Example usage for android.media MediaPlayer prepareAsync

Introduction

In this page you can find the example usage for android.media MediaPlayer prepareAsync.

Prototype

public native void prepareAsync() throws IllegalStateException;

Source Link

Document

Prepares the player for playback, asynchronously.

Usage

From source file:github.popeen.dsub.service.DownloadService.java

private synchronized void doPlay(final DownloadFile downloadFile, final int position, final boolean start) {
    try {/* w  ww. ja va2 s . c om*/
        subtractPosition = 0;
        mediaPlayer.setOnCompletionListener(null);
        mediaPlayer.setOnPreparedListener(null);
        mediaPlayer.setOnErrorListener(null);
        mediaPlayer.reset();
        setPlayerState(IDLE);
        try {
            mediaPlayer.setAudioSessionId(audioSessionId);
        } catch (Throwable e) {
            mediaPlayer.setAudioStreamType(AudioManager.STREAM_MUSIC);
        }

        String dataSource;
        boolean isPartial = false;
        if (downloadFile.isStream()) {
            dataSource = downloadFile.getStream();
            Log.i(TAG, "Data Source: " + dataSource);
        } else {
            downloadFile.setPlaying(true);
            final File file = downloadFile.isCompleteFileAvailable() ? downloadFile.getCompleteFile()
                    : downloadFile.getPartialFile();
            isPartial = file.equals(downloadFile.getPartialFile());
            downloadFile.updateModificationDate();

            dataSource = file.getAbsolutePath();
            if (isPartial && !Util.isOffline(this)) {
                if (proxy == null) {
                    proxy = new BufferProxy(this);
                    proxy.start();
                }
                proxy.setBufferFile(downloadFile);
                dataSource = proxy.getPrivateAddress(dataSource);
                Log.i(TAG, "Data Source: " + dataSource);
            } else if (proxy != null) {
                proxy.stop();
                proxy = null;
            }
        }

        mediaPlayer.setDataSource(dataSource);
        setPlayerState(PREPARING);

        mediaPlayer.setOnBufferingUpdateListener(new MediaPlayer.OnBufferingUpdateListener() {
            public void onBufferingUpdate(MediaPlayer mp, int percent) {
                Log.i(TAG, "Buffered " + percent + "%");
                if (percent == 100) {
                    mediaPlayer.setOnBufferingUpdateListener(null);
                }
            }
        });

        mediaPlayer.setOnPreparedListener(new MediaPlayer.OnPreparedListener() {
            public void onPrepared(MediaPlayer mediaPlayer) {
                try {
                    setPlayerState(PREPARED);

                    synchronized (DownloadService.this) {
                        if (position != 0) {
                            Log.i(TAG, "Restarting player from position " + position);
                            mediaPlayer.seekTo(position);
                        }
                        cachedPosition = position;

                        applyReplayGain(mediaPlayer, downloadFile);

                        if (start || autoPlayStart) {
                            mediaPlayer.start();
                            applyPlaybackParamsMain();
                            setPlayerState(STARTED);

                            // Disable autoPlayStart after done
                            autoPlayStart = false;
                        } else {
                            setPlayerState(PAUSED);
                            onSongProgress();
                        }

                        updateRemotePlaylist();
                    }

                    // Only call when starting, setPlayerState(PAUSED) already calls this
                    if (start) {
                        lifecycleSupport.serializeDownloadQueue();
                    }
                } catch (Exception x) {
                    handleError(x);
                }
            }
        });

        setupHandlers(downloadFile, isPartial, start);

        mediaPlayer.prepareAsync();
    } catch (Exception x) {
        handleError(x);
    }
}

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