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annotate src/thread/epoc/SDL_systhread.cpp @ 1012:f14e3059e138

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Date: Mon, 13 Dec 2004 21:28:18 -0500 From: Jonathan Atkins Subject: [SDL] SDL_SaveBMP width bugfix this fixes the pitch versus width difference that can happen (especially for 8bit and 24bit (with the exact RGBAmasks) surfaces) when you use SDL_SaveBMP. The problem was the pitch was used instead of the width, which in some cases is much wider than the screen area you really want to save...making for ugly crud on the saved image borders. This code has been tested with & without pitch overhangs...and with the right masks for 24 bit surfaces. I tested 8,15,16,24,32-0RGB,32-RGBA(with no SDL_SRCALPHA flag).
author Sam Lantinga <slouken@libsdl.org>
date Tue, 14 Dec 2004 06:20:49 +0000
parents f6ffac90895c
children 604d73db6802
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 //#include <stdlib.h>
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32 //#include <stdio.h>
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33
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34
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35 extern "C" {
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36 #undef NULL
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37 #include "SDL_error.h"
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38 #include "SDL_thread.h"
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39 #include "SDL_systhread.h"
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40 };
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41
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42 #include <e32std.h>
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43
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44
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45 static int object_count;
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46
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47 int RunThread(TAny* data)
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48 {
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49 SDL_RunThread(data);
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50 return(0);
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51 }
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52
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53
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54 TInt NewThread(const TDesC& aName, TAny* aPtr1, TAny* aPtr2)
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55 {
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56 return ((RThread*)(aPtr1))->Create(aName,
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57 RunThread,
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58 KDefaultStackSize,
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59 NULL,
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60 aPtr2);
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61 }
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62
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63 int CreateUnique(TInt (*aFunc)(const TDesC& aName, TAny*, TAny*), TAny* aPtr1, TAny* aPtr2)
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64 {
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65 TBuf<16> name;
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66 TInt status = KErrNone;
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67 do
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68 {
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69 object_count++;
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70 name.Format(_L("SDL_%x"), object_count);
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71 status = aFunc(name, aPtr1, aPtr2);
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72 }
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73 while(status == KErrAlreadyExists);
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74 return status;
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75 }
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76
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77
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78 int SDL_SYS_CreateThread(SDL_Thread *thread, void *args)
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79 {
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80 RThread rthread;
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81
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82 TInt status = CreateUnique(NewThread, &rthread, args);
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83 if (status != KErrNone)
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84 {
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85 delete(((RThread*)(thread->handle)));
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86 thread->handle = NULL;
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87 SDL_SetError("Not enough resources to create thread");
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88 return(-1);
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89 }
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90 rthread.Resume();
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91 thread->handle = rthread.Handle();
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92 return(0);
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93 }
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94
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95 void SDL_SYS_SetupThread(void)
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96 {
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97 return;
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98 }
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99
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100 Uint32 SDL_ThreadID(void)
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101 {
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102 RThread current;
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103 TThreadId id = current.Id();
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104 return id;
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105 }
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106
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107 void SDL_SYS_WaitThread(SDL_Thread *thread)
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108 {
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109 RUndertaker taker;
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110 taker.Create();
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111 TRequestStatus status;
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112 taker.Logon(status, thread->handle);
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113 User::WaitForRequest(status);
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114 taker.Close();
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115 }
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116
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117 /* WARNING: This function is really a last resort.
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118 * Threads should be signaled and then exit by themselves.
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119 * TerminateThread() doesn't perform stack and DLL cleanup.
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120 */
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121 void SDL_SYS_KillThread(SDL_Thread *thread)
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122 {
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123 RThread rthread;
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124 rthread.SetHandle(thread->handle);
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125 rthread.Kill(0);
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126 rthread.Close();
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127 }