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scummvm/backends/sdl/sdl-common.cpp

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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.
*
* $Header$
*
*/
#include "sdl-common.h"
#include "sound/mididrv.h"
#include "common/scaler.h"
#include "common/engine.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());
}
SDL_ShowCursor(SDL_DISABLE);
// Enable unicode support if possible
SDL_EnableUNICODE(1);
#ifndef MACOSX // Don't set icon on OS X, as we use a nicer external icon there
// Setup the icon
syst->setup_icon();
#endif
#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);
}
OSystem_SDL_Common::OSystem_SDL_Common()
: _screen(0), _screenWidth(0), _screenHeight(0),
_tmpscreen(0), _tmpScreenWidth(0), _overlayVisible(false),
_cdrom(0), _dirty_checksums(0),
_mouseVisible(false), _mouseDrawn(false), _mouseData(0),
_mouseHotspotX(0), _mouseHotspotY(0),
_currentShakePos(0), _newShakePos(0)
{
// allocate palette storage
_currentPalette = (SDL_Color*)calloc(sizeof(SDL_Color), 256);
// allocate the dirty rect storage
_mouseBackup = (byte*)malloc(MAX_MOUSE_W * MAX_MOUSE_H * MAX_SCALING * 2);
// reset mouse state
memset(&km, 0, sizeof(km));
}
OSystem_SDL_Common::~OSystem_SDL_Common()
{
if (_dirty_checksums)
free(_dirty_checksums);
free(_currentPalette);
free(_mouseBackup);
}
void OSystem_SDL_Common::init_size(uint w, uint h) {
// Avoid redundant res changes
if ((int)w == _screenWidth && (int)h == _screenHeight)
return;
_screenWidth = w;
_screenHeight = h;
CKSUM_NUM = (_screenWidth*_screenHeight/(8*8));
if (_dirty_checksums)
free(_dirty_checksums);
_dirty_checksums = (uint32*)calloc(CKSUM_NUM*2, sizeof(uint32));
unload_gfx_mode();
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 (_screen == NULL)
return;
if (((uint32)buf & 3) == 0 && pitch == _screenWidth && x==0 && y==0 && w==_screenWidth && h==_screenHeight && _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 > _screenWidth-x) { w = _screenWidth - x; }
if (h > _screenHeight-y) { h = _screenHeight - 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 (_mouseDrawn)
undraw_mouse();
if (SDL_LockSurface(_screen) == -1)
error("SDL_LockSurface failed: %s.\n", SDL_GetError());
byte *dst = (byte *)_screen->pixels + y * _screenWidth + x;
do {
memcpy(dst, buf, w);
dst += _screenWidth;
buf += pitch;
} while (--h);
SDL_UnlockSurface(_screen);
}
void OSystem_SDL_Common::move_screen(int dx, int dy, int height) {
if ((dx == 0) && (dy == 0))
return;
if (dx == 0) {
// vertical movement
if (dy > 0) {
// move down
// copy from bottom to top
for (int y = height - 1; y >= dy; y--)
copy_rect((byte *)_screen->pixels + _screenWidth * (y - dy), _screenWidth, 0, y, _screenWidth, 1);
} else {
// move up
// copy from top to bottom
for (int y = 0; y < height + dx; y++)
copy_rect((byte *)_screen->pixels + _screenWidth * (y - dy), _screenWidth, 0, y, _screenWidth, 1);
}
} else if (dy == 0) {
// horizontal movement
if (dx > 0) {
// move right
// copy from right to left
for (int x = _screenWidth - 1; x >= dx; x--)
copy_rect((byte *)_screen->pixels + x - dx, _screenWidth, x, 0, 1, height);
} else {
// move left
// copy from left to right
for (int x = 0; x < _screenWidth; x++)
copy_rect((byte *)_screen->pixels + x - dx, _screenWidth, x, 0, 1, height);
}
} else {
// free movement
// not neccessary for now
}
}
void OSystem_SDL_Common::add_dirty_rect(int x, int y, int w, int h) {
if (_forceFull)
return;
if (_num_dirty_rects == NUM_DIRTY_RECT)
_forceFull = true;
else {
SDL_Rect *r = &_dirty_rect_list[_num_dirty_rects++];
// Extend the dirty region by 1 pixel for scalers
// that "smear" the screen, e.g. 2xSAI
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 > _screenWidth-x) { w = _screenWidth - x; }
if (h > _screenHeight-y) { h = _screenHeight - 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)*(_screenWidth/4)]; b ^= ((uint32*)buf)[1+(x)*(_screenWidth/4)]
void OSystem_SDL_Common::mk_checksums(const byte *buf) {
uint32 *sums = _dirty_checksums;
uint x,y;
const uint last_x = (uint)_screenWidth/8;
const uint last_y = (uint)_screenHeight/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+=_screenWidth*(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) {
_forceFull = 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 (!_forceFull) {
int x,y,w;
uint32 *ck = _dirty_checksums;
for(y=0; y!=_screenHeight/8; y++) {
for(x=0; x!=_screenWidth/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 != _screenWidth/8 && ck[w] != ck[w+CKSUM_NUM]);
add_dirty_rect(x*8, y*8, w*8, 8);
if (_forceFull)
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 (_mouseVisible == visible)
return visible;
bool last = _mouseVisible;
_mouseVisible = visible;
if (visible)
draw_mouse();
else
undraw_mouse();
return last;
}
void OSystem_SDL_Common::set_mouse_pos(int x, int y) {
if (x != _mouseCurState.x || y != _mouseCurState.y) {
_mouseCurState.x = x;
_mouseCurState.y = y;
undraw_mouse();
}
}
void OSystem_SDL_Common::warp_mouse(int x, int y) {
// FIXME: For whatever reason, I can't get CMI's cannon scene to work
// properly in fullscreen mode unless I temporarily show the mouse
// cursor here.
if (_full_screen) SDL_ShowCursor(SDL_ENABLE);
SDL_WarpMouse(x * _scaleFactor, y * _scaleFactor);
if (_full_screen) SDL_ShowCursor(SDL_DISABLE);
set_mouse_pos(x, y);
}
void OSystem_SDL_Common::set_mouse_cursor(const byte *buf, uint w, uint h, int hotspot_x, int hotspot_y) {
assert(0 <= w && w <= MAX_MOUSE_W);
assert(0 <= h && h <= MAX_MOUSE_H);
_mouseCurState.w = w;
_mouseCurState.h = h;
_mouseHotspotX = hotspot_x;
_mouseHotspotY = hotspot_y;
_mouseData = (byte*)buf;
undraw_mouse();
}
void OSystem_SDL_Common::set_shake_pos(int shake_pos) {
_newShakePos = 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);
}
static int mapKey(SDLKey key, SDLMod mod, Uint16 unicode)
{
if (key >= SDLK_F1 && key <= SDLK_F9) {
return key - SDLK_F1 + 315;
} else if (key >= SDLK_UP && key <= SDLK_PAGEDOWN) {
return key;
} else if (unicode) {
return unicode;
} else if (key >= 'a' && key <= 'z' && mod & KMOD_SHIFT) {
return 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;
// Alt-Return toggles full screen mode
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;
}
// Ctr-Alt-1 till Ctrl-Alt-7 will change the GFX mode
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 MACOSX
// quit on Cmd-Q on Mac
if ((ev.key.keysym.mod & KMOD_META) && ev.key.keysym.sym=='q') {
quit();
break;
}
#endif
#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 == SDLK_F11) {
event->event_code = EVENT_KEYDOWN;
event->kbd.keycode = SDLK_F5;
event->kbd.ascii = mapKey(SDLK_F5, ev.key.keysym.mod, 0);
}
// 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 == SDLK_SPACE) {
event->event_code = EVENT_KEYDOWN;
event->kbd.keycode = SDLK_TAB;
event->kbd.ascii = mapKey(SDLK_TAB, ev.key.keysym.mod, 0);
}
// since we stole space (pause) above we'll rebind it to the tab key on the keyboard
else if (ev.key.keysym.sym == SDLK_TAB) {
event->event_code = EVENT_KEYDOWN;
event->kbd.keycode = SDLK_SPACE;
event->kbd.ascii = mapKey(SDLK_SPACE, ev.key.keysym.mod, 0);
}
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, ev.key.keysym.unicode);
}
#else
event->event_code = EVENT_KEYDOWN;
event->kbd.keycode = ev.key.keysym.sym;
event->kbd.ascii = mapKey(ev.key.keysym.sym, ev.key.keysym.mod, ev.key.keysym.unicode);
#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, ev.key.keysym.unicode);
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 /= _scaleFactor;
event->mouse.y /= _scaleFactor;
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;
#if defined(SDL_BUTTON_WHEELUP) && defined(SDL_BUTTON_WHEELDOWN)
else if (ev.button.button == SDL_BUTTON_WHEELUP)
event->event_code = EVENT_WHEELUP;
else if (ev.button.button == SDL_BUTTON_WHEELDOWN)
event->event_code = EVENT_WHEELDOWN;
#endif
else
break;
km.x = event->mouse.x = ev.motion.x;
km.y = event->mouse.y = ev.motion.y;
event->mouse.x /= _scaleFactor;
event->mouse.y /= _scaleFactor;
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 /= _scaleFactor;
event->mouse.y /= _scaleFactor;
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;
}
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_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(0);
}
void OSystem_SDL_Common::draw_mouse() {
if (_mouseDrawn || !_mouseVisible)
return;
int x = _mouseCurState.x - _mouseHotspotX;
int y = _mouseCurState.y - _mouseHotspotY;
int w = _mouseCurState.w;
int h = _mouseCurState.h;
byte color;
byte *src = _mouseData; // Image representing the mouse
// 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 * _mouseCurState.w;
y = 0;
}
if (w > _screenWidth - x)
w = _screenWidth - x;
if (h > _screenHeight - y)
h = _screenHeight - y;
// Quick check to see if anything has to be drawn at all
if (w <= 0 || h <= 0)
return;
// Store the bounding box so that undraw mouse can restore the area the
// mouse currently covers to its original content.
_mouseOldState.x = x;
_mouseOldState.y = y;
_mouseOldState.w = w;
_mouseOldState.h = h;
// Draw the mouse cursor; backup the covered area in "bak"
if (SDL_LockSurface(_overlayVisible ? _tmpscreen : _screen) == -1)
error("SDL_LockSurface failed: %s.\n", SDL_GetError());
// Mark as dirty
add_dirty_rect(x, y, w, h);
if (!_overlayVisible) {
byte *bak = _mouseBackup; // Surface used to backup the area obscured by the mouse
byte *dst; // Surface we are drawing into
dst = (byte *)_screen->pixels + y * _screenWidth + 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 += _mouseCurState.w - w;
bak += MAX_MOUSE_W - w;
dst += _screenWidth - w;
h--;
}
} else {
uint16 *bak = (uint16*)_mouseBackup; // Surface used to backup the area obscured by the mouse
uint16 *dst; // Surface we are drawing into
dst = (uint16 *)_tmpscreen->pixels + (y+1) * _tmpScreenWidth + (x+1);
while (h > 0) {
int width = w;
while (width > 0) {
*bak++ = *dst;
color = *src++;
if (color != 0xFF) // 0xFF = transparent, don't draw
*dst = RBGToColor(_currentPalette[color].r, _currentPalette[color].g, _currentPalette[color].b);
dst++;
width--;
}
src += _mouseCurState.w - w;
bak += MAX_MOUSE_W - w;
dst += _tmpScreenWidth - w;
h--;
}
}
SDL_UnlockSurface(_overlayVisible ? _tmpscreen : _screen);
// Finally, set the flag to indicate the mouse has been drawn
_mouseDrawn = true;
}
void OSystem_SDL_Common::undraw_mouse() {
if (!_mouseDrawn)
return;
_mouseDrawn = false;
if (SDL_LockSurface(_overlayVisible ? _tmpscreen : _screen) == -1)
error("SDL_LockSurface failed: %s.\n", SDL_GetError());
const int old_mouse_x = _mouseOldState.x;
const int old_mouse_y = _mouseOldState.y;
const int old_mouse_w = _mouseOldState.w;
const int old_mouse_h = _mouseOldState.h;
int x, y;
if (!_overlayVisible) {
byte *dst, *bak = _mouseBackup;
// No need to do clipping here, since draw_mouse() did that already
dst = (byte *)_screen->pixels + old_mouse_y * _screenWidth + old_mouse_x;
for (y = 0; y < old_mouse_h; ++y, bak += MAX_MOUSE_W, dst += _screenWidth) {
for (x = 0; x < old_mouse_w; ++x) {
dst[x] = bak[x];
}
}
} else {
uint16 *dst, *bak = (uint16 *)_mouseBackup;
// No need to do clipping here, since draw_mouse() did that already
dst = (uint16 *)_tmpscreen->pixels + (old_mouse_y+1) * _tmpScreenWidth + (old_mouse_x+1);
for (y = 0; y < old_mouse_h; ++y, bak += MAX_MOUSE_W, dst += _tmpScreenWidth) {
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(_overlayVisible ? _tmpscreen : _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);
if (start_frame == 0 && end_frame == 0)
SDL_CDPlayTracks(_cdrom, track, 0, 1, 0);
else
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) {
if (cd_start_frame == 0 && cd_end_frame == 0)
SDL_CDPlayTracks(_cdrom, cd_track, 0, 1, 0);
else
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);
}
void OSystem_SDL_Common::show_overlay()
{
// hide the mouse
undraw_mouse();
_overlayVisible = true;
clear_overlay();
}
void OSystem_SDL_Common::hide_overlay()
{
// hide the mouse
undraw_mouse();
_overlayVisible = false;
_forceFull = true;
}
void OSystem_SDL_Common::clear_overlay()
{
if (!_overlayVisible)
return;
// hide the mouse
undraw_mouse();
// Clear the overlay by making the game screen "look through" everywhere.
SDL_Rect src, dst;
src.x = src.y = 0;
dst.x = dst.y = 1;
src.w = dst.w = _screenWidth;
src.h = dst.h = _screenHeight;
if (SDL_BlitSurface(_screen, &src, _tmpscreen, &dst) != 0)
error("SDL_BlitSurface failed: %s", SDL_GetError());
_forceFull = true;
}
int16 OSystem_SDL_Common::get_height() {
return _screenHeight;
}
int16 OSystem_SDL_Common::get_width() {
return _screenWidth;
}
void OSystem_SDL_Common::grab_overlay(int16 *buf, int pitch)
{
if (!_overlayVisible)
return;
if (_tmpscreen == NULL)
return;
// hide the mouse
undraw_mouse();
if (SDL_LockSurface(_tmpscreen) == -1)
error("SDL_LockSurface failed: %s.\n", SDL_GetError());
int16 *src = (int16 *)_tmpscreen->pixels + _tmpScreenWidth + 1;
int h = _screenHeight;
do {
memcpy(buf, src, _screenWidth*2);
src += _tmpScreenWidth;
buf += pitch;
} while (--h);
SDL_UnlockSurface(_tmpscreen);
}
void OSystem_SDL_Common::copy_rect_overlay(const int16 *buf, int pitch, int x, int y, int w, int h)
{
if (!_overlayVisible)
return;
if (_tmpscreen == NULL)
return;
// Clip the coordinates
if (x < 0) { w+=x; buf-=x; x = 0; }
if (y < 0) { h+=y; buf-=y*pitch; y = 0; }
if (w > _screenWidth-x) { w = _screenWidth - x; }
if (h > _screenHeight-y) { h = _screenHeight - y; }
if (w <= 0 || h <= 0)
return;
// Mark the modified region as dirty
cksum_valid = false;
add_dirty_rect(x, y, w, h);
/* FIXME: undraw mouse only if the draw rect intersects with the mouse rect */
undraw_mouse();
if (SDL_LockSurface(_tmpscreen) == -1)
error("SDL_LockSurface failed: %s.\n", SDL_GetError());
int16 *dst = (int16 *)_tmpscreen->pixels + (y+1) * _tmpScreenWidth + (x+1);
do {
memcpy(dst, buf, w*2);
dst += _tmpScreenWidth;
buf += pitch;
} while (--h);
SDL_UnlockSurface(_tmpscreen);
}
int16 OSystem_SDL_Common::RBGToColor(uint8 r, uint8 g, uint8 b)
{
return SDL_MapRGB(_tmpscreen->format, r, g, b);
}
void OSystem_SDL_Common::colorToRBG(int16 color, uint8 &r, uint8 &g, uint8 &b)
{
SDL_GetRGB(color, _tmpscreen->format, &r, &g, &b);
}
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