The Tor Browser: widget/gonk/libdisplay/FramebufferSurface.h@fc2d59ddac77

     1 /*

     2  * Copyright (C) 2007 The Android Open Source Project

     3  *

     4  * Licensed under the Apache License, Version 2.0 (the "License");

     5  * you may not use this file except in compliance with the License.

     6  * You may obtain a copy of the License at

     7  *

     8  *      http://www.apache.org/licenses/LICENSE-2.0

     9  *

    10  * Unless required by applicable law or agreed to in writing, software

    11  * distributed under the License is distributed on an "AS IS" BASIS,

    12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

    13  * See the License for the specific language governing permissions and

    14  * limitations under the License.

    15  */

    17 #ifndef ANDROID_SF_FRAMEBUFFER_SURFACE_H

    18 #define ANDROID_SF_FRAMEBUFFER_SURFACE_H

    20 #include <stdint.h>

    21 #include <sys/types.h>

    23 #include <gui/ConsumerBase.h>

    25 // ---------------------------------------------------------------------------

    26 namespace android {

    27 // ---------------------------------------------------------------------------

    29 class Rect;

    30 class String8;

    31 class HWComposer;

    33 // ---------------------------------------------------------------------------

    35 class FramebufferSurface : public ConsumerBase {

    36 public:

    37     FramebufferSurface(int disp, uint32_t width, uint32_t height, uint32_t format, sp<BufferQueue>& bq);

    39     bool isUpdateOnDemand() const { return false; }

    40     status_t setUpdateRectangle(const Rect& updateRect);

    41     status_t compositionComplete();

    43     virtual void dump(String8& result);

    44     virtual void dump(String8& result, const char* prefix);

    46     // setReleaseFenceFd stores a fence file descriptor that will signal when the

    47     // current buffer is no longer being read. This fence will be returned to

    48     // the producer when the current buffer is released by updateTexImage().

    49     // Multiple fences can be set for a given buffer; they will be merged into

    50     // a single union fence. The SurfaceTexture will close the file descriptor

    51     // when finished with it.

    52     status_t setReleaseFenceFd(int fenceFd);

    54     virtual int GetPrevFBAcquireFd();

    56     buffer_handle_t lastHandle;

    57 private:

    58     virtual ~FramebufferSurface() { }; // this class cannot be overloaded

    60     virtual void onFrameAvailable();

    61     virtual void freeBufferLocked(int slotIndex);

    63     // nextBuffer waits for and then latches the next buffer from the

    64     // BufferQueue and releases the previously latched buffer to the

    65     // BufferQueue.  The new buffer is returned in the 'buffer' argument.

    66     status_t nextBuffer(sp<GraphicBuffer>& outBuffer, sp<Fence>& outFence);

    68     // mDisplayType must match one of the HWC display types

    69     int mDisplayType;

    71     // mCurrentBufferIndex is the slot index of the current buffer or

    72     // INVALID_BUFFER_SLOT to indicate that either there is no current buffer

    73     // or the buffer is not associated with a slot.

    74     int mCurrentBufferSlot;

    76     // mCurrentBuffer is the current buffer or NULL to indicate that there is

    77     // no current buffer.

    78     sp<GraphicBuffer> mCurrentBuffer;

    80     android::sp<android::Fence> mPrevFBAcquireFence;

    81 };

    83 // ---------------------------------------------------------------------------

    84 }; // namespace android

    85 // ---------------------------------------------------------------------------

    87 #endif // ANDROID_SF_FRAMEBUFFER_SURFACE_H

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