| /* |
| * Copyright (C) 2019 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. |
| */ |
| |
| #ifndef HARDWARE_GOOGLE_CAMERA_HAL_UTILS_ZSL_RESULT_DISPATCHER_H_ |
| #define HARDWARE_GOOGLE_CAMERA_HAL_UTILS_ZSL_RESULT_DISPATCHER_H_ |
| |
| #include <map> |
| #include <thread> |
| |
| #include "hal_types.h" |
| #include "result_dispatcher.h" |
| |
| namespace android { |
| namespace google_camera_hal { |
| |
| // ZslResultDispatcher dispatches capture results of zsl requests and none-zsl |
| // requests in the order of frame numbers, including result metadata, shutters, |
| // and stream buffers. |
| // |
| // The client can add results and shutters via AddResult() and AddShutter() in |
| // any order. ZslResultDispatcher will invoke ProcessCaptureResultFunc and |
| // NotifyFunc to notify result metadata, shutters, and stream buffers in the |
| // in the order of increasing frame numbers. |
| class ZslResultDispatcher { |
| public: |
| // Create a ZslResultDispatcher. |
| // partial_result_count is the partial result count. |
| // process_capture_result is the function to notify capture results. |
| // notify is the function to notify shutter messages. |
| // Treat ZSL requests and normal requests separately. |
| // For ZSL requests, it returns zsl shutter and zsl results in order |
| // and is not blocked by normal shutter and results. |
| static std::unique_ptr<ZslResultDispatcher> Create( |
| uint32_t partial_result_count, |
| ProcessCaptureResultFunc process_capture_result, NotifyFunc notify); |
| |
| virtual ~ZslResultDispatcher() = default; |
| |
| // Add a pending request. This tells ZslResultDispatcher to watch for |
| // the shutter, result metadata, and stream buffers for this request, |
| // that will be added later via AddResult() and AddShutter(). |
| // Treat the request as zsl request if is_zsl_request is true |
| status_t AddPendingRequest(const CaptureRequest& pending_request, |
| bool is_zsl_request); |
| |
| // Add a ready result. If the result doesn't belong to a pending request that |
| // was previously added via AddPendingRequest(), an error will be returned. |
| status_t AddResult(std::unique_ptr<CaptureResult> result); |
| |
| // Add a shutter for a frame number. If the frame number doesn't belong to a |
| // pending request that was previously added via AddPendingRequest(), an error |
| // will be returned. |
| status_t AddShutter(uint32_t frame_number, int64_t timestamp_ns, |
| int64_t readout_timestamp_ns); |
| |
| // Add an error notification for a frame number. When this is called, we no |
| // longer wait for a shutter message or result metadata for the given frame. |
| status_t AddError(const ErrorMessage& error); |
| |
| // Remove a pending request. |
| void RemovePendingRequest(uint32_t frame_number); |
| |
| protected: |
| ZslResultDispatcher(ProcessCaptureResultFunc process_capture_result, |
| NotifyFunc notify); |
| |
| private: |
| status_t Initialize(uint32_t partial_result_count); |
| |
| // Invoked when receiving a result from ResultDispatcher class. |
| void ProcessCaptureResult(std::unique_ptr<CaptureResult> result); |
| |
| // Invoked when receiving a message from ResultDispatcher. |
| void NotifyHalMessage(const NotifyMessage& message); |
| |
| // Return true if this frame is zsl request. |
| bool IsZslFrame(uint32_t frame_number); |
| |
| std::unique_ptr<ResultDispatcher> normal_result_dispatcher_; |
| std::unique_ptr<ResultDispatcher> zsl_result_dispatcher_; |
| |
| std::mutex process_capture_result_lock_; |
| // The following callbacks must be protected by process_capture_result_lock_. |
| // Pass this callback function to ResultDispatcher class |
| ProcessCaptureResultFunc process_capture_result_; |
| |
| std::mutex result_lock_; |
| // The following callbacks must be protected by result_lock_. |
| // Pass this callback function to ResultDispatcher class |
| NotifyFunc notify_; |
| |
| // Record the callback function for framework callback |
| ProcessCaptureResultFunc device_session_process_capture_result_; |
| NotifyFunc device_session_notify_; |
| |
| std::mutex zsl_frames_lock_; |
| // Store the frame number of zsl requests |
| // Protected by zsl_frames_lock_. |
| std::vector<uint32_t> zsl_frames_; |
| }; |
| |
| } // namespace google_camera_hal |
| } // namespace android |
| |
| #endif // HARDWARE_GOOGLE_CAMERA_HAL_UTILS_ZSL_RESULT_DISPATCHER_H_ |