src/SDL_compat.c
changeset 1895 c121d94672cb
child 1897 c2a27da60b18
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/SDL_compat.c	Mon Jul 10 21:04:37 2006 +0000
@@ -0,0 +1,1415 @@
+/*
+    SDL - Simple DirectMedia Layer
+    Copyright (C) 1997-2006 Sam Lantinga
+
+    This library is free software; you can redistribute it and/or
+    modify it under the terms of the GNU Lesser General Public
+    License as published by the Free Software Foundation; either
+    version 2.1 of the License, or (at your option) any later version.
+
+    This library 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
+    Lesser General Public License for more details.
+
+    You should have received a copy of the GNU Lesser General Public
+    License along with this library; if not, write to the Free Software
+    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+
+    Sam Lantinga
+    slouken@libsdl.org
+*/
+#include "SDL_config.h"
+
+/* This file contains functions for backwards compatibility with SDL 1.2 */
+
+#include "SDL.h"
+#include "SDL_syswm.h"
+
+#include "video/SDL_sysvideo.h"
+#include "video/SDL_pixels_c.h"
+
+
+static SDL_WindowID SDL_VideoWindow;
+static SDL_TextureID SDL_VideoTexture;
+static SDL_Surface *SDL_VideoSurface;
+static SDL_Surface *SDL_ShadowSurface;
+static SDL_Surface *SDL_PublicSurface;
+static char *wm_title;
+
+char *
+SDL_AudioDriverName(char *namebuf, int maxlen)
+{
+    const char *name = SDL_GetCurrentAudioDriver();
+    if (name) {
+        SDL_strlcpy(namebuf, name, maxlen);
+        return namebuf;
+    }
+    return NULL;
+}
+
+char *
+SDL_VideoDriverName(char *namebuf, int maxlen)
+{
+    const char *name = SDL_GetCurrentVideoDriver();
+    if (name) {
+        SDL_strlcpy(namebuf, name, maxlen);
+        return namebuf;
+    }
+    return NULL;
+}
+
+const SDL_VideoInfo *
+SDL_GetVideoInfo(void)
+{
+    static SDL_VideoInfo info;
+
+    /* Memory leak, compatibility code, who cares? */
+    if (!info.vfmt && SDL_GetDesktopDisplayMode()) {
+        int bpp;
+        Uint32 Rmask, Gmask, Bmask, Amask;
+
+        SDL_PixelFormatEnumToMasks(SDL_GetDesktopDisplayMode()->format, &bpp,
+                                   &Rmask, &Gmask, &Bmask, &Amask);
+        info.vfmt = SDL_AllocFormat(bpp, Rmask, Gmask, Bmask, Amask);
+    }
+    return &info;
+}
+
+int
+SDL_VideoModeOK(int width, int height, int bpp, Uint32 flags)
+{
+    int i, actual_bpp = 0;
+
+    if (!SDL_GetVideoDevice()) {
+        return 0;
+    }
+
+    if (!(flags & SDL_FULLSCREEN)) {
+        return SDL_BITSPERPIXEL(SDL_GetDesktopDisplayMode()->format);
+    }
+
+    for (i = 0; i < SDL_GetNumDisplayModes(); ++i) {
+        const SDL_DisplayMode *mode = SDL_GetDisplayMode(i);
+        if (!mode->w || !mode->h || (width == mode->w && height == mode->h)) {
+            if (!mode->format) {
+                return bpp;
+            }
+            if (SDL_BITSPERPIXEL(mode->format) >= (Uint32) bpp) {
+                actual_bpp = SDL_BITSPERPIXEL(mode->format);
+            }
+        }
+    }
+    return actual_bpp;
+}
+
+SDL_Rect **
+SDL_ListModes(SDL_PixelFormat * format, Uint32 flags)
+{
+    int i, nmodes;
+    SDL_Rect **modes;
+
+    if (!SDL_GetVideoDevice()) {
+        return NULL;
+    }
+
+    if (!(flags & SDL_FULLSCREEN)) {
+        return (SDL_Rect **) (-1);
+    }
+
+    /* Memory leak, but this is a compatibility function, who cares? */
+    nmodes = 0;
+    modes = NULL;
+    for (i = 0; i < SDL_GetNumDisplayModes(); ++i) {
+        const SDL_DisplayMode *mode = SDL_GetDisplayMode(i);
+        if (!mode->w || !mode->h) {
+            return (SDL_Rect **) (-1);
+        }
+        if (SDL_BITSPERPIXEL(mode->format) != format->BitsPerPixel) {
+            continue;
+        }
+        if (nmodes > 0 && modes[nmodes - 1]->w == mode->w
+            && modes[nmodes - 1]->h == mode->h) {
+            continue;
+        }
+
+        modes = SDL_realloc(modes, (nmodes + 2) * sizeof(*modes));
+        if (!modes) {
+            return NULL;
+        }
+        modes[nmodes] = (SDL_Rect *) SDL_malloc(sizeof(SDL_Rect));
+        if (!modes[nmodes]) {
+            return NULL;
+        }
+        modes[nmodes]->x = 0;
+        modes[nmodes]->y = 0;
+        modes[nmodes]->w = mode->w;
+        modes[nmodes]->h = mode->h;
+        ++nmodes;
+    }
+    if (modes) {
+        modes[nmodes] = NULL;
+    }
+    return modes;
+}
+
+static int
+SDL_CompatEventFilter(void *userdata, SDL_Event * event)
+{
+    SDL_Event fake;
+
+    switch (event->type) {
+    case SDL_WINDOWEVENT:
+        switch (event->window.event) {
+        case SDL_WINDOWEVENT_EXPOSED:
+            if (!SDL_HasEvent(SDL_VIDEOEXPOSEMASK)) {
+                fake.type = SDL_VIDEOEXPOSE;
+                SDL_PushEvent(&fake);
+            }
+            break;
+        case SDL_WINDOWEVENT_RESIZED:
+            fake.type = SDL_VIDEORESIZE;
+            fake.resize.w = event->window.data1;
+            fake.resize.h = event->window.data2;
+            SDL_PushEvent(&fake);
+            break;
+        case SDL_WINDOWEVENT_MINIMIZED:
+            fake.type = SDL_ACTIVEEVENT;
+            fake.active.gain = 0;
+            fake.active.state = SDL_APPACTIVE;
+            SDL_PushEvent(&fake);
+            break;
+        case SDL_WINDOWEVENT_RESTORED:
+            fake.type = SDL_ACTIVEEVENT;
+            fake.active.gain = 1;
+            fake.active.state = SDL_APPACTIVE;
+            SDL_PushEvent(&fake);
+            break;
+        case SDL_WINDOWEVENT_ENTER:
+            fake.type = SDL_ACTIVEEVENT;
+            fake.active.gain = 1;
+            fake.active.state = SDL_APPMOUSEFOCUS;
+            SDL_PushEvent(&fake);
+            break;
+        case SDL_WINDOWEVENT_LEAVE:
+            fake.type = SDL_ACTIVEEVENT;
+            fake.active.gain = 0;
+            fake.active.state = SDL_APPMOUSEFOCUS;
+            SDL_PushEvent(&fake);
+            break;
+        case SDL_WINDOWEVENT_FOCUS_GAINED:
+            fake.type = SDL_ACTIVEEVENT;
+            fake.active.gain = 1;
+            fake.active.state = SDL_APPINPUTFOCUS;
+            SDL_PushEvent(&fake);
+            break;
+        case SDL_WINDOWEVENT_FOCUS_LOST:
+            fake.type = SDL_ACTIVEEVENT;
+            fake.active.gain = 1;
+            fake.active.state = SDL_APPINPUTFOCUS;
+            SDL_PushEvent(&fake);
+            break;
+        case SDL_WINDOWEVENT_CLOSE:
+            fake.type = SDL_QUIT;
+            SDL_PushEvent(&fake);
+            break;
+        }
+    case SDL_KEYDOWN:
+    case SDL_KEYUP:
+        {
+            Uint32 unicode = 0;
+            if (event->key.type == SDL_KEYDOWN && event->key.keysym.sym < 256) {
+                unicode = event->key.keysym.sym;
+                if (unicode >= 'a' && unicode <= 'z') {
+                    int shifted = !!(event->key.keysym.mod & KMOD_SHIFT);
+                    int capslock = !!(event->key.keysym.mod & KMOD_CAPS);
+                    if ((shifted ^ capslock) != 0) {
+                        unicode = SDL_toupper(unicode);
+                    }
+                }
+            }
+            if (unicode) {
+                event->key.keysym.unicode = unicode;
+            }
+            break;
+        }
+    case SDL_MOUSEWHEEL:
+        {
+            Uint8 button;
+            int selected;
+            int x, y;
+
+            selected = SDL_SelectMouse(event->wheel.which);
+            SDL_GetMouseState(&x, &y);
+            SDL_SelectMouse(selected);
+
+            if (event->wheel.motion > 0) {
+                button = SDL_BUTTON_WHEELUP;
+            } else {
+                button = SDL_BUTTON_WHEELDOWN;
+            }
+
+            fake.button.which = event->wheel.windowID;
+            fake.button.button = button;
+            fake.button.x = x;
+            fake.button.y = y;
+            fake.button.windowID = event->wheel.windowID;
+
+            fake.type = SDL_MOUSEBUTTONDOWN;
+            fake.button.state = SDL_PRESSED;
+            SDL_PushEvent(&fake);
+
+            fake.type = SDL_MOUSEBUTTONUP;
+            fake.button.state = SDL_RELEASED;
+            SDL_PushEvent(&fake);
+            break;
+        }
+
+    }
+    return 1;
+}
+
+static int
+SDL_VideoPaletteChanged(void *userdata, SDL_Palette * palette)
+{
+    if (userdata == SDL_ShadowSurface) {
+        /* If the shadow palette changed, make the changes visible */
+        if (!SDL_VideoSurface->format->palette) {
+            SDL_UpdateRect(SDL_ShadowSurface, 0, 0, 0, 0);
+        }
+    }
+    if (userdata == SDL_VideoSurface) {
+        return SDL_SetDisplayPalette(palette->colors, 0, palette->ncolors);
+    }
+    return 0;
+}
+
+static void
+GetEnvironmentWindowPosition(int w, int h, int *x, int *y)
+{
+    const char *window = SDL_getenv("SDL_VIDEO_WINDOW_POS");
+    const char *center = SDL_getenv("SDL_VIDEO_CENTERED");
+    if (window) {
+        if (SDL_sscanf(window, "%d,%d", x, y) == 2) {
+            return;
+        }
+        if (SDL_strcmp(window, "center") == 0) {
+            center = window;
+        }
+    }
+    if (center) {
+        const SDL_DisplayMode *current = SDL_GetDesktopDisplayMode();
+        *x = (current->w - w) / 2;
+        *y = (current->h - h) / 2;
+    }
+}
+
+SDL_Surface *
+SDL_SetVideoMode(int width, int height, int bpp, Uint32 flags)
+{
+    const SDL_DisplayMode *desktop_mode;
+    SDL_DisplayMode mode;
+    int window_x = SDL_WINDOWPOS_UNDEFINED;
+    int window_y = SDL_WINDOWPOS_UNDEFINED;
+    Uint32 window_flags;
+    Uint32 desktop_format;
+    Uint32 desired_format;
+    Uint32 surface_flags;
+
+    if (!SDL_GetVideoDevice()) {
+        if (SDL_Init(SDL_INIT_VIDEO | SDL_INIT_NOPARACHUTE) < 0) {
+            return NULL;
+        }
+    }
+
+    /* Destroy existing window */
+    SDL_PublicSurface = NULL;
+    if (SDL_ShadowSurface) {
+        SDL_FreeSurface(SDL_ShadowSurface);
+        SDL_ShadowSurface = NULL;
+    }
+    if (SDL_VideoSurface) {
+        SDL_DelPaletteWatch(SDL_VideoSurface->format->palette,
+                            SDL_VideoPaletteChanged, NULL);
+        SDL_FreeSurface(SDL_VideoSurface);
+        SDL_VideoSurface = NULL;
+    }
+    if (SDL_VideoWindow) {
+        SDL_GetWindowPosition(SDL_VideoWindow, &window_x, &window_y);
+    }
+    SDL_DestroyWindow(SDL_VideoWindow);
+
+    /* Set up the event filter */
+    if (!SDL_GetEventFilter(NULL, NULL)) {
+        SDL_SetEventFilter(SDL_CompatEventFilter, NULL);
+    }
+
+    /* Create a new window */
+    window_flags = SDL_WINDOW_SHOWN;
+    if (flags & SDL_FULLSCREEN) {
+        window_flags |= SDL_WINDOW_FULLSCREEN;
+    }
+    if (flags & SDL_OPENGL) {
+        window_flags |= SDL_WINDOW_OPENGL;
+    }
+    if (flags & SDL_RESIZABLE) {
+        window_flags |= SDL_WINDOW_RESIZABLE;
+    }
+    if (flags & SDL_NOFRAME) {
+        window_flags |= SDL_WINDOW_BORDERLESS;
+    }
+    GetEnvironmentWindowPosition(width, height, &window_x, &window_y);
+    SDL_SetFullscreenDisplayMode(NULL);
+    SDL_VideoWindow =
+        SDL_CreateWindow(wm_title, window_x, window_y, width, height,
+                         window_flags);
+    if (!SDL_VideoWindow) {
+        return NULL;
+    }
+
+    window_flags = SDL_GetWindowFlags(SDL_VideoWindow);
+    surface_flags = 0;
+    if (window_flags & SDL_WINDOW_FULLSCREEN) {
+        surface_flags |= SDL_FULLSCREEN;
+    }
+    if (window_flags & SDL_WINDOW_OPENGL) {
+        surface_flags |= SDL_OPENGL;
+    }
+    if (window_flags & SDL_WINDOW_RESIZABLE) {
+        surface_flags |= SDL_RESIZABLE;
+    }
+    if (window_flags & SDL_WINDOW_BORDERLESS) {
+        surface_flags |= SDL_NOFRAME;
+    }
+
+    /* Set up the desired display mode */
+    desktop_mode = SDL_GetDesktopDisplayMode();
+    desktop_format = desktop_mode->format;
+    if (desktop_format && ((flags & SDL_ANYFORMAT)
+                           || (bpp == SDL_BITSPERPIXEL(desktop_format)))) {
+        desired_format = desktop_format;
+    } else {
+        switch (bpp) {
+        case 0:
+            if (desktop_format) {
+                desired_format = desktop_format;
+            } else {
+                desired_format = SDL_PixelFormat_RGB888;
+            }
+            break;
+        case 8:
+            desired_format = SDL_PixelFormat_Index8;
+            break;
+        case 15:
+            desired_format = SDL_PixelFormat_RGB555;
+            break;
+        case 16:
+            desired_format = SDL_PixelFormat_RGB565;
+            break;
+        case 24:
+            desired_format = SDL_PixelFormat_RGB24;
+            break;
+        case 32:
+            desired_format = SDL_PixelFormat_RGB888;
+            break;
+        default:
+            SDL_SetError("Unsupported bpp in SDL_SetVideoMode()");
+            return NULL;
+        }
+    }
+    mode.format = desired_format;
+    mode.w = width;
+    mode.h = height;
+    mode.refresh_rate = 0;
+
+    /* Set the desired display mode */
+    if (flags & SDL_FULLSCREEN) {
+        if (SDL_SetFullscreenDisplayMode(&mode) < 0) {
+            return NULL;
+        }
+    }
+
+    /* If we're in OpenGL mode, just create a stub surface and we're done! */
+    if (flags & SDL_OPENGL) {
+        SDL_VideoSurface =
+            SDL_CreateRGBSurfaceFrom(NULL, width, height, bpp, 0, 0, 0, 0, 0);
+        if (!SDL_VideoSurface) {
+            return NULL;
+        }
+        SDL_VideoSurface->flags |= surface_flags;
+        SDL_PublicSurface = SDL_VideoSurface;
+        return SDL_PublicSurface;
+    }
+
+    /* Create a renderer for the window */
+    if (SDL_CreateRenderer(SDL_VideoWindow, -1, 0) < 0) {
+        return NULL;
+    }
+
+    /* Create a texture for the screen surface */
+    SDL_VideoTexture =
+        SDL_CreateTexture(desired_format, SDL_TextureAccess_Local, width,
+                          height);
+    if (!SDL_VideoTexture) {
+        SDL_VideoTexture =
+            SDL_CreateTexture(0, SDL_TextureAccess_Local, width, height);
+    }
+    if (!SDL_VideoTexture) {
+        return NULL;
+    }
+
+    /* Create the screen surface */
+    SDL_VideoSurface = SDL_CreateRGBSurfaceFromTexture(SDL_VideoTexture);
+    if (!SDL_VideoSurface) {
+        return NULL;
+    }
+    SDL_VideoSurface->flags |= surface_flags;
+
+    /* Set a default screen palette */
+    if (SDL_VideoSurface->format->palette) {
+        SDL_VideoSurface->flags |= SDL_HWPALETTE;
+        SDL_DitherColors(SDL_VideoSurface->format->palette->colors,
+                         SDL_VideoSurface->format->BitsPerPixel);
+        SDL_AddPaletteWatch(SDL_VideoSurface->format->palette,
+                            SDL_VideoPaletteChanged, NULL);
+        SDL_SetPaletteColors(SDL_VideoSurface->format->palette,
+                             SDL_VideoSurface->format->palette->colors, 0,
+                             SDL_VideoSurface->format->palette->ncolors);
+    }
+
+    /* Create a shadow surface if necessary */
+    if (((bpp != SDL_VideoSurface->format->BitsPerPixel)
+         && !(flags & SDL_ANYFORMAT))
+        || ((SDL_VideoSurface->flags & SDL_HWSURFACE)
+            && !(flags & SDL_HWSURFACE))) {
+        if ((bpp == SDL_VideoSurface->format->BitsPerPixel)
+            || (flags & SDL_ANYFORMAT)) {
+            SDL_ShadowSurface =
+                SDL_CreateRGBSurface(0, width, height,
+                                     SDL_VideoSurface->format->BitsPerPixel,
+                                     SDL_VideoSurface->format->Rmask,
+                                     SDL_VideoSurface->format->Gmask,
+                                     SDL_VideoSurface->format->Bmask,
+                                     SDL_VideoSurface->format->Amask);
+        } else {
+            SDL_ShadowSurface =
+                SDL_CreateRGBSurface(0, width, height, bpp, 0, 0, 0, 0);
+        }
+        if (!SDL_ShadowSurface) {
+            return NULL;
+        }
+        SDL_ShadowSurface->flags |= surface_flags;
+
+        /* 8-bit SDL_ShadowSurface surfaces report that they have exclusive palette */
+        if (SDL_ShadowSurface->format->palette) {
+            SDL_ShadowSurface->flags |= SDL_HWPALETTE;
+            if (SDL_VideoSurface->format->palette) {
+                SDL_SetSurfacePalette(SDL_ShadowSurface,
+                                      SDL_VideoSurface->format->palette);
+            } else {
+                SDL_DitherColors(SDL_ShadowSurface->format->palette->colors,
+                                 SDL_ShadowSurface->format->BitsPerPixel);
+            }
+        }
+    }
+    SDL_PublicSurface =
+        (SDL_ShadowSurface ? SDL_ShadowSurface : SDL_VideoSurface);
+
+    /* Clear the surface for display */
+    SDL_FillRect(SDL_PublicSurface, NULL, 0);
+
+    /* We're finally done! */
+    return SDL_PublicSurface;
+}
+
+SDL_Surface *
+SDL_GetVideoSurface(void)
+{
+    return SDL_PublicSurface;
+}
+
+SDL_Surface *
+SDL_DisplayFormat(SDL_Surface * surface)
+{
+    Uint32 flags;
+
+    if (!SDL_PublicSurface) {
+        SDL_SetError("No video mode has been set");
+        return NULL;
+    }
+
+    /* Set the flags appropriate for copying to display surface */
+    flags = SDL_SWSURFACE;
+#ifdef AUTORLE_DISPLAYFORMAT
+    flags |= (surface->flags & (SDL_SRCCOLORKEY | SDL_SRCALPHA));
+    flags |= SDL_RLEACCELOK;
+#else
+    flags |=
+        surface->flags & (SDL_SRCCOLORKEY | SDL_SRCALPHA | SDL_RLEACCELOK);
+#endif
+    return SDL_ConvertSurface(surface, SDL_PublicSurface->format, flags);
+}
+
+SDL_Surface *
+SDL_DisplayFormatAlpha(SDL_Surface * surface)
+{
+    SDL_PixelFormat *vf;
+    SDL_PixelFormat *format;
+    SDL_Surface *converted;
+    Uint32 flags;
+    /* default to ARGB8888 */
+    Uint32 amask = 0xff000000;
+    Uint32 rmask = 0x00ff0000;
+    Uint32 gmask = 0x0000ff00;
+    Uint32 bmask = 0x000000ff;
+
+    if (!SDL_PublicSurface) {
+        SDL_SetError("No video mode has been set");
+        return NULL;
+    }
+    vf = SDL_PublicSurface->format;
+
+    switch (vf->BytesPerPixel) {
+    case 2:
+        /* For XGY5[56]5, use, AXGY8888, where {X, Y} = {R, B}.
+           For anything else (like ARGB4444) it doesn't matter
+           since we have no special code for it anyway */
+        if ((vf->Rmask == 0x1f) &&
+            (vf->Bmask == 0xf800 || vf->Bmask == 0x7c00)) {
+            rmask = 0xff;
+            bmask = 0xff0000;
+        }
+        break;
+
+    case 3:
+    case 4:
+        /* Keep the video format, as long as the high 8 bits are
+           unused or alpha */
+        if ((vf->Rmask == 0xff) && (vf->Bmask == 0xff0000)) {
+            rmask = 0xff;
+            bmask = 0xff0000;
+        }
+        break;
+
+    default:
+        /* We have no other optimised formats right now. When/if a new
+           optimised alpha format is written, add the converter here */
+        break;
+    }
+    format = SDL_AllocFormat(32, rmask, gmask, bmask, amask);
+    flags = SDL_PublicSurface->flags & SDL_HWSURFACE;
+    flags |= surface->flags & (SDL_SRCALPHA | SDL_RLEACCELOK);
+    converted = SDL_ConvertSurface(surface, format, flags);
+    SDL_FreeFormat(format);
+    return converted;
+}
+
+int
+SDL_Flip(SDL_Surface * screen)
+{
+    SDL_UpdateRect(screen, 0, 0, 0, 0);
+    return 0;
+}
+
+void
+SDL_UpdateRect(SDL_Surface * screen, Sint32 x, Sint32 y, Uint32 w, Uint32 h)
+{
+    if (screen) {
+        SDL_Rect rect;
+
+        /* Perform some checking */
+        if (w == 0)
+            w = screen->w;
+        if (h == 0)
+            h = screen->h;
+        if ((int) (x + w) > screen->w)
+            return;
+        if ((int) (y + h) > screen->h)
+            return;
+
+        /* Fill the rectangle */
+        rect.x = (Sint16) x;
+        rect.y = (Sint16) y;
+        rect.w = (Uint16) w;
+        rect.h = (Uint16) h;
+        SDL_UpdateRects(screen, 1, &rect);
+    }
+}
+void
+SDL_UpdateRects(SDL_Surface * screen, int numrects, SDL_Rect * rects)
+{
+    int i;
+
+    if (screen == SDL_ShadowSurface) {
+        for (i = 0; i < numrects; ++i) {
+            SDL_LowerBlit(SDL_ShadowSurface, &rects[i], SDL_VideoSurface,
+                          &rects[i]);
+        }
+
+        /* Fall through to video surface update */
+        screen = SDL_VideoSurface;
+    }
+    if (screen == SDL_VideoSurface) {
+        for (i = 0; i < numrects; ++i) {
+            SDL_RenderCopy(SDL_VideoTexture, &rects[i], &rects[i],
+                           SDL_TextureBlendMode_None,
+                           SDL_TextureScaleMode_None);
+        }
+        SDL_RenderPresent();
+    }
+}
+
+void
+SDL_WM_SetCaption(const char *title, const char *icon)
+{
+    if (wm_title) {
+        SDL_free(wm_title);
+    } else {
+        wm_title = SDL_strdup(title);
+    }
+    SDL_SetWindowTitle(SDL_VideoWindow, wm_title);
+}
+
+void
+SDL_WM_GetCaption(char **title, char **icon)
+{
+    if (title) {
+        *title = wm_title;
+    }
+    if (icon) {
+        *icon = "";
+    }
+}
+
+void
+SDL_WM_SetIcon(SDL_Surface * icon, Uint8 * mask)
+{
+    /* FIXME */
+}
+
+int
+SDL_WM_IconifyWindow(void)
+{
+    SDL_MinimizeWindow(SDL_VideoWindow);
+    return 0;
+}
+
+int
+SDL_WM_ToggleFullScreen(SDL_Surface * surface)
+{
+    if (SDL_GetWindowFlags(SDL_VideoWindow) & SDL_WINDOW_FULLSCREEN) {
+        if (SDL_SetWindowFullscreen(SDL_VideoWindow, 0) < 0) {
+            return 0;
+        }
+        SDL_PublicSurface->flags &= ~SDL_FULLSCREEN;
+    } else {
+        if (SDL_SetWindowFullscreen(SDL_VideoWindow, 1) < 0) {
+            return 0;
+        }
+        SDL_PublicSurface->flags |= SDL_FULLSCREEN;
+    }
+    return 1;
+}
+
+SDL_GrabMode
+SDL_WM_GrabInput(SDL_GrabMode mode)
+{
+    if (mode != SDL_GRAB_QUERY) {
+        SDL_SetWindowGrab(SDL_VideoWindow, mode);
+    }
+    return (SDL_GrabMode) SDL_GetWindowGrab(SDL_VideoWindow);
+}
+
+void
+SDL_WarpMouse(Uint16 x, Uint16 y)
+{
+    SDL_WarpMouseInWindow(SDL_VideoWindow, x, y);
+}
+
+Uint8
+SDL_GetAppState(void)
+{
+    Uint8 state = 0;
+    Uint32 flags = 0;
+
+    flags = SDL_GetWindowFlags(SDL_VideoWindow);
+    if ((flags & SDL_WINDOW_SHOWN) && !(flags & SDL_WINDOW_MINIMIZED)) {
+        state |= SDL_APPACTIVE;
+    }
+    if (flags & SDL_WINDOW_INPUT_FOCUS) {
+        state |= SDL_APPINPUTFOCUS;
+    }
+    if (flags & SDL_WINDOW_MOUSE_FOCUS) {
+        state |= SDL_APPMOUSEFOCUS;
+    }
+    return state;
+}
+
+const SDL_version *
+SDL_Linked_Version(void)
+{
+    static SDL_version version;
+    SDL_VERSION(&version);
+    return &version;
+}
+
+int
+SDL_SetPalette(SDL_Surface * surface, int flags, const SDL_Color * colors,
+               int firstcolor, int ncolors)
+{
+    return SDL_SetColors(surface, colors, firstcolor, ncolors);
+}
+
+int
+SDL_SetColors(SDL_Surface * surface, const SDL_Color * colors, int firstcolor,
+              int ncolors)
+{
+    if (SDL_SetPaletteColors
+        (surface->format->palette, colors, firstcolor, ncolors) == 0) {
+        return 1;
+    } else {
+        return 0;
+    }
+}
+
+int
+SDL_GetWMInfo(SDL_SysWMinfo * info)
+{
+    return SDL_GetWindowWMInfo(SDL_VideoWindow, info);
+}
+
+#if 0
+void
+SDL_MoveCursor(int x, int y)
+{
+    SDL_VideoDevice *_this = SDL_GetVideoDevice();
+
+    /* Erase and update the current mouse position */
+    if (SHOULD_DRAWCURSOR(SDL_cursorstate)) {
+        /* Erase and redraw mouse cursor in new position */
+        SDL_LockCursor();
+        SDL_EraseCursor(SDL_VideoSurface);
+        SDL_cursor->area.x = (x - SDL_cursor->hot_x);
+        SDL_cursor->area.y = (y - SDL_cursor->hot_y);
+        SDL_DrawCursor(SDL_VideoSurface);
+        SDL_UnlockCursor();
+    } else if (_this->MoveWMCursor) {
+        _this->MoveWMCursor(_this, x, y);
+    }
+}
+
+/* Keep track of the current cursor colors */
+static int palette_changed = 1;
+static Uint8 pixels8[2];
+
+void
+SDL_CursorPaletteChanged(void)
+{
+    palette_changed = 1;
+}
+
+void
+SDL_MouseRect(SDL_Rect * area)
+{
+    SDL_VideoDevice *_this = SDL_GetVideoDevice();
+    int clip_diff;
+
+    *area = SDL_cursor->area;
+    if (area->x < 0) {
+        area->w += area->x;
+        area->x = 0;
+    }
+    if (area->y < 0) {
+        area->h += area->y;
+        area->y = 0;
+    }
+    clip_diff = (area->x + area->w) - SDL_VideoSurface->w;
+    if (clip_diff > 0) {
+        area->w = area->w < clip_diff ? 0 : area->w - clip_diff;
+    }
+    clip_diff = (area->y + area->h) - SDL_VideoSurface->h;
+    if (clip_diff > 0) {
+        area->h = area->h < clip_diff ? 0 : area->h - clip_diff;
+    }
+}
+
+static void
+SDL_DrawCursorFast(SDL_Surface * screen, SDL_Rect * area)
+{
+    const Uint32 pixels[2] = { 0xFFFFFFFF, 0x00000000 };
+    int i, w, h;
+    Uint8 *data, datab;
+    Uint8 *mask, maskb;
+
+    data = SDL_cursor->data + area->y * SDL_cursor->area.w / 8;
+    mask = SDL_cursor->mask + area->y * SDL_cursor->area.w / 8;
+    switch (screen->format->BytesPerPixel) {
+
+    case 1:
+        {
+            Uint8 *dst;
+            int dstskip;
+
+            if (palette_changed) {
+                pixels8[0] =
+                    (Uint8) SDL_MapRGB(screen->format, 255, 255, 255);
+                pixels8[1] = (Uint8) SDL_MapRGB(screen->format, 0, 0, 0);
+                palette_changed = 0;
+            }
+            dst = (Uint8 *) screen->pixels +
+                (SDL_cursor->area.y + area->y) * screen->pitch +
+                SDL_cursor->area.x;
+            dstskip = screen->pitch - area->w;
+
+            for (h = area->h; h; h--) {
+                for (w = area->w / 8; w; w--) {
+                    maskb = *mask++;
+                    datab = *data++;
+                    for (i = 0; i < 8; ++i) {
+                        if (maskb & 0x80) {
+                            *dst = pixels8[datab >> 7];
+                        }
+                        maskb <<= 1;
+                        datab <<= 1;
+                        dst++;
+                    }
+                }
+                dst += dstskip;
+            }
+        }
+        break;
+
+    case 2:
+        {
+            Uint16 *dst;
+            int dstskip;
+
+            dst = (Uint16 *) screen->pixels +
+                (SDL_cursor->area.y + area->y) * screen->pitch / 2 +
+                SDL_cursor->area.x;
+            dstskip = (screen->pitch / 2) - area->w;
+
+            for (h = area->h; h; h--) {
+                for (w = area->w / 8; w; w--) {
+                    maskb = *mask++;
+                    datab = *data++;
+                    for (i = 0; i < 8; ++i) {
+                        if (maskb & 0x80) {
+                            *dst = (Uint16) pixels[datab >> 7];
+                        }
+                        maskb <<= 1;
+                        datab <<= 1;
+                        dst++;
+                    }
+                }
+                dst += dstskip;
+            }
+        }
+        break;
+
+    case 3:
+        {
+            Uint8 *dst;
+            int dstskip;
+
+            dst = (Uint8 *) screen->pixels +
+                (SDL_cursor->area.y + area->y) * screen->pitch +
+                SDL_cursor->area.x * 3;
+            dstskip = screen->pitch - area->w * 3;
+
+            for (h = area->h; h; h--) {
+                for (w = area->w / 8; w; w--) {
+                    maskb = *mask++;
+                    datab = *data++;
+                    for (i = 0; i < 8; ++i) {
+                        if (maskb & 0x80) {
+                            SDL_memset(dst, pixels[datab >> 7], 3);
+                        }
+                        maskb <<= 1;
+                        datab <<= 1;
+                        dst += 3;
+                    }
+                }
+                dst += dstskip;
+            }
+        }
+        break;
+
+    case 4:
+        {
+            Uint32 *dst;
+            int dstskip;
+
+            dst = (Uint32 *) screen->pixels +
+                (SDL_cursor->area.y + area->y) * screen->pitch / 4 +
+                SDL_cursor->area.x;
+            dstskip = (screen->pitch / 4) - area->w;
+
+            for (h = area->h; h; h--) {
+                for (w = area->w / 8; w; w--) {
+                    maskb = *mask++;
+                    datab = *data++;
+                    for (i = 0; i < 8; ++i) {
+                        if (maskb & 0x80) {
+                            *dst = pixels[datab >> 7];
+                        }
+                        maskb <<= 1;
+                        datab <<= 1;
+                        dst++;
+                    }
+                }
+                dst += dstskip;
+            }
+        }
+        break;
+    }
+}
+
+static void
+SDL_DrawCursorSlow(SDL_Surface * screen, SDL_Rect * area)
+{
+    const Uint32 pixels[2] = { 0xFFFFFF, 0x000000 };
+    int h;
+    int x, minx, maxx;
+    Uint8 *data, datab = 0;
+    Uint8 *mask, maskb = 0;
+    Uint8 *dst;
+    int dstbpp, dstskip;
+
+    data = SDL_cursor->data + area->y * SDL_cursor->area.w / 8;
+    mask = SDL_cursor->mask + area->y * SDL_cursor->area.w / 8;
+    dstbpp = screen->format->BytesPerPixel;
+    dst = (Uint8 *) screen->pixels +
+        (SDL_cursor->area.y + area->y) * screen->pitch +
+        SDL_cursor->area.x * dstbpp;
+    dstskip = screen->pitch - SDL_cursor->area.w * dstbpp;
+
+    minx = area->x;
+    maxx = area->x + area->w;
+    if (screen->format->BytesPerPixel == 1) {
+        if (palette_changed) {
+            pixels8[0] = (Uint8) SDL_MapRGB(screen->format, 255, 255, 255);
+            pixels8[1] = (Uint8) SDL_MapRGB(screen->format, 0, 0, 0);
+            palette_changed = 0;
+        }
+        for (h = area->h; h; h--) {
+            for (x = 0; x < SDL_cursor->area.w; ++x) {
+                if ((x % 8) == 0) {
+                    maskb = *mask++;
+                    datab = *data++;
+                }
+                if ((x >= minx) && (x < maxx)) {
+                    if (maskb & 0x80) {
+                        SDL_memset(dst, pixels8[datab >> 7], dstbpp);
+                    }
+                }
+                maskb <<= 1;
+                datab <<= 1;
+                dst += dstbpp;
+            }
+            dst += dstskip;
+        }
+    } else {
+        for (h = area->h; h; h--) {
+            for (x = 0; x < SDL_cursor->area.w; ++x) {
+                if ((x % 8) == 0) {
+                    maskb = *mask++;
+                    datab = *data++;
+                }
+                if ((x >= minx) && (x < maxx)) {
+                    if (maskb & 0x80) {
+                        SDL_memset(dst, pixels[datab >> 7], dstbpp);
+                    }
+                }
+                maskb <<= 1;
+                datab <<= 1;
+                dst += dstbpp;
+            }
+            dst += dstskip;
+        }
+    }
+}
+
+/* This handles the ugly work of converting the saved cursor background from
+   the pixel format of the shadow surface to that of the video surface.
+   This is only necessary when blitting from a shadow surface of a different
+   pixel format than the video surface, and using a software rendered cursor.
+*/
+static void
+SDL_ConvertCursorSave(SDL_Surface * screen, int w, int h)
+{
+    SDL_VideoDevice *_this = SDL_GetVideoDevice();
+    SDL_BlitInfo info;
+    SDL_loblit RunBlit;
+
+    /* Make sure we can steal the blit mapping */
+    if (screen->map->dst != SDL_VideoSurface) {
+        return;
+    }
+
+    /* Set up the blit information */
+    info.s_pixels = SDL_cursor->save[1];
+    info.s_width = w;
+    info.s_height = h;
+    info.s_skip = 0;
+    info.d_pixels = SDL_cursor->save[0];
+    info.d_width = w;
+    info.d_height = h;
+    info.d_skip = 0;
+    info.aux_data = screen->map->sw_data->aux_data;
+    info.src = screen->format;
+    info.table = screen->map->table;
+    info.dst = SDL_VideoSurface->format;
+    RunBlit = screen->map->sw_data->blit;
+
+    /* Run the actual software blit */
+    RunBlit(&info);
+}
+
+void
+SDL_DrawCursorNoLock(SDL_Surface * screen)
+{
+    SDL_VideoDevice *_this = SDL_GetVideoDevice();
+    SDL_Rect area;
+
+    /* Get the mouse rectangle, clipped to the screen */
+    SDL_MouseRect(&area);
+    if ((area.w == 0) || (area.h == 0)) {
+        return;
+    }
+
+    /* Copy mouse background */
+    {
+        int w, h, screenbpp;
+        Uint8 *src, *dst;
+
+        /* Set up the copy pointers */
+        screenbpp = screen->format->BytesPerPixel;
+        if ((screen == SDL_VideoSurface) ||
+            FORMAT_EQUAL(screen->format, SDL_VideoSurface->format)) {
+            dst = SDL_cursor->save[0];
+        } else {
+            dst = SDL_cursor->save[1];
+        }
+        src = (Uint8 *) screen->pixels + area.y * screen->pitch +
+            area.x * screenbpp;
+
+        /* Perform the copy */
+        w = area.w * screenbpp;
+        h = area.h;
+        while (h--) {
+            SDL_memcpy(dst, src, w);
+            dst += w;
+            src += screen->pitch;
+        }
+    }
+
+    /* Draw the mouse cursor */
+    area.x -= SDL_cursor->area.x;
+    area.y -= SDL_cursor->area.y;
+    if ((area.x == 0) && (area.w == SDL_cursor->area.w)) {
+        SDL_DrawCursorFast(screen, &area);
+    } else {
+        SDL_DrawCursorSlow(screen, &area);
+    }
+}
+
+void
+SDL_DrawCursor(SDL_Surface * screen)
+{
+    /* Lock the screen if necessary */
+    if (screen == NULL) {
+        return;
+    }
+    if (SDL_MUSTLOCK(screen)) {
+        if (SDL_LockSurface(screen) < 0) {
+            return;
+        }
+    }
+
+    SDL_DrawCursorNoLock(screen);
+
+    /* Unlock the screen and update if necessary */
+    if (SDL_MUSTLOCK(screen)) {
+        SDL_UnlockSurface(screen);
+    }
+    if ((screen->flags & SDL_SCREEN_SURFACE) &&
+        !(screen->flags & SDL_HWSURFACE)) {
+        SDL_VideoDevice *_this = SDL_GetVideoDevice();
+        SDL_Window *window;
+        SDL_Rect area;
+
+        window = SDL_GetWindowFromSurface(screen);
+        if (!window) {
+            return;
+        }
+
+        SDL_MouseRect(&area);
+
+        if (_this->UpdateWindowSurface) {
+            _this->UpdateWindowSurface(_this, window, 1, &area);
+        }
+    }
+}
+
+void
+SDL_EraseCursorNoLock(SDL_Surface * screen)
+{
+    SDL_VideoDevice *_this = SDL_GetVideoDevice();
+    SDL_Window *window;
+    SDL_Rect area;
+
+    /* Get the window associated with the surface */
+    window = SDL_GetWindowFromSurface(screen);
+    if (!window || !window->surface) {
+        return;
+    }
+
+    /* Get the mouse rectangle, clipped to the screen */
+    SDL_MouseRect(&area);
+    if ((area.w == 0) || (area.h == 0)) {
+        return;
+    }
+
+    /* Copy mouse background */
+    {
+        int w, h, screenbpp;
+        Uint8 *src, *dst;
+
+        /* Set up the copy pointers */
+        screenbpp = screen->format->BytesPerPixel;
+        if ((screen->flags & SDL_SCREEN_SURFACE) ||
+            FORMAT_EQUAL(screen->format, window->surface->format)) {
+            src = SDL_cursor->save[0];
+        } else {
+            src = SDL_cursor->save[1];
+        }
+        dst = (Uint8 *) screen->pixels + area.y * screen->pitch +
+            area.x * screenbpp;
+
+        /* Perform the copy */
+        w = area.w * screenbpp;
+        h = area.h;
+        while (h--) {
+            SDL_memcpy(dst, src, w);
+            src += w;
+            dst += screen->pitch;
+        }
+
+        /* Perform pixel conversion on cursor background */
+        if (src > SDL_cursor->save[1]) {
+            SDL_ConvertCursorSave(screen, area.w, area.h);
+        }
+    }
+}
+
+void
+SDL_EraseCursor(SDL_Surface * screen)
+{
+    /* Lock the screen if necessary */
+    if (screen == NULL) {
+        return;
+    }
+    if (SDL_MUSTLOCK(screen)) {
+        if (SDL_LockSurface(screen) < 0) {
+            return;
+        }
+    }
+
+    SDL_EraseCursorNoLock(screen);
+
+    /* Unlock the screen and update if necessary */
+    if (SDL_MUSTLOCK(screen)) {
+        SDL_UnlockSurface(screen);
+    }
+    if ((screen->flags & SDL_SCREEN_SURFACE) &&
+        !(screen->flags & SDL_HWSURFACE)) {
+        SDL_VideoDevice *_this = SDL_GetVideoDevice();
+        SDL_Window *window;
+        SDL_Rect area;
+
+        window = SDL_GetWindowFromSurface(screen);
+        if (!window) {
+            return;
+        }
+
+        SDL_MouseRect(&area);
+
+        if (_this->UpdateWindowSurface) {
+            _this->UpdateWindowSurface(_this, window, 1, &area);
+        }
+    }
+}
+
+/* Reset the cursor on video mode change
+   FIXME:  Keep track of all cursors, and reset them all.
+ */
+void
+SDL_ResetCursor(void)
+{
+    int savelen;
+
+    if (SDL_cursor) {
+        savelen = SDL_cursor->area.w * 4 * SDL_cursor->area.h;
+        SDL_cursor->area.x = 0;
+        SDL_cursor->area.y = 0;
+        SDL_memset(SDL_cursor->save[0], 0, savelen);
+    }
+}
+#endif
+
+struct private_yuvhwdata
+{
+    Uint16 pitches[3];
+    Uint8 *planes[3];
+
+    SDL_TextureID textureID;
+};
+
+SDL_Overlay *
+SDL_CreateYUVOverlay(int w, int h, Uint32 format, SDL_Surface * display)
+{
+    SDL_Overlay *overlay;
+    Uint32 texture_format;
+
+    if ((display->flags & SDL_OPENGL) == SDL_OPENGL) {
+        SDL_SetError("YUV overlays are not supported in OpenGL mode");
+        return NULL;
+    }
+
+    if (display != SDL_PublicSurface) {
+        SDL_SetError("YUV display is only supported on the screen surface");
+        return NULL;
+    }
+
+    switch (format) {
+    case SDL_YV12_OVERLAY:
+        texture_format = SDL_PixelFormat_YV12;
+        break;
+    case SDL_IYUV_OVERLAY:
+        texture_format = SDL_PixelFormat_IYUV;
+        break;
+    case SDL_YUY2_OVERLAY:
+        texture_format = SDL_PixelFormat_YUY2;
+        break;
+    case SDL_UYVY_OVERLAY:
+        texture_format = SDL_PixelFormat_UYVY;
+        break;
+    case SDL_YVYU_OVERLAY:
+        texture_format = SDL_PixelFormat_YVYU;
+        break;
+    default:
+        SDL_SetError("Unknown YUV format");
+        return NULL;
+    }
+
+    overlay = (SDL_Overlay *) SDL_malloc(sizeof(*overlay));
+    if (!overlay) {
+        SDL_OutOfMemory();
+        return NULL;
+    }
+    SDL_zerop(overlay);
+
+    overlay->hwdata =
+        (struct private_yuvhwdata *) SDL_malloc(sizeof(*overlay->hwdata));
+    if (!overlay->hwdata) {
+        SDL_free(overlay);
+        SDL_OutOfMemory();
+        return NULL;
+    }
+
+    overlay->format = format;
+    overlay->w = w;
+    overlay->h = h;
+    if (format == SDL_YV12_OVERLAY || format == SDL_IYUV_OVERLAY) {
+        overlay->planes = 3;
+    } else {
+        overlay->planes = 1;
+    }
+    overlay->pitches = overlay->hwdata->pitches;
+    overlay->pixels = overlay->hwdata->planes;
+
+    switch (format) {
+    case SDL_YV12_OVERLAY:
+    case SDL_IYUV_OVERLAY:
+        overlay->pitches[0] = overlay->w;
+        overlay->pitches[1] = overlay->w / 2;
+        overlay->pitches[2] = overlay->w / 2;
+        break;
+    case SDL_YUY2_OVERLAY:
+    case SDL_UYVY_OVERLAY:
+    case SDL_YVYU_OVERLAY:
+        overlay->pitches[0] = overlay->w * 2;
+        break;
+    }
+
+    overlay->hwdata->textureID =
+        SDL_CreateTexture(texture_format, SDL_TextureAccess_Local, w, h);
+    if (!overlay->hwdata->textureID) {
+        SDL_FreeYUVOverlay(overlay);
+        return NULL;
+    }
+
+    return overlay;
+}
+
+int
+SDL_LockYUVOverlay(SDL_Overlay * overlay)
+{
+    void *pixels;
+    int pitch;
+    if (SDL_LockTexture(overlay->hwdata->textureID, NULL, 1, &pixels, &pitch)
+        < 0) {
+        return -1;
+    }
+    switch (overlay->format) {
+    case SDL_YV12_OVERLAY:
+    case SDL_IYUV_OVERLAY:
+        overlay->pixels[0] = (Uint8 *) pixels;
+        overlay->pixels[1] =
+            overlay->pixels[0] + overlay->pitches[0] * overlay->h;
+        overlay->pixels[2] =
+            overlay->pixels[1] + overlay->pitches[1] * overlay->h;
+        break;
+    case SDL_YUY2_OVERLAY:
+    case SDL_UYVY_OVERLAY:
+    case SDL_YVYU_OVERLAY:
+        overlay->pixels[0] = (Uint8 *) pixels;
+        break;
+    }
+    return 0;
+}
+
+void
+SDL_UnlockYUVOverlay(SDL_Overlay * overlay)
+{
+    SDL_UnlockTexture(overlay->hwdata->textureID);
+}
+
+int
+SDL_DisplayYUVOverlay(SDL_Overlay * overlay, SDL_Rect * dstrect)
+{
+    if (SDL_RenderCopy(overlay->hwdata->textureID, NULL, dstrect,
+                       SDL_TextureBlendMode_None,
+                       SDL_TextureScaleMode_Fast) < 0) {
+        return -1;
+    }
+    SDL_RenderPresent();
+    return 0;
+}
+
+void
+SDL_FreeYUVOverlay(SDL_Overlay * overlay)
+{
+    if (overlay) {
+        if (overlay->hwdata) {
+            if (overlay->hwdata->textureID) {
+                SDL_DestroyTexture(overlay->hwdata->textureID);
+            }
+            SDL_free(overlay->hwdata);
+        }
+        SDL_free(overlay);
+    }
+}
+
+/* vi: set ts=4 sw=4 expandtab: */