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-rw-r--r--backends/sdl/sdl-common.cpp859
1 files changed, 859 insertions, 0 deletions
diff --git a/backends/sdl/sdl-common.cpp b/backends/sdl/sdl-common.cpp
new file mode 100644
index 0000000000..f2a88e06a5
--- /dev/null
+++ b/backends/sdl/sdl-common.cpp
@@ -0,0 +1,859 @@
+/* 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.
+ *
+ * $Header$
+ *
+ */
+
+#include "sdl-common.h"
+#include "sound/mididrv.h"
+#include "gameDetector.h"
+#include "scaler.h"
+#include "scumm.h" // Only #included for error() and warning()
+
+#include "scummvm.xpm"
+
+
+bool atexit_proc_installed = false;
+void atexit_proc() {
+ SDL_ShowCursor(SDL_ENABLE);
+ SDL_Quit();
+}
+
+OSystem *OSystem_SDL_create(int gfx_mode, bool full_screen) {
+ return OSystem_SDL_Common::create(gfx_mode, full_screen);
+}
+
+OSystem *OSystem_SDL_Common::create(int gfx_mode, bool full_screen) {
+ OSystem_SDL_Common *syst = OSystem_SDL_Common::create();
+ 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());
+ }
+
+#ifdef WIN32 // Use waveout on win32, not
+ SDL_AudioInit("waveout"); // dsound - unfortunatly dsound
+#endif // doesn't do COOPERATIVE mode
+
+ SDL_ShowCursor(SDL_DISABLE);
+
+ // Setup the icon
+ syst->setup_icon();
+
+#ifndef MACOSX // Work around a bug in OS X
+ // Clean up on exit
+ atexit_proc_installed = true;
+ atexit(atexit_proc);
+#endif
+
+ return syst;
+}
+
+void OSystem_SDL_Common::set_timer(int timer, int (*callback)(int)) {
+ SDL_SetTimer(timer, (SDL_TimerCallback) callback);
+}
+
+void OSystem_SDL_Common::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();
+
+#ifdef MACOSX // Work around a bug in OS X 10.1 related to OpenGL in windowed mode
+ if (!atexit_proc_installed) {
+ atexit_proc_installed = true;
+ atexit(atexit_proc);
+ }
+#endif
+}
+
+void OSystem_SDL_Common::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_Common::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_Common::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_Common::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_Common::kbd_mouse() {
+ uint32 time = get_msecs();
+ if (time >= km.last_time + km.delay_time) {
+ km.last_time = time;
+ if (km.x_down_count == 1) {
+ km.x_down_time = time;
+ km.x_down_count = 2;
+ }
+ if (km.y_down_count == 1) {
+ km.y_down_time = time;
+ km.y_down_count = 2;
+ }
+
+ if (km.x_vel || km.y_vel) {
+ if (km.x_down_count) {
+ if (time > km.x_down_time + km.delay_time*12) {
+ if (km.x_vel > 0)
+ km.x_vel++;
+ else
+ km.x_vel--;
+ } else if (time > km.x_down_time + km.delay_time*8) {
+ if (km.x_vel > 0)
+ km.x_vel = 5;
+ else
+ km.x_vel = -5;
+ }
+ }
+ if (km.y_down_count) {
+ if (time > km.y_down_time + km.delay_time*12) {
+ if (km.y_vel > 0)
+ km.y_vel++;
+ else
+ km.y_vel--;
+ } else if (time > km.y_down_time + km.delay_time*8) {
+ if (km.y_vel > 0)
+ km.y_vel = 5;
+ else
+ km.y_vel = -5;
+ }
+ }
+
+ km.x += km.x_vel;
+ km.y += km.y_vel;
+
+ if (km.x < 0) {
+ km.x = 0;
+ km.x_vel = -1;
+ km.x_down_count = 1;
+ } else if (km.x > km.x_max) {
+ km.x = km.x_max;
+ km.x_vel = 1;
+ km.x_down_count = 1;
+ }
+
+ if (km.y < 0) {
+ km.y = 0;
+ km.y_vel = -1;
+ km.y_down_count = 1;
+ } else if (km.y > km.y_max) {
+ km.y = km.y_max;
+ km.y_vel = 1;
+ km.y_down_count = 1;
+ }
+
+ SDL_WarpMouse(km.x, km.y);
+ }
+ }
+}
+
+bool OSystem_SDL_Common::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_Common::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_Common::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_Common::set_shake_pos(int shake_pos) {
+ _new_shake_pos = shake_pos;
+}
+
+uint32 OSystem_SDL_Common::get_msecs() {
+ return SDL_GetTicks();
+}
+
+void OSystem_SDL_Common::delay_msecs(uint msecs) {
+ SDL_Delay(msecs);
+}
+
+void *OSystem_SDL_Common::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_Common::poll_event(Event *event) {
+ SDL_Event ev;
+ kbd_mouse();
+
+ 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') || (b == KBD_ALT && ev.key.keysym.sym=='x')) {
+ 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;
+ }
+ #ifdef QTOPIA
+ // quit on fn+backspace on zaurus
+ if (ev.key.keysym.sym==127) {
+ quit();
+ break;
+ }
+ // map menu key (f11) to f5 (scumm menu)
+ if (ev.key.keysym.sym==292) {
+ event->event_code = EVENT_KEYDOWN;
+ event->kbd.keycode = 286;
+ event->kbd.ascii = mapKey(286, ev.key.keysym.mod);
+ }
+ // map center (space) to tab (default action )
+ // i wanted to map the calendar button but the calendar comes up
+ //
+ else if (ev.key.keysym.sym==32) {
+ event->event_code = EVENT_KEYDOWN;
+ event->kbd.keycode = 9;
+ event->kbd.ascii = mapKey(9, ev.key.keysym.mod);
+ }
+ // since we stole space (pause) above we'll rebind it to the tab key on the keyboard
+ else if (ev.key.keysym.sym==9) {
+ event->event_code = EVENT_KEYDOWN;
+ event->kbd.keycode = 32;
+ event->kbd.ascii = mapKey(32, ev.key.keysym.mod);
+ }
+ else {
+ // let the events fall through if we didn't change them, this may not be the best way to
+ // set it up, but i'm not sure how sdl would like it if we let if fall through then redid it though.
+ // and yes i have an huge terminal size so i dont wrap soon enough.
+ event->event_code = EVENT_KEYDOWN;
+ event->kbd.keycode = ev.key.keysym.sym;
+ event->kbd.ascii = mapKey(ev.key.keysym.sym, ev.key.keysym.mod);
+ }
+ #endif
+ #ifndef QTOPIA
+ event->event_code = EVENT_KEYDOWN;
+ event->kbd.keycode = ev.key.keysym.sym;
+ event->kbd.ascii = mapKey(ev.key.keysym.sym, ev.key.keysym.mod);
+ #endif
+
+ switch(ev.key.keysym.sym) {
+ case SDLK_LEFT:
+ km.x_vel = -1;
+ km.x_down_count = 1;
+ break;
+ case SDLK_RIGHT:
+ km.x_vel = 1;
+ km.x_down_count = 1;
+ break;
+ case SDLK_UP:
+ km.y_vel = -1;
+ km.y_down_count = 1;
+ break;
+ case SDLK_DOWN:
+ km.y_vel = 1;
+ km.y_down_count = 1;
+ break;
+ default:
+ break;
+ }
+
+ return true;
+ }
+
+ case SDL_KEYUP: {
+ event->event_code = EVENT_KEYUP;
+ event->kbd.keycode = ev.key.keysym.sym;
+ event->kbd.ascii = mapKey(ev.key.keysym.sym, ev.key.keysym.mod);
+
+ switch(ev.key.keysym.sym){
+ case SDLK_LEFT:
+ if (km.x_vel < 0) {
+ km.x_vel = 0;
+ km.x_down_count = 0;
+ }
+ break;
+ case SDLK_RIGHT:
+ if (km.x_vel > 0) {
+ km.x_vel = 0;
+ km.x_down_count = 0;
+ }
+ break;
+ case SDLK_UP:
+ if (km.y_vel < 0) {
+ km.y_vel = 0;
+ km.y_down_count = 0;
+ }
+ break;
+ case SDLK_DOWN:
+ if (km.y_vel > 0) {
+ km.y_vel = 0;
+ km.y_down_count = 0;
+ }
+ break;
+ default:
+ break;
+ }
+ return true;
+ }
+
+ case SDL_MOUSEMOTION:
+ event->event_code = EVENT_MOUSEMOVE;
+ km.x = event->mouse.x = ev.motion.x;
+ km.y = 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;
+ km.x = event->mouse.x = ev.motion.x;
+ km.y = event->mouse.y = ev.motion.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_Common::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 = 2;
+ 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_Common::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);
+}
+
+uint32 OSystem_SDL_Common::property(int param, Property *value) {
+ switch(param) {
+
+ case PROP_GET_FULLSCREEN:
+ return _full_screen;
+
+ 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_Common::quit() {
+ if(cdrom) {
+ SDL_CDStop(cdrom);
+ SDL_CDClose(cdrom);
+ }
+ unload_gfx_mode();
+ exit(1);
+}
+
+void OSystem_SDL_Common::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_Common::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_Common::stop_cdrom() { /* Stop CD Audio in 1/10th of a second */
+ cd_stop_time = SDL_GetTicks() + 100;
+ cd_num_loops = 0;
+
+}
+
+void OSystem_SDL_Common::play_cdrom(int track, int num_loops, int start_frame, int end_frame) {
+ 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_Common::poll_cdrom() {
+ if (!cdrom)
+ return false;
+
+ return (cd_num_loops != 0 && (SDL_GetTicks() < cd_end_time || SDL_CDStatus(cdrom) != CD_STOPPED));
+}
+
+void OSystem_SDL_Common::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_Common::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);
+}
+
+void *OSystem_SDL_Common::create_mutex(void) {
+ return (void *) SDL_CreateMutex();
+}
+
+void OSystem_SDL_Common::lock_mutex(void *mutex) {
+ SDL_mutexP((SDL_mutex *) mutex);
+}
+
+void OSystem_SDL_Common::unlock_mutex(void *mutex) {
+ SDL_mutexV((SDL_mutex *) mutex);
+}
+
+void OSystem_SDL_Common::delete_mutex(void *mutex) {
+ SDL_DestroyMutex((SDL_mutex *) mutex);
+}
generated by cgit v1.2.3 (git 2.25.1) at 2025-07-04 09:28:50 +0000