IjkVideoView

package com.dou361.ijkplayer.widget;

import android.annotation.TargetApi;
import android.app.AlertDialog;
import android.content.Context;
import android.content.DialogInterface;
import android.content.res.Resources;
import android.media.AudioManager;
import android.media.MediaPlayer;
import android.net.Uri;
import android.os.Build;
import android.support.annotation.NonNull;
import android.text.TextUtils;
import android.util.AttributeSet;
import android.util.Log;
import android.view.Gravity;
import android.view.KeyEvent;
import android.view.MotionEvent;
import android.view.View;
import android.widget.FrameLayout;
import android.widget.MediaController;

import java.io.File;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import java.util.Locale;
import java.util.Map;

import tv.danmaku.ijk.media.player.AndroidMediaPlayer;
import tv.danmaku.ijk.media.player.IMediaPlayer;
import tv.danmaku.ijk.media.player.IjkMediaPlayer;
import tv.danmaku.ijk.media.player.TextureMediaPlayer;
import tv.danmaku.ijk.media.player.misc.IMediaDataSource;

/**
 * ========================================
 * <p>
 * 版 权：dou361.com 版权所有 （C） 2015
 * <p>
 * 作 者：陈冠明
 * <p>
 * 个人网站：http://www.dou361.com
 * <p>
 * 版 本：1.0
 * <p>
 * 创建日期：2016/8/10 15:29
 * <p>
 * 描 述：视频渲染界面管理
 * <p>
 * <p>
 * 修订历史：
 * <p>
 * ========================================
 */
public class IjkVideoView extends FrameLayout implements MediaController.MediaPlayerControl {
    private String TAG = this.getClass().getSimpleName();
    /**
     * settable by the client  播放地址通过客户端可设置
     */
    private Uri mUri;
    /**
     * 播放器的一些基本配置
     */
    private Map<String, String> mHeaders;

    /**
     * mCurrentState is a VideoView object's current state.
     * mTargetState is the state that a method caller intends to reach.
     * For instance, regardless the VideoView object's current state,
     * calling pause() intends to bring the object to a target state
     * of STATE_PAUSED.
     */
    private int mCurrentState = PlayStateParams.STATE_IDLE;
    private int mTargetState = PlayStateParams.STATE_IDLE;

    /**
     * All the stuff we need for playing and showing a video 所有的东西我们需要播放和显示视频
     */
    private IRenderView.ISurfaceHolder mSurfaceHolder = null;
    /**
     * 视频宽度
     */
    private int mVideoWidth;
    /**
     * 视频高度
     */
    private int mVideoHeight;
    /**
     * 窗口宽度
     */
    private int mSurfaceWidth;
    /**
     * 窗口高度
     */
    private int mSurfaceHeight;
    /**
     * 视频旋转角度
     */
    private int mVideoRotationDegree;
    /**
     * 媒体播放器
     */
    private IMediaPlayer mMediaPlayer;
    /**
     * 媒体控制器
     */
    private IMediaController mMediaController;
    /**
     * 播放完成监听
     */
    private IMediaPlayer.OnCompletionListener mOnCompletionListener;
    /**
     * 播放准备监听
     */
    private IMediaPlayer.OnPreparedListener mOnPreparedListener;
    /**
     * 播放缓冲监听
     */
    private int mCurrentBufferPercentage;
    /**
     * 播放错误监听
     */
    private IMediaPlayer.OnErrorListener mOnErrorListener;
    /**
     * 播放其他信息监听
     */
    private IMediaPlayer.OnInfoListener mOnInfoListener;
    /**
     * recording the seek position while preparing 记录寻求位置而做准备
     */
    private long mSeekWhenPrepared;
    /**
     * 是否可以暂停
     */
    private boolean mCanPause = true;

    /** Subtitle rendering widget overlaid on top of the video. */
    // private RenderingWidget mSubtitleWidget;

    /**
     * Listener for changes to subtitle data, used to redraw when needed.
     */
    // private RenderingWidget.OnChangedListener mSubtitlesChangedListener;

    private Context mAppContext;
    private IRenderView mRenderView;
    private int mVideoSarNum;
    private int mVideoSarDen;
    /**
     * 使用Android播放器
     */
    private boolean usingAndroidPlayer = false;
    /**
     * 使用编解码器硬编码还是软编码，true 硬编码 false 为软编码
     */
    private boolean usingMediaCodec = false;
    /**
     * 使用编解码是否自转
     */
    private boolean usingMediaCodecAutoRotate = false;
    private boolean usingOpenSLES = false;
    /**
     * Auto Select=,RGB 565=fcc-rv16,RGB 888X=fcc-rv32,YV12=fcc-yv12,默认为RGB 888X
     */
    private String pixelFormat = "";//Auto Select=,RGB 565=fcc-rv16,RGB 888X=fcc-rv32,YV12=fcc-yv12,默认为RGB 888X
    private boolean enableBackgroundPlay = false;

    public IjkVideoView(Context context) {
        super(context);
        initVideoView(context);
    }

    public IjkVideoView(Context context, AttributeSet attrs) {
        super(context, attrs);
        initVideoView(context);
    }

    public IjkVideoView(Context context, AttributeSet attrs, int defStyleAttr) {
        super(context, attrs, defStyleAttr);
        initVideoView(context);
    }

    @TargetApi(Build.VERSION_CODES.LOLLIPOP)
    public IjkVideoView(Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes) {
        super(context, attrs, defStyleAttr, defStyleRes);
        initVideoView(context);
    }

    // REMOVED: onMeasure
    // REMOVED: onInitializeAccessibilityEvent
    // REMOVED: onInitializeAccessibilityNodeInfo
    // REMOVED: resolveAdjustedSize

    /**
     * 初始化视频view
     */
    private void initVideoView(Context context) {
        mAppContext = context.getApplicationContext();

        initBackground();
        initRenders();

        mVideoWidth = 0;
        mVideoHeight = 0;
        // REMOVED: getHolder().addCallback(mSHCallback);
        // REMOVED: getHolder().setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
        /** 设置为可触摸并且获取焦点 */
        setFocusable(true);
        setFocusableInTouchMode(true);
        requestFocus();
        // REMOVED: mPendingSubtitleTracks = new Vector<Pair<InputStream, MediaFormat>>();
        mCurrentState = PlayStateParams.STATE_IDLE;
        mTargetState = PlayStateParams.STATE_IDLE;
    }

    /**
     * 设置渲染器
     */
    public void setRenderView(IRenderView renderView) {
        if (mRenderView != null) {
            if (mMediaPlayer != null)
                mMediaPlayer.setDisplay(null);

            View renderUIView = mRenderView.getView();
            mRenderView.removeRenderCallback(mSHCallback);
            mRenderView = null;
            removeView(renderUIView);
        }

        if (renderView == null)
            return;

        mRenderView = renderView;
        renderView.setAspectRatio(mCurrentAspectRatio);
        if (mVideoWidth > 0 && mVideoHeight > 0)
            renderView.setVideoSize(mVideoWidth, mVideoHeight);
        if (mVideoSarNum > 0 && mVideoSarDen > 0)
            renderView.setVideoSampleAspectRatio(mVideoSarNum, mVideoSarDen);

        View renderUIView = mRenderView.getView();
        /**修复一个bug，宽度不填满问题，感谢热心兄弟的慧眼*/
        LayoutParams lp = new LayoutParams(
                LayoutParams.MATCH_PARENT,
                LayoutParams.WRAP_CONTENT,
                Gravity.CENTER);
        renderUIView.setLayoutParams(lp);
        addView(renderUIView);

        mRenderView.addRenderCallback(mSHCallback);
        mRenderView.setVideoRotation(mVideoRotationDegree);
    }

    /**
     * 设置旋转角度
     */
    public void setPlayerRotation(int rotation) {
        mVideoRotationDegree = rotation;
        if (mRenderView != null) {
            mRenderView.setVideoRotation(mVideoRotationDegree);
        }
    }

    /**
     * 旋转渲染器
     */
    public void setRender(int render) {
        switch (render) {
            case RENDER_TEXTURE_VIEW: {
                TextureRenderView renderView = new TextureRenderView(getContext());
                if (mMediaPlayer != null) {
                    renderView.getSurfaceHolder().bindToMediaPlayer(mMediaPlayer);
                    renderView.setVideoSize(mMediaPlayer.getVideoWidth(), mMediaPlayer.getVideoHeight());
                    renderView.setVideoSampleAspectRatio(mMediaPlayer.getVideoSarNum(), mMediaPlayer.getVideoSarDen());
                    renderView.setAspectRatio(mCurrentAspectRatio);
                }
                setRenderView(renderView);
                break;
            }
            case RENDER_SURFACE_VIEW: {
                SurfaceRenderView renderView = new SurfaceRenderView(getContext());
                setRenderView(renderView);
                break;
            }
            default:
                Log.e(TAG, String.format(Locale.getDefault(), "invalid render %d\n", render));
                break;
        }
    }

    /**
     * Sets video path.
     *
     * [@param](https://my.oschina.net/u/2303379) path the path of the video.
     */
    public void setVideoPath(String path) {
        setVideoURI(Uri.parse(path));
    }

    /**
     * Sets video URI.
     *
     * [@param](https://my.oschina.net/u/2303379) uri the URI of the video.
     */
    public void setVideoURI(Uri uri) {
        setVideoURI(uri, null);
    }

    /**
     * Sets video URI using specific headers.
     *
     * [@param](https://my.oschina.net/u/2303379) uri     the URI of the video.
     * [@param](https://my.oschina.net/u/2303379) headers the headers for the URI request.
     *                Note that the cross domain redirection is allowed by default, but that can be
     *                changed with key/value pairs through the headers parameter with
     *                "android-allow-cross-domain-redirect" as the key and "0" or "1" as the value
     *                to disallow or allow cross domain redirection.
     */
    private void setVideoURI(Uri uri, Map<String, String> headers) {
        mUri = uri;
        mHeaders = headers;
        mSeekWhenPrepared = 0;
        openVideo();
        requestLayout();
        invalidate();
    }

    // REMOVED: addSubtitleSource
    // REMOVED: mPendingSubtitleTracks

    /**
     * 停止视频
     */
    public void stopPlayback() {
        if (mMediaPlayer != null) {
            mMediaPlayer.stop();
            mMediaPlayer.release();
            mMediaPlayer = null;
            mCurrentState = PlayStateParams.STATE_IDLE;
            mTargetState = PlayStateParams.STATE_IDLE;
            AudioManager am = (AudioManager) mAppContext.getSystemService(Context.AUDIO_SERVICE);
            am.abandonAudioFocus(null);
        }
    }

    /**
     * 打开视频
     */
    private void openVideo() {
        if (mUri == null || mSurfaceHolder == null) {
            // not ready for playback just yet, will try again later
            return;
        }
        // we shouldn't clear the target state, because somebody might have
        // called start() previously
        release(false);

        AudioManager am = (AudioManager) mAppContext.getSystemService(Context.AUDIO_SERVICE);
        am.requestAudioFocus(null, AudioManager.STREAM_MUSIC, AudioManager.AUDIOFOCUS_GAIN);

        try {
            if (usingAndroidPlayer) {
                mMediaPlayer = new AndroidMediaPlayer();
            } else {
                IjkMediaPlayer ijkMediaPlayer = null;
                if (mUri != null) {
                    ijkMediaPlayer = new IjkMediaPlayer();
                    ijkMediaPlayer.native_setLogLevel(IjkMediaPlayer.IJK_LOG_DEBUG);

                    if (usingMediaCodec) {
                        ijkMediaPlayer.setOption(IjkMediaPlayer.OPT_CATEGORY_PLAYER, "mediacodec", 1);
                        if (usingMediaCodecAutoRotate) {
                            ijkMediaPlayer.setOption(IjkMediaPlayer.OPT_CATEGORY_PLAYER, "mediacodec-auto-rotate", 1);
                        } else {
                            ijkMediaPlayer.setOption(IjkMediaPlayer.OPT_CATEGORY_PLAYER, "mediacodec-auto-rotate", 0);
                        }
                    } else {
                        ijkMediaPlayer.setOption(IjkMediaPlayer.OPT_CATEGORY_PLAYER, "mediacodec", 0);
                    }

                    if (usingOpenSLES) {
                        ijkMediaPlayer.setOption(IjkMediaPlayer.OPT_CATEGORY_PLAYER, "opensles", 1);
                    } else {
                        ijkMediaPlayer.setOption(IjkMediaPlayer.OPT_CATEGORY_PLAYER, "opensles", 0);
                    }

                    if (TextUtils.isEmpty(pixelFormat)) {
                        ijkMediaPlayer.setOption(IjkMediaPlayer.OPT_CATEGORY_PLAYER, "overlay-format", IjkMediaPlayer.SDL_FCC_RV32);
                    } else {
                        ijkMediaPlayer.setOption(IjkMediaPlayer.OPT_CATEGORY_PLAYER, "overlay-format", pixelFormat);
                    }
                    ijkMediaPlayer.setOption(IjkMediaPlayer.OPT_CATEGORY_PLAYER, "framedrop", 1);
                    ijkMediaPlayer.setOption(IjkMediaPlayer.OPT_CATEGORY_PLAYER, "start-on-prepared", 0);

                    ijkMediaPlayer.setOption(IjkMediaPlayer.OPT_CATEGORY_FORMAT, "http-detect-range-support", 0);
                    ijkMediaPlayer.setOption(IjkMediaPlayer.OPT_CATEGORY_FORMAT, "timeout", 10000000);
                    ijkMediaPlayer.setOption(IjkMediaPlayer.OPT_CATEGORY_FORMAT, "reconnect", 1);

                    ijkMediaPlayer.setOption(IjkMediaPlayer.OPT_CATEGORY_CODEC, "skip_loop_filter", 48);
                }
                mMediaPlayer = ijkMediaPlayer;
            }

            if (enableBackgroundPlay) {
                mMediaPlayer = new TextureMediaPlayer(mMediaPlayer);
            }

            // TODO: create SubtitleController in MediaPlayer, but we need
            // a context for the subtitle renderers
            final Context context = getContext();
            // REMOVED: SubtitleController

            // REMOVED: mAudioSession
            /**视频准备播放监听*/
            mMediaPlayer.setOnPreparedListener(mPreparedListener);
            /**视频播放完成监听*/
            mMediaPlayer.setOnCompletionListener(mCompletionListener);
            /**视频错误监听*/
            mMediaPlayer.setOnErrorListener(mErrorListener);
            /**视频其他信息监听*/
            mMediaPlayer.setOnInfoListener(mInfoListener);
            /**视频界面大小改变监听*/
            mMediaPlayer.setOnVideoSizeChangedListener(mSizeChangedListener);
            /**视频缓冲监听*/
            mMediaPlayer.setOnBufferingUpdateListener(mBufferingUpdateListener);
            mCurrentBufferPercentage = 0;
            String scheme = mUri.getScheme();
            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M &&
                    usingAndroidPlayer &&
                    (TextUtils.isEmpty(scheme) || scheme.equalsIgnoreCase("file"))) {
                IMediaDataSource dataSource = new FileMediaDataSource(new File(mUri.toString()));
                mMediaPlayer.setDataSource(dataSource);
            } else if (Build.VERSION.SDK_INT > Build.VERSION_CODES.ICE_CREAM_SANDWICH) {
                mMediaPlayer.setDataSource(mAppContext, mUri, mHeaders);
            } else {
                mMediaPlayer.setDataSource(mUri.toString());
            }
            bindSurfaceHolder(mMediaPlayer, mSurfaceHolder);
            mMediaPlayer.setAudioStreamType(AudioManager.STREAM_MUSIC);
            mMediaPlayer.setScreenOnWhilePlaying(true);
            mMediaPlayer.prepareAsync();

            // REMOVED: mPendingSubtitleTracks

            // we don't set the target state here either, but preserve the target state that was there before.我们这里不设置目标状态,但保护的目标状态
            mCurrentState = PlayStateParams.STATE_PREPARING;
            attachMediaController();
        } catch (IOException ex) {
            Log.w(TAG, "Unable to open content: " + mUri, ex);
            mCurrentState = PlayStateParams.STATE_ERROR;
            mTargetState = PlayStateParams.STATE_ERROR;
            mErrorListener.onError(mMediaPlayer, MediaPlayer.MEDIA_ERROR_UNKNOWN, 0);
            return;
        } catch (IllegalArgumentException ex) {
            Log.w(TAG, "Unable to open content: " + mUri, ex);
            mCurrentState = PlayStateParams.STATE_ERROR;
            mTargetState = PlayStateParams.STATE_ERROR;
            mErrorListener.onError(mMediaPlayer, MediaPlayer.MEDIA_ERROR_UNKNOWN, 0);
            return;
        } finally {
            // REMOVED: mPendingSubtitleTracks.clear();
        }
    }

    public void setMediaController(IMediaController controller) {
        if (mMediaController != null) {
            mMediaController.hide();
        }
        mMediaController = controller;
        attachMediaController();
    }

    private void attachMediaController() {
        if (mMediaPlayer != null && mMediaController != null) {
            mMediaController.setMediaPlayer(this);
            View anchorView = this.getParent() instanceof View ?
                    (View) this.getParent() : this;
            mMediaController.setAnchorView(anchorView);
            mMediaController.setEnabled(isInPlaybackState());
        }
    }

    IMediaPlayer.OnVideoSizeChangedListener mSizeChangedListener =
            new IMediaPlayer.OnVideoSizeChangedListener() {
                public void onVideoSizeChanged(IMediaPlayer mp, int width, int height, int sarNum, int sarDen) {
                    mVideoWidth = mp.getVideoWidth();
                    mVideoHeight = mp.getVideoHeight();
                    mVideoSarNum = mp.getVideoSarNum();
                    mVideoSarDen = mp.getVideoSarDen();
                    if (mVideoWidth != 0 && mVideoHeight != 0) {
                        if (mRenderView != null) {
                            mRenderView.setVideoSize(mVideoWidth, mVideoHeight);
                            mRenderView.setVideoSampleAspectRatio(mVideoSarNum, mVideoSarDen);
                        }
                        // REMOVED: getHolder().setFixedSize(mVideoWidth, mVideoHeight);
                        requestLayout();
                    }
                }
            };

    IMediaPlayer.OnPreparedListener mPreparedListener = new IMediaPlayer.OnPreparedListener() {

        public void onPrepared(IMediaPlayer mp) {
            // we don't set the target state here either, but preserve the target state that was there before.我们这里不设置目标状态,但保护的目标状态
            mCurrentState = PlayStateParams.STATE_PREPARED;

            // Get the capabilities of the player for this stream
            // REMOVED: Metadata

            if (mOnPreparedListener != null) {
                mOnPreparedListener.onPrepared(mMediaPlayer);
            }
            if (mMediaController != null) {
                mMediaController.setEnabled(true);
            }
            if (mOnInfoListener != null) {
                mOnInfoListener.onInfo(mMediaPlayer, mCurrentState, 0);
            }
            mVideoWidth = mp.getVideoWidth();
            mVideoHeight = mp.getVideoHeight();

            long seekToPosition = mSeekWhenPrepared;  // mSeekWhenPrepared may be changed after seekTo() call
            if (seekToPosition != 0) {
                seekTo((int) seekToPosition);
            }
            if (mVideoWidth != 0 && mVideoHeight != 0) {
                //Log.i("@@@@", "video size: " + mVideoWidth +"/"+ mVideoHeight);
                // REMOVED: getHolder().setFixedSize(mVideoWidth, mVideoHeight);
                if (mRenderView != null) {
                    mRenderView.setVideoSize(mVideoWidth, mVideoHeight);
                    mRenderView.setVideoSampleAspectRatio(mVideoSarNum, mVideoSarDen);
                    if (!mRenderView.shouldWaitForResize() || mSurfaceWidth == mVideoWidth && mSurfaceHeight == mVideoHeight) {
                        // We didn't actually change the size (it was already at the size
                        // we need), so we won't get a "surface changed" callback, so
                        // start the video here instead of in the callback.
                        if (mTargetState == PlayStateParams.STATE_PLAYING) {
                            start();
                            if (mMediaController != null) {
                                mMediaController.show();
                            }
                        } else if (!isPlaying() &&
                                (seekToPosition != 0 || getCurrentPosition() > 0)) {
                            if (mMediaController != null) {
                                // Show the media controls when we're paused into a video and make 'em stick.
                                mMediaController.show(0);
                            }
                        }
                    }
                }
            } else {
                // We don't know the video size yet, but should start anyway.
                // The video size might be reported to us later.
                if (mTargetState == PlayStateParams.STATE_PLAYING) {
                    start();
                }
            }
        }
    };

    private IMediaPlayer.OnCompletionListener mCompletionListener =
            new IMediaPlayer.OnCompletionListener() {
                public void onCompletion(IMediaPlayer mp) {
                    mCurrentState = PlayStateParams.STATE_COMPLETED;
                    mTargetState = PlayStateParams.STATE_COMPLETED;
                    if (mMediaController != null) {
                        mMediaController.hide();
                    }
                    if (mOnCompletionListener != null) {
                        mOnCompletionListener.onCompletion(mMediaPlayer);
                    }
                    if (mOnInfoListener != null) {
                        mOnInfoListener.onInfo(mMediaPlayer, PlayStateParams.STATE_COMPLETED, 0);
                    }
                }
            };

    private IMediaPlayer.OnInfoListener mInfoListener =
            new IMediaPlayer.OnInfoListener() {
                public boolean onInfo(IMediaPlayer mp, int arg1, int arg2) {
                    if (mOnInfoListener != null) {
                        mOnInfoListener.onInfo(mp, arg1, arg2);
                    }
                    switch (arg1) {
                        case IMediaPlayer.MEDIA_INFO_VIDEO_TRACK_LAGGING:
                            Log.d(TAG, "MEDIA_INFO_VIDEO_TRACK_LAGGING:");
                            break;
                        case IMediaPlayer.MEDIA_INFO_VIDEO_RENDERING_START:
                            Log.d(TAG, "MEDIA_INFO_VIDEO_RENDERING_START:");
                            break;
                        case IMediaPlayer.MEDIA_INFO_BUFFERING_START:
                            Log.d(TAG, "MEDIA_INFO_BUFFERING_START:");
                            break;
                        case IMediaPlayer.MEDIA_INFO_BUFFERING_END:
                            Log.d(TAG, "MEDIA_INFO_BUFFERING_END:");
                            break;
                        case IMediaPlayer.MEDIA_INFO_NETWORK_BANDWIDTH:
                            Log.d(TAG, "MEDIA_INFO_NETWORK_BANDWIDTH: " + arg2);
                            break;
                        case IMediaPlayer.MEDIA_INFO_BAD_INTERLEAVING:
                            Log.d(TAG, "MEDIA_INFO_BAD_INTERLEAVING:");
                            break;
                        case IMediaPlayer.MEDIA_INFO_NOT_SEEKABLE:
                            Log.d(TAG, "MEDIA_INFO_NOT_SEEKABLE:");
                            break;
                        case IMediaPlayer.MEDIA_INFO_METADATA_UPDATE:
                            Log.d(TAG, "MEDIA_INFO_METADATA_UPDATE:");
                            break;
                        case IMediaPlayer.MEDIA_INFO_UNSUPPORTED_SUBTITLE:
                            Log.d(TAG, "MEDIA_INFO_UNSUPPORTED_SUBTITLE:");
                            break;
                        case IMediaPlayer.MEDIA_INFO_SUBTITLE_TIMED_OUT:
                            Log.d(TAG, "MEDIA_INFO_SUBTITLE_TIMED_OUT:");
                            break;
                        case IMediaPlayer.MEDIA_INFO_VIDEO_ROTATION_CHANGED:
                            mVideoRotationDegree = arg2;
                            Log.d(TAG, "MEDIA_INFO_VIDEO_ROTATION_CHANGED: " + arg2);
                            if (mRenderView != null)
                                mRenderView.setVideoRotation(arg2);
                            break;
                        case IMediaPlayer.MEDIA_INFO_AUDIO_RENDERING_START:
                            Log.d(TAG, "MEDIA_INFO_AUDIO_RENDERING_START:");
                            break;
                    }
                    return true;
                }
            };

    private IMediaPlayer.OnErrorListener mErrorListener =
            new IMediaPlayer.OnErrorListener() {
                public boolean onError(IMediaPlayer mp, int framework_err, int impl_err) {
                    Log.d(TAG, "Error: " + framework_err + "," + impl_err);
                    mCurrentState = PlayStateParams.STATE_ERROR;
                    mTargetState = PlayStateParams.STATE_ERROR;
                    if (mMediaController != null) {
                        mMediaController.hide();
                    }


                    if (mOnErrorListener != null) {
                        mOnErrorListener.onError(mMediaPlayer, framework_err, impl_err);
                    }
                    /* If an error handler has been supplied, use it and finish. */
                    if (mOnInfoListener != null) {
                        if (mOnInfoListener.onInfo(mMediaPlayer, framework_err, 0)) {
                            return true;
                        }
                    }

                    /* Otherwise, pop up an error dialog so the user knows that
                     * something bad has happened. Only try and pop up the dialog
                     * if we're attached to a window. When we're going away and no
                     * longer have a window, don't bother showing the user an error.
                     */
                    if (getWindowToken() != null) {
                        Resources r = mAppContext.getResources();
                        String message = "Unknown error";

                        if (framework_err == MediaPlayer.MEDIA_ERROR_NOT_VALID_FOR_PROGRESSIVE_PLAYBACK) {
                            message = "Invalid progressive playback";
                        }

                        new AlertDialog.Builder(getContext())
                                .setMessage(message)
                                .setPositiveButton("error",
                                        new DialogInterface.OnClickListener() {
                                            public void onClick(DialogInterface dialog, int whichButton) {
                                            /* If we get here, there is no onError listener, so
                                             * at least inform them that the video is over.
                                             */
                                                if (mOnCompletionListener != null) {
                                                    mOnCompletionListener.onCompletion(mMediaPlayer);
                                                }
                                            }
                                        })
                                .setCancelable(false)
                                .show();
                    }
                    return true;
                }
            };

    private IMediaPlayer.OnBufferingUpdateListener mBufferingUpdateListener =
            new IMediaPlayer.OnBufferingUpdateListener() {
                public void onBufferingUpdate(IMediaPlayer mp, int percent) {
                    mCurrentBufferPercentage = percent;
                }
            };

    /**
     * Register a callback to be invoked when the media file
     * is loaded and ready to go.
     *
     * @param l The callback that will be run
     */
    public void setOnPreparedListener(IMediaPlayer.OnPreparedListener l) {
        mOnPreparedListener = l;
    }

    /**
     * Register a callback to be invoked when the end of a media file
     * has been reached during playback.
     *
     * @param l The callback that will be run
     */
    public void setOnCompletionListener(IMediaPlayer.OnCompletionListener l) {
        mOnCompletionListener = l;
    }

    /**
     * Register a callback to be invoked when an error occurs
     * during playback or setup.  If no listener is specified,
     * or if the listener returned false, VideoView will inform
     * the user of any errors.
     *
     * @param l The callback that will be run
     */
    public void setOnErrorListener(IMediaPlayer.OnErrorListener l) {
        mOnErrorListener = l;
    }

    /**
     * Register a callback to be invoked when an informational event
     * occurs during playback or setup.
     *
     * @param l The callback that will be run
     */
    public void setOnInfoListener(IMediaPlayer.OnInfoListener l) {
        mOnInfoListener = l;
    }

    // REMOVED: mSHCallback
    private void bindSurfaceHolder(IMediaPlayer mp, IRenderView.ISurfaceHolder holder) {
        if (mp == null)
            return;

        if (holder == null) {
            mp.setDisplay(null);
            return;
        }

        holder.bindToMediaPlayer(mp);
    }

    IRenderView.IRenderCallback mSHCallback = new IRenderView.IRenderCallback() {
        @Override
        public void onSurfaceChanged(@NonNull IRenderView.ISurfaceHolder holder, int format, int w, int h) {
            if (holder.getRenderView() != mRenderView) {
                Log.e(TAG, "onSurfaceChanged: unmatched render callback\n");
                return;
            }

            mSurfaceWidth = w;
            mSurfaceHeight = h;
            boolean isValidState = (mTargetState == PlayStateParams.STATE_PLAYING);
            boolean hasValidSize = !mRenderView.shouldWaitForResize() || (mVideoWidth == w && mVideoHeight == h);
            if (mMediaPlayer != null && isValidState && hasValidSize) {
                if (mSeekWhenPrepared != 0) {
                    seekTo((int) mSeekWhenPrepared);
                }
                start();
            }
        }

        @Override
        public void onSurfaceCreated(@NonNull IRenderView.ISurfaceHolder holder, int width, int height) {
            if (holder.getRenderView() != mRenderView) {
                Log.e(TAG, "onSurfaceCreated: unmatched render callback\n");
                return;
            }

            mSurfaceHolder = holder;
            if (mMediaPlayer != null)
                bindSurfaceHolder(mMediaPlayer, holder);
            else
                openVideo();
        }

        @Override
        public void onSurfaceDestroyed(@NonNull IRenderView.ISurfaceHolder holder) {
            if (holder.getRenderView() != mRenderView) {
                Log.e(TAG, "onSurfaceDestroyed: unmatched render callback\n");
                return;
            }

            // after we return from this we can't use the surface any more
            mSurfaceHolder = null;
            // REMOVED: if (mMediaController != null) mMediaController.hide();
            // REMOVED: release(true);
            releaseWithoutStop();
        }
    };

    public void releaseWithoutStop() {
        if (mMediaPlayer != null)
            mMediaPlayer.setDisplay(null);
    }

    /*
     * release the media player in any state
     */
    public void release(boolean cleartargetstate) {
        if (mMediaPlayer != null) {
            mMediaPlayer.reset();
            mMediaPlayer.release();
            mMediaPlayer = null;
            // REMOVED: mPendingSubtitleTracks.clear();
            mCurrentState = PlayStateParams.STATE_IDLE;
            if (cleartargetstate) {
                mTargetState = PlayStateParams.STATE_IDLE;
            }
            AudioManager am = (AudioManager) mAppContext.getSystemService(Context.AUDIO_SERVICE);
            am.abandonAudioFocus(null);
        }
    }

    @Override
    public boolean onTouchEvent(MotionEvent ev) {
        if (isInPlaybackState() && mMediaController != null) {
            toggleMediaControlsVisiblity();
        }
        return false;
    }

    @Override
    public boolean onTrackballEvent(MotionEvent ev) {
        if (isInPlaybackState() && mMediaController != null) {
            toggleMediaControlsVisiblity();
        }
        return false;
    }

    @Override
    public boolean onKeyDown(int keyCode, KeyEvent event) {
        boolean isKeyCodeSupported = keyCode != KeyEvent.KEYCODE_BACK &&
                keyCode != KeyEvent.KEYCODE_VOLUME_UP &&
                keyCode != KeyEvent.KEYCODE_VOLUME_DOWN &&
                keyCode != KeyEvent.KEYCODE_VOLUME_MUTE &&
                keyCode != KeyEvent.KEYCODE_MENU &&
                keyCode != KeyEvent.KEYCODE_CALL &&
                keyCode != KeyEvent.KEYCODE_ENDCALL;
        if (isInPlaybackState() && isKeyCodeSupported && mMediaController != null) {
            if (keyCode == KeyEvent.KEYCODE_HEADSETHOOK ||
                    keyCode == KeyEvent.KEYCODE_MEDIA_PLAY_PAUSE) {
                if (mMediaPlayer.isPlaying()) {
                    pause();
                    mMediaController.show();
                } else {
                    start();
                    mMediaController.hide();
                }
                return true;
            } else if (keyCode == KeyEvent.KEYCODE_MEDIA_PLAY) {
                if (!mMediaPlayer.isPlaying()) {
                    start();
                    mMediaController.hide();
                }
                return true;
            } else if (keyCode == KeyEvent.KEYCODE_MEDIA_STOP
                    || keyCode == KeyEvent.KEYCODE_MEDIA_PAUSE) {
                if (mMediaPlayer.isPlaying()) {
                    pause();
                    mMediaController.show();
                }
                return true;
            } else {
                toggleMediaControlsVisiblity();
            }
        }

        return super.onKeyDown(keyCode, event);
    }

    private void toggleMediaControlsVisiblity() {
        if (mMediaController.isShowing()) {
            mMediaController.hide();
        } else {
            mMediaController.show();
        }
    }

    @Override
    public void start() {
        if (isInPlaybackState()) {
            mMediaPlayer.start();
            mCurrentState = PlayStateParams.STATE_PLAYING;
        } else {
        }
        mTargetState = PlayStateParams.STATE_PLAYING;
    }

    @Override
    public void pause() {
        if (isInPlaybackState()) {
            if (mMediaPlayer.isPlaying()) {
                mMediaPlayer.pause();
                mCurrentState = PlayStateParams.STATE_PAUSED;
            }
        }
        mTargetState = PlayStateParams.STATE_PAUSED;
    }

    public void onPause() {
        release(false);
    }

    public void onResume() {
        openVideo();
    }

    @Override
    public int getDuration() {
        if (isInPlaybackState()) {
            return (int) mMediaPlayer.getDuration();
        }
        return -1;
    }

    @Override
    public int getCurrentPosition() {
        if (isInPlaybackState()) {
            return (int) mMediaPlayer.getCurrentPosition();
        }
        return 0;
    }

    @Override
    public void seekTo(int msec) {
        if (isInPlaybackState()) {
            mMediaPlayer.seekTo(msec);
            mSeekWhenPrepared = 0;
        } else {
            mSeekWhenPrepared = msec;
        }
    }

    @Override
    public boolean isPlaying() {
        return isInPlaybackState() && mMediaPlayer.isPlaying();
    }

    @Override
    public int getBufferPercentage() {
        if (mMediaPlayer != null) {
            return mCurrentBufferPercentage;
        }
        return 0;
    }

    private boolean isInPlaybackState() {
        return (mMediaPlayer != null &&
                mCurrentState != PlayStateParams.STATE_ERROR &&
                mCurrentState != PlayStateParams.STATE_IDLE &&
                mCurrentState != PlayStateParams.STATE_PREPARING);
    }

    @Override
    public boolean canPause() {
        return mCanPause;
    }

    @Override
    public boolean canSeekBackward() {
        return false;
    }

    @Override
    public boolean canSeekForward() {
        return false;
    }

    @Override
    public int getAudioSessionId() {
        return 0;
    }

    // REMOVED: getAudioSessionId();
    // REMOVED: onAttachedToWindow();
    // REMOVED: onDetachedFromWindow();
    // REMOVED: onLayout();
    // REMOVED: draw();
    // REMOVED: measureAndLayoutSubtitleWidget();
    // REMOVED: setSubtitleWidget();
    // REMOVED: getSubtitleLooper();

    //-------------------------
    // Extend: Aspect Ratio
    //-------------------------

    private static final int[] s_allAspectRatio = {
            IRenderView.AR_ASPECT_FIT_PARENT,
            IRenderView.AR_ASPECT_FILL_PARENT,
            IRenderView.AR_ASPECT_WRAP_CONTENT,
            IRenderView.AR_MATCH_PARENT,
            IRenderView.AR_16_9_FIT_PARENT,
            IRenderView.AR_4_3_FIT_PARENT};
    private int mCurrentAspectRatioIndex = 0;
    private int mCurrentAspectRatio = s_allAspectRatio[mCurrentAspectRatioIndex];

    public int toggleAspectRatio() {
        mCurrentAspectRatioIndex++;
        mCurrentAspectRatioIndex %= s_allAspectRatio.length;

        mCurrentAspectRatio = s_allAspectRatio[mCurrentAspectRatioIndex];
        if (mRenderView != null)
            mRenderView.setAspectRatio(mCurrentAspectRatio);
        return mCurrentAspectRatio;
    }

    //-------------------------
    // Extend: Render
    //-------------------------
    public static final int RENDER_SURFACE_VIEW = 1;
    public static final int RENDER_TEXTURE_VIEW = 2;

    private List<Integer> mAllRenders = new ArrayList<Integer>();
    private int mCurrentRenderIndex = 0;
    private int mCurrentRender = RENDER_SURFACE_VIEW;

    /**
     * 初始化渲染器
     */
    private void initRenders() {
        mAllRenders.clear();
        /**添加surface渲染*/
        mAllRenders.add(RENDER_SURFACE_VIEW);
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.ICE_CREAM_SANDWICH) {
            /**添加texture渲染*/
            mAllRenders.add(RENDER_TEXTURE_VIEW);
            mCurrentRenderIndex = 1;
        } else {
            mCurrentRenderIndex = 0;
        }
        mCurrentRender = mAllRenders.get(mCurrentRenderIndex);
        setRender(mCurrentRender);
    }

    //-------------------------
    // Extend: Background
    //-------------------------

    /**
     * 初始化背景
     */
    private void initBackground() {
        if (enableBackgroundPlay) {
//            MediaPlayerService.intentToStart(getContext());
//            mMediaPlayer = MediaPlayerService.getMediaPlayer();
        }
    }

    /**
     * 设置播放区域拉伸类型
     */
    public void setAspectRatio(int aspectRatio) {
        for (int i = 0; i < s_allAspectRatio.length; i++) {
            if (s_allAspectRatio[i] == aspectRatio) {
                mCurrentAspectRatioIndex = i;
                if (mRenderView != null) {
                    mRenderView.setAspectRatio(mCurrentAspectRatio);
                }
                break;
            }
        }
    }
}

转载于:https://my.oschina.net/u/3491516/blog/967937