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 
29 namespace android {
30 
31 class Camera2Client;
32 class CameraDeviceBase;
33 class MemoryHeapBase;
34 
35 namespace camera2 {
36 
37 class CaptureSequencer;
38 class Parameters;
39 
40 /***
41  * Still image capture output image processing
42  */
43 class 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(const BufferItem& item);
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<Surface>        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