Java 类com.google.android.exoplayer2.source.SingleSampleMediaSource 实例源码

@Override
protected MediaSource[] doInBackground(MediaFile... media) {
    try {
        browser = Browser.getInstance(Config.mountDirectory);

        DataSource.Factory dataSourceFactory = new NfsDataSourceFactory(browser.getContext());
        ExtractorsFactory extractorsFactory = new DefaultExtractorsFactory();
        MediaSource videoSource = new ExtractorMediaSource(Uri.parse("nfs://host/" + media[0].getPath()), dataSourceFactory, extractorsFactory, null, null);

        if (media[0].getSubtitlePath() != null) {
            Format subtitleFormat = Format.createTextSampleFormat(null, MimeTypes.APPLICATION_SUBRIP, null, Format.NO_VALUE, Format.NO_VALUE, "en", null);
            MediaSource subtitleSource = new SingleSampleMediaSource(Uri.parse("nfs://host/" + media[0].getSubtitlePath()), dataSourceFactory, subtitleFormat, Long.MAX_VALUE, 0);

            return new MediaSource[]{videoSource, subtitleSource};
        } else
            return new MediaSource[]{videoSource};
    } catch (IOException e) {
        e.printStackTrace();
    }

    return null;
}

/**
 * 加载字幕
 * @param srtUri
 * @param mediaSource
 */
private MediaSource TextSubtitle(Uri srtUri, MediaSource mediaSource){
    Format textFormat = Format.createTextSampleFormat(null, MimeTypes.APPLICATION_SUBRIP,
            null, Format.NO_VALUE, Format.NO_VALUE, Locale.getDefault().getLanguage(), null);
    MediaSource textMediaSource = new SingleSampleMediaSource(srtUri, mediaDataSourceFactory, textFormat, C.TIME_UNSET);

    return new MergingMediaSource(mediaSource, textMediaSource);
}

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_video);
    Bundle bundle = getIntent().getExtras();
    if(bundle!=null && bundle.containsKey("multimedia")) {

        Multimedia multimedia = bundle.getParcelable("multimedia");
        SimpleExoPlayerView videoView = (SimpleExoPlayerView) findViewById(R.id.video);

        // 1. Crea un slector de pista por defecto
        BandwidthMeter bandwidthMeter = new DefaultBandwidthMeter();
        TrackSelection.Factory videoTrackSelectionFactory = new AdaptiveVideoTrackSelection.Factory(bandwidthMeter);
        TrackSelector trackSelector = new DefaultTrackSelector(videoTrackSelectionFactory);

        // 2. Creo un control para el player
        LoadControl loadControl = new DefaultLoadControl();

        // 3. Creo el player con los componentes anteriores
        player = ExoPlayerFactory.newSimpleInstance(getApplicationContext(), trackSelector, loadControl);

        //Obtengo la URL completa del archivo de video
        Uri uri = Uri.parse(ConsultasBBDD.server + ConsultasBBDD.imagenes +  multimedia.getUrl());

        //A la vista le establezco el reproductor que va a usar
        videoView.setPlayer(player);

        // Procuce que se instancie el DataSource a través de los datos del video que ha sido cargado.
        DataSource.Factory dataSourceFactory = new DefaultDataSourceFactory(getApplicationContext(), Util.getUserAgent(getApplicationContext(), "SmartU"));
        // Produce un extractor que parsea el video.
        ExtractorsFactory extractorsFactory = new DefaultExtractorsFactory();
        // Construyo un MediaSource con el formato y los datos del video para asignarselo al reproductor.
        MediaSource videoSource = new ExtractorMediaSource(uri, dataSourceFactory, extractorsFactory, null, null);
        // If has subtitles load video with subtitles
        if (multimedia.getUrlSubtitulos() != null && multimedia.getUrlSubtitulos().compareTo("") != 0) {
            //Obtengo la URL completa para los subtitulos del video
            Uri subtitulosUri = Uri.parse(ConsultasBBDD.server + ConsultasBBDD.imagenes +  multimedia.getUrlSubtitulos());
            //Asigno el formato de los subtitulos
            Format textFormat = Format.createTextSampleFormat(null, MimeTypes.TEXT_VTT,
                    null, Format.NO_VALUE, Format.NO_VALUE, Locale.getDefault().getLanguage(), null);
            //Creo un MediaSource para los subtitulos para añadirselos al video
            MediaSource subtitleSource = new SingleSampleMediaSource(subtitulosUri, dataSourceFactory, textFormat, C.TIME_UNSET);
            // Mezcla el video con los subtitulos
            MergingMediaSource mergedSource = new MergingMediaSource(videoSource, subtitleSource);
            // Preparo el reproductor con los subtitulos y el video
            player.prepare(mergedSource);
        } else // Si no tiene subtitulos preparo solo el video
            player.prepare(videoSource);
    }
}

public MediaSource getMediaSourceSubtitle(){
    return new SingleSampleMediaSource(this.getSubtitleUri(),this.getDataSourceFactory(), this.getFormat(), C.TIME_UNSET);
}