package com.lzx.lock.module.camera;
import android.Manifest;
import android.app.Fragment;
import android.content.Context;
import android.content.pm.PackageManager;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.ImageFormat;
import android.graphics.Rect;
import android.graphics.SurfaceTexture;
import android.hardware.camera2.CameraAccessException;
import android.hardware.camera2.CameraCaptureSession;
import android.hardware.camera2.CameraCharacteristics;
import android.hardware.camera2.CameraDevice;
import android.hardware.camera2.CameraManager;
import android.hardware.camera2.CameraMetadata;
import android.hardware.camera2.CaptureRequest;
import android.hardware.camera2.params.StreamConfigurationMap;
import android.media.AudioAttributes;
import android.media.Image;
import android.media.ImageReader;
import android.media.Ringtone;
import android.media.RingtoneManager;
import android.net.Uri;
import android.os.Bundle;
import android.os.Environment;
import android.os.Handler;
import android.os.HandlerThread;
import android.os.Message;
import android.support.annotation.Nullable;
import android.support.v4.app.ActivityCompat;
import android.util.Log;
import android.util.Range;
import android.util.Size;
import android.view.LayoutInflater;
import android.view.MotionEvent;
import android.view.Surface;
import android.view.TextureView;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.Toast;
import com.lzx.lock.R;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.nio.ByteBuffer;
import java.util.Arrays;
import java.util.Collections;
public class Camera2Fragment extends Fragment {
private static final String TAG = "Camera2Fragment";
private static final int SETIMAGE = 1;
private static final int MOVE_FOCK = 2;
TextureView mTextureView;
ImageView mThumbnail;
Button mButton;
Handler mHandler;
Handler mUIHandler;
ImageReader mImageReader;
CaptureRequest.Builder mPreViewBuidler;
CameraCaptureSession mCameraSession;
CameraCharacteristics mCameraCharacteristics;
Ringtone ringtone;
//相机会话的监听器，通过他得到mCameraSession对象，这个对象可以用来发送预览和拍照请求
private CameraCaptureSession.StateCallback mSessionStateCallBack = new CameraCaptureSession
.StateCallback() {
@Override
public void onConfigured(CameraCaptureSession cameraCaptureSession) {
try {
mCameraSession = cameraCaptureSession;
cameraCaptureSession.setRepeatingRequest(mPreViewBuidler.build(), null, mHandler);
} catch (CameraAccessException e) {
e.printStackTrace();
}
}
@Override
public void onConfigureFailed(CameraCaptureSession cameraCaptureSession) {
}
};
private Surface surface;
//打开相机时候的监听器，通过他可以得到相机实例，这个实例可以创建请求建造者
private CameraDevice.StateCallback cameraOpenCallBack = new CameraDevice.StateCallback() {
@Override
public void onOpened(CameraDevice cameraDevice) {
Log.d(TAG, "相机已经打开");
try {
mPreViewBuidler = cameraDevice.createCaptureRequest(CameraDevice.TEMPLATE_PREVIEW);
SurfaceTexture texture = mTextureView.getSurfaceTexture();
texture.setDefaultBufferSize(mPreViewSize.getWidth(), mPreViewSize.getHeight());
surface = new Surface(texture);
mPreViewBuidler.addTarget(surface);
cameraDevice.createCaptureSession(Arrays.asList(surface, mImageReader.getSurface
()), mSessionStateCallBack, mHandler);
} catch (CameraAccessException e) {
e.printStackTrace();
}
}
@Override
public void onDisconnected(CameraDevice cameraDevice) {
Log.d(TAG, "相机连接断开");
}
@Override
public void onError(CameraDevice cameraDevice, int i) {
Log.d(TAG, "相机打开失败");
}
};
private ImageReader.OnImageAvailableListener onImageAvaiableListener = new ImageReader
.OnImageAvailableListener() {
@Override
public void onImageAvailable(ImageReader imageReader) {
mHandler.post(new ImageSaver(imageReader.acquireNextImage()));
}
};
private Size mPreViewSize;
private Rect maxZoomrect;
private int maxRealRadio;
//预览图显示控件的监听器，可以监听这个surface的状态
private TextureView.SurfaceTextureListener mSurfacetextlistener = new TextureView
.SurfaceTextureListener() {
@Override
public void onSurfaceTextureAvailable(SurfaceTexture surfaceTexture, int i, int i1) {
HandlerThread thread = new HandlerThread("Ceamera3");
thread.start();
mHandler = new Handler(thread.getLooper());
CameraManager manager = (CameraManager) getActivity().getSystemService(Context
.CAMERA_SERVICE);
String cameraid = CameraCharacteristics.LENS_FACING_FRONT + "";
try {
mCameraCharacteristics = manager.getCameraCharacteristics(cameraid);
//画面传感器的面积，单位是像素。
maxZoomrect = mCameraCharacteristics.get(CameraCharacteristics
.SENSOR_INFO_ACTIVE_ARRAY_SIZE);
//最大的数字缩放
maxRealRadio = mCameraCharacteristics.get(CameraCharacteristics
.SCALER_AVAILABLE_MAX_DIGITAL_ZOOM).intValue();
picRect = new Rect(maxZoomrect);
StreamConfigurationMap map = mCameraCharacteristics.get(CameraCharacteristics
.SCALER_STREAM_CONFIGURATION_MAP);
Size largest = Collections.max(Arrays.asList(map.getOutputSizes(ImageFormat.JPEG)
), new CompareSizeByArea());
mPreViewSize = map.getOutputSizes(SurfaceTexture.class)[0];
mImageReader = ImageReader.newInstance(largest.getWidth(), largest.getHeight(),
ImageFormat.JPEG, 5);
mImageReader.setOnImageAvailableListener(onImageAvaiableListener, mHandler);
if (ActivityCompat.checkSelfPermission(getActivity(), Manifest.permission.CAMERA) != PackageManager.PERMISSION_GRANTED) {
// TODO: Consider calling
// ActivityCompat#requestPermissions
// here to request the missing permissions, and then overriding
// public void onRequestPermissionsResult(int requestCode, String[] permissions,
// int[] grantResults)
// to handle the case where the user grants the permission. See the documentation
// for ActivityCompat#requestPermissions for more details.
return;
}
manager.openCamera(cameraid, cameraOpenCallBack, mHandler);
//设置点击拍照的监听
mButton.setOnTouchListener(onTouchListener);
} catch (CameraAccessException e) {
e.printStackTrace();
}
}
@Override
public void onSurfaceTextureSizeChanged(SurfaceTexture surfaceTexture, int i, int i1) {
}
@Override
public boolean onSurfaceTextureDestroyed(SurfaceTexture surfaceTexture) {
return false;
}
@Override
public void onSurfaceTextureUpdated(SurfaceTexture surfaceTexture) {
}
};
private View.OnTouchListener onTouchListener = new View.OnTouchListener() {
@Override
public boolean onTouch(View v, MotionEvent event) {
switch (event.getAction()) {
case MotionEvent.ACTION_DOWN:
try {
mCameraSession.setRepeatingRequest(initDngBuilder().build(), null, mHandler);
} catch (CameraAccessException e) {
Toast.makeText(getActivity(), "请求相机权限被拒绝", Toast.LENGTH_SHORT).show();
}
break;
case MotionEvent.ACTION_UP:
try {
updateCameraPreviewSession();
} catch (CameraAccessException e) {
Toast.makeText(getActivity(), "请求相机权限被拒绝", Toast.LENGTH_SHORT).show();
}
break;
}
return true;
}
};
private void updateCameraPreviewSession() throws CameraAccessException {
mPreViewBuidler.set(CaptureRequest.CONTROL_AF_TRIGGER, CameraMetadata.CONTROL_AF_TRIGGER_CANCEL);
mPreViewBuidler.set(CaptureRequest.CONTROL_AE_MODE, CaptureRequest.CONTROL_AE_MODE_ON_AUTO_FLASH);
mCameraSession.setRepeatingRequest(mPreViewBuidler.build(), null, mHandler);
}
/**
* 设置连拍的参数
*
* @return
*/
private CaptureRequest.Builder initDngBuilder() {
CaptureRequest.Builder captureBuilder = null;
try {
captureBuilder = mCameraSession.getDevice().createCaptureRequest(CameraDevice.TEMPLATE_PREVIEW);
captureBuilder.addTarget(mImageReader.getSurface());
captureBuilder.addTarget(surface);
// Required for RAW capture
captureBuilder.set(CaptureRequest.STATISTICS_LENS_SHADING_MAP_MODE, CaptureRequest.STATISTICS_LENS_SHADING_MAP_MODE_ON);
captureBuilder.set(CaptureRequest.CONTROL_AE_MODE, CaptureRequest.CONTROL_AE_MODE_OFF);
captureBuilder.set(CaptureRequest.CONTROL_AF_MODE, CaptureRequest.CONTROL_AF_MODE_CONTINUOUS_PICTURE);
captureBuilder.set(CaptureRequest.SENSOR_EXPOSURE_TIME, (long) ((214735991 - 13231) / 2));
captureBuilder.set(CaptureRequest.CONTROL_AE_EXPOSURE_COMPENSATION, 0);
captureBuilder.set(CaptureRequest.SENSOR_SENSITIVITY, (10000 - 100) / 2);//设置 ISO，感光度
captureBuilder.set(CaptureRequest.JPEG_ORIENTATION, 90);
//设置每秒30帧
CameraManager cameraManager = (CameraManager) getActivity().getSystemService(Context.CAMERA_SERVICE);
String cameraid = CameraCharacteristics.LENS_FACING_FRONT + "";
CameraCharacteristics cameraCharacteristics = cameraManager.getCameraCharacteristics(cameraid);
Range<Integer> fps[] = cameraCharacteristics.get(CameraCharacteristics.CONTROL_AE_AVAILABLE_TARGET_FPS_RANGES);
captureBuilder.set(CaptureRequest.CONTROL_AE_TARGET_FPS_RANGE, fps[fps.length - 1]);
} catch (CameraAccessException e) {
Toast.makeText(getActivity(), "请求相机权限被拒绝", Toast.LENGTH_SHORT).show();
} catch (NullPointerException e) {
Toast.makeText(getActivity(), "打开相机失败", Toast.LENGTH_SHORT).show();
}
return captureBuilder;
}
private View.OnClickListener picOnClickListener = new View.OnClickListener() {
@Override
public void onClick(View view) {
try {
shootSound();
Log.d(TAG, "正在拍照");
CaptureRequest.Builder builder = mCameraSession.getDevice().createCaptureRequest
(CameraDevice.TEMPLATE_STILL_CAPTURE);
builder.addTarget(mImageReader.getSurface());
builder.set(CaptureRequest.SCALER_CROP_REGION, picRect);
builder.set(CaptureRequest.CONTROL_AF_MODE,
CaptureRequest.CONTROL_AF_MODE_EDOF);
// builder.set(CaptureRequest.CONTROL_AF_TRIGGER,
// CameraMetadata.CONTROL_AF_TRIGGER_START);
builder.set(CaptureRequest.JPEG_ORIENTATION, 90);
mCameraSession.capture(builder.build(), null, mHandler);
} catch (CameraAccessException e) {
e.printStackTrace();
}
}
};
private View.OnTouchListener textTureOntuchListener = new View.OnTouchListener() {
//时时当前的zoom
public double zoom;
// 0<缩放比<mCameraCharacteristics.get(CameraCharacteristics
// .SCALER_AVAILABLE_MAX_DIGITAL_ZOOM).intValue();
//上次缩放前的zoom
public double lastzoom;
//两个手刚一起碰到手机屏幕的距离
public double lenth;
int count;
@Override
public boolean onTouch(View v, MotionEvent event) {
switch (event.getAction() & MotionEvent.ACTION_MASK) {
case MotionEvent.ACTION_DOWN:
count = 1;
break;
case MotionEvent.ACTION_MOVE:
if (count >= 2) {
float x1 = event.getX(0);
float y1 = event.getY(0);
float x2 = event.getX(1);
float y2 = event.getY(1);
float x = x1 - x2;
float y = y1 - y2;
Double lenthRec = Math.sqrt(x * x + y * y) - lenth;
Double viewLenth = Math.sqrt(v.getWidth() * v.getWidth() + v.getHeight()
* v.getHeight());
zoom = ((lenthRec / viewLenth) * maxRealRadio) + lastzoom;
picRect.top = (int) (maxZoomrect.top / (zoom));
picRect.left = (int) (maxZoomrect.left / (zoom));
picRect.right = (int) (maxZoomrect.right / (zoom));
picRect.bottom = (int) (maxZoomrect.bottom / (zoom));
Message.obtain(mUIHandler, MOVE_FOCK).sendToTarget();
}
break;
case MotionEvent.ACTION_UP:
count = 0;
break;
case MotionEvent.ACTION_POINTER_DOWN:
count++;
if (count == 2) {
float x1 = event.getX(0);
float y1 = event.getY(0);
float x2 = event.getX(1);
float y2 = event.getY(1);
float x = x1 - x2;
float y = y1 - y2;
lenth = Math.sqrt(x * x + y * y);
}
break;
case MotionEvent.ACTION_POINTER_UP:
count--;
if (count < 2)
lastzoom = zoom;
break;
}
return true;
}
};
//相机缩放相关
private Rect picRect;
@Nullable
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle
savedInstanceState) {
View v = inflater.inflate(R.layout.fragment_camera2, null);
findview(v);
mUIHandler = new Handler(new InnerCallBack());
//初始化拍照的声音
ringtone = RingtoneManager.getRingtone(getActivity(), Uri.parse
("file:///system/media/audio/ui/camera_click.ogg"));
AudioAttributes.Builder attr = new AudioAttributes.Builder();
attr.setContentType(AudioAttributes.CONTENT_TYPE_SONIFICATION);
ringtone.setAudioAttributes(attr.build());
//初始化相机布局
mTextureView.setSurfaceTextureListener(mSurfacetextlistener);
mTextureView.setOnTouchListener(textTureOntuchListener);
return v;
}
@Override
public void onDestroyView() {
super.onDestroyView();
if (mCameraSession != null) {
mCameraSession.getDevice().close();
mCameraSession.close();
}
}
private void findview(View v) {
mTextureView = (TextureView) v.findViewById(R.id.tv_textview);
mButton = (Button) v.findViewById(R.id.btn_takepic);
mThumbnail = (ImageView) v.findViewById(R.id.iv_Thumbnail);
mThumbnail.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Toast.makeText(getActivity(), "别戳了，那个页面还没写", Toast.LENGTH_SHORT).show();
}
});
}
/**
* 播放系统的拍照的声音
*/
public void shootSound() {
ringtone.stop();
ringtone.play();
}
private class ImageSaver implements Runnable {
Image reader;
public ImageSaver(Image reader) {
this.reader = reader;
}
@Override
public void run() {
Log.d(TAG, "正在保存图片");
File dir = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DCIM)
.getAbsoluteFile();
if (!dir.exists()) {
dir.mkdirs();
}
File file = new File(dir, System.currentTimeMillis() + ".jpg");
FileOutputStream outputStream = null;
try {
outputStream = new FileOutputStream(file);
ByteBuffer buffer = reader.getPlanes()[0].getBuffer();
byte[] buff = new byte[buffer.remaining()];
buffer.get(buff);
BitmapFactory.Options ontain = new BitmapFactory.Options();
ontain.inSampleSize = 50;
Bitmap bm = BitmapFactory.decodeByteArray(buff, 0, buff.length, ontain);
Message.obtain(mUIHandler, SETIMAGE, bm).sendToTarget();
outputStream.write(buff);
Log.d(TAG, "保存图片完成");
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
} finally {
if (reader != null) {
reader.close();
}
if (outputStream != null) {
try {
outputStream.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
}
}
private class InnerCallBack implements Handler.Callback {
@Override
public boolean handleMessage(Message message) {
switch (message.what) {
case SETIMAGE:
Bitmap bm = (Bitmap) message.obj;
mThumbnail.setImageBitmap(bm);
break;
case MOVE_FOCK:
mPreViewBuidler.set(CaptureRequest.SCALER_CROP_REGION, picRect);
try {
mCameraSession.setRepeatingRequest(mPreViewBuidler.build(), null,
mHandler);
} catch (CameraAccessException e) {
e.printStackTrace();
}
break;
}
return false;
}
}
}