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1 /* |
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2 SDL - Simple DirectMedia Layer |
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3 Copyright (C) 1997-2006 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 <nds.h> |
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25 #include <nds/registers_alt.h> |
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26 #include "SDL.h" |
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27 #include "SDL_error.h" |
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28 #include "SDL_video.h" |
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29 #include "SDL_mouse.h" |
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30 #include "../SDL_sysvideo.h" |
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31 #include "../SDL_pixels_c.h" |
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32 #include "../../events/SDL_events_c.h" |
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33 |
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34 #include "SDL_ndsvideo.h" |
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35 #include "SDL_ndsevents_c.h" |
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36 #include "SDL_ndsmouse_c.h" |
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37 |
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38 #define NDSVID_DRIVER_NAME "nds" |
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39 |
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40 /* Initialization/Query functions */ |
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41 static int NDS_VideoInit(_THIS, SDL_PixelFormat *vformat); |
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42 static SDL_Rect **NDS_ListModes(_THIS, SDL_PixelFormat *format, Uint32 flags); |
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43 static SDL_Surface *NDS_SetVideoMode(_THIS, SDL_Surface *current, int width, int height, int bpp, Uint32 flags); |
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44 static int NDS_SetColors(_THIS, int firstcolor, int ncolors, SDL_Color *colors); |
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45 static void NDS_VideoQuit(_THIS); |
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46 |
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47 /* Hardware surface functions */ |
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48 static int NDS_AllocHWSurface(_THIS, SDL_Surface *surface); |
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49 static int NDS_LockHWSurface(_THIS, SDL_Surface *surface); |
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50 static int NDS_FlipHWSurface(_THIS, SDL_Surface *surface); |
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51 static void NDS_UnlockHWSurface(_THIS, SDL_Surface *surface); |
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52 static void NDS_FreeHWSurface(_THIS, SDL_Surface *surface); |
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53 |
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54 /* etc. */ |
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55 static void NDS_UpdateRects(_THIS, int numrects, SDL_Rect *rects); |
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56 |
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57 /* NDS driver bootstrap functions */ |
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58 |
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59 static int NDS_Available(void) |
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60 { |
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61 return(1); |
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62 } |
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63 |
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64 static void NDS_DeleteDevice(SDL_VideoDevice *device) |
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65 { |
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66 SDL_free(device->hidden); |
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67 SDL_free(device); |
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68 } |
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69 |
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70 void on_irq_vblank() |
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71 { |
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72 // Disable interrupts |
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73 //REG_IME = 0; |
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74 scanKeys(); |
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75 |
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76 // VBLANK_INTR_WAIT_FLAGS |= IRQ_VBLANK; |
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77 // REG_IF |= IRQ_VBLANK; |
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78 //REG_IF = REG_IF; |
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79 |
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80 // Enable interrupts |
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81 //REG_IME = 1; |
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82 } |
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83 |
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84 static int HWAccelBlit(SDL_Surface *src, SDL_Rect *srcrect, |
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85 SDL_Surface *dst, SDL_Rect *dstrect) |
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86 { |
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87 return 0; |
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88 } |
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89 |
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90 static int CheckHWBlit(_THIS, SDL_Surface *src, SDL_Surface *dst) |
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91 { |
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92 if (src->flags & SDL_SRCALPHA) return false; |
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93 if (src->flags & SDL_SRCCOLORKEY) return false; |
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94 if (src->flags & SDL_HWPALETTE ) return false; |
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95 if (dst->flags & SDL_SRCALPHA) return false; |
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96 if (dst->flags & SDL_SRCCOLORKEY) return false; |
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97 if (dst->flags & SDL_HWPALETTE ) return false; |
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98 |
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99 if (src->format->BitsPerPixel != dst->format->BitsPerPixel) return false; |
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100 if (src->format->BytesPerPixel != dst->format->BytesPerPixel) return false; |
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101 |
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102 src->map->hw_blit = HWAccelBlit; |
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103 return true; |
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104 } |
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105 |
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106 static SDL_VideoDevice *NDS_CreateDevice(int devindex) |
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107 { |
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108 SDL_VideoDevice *device=0; |
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109 |
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110 |
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111 /* Initialize all variables that we clean on shutdown */ |
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112 device = (SDL_VideoDevice *)SDL_malloc(sizeof(SDL_VideoDevice)); |
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113 if ( device ) { |
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114 SDL_memset(device, 0, (sizeof *device)); |
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115 device->hidden = (struct SDL_PrivateVideoData *) |
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116 SDL_malloc((sizeof *device->hidden)); |
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117 } |
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118 if ( (device == NULL) || (device->hidden == NULL) ) { |
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119 SDL_OutOfMemory(); |
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120 if ( device ) { |
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121 SDL_free(device); |
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122 } |
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123 return(0); |
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124 } |
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125 SDL_memset(device->hidden, 0, (sizeof *device->hidden)); |
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126 |
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127 /* Set the function pointers */ |
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128 device->VideoInit = NDS_VideoInit; |
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129 device->ListModes = NDS_ListModes; |
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130 device->SetVideoMode = NDS_SetVideoMode; |
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131 device->CreateYUVOverlay = NULL; |
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132 device->SetColors = NDS_SetColors; |
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133 device->UpdateRects = NDS_UpdateRects; |
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134 device->VideoQuit = NDS_VideoQuit; |
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135 device->AllocHWSurface = NDS_AllocHWSurface; |
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136 device->CheckHWBlit = CheckHWBlit; |
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137 device->FillHWRect = NULL; |
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138 device->SetHWColorKey = NULL; |
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139 device->SetHWAlpha = NULL; |
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140 device->LockHWSurface = NDS_LockHWSurface; |
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141 device->UnlockHWSurface = NDS_UnlockHWSurface; |
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142 device->FlipHWSurface = NDS_FlipHWSurface; |
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143 device->FreeHWSurface = NDS_FreeHWSurface; |
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144 device->SetCaption = NULL; |
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145 device->SetIcon = NULL; |
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146 device->IconifyWindow = NULL; |
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147 device->GrabInput = NULL; |
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148 device->GetWMInfo = NULL; |
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149 device->InitOSKeymap = NDS_InitOSKeymap; |
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150 device->PumpEvents = NDS_PumpEvents; |
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151 device->info.blit_hw=1; |
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152 |
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153 device->free = NDS_DeleteDevice; |
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154 return device; |
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155 } |
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156 |
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157 VideoBootStrap NDS_bootstrap = { |
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158 NDSVID_DRIVER_NAME, "SDL NDS video driver", |
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159 NDS_Available, NDS_CreateDevice |
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160 }; |
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161 |
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162 u16* frontBuffer;// = (u16*)(0x06000000); |
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163 u16* backBuffer;// = (u16*)(0x06000000 + 256 * 256 * 2); |
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164 int NDS_VideoInit(_THIS, SDL_PixelFormat *vformat) |
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165 { |
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166 //printf("WARNING: You are using the SDL NDS video driver!\n"); |
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167 |
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168 /* Determine the screen depth (use default 8-bit depth) */ |
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169 /* we change this during the SDL_SetVideoMode implementation... */ |
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170 vformat->BitsPerPixel = 16; // mode 3 |
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171 vformat->BytesPerPixel = 2; |
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172 vformat->Rmask = 0x0000f800; |
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173 vformat->Gmask = 0x000007e0; |
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174 vformat->Bmask = 0x0000001f; |
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175 powerON(POWER_ALL); |
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176 irqInit(); |
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177 irqSet(IRQ_VBLANK, on_irq_vblank); |
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178 irqEnable(IRQ_VBLANK); |
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179 |
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180 //set the mode for 2 text layers and two extended background layers |
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181 //videoSetMode(MODE_5_2D | DISPLAY_BG3_ACTIVE); |
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182 videoSetMode(MODE_6_2D| DISPLAY_BG2_ACTIVE); |
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183 |
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184 //set the sub background up for text display (we could just print to one |
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185 //of the main display text backgrounds just as easily |
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186 videoSetModeSub(MODE_0_2D | DISPLAY_BG0_ACTIVE); //sub bg 0 will be used to print text |
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187 |
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188 //set the first two banks as background memory and the third as sub background memory |
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189 //D is not used..if you need a bigger background then you will need to map |
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190 //more vram banks consecutivly (VRAM A-D are all 0x20000 bytes in size) |
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191 //vramSetMainBanks(VRAM_A_MAIN_BG_0x6000000, VRAM_B_MAIN_BG_0x6020000,VRAM_C_SUB_BG , VRAM_D_LCD); |
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192 vramSetMainBanks(VRAM_A_MAIN_BG,VRAM_B_MAIN_BG,VRAM_C_MAIN_BG,VRAM_D_MAIN_BG); |
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193 //vramSetBankA(VRAM_A_MAIN_BG); |
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194 //vramSetBankB(VRAM_B_MAIN_BG); |
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195 //vramSetBankC(VRAM_C_MAIN_BG); |
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196 //vramSetBankD(VRAM_D_MAIN_BG); |
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197 //vramSetBankE(VRAM_E_MAIN_BG); |
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198 //vramSetBankF(VRAM_F_MAIN_BG); |
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199 //vramSetBankG(VRAM_G_MAIN_BG); |
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200 vramSetBankH(VRAM_H_SUB_BG); |
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201 vramSetBankI(VRAM_I_LCD); |
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202 |
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203 ////////////////set up text background for text///////////////////// |
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204 SUB_BG0_CR = BG_MAP_BASE(8); |
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205 |
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206 BG_PALETTE_SUB[255] = RGB15(31,31,31);//by default font will be rendered with color 255 |
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207 ///////////////set up our bitmap background/////////////////////// |
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208 |
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209 //BG3_CR = BG_BMP16_512x512; |
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210 |
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211 //these are rotation backgrounds so you must set the rotation attributes: |
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212 //these are fixed point numbers with the low 8 bits the fractional part |
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213 //this basicaly gives it a 1:1 translation in x and y so you get a nice flat bitmap |
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214 /* BG3_XDX = 1<<8; |
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215 BG3_XDY = 0; |
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216 BG3_YDX = 0; |
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217 BG3_YDY = 1<<8; |
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218 //our bitmap looks a bit better if we center it so scroll down (256 - 192) / 2 |
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219 BG3_CX = 0; |
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220 BG3_CY = 0; |
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221 */ |
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222 //consoleInit() is a lot more flexible but this gets you up and running quick |
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223 consoleInitDefault((u16*)SCREEN_BASE_BLOCK_SUB(8), (u16*)CHAR_BASE_BLOCK_SUB(0), 16); |
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224 |
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225 |
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226 frontBuffer =(u16*)(0x06000000); |
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227 //backBuffer =(u16*)(0x06000000 + 1024 * 512*2); |
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228 |
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229 //lcdSwap(); |
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230 /* We're done! */ |
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231 return(0); |
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232 } |
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233 |
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234 SDL_Rect **NDS_ListModes(_THIS, SDL_PixelFormat *format, Uint32 flags) |
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235 { |
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236 return (SDL_Rect **) -1; |
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237 } |
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238 |
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239 SDL_Surface *NDS_SetVideoMode(_THIS, SDL_Surface *current, |
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240 int width, int height, int bpp, Uint32 flags) |
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241 { |
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242 Uint32 Rmask, Gmask, Bmask, Amask; |
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243 |
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244 //if(width > 1024 || height > 512 || bpp > 16) |
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245 // return(NULL); |
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246 |
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247 if(bpp >8) { |
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248 bpp=16; |
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249 Rmask = 0x0000001F; |
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250 Gmask = 0x000003E0; |
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251 Bmask = 0x00007C00; |
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252 Amask = 0x00008000; |
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253 |
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254 videoSetMode(MODE_5_2D| DISPLAY_BG2_ACTIVE); |
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255 |
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256 vramSetMainBanks(VRAM_A_MAIN_BG,VRAM_B_MAIN_BG,VRAM_C_MAIN_BG,VRAM_D_MAIN_BG); |
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257 |
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258 BG2_CR = BG_BMP16_512x512; |
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259 BG2_XDX = ((width / 256) << 8) | (width % 256) ; |
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260 BG2_XDY = 0; |
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261 BG2_YDX = 0; |
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262 BG2_YDY = ((height / 192) << 8) | ((height % 192) + (height % 192) / 3) ; |
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263 BG2_CX = 0; |
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264 BG2_CY = 0; |
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265 // for (i=0;i<256*192;i++) |
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266 // frontBuffer[i] = RGB15(31,0,0)|BIT(15); |
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267 } |
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268 else |
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269 if(bpp <= 8) { |
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270 bpp=8; |
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271 Rmask = 0x00000000; |
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272 Gmask = 0x00000000; |
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273 Bmask = 0x00000000; |
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274 BG2_CR = BG_BMP8_1024x512; |
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275 BG2_XDX = ((width / 256) << 8) | (width % 256) ; |
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276 BG2_XDY = 0; |
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277 BG2_YDX = 0; |
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278 BG2_YDY = ((height / 192) << 8) | ((height % 192) + (height % 192) / 3) ; |
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279 |
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280 } |
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281 else |
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282 if(bpp < 15) bpp=15; |
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283 if(width<=256) width=256; |
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284 else |
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285 if(width<256) width=256; |
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286 if(height<=192) height=192; |
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287 else |
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288 if(height<192) height=192; |
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289 |
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290 if(bpp==8) |
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291 { |
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292 if(width<256) width=256; |
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293 if(height<192) height=192; |
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294 this->hidden->ndsmode=4; |
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295 } |
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296 |
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297 if(bpp==15) |
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298 { |
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299 if(width<256) this->hidden->ndsmode=5; |
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300 else this->hidden->ndsmode=3; |
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301 } |
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302 |
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303 this->hidden->buffer= frontBuffer;//NDS_VRAM_BASE; |
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304 |
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305 //NDS_DISPCNT = NDS_DISP_MODE(this->hidden->ndsmode)|NDS_DISP_BG2; |
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306 |
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307 //fprintf(stderr,"Setting mode %dx%d (ndsmode %d)\n", width, height,this->hidden->ndsmode); |
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308 |
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309 // FIXME: How do I tell that 15 bits mode is 555? |
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310 |
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311 SDL_memset(this->hidden->buffer, 0, 1024 * 512* ((this->hidden->ndsmode==4 || this->hidden->ndsmode==5) ? 2 : 1 ) * ((bpp+7) / 8)); |
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312 |
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313 /* Allocate the new pixel format for the screen */ |
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314 if ( ! SDL_ReallocFormat(current, bpp, Rmask, Gmask, Bmask, Amask) ) { |
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315 this->hidden->buffer = NULL; |
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316 SDL_SetError("Couldn't allocate new pixel format for requested mode"); |
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317 return(NULL); |
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318 } |
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319 |
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320 /* Set up the new mode framebuffer */ |
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321 current->flags = flags | SDL_FULLSCREEN | SDL_HWSURFACE | (this->hidden->ndsmode > 0 ? SDL_DOUBLEBUF : 0); |
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322 this->hidden->w = current->w = width; |
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323 this->hidden->h = current->h = height; |
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324 current->pixels = frontBuffer; |
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325 |
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326 if (flags & SDL_DOUBLEBUF) { |
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327 this->hidden->secondbufferallocd=1; |
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328 backBuffer=(u16*)SDL_malloc(1024*512*2); |
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329 current->pixels = backBuffer; |
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330 } |
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331 if(bpp==8) |
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332 current->pitch =1024; |
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333 else |
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334 current->pitch =512*2; |
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335 |
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336 /* We're done */ |
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337 return(current); |
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338 } |
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339 |
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340 static int NDS_AllocHWSurface(_THIS, SDL_Surface *surface) |
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341 { |
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342 if(this->hidden->secondbufferallocd) { |
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343 //printf("double double buffer alloc\n"); |
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344 return -1; |
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345 } |
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346 //if(this->hidden->ndsmode==3) |
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347 //{ |
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348 // printf("no 2nd buffer in mode3\n"); |
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349 // return -1; |
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350 //} |
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351 //printf("second buffer\n"); |
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352 //this->hidden->secondbufferallocd=1; |
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353 //backBuffer=(u16*)malloc(1024*512*2); |
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354 //surface->pixels = backBuffer; |
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355 |
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356 return(0); |
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357 } |
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358 static void NDS_FreeHWSurface(_THIS, SDL_Surface *surface) |
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359 { |
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360 //free(backBuffer); |
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361 this->hidden->secondbufferallocd=0; |
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362 } |
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363 int z=0; |
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364 /* We need to wait for vertical retrace on page flipped displays */ |
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365 static int NDS_LockHWSurface(_THIS, SDL_Surface *surface) |
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366 { |
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367 /* |
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368 uint8* a = surface->pixels; |
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369 int i,j; |
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370 a += 5 * SCREEN_WIDTH + 5; |
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371 for( i = 0; i < 195; ++i) { |
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372 uint16* line = a + (SCREEN_WIDTH * i); |
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373 for( j = 0; j < 158; ++j) { |
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374 *line++ = RGB15(155,155,25); |
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375 } |
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376 } |
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377 */ |
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378 //if (z <256) |
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379 // BG_PALETTE[z++]=RGB15(255-z,z,255-z); |
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380 |
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381 |
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382 return(0); |
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383 } |
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384 |
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385 static void NDS_UnlockHWSurface(_THIS, SDL_Surface *surface) |
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386 { |
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387 return; |
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388 } |
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389 |
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390 static int NDS_FlipHWSurface(_THIS, SDL_Surface *surface) |
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391 { |
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392 if(this->hidden->secondbufferallocd){ |
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393 while(DISP_Y!=192); |
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394 while(DISP_Y==192); |
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395 //printf("flip"); |
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396 |
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397 dmaCopyAsynch(backBuffer,frontBuffer,1024*512); |
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398 } |
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399 //printf("flip\n"); |
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400 //u16* temp = surface->pixels; |
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401 //surface->pixels = frontBuffer; |
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402 //frontBuffer = temp; |
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403 /* u8* vram=BG_GFX; |
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404 int x,y; |
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405 for(y = 0; y < 512; y++) |
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406 dmaCopy(&frontBuffer[y*rects->w], &vram[y*512],512); |
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407 //unsigned char buf; |
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408 |
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409 //printf("NDS_FlipHWSurface\n"); |
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410 //printf("ptr now: 0x%x\n",surface->pixels); |
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411 |
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412 while(DISP_Y!=192); |
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413 while(DISP_Y==192); |
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414 //swap |
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415 u16* temp = frontBuffer; |
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416 frontBuffer = backBuffer; |
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417 backBuffer = temp; |
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418 |
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419 //flip |
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420 //base is 16KB and screen size is 256x256x2 (128KB) |
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421 BG2_CR ^= BG_BMP_BASE( 512 / 16 ); */ |
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422 /* |
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423 if(surface->pixels == frontBuffer)//NDS_VRAM_BASE) |
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424 { |
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425 while(DISP_Y!=192); |
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426 while(DISP_Y==192); |
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427 //swap |
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428 u16* temp = backBuffer; |
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429 backBuffer = frontBuffer; |
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430 frontBuffer = temp; |
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431 |
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432 //flip |
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433 //base is 16KB and screen size is 256x256x2 (128KB) |
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434 BG3_CR ^= BG_BMP_BASE( 128 / 16 ); |
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435 } |
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436 else |
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437 { |
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438 |
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439 while(DISP_Y!=192); |
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440 while(DISP_Y==192); |
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441 //swap |
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442 u16* temp = frontBuffer; |
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443 frontBuffer = backBuffer; |
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444 backBuffer = temp; |
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445 |
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446 //flip |
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447 //base is 16KB and screen size is 256x256x2 (128KB) |
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448 BG3_CR ^= BG_BMP_BASE( 128 / 16 ); |
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449 |
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450 } |
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451 */ |
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452 //printf("ptr then: 0x%x\n",surface->pixels); |
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453 |
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454 //printf("setting dispcnt to 0x%x\n",NDS_DISPCNT = NDS_DISP_MODE(this->hidden->ndsmode)|NDS_DISP_BG2| buf); |
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455 return(0); |
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456 } |
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457 |
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458 static void NDS_UpdateRects(_THIS, int numrects, SDL_Rect *rects) |
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459 { |
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460 //fprintf(stderr,"update\n"); |
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461 /* do nothing. */ |
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462 //dmaCopy(frontBuffer,BG_GFX,512*512); |
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463 /* |
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464 u8* vram=(u8*)BG_GFX; |
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465 int x,y; |
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466 for(y = 0; y < 512; y++) |
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467 dmaCopy(&frontBuffer[y*rects->w], &vram[y*512],512); |
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468 */ |
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469 |
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470 } |
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471 |
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472 int NDS_SetColors(_THIS, int firstcolor, int ncolors, SDL_Color *colors) |
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473 { |
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474 //printf("SetColors\n"); |
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475 short r,g,b; |
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476 |
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477 if(this->hidden->ndsmode != 4) |
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478 { |
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479 printf("This is not a palettized mode\n"); |
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480 return -1; |
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481 } |
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482 |
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483 int i,j=firstcolor+ncolors; |
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484 for(i=firstcolor;i<j;i++) |
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485 { |
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486 r=colors[i].r>>3; |
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487 g=colors[i].g>>3; |
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488 b=colors[i].b>>3; |
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489 BG_PALETTE[i]=RGB15(r, g, b); |
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490 } |
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491 |
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492 return(0); |
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493 } |
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494 |
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495 /* Note: If we are terminated, this could be called in the middle of |
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496 another SDL video routine -- notably UpdateRects. |
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497 */ |
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498 void NDS_VideoQuit(_THIS) |
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499 { |
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500 } |