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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 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@devolution.com
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21 */
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22
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23 #ifdef SAVE_RCSID
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24 static char rcsid =
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25 "@(#) $Id$";
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26 #endif
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27
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28 #include <stdlib.h>
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29 #include <Ph.h>
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30 #include <photon/Pg.h>
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31
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32 #include "SDL_error.h"
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33 #include "SDL_endian.h"
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34 #include "SDL_ph_image_c.h"
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35
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36 //printf("%s:%s:%d\n", __FILE__, __PRETTY_FUNCTION__, __LINE__ );
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37
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38 /* Various screen update functions available */
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39 //static void ph_NormalUpdate(_THIS, int numrects, SDL_Rect *rects);
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40 //static void ph_DummyUpdate(_THIS, int numrects, SDL_Rect *rects);
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41
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42 int ph_SetupImage(_THIS, SDL_Surface *screen)
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43 {
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44 int type = 0;
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45
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46 /* Determine image type */
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47 switch(screen->format->BitsPerPixel)
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48 {
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49 case 8:{
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50 type = Pg_IMAGE_PALETTE_BYTE;
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51 }
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52 break;
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53 case 15:{
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54 type = Pg_IMAGE_DIRECT_555;
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55 }
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56 break;
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57 case 16:{
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58 type = Pg_IMAGE_DIRECT_565;
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59 }
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60 break;
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61
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62 case 24:{
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63 type = Pg_IMAGE_DIRECT_888;
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64 }
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65 break;
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66
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67 case 32:{
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68 type = Pg_IMAGE_DIRECT_8888;
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69 }
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70 break;
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71 default:{
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72 /* should never get here */
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73 fprintf(stderr,"error: unsupported bbp = %d\n",
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74 screen->format->BitsPerPixel);
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75 return -1;
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76 }
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77 break;
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78 }
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79
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80 //using shared memory for speed (set last param to 1)
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81 if ((SDL_Image = PhCreateImage( NULL, screen->w, screen->h, type, NULL, 0, 1 ))
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82 == NULL)
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83 {
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84 fprintf(stderr,"error: PhCreateImage failed.\n");
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85 return -1;
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86 }
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87
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88 screen->pixels = SDL_Image->image;
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89
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90 this->UpdateRects = ph_NormalUpdate;
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91
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92 return 0;
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93 }
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94
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95 int ph_SetupOCImage(_THIS, SDL_Surface *screen) //Offscreen context
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96 {
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97 int type = 0;
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98
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99 /* Determine image type */
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100 switch(screen->format->BitsPerPixel)
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101 {
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102 case 8:{
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103 type = Pg_IMAGE_PALETTE_BYTE;
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104 }
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105 break;
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106 case 15:{
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107 type = Pg_IMAGE_DIRECT_555;
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108 }
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109 break;
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110 case 16:{
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111 type = Pg_IMAGE_DIRECT_565;
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112 }
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113 break;
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114
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115 case 24:{
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116 type = Pg_IMAGE_DIRECT_888;
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117 }
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118 break;
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119
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120 case 32:{
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121 type = Pg_IMAGE_DIRECT_8888;
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122 }
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123 break;
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124 default:{
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125 /* should never get here */
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126 fprintf(stderr,"error: unsupported bbp = %d\n",
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127 screen->format->BitsPerPixel);
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128 return -1;
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129 }
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130 break;
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131 }
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132
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133 OCImage.FrameData0 = (FRAMEDATA *) malloc((size_t)(sizeof( FRAMEDATA)));
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134 OCImage.FrameData1 = (FRAMEDATA *) malloc((size_t)(sizeof( FRAMEDATA)));
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135
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136 if(OCImage.direct_context == NULL)
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137 OCImage.direct_context = PdCreateDirectContext();
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138
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139 OCImage.offscreen_context = PdCreateOffscreenContext(0,screen->w,screen->h, Pg_OSC_MEM_PAGE_ALIGN);
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140
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141 if (OCImage.offscreen_context == NULL)
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142 {
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143 printf("PdCreateOffscreenContext failed\n");
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144 return -1;
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145 }
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146
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147 OCImage.Stride = OCImage.offscreen_context->pitch;
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148
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149 if (OCImage.flags & SDL_DOUBLEBUF)
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150 printf("hardware flag for doublebuf offscreen context\n");
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151
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152
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153 OCImage.dc_ptr.ptr8 = (unsigned char *) PdGetOffscreenContextPtr(OCImage.offscreen_context);
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154
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155 OCImage.CurrentFrameData = OCImage.FrameData0;
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156 OCImage.CurrentFrameData->Y = OCImage.dc_ptr.ptr8;
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157 OCImage.CurrentFrameData->U = NULL;
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158 OCImage.CurrentFrameData->V = NULL;
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159 OCImage.current = 0;
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160
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161 if(OCImage.dc_ptr.ptr8 == NULL)
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162 {
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163 printf("PdGetOffscreenContextPtr failed\n");
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164 return -1;
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165 }
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166
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167 PhDCSetCurrent(OCImage.offscreen_context);
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168
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169 screen->pixels = OCImage.CurrentFrameData->Y;
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170
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171 this->UpdateRects = ph_OCUpdate;
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172
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173 return 0;
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174 }
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175
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176
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177 void ph_DestroyImage(_THIS, SDL_Surface *screen)
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178 {
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179
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180
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181 if(SDL_Image == NULL)
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182 return;
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183
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184 if (OCImage.offscreen_context != NULL)
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185 {
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186
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187 PhDCRelease(OCImage.offscreen_context);
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188 OCImage.offscreen_context = NULL;
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189 free(OCImage.FrameData0);
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190 OCImage.FrameData0 = NULL;
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191 free(OCImage.FrameData1);
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192 OCImage.FrameData1 = NULL;
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193 }
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194
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195 if (SDL_Image->image)
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196 {
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197 //free(SDL_Image->image);
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198 //SDL_Image->image = NULL;
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199 PhReleaseImage(SDL_Image);
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200 SDL_Image = NULL;
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201 }
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202
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203 if ( screen ) {
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204 screen->pixels = NULL;
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205 }
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206
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207 SDL_Image = NULL;
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208 }
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209
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210 int ph_ResizeImage(_THIS, SDL_Surface *screen, Uint32 flags)
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211 {
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212
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213 ph_DestroyImage(this, screen);
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214
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215 if( flags & SDL_HWSURFACE)
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216 {
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217 OCImage.flags = flags; //needed for SDL_DOUBLEBUF check
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218 return ph_SetupOCImage(this,screen);
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219 }
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220 else if(flags & SDL_OPENGL) /* No image when using GL */
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221 {
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222 return 0;
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223 }
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224 else
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225 {
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226 return ph_SetupImage(this, screen);
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227 }
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228
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229 }
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230
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231 int ph_AllocHWSurface(_THIS, SDL_Surface *surface)
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232 {
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233
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234 return(-1);
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235 }
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236
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237 void ph_FreeHWSurface(_THIS, SDL_Surface *surface)
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238 {
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239
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240 return;
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241 }
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242
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243 int ph_FlipHWSurface(_THIS, SDL_Surface *surface)
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244 {
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245
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246 return(0);
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247 }
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248
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249 int ph_LockHWSurface(_THIS, SDL_Surface *surface)
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250 {
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251
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252 if ( (surface == SDL_VideoSurface) && blit_queued ) {
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253 // XSync(GFX_Display, False);
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254 PgFlush();
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255 blit_queued = 0;
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256 }
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257 return(0);
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258 }
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259
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260 void ph_UnlockHWSurface(_THIS, SDL_Surface *surface)
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261 {
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262
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263 return;
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264 }
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265
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266 static PhPoint_t ph_pos;
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267 static PhRect_t ph_rect;
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268 static int i;
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269
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270 void ph_NormalUpdate(_THIS, int numrects, SDL_Rect *rects)
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271 {
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272
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273 for ( i=0; i<numrects; ++i )
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274 {
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275 if ( rects[i].w == 0 ) { /* Clipped? */
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276 continue;
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277 }
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278
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279 ph_pos.x = rects[i].x;
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280 ph_pos.y = rects[i].y;
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281 ph_rect.ul.x = rects[i].x;
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282 ph_rect.ul.y = rects[i].y;
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283 ph_rect.lr.x = rects[i].x + rects[i].w;
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284 ph_rect.lr.y = rects[i].y + rects[i].h;
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285
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286 if (PgDrawPhImageRectmx( &ph_pos, SDL_Image, &ph_rect, 0 ) < 0)
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287 {
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288 fprintf(stderr,"error: PgDrawPhImageRectmx failed.\n");
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289 }
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290 }
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291 if (PgFlush() < 0)
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292 {
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293 fprintf(stderr,"error: PgFlush failed.\n");
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294 }
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295 }
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296 void ph_OCUpdate(_THIS, int numrects, SDL_Rect *rects)
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297 {
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298 PhPoint_t zero = {0};
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299 PhRect_t src_rect;
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300 PhRect_t dest_rect;
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301
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302 if(OCImage.direct_context == NULL)
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303 {
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304 return;
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305 }
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306
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307 PgSetRegion(PtWidgetRid(window));
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308 PgSetClipping(0,NULL);
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309 PgWaitHWIdle();
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310
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311
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312 for ( i=0; i<numrects; ++i )
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313 {
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314 if ( rects[i].w == 0 ) { /* Clipped? */
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315 continue;
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316 }
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317
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318 src_rect.ul.x=rects[i].x;
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319 src_rect.ul.y=rects[i].y;
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320 dest_rect.ul.x=rects[i].x;
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321 dest_rect.ul.y=rects[i].y;
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322
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323 dest_rect.lr.x=src_rect.lr.x= rects[i].x +rects[i].w;
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324 dest_rect.lr.y=src_rect.lr.y= rects[i].y +rects[i].h;
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325
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326 zero.x = zero.y = 0;
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327 PgSetTranslation (&zero, 0);
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328 PgSetRegion(PtWidgetRid(window));
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329 PgSetClipping(0,NULL);
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330 PgContextBlitArea(OCImage.offscreen_context, (PhArea_t *)(&src_rect), NULL, (PhArea_t *)(&dest_rect));
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331
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332 }
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333 if (PgFlush() < 0)
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334 {
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335 fprintf(stderr,"error: PgFlush failed.\n");
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336 }
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337
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338 //later used to toggling double buffer
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339 if(OCImage.current == 0)
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340 {
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341 OCImage.CurrentFrameData = OCImage.FrameData0;
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342 }
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343 else
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344 {
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345 OCImage.CurrentFrameData = OCImage.FrameData1;
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346 }
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347 }
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348
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