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MediaUtils.java
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MediaUtils.java
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package com.werb.mediautilsdemo;
import android.app.Activity;
import android.graphics.Bitmap;
import android.hardware.Camera;
import android.media.CamcorderProfile;
import android.media.MediaMetadataRetriever;
import android.media.MediaRecorder;
import android.util.Log;
import android.view.GestureDetector;
import android.view.MotionEvent;
import android.view.SurfaceHolder;
import android.view.SurfaceView;
import android.view.View;
import com.werb.mediautilsdemo.widget.AutoFitTextureView;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.List;
/**
* Created by wanbo on 2017/1/18.
*/
public class MediaUtils implements SurfaceHolder.Callback {
private static final String TAG = "MediaUtils";
public static final int MEDIA_AUDIO = 0;
public static final int MEDIA_VIDEO = 1;
private Activity activity;
private MediaRecorder mMediaRecorder;
private CamcorderProfile profile;
private Camera mCamera;
private AutoFitTextureView textureView;
private SurfaceView mSurfaceView;
private SurfaceHolder mSurfaceHolder;
private File targetDir;
private String targetName;
private File targetFile;
private int previewWidth, previewHeight;
private int recorderType;
private boolean isRecording;
private GestureDetector mDetector;
private boolean isZoomIn = false;
private int or = 90;
private int cameraPosition = 1;//0代表前置摄像头,1代表后置摄像头
public MediaUtils(Activity activity) {
this.activity = activity;
}
public void setRecorderType(int type) {
this.recorderType = type;
}
public void setTargetDir(File file) {
this.targetDir = file;
}
public void setTargetName(String name) {
this.targetName = name;
}
public String getTargetFilePath() {
return targetFile.getPath();
}
public boolean deleteTargetFile() {
if (targetFile.exists()) {
return targetFile.delete();
} else {
return false;
}
}
public void setSurfaceView(SurfaceView view) {
this.mSurfaceView = view;
mSurfaceHolder = mSurfaceView.getHolder();
mSurfaceHolder.setFixedSize(previewWidth, previewHeight);
mSurfaceHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
mSurfaceHolder.addCallback(this);
mDetector = new GestureDetector(activity, new ZoomGestureListener());
mSurfaceView.setOnTouchListener(new View.OnTouchListener() {
@Override
public boolean onTouch(View v, MotionEvent event) {
mDetector.onTouchEvent(event);
return true;
}
});
}
// public void setTextureView(AutoFitTextureView view) {
// this.textureView = view;
// initCamera();
// mDetector = new GestureDetector(activity, new ZoomGestureListener());
// this.textureView.setOnTouchListener(new View.OnTouchListener() {
// @Override
// public boolean onTouch(View v, MotionEvent event) {
// mDetector.onTouchEvent(event);
// return true;
// }
// });
// }
public int getPreviewWidth() {
return previewWidth;
}
public int getPreviewHeight() {
return previewHeight;
}
public boolean isRecording() {
return isRecording;
}
public void record() {
if (isRecording) {
try {
mMediaRecorder.stop(); // stop the recording
} catch (RuntimeException e) {
// RuntimeException is thrown when stop() is called immediately after start().
// In this case the output file is not properly constructed ans should be deleted.
Log.d(TAG, "RuntimeException: stop() is called immediately after start()");
//noinspection ResultOfMethodCallIgnored
targetFile.delete();
}
releaseMediaRecorder(); // release the MediaRecorder object
mCamera.lock(); // take camera access back from MediaRecorder
isRecording = false;
} else {
startRecordThread();
}
}
private boolean prepareRecord() {
try {
mMediaRecorder = new MediaRecorder();
if (recorderType == MEDIA_VIDEO) {
mCamera.unlock();
mMediaRecorder.setCamera(mCamera);
mMediaRecorder.setAudioSource(MediaRecorder.AudioSource.DEFAULT);
mMediaRecorder.setVideoSource(MediaRecorder.VideoSource.CAMERA);
mMediaRecorder.setProfile(profile);
// 实际视屏录制后的方向
if(cameraPosition == 0){
mMediaRecorder.setOrientationHint(270);
}else {
mMediaRecorder.setOrientationHint(or);
}
} else if (recorderType == MEDIA_AUDIO) {
mMediaRecorder.setAudioSource(MediaRecorder.AudioSource.MIC);
mMediaRecorder.setOutputFormat(MediaRecorder.OutputFormat.MPEG_4);
mMediaRecorder.setAudioEncoder(MediaRecorder.AudioEncoder.AAC);
}
targetFile = new File(targetDir, targetName);
mMediaRecorder.setOutputFile(targetFile.getPath());
} catch (Exception e) {
e.printStackTrace();
Log.d("MediaRecorder", "Exception prepareRecord: ");
releaseMediaRecorder();
return false;
}
try {
mMediaRecorder.prepare();
} catch (IllegalStateException e) {
Log.d("MediaRecorder", "IllegalStateException preparing MediaRecorder: " + e.getMessage());
releaseMediaRecorder();
return false;
} catch (IOException e) {
Log.d("MediaRecorder", "IOException preparing MediaRecorder: " + e.getMessage());
releaseMediaRecorder();
return false;
}
return true;
}
public void stopRecordSave() {
Log.d("Recorder", "stopRecordSave");
if (isRecording) {
isRecording = false;
try {
mMediaRecorder.stop();
Log.d("Recorder", targetFile.getPath());
} catch (RuntimeException r) {
Log.d("Recorder", "RuntimeException: stop() is called immediately after start()");
} finally {
releaseMediaRecorder();
}
}
}
public void stopRecordUnSave() {
Log.d("Recorder", "stopRecordUnSave");
if (isRecording) {
isRecording = false;
try {
mMediaRecorder.stop();
} catch (RuntimeException r) {
Log.d("Recorder", "RuntimeException: stop() is called immediately after start()");
if (targetFile.exists()) {
//不保存直接删掉
targetFile.delete();
}
} finally {
releaseMediaRecorder();
}
if (targetFile.exists()) {
//不保存直接删掉
targetFile.delete();
}
}
}
private void startPreView(SurfaceHolder holder) {
if (mCamera == null) {
mCamera = Camera.open(Camera.CameraInfo.CAMERA_FACING_BACK);
}
if (mCamera != null) {
mCamera.setDisplayOrientation(or);
try {
mCamera.setPreviewDisplay(holder);
Camera.Parameters parameters = mCamera.getParameters();
List<Camera.Size> mSupportedPreviewSizes = parameters.getSupportedPreviewSizes();
List<Camera.Size> mSupportedVideoSizes = parameters.getSupportedVideoSizes();
Camera.Size optimalSize = CameraHelper.getOptimalVideoSize(mSupportedVideoSizes,
mSupportedPreviewSizes, mSurfaceView.getWidth(), mSurfaceView.getHeight());
// Use the same size for recording profile.
previewWidth = optimalSize.width;
previewHeight = optimalSize.height;
parameters.setPreviewSize(previewWidth, previewHeight);
profile = CamcorderProfile.get(CamcorderProfile.QUALITY_HIGH);
// 这里是重点,分辨率和比特率
// 分辨率越大视频大小越大,比特率越大视频越清晰
// 清晰度由比特率决定,视频尺寸和像素量由分辨率决定
// 比特率越高越清晰(前提是分辨率保持不变),分辨率越大视频尺寸越大。
profile.videoFrameWidth = optimalSize.width;
profile.videoFrameHeight = optimalSize.height;
// 这样设置 1080p的视频 大小在5M , 可根据自己需求调节
profile.videoBitRate = 2 * optimalSize.width * optimalSize.height;
List<String> focusModes = parameters.getSupportedFocusModes();
if (focusModes != null) {
for (String mode : focusModes) {
mode.contains("continuous-video");
parameters.setFocusMode("continuous-video");
}
}
mCamera.setParameters(parameters);
mCamera.startPreview();
} catch (IOException e) {
e.printStackTrace();
}
}
}
private void releaseMediaRecorder() {
if (mMediaRecorder != null) {
// clear recorder configuration
mMediaRecorder.reset();
// release the recorder object
mMediaRecorder.release();
mMediaRecorder = null;
// Lock camera for later use i.e taking it back from MediaRecorder.
// MediaRecorder doesn't need it anymore and we will release it if the activity pauses.
Log.d("Recorder", "release Recorder");
}
}
private void releaseCamera() {
if (mCamera != null) {
// release the camera for other applications
mCamera.release();
mCamera = null;
Log.d("Recorder", "release Camera");
}
}
@Override
public void surfaceCreated(SurfaceHolder holder) {
mSurfaceHolder = holder;
startPreView(holder);
}
@Override
public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) {
}
@Override
public void surfaceDestroyed(SurfaceHolder holder) {
if (mCamera != null) {
Log.d(TAG, "surfaceDestroyed: ");
releaseCamera();
}
if (mMediaRecorder != null) {
releaseMediaRecorder();
}
}
private void startRecordThread() {
if (prepareRecord()) {
try {
mMediaRecorder.start();
isRecording = true;
Log.d("Recorder", "Start Record");
} catch (RuntimeException r) {
releaseMediaRecorder();
Log.d("Recorder", "RuntimeException: start() is called immediately after stop()");
}
}
}
private class ZoomGestureListener extends GestureDetector.SimpleOnGestureListener {
//双击手势事件
@Override
public boolean onDoubleTap(MotionEvent e) {
super.onDoubleTap(e);
Log.d(TAG, "onDoubleTap: 双击事件");
if (!isZoomIn) {
setZoom(20);
isZoomIn = true;
} else {
setZoom(0);
isZoomIn = false;
}
return true;
}
}
private void setZoom(int zoomValue) {
if (mCamera != null) {
Camera.Parameters parameters = mCamera.getParameters();
if (parameters.isZoomSupported()) {
int maxZoom = parameters.getMaxZoom();
if (maxZoom == 0) {
return;
}
if (zoomValue > maxZoom) {
zoomValue = maxZoom;
}
parameters.setZoom(zoomValue);
mCamera.setParameters(parameters);
}
}
}
private String getVideoThumb(String path) {
MediaMetadataRetriever media = new MediaMetadataRetriever();
media.setDataSource(path);
return bitmap2File(media.getFrameAtTime());
}
private String bitmap2File(Bitmap bitmap) {
File thumbFile = new File(targetDir,
targetName);
if (thumbFile.exists()) thumbFile.delete();
FileOutputStream fOut;
try {
fOut = new FileOutputStream(thumbFile);
bitmap.compress(Bitmap.CompressFormat.JPEG, 100, fOut);
fOut.flush();
fOut.close();
} catch (IOException e) {
return null;
}
return thumbFile.getAbsolutePath();
}
public void switchCamera() {
int cameraCount = 0;
Camera.CameraInfo cameraInfo = new Camera.CameraInfo();
cameraCount = Camera.getNumberOfCameras();//得到摄像头的个数
for (int i = 0; i < cameraCount; i++) {
Camera.getCameraInfo(i, cameraInfo);//得到每一个摄像头的信息
if (cameraPosition == 1) {
//现在是后置,变更为前置
if (cameraInfo.facing == Camera.CameraInfo.CAMERA_FACING_FRONT) {//代表摄像头的方位,CAMERA_FACING_FRONT前置 CAMERA_FACING_BACK后置
mCamera.stopPreview();//停掉原来摄像头的预览
mCamera.release();//释放资源
mCamera = null;//取消原来摄像头
mCamera = Camera.open(i);//打开当前选中的摄像头
startPreView(mSurfaceHolder);
cameraPosition = 0;
break;
}
} else {
//现在是前置, 变更为后置
if (cameraInfo.facing == Camera.CameraInfo.CAMERA_FACING_BACK) {//代表摄像头的方位,CAMERA_FACING_FRONT前置 CAMERA_FACING_BACK后置
mCamera.stopPreview();//停掉原来摄像头的预览
mCamera.release();//释放资源
mCamera = null;//取消原来摄像头
mCamera = Camera.open(i);//打开当前选中的摄像头
startPreView(mSurfaceHolder);
cameraPosition = 1;
break;
}
}
}
}
}