Android 录制amr格式音频文件工具类

迷南。 2023-10-12 14:53 21阅读 0赞

import android.media.MediaPlayer;
    import android.media.MediaRecorder;
    import android.os.Handler;
    import android.util.Log;
    
    import com.sv.sipmag.webrtc.Constants;
    
    import java.io.File;
    import java.io.IOException;
    
    public class AmrAudioRecorder {
        private static final String TAG = "AmrAudioRecorder";
    
        private static final int DEFAULT_MAX_DURATION = 60; // 默认最长录制时长，单位为秒
    
        private static AmrAudioRecorder instance;
    
        private MediaRecorder mediaRecorder;
        private File outputFile;
        private int maxDuration;
        private OnRecordCompleteListener onRecordCompleteListener;
        private Handler handler;
    
        private MediaPlayer mediaPlayer;
    
        public interface OnRecordCompleteListener {
            void onRecordComplete(File outputFile);
        }
    
        private AmrAudioRecorder() {
            this.maxDuration = DEFAULT_MAX_DURATION;
            handler = new Handler();
        }
    
        public static AmrAudioRecorder getInstance() {
            if (instance == null) {
                synchronized (AmrAudioRecorder.class) {
                    if (instance == null) {
                        instance = new AmrAudioRecorder();
                    }
                }
            }
            return instance;
        }
    
        public void setMaxDuration(int maxDuration) {
            this.maxDuration = maxDuration;
        }
    
        public void setOnRecordCompleteListener(OnRecordCompleteListener onRecordCompleteListener) {
            this.onRecordCompleteListener = onRecordCompleteListener;
        }
    
        public void startRecording() {
            if (mediaRecorder != null) {
                stopRecording();
            }
            mediaRecorder = new MediaRecorder();
            mediaRecorder.setAudioSource(MediaRecorder.AudioSource.MIC);
            mediaRecorder.setOutputFormat(MediaRecorder.OutputFormat.AMR_NB);
            mediaRecorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);
            outputFile = new File(Constants.PATH_AUDIO_DIR + System.currentTimeMillis() + ".amr");
            mediaRecorder.setOutputFile(outputFile.getAbsolutePath());
            try {
                mediaRecorder.prepare();
                mediaRecorder.start();
                handler.postDelayed(new Runnable() {
                    @Override
                    public void run() {
                        stopRecording();
                    }
                }, maxDuration * 1000);
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    
        public void stopRecording() {
            if (mediaRecorder != null) {
                try {
                    mediaRecorder.stop();
                } catch (RuntimeException e) {
                    e.printStackTrace();
                }
                mediaRecorder.release();
                mediaRecorder = null;
                if (onRecordCompleteListener != null) {
                    onRecordCompleteListener.onRecordComplete(outputFile);
                }
            }
        }
    
        public void startPlaying(String audioFilePath) {
            if (mediaPlayer == null) {
                mediaPlayer = new MediaPlayer();
                mediaPlayer.setOnCompletionListener(mp -> {
                    stopPlaying();
                });
            }
    
            try {
                mediaPlayer.setDataSource(audioFilePath);
                mediaPlayer.prepare();
                mediaPlayer.start();
                Log.d(TAG, "Started playing audio");
            } catch (IOException e) {
                Log.e(TAG, "Error preparing audio player", e);
            }
        }
    
        public void stopPlaying() {
            if (mediaPlayer != null) {
                mediaPlayer.release();
                mediaPlayer = null;
                Log.d(TAG, "Stopped playing audio");
            }
        }
    
        public String getAudioFilePath() {
            return outputFile.getPath();
        }
    }