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141 lines
5.0 KiB
141 lines
5.0 KiB
/*
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* Copyright (C) 2010 The Android Open Source Project
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* Copyright (C) 2012-2014, The Linux Foundation. All rights reserved.
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*
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* Not a Contribution, Apache license notifications and license are retained
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* for attribution purposes only.
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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 HWC_COPYBIT_H
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#define HWC_COPYBIT_H
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#include "hwc_utils.h"
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#define NUM_RENDER_BUFFERS 3
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//These scaling factors are specific for MDP3. Normally scaling factor
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//is only 4, but copybit will create temp buffer to let it run through
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//twice
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#define MAX_SCALE_FACTOR 16
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#define MIN_SCALE_FACTOR 0.0625
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#define MAX_LAYERS_FOR_ABC 2
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namespace qhwc {
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class CopyBit {
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public:
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CopyBit(hwc_context_t *ctx, const int& dpy);
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~CopyBit();
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// API to get copybit engine(non static)
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struct copybit_device_t *getCopyBitDevice();
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//Sets up members and prepares copybit if conditions are met
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bool prepare(hwc_context_t *ctx, hwc_display_contents_1_t *list,
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int dpy);
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//Draws layer if the layer is set for copybit in prepare
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bool draw(hwc_context_t *ctx, hwc_display_contents_1_t *list,
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int dpy, int* fd);
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// resets the values
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void reset();
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private_handle_t * getCurrentRenderBuffer();
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void setReleaseFd(int fd);
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void setReleaseFdSync(int fd);
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bool prepareOverlap(hwc_context_t *ctx, hwc_display_contents_1_t *list);
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int drawOverlap(hwc_context_t *ctx, hwc_display_contents_1_t *list);
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private:
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/* cached data */
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struct LayerCache {
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int layerCount;
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buffer_handle_t hnd[MAX_NUM_APP_LAYERS];
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/* c'tor */
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LayerCache();
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/* clear caching info*/
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void reset();
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void updateCounts(hwc_context_t *ctx, hwc_display_contents_1_t *list,
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int dpy);
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};
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/* framebuffer cache*/
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struct FbCache {
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hwc_rect_t FbdirtyRect[NUM_RENDER_BUFFERS];
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int FbIndex;
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FbCache();
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void reset();
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void insertAndUpdateFbCache(hwc_rect_t dirtyRect);
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int getUnchangedFbDRCount(hwc_rect_t dirtyRect);
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};
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// holds the copybit device
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struct copybit_device_t *mEngine;
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bool drawUsingAppBufferComposition(hwc_context_t *ctx,
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hwc_display_contents_1_t *list,
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int dpy, int *fd);
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// Helper functions for copybit composition
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int drawLayerUsingCopybit(hwc_context_t *dev, hwc_layer_1_t *layer,
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private_handle_t *renderBuffer, bool isFG);
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// Helper function to draw copybit layer for PTOR comp
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int drawRectUsingCopybit(hwc_context_t *dev, hwc_layer_1_t *layer,
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private_handle_t *renderBuffer, hwc_rect_t overlap,
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hwc_rect_t destRect);
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int fillColorUsingCopybit(hwc_layer_1_t *layer,
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private_handle_t *renderBuffer);
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bool canUseCopybitForYUV (hwc_context_t *ctx);
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bool canUseCopybitForRGB (hwc_context_t *ctx,
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hwc_display_contents_1_t *list, int dpy);
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bool validateParams (hwc_context_t *ctx,
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const hwc_display_contents_1_t *list);
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//Flags if this feature is on.
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bool mIsModeOn;
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// flag that indicates whether CopyBit composition is enabled for this cycle
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bool mCopyBitDraw;
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unsigned int getRGBRenderingArea (const hwc_context_t *ctx,
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const hwc_display_contents_1_t *list);
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void getLayerResolution(const hwc_layer_1_t* layer,
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unsigned int &width, unsigned int& height);
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int allocRenderBuffers(int w, int h, int f);
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void freeRenderBuffers();
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int clear (private_handle_t* hnd, hwc_rect_t& rect);
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private_handle_t* mRenderBuffer[NUM_RENDER_BUFFERS];
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// Index of the current intermediate render buffer
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int mCurRenderBufferIndex;
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// Release FDs of the intermediate render buffer
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int mRelFd[NUM_RENDER_BUFFERS];
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//Dynamic composition threshold for deciding copybit usage.
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double mDynThreshold;
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bool mSwapRectEnable;
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int mAlignedWidth;
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int mAlignedHeight;
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int mDirtyLayerIndex;
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LayerCache mLayerCache;
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FbCache mFbCache;
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int getLayersChanging(hwc_context_t *ctx, hwc_display_contents_1_t *list,
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int dpy);
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int checkDirtyRect(hwc_context_t *ctx, hwc_display_contents_1_t *list,
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int dpy);
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};
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}; //namespace qhwc
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#endif //HWC_COPYBIT_H
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