/** * Create tag for metadata event. * * @return Metadata event tag */ private ITag createFileMeta() { // Create tag for onMetaData event ByteBuffer buf = ByteBuffer.allocate(1024); buf.setAutoExpand(true); Output out = new Output(buf); // Duration property out.writeString("onMetaData"); Map<Object, Object> props = new HashMap<Object, Object>(); props.put("duration", duration / 1000.0); if (firstVideoTag != -1) { long old = getCurrentPosition(); setCurrentPosition(firstVideoTag); readTagHeader(); fillBuffer(1); byte frametype = in.get(); // Video codec id props.put("videocodecid", frametype & MASK_VIDEO_CODEC); setCurrentPosition(old); } if (firstAudioTag != -1) { long old = getCurrentPosition(); setCurrentPosition(firstAudioTag); readTagHeader(); fillBuffer(1); byte frametype = in.get(); // Audio codec id props.put("audiocodecid", (frametype & MASK_SOUND_FORMAT) >> 4); setCurrentPosition(old); } props.put("canSeekToEnd", true); out.writeMap(props, new Serializer()); buf.flip(); ITag result = new Tag(IoConstants.TYPE_METADATA, 0, buf.limit(), null, 0); result.setBody(buf); return result; }