get rid of ISurface

ISurface was only used to get the IGraphicBufferProducer from
a Layer. It's now replaced by a BBinder subclass / IBinder and
is only used as a handle to the surface, to both refer to it
and manage its life-time.

Also cleaned-up a bit the ISurfaceComposer interface and
"create layer" code path.

Change-Id: I68d0e02d57b862cffb31d5168c3bc10cea0906eb
diff --git a/include/gui/ISurface.h b/include/gui/ISurface.h
deleted file mode 100644
index 5a928f2..0000000
--- a/include/gui/ISurface.h
+++ /dev/null
@@ -1,62 +0,0 @@
-/*
- * Copyright (C) 2007 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#ifndef ANDROID_GUI_ISURFACE_H
-#define ANDROID_GUI_ISURFACE_H
-
-#include <stdint.h>
-#include <sys/types.h>
-
-#include <utils/Errors.h>
-#include <utils/RefBase.h>
-
-#include <binder/IInterface.h>
-
-#include <ui/PixelFormat.h>
-
-namespace android {
-
-class IGraphicBufferProducer;
-
-class ISurface : public IInterface
-{
-protected:
-    enum {
-        GET_SURFACE_TEXTURE = IBinder::FIRST_CALL_TRANSACTION,
-    };
-
-public: 
-    DECLARE_META_INTERFACE(Surface);
-
-    virtual sp<IGraphicBufferProducer> getSurfaceTexture() const = 0;
-};
-
-// ----------------------------------------------------------------------------
-
-class BnSurface : public BnInterface<ISurface>
-{
-public:
-    virtual status_t    onTransact( uint32_t code,
-                                    const Parcel& data,
-                                    Parcel* reply,
-                                    uint32_t flags = 0);
-};
-
-// ----------------------------------------------------------------------------
-
-}; // namespace android
-
-#endif // ANDROID_GUI_ISURFACE_H
diff --git a/include/gui/ISurfaceComposerClient.h b/include/gui/ISurfaceComposerClient.h
index 4afc860..cb9816f 100644
--- a/include/gui/ISurfaceComposerClient.h
+++ b/include/gui/ISurfaceComposerClient.h
@@ -27,11 +27,11 @@
 
 #include <ui/PixelFormat.h>
 
-#include <gui/ISurface.h>
-
 namespace android {
 // ----------------------------------------------------------------------------
 
+class IGraphicBufferProducer;
+
 class ISurfaceComposerClient : public IInterface
 {
 public:
@@ -55,9 +55,11 @@
     /*
      * Requires ACCESS_SURFACE_FLINGER permission
      */
-    virtual sp<ISurface> createSurface(
+    virtual status_t createSurface(
             const String8& name, uint32_t w, uint32_t h,
-            PixelFormat format, uint32_t flags) = 0;
+            PixelFormat format, uint32_t flags,
+            sp<IBinder>* handle,
+            sp<IGraphicBufferProducer>* gbp) = 0;
 
     /*
      * Requires ACCESS_SURFACE_FLINGER permission
diff --git a/include/gui/SurfaceControl.h b/include/gui/SurfaceControl.h
index f70888d..fe8eb6f 100644
--- a/include/gui/SurfaceControl.h
+++ b/include/gui/SurfaceControl.h
@@ -27,7 +27,6 @@
 #include <ui/PixelFormat.h>
 #include <ui/Region.h>
 
-#include <gui/ISurface.h>
 #include <gui/ISurfaceComposerClient.h>
 
 namespace android {
@@ -46,9 +45,11 @@
     static bool isValid(const sp<SurfaceControl>& surface) {
         return (surface != 0) && surface->isValid();
     }
+
     bool isValid() {
-        return mSurface!=0 && mClient!=0;
+        return mHandle!=0 && mClient!=0;
     }
+
     static bool isSameSurface(
             const sp<SurfaceControl>& lhs, const sp<SurfaceControl>& rhs);
         
@@ -82,7 +83,8 @@
 
     SurfaceControl(
             const sp<SurfaceComposerClient>& client,
-            const sp<ISurface>& surface);
+            const sp<IBinder>& handle,
+            const sp<IGraphicBufferProducer>& gbp);
 
     ~SurfaceControl();
 
@@ -90,7 +92,7 @@
     void destroy();
     
     sp<SurfaceComposerClient>   mClient;
-    sp<IBinder>                 mSurface;
+    sp<IBinder>                 mHandle;
     sp<IGraphicBufferProducer>  mGraphicBufferProducer;
     mutable Mutex               mLock;
     mutable sp<Surface>         mSurfaceData;