145 lines
4.1 KiB
C++
145 lines
4.1 KiB
C++
/*
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* Copyright (C) 2022 The Android Open Source Project
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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 ANDROID_HWC2_DEVICE_HWC_LAYER_H
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#define ANDROID_HWC2_DEVICE_HWC_LAYER_H
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#include <hardware/hwcomposer2.h>
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#include "bufferinfo/BufferInfoGetter.h"
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#include "compositor/LayerData.h"
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namespace android {
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class HwcDisplay;
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class HwcLayer {
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public:
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explicit HwcLayer(HwcDisplay *parent_display) : parent_(parent_display){};
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HWC2::Composition GetSfType() const {
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return sf_type_;
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}
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HWC2::Composition GetValidatedType() const {
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return validated_type_;
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}
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void AcceptTypeChange() {
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sf_type_ = validated_type_;
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}
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void SetValidatedType(HWC2::Composition type) {
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validated_type_ = type;
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}
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bool IsTypeChanged() const {
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return sf_type_ != validated_type_;
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}
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bool GetPriorBufferScanOutFlag() const {
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return prior_buffer_scanout_flag_;
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}
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void SetPriorBufferScanOutFlag(bool state) {
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prior_buffer_scanout_flag_ = state;
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}
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uint32_t GetZOrder() const {
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return z_order_;
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}
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auto &GetLayerData() {
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return layer_data_;
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}
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// Layer hooks
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HWC2::Error SetCursorPosition(int32_t /*x*/, int32_t /*y*/);
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HWC2::Error SetLayerBlendMode(int32_t mode);
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HWC2::Error SetLayerBuffer(buffer_handle_t buffer, int32_t acquire_fence);
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HWC2::Error SetLayerColor(hwc_color_t /*color*/);
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HWC2::Error SetLayerCompositionType(int32_t type);
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HWC2::Error SetLayerDataspace(int32_t dataspace);
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HWC2::Error SetLayerDisplayFrame(hwc_rect_t frame);
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HWC2::Error SetLayerPlaneAlpha(float alpha);
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HWC2::Error SetLayerSidebandStream(const native_handle_t *stream);
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HWC2::Error SetLayerSourceCrop(hwc_frect_t crop);
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HWC2::Error SetLayerSurfaceDamage(hwc_region_t damage);
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HWC2::Error SetLayerTransform(int32_t transform);
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HWC2::Error SetLayerVisibleRegion(hwc_region_t visible);
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HWC2::Error SetLayerZOrder(uint32_t order);
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private:
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// sf_type_ stores the initial type given to us by surfaceflinger,
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// validated_type_ stores the type after running ValidateDisplay
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HWC2::Composition sf_type_ = HWC2::Composition::Invalid;
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HWC2::Composition validated_type_ = HWC2::Composition::Invalid;
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uint32_t z_order_ = 0;
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LayerData layer_data_;
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/* Should be populated to layer_data_.acquire_fence only before presenting */
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UniqueFd acquire_fence_;
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/* The following buffer data can have 2 sources:
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* 1 - Mapper@4 metadata API
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* 2 - HWC@2 API
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* We keep ability to have 2 sources in drm_hwc. It may be useful for CLIENT
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* layer, at this moment HWC@2 API can't specify blending mode for this layer,
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* but Mapper@4 can do that
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*/
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BufferColorSpace color_space_{};
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BufferSampleRange sample_range_{};
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BufferBlendMode blend_mode_{};
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buffer_handle_t buffer_handle_{};
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bool buffer_handle_updated_{};
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bool prior_buffer_scanout_flag_{};
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HwcDisplay *const parent_;
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/* Layer state */
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public:
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void PopulateLayerData(bool test);
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bool IsLayerUsableAsDevice() const {
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return !bi_get_failed_ && !fb_import_failed_ && buffer_handle_ != nullptr;
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}
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private:
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void ImportFb();
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bool bi_get_failed_{};
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bool fb_import_failed_{};
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/* SwapChain Cache */
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public:
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void SwChainClearCache();
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private:
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struct SwapChainElement {
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std::optional<BufferInfo> bi;
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std::shared_ptr<DrmFbIdHandle> fb;
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};
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bool SwChainGetBufferFromCache(BufferUniqueId unique_id);
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void SwChainReassemble(BufferUniqueId unique_id);
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void SwChainAddCurrentBuffer(BufferUniqueId unique_id);
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std::map<int /*seq_no*/, SwapChainElement> swchain_cache_;
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std::map<BufferUniqueId, int /*seq_no*/> swchain_lookup_table_;
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bool swchain_reassembled_{};
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};
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} // namespace android
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#endif
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