BasicPlayer layer is the simple player API of jlGui. These classes are designed to be used in any application that needs simple features (play, stop, pause, resume, seek) to play audio file or stream. It's a high-level API over JavaSound API.First off, let's start by defining our class properties, so that our goals are clear, we want to have access to most of this kind of information
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 | //Extension of BasicPlayer private static AudioPlayer instance = null; private ArrayList<String> playlist = new ArrayList<String>(); private int index = 0; private boolean paused = true; private boolean opened = false; private boolean isSeeking = false; //Current Audio Properties private float audioDurationInSeconds = 0; private int audioFrameSize = 0; private float audioFrameRate = 0; //Stream info/status private byte[] cpcmdata; private long csms = 0; //Current Song microseconds private int lastSeekMs = 0; //Every time we seek, basic player returns microseconds are resetted //we need a var to mantain the position we seeked to |
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 | public class AudioPlayer extends BasicPlayer{ //Want to use a singleton private AudioPlayer() { super(); //Wanna give the AudioPlayer class a basic behaviour this.addBasicPlayerListener(new BasicPlayerListener() { @Override public void stateUpdated(BasicPlayerEvent event) { if(event.getCode() == BasicPlayerEvent.EOM) { lastSeekMs = 0; paused = true; //reset player state opened = false; log("EOM event catched, player resetted."); } if(event.getCode() == BasicPlayerEvent.SEEKING) isSeeking = true; if(event.getCode() == BasicPlayerEvent.SEEKED) isSeeking = false; } @Override public void setController(BasicController arg0) { //No need to use this } @Override public void progress(int bytesread, long microseconds, byte[] pcmdata, Map properties) { csms = microseconds; cpcmdata = pcmdata; } @Override public void opened(Object stream, Map properties) { log("Opened event caught"); Object[] e = properties.entrySet().toArray(); Object[] k = properties.keySet().toArray(); String line = "Stream properties:"; for(int i = 0; i<properties.size(); i++){ line += "\n\t" + k[i] + ":" + e[i]; } log(line); //Set Audio Properties File file = new File(playlist.get(index)); long audioFileLength = file.length(); int frameSize = (int) properties.get("mp3.framesize.bytes"); float frameRate = (float) properties.get("mp3.framerate.fps"); audioFrameSize = frameSize; audioFrameRate = frameRate; audioDurationInSeconds = (audioFileLength / (frameSize * frameRate)); log("\tframesize " + frameSize + " framerate " + frameRate); log("\tAudio File lenght in seconds is: " + audioDurationInSeconds); } }); } public static AudioPlayer getInstance(){ if(instance == null) instance = new AudioPlayer(); return instance; } ///////////////////////////////////// } |
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 | @Override public void play() throws BasicPlayerException { if(playlist.size() == 0) return; if(!paused || !opened){ File f = new File(playlist.get(index)); log("Opening file... " + f.getAbsolutePath()); open(f); opened = true; super.play(); } if(paused) super.resume(); paused = false; } @Override public void pause() throws BasicPlayerException { log("Paused"); paused = true; super.pause(); } @Override public void stop() throws BasicPlayerException { paused = false; super.stop(); } public boolean isPaused(){ return paused; } public boolean isOpenFile() { return opened; } public ArrayList<String> getPlaylist(){ return playlist; } public int getIndexSong(){ return index; } public void setIndexSong(int index){ this.index = index; lastSeekMs = 0; } public boolean isSeeking() { return isSeeking; } /** * goes to the next song in playlist and plays it * @throws BasicPlayerException */ public void nextSong() throws BasicPlayerException{ if(playlist.size() == 0) return; lastSeekMs = 0; paused = false; index = (index+1)%playlist.size(); play(); } /** * goes to the previous song and plays it * @throws BasicPlayerException */ public void prvSong() throws BasicPlayerException{ if(playlist.size() == 0) return; lastSeekMs = 0; paused = false; index = (index-1)%playlist.size(); play(); } /** * Adds a song to the playlist * @param songPath */ public void addSong(String songPath) { playlist.add(songPath); } /** * Remove a song by index * @param index */ public void removeSong(int index) { playlist.remove(index); } /** * Remove a song by songPath * @param songPath */ public void removeSong(String songPath) { playlist.remove(songPath); } public byte[] getPcmData(){return cpcmdata;} public long getProgressMicroseconds(){return csms+lastSeekMs;} public float getAudioDurationSeconds() {return audioDurationInSeconds;} public float getAudioFrameRate() { return audioFrameRate; } public float getAudioFrameSize() { return audioFrameSize; } /** * Remembers what's the last position relative to the playing song * when seeking */ public void setLastSeekPositionInMs(int seekMs) { lastSeekMs = seekMs; } /** * For logging * @param line */ private void log(String line) { System.out.println("AudioPlayer] " + line); MainView.stf.addText("AudioPlayer] " + line); } //End of class |
