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- /* -*- mode: c; tab-width: 4; c-basic-offset: 3; c-file-style: "linux" -*- */
- //
- // Copyright (c) 2009, Wei Mingzhi <whistler_wmz@users.sf.net>.
- // All rights reserved.
- //
- // This file is part of SDLPAL.
- //
- // SDLPAL 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 3 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, see <http://www.gnu.org/licenses/>.
- //
- #include "main.h"
- // Screen buffer
- SDL_Surface *gpScreen = NULL;
- // Backup screen buffer
- SDL_Surface *gpScreenBak = NULL;
- #if SDL_VERSION_ATLEAST(2,0,0)
- SDL_Window *gpWindow = NULL;
- static SDL_Renderer *gpRenderer = NULL;
- static SDL_Texture *gpTexture = NULL;
- static SDL_Texture *gpTouchOverlay = NULL;
- static SDL_Rect gOverlayRect;
- static SDL_Rect gTextureRect;
- #endif
- // The real screen surface
- static SDL_Surface *gpScreenReal = NULL;
- volatile BOOL g_bRenderPaused = FALSE;
- #if (defined (__SYMBIAN32__) && !defined (__S60_5X__)) || defined (PSP) || defined (GEKKO)
- static BOOL bScaleScreen = FALSE;
- #else
- static BOOL bScaleScreen = TRUE;
- #endif
- // Shake times and level
- static WORD g_wShakeTime = 0;
- static WORD g_wShakeLevel = 0;
- #if SDL_VERSION_ATLEAST(2, 0, 0)
- #define SDL_SoftStretch SDL_UpperBlit
- #endif
- static SDL_Texture *VIDEO_CreateTexture(int width, int height)
- {
- int texture_width, texture_height;
- float ratio = (float)width / (float)height;
- //
- // Check whether to keep the aspect ratio
- //
- if (gConfig.fKeepAspectRatio && ratio != 1.6f)
- {
- if (ratio > 1.6f)
- {
- texture_height = 200;
- texture_width = (int)(200 * ratio) & ~0x3;
- ratio = (float)height / 200.0f;
- }
- else
- {
- texture_width = 320;
- texture_height = (int)(320 / ratio) & ~0x3;
- ratio = (float)width / 320.0f;
- }
- WORD w = (WORD)(ratio * 320.0f) & ~0x3;
- WORD h = (WORD)(ratio * 200.0f) & ~0x3;
- gOverlayRect.x = (width - w) / 2;
- gOverlayRect.y = (height - h) / 2;
- gOverlayRect.w = w;
- gOverlayRect.h = h;
- gTextureRect.x = (texture_width - 320) / 2;
- gTextureRect.y = (texture_height - 200) / 2;
- gTextureRect.w = 320; gTextureRect.h = 200;
- PAL_SetTouchBounds(width, height, gOverlayRect);
- }
- else
- {
- texture_width = 320;
- texture_height = 200;
- gOverlayRect.x = gOverlayRect.y = 0;
- gOverlayRect.w = width;
- gOverlayRect.h = height;
- gTextureRect.x = gTextureRect.y = 0;
- gTextureRect.w = 320; gTextureRect.h = 200;
- }
- //
- // Create texture for screen.
- //
- return SDL_CreateTexture(gpRenderer, SDL_PIXELFORMAT_ARGB8888, SDL_TEXTUREACCESS_STREAMING, texture_width, texture_height);
- }
- INT
- VIDEO_Startup(
- VOID
- )
- /*++
- Purpose:
- Initialze the video subsystem.
- Parameters:
- None.
- Return value:
- 0 = success, -1 = fail to create the screen surface,
- -2 = fail to create screen buffer.
- --*/
- {
- #if SDL_VERSION_ATLEAST(2,0,0)
- //
- // Before we can render anything, we need a window and a renderer.
- //
- gpWindow = SDL_CreateWindow("Pal", SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED,
- gConfig.dwScreenWidth, gConfig.dwScreenHeight, PAL_VIDEO_INIT_FLAGS);
- if (gpWindow == NULL)
- {
- return -1;
- }
- gpRenderer = SDL_CreateRenderer(gpWindow, -1, SDL_RENDERER_ACCELERATED | SDL_RENDERER_PRESENTVSYNC);
- if (gpRenderer == NULL)
- {
- return -1;
- }
- #if defined (__IOS__)
- SDL_GL_SetAttribute(SDL_GL_DEPTH_SIZE, 0);
- SDL_GL_SetAttribute(SDL_GL_RETAINED_BACKING, 1);
- #endif
- //
- // Create the screen buffer and the backup screen buffer.
- //
- gpScreen = SDL_CreateRGBSurface(SDL_SWSURFACE, 320, 200, 8, 0, 0, 0, 0);
- gpScreenBak = SDL_CreateRGBSurface(SDL_SWSURFACE, 320, 200, 8, 0, 0, 0, 0);
- gpScreenReal = SDL_CreateRGBSurface(SDL_SWSURFACE, 320, 200, 32,
- 0x00FF0000, 0x0000FF00, 0x000000FF, 0xFF000000);
- //
- // Create texture for screen.
- //
- gpTexture = VIDEO_CreateTexture(gConfig.dwScreenWidth, gConfig.dwScreenHeight);
- //
- // Failed?
- //
- if (gpScreen == NULL || gpScreenBak == NULL || gpScreenReal == NULL || gpTexture == NULL)
- {
- if (gpScreen != NULL)
- {
- SDL_FreeSurface(gpScreen);
- gpScreen = NULL;
- }
- if (gpScreenBak != NULL)
- {
- SDL_FreeSurface(gpScreenBak);
- gpScreenBak = NULL;
- }
- if (gpScreenReal != NULL)
- {
- SDL_FreeSurface(gpScreenReal);
- gpScreenReal = NULL;
- }
- if (gpTexture != NULL)
- {
- SDL_DestroyTexture(gpTexture);
- gpTexture = NULL;
- }
- SDL_DestroyRenderer(gpRenderer);
- gpRenderer = NULL;
- SDL_DestroyWindow(gpWindow);
- gpWindow = NULL;
- return -2;
- }
- //
- // Create texture for overlay.
- //
- if (gConfig.fUseTouchOverlay)
- {
- extern const void * PAL_LoadOverlayBMP(void);
- extern int PAL_OverlayBMPLength();
- SDL_Surface *overlay = SDL_LoadBMP_RW(SDL_RWFromConstMem(PAL_LoadOverlayBMP(), PAL_OverlayBMPLength()), 1);
- if (overlay != NULL)
- {
- SDL_SetColorKey(overlay, SDL_RLEACCEL, SDL_MapRGB(overlay->format, 255, 0, 255));
- gpTouchOverlay = SDL_CreateTextureFromSurface(gpRenderer, overlay);
- SDL_SetTextureAlphaMod(gpTouchOverlay, 120);
- SDL_FreeSurface(overlay);
- }
- }
- #else
- //
- // Create the screen surface.
- //
- gpScreenReal = SDL_SetVideoMode(gConfig.dwScreenWidth, gConfig.dwScreenHeight, 8, PAL_VIDEO_INIT_FLAGS);
- if (gpScreenReal == NULL)
- {
- //
- // Fall back to 640x480 software mode.
- //
- gpScreenReal = SDL_SetVideoMode(640, 480, 8,
- SDL_SWSURFACE | (gConfig.fFullScreen ? SDL_FULLSCREEN : 0));
- }
- //
- // Still fail?
- //
- if (gpScreenReal == NULL)
- {
- return -1;
- }
- //
- // Create the screen buffer and the backup screen buffer.
- //
- gpScreen = SDL_CreateRGBSurface(gpScreenReal->flags & ~SDL_HWSURFACE, 320, 200, 8,
- gpScreenReal->format->Rmask, gpScreenReal->format->Gmask,
- gpScreenReal->format->Bmask, gpScreenReal->format->Amask);
- gpScreenBak = SDL_CreateRGBSurface(gpScreenReal->flags & ~SDL_HWSURFACE, 320, 200, 8,
- gpScreenReal->format->Rmask, gpScreenReal->format->Gmask,
- gpScreenReal->format->Bmask, gpScreenReal->format->Amask);
- //
- // Failed?
- //
- if (gpScreen == NULL || gpScreenBak == NULL)
- {
- if (gpScreen != NULL)
- {
- SDL_FreeSurface(gpScreen);
- gpScreen = NULL;
- }
- if (gpScreenBak != NULL)
- {
- SDL_FreeSurface(gpScreenBak);
- gpScreenBak = NULL;
- }
- SDL_FreeSurface(gpScreenReal);
- gpScreenReal = NULL;
- return -2;
- }
- if (gConfig.fFullScreen)
- {
- SDL_ShowCursor(FALSE);
- }
- #endif
- return 0;
- }
- VOID
- VIDEO_Shutdown(
- VOID
- )
- /*++
- Purpose:
- Shutdown the video subsystem.
- Parameters:
- None.
- Return value:
- None.
- --*/
- {
- if (gpScreen != NULL)
- {
- SDL_FreeSurface(gpScreen);
- }
- gpScreen = NULL;
- if (gpScreenBak != NULL)
- {
- SDL_FreeSurface(gpScreenBak);
- }
- gpScreenBak = NULL;
- #if SDL_VERSION_ATLEAST(2,0,0)
- if (gpTouchOverlay)
- {
- SDL_DestroyTexture(gpTouchOverlay);
- }
- gpTouchOverlay = NULL;
- if (gpTexture)
- {
- SDL_DestroyTexture(gpTexture);
- }
- gpTexture = NULL;
- if (gpRenderer)
- {
- SDL_DestroyRenderer(gpRenderer);
- }
- gpRenderer = NULL;
- if (gpWindow)
- {
- SDL_DestroyWindow(gpWindow);
- }
- gpWindow = NULL;
- #endif
- if (gpScreenReal != NULL)
- {
- SDL_FreeSurface(gpScreenReal);
- }
- gpScreenReal = NULL;
- }
- #if SDL_VERSION_ATLEAST(2,0,0)
- PAL_FORCE_INLINE
- VOID
- VIDEO_RenderCopy(
- VOID
- )
- {
- void *texture_pixels;
- int texture_pitch;
- SDL_LockTexture(gpTexture, NULL, &texture_pixels, &texture_pitch);
- memset(texture_pixels, 0, gTextureRect.y * texture_pitch);
- uint8_t *pixels = (uint8_t *)texture_pixels + gTextureRect.y * texture_pitch;
- uint8_t *src = (uint8_t *)gpScreenReal->pixels;
- int left_pitch = gTextureRect.x << 2;
- int right_pitch = texture_pitch - ((gTextureRect.x + gTextureRect.w) << 2);
- for (int y = 0; y < gTextureRect.h; y++, src += gpScreenReal->pitch)
- {
- memset(pixels, 0, left_pitch); pixels += left_pitch;
- memcpy(pixels, src, 320 << 2); pixels += 320 << 2;
- memset(pixels, 0, right_pitch); pixels += right_pitch;
- }
- memset(pixels, 0, gTextureRect.y * texture_pitch);
- SDL_UnlockTexture(gpTexture);
- SDL_RenderCopy(gpRenderer, gpTexture, NULL, NULL);
- if (gpTouchOverlay)
- {
- SDL_RenderCopy(gpRenderer, gpTouchOverlay, NULL, &gOverlayRect);
- }
- SDL_RenderPresent(gpRenderer);
- }
- #endif
- VOID
- VIDEO_UpdateScreen(
- const SDL_Rect *lpRect
- )
- /*++
- Purpose:
- Update the screen area specified by lpRect.
- Parameters:
- [IN] lpRect - Screen area to update.
- Return value:
- None.
- --*/
- {
- SDL_Rect srcrect, dstrect;
- short offset = 240 - 200;
- short screenRealHeight = gpScreenReal->h;
- short screenRealY = 0;
- #if SDL_VERSION_ATLEAST(2,0,0)
- if (g_bRenderPaused)
- {
- return;
- }
- #endif
- //
- // Lock surface if needed
- //
- if (SDL_MUSTLOCK(gpScreenReal))
- {
- if (SDL_LockSurface(gpScreenReal) < 0)
- return;
- }
- if (!bScaleScreen)
- {
- screenRealHeight -= offset;
- screenRealY = offset / 2;
- }
- if (lpRect != NULL)
- {
- dstrect.x = (SHORT)((INT)(lpRect->x) * gpScreenReal->w / gpScreen->w);
- dstrect.y = (SHORT)((INT)(screenRealY + lpRect->y) * screenRealHeight / gpScreen->h);
- dstrect.w = (WORD)((DWORD)(lpRect->w) * gpScreenReal->w / gpScreen->w);
- dstrect.h = (WORD)((DWORD)(lpRect->h) * screenRealHeight / gpScreen->h);
- SDL_SoftStretch(gpScreen, (SDL_Rect *)lpRect, gpScreenReal, &dstrect);
- }
- else if (g_wShakeTime != 0)
- {
- //
- // Shake the screen
- //
- srcrect.x = 0;
- srcrect.y = 0;
- srcrect.w = 320;
- srcrect.h = 200 - g_wShakeLevel;
- dstrect.x = 0;
- dstrect.y = screenRealY;
- dstrect.w = 320 * gpScreenReal->w / gpScreen->w;
- dstrect.h = (200 - g_wShakeLevel) * screenRealHeight / gpScreen->h;
- if (g_wShakeTime & 1)
- {
- srcrect.y = g_wShakeLevel;
- }
- else
- {
- dstrect.y = (screenRealY + g_wShakeLevel) * screenRealHeight / gpScreen->h;
- }
- SDL_SoftStretch(gpScreen, &srcrect, gpScreenReal, &dstrect);
- if (g_wShakeTime & 1)
- {
- dstrect.y = (screenRealY + screenRealHeight - g_wShakeLevel) * screenRealHeight / gpScreen->h;
- }
- else
- {
- dstrect.y = screenRealY;
- }
- dstrect.h = g_wShakeLevel * screenRealHeight / gpScreen->h;
- SDL_FillRect(gpScreenReal, &dstrect, 0);
- #if SDL_MAJOR_VERSION == 1 && SDL_MINOR_VERSION <= 2
- dstrect.x = dstrect.y = 0;
- dstrect.w = gpScreenReal->w;
- dstrect.h = gpScreenReal->h;
- #endif
- g_wShakeTime--;
- }
- else
- {
- dstrect.x = 0;
- dstrect.y = screenRealY;
- dstrect.w = gpScreenReal->w;
- dstrect.h = screenRealHeight;
- SDL_SoftStretch(gpScreen, NULL, gpScreenReal, &dstrect);
- #if SDL_MAJOR_VERSION == 1 && SDL_MINOR_VERSION <= 2
- dstrect.x = dstrect.y = 0;
- dstrect.w = gpScreenReal->w;
- dstrect.h = gpScreenReal->h;
- #endif
- }
- #if SDL_VERSION_ATLEAST(2,0,0)
- VIDEO_RenderCopy();
- #else
- SDL_UpdateRect(gpScreenReal, dstrect.x, dstrect.y, dstrect.w, dstrect.h);
- #endif
- if (SDL_MUSTLOCK(gpScreenReal))
- {
- SDL_UnlockSurface(gpScreenReal);
- }
- }
- VOID
- VIDEO_SetPalette(
- SDL_Color rgPalette[256]
- )
- /*++
- Purpose:
- Set the palette of the screen.
- Parameters:
- [IN] rgPalette - array of 256 colors.
- Return value:
- None.
- --*/
- {
- #if SDL_VERSION_ATLEAST(2,0,0)
- SDL_Palette *palette = SDL_AllocPalette(256);
- if (palette == NULL)
- {
- return;
- }
- SDL_SetPaletteColors(palette, rgPalette, 0, 256);
- SDL_SetSurfacePalette(gpScreen, palette);
- SDL_SetSurfacePalette(gpScreenBak, palette);
- //
- // HACKHACK: need to invalidate gpScreen->map otherwise the palette
- // would not be effective during blit
- //
- SDL_SetSurfaceColorMod(gpScreen, 0, 0, 0);
- SDL_SetSurfaceColorMod(gpScreen, 0xFF, 0xFF, 0xFF);
- SDL_SetSurfaceColorMod(gpScreenBak, 0, 0, 0);
- SDL_SetSurfaceColorMod(gpScreenBak, 0xFF, 0xFF, 0xFF);
- VIDEO_UpdateScreen(NULL);
- // The palette should be freed, or memory leak occurs.
- SDL_FreePalette(palette);
- #else
- SDL_SetPalette(gpScreen, SDL_LOGPAL | SDL_PHYSPAL, rgPalette, 0, 256);
- SDL_SetPalette(gpScreenBak, SDL_LOGPAL | SDL_PHYSPAL, rgPalette, 0, 256);
- SDL_SetPalette(gpScreenReal, SDL_LOGPAL | SDL_PHYSPAL, rgPalette, 0, 256);
- #if (defined (__SYMBIAN32__))
- {
- static UINT32 time = 0;
- if (SDL_GetTicks() - time > 50)
- {
- SDL_UpdateRect(gpScreenReal, 0, 0, gpScreenReal->w, gpScreenReal->h);
- time = SDL_GetTicks();
- }
- }
- #endif
- #endif
- }
- VOID
- VIDEO_Resize(
- INT w,
- INT h
- )
- /*++
- Purpose:
- This function is called when user resized the window.
- Parameters:
- [IN] w - width of the window after resizing.
- [IN] h - height of the window after resizing.
- Return value:
- None.
- --*/
- {
- #if SDL_VERSION_ATLEAST(2,0,0)
- if (gpTexture) SDL_DestroyTexture(gpTexture);
- gpTexture = VIDEO_CreateTexture(w, h);
- if (gpTexture == NULL)
- TerminateOnError("Re-creating texture failed on window resize!\n");
- #else
- DWORD flags;
- PAL_LARGE SDL_Color palette[256];
- int i;
- //
- // Get the original palette.
- //
- for (i = 0; i < gpScreenReal->format->palette->ncolors; i++)
- {
- palette[i] = gpScreenReal->format->palette->colors[i];
- }
- //
- // Create the screen surface.
- //
- flags = gpScreenReal->flags;
- SDL_FreeSurface(gpScreenReal);
- gpScreenReal = SDL_SetVideoMode(w, h, 8, flags);
- if (gpScreenReal == NULL)
- {
- #ifdef __SYMBIAN32__
- #ifdef __S60_5X__
- gpScreenReal = SDL_SetVideoMode(640, 360, 8, SDL_SWSURFACE);
- #else
- gpScreenReal = SDL_SetVideoMode(320, 240, 8, SDL_SWSURFACE);
- #endif
- #else
- //
- // Fall back to 640x480 software windowed mode.
- //
- gpScreenReal = SDL_SetVideoMode(640, 480, 8, SDL_SWSURFACE);
- #endif
- }
- SDL_SetPalette(gpScreenReal, SDL_PHYSPAL | SDL_LOGPAL, palette, 0, i);
- VIDEO_UpdateScreen(NULL);
- #endif
- }
- SDL_Color *
- VIDEO_GetPalette(
- VOID
- )
- /*++
- Purpose:
- Get the current palette of the screen.
- Parameters:
- None.
- Return value:
- Pointer to the current palette.
- --*/
- {
- #if SDL_VERSION_ATLEAST(2,0,0)
- return gpScreen->format->palette->colors;
- #else
- return gpScreenReal->format->palette->colors;
- #endif
- }
- VOID
- VIDEO_ToggleScaleScreen(
- VOID
- )
- /*++
- Purpose:
- Toggle scalescreen mode.
- Parameters:
- None.
- Return value:
- None.
- --*/
- {
- #ifdef __SYMBIAN32__
- bScaleScreen = !bScaleScreen;
- VIDEO_Resize(320, 240);
- VIDEO_UpdateScreen(NULL);
- #endif
- }
- VOID
- VIDEO_ToggleFullscreen(
- VOID
- )
- /*++
- Purpose:
- Toggle fullscreen mode.
- Parameters:
- None.
- Return value:
- None.
- --*/
- {
- #if SDL_VERSION_ATLEAST(2,0,0)
- if (gConfig.fFullScreen)
- {
- SDL_SetWindowFullscreen(gpWindow, 0);
- gConfig.fFullScreen = FALSE;
- }
- else
- {
- SDL_SetWindowFullscreen(gpWindow, SDL_WINDOW_FULLSCREEN_DESKTOP);
- gConfig.fFullScreen = TRUE;
- }
- #else
- DWORD flags;
- PAL_LARGE SDL_Color palette[256];
- int i;
- //
- // Get the original palette.
- //
- for (i = 0; i < gpScreenReal->format->palette->ncolors; i++)
- {
- palette[i] = gpScreenReal->format->palette->colors[i];
- }
- //
- // Get the flags of the original screen surface
- //
- flags = gpScreenReal->flags;
- if (flags & SDL_FULLSCREEN)
- {
- //
- // Already in fullscreen mode. Remove the fullscreen flag.
- //
- flags &= ~SDL_FULLSCREEN;
- flags |= SDL_RESIZABLE;
- SDL_ShowCursor(TRUE);
- }
- else
- {
- //
- // Not in fullscreen mode. Set the fullscreen flag.
- //
- flags |= SDL_FULLSCREEN;
- SDL_ShowCursor(FALSE);
- }
- //
- // Free the original screen surface
- //
- SDL_FreeSurface(gpScreenReal);
- //
- // ... and create a new one
- //
- if (gConfig.dwScreenWidth == 640 && gConfig.dwScreenHeight == 400 && (flags & SDL_FULLSCREEN))
- {
- gpScreenReal = SDL_SetVideoMode(640, 480, 8, flags);
- }
- else if (gConfig.dwScreenWidth == 640 && gConfig.dwScreenHeight == 480 && !(flags & SDL_FULLSCREEN))
- {
- gpScreenReal = SDL_SetVideoMode(640, 400, 8, flags);
- }
- else
- {
- gpScreenReal = SDL_SetVideoMode(gConfig.dwScreenWidth, gConfig.dwScreenHeight, 8, flags);
- }
- VIDEO_SetPalette(palette);
- //
- // Update the screen
- //
- VIDEO_UpdateScreen(NULL);
- #endif
- }
- VOID
- VIDEO_SaveScreenshot(
- VOID
- )
- /*++
- Purpose:
- Save the screenshot of current screen to a BMP file.
- Parameters:
- None.
- Return value:
- None.
- --*/
- {
- char filename[1024];
- #ifdef _WIN32
- SYSTEMTIME st;
- GetLocalTime(&st);
- sprintf(filename, "%s%04d%02d%02d%02d%02d%02d%03d.bmp", PAL_SCREENSHOT_PREFIX, st.wYear, st.wMonth, st.wDay, st.wHour, st.wMinute, st.wSecond, st.wMilliseconds);
- #else
- struct timeval tv;
- struct tm *ptm;
- gettimeofday(&tv, NULL);
- ptm = localtime(&tv.tv_sec);
- sprintf(filename, "%s%04d%02d%02d%02d%02d%02d%03d.bmp", PAL_SCREENSHOT_PREFIX, ptm->tm_year + 1900, ptm->tm_mon, ptm->tm_mday, ptm->tm_hour, ptm->tm_min, ptm->tm_sec, (int)(tv.tv_usec / 1000));
- #endif
-
- //
- // Save the screenshot.
- //
- #if SDL_VERSION_ATLEAST(2,0,0)
- SDL_SaveBMP(gpScreen, filename);
- #else
- SDL_SaveBMP(gpScreenReal, filename);
- #endif
- }
- VOID
- VIDEO_BackupScreen(
- VOID
- )
- /*++
- Purpose:
- Backup the screen buffer.
- Parameters:
- None.
- Return value:
- None.
- --*/
- {
- SDL_BlitSurface(gpScreen, NULL, gpScreenBak, NULL);
- }
- VOID
- VIDEO_RestoreScreen(
- VOID
- )
- /*++
- Purpose:
- Restore the screen buffer which has been saved with VIDEO_BackupScreen().
- Parameters:
- None.
- Return value:
- None.
- --*/
- {
- SDL_BlitSurface(gpScreenBak, NULL, gpScreen, NULL);
- }
- VOID
- VIDEO_ShakeScreen(
- WORD wShakeTime,
- WORD wShakeLevel
- )
- /*++
- Purpose:
- Set the screen shake time and level.
- Parameters:
- [IN] wShakeTime - how many times should we shake the screen.
- [IN] wShakeLevel - level of shaking.
- Return value:
- None.
- --*/
- {
- g_wShakeTime = wShakeTime;
- g_wShakeLevel = wShakeLevel;
- }
- VOID
- VIDEO_SwitchScreen(
- WORD wSpeed
- )
- /*++
- Purpose:
- Switch the screen from the backup screen buffer to the current screen buffer.
- NOTE: This will destroy the backup buffer.
- Parameters:
- [IN] wSpeed - speed of fading (the larger value, the slower).
- Return value:
- None.
- --*/
- {
- int i, j;
- const int rgIndex[6] = {0, 3, 1, 5, 2, 4};
- SDL_Rect dstrect;
- short offset = 240 - 200;
- short screenRealHeight = gpScreenReal->h;
- short screenRealY = 0;
- if (!bScaleScreen)
- {
- screenRealHeight -= offset;
- screenRealY = offset / 2;
- }
- wSpeed++;
- wSpeed *= 10;
- for (i = 0; i < 6; i++)
- {
- for (j = rgIndex[i]; j < gpScreen->pitch * gpScreen->h; j += 6)
- {
- ((LPBYTE)(gpScreenBak->pixels))[j] = ((LPBYTE)(gpScreen->pixels))[j];
- }
- //
- // Draw the backup buffer to the screen
- //
- dstrect.x = 0;
- dstrect.y = screenRealY;
- dstrect.w = gpScreenReal->w;
- dstrect.h = screenRealHeight;
- if (SDL_MUSTLOCK(gpScreenReal))
- {
- if (SDL_LockSurface(gpScreenReal) < 0)
- return;
- }
- SDL_SoftStretch(gpScreenBak, NULL, gpScreenReal, &dstrect);
- #if SDL_VERSION_ATLEAST(2, 0, 0)
- VIDEO_RenderCopy();
- #else
- SDL_UpdateRect(gpScreenReal, 0, 0, gpScreenReal->w, gpScreenReal->h);
- #endif
- if (SDL_MUSTLOCK(gpScreenReal))
- {
- SDL_UnlockSurface(gpScreenReal);
- }
- UTIL_Delay(wSpeed);
- }
- }
- VOID
- VIDEO_FadeScreen(
- WORD wSpeed
- )
- /*++
- Purpose:
- Fade from the backup screen buffer to the current screen buffer.
- NOTE: This will destroy the backup buffer.
- Parameters:
- [IN] wSpeed - speed of fading (the larger value, the slower).
- Return value:
- None.
- --*/
- {
- int i, j, k;
- DWORD time;
- BYTE a, b;
- const int rgIndex[6] = {0, 3, 1, 5, 2, 4};
- SDL_Rect dstrect;
- short offset = 240 - 200;
- short screenRealHeight = gpScreenReal->h;
- short screenRealY = 0;
- //
- // Lock surface if needed
- //
- if (SDL_MUSTLOCK(gpScreenReal))
- {
- if (SDL_LockSurface(gpScreenReal) < 0)
- return;
- }
- if (!bScaleScreen)
- {
- screenRealHeight -= offset;
- screenRealY = offset / 2;
- }
- time = SDL_GetTicks();
- wSpeed++;
- wSpeed *= 10;
- for (i = 0; i < 12; i++)
- {
- for (j = 0; j < 6; j++)
- {
- PAL_ProcessEvent();
- while (!SDL_TICKS_PASSED(SDL_GetTicks(), time))
- {
- PAL_ProcessEvent();
- SDL_Delay(5);
- }
- time = SDL_GetTicks() + wSpeed;
- //
- // Blend the pixels in the 2 buffers, and put the result into the
- // backup buffer
- //
- for (k = rgIndex[j]; k < gpScreen->pitch * gpScreen->h; k += 6)
- {
- a = ((LPBYTE)(gpScreen->pixels))[k];
- b = ((LPBYTE)(gpScreenBak->pixels))[k];
- if (i > 0)
- {
- if ((a & 0x0F) > (b & 0x0F))
- {
- b++;
- }
- else if ((a & 0x0F) < (b & 0x0F))
- {
- b--;
- }
- }
- ((LPBYTE)(gpScreenBak->pixels))[k] = ((a & 0xF0) | (b & 0x0F));
- }
- //
- // Draw the backup buffer to the screen
- //
- if (g_wShakeTime != 0)
- {
- //
- // Shake the screen
- //
- SDL_Rect srcrect, dstrect;
- srcrect.x = 0;
- srcrect.y = 0;
- srcrect.w = 320;
- srcrect.h = 200 - g_wShakeLevel;
- dstrect.x = 0;
- dstrect.y = screenRealY;
- dstrect.w = 320 * gpScreenReal->w / gpScreen->w;
- dstrect.h = (200 - g_wShakeLevel) * screenRealHeight / gpScreen->h;
- if (g_wShakeTime & 1)
- {
- srcrect.y = g_wShakeLevel;
- }
- else
- {
- dstrect.y = (screenRealY + g_wShakeLevel) * screenRealHeight / gpScreen->h;
- }
- SDL_SoftStretch(gpScreenBak, &srcrect, gpScreenReal, &dstrect);
- if (g_wShakeTime & 1)
- {
- dstrect.y = (screenRealY + screenRealHeight - g_wShakeLevel) * screenRealHeight / gpScreen->h;
- }
- else
- {
- dstrect.y = screenRealY;
- }
- dstrect.h = g_wShakeLevel * screenRealHeight / gpScreen->h;
- SDL_FillRect(gpScreenReal, &dstrect, 0);
- #if SDL_VERSION_ATLEAST(2, 0, 0)
- VIDEO_RenderCopy();
- #else
- SDL_UpdateRect(gpScreenReal, 0, 0, gpScreenReal->w, gpScreenReal->h);
- #endif
- g_wShakeTime--;
- }
- else
- {
- dstrect.x = 0;
- dstrect.y = screenRealY;
- dstrect.w = gpScreenReal->w;
- dstrect.h = screenRealHeight;
- SDL_SoftStretch(gpScreenBak, NULL, gpScreenReal, &dstrect);
- #if SDL_VERSION_ATLEAST(2, 0, 0)
- VIDEO_RenderCopy();
- #else
- SDL_UpdateRect(gpScreenReal, 0, 0, gpScreenReal->w, gpScreenReal->h);
- #endif
- }
- }
- }
- if (SDL_MUSTLOCK(gpScreenReal))
- {
- SDL_UnlockSurface(gpScreenReal);
- }
- //
- // Draw the result buffer to the screen as the final step
- //
- VIDEO_UpdateScreen(NULL);
- }
- #if SDL_VERSION_ATLEAST(2,0,0)
- /*++
- Purpose:
- Set the caption of the window. For compatibility with SDL2 only.
- Parameters:
- [IN] lpszCaption - the new caption of the window.
- [IN] lpReserved - not used, for compatibility only.
- Return value:
- None.
- --*/
- VOID
- SDL_WM_SetCaption(
- LPCSTR lpszCaption,
- LPVOID lpReserved
- )
- {
- if (gpWindow != NULL)
- {
- SDL_SetWindowTitle(gpWindow, lpszCaption);
- }
- }
- #endif
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