C++ SDL_DFB_DEVICEDATA函数代码示例

void
DirectFB_GetDisplayModes(_THIS, SDL_VideoDisplay * display)
{
    SDL_DFB_DEVICEDATA(_this);
    DFB_DisplayData *dispdata = (DFB_DisplayData *) display->driverdata;
    SDL_DisplayMode mode;
    struct modes_callback_t data;
    int i;

    data.nummodes = 0;
    /* Enumerate the available fullscreen modes */
    SDL_DFB_CALLOC(data.modelist, DFB_MAX_MODES, sizeof(SDL_DisplayMode));
    SDL_DFB_CHECKERR(devdata->dfb->EnumVideoModes(devdata->dfb,
                                                  EnumModesCallback, &data));

    for (i = 0; i < data.nummodes; ++i) {
        mode = data.modelist[i];

        mode.format = SDL_PIXELFORMAT_ARGB8888;
        CheckSetDisplayMode(_this, display, dispdata, &mode);
        mode.format = SDL_PIXELFORMAT_RGB888;
        CheckSetDisplayMode(_this, display, dispdata, &mode);
        mode.format = SDL_PIXELFORMAT_RGB24;
        CheckSetDisplayMode(_this, display, dispdata, &mode);
        mode.format = SDL_PIXELFORMAT_RGB565;
        CheckSetDisplayMode(_this, display, dispdata, &mode);
        mode.format = SDL_PIXELFORMAT_INDEX8;
        CheckSetDisplayMode(_this, display, dispdata, &mode);
    }

    SDL_DFB_FREE(data.modelist);
error:
    return;
}

static SDL_keysym *
DirectFB_TranslateKeyInputEvent(_THIS, int index, DFBInputEvent * evt,
                                SDL_keysym * keysym)
{
    SDL_DFB_DEVICEDATA(_this);

    if (evt->key_code >= 0 &&
        evt->key_code < SDL_arraysize(linux_scancode_table))
        keysym->scancode = linux_scancode_table[evt->key_code];
    else
        keysym->scancode = SDL_SCANCODE_UNKNOWN;

    if (keysym->scancode == SDL_SCANCODE_UNKNOWN ||
        devdata->keyboard[index].is_generic) {
        if (evt->key_id - DIKI_UNKNOWN < SDL_arraysize(oskeymap))
            keysym->scancode = oskeymap[evt->key_id - DIKI_UNKNOWN];
        else
            keysym->scancode = SDL_SCANCODE_UNKNOWN;
    }

    keysym->unicode =
        (DFB_KEY_TYPE(evt->key_symbol) == DIKT_UNICODE) ? evt->key_symbol : 0;
    if (keysym->unicode == 0 &&
        (evt->key_symbol > 0 && evt->key_symbol < 255))
        keysym->unicode = evt->key_symbol;

    return keysym;
}

void
DirectFB_GL_SwapWindow(_THIS, SDL_Window * window)
{
    SDL_DFB_DEVICEDATA(_this);
    SDL_DFB_WINDOWDATA(window);
    int ret;
    DFBRegion region;

    region.x1 = 0;
    region.y1 = 0;
    region.x2 = window->w;
    region.y2 = window->h;

    if (devdata->glFinish)
        devdata->glFinish();
    else if (devdata->glFlush)
        devdata->glFlush();

    if (1 || windata->gl_context) {
        /* SDL_DFB_CHECKERR(windata->gl_context->context->Unlock(windata->gl_context->context)); */
        SDL_DFB_CHECKERR(windata->surface->Flip(windata->surface, &region,
                                                DSFLIP_ONSYNC));
        /* SDL_DFB_CHECKERR(windata->gl_context->context->Lock(windata->gl_context->context)); */

    }

    return;
  error:
    return;
}

void
DirectFB_DestroyWindow(_THIS, SDL_Window * window)
{
    SDL_DFB_DEVICEDATA(_this);
    SDL_DFB_WINDOWDATA(window);
    DFB_WindowData *p;

    SDL_DFB_DEBUG("Trace\n");

    /* Some cleanups */
    windata->window->UngrabPointer(windata->window);
    windata->window->UngrabKeyboard(windata->window);

    windata->window_surface->SetFont(windata->window_surface, NULL);
    SDL_DFB_RELEASE(windata->icon);
    SDL_DFB_RELEASE(windata->eventbuffer);
    SDL_DFB_RELEASE(windata->surface);
    SDL_DFB_RELEASE(windata->window_surface);

    SDL_DFB_RELEASE(windata->window);

    /* Remove from list ... */

    p = devdata->firstwin;
    while (p && p->next != windata)
        p = p->next;
    if (p)
        p->next = windata->next;
    else
        devdata->firstwin = windata->next;
    SDL_free(windata);
    return;
}

static void
LoadFont(_THIS, SDL_Window * window)
{
    SDL_DFB_DEVICEDATA(_this);
    SDL_DFB_WINDOWDATA(window);

    if (windata->font != NULL) {
        SDL_DFB_RELEASE(windata->font);
        windata->font = NULL;
        SDL_DFB_CHECK(windata->window_surface->SetFont(windata->window_surface, windata->font));
    }

    if (windata->theme.font != NULL)
    {
        DFBFontDescription fdesc;

        SDL_zero(fdesc);
        fdesc.flags = DFDESC_HEIGHT;
        fdesc.height = windata->theme.font_size;
        SDL_DFB_CHECK(devdata->
                      dfb->CreateFont(devdata->dfb, windata->theme.font,
                                      &fdesc, &windata->font));
        SDL_DFB_CHECK(windata->window_surface->SetFont(windata->window_surface, windata->font));
    }
}

void
DirectFB_InitMouse(_THIS)
{
    SDL_DFB_DEVICEDATA(_this);

    devdata->num_mice = 0;
    if (devdata->use_linux_input) {
        /* try non-core devices first */
        id_mask = 0xF0;
        devdata->dfb->EnumInputDevices(devdata->dfb, EnumMice, devdata);
        if (devdata->num_mice == 0) {
            /* try core devices */
            id_mask = 0x0F;
            devdata->dfb->EnumInputDevices(devdata->dfb, EnumMice, devdata);
        }
    }
    if (devdata->num_mice == 0) {
        SDL_Mouse mouse;

        SDL_zero(mouse);
        mouse.CreateCursor = DirectFB_CreateCursor;
        mouse.ShowCursor = DirectFB_ShowCursor;
        mouse.MoveCursor = DirectFB_MoveCursor;
        mouse.FreeCursor = DirectFB_FreeCursor;
        mouse.WarpMouse = DirectFB_WarpMouse;
        mouse.FreeMouse = DirectFB_FreeMouse;
        mouse.cursor_shown = 1;

        SDL_AddMouse(&mouse, "Mouse", 0, 0, 1);
        devdata->num_mice = 1;
    }
}

void
DirectFB_InitKeyboard(_THIS)
{
    SDL_DFB_DEVICEDATA(_this);
	cb_data cb;    
	
    DirectFB_InitOSKeymap(_this, &oskeymap[0], SDL_arraysize(oskeymap));

    devdata->num_keyboard = 0;
    cb.devdata = devdata;
    
    if (devdata->use_linux_input) {
    	cb.sys_kbd = 0;
        cb.sys_ids = 0;
        SDL_DFB_CHECK(devdata->dfb->
                      EnumInputDevices(devdata->dfb, EnumKeyboards, &cb));
        if (devdata->num_keyboard == 0) {
            cb.sys_ids = 1;
            SDL_DFB_CHECK(devdata->dfb->EnumInputDevices(devdata->dfb,
                                                         EnumKeyboards,
                                                         &cb));
        }
    } else {
    	cb.sys_kbd = 1;
        SDL_DFB_CHECK(devdata->dfb->EnumInputDevices(devdata->dfb,
                                                     EnumKeyboards,
                                                     &cb));
    }
}

static void
CheckSetDisplayMode(_THIS, SDL_VideoDisplay * display, DFB_DisplayData * data, SDL_DisplayMode * mode)
{
    SDL_DFB_DEVICEDATA(_this);
    DFBDisplayLayerConfig config;
    DFBDisplayLayerConfigFlags failed;

    SDL_DFB_CHECKERR(data->layer->SetCooperativeLevel(data->layer,
                                                      DLSCL_ADMINISTRATIVE));
    config.width = mode->w;
    config.height = mode->h;
    config.pixelformat = DirectFB_SDLToDFBPixelFormat(mode->format);
    config.flags = DLCONF_WIDTH | DLCONF_HEIGHT | DLCONF_PIXELFORMAT;
    if (devdata->use_yuv_underlays) {
        config.flags |= DLCONF_OPTIONS;
        config.options = DLOP_ALPHACHANNEL;
    }
    failed = 0;
    data->layer->TestConfiguration(data->layer, &config, &failed);
    SDL_DFB_CHECKERR(data->layer->SetCooperativeLevel(data->layer,
                                                      DLSCL_SHARED));
    if (failed == 0)
    {
        SDL_AddDisplayMode(display, mode);
        SDL_DFB_LOG("Mode %d x %d Added\n", mode->w, mode->h);
    }
    else
        SDL_DFB_ERR("Mode %d x %d not available: %x\n", mode->w,
                      mode->h, failed);

    return;
  error:
    return;
}

static int
DirectFB_AcquireVidLayer(SDL_Renderer * renderer, SDL_Texture * texture)
{
    //SDL_DFB_RENDERERDATA(renderer);
    SDL_Window *window = renderer->window;
    SDL_VideoDisplay *display = SDL_GetDisplayForWindow(window);
    SDL_DFB_DEVICEDATA(display->device);
    DFB_DisplayData *dispdata = (DFB_DisplayData *) display->driverdata;
    DirectFB_TextureData *data = texture->driverdata;
    DFBDisplayLayerConfig layconf;
    DFBResult ret;

    if (devdata->use_yuv_direct && (dispdata->vidID >= 0)
        && (!dispdata->vidIDinuse)
        && SDL_ISPIXELFORMAT_FOURCC(data->format)) {
        layconf.flags =
            DLCONF_WIDTH | DLCONF_HEIGHT | DLCONF_PIXELFORMAT |
            DLCONF_SURFACE_CAPS;
        layconf.width = texture->w;
        layconf.height = texture->h;
        layconf.pixelformat = DirectFB_SDLToDFBPixelFormat(data->format);
        layconf.surface_caps = DSCAPS_VIDEOONLY | DSCAPS_DOUBLE;

        SDL_DFB_CHECKERR(devdata->dfb->GetDisplayLayer(devdata->dfb,
                                                       dispdata->vidID,
                                                       &dispdata->vidlayer));
        SDL_DFB_CHECKERR(dispdata->
                         vidlayer->SetCooperativeLevel(dispdata->vidlayer,
                                                       DLSCL_EXCLUSIVE));

        if (devdata->use_yuv_underlays) {
            ret = dispdata->vidlayer->SetLevel(dispdata->vidlayer, -1);
            if (ret != DFB_OK)
                SDL_DFB_DEBUG("Underlay Setlevel not supported\n");
        }
        SDL_DFB_CHECKERR(dispdata->
                         vidlayer->SetConfiguration(dispdata->vidlayer,
                                                    &layconf));
        SDL_DFB_CHECKERR(dispdata->
                         vidlayer->GetSurface(dispdata->vidlayer,
                                              &data->surface));
        dispdata->vidIDinuse = 1;
        data->display = display;
        return 0;
    }
    return 1;
  error:
    if (dispdata->vidlayer) {
        SDL_DFB_RELEASE(data->surface);
        SDL_DFB_CHECKERR(dispdata->
                         vidlayer->SetCooperativeLevel(dispdata->vidlayer,
                                                       DLSCL_ADMINISTRATIVE));
        SDL_DFB_RELEASE(dispdata->vidlayer);
    }
    return 1;
}

void
DirectFB_QuitMouse(_THIS)
{
    SDL_DFB_DEVICEDATA(_this);

    if (devdata->use_linux_input) {
        SDL_MouseQuit();
    } else {
        SDL_DelMouse(0);
    }
}

static int
KbdIndex(_THIS, int id)
{
    SDL_DFB_DEVICEDATA(_this);
    int index;

    for (index = 0; index < devdata->num_keyboard; index++) {
        if (devdata->keyboard[index].id == id)
            return index;
    }
    return -1;
}

static SDL_Cursor *
DirectFB_CreateDefaultCursor(void)
{
    SDL_VideoDevice *dev = SDL_GetVideoDevice();

    SDL_DFB_DEVICEDATA(dev);
    DFB_CursorData *curdata;
    DFBResult ret;
    DFBSurfaceDescription dsc;
    SDL_Cursor *cursor;
    Uint32 *dest;
    Uint32 *p;
    int pitch, i, j;

    SDL_DFB_ALLOC_CLEAR( cursor, sizeof(*cursor));
    SDL_DFB_ALLOC_CLEAR(curdata, sizeof(*curdata));

    dsc.flags =
        DSDESC_WIDTH | DSDESC_HEIGHT | DSDESC_PIXELFORMAT | DSDESC_CAPS;
    dsc.caps = DSCAPS_VIDEOONLY;
    dsc.width = 32;
    dsc.height = 32;
    dsc.pixelformat = DSPF_ARGB;

    SDL_DFB_CHECKERR(devdata->dfb->CreateSurface(devdata->dfb, &dsc,
                                                 &curdata->surf));
    curdata->hotx = 0;
    curdata->hoty = 0;
    cursor->driverdata = curdata;

    SDL_DFB_CHECKERR(curdata->surf->Lock(curdata->surf, DSLF_WRITE,
                                         (void *) &dest, &pitch));

    /* Relies on the fact that this is only called with ARGB surface. */
    for (i = 0; i < 32; i++)
    {
        for (j = 0; j < 32; j++)
        {
            switch (arrow[i][j])
            {
            case ' ': dest[j] = 0x00000000; break;
            case '.': dest[j] = 0xffffffff; break;
            case 'X': dest[j] = 0xff000000; break;
            }
        }
        dest += (pitch >> 2);
    }

    curdata->surf->Unlock(curdata->surf);
    return cursor;
  error:
    return NULL;
}

void
DirectFB_SetWindowIcon(_THIS, SDL_Window * window, SDL_Surface * icon)
{
    SDL_DFB_DEVICEDATA(_this);
    SDL_DFB_WINDOWDATA(window);
    SDL_Surface *surface = NULL;
    DFBResult ret;

    if (icon) {
        SDL_PixelFormat format;
        DFBSurfaceDescription dsc;
        Uint32 *dest;
        Uint32 *p;
        int pitch, i;

        /* Convert the icon to ARGB for modern window managers */
        SDL_InitFormat(&format, 32, 0x00FF0000, 0x0000FF00, 0x000000FF,
                       0xFF000000);
        surface = SDL_ConvertSurface(icon, &format, 0);
        if (!surface) {
            return;
        }
        dsc.flags =
            DSDESC_WIDTH | DSDESC_HEIGHT | DSDESC_PIXELFORMAT | DSDESC_CAPS;
        dsc.caps = DSCAPS_VIDEOONLY;
        dsc.width = surface->w;
        dsc.height = surface->h;
        dsc.pixelformat = DSPF_ARGB;

        SDL_DFB_CHECKERR(devdata->dfb->CreateSurface(devdata->dfb, &dsc,
                                                     &windata->icon));

        SDL_DFB_CHECKERR(windata->icon->Lock(windata->icon, DSLF_WRITE,
                                             (void *) &dest, &pitch));

        p = surface->pixels;
        for (i = 0; i < surface->h; i++)
            memcpy((char *) dest + i * pitch,
                   (char *) p + i * surface->pitch, 4 * surface->w);

        windata->icon->Unlock(windata->icon);
        SDL_FreeSurface(surface);
    } else {
        SDL_DFB_RELEASE(windata->icon);
    }
    return;
  error:
    if (surface)
        SDL_FreeSurface(surface);
    SDL_DFB_RELEASE(windata->icon);
    return;
}

static void
FocusAllKeyboards(_THIS, SDL_Window *window)
{
#if USE_MULTI_API
    SDL_DFB_DEVICEDATA(_this);
    int index;

    for (index = 0; index < devdata->num_keyboard; index++)
        SDL_SetKeyboardFocus(index, id);
#else
    SDL_SetKeyboardFocus(window);
#endif
}

static void
FocusAllMice(_THIS, SDL_Window *window)
{
#if USE_MULTI_API
    SDL_DFB_DEVICEDATA(_this);
    int index;

    for (index = 0; index < devdata->num_mice; index++)
        SDL_SetMouseFocus(devdata->mouse_id[index], id);
#else
    SDL_SetMouseFocus(window);
#endif
}