75 lines
2.2 KiB
C++
75 lines
2.2 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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#define LOG_TAG "drmhwc"
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#include "DrmKmsPlan.h"
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#include "drm/DrmDevice.h"
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#include "drm/DrmPlane.h"
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#include "utils/log.h"
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namespace android::drm_hwcomposer {
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auto DrmKmsPlan::CreateDrmKmsPlan(const DrmDisplayPipeline &pipe,
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std::vector<LayerData> composition,
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std::optional<LayerData> cursor_layer)
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-> std::unique_ptr<DrmKmsPlan> {
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auto plan = std::make_unique<DrmKmsPlan>();
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auto [avail_planes, cursor_plane] = pipe.GetUsablePlanes();
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int z_pos = 0;
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for (auto &dhl : composition) {
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std::shared_ptr<BindingOwner<DrmPlane>> plane;
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/* Skip unsupported planes */
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do {
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if (avail_planes.empty()) {
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return {};
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}
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plane = *avail_planes.begin();
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avail_planes.erase(avail_planes.begin());
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} while (!plane->Get()->IsValidForLayer(&dhl));
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LayerToPlaneJoining joining = {
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.layer = std::move(dhl),
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.plane = plane,
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.z_pos = z_pos++,
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};
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plan->plan.emplace_back(std::move(joining));
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}
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// Add cursor plane last to ensure it gets highest z-pos.
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if (cursor_layer.has_value()) {
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if (cursor_plane &&
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cursor_plane->Get()->IsValidForLayer(&cursor_layer.value())) {
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plan->plan.emplace_back(
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LayerToPlaneJoining{.layer = std::move(cursor_layer.value()),
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.plane = cursor_plane,
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.z_pos = z_pos++});
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} else {
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// Cursor plane can't be used. The cursor layer may need to fallback to
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// device or client composition.
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return {};
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}
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}
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return plan;
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}
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} // namespace android::drm_hwcomposer
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