Android Camera2 API من إبريق الشاي ، الجزء 2 ، كتابة فيديو

أحد الأسباب التي تجعل Camera2 في حيرة هو عدد مرات معاودة الاتصال التي تحتاج إلى استخدامها لالتقاط طلقة واحدة.

private CameraManager mCameraManager = null; private final int CAMERA1 = 0; protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); Log.d(LOG_TAG, " "); if (checkSelfPermission(Manifest.permission.CAMERA) != PackageManager.PERMISSION_GRANTED || (ContextCompat.checkSelfPermission(MainActivity.this, Manifest.permission.WRITE_EXTERNAL_STORAGE) != PackageManager.PERMISSION_GRANTED) || (ContextCompat.checkSelfPermission(MainActivity.this, Manifest.permission.RECORD_AUDIO) != PackageManager.PERMISSION_GRANTED) ) { requestPermissions(new String[]{Manifest.permission.CAMERA, Manifest.permission.WRITE_EXTERNAL_STORAGE, Manifest.permission.RECORD_AUDIO}, 1); } mCameraManager = (CameraManager) getSystemService(Context.CAMERA_SERVICE); try { //      myCameras = new CameraService[mCameraManager.getCameraIdList().length]; for (String cameraID : mCameraManager.getCameraIdList()) { Log.i(LOG_TAG, "cameraID: " + cameraID); int id = Integer.parseInt(cameraID); //     myCameras[id] = new CameraService(mCameraManager, cameraID); } } catch (CameraAccessException e) { Log.e(LOG_TAG, e.getMessage()); e.printStackTrace(); } public class CameraService { private String mCameraID; private CameraDevice mCameraDevice = null; private CameraCaptureSession mSession; private CaptureRequest.Builder mPreviewBuilder; public CameraService(CameraManager cameraManager, String cameraID) { mCameraManager = cameraManager; mCameraID = cameraID; } private CameraDevice.StateCallback mCameraCallback = new CameraDevice.StateCallback() { @Override public void onOpened(CameraDevice camera) { mCameraDevice = camera; Log.i(LOG_TAG, "Open camera with id:" + mCameraDevice.getId()); //startCameraPreviewSession();        Media Recorder } @Override public void onDisconnected(CameraDevice camera) { mCameraDevice.close(); Log.i(LOG_TAG, "disconnect camera with id:" + mCameraDevice.getId()); mCameraDevice = null; } @Override public void onError(CameraDevice camera, int error) { Log.i(LOG_TAG, "error! camera id:" + camera.getId() + " error:" + error); } }; 

  private void setUpMediaRecorder() { mMediaRecorder = new MediaRecorder(); mMediaRecorder.setAudioSource(MediaRecorder.AudioSource.MIC); mMediaRecorder.setVideoSource(MediaRecorder.VideoSource.SURFACE); mMediaRecorder.setOutputFormat(MediaRecorder.OutputFormat.MPEG_4); mCurrentFile = new File(Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DCIM), "test"+count+".mp4"); mMediaRecorder.setOutputFile(mCurrentFile.getAbsolutePath()); CamcorderProfile profile = CamcorderProfile.get(CamcorderProfile.QUALITY_480P); mMediaRecorder.setVideoFrameRate(profile.videoFrameRate); mMediaRecorder.setVideoSize(profile.videoFrameWidth, profile.videoFrameHeight); mMediaRecorder.setVideoEncodingBitRate(profile.videoBitRate); mMediaRecorder.setVideoEncoder(MediaRecorder.VideoEncoder.H264); mMediaRecorder.setAudioEncoder(MediaRecorder.AudioEncoder.AAC); mMediaRecorder.setAudioEncodingBitRate(profile.audioBitRate); mMediaRecorder.setAudioSamplingRate(profile.audioSampleRate); try { mMediaRecorder.prepare(); Log.i(LOG_TAG, "   "); } catch (Exception e) { Log.i(LOG_TAG, "   "); } } 

 Arrays.asList(surface,mImageReader.getSurface()) 

 (Arrays.asList(surface, mMediaRecorder.getSurface()). 

 package com.example.mediarecorder1; import androidx.appcompat.app.AppCompatActivity; import androidx.core.content.ContextCompat; import android.Manifest; import android.content.Context; import android.content.pm.PackageManager; import android.graphics.SurfaceTexture; import android.hardware.camera2.CameraAccessException; import android.hardware.camera2.CameraCaptureSession; import android.hardware.camera2.CameraDevice; import android.hardware.camera2.CameraManager; import android.hardware.camera2.CaptureRequest; import android.media.CamcorderProfile; import android.os.Bundle; import android.media.MediaRecorder; import android.os.Environment; import android.os.Handler; import android.os.HandlerThread; import android.util.Log; import android.view.Surface; import android.view.TextureView; import android.view.View; import android.widget.Button; import java.io.File; import java.util.Arrays; public class MainActivity extends AppCompatActivity { public static final String LOG_TAG = "myLogs"; CameraService[] myCameras = null; private CameraManager mCameraManager = null; private final int CAMERA1 = 0; private int count =1; private Button mButtonOpenCamera1 = null; private Button mButtonRecordVideo = null; private Button mButtonStopRecordVideo = null; public static TextureView mImageView = null; private HandlerThread mBackgroundThread; private Handler mBackgroundHandler = null; private File mCurrentFile; private MediaRecorder mMediaRecorder = null; private void startBackgroundThread() { mBackgroundThread = new HandlerThread("CameraBackground"); mBackgroundThread.start(); mBackgroundHandler = new Handler(mBackgroundThread.getLooper()); } private void stopBackgroundThread() { mBackgroundThread.quitSafely(); try { mBackgroundThread.join(); mBackgroundThread = null; mBackgroundHandler = null; } catch (InterruptedException e) { e.printStackTrace(); } } protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); Log.d(LOG_TAG, " "); if (checkSelfPermission(Manifest.permission.CAMERA) != PackageManager.PERMISSION_GRANTED || (ContextCompat.checkSelfPermission(MainActivity.this, Manifest.permission.WRITE_EXTERNAL_STORAGE) != PackageManager.PERMISSION_GRANTED) || (ContextCompat.checkSelfPermission(MainActivity.this, Manifest.permission.RECORD_AUDIO) != PackageManager.PERMISSION_GRANTED) ) { requestPermissions(new String[]{Manifest.permission.CAMERA, Manifest.permission.WRITE_EXTERNAL_STORAGE, Manifest.permission.RECORD_AUDIO}, 1); } mButtonOpenCamera1 = findViewById(R.id.button1); mButtonRecordVideo = findViewById(R.id.button2); mButtonStopRecordVideo = findViewById(R.id.button3); mImageView = findViewById(R.id.textureView); mButtonOpenCamera1.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { if (myCameras[CAMERA1] != null) { if (!myCameras[CAMERA1].isOpen()) myCameras[CAMERA1].openCamera(); } } }); mButtonRecordVideo.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { if ((myCameras[CAMERA1] != null) & mMediaRecorder != null) { mMediaRecorder.start(); } } }); mButtonStopRecordVideo.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { if ((myCameras[CAMERA1] != null) & (mMediaRecorder != null)) { myCameras[CAMERA1].stopRecordingVideo(); } } }); mCameraManager = (CameraManager) getSystemService(Context.CAMERA_SERVICE); try { //      myCameras = new CameraService[mCameraManager.getCameraIdList().length]; for (String cameraID : mCameraManager.getCameraIdList()) { Log.i(LOG_TAG, "cameraID: " + cameraID); int id = Integer.parseInt(cameraID); //     myCameras[id] = new CameraService(mCameraManager, cameraID); } } catch (CameraAccessException e) { Log.e(LOG_TAG, e.getMessage()); e.printStackTrace(); } setUpMediaRecorder(); } private void setUpMediaRecorder() { mMediaRecorder = new MediaRecorder(); mMediaRecorder.setAudioSource(MediaRecorder.AudioSource.MIC); mMediaRecorder.setVideoSource(MediaRecorder.VideoSource.SURFACE); mMediaRecorder.setOutputFormat(MediaRecorder.OutputFormat.MPEG_4); mCurrentFile = new File(Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DCIM), "test"+count+".mp4"); mMediaRecorder.setOutputFile(mCurrentFile.getAbsolutePath()); CamcorderProfile profile = CamcorderProfile.get(CamcorderProfile.QUALITY_480P); mMediaRecorder.setVideoFrameRate(profile.videoFrameRate); mMediaRecorder.setVideoSize(profile.videoFrameWidth, profile.videoFrameHeight); mMediaRecorder.setVideoEncodingBitRate(profile.videoBitRate); mMediaRecorder.setVideoEncoder(MediaRecorder.VideoEncoder.H264); mMediaRecorder.setAudioEncoder(MediaRecorder.AudioEncoder.AAC); mMediaRecorder.setAudioEncodingBitRate(profile.audioBitRate); mMediaRecorder.setAudioSamplingRate(profile.audioSampleRate); try { mMediaRecorder.prepare(); Log.i(LOG_TAG, "   "); } catch (Exception e) { Log.i(LOG_TAG, "   "); } } public class CameraService { private String mCameraID; private CameraDevice mCameraDevice = null; private CameraCaptureSession mSession; private CaptureRequest.Builder mPreviewBuilder; public CameraService(CameraManager cameraManager, String cameraID) { mCameraManager = cameraManager; mCameraID = cameraID; } private CameraDevice.StateCallback mCameraCallback = new CameraDevice.StateCallback() { @Override public void onOpened(CameraDevice camera) { mCameraDevice = camera; Log.i(LOG_TAG, "Open camera with id:" + mCameraDevice.getId()); startCameraPreviewSession(); } @Override public void onDisconnected(CameraDevice camera) { mCameraDevice.close(); Log.i(LOG_TAG, "disconnect camera with id:" + mCameraDevice.getId()); mCameraDevice = null; } @Override public void onError(CameraDevice camera, int error) { Log.i(LOG_TAG, "error! camera id:" + camera.getId() + " error:" + error); } }; private void startCameraPreviewSession() { SurfaceTexture texture = mImageView.getSurfaceTexture(); texture.setDefaultBufferSize(640, 480); Surface surface = new Surface(texture); try { mPreviewBuilder = mCameraDevice.createCaptureRequest(CameraDevice.TEMPLATE_RECORD); /**Surface for the camera preview set up*/ mPreviewBuilder.addTarget(surface); /**MediaRecorder setup for surface*/ Surface recorderSurface = mMediaRecorder.getSurface(); mPreviewBuilder.addTarget(recorderSurface); mCameraDevice.createCaptureSession(Arrays.asList(surface, mMediaRecorder.getSurface()), new CameraCaptureSession.StateCallback() { @Override public void onConfigured(CameraCaptureSession session) { mSession = session; try { mSession.setRepeatingRequest(mPreviewBuilder.build(), null, mBackgroundHandler); } catch (CameraAccessException e) { e.printStackTrace(); } } @Override public void onConfigureFailed(CameraCaptureSession session) { } }, mBackgroundHandler); } catch (CameraAccessException e) { e.printStackTrace(); } } public void stopRecordingVideo() { try { mSession.stopRepeating(); mSession.abortCaptures(); mSession.close(); } catch (CameraAccessException e) { e.printStackTrace(); } mMediaRecorder.stop(); mMediaRecorder.release(); count++; setUpMediaRecorder(); startCameraPreviewSession(); } public boolean isOpen() { if (mCameraDevice == null) { return false; } else { return true; } } public void openCamera() { try { if (checkSelfPermission(Manifest.permission.CAMERA) == PackageManager.PERMISSION_GRANTED) { mCameraManager.openCamera(mCameraID, mCameraCallback, mBackgroundHandler); } } catch (CameraAccessException e) { Log.i(LOG_TAG, e.getMessage()); } } } @Override public void onPause() { stopBackgroundThread(); super.onPause(); } @Override public void onResume() { super.onResume(); startBackgroundThread(); } } 

 <?xml version="1.0" encoding="utf-8"?> <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:app="http://schemas.android.com/apk/res-auto" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" tools:context=".MainActivity"> <TextureView android:id="@+id/textureView" android:layout_width="356dp" android:layout_height="410dp" android:layout_marginTop="32dp" app:layout_constraintEnd_toEndOf="parent" app:layout_constraintHorizontal_bias="0.49" app:layout_constraintStart_toStartOf="parent" app:layout_constraintTop_toTopOf="parent" /> <LinearLayout android:layout_width="292dp" android:layout_height="145dp" android:layout_marginStart="16dp" android:orientation="vertical" app:layout_constraintBottom_toBottomOf="parent" app:layout_constraintEnd_toEndOf="parent" app:layout_constraintStart_toStartOf="parent" app:layout_constraintTop_toBottomOf="@+id/textureView" app:layout_constraintVertical_bias="0.537"> <Button android:id="@+id/button1" android:layout_width="match_parent" android:layout_height="wrap_content" android:text=" " /> <Button android:id="@+id/button2" android:layout_width="match_parent" android:layout_height="wrap_content" android:text=" " /> <Button android:id="@+id/button3" android:layout_width="match_parent" android:layout_height="wrap_content" android:text=" " /> </LinearLayout> </androidx.constraintlayout.widget.ConstraintLayout> 

 <uses-permission android:name="android.permission.RECORD_AUDIO"/>