multiverse.server.plugins
Class VoicePlugin

java.lang.Object
  multiverse.server.engine.EnginePlugin
      multiverse.server.plugins.VoicePlugin

All Implemented Interfaces:

MessageCallback, StatusMapCallback, multiverse.server.network.ClientConnection.AcceptCallback, multiverse.server.network.ClientConnection.MessageCallback, ObjectTracker.NotifyReactionRadiusCallback, ObjectTracker.RemoteObjectFilter, VoiceSender

public class VoicePlugin
extends EnginePlugin
implements VoiceSender, multiverse.server.network.ClientConnection.AcceptCallback, multiverse.server.network.ClientConnection.MessageCallback, ObjectTracker.NotifyReactionRadiusCallback, ObjectTracker.RemoteObjectFilter

Plugin to handle voice channels

Nested Class Summary

static class

VoicePlugin.VoiceConManager A class with locking to manage the Maps and Sets of connections.

Nested classes/interfaces inherited from class multiverse.server.engine.EnginePlugin

EnginePlugin.DeleteHook, EnginePlugin.DeleteSubObjHook, EnginePlugin.GenerateSubObjectHook, EnginePlugin.GetPropertyMessage, EnginePlugin.LoadHook, EnginePlugin.LoadSubObjHook, EnginePlugin.PluginActivateHook, EnginePlugin.PluginStateMessage, EnginePlugin.SaveHook, EnginePlugin.SaveSubObjHook, EnginePlugin.SetPropertyMessage, EnginePlugin.SubObjData, EnginePlugin.TransferFilter, EnginePlugin.TransferObjectMessage, EnginePlugin.UnloadHook, EnginePlugin.UnloadSubObjHook

Field Summary

protected static boolean	allowVoiceBots If this is true, we subscribe to login messages and pass on login notifications.
static CountLogger.Counter	countAllocateVoiceReceived
static CountLogger.Counter	countAllocateVoiceSent
static CountLogger.Counter	countDeallocateVoiceReceived
static CountLogger.Counter	countDeallocateVoiceSent
static CountLogger.Counter	countSendLoginStatus
protected static boolean	createGroupWhenReferenced If this is true, we'll synthesize the group and/or group member when an auth packet comes in.
static TimeHistogram	dataSendHistogram
static int	lengthBytes There are two bytes in the length prefixed to a TCP message
protected java.util.concurrent.locks.Lock	lock
static int	maxVoiceChannels The server is supposed to run things so no client ever has more than this number of voice channels.
static byte	opcodeAggregatedData An aggregated data packet contains a number of data packets.
static byte	opcodeAllocateCodec Allocate a voice.
static byte	opcodeAllocatePositionalCodec This has exactly the same payload as AllocateCodec, but says that the voice should be positional.
static byte	opcodeAuthenticate The authenticate packet must be the first one received by the voice plugin on any new connection from a client.
static byte	opcodeData A data packet, consisting of a 4-byte header followed by the bytes of the data frame.
static byte	opcodeDeallocate Deallocate the voice number.
static int	opcodeHighest
static byte	opcodeLoginStatus An opcode sent exclusively from the server to the client, and used only to support synchronization between voice bots and test clients.
static java.lang.String[]	opcodeNames Used in logging messages
static byte	opcodeReconfirmCodec This has exactly the same payload as AllocateCodec, but is with lossy transports like UDP to send the opcode parameters every second or so.
static byte	opcodeVoiceUnallocated All voices start out unallocated
protected PerceptionFilter	perceptionFilter
protected long	perceptionSubId
static TimeHistogram	processPacketHistogram
static boolean	runHistograms
static int[]	speexNarrowBandFrameSize This array is indexed by Speex narrow-band mode, and gives the narrow-band frame size for that mode.
static int[]	speexWideBandFrameSize
static TimeHistogram	voiceAllocHistogram
static TimeHistogram	voiceDeallocHistogram
static int[]	voiceMsgSize This gives the number of bytes in the message excluding the length, except for the data case, where it gives the number of bytes in the header, but not including the data itself
static byte	voicePacketHeaderSize All voice packets start with 4 bytes: o 16-bit sequence number, increased by one for each successive transmission for this voice.

Fields inherited from class multiverse.server.engine.EnginePlugin

deleteSubObjectSubscription, dumpAllThreadSubscription, dumpAllThreadSubscriptionLock, loadSubObjectSubscription, MSG_TYPE_DUMP_ALL_THREAD_STACKS, MSG_TYPE_GET_PROPERTY, MSG_TYPE_PLUGIN_STATE, MSG_TYPE_SET_PROPERTY, MSG_TYPE_SET_PROPERTY_NONBLOCK, MSG_TYPE_TRANSFER_OBJECT, pluginStateSubscription, propertySubscription, saveSubObjectSubscription, selectionFilter, selectionSubscription, setSubObjectPersistenceSubscription, subObjectSubscription, unloadSubObjectSubscription

Fields inherited from interface multiverse.msgsys.MessageCallback

NO_FLAGS, RESPONSE_EXPECTED

Constructor Summary

VoicePlugin()
The VoicePlugin accepts connections from game clients who have been supplied the IP and port number to contact by the initial game system login.

Method Summary

void	acceptConnection(multiverse.server.network.ClientConnection con)
void	addGroup(long groupOid, VoiceGroup group) Inform the VoicePlugin about the existance of a voice group.
protected void	addPerceiverToTracker(long playerOid, VoiceStub stub)
protected void	addToPerceptionFilter(long playerOid)
void	connectionReset(multiverse.server.network.ClientConnection con) Close record stream if it's open, deallocate all voices in use by the connection, and remove the listeners ??? TBD: Need to remove connection from a whole bunch of data structures.
protected VoiceStub	createVoiceStub(long playerOid)
static int	encodedFrameSizeForMode(int mode, boolean wideBand) Return the total frame size for narrow or wide-band mode given
static int	encodedFrameSizeFromFirstByte(byte b) Return the frame size for the band/mode specified by the first byte of the Speex frame
protected void	expungeVoiceClient(long playerOid)
protected void	expungeVoiceClient(long playerOid, VoiceConnection con)
protected VoiceGroup	findVoiceGroup(long groupOid) Return the group for groupOid, having checked to see that the group exists and contains the player.
java.lang.String	formatCon(multiverse.server.network.ClientConnection con)
VoiceConnection	getConnectionData(multiverse.server.network.ClientConnection con)
Point	getCurrentLoc(long memberOid) Get the current location of the member.
static VoicePlugin	getInstance()
protected GroupMember	getPlayerMember(long playerOid)
ProximityTracker	getTracker(long instanceOid, boolean mustAlreadyExist)
ProximityTracker	getTrackerOrNull(long instanceOid)
static short	incSeqNum(short original) Increment the short seqNum so that it wraps around properly.
static short	incSeqNum(short original, int byWhat) Increment the short seqNum so that it wraps around properly.
protected void	maybeRemoveFromTracker(long playerOid, long instanceOid)
void	notifyReactionRadius(long listenerOid, long speakerOid, boolean inRadius, boolean wasInRadius) This callback is invoked by the ProximityTracker to tell us who is in audible range of whom.
boolean	objectShouldBeTracked(long objectOid, PerceptionMessage.ObjectNote note) This callback is invoked by the ProximityTracker to determine if a candidate remote object should be tracked.
void	onActivate() for developers extending the EnginePlugin object, it may be easier to use the onActivate() method which gets called when the plugin is being activated by the Engine.
static java.lang.String	opcodeString(byte opcode) Return a string representation of the opcode number
protected java.io.BufferedOutputStream	openSpeexVoiceFile(long oid)
void	processAuthenticationPacket(VoiceConnection playerCon, multiverse.server.network.MVByteBuffer buf) Check to see of the auth packet contains the proper credentials, and if so, create a group member in the specified group.
void	processPacket(multiverse.server.network.ClientConnection con, multiverse.server.network.MVByteBuffer buf) The buf limit is the size.
protected void	removeFromPerceptionFilter(long playerOid)
void	removeGroup(long groupOid) Remove a group.
void	removePlayerFromGroup(VoiceConnection playerCon) Remove the player identified by the argument from the group it belongs to.
void	removeTracker(long instanceOid)
void	sendAllocateVoice(VoiceConnection speaker, VoiceConnection listener, byte voiceNumber, boolean positional) Send a message which tells the client that the server has established a voice channel to the client, identified by the given voiceNumber, using an overloading of sendAllocateVoice in which whether the voice channel will be treated positionally is determined by the boolean positional arg.
void	sendAllocateVoice(VoiceConnection speaker, VoiceConnection listener, byte voiceNumber, byte opcode) Send a message which tells the client that the server has established a voice channel to the client, identified by the given voiceNumber, using an overloading of sendAllocateVoice in which the positional boolean is replaced by the appropriate voice allocate opcode.
void	sendDeallocateVoice(VoiceConnection speaker, VoiceConnection listener, byte voiceNumber) Send a message to the connection deallocating the voice with the given number.
void	sendExtensionMessage(WorldManagerClient.ExtensionMessage msg) Send a broadcast ExtensionMessage to anyone who cares.
void	sendLoginStatus(VoiceConnection receiver, long playerOid, boolean login)
protected void	sendLoginStatusToReceivers(long playerOid, boolean login)
void	sendVoiceFrame(VoiceConnection speaker, VoiceConnection listener, byte opcode, byte voiceNumber, multiverse.server.network.MVByteBuffer sourceBuf, short pktLength) Send a voice data message to the client on the voice channel identitified by the voiceNumber.
protected void	writeSpeexData(java.io.BufferedOutputStream recordSpeexStream, byte[] buf, int startIndex, int byteCount) Write a single Speex frame to the stream, from the byte array

Methods inherited from class multiverse.server.engine.EnginePlugin

activate, createMBeanInstance, createSubscription, getHookManager, getMessageHandler, getName, getObjectLockManager, getObjectProperties, getObjectProperties, getObjectProperty, getPercentCPULoad, getPluginInfo, getPluginNamespaces, getPluginState, getPluginStatus, getPluginType, getPropertyImpl, getStatusMap, handleMessage, handleMessageImpl, logDepsOutstanding, processKeysAndValues, registerActivateHook, registerDeleteHook, registerLoadHook, registerPluginNamespace, registerPluginNamespaces, registerPluginNamespaces, registerPluginNamespaces, registerSaveHook, registerTransferHook, registerUnloadHook, sendSubObjectResponse, sendSubObjectResponse, sendSubObjectResponse, setMessageHandler, setName, setObjectProperties, setObjectProperties, setObjectPropertiesNoResponse, setObjectPropertiesNoResponse, setObjectProperty, setObjectPropertyNoResponse, setPercentCPULoad, setPluginInfo, setPluginType, setPropertyImpl, transferObject

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

voicePacketHeaderSize

public static final byte voicePacketHeaderSize

All voice packets start with 4 bytes: o 16-bit sequence number, increased by one for each successive transmission for this voice. o 8-bit opcode byte o 8-bit voice number

See Also:

Constant Field Values

opcodeVoiceUnallocated

public static final byte opcodeVoiceUnallocated

All voices start out unallocated

See Also:

Constant Field Values

opcodeAuthenticate

public static final byte opcodeAuthenticate

The authenticate packet must be the first one received by the voice plugin on any new connection from a client. The voice plugin maintains a map of the IP/port number to the oid of the client, used to validate traffic. The packet contains the string authentication token, the oid of the player; the oid of the group the player is signing up to; and a bool saying whether voice packets from this connection should be sent back to this connection. Total size is 2 + 1 + 1 + 8 + 8 + 1 + 4 = 25 bytes plus number of bytes in the authToken string.

See Also:

Constant Field Values

opcodeAllocateCodec

public static final byte opcodeAllocateCodec

Allocate a voice. Apart from the header, the payload is the 8-byte OID of the object emitting the sound. Size is 12 bytes.

See Also:

Constant Field Values

opcodeAllocatePositionalCodec

public static final byte opcodeAllocatePositionalCodec

This has exactly the same payload as AllocateCodec, but says that the voice should be positional.

See Also:

Constant Field Values

opcodeReconfirmCodec

public static final byte opcodeReconfirmCodec

This has exactly the same payload as AllocateCodec, but is with lossy transports like UDP to send the opcode parameters every second or so. Size is 12 bytes.

See Also:

Constant Field Values

opcodeDeallocate

public static final byte opcodeDeallocate

Deallocate the voice number. A voice number must be deallocated before it can be reused. There is no additional data. This is used both when a client signs off, and when the microphone goes quiet. A total of 4 bytes.

See Also:

Constant Field Values

opcodeData

public static final byte opcodeData

A data packet, consisting of a 4-byte header followed by the bytes of the data frame. All data messages _from_ the client supply the microphone number as the voice number. Since for the time being we support exactly one microphone, the voice numbers in messages from the client are always zero. Size is 4 bytes plus the codec frame playload, typically 28 bytes for 11000bps.

See Also:

Constant Field Values

opcodeAggregatedData

public static final byte opcodeAggregatedData

An aggregated data packet contains a number of data packets. It starts with a standard header, and has an additional byte arg which is the number of data packets contained therein. The first contained data frame has a seqnum equal to the seqnum of the ggregated data packet, and are numbered sequentially thereafter. So the seqnum of the next packet after an aggregated data packet is larger by the number of data frames in the packet. Each data packet inside an aggregated data packet starts with a 1-byte length.

See Also:

Constant Field Values

opcodeLoginStatus

public static final byte opcodeLoginStatus

An opcode sent exclusively from the server to the client, and used only to support synchronization between voice bots and test clients. It contains the standard header plus the oid of the player whose login status has changed. The voiceNumber is 1 if it's a login, and 0 if it's a logout.

See Also:

Constant Field Values

opcodeHighest

public static final int opcodeHighest

See Also:

Constant Field Values

opcodeNames

public static java.lang.String[] opcodeNames

Used in logging messages

voiceMsgSize

public static int[] voiceMsgSize

This gives the number of bytes in the message excluding the length, except for the data case, where it gives the number of bytes in the header, but not including the data itself

lengthBytes

public static int lengthBytes

There are two bytes in the length prefixed to a TCP message

speexNarrowBandFrameSize

public static int[] speexNarrowBandFrameSize

This array is indexed by Speex narrow-band mode, and gives the narrow-band frame size for that mode.

speexWideBandFrameSize

public static int[] speexWideBandFrameSize

maxVoiceChannels

public static int maxVoiceChannels

The server is supposed to run things so no client ever has more than this number of voice channels.

countSendLoginStatus

public static CountLogger.Counter countSendLoginStatus

countAllocateVoiceReceived

public static CountLogger.Counter countAllocateVoiceReceived

countDeallocateVoiceReceived

public static CountLogger.Counter countDeallocateVoiceReceived

countAllocateVoiceSent

public static CountLogger.Counter countAllocateVoiceSent

countDeallocateVoiceSent

public static CountLogger.Counter countDeallocateVoiceSent

runHistograms

public static boolean runHistograms

processPacketHistogram

public static TimeHistogram processPacketHistogram

dataSendHistogram

public static TimeHistogram dataSendHistogram

voiceAllocHistogram

public static TimeHistogram voiceAllocHistogram

voiceDeallocHistogram

public static TimeHistogram voiceDeallocHistogram

createGroupWhenReferenced

protected static boolean createGroupWhenReferenced

If this is true, we'll synthesize the group and/or group member when an auth packet comes in. Used only for testing.

allowVoiceBots

protected static boolean allowVoiceBots

If this is true, we subscribe to login messages and pass on login notifications.

perceptionFilter

protected PerceptionFilter perceptionFilter

perceptionSubId

protected long perceptionSubId

lock

protected transient java.util.concurrent.locks.Lock lock

Constructor Detail

VoicePlugin

public VoicePlugin()

The VoicePlugin accepts connections from game clients who have been supplied the IP and port number to contact by the initial game system login. The client initiates the connection, and must immediately thereafter send it's codec parameters. At that point, the client can send voice frames from the microphone, and the voice plugin forwards those frames to listeners. The process by which a set of listeners to any voice is established is game-dependent. But the sequence of events is fixed: - The listener allocates a "voice channel" to receive frames - The listener initializes the codec parameters for the new voice channel to be those associated with the channel. - As frames are received from clients, they are forwarded to listeners. At any point, for each client, there is a (possibly null) set of listeners; this is maintained in the voice group to which the player belongs.

Method Detail

getInstance

public static VoicePlugin getInstance()

onActivate

public void onActivate()

Description copied from class: EnginePlugin

for developers extending the EnginePlugin object, it may be easier to use the onActivate() method which gets called when the plugin is being activated by the Engine. this is an alternative to calling registerActivateHook()

Overrides:

onActivate in class EnginePlugin

acceptConnection

public void acceptConnection(multiverse.server.network.ClientConnection con)

Specified by:

acceptConnection in interface multiverse.server.network.ClientConnection.AcceptCallback

createVoiceStub

protected VoiceStub createVoiceStub(long playerOid)

maybeRemoveFromTracker

protected void maybeRemoveFromTracker(long playerOid,
                                      long instanceOid)

sendLoginStatusToReceivers

protected void sendLoginStatusToReceivers(long playerOid,
                                          boolean login)

getCurrentLoc

public Point getCurrentLoc(long memberOid)

Get the current location of the member. Used only for positional groups.

Returns:

The member's current location.

addPerceiverToTracker

protected void addPerceiverToTracker(long playerOid,
                                     VoiceStub stub)

getPlayerMember

protected GroupMember getPlayerMember(long playerOid)

notifyReactionRadius

public void notifyReactionRadius(long listenerOid,
                                 long speakerOid,
                                 boolean inRadius,
                                 boolean wasInRadius)

This callback is invoked by the ProximityTracker to tell us who is in audible range of whom. If the target oid, which is the listener, is in a positional group, we use it to maintain the set of eligible speakers and listeners for the positional group.

Specified by:

notifyReactionRadius in interface ObjectTracker.NotifyReactionRadiusCallback

objectShouldBeTracked

public boolean objectShouldBeTracked(long objectOid,
                                     PerceptionMessage.ObjectNote note)

This callback is invoked by the ProximityTracker to determine if a candidate remote object should be tracked.

Specified by:

objectShouldBeTracked in interface ObjectTracker.RemoteObjectFilter

getTracker

public ProximityTracker getTracker(long instanceOid,
                                   boolean mustAlreadyExist)

getTrackerOrNull

public ProximityTracker getTrackerOrNull(long instanceOid)

removeTracker

public void removeTracker(long instanceOid)

processPacket

public void processPacket(multiverse.server.network.ClientConnection con,
                          multiverse.server.network.MVByteBuffer buf)

The buf limit is the size.

Specified by:

processPacket in interface multiverse.server.network.ClientConnection.MessageCallback

writeSpeexData

protected void writeSpeexData(java.io.BufferedOutputStream recordSpeexStream,
                              byte[] buf,
                              int startIndex,
                              int byteCount)

Write a single Speex frame to the stream, from the byte array

processAuthenticationPacket

public void processAuthenticationPacket(VoiceConnection playerCon,
                                        multiverse.server.network.MVByteBuffer buf)

Check to see of the auth packet contains the proper credentials, and if so, create a group member in the specified group.

addToPerceptionFilter

protected void addToPerceptionFilter(long playerOid)

removeFromPerceptionFilter

protected void removeFromPerceptionFilter(long playerOid)

removePlayerFromGroup

public void removePlayerFromGroup(VoiceConnection playerCon)

Remove the player identified by the argument from the group it belongs to.

Parameters:

playerCon - The VoiceConnection object corresponding to the player.

findVoiceGroup

protected VoiceGroup findVoiceGroup(long groupOid)

Return the group for groupOid, having checked to see that the group exists and contains the player.

addGroup

public void addGroup(long groupOid,
                     VoiceGroup group)

Inform the VoicePlugin about the existance of a voice group.

Parameters:

groupOid - The oid of the voice group to be added.

group - The voice group to be added.

removeGroup

public void removeGroup(long groupOid)

Remove a group.

Parameters:

groupOid - The oid of the voice group to be removed.

sendAllocateVoice

public void sendAllocateVoice(VoiceConnection speaker,
                              VoiceConnection listener,
                              byte voiceNumber,
                              boolean positional)

Description copied from interface: VoiceSender

Send a message which tells the client that the server has established a voice channel to the client, identified by the given voiceNumber, using an overloading of sendAllocateVoice in which whether the voice channel will be treated positionally is determined by the boolean positional arg.

Specified by:

sendAllocateVoice in interface VoiceSender

Parameters:

speaker - The VoiceConnection object that represents the speaker that will be the source of voice data for the new voice channel.

listener - The VoiceConnection object representing the listener player, whose client will be sent an allocate message followed by voice data messages.

voiceNumber - The number, from 0 - maxVoiceChannels, of the voice channel to be established.

positional - True if the voice should behave as a positional voice.

sendAllocateVoice

public void sendAllocateVoice(VoiceConnection speaker,
                              VoiceConnection listener,
                              byte voiceNumber,
                              byte opcode)

Description copied from interface: VoiceSender

Send a message which tells the client that the server has established a voice channel to the client, identified by the given voiceNumber, using an overloading of sendAllocateVoice in which the positional boolean is replaced by the appropriate voice allocate opcode.

Specified by:

sendAllocateVoice in interface VoiceSender

Parameters:

speaker - The VoiceConnection object that represents the speaker that will be the source of voice data for the new voice channel.

listener - The VoiceConnection object representing the listener player, whose client will be sent an allocate message followed by voice data messages.

voiceNumber - The number, from 0 - maxVoiceChannels, of the voice channel to be established.

opcode - Either VoicePlugin.opcodeAllocatePositional or VoicePlugin.opcodeAllocateNonpositional.

sendDeallocateVoice

public void sendDeallocateVoice(VoiceConnection speaker,
                                VoiceConnection listener,
                                byte voiceNumber)

Send a message to the connection deallocating the voice with the given number.

Specified by:

sendDeallocateVoice in interface VoiceSender

Parameters:

speaker - The VoiceConnection object that represents the speaker that was the source of voice data for the voice channel.

listener - The VoiceConnection object representing the listener player, whose client will be sent the deallocate message.

voiceNumber - The number, from 0 - maxVoiceChannels, of the voice channel to be established.

sendVoiceFrame

public void sendVoiceFrame(VoiceConnection speaker,
                           VoiceConnection listener,
                           byte opcode,
                           byte voiceNumber,
                           multiverse.server.network.MVByteBuffer sourceBuf,
                           short pktLength)

Description copied from interface: VoiceSender

Send a voice data message to the client on the voice channel identitified by the voiceNumber.

Specified by:

sendVoiceFrame in interface VoiceSender

Parameters:

speaker - The VoiceConnection object that represents the speaker that was the source of voice data for the voice channel.

listener - The VoiceConnection object representing the listener player, whose client will be sent the voice data message.

opcode - Either VoicePlugin.opcodeAggregateData or VoicePlugin.opcodeData.

voiceNumber - The number, from 0 - maxVoiceChannels, of the voice channel to be established.

sourceBuf - A byte buffer holding the entire voice message as received from the speaker. The first byte of the message is at index 0 in buf.

pktLength - The number of bytes of message in the buf.

sendLoginStatus

public void sendLoginStatus(VoiceConnection receiver,
                            long playerOid,
                            boolean login)

sendExtensionMessage

public void sendExtensionMessage(WorldManagerClient.ExtensionMessage msg)

Description copied from interface: VoiceSender

Send a broadcast ExtensionMessage to anyone who cares. Used to send "event" messages from the voice groups.

Specified by:

sendExtensionMessage in interface VoiceSender

Parameters:

msg - The ExtensionMessage to send.

openSpeexVoiceFile

protected java.io.BufferedOutputStream openSpeexVoiceFile(long oid)

getConnectionData

public VoiceConnection getConnectionData(multiverse.server.network.ClientConnection con)

formatCon

public java.lang.String formatCon(multiverse.server.network.ClientConnection con)

connectionReset

public void connectionReset(multiverse.server.network.ClientConnection con)

Close record stream if it's open, deallocate all voices in use by the connection, and remove the listeners ??? TBD: Need to remove connection from a whole bunch of data structures.

Specified by:

connectionReset in interface multiverse.server.network.ClientConnection.MessageCallback

expungeVoiceClient

protected void expungeVoiceClient(long playerOid)

expungeVoiceClient

protected void expungeVoiceClient(long playerOid,
                                  VoiceConnection con)

incSeqNum

public static short incSeqNum(short original)

Increment the short seqNum so that it wraps around properly.

incSeqNum

public static short incSeqNum(short original,
                              int byWhat)

Increment the short seqNum so that it wraps around properly.

encodedFrameSizeForMode

public static int encodedFrameSizeForMode(int mode,
                                          boolean wideBand)

Return the total frame size for narrow or wide-band mode given

encodedFrameSizeFromFirstByte

public static int encodedFrameSizeFromFirstByte(byte b)

Return the frame size for the band/mode specified by the first byte of the Speex frame

opcodeString

public static java.lang.String opcodeString(byte opcode)

Return a string representation of the opcode number