1 /*
2  * Copyright (C) 2012 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 ANDROID_SERVERS_CAMERA_CAMERA2_FRAMEPROCESSOR_H
18 #define ANDROID_SERVERS_CAMERA_CAMERA2_FRAMEPROCESSOR_H
19 
20 #include <utils/Thread.h>
21 #include <utils/String16.h>
22 #include <utils/Vector.h>
23 #include <utils/KeyedVector.h>
24 #include <utils/List.h>
25 #include <camera/CameraMetadata.h>
26 
27 #include "common/FrameProcessorBase.h"
28 
29 struct camera_frame_metadata;
30 
31 namespace android {
32 
33 class Camera2Client;
34 
35 namespace camera2 {
36 
37 /* Output frame metadata processing thread.  This thread waits for new
38  * frames from the device, and analyzes them as necessary.
39  */
40 class FrameProcessor : public FrameProcessorBase {
41   public:
42     FrameProcessor(wp<CameraDeviceBase> device, sp<Camera2Client> client);
43     ~FrameProcessor();
44 
45   private:
46     wp<Camera2Client> mClient;
47 
48     bool mSynthesize3ANotify;
49 
50     int mLastFrameNumberOfFaces;
51 
52     void processNewFrames(const sp<Camera2Client> &client);
53 
54     virtual bool processSingleFrame(CaptureResult &frame,
55                                     const sp<CameraDeviceBase> &device);
56 
57     status_t processFaceDetect(const CameraMetadata &frame,
58             const sp<Camera2Client> &client);
59 
60     // Send 3A state change notifications to client based on frame metadata
61     status_t process3aState(const CaptureResult &frame,
62             const sp<Camera2Client> &client);
63 
64     // Helper for process3aState
65     template<typename Src, typename T>
66     bool get3aResult(const CameraMetadata& result, int32_t tag, T* value,
67             int32_t frameNumber, int cameraId);
68 
69 
70     struct AlgState {
71         // TODO: also track AE mode
72         camera_metadata_enum_android_control_af_mode   afMode;
73         camera_metadata_enum_android_control_awb_mode  awbMode;
74 
75         camera_metadata_enum_android_control_ae_state  aeState;
76         camera_metadata_enum_android_control_af_state  afState;
77         camera_metadata_enum_android_control_awb_state awbState;
78 
79         int32_t                                        afTriggerId;
80         int32_t                                        aeTriggerId;
81 
82         // These defaults need to match those in Parameters.cpp
AlgStateAlgState83         AlgState() :
84                 afMode(ANDROID_CONTROL_AF_MODE_AUTO),
85                 awbMode(ANDROID_CONTROL_AWB_MODE_AUTO),
86                 aeState(ANDROID_CONTROL_AE_STATE_INACTIVE),
87                 afState(ANDROID_CONTROL_AF_STATE_INACTIVE),
88                 awbState(ANDROID_CONTROL_AWB_STATE_INACTIVE),
89                 afTriggerId(0),
90                 aeTriggerId(0) {
91         }
92     } m3aState;
93 
94     // Whether the partial result is enabled for this device
95     bool mUsePartialResult;
96 
97     // Track most recent frame number for which 3A notifications were sent for.
98     // Used to filter against sending 3A notifications for the same frame
99     // several times.
100     int32_t mLast3AFrameNumber;
101 
102     // Emit FaceDetection event to java if faces changed
103     void callbackFaceDetection(sp<Camera2Client> client,
104                                const camera_frame_metadata &metadata);
105 };
106 
107 
108 }; //namespace camera2
109 }; //namespace android
110 
111 #endif
112