92 lines
2.3 KiB
C++
92 lines
2.3 KiB
C++
/*
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* Copyright (C) 2021 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 DRM_DRMFBIMPORTER_H_
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#define DRM_DRMFBIMPORTER_H_
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#include <drm/drm_fourcc.h>
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#include <hardware/gralloc.h>
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#include <array>
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#include <map>
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#include "drm/DrmDevice.h"
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#include "drmhwcgralloc.h"
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#ifndef DRM_FORMAT_INVALID
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#define DRM_FORMAT_INVALID 0
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#endif
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using GemHandle = uint32_t;
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namespace android {
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class DrmFbIdHandle {
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public:
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static auto CreateInstance(hwc_drm_bo_t *bo, GemHandle first_gem_handle,
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DrmDevice &drm) -> std::shared_ptr<DrmFbIdHandle>;
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~DrmFbIdHandle();
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DrmFbIdHandle(DrmFbIdHandle &&) = delete;
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DrmFbIdHandle(const DrmFbIdHandle &) = delete;
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auto operator=(const DrmFbIdHandle &) = delete;
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auto operator=(DrmFbIdHandle &&) = delete;
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auto GetFbId [[nodiscard]] () const -> uint32_t {
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return fb_id_;
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}
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private:
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explicit DrmFbIdHandle(DrmDevice &drm) : drm_(&drm){};
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DrmDevice *const drm_;
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uint32_t fb_id_{};
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std::array<GemHandle, kHwcDrmBoMaxPlanes> gem_handles_{};
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};
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class DrmFbImporter {
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public:
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explicit DrmFbImporter(DrmDevice &drm) : drm_(&drm){};
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~DrmFbImporter() = default;
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DrmFbImporter(const DrmFbImporter &) = delete;
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DrmFbImporter(DrmFbImporter &&) = delete;
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auto operator=(const DrmFbImporter &) = delete;
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auto operator=(DrmFbImporter &&) = delete;
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auto GetOrCreateFbId(hwc_drm_bo_t *bo) -> std::shared_ptr<DrmFbIdHandle>;
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private:
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void CleanupEmptyCacheElements() {
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for (auto it = drm_fb_id_handle_cache_.begin();
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it != drm_fb_id_handle_cache_.end();) {
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if (it->second.expired()) {
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it = drm_fb_id_handle_cache_.erase(it);
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} else {
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++it;
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}
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}
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}
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DrmDevice *const drm_;
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std::map<GemHandle, std::weak_ptr<DrmFbIdHandle>> drm_fb_id_handle_cache_;
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};
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} // namespace android
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#endif
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