Hi, Chris
You can check "adb logcat". If surfacefringer fails to load overlay.*.so
(it's in /system/lib/hw), it means dream does not support hardware overlays.
I'm not familar with HDC dream. So I can't give you helpful advice up to
now.
Regards,
Jill
On Sat, Jun 20, 2009 at 12:43 AM, Chris Rutherford <
chrismrutherf...@googlemail.com> wrote:
>
> When I run this (test) code on the HDC dream I get null address for
> buffer and address. I can create the isurface and overlay ok (no
> segfaults).
>
> printf("buffer = %p\n", buffer); (prints buffer = 0x0)
> printf("address = %p\n", address); (prints address = 0x0)
>
> Is this because the dream does not support hardware overlays? What
> can I do to make this work?
>
>
> On Apr 30, 3:53 pm, "Jill.Zhou" <ruohong.z...@gmail.com> wrote:
> > After debug into SurfaceFringer, I found the following code can work
> > to set overlay position:
> >
> > sp<SurfaceComposerClient> client = new SurfaceComposerClient();
> >
> > // create pushbuffer surface
> > sp<Surface> surface = client->createSurface(getpid(), 0, 320,
> > 240,
> > PIXEL_FORMAT_UNKNOWN, ISurfaceComposer::ePushBuffers);
> >
> > // get to the isurface
> > sp<ISurface> isurface = Test::getISurface(surface);
> > printf("isurface = %p\n", isurface.get());
> >
> > // now request an overlay
> > sp<OverlayRef> ref = isurface->createOverlay(320, 240,
> > PIXEL_FORMAT_RGB_565);
> > sp<Overlay> overlay = new Overlay(ref);
> >
> > /* Code to set position */
> > client->openTransaction();
> > surface->setPosition(30, 30);
> > client->closeTransaction();
> >
> > /*
> > * here we can use the overlay API
> > */
> >
> > overlay_buffer_t buffer;
> > overlay->dequeueBuffer(&buffer);
> > printf("buffer = %p\n", buffer);
> >
> > void* address = overlay->getBufferAddress(buffer);
> > printf("address = %p\n", address);
> >
> > overlay->queueBuffer(buffer);
> >
>
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