94 }
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95
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96 Uint32 SDL_ThreadID(void)
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97 {
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98 RThread current;
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99 TThreadId id = current.Id();
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100 return id;
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101 }
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102
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103 void SDL_SYS_WaitThread(SDL_Thread *thread)
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104 {
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105 RUndertaker taker;
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106 taker.Create();
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107 TRequestStatus status;
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108 taker.Logon(status, thread->handle);
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109 User::WaitForRequest(status);
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110 taker.Close();
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111 }
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112
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113 /* WARNING: This function is really a last resort.
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114 * Threads should be signaled and then exit by themselves.
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115 * TerminateThread() doesn't perform stack and DLL cleanup.
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116 */
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117 void SDL_SYS_KillThread(SDL_Thread *thread)
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118 {
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119 RThread rthread;
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120 rthread.SetHandle(thread->handle);
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121 rthread.Kill(0);
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122 rthread.Close();
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123 }