Examples of MediaWriter

com.xuggle.mediatool.MediaWriter
An {@link IMediaCoder} that encodes and decodes media to containers.
The MediaWriter class is a simplified interface to the Xuggler library that opens up a media container, and allows media data to be written into it.

The {@link MediaWriter} class implements {@link IMediaListener}, and so it can be attached to any {@link IMediaGenerator} that generates rawmedia events (e.g. {@link MediaReader}).

Calls to {@link #onAudioSamples}, and {@link #onVideoPicture} encodemedia into packets and write those encoded packets.

If you are generating video from Java {@link BufferedImage} but youdon't have an {@link IVideoPicture} object handy, don't sweat. Youcan use {@link #pushImage(BufferedImage,int,long)}, and {@link MediaWriter}will convert your {@link BufferedImage} into the right type.

Examples of com.xuggle.mediatool.MediaWriter

  }
  
  @Test
  public void testTimebaseGuessingWhenCodecSpecifiedAllowed()
  {
    IMediaWriter writer = new MediaWriter(PREFIX+
        "testTimebaseGuessingWhenCodecSpecifiedAllowed1.mpg");
    try {
      writer.addVideoStream(0,
          0,
          IRational.make(27,1),
          100, 100);
      fail("shouldn't get here");
    } catch (UnsupportedOperationException e) {}
    writer = new MediaWriter(PREFIX+
      "testTimebaseGuessingWhenCodecSpecifiedAllowed2.mpg");
    writer.addVideoStream(0,
        0,
        100, 100);
    IStreamCoder coder = writer.getContainer().getStream(0).getStreamCoder();
    // should have set the highest possible
    assertEquals(1, coder.getTimeBase().getNumerator());
    assertEquals(60, coder.getTimeBase().getDenominator());
  }

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Examples of com.xuggle.mediatool.MediaWriter

  {
    JNIMemoryManager.setMemoryModel(model);
    for(int i = 0; i < numIterations; i++)
    {
      MediaReader reader = new MediaReader(url);
      MediaWriter writer = null;
      assertNotNull(reader);
      if (doWrite) {
        String outURL =
          MediaToolExhaustiveTest.class.getName()+"_"+
          model + "_" +
          i + ".mov";
        // adds itself to the reader
        writer = new MediaWriter(outURL, reader);
        reader.addListener(writer);
      }
      if (doViewer)
      {
        MediaViewer viewer = new MediaViewer(viewerMode,

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Examples of com.xuggle.mediatool.MediaWriter

  {
    File file = new File(PREFIX + "should-not-be-created.flv");
    file.delete();
    assert(!file.exists());
    mReader.setAddDynamicStreams(true);
    mReader.addListener(new MediaWriter(file.toString(), mReader));
    assert(!file.exists());
  }

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Examples of com.xuggle.mediatool.MediaWriter

    public void improperUrlTest()
  {
    File file = new File("/tmp/foo/bar/baz/should-not-be-created.flv");
    file.delete();
    assert(!file.exists());
    mReader.addListener(new MediaWriter(file.toString(), mReader));
    
    mReader.readPacket();
    assert(!file.exists());
  }

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Examples of com.xuggle.mediatool.MediaWriter


  @Test(expected=IllegalArgumentException.class)
    public void improperInputContainerTypeTest()
  {
    File file = new File(PREFIX + "should-not-be-created.flv");
    MediaWriter writer = new MediaWriter(file.toString(), mReader);
    mReader.addListener(writer);
    mReader.readPacket();
    file.delete();
    new MediaWriter(file.toString(), writer.getContainer());
  }

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Examples of com.xuggle.mediatool.MediaWriter

        IVideoResampler.Feature.FEATURE_COLORSPACECONVERSION))
      return;
    File file = new File(PREFIX + "transcode-to-flv.flv");
    file.delete();
    assert(!file.exists());
    MediaWriter writer = new MediaWriter(file.toString(), mReader);
    writer.addListener(new MediaViewer(mViewerMode, true));
    mReader.addListener(writer);
    while (mReader.readPacket() == null)
      ;
    assert(file.exists());
    assertEquals(1062946, file.length(), 300);

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Examples of com.xuggle.mediatool.MediaWriter

        IVideoResampler.Feature.FEATURE_COLORSPACECONVERSION))
      return;
    File file = new File(PREFIX + "transcode-to-mov.mov");
    file.delete();
    assert(!file.exists());
    MediaWriter writer = new MediaWriter(file.toString(), mReader);
    writer.addListener(new MediaViewer(mViewerMode, true));
    mReader.addListener(writer);
    while (mReader.readPacket() == null)
      ;
    assert(file.exists());
    // allow 100k difference for debug builds

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Examples of com.xuggle.mediatool.MediaWriter

        IVideoResampler.Feature.FEATURE_COLORSPACECONVERSION))
      return;
    File file = new File(PREFIX + "transcode-container.mov");
    file.delete();
    assert(!file.exists());
    MediaWriter writer = new MediaWriter(file.toString(), 
      mReader.getContainer());
    writer.addListener(new MediaViewer(mViewerMode, true));
    mReader.addListener(writer);
    while (mReader.readPacket() == null)
      ;
    assert(file.exists());
    // allow 100k difference for debug builds

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Examples of com.xuggle.mediatool.MediaWriter

    int w = 200;
    int h = 200;


    // create the writer
    
    MediaWriter writer = new MediaWriter(file.toString());
    writer.addListener(new MediaViewer(mViewerMode, true));


    // add the video stream


    ICodec codec = ICodec.findEncodingCodec(ICodec.ID.CODEC_ID_FLV1);
    writer.addVideoStream(videoStreamIndex, videoStreamId, codec, w, h);


    // create a place for video pictures


    IVideoPicture picture = IVideoPicture.make(IPixelFormat.Type.YUV420P, w, h);


    // make some pictures


    double deltaTheta = (Math.PI * 2) / 200;
    for (double theta = 0; theta < Math.PI * 2; theta += deltaTheta)
    {
      BufferedImage image = new BufferedImage(w, h, 
        BufferedImage.TYPE_3BYTE_BGR);
      
      Graphics2D g = image.createGraphics();
      g.setRenderingHint(
        RenderingHints.KEY_ANTIALIASING,
        RenderingHints.VALUE_ANTIALIAS_ON);
      
      g.setColor(Color.RED);
      g.rotate(theta, w / 2, h / 2);
      
      g.fillRect(50, 50, 100, 100);


      picture.setPts(time);
      writer.encodeVideo(videoStreamIndex, image,
          time, Global.DEFAULT_TIME_UNIT);
      
      time += deltaTime;
    }


    // close the writer


    writer.close();


    assert(file.exists());
    assertEquals(file.length(), 291186, 60000);
    log.debug("manually check: " + file);
  }

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Examples of com.xuggle.mediatool.MediaWriter

    int sampleRate = 44100;
    int totalSeconds = 5;


    // create the writer
    
    IMediaWriter writer = new MediaWriter(file.toString());


    // add the audio stream


    ICodec codec = ICodec.findEncodingCodec(ICodec.ID.CODEC_ID_MP3);
    IContainer container = writer.getContainer();
    IStream stream = container.getStream(
        writer.addAudioStream(audioStreamIndex, audioStreamId,
            codec, channelCount, sampleRate));
    int sampleCount = stream.getStreamCoder().getDefaultAudioFrameSize();


    // create a place for audio samples


    IAudioSamples samples = IAudioSamples.make(sampleCount, channelCount);


    // create the tone generator


    TestAudioSamplesGenerator generator = new TestAudioSamplesGenerator();
    generator.prepare(channelCount, sampleRate);


    // let's make some noise!


    int totalSamples = 0;
    while (totalSamples < sampleRate * totalSeconds)
    {
      generator.fillNextSamples(samples, sampleCount);
      writer.encodeAudio(audioStreamIndex, samples);
      totalSamples += samples.getNumSamples();
    }


    // close the writer


    writer.close();


    assert(file.exists());
    assertEquals(file.length(), 40365, 100);
    log.debug("manually check: " + file);
  }

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