C++ IDirectFBSurface::GetPixelFormat方法代码示例

static int
DirectFB_RenderReadPixels(SDL_Renderer * renderer, const SDL_Rect * rect,
                     Uint32 format, void * pixels, int pitch)
{
    Uint32 sdl_format;
    unsigned char* laypixels;
    int laypitch;
    DFBSurfacePixelFormat dfb_format;
    DirectFB_RenderData *data = (DirectFB_RenderData *) renderer->driverdata;
    IDirectFBSurface *winsurf = data->target;

    DirectFB_ActivateRenderer(renderer);

    winsurf->GetPixelFormat(winsurf, &dfb_format);
    sdl_format = DirectFB_DFBToSDLPixelFormat(dfb_format);
    winsurf->Lock(winsurf, DSLF_READ, (void **) &laypixels, &laypitch);

    laypixels += (rect->y * laypitch + rect->x * SDL_BYTESPERPIXEL(sdl_format) );
    SDL_ConvertPixels(rect->w, rect->h,
                      sdl_format, laypixels, laypitch,
                      format, pixels, pitch);

    winsurf->Unlock(winsurf);

    return 0;
}

static int OpenDisplay(vout_display_t *vd)
{
    vout_display_sys_t *sys = vd->sys;

    DFBSurfaceDescription dsc;
    /*dsc.flags = DSDESC_CAPS | DSDESC_HEIGHT | DSDESC_WIDTH;*/
    dsc.flags = DSDESC_CAPS;
    dsc.caps  = DSCAPS_PRIMARY | DSCAPS_FLIPPING;
    /*dsc.width = 352;*/
    /*dsc.height = 240;*/

    IDirectFB *directfb = NULL;
    if (DirectFBCreate(&directfb) != DFB_OK || !directfb)
        return VLC_EGENERIC;
    sys->directfb = directfb;

    IDirectFBSurface *primary = NULL;
    if (directfb->CreateSurface(directfb, &dsc, &primary) || !primary)
        return VLC_EGENERIC;
    sys->primary = primary;

    primary->GetSize(primary, &sys->width, &sys->height);
    primary->GetPixelFormat(primary, &sys->pixel_format);
    primary->FillRectangle(primary, 0, 0, sys->width, sys->height);
    primary->Flip(primary, NULL, 0);

    return VLC_SUCCESS;
}

static mrb_value surface_get_pixel_format(mrb_state *mrb, mrb_value self)
{
    IDirectFBSurface* surface = mrb_directfb_surface(mrb, self);
    if (surface != NULL) {
        DFBSurfacePixelFormat format;
        DFBResult ret = surface->GetPixelFormat(surface, &format);
        if (!ret) {
            return mrb_fixnum_value(format);
        }
    }
    return mrb_nil_value();
}

void QDirectFBPixmapData::copy(const QPixmapData *data, const QRect &rect)
{
    if (data->classId() != DirectFBClass) {
        QPixmapData::copy(data, rect);
        return;
    }

    IDirectFBSurface *src = static_cast<const QDirectFBPixmapData*>(data)->surface;

    DFBSurfaceDescription description;
    description.flags = DFBSurfaceDescriptionFlags(DSDESC_WIDTH |
                                                   DSDESC_HEIGHT |
                                                   DSDESC_PIXELFORMAT);
    description.width = rect.width();
    description.height = rect.height();
    src->GetPixelFormat(src, &description.pixelformat);

    IDirectFB *fb = QDirectFBScreen::instance()->dfb();

    DFBResult result = fb->CreateSurface(fb, &description, &surface);
    if (result != DFB_OK) {
        DirectFBError("QDirectFBPixmapData::copy()", result);
        setSerialNumber(0);
        return;
    }

#ifndef QT_NO_DIRECTFB_PALETTE
    IDirectFBPalette *palette;
    src->GetPalette(src, &palette);
    surface->SetPalette(surface, palette);
#endif

    surface->SetBlittingFlags(surface, DSBLIT_NOFX);
    const DFBRectangle blitRect = { rect.x(), rect.y(),
                                    rect.width(), rect.height() };
    result = surface->Blit(surface, src, &blitRect, 0, 0);
    if (result != DFB_OK)
        DirectFBError("QDirectFBPixmapData::copy()", result);

    setSerialNumber(++global_ser_no);
}

int
main( int argc, char *argv[] )
{
     int                    i;
     DFBResult              ret;
     DFBSurfaceDescription  desc;
     IDirectFB             *dfb;
     IDirectFBSurface      *dest            = NULL;
     const char            *url             = NULL;
     DFBFontAttributes      attributes      = DFFA_NONE;
     DFBSurfaceTextFlags    text_flags      = DSTF_TOPLEFT;
     int                    outline_width   = 0x10000;
     int                    outline_opacity = 255;
     const DFBColorID       color_ids[2]    = { DCID_PRIMARY, DCID_OUTLINE };
     const DFBColor         colors[2]       = { { 0xff, 0xff, 0xff, 0xff },
                                                { 0xff, 0x00, 0x80, 0xff } };

     /* Initialize DirectFB. */
     ret = DirectFBInit( &argc, &argv );
     if (ret) {
          D_DERROR( ret, "DFBTest/Font: DirectFBInit() failed!\n" );
          return ret;
     }

     /* Parse arguments. */
     for (i=1; i<argc; i++) {
          const char *arg = argv[i];

          if (strcmp( arg, "-h" ) == 0 || strcmp (arg, "--help") == 0)
               return print_usage( argv[0] );
          else if (strcmp (arg, "-v") == 0 || strcmp (arg, "--version") == 0) {
               fprintf (stderr, "dfbtest_blit version %s\n", DIRECTFB_VERSION);
               return false;
          }
          else if (strcmp (arg, "-o") == 0 || strcmp (arg, "--outline") == 0) {
               attributes |= DFFA_OUTLINED;
               text_flags |= DSTF_OUTLINE;
          }
          else if (strcmp (arg, "-ow") == 0 || strcmp (arg, "--outline-width") == 0) {
               if (++i == argc)
                    return print_usage( argv[0] );

               if (sscanf( argv[i], "%d", &outline_width ) != 1)
                    return print_usage( argv[0] );

               outline_width <<= 16;
          }
          else if (strcmp (arg, "-oo") == 0 || strcmp (arg, "--outline-opacity") == 0) {
               if (++i == argc)
                    return print_usage( argv[0] );

               if (sscanf( argv[i], "%d", &outline_opacity ) != 1)
                    return print_usage( argv[0] );
          }
          else if (!url)
               url = arg;
          else
               return print_usage( argv[0] );
     }

     /* Check if we got an URL. */
     if (!url)
          return print_usage( argv[0] );

     /* Create super interface. */
     ret = DirectFBCreate( &dfb );
     if (ret) {
          D_DERROR( ret, "DFBTest/Font: DirectFBCreate() failed!\n" );
          return ret;
     }

     /* Fill description for a primary surface. */
     desc.flags = DSDESC_CAPS;
     desc.caps  = DSCAPS_PRIMARY | DSCAPS_FLIPPING;

     dfb->SetCooperativeLevel( dfb, DFSCL_FULLSCREEN );

     /* Create a primary surface. */
     ret = dfb->CreateSurface( dfb, &desc, &dest );
     if (ret) {
          D_DERROR( ret, "DFBTest/Font: IDirectFB::CreateSurface() failed!\n" );
          goto out;
     }

     dest->GetSize( dest, &desc.width, &desc.height );
     dest->GetPixelFormat( dest, &desc.pixelformat );

     D_INFO( "DFBTest/Font: Destination is %dx%d using %s\n",
             desc.width, desc.height, dfb_pixelformat_name(desc.pixelformat) );

     for (i=10; i<50; i++) {
          IDirectFBFont *font;

          font = CreateFont( dfb, url, i, attributes, outline_width, outline_opacity );

          RenderChecker( dest, 64, 64 );

          dest->SetColors( dest, color_ids, colors, 2 );

          dest->SetFont( dest, font );
//.........这里部分代码省略.........

int
main( int argc, char *argv[] )
{
     DFBResult               ret;
     int                     i;
     DFBSurfaceDescription   desc;
     IDirectFB              *dfb;
     IDirectFBSurface       *dest          = NULL;
     DFBSurfacePixelFormat   dest_format   = DSPF_UNKNOWN;
     char                    pixel_buffer[100*100*4];
     IDirectFBSurface       *source        = NULL;
     IDirectFBEventBuffer   *keybuffer;
     DFBInputEvent           evt;
     bool                    quit          = false;

     /* Initialize DirectFB. */
     ret = DirectFBInit( &argc, &argv );
     if (ret) {
          D_DERROR( ret, "DFBTest/PreAlloc: DirectFBInit() failed!\n" );
          return ret;
     }

     /* Parse arguments. */
     for (i=1; i<argc; i++) {
          const char *arg = argv[i];

          if (strcmp( arg, "-h" ) == 0 || strcmp (arg, "--help") == 0)
               return print_usage( argv[0] );
          else if (strcmp (arg, "-v") == 0 || strcmp (arg, "--version") == 0) {
               fprintf (stderr, "dfbtest_blit version %s\n", DIRECTFB_VERSION);
               return false;
          }
          else if (strcmp (arg, "-d") == 0 || strcmp (arg, "--dest") == 0) {
               if (++i == argc) {
                    print_usage (argv[0]);
                    return false;
               }

               if (!parse_format( argv[i], &dest_format ))
                    return false;
          }
          else if (strcmp (arg, "-s") == 0 || strcmp (arg, "--static") == 0) {
               static_caps = DSCAPS_STATIC_ALLOC;
          }
          else
               return print_usage( argv[0] );
     }

     /* Create super interface. */
     ret = DirectFBCreate( &dfb );
     if (ret) {
          D_DERROR( ret, "DFBTest/PreAlloc: DirectFBCreate() failed!\n" );
          return ret;
     }

     /* Fill description for a primary surface. */
     desc.flags = DSDESC_CAPS;
     desc.caps  = DSCAPS_PRIMARY | DSCAPS_FLIPPING;

     if (dest_format != DSPF_UNKNOWN) {
          desc.flags       |= DSDESC_PIXELFORMAT;
          desc.pixelformat  = dest_format;
     }

     dfb->SetCooperativeLevel( dfb, DFSCL_FULLSCREEN );

     /* Create an input buffer for key events */
     dfb->CreateInputEventBuffer( dfb, DICAPS_KEYS,
                                  DFB_TRUE, &keybuffer);

     /* Create a primary surface. */
     ret = dfb->CreateSurface( dfb, &desc, &dest );
     if (ret) {
          D_DERROR( ret, "DFBTest/PreAlloc: IDirectFB::CreateSurface() for the destination failed!\n" );
          goto out;
     }

     dest->GetSize( dest, &desc.width, &desc.height );
     dest->GetPixelFormat( dest, &desc.pixelformat );

     D_INFO( "DFBTest/PreAlloc: Destination is %dx%d using %s\n",
             desc.width, desc.height, dfb_pixelformat_name(desc.pixelformat) );

     /* Create a preallocated surface. */
     desc.flags                 = DSDESC_WIDTH | DSDESC_HEIGHT | DSDESC_PIXELFORMAT | DSDESC_CAPS | DSDESC_PREALLOCATED;
     desc.width                 = 100;
     desc.height                = 100;
     desc.pixelformat           = DSPF_ARGB;
     desc.caps                  = static_caps;
     desc.preallocated[0].data  = pixel_buffer;
     desc.preallocated[0].pitch = 100 * 4;

     ret = dfb->CreateSurface( dfb, &desc, &source );
     if (ret) {
          D_DERROR( ret, "DFBTest/PreAlloc: IDirectFB::CreateSurface() for the preallocated source failed!\n" );
          goto out;
     }

     /* Before any other operation the pixel data can be written to without locking */
     gen_pixels( pixel_buffer, 100 * 4, 100 );
//.........这里部分代码省略.........

//.........这里部分代码省略.........
     ret = provider->GetSurfaceDescription( provider, &desc );
     if (ret) {
          D_DERROR( ret, "DFBTest/Blit: IDirectFBImageProvider::GetSurfaceDescription() failed!\n" );
          goto out;
     }

     if (source_format != DSPF_UNKNOWN)
          desc.pixelformat = source_format;
     
     D_INFO( "DFBTest/Blit: Source is %dx%d using %s\n",
             desc.width, desc.height, dfb_pixelformat_name(desc.pixelformat) );

     /* Create a surface for the image. */
     ret = dfb->CreateSurface( dfb, &desc, &source );
     if (ret) {
          D_DERROR( ret, "DFBTest/Blit: IDirectFB::CreateSurface() failed!\n" );
          goto out;
     }
     
     ret = provider->RenderTo( provider, source, NULL );
     if (ret) {
          D_DERROR( ret, "DFBTest/Blit: IDirectFBImageProvider::RenderTo() failed!\n" );
          goto out;
     }

     /* Fill description for a primary surface. */
     desc.flags = DSDESC_CAPS;
     desc.caps  = DSCAPS_PRIMARY | DSCAPS_FLIPPING;

     if (dest_format != DSPF_UNKNOWN) {
          desc.flags       |= DSDESC_PIXELFORMAT;
          desc.pixelformat  = dest_format;
     }

     if (dest_resize)
          desc.flags |= DSDESC_WIDTH | DSDESC_HEIGHT;

     dfb->SetCooperativeLevel( dfb, DFSCL_FULLSCREEN );

     /* Create a primary surface. */
     ret = dfb->CreateSurface( dfb, &desc, &dest );
     if (ret) {
          D_DERROR( ret, "DFBTest/Blit: IDirectFB::CreateSurface() failed!\n" );
          goto out;
     }

     dest->GetSize( dest, &desc.width, &desc.height );
     dest->GetPixelFormat( dest, &desc.pixelformat );

     D_INFO( "DFBTest/Blit: Destination is %dx%d using %s\n",
             desc.width, desc.height, dfb_pixelformat_name(desc.pixelformat) );

     for (i=0; i<100000; i++) {
          int j,n = rand()%100;

          for (j=0; j<n; j++) {
               switch (rand()%3) {
                    case 0:
                         dest->SetDrawingFlags( dest, rand() & (DSDRAW_BLEND) );
                         dest->FillRectangle( dest, rand()%100, rand()%100, rand()%100, rand()%100 );
                         break;

                    case 1:
                         dest->SetBlittingFlags( dest, rand() & (DSBLIT_BLEND_ALPHACHANNEL |
                                                                 DSBLIT_BLEND_COLORALPHA   |
                                                                 DSBLIT_COLORIZE           |
                                                                 DSBLIT_ROTATE90) );
                         dest->Blit( dest, source, NULL, rand()%100, rand()%100 );
                         break;

                    case 2:
                         dest->SetBlittingFlags( dest, rand() & (DSBLIT_BLEND_ALPHACHANNEL |
                                                                 DSBLIT_BLEND_COLORALPHA   |
                                                                 DSBLIT_COLORIZE           |
                                                                 DSBLIT_ROTATE90) );
                         dest->StretchBlit( dest, source, NULL, NULL );
                         break;
               }
          }

          dfb->WaitIdle( dfb );

          dest->Flip( dest, NULL, DSFLIP_NONE );
     }

out:
     if (dest)
          dest->Release( dest );

     if (source)
          source->Release( source );

     if (provider)
          provider->Release( provider );

     /* Shutdown DirectFB. */
     dfb->Release( dfb );

     return ret;
}

int testing_singlecore() {
    IDirectFB *dfb = NULL;
    IDirectFBSurface *surface = NULL;
    DFBSurfaceDescription dsc;
    DFBSurfaceCapabilities  caps;
    int width, height;
  	DFBSurfacePixelFormat p_format;
    int i;


    DFBCHECK(DirectFBInit(NULL, NULL));
    DFBCHECK(DirectFBCreate(&dfb));
    push_release(dfb, dfb->Release);

    DFBCHECK(dfb->SetCooperativeLevel (dfb, DFSCL_FULLSCREEN));
    dsc.flags = DSDESC_CAPS;
    dsc.caps  = DSCAPS_PRIMARY | DSCAPS_FLIPPING;
    DFBCHECK (dfb->CreateSurface( dfb, &dsc, &surface ));
    push_release(surface, surface->Release);

    DFBCHECK(surface->GetCapabilities(surface, &caps));

    if (caps & DSCAPS_PRIMARY) {
        printf("Surface Primary\n");
    }
    if (caps & DSCAPS_SYSTEMONLY) {
        printf("Surface SystemOnly\n");
    }
    if (caps & DSCAPS_VIDEOONLY) {
        printf("Surface VideoOnly\n");
    }
    if (caps & DSCAPS_DOUBLE) {
        printf("Surface Double buffered\n");
    }
    if (caps & DSCAPS_SUBSURFACE) {
        printf("Surface is a sub surface\n");
    }
    if (caps & DSCAPS_INTERLACED) {
        printf("Surface is Interlaced\n");
    }
    if (caps & DSCAPS_SEPARATED) {
        printf("Surface is separated\n");
    }
    if (caps & DSCAPS_STATIC_ALLOC) {
        printf("Surface is static alloc\n");
    }
    if (caps & DSCAPS_TRIPLE) {
        printf("Surface is triple buffered\n");
    }
    if (caps & DSCAPS_PREMULTIPLIED) {
        printf("Surface stores premiltiplied alpha\n");
    }
    if (caps & DSCAPS_DEPTH) {
        printf("Surface has a depth buffer\n");
    }
    DFBCHECK(surface->GetSize(surface, &width, &height));
    printf("Surface size: %dx%d\n", width, height);


    DFBCHECK(surface->GetPixelFormat(surface, &p_format));
    for(i = 0; pformat_names[i].format; i++) {
        if (pformat_names[i].format == p_format) {
            printf("Surface pixelformat: %s\n", pformat_names[i].name);
        }
    }

    release_all();
    return 0;

}

int get_display_layer_surface() {
    int i;
    IDirectFB *dfb = NULL;
    IDirectFBSurface *surface = NULL;
    DFBSurfaceCapabilities  caps;
    IDirectFBDisplayLayer   *layer   = NULL;
    int width, height;
  	DFBSurfacePixelFormat p_format;

    DFBCHECK(DirectFBInit(NULL, NULL));

    DFBCHECK(DirectFBCreate(&dfb));
    push_release(dfb, dfb->Release);

    DFBCHECK(dfb->GetDisplayLayer(dfb, DLID_PRIMARY, &layer));
    push_release(layer, layer->Release);

    DFBCHECK(layer->SetCooperativeLevel(layer, DLSCL_EXCLUSIVE));
    DFBCHECK(layer->GetSurface(layer, &surface));
    push_release(surface, surface->Release);

    DFBCHECK(surface->GetCapabilities(surface, &caps));

    if (caps & DSCAPS_PRIMARY) {
        printf("Surface Primary\n");
    }
    if (caps & DSCAPS_SYSTEMONLY) {
        printf("Surface SystemOnly\n");
    }
    if (caps & DSCAPS_VIDEOONLY) {
        printf("Surface VideoOnly\n");
    }
    if (caps & DSCAPS_DOUBLE) {
        printf("Surface Double buffered\n");
    }
    if (caps & DSCAPS_SUBSURFACE) {
        printf("Surface is a sub surface\n");
    }
    if (caps & DSCAPS_INTERLACED) {
        printf("Surface is Interlaced\n");
    }
    if (caps & DSCAPS_SEPARATED) {
        printf("Surface is separated\n");
    }
    if (caps & DSCAPS_STATIC_ALLOC) {
        printf("Surface is static alloc\n");
    }
    if (caps & DSCAPS_TRIPLE) {
        printf("Surface is triple buffered\n");
    }
    if (caps & DSCAPS_PREMULTIPLIED) {
        printf("Surface stores premiltiplied alpha\n");
    }
    if (caps & DSCAPS_DEPTH) {
        printf("Surface has a depth buffer\n");
    }
    DFBCHECK(surface->GetSize(surface, &width, &height));
    printf("Surface size: %dx%d\n", width, height);


    DFBCHECK(surface->GetPixelFormat(surface, &p_format));
    for(i = 0; pformat_names[i].format; i++) {
        if (pformat_names[i].format == p_format) {
            printf("Surface pixelformat: %s\n", pformat_names[i].name);
        }
    }

    release_all();
    return 0;


}

DFBResult
GetConfigAttribs::eglGetConfigAttribs( EGL::Display        &display,
                                       EGLNativePixmapType  native,
                                       EGLint              *attribs,
                                       EGLint               max )
{
     D_DEBUG_AT( DFBEGL_GetConfigAttribs, "%s( display %p, native %p, attribs %p, max %d )\n", __FUNCTION__, &display, native, attribs, max );

     if (!attribs)
          return DFB_INVARG;

     DFB_EGL_ATTRIB_LIST_DEBUG_AT( DFBEGL_GetConfigAttribs, attribs );

     IDirectFBSurface *surface = (IDirectFBSurface *) native;

     for (EGLint *v=attribs; *v != EGL_NONE; v+=2) {
          if (max > 0 && v-attribs >= max) {
               D_DEBUG_AT( DFBEGL_GetConfigAttribs, "  -> max (%d) reached (%ld)\n", max, v-attribs );
               break;
          }

          EGLint                attribute = v[0];
          EGLint                value     = v[1];
          DFBSurfacePixelFormat format;
          DFBDimension          size;

          D_DEBUG_AT( DFBEGL_GetConfigAttribs, "  -> [%ld] 0x%04x '%s'  <- %d (0x%08x)\n", v-attribs, attribute, **EGLInt(attribute), value, value );

          switch (attribute) {
          case EGL_BUFFER_SIZE:
               surface->GetPixelFormat( surface, &format );
               value = DFB_COLOR_BITS_PER_PIXEL( format );
               break;

          case EGL_ALPHA_SIZE:
               surface->GetPixelFormat( surface, &format );
               value = DFB_ALPHA_BITS_PER_PIXEL( format );
               break;

          case EGL_BLUE_SIZE:
          case EGL_GREEN_SIZE:
          case EGL_RED_SIZE:
               surface->GetPixelFormat( surface, &format );
               value = DFB_COLOR_BITS_PER_PIXEL( format ) / 3;//FIXME
               break;

          //case EGL_DEPTH_SIZE:
          //case EGL_STENCIL_SIZE:
          //case EGL_RENDERABLE_TYPE:

          case EGL_SURFACE_TYPE:
               value = EGL_WINDOW_BIT;  // FIXME
               break;

          case EGL_WIDTH:     // keep? not a config attribute actually
               surface->GetSize( surface, &size.w, &size.h );
               value = size.w;
               break;

          case EGL_HEIGHT:    // keep? not a config attribute actually
               surface->GetSize( surface, &size.w, &size.h );
               value = size.h;
               break;

          default:
               D_DEBUG_AT( DFBEGL_GetConfigAttribs, "  -> UNRECOGNIZED!!!\n" );
               continue;
          }

          D_DEBUG_AT( DFBEGL_GetConfigAttribs, "            => %d (0x%08x)\n", value, value );

          v[1] = value;
     }

     D_DEBUG_AT( DFBEGL_GetConfigAttribs, " --> DONE -------------\n" );

     DFB_EGL_ATTRIB_LIST_DEBUG_AT( DFBEGL_GetConfigAttribs, attribs );

     return DFB_OK;
}