2ca79399b9
since the transparent region hint really depends on the content of the window containing the SurfaceView (it's calculated by the view hierarchy based on overlapping views), it makes sense to latch it only when the content of the window (the app) changes. This should help fixing drawing artifacts when changing the layout of a window containing a SurfaceView. Bug: 8511430 Change-Id: Ic3aa668495293cb4d82a2cd7dcf3b6a337287678
398 lines
12 KiB
C++
398 lines
12 KiB
C++
/*
|
|
* 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_H
|
|
#define ANDROID_LAYER_H
|
|
|
|
#include <stdint.h>
|
|
#include <sys/types.h>
|
|
|
|
#include <EGL/egl.h>
|
|
#include <EGL/eglext.h>
|
|
#include <GLES/gl.h>
|
|
#include <GLES/glext.h>
|
|
|
|
#include <utils/RefBase.h>
|
|
#include <utils/String8.h>
|
|
#include <utils/Timers.h>
|
|
|
|
#include <ui/GraphicBuffer.h>
|
|
#include <ui/PixelFormat.h>
|
|
#include <ui/Region.h>
|
|
|
|
#include <gui/ISurfaceComposerClient.h>
|
|
|
|
#include <private/gui/LayerState.h>
|
|
|
|
#include "FrameTracker.h"
|
|
#include "Client.h"
|
|
#include "SurfaceFlinger.h"
|
|
#include "SurfaceFlingerConsumer.h"
|
|
#include "SurfaceTextureLayer.h"
|
|
#include "Transform.h"
|
|
|
|
#include "DisplayHardware/HWComposer.h"
|
|
|
|
namespace android {
|
|
|
|
// ---------------------------------------------------------------------------
|
|
|
|
class Client;
|
|
class DisplayDevice;
|
|
class GraphicBuffer;
|
|
class SurfaceFlinger;
|
|
class GLExtensions;
|
|
|
|
// ---------------------------------------------------------------------------
|
|
|
|
/*
|
|
* A new BufferQueue and a new SurfaceFlingerConsumer are created when the
|
|
* Layer is first referenced.
|
|
*
|
|
* This also implements onFrameAvailable(), which notifies SurfaceFlinger
|
|
* that new data has arrived.
|
|
*/
|
|
class Layer : public SurfaceFlingerConsumer::FrameAvailableListener {
|
|
static int32_t sSequence;
|
|
|
|
public:
|
|
mutable bool contentDirty;
|
|
// regions below are in window-manager space
|
|
Region visibleRegion;
|
|
Region coveredRegion;
|
|
Region visibleNonTransparentRegion;
|
|
int32_t sequence;
|
|
|
|
enum { // flags for doTransaction()
|
|
eDontUpdateGeometryState = 0x00000001,
|
|
eVisibleRegion = 0x00000002,
|
|
};
|
|
|
|
struct Geometry {
|
|
uint32_t w;
|
|
uint32_t h;
|
|
Rect crop;
|
|
inline bool operator ==(const Geometry& rhs) const {
|
|
return (w == rhs.w && h == rhs.h && crop == rhs.crop);
|
|
}
|
|
inline bool operator !=(const Geometry& rhs) const {
|
|
return !operator ==(rhs);
|
|
}
|
|
};
|
|
|
|
struct State {
|
|
Geometry active;
|
|
Geometry requested;
|
|
uint32_t z;
|
|
uint32_t layerStack;
|
|
uint8_t alpha;
|
|
uint8_t flags;
|
|
uint8_t reserved[2];
|
|
int32_t sequence; // changes when visible regions can change
|
|
Transform transform;
|
|
// the transparentRegion hint is a bit special, it's latched only
|
|
// when we receive a buffer -- this is because it's "content"
|
|
// dependent.
|
|
Region activeTransparentRegion;
|
|
Region requestedTransparentRegion;
|
|
};
|
|
|
|
class LayerMesh {
|
|
friend class Layer;
|
|
GLfloat mVertices[4][2];
|
|
size_t mNumVertices;
|
|
public:
|
|
LayerMesh() :
|
|
mNumVertices(4) {
|
|
}
|
|
GLfloat const* getVertices() const {
|
|
return &mVertices[0][0];
|
|
}
|
|
size_t getVertexCount() const {
|
|
return mNumVertices;
|
|
}
|
|
};
|
|
|
|
// -----------------------------------------------------------------------
|
|
|
|
Layer(SurfaceFlinger* flinger, const sp<Client>& client,
|
|
const String8& name, uint32_t w, uint32_t h, uint32_t flags);
|
|
virtual ~Layer();
|
|
|
|
// the this layer's size and format
|
|
status_t setBuffers(uint32_t w, uint32_t h, PixelFormat format, uint32_t flags);
|
|
|
|
// modify current state
|
|
bool setPosition(float x, float 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& transparent);
|
|
bool setFlags(uint8_t flags, uint8_t mask);
|
|
bool setCrop(const Rect& crop);
|
|
bool setLayerStack(uint32_t layerStack);
|
|
|
|
void commitTransaction();
|
|
|
|
uint32_t getTransactionFlags(uint32_t flags);
|
|
uint32_t setTransactionFlags(uint32_t flags);
|
|
|
|
void computeGeometry(const sp<const DisplayDevice>& hw, LayerMesh* mesh) const;
|
|
Rect computeBounds() const;
|
|
|
|
sp<IBinder> getHandle();
|
|
sp<BufferQueue> getBufferQueue() const;
|
|
String8 getName() const;
|
|
|
|
// -----------------------------------------------------------------------
|
|
|
|
virtual const char* getTypeId() const { return "Layer"; }
|
|
|
|
virtual void setGeometry(const sp<const DisplayDevice>& hw,
|
|
HWComposer::HWCLayerInterface& layer);
|
|
virtual void setPerFrameData(const sp<const DisplayDevice>& hw,
|
|
HWComposer::HWCLayerInterface& layer);
|
|
virtual void setAcquireFence(const sp<const DisplayDevice>& hw,
|
|
HWComposer::HWCLayerInterface& layer);
|
|
|
|
/*
|
|
* called after page-flip
|
|
*/
|
|
virtual void onLayerDisplayed(const sp<const DisplayDevice>& hw,
|
|
HWComposer::HWCLayerInterface* layer);
|
|
|
|
/*
|
|
* called before composition.
|
|
* returns true if the layer has pending updates.
|
|
*/
|
|
virtual bool onPreComposition();
|
|
|
|
/*
|
|
* called after composition.
|
|
*/
|
|
virtual void onPostComposition();
|
|
|
|
/*
|
|
* 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 sp<const DisplayDevice>& hw, const Region& clip) const;
|
|
virtual void draw(const sp<const DisplayDevice>& hw);
|
|
|
|
/*
|
|
* onDraw - draws the surface.
|
|
*/
|
|
virtual void onDraw(const sp<const DisplayDevice>& hw, const Region& clip) const;
|
|
|
|
/*
|
|
* needsLinearFiltering - true if this surface's state requires filtering
|
|
*/
|
|
virtual bool needsFiltering(const sp<const DisplayDevice>& hw) const;
|
|
|
|
/*
|
|
* 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 corresponds to any area of the surface that is covered
|
|
* (transparently or not) by another surface.
|
|
*/
|
|
virtual void setCoveredRegion(const Region& coveredRegion);
|
|
|
|
/*
|
|
* setVisibleNonTransparentRegion - called when the visible and
|
|
* non-transparent region changes.
|
|
*/
|
|
virtual void setVisibleNonTransparentRegion(const Region&
|
|
visibleNonTransparentRegion);
|
|
|
|
/*
|
|
* latchBuffer - 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 Region latchBuffer(bool& recomputeVisibleRegions);
|
|
|
|
/*
|
|
* isOpaque - true if this surface is opaque
|
|
*/
|
|
virtual bool isOpaque() const;
|
|
|
|
/*
|
|
* isSecure - true if this surface is secure, that is if it prevents
|
|
* screenshots or VNC servers.
|
|
*/
|
|
virtual bool isSecure() const { return mSecure; }
|
|
|
|
/*
|
|
* isProtected - true if the layer may contain protected content in the
|
|
* GRALLOC_USAGE_PROTECTED sense.
|
|
*/
|
|
virtual bool isProtected() const;
|
|
|
|
/*
|
|
* isVisible - true if this layer is visible, false otherwise
|
|
*/
|
|
virtual bool isVisible() const;
|
|
|
|
/*
|
|
* isFixedSize - true if content has a fixed size
|
|
*/
|
|
virtual bool isFixedSize() const;
|
|
|
|
/*
|
|
* called with the state lock when the surface is removed from the
|
|
* current list
|
|
*/
|
|
virtual void onRemoved();
|
|
|
|
|
|
// Updates the transform hint in our SurfaceFlingerConsumer to match
|
|
// the current orientation of the display device.
|
|
virtual void updateTransformHint(const sp<const DisplayDevice>& hw) const;
|
|
|
|
/*
|
|
* returns the rectangle that crops the content of the layer and scales it
|
|
* to the layer's size.
|
|
*/
|
|
virtual Rect getContentCrop() const;
|
|
|
|
/*
|
|
* returns the transform bits (90 rotation / h-flip / v-flip) of the
|
|
* layer's content
|
|
*/
|
|
virtual uint32_t getContentTransform() const;
|
|
|
|
// -----------------------------------------------------------------------
|
|
|
|
void clearWithOpenGL(const sp<const DisplayDevice>& hw, const Region& clip) const;
|
|
void setFiltering(bool filtering);
|
|
bool getFiltering() const;
|
|
|
|
// only for debugging
|
|
inline const sp<GraphicBuffer>& getActiveBuffer() const { return mActiveBuffer; }
|
|
|
|
inline const State& drawingState() const { return mDrawingState; }
|
|
inline const State& currentState() const { return mCurrentState; }
|
|
inline State& currentState() { return mCurrentState; }
|
|
|
|
|
|
/* always call base class first */
|
|
virtual void dump(String8& result, char* scratch, size_t size) const;
|
|
virtual void shortDump(String8& result, char* scratch, size_t size) const;
|
|
virtual void dumpStats(String8& result, char* buffer, size_t SIZE) const;
|
|
virtual void clearStats();
|
|
|
|
protected:
|
|
// constant
|
|
sp<SurfaceFlinger> mFlinger;
|
|
|
|
virtual void onFirstRef();
|
|
|
|
/*
|
|
* Trivial class, used to ensure that mFlinger->onLayerDestroyed(mLayer)
|
|
* is called.
|
|
*/
|
|
class LayerCleaner {
|
|
sp<SurfaceFlinger> mFlinger;
|
|
wp<Layer> mLayer;
|
|
protected:
|
|
~LayerCleaner();
|
|
public:
|
|
LayerCleaner(const sp<SurfaceFlinger>& flinger, const sp<Layer>& layer);
|
|
};
|
|
|
|
|
|
private:
|
|
// Interface implementation for SurfaceFlingerConsumer::FrameAvailableListener
|
|
virtual void onFrameAvailable();
|
|
|
|
|
|
uint32_t getEffectiveUsage(uint32_t usage) const;
|
|
Rect computeCrop(const sp<const DisplayDevice>& hw) const;
|
|
bool isCropped() const;
|
|
static bool getOpacityForFormat(uint32_t format);
|
|
|
|
// drawing
|
|
void clearWithOpenGL(const sp<const DisplayDevice>& hw, const Region& clip,
|
|
GLclampf r, GLclampf g, GLclampf b, GLclampf alpha) const;
|
|
void drawWithOpenGL(const sp<const DisplayDevice>& hw, const Region& clip) const;
|
|
|
|
|
|
// -----------------------------------------------------------------------
|
|
|
|
// constants
|
|
sp<SurfaceFlingerConsumer> mSurfaceFlingerConsumer;
|
|
GLuint mTextureName;
|
|
bool mPremultipliedAlpha;
|
|
String8 mName;
|
|
mutable bool mDebug;
|
|
PixelFormat mFormat;
|
|
const GLExtensions& mGLExtensions;
|
|
bool mOpaqueLayer;
|
|
|
|
// these are protected by an external lock
|
|
State mCurrentState;
|
|
State mDrawingState;
|
|
volatile int32_t mTransactionFlags;
|
|
|
|
// thread-safe
|
|
volatile int32_t mQueuedFrames;
|
|
FrameTracker mFrameTracker;
|
|
|
|
// main thread
|
|
sp<GraphicBuffer> mActiveBuffer;
|
|
Rect mCurrentCrop;
|
|
uint32_t mCurrentTransform;
|
|
uint32_t mCurrentScalingMode;
|
|
bool mCurrentOpacity;
|
|
bool mRefreshPending;
|
|
bool mFrameLatencyNeeded;
|
|
// Whether filtering is forced on or not
|
|
bool mFiltering;
|
|
// Whether filtering is needed b/c of the drawingstate
|
|
bool mNeedsFiltering;
|
|
|
|
// page-flip thread (currently main thread)
|
|
bool mSecure; // no screenshots
|
|
bool mProtectedByApp; // application requires protected path to external sink
|
|
|
|
// protected by mLock
|
|
mutable Mutex mLock;
|
|
// Set to true once we've returned this surface's handle
|
|
mutable bool mHasSurface;
|
|
const wp<Client> mClientRef;
|
|
};
|
|
|
|
// ---------------------------------------------------------------------------
|
|
|
|
}; // namespace android
|
|
|
|
#endif // ANDROID_LAYER_H
|