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annotate src/video/directfb/SDL_DirectFB_dyn.c @ 4593:3892fe2f6537

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Fixed so many things. See the changelog listed below. 1. Use SDL_X11_HAVE_XRENDER to check for RENDER at runtime. 2. Added lots of comments. 3. Added checks and lots of calls to SDL_SetError(). 4. Fixed X11_CreateTexture() so that the pixmap and image created are for the format specified by the user and not the window format. This is only for the RENDER case. 5. The above change required that functions to convert SDL pixel format enums to Visuals and XRenderPictFormats be added. 6. Fixed lots of 'style' issues.
author Sunny Sachanandani <sunnysachanandani@gmail.com>
date Sat, 17 Jul 2010 15:38:24 +0530
parents f7b03b6838cb
children b196d2758026
rev   line source
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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997-2010 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 Lesser General Public
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7 License as published by the Free Software Foundation; either
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8 version 2.1 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 Lesser 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 Lesser General Public
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16 License along with this library; if not, write to the Free Software
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17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 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 #include "SDL_config.h"
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23
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24 #include "SDL_DirectFB_video.h"
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25 #include "SDL_DirectFB_dyn.h"
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26
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27 #ifdef SDL_VIDEO_DRIVER_DIRECTFB_DYNAMIC
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28 #include "SDL_name.h"
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29 #include "SDL_loadso.h"
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30
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31 #define DFB_SYM(ret, name, args, al, func) ret (*name) args;
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32 static struct _SDL_DirectFB_Symbols
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33 {
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34 DFB_SYMS const unsigned int *directfb_major_version;
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35 const unsigned int *directfb_minor_version;
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36 const unsigned int *directfb_micro_version;
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37 } SDL_DirectFB_Symbols;
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38 #undef DFB_SYM
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39
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40 #define DFB_SYM(ret, name, args, al, func) ret name args { func SDL_DirectFB_Symbols.name al ; }
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41 DFB_SYMS
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42 #undef DFB_SYM
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43 static void *handle = NULL;
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44
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45 int
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46 SDL_DirectFB_LoadLibrary(void)
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47 {
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48 int retval = 0;
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49
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50 if (handle == NULL) {
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51 handle = SDL_LoadObject(SDL_VIDEO_DRIVER_DIRECTFB_DYNAMIC);
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52 if (handle != NULL) {
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53 retval = 1;
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54 #define DFB_SYM(ret, name, args, al, func) if (!(SDL_DirectFB_Symbols.name = SDL_LoadFunction(handle, # name))) retval = 0;
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55 DFB_SYMS
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56 #undef DFB_SYM
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57 if (!
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58 (SDL_DirectFB_Symbols.directfb_major_version =
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59 SDL_LoadFunction(handle, "directfb_major_version")))
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60 retval = 0;
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61 if (!
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62 (SDL_DirectFB_Symbols.directfb_minor_version =
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63 SDL_LoadFunction(handle, "directfb_minor_version")))
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64 retval = 0;
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65 if (!
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66 (SDL_DirectFB_Symbols.directfb_micro_version =
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67 SDL_LoadFunction(handle, "directfb_micro_version")))
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68 retval = 0;
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69 }
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70 }
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71 if (retval) {
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72 const char *stemp = DirectFBCheckVersion(DIRECTFB_MAJOR_VERSION,
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73 DIRECTFB_MINOR_VERSION,
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74 DIRECTFB_MICRO_VERSION);
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75 /* Version Check */
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76 if (stemp != NULL) {
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77 fprintf(stderr,
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78 "DirectFB Lib: Version mismatch. Compiled: %d.%d.%d Library %d.%d.%d\n",
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79 DIRECTFB_MAJOR_VERSION, DIRECTFB_MINOR_VERSION,
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80 DIRECTFB_MICRO_VERSION,
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81 *SDL_DirectFB_Symbols.directfb_major_version,
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82 *SDL_DirectFB_Symbols.directfb_minor_version,
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83 *SDL_DirectFB_Symbols.directfb_micro_version);
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84 retval = 0;
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85 }
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86 }
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87 if (!retval)
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88 SDL_DirectFB_UnLoadLibrary();
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89 return retval;
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90 }
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91
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92 void
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93 SDL_DirectFB_UnLoadLibrary(void)
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94 {
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95 if (handle != NULL) {
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96 SDL_UnloadObject(handle);
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97 handle = NULL;
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98 }
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99 }
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100
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101 #else
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102 int
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103 SDL_DirectFB_LoadLibrary(void)
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104 {
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105 return 1;
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106 }
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107
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108 void
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109 SDL_DirectFB_UnLoadLibrary(void)
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110 {
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111 }
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112 #endif