19957553cb
There is a new ANativeWindow::cancelBuffer() API that can be used to cancel any dequeued buffer, BEFORE it's been enqueued. The buffer is returned to the list of availlable buffers. dequeue and cancel are not mutually thread safe, they must be called from the same thread or external synchronization must be used. Change-Id: I86cc7985bace8b6a93ad2c75d2bef5c3c2cb4d61
318 lines
10 KiB
C++
318 lines
10 KiB
C++
/*
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* Copyright (C) 2007 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef ANDROID_SF_SURFACE_H
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#define ANDROID_SF_SURFACE_H
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#include <stdint.h>
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#include <sys/types.h>
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#include <utils/KeyedVector.h>
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#include <utils/RefBase.h>
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#include <utils/threads.h>
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#include <ui/PixelFormat.h>
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#include <ui/Region.h>
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#include <ui/egl/android_natives.h>
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#include <surfaceflinger/ISurface.h>
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#include <surfaceflinger/ISurfaceComposerClient.h>
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#define ANDROID_VIEW_SURFACE_JNI_ID "mNativeSurface"
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namespace android {
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// ---------------------------------------------------------------------------
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class GraphicBuffer;
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class GraphicBufferMapper;
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class IOMX;
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class Rect;
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class Surface;
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class SurfaceComposerClient;
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class SharedClient;
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class SharedBufferClient;
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class SurfaceClient;
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// ---------------------------------------------------------------------------
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class SurfaceControl : public RefBase
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{
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public:
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static bool isValid(const sp<SurfaceControl>& surface) {
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return (surface != 0) && surface->isValid();
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}
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bool isValid() {
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return mToken>=0 && mClient!=0;
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}
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static bool isSameSurface(
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const sp<SurfaceControl>& lhs, const sp<SurfaceControl>& rhs);
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uint32_t getFlags() const { return mFlags; }
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uint32_t getIdentity() const { return mIdentity; }
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// release surface data from java
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void clear();
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status_t setLayer(int32_t layer);
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status_t setPosition(int32_t x, int32_t y);
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status_t setSize(uint32_t w, uint32_t h);
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status_t hide();
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status_t show(int32_t layer = -1);
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status_t freeze();
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status_t unfreeze();
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status_t setFlags(uint32_t flags, uint32_t mask);
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status_t setTransparentRegionHint(const Region& transparent);
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status_t setAlpha(float alpha=1.0f);
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status_t setMatrix(float dsdx, float dtdx, float dsdy, float dtdy);
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status_t setFreezeTint(uint32_t tint);
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static status_t writeSurfaceToParcel(
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const sp<SurfaceControl>& control, Parcel* parcel);
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sp<Surface> getSurface() const;
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private:
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// can't be copied
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SurfaceControl& operator = (SurfaceControl& rhs);
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SurfaceControl(const SurfaceControl& rhs);
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friend class SurfaceComposerClient;
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// camera and camcorder need access to the ISurface binder interface for preview
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friend class Camera;
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friend class MediaRecorder;
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// mediaplayer needs access to ISurface for display
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friend class MediaPlayer;
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// for testing
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friend class Test;
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const sp<ISurface>& getISurface() const { return mSurface; }
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friend class Surface;
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SurfaceControl(
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const sp<SurfaceComposerClient>& client,
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const sp<ISurface>& surface,
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const ISurfaceComposerClient::surface_data_t& data,
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uint32_t w, uint32_t h, PixelFormat format, uint32_t flags);
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~SurfaceControl();
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status_t validate() const;
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void destroy();
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sp<SurfaceComposerClient> mClient;
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sp<ISurface> mSurface;
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SurfaceID mToken;
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uint32_t mIdentity;
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uint32_t mWidth;
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uint32_t mHeight;
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PixelFormat mFormat;
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uint32_t mFlags;
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mutable Mutex mLock;
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mutable sp<Surface> mSurfaceData;
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};
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// ---------------------------------------------------------------------------
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class Surface
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: public EGLNativeBase<ANativeWindow, Surface, RefBase>
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{
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public:
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struct SurfaceInfo {
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uint32_t w;
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uint32_t h;
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uint32_t s;
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uint32_t usage;
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PixelFormat format;
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void* bits;
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uint32_t reserved[2];
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};
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static status_t writeToParcel(
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const sp<Surface>& control, Parcel* parcel);
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static sp<Surface> readFromParcel(const Parcel& data);
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static bool isValid(const sp<Surface>& surface) {
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return (surface != 0) && surface->isValid();
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}
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bool isValid();
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uint32_t getFlags() const { return mFlags; }
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uint32_t getIdentity() const { return mIdentity; }
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// the lock/unlock APIs must be used from the same thread
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status_t lock(SurfaceInfo* info, bool blocking = true);
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status_t lock(SurfaceInfo* info, Region* dirty, bool blocking = true);
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status_t unlockAndPost();
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// setSwapRectangle() is intended to be used by GL ES clients
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void setSwapRectangle(const Rect& r);
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private:
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/*
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* Android frameworks friends
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* (eventually this should go away and be replaced by proper APIs)
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*/
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// camera and camcorder need access to the ISurface binder interface for preview
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friend class Camera;
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friend class MediaRecorder;
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// MediaPlayer needs access to ISurface for display
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friend class MediaPlayer;
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friend class IOMX;
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// this is just to be able to write some unit tests
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friend class Test;
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private:
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friend class SurfaceComposerClient;
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friend class SurfaceControl;
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// can't be copied
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Surface& operator = (Surface& rhs);
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Surface(const Surface& rhs);
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Surface(const sp<SurfaceControl>& control);
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Surface(const Parcel& data, const sp<IBinder>& ref);
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~Surface();
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/*
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* ANativeWindow hooks
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*/
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static int setSwapInterval(ANativeWindow* window, int interval);
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static int dequeueBuffer(ANativeWindow* window, android_native_buffer_t** buffer);
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static int cancelBuffer(ANativeWindow* window, android_native_buffer_t* buffer);
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static int lockBuffer(ANativeWindow* window, android_native_buffer_t* buffer);
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static int queueBuffer(ANativeWindow* window, android_native_buffer_t* buffer);
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static int query(ANativeWindow* window, int what, int* value);
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static int perform(ANativeWindow* window, int operation, ...);
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int dequeueBuffer(android_native_buffer_t** buffer);
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int lockBuffer(android_native_buffer_t* buffer);
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int queueBuffer(android_native_buffer_t* buffer);
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int cancelBuffer(android_native_buffer_t* buffer);
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int query(int what, int* value);
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int perform(int operation, va_list args);
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void dispatch_setUsage(va_list args);
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int dispatch_connect(va_list args);
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int dispatch_disconnect(va_list args);
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int dispatch_crop(va_list args);
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int dispatch_set_buffer_count(va_list args);
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int dispatch_set_buffers_geometry(va_list args);
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int dispatch_set_buffers_transform(va_list args);
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void setUsage(uint32_t reqUsage);
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int connect(int api);
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int disconnect(int api);
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int crop(Rect const* rect);
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int setBufferCount(int bufferCount);
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int setBuffersGeometry(int w, int h, int format);
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int setBuffersTransform(int transform);
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/*
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* private stuff...
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*/
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void init();
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status_t validate() const;
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sp<ISurface> getISurface() const;
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inline const GraphicBufferMapper& getBufferMapper() const { return mBufferMapper; }
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inline GraphicBufferMapper& getBufferMapper() { return mBufferMapper; }
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status_t getBufferLocked(int index,
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uint32_t w, uint32_t h, uint32_t format, uint32_t usage);
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int getBufferIndex(const sp<GraphicBuffer>& buffer) const;
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int getConnectedApi() const;
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bool needNewBuffer(int bufIdx,
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uint32_t *pWidth, uint32_t *pHeight,
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uint32_t *pFormat, uint32_t *pUsage) const;
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static void cleanCachedSurfaces();
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class BufferInfo {
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uint32_t mWidth;
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uint32_t mHeight;
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uint32_t mFormat;
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uint32_t mUsage;
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mutable uint32_t mDirty;
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enum {
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GEOMETRY = 0x01
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};
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public:
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BufferInfo();
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void set(uint32_t w, uint32_t h, uint32_t format);
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void set(uint32_t usage);
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void get(uint32_t *pWidth, uint32_t *pHeight,
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uint32_t *pFormat, uint32_t *pUsage) const;
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bool validateBuffer(const sp<GraphicBuffer>& buffer) const;
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};
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// constants
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GraphicBufferMapper& mBufferMapper;
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SurfaceClient& mClient;
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SharedBufferClient* mSharedBufferClient;
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status_t mInitCheck;
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sp<ISurface> mSurface;
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uint32_t mIdentity;
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PixelFormat mFormat;
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uint32_t mFlags;
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// protected by mSurfaceLock
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Rect mSwapRectangle;
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int mConnected;
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Rect mNextBufferCrop;
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uint32_t mNextBufferTransform;
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BufferInfo mBufferInfo;
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// protected by mSurfaceLock. These are also used from lock/unlock
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// but in that case, they must be called form the same thread.
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mutable Region mDirtyRegion;
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// must be used from the lock/unlock thread
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sp<GraphicBuffer> mLockedBuffer;
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sp<GraphicBuffer> mPostedBuffer;
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mutable Region mOldDirtyRegion;
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bool mReserved;
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// only used from dequeueBuffer()
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Vector< sp<GraphicBuffer> > mBuffers;
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// query() must be called from dequeueBuffer() thread
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uint32_t mWidth;
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uint32_t mHeight;
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// Inherently thread-safe
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mutable Mutex mSurfaceLock;
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mutable Mutex mApiLock;
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// A cache of Surface objects that have been deserialized into this process.
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static Mutex sCachedSurfacesLock;
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static DefaultKeyedVector<wp<IBinder>, wp<Surface> > sCachedSurfaces;
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};
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}; // namespace android
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#endif // ANDROID_SF_SURFACE_H
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