Change the framework to use the new camera preview path.

This change makes the camera HAL interface take an ANativeWindow interface from
which all the camera preview buffers will be allocated.  The framework code
running in application processes now passes a Surface object rather than an
ISurface to the camera server via Binder when setting the preview surface.  The
camera server then forwards that Surface object (which implements the
ANativeWindow interface) to the camera HAL, which uses it to communicate with
SurfaceFlinger to allocate the camera preview buffers.

Change-Id: Ie438f721559cd7de5e4f848a26d96360dda07b5f
diff --git a/include/surfaceflinger/Surface.h b/include/surfaceflinger/Surface.h
index 28ab0fd..6fdd2ae 100644
--- a/include/surfaceflinger/Surface.h
+++ b/include/surfaceflinger/Surface.h
@@ -94,7 +94,7 @@
     friend class SurfaceComposerClient;
 
     // camera and camcorder need access to the ISurface binder interface for preview
-    friend class Camera;
+    friend class CameraService;
     friend class MediaRecorder;
     // mediaplayer needs access to ISurface for display
     friend class MediaPlayer;
@@ -173,7 +173,7 @@
      * (eventually this should go away and be replaced by proper APIs)
      */
     // camera and camcorder need access to the ISurface binder interface for preview
-    friend class Camera;
+    friend class CameraService;
     friend class MediaRecorder;
     // MediaPlayer needs access to ISurface for display
     friend class MediaPlayer;
@@ -310,4 +310,3 @@
 }; // namespace android
 
 #endif // ANDROID_SF_SURFACE_H
-
diff --git a/libs/surfaceflinger_client/SharedBufferStack.cpp b/libs/surfaceflinger_client/SharedBufferStack.cpp
index 156a7db..47ec78a 100644
--- a/libs/surfaceflinger_client/SharedBufferStack.cpp
+++ b/libs/surfaceflinger_client/SharedBufferStack.cpp
@@ -344,11 +344,6 @@
 {
     SharedBufferStack& stack( *mSharedStack );
 
-    if (stack.head == tail && stack.available == mNumBuffers) {
-        LOGW("dequeue: tail=%d, head=%d, avail=%d, queued=%d",
-                tail, stack.head, stack.available, stack.queued);
-    }
-
     RWLock::AutoRLock _rd(mLock);
 
     const nsecs_t dequeueTime = systemTime(SYSTEM_TIME_THREAD);
diff --git a/libs/surfaceflinger_client/Surface.cpp b/libs/surfaceflinger_client/Surface.cpp
index 5ab72cd..f524476 100644
--- a/libs/surfaceflinger_client/Surface.cpp
+++ b/libs/surfaceflinger_client/Surface.cpp
@@ -363,6 +363,13 @@
         height   = surface->mHeight;
         format   = surface->mFormat;
         flags    = surface->mFlags;
+    } else if (surface != 0 && surface->mSurface != 0) {
+        LOGW("Parceling invalid surface with non-NULL ISurface as NULL: "
+             "mSurface = %p, mIdentity = %d, mWidth = %d, mHeight = %d, "
+             "mFormat = %d, mFlags = 0x%08x, mInitCheck = %d",
+             surface->mSurface.get(), surface->mIdentity, surface->mWidth,
+             surface->mHeight, surface->mFormat, surface->mFlags,
+             surface->mInitCheck);
     }
     parcel->writeStrongBinder(sur!=0 ? sur->asBinder() : NULL);
     parcel->writeInt32(identity);
@@ -434,6 +441,9 @@
             mSharedBufferClient = new SharedBufferClient(
                     mClient.getSharedClient(), token, 2, mIdentity);
             mInitCheck = mClient.getSharedClient()->validate(token);
+        } else {
+            LOGW("Not initializing the shared buffer client because token = %d",
+                    token);
         }
     }
 }
diff --git a/services/surfaceflinger/SurfaceFlinger.cpp b/services/surfaceflinger/SurfaceFlinger.cpp
index af7c3bf..a78d9b9 100644
--- a/services/surfaceflinger/SurfaceFlinger.cpp
+++ b/services/surfaceflinger/SurfaceFlinger.cpp
@@ -1745,12 +1745,15 @@
 {
     int32_t name = NAME_NOT_FOUND;
     sp<Layer> layer(mFlinger->getLayer(sur));
-    if (layer == 0) return name;
+    if (layer == 0) {
+        return name;
+    }
 
     // if this layer already has a token, just return it
     name = layer->getToken();
-    if ((name >= 0) && (layer->getClient() == this))
+    if ((name >= 0) && (layer->getClient() == this)) {
         return name;
+    }
 
     name = 0;
     do {