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不用iis建立网站,网络营销师主要做什么,如何建设政府网站评估体系,网站建设维护升级1.Linphone简介 1.1 简介 LinPhone是一个遵循GPL协议的开源网络电话或者IP语音电话（VOIP）系统，其主要如下。使用linphone，开发者可以在互联网上随意的通信，包括语音、视频、即时文本消息。linphone使用SIP协议&#…

 

1.Linphone简介

1.1 简介

LinPhone是一个遵循GPL协议的开源网络电话或者IP语音电话（VOIP）系统，其主要如下。使用linphone，开发者可以在互联网上随意的通信，包括语音、视频、即时文本消息。linphone使用SIP协议，是一个标准的开源网络电话系统，能将linphone与任何基于SIP的VoIP运营商连接起来，包括我们自己开发的免费的基于SIP的Audio/Video服务器。

LinPhone是一款自由软件（或者开源软件），你可以随意的下载和在LinPhone的基础上二次开发。LinPhone是可用于Linux, Windows, MacOSX 桌面电脑以及Android, iPhone, Blackberry移动设备。

学习LinPhone的源码，开源从以下几个部分着手： Java层框架实现的SIP三层协议架构: 传输层,事务层,语法编解码层； linphone动态库C源码实现的SIP功能: 注册,请求,请求超时,邀请会话,挂断电话,邀请视频,收发短信... linphone动态库C源码实现的音视频编解码功能； Android平台上的音视频捕获,播放功能；

1.2 基本使用

如果是Android系统用户，可以从谷歌应用商店安装或者从这个链接下载Linphone 。安装完成后，点击左上角的菜单按钮，选择进入助手界面。在助手界面，可以设定SIP账户或者Linphone账号，如下图：

2.基于linphone android sdk开发linphone

引入sdk依赖 

dependencies {
    //linphone
    debugImplementation "org.linphone:linphone-sdk-android-debug:5.0.0"
    releaseImplementation "org.linphone:linphone-sdk-android:5.0.0"
} 

为了方便调用，我们需要对Linphone进行简单的封装。首先，按照官方文档的介绍，创建一个CoreManager类，此类是sdk里面的管理类，用来控制来电铃声和启动CoreService，无特殊需求不需调用。需要注意的是，启动来电铃声需要导入media包，否则不会有来电铃声，如下

implementation 'androidx.media:media:1.2.0'

基本代码开发： 

package com.matt.linphonelibrary.coreimport android.annotation.SuppressLint
import android.content.Context
import android.os.Handler
import android.os.Looper
import android.telephony.PhoneStateListener
import android.telephony.TelephonyManager
import android.util.Log
import android.view.TextureView
import com.matt.linphonelibrary.R
import com.matt.linphonelibrary.callback.PhoneCallback
import com.matt.linphonelibrary.callback.RegistrationCallback
import com.matt.linphonelibrary.utils.AudioRouteUtils
import com.matt.linphonelibrary.utils.LinphoneUtils
import com.matt.linphonelibrary.utils.VideoZoomHelper
import org.linphone.core.*
import java.io.File
import java.util.*class LinphoneManager private constructor(private val context: Context) {private val TAG = javaClass.simpleNameprivate var core: Coreprivate var corePreferences: CorePreferencesprivate var coreIsStart = falsevar registrationCallback: RegistrationCallback? = nullvar phoneCallback: PhoneCallback? = nullinit {//日志收集Factory.instance().setLogCollectionPath(context.filesDir.absolutePath)Factory.instance().enableLogCollection(LogCollectionState.Enabled)corePreferences = CorePreferences(context)corePreferences.copyAssetsFromPackage()val config = Factory.instance().createConfigWithFactory(corePreferences.configPath,corePreferences.factoryConfigPath)corePreferences.config = configval appName = context.getString(R.string.app_name)Factory.instance().setDebugMode(corePreferences.debugLogs, appName)core = Factory.instance().createCoreWithConfig(config, context)}private var previousCallState = Call.State.Idleprivate val coreListener = object : CoreListenerStub() {override fun onGlobalStateChanged(core: Core, state: GlobalState?, message: String) {if (state === GlobalState.On) {}}//登录状态回调override fun onRegistrationStateChanged(core: Core,cfg: ProxyConfig,state: RegistrationState,message: String) {when (state) {RegistrationState.None -> registrationCallback?.registrationNone()RegistrationState.Progress -> registrationCallback?.registrationProgress()RegistrationState.Ok -> registrationCallback?.registrationOk()RegistrationState.Cleared -> registrationCallback?.registrationCleared()RegistrationState.Failed -> registrationCallback?.registrationFailed()}}//电话状态回调override fun onCallStateChanged(core: Core,call: Call,state: Call.State,message: String) {Log.i(TAG, "[Context] Call state changed [$state]")when (state) {Call.State.IncomingReceived, Call.State.IncomingEarlyMedia -> {if (gsmCallActive) {Log.w(TAG,"[Context] Refusing the call with reason busy because a GSM call is active")call.decline(Reason.Busy)return}phoneCallback?.incomingCall(call)gsmCallActive = true//自动接听if (corePreferences.autoAnswerEnabled) {val autoAnswerDelay = corePreferences.autoAnswerDelayif (autoAnswerDelay == 0) {Log.w(TAG, "[Context] Auto answering call immediately")answerCall(call)} else {Log.i(TAG,"[Context] Scheduling auto answering in $autoAnswerDelay milliseconds")val mainThreadHandler = Handler(Looper.getMainLooper())mainThreadHandler.postDelayed({Log.w(TAG, "[Context] Auto answering call")answerCall(call)}, autoAnswerDelay.toLong())}}}Call.State.OutgoingInit -> {phoneCallback?.outgoingInit(call)gsmCallActive = true}Call.State.OutgoingProgress -> {if (core.callsNb == 1 && corePreferences.routeAudioToBluetoothIfAvailable) {AudioRouteUtils.routeAudioToBluetooth(core, call)}}Call.State.Connected -> phoneCallback?.callConnected(call)Call.State.StreamsRunning -> {// Do not automatically route audio to bluetooth after first callif (core.callsNb == 1) {// Only try to route bluetooth / headphone / headset when the call is in StreamsRunning for the first timeif (previousCallState == Call.State.Connected) {Log.i(TAG,"[Context] First call going into StreamsRunning state for the first time, trying to route audio to headset or bluetooth if available")if (AudioRouteUtils.isHeadsetAudioRouteAvailable(core)) {AudioRouteUtils.routeAudioToHeadset(core, call)} else if (corePreferences.routeAudioToBluetoothIfAvailable && AudioRouteUtils.isBluetoothAudioRouteAvailable(core)) {AudioRouteUtils.routeAudioToBluetooth(core, call)}}}if (corePreferences.routeAudioToSpeakerWhenVideoIsEnabled && call.currentParams.videoEnabled()) {// Do not turn speaker on when video is enabled if headset or bluetooth is usedif (!AudioRouteUtils.isHeadsetAudioRouteAvailable(core) &&!AudioRouteUtils.isBluetoothAudioRouteCurrentlyUsed(core, call)) {Log.i(TAG,"[Context] Video enabled and no wired headset not bluetooth in use, routing audio to speaker")AudioRouteUtils.routeAudioToSpeaker(core, call)}}}Call.State.End, Call.State.Released, Call.State.Error -> {if (core.callsNb == 0) {when (state) {Call.State.End -> phoneCallback?.callEnd(call)Call.State.Released -> phoneCallback?.callReleased(call)Call.State.Error -> {val id = when (call.errorInfo.reason) {Reason.Busy -> R.string.call_error_user_busyReason.IOError -> R.string.call_error_io_errorReason.NotAcceptable -> R.string.call_error_incompatible_media_paramsReason.NotFound -> R.string.call_error_user_not_foundReason.Forbidden -> R.string.call_error_forbiddenelse -> R.string.call_error_unknown}phoneCallback?.error(context.getString(id))}}gsmCallActive = false}}}previousCallState = state}}/*** 启动linphone*/fun start() {if (!coreIsStart) {coreIsStart = trueLog.i(TAG, "[Context] Starting")core.addListener(coreListener)core.start()initLinphone()val telephonyManager =context.getSystemService(Context.TELEPHONY_SERVICE) as TelephonyManagerLog.i(TAG, "[Context] Registering phone state listener")telephonyManager.listen(phoneStateListener, PhoneStateListener.LISTEN_CALL_STATE)}}/*** 停止linphone*/fun stop() {coreIsStart = falseval telephonyManager =context.getSystemService(Context.TELEPHONY_SERVICE) as TelephonyManagerLog.i(TAG, "[Context] Unregistering phone state listener")telephonyManager.listen(phoneStateListener, PhoneStateListener.LISTEN_NONE)core.removeListener(coreListener)core.stop()}/*** 注册到服务器** @param username     账号名* @param password      密码* @param domain     IP地址：端口号*/fun createProxyConfig(username: String,password: String,domain: String,type: TransportType? = TransportType.Udp) {core.clearProxyConfig()val accountCreator = core.createAccountCreator(corePreferences.xmlRpcServerUrl)accountCreator.language = Locale.getDefault().languageaccountCreator.reset()accountCreator.username = usernameaccountCreator.password = passwordaccountCreator.domain = domainaccountCreator.displayName = usernameaccountCreator.transport = typeaccountCreator.createProxyConfig()}/*** 取消注册*/fun removeInvalidProxyConfig() {core.clearProxyConfig()}/*** 拨打电话* @param to String* @param isVideoCall Boolean*/fun startCall(to: String, isVideoCall: Boolean) {try {val addressToCall = core.interpretUrl(to)addressToCall?.displayName = toval params = core.createCallParams(null)//启用通话录音
//            params?.recordFile = LinphoneUtils.getRecordingFilePathForAddress(context, addressToCall!!)//启动低宽带模式if (LinphoneUtils.checkIfNetworkHasLowBandwidth(context)) {Log.w(TAG, "[Context] Enabling low bandwidth mode!")params?.enableLowBandwidth(true)}if (isVideoCall) {params?.enableVideo(true)core.enableVideoCapture(true)core.enableVideoDisplay(true)} else {params?.enableVideo(false)}if (params != null) {core.inviteAddressWithParams(addressToCall!!, params)} else {core.inviteAddress(addressToCall!!)}} catch (e: Exception) {e.printStackTrace()}}/*** 接听来电**/fun answerCall(call: Call) {Log.i(TAG, "[Context] Answering call $call")val params = core.createCallParams(call)//启用通话录音
//        params?.recordFile = LinphoneUtils.getRecordingFilePathForAddress(context, call.remoteAddress)if (LinphoneUtils.checkIfNetworkHasLowBandwidth(context)) {Log.w(TAG, "[Context] Enabling low bandwidth mode!")params?.enableLowBandwidth(true)}params?.enableVideo(isVideoCall(call))call.acceptWithParams(params)}/*** 谢绝电话* @param call Call*/fun declineCall(call: Call) {val voiceMailUri = corePreferences.voiceMailUriif (voiceMailUri != null && corePreferences.redirectDeclinedCallToVoiceMail) {val voiceMailAddress = core.interpretUrl(voiceMailUri)if (voiceMailAddress != null) {Log.i(TAG, "[Context] Redirecting call $call to voice mail URI: $voiceMailUri")call.redirectTo(voiceMailAddress)}} else {Log.i(TAG, "[Context] Declining call $call")call.decline(Reason.Declined)}}/*** 挂断电话*/fun terminateCall(call: Call) {Log.i(TAG, "[Context] Terminating call $call")call.terminate()}fun micEnabled() = core.micEnabled()fun speakerEnabled() = core.outputAudioDevice?.type == AudioDevice.Type.Speaker/*** 启动麦克风* @param micEnabled Boolean*/fun enableMic(micEnabled: Boolean) {core.enableMic(micEnabled)}/*** 扬声器或听筒* @param SpeakerEnabled Boolean*/fun enableSpeaker(SpeakerEnabled: Boolean) {if (SpeakerEnabled) {AudioRouteUtils.routeAudioToEarpiece(core)} else {AudioRouteUtils.routeAudioToSpeaker(core)}}/*** 是否是视频电话* @return Boolean*/fun isVideoCall(call: Call): Boolean {val remoteParams = call.remoteParamsreturn remoteParams != null && remoteParams.videoEnabled()}/*** 设置视频界面* @param videoRendering TextureView 对方界面* @param videoPreview CaptureTextureView 自己界面*/fun setVideoWindowId(videoRendering: TextureView, videoPreview: TextureView) {core.nativeVideoWindowId = videoRenderingcore.nativePreviewWindowId = videoPreview}/*** 设置视频电话可缩放* @param context Context* @param videoRendering TextureView*/fun setVideoZoom(context: Context, videoRendering: TextureView) {VideoZoomHelper(context, videoRendering, core)}fun switchCamera() {val currentDevice = core.videoDeviceLog.i(TAG, "[Context] Current camera device is $currentDevice")for (camera in core.videoDevicesList) {if (camera != currentDevice && camera != "StaticImage: Static picture") {Log.i(TAG, "[Context] New camera device will be $camera")core.videoDevice = camerabreak}}//        val conference = core.conference
//        if (conference == null || !conference.isIn) {
//            val call = core.currentCall
//            if (call == null) {
//                Log.w(TAG, "[Context] Switching camera while not in call")
//                return
//            }
//            call.update(null)
//        }}//初始化一些操作private fun initLinphone() {configureCore()initUserCertificates()}private fun configureCore() {// 来电铃声core.isNativeRingingEnabled = false// 来电振动core.isVibrationOnIncomingCallEnabled = truecore.enableEchoCancellation(true) //回声消除core.enableAdaptiveRateControl(true) //自适应码率控制}private var gsmCallActive = falseprivate val phoneStateListener = object : PhoneStateListener() {override fun onCallStateChanged(state: Int, phoneNumber: String?) {gsmCallActive = when (state) {TelephonyManager.CALL_STATE_OFFHOOK -> {Log.i(TAG, "[Context] Phone state is off hook")true}TelephonyManager.CALL_STATE_RINGING -> {Log.i(TAG, "[Context] Phone state is ringing")true}TelephonyManager.CALL_STATE_IDLE -> {Log.i(TAG, "[Context] Phone state is idle")false}else -> {Log.i(TAG, "[Context] Phone state is unexpected: $state")false}}}}//设置存放用户x509证书的目录路径private fun initUserCertificates() {val userCertsPath = corePreferences!!.userCertificatesPathval f = File(userCertsPath)if (!f.exists()) {if (!f.mkdir()) {Log.e(TAG, "[Context] $userCertsPath can't be created.")}}core.userCertificatesPath = userCertsPath}companion object {// For Singleton instantiation@SuppressLint("StaticFieldLeak")@Volatileprivate var instance: LinphoneManager? = nullfun getInstance(context: Context) =instance ?: synchronized(this) {instance ?: LinphoneManager(context).also { instance = it }}}}

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