实例介绍
【实例简介】
【实例截图】
【核心代码】
package teaonly.projects.droidipcam; import android.content.Context; import android.hardware.Camera; import android.media.AudioManager; import android.media.CamcorderProfile; import android.media.MediaRecorder; import android.util.AttributeSet; import android.util.Log; import android.view.MotionEvent; import android.view.SurfaceHolder; import android.view.SurfaceView; import android.view.View; import java.io.IOException; import java.io.File; import java.io.FileOutputStream; import java.io.FileDescriptor; import java.lang.System; import java.lang.Thread; import java.nio.ByteBuffer; import java.nio.IntBuffer; public class CameraView extends View implements SurfaceHolder.Callback, View.OnTouchListener{ private AudioManager mAudioManager = null; private Camera myCamera = null; private MediaRecorder myMediaRecorder = null; private SurfaceHolder myCamSHolder; private SurfaceView myCameraSView; public CameraView(Context c, AttributeSet attr){ super(c, attr); mAudioManager = (AudioManager)c.getSystemService(Context.AUDIO_SERVICE); mAudioManager.setStreamMute(AudioManager.STREAM_SYSTEM, true); } public void SetupCamera(SurfaceView sv){ myCameraSView = sv; myCamSHolder = myCameraSView.getHolder(); myCamSHolder.addCallback(this); myCamSHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS); myCamera = Camera.open(); /* Camera.Parameters p = myCamera.getParameters(); myCamera.setParameters(p); */ setOnTouchListener(this); } public void PrepareMedia(int wid, int hei) { myMediaRecorder = new MediaRecorder(); myCamera.stopPreview(); myCamera.unlock(); myMediaRecorder.setCamera(myCamera); myMediaRecorder.setAudioSource(MediaRecorder.AudioSource.CAMCORDER); myMediaRecorder.setVideoSource(MediaRecorder.VideoSource.CAMERA); CamcorderProfile targetProfile = CamcorderProfile.get(CamcorderProfile.QUALITY_LOW); targetProfile.videoFrameWidth = wid; targetProfile.videoFrameHeight = hei; targetProfile.videoFrameRate = 25; targetProfile.videoBitRate = 512*1024; targetProfile.videoCodec = MediaRecorder.VideoEncoder.H264; targetProfile.audioCodec = MediaRecorder.AudioEncoder.AMR_NB; targetProfile.fileFormat = MediaRecorder.OutputFormat.MPEG_4; myMediaRecorder.setProfile(targetProfile); } private boolean realyStart() { myMediaRecorder.setPreviewDisplay(myCamSHolder.getSurface()); try { myMediaRecorder.prepare(); } catch (IllegalStateException e) { releaseMediaRecorder(); Log.d("TEAONLY", "JAVA: camera prepare illegal error"); return false; } catch (IOException e) { releaseMediaRecorder(); Log.d("TEAONLY", "JAVA: camera prepare io error"); return false; } try { myMediaRecorder.start(); } catch( Exception e) { releaseMediaRecorder(); Log.d("TEAONLY", "JAVA: camera start error"); return false; } return true; } public boolean StartStreaming(FileDescriptor targetFd) { myMediaRecorder.setOutputFile(targetFd); myMediaRecorder.setMaxDuration(9600000); // Set max duration 4 hours //myMediaRecorder.setMaxFileSize(1600000000); // Set max file size 16G myMediaRecorder.setOnInfoListener(streamingEventHandler); return realyStart(); } public boolean StartRecording(String targetFile) { myMediaRecorder.setOutputFile(targetFile); return realyStart(); } public void StopMedia() { myMediaRecorder.stop(); releaseMediaRecorder(); } private void releaseMediaRecorder(){ if (myMediaRecorder != null) { myMediaRecorder.reset(); // clear recorder configuration myMediaRecorder.release(); // release the recorder object myMediaRecorder = null; myCamera.lock(); // lock camera for later use myCamera.startPreview(); } myMediaRecorder = null; } private MediaRecorder.OnInfoListener streamingEventHandler = new MediaRecorder.OnInfoListener() { public void onInfo(MediaRecorder mr, int what, int extra) { Log.d("TEAONLY", "MediaRecorder event = " what); } }; public void surfaceChanged(SurfaceHolder sh, int format, int w, int h){ if ( myCamera != null && myMediaRecorder == null) { myCamera.stopPreview(); try { myCamera.setPreviewDisplay(sh); } catch ( Exception ex) { ex.printStackTrace(); } myCamera.startPreview(); } } public void surfaceCreated(SurfaceHolder sh){ } public void surfaceDestroyed(SurfaceHolder sh){ } public boolean onTouch(View v, MotionEvent evt) { return true; } }
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