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/*
* Copyright (C) 2020 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.
*/
#pragma once
#include "hwc2_device/DrmHwcTwo.h"
namespace android {
class Backend {
public:
virtual ~Backend() = default;
virtual HWC2::Error ValidateDisplay(HwcDisplay *display, uint32_t *num_types,
uint32_t *num_requests);
virtual std::tuple<int, size_t> GetClientLayers(
HwcDisplay *display, const std::vector<HwcLayer *> &layers);
virtual bool IsClientLayer(HwcDisplay *display, HwcLayer *layer);
protected:
static bool HardwareSupportsLayerType(HWC2::Composition comp_type);
static uint32_t CalcPixOps(const std::vector<HwcLayer *> &layers,
size_t first_z, size_t size);
static void MarkValidated(std::vector<HwcLayer *> &layers,
size_t client_first_z, size_t client_size);
static std::tuple<int, int> GetExtraClientRange(
HwcDisplay *display, const std::vector<HwcLayer *> &layers,
int client_start, size_t client_size);
};
} // namespace android
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