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