auto import from //depot/cupcake/@135843
diff --git a/libs/surfaceflinger/LayerBase.h b/libs/surfaceflinger/LayerBase.h
new file mode 100644
index 0000000..a020f44
--- /dev/null
+++ b/libs/surfaceflinger/LayerBase.h
@@ -0,0 +1,356 @@
+/*
+ * 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_LAYER_BASE_H
+#define ANDROID_LAYER_BASE_H
+
+#include <stdint.h>
+#include <sys/types.h>
+
+#include <private/ui/LayerState.h>
+
+#include <ui/Region.h>
+#include <ui/Overlay.h>
+
+#include <pixelflinger/pixelflinger.h>
+
+#include "Transform.h"
+
+namespace android {
+
+// ---------------------------------------------------------------------------
+
+class SurfaceFlinger;
+class DisplayHardware;
+class GraphicPlane;
+class Client;
+
+// ---------------------------------------------------------------------------
+
+class LayerBase
+{
+ // poor man's dynamic_cast below
+ template<typename T>
+ struct getTypeInfoOfAnyType {
+ static uint32_t get() { return T::typeInfo; }
+ };
+
+ template<typename T>
+ struct getTypeInfoOfAnyType<T*> {
+ static uint32_t get() { return getTypeInfoOfAnyType<T>::get(); }
+ };
+
+public:
+ static const uint32_t typeInfo;
+ static const char* const typeID;
+ virtual char const* getTypeID() const { return typeID; }
+ virtual uint32_t getTypeInfo() const { return typeInfo; }
+
+ template<typename T>
+ static T dynamicCast(LayerBase* base) {
+ uint32_t mostDerivedInfo = base->getTypeInfo();
+ uint32_t castToInfo = getTypeInfoOfAnyType<T>::get();
+ if ((mostDerivedInfo & castToInfo) == castToInfo)
+ return static_cast<T>(base);
+ return 0;
+ }
+
+
+ static Vector<GLuint> deletedTextures;
+
+ LayerBase(SurfaceFlinger* flinger, DisplayID display);
+ virtual ~LayerBase();
+
+ DisplayID dpy;
+ mutable bool contentDirty;
+ Region visibleRegionScreen;
+ Region transparentRegionScreen;
+ Region coveredRegionScreen;
+
+ struct State {
+ uint32_t w;
+ uint32_t h;
+ uint32_t z;
+ uint8_t alpha;
+ uint8_t flags;
+ uint8_t reserved[2];
+ int32_t sequence; // changes when visible regions can change
+ uint32_t tint;
+ Transform transform;
+ Region transparentRegion;
+ };
+
+ // modify current state
+ bool setPosition(int32_t x, int32_t y);
+ bool setLayer(uint32_t z);
+ bool setSize(uint32_t w, uint32_t h);
+ bool setAlpha(uint8_t alpha);
+ bool setMatrix(const layer_state_t::matrix22_t& matrix);
+ bool setTransparentRegionHint(const Region& opaque);
+ bool setFlags(uint8_t flags, uint8_t mask);
+
+ void commitTransaction(bool skipSize);
+ bool requestTransaction();
+ void forceVisibilityTransaction();
+
+ uint32_t getTransactionFlags(uint32_t flags);
+ uint32_t setTransactionFlags(uint32_t flags);
+
+ Rect visibleBounds() const;
+ void drawRegion(const Region& reg) const;
+
+ void invalidate();
+
+ /**
+ * draw - performs some global clipping optimizations
+ * and calls onDraw().
+ * Typically this method is not overridden, instead implement onDraw()
+ * to perform the actual drawing.
+ */
+ virtual void draw(const Region& clip) const;
+
+ /**
+ * onDraw - draws the surface.
+ */
+ virtual void onDraw(const Region& clip) const = 0;
+
+ /**
+ * initStates - called just after construction
+ */
+ virtual void initStates(uint32_t w, uint32_t h, uint32_t flags);
+
+ /**
+ * setSizeChanged - called when the *current* state's size is changed.
+ */
+ virtual void setSizeChanged(uint32_t w, uint32_t h);
+
+ /**
+ * doTransaction - process the transaction. This is a good place to figure
+ * out which attributes of the surface have changed.
+ */
+ virtual uint32_t doTransaction(uint32_t transactionFlags);
+
+ /**
+ * setVisibleRegion - called to set the new visible region. This gives
+ * a chance to update the new visible region or record the fact it changed.
+ */
+ virtual void setVisibleRegion(const Region& visibleRegion);
+
+ /**
+ * setCoveredRegion - called when the covered region changes. The covered
+ * region correspond to any area of the surface that is covered
+ * (transparently or not) by another surface.
+ */
+ virtual void setCoveredRegion(const Region& coveredRegion);
+
+ /**
+ * getPhysicalSize - returns the physical size of the drawing state of
+ * the surface. If the surface is backed by a bitmap, this is the size of
+ * the bitmap (as opposed to the size of the drawing state).
+ */
+ virtual Point getPhysicalSize() const;
+
+ /**
+ * validateVisibility - cache a bunch of things
+ */
+ virtual void validateVisibility(const Transform& globalTransform);
+
+ /**
+ * lockPageFlip - called each time the screen is redrawn and returns whether
+ * the visible regions need to be recomputed (this is a fairly heavy
+ * operation, so this should be set only if needed). Typically this is used
+ * to figure out if the content or size of a surface has changed.
+ */
+ virtual void lockPageFlip(bool& recomputeVisibleRegions);
+
+ /**
+ * unlockPageFlip - called each time the screen is redrawn. updates the
+ * final dirty region wrt the planeTransform.
+ * At this point, all visible regions, surface position and size, etc... are
+ * correct.
+ */
+ virtual void unlockPageFlip(const Transform& planeTransform, Region& outDirtyRegion);
+
+ /**
+ * finishPageFlip - called after all surfaces have drawn.
+ */
+ virtual void finishPageFlip();
+
+ /**
+ * needsBlending - true if this surface needs blending
+ */
+ virtual bool needsBlending() const { return false; }
+
+ /**
+ * transformed -- true is this surface needs a to be transformed
+ */
+ virtual bool transformed() const { return mTransformed; }
+
+ /**
+ * isSecure - true if this surface is secure, that is if it prevents
+ * screenshots or vns servers.
+ */
+ virtual bool isSecure() const { return false; }
+
+ enum { // flags for doTransaction()
+ eVisibleRegion = 0x00000002,
+ eRestartTransaction = 0x00000008
+ };
+
+
+ inline const State& drawingState() const { return mDrawingState; }
+ inline const State& currentState() const { return mCurrentState; }
+ inline State& currentState() { return mCurrentState; }
+
+ static int compareCurrentStateZ(LayerBase*const* layerA, LayerBase*const* layerB) {
+ return layerA[0]->currentState().z - layerB[0]->currentState().z;
+ }
+
+ int32_t getOrientation() const { return mOrientation; }
+ int tx() const { return mLeft; }
+ int ty() const { return mTop; }
+
+protected:
+ const GraphicPlane& graphicPlane(int dpy) const;
+ GraphicPlane& graphicPlane(int dpy);
+
+ GLuint createTexture() const;
+
+ void drawWithOpenGL(const Region& clip,
+ GLint textureName,
+ const GGLSurface& surface,
+ int transform = 0) const;
+
+ void clearWithOpenGL(const Region& clip) const;
+
+ void loadTexture(const Region& dirty,
+ GLint textureName, const GGLSurface& t,
+ GLuint& textureWidth, GLuint& textureHeight) const;
+
+ bool canUseCopybit() const;
+
+ SurfaceFlinger* mFlinger;
+ uint32_t mFlags;
+
+ // cached during validateVisibility()
+ bool mTransformed;
+ int32_t mOrientation;
+ GLfixed mVertices[4][2];
+ Rect mTransformedBounds;
+ bool mCanUseCopyBit;
+ int mLeft;
+ int mTop;
+
+ // these are protected by an external lock
+ State mCurrentState;
+ State mDrawingState;
+ volatile int32_t mTransactionFlags;
+
+ // don't change, don't need a lock
+ bool mPremultipliedAlpha;
+
+ // only read
+ const uint32_t mIdentity;
+
+ // atomic
+ volatile int32_t mInvalidate;
+
+
+private:
+ void validateTexture(GLint textureName) const;
+ static int32_t sIdentity;
+};
+
+
+// ---------------------------------------------------------------------------
+
+class LayerBaseClient : public LayerBase
+{
+public:
+ class Surface;
+ static const uint32_t typeInfo;
+ static const char* const typeID;
+ virtual char const* getTypeID() const { return typeID; }
+ virtual uint32_t getTypeInfo() const { return typeInfo; }
+
+ LayerBaseClient(SurfaceFlinger* flinger, DisplayID display,
+ Client* client, int32_t i);
+ virtual ~LayerBaseClient();
+
+
+ Client* const client;
+ layer_cblk_t* const lcblk;
+
+ inline int32_t clientIndex() const { return mIndex; }
+ int32_t serverIndex() const;
+
+ virtual sp<Surface> getSurface() const;
+
+ uint32_t getIdentity() const { return mIdentity; }
+
+ class Surface : public BnSurface
+ {
+ public:
+ Surface(SurfaceID id, int identity) {
+ mParams.token = id;
+ mParams.identity = identity;
+ }
+ Surface(SurfaceID id,
+ const sp<IMemoryHeap>& heap0,
+ const sp<IMemoryHeap>& heap1,
+ int identity)
+ {
+ mParams.token = id;
+ mParams.identity = identity;
+ mParams.heap[0] = heap0;
+ mParams.heap[1] = heap1;
+ }
+ virtual ~Surface() {
+ // TODO: We now have a point here were we can clean-up the
+ // client's mess.
+ // This is also where surface id should be recycled.
+ //LOGD("Surface %d, heaps={%p, %p} destroyed",
+ // mId, mHeap[0].get(), mHeap[1].get());
+ }
+
+ virtual void getSurfaceData(
+ ISurfaceFlingerClient::surface_data_t* params) const {
+ *params = mParams;
+ }
+
+ virtual status_t registerBuffers(const ISurface::BufferHeap& buffers)
+ { return INVALID_OPERATION; }
+ virtual void postBuffer(ssize_t offset) { }
+ virtual void unregisterBuffers() { };
+ virtual sp<OverlayRef> createOverlay(
+ uint32_t w, uint32_t h, int32_t format) {
+ return NULL;
+ };
+
+ private:
+ ISurfaceFlingerClient::surface_data_t mParams;
+ };
+
+private:
+ int32_t mIndex;
+
+};
+
+// ---------------------------------------------------------------------------
+
+}; // namespace android
+
+#endif // ANDROID_LAYER_BASE_H