Android 视频录制工具类VideoRecordUtil

一录制视频工具类

import android.content.Context;
import android.graphics.Bitmap;
import android.hardware.Camera;
import android.media.CamcorderProfile;
import android.media.MediaMetadataRetriever;
import android.media.MediaRecorder;
import android.os.Environment;
import android.os.StatFs;
import android.util.Log;
import android.view.SurfaceHolder;
import android.view.SurfaceView;
import android.widget.Toast;import java.io.File;
import java.io.IOException;
import java.text.DecimalFormat;
import java.util.HashMap;
import java.util.Timer;
import java.util.TimerTask;import mwteck.ettda.Utils.AppToast;/*** CreateTime 2017/10/16 15:00* Author LiuShiHua* Description：录制视频* <p>* 1.在Activity的oncreate方法中初始化* 2.在onstart中调用RecordVideoUtil的startPreview方法生成预览界面* 3.在onstop中调用RecordVideoUtil的stopRecord和stotPreview方法终止录制、预览界面* <p>* duration 默认录制时间*/public class RecordVideoUtil {/*** 默认录制时间是30秒*/private int duration = 30;private SurfaceHolder mSurfaceHolder;private Context context;private boolean mIsSufaceCreated = false;private Camera mCamera;private final static int CAMERA_ID = 0;private boolean isRecording = false;private final String TAG = "------------>录像";private MediaRecorder mRecorder;private long start, end;private String savePath;private static int cameraPosition = 1;//0代表前置摄像头，1代表后置摄像头private boolean isView = true;private boolean highQuality = false;//是否录制高质量音频public RecordVideoUtil(Context context, SurfaceView mCameraPreview) {this.context = context;mSurfaceHolder = mCameraPreview.getHolder();mSurfaceHolder.addCallback(mSurfaceCallback);mSurfaceHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);}private SurfaceHolder.Callback mSurfaceCallback = new SurfaceHolder.Callback() {@Overridepublic void surfaceDestroyed(SurfaceHolder holder) {mIsSufaceCreated = false;}@Overridepublic void surfaceCreated(SurfaceHolder holder) {mIsSufaceCreated = true;}@Overridepublic void surfaceChanged(SurfaceHolder holder, int format, int width, int height) {startPreview();}};//启动预览public boolean startPreview() {//保证只有一个Camera对象if (mCamera != null || !mIsSufaceCreated) {Log.d(TAG, "startPreview will return");return true;}try {mCamera = Camera.open(CAMERA_ID);} catch (Exception e) {//未授权相机权限，这里会抛出异常AppToast.makeToast("打开相机失败");e.printStackTrace();return false;}Camera.Parameters parameters = mCamera.getParameters();
//        Camera.Size size = getBestPreviewSize(, CameraUtils.PREVIEW_HEIGHT, parameters);
//        if (size != null) {//            parameters.setPreviewSize(size.width, size.height);
//        }parameters.setFocusMode(Camera.Parameters.FOCUS_MODE_CONTINUOUS_VIDEO);parameters.setPreviewFrameRate(20);//设置相机预览方向mCamera.setDisplayOrientation(90);mCamera.setParameters(parameters);try {mCamera.setPreviewDisplay(mSurfaceHolder);} catch (Exception e) {Log.d(TAG, e.getMessage());}mCamera.startPreview();return true;}//打开闪光灯public boolean openLight() {if (cameraPosition == 0) {return false;}return RecordVideoHelper.openFlashlight(mCamera, context);}//关闭闪光灯public boolean closeLight() {return RecordVideoHelper.closeFlashlight(mCamera);}/*** 外部调用** @param savePath 存储路径* @return 开始是否成功*/public boolean startRecord(String savePath) {this.savePath = savePath;if (isRecording) {return false;}if (!hasSdcard()) {Toast.makeText(context, "请先插入SD卡(存储卡)", Toast.LENGTH_SHORT).show();return false;}if (!isSDCanUseSize50M()) {Toast.makeText(context, "内存已经不足50M了，请先清理手机空间", Toast.LENGTH_SHORT).show();}File file = new File(savePath);if (!file.exists()) {file.getParentFile().mkdirs();try {file.createNewFile();} catch (IOException e) {e.printStackTrace();Toast.makeText(context, "文件创建失败", Toast.LENGTH_SHORT).show();return false;}}if (mRecorder != null) {mRecorder.stop();mRecorder.release();mRecorder = null;}mRecorder = new MediaRecorder();//实例化mRecorder.setPreviewDisplay(mSurfaceHolder.getSurface());//预览mCamera.unlock();setMeadiaRecorder(mRecorder, file.getPath());try {mRecorder.prepare();mRecorder.start();isRecording = true;start = System.currentTimeMillis();} catch (Exception e) {e.printStackTrace();if (mCamera != null) {mCamera.lock();}isRecording = false;mRecorder.release();return false;}return true;}/*** 停止录制** @return*/public boolean stopRecord() {end = System.currentTimeMillis();Log.d("---------->", "停止录制");if (!isRecording || mRecorder == null) {return false;}try {mRecorder.stop();} catch (Exception e) {mRecorder = null;mRecorder = new MediaRecorder();}mRecorder.release();mRecorder = null;if (mCamera != null) {mCamera.lock();}isRecording = false;//重启预览if (!startPreview())return false;if (((double) (end - start) / 1000) < 1) {if (savePath != null && new File(savePath).exists()) {new File(savePath).delete();}}return true;}/*** 在activity中的onPause中调用* <p>* 释放Camera对象*/public void stopPreview() {if (mCamera != null) {try {mCamera.setPreviewDisplay(null);} catch (Exception e) {Log.d(TAG, e.getMessage());}mCamera.stopPreview();mCamera.release();mCamera = null;isView = false;}}/*** 设置参数* ** @param mRecorder* @param filePath  1，花屏主要跟VideoSize有关，将Size调到640*480以上花屏问题可解决,或者录制屏幕为正方形。*                  2，清晰度和录制文件大小主要和EncodingBitRate有关，参数越大越清晰，同时录制的文件也越大。*                  3，视频文件的流畅度主要跟VideoFrameRate有关，参数越大视频画面越流畅，但实际中跟你的摄像头质量有很大关系。*/private void setMeadiaRecorder(MediaRecorder mRecorder, String filePath) {mRecorder.setOnErrorListener(new MediaRecorder.OnErrorListener() {@Overridepublic void onError(MediaRecorder mediaRecorder, int i, int i1) {Log.d("-------->", "MediaRecorder.onError");}});mRecorder.setCamera(mCamera); //给Recorder设置Camera对象，保证录像跟预览的方向保持一致if (cameraPosition == 1) {mRecorder.setOrientationHint(90);  //改变保存后的视频文件播放时是否横屏(不加这句，视频文件播放的时候角度是反的)} else {mRecorder.setOrientationHint(270);  //改变保存后的视频文件播放时是否横屏(不加这句，视频文件播放的时候角度是反的)}mRecorder.setVideoSource(MediaRecorder.VideoSource.CAMERA); // 设置从摄像头采集图像mRecorder.setAudioSource(MediaRecorder.AudioSource.DEFAULT); // 设置从麦克风采集声音CamcorderProfile mProfile = CamcorderProfile.get(CamcorderProfile.QUALITY_HIGH);mRecorder.setOutputFormat(MediaRecorder.OutputFormat.MPEG_4);// 设置视频的输出格式 为MP4
//        mRecorder.setOutputFormat(mProfile.fileFormat);mRecorder.setAudioEncoder(mProfile.audioCodec);// 设置音频的编码格式
//        mRecorder.setVideoEncoder(mProfile.videoCodec);mRecorder.setVideoEncoder(MediaRecorder.VideoEncoder.H264);// 设置视频的编码格式mRecorder.setOutputFile(filePath);
//        mRecorder.setVideoSize(mProfile.videoFrameWidth, mProfile.videoFrameHeight);mRecorder.setVideoSize(640, 480);//设置录制的视频帧率,必须放在设置编码和格式的后面，否则报错mRecorder.setVideoFrameRate(mProfile.videoFrameRate);mRecorder.setVideoEncodingBitRate(800 * 1024);//视频码率mRecorder.setAudioEncodingBitRate(mProfile.audioBitRate);
//        mRecorder.setAudioChannels(mProfile.audioChannels);mRecorder.setAudioChannels(1);//设置录制的音频通道数
//        mRecorder.setAudioSamplingRate(mProfile.audioSampleRate);mRecorder.setAudioSamplingRate(44100);
//        mRecorder.setMaxDuration(duration * 1000); //设置最大录像时间为10s}/*** 检查设备是否存在SDCard的工具方法*/public static boolean hasSdcard() {String state = Environment.getExternalStorageState();if (state.equals(Environment.MEDIA_MOUNTED)) {// 有存储的SDCardreturn true;} else {return false;}}/*** 获得sd卡剩余容量是否有50M，即可用大小** @return*/public static boolean isSDCanUseSize50M() {if (!hasSdcard()) {return false;}File path = Environment.getExternalStorageDirectory();StatFs sf = new StatFs(path.getPath());long size = sf.getBlockSize();//SD卡的单位大小long available = sf.getAvailableBlocks();//可使用的数量DecimalFormat df = new DecimalFormat();df.setGroupingSize(3);//每3位分为一组if (size * available / 1024 / 1024 < 50) {return false;}return true;}/*** 切换前置/后置摄像头*/public void changeUseCamera() {if (mCamera == null || mSurfaceHolder == null) return;//切换前后摄像头if (!isCanChange) return;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stopPreview();mCamera = Camera.open(i);//打开当前选中的摄像头try {mCamera.setPreviewDisplay(mSurfaceHolder);//通过surfaceview显示取景画面} catch (IOException e) {e.printStackTrace();}if (mCamera != null && !isView) {try {mCamera.startPreview();//开始预览mCamera.setDisplayOrientation(90);Camera.Parameters parameters = mCamera.getParameters();parameters.setPreviewFrameRate(5);//设置旋转代码parameters.setRotation(90);cameraPosition = 0;changeCameraTimer();} catch (Exception e) {e.printStackTrace();}}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stopPreview();mCamera = Camera.open(i);//打开当前选中的摄像头try {mCamera.setPreviewDisplay(mSurfaceHolder);//通过surfaceview显示取景画面} catch (IOException e) {e.printStackTrace();}if (mCamera != null && !isView) {try {mCamera.startPreview();//开始预览mCamera.setDisplayOrientation(90);Camera.Parameters parameters = mCamera.getParameters();parameters.setPreviewFrameRate(5);//设置旋转代码parameters.setRotation(90);mCamera.setParameters(parameters);cameraPosition = 1;changeCameraTimer();} catch (Exception e) {e.printStackTrace();}}break;}}}}private boolean isCanChange = true;private void changeCameraTimer() {isCanChange = false;new Timer().schedule(new TimerTask() {@Overridepublic void run() {isCanChange = true;}}, 600);}/*** 获取本地视频的第一帧** @param filePath* @return*/public static Bitmap getVideoFirstFrame(String filePath) {MediaMetadataRetriever mmr = new MediaMetadataRetriever();//实例化MediaMetadataRetriever对象File file = new File(filePath);//实例化File对象，文件路径为/storage/sdcard/Movies/music1.mp4if (file.exists()) {mmr.setDataSource(file.getAbsolutePath());//设置数据源为该文件对象指定的绝对路径Bitmap bitmap = mmr.getFrameAtTime();//获得视频第一帧的Bitmap对象return bitmap;}return null;}/*** 获取网络视频的第一帧** @param videoUrl* @return*/public static Bitmap getVideoFirstFrame_Net(String videoUrl) {Bitmap bitmap = null;MediaMetadataRetriever retriever = new MediaMetadataRetriever();try {//根据url获取缩略图retriever.setDataSource(videoUrl, new HashMap());//获得第一帧图片bitmap = retriever.getFrameAtTime();} catch (Exception e) {e.printStackTrace();} finally {retriever.release();}return bitmap;}//    需要将以下方法放在调用此工具类的Activity/fragment中——解决暂停后无法录制的问题
//    @Override
//    protected void onStart() {//        super.onStart();
//        if (videoUtil == null) return;
//        videoUtil.startPreview();
//    }
//
//    @Override
//    protected void onPause() {//        super.onPause();
//        if (videoUtil == null) return;
//        if (isRecordVideo) {//            videoUtil.stopRecord();
//        }
//        videoUtil.stopPreview();
//        isRecordVideo  = false;
//    }
}

二帮助类

import android.content.Context;
import android.content.pm.PackageManager;
import android.hardware.Camera;
import android.util.Log;import java.util.Collection;/*** CreateTime 2017/12/4 13:59* Author LiuShiHua* Description：打开和关闭闪光灯*///        <uses-permission android:name="android.permission.FLASHLIGHT" />
//        <uses-permission android:name="android.permission.CAMERA"/>
//        <uses-feature android:name="android.hardware.camera" />
//        <uses-feature android:name="android.hardware.autofocus"/>public class RecordVideoHelper {private static boolean isCanUse = false;private static boolean isOpenFrontCamera = false;//打开闪光灯public static boolean openFlashlight(Camera camera, Context context) {if (isCanUseLight(context, camera)) {isCanUse = true;doSetTorch(camera, true);return true;} else {Log.d("------------->", "手机不支持打开闪光灯");return false;}}//关闭闪光灯public static boolean closeFlashlight(Camera camera) {if (isCanUse) {doSetTorch(camera, false);}return isCanUse;}//是否可以使用闪光灯private static boolean isCanUseLight(Context context, Camera camera) {return camera != null && context.getPackageManager().hasSystemFeature(PackageManager.FEATURE_CAMERA_FLASH);}private static void doSetTorch(Camera camera, boolean newSetting) {Camera.Parameters parameters = camera.getParameters();String flashMode;/** 是否支持闪光灯 */if (newSetting) {flashMode = findSettableValue(parameters.getSupportedFlashModes(), Camera.Parameters.FLASH_MODE_TORCH, Camera.Parameters.FLASH_MODE_ON);} else {flashMode = findSettableValue(parameters.getSupportedFlashModes(), Camera.Parameters.FLASH_MODE_OFF);}if (flashMode != null) {parameters.setFlashMode(flashMode);}camera.setParameters(parameters);}private static String findSettableValue(Collection<String> supportedValues, String... desiredValues) {String result = null;if (supportedValues != null) {for (String desiredValue : desiredValues) {if (supportedValues.contains(desiredValue)) {result = desiredValue;break;}}}return result;}
}

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