83 lines
2.9 KiB
C
83 lines
2.9 KiB
C
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/*
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* Copyright (C) 2010 The Android Open Source Project
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* Copyright (C) 2012, Code Aurora Forum. All rights reserved.
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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_EXTONLY_H
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#define HWC_EXTONLY_H
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#include <overlay.h>
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#include "hwc_utils.h"
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#define LIKELY( exp ) (__builtin_expect( (exp) != 0, true ))
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#define UNLIKELY( exp ) (__builtin_expect( (exp) != 0, false ))
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namespace qhwc {
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//Feature for using overlay to display external-only layers on HDTV
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class ExtOnly {
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public:
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//Sets up members and prepares overlay if conditions are met
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static bool prepare(hwc_context_t *ctx, hwc_layer_list_t *list);
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//Draws layer if this feature is on
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static bool draw(hwc_context_t *ctx, hwc_layer_list_t *list);
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//Receives data from hwc
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static void setStats(int extCount, int extIndex, bool isExtBlock);
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//resets values
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static void reset();
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private:
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//Choose an appropriate overlay state based on conditions
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static void chooseState(hwc_context_t *ctx);
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//Configures overlay
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static bool configure(hwc_context_t *ctx, hwc_layer_t *layer);
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//Marks layer flags if this feature is used
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static void markFlags(hwc_layer_t *layer);
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//returns ext-only count
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static int getExtCount();
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//The chosen overlay state.
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static ovutils::eOverlayState sState;
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//Number of ext-only layers in this drawing round. Used for stats/debugging.
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//This does not reflect the closed caption layer count even though its
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//ext-only.
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static int sExtCount;
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//Index of ext-only layer. If there are 2 such layers with 1 marked as BLOCK
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//then this will hold the index of BLOCK layer.
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static int sExtIndex;
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//Flags if ext-only layer is BLOCK, which means only this layer (sExtIndex)
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//is displayed even if other ext-only layers are present to block their
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//content. This is used for stats / debugging only.
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static bool sIsExtBlock;
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//Flags if this feature is on.
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static bool sIsModeOn;
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};
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inline void ExtOnly::setStats(int extCount, int extIndex, bool isExtBlock) {
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sExtCount = extCount;
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sExtIndex = extIndex;
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sIsExtBlock = isExtBlock;
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}
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inline int ExtOnly::getExtCount() { return sExtCount; }
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inline void ExtOnly::reset() {
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sExtCount = 0;
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sExtIndex = -1;
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sIsExtBlock = false;
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sIsModeOn = false;
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sState = ovutils::OV_CLOSED;
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}
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}; //namespace qhwc
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#endif //HWC_EXTONLY_H
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