static int
DisplayPaletteChanged(void *userdata, SDL_Palette * palette)
{
#if USE_DISPLAY_PALETTE
    DirectFB_RenderData *data = (DirectFB_RenderData *) userdata;
    SDL_DFB_WINDOWSURFACE(data->window);
    IDirectFBPalette *surfpal;

    int i;
    int ncolors;
    DFBColor entries[256];

    SDL_DFB_CHECKERR(destsurf->GetPalette(destsurf, &surfpal));

    /* FIXME: number of colors */
    ncolors = (palette->ncolors < 256 ? palette->ncolors : 256);

    for (i = 0; i < ncolors; ++i) {
        entries[i].r = palette->colors[i].r;
        entries[i].g = palette->colors[i].g;
        entries[i].b = palette->colors[i].b;
        entries[i].a = palette->colors[i].a;
    }
    SDL_DFB_CHECKERR(surfpal->SetEntries(surfpal, entries, ncolors, 0));
    return 0;
  error:
#else
    SDL_Unsupported();
#endif
    return -1;
}
Esempio n. 2
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int QDirectFBPaintDevice::metric(QPaintDevice::PaintDeviceMetric metric) const
{
    if (!dfbSurface)
        return 0;

    int w, h;
    dfbSurface->GetSize(dfbSurface, &w, &h);

    switch (metric) {
    case QPaintDevice::PdmWidth:
        return w;
    case QPaintDevice::PdmHeight:
        return h;
    case QPaintDevice::PdmWidthMM:
        return (w * 1000) / dotsPerMeterX();
    case QPaintDevice::PdmHeightMM:
        return (h * 1000) / dotsPerMeterY();
    case QPaintDevice::PdmPhysicalDpiX:
    case QPaintDevice::PdmDpiX:
        return (dotsPerMeterX() * 254) / 10000; // 0.0254 meters-per-inch
    case QPaintDevice::PdmPhysicalDpiY:
    case QPaintDevice::PdmDpiY:
        return (dotsPerMeterY() * 254) / 10000; // 0.0254 meters-per-inch
    case QPaintDevice::PdmDepth:
        DFBSurfacePixelFormat format;
        dfbSurface->GetPixelFormat(dfbSurface, &format);
        return QDirectFBScreen::depth(format);
    case QPaintDevice::PdmNumColors: {
       if (lockedImage)
            return lockedImage->numColors();

        DFBResult result;
        IDirectFBPalette *palette = 0;
        unsigned int numColors = 0;

        result = dfbSurface->GetPalette(dfbSurface, &palette);
        if ((result != DFB_OK) || !palette)
            return 0;

        result = palette->GetSize(palette, &numColors);
        palette->Release(palette);
        if (result != DFB_OK)
            return 0;

        return numColors;
    }
    default:
        qCritical("QDirectFBPaintDevice::metric(): Unhandled metric!");
        return 0;
    }
}
Esempio n. 3
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int QDirectFBPaintDevice::metric(QPaintDevice::PaintDeviceMetric metric) const
{
    if (!dfbSurface)
        return 0;

    switch (metric) {
    case QPaintDevice::PdmWidth:
    case QPaintDevice::PdmHeight:
        return (metric == PdmWidth ? size().width() : size().height());
    case QPaintDevice::PdmWidthMM:
        return (size().width() * 1000) / dotsPerMeterX();
    case QPaintDevice::PdmHeightMM:
        return (size().height() * 1000) / dotsPerMeterY();
    case QPaintDevice::PdmPhysicalDpiX:
    case QPaintDevice::PdmDpiX:
        return (dotsPerMeterX() * 254) / 10000; // 0.0254 meters-per-inch
    case QPaintDevice::PdmPhysicalDpiY:
    case QPaintDevice::PdmDpiY:
        return (dotsPerMeterY() * 254) / 10000; // 0.0254 meters-per-inch
    case QPaintDevice::PdmDepth:
        return QDirectFBScreen::depth(imageFormat);
    case QPaintDevice::PdmNumColors: {
        if (!lockedImage.isNull())
            return lockedImage.colorCount();

        DFBResult result;
        IDirectFBPalette *palette = 0;
        unsigned int numColors = 0;

        result = dfbSurface->GetPalette(dfbSurface, &palette);
        if ((result != DFB_OK) || !palette)
            return 0;

        result = palette->GetSize(palette, &numColors);
        palette->Release(palette);
        if (result != DFB_OK)
            return 0;

        return numColors;
    }
    default:
        qCritical("QDirectFBPaintDevice::metric(): Unhandled metric!");
        return 0;
    }
}
Esempio n. 4
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//------------------------------------------------------------------------------
//  Unit Test main
//------------------------------------------------------------------------------
int main (int argc, char **argv)
{
    int i, j;
    DFBResult rle_build_databuffer_err;

    //    File name to load logo image from
    char *filename                           = NULL;

    //    Basic directfb elements
    IDirectFB               *dfb             = NULL;
    IDirectFBSurface        *primary         = NULL;
    int                      screen_width    = 0;
    int                      screen_height   = 0;

    //    The image is to be loaded into a surface that we can blit from.
    IDirectFBSurface         *logo           = NULL;

    //    Loading an image is done with an Image Provider.
    IDirectFBImageProvider   *provider       = NULL;

    //    An Image provider instance can also be created from a directfb buffer
    IDirectFBDataBuffer      *databuffer     = NULL;

    //    Surface description
    DFBSurfaceDescription     surface_dsc;



    //    Initialize directfb first
    DFBCHECK (DirectFBInit (&argc, &argv));
    DFBCHECK (DirectFBCreate (&dfb));
    DFBCHECK (dfb->SetCooperativeLevel (dfb, DFSCL_FULLSCREEN));


    //  Create primary surface
    surface_dsc.flags = DSDESC_CAPS;
    surface_dsc.caps  = DSCAPS_PRIMARY | DSCAPS_FLIPPING;
    DFBCHECK (dfb->CreateSurface( dfb, &surface_dsc, &primary ));
    DFBCHECK (primary->GetSize (primary, &screen_width, &screen_height));

    if (argc==1)
    {
        argv[1] = "./data/directfb.rle";
        argc++;
    }

    DISPLAY_INFO ("Rendering %d files\n",argc-1);
    for (j=1; j<argc; j++)
    {

        //
        //  --- WE CREATE OUR IMAGE PROVIDER INSTANCE HERE
        //
        filename     =     argv[j];
        DISPLAY_INFO ("Rendering : %s\n",filename);

        //  We create a directfb data buffer holding RLE image contents that we
        //  pick up from a file (could get the RLE contents from memory as well).
        //  "rle_build_databuffer" details the process of dealing with a memory
        //  RLE packet as a matter of fact.
        rle_build_databuffer_err = rle_build_databuffer (dfb, filename, &databuffer);
        if (rle_build_databuffer_err == DFB_OK) {
            //  We want to create an Image Provider tied to a directfb data buffer.
            //  DirectFB will find (or not) an Image Provider for the data type
            //  depending on Image Providers probe method (sniffing data headers)
            DFBCHECK (databuffer->CreateImageProvider (databuffer, &provider));
        }
        else {
#       ifdef   USE_PACKET_BUILDER_ONLY
            DFBFAIL(rle_build_databuffer_err);
#       else
            //  We could also create an Image Provider by passing a filename.
            //  DirectFB will find (or not) an Image Provider matching the file type.
            DFBCHECK (dfb->CreateImageProvider (dfb, filename, &provider));
#       endif
        }



        //    Get a surface description from the provider. It will contain the width,
        //    height, bits per pixel and the flag for an alphachannel if the image
        //    has one. If the image has no alphachannel the bits per pixel is set to
        //    the bits per pixel of the primary layer to use simple blitting without
        //    pixel format conversion.
        DFBCHECK (provider->GetSurfaceDescription (provider, &surface_dsc));

        //    Create a surface based on the description of the provider.
        DFBCHECK (dfb->CreateSurface( dfb, &surface_dsc, &logo ));

        //    Let the provider render to our surface. Image providers are supposed
        //    to support every destination pixel format and size. If the size
        //    differs the image will be scaled (bilinear). The last parameter allows
        //    to specify an optional destination rectangle. We use NULL here so that
        //    our image covers the whole logo surface.
        DFBCHECK (provider->RenderTo (provider, logo, NULL));
        //    Note: RLE Image Provider allows for direct non-scaled LUT-8 surface
        //          rendering without any attached colormap.

        #ifdef CLEVER_APPROACH
        //    Let's setup our logo surface palette outside of the RLE Image
        //    Provider if we got a colormap from rle_build_databuffer ...
        if (color_palette)
        {
            IDirectFBPalette *palette;
            DFBCHECK (logo->GetPalette (logo, &palette));
            palette->SetEntries (palette, color_palette, number_of_colors, 0);
            palette->Release (palette);
        }
        #endif

        //
        //  --- WE GET RID OF OUR IMAGE PROVIDER INSTANCE HERE
        //
        //    Release the provider, we don't need it anymore.
        provider->Release (provider);           provider    = NULL;
        //    Destroy the databuffer as well, we don't need it anymore.
        rle_destroy_databuffer (databuffer);    databuffer  = NULL;


#   ifndef SUBTITLES_MODE
        //    We want to let the logo slide in on the left and slide out on the
        //    right.
        for (i = -surface_dsc.width; i < screen_width; i++)
#   else
        //    We want to let the logo slide in on the right and slide out on the
        //    left.
        for (i = screen_width-1; i >= -surface_dsc.width; i--)
#   endif
        {
            //    Clear the screen.
            DFBCHECK (primary->FillRectangle (primary, 0, 0,
                                              screen_width, screen_height));

            //    Blit the logo vertically centered with "i" as the X coordinate.
            //    NULL means that we want to blit the whole surface.
            DFBCHECK (primary->Blit (primary, logo, NULL, i,
                                     (screen_height - surface_dsc.height) / 2));

            //    Flip the front and back buffer, but wait for the vertical
            //    retrace to avoid tearing.
            DFBCHECK (primary->Flip (primary, NULL, DSFLIP_WAITFORSYNC));

            if (argc < 3)
            {
                usleep(1000*5);
            }
        }

        //    Release the image.
        if (logo)
        {
            logo->Release (logo);
        }

   }

   //    Release everything else
   primary->Release (primary);
   dfb->Release (dfb);

   return 0;
}