/* * 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 #include #include #include #include #include namespace android { class Fence; class GraphicBuffer; class BufferItem : public Flattenable { friend class Flattenable; 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(); operator IGraphicBufferConsumer::BufferItem() const; 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 mGraphicBuffer; // mFence is a fence that will signal when the buffer is idle. sp 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 uint32_t mTransform; // mScalingMode is the current scaling mode for this buffer slot. // refer to NATIVE_WINDOW_SCALING_* in 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. int64_t mTimestamp; // mIsAutoTimestamp indicates whether mTimestamp was generated // automatically when the buffer was queued. bool mIsAutoTimestamp; // mFrameNumber is the number of the queued frame for this slot. uint64_t mFrameNumber; // 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; }; } // namespace android #endif