cooleshow_android/musicMerge/src/main/java/com/cooleshow/musicmerge/player/CustomPlayer.java

package com.cooleshow.musicmerge.player;

import android.content.Context;
import android.media.AudioManager;
import android.media.MediaPlayer;
import android.media.PlaybackParams;
import android.net.Uri;
import android.os.Handler;
import android.os.Looper;
import android.os.Message;
import android.util.Log;
import android.view.Surface;
import android.view.SurfaceHolder;

import com.cooleshow.base.utils.LOG;

import java.io.IOException;

import androidx.annotation.NonNull;

/**
 * Author by pq, Date on 2023/5/11.
 */
public class CustomPlayer implements MediaPlayer.OnErrorListener, MediaPlayer.OnCompletionListener, MediaPlayer.OnPreparedListener, MediaPlayer.OnVideoSizeChangedListener {
    public String TAG = "";
    public static final int RESUME_PLAY_MSG_WHAT = 10001;
    private Context mContext;
    MediaPlayer mPlayer;
    private boolean hasPrepared;
    private boolean isStoped = false;
    private AudioManager mAudioManager;
    private OnEventListener onEventListener;

    public CustomPlayer(String tag) {
        TAG = tag;
    }

    private Handler mHandler = new Handler(Looper.getMainLooper()) {
        @Override
        public void handleMessage(@NonNull Message msg) {
            int what = msg.what;
            if (what == RESUME_PLAY_MSG_WHAT) {
                expectPosition = 0;
                resume();
                return;
            }
        }
    };

    private Runnable progressRunnable = new Runnable() {
        @Override
        public void run() {
            if (mPlayer != null) {
                int currentPosition = mPlayer.getCurrentPosition();
                if (onEventListener != null) {
                    onEventListener.onProgress(currentPosition);
                }
                sendProgressMsg();
            }
        }
    };

    public CustomPlayer() {
        initPlayer();
    }

    private void initPlayer() {
        if (null == mPlayer) {
            mPlayer = new MediaPlayer();
            mPlayer.setOnErrorListener(this);
            mPlayer.setOnCompletionListener(this);
            mPlayer.setOnPreparedListener(this);
            mPlayer.setOnVideoSizeChangedListener(this);
        }
    }

    public MediaPlayer getPlayer() {
        return mPlayer;
    }

    public void setVolume(float volume) {
        if (mPlayer != null) {
            LOG.i("setVolume:" + volume + "hasPrepared:" + hasPrepared);
            mPlayer.setVolume(volume, volume);
        }
    }

    public void play(Context context, Uri dataSource) {
        hasPrepared = false; // 开始播放前讲Flag置为不可操作
        isStoped = false;
        initPlayer(); // 如果是第一次播放/player已经释放了，就会重新创建、初始化
        try {
            removeAllMsg();
            mPlayer.reset();
            mPlayer.setDataSource(context, dataSource); // 设置曲目资源
            mPlayer.prepareAsync(); // 异步的准备方法
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    public void play(String path) {
        hasPrepared = false; // 开始播放前讲Flag置为不可操作
        isStoped = false; //
        initPlayer(); // 如果是第一次播放/player已经释放了，就会重新创建、初始化
        try {
            removeAllMsg();
            mPlayer.reset();
            mPlayer.setDataSource(path); // 设置曲目资源
            mPlayer.prepareAsync(); // 异步的准备方法
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    public int getCu() {
        try {
            if (mPlayer != null) {
                int currentPosition = mPlayer.getCurrentPosition();
                return currentPosition;
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
        return 0;
    }


    public int getT() {
        if (mPlayer != null) {
            int duration = mPlayer.getDuration();
            return duration;
        }
        return -1;
    }

    public void start() {
        if (isStoped) {
            return;
        }
        // release()会释放player、将player置空，所以这里需要判断一下
        if (null != mPlayer && hasPrepared) {
            LOG.i(TAG, "start expectPosition:" + expectPosition);
            if (expectPosition < 0) {
                sendDelayPlayMsg(Math.abs(expectPosition));
                return;
            }
            mPlayer.start();
        }

//        // release()会释放player、将player置空，所以这里需要判断一下
//        if (null != mPlayer && hasPrepared) {
//            mPlayer.start();
//        }
    }

    public void setSpeed(float speed) {
        if (speed < 0.5 || speed > 2.0f) {
            return;
        }
        try {
            if (mPlayer != null) {
                if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.M) {
                    PlaybackParams playbackParams = mPlayer.getPlaybackParams();
                    LOG.i("pq", "setSpeed:" + speed);
                    playbackParams.setSpeed(speed);
                    mPlayer.setPlaybackParams(playbackParams);
                }
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    public void pause() {
        if (null != mPlayer && hasPrepared) {
            mPlayer.pause();
        }
    }

    public void resume() {
        if (null != mPlayer && hasPrepared) {
            LOG.i(TAG, "resume expectPosition:" + expectPosition);
            if (expectPosition < 0) {
                sendDelayPlayMsg(Math.abs(expectPosition));
                return;
            }
            mPlayer.start();
        }
    }

    private int expectPosition = 0;

    public int getExpectPosition() {
        return expectPosition;
    }

    public void setExpectPosition(int expectPosition) {
        this.expectPosition = expectPosition;
    }

    public void resetToPrepare() {
        if (expectPosition == 0) {
            seekTo(0);
        } else {
            seekTo(expectPosition);
        }
    }

    public void seekTo(int position) {
        this.expectPosition = position;
        LOG.i(TAG, "seekTo expectPosition:" + expectPosition);
        if (mPlayer == null) {
            return;
        }
        mHandler.removeMessages(RESUME_PLAY_MSG_WHAT);
        LOG.i(TAG, "seekTo getTotal:" + getTotal());
        if (position > getTotal()) {
            position = getTotal();
        }
        LOG.i(TAG, "isPlaying:" + isPlaying());
        if (position < 0) {
            mPlayer.seekTo(0);
            if (isPlaying()) {
                pause();
                sendDelayPlayMsg(Math.abs(position));
            }
            return;
        }
        LOG.i(TAG, "seekTo:" + position + "--hasPrepared:" + hasPrepared);
        if (null != mPlayer && hasPrepared) {
            mPlayer.seekTo(position);
        }
    }

    private void sendDelayPlayMsg(int delay) {
        LOG.i(TAG,"sendDelayPlayMsg:"+delay);
        Message obtain = Message.obtain();
        obtain.what = RESUME_PLAY_MSG_WHAT;
        mHandler.removeMessages(RESUME_PLAY_MSG_WHAT);
        mHandler.sendMessageDelayed(obtain, delay);
    }

    // 对于播放视频来说，通过设置SurfaceHolder来设置显示Surface。这个方法不需要判断状态、也不会改变player状态
    public void setDisplay(SurfaceHolder holder) {
        if (null != mPlayer) {
            mPlayer.setDisplay(holder);
        }
    }

    public boolean isPlaying() {
        if (null != mPlayer) {
            return mPlayer.isPlaying();
        }
        return false;
    }

    public void release() {
        removeAllMsg();
        hasPrepared = false;
        isStoped = true;
        if (mPlayer != null) {
            mPlayer.stop();
            mPlayer.release();
            mPlayer = null;
        }
    }

    public void stop() {
        if (mPlayer == null) {
            return;
        }
        removeAllMsg();
        isStoped = true;
        hasPrepared = false;
        Log.i(TAG, "player to stop:" + hasPrepared + "-thread:" + Thread.currentThread().getName());
        mPlayer.stop();
    }

    @Override
    public void onPrepared(MediaPlayer mp) {
        hasPrepared = true; // 准备完成后回调到这里
        sendProgressMsg();
        if (onEventListener != null) {
            onEventListener.onPrepared(getTotal());
        }
    }

    public int getTotal() {
        if (mPlayer != null) {
            return mPlayer.getDuration();
        }
        return 0;
    }

    private void sendProgressMsg() {
        mHandler.postDelayed(progressRunnable, 100);
    }

    private void removeAllMsg() {
        mHandler.removeCallbacksAndMessages(null);
    }

    @Override
    public void onCompletion(MediaPlayer mp) {
//        hasPrepared = false;
        if (onEventListener != null) {
            onEventListener.onCompleted();
        }
        // 通知调用处，调用play()方法进行下一个曲目的播放
    }

    @Override
    public boolean onError(MediaPlayer mp, int what, int extra) {
        hasPrepared = false;
        if (onEventListener != null) {
            onEventListener.onError();
        }
        return true;
    }

    public void setOnEventListener(OnEventListener onEventListener) {
        this.onEventListener = onEventListener;
    }

    @Override
    public void onVideoSizeChanged(MediaPlayer mp, int width, int height) {
        if (onEventListener != null) {
            onEventListener.onVideoSizeChanged(mp, width, height);
        }
    }

    public interface OnEventListener {
        void onProgress(int progress);

        void onPrepared(int duration);

        void onCompleted();

        void onError();

        void onVideoSizeChanged(MediaPlayer mp, int width, int height);
    }


    public void setSurface(SurfaceHolder sh) {
        if (mPlayer != null) {
            mPlayer.setDisplay(sh);
        }
    }

    public void setSurface(Surface sh) {
        if (mPlayer != null) {
            mPlayer.setSurface(sh);
        }
    }
}