unify SurfaceTexture and Surface

Add the concept of synchronous dequeueBuffer in SurfaceTexture
Implement {Surface|SurfaceTextureClient}::setSwapInterval()
Add SurfaceTexture logging
fix onFrameAvailable
diff --git a/services/surfaceflinger/SurfaceTextureLayer.h b/services/surfaceflinger/SurfaceTextureLayer.h
new file mode 100644
index 0000000..7faff54
--- /dev/null
+++ b/services/surfaceflinger/SurfaceTextureLayer.h
@@ -0,0 +1,55 @@
+/*
+ * Copyright (C) 2011 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_SURFACE_TEXTURE_LAYER_H
+#define ANDROID_SURFACE_TEXTURE_LAYER_H
+
+#include <stdlib.h>
+#include <stdint.h>
+#include <sys/types.h>
+
+#include <utils/Errors.h>
+#include <gui/SurfaceTexture.h>
+
+namespace android {
+// ---------------------------------------------------------------------------
+
+class Layer;
+
+class SurfaceTextureLayer : public SurfaceTexture
+{
+    wp<Layer> mLayer;
+    uint32_t mDefaultFormat;
+
+public:
+    SurfaceTextureLayer(GLuint tex, const sp<Layer>& layer);
+    ~SurfaceTextureLayer();
+
+    status_t setDefaultBufferSize(uint32_t w, uint32_t h);
+    status_t setDefaultBufferFormat(uint32_t format);
+
+public:
+    virtual status_t setBufferCount(int bufferCount);
+
+protected:
+    virtual status_t dequeueBuffer(int *buf, uint32_t w, uint32_t h,
+            uint32_t format, uint32_t usage);
+};
+
+// ---------------------------------------------------------------------------
+}; // namespace android
+
+#endif // ANDROID_SURFACE_TEXTURE_LAYER_H