1 /*
2  * Copyright (C) 2021 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *      http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 
17 #ifndef HARDWARE_GOOGLE_CAMERA_HAL_GOOGLE_CAMERA_HAL_SNAPSHOT_RESULT_PROCESSOR_H_
18 #define HARDWARE_GOOGLE_CAMERA_HAL_GOOGLE_CAMERA_HAL_SNAPSHOT_RESULT_PROCESSOR_H_
19 
20 #include "internal_stream_manager.h"
21 #include "result_processor.h"
22 
23 namespace android {
24 namespace google_camera_hal {
25 
26 // SnapshotResultProcessor implements a ResultProcessor that return
27 // yuv buffer to internal stream manager and forwards the results without
28 // yuv buffer to its callback functions.
29 class SnapshotResultProcessor : public ResultProcessor {
30  public:
31   static std::unique_ptr<SnapshotResultProcessor> Create(
32       InternalStreamManager* internal_stream_manager, int32_t yuv_stream_id);
33 
34   virtual ~SnapshotResultProcessor() = default;
35 
36   // Override functions of ResultProcessor start.
37   void SetResultCallback(ProcessCaptureResultFunc process_capture_result,
38                          NotifyFunc notify) override;
39 
40   status_t AddPendingRequests(
41       const std::vector<ProcessBlockRequest>& process_block_requests,
42       const CaptureRequest& remaining_session_request) override;
43 
44   // Return yuv buffer to internal stream manager and forwards the results
45   // without yuv buffer to its callback functions.
46   void ProcessResult(ProcessBlockResult block_result) override;
47 
48   void Notify(const ProcessBlockNotifyMessage& block_message) override;
49 
50   status_t FlushPendingRequests() override;
51   // Override functions of ResultProcessor end.
52 
53  protected:
54   SnapshotResultProcessor(InternalStreamManager* internal_stream_manager,
55                           int32_t yuv_stream_id);
56 
57  private:
58   std::mutex callback_lock_;
59 
60   // The following callbacks must be protected by callback_lock_.
61   ProcessCaptureResultFunc process_capture_result_;
62   NotifyFunc notify_;
63 
64   InternalStreamManager* internal_stream_manager_ = nullptr;
65   int32_t yuv_stream_id_ = -1;
66 };
67 
68 }  // namespace google_camera_hal
69 }  // namespace android
70 
71 #endif  // HARDWARE_GOOGLE_CAMERA_HAL_GOOGLE_CAMERA_HAL_SNAPSHOT_RESULT_PROCESSOR_H_