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