| // Copyright 2019 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef MEDIA_CAPTURE_VIDEO_CHROMEOS_VENDOR_TAG_OPS_DELEGATE_H_ |
| #define MEDIA_CAPTURE_VIDEO_CHROMEOS_VENDOR_TAG_OPS_DELEGATE_H_ |
| |
| #include <map> |
| #include <string> |
| #include <vector> |
| |
| #include "base/synchronization/lock.h" |
| #include "media/capture/video/chromeos/mojom/camera_common.mojom.h" |
| #include "mojo/public/cpp/bindings/pending_receiver.h" |
| #include "mojo/public/cpp/bindings/remote.h" |
| #include "third_party/abseil-cpp/absl/types/optional.h" |
| |
| namespace media { |
| |
| struct VendorTagInfo { |
| cros::mojom::CameraMetadataTag tag; |
| std::string section_name; |
| std::string tag_name; |
| cros::mojom::EntryType type; |
| }; |
| |
| class VendorTagOpsDelegate { |
| public: |
| VendorTagOpsDelegate( |
| scoped_refptr<base::SingleThreadTaskRunner> ipc_task_runner); |
| ~VendorTagOpsDelegate(); |
| |
| // Setups/Teardowns the VendorTagOpsDelegate instance. All methods here should |
| // be called on |ipc_task_runner_|. |
| mojo::PendingReceiver<cros::mojom::VendorTagOps> MakeReceiver(); |
| void Initialize(); |
| void Reset(); |
| |
| // Gets the info by name or tag after |inited_|. The returned pointer is still |
| // owned by VendorTagOpsDelegate. Returns nullptr if not found. These |
| // functions can be called concurrently on different threads. |
| const VendorTagInfo* GetInfoByName(const std::string& full_name); |
| const VendorTagInfo* GetInfoByTag(cros::mojom::CameraMetadataTag tag); |
| |
| private: |
| void StopInitialization(); |
| void RemovePending(uint32_t tag); |
| |
| void OnGotTagCount(int32_t tag_count); |
| void OnGotAllTags(size_t tag_count, const std::vector<uint32_t>& tags); |
| void OnGotSectionName(uint32_t tag, |
| const absl::optional<std::string>& section_name); |
| void OnGotTagName(uint32_t tag, const absl::optional<std::string>& tag_name); |
| void OnGotTagType(uint32_t tag, int32_t type); |
| |
| scoped_refptr<base::SequencedTaskRunner> ipc_task_runner_; |
| mojo::Remote<cros::mojom::VendorTagOps> vendor_tag_ops_; |
| |
| // The paritally initialized tags. A tag with its info would be moved to |
| // |name_map_| and |tag_map_| once it's fully initialized. The |inited_| event |
| // would be signaled when |pending_info_| is empty. |
| std::map<uint32_t, VendorTagInfo> pending_info_; |
| |
| // These maps are read-only after |inited_|. |
| std::map<std::string, VendorTagInfo> name_map_; |
| std::map<cros::mojom::CameraMetadataTag, VendorTagInfo> tag_map_; |
| |
| base::WaitableEvent initialized_; |
| |
| base::Lock lock_; |
| bool is_initializing_ GUARDED_BY(lock_); |
| }; |
| |
| } // namespace media |
| |
| #endif // MEDIA_CAPTURE_VIDEO_CHROMEOS_VENDOR_TAG_OPS_DELEGATE_H_ |