[android-developers] Re: can not create Surface and ISurface successfully

[Dianne Hackborn]

Hi, please post these questions in one of the android platform groups such
as android-platform; this group is for developing with the SDK.

On Wed, Nov 19, 2008 at 11:21 PM, Ye Haomiao <[EMAIL PROTECTED]> wrote:

>
> hi, I try to use SurfaceComposerClient and SurfaceFlinger to create a
> Surface, but all failed, the point = null, can you help how to create
> a surface?
>
> when I try to sp<Surface> mysurface = client->createSurface(getpid(),
> 0, info.w , info.h,  info.pixelFormatInfo.format , 0);
> and sp<ISurface> myISurface = FlingerClient->createSurface
> (&param ,getpid(), 0, info.w , info.h, info.pixelFormatInfo.format,0);
>  all failed, the pointer return null
>
>
> ////////my code////////////////////
> sp<SurfaceComposerClient> client;
>    DisplayInfo  info;
>    uint32_t flags = 0x00000000;
>
>    client = new SurfaceComposerClient;
>    sp<IBinder> mybinder = client->connection();
>    client->openTransaction();
>    client->openGlobalTransaction();
>    ssize_t  number =  client->getNumberOfDisplays();
>    printf("number =%d \n", number);
>    client->getDisplayInfo(0,&info);
>    printf("w =%d  h=%d  format =%d \n", info.w,info.h,
> info.pixelFormatInfo.format);
>
>    w=100; h=100;
>
>    sp<Surface> mysurface = client->createSurface(getpid(), 0,
> info.w , info.h,  info.pixelFormatInfo.format , 0);
>    if(mysurface == NULL){
>        printf(" create surface failed ! \n");
>    }
>
>    sp<ISurfaceComposer> SurfaceFlinger = _get_surface_manager();
>    if(SurfaceFlinger == NULL)
>        printf("SurfaceFlinger == null\n");
>    sp<ISurfaceFlingerClient> FlingerClient = SurfaceFlinger-
> >createConnection();
>    if(FlingerClient == NULL)
>        printf("SurfaceFlingerclient == null\n");
>    ISurfaceFlingerClient::surface_data_t param;
>
>    sp<ISurface> myISurface = FlingerClient->createSurface
> (&param ,getpid(), 0, info.w , info.h, info.pixelFormatInfo.format,0);
>    if( myISurface == NULL)
>         printf(" myISurface == null\n");
>
> /////my output//////////////////////
> ./myclient
> Running in emulation - fallback to software codecs
> number =1
> w =320  h=480  format =4
>  create surface failed !
>  myISurface == null
> myclient quit
>
> >
>


-- 
Dianne Hackborn
Android framework engineer
[EMAIL PROTECTED]

Note: please don't send private questions to me, as I don't have time to
provide private support.  All such questions should be posted on public
forums, where I and others can see and answer them.

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