ZslProcessor3.h revision 7b82efe7a376c882f8f938e1c41b8311a8cdda4a 
1/*
2 * Copyright (C) 2013 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_ZSLPROCESSOR3_H
18#define ANDROID_SERVERS_CAMERA_CAMERA2_ZSLPROCESSOR3_H
19
20#include <utils/Thread.h>
21#include <utils/String16.h>
22#include <utils/Vector.h>
23#include <utils/Mutex.h>
24#include <utils/Condition.h>
25#include <gui/BufferItemConsumer.h>
26#include <camera/CameraMetadata.h>
27
28#include "api1/client2/FrameProcessor.h"
29#include "api1/client2/ZslProcessorInterface.h"
30#include "device3/Camera3ZslStream.h"
31
32namespace android {
33
34class Camera2Client;
35
36namespace camera2 {
37
38class CaptureSequencer;
39class Parameters;
40
41/***
42 * ZSL queue processing
43 */
44class ZslProcessor3 :
45                    public ZslProcessorInterface,
46                    public camera3::Camera3StreamBufferListener,
47            virtual public Thread,
48            virtual public FrameProcessor::FilteredListener {
49  public:
50    ZslProcessor3(sp<Camera2Client> client, wp<CaptureSequencer> sequencer);
51    ~ZslProcessor3();
52
53    // From FrameProcessor
54    virtual void onFrameAvailable(int32_t frameId, const CameraMetadata &frame);
55
56    /**
57     ****************************************
58     * ZslProcessorInterface implementation *
59     ****************************************
60     */
61
62    virtual status_t updateStream(const Parameters &params);
63    virtual status_t deleteStream();
64    virtual int getStreamId() const;
65
66    virtual status_t pushToReprocess(int32_t requestId);
67    virtual status_t clearZslQueue();
68
69    void dump(int fd, const Vector<String16>& args) const;
70
71  protected:
72    /**
73     **********************************************
74     * Camera3StreamBufferListener implementation *
75     **********************************************
76     */
77    typedef camera3::Camera3StreamBufferListener::BufferInfo BufferInfo;
78    // Buffer was acquired by the HAL
79    virtual void onBufferAcquired(const BufferInfo& bufferInfo);
80    // Buffer was released by the HAL
81    virtual void onBufferReleased(const BufferInfo& bufferInfo);
82
83  private:
84    static const nsecs_t kWaitDuration = 10000000; // 10 ms
85
86    enum {
87        RUNNING,
88        LOCKED
89    } mState;
90
91    wp<Camera2Client> mClient;
92    wp<CaptureSequencer> mSequencer;
93
94    const int mId;
95
96    mutable Mutex mInputMutex;
97
98    enum {
99        NO_STREAM = -1
100    };
101
102    int mZslStreamId;
103    sp<camera3::Camera3ZslStream> mZslStream;
104
105    struct ZslPair {
106        BufferItemConsumer::BufferItem buffer;
107        CameraMetadata frame;
108    };
109
110    static const size_t kZslBufferDepth = 4;
111    static const size_t kFrameListDepth = kZslBufferDepth * 2;
112    Vector<CameraMetadata> mFrameList;
113    size_t mFrameListHead;
114
115    ZslPair mNextPair;
116
117    Vector<ZslPair> mZslQueue;
118    size_t mZslQueueHead;
119    size_t mZslQueueTail;
120
121    CameraMetadata mLatestCapturedRequest;
122
123    virtual bool threadLoop();
124
125    status_t clearZslQueueLocked();
126
127    void dumpZslQueue(int id) const;
128
129    nsecs_t getCandidateTimestampLocked(size_t* metadataIdx) const;
130};
131
132
133}; //namespace camera2
134}; //namespace android
135
136#endif
137