FrameProcessor.h revision cb0652e5a850b2fcd919e977247e87239efaf70e 
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
29struct camera_frame_metadata;
30
31namespace android {
32
33class Camera2Client;
34
35namespace camera2 {
36
37/* Output frame metadata processing thread.  This thread waits for new
38 * frames from the device, and analyzes them as necessary.
39 */
40class 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 CameraMetadata &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
83        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 quirk is enabled for this device
95    bool mUsePartialQuirk;
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