!7

lib 1006985 // JAAD for AAC decoding

import net.sourceforge.jaad.mp4.*;

import net.sourceforge.jaad.mp4.api.*;

import net.sourceforge.jaad.mp4.api.Frame;

import net.sourceforge.jaad.aac.*;

p {

  File file = getProgramFile(#1006739, "Prince - Motherless Child - Live!-99Q31nyH16w.m4a");

  assertTrue("Please run #1006739", file.exists());

  fixContextClassLoader();

  MP4Container container = new MP4Container(new RandomAccessFile(file, "r"));

  Movie movie = container.getMovie();

  List<Track> tracks = movie.getTracks(AudioTrack.AudioCodec.AAC);

  if (tracks.size() > 0) {

    Track track = tracks.get(0);

    byte[] decoderSpecificInfo = track.getDecoderSpecificInfo();

    Decoder dec = new Decoder(decoderSpecificInfo);

    new SampleBuffer buf;

    Frame frame;

    while not null (frame = track.readNextFrame()) {

      dec.decodeFrame(frame.getData(), buf);

      byte[] audio = buf.getData();

      print("Got audio: " + l(audio) + " channels: " + buf.getChannels() + " bits/sample: " + buf.getBitsPerSample() + " " + (buf.isBigEndian() ? "big endian" : "little endian") + ", " + buf.getSampleRate() + " hz");

    }

  }

  print("Got " + n(tracks, "tracks"));

}