org.red5.io.amf.Output Java Examples

public Notify getMetaDataEvent() {

		IoBuffer buf = IoBuffer.allocate(1024);
		buf.setAutoExpand(true);
		Output out = new Output(buf);
		out.writeString("onMetaData");

		Map<Object, Object> props = new HashMap<Object, Object>();
		props.put("width", 160);
		props.put("height", 120);
		props.put("framerate", 15);
		props.put("videocodecid", 7);
		props.put("canSeekToEnd", false);
		out.writeMap(props);
		buf.flip();

		return new Notify(buf);
	}
 

/**
 * Notifies handler on stream broadcast start
 */
private void notifyBroadcastStart() {
    IStreamAwareScopeHandler handler = getStreamAwareHandler();
    if (handler != null) {
        try {
            handler.streamBroadcastStart(this);
        } catch (Throwable t) {
            log.error("Error in notifyBroadcastStart", t);
        }
    }
    // send metadata for creation and start dates
    IoBuffer buf = IoBuffer.allocate(256);
    buf.setAutoExpand(true);
    Output out = new Output(buf);
    out.writeString("onMetaData");
    Map<Object, Object> params = new HashMap<>();
    Calendar cal = GregorianCalendar.getInstance();
    cal.setTimeInMillis(creationTime);
    params.put("creationdate", ZonedDateTime.ofInstant(cal.toInstant(), ZoneId.of("UTC")).format(DateTimeFormatter.ISO_INSTANT));
    cal.setTimeInMillis(startTime);
    params.put("startdate", ZonedDateTime.ofInstant(cal.toInstant(), ZoneId.of("UTC")).format(DateTimeFormatter.ISO_INSTANT));
    if (log.isDebugEnabled()) {
        log.debug("Params: {}", params);
    }
    out.writeMap(params);
    buf.flip();
    Notify notify = new Notify(buf);
    notify.setAction("onMetaData");
    notify.setHeader(new Header());
    notify.getHeader().setDataType(Notify.TYPE_STREAM_METADATA);
    notify.getHeader().setStreamId(0);
    notify.setTimestamp(0);
    dispatchEvent(notify);
}
 

/**
 * Sends an onPlayStatus message.
 * 
 * http://help.adobe.com/en_US/FlashPlatform/reference/actionscript/3/flash/events/NetDataEvent.html
 * 
 * @param code
 * @param duration
 * @param bytes
 */
private void sendOnPlayStatus(String code, int duration, long bytes) {
    if (log.isDebugEnabled()) {
        log.debug("Sending onPlayStatus - code: {} duration: {} bytes: {}", code, duration, bytes);
    }
    // create the buffer
    IoBuffer buf = IoBuffer.allocate(102);
    buf.setAutoExpand(true);
    Output out = new Output(buf);
    out.writeString("onPlayStatus");
    ObjectMap<Object, Object> args = new ObjectMap<>();
    args.put("code", code);
    args.put("level", Status.STATUS);
    args.put("duration", duration);
    args.put("bytes", bytes);
    String name = currentItem.get().getName();
    if (StatusCodes.NS_PLAY_TRANSITION_COMPLETE.equals(code)) {
        args.put("clientId", streamId);
        args.put("details", name);
        args.put("description", String.format("Transitioned to %s", name));
        args.put("isFastPlay", false);
    }
    out.writeObject(args);
    buf.flip();
    Notify event = new Notify(buf, "onPlayStatus");
    if (lastMessageTs > 0) {
        event.setTimestamp(lastMessageTs);
    } else {
        event.setTimestamp(0);
    }
    RTMPMessage msg = RTMPMessage.build(event);
    doPushMessage(msg);
}
 

/**
 * Create tag for metadata event.
 *
 * @return Metadata event tag
 */
ITag createFileMeta() {
    log.debug("Creating onMetaData");
    // Create tag for onMetaData event
    IoBuffer buf = IoBuffer.allocate(1024);
    buf.setAutoExpand(true);
    Output out = new Output(buf);
    out.writeString("onMetaData");
    Map<Object, Object> props = new HashMap<Object, Object>();
    // Duration property
    props.put("duration", ((double) duration / (double) timeScale));

    // Audio codec id - watch for mp3 instead of aac
    props.put("audiocodecid", audioCodecId);
    props.put("aacaot", audioCodecType);
    props.put("audiosamplerate", audioTimeScale);
    props.put("audiochannels", audioChannels);
    props.put("canSeekToEnd", false);
    out.writeMap(props);
    buf.flip();

    //now that all the meta properties are done, update the duration
    duration = Math.round(duration * 1000d);

    ITag result = new Tag(IoConstants.TYPE_METADATA, 0, buf.limit(), null, 0);
    result.setBody(buf);
    return result;
}
 

/**
 * Injects metadata (other than Cue points) into a tag
 * 
 * @param meta
 *            Metadata
 * @param tag
 *            Tag
 * @return New tag with injected metadata
 */
private static ITag injectMetaData(IMetaData<?, ?> meta, ITag tag) {
    IoBuffer bb = IoBuffer.allocate(1000);
    bb.setAutoExpand(true);
    Output out = new Output(bb);
    Serializer.serialize(out, "onMetaData");
    Serializer.serialize(out, meta);
    IoBuffer tmpBody = out.buf().flip();
    int tmpBodySize = out.buf().limit();
    int tmpPreviousTagSize = tag.getPreviousTagSize();
    return new Tag(IoConstants.TYPE_METADATA, 0, tmpBodySize, tmpBody, tmpPreviousTagSize);
}
 

/**
 * Injects metadata (Cue Points) into a tag
 * 
 * @param meta
 *            Metadata (cue points)
 * @param tag
 *            Tag
 * @return ITag tag New tag with injected metadata
 */
private static ITag injectMetaCue(IMetaCue meta, ITag tag) {
    // IMeta meta = (MetaCue) cue;
    Output out = new Output(IoBuffer.allocate(1000));
    Serializer.serialize(out, "onCuePoint");
    Serializer.serialize(out, meta);

    IoBuffer tmpBody = out.buf().flip();
    int tmpBodySize = out.buf().limit();
    int tmpPreviousTagSize = tag.getPreviousTagSize();
    int tmpTimestamp = getTimeInMilliseconds(meta);

    return new Tag(IoConstants.TYPE_METADATA, tmpTimestamp, tmpBodySize, tmpBody, tmpPreviousTagSize);
}
 

/**
 * {@inheritDoc}
 */
@Override
public void writeMetaData(IMetaData<?, ?> metaData) {
    IMetaCue meta = (MetaCue<?, ?>) metaData;
    Output out = new Output(IoBuffer.allocate(1000));
    Serializer.serialize(out, "onCuePoint");
    Serializer.serialize(out, meta);
}
 

/** {@inheritDoc} */
@Override
void setupIO() {
    buf = IoBuffer.allocate(0); // 1kb
    buf.setAutoExpand(true);
    in = new Input(buf);
    out = new Output(buf);
}
 

/**
 * Creates file metadata object
 * 
 * @return Tag
 */
private ITag createFileMeta() {
    log.debug("createFileMeta");
    // create tag for onMetaData event
    IoBuffer in = IoBuffer.allocate(1024);
    in.setAutoExpand(true);
    Output out = new Output(in);
    out.writeString("onMetaData");
    Map<Object, Object> props = new HashMap<Object, Object>();
    props.put("audiocodecid", IoConstants.FLAG_FORMAT_MP3);
    props.put("canSeekToEnd", true);
    // set id3 meta data if it exists
    if (metaData != null) {
        if (metaData.artist != null) {
            props.put("artist", metaData.artist);
        }
        if (metaData.album != null) {
            props.put("album", metaData.album);
        }
        if (metaData.songName != null) {
            props.put("songName", metaData.songName);
        }
        if (metaData.genre != null) {
            props.put("genre", metaData.genre);
        }
        if (metaData.year != null) {
            props.put("year", metaData.year);
        }
        if (metaData.track != null) {
            props.put("track", metaData.track);
        }
        if (metaData.comment != null) {
            props.put("comment", metaData.comment);
        }
        if (metaData.duration != null) {
            props.put("duration", metaData.duration);
        }
        if (metaData.channels != null) {
            props.put("channels", metaData.channels);
        }
        if (metaData.sampleRate != null) {
            props.put("samplerate", metaData.sampleRate);
        }
        if (metaData.hasCoverImage()) {
            Map<Object, Object> covr = new HashMap<>(1);
            covr.put("covr", new Object[] { metaData.getCovr() });
            props.put("tags", covr);
        }
        //clear meta for gc
        metaData = null;
    }
    log.debug("Metadata properties map: {}", props);
    // check for duration
    if (!props.containsKey("duration")) {
        // generate it from framemeta
        if (frameMeta != null) {
            props.put("duration", frameMeta.timestamps[frameMeta.timestamps.length - 1] / 1000.0);
        } else {
            log.debug("Frame meta was null");
        }
    }
    // set datarate
    if (dataRate > 0) {
        props.put("audiodatarate", dataRate);
    }
    out.writeMap(props);
    in.flip();
    // meta-data
    ITag result = new Tag(IoConstants.TYPE_METADATA, 0, in.limit(), null, prevSize);
    result.setBody(in);
    return result;
}
 

/**
 * Serializes status object
 * 
 * @param out
 *            Byte buffer for output object
 * @param statusObject
 *            Status object to serialize
 */
public void serializeStatusObject(IoBuffer out, StatusObject statusObject) {
    Map<?, ?> statusMap = new BeanMap(statusObject);
    Output output = new Output(out);
    Serializer.serialize(output, statusMap);
}