JpegProcessor.h revision 7b82efe7a376c882f8f938e1c41b8311a8cdda4a 
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_JPEGPROCESSOR_H
18#define ANDROID_SERVERS_CAMERA_CAMERA2_JPEGPROCESSOR_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
27#include "camera/CameraMetadata.h"
28
29namespace android {
30
31class Camera2Client;
32class CameraDeviceBase;
33class MemoryHeapBase;
34
35namespace camera2 {
36
37class CaptureSequencer;
38class Parameters;
39
40/***
41 * Still image capture output image processing
42 */
43class JpegProcessor:
44            public Thread, public CpuConsumer::FrameAvailableListener {
45  public:
46    JpegProcessor(sp<Camera2Client> client, wp<CaptureSequencer> sequencer);
47    ~JpegProcessor();
48
49    // CpuConsumer listener implementation
50    void onFrameAvailable();
51
52    status_t updateStream(const Parameters &params);
53    status_t deleteStream();
54    int getStreamId() const;
55
56    void dump(int fd, const Vector<String16>& args) const;
57  private:
58    static const nsecs_t kWaitDuration = 10000000; // 10 ms
59    wp<CameraDeviceBase> mDevice;
60    wp<CaptureSequencer> mSequencer;
61    int mId;
62
63    mutable Mutex mInputMutex;
64    bool mCaptureAvailable;
65    Condition mCaptureAvailableSignal;
66
67    enum {
68        NO_STREAM = -1
69    };
70
71    int mCaptureStreamId;
72    sp<CpuConsumer>    mCaptureConsumer;
73    sp<ANativeWindow>  mCaptureWindow;
74    sp<MemoryHeapBase>    mCaptureHeap;
75
76    virtual bool threadLoop();
77
78    status_t processNewCapture();
79    size_t findJpegSize(uint8_t* jpegBuffer, size_t maxSize);
80
81};
82
83
84}; //namespace camera2
85}; //namespace android
86
87#endif
88