SurfaceView를 이용한 비디오 재생 과 녹화




출처: http://ilililililililililili.blogspot.kr/2013/07/android-database.html

import android.app.Activity;

import android.content.ContentValues;

import android.content.Intent;

import android.hardware.Camera;

import android.media.MediaPlayer;

import android.media.MediaRecorder;

import android.media.MediaPlayer.OnCompletionListener;

import android.media.MediaPlayer.OnPreparedListener;

import android.net.Uri;

import android.os.Bundle;

import android.os.Environment;

import android.provider.MediaStore;

import android.util.Log;

import android.view.Menu;

import android.view.SurfaceHolder;

import android.view.SurfaceView;

import android.view.View;

import android.widget.Button;

import android.widget.MediaController;

import android.widget.Toast;

import android.widget.VideoView;

 

public class MainActivity extends Activity {

 

 private static String EXTERNAL_STORAGE_PATH = "";

    private static String RECORDED_FILE = "video_recorded";

    private static int fileIndex = 0;

    private static String filename = "";

 

    MediaPlayer player;

    MediaRecorder recorder;

 

    // 카메라 상태를 저장하고 있는 객체

    private Camera camera = null;

     

    SurfaceView surfaceView;

    SurfaceHolder holder;

     

    @Override

    public void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_main);

   

        // 외장메모리가 있는지 확인한다.

        // Environment.getExternalStorageState() 를 통해서 현재 외장메모리를 상태를 알수있다.

        String state = Environment.getExternalStorageState();

        // Environment.MEDIA_MOUNTED 외장메모리가 마운트 flog

        if (!state.equals(Environment.MEDIA_MOUNTED)) {

         Toast.makeText(getApplicationContext(), "외장 메모리가 마운트 되지않았습니다.", Toast.LENGTH_LONG).show();

        } else {

         EXTERNAL_STORAGE_PATH = Environment.getExternalStorageDirectory().getAbsolutePath();

        }

 

         

        // SurfaceView 클래스 객체를 이용해서 카메라에 받은 녹화하고 재생하는데 쓰일것이다.

        surfaceView = (SurfaceView)findViewById(R.id.surface);

        // SurfaceView 클래스를 컨트롤하기위한 SurfaceHolder 생성

        holder = surfaceView.getHolder();

        // 버퍼없음

        holder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);

 

        Button recordBtn = (Button) findViewById(R.id.recordBtn);

        Button recordStopBtn = (Button) findViewById(R.id.recordStopBtn);

        Button playBtn = (Button) findViewById(R.id.playBtn);

        Button playStopBtn = (Button) findViewById(R.id.playStopBtn);

 

        // 녹화 시작 버튼

        recordBtn.setOnClickListener(new View.OnClickListener() {

            public void onClick(View v) {

                try {

                 // 녹화 시작을 위해  MediaRecorder 객체 recorder를 생성한다.

                 if (recorder == null) {

                  recorder = new MediaRecorder();

                    }

                 // 오디오와영상 입력 형식 설정

                 recorder.setAudioSource(MediaRecorder.AudioSource.MIC);

                 recorder.setVideoSource(MediaRecorder.VideoSource.CAMERA);

                 recorder.setOutputFormat(MediaRecorder.OutputFormat.MPEG_4);

                  

                 // 오디오와영상 인코더 설정

                 recorder.setAudioEncoder(MediaRecorder.AudioEncoder.DEFAULT);

                 recorder.setVideoEncoder(MediaRecorder.VideoEncoder.DEFAULT);

 

                 // 저장될 파일 지정

                 filename = createFilename();

                 recorder.setOutputFile(filename);

 

                 // 녹화도중에 녹화화면을 뷰에다가 출력하게 해주는 설정

                 recorder.setPreviewDisplay(holder.getSurface());

                  

                 // 녹화 준비,시작

                 recorder.prepare();

                 recorder.start();

 

                } catch (Exception ex) {

                    ex.printStackTrace();

                    recorder.release();

                    recorder = null;

                }

            }

        });

 

        recordStopBtn.setOnClickListener(new View.OnClickListener() {

            public void onClick(View v) {

                if (recorder == null)

                    return;

                // 녹화 중지

                recorder.stop();

                 

                // 영상 재생에 필요한 메모리를 해제한다.

                recorder.release();

                recorder = null;

 

                ContentValues values = new ContentValues(10);

 

                values.put(MediaStore.MediaColumns.TITLE, "RecordedVideo");

                values.put(MediaStore.Audio.Media.ALBUM, "Video Album");

                values.put(MediaStore.Audio.Media.ARTIST, "Mike");

                values.put(MediaStore.Audio.Media.DISPLAY_NAME, "Recorded Video");

                values.put(MediaStore.MediaColumns.DATE_ADDED, System.currentTimeMillis() / 1000);

                values.put(MediaStore.MediaColumns.MIME_TYPE, "video/mp4");

                values.put(MediaStore.Audio.Media.DATA, filename);

 

                Uri videoUri = getContentResolver().insert(MediaStore.Video.Media.EXTERNAL_CONTENT_URI, values);

                if (videoUri == null) {

                    Log.d("SampleVideoRecorder", "Video insert failed.");

                    return;

                }

 

                sendBroadcast(new Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE, videoUri));

 

            }

        });

 

        playBtn.setOnClickListener(new View.OnClickListener() {

            public void onClick(View v) {

              

             // 영상 재생 방법

                if (player == null) {

                 // 영상 플레이를 위해 MediaPlayer 클래스 객체를 생성한다

                    player = new MediaPlayer();

                }

 

                try {

                 // 플레이할 파일 설정

                    player.setDataSource(filename);

                     

                    // 플레이할 뷰 설정

                    player.setDisplay(holder);

                  

                    // 플레이 준비,시작

                    player.prepare();

                    player.start();         

                           

                } catch (Exception e) {

                    Toast.makeText(getApplicationContext(), "영상이 재생 도중 예외가 발생했습니다.", Toast.LENGTH_LONG).show();

                }

            }

        });

 

 

        playStopBtn.setOnClickListener(new View.OnClickListener() {

            public void onClick(View v) {

              

             // 영상 중지 방법

                if (player == null)

                 return;

                // 영상 중지

                player.stop();

                 

                // 메모리 해제

                player.release();

                player = null;

            }

        });

         

         

    }

 

 

    private String createFilename() {

     fileIndex++;

 

     String newFilename = "";

     if (EXTERNAL_STORAGE_PATH == null || EXTERNAL_STORAGE_PATH.equals("")) {

      // 내장 메모리를 사용합니다.

      newFilename = RECORDED_FILE + fileIndex + ".mp4";

     } else {

      // 외장 메모리를 사용합니다.

      newFilename = EXTERNAL_STORAGE_PATH + "/" + RECORDED_FILE + fileIndex + ".mp4";

     }

 

     return newFilename;

    }

 

 

    // 액티비티가 onPause 상태일때 녹화,재생에 필요한 모든 객체들의 메모리를 해제한다

    protected void onPause() {

        super.onPause();

     if (camera != null) {

      camera.release();

      camera = null;

        }

 

        if (recorder != null) {

         recorder.release();

         recorder = null;

        }

 

        if (player != null) {

            player.release();

            player = null;

        }

    }

 

 

    @Override

    public boolean onCreateOptionsMenu(Menu menu) {

        getMenuInflater().inflate(R.menu.activity_main, menu);

        return true;

    }

}