diff options
Diffstat (limited to 'include/gui/BufferQueue.h')
| -rw-r--r-- | include/gui/BufferQueue.h | 119 |
1 files changed, 19 insertions, 100 deletions
diff --git a/include/gui/BufferQueue.h b/include/gui/BufferQueue.h index 8c21a28..dd1558c 100644 --- a/include/gui/BufferQueue.h +++ b/include/gui/BufferQueue.h @@ -40,7 +40,6 @@ public: }; enum { NUM_BUFFER_SLOTS = 32 }; enum { NO_CONNECTED_API = 0 }; - enum { INVALID_BUFFER_SLOT = -1 }; struct FrameAvailableListener : public virtual RefBase { // onFrameAvailable() is called from queueBuffer() each time an @@ -120,91 +119,8 @@ public: // connected to the specified client API. virtual status_t disconnect(int api); - // dump our state in a String - virtual void dump(String8& result) const; - virtual void dump(String8& result, const char* prefix, char* buffer, size_t SIZE) const; - - // public facing structure for BufferSlot - struct BufferItem { - - BufferItem() - : - mTransform(0), - mScalingMode(NATIVE_WINDOW_SCALING_MODE_FREEZE), - mTimestamp(0), - mFrameNumber(0), - mBuf(INVALID_BUFFER_SLOT) { - mCrop.makeInvalid(); - } - // mGraphicBuffer points to the buffer allocated for this slot or is NULL - // if no buffer has been allocated. - sp<GraphicBuffer> mGraphicBuffer; - - // mCrop is the current crop rectangle for this buffer slot. This gets - // set to mNextCrop each time queueBuffer gets called for this buffer. - Rect mCrop; - - // mTransform is the current transform flags for this buffer slot. This - // gets set to mNextTransform each time queueBuffer gets called for this - // slot. - uint32_t mTransform; - - // mScalingMode is the current scaling mode for this buffer slot. This - // gets set to mNextScalingMode each time queueBuffer gets called for - // this slot. - uint32_t mScalingMode; - - // mTimestamp is the current timestamp for this buffer slot. This gets - // to set by queueBuffer each time this slot is queued. - int64_t mTimestamp; +protected: - // mFrameNumber is the number of the queued frame for this slot. - uint64_t mFrameNumber; - - // buf is the slot index of this buffer - int mBuf; - - }; - - // The following public functions is the consumer facing interface - - // acquire consumes a buffer by transferring its ownership to a consumer. - // buffer contains the GraphicBuffer and its corresponding information. - // buffer.mGraphicsBuffer will be NULL when the buffer has been already - // acquired by the consumer. - - status_t acquire(BufferItem *buffer); - - // releaseBuffer releases a buffer slot from the consumer back to the - // BufferQueue pending a fence sync. - status_t releaseBuffer(int buf, EGLDisplay display, EGLSyncKHR fence); - - // consumerDisconnect disconnects a consumer from the BufferQueue. All - // buffers will be freed. - status_t consumerDisconnect(); - - // setDefaultBufferSize is used to set the size of buffers returned by - // requestBuffers when a with and height of zero is requested. - status_t setDefaultBufferSize(uint32_t w, uint32_t h); - - // setBufferCountServer set the buffer count. If the client has requested - // a buffer count using setBufferCount, the server-buffer count will - // take effect once the client sets the count back to zero. - status_t setBufferCountServer(int bufferCount); - - // isSynchronousMode returns whether the SurfaceTexture is currently in - // synchronous mode. - bool isSynchronousMode() const; - - // setConsumerName sets the name used in logging - void setConsumerName(const String8& name); - - // setFrameAvailableListener sets the listener object that will be notified - // when a new frame becomes available. - void setFrameAvailableListener(const sp<FrameAvailableListener>& listener); - - -private: // freeBufferLocked frees the resources (both GraphicBuffer and EGLImage) // for the given slot. void freeBufferLocked(int index); @@ -229,18 +145,20 @@ private: status_t setBufferCountServerLocked(int bufferCount); + enum { INVALID_BUFFER_SLOT = -1 }; + struct BufferSlot { BufferSlot() - : mEglDisplay(EGL_NO_DISPLAY), + : mEglImage(EGL_NO_IMAGE_KHR), + mEglDisplay(EGL_NO_DISPLAY), mBufferState(BufferSlot::FREE), mRequestBufferCalled(false), mTransform(0), mScalingMode(NATIVE_WINDOW_SCALING_MODE_FREEZE), mTimestamp(0), mFrameNumber(0), - mFence(EGL_NO_SYNC_KHR), - mAcquireCalled(false) { + mFence(EGL_NO_SYNC_KHR) { mCrop.makeInvalid(); } @@ -248,6 +166,9 @@ private: // if no buffer has been allocated. sp<GraphicBuffer> mGraphicBuffer; + // mEglImage is the EGLImage created from mGraphicBuffer. + EGLImageKHR mEglImage; + // mEglDisplay is the EGLDisplay used to create mEglImage. EGLDisplay mEglDisplay; @@ -257,7 +178,6 @@ private: // FREE indicates that the buffer is not currently being used and // will not be used in the future until it gets dequeued and // subsequently queued by the client. - // aka "owned by BufferQueue, ready to be dequeued" FREE = 0, // DEQUEUED indicates that the buffer has been dequeued by the @@ -270,7 +190,6 @@ private: // dequeued by the client. That means that the current buffer can // be in either the DEQUEUED or QUEUED state. In asynchronous mode, // however, the current buffer is always in the QUEUED state. - // aka "owned by producer, ready to be queued" DEQUEUED = 1, // QUEUED indicates that the buffer has been queued by the client, @@ -280,11 +199,7 @@ private: // the current buffer may be dequeued by the client under some // circumstances. See the note about the current buffer in the // documentation for DEQUEUED. - // aka "owned by BufferQueue, ready to be acquired" QUEUED = 2, - - // aka "owned by consumer, ready to be released" - ACQUIRED = 3 }; // mBufferState is the current state of this buffer slot. @@ -321,9 +236,6 @@ private: // to EGL_NO_SYNC_KHR when the buffer is created and (optionally, based // on a compile-time option) set to a new sync object in updateTexImage. EGLSyncKHR mFence; - - // Indicates whether this buffer has been seen by a consumer yet - bool mAcquireCalled; }; // mSlots is the array of buffer slots that must be mirrored on the client @@ -333,6 +245,7 @@ private: // for a slot when requestBuffer is called with that slot's index. BufferSlot mSlots[NUM_BUFFER_SLOTS]; + // mDefaultWidth holds the default width of allocated buffers. It is used // in requestBuffers() if a width and height of zero is specified. uint32_t mDefaultWidth; @@ -358,6 +271,14 @@ private: // mServerBufferCount buffer count requested by the server-side int mServerBufferCount; + // mCurrentTexture is the buffer slot index of the buffer that is currently + // bound to the OpenGL texture. It is initialized to INVALID_BUFFER_SLOT, + // indicating that no buffer slot is currently bound to the texture. Note, + // however, that a value of INVALID_BUFFER_SLOT does not necessarily mean + // that no buffer is bound to the texture. A call to setBufferCount will + // reset mCurrentTexture to INVALID_BUFFER_SLOT. + int mCurrentTexture; + // mNextCrop is the crop rectangle that will be used for the next buffer // that gets queued. It is set by calling setCrop. Rect mNextCrop; @@ -406,7 +327,7 @@ private: // mName is a string used to identify the BufferQueue in log messages. // It is set by the setName method. - String8 mConsumerName; + String8 mName; // mMutex is the mutex used to prevent concurrent access to the member // variables of BufferQueue objects. It must be locked whenever the @@ -416,8 +337,6 @@ private: // mFrameCounter is the free running counter, incremented for every buffer queued // with the surface Texture. uint64_t mFrameCounter; - - bool mBufferHasBeenQueued; }; // ---------------------------------------------------------------------------- |