/*
* Copyright (C) 2010 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package android.net.sip;
import android.content.Context;
import android.media.AudioManager;
import android.net.rtp.AudioCodec;
import android.net.rtp.AudioGroup;
import android.net.rtp.AudioStream;
import android.net.rtp.RtpStream;
import android.net.sip.SimpleSessionDescription.Media;
import android.net.wifi.WifiManager;
import android.os.Message;
import android.telephony.Rlog;
import android.text.TextUtils;
import java.io.IOException;
import java.net.InetAddress;
import java.net.UnknownHostException;
/**
* Handles an Internet audio call over SIP. You can instantiate this class with {@link SipManager},
* using {@link SipManager#makeAudioCall makeAudioCall()} and {@link SipManager#takeAudioCall
* takeAudioCall()}.
*
* <p class="note"><strong>Note:</strong> Using this class require the
* {@link android.Manifest.permission#INTERNET} and
* {@link android.Manifest.permission#USE_SIP} permissions. In addition, {@link
* #startAudio} requires the
* {@link android.Manifest.permission#RECORD_AUDIO},
* {@link android.Manifest.permission#ACCESS_WIFI_STATE}, and
* {@link android.Manifest.permission#WAKE_LOCK} permissions; and {@link #setSpeakerMode
* setSpeakerMode()} requires the
* {@link android.Manifest.permission#MODIFY_AUDIO_SETTINGS} permission.</p>
*
* <div class="special reference">
* <h3>Developer Guides</h3>
* <p>For more information about using SIP, read the
* <a href="{@docRoot}guide/topics/network/sip.html">Session Initiation Protocol</a>
* developer guide.</p>
* </div>
*/
public class SipAudioCall {
private static final String LOG_TAG = SipAudioCall.class.getSimpleName();
private static final boolean DBG = true;
private static final boolean RELEASE_SOCKET = true;
private static final boolean DONT_RELEASE_SOCKET = false;
private static final int SESSION_TIMEOUT = 5; // in seconds
private static final int TRANSFER_TIMEOUT = 15; // in seconds
/** Listener for events relating to a SIP call, such as when a call is being
* recieved ("on ringing") or a call is outgoing ("on calling").
* <p>Many of these events are also received by {@link SipSession.Listener}.</p>
*/
public static class Listener {
/**
* Called when the call object is ready to make another call.
* The default implementation calls {@link #onChanged}.
*
* @param call the call object that is ready to make another call
*/
public void onReadyToCall(SipAudioCall call) {
onChanged(call);
}
/**
* Called when a request is sent out to initiate a new call.
* The default implementation calls {@link #onChanged}.
*
* @param call the call object that carries out the audio call
*/
public void onCalling(SipAudioCall call) {
onChanged(call);
}
/**
* Called when a new call comes in.
* The default implementation calls {@link #onChanged}.
*
* @param call the call object that carries out the audio call
* @param caller the SIP profile of the caller
*/
public void onRinging(SipAudioCall call, SipProfile caller) {
onChanged(call);
}
/**
* Called when a RINGING response is received for the INVITE request
* sent. The default implementation calls {@link #onChanged}.
*
* @param call the call object that carries out the audio call
*/
public void onRingingBack(SipAudioCall call) {
onChanged(call);
}
/**
* Called when the session is established.
* The default implementation calls {@link #onChanged}.
*
* @param call the call object that carries out the audio call
*/
public void onCallEstablished(SipAudioCall call) {
onChanged(call);
}
/**
* Called when the session is terminated.
* The default implementation calls {@link #onChanged}.
*
* @param call the call object that carries out the audio call
*/
public void onCallEnded(SipAudioCall call) {
onChanged(call);
}
/**
* Called when the peer is busy during session initialization.
* The default implementation calls {@link #onChanged}.
*
* @param call the call object that carries out the audio call
*/
public void onCallBusy(SipAudioCall call) {
onChanged(call);
}
/**
* Called when the call is on hold.
* The default implementation calls {@link #onChanged}.
*
* @param call the call object that carries out the audio call
*/
public void onCallHeld(SipAudioCall call) {
onChanged(call);
}
/**
* Called when an error occurs. The default implementation is no op.
*
* @param call the call object that carries out the audio call
* @param errorCode error code of this error
* @param errorMessage error message
* @see SipErrorCode
*/
public void onError(SipAudioCall call, int errorCode,
String errorMessage) {
// no-op
}
/**
* Called when an event occurs and the corresponding callback is not
* overridden. The default implementation is no op. Error events are
* not re-directed to this callback and are handled in {@link #onError}.
*/
public void onChanged(SipAudioCall call) {
// no-op
}
}
private Context mContext;
private SipProfile mLocalProfile;
private SipAudioCall.Listener mListener;
private SipSession mSipSession;
private SipSession mTransferringSession;
private long mSessionId = System.currentTimeMillis();
private String mPeerSd;
private AudioStream mAudioStream;
private AudioGroup mAudioGroup;
private boolean mInCall = false;
private boolean mMuted = false;
private boolean mHold = false;
private WifiManager mWm;
private WifiManager.WifiLock mWifiHighPerfLock;
private int mErrorCode = SipErrorCode.NO_ERROR;
private String mErrorMessage;
/**
* Creates a call object with the local SIP profile.
* @param context the context for accessing system services such as
* ringtone, audio, WIFI etc
*/
public SipAudioCall(Context context, SipProfile localProfile) {
mContext = context;
mLocalProfile = localProfile;
mWm = (WifiManager) context.getSystemService(Context.WIFI_SERVICE);
}
/**
* Sets the listener to listen to the audio call events. The method calls
* {@link #setListener setListener(listener, false)}.
*
* @param listener to listen to the audio call events of this object
* @see #setListener(Listener, boolean)
*/
public void setListener(SipAudioCall.Listener listener) {
setListener(listener, false);
}
/**
* Sets the listener to listen to the audio call events. A
* {@link SipAudioCall} can only hold one listener at a time. Subsequent
* calls to this method override the previous listener.
*
* @param listener to listen to the audio call events of this object
* @param callbackImmediately set to true if the caller wants to be called
* back immediately on the current state
*/
public void setListener(SipAudioCall.Listener listener,
boolean callbackImmediately) {
mListener = listener;
try {
if ((listener == null) || !callbackImmediately) {
// do nothing
} else if (mErrorCode != SipErrorCode.NO_ERROR) {
listener.onError(this, mErrorCode, mErrorMessage);
} else if (mInCall) {
if (mHold) {
listener.onCallHeld(this);
} else {
listener.onCallEstablished(this);
}
} else {
int state = getState();
switch (state) {
case SipSession.State.READY_TO_CALL:
listener.onReadyToCall(this);
break;
case SipSession.State.INCOMING_CALL:
listener.onRinging(this, getPeerProfile());
break;
case SipSession.State.OUTGOING_CALL:
listener.onCalling(this);
break;
case SipSession.State.OUTGOING_CALL_RING_BACK:
listener.onRingingBack(this);
break;
}
}
} catch (Throwable t) {
loge("setListener()", t);
}
}
/**
* Checks if the call is established.
*
* @return true if the call is established
*/
public boolean isInCall() {
synchronized (this) {
return mInCall;
}
}
/**
* Checks if the call is on hold.
*
* @return true if the call is on hold
*/
public boolean isOnHold() {
synchronized (this) {
return mHold;
}
}
/**
* Closes this object. This object is not usable after being closed.
*/
public void close() {
close(true);
}
private synchronized void close(boolean closeRtp) {
if (closeRtp) stopCall(RELEASE_SOCKET);
mInCall = false;
mHold = false;
mSessionId = System.currentTimeMillis();
mErrorCode = SipErrorCode.NO_ERROR;
mErrorMessage = null;
if (mSipSession != null) {
mSipSession.setListener(null);
mSipSession = null;
}
}
/**
* Gets the local SIP profile.
*
* @return the local SIP profile
*/
public SipProfile getLocalProfile() {
synchronized (this) {
return mLocalProfile;
}
}
/**
* Gets the peer's SIP profile.
*
* @return the peer's SIP profile
*/
public SipProfile getPeerProfile() {
synchronized (this) {
return (mSipSession == null) ? null : mSipSession.getPeerProfile();
}
}
/**
* Gets the state of the {@link SipSession} that carries this call.
* The value returned must be one of the states in {@link SipSession.State}.
*
* @return the session state
*/
public int getState() {
synchronized (this) {
if (mSipSession == null) return SipSession.State.READY_TO_CALL;
return mSipSession.getState();
}
}
/**
* Gets the {@link SipSession} that carries this call.
*
* @return the session object that carries this call
* @hide
*/
public SipSession getSipSession() {
synchronized (this) {
return mSipSession;
}
}
private synchronized void transferToNewSession() {
if (mTransferringSession == null) return;
SipSession origin = mSipSession;
mSipSession = mTransferringSession;
mTransferringSession = null;
// stop the replaced call.
if (mAudioStream != null) {
mAudioStream.join(null);
} else {
try {
mAudioStream = new AudioStream(InetAddress.getByName(
getLocalIp()));
} catch (Throwable t) {
loge("transferToNewSession():", t);
}
}
if (origin != null) origin.endCall();
startAudio();
}
private SipSession.Listener createListener() {
return new SipSession.Listener() {
@Override
public void onCalling(SipSession session) {
if (DBG) log("onCalling: session=" + session);
Listener listener = mListener;
if (listener != null) {
try {
listener.onCalling(SipAudioCall.this);
} catch (Throwable t) {
loge("onCalling():", t);
}
}
}
@Override
public void onRingingBack(SipSession session) {
if (DBG) log("onRingingBackk: " + session);
Listener listener = mListener;
if (listener != null) {
try {
listener.onRingingBack(SipAudioCall.this);
} catch (Throwable t) {
loge("onRingingBack():", t);
}
}
}
@Override
public void onRinging(SipSession session,
SipProfile peerProfile, String sessionDescription) {
// this callback is triggered only for reinvite.
synchronized (SipAudioCall.this) {
if ((mSipSession == null) || !mInCall
|| !session.getCallId().equals(
mSipSession.getCallId())) {
// should not happen
session.endCall();
return;
}
// session changing request
try {
String answer = createAnswer(sessionDescription).encode();
mSipSession.answerCall(answer, SESSION_TIMEOUT);
} catch (Throwable e) {
loge("onRinging():", e);
session.endCall();
}
}
}
@Override
public void onCallEstablished(SipSession session,
String sessionDescription) {
mPeerSd = sessionDescription;
if (DBG) log("onCallEstablished(): " + mPeerSd);
// TODO: how to notify the UI that the remote party is changed
if ((mTransferringSession != null)
&& (session == mTransferringSession)) {
transferToNewSession();
return;
}
Listener listener = mListener;
if (listener != null) {
try {
if (mHold) {
listener.onCallHeld(SipAudioCall.this);
} else {
listener.onCallEstablished(SipAudioCall.this);
}
} catch (Throwable t) {
loge("onCallEstablished(): ", t);
}
}
}
@Override
public void onCallEnded(SipSession session) {
if (DBG) log("onCallEnded: " + session + " mSipSession:" + mSipSession);
// reset the trasnferring session if it is the one.
if (session == mTransferringSession) {
mTransferringSession = null;
return;
}
// or ignore the event if the original session is being
// transferred to the new one.
if ((mTransferringSession != null) ||
(session != mSipSession)) return;
Listener listener = mListener;
if (listener != null) {
try {
listener.onCallEnded(SipAudioCall.this);
} catch (Throwable t) {
loge("onCallEnded(): ", t);
}
}
close();
}
@Override
public void onCallBusy(SipSession session) {
if (DBG) log("onCallBusy: " + session);
Listener listener = mListener;
if (listener != null) {
try {
listener.onCallBusy(SipAudioCall.this);
} catch (Throwable t) {
loge("onCallBusy(): ", t);
}
}
close(false);
}
@Override
public void onCallChangeFailed(SipSession session, int errorCode,
String message) {
if (DBG) log("onCallChangedFailed: " + message);
mErrorCode = errorCode;
mErrorMessage = message;
Listener listener = mListener;
if (listener != null) {
try {
listener.onError(SipAudioCall.this, mErrorCode,
message);
} catch (Throwable t) {
loge("onCallBusy():", t);
}
}
}
@Override
public void onError(SipSession session, int errorCode,
String message) {
SipAudioCall.this.onError(errorCode, message);
}
@Override
public void onRegistering(SipSession session) {
// irrelevant
}
@Override
public void onRegistrationTimeout(SipSession session) {
// irrelevant
}
@Override
public void onRegistrationFailed(SipSession session, int errorCode,
String message) {
// irrelevant
}
@Override
public void onRegistrationDone(SipSession session, int duration) {
// irrelevant
}
@Override
public void onCallTransferring(SipSession newSession,
String sessionDescription) {
if (DBG) log("onCallTransferring: mSipSession="
+ mSipSession + " newSession=" + newSession);
mTransferringSession = newSession;
try {
if (sessionDescription == null) {
newSession.makeCall(newSession.getPeerProfile(),
createOffer().encode(), TRANSFER_TIMEOUT);
} else {
String answer = createAnswer(sessionDescription).encode();
newSession.answerCall(answer, SESSION_TIMEOUT);
}
} catch (Throwable e) {
loge("onCallTransferring()", e);
newSession.endCall();
}
}
};
}
private void onError(int errorCode, String message) {
if (DBG) log("onError: "
+ SipErrorCode.toString(errorCode) + ": " + message);
mErrorCode = errorCode;
mErrorMessage = message;
Listener listener = mListener;
if (listener != null) {
try {
listener.onError(this, errorCode, message);
} catch (Throwable t) {
loge("onError():", t);
}
}
synchronized (this) {
if ((errorCode == SipErrorCode.DATA_CONNECTION_LOST)
|| !isInCall()) {
close(true);
}
}
}
/**
* Attaches an incoming call to this call object.
*
* @param session the session that receives the incoming call
* @param sessionDescription the session description of the incoming call
* @throws SipException if the SIP service fails to attach this object to
* the session or VOIP API is not supported by the device
* @see SipManager#isVoipSupported
*/
public void attachCall(SipSession session, String sessionDescription)
throws SipException {
if (!SipManager.isVoipSupported(mContext)) {
throw new SipException("VOIP API is not supported");
}
synchronized (this) {
mSipSession = session;
mPeerSd = sessionDescription;
if (DBG) log("attachCall(): " + mPeerSd);
try {
session.setListener(createListener());
} catch (Throwable e) {
loge("attachCall()", e);
throwSipException(e);
}
}
}
/**
* Initiates an audio call to the specified profile. The attempt will be
* timed out if the call is not established within {@code timeout} seconds
* and {@link Listener#onError onError(SipAudioCall, SipErrorCode.TIME_OUT, String)}
* will be called.
*
* @param peerProfile the SIP profile to make the call to
* @param sipSession the {@link SipSession} for carrying out the call
* @param timeout the timeout value in seconds. Default value (defined by
* SIP protocol) is used if {@code timeout} is zero or negative.
* @see Listener#onError
* @throws SipException if the SIP service fails to create a session for the
* call or VOIP API is not supported by the device
* @see SipManager#isVoipSupported
*/
public void makeCall(SipProfile peerProfile, SipSession sipSession,
int timeout) throws SipException {
if (DBG) log("makeCall: " + peerProfile + " session=" + sipSession + " timeout=" + timeout);
if (!SipManager.isVoipSupported(mContext)) {
throw new SipException("VOIP API is not supported");
}
synchronized (this) {
mSipSession = sipSession;
try {
mAudioStream = new AudioStream(InetAddress.getByName(
getLocalIp()));
sipSession.setListener(createListener());
sipSession.makeCall(peerProfile, createOffer().encode(),
timeout);
} catch (IOException e) {
loge("makeCall:", e);
throw new SipException("makeCall()", e);
}
}
}
/**
* Ends a call.
* @throws SipException if the SIP service fails to end the call
*/
public void endCall() throws SipException {
if (DBG) log("endCall: mSipSession" + mSipSession);
synchronized (this) {
stopCall(RELEASE_SOCKET);
mInCall = false;
// perform the above local ops first and then network op
if (mSipSession != null) mSipSession.endCall();
}
}
/**
* Puts a call on hold. When succeeds, {@link Listener#onCallHeld} is
* called. The attempt will be timed out if the call is not established
* within {@code timeout} seconds and
* {@link Listener#onError onError(SipAudioCall, SipErrorCode.TIME_OUT, String)}
* will be called.
*
* @param timeout the timeout value in seconds. Default value (defined by
* SIP protocol) is used if {@code timeout} is zero or negative.
* @see Listener#onError
* @throws SipException if the SIP service fails to hold the call
*/
public void holdCall(int timeout) throws SipException {
if (DBG) log("holdCall: mSipSession" + mSipSession + " timeout=" + timeout);
synchronized (this) {
if (mHold) return;
if (mSipSession == null) {
loge("holdCall:");
throw new SipException("Not in a call to hold call");
}
mSipSession.changeCall(createHoldOffer().encode(), timeout);
mHold = true;
setAudioGroupMode();
}
}
/**
* Answers a call. The attempt will be timed out if the call is not
* established within {@code timeout} seconds and
* {@link Listener#onError onError(SipAudioCall, SipErrorCode.TIME_OUT, String)}
* will be called.
*
* @param timeout the timeout value in seconds. Default value (defined by
* SIP protocol) is used if {@code timeout} is zero or negative.
* @see Listener#onError
* @throws SipException if the SIP service fails to answer the call
*/
public void answerCall(int timeout) throws SipException {
if (DBG) log("answerCall: mSipSession" + mSipSession + " timeout=" + timeout);
synchronized (this) {
if (mSipSession == null) {
throw new SipException("No call to answer");
}
try {
mAudioStream = new AudioStream(InetAddress.getByName(
getLocalIp()));
mSipSession.answerCall(createAnswer(mPeerSd).encode(), timeout);
} catch (IOException e) {
loge("answerCall:", e);
throw new SipException("answerCall()", e);
}
}
}
/**
* Continues a call that's on hold. When succeeds,
* {@link Listener#onCallEstablished} is called. The attempt will be timed
* out if the call is not established within {@code timeout} seconds and
* {@link Listener#onError onError(SipAudioCall, SipErrorCode.TIME_OUT, String)}
* will be called.
*
* @param timeout the timeout value in seconds. Default value (defined by
* SIP protocol) is used if {@code timeout} is zero or negative.
* @see Listener#onError
* @throws SipException if the SIP service fails to unhold the call
*/
public void continueCall(int timeout) throws SipException {
if (DBG) log("continueCall: mSipSession" + mSipSession + " timeout=" + timeout);
synchronized (this) {
if (!mHold) return;
mSipSession.changeCall(createContinueOffer().encode(), timeout);
mHold = false;
setAudioGroupMode();
}
}
private SimpleSessionDescription createOffer() {
SimpleSessionDescription offer =
new SimpleSessionDescription(mSessionId, getLocalIp());
AudioCodec[] codecs = AudioCodec.getCodecs();
Media media = offer.newMedia(
"audio", mAudioStream.getLocalPort(), 1, "RTP/AVP");
for (AudioCodec codec : AudioCodec.getCodecs()) {
media.setRtpPayload(codec.type, codec.rtpmap, codec.fmtp);
}
media.setRtpPayload(127, "telephone-event/8000", "0-15");
if (DBG) log("createOffer: offer=" + offer);
return offer;
}
private SimpleSessionDescription createAnswer(String offerSd) {
if (TextUtils.isEmpty(offerSd)) return createOffer();
SimpleSessionDescription offer =
new SimpleSessionDescription(offerSd);
SimpleSessionDescription answer =
new SimpleSessionDescription(mSessionId, getLocalIp());
AudioCodec codec = null;
for (Media media : offer.getMedia()) {
if ((codec == null) && (media.getPort() > 0)
&& "audio".equals(media.getType())
&& "RTP/AVP".equals(media.getProtocol())) {
// Find the first audio codec we supported.
for (int type : media.getRtpPayloadTypes()) {
codec = AudioCodec.getCodec(type, media.getRtpmap(type),
media.getFmtp(type));
if (codec != null) {
break;
}
}
if (codec != null) {
Media reply = answer.newMedia(
"audio", mAudioStream.getLocalPort(), 1, "RTP/AVP");
reply.setRtpPayload(codec.type, codec.rtpmap, codec.fmtp);
// Check if DTMF is supported in the same media.
for (int type : media.getRtpPayloadTypes()) {
String rtpmap = media.getRtpmap(type);
if ((type != codec.type) && (rtpmap != null)
&& rtpmap.startsWith("telephone-event")) {
reply.setRtpPayload(
type, rtpmap, media.getFmtp(type));
}
}
// Handle recvonly and sendonly.
if (media.getAttribute("recvonly") != null) {
answer.setAttribute("sendonly", "");
} else if(media.getAttribute("sendonly") != null) {
answer.setAttribute("recvonly", "");
} else if(offer.getAttribute("recvonly") != null) {
answer.setAttribute("sendonly", "");
} else if(offer.getAttribute("sendonly") != null) {
answer.setAttribute("recvonly", "");
}
continue;
}
}
// Reject the media.
Media reply = answer.newMedia(
media.getType(), 0, 1, media.getProtocol());
for (String format : media.getFormats()) {
reply.setFormat(format, null);
}
}
if (codec == null) {
loge("createAnswer: no suitable codes");
throw new IllegalStateException("Reject SDP: no suitable codecs");
}
if (DBG) log("createAnswer: answer=" + answer);
return answer;
}
private SimpleSessionDescription createHoldOffer() {
SimpleSessionDescription offer = createContinueOffer();
offer.setAttribute("sendonly", "");
if (DBG) log("createHoldOffer: offer=" + offer);
return offer;
}
private SimpleSessionDescription createContinueOffer() {
if (DBG) log("createContinueOffer");
SimpleSessionDescription offer =
new SimpleSessionDescription(mSessionId, getLocalIp());
Media media = offer.newMedia(
"audio", mAudioStream.getLocalPort(), 1, "RTP/AVP");
AudioCodec codec = mAudioStream.getCodec();
media.setRtpPayload(codec.type, codec.rtpmap, codec.fmtp);
int dtmfType = mAudioStream.getDtmfType();
if (dtmfType != -1) {
media.setRtpPayload(dtmfType, "telephone-event/8000", "0-15");
}
return offer;
}
private void grabWifiHighPerfLock() {
if (mWifiHighPerfLock == null) {
if (DBG) log("grabWifiHighPerfLock:");
mWifiHighPerfLock = ((WifiManager)
mContext.getSystemService(Context.WIFI_SERVICE))
.createWifiLock(WifiManager.WIFI_MODE_FULL_HIGH_PERF, LOG_TAG);
mWifiHighPerfLock.acquire();
}
}
private void releaseWifiHighPerfLock() {
if (mWifiHighPerfLock != null) {
if (DBG) log("releaseWifiHighPerfLock:");
mWifiHighPerfLock.release();
mWifiHighPerfLock = null;
}
}
private boolean isWifiOn() {
return (mWm.getConnectionInfo().getBSSID() == null) ? false : true;
}
/** Toggles mute. */
public void toggleMute() {
synchronized (this) {
mMuted = !mMuted;
setAudioGroupMode();
}
}
/**
* Checks if the call is muted.
*
* @return true if the call is muted
*/
public boolean isMuted() {
synchronized (this) {
return mMuted;
}
}
/**
* Puts the device to speaker mode.
* <p class="note"><strong>Note:</strong> Requires the
* {@link android.Manifest.permission#MODIFY_AUDIO_SETTINGS} permission.</p>
*
* @param speakerMode set true to enable speaker mode; false to disable
*/
public void setSpeakerMode(boolean speakerMode) {
synchronized (this) {
((AudioManager) mContext.getSystemService(Context.AUDIO_SERVICE))
.setSpeakerphoneOn(speakerMode);
setAudioGroupMode();
}
}
private boolean isSpeakerOn() {
return ((AudioManager) mContext.getSystemService(Context.AUDIO_SERVICE))
.isSpeakerphoneOn();
}
/**
* Sends a DTMF code. According to <a href="http://tools.ietf.org/html/rfc2833">RFC 2883</a>,
* event 0--9 maps to decimal
* value 0--9, '*' to 10, '#' to 11, event 'A'--'D' to 12--15, and event
* flash to 16. Currently, event flash is not supported.
*
* @param code the DTMF code to send. Value 0 to 15 (inclusive) are valid
* inputs.
*/
public void sendDtmf(int code) {
sendDtmf(code, null);
}
/**
* Sends a DTMF code. According to <a href="http://tools.ietf.org/html/rfc2833">RFC 2883</a>,
* event 0--9 maps to decimal
* value 0--9, '*' to 10, '#' to 11, event 'A'--'D' to 12--15, and event
* flash to 16. Currently, event flash is not supported.
*
* @param code the DTMF code to send. Value 0 to 15 (inclusive) are valid
* inputs.
* @param result the result message to send when done
*/
public void sendDtmf(int code, Message result) {
synchronized (this) {
AudioGroup audioGroup = getAudioGroup();
if ((audioGroup != null) && (mSipSession != null)
&& (SipSession.State.IN_CALL == getState())) {
if (DBG) log("sendDtmf: code=" + code + " result=" + result);
audioGroup.sendDtmf(code);
}
if (result != null) result.sendToTarget();
}
}
/**
* Gets the {@link AudioStream} object used in this call. The object
* represents the RTP stream that carries the audio data to and from the
* peer. The object may not be created before the call is established. And
* it is undefined after the call ends or the {@link #close} method is
* called.
*
* @return the {@link AudioStream} object or null if the RTP stream has not
* yet been set up
* @hide
*/
public AudioStream getAudioStream() {
synchronized (this) {
return mAudioStream;
}
}
/**
* Gets the {@link AudioGroup} object which the {@link AudioStream} object
* joins. The group object may not exist before the call is established.
* Also, the {@code AudioStream} may change its group during a call (e.g.,
* after the call is held/un-held). Finally, the {@code AudioGroup} object
* returned by this method is undefined after the call ends or the
* {@link #close} method is called. If a group object is set by
* {@link #setAudioGroup(AudioGroup)}, then this method returns that object.
*
* @return the {@link AudioGroup} object or null if the RTP stream has not
* yet been set up
* @see #getAudioStream
* @hide
*/
public AudioGroup getAudioGroup() {
synchronized (this) {
if (mAudioGroup != null) return mAudioGroup;
return ((mAudioStream == null) ? null : mAudioStream.getGroup());
}
}
/**
* Sets the {@link AudioGroup} object which the {@link AudioStream} object
* joins. If {@code audioGroup} is null, then the {@code AudioGroup} object
* will be dynamically created when needed. Note that the mode of the
* {@code AudioGroup} is not changed according to the audio settings (i.e.,
* hold, mute, speaker phone) of this object. This is mainly used to merge
* multiple {@code SipAudioCall} objects to form a conference call. The
* settings of the first object (that merges others) override others'.
*
* @see #getAudioStream
* @hide
*/
public void setAudioGroup(AudioGroup group) {
synchronized (this) {
if (DBG) log("setAudioGroup: group=" + group);
if ((mAudioStream != null) && (mAudioStream.getGroup() != null)) {
mAudioStream.join(group);
}
mAudioGroup = group;
}
}
/**
* Starts the audio for the established call. This method should be called
* after {@link Listener#onCallEstablished} is called.
* <p class="note"><strong>Note:</strong> Requires the
* {@link android.Manifest.permission#RECORD_AUDIO},
* {@link android.Manifest.permission#ACCESS_WIFI_STATE} and
* {@link android.Manifest.permission#WAKE_LOCK} permissions.</p>
*/
public void startAudio() {
try {
startAudioInternal();
} catch (UnknownHostException e) {
onError(SipErrorCode.PEER_NOT_REACHABLE, e.getMessage());
} catch (Throwable e) {
onError(SipErrorCode.CLIENT_ERROR, e.getMessage());
}
}
private synchronized void startAudioInternal() throws UnknownHostException {
if (DBG) loge("startAudioInternal: mPeerSd=" + mPeerSd);
if (mPeerSd == null) {
throw new IllegalStateException("mPeerSd = null");
}
stopCall(DONT_RELEASE_SOCKET);
mInCall = true;
// Run exact the same logic in createAnswer() to setup mAudioStream.
SimpleSessionDescription offer =
new SimpleSessionDescription(mPeerSd);
AudioStream stream = mAudioStream;
AudioCodec codec = null;
for (Media media : offer.getMedia()) {
if ((codec == null) && (media.getPort() > 0)
&& "audio".equals(media.getType())
&& "RTP/AVP".equals(media.getProtocol())) {
// Find the first audio codec we supported.
for (int type : media.getRtpPayloadTypes()) {
codec = AudioCodec.getCodec(
type, media.getRtpmap(type), media.getFmtp(type));
if (codec != null) {
break;
}
}
if (codec != null) {
// Associate with the remote host.
String address = media.getAddress();
if (address == null) {
address = offer.getAddress();
}
stream.associate(InetAddress.getByName(address),
media.getPort());
stream.setDtmfType(-1);
stream.setCodec(codec);
// Check if DTMF is supported in the same media.
for (int type : media.getRtpPayloadTypes()) {
String rtpmap = media.getRtpmap(type);
if ((type != codec.type) && (rtpmap != null)
&& rtpmap.startsWith("telephone-event")) {
stream.setDtmfType(type);
}
}
// Handle recvonly and sendonly.
if (mHold) {
stream.setMode(RtpStream.MODE_NORMAL);
} else if (media.getAttribute("recvonly") != null) {
stream.setMode(RtpStream.MODE_SEND_ONLY);
} else if(media.getAttribute("sendonly") != null) {
stream.setMode(RtpStream.MODE_RECEIVE_ONLY);
} else if(offer.getAttribute("recvonly") != null) {
stream.setMode(RtpStream.MODE_SEND_ONLY);
} else if(offer.getAttribute("sendonly") != null) {
stream.setMode(RtpStream.MODE_RECEIVE_ONLY);
} else {
stream.setMode(RtpStream.MODE_NORMAL);
}
break;
}
}
}
if (codec == null) {
throw new IllegalStateException("Reject SDP: no suitable codecs");
}
if (isWifiOn()) grabWifiHighPerfLock();
// AudioGroup logic:
AudioGroup audioGroup = getAudioGroup();
if (mHold) {
// don't create an AudioGroup here; doing so will fail if
// there's another AudioGroup out there that's active
} else {
if (audioGroup == null) audioGroup = new AudioGroup();
stream.join(audioGroup);
}
setAudioGroupMode();
}
// set audio group mode based on current audio configuration
private void setAudioGroupMode() {
AudioGroup audioGroup = getAudioGroup();
if (DBG) log("setAudioGroupMode: audioGroup=" + audioGroup);
if (audioGroup != null) {
if (mHold) {
audioGroup.setMode(AudioGroup.MODE_ON_HOLD);
} else if (mMuted) {
audioGroup.setMode(AudioGroup.MODE_MUTED);
} else if (isSpeakerOn()) {
audioGroup.setMode(AudioGroup.MODE_ECHO_SUPPRESSION);
} else {
audioGroup.setMode(AudioGroup.MODE_NORMAL);
}
}
}
private void stopCall(boolean releaseSocket) {
if (DBG) log("stopCall: releaseSocket=" + releaseSocket);
releaseWifiHighPerfLock();
if (mAudioStream != null) {
mAudioStream.join(null);
if (releaseSocket) {
mAudioStream.release();
mAudioStream = null;
}
}
}
private String getLocalIp() {
return mSipSession.getLocalIp();
}
private void throwSipException(Throwable throwable) throws SipException {
if (throwable instanceof SipException) {
throw (SipException) throwable;
} else {
throw new SipException("", throwable);
}
}
private void log(String s) {
Rlog.d(LOG_TAG, s);
}
private void loge(String s) {
Rlog.e(LOG_TAG, s);
}
private void loge(String s, Throwable t) {
Rlog.e(LOG_TAG, s, t);
}
}
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