/* ScummVM - Scumm Interpreter * Copyright (C) 2001 Ludvig Strigeus * 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. * * $Header$ * */ #include "stdafx.h" #include "scumm.h" #include "mididrv.h" #include "SDL_thread.h" #include "gameDetector.h" #include "scummvm.xpm" #include #define MAX(a,b) (((a)<(b)) ? (b) : (a)) #define MIN(a,b) (((a)>(b)) ? (b) : (a)) class OSystem_SDL : public OSystem { public: // Set colors of the palette void set_palette(const byte *colors, uint start, uint num); // 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); // Update the dirty areas of the screen void update_screen(); // 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); // 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 cdrom status // Returns true if cd audio is playing bool poll_cdrom(); // Play cdrom audio track void play_cdrom(int track, int num_loops, int start_frame, int end_frame); // Stop cdrom audio track void stop_cdrom(); // Update cdrom audio status void update_cdrom(); // Quit void quit(); // Set a parameter uint32 property(int param, Property *value); static OSystem *create(int gfx_mode, bool full_screen); private: typedef void TwoXSaiProc(uint8 *srcPtr, uint32 srcPitch, uint8 *deltaPtr, uint8 *dstPtr, uint32 dstPitch, int width, int height); SDL_Surface *sdl_screen; SDL_Surface *sdl_hwscreen; SDL_Surface *sdl_tmpscreen; SDL_CD *cdrom; enum { DF_WANT_RECT_OPTIM = 1 << 0, DF_REAL_8BIT = 1 << 1, DF_SEPARATE_TEMPSCREEN = 1 << 2, DF_UPDATE_EXPAND_1_PIXEL = 1 << 3 }; int _mode; bool _full_screen; bool _mouse_visible; bool _mouse_drawn; uint32 _mode_flags; bool force_full; //Force full redraw on next update_screen bool cksum_valid; enum { NUM_DIRTY_RECT = 100, MAX_MOUSE_W = 40, MAX_MOUSE_H = 40, MAX_SCALING = 3 }; int SCREEN_WIDTH, SCREEN_HEIGHT, CKSUM_NUM; SDL_Rect *dirty_rect_list; int num_dirty_rects; uint32 *dirty_checksums; int scaling; /* CD Audio */ int cd_track, cd_num_loops, cd_start_frame, cd_end_frame; Uint32 cd_end_time, cd_stop_time, cd_next_second; struct MousePos { int16 x,y,w,h; }; byte *_mouse_data; byte *_mouse_backup; MousePos _mouse_cur_state; MousePos _mouse_old_state; int16 _mouse_hotspot_x; int16 _mouse_hotspot_y; int _current_shake_pos; int _new_shake_pos; TwoXSaiProc *_sai_func; SDL_Color *_cur_pal; uint _palette_changed_first, _palette_changed_last; OSystem_SDL() : _current_shake_pos(0), _new_shake_pos(0) {} 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); void draw_mouse(); void undraw_mouse(); void load_gfx_mode(); void unload_gfx_mode(); void hotswap_gfx_mode(); void get_320x200_image(byte *buf); static uint32 autosave(uint32); void setup_icon(); }; int Init_2xSaI (uint32 BitFormat); void _2xSaI(uint8 *srcPtr, uint32 srcPitch, uint8 *deltaPtr, uint8 *dstPtr, uint32 dstPitch, int width, int height); void Super2xSaI(uint8 *srcPtr, uint32 srcPitch, uint8 *deltaPtr, uint8 *dstPtr, uint32 dstPitch, int width, int height); void SuperEagle(uint8 *srcPtr, uint32 srcPitch, uint8 *deltaPtr, uint8 *dstPtr, uint32 dstPitch, int width, int height); void AdvMame2x(uint8 *srcPtr, uint32 srcPitch, uint8 *null, uint8 *dstPtr, uint32 dstPitch, int width, int height); void Normal1x(uint8 *srcPtr, uint32 srcPitch, uint8 *null, uint8 *dstPtr, uint32 dstPitch, int width, int height); void Normal2x(uint8 *srcPtr, uint32 srcPitch, uint8 *null, uint8 *dstPtr, uint32 dstPitch, int width, int height); void Normal3x(uint8 *srcPtr, uint32 srcPitch, uint8 *null, uint8 *dstPtr, uint32 dstPitch, int width, int height); void atexit_proc() { SDL_ShowCursor(SDL_ENABLE); SDL_Quit(); } uint32 OSystem_SDL::autosave(uint32 interval) { g_scumm->_doAutosave = true; return interval; } OSystem *OSystem_SDL::create(int gfx_mode, bool full_screen) { OSystem_SDL *syst = new OSystem_SDL(); syst->_mode = gfx_mode; syst->_full_screen = full_screen; if (SDL_Init(SDL_INIT_VIDEO | SDL_INIT_AUDIO | SDL_INIT_TIMER) ==-1) { error("Could not initialize SDL: %s.\n", SDL_GetError()); } SDL_ShowCursor(SDL_DISABLE); SDL_SetTimer(5 * 60 * 1000, (SDL_TimerCallback) autosave); /* Setup the icon */ syst->setup_icon(); /* Clean up on exit */ atexit(atexit_proc); return syst; } OSystem *OSystem_SDL_create(int gfx_mode, bool full_screen) { return OSystem_SDL::create(gfx_mode, full_screen); } void OSystem_SDL::set_palette(const byte *colors, uint start, uint num) { const byte *b = colors; uint i; SDL_Color *base = _cur_pal + start; for(i=0;i!=num;i++) { base[i].r = b[0]; base[i].g = b[1]; base[i].b = b[2]; b += 4; } if (start < _palette_changed_first) _palette_changed_first = start; if (start + num > _palette_changed_last) _palette_changed_last = start + num; } void OSystem_SDL::load_gfx_mode() { force_full = true; scaling = 1; _mode_flags = 0; _sai_func = NULL; sdl_tmpscreen = NULL; switch(_mode) { case GFX_2XSAI: scaling = 2; _sai_func = _2xSaI; break; case GFX_SUPER2XSAI: scaling = 2; _sai_func = Super2xSaI; break; case GFX_SUPEREAGLE: scaling = 2; _sai_func = SuperEagle; break; case GFX_ADVMAME2X: scaling = 2; _sai_func = AdvMame2x; break; case GFX_DOUBLESIZE: scaling = 2; break; case GFX_TRIPLESIZE: if (_full_screen) { warning("full screen in useless in triplesize mode, reverting to normal mode"); goto normal_mode; } scaling = 3; break; case GFX_NORMAL: normal_mode:; scaling = 1; break; } sdl_screen = SDL_CreateRGBSurface(SDL_SWSURFACE, SCREEN_WIDTH, SCREEN_HEIGHT, 8, 0, 0, 0, 0); if (sdl_screen == NULL) error("sdl_screen failed failed"); if (_sai_func) { uint16 *tmp_screen = (uint16*)calloc((SCREEN_WIDTH+3)*(SCREEN_HEIGHT+3),sizeof(uint16)); _mode_flags = DF_WANT_RECT_OPTIM | DF_SEPARATE_TEMPSCREEN | DF_UPDATE_EXPAND_1_PIXEL; sdl_hwscreen = SDL_SetVideoMode(SCREEN_WIDTH * scaling, SCREEN_HEIGHT * scaling, 16, _full_screen ? (SDL_FULLSCREEN|SDL_SWSURFACE) : SDL_SWSURFACE ); if (sdl_hwscreen == NULL) error("sdl_hwscreen failed"); /* Need some extra bytes around when using 2XSAI */ if (sdl_hwscreen->format->Rmask == 0x7C00) // HACK HACK HACK Init_2xSaI(555); else Init_2xSaI(565); sdl_tmpscreen = SDL_CreateRGBSurfaceFrom(tmp_screen, SCREEN_WIDTH + 3, SCREEN_HEIGHT + 3, 16, (SCREEN_WIDTH + 3)*2, sdl_hwscreen->format->Rmask, sdl_hwscreen->format->Gmask, sdl_hwscreen->format->Bmask, sdl_hwscreen->format->Amask); if (sdl_tmpscreen == NULL) error("sdl_tmpscreen failed"); } else { switch(scaling) { case 3: _sai_func = Normal3x; break; case 2: _sai_func = Normal2x; break; case 1: _sai_func = Normal1x; break; } _mode_flags = DF_WANT_RECT_OPTIM | DF_REAL_8BIT; sdl_hwscreen = SDL_SetVideoMode(SCREEN_WIDTH * scaling, SCREEN_HEIGHT * scaling, 8, _full_screen ? (SDL_FULLSCREEN|SDL_SWSURFACE) : SDL_SWSURFACE ); if (sdl_hwscreen == NULL) error("sdl_hwscreen failed"); sdl_tmpscreen = sdl_screen; } } void OSystem_SDL::unload_gfx_mode() { SDL_FreeSurface(sdl_screen); sdl_screen = NULL; SDL_FreeSurface(sdl_hwscreen); sdl_hwscreen = NULL; if (_mode_flags & DF_SEPARATE_TEMPSCREEN) { free((uint16*)sdl_tmpscreen->pixels); SDL_FreeSurface(sdl_tmpscreen); } sdl_tmpscreen = NULL; } void OSystem_SDL::init_size(uint w, uint h) { //if (w != SCREEN_WIDTH && h != SCREEN_HEIGHT) // error("320x200 is the only game resolution supported"); SCREEN_WIDTH = w; SCREEN_HEIGHT = h; CKSUM_NUM = (SCREEN_WIDTH*SCREEN_HEIGHT/(8*8)); /* allocate palette, it needs to be persistent across * driver changes, so i'll alloc it here */ _cur_pal = (SDL_Color*)calloc(sizeof(SDL_Color), 256); dirty_rect_list = (SDL_Rect*)calloc(NUM_DIRTY_RECT, sizeof(SDL_Rect)); _mouse_backup = (byte*)malloc(MAX_MOUSE_W * MAX_MOUSE_H * MAX_SCALING); dirty_checksums = (uint32*)calloc(CKSUM_NUM*2, sizeof(uint32)); load_gfx_mode(); } void OSystem_SDL::copy_rect(const byte *buf, int pitch, int x, int y, int w, int h) { if (sdl_screen == NULL) return; if (pitch == SCREEN_WIDTH && x==0 && y==0 && w==SCREEN_WIDTH && h==SCREEN_HEIGHT && _mode_flags&DF_WANT_RECT_OPTIM) { /* Special, optimized case for full screen updates. * It tries to determine what areas were actually changed, * and just updates those, on the actual display. */ add_dirty_rgn_auto(buf); } else { /* Clip the coordinates */ if (x < 0) { w+=x; buf-=x; x = 0; } if (y < 0) { h+=y; buf-=y*pitch; y = 0; } if (w > SCREEN_WIDTH-x) { w = SCREEN_WIDTH - x; } if (h > SCREEN_HEIGHT-y) { h = SCREEN_HEIGHT - y; } if (w <= 0 || h <= 0) return; cksum_valid = false; add_dirty_rect(x, y, w, h); } /* FIXME: undraw mouse only if the draw rect intersects with the mouse rect */ if (_mouse_drawn) undraw_mouse(); if (SDL_LockSurface(sdl_screen) == -1) error("SDL_LockSurface failed: %s.\n", SDL_GetError()); byte *dst = (byte *)sdl_screen->pixels + y * SCREEN_WIDTH + x; do { memcpy(dst, buf, w); dst += SCREEN_WIDTH; buf += pitch; } while (--h); SDL_UnlockSurface(sdl_screen); } void OSystem_SDL::add_dirty_rect(int x, int y, int w, int h) { if (force_full) return; if (num_dirty_rects == NUM_DIRTY_RECT) force_full = true; else { SDL_Rect *r = &dirty_rect_list[num_dirty_rects++]; /* Update the dirty region by 1 pixel for graphics drivers * that "smear" the screen */ if (_mode_flags & DF_UPDATE_EXPAND_1_PIXEL) { x--; y--; w+=2; h+=2; } /* clip */ if (x < 0) { w+=x; x=0; } if (y < 0) { h+=y; y=0; } if (w > SCREEN_WIDTH-x) { w = SCREEN_WIDTH - x; } if (h > SCREEN_HEIGHT-y) { h = SCREEN_HEIGHT - y; } r->x = x; r->y = y; r->w = w; r->h = h; } } #define ROL(a,n) a = (a<<(n)) | (a>>(32-(n))) #define DOLINE(x) a ^= ((uint32*)buf)[0+(x)*(SCREEN_WIDTH/4)]; b ^= ((uint32*)buf)[1+(x)*(SCREEN_WIDTH/4)] void OSystem_SDL::mk_checksums(const byte *buf) { uint32 *sums = dirty_checksums; uint x,y; const uint last_x = (uint)SCREEN_WIDTH/8; const uint last_y = (uint)SCREEN_HEIGHT/8; /* the 8x8 blocks in buf are enumerated starting in the top left corner and * reading each line at a time from left to right */ for(y=0; y != last_y; y++, buf+=SCREEN_WIDTH*(8-1)) for(x=0; x != last_x; x++, buf+=8) { uint32 a = x; uint32 b = y; DOLINE(0); ROL(a,13); ROL(b,11); DOLINE(2); ROL(a,13); ROL(b,11); DOLINE(4); ROL(a,13); ROL(b,11); DOLINE(6); ROL(a,13); ROL(b,11); a*=0xDEADBEEF; b*=0xBAADF00D; DOLINE(1); ROL(a,13); ROL(b,11); DOLINE(3); ROL(a,13); ROL(b,11); DOLINE(5); ROL(a,13); ROL(b,11); DOLINE(7); ROL(a,13); ROL(b,11); /* output the checksum for this block */ *sums++=a+b; } } #undef DOLINE #undef ROL void OSystem_SDL::add_dirty_rgn_auto(const byte *buf) { assert( ((uint32)buf & 3) == 0); /* generate a table of the checksums */ mk_checksums(buf); if (!cksum_valid) { force_full = true; cksum_valid = true; } /* go through the checksum list, compare it with the previous checksums, and add all dirty rectangles to a list. try to combine small rectangles into bigger ones in a simple way */ if (!force_full) { int x,y,w; uint32 *ck = dirty_checksums; for(y=0; y!=SCREEN_HEIGHT/8; y++) { for(x=0; x!=SCREEN_WIDTH/8; x++,ck++) { if (ck[0] != ck[CKSUM_NUM]) { /* found a dirty 8x8 block, now go as far to the right as possible, and at the same time, unmark the dirty status by setting old to new. */ w=0; do { ck[w+CKSUM_NUM] = ck[w]; w++; } while (x+w != SCREEN_WIDTH/8 && ck[w] != ck[w+CKSUM_NUM]); add_dirty_rect(x*8, y*8, w*8, 8); if (force_full) goto get_out; } } } } else { get_out:; /* Copy old checksums to new */ memcpy(dirty_checksums + CKSUM_NUM, dirty_checksums, CKSUM_NUM * sizeof(uint32)); } } void OSystem_SDL::update_screen() { /* First make sure the mouse is drawn, if it should be drawn. */ draw_mouse(); // Palette update in case we are NOT in "real" 8 bit color mode if (((_mode_flags & DF_REAL_8BIT) == 0) && _palette_changed_last != 0) { SDL_SetColors(sdl_screen, _cur_pal + _palette_changed_first, _palette_changed_first, _palette_changed_last - _palette_changed_first); _palette_changed_last = 0; force_full = true; } if (_current_shake_pos != _new_shake_pos) { /* Fill the dirty area with blackness or the scumm image */ SDL_Rect blackrect = {0, 0, SCREEN_WIDTH*scaling, _new_shake_pos*scaling}; SDL_FillRect(sdl_hwscreen, &blackrect, 0); _current_shake_pos = _new_shake_pos; force_full = true; } /* force a full redraw if requested */ if (force_full) { num_dirty_rects = 1; dirty_rect_list[0].x = 0; dirty_rect_list[0].y = 0; dirty_rect_list[0].w = SCREEN_WIDTH; dirty_rect_list[0].h = SCREEN_HEIGHT; } if (num_dirty_rects == 0 || sdl_hwscreen == NULL) return; SDL_Rect *r; uint32 srcPitch, dstPitch; SDL_Rect *last_rect = dirty_rect_list + num_dirty_rects; /* Convert appropriate parts of the image into 16bpp */ if ((_mode_flags & DF_REAL_8BIT) == 0) { SDL_Rect dst; for(r=dirty_rect_list; r!=last_rect; ++r) { dst = *r; dst.x++; dst.y++; if (SDL_BlitSurface(sdl_screen, r, sdl_tmpscreen, &dst) != 0) error("SDL_BlitSurface failed: %s", SDL_GetError()); } } SDL_LockSurface(sdl_tmpscreen); SDL_LockSurface(sdl_hwscreen); srcPitch = sdl_tmpscreen->pitch; dstPitch = sdl_hwscreen->pitch; if ((_mode_flags & DF_REAL_8BIT) == 0) { for(r=dirty_rect_list; r!=last_rect; ++r) { register int dst_y = r->y + _current_shake_pos; register int dst_h = 0; if (dst_y < SCREEN_HEIGHT) { dst_h = r->h; if (dst_h > SCREEN_HEIGHT - dst_y) dst_h = SCREEN_HEIGHT - dst_y; r->x <<= 1; dst_y <<= 1; _sai_func((byte*)sdl_tmpscreen->pixels + (r->x+2) + (r->y+1)*srcPitch, srcPitch, NULL, (byte*)sdl_hwscreen->pixels + r->x*scaling + dst_y*dstPitch, dstPitch, r->w, dst_h); } r->y = dst_y; r->w <<= 1; r->h = dst_h << 1; } } else { for(r=dirty_rect_list; r!=last_rect; ++r) { register int dst_y = r->y + _current_shake_pos; register int dst_h = 0; if (dst_y < SCREEN_HEIGHT) { dst_h = r->h; if (dst_h > SCREEN_HEIGHT - dst_y) dst_h = SCREEN_HEIGHT - dst_y; dst_y *= scaling; _sai_func((byte*)sdl_tmpscreen->pixels + r->x + r->y*srcPitch, srcPitch, NULL, (byte*)sdl_hwscreen->pixels + r->x*scaling + dst_y*dstPitch, dstPitch, r->w, dst_h); } r->x *= scaling; r->y = dst_y; r->w *= scaling; r->h = dst_h * scaling; } } if (force_full) { dirty_rect_list[0].y = 0; dirty_rect_list[0].h = SCREEN_HEIGHT * scaling; } SDL_UnlockSurface(sdl_tmpscreen); SDL_UnlockSurface(sdl_hwscreen); // Palette update in case we are in "real" 8 bit color mode if (_mode_flags & DF_REAL_8BIT && _palette_changed_last != 0) { SDL_SetColors(sdl_hwscreen, _cur_pal + _palette_changed_first, _palette_changed_first, _palette_changed_last - _palette_changed_first); _palette_changed_last = 0; } // Finally, blit all our changes to the screen SDL_UpdateRects(sdl_hwscreen, num_dirty_rects, dirty_rect_list); num_dirty_rects = 0; force_full = false; } bool OSystem_SDL::show_mouse(bool visible) { if (_mouse_visible == visible) return visible; bool last = _mouse_visible; _mouse_visible = visible; if (visible) draw_mouse(); else undraw_mouse(); return last; } void OSystem_SDL::set_mouse_pos(int x, int y) { if (x != _mouse_cur_state.x || y != _mouse_cur_state.y) { _mouse_cur_state.x = x; _mouse_cur_state.y = y; undraw_mouse(); } } void OSystem_SDL::set_mouse_cursor(const byte *buf, uint w, uint h, int hotspot_x, int hotspot_y) { _mouse_cur_state.w = w; _mouse_cur_state.h = h; _mouse_hotspot_x = hotspot_x; _mouse_hotspot_y = hotspot_y; _mouse_data = (byte*)buf; undraw_mouse(); } void OSystem_SDL::set_shake_pos(int shake_pos) { _new_shake_pos = shake_pos; } uint32 OSystem_SDL::get_msecs() { return SDL_GetTicks(); } void OSystem_SDL::delay_msecs(uint msecs) { SDL_Delay(msecs); } void *OSystem_SDL::create_thread(ThreadProc *proc, void *param) { return SDL_CreateThread(proc, param); } int mapKey(int key, byte mod) { if (key >= SDLK_F1 && key <= SDLK_F9) { return key - SDLK_F1 + 315; } else if (key >= 'a' && key <= 'z' && mod & KMOD_SHIFT) { key &= ~0x20; } else if (key >= SDLK_NUMLOCK && key <= SDLK_EURO) return 0; return key; } bool OSystem_SDL::poll_event(Event *event) { SDL_Event ev; for(;;) { if (!SDL_PollEvent(&ev)) return false; switch(ev.type) { case SDL_KEYDOWN: { byte b = 0; if (ev.key.keysym.mod & KMOD_SHIFT) b |= KBD_SHIFT; if (ev.key.keysym.mod & KMOD_CTRL) b |= KBD_CTRL; if (ev.key.keysym.mod & KMOD_ALT) b |= KBD_ALT; event->kbd.flags = b; /* internal keypress? */ if (b == KBD_ALT && ev.key.keysym.sym==SDLK_RETURN) { property(PROP_TOGGLE_FULLSCREEN, NULL); break; } if (b == KBD_CTRL && ev.key.keysym.sym=='z') { quit(); break; } if (b == (KBD_CTRL|KBD_ALT) && (ev.key.keysym.sym>='1') && (ev.key.keysym.sym<='7')) { Property prop; prop.gfx_mode = ev.key.keysym.sym - '1'; property(PROP_SET_GFX_MODE, &prop); break; } event->event_code = EVENT_KEYDOWN; event->kbd.keycode = ev.key.keysym.sym; event->kbd.ascii = mapKey(ev.key.keysym.sym, ev.key.keysym.mod); return true; } case SDL_MOUSEMOTION: event->event_code = EVENT_MOUSEMOVE; event->mouse.x = ev.motion.x; event->mouse.y = ev.motion.y; event->mouse.x /= scaling; event->mouse.y /= scaling; return true; case SDL_MOUSEBUTTONDOWN: if (ev.button.button == SDL_BUTTON_LEFT) event->event_code = EVENT_LBUTTONDOWN; else if (ev.button.button == SDL_BUTTON_RIGHT) event->event_code = EVENT_RBUTTONDOWN; else break; event->mouse.x = ev.button.x; event->mouse.y = ev.button.y; event->mouse.x /= scaling; event->mouse.y /= scaling; return true; case SDL_MOUSEBUTTONUP: if (ev.button.button == SDL_BUTTON_LEFT) event->event_code = EVENT_LBUTTONUP; else if (ev.button.button == SDL_BUTTON_RIGHT) event->event_code = EVENT_RBUTTONUP; else break; event->mouse.x = ev.button.x; event->mouse.y = ev.button.y; event->mouse.x /= scaling; event->mouse.y /= scaling; return true; case SDL_QUIT: quit(); } } } bool OSystem_SDL::set_sound_proc(void *param, SoundProc *proc, byte format) { SDL_AudioSpec desired; /* only one format supported at the moment */ desired.freq = SAMPLES_PER_SEC; desired.format = AUDIO_S16SYS; desired.channels = 1; desired.samples = 2048; desired.callback = proc; desired.userdata = param; if (SDL_OpenAudio(&desired, NULL) != 0) { return false; } SDL_PauseAudio(0); return true; } /* retrieve the 320x200 bitmap currently being displayed */ void OSystem_SDL::get_320x200_image(byte *buf) { /* make sure the mouse is gone */ undraw_mouse(); if (SDL_LockSurface(sdl_screen) == -1) error("SDL_LockSurface failed: %s.\n", SDL_GetError()); memcpy(buf, sdl_screen->pixels, SCREEN_WIDTH*SCREEN_HEIGHT); SDL_UnlockSurface(sdl_screen); } void OSystem_SDL::hotswap_gfx_mode() { /* hmm, need to allocate a 320x200 bitmap * which will contain the "backup" of the screen during the change. * then draw that to the new screen right after it's setup. */ byte *bak_mem = (byte*)malloc(SCREEN_WIDTH*SCREEN_HEIGHT); get_320x200_image(bak_mem); unload_gfx_mode(); load_gfx_mode(); force_full = true; /* reset palette */ if (_mode_flags & DF_REAL_8BIT) SDL_SetColors(sdl_hwscreen, _cur_pal, 0, 256); else SDL_SetColors(sdl_screen, _cur_pal, 0, 256); /* blit image */ OSystem_SDL::copy_rect(bak_mem, SCREEN_WIDTH, 0, 0, SCREEN_WIDTH, SCREEN_HEIGHT); free(bak_mem); OSystem_SDL::update_screen(); } uint32 OSystem_SDL::property(int param, Property *value) { switch(param) { case PROP_TOGGLE_FULLSCREEN: _full_screen ^= true; g_scumm->_fullScreen = _full_screen; if (!SDL_WM_ToggleFullScreen(sdl_hwscreen)) { /* if ToggleFullScreen fails, achieve the same effect with hotswap gfx mode */ hotswap_gfx_mode(); } return 1; case PROP_SET_WINDOW_CAPTION: SDL_WM_SetCaption(value->caption, value->caption); return 1; case PROP_OPEN_CD: if (SDL_InitSubSystem(SDL_INIT_CDROM) == -1) cdrom = NULL; else { cdrom = SDL_CDOpen(value->cd_num); /* Did if open? Check if cdrom is NULL */ if (!cdrom) { warning("Couldn't open drive: %s\n", SDL_GetError()); } } break; case PROP_SET_GFX_MODE: if (value->gfx_mode >= 7) return 0; _mode = value->gfx_mode; hotswap_gfx_mode(); return 1; case PROP_SHOW_DEFAULT_CURSOR: SDL_ShowCursor(value->show_cursor ? SDL_ENABLE : SDL_DISABLE); break; case PROP_GET_SAMPLE_RATE: return SAMPLES_PER_SEC; } return 0; } void OSystem_SDL::quit() { if(cdrom) { SDL_CDStop(cdrom); SDL_CDClose(cdrom); } unload_gfx_mode(); exit(1); } void OSystem_SDL::draw_mouse() { if (_mouse_drawn || !_mouse_visible) return; int x = _mouse_cur_state.x - _mouse_hotspot_x; int y = _mouse_cur_state.y - _mouse_hotspot_y; int w = _mouse_cur_state.w; int h = _mouse_cur_state.h; byte color; byte *src = _mouse_data; // Image representing the mouse byte *bak = _mouse_backup; // Surface used to backup the area obscured by the mouse byte *dst; // Surface we are drawing into // clip the mouse rect, and addjust the src pointer accordingly if (x < 0) { w += x; src -= x; x = 0; } if (y < 0) { h += y; src -= y * _mouse_cur_state.w; y = 0; } if (w > SCREEN_WIDTH - x) w = SCREEN_WIDTH - x; if (h > SCREEN_HEIGHT - y) h = SCREEN_HEIGHT - y; // Store the bounding box so that undraw mouse can restore the area the // mouse currently covers to its original content. _mouse_old_state.x = x; _mouse_old_state.y = y; _mouse_old_state.w = w; _mouse_old_state.h = h; // Quick check to see if anything has to be drawn at all if (w <= 0 || h <= 0) return; // Draw the mouse cursor; backup the covered area in "bak" if (SDL_LockSurface(sdl_screen) == -1) error("SDL_LockSurface failed: %s.\n", SDL_GetError()); add_dirty_rect(x, y, w, h); dst = (byte *)sdl_screen->pixels + y * SCREEN_WIDTH + x; while (h > 0) { int width = w; while (width > 0) { *bak++ = *dst; color = *src++; if (color != 0xFF) // 0xFF = transparent, don't draw *dst = color; dst++; width--; } src += _mouse_cur_state.w - w; bak += MAX_MOUSE_W - w; dst += SCREEN_WIDTH - w; h--; } SDL_UnlockSurface(sdl_screen); // Finally, set the flag to indicate the mouse has been drawn _mouse_drawn = true; } void OSystem_SDL::undraw_mouse() { if (!_mouse_drawn) return; _mouse_drawn = false; if (SDL_LockSurface(sdl_screen) == -1) error("SDL_LockSurface failed: %s.\n", SDL_GetError()); byte *dst, *bak = _mouse_backup; const int old_mouse_x = _mouse_old_state.x; const int old_mouse_y = _mouse_old_state.y; const int old_mouse_w = _mouse_old_state.w; const int old_mouse_h = _mouse_old_state.h; int x,y; // No need to do clipping here, since draw_mouse() did that already dst = (byte *)sdl_screen->pixels + old_mouse_y * SCREEN_WIDTH + old_mouse_x; for (y = 0; y < old_mouse_h; ++y, bak += MAX_MOUSE_W, dst += SCREEN_WIDTH) { for (x = 0; x < old_mouse_w; ++x) { dst[x] = bak[x]; } } add_dirty_rect(old_mouse_x, old_mouse_y, old_mouse_w, old_mouse_h); SDL_UnlockSurface(sdl_screen); } void OSystem_SDL::stop_cdrom() { /* Stop CD Audio in 1/10th of a second */ cd_stop_time = SDL_GetTicks() + 100; cd_num_loops = 0; } void OSystem_SDL::play_cdrom(int track, int num_loops, int start_frame, int end_frame) { /* Reset sync count */ g_scumm->_vars[g_scumm->VAR_MI1_TIMER] = 0; if (!num_loops && !start_frame) return; if (!cdrom) return; if (end_frame > 0) end_frame+=5; cd_track = track; cd_num_loops = num_loops; cd_start_frame = start_frame; SDL_CDStatus(cdrom); SDL_CDPlayTracks(cdrom, track, start_frame, 0, end_frame); cd_end_frame = end_frame; cd_stop_time = 0; cd_end_time = SDL_GetTicks() + cdrom->track[track].length * 1000 / CD_FPS; } bool OSystem_SDL::poll_cdrom() { if (!cdrom) return false; return (cd_num_loops != 0 && (SDL_GetTicks() < cd_end_time || SDL_CDStatus(cdrom) != CD_STOPPED)); } void OSystem_SDL::update_cdrom() { if (!cdrom) return; if (cd_stop_time != 0 && SDL_GetTicks() >= cd_stop_time) { SDL_CDStop(cdrom); cd_num_loops = 0; cd_stop_time = 0; return; } if (cd_num_loops == 0 || SDL_GetTicks() < cd_end_time) return; if (cd_num_loops != 1 && SDL_CDStatus(cdrom) != CD_STOPPED) { // Wait another second for it to be done cd_end_time += 1000; return; } if (cd_num_loops > 0) cd_num_loops--; if (cd_num_loops != 0) { SDL_CDPlayTracks(cdrom, cd_track, cd_start_frame, 0, cd_end_frame); cd_end_time = SDL_GetTicks() + cdrom->track[cd_track].length * 1000 / CD_FPS; } } void OSystem_SDL::setup_icon() { int w, h, ncols, nbytes, i; unsigned int rgba[256], icon[32 * 32]; unsigned char mask[32][4]; sscanf(scummvm_icon[0], "%d %d %d %d", &w, &h, &ncols, &nbytes); if ((w != 32) || (h != 32) || (ncols > 255) || (nbytes > 1)) { warning("Could not load the icon (%d %d %d %d)", w, h, ncols, nbytes); return; } for (i = 0; i < ncols; i++) { unsigned char code; char color[32]; unsigned int col; sscanf(scummvm_icon[1 + i], "%c c %s", &code, color); if (!strcmp(color, "None")) col = 0x00000000; else if (!strcmp(color, "black")) col = 0xFF000000; else if (color[0] == '#') { sscanf(color + 1, "%06x", &col); col |= 0xFF000000; } else { warning("Could not load the icon (%d %s - %s) ", code, color, scummvm_icon[1 + i]); return; } rgba[code] = col; } memset(mask, 0, sizeof(mask)); for (h = 0; h < 32; h++) { char *line = scummvm_icon[1 + ncols + h]; for (w = 0; w < 32; w++) { icon[w + 32 * h] = rgba[line[w]]; if (rgba[line[w]] & 0xFF000000) { mask[h][w >> 3] |= 1 << (7 - (w & 0x07)); } } } SDL_Surface *sdl_surf = SDL_CreateRGBSurfaceFrom(icon, 32, 32, 32, 32 * 4, 0xFF0000, 0x00FF00, 0x0000FF, 0xFF000000); SDL_WM_SetIcon(sdl_surf, (unsigned char *) mask); } #ifdef USE_NULL_DRIVER /* NULL video driver */ class OSystem_NULL : public OSystem { public: void set_palette(const byte *colors, uint start, uint num) {} void init_size(uint w, uint h); void copy_rect(const byte *buf, int pitch, int x, int y, int w, int h) {} void update_screen() {} bool show_mouse(bool visible) { return false; } void set_mouse_pos(int x, int y) {} void set_mouse_cursor(const byte *buf, uint w, uint h, int hotspot_x, int hotspot_y) {} void set_shake_pos(int shake_pos) {} uint32 get_msecs(); void delay_msecs(uint msecs); void *create_thread(ThreadProc *proc, void *param) { return NULL; } bool poll_event(Event *event) { return false; } bool set_sound_proc(void *param, SoundProc *proc, byte sound) {} void quit() { exit(1); } uint32 property(int param, Property *value) { return 0; } static OSystem *create(int gfx_mode, bool full_screen); private: uint msec_start; uint32 get_ticks(); }; void OSystem_NULL::init_size(uint w, uint h, byte sound) { msec_start = get_ticks(); } uint32 OSystem_NULL::get_ticks() { uint a = 0; #ifdef WIN32 a = GetTickCount(); #endif #ifdef UNIX struct timeval tv; gettimeofday(&tv, NULL); a = tv.tv_sec * 1000 + tv.tv_usec/1000; #endif return a; } void OSystem_NULL::delay_msecs(uint msecs) { #ifdef WIN32 Sleep(msecs); #endif #ifdef UNIX usleep(msecs*1000); #endif } uint32 OSystem_NULL::get_msecs() { return get_ticks() - msec_start; } OSystem *OSystem_NULL_create() { return new OSystem_NULL(); } #else /* USE_NULL_DRIVER */ OSystem *OSystem_NULL_create() { return NULL; } #endif