Examples of org.gstreamer.Pipeline$API

org.gstreamer.Pipeline
A {@code Pipeline} is a special {@link Bin} used as the toplevel container forthe filter graph. The Pipeline will manage the selection and distribution of a global {@link Clock} as well as provide a {@link Bus} tothe application. It will also implement a default behavour for managing seek events (see {@link #seek seek}).
Elements are added and removed from the pipeline using the {@code Bin}methods like {@link Bin#add add} and {@link Bin#remove remove}.
Before changing the state of the Pipeline (see {@link Element}) a {@link Bus} can be retrieved with {@link #getBus getBus}. This bus can then be used to receive {@link Message}s from the elements in the pipeline.
By default, a Pipeline will automatically flush the pending Bus messages when going to the NULL state to ensure that no circular references exist when no messages are read from the Bus. This behaviour can be changed with {@link #setAutoFlushBus setAutoFlushBus}
When the Pipeline performs the PAUSED to PLAYING state change it will select a clock for the elements. The clock selection algorithm will by default select a clock provided by an element that is most upstream (closest to the source). For live pipelines (ones that return {@link StateChangeReturn#NO_PREROLL} from the {@link Element#setState setState} call) this will select the clock provided by the live source. For normal pipelines this will select a clock provided by the sinks (most likely the audio sink). If no element provides a clock, a default SystemClock is used.
The clock selection can be controlled with the gst_pipeline_use_clock() method, which will enforce a given clock on the pipeline. With gst_pipeline_auto_clock() the default clock selection algorithm can be restored.
A Pipeline maintains a stream time for the elements. The stream time is defined as the difference between the current clock time and the base time. When the pipeline goes to READY or a flushing seek is performed on it, the stream time is reset to 0. When the pipeline is set from PLAYING to PAUSED, the current clock time is sampled and used to configure the base time for the elements when the pipeline is set to PLAYING again. This default behaviour can be changed with the gst_pipeline_set_new_stream_time() method. When sending a flushing seek event to a GstPipeline (see {@link #seek seek}), it will make sure that the pipeline is properly PAUSED and resumed as well as set the new stream time to 0 when the seek succeeded.

   * Example test method
   */


  @Test
  public void simple() {
    _stem_ impl = new _stem_Impl();
    
    impl.say("Hello World");
  }

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        // Quartz is abysmally slow at scaling video for some reason, so turn it off.
        System.setProperty("apple.awt.graphics.UseQuartz", "false");
        
        args = Gst.init("SwingVideoTest", args);
        
        pipe = new Pipeline("pipeline");
        final Element videosrc = ElementFactory.make("videotestsrc", "source");
        final Element videofilter = ElementFactory.make("capsfilter", "flt");
        videofilter.setCaps(Caps.fromString("video/x-raw-yuv, width=720, height=576"
                + ", bpp=32, depth=32, framerate=25/1"));
        SwingUtilities.invokeLater(new Runnable() {

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                    final VideoPlayer player = new VideoPlayer(uri);
                    player.setPreferredSize(new Dimension(200, 150));
                    player.setOpacity(0.4f);
                    player.setOpaque(false);
                    player.setControlsVisible(false);
                    Pipeline pipe = player.getMediaPlayer().getPipeline();
                    // Turn off sound - otherwise everything goes slow.
                    if (pipe instanceof PlayBin2) {
                        ((PlayBin2) pipe).setAudioSink(ElementFactory.make("fakesink", "audio"));
                    }
                    pip.add(player);

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        for (String s: args) {
            sb.append(" ");
            sb.append(s);
        }
        
        Pipeline pipe = Pipeline.launch(sb.substring(1));


        pipe.play();


        Gst.main();


        pipe.stop();
    }

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        }
        Element src = ElementFactory.make("filesrc", "Input File");
        src.set("location", args[0]);
        
        DecodeBin2 decodeBin = new DecodeBin2("Decode Bin");
        pipe = new Pipeline("main pipeline");
        Element decodeQueue = ElementFactory.make("queue", "Decode Queue");
        pipe.addMany(src, decodeQueue, decodeBin);
        Element.linkMany(src, decodeQueue, decodeBin);


        /* create audio output */

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    public DynamicPadTest() {
    }
    public static void main(String[] args) {
        args = Gst.init("Dynamic Pad Test", args);
        /* create elements */
        Pipeline pipeline = new Pipeline("my_pipeline");
        Element source = ElementFactory.make("filesrc", "source");
        source.set("location", args[0]);
        Element demux = ElementFactory.make("oggdemux", "demuxer");
        
        /* you would normally check that the elements were created properly */
        
        /* put together a pipeline */
        pipeline.addMany(source, demux);
        Element.linkPads(source, "src", demux, "sink");
        
        /* listen for newly created pads */
        demux.connect(new Element.PAD_ADDED() {
            public void padAdded(Element element, Pad pad) {
               System.out.println("New Pad " + pad.getName() + " was created");
            }
        });
        
        /* start the pipeline */
        pipeline.play();
        Gst.main();
    }

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        } else if (true) {
            src = ElementFactory.make("filesrc", "Input File");
            src.set("location", args[0]);
        }*/
        DecodeBin2 decodeBin = (DecodeBin2) ElementFactory.make("decodebin2", "Decode Bin");
        Pipeline pipe = new Pipeline("main pipeline");
        pipe.addMany(src, decodeBin);
        src.link(decodeBin);
        
        /* create audio output */
        final Bin audioBin = new Bin("Audio Bin");
        
        Element conv = ElementFactory.make("audioconvert", "Audio Convert");
        Element sink = ElementFactory.make("autoaudiosink", "sink");
        audioBin.addMany(conv, sink);
        Element.linkMany(conv, sink);        
        audioBin.addPad(new GhostPad("sink", conv.getStaticPad("sink")));
        
        pipe.add(audioBin);


        decodeBin.connect(new DecodeBin2.NEW_DECODED_PAD() {
            public void newDecodedPad(DecodeBin2 elem, Pad pad, boolean last) {
                  /* only link once */
                Pad audioPad = audioBin.getStaticPad("sink");
                if (pad.isLinked()) {
                    return;
                }
  
                /* check media type */
                Caps caps = pad.getCaps();
                Structure struct = caps.getStructure(0);
                if (struct.getName().startsWith("audio/")) {
                    System.out.println("Got audio pad");
                    /* link'n'play */
                    pad.link(audioPad);  
                }
                
            }
        });
        Bus bus = pipe.getBus();
        bus.connect(new Bus.TAG() {
            public void tagsFound(GstObject source, TagList tagList) {
                System.out.println("Got TAG event");
                for (String tag : tagList.getTagNames()) {
                    System.out.println("Tag " + tag + " = " + tagList.getValue(tag, 0));
                }
            }
        });
        bus.connect(new Bus.ERROR() {
            public void errorMessage(GstObject source, int code, String message) {
                System.out.println("Error: code=" + code + " message=" + message);
            }
        });
        bus.connect(new Bus.EOS() {


            public void endOfStream(GstObject source) {
                System.out.println("Got EOS!");
            }
            
        });
        pipe.play();
        Gst.main();
    }

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        }
        
        //
        // Construct a pipeline: filesrc ! OutputStreamSink
        //
        Pipeline inputPipe = new Pipeline("input pipeline");
        Element filesrc = ElementFactory.make("filesrc", "File source");
        filesrc.set("location", args[0]);
        Element outputstream = new WriteableByteChannelSink(pipeChannel.sink(), "output stream");
        inputPipe.addMany(filesrc, outputstream);
        Element.linkMany(filesrc, outputstream);
        inputPipe.play();
        //
        // Now construct the output pipeline to process the data
        //
        
        Element src = null;
        try {            
            src = new ReadableByteChannelSrc(pipeChannel.source(), "input file");
        } catch (Exception ex) {
            ex.printStackTrace();
            throw new RuntimeException(ex);
        }
        
        DecodeBin2 decodeBin = (DecodeBin2) ElementFactory.make("decodebin2", "Decode Bin");
        Pipeline pipe = new Pipeline("main pipeline");
        pipe.addMany(src, decodeBin);
        src.link(decodeBin);
        
        /* create audio output */
        final Bin audioBin = new Bin("Audio Bin");
        
        Element conv = ElementFactory.make("audioconvert", "Audio Convert");
        Element sink = ElementFactory.make("autoaudiosink", "sink");
        audioBin.addMany(conv, sink);
        Element.linkMany(conv, sink);        
        audioBin.addPad(new GhostPad("sink", conv.getStaticPad("sink")));
        
        pipe.add(audioBin);


        decodeBin.connect(new DecodeBin2.NEW_DECODED_PAD() {
            public void newDecodedPad(DecodeBin2 elem, Pad pad, boolean last) {
                System.out.println("newDecodedPad");
                  /* only link once */
                Pad audioPad = audioBin.getStaticPad("sink");
                if (pad.isLinked()) {
                    return;
                }
  
                /* check media type */
                Caps caps = pad.getCaps();
                Structure struct = caps.getStructure(0);
                if (struct.getName().startsWith("audio/")) {
                    System.out.println("Got audio pad");
                    /* link'n'play */
                    pad.link(audioPad);  
                }
                
            }
        });
        Bus bus = pipe.getBus();
        bus.connect(new Bus.TAG() {
            public void tagsFound(GstObject source, TagList tagList) {
                System.out.println("Got TAG event");                
                for (String tag : tagList.getTagNames()) {
                    System.out.println("Tag " + tag + " = " + tagList.getValue(tag, 0));
                }
            }
        });
        bus.connect(new Bus.ERROR() {
            public void errorMessage(GstObject source, int code, String message) {
                System.out.println("Error: code=" + code + " message=" + message);
            }
        });
        bus.connect(new Bus.EOS() {


            public void endOfStream(GstObject source) {
                System.out.println("Got EOS!");
            }
            
        });
        pipe.play();
        Gst.main();
    }

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public class ColorBalance {
  public static void main(String[] args) {
    args = Gst.init("ColorBalance video test", args);


    Pipeline pipe = new Pipeline("pipeline");
    final Element videosrc = ElementFactory.make("v4l2src", "source");
    videosrc.set("device", "/dev/video1");
    final Element videosink = ElementFactory.make("xvimagesink", "xv");


    pipe.addMany(videosrc, videosink);
    Element.linkMany(videosrc, videosink);


    pipe.play();


    try {
      Thread.sleep(1000);
    } catch (Exception e) {
    }

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    public static void main(String[] args) {


        args = Gst.init("AppSrcTest", args);
        final int width = 320, height = 200;
        /* setup pipeline */
        pipeline = new Pipeline("pipeline");
        final AppSrc appsrc = (AppSrc) ElementFactory.make("appsrc", "source");
        final Element srcfilter = ElementFactory.make("capsfilter", "srcfilter");
        Caps fltcaps = new Caps("video/x-raw-rgb, framerate=2/1"
                + ", width=" + width + ", height=" + height 
                + ", bpp=16, depth=16");

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Related Classes of org.gstreamer.Pipeline$API

_package_.provider._stem_ImplTest

org.gstreamer.example.AppSrcTest

org.gstreamer.example.AudioPanorama

org.gstreamer.example.ColorBalance

org.gstreamer.example.DecodeBinPlayer

org.gstreamer.example.DoubleQuit

org.gstreamer.example.DynamicPadTest

org.gstreamer.example.FakeSrcTest

org.gstreamer.example.InputStreamSrcTest

org.gstreamer.example.NavigationTest

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