src/SDL_compat.c
author Sam Lantinga <slouken@libsdl.org>
Mon, 10 Jul 2006 21:04:37 +0000
changeset 1895 c121d94672cb
child 1897 c2a27da60b18
permissions -rw-r--r--
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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/*
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    SDL - Simple DirectMedia Layer
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    Copyright (C) 1997-2006 Sam Lantinga
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    This library is free software; you can redistribute it and/or
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    modify it under the terms of the GNU Lesser General Public
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    License as published by the Free Software Foundation; either
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    version 2.1 of the License, or (at your option) any later version.
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    This library is distributed in the hope that it will be useful,
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    but WITHOUT ANY WARRANTY; without even the implied warranty of
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    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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    Lesser General Public License for more details.
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    You should have received a copy of the GNU Lesser General Public
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    License along with this library; if not, write to the Free Software
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    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
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    Sam Lantinga
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    slouken@libsdl.org
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*/
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#include "SDL_config.h"
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/* This file contains functions for backwards compatibility with SDL 1.2 */
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#include "SDL.h"
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#include "SDL_syswm.h"
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#include "video/SDL_sysvideo.h"
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#include "video/SDL_pixels_c.h"
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static SDL_WindowID SDL_VideoWindow;
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static SDL_TextureID SDL_VideoTexture;
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static SDL_Surface *SDL_VideoSurface;
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static SDL_Surface *SDL_ShadowSurface;
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static SDL_Surface *SDL_PublicSurface;
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static char *wm_title;
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char *
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SDL_AudioDriverName(char *namebuf, int maxlen)
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{
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    const char *name = SDL_GetCurrentAudioDriver();
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    if (name) {
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        SDL_strlcpy(namebuf, name, maxlen);
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        return namebuf;
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    }
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    return NULL;
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}
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char *
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SDL_VideoDriverName(char *namebuf, int maxlen)
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{
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    const char *name = SDL_GetCurrentVideoDriver();
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    if (name) {
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        SDL_strlcpy(namebuf, name, maxlen);
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        return namebuf;
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    }
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    return NULL;
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}
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const SDL_VideoInfo *
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SDL_GetVideoInfo(void)
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{
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    static SDL_VideoInfo info;
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    /* Memory leak, compatibility code, who cares? */
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    if (!info.vfmt && SDL_GetDesktopDisplayMode()) {
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        int bpp;
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        Uint32 Rmask, Gmask, Bmask, Amask;
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        SDL_PixelFormatEnumToMasks(SDL_GetDesktopDisplayMode()->format, &bpp,
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                                   &Rmask, &Gmask, &Bmask, &Amask);
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        info.vfmt = SDL_AllocFormat(bpp, Rmask, Gmask, Bmask, Amask);
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    }
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    return &info;
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}
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int
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SDL_VideoModeOK(int width, int height, int bpp, Uint32 flags)
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{
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    int i, actual_bpp = 0;
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    if (!SDL_GetVideoDevice()) {
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        return 0;
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    }
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    if (!(flags & SDL_FULLSCREEN)) {
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        return SDL_BITSPERPIXEL(SDL_GetDesktopDisplayMode()->format);
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    }
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    for (i = 0; i < SDL_GetNumDisplayModes(); ++i) {
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        const SDL_DisplayMode *mode = SDL_GetDisplayMode(i);
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        if (!mode->w || !mode->h || (width == mode->w && height == mode->h)) {
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            if (!mode->format) {
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                return bpp;
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            }
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            if (SDL_BITSPERPIXEL(mode->format) >= (Uint32) bpp) {
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                actual_bpp = SDL_BITSPERPIXEL(mode->format);
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            }
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        }
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    }
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    return actual_bpp;
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}
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SDL_Rect **
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SDL_ListModes(SDL_PixelFormat * format, Uint32 flags)
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{
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    int i, nmodes;
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    SDL_Rect **modes;
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    if (!SDL_GetVideoDevice()) {
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        return NULL;
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    }
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    if (!(flags & SDL_FULLSCREEN)) {
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        return (SDL_Rect **) (-1);
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    }
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    /* Memory leak, but this is a compatibility function, who cares? */
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    nmodes = 0;
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    modes = NULL;
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    for (i = 0; i < SDL_GetNumDisplayModes(); ++i) {
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        const SDL_DisplayMode *mode = SDL_GetDisplayMode(i);
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        if (!mode->w || !mode->h) {
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            return (SDL_Rect **) (-1);
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        }
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        if (SDL_BITSPERPIXEL(mode->format) != format->BitsPerPixel) {
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            continue;
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        }
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        if (nmodes > 0 && modes[nmodes - 1]->w == mode->w
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            && modes[nmodes - 1]->h == mode->h) {
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            continue;
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        }
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        modes = SDL_realloc(modes, (nmodes + 2) * sizeof(*modes));
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        if (!modes) {
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            return NULL;
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        }
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        modes[nmodes] = (SDL_Rect *) SDL_malloc(sizeof(SDL_Rect));
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        if (!modes[nmodes]) {
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            return NULL;
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        }
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        modes[nmodes]->x = 0;
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        modes[nmodes]->y = 0;
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        modes[nmodes]->w = mode->w;
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        modes[nmodes]->h = mode->h;
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        ++nmodes;
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    }
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    if (modes) {
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        modes[nmodes] = NULL;
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    }
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    return modes;
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}
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static int
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SDL_CompatEventFilter(void *userdata, SDL_Event * event)
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{
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    SDL_Event fake;
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    switch (event->type) {
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    case SDL_WINDOWEVENT:
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        switch (event->window.event) {
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        case SDL_WINDOWEVENT_EXPOSED:
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            if (!SDL_HasEvent(SDL_VIDEOEXPOSEMASK)) {
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                fake.type = SDL_VIDEOEXPOSE;
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                SDL_PushEvent(&fake);
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            }
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            break;
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        case SDL_WINDOWEVENT_RESIZED:
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            fake.type = SDL_VIDEORESIZE;
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            fake.resize.w = event->window.data1;
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            fake.resize.h = event->window.data2;
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            SDL_PushEvent(&fake);
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            break;
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        case SDL_WINDOWEVENT_MINIMIZED:
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            fake.type = SDL_ACTIVEEVENT;
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            fake.active.gain = 0;
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            fake.active.state = SDL_APPACTIVE;
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            SDL_PushEvent(&fake);
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            break;
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        case SDL_WINDOWEVENT_RESTORED:
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            fake.type = SDL_ACTIVEEVENT;
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            fake.active.gain = 1;
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            fake.active.state = SDL_APPACTIVE;
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            SDL_PushEvent(&fake);
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            break;
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        case SDL_WINDOWEVENT_ENTER:
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            fake.type = SDL_ACTIVEEVENT;
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            fake.active.gain = 1;
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            fake.active.state = SDL_APPMOUSEFOCUS;
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            SDL_PushEvent(&fake);
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            break;
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        case SDL_WINDOWEVENT_LEAVE:
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            fake.type = SDL_ACTIVEEVENT;
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            fake.active.gain = 0;
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            fake.active.state = SDL_APPMOUSEFOCUS;
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            SDL_PushEvent(&fake);
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            break;
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        case SDL_WINDOWEVENT_FOCUS_GAINED:
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            fake.type = SDL_ACTIVEEVENT;
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            fake.active.gain = 1;
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            fake.active.state = SDL_APPINPUTFOCUS;
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            SDL_PushEvent(&fake);
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            break;
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        case SDL_WINDOWEVENT_FOCUS_LOST:
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            fake.type = SDL_ACTIVEEVENT;
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            fake.active.gain = 1;
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            fake.active.state = SDL_APPINPUTFOCUS;
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            SDL_PushEvent(&fake);
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            break;
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        case SDL_WINDOWEVENT_CLOSE:
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            fake.type = SDL_QUIT;
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            SDL_PushEvent(&fake);
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            break;
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        }
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    case SDL_KEYDOWN:
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    case SDL_KEYUP:
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        {
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            Uint32 unicode = 0;
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            if (event->key.type == SDL_KEYDOWN && event->key.keysym.sym < 256) {
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                unicode = event->key.keysym.sym;
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                if (unicode >= 'a' && unicode <= 'z') {
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                    int shifted = !!(event->key.keysym.mod & KMOD_SHIFT);
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                    int capslock = !!(event->key.keysym.mod & KMOD_CAPS);
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                    if ((shifted ^ capslock) != 0) {
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                        unicode = SDL_toupper(unicode);
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                    }
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                }
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            }
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            if (unicode) {
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                event->key.keysym.unicode = unicode;
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            }
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            break;
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        }
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    case SDL_MOUSEWHEEL:
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        {
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            Uint8 button;
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            int selected;
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            int x, y;
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            selected = SDL_SelectMouse(event->wheel.which);
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            SDL_GetMouseState(&x, &y);
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            SDL_SelectMouse(selected);
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            if (event->wheel.motion > 0) {
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                button = SDL_BUTTON_WHEELUP;
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            } else {
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                button = SDL_BUTTON_WHEELDOWN;
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            }
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            fake.button.which = event->wheel.windowID;
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            fake.button.button = button;
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            fake.button.x = x;
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            fake.button.y = y;
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            fake.button.windowID = event->wheel.windowID;
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            fake.type = SDL_MOUSEBUTTONDOWN;
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            fake.button.state = SDL_PRESSED;
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            SDL_PushEvent(&fake);
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            fake.type = SDL_MOUSEBUTTONUP;
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            fake.button.state = SDL_RELEASED;
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            SDL_PushEvent(&fake);
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            break;
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        }
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    }
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    return 1;
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}
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static int
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SDL_VideoPaletteChanged(void *userdata, SDL_Palette * palette)
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{
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    if (userdata == SDL_ShadowSurface) {
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        /* If the shadow palette changed, make the changes visible */
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        if (!SDL_VideoSurface->format->palette) {
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            SDL_UpdateRect(SDL_ShadowSurface, 0, 0, 0, 0);
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        }
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    }
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    if (userdata == SDL_VideoSurface) {
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        return SDL_SetDisplayPalette(palette->colors, 0, palette->ncolors);
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    }
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    return 0;
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}
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static void
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GetEnvironmentWindowPosition(int w, int h, int *x, int *y)
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{
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    const char *window = SDL_getenv("SDL_VIDEO_WINDOW_POS");
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    const char *center = SDL_getenv("SDL_VIDEO_CENTERED");
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    if (window) {
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        if (SDL_sscanf(window, "%d,%d", x, y) == 2) {
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            return;
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        }
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        if (SDL_strcmp(window, "center") == 0) {
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            center = window;
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        }
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    }
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    if (center) {
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        const SDL_DisplayMode *current = SDL_GetDesktopDisplayMode();
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        *x = (current->w - w) / 2;
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        *y = (current->h - h) / 2;
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    }
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}
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SDL_Surface *
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SDL_SetVideoMode(int width, int height, int bpp, Uint32 flags)
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{
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    const SDL_DisplayMode *desktop_mode;
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    SDL_DisplayMode mode;
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    int window_x = SDL_WINDOWPOS_UNDEFINED;
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    int window_y = SDL_WINDOWPOS_UNDEFINED;
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    Uint32 window_flags;
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    Uint32 desktop_format;
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    Uint32 desired_format;
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    Uint32 surface_flags;
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    if (!SDL_GetVideoDevice()) {
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        if (SDL_Init(SDL_INIT_VIDEO | SDL_INIT_NOPARACHUTE) < 0) {
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            return NULL;
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        }
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    }
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    /* Destroy existing window */
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    SDL_PublicSurface = NULL;
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    if (SDL_ShadowSurface) {
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        SDL_FreeSurface(SDL_ShadowSurface);
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        SDL_ShadowSurface = NULL;
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    }
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    if (SDL_VideoSurface) {
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        SDL_DelPaletteWatch(SDL_VideoSurface->format->palette,
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                            SDL_VideoPaletteChanged, NULL);
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        SDL_FreeSurface(SDL_VideoSurface);
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        SDL_VideoSurface = NULL;
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    }
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    if (SDL_VideoWindow) {
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        SDL_GetWindowPosition(SDL_VideoWindow, &window_x, &window_y);
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    }
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    SDL_DestroyWindow(SDL_VideoWindow);
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    /* Set up the event filter */
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    if (!SDL_GetEventFilter(NULL, NULL)) {
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        SDL_SetEventFilter(SDL_CompatEventFilter, NULL);
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    }
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    /* Create a new window */
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    window_flags = SDL_WINDOW_SHOWN;
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    if (flags & SDL_FULLSCREEN) {
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        window_flags |= SDL_WINDOW_FULLSCREEN;
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    }
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    if (flags & SDL_OPENGL) {
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        window_flags |= SDL_WINDOW_OPENGL;
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    }
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    if (flags & SDL_RESIZABLE) {
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        window_flags |= SDL_WINDOW_RESIZABLE;
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    }
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    if (flags & SDL_NOFRAME) {
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        window_flags |= SDL_WINDOW_BORDERLESS;
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    }
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    GetEnvironmentWindowPosition(width, height, &window_x, &window_y);
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    SDL_SetFullscreenDisplayMode(NULL);
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    SDL_VideoWindow =
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        SDL_CreateWindow(wm_title, window_x, window_y, width, height,
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                         window_flags);
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    if (!SDL_VideoWindow) {
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   367
        return NULL;
slouken@1895
   368
    }
slouken@1895
   369
slouken@1895
   370
    window_flags = SDL_GetWindowFlags(SDL_VideoWindow);
slouken@1895
   371
    surface_flags = 0;
slouken@1895
   372
    if (window_flags & SDL_WINDOW_FULLSCREEN) {
slouken@1895
   373
        surface_flags |= SDL_FULLSCREEN;
slouken@1895
   374
    }
slouken@1895
   375
    if (window_flags & SDL_WINDOW_OPENGL) {
slouken@1895
   376
        surface_flags |= SDL_OPENGL;
slouken@1895
   377
    }
slouken@1895
   378
    if (window_flags & SDL_WINDOW_RESIZABLE) {
slouken@1895
   379
        surface_flags |= SDL_RESIZABLE;
slouken@1895
   380
    }
slouken@1895
   381
    if (window_flags & SDL_WINDOW_BORDERLESS) {
slouken@1895
   382
        surface_flags |= SDL_NOFRAME;
slouken@1895
   383
    }
slouken@1895
   384
slouken@1895
   385
    /* Set up the desired display mode */
slouken@1895
   386
    desktop_mode = SDL_GetDesktopDisplayMode();
slouken@1895
   387
    desktop_format = desktop_mode->format;
slouken@1895
   388
    if (desktop_format && ((flags & SDL_ANYFORMAT)
slouken@1895
   389
                           || (bpp == SDL_BITSPERPIXEL(desktop_format)))) {
slouken@1895
   390
        desired_format = desktop_format;
slouken@1895
   391
    } else {
slouken@1895
   392
        switch (bpp) {
slouken@1895
   393
        case 0:
slouken@1895
   394
            if (desktop_format) {
slouken@1895
   395
                desired_format = desktop_format;
slouken@1895
   396
            } else {
slouken@1895
   397
                desired_format = SDL_PixelFormat_RGB888;
slouken@1895
   398
            }
slouken@1895
   399
            break;
slouken@1895
   400
        case 8:
slouken@1895
   401
            desired_format = SDL_PixelFormat_Index8;
slouken@1895
   402
            break;
slouken@1895
   403
        case 15:
slouken@1895
   404
            desired_format = SDL_PixelFormat_RGB555;
slouken@1895
   405
            break;
slouken@1895
   406
        case 16:
slouken@1895
   407
            desired_format = SDL_PixelFormat_RGB565;
slouken@1895
   408
            break;
slouken@1895
   409
        case 24:
slouken@1895
   410
            desired_format = SDL_PixelFormat_RGB24;
slouken@1895
   411
            break;
slouken@1895
   412
        case 32:
slouken@1895
   413
            desired_format = SDL_PixelFormat_RGB888;
slouken@1895
   414
            break;
slouken@1895
   415
        default:
slouken@1895
   416
            SDL_SetError("Unsupported bpp in SDL_SetVideoMode()");
slouken@1895
   417
            return NULL;
slouken@1895
   418
        }
slouken@1895
   419
    }
slouken@1895
   420
    mode.format = desired_format;
slouken@1895
   421
    mode.w = width;
slouken@1895
   422
    mode.h = height;
slouken@1895
   423
    mode.refresh_rate = 0;
slouken@1895
   424
slouken@1895
   425
    /* Set the desired display mode */
slouken@1895
   426
    if (flags & SDL_FULLSCREEN) {
slouken@1895
   427
        if (SDL_SetFullscreenDisplayMode(&mode) < 0) {
slouken@1895
   428
            return NULL;
slouken@1895
   429
        }
slouken@1895
   430
    }
slouken@1895
   431
slouken@1895
   432
    /* If we're in OpenGL mode, just create a stub surface and we're done! */
slouken@1895
   433
    if (flags & SDL_OPENGL) {
slouken@1895
   434
        SDL_VideoSurface =
slouken@1895
   435
            SDL_CreateRGBSurfaceFrom(NULL, width, height, bpp, 0, 0, 0, 0, 0);
slouken@1895
   436
        if (!SDL_VideoSurface) {
slouken@1895
   437
            return NULL;
slouken@1895
   438
        }
slouken@1895
   439
        SDL_VideoSurface->flags |= surface_flags;
slouken@1895
   440
        SDL_PublicSurface = SDL_VideoSurface;
slouken@1895
   441
        return SDL_PublicSurface;
slouken@1895
   442
    }
slouken@1895
   443
slouken@1895
   444
    /* Create a renderer for the window */
slouken@1895
   445
    if (SDL_CreateRenderer(SDL_VideoWindow, -1, 0) < 0) {
slouken@1895
   446
        return NULL;
slouken@1895
   447
    }
slouken@1895
   448
slouken@1895
   449
    /* Create a texture for the screen surface */
slouken@1895
   450
    SDL_VideoTexture =
slouken@1895
   451
        SDL_CreateTexture(desired_format, SDL_TextureAccess_Local, width,
slouken@1895
   452
                          height);
slouken@1895
   453
    if (!SDL_VideoTexture) {
slouken@1895
   454
        SDL_VideoTexture =
slouken@1895
   455
            SDL_CreateTexture(0, SDL_TextureAccess_Local, width, height);
slouken@1895
   456
    }
slouken@1895
   457
    if (!SDL_VideoTexture) {
slouken@1895
   458
        return NULL;
slouken@1895
   459
    }
slouken@1895
   460
slouken@1895
   461
    /* Create the screen surface */
slouken@1895
   462
    SDL_VideoSurface = SDL_CreateRGBSurfaceFromTexture(SDL_VideoTexture);
slouken@1895
   463
    if (!SDL_VideoSurface) {
slouken@1895
   464
        return NULL;
slouken@1895
   465
    }
slouken@1895
   466
    SDL_VideoSurface->flags |= surface_flags;
slouken@1895
   467
slouken@1895
   468
    /* Set a default screen palette */
slouken@1895
   469
    if (SDL_VideoSurface->format->palette) {
slouken@1895
   470
        SDL_VideoSurface->flags |= SDL_HWPALETTE;
slouken@1895
   471
        SDL_DitherColors(SDL_VideoSurface->format->palette->colors,
slouken@1895
   472
                         SDL_VideoSurface->format->BitsPerPixel);
slouken@1895
   473
        SDL_AddPaletteWatch(SDL_VideoSurface->format->palette,
slouken@1895
   474
                            SDL_VideoPaletteChanged, NULL);
slouken@1895
   475
        SDL_SetPaletteColors(SDL_VideoSurface->format->palette,
slouken@1895
   476
                             SDL_VideoSurface->format->palette->colors, 0,
slouken@1895
   477
                             SDL_VideoSurface->format->palette->ncolors);
slouken@1895
   478
    }
slouken@1895
   479
slouken@1895
   480
    /* Create a shadow surface if necessary */
slouken@1895
   481
    if (((bpp != SDL_VideoSurface->format->BitsPerPixel)
slouken@1895
   482
         && !(flags & SDL_ANYFORMAT))
slouken@1895
   483
        || ((SDL_VideoSurface->flags & SDL_HWSURFACE)
slouken@1895
   484
            && !(flags & SDL_HWSURFACE))) {
slouken@1895
   485
        if ((bpp == SDL_VideoSurface->format->BitsPerPixel)
slouken@1895
   486
            || (flags & SDL_ANYFORMAT)) {
slouken@1895
   487
            SDL_ShadowSurface =
slouken@1895
   488
                SDL_CreateRGBSurface(0, width, height,
slouken@1895
   489
                                     SDL_VideoSurface->format->BitsPerPixel,
slouken@1895
   490
                                     SDL_VideoSurface->format->Rmask,
slouken@1895
   491
                                     SDL_VideoSurface->format->Gmask,
slouken@1895
   492
                                     SDL_VideoSurface->format->Bmask,
slouken@1895
   493
                                     SDL_VideoSurface->format->Amask);
slouken@1895
   494
        } else {
slouken@1895
   495
            SDL_ShadowSurface =
slouken@1895
   496
                SDL_CreateRGBSurface(0, width, height, bpp, 0, 0, 0, 0);
slouken@1895
   497
        }
slouken@1895
   498
        if (!SDL_ShadowSurface) {
slouken@1895
   499
            return NULL;
slouken@1895
   500
        }
slouken@1895
   501
        SDL_ShadowSurface->flags |= surface_flags;
slouken@1895
   502
slouken@1895
   503
        /* 8-bit SDL_ShadowSurface surfaces report that they have exclusive palette */
slouken@1895
   504
        if (SDL_ShadowSurface->format->palette) {
slouken@1895
   505
            SDL_ShadowSurface->flags |= SDL_HWPALETTE;
slouken@1895
   506
            if (SDL_VideoSurface->format->palette) {
slouken@1895
   507
                SDL_SetSurfacePalette(SDL_ShadowSurface,
slouken@1895
   508
                                      SDL_VideoSurface->format->palette);
slouken@1895
   509
            } else {
slouken@1895
   510
                SDL_DitherColors(SDL_ShadowSurface->format->palette->colors,
slouken@1895
   511
                                 SDL_ShadowSurface->format->BitsPerPixel);
slouken@1895
   512
            }
slouken@1895
   513
        }
slouken@1895
   514
    }
slouken@1895
   515
    SDL_PublicSurface =
slouken@1895
   516
        (SDL_ShadowSurface ? SDL_ShadowSurface : SDL_VideoSurface);
slouken@1895
   517
slouken@1895
   518
    /* Clear the surface for display */
slouken@1895
   519
    SDL_FillRect(SDL_PublicSurface, NULL, 0);
slouken@1895
   520
slouken@1895
   521
    /* We're finally done! */
slouken@1895
   522
    return SDL_PublicSurface;
slouken@1895
   523
}
slouken@1895
   524
slouken@1895
   525
SDL_Surface *
slouken@1895
   526
SDL_GetVideoSurface(void)
slouken@1895
   527
{
slouken@1895
   528
    return SDL_PublicSurface;
slouken@1895
   529
}
slouken@1895
   530
slouken@1895
   531
SDL_Surface *
slouken@1895
   532
SDL_DisplayFormat(SDL_Surface * surface)
slouken@1895
   533
{
slouken@1895
   534
    Uint32 flags;
slouken@1895
   535
slouken@1895
   536
    if (!SDL_PublicSurface) {
slouken@1895
   537
        SDL_SetError("No video mode has been set");
slouken@1895
   538
        return NULL;
slouken@1895
   539
    }
slouken@1895
   540
slouken@1895
   541
    /* Set the flags appropriate for copying to display surface */
slouken@1895
   542
    flags = SDL_SWSURFACE;
slouken@1895
   543
#ifdef AUTORLE_DISPLAYFORMAT
slouken@1895
   544
    flags |= (surface->flags & (SDL_SRCCOLORKEY | SDL_SRCALPHA));
slouken@1895
   545
    flags |= SDL_RLEACCELOK;
slouken@1895
   546
#else
slouken@1895
   547
    flags |=
slouken@1895
   548
        surface->flags & (SDL_SRCCOLORKEY | SDL_SRCALPHA | SDL_RLEACCELOK);
slouken@1895
   549
#endif
slouken@1895
   550
    return SDL_ConvertSurface(surface, SDL_PublicSurface->format, flags);
slouken@1895
   551
}
slouken@1895
   552
slouken@1895
   553
SDL_Surface *
slouken@1895
   554
SDL_DisplayFormatAlpha(SDL_Surface * surface)
slouken@1895
   555
{
slouken@1895
   556
    SDL_PixelFormat *vf;
slouken@1895
   557
    SDL_PixelFormat *format;
slouken@1895
   558
    SDL_Surface *converted;
slouken@1895
   559
    Uint32 flags;
slouken@1895
   560
    /* default to ARGB8888 */
slouken@1895
   561
    Uint32 amask = 0xff000000;
slouken@1895
   562
    Uint32 rmask = 0x00ff0000;
slouken@1895
   563
    Uint32 gmask = 0x0000ff00;
slouken@1895
   564
    Uint32 bmask = 0x000000ff;
slouken@1895
   565
slouken@1895
   566
    if (!SDL_PublicSurface) {
slouken@1895
   567
        SDL_SetError("No video mode has been set");
slouken@1895
   568
        return NULL;
slouken@1895
   569
    }
slouken@1895
   570
    vf = SDL_PublicSurface->format;
slouken@1895
   571
slouken@1895
   572
    switch (vf->BytesPerPixel) {
slouken@1895
   573
    case 2:
slouken@1895
   574
        /* For XGY5[56]5, use, AXGY8888, where {X, Y} = {R, B}.
slouken@1895
   575
           For anything else (like ARGB4444) it doesn't matter
slouken@1895
   576
           since we have no special code for it anyway */
slouken@1895
   577
        if ((vf->Rmask == 0x1f) &&
slouken@1895
   578
            (vf->Bmask == 0xf800 || vf->Bmask == 0x7c00)) {
slouken@1895
   579
            rmask = 0xff;
slouken@1895
   580
            bmask = 0xff0000;
slouken@1895
   581
        }
slouken@1895
   582
        break;
slouken@1895
   583
slouken@1895
   584
    case 3:
slouken@1895
   585
    case 4:
slouken@1895
   586
        /* Keep the video format, as long as the high 8 bits are
slouken@1895
   587
           unused or alpha */
slouken@1895
   588
        if ((vf->Rmask == 0xff) && (vf->Bmask == 0xff0000)) {
slouken@1895
   589
            rmask = 0xff;
slouken@1895
   590
            bmask = 0xff0000;
slouken@1895
   591
        }
slouken@1895
   592
        break;
slouken@1895
   593
slouken@1895
   594
    default:
slouken@1895
   595
        /* We have no other optimised formats right now. When/if a new
slouken@1895
   596
           optimised alpha format is written, add the converter here */
slouken@1895
   597
        break;
slouken@1895
   598
    }
slouken@1895
   599
    format = SDL_AllocFormat(32, rmask, gmask, bmask, amask);
slouken@1895
   600
    flags = SDL_PublicSurface->flags & SDL_HWSURFACE;
slouken@1895
   601
    flags |= surface->flags & (SDL_SRCALPHA | SDL_RLEACCELOK);
slouken@1895
   602
    converted = SDL_ConvertSurface(surface, format, flags);
slouken@1895
   603
    SDL_FreeFormat(format);
slouken@1895
   604
    return converted;
slouken@1895
   605
}
slouken@1895
   606
slouken@1895
   607
int
slouken@1895
   608
SDL_Flip(SDL_Surface * screen)
slouken@1895
   609
{
slouken@1895
   610
    SDL_UpdateRect(screen, 0, 0, 0, 0);
slouken@1895
   611
    return 0;
slouken@1895
   612
}
slouken@1895
   613
slouken@1895
   614
void
slouken@1895
   615
SDL_UpdateRect(SDL_Surface * screen, Sint32 x, Sint32 y, Uint32 w, Uint32 h)
slouken@1895
   616
{
slouken@1895
   617
    if (screen) {
slouken@1895
   618
        SDL_Rect rect;
slouken@1895
   619
slouken@1895
   620
        /* Perform some checking */
slouken@1895
   621
        if (w == 0)
slouken@1895
   622
            w = screen->w;
slouken@1895
   623
        if (h == 0)
slouken@1895
   624
            h = screen->h;
slouken@1895
   625
        if ((int) (x + w) > screen->w)
slouken@1895
   626
            return;
slouken@1895
   627
        if ((int) (y + h) > screen->h)
slouken@1895
   628
            return;
slouken@1895
   629
slouken@1895
   630
        /* Fill the rectangle */
slouken@1895
   631
        rect.x = (Sint16) x;
slouken@1895
   632
        rect.y = (Sint16) y;
slouken@1895
   633
        rect.w = (Uint16) w;
slouken@1895
   634
        rect.h = (Uint16) h;
slouken@1895
   635
        SDL_UpdateRects(screen, 1, &rect);
slouken@1895
   636
    }
slouken@1895
   637
}
slouken@1895
   638
void
slouken@1895
   639
SDL_UpdateRects(SDL_Surface * screen, int numrects, SDL_Rect * rects)
slouken@1895
   640
{
slouken@1895
   641
    int i;
slouken@1895
   642
slouken@1895
   643
    if (screen == SDL_ShadowSurface) {
slouken@1895
   644
        for (i = 0; i < numrects; ++i) {
slouken@1895
   645
            SDL_LowerBlit(SDL_ShadowSurface, &rects[i], SDL_VideoSurface,
slouken@1895
   646
                          &rects[i]);
slouken@1895
   647
        }
slouken@1895
   648
slouken@1895
   649
        /* Fall through to video surface update */
slouken@1895
   650
        screen = SDL_VideoSurface;
slouken@1895
   651
    }
slouken@1895
   652
    if (screen == SDL_VideoSurface) {
slouken@1895
   653
        for (i = 0; i < numrects; ++i) {
slouken@1895
   654
            SDL_RenderCopy(SDL_VideoTexture, &rects[i], &rects[i],
slouken@1895
   655
                           SDL_TextureBlendMode_None,
slouken@1895
   656
                           SDL_TextureScaleMode_None);
slouken@1895
   657
        }
slouken@1895
   658
        SDL_RenderPresent();
slouken@1895
   659
    }
slouken@1895
   660
}
slouken@1895
   661
slouken@1895
   662
void
slouken@1895
   663
SDL_WM_SetCaption(const char *title, const char *icon)
slouken@1895
   664
{
slouken@1895
   665
    if (wm_title) {
slouken@1895
   666
        SDL_free(wm_title);
slouken@1895
   667
    } else {
slouken@1895
   668
        wm_title = SDL_strdup(title);
slouken@1895
   669
    }
slouken@1895
   670
    SDL_SetWindowTitle(SDL_VideoWindow, wm_title);
slouken@1895
   671
}
slouken@1895
   672
slouken@1895
   673
void
slouken@1895
   674
SDL_WM_GetCaption(char **title, char **icon)
slouken@1895
   675
{
slouken@1895
   676
    if (title) {
slouken@1895
   677
        *title = wm_title;
slouken@1895
   678
    }
slouken@1895
   679
    if (icon) {
slouken@1895
   680
        *icon = "";
slouken@1895
   681
    }
slouken@1895
   682
}
slouken@1895
   683
slouken@1895
   684
void
slouken@1895
   685
SDL_WM_SetIcon(SDL_Surface * icon, Uint8 * mask)
slouken@1895
   686
{
slouken@1895
   687
    /* FIXME */
slouken@1895
   688
}
slouken@1895
   689
slouken@1895
   690
int
slouken@1895
   691
SDL_WM_IconifyWindow(void)
slouken@1895
   692
{
slouken@1895
   693
    SDL_MinimizeWindow(SDL_VideoWindow);
slouken@1895
   694
    return 0;
slouken@1895
   695
}
slouken@1895
   696
slouken@1895
   697
int
slouken@1895
   698
SDL_WM_ToggleFullScreen(SDL_Surface * surface)
slouken@1895
   699
{
slouken@1895
   700
    if (SDL_GetWindowFlags(SDL_VideoWindow) & SDL_WINDOW_FULLSCREEN) {
slouken@1895
   701
        if (SDL_SetWindowFullscreen(SDL_VideoWindow, 0) < 0) {
slouken@1895
   702
            return 0;
slouken@1895
   703
        }
slouken@1895
   704
        SDL_PublicSurface->flags &= ~SDL_FULLSCREEN;
slouken@1895
   705
    } else {
slouken@1895
   706
        if (SDL_SetWindowFullscreen(SDL_VideoWindow, 1) < 0) {
slouken@1895
   707
            return 0;
slouken@1895
   708
        }
slouken@1895
   709
        SDL_PublicSurface->flags |= SDL_FULLSCREEN;
slouken@1895
   710
    }
slouken@1895
   711
    return 1;
slouken@1895
   712
}
slouken@1895
   713
slouken@1895
   714
SDL_GrabMode
slouken@1895
   715
SDL_WM_GrabInput(SDL_GrabMode mode)
slouken@1895
   716
{
slouken@1895
   717
    if (mode != SDL_GRAB_QUERY) {
slouken@1895
   718
        SDL_SetWindowGrab(SDL_VideoWindow, mode);
slouken@1895
   719
    }
slouken@1895
   720
    return (SDL_GrabMode) SDL_GetWindowGrab(SDL_VideoWindow);
slouken@1895
   721
}
slouken@1895
   722
slouken@1895
   723
void
slouken@1895
   724
SDL_WarpMouse(Uint16 x, Uint16 y)
slouken@1895
   725
{
slouken@1895
   726
    SDL_WarpMouseInWindow(SDL_VideoWindow, x, y);
slouken@1895
   727
}
slouken@1895
   728
slouken@1895
   729
Uint8
slouken@1895
   730
SDL_GetAppState(void)
slouken@1895
   731
{
slouken@1895
   732
    Uint8 state = 0;
slouken@1895
   733
    Uint32 flags = 0;
slouken@1895
   734
slouken@1895
   735
    flags = SDL_GetWindowFlags(SDL_VideoWindow);
slouken@1895
   736
    if ((flags & SDL_WINDOW_SHOWN) && !(flags & SDL_WINDOW_MINIMIZED)) {
slouken@1895
   737
        state |= SDL_APPACTIVE;
slouken@1895
   738
    }
slouken@1895
   739
    if (flags & SDL_WINDOW_INPUT_FOCUS) {
slouken@1895
   740
        state |= SDL_APPINPUTFOCUS;
slouken@1895
   741
    }
slouken@1895
   742
    if (flags & SDL_WINDOW_MOUSE_FOCUS) {
slouken@1895
   743
        state |= SDL_APPMOUSEFOCUS;
slouken@1895
   744
    }
slouken@1895
   745
    return state;
slouken@1895
   746
}
slouken@1895
   747
slouken@1895
   748
const SDL_version *
slouken@1895
   749
SDL_Linked_Version(void)
slouken@1895
   750
{
slouken@1895
   751
    static SDL_version version;
slouken@1895
   752
    SDL_VERSION(&version);
slouken@1895
   753
    return &version;
slouken@1895
   754
}
slouken@1895
   755
slouken@1895
   756
int
slouken@1895
   757
SDL_SetPalette(SDL_Surface * surface, int flags, const SDL_Color * colors,
slouken@1895
   758
               int firstcolor, int ncolors)
slouken@1895
   759
{
slouken@1895
   760
    return SDL_SetColors(surface, colors, firstcolor, ncolors);
slouken@1895
   761
}
slouken@1895
   762
slouken@1895
   763
int
slouken@1895
   764
SDL_SetColors(SDL_Surface * surface, const SDL_Color * colors, int firstcolor,
slouken@1895
   765
              int ncolors)
slouken@1895
   766
{
slouken@1895
   767
    if (SDL_SetPaletteColors
slouken@1895
   768
        (surface->format->palette, colors, firstcolor, ncolors) == 0) {
slouken@1895
   769
        return 1;
slouken@1895
   770
    } else {
slouken@1895
   771
        return 0;
slouken@1895
   772
    }
slouken@1895
   773
}
slouken@1895
   774
slouken@1895
   775
int
slouken@1895
   776
SDL_GetWMInfo(SDL_SysWMinfo * info)
slouken@1895
   777
{
slouken@1895
   778
    return SDL_GetWindowWMInfo(SDL_VideoWindow, info);
slouken@1895
   779
}
slouken@1895
   780
slouken@1895
   781
#if 0
slouken@1895
   782
void
slouken@1895
   783
SDL_MoveCursor(int x, int y)
slouken@1895
   784
{
slouken@1895
   785
    SDL_VideoDevice *_this = SDL_GetVideoDevice();
slouken@1895
   786
slouken@1895
   787
    /* Erase and update the current mouse position */
slouken@1895
   788
    if (SHOULD_DRAWCURSOR(SDL_cursorstate)) {
slouken@1895
   789
        /* Erase and redraw mouse cursor in new position */
slouken@1895
   790
        SDL_LockCursor();
slouken@1895
   791
        SDL_EraseCursor(SDL_VideoSurface);
slouken@1895
   792
        SDL_cursor->area.x = (x - SDL_cursor->hot_x);
slouken@1895
   793
        SDL_cursor->area.y = (y - SDL_cursor->hot_y);
slouken@1895
   794
        SDL_DrawCursor(SDL_VideoSurface);
slouken@1895
   795
        SDL_UnlockCursor();
slouken@1895
   796
    } else if (_this->MoveWMCursor) {
slouken@1895
   797
        _this->MoveWMCursor(_this, x, y);
slouken@1895
   798
    }
slouken@1895
   799
}
slouken@1895
   800
slouken@1895
   801
/* Keep track of the current cursor colors */
slouken@1895
   802
static int palette_changed = 1;
slouken@1895
   803
static Uint8 pixels8[2];
slouken@1895
   804
slouken@1895
   805
void
slouken@1895
   806
SDL_CursorPaletteChanged(void)
slouken@1895
   807
{
slouken@1895
   808
    palette_changed = 1;
slouken@1895
   809
}
slouken@1895
   810
slouken@1895
   811
void
slouken@1895
   812
SDL_MouseRect(SDL_Rect * area)
slouken@1895
   813
{
slouken@1895
   814
    SDL_VideoDevice *_this = SDL_GetVideoDevice();
slouken@1895
   815
    int clip_diff;
slouken@1895
   816
slouken@1895
   817
    *area = SDL_cursor->area;
slouken@1895
   818
    if (area->x < 0) {
slouken@1895
   819
        area->w += area->x;
slouken@1895
   820
        area->x = 0;
slouken@1895
   821
    }
slouken@1895
   822
    if (area->y < 0) {
slouken@1895
   823
        area->h += area->y;
slouken@1895
   824
        area->y = 0;
slouken@1895
   825
    }
slouken@1895
   826
    clip_diff = (area->x + area->w) - SDL_VideoSurface->w;
slouken@1895
   827
    if (clip_diff > 0) {
slouken@1895
   828
        area->w = area->w < clip_diff ? 0 : area->w - clip_diff;
slouken@1895
   829
    }
slouken@1895
   830
    clip_diff = (area->y + area->h) - SDL_VideoSurface->h;
slouken@1895
   831
    if (clip_diff > 0) {
slouken@1895
   832
        area->h = area->h < clip_diff ? 0 : area->h - clip_diff;
slouken@1895
   833
    }
slouken@1895
   834
}
slouken@1895
   835
slouken@1895
   836
static void
slouken@1895
   837
SDL_DrawCursorFast(SDL_Surface * screen, SDL_Rect * area)
slouken@1895
   838
{
slouken@1895
   839
    const Uint32 pixels[2] = { 0xFFFFFFFF, 0x00000000 };
slouken@1895
   840
    int i, w, h;
slouken@1895
   841
    Uint8 *data, datab;
slouken@1895
   842
    Uint8 *mask, maskb;
slouken@1895
   843
slouken@1895
   844
    data = SDL_cursor->data + area->y * SDL_cursor->area.w / 8;
slouken@1895
   845
    mask = SDL_cursor->mask + area->y * SDL_cursor->area.w / 8;
slouken@1895
   846
    switch (screen->format->BytesPerPixel) {
slouken@1895
   847
slouken@1895
   848
    case 1:
slouken@1895
   849
        {
slouken@1895
   850
            Uint8 *dst;
slouken@1895
   851
            int dstskip;
slouken@1895
   852
slouken@1895
   853
            if (palette_changed) {
slouken@1895
   854
                pixels8[0] =
slouken@1895
   855
                    (Uint8) SDL_MapRGB(screen->format, 255, 255, 255);
slouken@1895
   856
                pixels8[1] = (Uint8) SDL_MapRGB(screen->format, 0, 0, 0);
slouken@1895
   857
                palette_changed = 0;
slouken@1895
   858
            }
slouken@1895
   859
            dst = (Uint8 *) screen->pixels +
slouken@1895
   860
                (SDL_cursor->area.y + area->y) * screen->pitch +
slouken@1895
   861
                SDL_cursor->area.x;
slouken@1895
   862
            dstskip = screen->pitch - area->w;
slouken@1895
   863
slouken@1895
   864
            for (h = area->h; h; h--) {
slouken@1895
   865
                for (w = area->w / 8; w; w--) {
slouken@1895
   866
                    maskb = *mask++;
slouken@1895
   867
                    datab = *data++;
slouken@1895
   868
                    for (i = 0; i < 8; ++i) {
slouken@1895
   869
                        if (maskb & 0x80) {
slouken@1895
   870
                            *dst = pixels8[datab >> 7];
slouken@1895
   871
                        }
slouken@1895
   872
                        maskb <<= 1;
slouken@1895
   873
                        datab <<= 1;
slouken@1895
   874
                        dst++;
slouken@1895
   875
                    }
slouken@1895
   876
                }
slouken@1895
   877
                dst += dstskip;
slouken@1895
   878
            }
slouken@1895
   879
        }
slouken@1895
   880
        break;
slouken@1895
   881
slouken@1895
   882
    case 2:
slouken@1895
   883
        {
slouken@1895
   884
            Uint16 *dst;
slouken@1895
   885
            int dstskip;
slouken@1895
   886
slouken@1895
   887
            dst = (Uint16 *) screen->pixels +
slouken@1895
   888
                (SDL_cursor->area.y + area->y) * screen->pitch / 2 +
slouken@1895
   889
                SDL_cursor->area.x;
slouken@1895
   890
            dstskip = (screen->pitch / 2) - area->w;
slouken@1895
   891
slouken@1895
   892
            for (h = area->h; h; h--) {
slouken@1895
   893
                for (w = area->w / 8; w; w--) {
slouken@1895
   894
                    maskb = *mask++;
slouken@1895
   895
                    datab = *data++;
slouken@1895
   896
                    for (i = 0; i < 8; ++i) {
slouken@1895
   897
                        if (maskb & 0x80) {
slouken@1895
   898
                            *dst = (Uint16) pixels[datab >> 7];
slouken@1895
   899
                        }
slouken@1895
   900
                        maskb <<= 1;
slouken@1895
   901
                        datab <<= 1;
slouken@1895
   902
                        dst++;
slouken@1895
   903
                    }
slouken@1895
   904
                }
slouken@1895
   905
                dst += dstskip;
slouken@1895
   906
            }
slouken@1895
   907
        }
slouken@1895
   908
        break;
slouken@1895
   909
slouken@1895
   910
    case 3:
slouken@1895
   911
        {
slouken@1895
   912
            Uint8 *dst;
slouken@1895
   913
            int dstskip;
slouken@1895
   914
slouken@1895
   915
            dst = (Uint8 *) screen->pixels +
slouken@1895
   916
                (SDL_cursor->area.y + area->y) * screen->pitch +
slouken@1895
   917
                SDL_cursor->area.x * 3;
slouken@1895
   918
            dstskip = screen->pitch - area->w * 3;
slouken@1895
   919
slouken@1895
   920
            for (h = area->h; h; h--) {
slouken@1895
   921
                for (w = area->w / 8; w; w--) {
slouken@1895
   922
                    maskb = *mask++;
slouken@1895
   923
                    datab = *data++;
slouken@1895
   924
                    for (i = 0; i < 8; ++i) {
slouken@1895
   925
                        if (maskb & 0x80) {
slouken@1895
   926
                            SDL_memset(dst, pixels[datab >> 7], 3);
slouken@1895
   927
                        }
slouken@1895
   928
                        maskb <<= 1;
slouken@1895
   929
                        datab <<= 1;
slouken@1895
   930
                        dst += 3;
slouken@1895
   931
                    }
slouken@1895
   932
                }
slouken@1895
   933
                dst += dstskip;
slouken@1895
   934
            }
slouken@1895
   935
        }
slouken@1895
   936
        break;
slouken@1895
   937
slouken@1895
   938
    case 4:
slouken@1895
   939
        {
slouken@1895
   940
            Uint32 *dst;
slouken@1895
   941
            int dstskip;
slouken@1895
   942
slouken@1895
   943
            dst = (Uint32 *) screen->pixels +
slouken@1895
   944
                (SDL_cursor->area.y + area->y) * screen->pitch / 4 +
slouken@1895
   945
                SDL_cursor->area.x;
slouken@1895
   946
            dstskip = (screen->pitch / 4) - area->w;
slouken@1895
   947
slouken@1895
   948
            for (h = area->h; h; h--) {
slouken@1895
   949
                for (w = area->w / 8; w; w--) {
slouken@1895
   950
                    maskb = *mask++;
slouken@1895
   951
                    datab = *data++;
slouken@1895
   952
                    for (i = 0; i < 8; ++i) {
slouken@1895
   953
                        if (maskb & 0x80) {
slouken@1895
   954
                            *dst = pixels[datab >> 7];
slouken@1895
   955
                        }
slouken@1895
   956
                        maskb <<= 1;
slouken@1895
   957
                        datab <<= 1;
slouken@1895
   958
                        dst++;
slouken@1895
   959
                    }
slouken@1895
   960
                }
slouken@1895
   961
                dst += dstskip;
slouken@1895
   962
            }
slouken@1895
   963
        }
slouken@1895
   964
        break;
slouken@1895
   965
    }
slouken@1895
   966
}
slouken@1895
   967
slouken@1895
   968
static void
slouken@1895
   969
SDL_DrawCursorSlow(SDL_Surface * screen, SDL_Rect * area)
slouken@1895
   970
{
slouken@1895
   971
    const Uint32 pixels[2] = { 0xFFFFFF, 0x000000 };
slouken@1895
   972
    int h;
slouken@1895
   973
    int x, minx, maxx;
slouken@1895
   974
    Uint8 *data, datab = 0;
slouken@1895
   975
    Uint8 *mask, maskb = 0;
slouken@1895
   976
    Uint8 *dst;
slouken@1895
   977
    int dstbpp, dstskip;
slouken@1895
   978
slouken@1895
   979
    data = SDL_cursor->data + area->y * SDL_cursor->area.w / 8;
slouken@1895
   980
    mask = SDL_cursor->mask + area->y * SDL_cursor->area.w / 8;
slouken@1895
   981
    dstbpp = screen->format->BytesPerPixel;
slouken@1895
   982
    dst = (Uint8 *) screen->pixels +
slouken@1895
   983
        (SDL_cursor->area.y + area->y) * screen->pitch +
slouken@1895
   984
        SDL_cursor->area.x * dstbpp;
slouken@1895
   985
    dstskip = screen->pitch - SDL_cursor->area.w * dstbpp;
slouken@1895
   986
slouken@1895
   987
    minx = area->x;
slouken@1895
   988
    maxx = area->x + area->w;
slouken@1895
   989
    if (screen->format->BytesPerPixel == 1) {
slouken@1895
   990
        if (palette_changed) {
slouken@1895
   991
            pixels8[0] = (Uint8) SDL_MapRGB(screen->format, 255, 255, 255);
slouken@1895
   992
            pixels8[1] = (Uint8) SDL_MapRGB(screen->format, 0, 0, 0);
slouken@1895
   993
            palette_changed = 0;
slouken@1895
   994
        }
slouken@1895
   995
        for (h = area->h; h; h--) {
slouken@1895
   996
            for (x = 0; x < SDL_cursor->area.w; ++x) {
slouken@1895
   997
                if ((x % 8) == 0) {
slouken@1895
   998
                    maskb = *mask++;
slouken@1895
   999
                    datab = *data++;
slouken@1895
  1000
                }
slouken@1895
  1001
                if ((x >= minx) && (x < maxx)) {
slouken@1895
  1002
                    if (maskb & 0x80) {
slouken@1895
  1003
                        SDL_memset(dst, pixels8[datab >> 7], dstbpp);
slouken@1895
  1004
                    }
slouken@1895
  1005
                }
slouken@1895
  1006
                maskb <<= 1;
slouken@1895
  1007
                datab <<= 1;
slouken@1895
  1008
                dst += dstbpp;
slouken@1895
  1009
            }
slouken@1895
  1010
            dst += dstskip;
slouken@1895
  1011
        }
slouken@1895
  1012
    } else {
slouken@1895
  1013
        for (h = area->h; h; h--) {
slouken@1895
  1014
            for (x = 0; x < SDL_cursor->area.w; ++x) {
slouken@1895
  1015
                if ((x % 8) == 0) {
slouken@1895
  1016
                    maskb = *mask++;
slouken@1895
  1017
                    datab = *data++;
slouken@1895
  1018
                }
slouken@1895
  1019
                if ((x >= minx) && (x < maxx)) {
slouken@1895
  1020
                    if (maskb & 0x80) {
slouken@1895
  1021
                        SDL_memset(dst, pixels[datab >> 7], dstbpp);
slouken@1895
  1022
                    }
slouken@1895
  1023
                }
slouken@1895
  1024
                maskb <<= 1;
slouken@1895
  1025
                datab <<= 1;
slouken@1895
  1026
                dst += dstbpp;
slouken@1895
  1027
            }
slouken@1895
  1028
            dst += dstskip;
slouken@1895
  1029
        }
slouken@1895
  1030
    }
slouken@1895
  1031
}
slouken@1895
  1032
slouken@1895
  1033
/* This handles the ugly work of converting the saved cursor background from
slouken@1895
  1034
   the pixel format of the shadow surface to that of the video surface.
slouken@1895
  1035
   This is only necessary when blitting from a shadow surface of a different
slouken@1895
  1036
   pixel format than the video surface, and using a software rendered cursor.
slouken@1895
  1037
*/
slouken@1895
  1038
static void
slouken@1895
  1039
SDL_ConvertCursorSave(SDL_Surface * screen, int w, int h)
slouken@1895
  1040
{
slouken@1895
  1041
    SDL_VideoDevice *_this = SDL_GetVideoDevice();
slouken@1895
  1042
    SDL_BlitInfo info;
slouken@1895
  1043
    SDL_loblit RunBlit;
slouken@1895
  1044
slouken@1895
  1045
    /* Make sure we can steal the blit mapping */
slouken@1895
  1046
    if (screen->map->dst != SDL_VideoSurface) {
slouken@1895
  1047
        return;
slouken@1895
  1048
    }
slouken@1895
  1049
slouken@1895
  1050
    /* Set up the blit information */
slouken@1895
  1051
    info.s_pixels = SDL_cursor->save[1];
slouken@1895
  1052
    info.s_width = w;
slouken@1895
  1053
    info.s_height = h;
slouken@1895
  1054
    info.s_skip = 0;
slouken@1895
  1055
    info.d_pixels = SDL_cursor->save[0];
slouken@1895
  1056
    info.d_width = w;
slouken@1895
  1057
    info.d_height = h;
slouken@1895
  1058
    info.d_skip = 0;
slouken@1895
  1059
    info.aux_data = screen->map->sw_data->aux_data;
slouken@1895
  1060
    info.src = screen->format;
slouken@1895
  1061
    info.table = screen->map->table;
slouken@1895
  1062
    info.dst = SDL_VideoSurface->format;
slouken@1895
  1063
    RunBlit = screen->map->sw_data->blit;
slouken@1895
  1064
slouken@1895
  1065
    /* Run the actual software blit */
slouken@1895
  1066
    RunBlit(&info);
slouken@1895
  1067
}
slouken@1895
  1068
slouken@1895
  1069
void
slouken@1895
  1070
SDL_DrawCursorNoLock(SDL_Surface * screen)
slouken@1895
  1071
{
slouken@1895
  1072
    SDL_VideoDevice *_this = SDL_GetVideoDevice();
slouken@1895
  1073
    SDL_Rect area;
slouken@1895
  1074
slouken@1895
  1075
    /* Get the mouse rectangle, clipped to the screen */
slouken@1895
  1076
    SDL_MouseRect(&area);
slouken@1895
  1077
    if ((area.w == 0) || (area.h == 0)) {
slouken@1895
  1078
        return;
slouken@1895
  1079
    }
slouken@1895
  1080
slouken@1895
  1081
    /* Copy mouse background */
slouken@1895
  1082
    {
slouken@1895
  1083
        int w, h, screenbpp;
slouken@1895
  1084
        Uint8 *src, *dst;
slouken@1895
  1085
slouken@1895
  1086
        /* Set up the copy pointers */
slouken@1895
  1087
        screenbpp = screen->format->BytesPerPixel;
slouken@1895
  1088
        if ((screen == SDL_VideoSurface) ||
slouken@1895
  1089
            FORMAT_EQUAL(screen->format, SDL_VideoSurface->format)) {
slouken@1895
  1090
            dst = SDL_cursor->save[0];
slouken@1895
  1091
        } else {
slouken@1895
  1092
            dst = SDL_cursor->save[1];
slouken@1895
  1093
        }
slouken@1895
  1094
        src = (Uint8 *) screen->pixels + area.y * screen->pitch +
slouken@1895
  1095
            area.x * screenbpp;
slouken@1895
  1096
slouken@1895
  1097
        /* Perform the copy */
slouken@1895
  1098
        w = area.w * screenbpp;
slouken@1895
  1099
        h = area.h;
slouken@1895
  1100
        while (h--) {
slouken@1895
  1101
            SDL_memcpy(dst, src, w);
slouken@1895
  1102
            dst += w;
slouken@1895
  1103
            src += screen->pitch;
slouken@1895
  1104
        }
slouken@1895
  1105
    }
slouken@1895
  1106
slouken@1895
  1107
    /* Draw the mouse cursor */
slouken@1895
  1108
    area.x -= SDL_cursor->area.x;
slouken@1895
  1109
    area.y -= SDL_cursor->area.y;
slouken@1895
  1110
    if ((area.x == 0) && (area.w == SDL_cursor->area.w)) {
slouken@1895
  1111
        SDL_DrawCursorFast(screen, &area);
slouken@1895
  1112
    } else {
slouken@1895
  1113
        SDL_DrawCursorSlow(screen, &area);
slouken@1895
  1114
    }
slouken@1895
  1115
}
slouken@1895
  1116
slouken@1895
  1117
void
slouken@1895
  1118
SDL_DrawCursor(SDL_Surface * screen)
slouken@1895
  1119
{
slouken@1895
  1120
    /* Lock the screen if necessary */
slouken@1895
  1121
    if (screen == NULL) {
slouken@1895
  1122
        return;
slouken@1895
  1123
    }
slouken@1895
  1124
    if (SDL_MUSTLOCK(screen)) {
slouken@1895
  1125
        if (SDL_LockSurface(screen) < 0) {
slouken@1895
  1126
            return;
slouken@1895
  1127
        }
slouken@1895
  1128
    }
slouken@1895
  1129
slouken@1895
  1130
    SDL_DrawCursorNoLock(screen);
slouken@1895
  1131
slouken@1895
  1132
    /* Unlock the screen and update if necessary */
slouken@1895
  1133
    if (SDL_MUSTLOCK(screen)) {
slouken@1895
  1134
        SDL_UnlockSurface(screen);
slouken@1895
  1135
    }
slouken@1895
  1136
    if ((screen->flags & SDL_SCREEN_SURFACE) &&
slouken@1895
  1137
        !(screen->flags & SDL_HWSURFACE)) {
slouken@1895
  1138
        SDL_VideoDevice *_this = SDL_GetVideoDevice();
slouken@1895
  1139
        SDL_Window *window;
slouken@1895
  1140
        SDL_Rect area;
slouken@1895
  1141
slouken@1895
  1142
        window = SDL_GetWindowFromSurface(screen);
slouken@1895
  1143
        if (!window) {
slouken@1895
  1144
            return;
slouken@1895
  1145
        }
slouken@1895
  1146
slouken@1895
  1147
        SDL_MouseRect(&area);
slouken@1895
  1148
slouken@1895
  1149
        if (_this->UpdateWindowSurface) {
slouken@1895
  1150
            _this->UpdateWindowSurface(_this, window, 1, &area);
slouken@1895
  1151
        }
slouken@1895
  1152
    }
slouken@1895
  1153
}
slouken@1895
  1154
slouken@1895
  1155
void
slouken@1895
  1156
SDL_EraseCursorNoLock(SDL_Surface * screen)
slouken@1895
  1157
{
slouken@1895
  1158
    SDL_VideoDevice *_this = SDL_GetVideoDevice();
slouken@1895
  1159
    SDL_Window *window;
slouken@1895
  1160
    SDL_Rect area;
slouken@1895
  1161
slouken@1895
  1162
    /* Get the window associated with the surface */
slouken@1895
  1163
    window = SDL_GetWindowFromSurface(screen);
slouken@1895
  1164
    if (!window || !window->surface) {
slouken@1895
  1165
        return;
slouken@1895
  1166
    }
slouken@1895
  1167
slouken@1895
  1168
    /* Get the mouse rectangle, clipped to the screen */
slouken@1895
  1169
    SDL_MouseRect(&area);
slouken@1895
  1170
    if ((area.w == 0) || (area.h == 0)) {
slouken@1895
  1171
        return;
slouken@1895
  1172
    }
slouken@1895
  1173
slouken@1895
  1174
    /* Copy mouse background */
slouken@1895
  1175
    {
slouken@1895
  1176
        int w, h, screenbpp;
slouken@1895
  1177
        Uint8 *src, *dst;
slouken@1895
  1178
slouken@1895
  1179
        /* Set up the copy pointers */
slouken@1895
  1180
        screenbpp = screen->format->BytesPerPixel;
slouken@1895
  1181
        if ((screen->flags & SDL_SCREEN_SURFACE) ||
slouken@1895
  1182
            FORMAT_EQUAL(screen->format, window->surface->format)) {
slouken@1895
  1183
            src = SDL_cursor->save[0];
slouken@1895
  1184
        } else {
slouken@1895
  1185
            src = SDL_cursor->save[1];
slouken@1895
  1186
        }
slouken@1895
  1187
        dst = (Uint8 *) screen->pixels + area.y * screen->pitch +
slouken@1895
  1188
            area.x * screenbpp;
slouken@1895
  1189
slouken@1895
  1190
        /* Perform the copy */
slouken@1895
  1191
        w = area.w * screenbpp;
slouken@1895
  1192
        h = area.h;
slouken@1895
  1193
        while (h--) {
slouken@1895
  1194
            SDL_memcpy(dst, src, w);
slouken@1895
  1195
            src += w;
slouken@1895
  1196
            dst += screen->pitch;
slouken@1895
  1197
        }
slouken@1895
  1198
slouken@1895
  1199
        /* Perform pixel conversion on cursor background */
slouken@1895
  1200
        if (src > SDL_cursor->save[1]) {
slouken@1895
  1201
            SDL_ConvertCursorSave(screen, area.w, area.h);
slouken@1895
  1202
        }
slouken@1895
  1203
    }
slouken@1895
  1204
}
slouken@1895
  1205
slouken@1895
  1206
void
slouken@1895
  1207
SDL_EraseCursor(SDL_Surface * screen)
slouken@1895
  1208
{
slouken@1895
  1209
    /* Lock the screen if necessary */
slouken@1895
  1210
    if (screen == NULL) {
slouken@1895
  1211
        return;
slouken@1895
  1212
    }
slouken@1895
  1213
    if (SDL_MUSTLOCK(screen)) {
slouken@1895
  1214
        if (SDL_LockSurface(screen) < 0) {
slouken@1895
  1215
            return;
slouken@1895
  1216
        }
slouken@1895
  1217
    }
slouken@1895
  1218
slouken@1895
  1219
    SDL_EraseCursorNoLock(screen);
slouken@1895
  1220
slouken@1895
  1221
    /* Unlock the screen and update if necessary */
slouken@1895
  1222
    if (SDL_MUSTLOCK(screen)) {
slouken@1895
  1223
        SDL_UnlockSurface(screen);
slouken@1895
  1224
    }
slouken@1895
  1225
    if ((screen->flags & SDL_SCREEN_SURFACE) &&
slouken@1895
  1226
        !(screen->flags & SDL_HWSURFACE)) {
slouken@1895
  1227
        SDL_VideoDevice *_this = SDL_GetVideoDevice();
slouken@1895
  1228
        SDL_Window *window;
slouken@1895
  1229
        SDL_Rect area;
slouken@1895
  1230
slouken@1895
  1231
        window = SDL_GetWindowFromSurface(screen);
slouken@1895
  1232
        if (!window) {
slouken@1895
  1233
            return;
slouken@1895
  1234
        }
slouken@1895
  1235
slouken@1895
  1236
        SDL_MouseRect(&area);
slouken@1895
  1237
slouken@1895
  1238
        if (_this->UpdateWindowSurface) {
slouken@1895
  1239
            _this->UpdateWindowSurface(_this, window, 1, &area);
slouken@1895
  1240
        }
slouken@1895
  1241
    }
slouken@1895
  1242
}
slouken@1895
  1243
slouken@1895
  1244
/* Reset the cursor on video mode change
slouken@1895
  1245
   FIXME:  Keep track of all cursors, and reset them all.
slouken@1895
  1246
 */
slouken@1895
  1247
void
slouken@1895
  1248
SDL_ResetCursor(void)
slouken@1895
  1249
{
slouken@1895
  1250
    int savelen;
slouken@1895
  1251
slouken@1895
  1252
    if (SDL_cursor) {
slouken@1895
  1253
        savelen = SDL_cursor->area.w * 4 * SDL_cursor->area.h;
slouken@1895
  1254
        SDL_cursor->area.x = 0;
slouken@1895
  1255
        SDL_cursor->area.y = 0;
slouken@1895
  1256
        SDL_memset(SDL_cursor->save[0], 0, savelen);
slouken@1895
  1257
    }
slouken@1895
  1258
}
slouken@1895
  1259
#endif
slouken@1895
  1260
slouken@1895
  1261
struct private_yuvhwdata
slouken@1895
  1262
{
slouken@1895
  1263
    Uint16 pitches[3];
slouken@1895
  1264
    Uint8 *planes[3];
slouken@1895
  1265
slouken@1895
  1266
    SDL_TextureID textureID;
slouken@1895
  1267
};
slouken@1895
  1268
slouken@1895
  1269
SDL_Overlay *
slouken@1895
  1270
SDL_CreateYUVOverlay(int w, int h, Uint32 format, SDL_Surface * display)
slouken@1895
  1271
{
slouken@1895
  1272
    SDL_Overlay *overlay;
slouken@1895
  1273
    Uint32 texture_format;
slouken@1895
  1274
slouken@1895
  1275
    if ((display->flags & SDL_OPENGL) == SDL_OPENGL) {
slouken@1895
  1276
        SDL_SetError("YUV overlays are not supported in OpenGL mode");
slouken@1895
  1277
        return NULL;
slouken@1895
  1278
    }
slouken@1895
  1279
slouken@1895
  1280
    if (display != SDL_PublicSurface) {
slouken@1895
  1281
        SDL_SetError("YUV display is only supported on the screen surface");
slouken@1895
  1282
        return NULL;
slouken@1895
  1283
    }
slouken@1895
  1284
slouken@1895
  1285
    switch (format) {
slouken@1895
  1286
    case SDL_YV12_OVERLAY:
slouken@1895
  1287
        texture_format = SDL_PixelFormat_YV12;
slouken@1895
  1288
        break;
slouken@1895
  1289
    case SDL_IYUV_OVERLAY:
slouken@1895
  1290
        texture_format = SDL_PixelFormat_IYUV;
slouken@1895
  1291
        break;
slouken@1895
  1292
    case SDL_YUY2_OVERLAY:
slouken@1895
  1293
        texture_format = SDL_PixelFormat_YUY2;
slouken@1895
  1294
        break;
slouken@1895
  1295
    case SDL_UYVY_OVERLAY:
slouken@1895
  1296
        texture_format = SDL_PixelFormat_UYVY;
slouken@1895
  1297
        break;
slouken@1895
  1298
    case SDL_YVYU_OVERLAY:
slouken@1895
  1299
        texture_format = SDL_PixelFormat_YVYU;
slouken@1895
  1300
        break;
slouken@1895
  1301
    default:
slouken@1895
  1302
        SDL_SetError("Unknown YUV format");
slouken@1895
  1303
        return NULL;
slouken@1895
  1304
    }
slouken@1895
  1305
slouken@1895
  1306
    overlay = (SDL_Overlay *) SDL_malloc(sizeof(*overlay));
slouken@1895
  1307
    if (!overlay) {
slouken@1895
  1308
        SDL_OutOfMemory();
slouken@1895
  1309
        return NULL;
slouken@1895
  1310
    }
slouken@1895
  1311
    SDL_zerop(overlay);
slouken@1895
  1312
slouken@1895
  1313
    overlay->hwdata =
slouken@1895
  1314
        (struct private_yuvhwdata *) SDL_malloc(sizeof(*overlay->hwdata));
slouken@1895
  1315
    if (!overlay->hwdata) {
slouken@1895
  1316
        SDL_free(overlay);
slouken@1895
  1317
        SDL_OutOfMemory();
slouken@1895
  1318
        return NULL;
slouken@1895
  1319
    }
slouken@1895
  1320
slouken@1895
  1321
    overlay->format = format;
slouken@1895
  1322
    overlay->w = w;
slouken@1895
  1323
    overlay->h = h;
slouken@1895
  1324
    if (format == SDL_YV12_OVERLAY || format == SDL_IYUV_OVERLAY) {
slouken@1895
  1325
        overlay->planes = 3;
slouken@1895
  1326
    } else {
slouken@1895
  1327
        overlay->planes = 1;
slouken@1895
  1328
    }
slouken@1895
  1329
    overlay->pitches = overlay->hwdata->pitches;
slouken@1895
  1330
    overlay->pixels = overlay->hwdata->planes;
slouken@1895
  1331
slouken@1895
  1332
    switch (format) {
slouken@1895
  1333
    case SDL_YV12_OVERLAY:
slouken@1895
  1334
    case SDL_IYUV_OVERLAY:
slouken@1895
  1335
        overlay->pitches[0] = overlay->w;
slouken@1895
  1336
        overlay->pitches[1] = overlay->w / 2;
slouken@1895
  1337
        overlay->pitches[2] = overlay->w / 2;
slouken@1895
  1338
        break;
slouken@1895
  1339
    case SDL_YUY2_OVERLAY:
slouken@1895
  1340
    case SDL_UYVY_OVERLAY:
slouken@1895
  1341
    case SDL_YVYU_OVERLAY:
slouken@1895
  1342
        overlay->pitches[0] = overlay->w * 2;
slouken@1895
  1343
        break;
slouken@1895
  1344
    }
slouken@1895
  1345
slouken@1895
  1346
    overlay->hwdata->textureID =
slouken@1895
  1347
        SDL_CreateTexture(texture_format, SDL_TextureAccess_Local, w, h);
slouken@1895
  1348
    if (!overlay->hwdata->textureID) {
slouken@1895
  1349
        SDL_FreeYUVOverlay(overlay);
slouken@1895
  1350
        return NULL;
slouken@1895
  1351
    }
slouken@1895
  1352
slouken@1895
  1353
    return overlay;
slouken@1895
  1354
}
slouken@1895
  1355
slouken@1895
  1356
int
slouken@1895
  1357
SDL_LockYUVOverlay(SDL_Overlay * overlay)
slouken@1895
  1358
{
slouken@1895
  1359
    void *pixels;
slouken@1895
  1360
    int pitch;
slouken@1895
  1361
    if (SDL_LockTexture(overlay->hwdata->textureID, NULL, 1, &pixels, &pitch)
slouken@1895
  1362
        < 0) {
slouken@1895
  1363
        return -1;
slouken@1895
  1364
    }
slouken@1895
  1365
    switch (overlay->format) {
slouken@1895
  1366
    case SDL_YV12_OVERLAY:
slouken@1895
  1367
    case SDL_IYUV_OVERLAY:
slouken@1895
  1368
        overlay->pixels[0] = (Uint8 *) pixels;
slouken@1895
  1369
        overlay->pixels[1] =
slouken@1895
  1370
            overlay->pixels[0] + overlay->pitches[0] * overlay->h;
slouken@1895
  1371
        overlay->pixels[2] =
slouken@1895
  1372
            overlay->pixels[1] + overlay->pitches[1] * overlay->h;
slouken@1895
  1373
        break;
slouken@1895
  1374
    case SDL_YUY2_OVERLAY:
slouken@1895
  1375
    case SDL_UYVY_OVERLAY:
slouken@1895
  1376
    case SDL_YVYU_OVERLAY:
slouken@1895
  1377
        overlay->pixels[0] = (Uint8 *) pixels;
slouken@1895
  1378
        break;
slouken@1895
  1379
    }
slouken@1895
  1380
    return 0;
slouken@1895
  1381
}
slouken@1895
  1382
slouken@1895
  1383
void
slouken@1895
  1384
SDL_UnlockYUVOverlay(SDL_Overlay * overlay)
slouken@1895
  1385
{
slouken@1895
  1386
    SDL_UnlockTexture(overlay->hwdata->textureID);
slouken@1895
  1387
}
slouken@1895
  1388
slouken@1895
  1389
int
slouken@1895
  1390
SDL_DisplayYUVOverlay(SDL_Overlay * overlay, SDL_Rect * dstrect)
slouken@1895
  1391
{
slouken@1895
  1392
    if (SDL_RenderCopy(overlay->hwdata->textureID, NULL, dstrect,
slouken@1895
  1393
                       SDL_TextureBlendMode_None,
slouken@1895
  1394
                       SDL_TextureScaleMode_Fast) < 0) {
slouken@1895
  1395
        return -1;
slouken@1895
  1396
    }
slouken@1895
  1397
    SDL_RenderPresent();
slouken@1895
  1398
    return 0;
slouken@1895
  1399
}
slouken@1895
  1400
slouken@1895
  1401
void
slouken@1895
  1402
SDL_FreeYUVOverlay(SDL_Overlay * overlay)
slouken@1895
  1403
{
slouken@1895
  1404
    if (overlay) {
slouken@1895
  1405
        if (overlay->hwdata) {
slouken@1895
  1406
            if (overlay->hwdata->textureID) {
slouken@1895
  1407
                SDL_DestroyTexture(overlay->hwdata->textureID);
slouken@1895
  1408
            }
slouken@1895
  1409
            SDL_free(overlay->hwdata);
slouken@1895
  1410
        }
slouken@1895
  1411
        SDL_free(overlay);
slouken@1895
  1412
    }
slouken@1895
  1413
}
slouken@1895
  1414
slouken@1895
  1415
/* vi: set ts=4 sw=4 expandtab: */