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130 lines
4.0 KiB
130 lines
4.0 KiB
/*
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* Copyright 2014 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_GUI_BUFFERITEM_H
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#define ANDROID_GUI_BUFFERITEM_H
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#include <EGL/egl.h>
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#include <EGL/eglext.h>
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#include <ui/Rect.h>
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#include <ui/Region.h>
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#include <system/graphics.h>
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#include <utils/Flattenable.h>
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#include <utils/StrongPointer.h>
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namespace android {
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class Fence;
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class GraphicBuffer;
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class BufferItem : public Flattenable<BufferItem> {
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friend class Flattenable<BufferItem>;
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size_t getPodSize() const;
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size_t getFlattenedSize() const;
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size_t getFdCount() const;
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status_t flatten(void*& buffer, size_t& size, int*& fds, size_t& count) const;
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status_t unflatten(void const*& buffer, size_t& size, int const*& fds, size_t& count);
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public:
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// The default value of mBuf, used to indicate this doesn't correspond to a slot.
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enum { INVALID_BUFFER_SLOT = -1 };
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BufferItem();
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~BufferItem();
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static const char* scalingModeName(uint32_t scalingMode);
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// mGraphicBuffer points to the buffer allocated for this slot, or is NULL
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// if the buffer in this slot has been acquired in the past (see
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// BufferSlot.mAcquireCalled).
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sp<GraphicBuffer> mGraphicBuffer;
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// mFence is a fence that will signal when the buffer is idle.
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sp<Fence> mFence;
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// mCrop is the current crop rectangle for this buffer slot.
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Rect mCrop;
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// mTransform is the current transform flags for this buffer slot.
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// refer to NATIVE_WINDOW_TRANSFORM_* in <window.h>
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uint32_t mTransform;
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// mScalingMode is the current scaling mode for this buffer slot.
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// refer to NATIVE_WINDOW_SCALING_* in <window.h>
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uint32_t mScalingMode;
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// mTimestamp is the current timestamp for this buffer slot. This gets
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// to set by queueBuffer each time this slot is queued. This value
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// is guaranteed to be monotonically increasing for each newly
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// acquired buffer.
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union {
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int64_t mTimestamp;
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struct {
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uint32_t mTimestampLo;
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uint32_t mTimestampHi;
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};
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};
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// mIsAutoTimestamp indicates whether mTimestamp was generated
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// automatically when the buffer was queued.
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bool mIsAutoTimestamp;
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// mDataSpace is the current dataSpace value for this buffer slot. This gets
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// set by queueBuffer each time this slot is queued. The meaning of the
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// dataSpace is format-dependent.
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android_dataspace mDataSpace;
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// mFrameNumber is the number of the queued frame for this slot.
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union {
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uint64_t mFrameNumber;
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struct {
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uint32_t mFrameNumberLo;
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uint32_t mFrameNumberHi;
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};
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};
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union {
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// mSlot is the slot index of this buffer (default INVALID_BUFFER_SLOT).
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int mSlot;
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// mBuf is the former name for mSlot
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int mBuf;
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};
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// mIsDroppable whether this buffer was queued with the
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// property that it can be replaced by a new buffer for the purpose of
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// making sure dequeueBuffer() won't block.
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// i.e.: was the BufferQueue in "mDequeueBufferCannotBlock" when this buffer
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// was queued.
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bool mIsDroppable;
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// Indicates whether this buffer has been seen by a consumer yet
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bool mAcquireCalled;
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// Indicates this buffer must be transformed by the inverse transform of the screen
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// it is displayed onto. This is applied after mTransform.
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bool mTransformToDisplayInverse;
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// Describes the portion of the surface that has been modified since the
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// previous frame
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Region mSurfaceDamage;
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};
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} // namespace android
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#endif
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