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/* ScummVM - Scumm Interpreter
* Dreamcast port
* Copyright (C) 2002-2004 Marcus Comstedt
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
* $Header$
*
*/
#include <common/system.h>
#include <ronin/soundcommon.h>
#define NUM_BUFFERS 4
#define SOUND_BUFFER_SHIFT 3
class Interactive
{
public:
virtual int key(int k, byte &shiftFlags) = 0;
virtual void mouse(int x, int y) = 0;
};
#include "softkbd.h"
class OSystem_Dreamcast : public OSystem {
public:
OSystem_Dreamcast();
// Determine whether the backend supports the specified feature.
bool hasFeature(Feature f);
// En-/disable the specified feature.
void setFeatureState(Feature f, bool enable);
// Query the state of the specified feature.
bool getFeatureState(Feature f);
// Retrieve a list of all graphics modes supported by this backend.
const GraphicsMode *getSupportedGraphicsModes() const;
// Return the ID of the 'default' graphics mode.
int getDefaultGraphicsMode() const;
// Switch to the specified graphics mode.
bool setGraphicsMode(int mode);
// Determine which graphics mode is currently active.
int getGraphicsMode() const;
// Set colors of the palette
void setPalette(const byte *colors, uint start, uint num);
void grabPalette(byte *colors, uint start, uint num);
// Set the size of the video bitmap.
// Typically, 320x200
void initSize(uint w, uint h, int overlayScale);
int16 getHeight() { return _screen_h; }
int16 getWidth() { return _screen_w; }
// Draw a bitmap to screen.
// The screen will not be updated to reflect the new bitmap
void copyRectToScreen(const byte *buf, int pitch, int x, int y, int w, int h);
// Update the dirty areas of the screen
void updateScreen();
// Either show or hide the mouse cursor
bool showMouse(bool visible);
// Move ("warp") the mouse cursor to the specified position.
void warpMouse(int x, int y);
// Set the bitmap that's used when drawing the cursor.
void setMouseCursor(const byte *buf, uint w, uint h, int hotspot_x, int hotspot_y, byte keycolor, int cursorTargetScale);
// Shaking is used in SCUMM. Set current shake position.
void setShakePos(int shake_pos);
// Get the number of milliseconds since the program was started.
uint32 getMillis();
// Delay for a specified amount of milliseconds
void delayMillis(uint msecs);
// Get the next event.
// Returns true if an event was retrieved.
bool pollEvent(Event &event);
// Set function that generates samples
bool setSoundCallback(SoundProc proc, void *param);
void clearSoundCallback();
// Determine the output sample rate. Audio data provided by the sound
// callback will be played using this rate.
int getOutputSampleRate() const;
// Initialise the specified CD drive for audio playback.
bool openCD(int drive);
// Poll cdrom status
// Returns true if cd audio is playing
bool pollCD();
// Play cdrom audio track
void playCD(int track, int num_loops, int start_frame, int duration);
// Stop cdrom audio track
void stopCD();
// Update cdrom audio status
void updateCD();
// Quit
void quit();
// Overlay
void showOverlay();
void hideOverlay();
void clearOverlay();
void grabOverlay(int16 *buf, int pitch);
void copyRectToOverlay(const int16 *buf, int pitch, int x, int y, int w, int h);
OverlayColor RGBToColor(uint8 r, uint8 g, uint8 b) { return ARGBToColor(255, r, g, b); }
void colorToRGB(OverlayColor color, uint8 &r, uint8 &g, uint8 &b) {
uint8 tmp; colorToARGB(color, tmp, r, g, b);
}
OverlayColor ARGBToColor(uint8 a, uint8 r, uint8 g, uint8 b) {
return ((a&0xf0)<<8)|((r&0xf0)<<4)|(g&0xf0)|(b>>4);
}
void colorToARGB(OverlayColor color, uint8 &a, uint8 &r, uint8 &g, uint8 &b) {
a = ((color>>8)&0xf0)|((color>>12)&0x0f);
r = ((color>>4)&0xf0)|((color>>8)&0x0f);
g = (color&0xf0)|((color>>4)&0x0f);
b = ((color<<4)&0xf0)|(color&0x0f);
}
// Add a callback timer
void setTimerCallback(TimerProc callback, int timer);
// Mutex handling
MutexRef createMutex();
void lockMutex(MutexRef mutex);
void unlockMutex(MutexRef mutex);
void deleteMutex(MutexRef mutex);
// Set a window caption or any other comparable status display to the
// given value.
void setWindowCaption(const char *caption);
// Savefile handling
Common::SaveFileManager *getSavefileManager();
// Extra SoftKbd support
void mouseToSoftKbd(int x, int y, int &rx, int &ry) const;
static OSystem *create();
private:
SoftKeyboard _softkbd;
int _ms_cur_x, _ms_cur_y, _ms_cur_w, _ms_cur_h, _ms_old_x, _ms_old_y;
int _ms_hotspot_x, _ms_hotspot_y, _ms_visible, _devpoll;
int _current_shake_pos, _screen_w, _screen_h;
int _overlay_x, _overlay_y;
unsigned char *_ms_buf;
unsigned char _ms_keycolor;
SoundProc _sound_proc;
void *_sound_proc_param;
bool _overlay_visible, _overlay_dirty, _screen_dirty;
int _screen_buffer, _overlay_buffer, _mouse_buffer;
bool _aspect_stretch, _softkbd_on;
float _overlay_fade, _xscale, _yscale, _top_offset;
int _softkbd_motion;
uint32 _timer_duration, _timer_next_expiry;
bool _timer_active;
int (*_timer_callback) (int);
unsigned char *screen;
unsigned short *mouse;
unsigned short *overlay;
void *screen_tx[NUM_BUFFERS];
void *mouse_tx[NUM_BUFFERS];
void *ovl_tx[NUM_BUFFERS];
unsigned short palette[256];
int temp_sound_buffer[RING_BUFFER_SAMPLES>>SOUND_BUFFER_SHIFT];
void checkSound();
void drawMouse(int xdraw, int ydraw, int w, int h,
unsigned char *buf, bool visible);
void setScaling();
};
extern int handleInput(struct mapledev *pad,
int &mouse_x, int &mouse_y,
byte &shiftFlags, Interactive *inter = NULL);
extern void initSound();
extern bool selectGame(char *&, char *&, class Icon &);
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