1 | /* ScummVM - Scumm Interpreter
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2 | * Dreamcast port
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3 | * Copyright (C) 2002-2004 Marcus Comstedt
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4 | *
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5 | * This program is free software; you can redistribute it and/or
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6 | * modify it under the terms of the GNU General Public License
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7 | * as published by the Free Software Foundation; either version 2
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8 | * of the License, or (at your option) any later version.
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9 |
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10 | * This program 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
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13 | * GNU 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 General Public License
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16 | * along with this program; if not, write to the Free Software
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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 | * $Header: /cvsroot/scummvm/scummvm/backends/dc/dc.h,v 1.40 2005/05/10 23:17:13 fingolfin Exp $
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20 | *
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21 | */
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22 |
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23 | #include <common/system.h>
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24 | #include <ronin/soundcommon.h>
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25 |
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26 | #define NUM_BUFFERS 4
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27 | #define SOUND_BUFFER_SHIFT 3
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28 |
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29 | class Interactive
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30 | {
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31 | public:
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32 | virtual int key(int k, byte &shiftFlags) = 0;
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33 | virtual void mouse(int x, int y) = 0;
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34 | };
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35 |
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36 | #include "softkbd.h"
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37 |
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38 | class OSystem_Dreamcast : public OSystem {
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39 |
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40 | public:
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41 | OSystem_Dreamcast();
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42 |
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43 |
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44 | // Determine whether the backend supports the specified feature.
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45 | bool hasFeature(Feature f);
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46 |
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47 | // En-/disable the specified feature.
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48 | void setFeatureState(Feature f, bool enable);
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49 |
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50 | // Query the state of the specified feature.
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51 | bool getFeatureState(Feature f);
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52 |
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53 | // Retrieve a list of all graphics modes supported by this backend.
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54 | const GraphicsMode *getSupportedGraphicsModes() const;
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55 |
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56 | // Return the ID of the 'default' graphics mode.
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57 | int getDefaultGraphicsMode() const;
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58 |
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59 | // Switch to the specified graphics mode.
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60 | bool setGraphicsMode(int mode);
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61 |
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62 | // Determine which graphics mode is currently active.
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63 | int getGraphicsMode() const;
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64 |
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65 | // Set colors of the palette
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66 | void setPalette(const byte *colors, uint start, uint num);
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67 | //
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68 | void grabPalette(byte *colors, uint start, uint num);
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69 | // Set the size of the video bitmap.
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70 | // Typically, 320x200
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71 | void initSize(uint w, uint h, int overlayScale);
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72 | int16 getHeight() { return _screen_h; }
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73 | int16 getWidth() { return _screen_w; }
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74 |
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75 | // Draw a bitmap to screen.
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76 | // The screen will not be updated to reflect the new bitmap
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77 | void copyRectToScreen(const byte *buf, int pitch, int x, int y, int w, int h);
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78 |
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79 | // Update the dirty areas of the screen
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80 | void updateScreen();
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81 |
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82 | // Either show or hide the mouse cursor
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83 | bool showMouse(bool visible);
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84 |
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85 | // Move ("warp") the mouse cursor to the specified position.
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86 | void warpMouse(int x, int y);
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87 |
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88 | // Set the bitmap that's used when drawing the cursor.
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89 | void setMouseCursor(const byte *buf, uint w, uint h, int hotspot_x, int hotspot_y, byte keycolor, int cursorTargetScale);
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90 |
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91 | // Shaking is used in SCUMM. Set current shake position.
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92 | void setShakePos(int shake_pos);
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93 |
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94 | // Get the number of milliseconds since the program was started.
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95 | uint32 getMillis();
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96 |
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97 | // Delay for a specified amount of milliseconds
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98 | void delayMillis(uint msecs);
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99 |
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100 | // Get the next event.
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101 | // Returns true if an event was retrieved.
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102 | bool pollEvent(Event &event);
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103 |
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104 | // Set function that generates samples
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105 | bool setSoundCallback(SoundProc proc, void *param);
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106 | void clearSoundCallback();
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107 |
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108 | // Determine the output sample rate. Audio data provided by the sound
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109 | // callback will be played using this rate.
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110 | int getOutputSampleRate() const;
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111 |
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112 | // Initialise the specified CD drive for audio playback.
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113 | bool openCD(int drive);
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114 |
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115 | // Poll cdrom status
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116 | // Returns true if cd audio is playing
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117 | bool pollCD();
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118 |
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119 | // Play cdrom audio track
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120 | void playCD(int track, int num_loops, int start_frame, int duration);
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121 |
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122 | // Stop cdrom audio track
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123 | void stopCD();
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124 |
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125 | // Update cdrom audio status
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126 | void updateCD();
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127 |
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128 | // Quit
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129 | void quit();
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130 |
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131 | // Overlay
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132 | void showOverlay();
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133 | void hideOverlay();
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134 | void clearOverlay();
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135 | void grabOverlay(int16 *buf, int pitch);
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136 | void copyRectToOverlay(const int16 *buf, int pitch, int x, int y, int w, int h);
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137 | OverlayColor RGBToColor(uint8 r, uint8 g, uint8 b) { return ARGBToColor(255, r, g, b); }
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138 | void colorToRGB(OverlayColor color, uint8 &r, uint8 &g, uint8 &b) {
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139 | uint8 tmp; colorToARGB(color, tmp, r, g, b);
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140 | }
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141 | OverlayColor ARGBToColor(uint8 a, uint8 r, uint8 g, uint8 b) {
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142 | return ((a&0xf0)<<8)|((r&0xf0)<<4)|(g&0xf0)|(b>>4);
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143 | }
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144 | void colorToARGB(OverlayColor color, uint8 &a, uint8 &r, uint8 &g, uint8 &b) {
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145 | a = ((color>>8)&0xf0)|((color>>12)&0x0f);
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146 | r = ((color>>4)&0xf0)|((color>>8)&0x0f);
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147 | g = (color&0xf0)|((color>>4)&0x0f);
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148 | b = ((color<<4)&0xf0)|(color&0x0f);
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149 | }
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150 |
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151 | // Add a callback timer
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152 | void setTimerCallback(TimerProc callback, int timer);
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153 |
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154 | // Mutex handling
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155 | MutexRef createMutex();
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156 | void lockMutex(MutexRef mutex);
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157 | void unlockMutex(MutexRef mutex);
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158 | void deleteMutex(MutexRef mutex);
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159 |
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160 | // Set a window caption or any other comparable status display to the
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161 | // given value.
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162 | void setWindowCaption(const char *caption);
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163 |
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164 | // Savefile handling
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165 | Common::SaveFileManager *getSavefileManager();
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166 |
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167 |
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168 | // Extra SoftKbd support
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169 | void mouseToSoftKbd(int x, int y, int &rx, int &ry) const;
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170 |
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171 |
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172 | static OSystem *create();
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173 |
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174 |
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175 | private:
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176 |
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177 | SoftKeyboard _softkbd;
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178 |
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179 | int _ms_cur_x, _ms_cur_y, _ms_cur_w, _ms_cur_h, _ms_old_x, _ms_old_y;
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180 | int _ms_hotspot_x, _ms_hotspot_y, _ms_visible, _devpoll;
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181 | int _current_shake_pos, _screen_w, _screen_h;
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182 | int _overlay_x, _overlay_y;
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183 | unsigned char *_ms_buf;
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184 | unsigned char _ms_keycolor;
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185 | SoundProc _sound_proc;
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186 | void *_sound_proc_param;
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187 | bool _overlay_visible, _overlay_dirty, _screen_dirty;
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188 | int _screen_buffer, _overlay_buffer, _mouse_buffer;
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189 | bool _aspect_stretch, _softkbd_on;
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190 | float _overlay_fade, _xscale, _yscale, _top_offset;
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191 | int _softkbd_motion;
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192 |
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193 | uint32 _timer_duration, _timer_next_expiry;
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194 | bool _timer_active;
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195 | int (*_timer_callback) (int);
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196 |
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197 | unsigned char *screen;
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198 | unsigned short *mouse;
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199 | unsigned short *overlay;
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200 | void *screen_tx[NUM_BUFFERS];
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201 | void *mouse_tx[NUM_BUFFERS];
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202 | void *ovl_tx[NUM_BUFFERS];
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203 | unsigned short palette[256];
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204 |
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205 | int temp_sound_buffer[RING_BUFFER_SAMPLES>>SOUND_BUFFER_SHIFT];
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206 |
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207 | void checkSound();
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208 |
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209 | void drawMouse(int xdraw, int ydraw, int w, int h,
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210 | unsigned char *buf, bool visible);
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211 |
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212 | void setScaling();
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213 | };
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214 |
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215 |
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216 | extern int handleInput(struct mapledev *pad,
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217 | int &mouse_x, int &mouse_y,
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218 | byte &shiftFlags, Interactive *inter = NULL);
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219 | extern void initSound();
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220 | extern bool selectGame(char *&, char *&, class Icon &);
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221 |
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