Hi,
I am playing a video using native call(Not directfb). I created a primary
surface.and draw a image. When i clearing the image using FillRectangle i am
getting a black patch. I want to clear using transparency means on clear i
should able to see video rather than black patch. How can i achieve this?
Here is code snippet:-
/* Creating primary surface */
dsc.flags = DSDESC_CAPS | DSDESC_PIXELFORMAT;
dsc.pixelformat = DSPF_ARGB;
dsc.caps = DSCAPS_PRIMARY | DSCAPS_FLIPPING;
DFBCHECK (dfb->CreateSurface( dfb, &dsc, &pFrameBuffer ));
/* Drawing Image */
dfb->CreateImageProvider(dfb, img, &provider);
provider->GetSurfaceDescription(provider, &sDesc);
sDesc.flags = DSDESC_PIXELFORMAT | DSDESC_WIDTH | DSDESC_HEIGHT;
sDesc.width = 200;
sDesc.height = 200;
sDesc.pixelformat = DSPF_ARGB;
dfb->CreateSurface(dfb, &sDesc,&imgSurface);
imgSurface->Clear(imgSurface, 0x00, 0x00, 0x00, 0xFF);
provider->RenderTo(provider, imgSurface, NULL);
provider->Release(provider);
pFrameBuffer->SetBlittingFlags(pFrameBuffer,DSBLIT_BLEND_ALPHACHANNEL);
pFrameBuffer->SetPorterDuff(pFrameBuffer,DSPD_SRC_OVER);
pFrameBuffer->Blit(pFrameBuffer, imgSurface, NULL, 200, 200);
pFrameBuffer->SetBlittingFlags(pFrameBuffer,DSBLIT_NOFX);
pFrameBuffer->SetPorterDuff(pFrameBuffer , DSPD_NONE);
DFBCHECK(pFrameBuffer->Flip(pFrameBuffer, NULL,
DSFLIP_WAITFORSYNC));
DFBCHECK(pFrameBuffer->Flip(pFrameBuffer, NULL, 0));
/* Clear screen */
//pFrameBuffer->SetDrawingFlags(pFrameBuffer, DSDRAW_BLEND); //I
tried this also but success
//pFrameBuffer->SetPorterDuff(pFrameBuffer,DSPD_SRC_OVER);
DFBCHECK(pFrameBuffer->SetColor(pFrameBuffer,0xFF,0x00,0x00,0xFF));
DFBCHECK(pFrameBuffer->FillRectangle(pFrameBuffer, 200, 200, 200,
200));
DFBCHECK(pFrameBuffer->Flip(pFrameBuffer, NULL,
DSFLIP_WAITFORSYNC));
DFBCHECK(pFrameBuffer->Flip(pFrameBuffer, NULL, 0));
--
JOY
Never expect things to happen.. struggle and make them happen.
never expect yourself to be given a good value create a value of your own
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