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/* ScummVM - Scumm Interpreter
* Copyright (C) 2001/2002 The ScummVM project
*
* 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.
*
* $Header$
*
*/
#ifndef SDL_COMMON_H
#define SDL_COMMON_H
#include "stdafx.h"
#include "scummsys.h"
#include "system.h"
#include <SDL.h>
#include <SDL_thread.h>
class OSystem_SDL_Common : public OSystem {
public:
// Set colors of the palette
void set_palette(const byte *colors, uint start, uint num) = 0;
// Set the size of the video bitmap.
// Typically, 320x200
void init_size(uint w, uint h);
// Draw a bitmap to screen.
// The screen will not be updated to reflect the new bitmap
void copy_rect(const byte *buf, int pitch, int x, int y, int w, int h);
void move_screen(int dx, int dy, int height);
// Update the dirty areas of the screen
void update_screen() = 0;
// Either show or hide the mouse cursor
bool show_mouse(bool visible);
// Set the position of the mouse cursor
void set_mouse_pos(int x, int y);
// Warp the mouse cursor. Where set_mouse_pos() only informs the
// backend of the mouse cursor's current position, this function
// actually moves the cursor to the specified position.
void warp_mouse(int x, int y);
// Set the bitmap that's used when drawing the cursor.
void set_mouse_cursor(const byte *buf, uint w, uint h, int hotspot_x, int hotspot_y);
// Shaking is used in SCUMM. Set current shake position.
void set_shake_pos(int shake_pos);
// Get the number of milliseconds since the program was started.
uint32 get_msecs();
// Delay for a specified amount of milliseconds
void delay_msecs(uint msecs);
// Create a thread
void *create_thread(ThreadProc *proc, void *param);
// Get the next event.
// Returns true if an event was retrieved.
bool poll_event(Event *event);
// Set function that generates samples
bool set_sound_proc(void *param, SoundProc *proc, byte sound);
// Poll CD status
// Returns true if cd audio is playing
bool poll_cdrom();
// Play CD audio track
void play_cdrom(int track, int num_loops, int start_frame, int end_frame);
// Stop CD audio track
void stop_cdrom();
// Update CD audio status
void update_cdrom();
// Quit
void quit();
// Set a parameter
uint32 property(int param, Property *value);
// Add a callback timer
void set_timer(int timer, int (*callback)(int));
// Mutex handling
void *create_mutex(void);
void lock_mutex(void *mutex);
void unlock_mutex(void *mutex);
void delete_mutex(void *mutex);
// Overlay
virtual void show_overlay();
virtual void hide_overlay();
virtual void clear_overlay();
virtual void grab_overlay(int16 *buf, int pitch);
virtual void copy_rect_overlay(const int16 *buf, int pitch, int x, int y, int w, int h);
virtual int16 get_height();
virtual int16 get_width();
// Methods that convert RBG to/from colors suitable for the overlay.
virtual int16 RBGToColor(uint8 r, uint8 g, uint8 b);
virtual void colorToRBG(int16 color, uint8 &r, uint8 &g, uint8 &b);
static OSystem *create(int gfx_mode, bool full_screen);
protected:
typedef void ScalerProc(uint8 *srcPtr, uint32 srcPitch, uint8 *deltaPtr,
uint8 *dstPtr, uint32 dstPitch, int width, int height);
OSystem_SDL_Common();
virtual ~OSystem_SDL_Common();
// unseen game screen
SDL_Surface *_screen;
int _screenWidth, _screenHeight;
// temporary screen (for scalers/overlay)
SDL_Surface *_tmpscreen;
int _tmpScreenWidth;
bool _overlayVisible;
// CD Audio
SDL_CD *_cdrom;
int cd_track, cd_num_loops, cd_start_frame, cd_end_frame;
Uint32 cd_end_time, cd_stop_time, cd_next_second;
enum {
DF_WANT_RECT_OPTIM = 1 << 0,
DF_UPDATE_EXPAND_1_PIXEL = 1 << 3
};
bool _forceFull; // Force full redraw on next update_screen
int _scaleFactor;
int _mode;
bool _full_screen;
uint32 _mode_flags;
enum {
NUM_DIRTY_RECT = 100,
MAX_MOUSE_W = 80,
MAX_MOUSE_H = 80,
MAX_SCALING = 3
};
// Dirty rect managment
SDL_Rect _dirty_rect_list[100];
int _num_dirty_rects;
uint32 *_dirty_checksums;
bool cksum_valid;
int CKSUM_NUM;
// Keyboard mouse emulation
struct KbdMouse {
int16 x, y, x_vel, y_vel, x_max, y_max, x_down_count, y_down_count;
uint32 last_time, delay_time, x_down_time, y_down_time;
} km;
struct MousePos {
int16 x, y, w, h;
MousePos() : x(0), y(0), w(0), h(0) {}
};
// joystick
SDL_Joystick *_joystick;
bool _mouseVisible;
bool _mouseDrawn;
byte *_mouseData;
byte *_mouseBackup;
MousePos _mouseCurState;
MousePos _mouseOldState;
int16 _mouseHotspotX;
int16 _mouseHotspotY;
// Shake mode
int _currentShakePos;
int _newShakePos;
// Palette data
SDL_Color *_currentPalette;
uint _paletteDirtyStart, _paletteDirtyEnd;
void add_dirty_rgn_auto(const byte *buf);
void mk_checksums(const byte *buf);
static void fill_sound(void *userdata, Uint8 * stream, int len);
void add_dirty_rect(int x, int y, int w, int h);
virtual void draw_mouse();
virtual void undraw_mouse();
virtual void load_gfx_mode() = 0;
virtual void unload_gfx_mode() = 0;
void setup_icon();
void kbd_mouse();
void init_joystick() { _joystick = SDL_JoystickOpen(0); }
static OSystem_SDL_Common *create();
};
#endif
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