1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
|
/**
* Copyright (C) 2022 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 com.android.telephony.imsmedia;
import android.os.Parcel;
import android.telephony.imsmedia.ImsMediaSession;
import android.util.Log;
import com.android.telephony.imsmedia.Utils.OpenSessionParams;
/**
* Text service for internal AP based RTP stack. This interacts with native library to open/close
* {@link TextLocalSession}
*/
public class TextService {
private static final String LOG_TAG = "TextService";
private long mNativeObject = 0;
private TextListener mListener = null;
TextService() {
mNativeObject = JNIImsMediaService.getInterface(ImsMediaSession.SESSION_TYPE_RTT);
}
/** Returns the native instance identifier of TextManager in libimsmedia */
public long getNativeObject() {
return mNativeObject;
}
/** Sets JNI listener to get JNI callback from libimsmediajni library */
public void setListener(final TextListener listener) {
mListener = listener;
}
/**
* Sends request message with the corresponding arguments to libimsmediajni
* library to operate
*
* @param sessionId : session identifier
* @param parcel : parcel argument to send to JNI
*/
public void sendRequest(final int sessionId, Parcel parcel) {
if (mNativeObject != 0) {
byte[] data = parcel.marshall();
parcel.recycle();
parcel = null;
JNIImsMediaService.sendMessage(mNativeObject, sessionId, data);
}
}
/**
* Opens a RTP session based on local the local sockets with the associated initial remote
* configuration if there is a valid RtpConfig passed. It starts the media flow if the media
* direction in the RtpConfig is set to any value other than MEDIA_DIRECTION_NO_FLOW. If the
* open session is successful then a new TextLocalSession object will be created using the
* JNIImsMediaListener#onMessage() API. If the open session is failed then a error code will be
* returned using JNIImsMediaListener#onMessage(int) API.
*
* @param sessionId A unique RTP session identifier
* @param sessionParams Paratmers including rtp, rtcp socket to send and receive incoming RTP
* packets and RtpConfig to create session.
*/
public void openSession(final int sessionId, final OpenSessionParams sessionParams) {
if (mNativeObject == 0 || sessionParams == null) {
return;
}
JNIImsMediaService.setListener(sessionId, mListener);
Log.d(LOG_TAG, "openSession: sessionId = " + sessionId
+ "," + sessionParams.getRtpConfig());
Parcel parcel = Parcel.obtain();
parcel.writeInt(TextSession.CMD_OPEN_SESSION);
final int socketFdRtp = sessionParams.getRtpFd().detachFd();
final int socketFdRtcp = sessionParams.getRtcpFd().detachFd();
parcel.writeInt(socketFdRtp);
parcel.writeInt(socketFdRtcp);
if (sessionParams.getRtpConfig() != null) {
sessionParams.getRtpConfig().writeToParcel(parcel, ImsMediaSession.SESSION_TYPE_RTT);
}
sendRequest(sessionId, parcel);
}
/**
* Closes the RTP session including cleanup of all the resources associated with the session.
* This will also close the session object and associated callback.
*
* @param sessionId The session id to be closed.
*/
public void closeSession(final int sessionId) {
Log.d(LOG_TAG, "closeSession");
Parcel parcel = Parcel.obtain();
parcel.writeInt(TextSession.CMD_CLOSE_SESSION);
sendRequest(sessionId, parcel);
}
}
|
