1 files changed, 98 insertions, 0 deletions
diff --git a/isoparser/src/main/java/com/googlecode/mp4parser/authoring/tracks/SilenceTrackImpl.java b/isoparser/src/main/java/com/googlecode/mp4parser/authoring/tracks/SilenceTrackImpl.java
new file mode 100644
index 0000000..f74ab3c
--- /dev/null
+++ b/isoparser/src/main/java/com/googlecode/mp4parser/authoring/tracks/SilenceTrackImpl.java
@@ -0,0 +1,98 @@
+package com.googlecode.mp4parser.authoring.tracks;
+
+import com.coremedia.iso.boxes.*;
+import com.googlecode.mp4parser.authoring.Mp4TrackImpl;
+import com.googlecode.mp4parser.authoring.Track;
+import com.googlecode.mp4parser.authoring.TrackMetaData;
+
+import java.nio.ByteBuffer;
+import java.util.Collections;
+import java.util.LinkedList;
+import java.util.List;
+
+/**
+ * This is just a basic idea how things could work but they don't.
+ */
+public class SilenceTrackImpl implements Track {
+    Track source;
+
+    List<ByteBuffer> samples = new LinkedList<ByteBuffer>();
+    TimeToSampleBox.Entry entry;
+
+    public SilenceTrackImpl(Track ofType, long ms) {
+        source = ofType;
+        if ("mp4a".equals(ofType.getSampleDescriptionBox().getSampleEntry().getType())) {
+            long numFrames = getTrackMetaData().getTimescale() * ms / 1000 / 1024;
+            long standZeit = getTrackMetaData().getTimescale() * ms / numFrames / 1000;
+            entry = new TimeToSampleBox.Entry(numFrames, standZeit);
+
+
+            while (numFrames-- > 0) {
+                samples.add((ByteBuffer) ByteBuffer.wrap(new byte[]{
+                        0x21, 0x10, 0x04, 0x60, (byte) 0x8c, 0x1c,
+                }).rewind());
+            }
+
+        } else {
+            throw new RuntimeException("Tracks of type " + ofType.getClass().getSimpleName() + " are not supported");
+        }
+    }
+
+    public SampleDescriptionBox getSampleDescriptionBox() {
+        return source.getSampleDescriptionBox();
+    }
+
+    public List<TimeToSampleBox.Entry> getDecodingTimeEntries() {
+        return Collections.singletonList(entry);
+
+    }
+
+    public TrackMetaData getTrackMetaData() {
+        return source.getTrackMetaData();
+    }
+
+    public String getHandler() {
+        return source.getHandler();
+    }
+
+    public boolean isEnabled() {
+        return source.isEnabled();
+    }
+
+    public boolean isInMovie() {
+        return source.isInMovie();
+    }
+
+    public boolean isInPreview() {
+        return source.isInPreview();
+    }
+
+    public boolean isInPoster() {
+        return source.isInPoster();
+    }
+
+    public List<ByteBuffer> getSamples() {
+        return samples;
+    }
+
+    public Box getMediaHeaderBox() {
+        return source.getMediaHeaderBox();
+    }
+
+    public SubSampleInformationBox getSubsampleInformationBox() {
+        return null;
+    }
+
+    public List<CompositionTimeToSample.Entry> getCompositionTimeEntries() {
+        return null;
+    }
+
+    public long[] getSyncSamples() {
+        return null;
+    }
+
+    public List<SampleDependencyTypeBox.Entry> getSampleDependencies() {
+        return null;
+    }
+
+}