when hw_get_module is called the hardware.c forms the complete path to the
library based on certain predefined values which by default comes to
/system/lib/hw/overlay.default.so
Another things is in the sample
programs*frameworks/base/libs/surfaceflinger/tests/overlay/
*
*
sp<OverlayRef> ref = isurface->createOverlay(320, 240,
PIXEL_FORMAT_RGB_565);
*
ref is used in sp<Overlay> overlay = new Overlay(ref);
which comes to the code give below.
if (overlayRef != 0) {
if (hw_get_module(OVERLAY_HARDWARE_MODULE_ID, &module) == 0) {
if (overlay_data_open(module, &mOverlayData) == NO_ERROR) {
mStatus = mOverlayData->initialize(mOverlayData,
overlayRef->mOverlayHandle);
}
However the condition is failing if (overlayRef != 0) and hence overlay
object creation fails.
Any idea on what is going wrong ?
the function isurface->createOverlay
comes to
remote()->transact(CREATE_OVERLAY, data, &reply); in
file*frameworks/base/libs/ui/ISurface.cpp
*
from here I was not able to trace where the control is going to.
On Mon, May 10, 2010 at 8:09 PM, Deva R <[email protected]> wrote:
>
> when overlay is created, it walks through overlay hardware module
>
> > if (overlayRef != 0) {
> > if (hw_get_module(OVERLAY_HARDWARE_MODULE_ID, &module) == 0) {
> > if (overlay_data_open(module, &mOverlayData) == NO_ERROR) {
> > mStatus = mOverlayData->initialize(mOverlayData,
> > overlayRef->mOverlayHandle);
> > }
>
>
>
> so, instead of generating generic liboverlay.so, its better to generate
> module with hardware name appeneded.
>
> you can update your overlay -> Android.mk module name as below..
> LOCAL_MODULE := overlay.$(TARGET_BOARD_PLATFORM)
>
>
> Not sure if you leave it as just liboverlay.so, it will work or not..
>
>
>
> On Fri, May 7, 2010 at 7:18 PM, Sambhav <[email protected]> wrote:
>
>> Hi,
>>
>> By default overlay module at *hardware\libhardware\modules\overlay* is a
>> skeleton implementation.
>> I am calling the V4L2 driver calls from these functions.
>> I have build the module - liboverlay.so
>>
>> Where should I indicate that Overlay calls made from *
>> frameworks/base/libs/ui/Overlay.cpp* to use the services from *liboverlay.so
>> *created above.
>>
>> Regards,
>> Sambhav
>>
>>
>> --
>> unsubscribe:
>> [email protected]<android-porting%[email protected]>
>> website: http://groups.google.com/group/android-porting
>>
>
>
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