CallbackProcessor.h revision da6665cbd06ca58d3357c3002b7366d13e23f152 
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_CALLBACKPROCESSOR_H
18#define ANDROID_SERVERS_CAMERA_CAMERA2_CALLBACKPROCESSOR_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/CpuConsumer.h>
26#include "Parameters.h"
27#include "CameraMetadata.h"
28#include "Camera2Heap.h"
29
30namespace android {
31
32class Camera2Client;
33
34namespace camera2 {
35
36/***
37 * Still image capture output image processing
38 */
39class CallbackProcessor:
40            public Thread, public CpuConsumer::FrameAvailableListener {
41  public:
42    CallbackProcessor(wp<Camera2Client> client);
43    ~CallbackProcessor();
44
45    void onFrameAvailable();
46
47    status_t updateStream(const Parameters &params);
48    status_t deleteStream();
49    int getStreamId() const;
50
51    void dump(int fd, const Vector<String16>& args) const;
52  private:
53    static const nsecs_t kWaitDuration = 10000000; // 10 ms
54    wp<Camera2Client> mClient;
55
56    mutable Mutex mInputMutex;
57    bool mCallbackAvailable;
58    Condition mCallbackAvailableSignal;
59
60    enum {
61        NO_STREAM = -1
62    };
63
64    int mCallbackStreamId;
65    static const size_t kCallbackHeapCount = 6;
66    sp<CpuConsumer>    mCallbackConsumer;
67    sp<ANativeWindow>  mCallbackWindow;
68    sp<Camera2Heap>    mCallbackHeap;
69    int mCallbackHeapId;
70    size_t mCallbackHeapHead, mCallbackHeapFree;
71
72    virtual bool threadLoop();
73
74    status_t processNewCallback(sp<Camera2Client> &client);
75
76};
77
78
79}; //namespace camera2
80}; //namespace android
81
82#endif
83