path: root/src/com/android/camera/imageprocessor/filter/UbifocusFilter.java

/*
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package com.android.camera.imageprocessor.filter;

import android.app.ProgressDialog;
import android.content.Context;
import android.graphics.Camera;
import android.graphics.ImageFormat;
import android.graphics.Rect;
import android.graphics.YuvImage;
import android.hardware.camera2.CameraAccessException;
import android.hardware.camera2.CameraCaptureSession;
import android.hardware.camera2.CameraCharacteristics;
import android.hardware.camera2.CaptureRequest;
import android.hardware.camera2.CaptureResult;
import android.os.Handler;
import android.util.Log;
import android.util.Range;

import com.android.camera.CameraActivity;
import com.android.camera.CaptureModule;
import com.android.camera.imageprocessor.PostProcessor;
import com.android.camera.util.CameraUtil;

import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.nio.ByteBuffer;
import java.util.ArrayList;
import java.util.List;

public class UbifocusFilter implements ImageFilter {
    public static final int NUM_REQUIRED_IMAGE = 5;
    private int mWidth;
    private int mHeight;
    private int mStrideY;
    private int mStrideVU;
    private static String TAG = "UbifocusFilter";
    private static final boolean DEBUG = true;
    private static final int FOCUS_ADJUST_TIME_OUT = 200;
    private static final int META_BYTES_SIZE = 25;
    private int temp;
    private static boolean mIsSupported = true;
    private ByteBuffer mOutBuf;
    private CaptureModule mModule;
    private CameraActivity mActivity;
    private int mOrientation = 0;
    private float mMinFocusDistance = -1f;
    final String[] NAMES = {"00.jpg", "01.jpg", "02.jpg", "03.jpg",
            "04.jpg", "DepthMapImage.y", "AllFocusImage.jpg"};

    private static void Log(String msg) {
        if (DEBUG) {
            Log.d(TAG, msg);
        }
    }

    public UbifocusFilter(CaptureModule module, CameraActivity activity) {
        mModule = module;
        mActivity = activity;
    }

    @Override
    public List<CaptureRequest> setRequiredImages(CaptureRequest.Builder builder) {
        return null;
    }

    @Override
    public String getStringName() {
        return "UbifocusFilter";
    }

    @Override
    public int getNumRequiredImage() {
        return NUM_REQUIRED_IMAGE;
    }

    @Override
    public void init(int width, int height, int strideY, int strideVU) {
        Log("init");
        mWidth = width/2*2;
        mHeight = height/2*2;
        mStrideY = strideY/2*2;
        mStrideVU = strideVU/2*2;
        mOutBuf = ByteBuffer.allocate(mStrideY * mHeight * 3 / 2);
        Log("width: "+mWidth+" height: "+mHeight+" strideY: "+mStrideY+" strideVU: "+mStrideVU);
        nativeInit(mWidth, mHeight, mStrideY, mStrideVU, NUM_REQUIRED_IMAGE);
    }

    @Override
    public void deinit() {
        Log("deinit");
        mOutBuf = null;
        nativeDeinit();
    }

    @Override
    public void addImage(ByteBuffer bY, ByteBuffer bVU, int imageNum, Object param) {
        Log("addImage");
        if(imageNum == 0) {
            mModule.setRefocusLastTaken(false);
            mOrientation = CameraUtil.getJpegRotation(mModule.getMainCameraId(), mModule.getDisplayOrientation());
        }
        saveToPrivateFile(imageNum, nv21ToJpeg(bY, bVU, new Rect(0, 0, mWidth, mHeight), mOrientation));
        int yActualSize = bY.remaining();
        int vuActualSize = bVU.remaining();
        if(nativeAddImage(bY, bVU, yActualSize, vuActualSize, imageNum) < 0) {
            Log.e(TAG, "Fail to add image");
        }
    }

    @Override
    public ResultImage processImage() {
        Log("processImage ");
        int[] roi = new int[4];
        int[] depthMapSize = new int[2];
        int status = nativeProcessImage(mOutBuf.array(), roi, depthMapSize);
        if(status < 0) { //In failure case, library will return the first image as it is.
            Log.w(TAG, "Fail to process the "+getStringName());
        } else {
            byte[] depthMapBuf = new byte[depthMapSize[0] * depthMapSize[1] + META_BYTES_SIZE];
            nativeGetDepthMap(depthMapBuf, depthMapSize[0], depthMapSize[1]);
            saveToPrivateFile(NAMES.length - 2, depthMapBuf);
            saveToPrivateFile(NAMES.length - 1, nv21ToJpeg(mOutBuf, null, new Rect(roi[0], roi[1], roi[0] + roi[2], roi[1] + roi[3]), mOrientation));
            mModule.setRefocusLastTaken(true);
        }

        ResultImage result = new ResultImage(mOutBuf, new Rect(roi[0], roi[1], roi[0]+roi[2], roi[1] + roi[3]), mWidth, mHeight, mStrideY);
        Log("processImage done");
        return result;
    }

    @Override
    public boolean isSupported() {
        return mIsSupported;
    }

    @Override
    public boolean isFrameListener() {
        return false;
    }

    @Override
    public boolean isManualMode() {
        return true;
    }

    @Override
    public void manualCapture(CaptureRequest.Builder builder, CameraCaptureSession captureSession,
                              CameraCaptureSession.CaptureCallback callback, Handler handler) throws CameraAccessException {
        if (mMinFocusDistance == -1f) {
            mMinFocusDistance = mModule.getMainCameraCharacteristics().get(CameraCharacteristics.LENS_INFO_MINIMUM_FOCUS_DISTANCE);
        }
        float step = mMinFocusDistance / NUM_REQUIRED_IMAGE;
        for(int i=0; i < NUM_REQUIRED_IMAGE; i++) {
            float value = (i * step);
            mModule.setAFModeToPreview(mModule.getMainCameraId(), CaptureRequest.CONTROL_AF_MODE_OFF);
            mModule.setFocusDistanceToPreview(mModule.getMainCameraId(), value);
            try {
                int count = FOCUS_ADJUST_TIME_OUT;
                do {
                    Thread.sleep(5);
                    count -= 5;
                    if(count <= 0) {
                        break;
                    }
                } while(Math.abs(mModule.getPreviewCaptureResult().get(CaptureResult.LENS_FOCUS_DISTANCE)
                        - value) >= 0.5f);
            } catch (InterruptedException e) {
            }
            builder.set(CaptureRequest.CONTROL_AF_MODE, CaptureRequest.CONTROL_AF_MODE_OFF);
            builder.set(CaptureRequest.LENS_FOCUS_DISTANCE, value);
            captureSession.capture(builder.build(), callback, handler);
            Log.d(TAG, "Request:  " + value);
        }
    }

    public static boolean isSupportedStatic() {
        return mIsSupported;
    }

    private byte[] nv21ToJpeg(ByteBuffer bY, ByteBuffer bVU, Rect roi, int orientation) {
        ByteBuffer buf =  ByteBuffer.allocate(mStrideY*mHeight*3/2);
        buf.put(bY);
        bY.rewind();
        if(bVU != null) {
            buf.put(bVU);
            bVU.rewind();
        }
        BitmapOutputStream bos = new BitmapOutputStream(1024);
        YuvImage im = new YuvImage(buf.array(), ImageFormat.NV21,
                mWidth, mHeight, new int[]{mStrideY, mStrideVU});
        im.compressToJpeg(roi, 50, bos);
        byte[] bytes = bos.getArray();
        bytes = PostProcessor.addExifTags(bytes, orientation);
        return bytes;
    }

    private class BitmapOutputStream extends ByteArrayOutputStream {
        public BitmapOutputStream(int size) {
            super(size);
        }

        public byte[] getArray() {
            return buf;
        }
    }

    private void saveToPrivateFile(final int index, final byte[] bytes) {
        new Thread() {
            public void run() {
                String filesPath = mActivity.getFilesDir()+"/Ubifocus";
                File file = new File(filesPath);
                if(!file.exists()) {
                    file.mkdir();
                }
                file = new File(filesPath+"/"+NAMES[index]);
                try {
                    FileOutputStream out = new FileOutputStream(file);
                    out.write(bytes, 0, bytes.length);
                    out.close();
                } catch (Exception e) {
                }
            }
        }.start();
    }

    private native int nativeInit(int width, int height, int yStride, int vuStride, int numImages);
    private native int nativeDeinit();
    private native int nativeAddImage(ByteBuffer yB, ByteBuffer vuB, int ySize, int vuSize, int imageNum);
    private native int nativeGetDepthMap(byte[] depthMapBuf, int depthMapWidth, int depthMapHeight);
    private native int nativeProcessImage(byte[] buffer, int[] roi, int[] depthMapSize);

    static {
        try {
            System.loadLibrary("jni_ubifocus");
            mIsSupported = true;
        }catch(UnsatisfiedLinkError e) {
            mIsSupported = false;
        }
    }
}