加入初始化旗標

.idea/misc.xml

@@ -16,5 +16,5 @@
     </option>
   </component>
   <component name="ExternalStorageConfigurationManager" enabled="true" />
-  <component name="ProjectRootManager" version="2" languageLevel="JDK_16" project-jdk-name="16" project-jdk-type="JavaSDK" />
+  <component name="ProjectRootManager" version="2" languageLevel="JDK_16_PREVIEW" project-jdk-name="11" project-jdk-type="JavaSDK" />
 </project>

app/build.gradle

@@ -1,15 +1,18 @@
 plugins {
     id 'com.android.application'
+    id 'org.jetbrains.kotlin.android'
+    id 'org.jetbrains.kotlin.plugin.parcelize'
+    id 'org.jetbrains.kotlin.kapt'
 }
-apply plugin: 'kotlin-android'
 
 android {
-    compileSdk 32
+    ndkVersion "21.3.6528147"
+    compileSdk 33
 
     defaultConfig {
         applicationId "com.ray650128.gstreamer_demo_app"
         minSdk 26
-        targetSdk 32
+        targetSdk 33
         versionCode 1
         versionName "1.0"
 
@@ -26,23 +29,33 @@ android {
         sourceCompatibility JavaVersion.VERSION_1_8
         targetCompatibility JavaVersion.VERSION_1_8
     }
-
+    kotlinOptions {
+        jvmTarget = '1.8'
+    }
+    lint {
+        abortOnError false
+        checkReleaseBuilds false
+    }
     viewBinding.enabled = true
+    namespace 'com.ray650128.gstreamer_demo_app'
 }
 
 dependencies {
 
-    implementation 'androidx.appcompat:appcompat:1.0.0'
+    implementation 'androidx.core:core-ktx:1.9.0'
-    implementation 'androidx.constraintlayout:constraintlayout:1.1.3'
+    implementation 'androidx.appcompat:appcompat:1.5.1'
-    implementation project(path: ':gstreamer_player')
+    implementation 'com.google.android.material:material:1.7.0'
+    implementation 'androidx.constraintlayout:constraintlayout:2.1.4'
+    implementation 'androidx.legacy:legacy-support-v4:1.0.0'
     implementation 'androidx.gridlayout:gridlayout:1.0.0'
-    implementation 'androidx.viewpager2:viewpager2:1.0.0'
+    implementation 'androidx.core:core-ktx:+'
     testImplementation 'junit:junit:4.13.2'
-    androidTestImplementation 'androidx.test.ext:junit:1.1.1'
+    androidTestImplementation 'androidx.test.ext:junit:1.1.5'
-    androidTestImplementation 'androidx.test.espresso:espresso-core:3.1.0'
+    androidTestImplementation 'androidx.test.espresso:espresso-core:3.5.1'
-    implementation "androidx.core:core-ktx:+"
+
-    implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
+    implementation project(path: ':gstreamer_player')
-}
+
-repositories {
+    // Android Jetpack lib
-    mavenCentral()
+    implementation("androidx.fragment:fragment-ktx:1.5.5")
+    implementation("androidx.activity:activity-ktx:1.6.1")
 }

app/src/main/AndroidManifest.xml

@@ -1,8 +1,8 @@
 <?xml version="1.0" encoding="utf-8"?>
-<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+<manifest xmlns:android="http://schemas.android.com/apk/res/android">
-    package="com.ray650128.gstreamer_demo_app">
 
     <application
+        android:name=".MyApplication"
         android:allowBackup="true"
         android:icon="@mipmap/ic_launcher"
         android:label="@string/app_name"
@@ -10,14 +10,19 @@
         android:supportsRtl="true"
         android:theme="@style/Theme.Gstreamer">
         <activity
-            android:name="com.ray650128.gstreamer_demo_app.MainActivity"
+            android:name="com.ray650128.gstreamer_demo_app.ui.mainScreen.MainActivity"
-            android:exported="true">
+            android:exported="true"
+            android:screenOrientation="nosensor">
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />
 
                 <category android:name="android.intent.category.LAUNCHER" />
             </intent-filter>
         </activity>
+        <activity
+            android:name=".ui.monitoringScreen.MonitoringActivity"
+            android:exported="false"
+            android:screenOrientation="nosensor" />
     </application>
 
 </manifest>

app/src/main/java/com/ray650128/gstreamer_demo_app/Constants.kt

@@ -0,0 +1,5 @@
+package com.ray650128.gstreamer_demo_app
+
+object Constants {
+    const val CONF_DELAY_BASE_MILLIS = 1000L
+}

app/src/main/java/com/ray650128/gstreamer_demo_app/GridVideoFragment.kt

@@ -1,227 +0,0 @@
-package com.ray650128.gstreamer_demo_app
-
-import android.graphics.Color
-import android.os.Bundle
-import android.util.DisplayMetrics
-import android.util.Log
-import android.view.LayoutInflater
-import android.view.View
-import android.view.ViewGroup
-import androidx.fragment.app.Fragment
-import androidx.gridlayout.widget.GridLayout
-import com.hisharp.gstreamer_player.GstCallback
-import com.hisharp.gstreamer_player.GstLibrary
-import com.hisharp.gstreamer_player.GstStatus
-import com.ray650128.gstreamer_demo_app.databinding.FragmentGridVideoBinding
-import kotlin.math.sqrt
-
-
-class GridVideoFragment : Fragment(), GstCallback {
-
-    private var mPageNum: Int = 0
-    private var splitMode = 0
-    private var streamType = STREAM_SUB
-    private var isClickable = true
-
-    private var data: ArrayList<String> = ArrayList()
-
-    private lateinit var binding: FragmentGridVideoBinding
-
-    private var gstPlayers: ArrayList<GstLibrary?> = ArrayList()
-
-    private var videoViews: ArrayList<VideoView> = ArrayList()
-
-    override fun onCreate(savedInstanceState: Bundle?) {
-        super.onCreate(savedInstanceState)
-
-        if (arguments != null) {
-            mPageNum = requireArguments().getInt(ARG_PAGE_NUM)
-            splitMode = requireArguments().getInt(ARG_SPLIT_MODE)
-            isClickable = requireArguments().getBoolean(ARG_CLICKABLE)
-            streamType = requireArguments().getInt(ARG_STREAM_TYPE)
-            data = requireArguments().getStringArrayList(ARG_STREAM_URLS) ?: arrayListOf()
-        }
-    }
-
-    override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View {
-        binding = FragmentGridVideoBinding.inflate(inflater, container, false)
-        return binding.root
-    }
-
-    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
-        super.onViewCreated(view, savedInstanceState)
-
-        initView()
-    }
-
-    override fun onPause() {
-        stopAll()
-        super.onPause()
-        Log.d("${TAG}_$mPageNum", "onPause()")
-    }
-
-    override fun onResume() {
-        super.onResume()
-        playAll()
-        Log.d("${TAG}_$mPageNum", "onResume()")
-    }
-
-    override fun onStop() {
-        super.onStop()
-        Log.d("${TAG}_$mPageNum", "onStop()")
-    }
-
-    override fun onStart() {
-        super.onStart()
-        Log.d("${TAG}_$mPageNum", "onStart()")
-    }
-
-    override fun onDestroyView() {
-        Log.d("${TAG}_$mPageNum", "onDestroyView()")
-        super.onDestroyView()
-    }
-
-    override fun onDestroy() {
-        for (i in gstPlayers.indices) {
-            gstPlayers[i]?.release()
-            gstPlayers[i] = null
-        }
-        Log.d("${TAG}_$mPageNum", "onDestroy()")
-        super.onDestroy()
-    }
-
-    private fun initView() {
-        val maxRow = sqrt(splitMode.toFloat()).toInt()
-        val maxCol = sqrt(splitMode.toFloat()).toInt()
-
-        val displayMetrics = DisplayMetrics()
-        requireActivity().windowManager.defaultDisplay.getMetrics(displayMetrics)
-        val screenWidth = displayMetrics.widthPixels
-
-        val cellWidth = when (splitMode) {
-            1 -> (screenWidth / maxRow)
-            else -> (screenWidth / maxRow) - maxRow.dp
-        }
-
-        val cellHeight = (cellWidth * (0.62)).toInt()
-        Log.e(TAG, "cellWidth: $cellWidth, cellHeight: $cellHeight")
-
-        // 生成 VideoView 分割畫面
-        binding.apply {
-            baseView.rowCount = maxRow
-            baseView.columnCount = maxCol
-
-            for (col in 0 until maxCol) {
-                for (row in 0 until maxRow) {
-                    val videoView = VideoView(requireContext()).apply {
-                        layoutParams = GridLayout.LayoutParams().apply {
-                            height = cellHeight
-                            width = cellWidth
-
-                            topMargin = 0.dp
-                            bottomMargin = 0.dp
-                            marginEnd = 0.dp
-                            marginStart = 0.dp
-
-                            // 調整間距
-                            when (splitMode) {
-                                4 -> {
-                                    when (col) {
-                                        0 -> bottomMargin = 2.dp
-                                        1 -> topMargin = 2.dp
-                                    }
-                                    when (row) {
-                                        0 -> marginEnd = 2.dp
-                                        1 -> marginStart = 2.dp
-                                    }
-                                }
-                                9 -> {
-                                    if (col == 1) {
-                                        topMargin = 4.dp
-                                        bottomMargin = 4.dp
-                                    }
-                                    if (row == 1) {
-                                        marginEnd = 4.dp
-                                        marginStart = 4.dp
-                                    }
-                                }
-                            }
-                        }
-                    }
-                    baseView.addView(videoView)
-                    videoViews.add(videoView)
-                }
-            }
-        }
-
-        for (index in videoViews.indices) {
-            gstPlayers.add(GstLibrary(requireContext(), data[index]))
-            gstPlayers[index]?.setSurfaceView(videoViews[index].videoView)
-            gstPlayers[index]?.setOnStatusChangeListener(this)
-        }
-    }
-
-    private fun playAll() {
-        for (index in data.indices) {
-            gstPlayers[index]?.apply {
-                play()
-            }
-        }
-    }
-
-    private fun stopAll() {
-        for (index in data.indices) {
-            try {
-                gstPlayers[index]?.stop()
-            } catch (e: IllegalStateException) {
-                e.printStackTrace()
-            }
-        }
-    }
-
-    override fun onStatus(gstInstance: GstLibrary, gstStatus: GstStatus?) {
-        val index = gstPlayers.indexOf(gstInstance)
-        when (gstStatus) {
-            GstStatus.PAUSE -> videoViews[index].isPlaying = false
-            GstStatus.PLAYING -> videoViews[index].isPlaying = true
-            else -> {}
-        }
-        Log.d("${TAG}_$mPageNum", "GstPlayer #$index status: $gstStatus")
-    }
-
-    override fun onMessage(gstInstance: GstLibrary, message: String?) {
-        val index = gstPlayers.indexOf(gstInstance)
-        Log.d("${TAG}_$mPageNum", "GstPlayer #$index: $message")
-    }
-
-    companion object {
-        private val TAG = GridVideoFragment::class.java.simpleName
-        private const val ARG_PAGE_NUM = "page_number"
-        private const val ARG_SPLIT_MODE = "split_mode"
-        private const val ARG_CLICKABLE = "clickable"
-        private const val ARG_STREAM_TYPE = "stream_type"
-        private const val ARG_STREAM_URLS = "stream_urls"
-
-        const val STREAM_MAIN = 1
-        const val STREAM_SUB = 2
-
-        /**
-         * 透過傳入的參數，生成新的 Fragment 實例
-         *
-         * @param pageNumber 該 Fragment 頁碼
-         * @param splitMode 畫面分割模式(9/4/1分割)
-         * @return 透過傳入的參數，生成新的 Fragment 實例
-         */
-        fun newInstance(pageNumber: Int, splitMode: Int, streamUrls: ArrayList<String>, isClickable: Boolean = true, streamType: Int = STREAM_SUB): GridVideoFragment {
-            val fragment = GridVideoFragment()
-            val args = Bundle()
-            args.putInt(ARG_PAGE_NUM, pageNumber)
-            args.putInt(ARG_SPLIT_MODE, splitMode)
-            args.putBoolean(ARG_CLICKABLE, isClickable)
-            args.putInt(ARG_STREAM_TYPE, streamType)
-            args.putStringArrayList(ARG_STREAM_URLS, streamUrls)
-            fragment.arguments = args
-            return fragment
-        }
-    }
-}

app/src/main/java/com/ray650128/gstreamer_demo_app/MainActivity.kt

@@ -1,80 +0,0 @@
-package com.ray650128.gstreamer_demo_app
-
-import android.annotation.SuppressLint
-import android.graphics.Color
-import androidx.appcompat.app.AppCompatActivity
-import com.hisharp.gstreamer_player.GstCallback
-import com.ray650128.gstreamer_demo_app.MainActivity
-import com.hisharp.gstreamer_player.GstLibrary
-import com.hisharp.gstreamer_player.GStreamerSurfaceView
-import android.os.Bundle
-import android.util.Log
-import android.view.View
-import android.view.WindowManager
-import com.hisharp.gstreamer_player.GstStatus
-import com.ray650128.gstreamer_demo_app.databinding.ActivityMainBinding
-import java.util.ArrayList
-import java.util.function.Consumer
-
-class MainActivity : AppCompatActivity() {
-
-    private lateinit var binding: ActivityMainBinding
-
-    private lateinit var splitVideoViewAdapter: ViewPager2Adapter
-
-    @SuppressLint("AuthLeak")
-    private val defaultMediaUris = arrayListOf(
-        arrayListOf(
-            "rtsp://admin:admin@211.23.78.226:8574/v02",
-            "rtsp://admin:admin@211.23.78.226:8575/v02",
-            "rtsp://admin:admin@192.168.0.77:554/media/video2",
-            "rtsp://admin:123456@192.168.0.80:554/profile2",
-            "rtsp://admin:123456@192.168.0.83:554/profile2",
-            "rtsp://admin:123456@192.168.0.84:554/profile2",
-            "rtsp://admin:admin@192.168.0.86:554/v2",
-            "rtsp://admin:admin@192.168.0.89:554/v02",
-            "rtsp://admin:1q2w3e4r!@60.249.32.50:554/unicast/c8/s1/live",
-        ),
-        arrayListOf(
-            "rtsp://admin:1q2w3e4r!@60.249.32.50:554/unicast/c1/s1/live",
-            "rtsp://admin:1q2w3e4r!@60.249.32.50:554/unicast/c2/s1/live",
-            "rtsp://admin:1q2w3e4r!@60.249.32.50:554/unicast/c3/s1/live",
-            "rtsp://admin:1q2w3e4r!@60.249.32.50:554/unicast/c4/s1/live",
-            "rtsp://admin:1q2w3e4r!@60.249.32.50:554/unicast/c5/s1/live",
-            "rtsp://admin:1q2w3e4r!@60.249.32.50:554/unicast/c6/s1/live",
-            "rtsp://admin:1q2w3e4r!@60.249.32.50:554/unicast/c7/s1/live",
-            "rtsp://admin:1q2w3e4r!@60.249.32.50:554/unicast/c8/s1/live",
-            "rtsp://admin:1q2w3e4r!@60.249.32.50:554/unicast/c9/s1/live"
-        )
-    )
-
-    override fun onCreate(savedInstanceState: Bundle?) {
-        window.addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON)
-        super.onCreate(savedInstanceState)
-        binding = ActivityMainBinding.inflate(layoutInflater)
-        setContentView(binding.root)
-
-        splitVideoViewAdapter = ViewPager2Adapter(supportFragmentManager, lifecycle)
-
-        binding.viewPager.apply {
-            adapter = splitVideoViewAdapter
-            offscreenPageLimit = 1
-        }
-
-        reloadVideoViews()
-    }
-
-    private fun reloadVideoViews() {
-        splitVideoViewAdapter.clear()
-
-        for (index in defaultMediaUris.indices) {
-            val gridFragment = GridVideoFragment.newInstance(index, 9, defaultMediaUris[index])
-            splitVideoViewAdapter.add(index, gridFragment)
-        }
-    }
-
-
-    companion object {
-        private val TAG = MainActivity::class.java.simpleName
-    }
-}

app/src/main/java/com/ray650128/gstreamer_demo_app/MyApplication.kt

@@ -0,0 +1,49 @@
+package com.ray650128.gstreamer_demo_app
+
+import android.app.Activity
+import android.app.Application
+import android.content.Context
+import android.os.Bundle
+import android.util.Log
+import kotlin.system.exitProcess
+
+class MyApplication : Application(), Application.ActivityLifecycleCallbacks {
+
+    override fun onCreate() {
+        super.onCreate()
+        instance = this
+        registerActivityLifecycleCallbacks(this)
+    }
+
+    private var currentActivity: Activity? = null
+
+    override fun onActivityCreated(p0: Activity, p1: Bundle?) {}
+
+    override fun onActivityStarted(p0: Activity) {}
+
+    override fun onActivityResumed(p0: Activity) {
+        currentActivity = p0
+    }
+
+    override fun onActivityPaused(p0: Activity) {}
+
+    override fun onActivityStopped(p0: Activity) {}
+
+    override fun onActivitySaveInstanceState(p0: Activity, p1: Bundle) {}
+
+    override fun onActivityDestroyed(p0: Activity) {
+        if (currentActivity?.equals(p0) == true) {
+            Log.e("MyApplication", "EXIT...")
+            onTerminate()
+            exitProcess(0)
+        }
+    }
+
+    companion object {
+        var instance: Application? = null
+
+        fun getAppContext(): Context {
+            return instance!!.applicationContext
+        }
+    }
+}

app/src/main/java/com/ray650128/gstreamer_demo_app/PreferenceUtil.kt

@@ -0,0 +1,24 @@
+package com.ray650128.gstreamer_demo_app
+
+import android.content.Context
+import com.ray650128.gstreamer_demo_app.ui.mainScreen.MainViewModel
+
+/**
+ * Shared Preferences 工具類別
+ * @author Raymond Yang
+ */
+object PreferenceUtil {
+    private const val MAIN_KEY = "GST_DEMO_APP"
+    private const val IS_FIRST_OPEN_KEY = "IS_FIRST_OPEN_KEY"
+    private const val LAST_SPLIT_MODE = "LAST_SPLIT_MODE"
+
+    private val sharedPreferences = MyApplication.getAppContext().getSharedPreferences(MAIN_KEY, Context.MODE_PRIVATE)
+
+    var isFirstOpen: Boolean
+        get() = sharedPreferences.getBoolean(IS_FIRST_OPEN_KEY, true)
+        set(value) = sharedPreferences.edit().putBoolean(IS_FIRST_OPEN_KEY, value).apply()
+
+    var lastSplitMode: Int
+        get() = sharedPreferences.getInt(LAST_SPLIT_MODE, MainViewModel.PAGE_MODE_ONE)
+        set(value) = sharedPreferences.edit().putInt(LAST_SPLIT_MODE, value).apply()
+}

app/src/main/java/com/ray650128/gstreamer_demo_app/VideoView.kt

@@ -1,58 +0,0 @@
-package com.ray650128.gstreamer_demo_app
-
-import android.content.Context
-import android.util.AttributeSet
-import android.util.Log
-import android.view.LayoutInflater
-import androidx.constraintlayout.widget.ConstraintLayout
-import androidx.core.view.isVisible
-import com.hisharp.gstreamer_player.GStreamerSurfaceView
-import com.ray650128.gstreamer_demo_app.databinding.ItemVideoViewBinding
-
-class VideoView : ConstraintLayout {
-
-    constructor(context: Context) : super(context) {
-        initView(context)
-    }
-
-    constructor(context: Context, attributeSet: AttributeSet) : super(context, attributeSet) {
-        initView(context)
-    }
-
-    constructor(context: Context, attributeSet: AttributeSet, intRes: Int) : super(context, attributeSet, intRes) {
-        initView(context)
-    }
-
-    private lateinit var view: ItemVideoViewBinding
-
-    //private var data: Device? = null
-
-    var isPlaying: Boolean = false
-        set(value) {
-            view.imgPause.isVisible = !value
-            field = value
-        }
-
-    val videoView: GStreamerSurfaceView by lazy { view.videoView }
-
-    private fun initView(context: Context) {
-        val layoutInflater = LayoutInflater.from(context)
-        view = ItemVideoViewBinding.inflate(layoutInflater, this, true)
-        view.baseView.clipToOutline = true
-    }
-
-    /*fun setData(device: Device?) {
-        if (device == null) {
-            view.textDeviceName.isVisible = false
-            return
-        }
-        this.data = device
-        view.textDeviceName.text = if (device.channelId == -1) device.deviceName else device.channelName
-        view.textDeviceName.isVisible = true
-        Log.d(TAG, "Set device to: $device")
-    }*/
-
-    companion object {
-        private val TAG = VideoView::class.java.simpleName
-    }
-}

app/src/main/java/com/ray650128/gstreamer_demo_app/extensions/DeviceExtension.kt

@@ -0,0 +1,55 @@
+package com.ray650128.gstreamer_demo_app.extensions
+
+import android.util.Log
+import com.ray650128.gstreamer_demo_app.model.Device
+
+/**
+ * IpCam 擴充函式-取得完整串流路徑
+ * @param streamPathNum 串流路徑編號
+ * @author Raymond Yang
+ */
+fun Device.getStreamPath(streamPathNum: Int): String? {
+    val stringBuilder = getPath(this) ?: return null
+
+    // 加入串流路徑
+    when (streamPathNum) {
+        1 -> if (this.stream1.isNotEmpty()) {
+            if (this.stream1.first() != '/') {
+                stringBuilder.append("/")
+            }
+            stringBuilder.append(this.stream1)
+        }
+        2 -> if (this.stream2.isNotEmpty()) {
+            if (this.stream2.first() != '/') {
+                stringBuilder.append("/")
+            }
+            stringBuilder.append(this.stream2)
+        }
+        else -> return null
+    }
+    Log.d("+++URL", stringBuilder.toString())
+    return stringBuilder.toString()
+}
+
+private fun getPath(ipCam: Device): StringBuilder? {
+    if (ipCam.ip.isEmpty()) return null
+    val stringBuilder = StringBuilder()
+    // 加入 URL schema
+    stringBuilder.append("rtsp://")
+
+    // 加入帳號密碼
+    if (ipCam.account.isNotEmpty()) {
+        if (ipCam.password.isEmpty()) {
+            stringBuilder.append("${ipCam.account}@")
+        } else {
+            stringBuilder.append("${ipCam.account}:${ipCam.password}@")
+        }
+    }
+
+    // 加入 IP 及 port
+    stringBuilder.append(ipCam.ip)
+    if (ipCam.rtspPort.isNotEmpty()) {
+        stringBuilder.append(":${ipCam.rtspPort}")
+    }
+    return stringBuilder
+}

app/src/main/java/com/ray650128/gstreamer_demo_app/model/Device.kt

@@ -0,0 +1,17 @@
+package com.ray650128.gstreamer_demo_app.model
+
+import android.os.Parcelable
+import kotlinx.parcelize.Parcelize
+
+@Parcelize
+data class Device(
+    var ip: String = "",
+    var rtspPort: String = "",
+    val deviceName: String = "",
+    var account: String = "",
+    var password: String = "",
+    var stream1: String = "",
+    var stream2: String = "",
+    //val rtspUrl: String = "",
+    var isPlaying: Boolean = false
+): Parcelable

app/src/main/java/com/ray650128/gstreamer_demo_app/ui/mainScreen/MainActivity.kt

@@ -0,0 +1,164 @@
+package com.ray650128.gstreamer_demo_app.ui.mainScreen
+
+import android.content.Context
+import android.graphics.Color
+import android.os.Bundle
+import android.util.Log
+import android.view.WindowManager
+import androidx.activity.viewModels
+import androidx.appcompat.app.AppCompatActivity
+import androidx.viewpager2.widget.ViewPager2
+import com.ray650128.gstreamer_demo_app.Constants
+import com.ray650128.gstreamer_demo_app.R
+import com.ray650128.gstreamer_demo_app.databinding.ActivityMainBinding
+import com.ray650128.gstreamer_demo_app.model.Device
+import kotlinx.coroutines.MainScope
+import kotlinx.coroutines.delay
+import kotlinx.coroutines.launch
+
+class MainActivity : AppCompatActivity() {
+
+    private lateinit var binding: ActivityMainBinding
+
+    private val viewModel: MainViewModel by viewModels()
+
+    private val splitViewModel: SplitViewModel by viewModels()
+
+    private val mContext: Context by lazy { this }
+
+    private var splitMode = 1
+    private var oldSplitMode = 1
+
+    private lateinit var splitVideoViewAdapter: VideoViewAdapter
+
+    private var videos: List<List<Device>>? = null
+
+    private var currentPage = 0
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        window.addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON)
+        super.onCreate(savedInstanceState)
+
+        binding = ActivityMainBinding.inflate(layoutInflater)
+        setContentView(binding.root)
+
+        initContentView()
+
+        initObservers()
+    }
+
+    override fun onBackPressed() {
+        super.onBackPressed()
+        finish()
+    }
+
+    override fun onDestroy() {
+        for (i in 0 until splitVideoViewAdapter.itemCount) {
+            splitVideoViewAdapter.destroy(i)
+        }
+        super.onDestroy()
+    }
+
+    private fun initContentView() = binding.apply {
+        //region Content area
+        splitVideoViewAdapter = VideoViewAdapter(supportFragmentManager, lifecycle)
+
+        viewPager.apply {
+            adapter = splitVideoViewAdapter
+            offscreenPageLimit = 100
+            setPageTransformer(null)
+            registerOnPageChangeCallback(object: ViewPager2.OnPageChangeCallback() {
+                private var oldPage = 0
+                override fun onPageScrollStateChanged(state: Int) {
+                    super.onPageScrollStateChanged(state)
+                    /*if (state == ViewPager2.SCROLL_STATE_DRAGGING) {
+                        oldPage = currentPage
+                        splitVideoViewAdapter.stop(currentPage)
+                    }
+                    if (state == ViewPager2.SCROLL_STATE_IDLE && currentPage == oldPage) {
+                        splitVideoViewAdapter.play(currentPage)
+                    }*/
+                    //Log.d("Split", "oldPage: $oldPage, currentPage: $currentPage")
+                }
+                override fun onPageScrolled(
+                    position: Int,
+                    positionOffset: Float,
+                    positionOffsetPixels: Int
+                ) {
+                    super.onPageScrolled(position, positionOffset, positionOffsetPixels)
+                    //Log.d("Split", "onPageScrolled: $currentPage")
+                }
+                override fun onPageSelected(position: Int) {
+                    super.onPageSelected(position)
+                    currentPage = position
+                    splitViewModel.activePage.postValue(position)
+                    //Log.d("Split", "currentPage: $currentPage")
+                }
+            })
+        }
+
+        button.setOnClickListener {
+            if (splitMode == MainViewModel.PAGE_MODE_ONE) return@setOnClickListener
+            viewModel.setSplitMode(MainViewModel.PAGE_MODE_ONE)
+            Log.e(TAG, "+++ split style: 1")
+        }
+
+        button2.setOnClickListener {
+            if (splitMode == MainViewModel.PAGE_MODE_FOUR) return@setOnClickListener
+            viewModel.setSplitMode(MainViewModel.PAGE_MODE_FOUR)
+            Log.e(TAG, "+++ split style: 4")
+        }
+
+        button3.setOnClickListener {
+            if (splitMode == MainViewModel.PAGE_MODE_NINE) return@setOnClickListener
+            viewModel.setSplitMode(MainViewModel.PAGE_MODE_NINE)
+            Log.e(TAG, "+++ split style: 9")
+        }
+        //endregion
+    }
+
+    private fun initObservers() {
+        viewModel.splitMode.observe(this) {
+            splitMode = it
+            Log.e(TAG, "Split count: $it")
+        }
+
+        viewModel.cameraList.observe(this) { list ->
+            this.videos = list
+            reloadVideoViews(this.videos)
+            currentPage = 0
+        }
+    }
+
+    private fun reloadVideoViews(list: List<List<Device>>?) = MainScope().launch {
+        binding.viewPager.setCurrentItem(0, false)
+        for (i in 0 until splitVideoViewAdapter.itemCount) {
+            splitVideoViewAdapter.stop(i)
+        }
+        //delay(oldSplitMode * Constants.CONF_DELAY_BASE_MILLIS)
+        delay((oldSplitMode * 100) + Constants.CONF_DELAY_BASE_MILLIS)
+        oldSplitMode = splitMode
+        splitVideoViewAdapter.clear()
+        // 如果群組內沒有裝置，則顯示底圖
+        if (list.isNullOrEmpty()) {
+            binding.viewPager.setBackgroundResource(R.drawable.bg_not_in_playing)
+        } else {
+            binding.viewPager.setBackgroundColor(Color.TRANSPARENT)
+            for (i in list.indices) {
+                val splitFragment = SplitViewFragment.newInstance(
+                    pageNumber = i,
+                    splitMode = splitMode,
+                    pageData = ArrayList(list[i])
+                )
+                splitVideoViewAdapter.add(i, splitFragment)
+            }
+            currentPage = 0
+            //binding.viewPager.currentItem = 0
+        }
+    }
+
+
+    companion object {
+        private val TAG = MainActivity::class.java.simpleName
+    }
+}

app/src/main/java/com/ray650128/gstreamer_demo_app/ui/mainScreen/MainViewModel.kt

@@ -0,0 +1,146 @@
+package com.ray650128.gstreamer_demo_app.ui.mainScreen
+
+import androidx.lifecycle.MediatorLiveData
+import androidx.lifecycle.MutableLiveData
+import androidx.lifecycle.ViewModel
+import com.ray650128.gstreamer_demo_app.PreferenceUtil
+import com.ray650128.gstreamer_demo_app.model.Device
+
+class MainViewModel: ViewModel() {
+
+    private val uriList: List<Device> by lazy {
+        listOf(
+            Device(
+                deviceName = "192.168.0.77",
+                ip = "192.168.0.77",
+                rtspPort = "554",
+                account = "admin",
+                password = "admin",
+                stream1 = "/media/video1",
+                stream2 = "/media/video2",
+            ),
+            Device(
+                deviceName = "192.168.0.73",
+                ip = "192.168.0.73",
+                rtspPort = "554",
+                account = "admin",
+                password = "hs22601576",
+                stream1 = "/media/video1",
+                stream2 = "/media/video2",
+            ),
+            Device(
+                deviceName = "192.168.0.79",
+                ip = "192.168.0.79",
+                rtspPort = "554",
+                account = "admin",
+                password = "1q2w3e4r!",
+                stream1 = "/media/video1",
+                stream2 = "/media/video2",
+            ),
+            Device(
+                deviceName = "192.168.0.88",
+                ip = "211.23.78.226",
+                rtspPort = "8588",
+                account = "admin",
+                password = "1q2w3e4r~",
+                stream1 = "/media/video1",
+                stream2 = "/media/video2",
+            ),
+            Device(
+                deviceName = "192.168.0.74",
+                ip = "211.23.78.226",
+                rtspPort = "8574",
+                account = "admin",
+                password = "admin",
+                stream1 = "/v01",
+                stream2 = "/v02",
+            ),
+            Device(
+                deviceName = "192.168.0.75",
+                ip = "211.23.78.226",
+                rtspPort = "8575",
+                account = "admin",
+                password = "admin",
+                stream1 = "/v01",
+                stream2 = "/v02",
+            ),
+            Device(
+                deviceName = "192.168.0.76",
+                ip = "211.23.78.226",
+                rtspPort = "8576",
+                account = "admin",
+                password = "123456",
+                stream1 = "/profile1",
+                stream2 = "/profile2",
+            ),
+            Device(
+                deviceName = "192.168.0.82",
+                ip = "192.168.0.82",
+                rtspPort = "554",
+                account = "admin",
+                password = "123456",
+                stream1 = "/profile1",
+                stream2 = "/profile2",
+            ),
+            Device(
+                deviceName = "192.168.0.84",
+                ip = "192.168.0.84",
+                rtspPort = "554",
+                account = "admin",
+                password = "123456",
+                stream1 = "/profile1",
+                stream2 = "/profile2",
+            ),
+            Device(
+                deviceName = "192.168.0.95",
+                ip = "192.168.0.95",
+                rtspPort = "554",
+                account = "admin",
+                password = "123456",
+                stream1 = "/profile1",
+                stream2 = "/profile2",
+            )
+        )
+    }
+
+    val splitMode: MutableLiveData<Int> by lazy { MutableLiveData<Int>() }
+
+    val cameraList: MediatorLiveData<List<List<Device>>> by lazy {
+        MediatorLiveData<List<List<Device>>>().apply {
+            addSource(splitMode) {
+                postValue(updateCameraList(uriList))
+            }
+        }
+    }
+
+    init {
+        splitMode.postValue(PreferenceUtil.lastSplitMode)
+    }
+
+    fun setSplitMode(mode: Int) {
+        PreferenceUtil.lastSplitMode = mode
+        splitMode.postValue(PreferenceUtil.lastSplitMode)
+    }
+
+    private fun updateCameraList(dbData: List<Device>?): List<List<Device>>? {
+        if (dbData.isNullOrEmpty()) return null
+        val tmpData = ArrayList<List<Device>>()
+        for (index in uriList.indices step (PreferenceUtil.lastSplitMode)) {
+            if (index == uriList.size) break
+            val tmpSubData = ArrayList<Device>()
+            for (subIndex in 0 until (PreferenceUtil.lastSplitMode)) {
+                val dataIndex = index + subIndex
+                if (dataIndex !in uriList.indices) break
+                tmpSubData.add(uriList[dataIndex])
+            }
+            tmpData.add(tmpSubData)
+        }
+        return tmpData
+    }
+
+    companion object {
+        const val PAGE_MODE_ONE = 1
+        const val PAGE_MODE_FOUR = 4
+        const val PAGE_MODE_NINE = 9
+    }
+}

app/src/main/java/com/ray650128/gstreamer_demo_app/ui/mainScreen/SplitViewFragment.kt

@@ -0,0 +1,255 @@
+package com.ray650128.gstreamer_demo_app.ui.mainScreen
+
+import android.content.Intent
+import android.os.Bundle
+import android.util.Log
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import androidx.fragment.app.Fragment
+import androidx.fragment.app.activityViewModels
+import androidx.gridlayout.widget.GridLayout
+import com.ray650128.gstreamer_demo_app.Constants
+import com.ray650128.gstreamer_demo_app.databinding.FragmentSplitViewBinding
+import com.ray650128.gstreamer_demo_app.dp
+import com.ray650128.gstreamer_demo_app.model.Device
+import com.ray650128.gstreamer_demo_app.ui.monitoringScreen.MonitoringActivity
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.MainScope
+import kotlinx.coroutines.delay
+import kotlinx.coroutines.launch
+import kotlin.math.sqrt
+
+class SplitViewFragment : Fragment() {
+
+    val viewModel: SplitViewModel by activityViewModels()
+
+    private var mPageNum: Int = 0
+    private var splitMode = MainViewModel.PAGE_MODE_ONE
+    private var streamType = VideoView.SUB_STREAM
+    private var isClickable = true
+
+    private lateinit var binding: FragmentSplitViewBinding
+
+    private var data: ArrayList<Device> = ArrayList()
+
+    private var videoViews: ArrayList<VideoView> = ArrayList()
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+
+        if (arguments != null) {
+            mPageNum = requireArguments().getInt(ARG_PAGE_NUM)
+            splitMode = requireArguments().getInt(ARG_SPLIT_MODE)
+            isClickable = requireArguments().getBoolean(ARG_CLICKABLE)
+            streamType = requireArguments().getInt(ARG_STREAM_TYPE)
+            data = requireArguments().getParcelableArrayList(ARG_PAGE_DATA) ?: arrayListOf(Device())
+        }
+    }
+
+    override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View {
+        binding = FragmentSplitViewBinding.inflate(inflater, container, false)
+        return binding.root
+    }
+
+    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
+        super.onViewCreated(view, savedInstanceState)
+
+        initView()
+
+        /*viewModel.activePage.observe(viewLifecycleOwner) {
+            if (it == null) return@observe
+            if (it == this.mPageNum) {
+                MainScope().launch {
+                    //delay(1000)
+                    //playAll()
+                }
+            } else {
+                //stopAll()
+            }
+        }*/
+    }
+
+    override fun onPause() {
+        stopAll()
+        super.onPause()
+        Log.d("${TAG}_$mPageNum", "onPause()")
+    }
+
+    override fun onResume() {
+        super.onResume()
+        playAll()
+        Log.d("${TAG}_$mPageNum", "onResume()")
+    }
+
+    override fun onDestroy() {
+        super.onDestroy()
+        //destroyAll()
+        stopAll()
+        Log.d("${TAG}_$mPageNum", "onDestroy()")
+    }
+
+    private fun initView() {
+        // 生成 VideoView 分割畫面
+        binding.apply {
+            val maxRow = sqrt(splitMode.toFloat()).toInt()
+            val maxCol = sqrt(splitMode.toFloat()).toInt()
+            //Log.d(TAG, "maxRow: $maxRow, maxCol: $maxCol")
+
+            baseView.rowCount = maxRow
+            baseView.columnCount = maxCol
+            Log.e("${TAG}_$mPageNum", "baseView.rowCount: ${baseView.rowCount}, baseView.columnCount: ${baseView.columnCount}")
+
+            baseView.post {
+                for (col in 0 until maxCol) {
+                    for (row in 0 until maxRow) {
+                        val videoView = VideoView(requireContext())
+                        val layoutParam = GridLayout.LayoutParams().apply {
+                            topMargin = 0.dp
+                            bottomMargin = 0.dp
+                            marginEnd = 0.dp
+                            marginStart = 0.dp
+
+                            // 調整間距
+                            when (splitMode) {
+                                MainViewModel.PAGE_MODE_FOUR -> {
+                                    when (col) {
+                                        0 -> bottomMargin = 2.dp
+                                        1 -> topMargin = 2.dp
+                                    }
+                                    when (row) {
+                                        0 -> marginEnd = 2.dp
+                                        1 -> marginStart = 2.dp
+                                    }
+                                    width = (baseView.width / maxRow) - maxRow.dp
+                                    height = (baseView.height / maxCol) - maxCol.dp
+                                }
+                                MainViewModel.PAGE_MODE_NINE -> {
+                                    if (col == 1) {
+                                        topMargin = 4.dp
+                                        bottomMargin = 4.dp
+                                    }
+                                    if (row == 1) {
+                                        marginEnd = 4.dp
+                                        marginStart = 4.dp
+                                    }
+                                    width = (baseView.width / maxRow) - maxRow.dp
+                                    height = (baseView.height / maxCol) - maxCol.dp
+                                }
+                                MainViewModel.PAGE_MODE_ONE -> {
+                                    width = (baseView.width / maxRow)
+                                    height = (baseView.height / maxCol)
+                                }
+                            }
+                        }
+                        baseView.addView(videoView, layoutParam)
+                        videoViews.add(videoView)
+                    }
+                }
+
+                setAllUrl()
+
+                if (isClickable) {
+                    for (position in videoViews.indices) {
+                        videoViews[position].setOnClickListener {
+                            if (position >= data.size) return@setOnClickListener
+                            if (!videoViews[position].isPlaying) {
+                                if (!videoViews[position].isLoading) {
+                                    videoViews[position].resetRetryCount()
+                                    videoViews[position].play()
+                                }
+                                return@setOnClickListener
+                            }
+                            MainScope().launch {
+                                stopAll()
+                                delay(splitMode * Constants.CONF_DELAY_BASE_MILLIS)
+                                //delay((splitMode * 100) + Constants.CONF_DELAY_BASE_MILLIS)
+                                val item = data[position]
+                                val bundle = Bundle().apply {
+                                    //putInt(MonitoringActivity.BUNDLE_DEVICE_ID, item.id)
+                                    //putInt(MonitoringActivity.BUNDLE_CHANNEL_ID, item.channelId)
+                                    putParcelable(MonitoringActivity.BUNDLE_DEVICE, item)
+                                }
+                                val intent = Intent(requireContext(), MonitoringActivity::class.java)
+                                intent.putExtras(bundle)
+                                startActivity(intent)
+                                //gotoActivity(MonitoringActivity::class.java, bundle)*/
+                                //Log.d("${TAG}_$mPageNum", "check: $item")
+                            }
+                        }
+                    }
+                }
+            }
+        }
+    }
+
+    private fun setAllUrl() {
+        for (index in data.indices) {
+            videoViews[index].setData(data[index])
+            videoViews[index].setTextVisible((splitMode != MainViewModel.PAGE_MODE_NINE))
+        }
+    }
+
+    fun playAll() = MainScope().launch(Dispatchers.Main) {
+        if (videoViews.isEmpty()) return@launch
+        delay(splitMode * Constants.CONF_DELAY_BASE_MILLIS)
+        for (index in data.indices) {
+            if (!videoViews[index].isReady) continue
+            videoViews[index].resetRetryCount()
+            videoViews[index].play()
+            //delay(300)
+        }
+    }.start()
+
+    fun stopAll() = MainScope().launch(Dispatchers.Main) {
+        if (videoViews.isEmpty()) return@launch
+        for (index in data.indices) {
+            videoViews[index].stopRetryCount()
+            if (!videoViews[index].isPlaying || videoViews[index].isLoading) continue
+            videoViews[index].stop()
+            //delay(300)
+        }
+    }.start()
+
+    fun destroyAll() /*= MainScope().launch(Dispatchers.Main)*/ {
+        if (videoViews.isEmpty()) return
+        for (index in data.indices) {
+            videoViews[index].destroy()
+            //delay(100)
+        }
+    }//.start()
+
+    companion object {
+        private val TAG = SplitViewFragment::class.java.simpleName
+        private const val ARG_PAGE_NUM = "page_number"
+        private const val ARG_SPLIT_MODE = "split_mode"
+        private const val ARG_CLICKABLE = "clickable"
+        private const val ARG_PAGE_DATA = "page_data"
+        private const val ARG_STREAM_TYPE = "stream_type"
+
+        /**
+         * 透過傳入的參數，生成新的 Fragment 實例
+         *
+         * @param pageNumber 該 Fragment 頁碼
+         * @param splitMode 畫面分割模式(9/4/1分割)
+         * @return 透過傳入的參數，生成新的 Fragment 實例
+         */
+        fun newInstance(
+            pageNumber: Int,
+            splitMode: Int,
+            isClickable: Boolean = true,
+            pageData: ArrayList<Device>,
+            streamType: Int = VideoView.SUB_STREAM
+        ): SplitViewFragment {
+            val fragment = SplitViewFragment()
+            val args = Bundle()
+            args.putInt(ARG_PAGE_NUM, pageNumber)
+            args.putInt(ARG_SPLIT_MODE, splitMode)
+            args.putBoolean(ARG_CLICKABLE, isClickable)
+            args.putParcelableArrayList(ARG_PAGE_DATA, pageData)
+            args.putInt(ARG_STREAM_TYPE, streamType)
+            fragment.arguments = args
+            return fragment
+        }
+    }
+}

app/src/main/java/com/ray650128/gstreamer_demo_app/ui/mainScreen/SplitViewModel.kt

@@ -0,0 +1,10 @@
+package com.ray650128.gstreamer_demo_app.ui.mainScreen
+
+import androidx.lifecycle.MutableLiveData
+import androidx.lifecycle.ViewModel
+
+class SplitViewModel : ViewModel() {
+    val activePage: MutableLiveData<Int> by lazy {
+        MutableLiveData()
+    }
+}

app/src/main/java/com/ray650128/gstreamer_demo_app/ui/mainScreen/VideoView.kt

@@ -0,0 +1,194 @@
+package com.ray650128.gstreamer_demo_app.ui.mainScreen
+
+import android.content.Context
+import android.os.Handler
+import android.os.Looper
+import android.os.Message
+import android.util.AttributeSet
+import android.util.Log
+import android.view.LayoutInflater
+import android.view.SurfaceHolder
+import android.view.SurfaceView
+import androidx.constraintlayout.widget.ConstraintLayout
+import androidx.core.view.isVisible
+import com.hisharp.gstreamer_player.GstCallback
+import com.hisharp.gstreamer_player.GstLibrary
+import com.hisharp.gstreamer_player.GstStatus
+import com.ray650128.gstreamer_demo_app.databinding.ItemVideoViewBinding
+import com.ray650128.gstreamer_demo_app.extensions.getStreamPath
+import com.ray650128.gstreamer_demo_app.model.Device
+
+class VideoView : ConstraintLayout, GstCallback {
+
+    constructor(context: Context) : super(context) {
+        initView(context)
+    }
+
+    constructor(context: Context, attributeSet: AttributeSet) : super(context, attributeSet) {
+        initView(context)
+    }
+
+    constructor(context: Context, attributeSet: AttributeSet, intRes: Int) : super(context, attributeSet, intRes) {
+        initView(context)
+    }
+
+    private lateinit var view: ItemVideoViewBinding
+
+    private var data: Device? = null
+
+    var isReady: Boolean = false
+
+    var isLoading: Boolean = false
+        set(value) {
+            view.pbLoading.isVisible = value
+            field = value
+        }
+
+    var isPlaying: Boolean = false
+        set(value) {
+            view.imgPause.isVisible = !value
+            field = value
+        }
+
+    private var retryCount = 0
+    private var retryRunnable = object : Runnable {
+        override fun run() {
+            play()
+            //Log.e("${TAG}_$tag", "Retry count: $retryCount")
+        }
+    }
+
+    private val videoView: SurfaceView by lazy { view.videoView }
+
+    private lateinit var gstLibrary: GstLibrary
+
+    private val mHandler: MyHandler by lazy {
+        MyHandler(Looper.getMainLooper())
+    }
+
+    private fun initView(context: Context) {
+        val layoutInflater = LayoutInflater.from(context)
+        view = ItemVideoViewBinding.inflate(layoutInflater, this, true)
+        view.baseView.clipToOutline = true
+
+        //videoView.holder.addCallback(this)
+        gstLibrary = GstLibrary(context)
+        gstLibrary.setSurfaceHolder(videoView.holder)
+        gstLibrary.setOnStatusChangeListener(this)
+
+        // View 預設狀態
+        view.textDeviceName.isVisible = false
+        isPlaying = false
+        isLoading = false
+    }
+
+    fun setData(device: Device?, streamType: Int = SUB_STREAM) {
+        if (device == null) {
+            view.textDeviceName.isVisible = false
+            isPlaying = false
+            isLoading = false
+            return
+        }
+        this.data = device
+        this.tag = device.deviceName
+        view.textDeviceName.text = device.deviceName
+        view.textDeviceName.isVisible = true
+        val rtspUrl = this.data?.getStreamPath(streamType) ?: return    // 如果 null 就不指派給 Gstreamer 了
+        gstLibrary.setTag(this.data!!.deviceName)
+        gstLibrary.setRtspUrl(rtspUrl)
+        Log.d("${TAG}_$tag", "Set device to: $device, rtspUrl = $rtspUrl")
+    }
+
+    fun setTextVisible(isVisible: Boolean) {
+        view.textDeviceName.isVisible = isVisible
+    }
+
+    fun play() {
+        if (data == null) return
+        videoView.postInvalidate()
+        gstLibrary.play()
+    }
+
+    fun stop() {
+        if (data == null) return
+        isPlaying = false
+        if (this::gstLibrary.isInitialized) {
+            gstLibrary.stop()
+        }
+    }
+
+    fun destroy() {
+        if (this::gstLibrary.isInitialized) {
+            gstLibrary.close()
+        }
+    }
+
+    fun resetRetryCount() {
+        retryCount = 0
+    }
+
+    fun stopRetryCount() {
+        retryCount = RETRY_OFF
+        mHandler.removeCallbacks(retryRunnable)
+    }
+
+    override fun onStatus(gstStatus: GstStatus?) {  // onStatus 不是在主執行緒，因此透過 Handler 發訊息到主執行緒去執行
+        when (gstStatus) {
+            GstStatus.READY -> isReady = true
+            GstStatus.PLAYING -> mHandler.sendMessage(Message().apply { what = MSG_PLAY })
+            GstStatus.PAUSE -> mHandler.sendMessage(Message().apply { what = MSG_PAUSE })
+            //GstStatus.ERROR_WHEN_OPENING -> mHandler.sendMessage(Message().apply { what = MSG_PAUSE })
+            GstStatus.BUFFERING -> mHandler.sendMessage(Message().apply { what = MSG_BUFFERING })
+            GstStatus.ERROR_WHEN_OPENING -> mHandler.sendMessage(Message().apply { what = MSG_ERROR })
+            else -> {}
+        }
+        //Log.e("${TAG}_$tag", "onStatus: $gstStatus")
+    }
+
+    override fun onMessage(message: String?) {
+        //Log.e("${TAG}_$tag", "onMessage: $message")
+    }
+
+    inner class MyHandler(looper: Looper): Handler(looper) {
+        override fun handleMessage(msg: Message) {
+            when(msg.what) {
+                MSG_PAUSE -> {
+                    isPlaying = false
+                    isLoading = false
+                }
+                MSG_PLAY -> {
+                    isLoading = false
+                    isPlaying = true
+                    resetRetryCount()
+                }
+                MSG_BUFFERING -> {
+                    isLoading = true
+                    isPlaying = true
+                }
+                MSG_ERROR -> {
+                    if (retryCount != RETRY_OFF && retryCount in 0 until 5) {
+                        mHandler.post(retryRunnable)
+                        retryCount++
+                    } else {
+                        stopRetryCount()
+                        Log.e("${TAG}_$tag", "Retry count = 5, stopped retry...")
+                    }
+                }
+            }
+        }
+    }
+
+    companion object {
+        private val TAG = VideoView::class.java.simpleName
+
+        const val MAIN_STREAM = 1
+        const val SUB_STREAM = 2
+
+        private const val MSG_PAUSE = 1
+        private const val MSG_PLAY = 2
+        private const val MSG_BUFFERING = 3
+        private const val MSG_ERROR = 4
+
+        private const val RETRY_OFF = 999
+    }
+}

app/src/main/java/com/ray650128/gstreamer_demo_app/ui/mainScreen/VideoViewAdapter.kt

@@ -1,31 +1,31 @@
-package com.ray650128.gstreamer_demo_app
+package com.ray650128.gstreamer_demo_app.ui.mainScreen
 
 import android.annotation.SuppressLint
-import androidx.fragment.app.Fragment
 import androidx.fragment.app.FragmentManager
 import androidx.lifecycle.Lifecycle
 import androidx.viewpager2.adapter.FragmentStateAdapter
 
-class ViewPager2Adapter(
+class VideoViewAdapter(
     fragmentManager: FragmentManager,
     lifecycle: Lifecycle
 ) : FragmentStateAdapter(fragmentManager, lifecycle) {
 
-    private var fragments: MutableList<Fragment> = arrayListOf()
+    private var fragments: MutableList<SplitViewFragment> = arrayListOf()
 
     override fun getItemCount(): Int {
         return fragments.size
     }
-    override fun createFragment(position: Int): Fragment {
+
+    override fun createFragment(position: Int): SplitViewFragment {
         return fragments[position]
     }
 
-    fun add(index: Int, fragment: Fragment) {
+    fun add(index: Int, fragment: SplitViewFragment) {
         fragments.add(index, fragment)
         notifyItemChanged(index)
     }
 
-    fun refreshFragment(index: Int, fragment: Fragment) {
+    fun refreshFragment(index: Int, fragment: SplitViewFragment) {
         fragments[index] = fragment
         notifyItemChanged(index)
     }
@@ -41,6 +41,30 @@ class ViewPager2Adapter(
         notifyDataSetChanged()
     }
 
+    fun stop(index: Int) {
+        stop(fragments[index])
+    }
+
+    private fun stop(fragment: SplitViewFragment) {
+        fragment.stopAll()
+    }
+
+    fun play(index: Int) {
+        play(fragments[index])
+    }
+
+    private fun play(fragment: SplitViewFragment) {
+        fragment.playAll()
+    }
+
+    fun destroy(index: Int) {
+        destroy(fragments[index])
+    }
+
+    private fun destroy(fragment: SplitViewFragment) {
+        fragment.destroyAll()
+    }
+
     override fun getItemId(position: Int): Long {
         return fragments[position].hashCode().toLong()
     }

app/src/main/java/com/ray650128/gstreamer_demo_app/ui/monitoringScreen/MonitoringActivity.kt

@@ -0,0 +1,28 @@
+package com.ray650128.gstreamer_demo_app.ui.monitoringScreen
+
+import androidx.appcompat.app.AppCompatActivity
+import android.os.Bundle
+import android.view.WindowManager
+import com.ray650128.gstreamer_demo_app.databinding.ActivityMainBinding
+import com.ray650128.gstreamer_demo_app.databinding.ActivityMonitoringBinding
+
+class MonitoringActivity : AppCompatActivity() {
+
+    private lateinit var binding: ActivityMonitoringBinding
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        window.addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON)
+        super.onCreate(savedInstanceState)
+
+        binding = ActivityMonitoringBinding.inflate(layoutInflater)
+        setContentView(binding.root)
+    }
+
+
+
+    companion object {
+        const val BUNDLE_DEVICE_ID = "BUNDLE_DEVICE_ID"
+        const val BUNDLE_CHANNEL_ID = "BUNDLE_CHANNEL_ID"
+        const val BUNDLE_DEVICE = "BUNDLE_DEVICE"
+    }
+}

app/src/main/res/layout/activity_main.xml

@@ -19,5 +19,40 @@
         tools:layout_conversion_absoluteHeight="0dp"
         tools:layout_conversion_absoluteWidth="411dp" />
 
+    <Button
+        android:id="@+id/button"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_marginStart="16dp"
+        android:layout_marginTop="16dp"
+        android:text="1"
+        app:layout_constraintEnd_toStartOf="@+id/button2"
+        app:layout_constraintHorizontal_bias="0.5"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toBottomOf="@+id/viewPager" />
+
+    <Button
+        android:id="@+id/button2"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="16dp"
+        android:text="4"
+        app:layout_constraintEnd_toStartOf="@+id/button3"
+        app:layout_constraintHorizontal_bias="0.5"
+        app:layout_constraintStart_toEndOf="@+id/button"
+        app:layout_constraintTop_toBottomOf="@+id/viewPager" />
+
+    <Button
+        android:id="@+id/button3"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="16dp"
+        android:layout_marginEnd="16dp"
+        android:text="9"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintHorizontal_bias="0.5"
+        app:layout_constraintStart_toEndOf="@+id/button2"
+        app:layout_constraintTop_toBottomOf="@+id/viewPager" />
+
 
 </androidx.constraintlayout.widget.ConstraintLayout>

app/src/main/res/layout/activity_monitoring.xml

@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    tools:context=".ui.monitoringScreen.MonitoringActivity">
+
+</androidx.constraintlayout.widget.ConstraintLayout>

app/src/main/res/layout/fragment_split_view.xml

@@ -0,0 +1,12 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.gridlayout.widget.GridLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:id="@+id/baseView"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:layout_gravity="center"
+    app:columnCount="3"
+    app:rowCount="3"
+    app:useDefaultMargins="false"
+    tools:context=".ui.mainScreen.SplitViewFragment" />

app/src/main/res/layout/item_video_view.xml

@@ -1,14 +1,13 @@
 <?xml version="1.0" encoding="utf-8"?>
 <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:app="http://schemas.android.com/apk/res-auto"
-    xmlns:tools="http://schemas.android.com/tools"
     android:id="@+id/baseView"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
     android:background="@drawable/bg_video_view"
     android:outlineProvider="background">
 
-    <com.hisharp.gstreamer_player.GStreamerSurfaceView
+    <SurfaceView
         android:id="@+id/videoView"
         android:layout_width="match_parent"
         android:layout_height="match_parent"
@@ -22,6 +21,7 @@
         android:layout_width="0dp"
         android:layout_height="0dp"
         android:scaleType="fitXY"
+        android:visibility="gone"
         app:layout_constraintBottom_toBottomOf="parent"
         app:layout_constraintEnd_toEndOf="parent"
         app:layout_constraintStart_toStartOf="parent"
@@ -34,16 +34,16 @@
         android:layout_height="wrap_content"
         android:layout_marginStart="8dp"
         android:layout_marginBottom="4dp"
-        android:drawableLeft="@drawable/ic_ip_cam_name"
         android:drawablePadding="6dp"
         android:ellipsize="end"
         android:maxLines="1"
-        android:text="TextView"
+        android:text=""
         android:textColor="@android:color/white"
         android:textSize="16sp"
         android:visibility="gone"
-        app:layout_constraintBottom_toBottomOf="@+id/videoView"
+        app:layout_constraintBottom_toBottomOf="parent"
-        app:layout_constraintStart_toStartOf="parent" />
+        app:layout_constraintStart_toStartOf="parent"
+        app:drawableStartCompat="@drawable/ic_ip_cam_name" />
 
     <ProgressBar
         android:id="@+id/pbLoading"
@@ -51,7 +51,7 @@
         android:layout_width="64dp"
         android:layout_height="0dp"
         android:visibility="gone"
-        app:layout_constraintBottom_toBottomOf="@+id/videoView"
+        app:layout_constraintBottom_toBottomOf="parent"
         app:layout_constraintDimensionRatio="h,1:1"
         app:layout_constraintEnd_toEndOf="parent"
         app:layout_constraintStart_toStartOf="parent"

build.gradle

@@ -1,25 +1,16 @@
 // Top-level build file where you can add configuration options common to all sub-projects/modules.
 
 buildscript {
-    ext.kotlin_version = '1.7.10'
     repositories {
-        jcenter()
+        mavenCentral()
-        google()
-    }
-    dependencies {
-        classpath 'com.android.tools.build:gradle:7.1.0'
-        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
-
-        // NOTE: Do not place your application dependencies here; they belong
-        // in the individual module build.gradle files
     }
 }
 
-allprojects {
+plugins {
-    repositories {
+    id 'com.android.application' version '7.4.2' apply false
-        jcenter()
+    id 'com.android.library' version '7.4.2' apply false
-        google()
+    id 'org.jetbrains.kotlin.android' version '1.8.10' apply false
-    }
+    id 'org.jetbrains.kotlin.plugin.parcelize' version '1.7.0' apply false
 }
 
 task clean(type: Delete) {

gradle.properties

@@ -1,2 +1,21 @@
-android.enableJetifier=true
+# Project-wide Gradle settings.
+# IDE (e.g. Android Studio) users:
+# Gradle settings configured through the IDE *will override*
+# any settings specified in this file.
+# For more details on how to configure your build environment visit
+# http://www.gradle.org/docs/current/userguide/build_environment.html
+# Specifies the JVM arguments used for the daemon process.
+# The setting is particularly useful for tweaking memory settings.
+org.gradle.jvmargs=-Xmx2048m -Dfile.encoding=UTF-8
+# When configured, Gradle will run in incubating parallel mode.
+# This option should only be used with decoupled projects. More details, visit
+# http://www.gradle.org/docs/current/userguide/multi_project_builds.html#sec:decoupled_projects
+# org.gradle.parallel=true
+# AndroidX package structure to make it clearer which packages are bundled with the
+# Android operating system, and which are packaged with your app"s APK
+# https://developer.android.com/topic/libraries/support-library/androidx-rn
 android.useAndroidX=true
+# Automatically convert third-party libraries to use AndroidX
+android.enableJetifier=true
+# Kotlin code style for this project: "official" or "obsolete":
+kotlin.code.style=official

gradle/wrapper/gradle-wrapper.properties

@@ -1,6 +1,6 @@
-#Sat Apr 21 19:58:19 WEST 2018
+#Thu Mar 24 14:41:01 CST 2022
 distributionBase=GRADLE_USER_HOME
+distributionUrl=https\://services.gradle.org/distributions/gradle-7.5-bin.zip
 distributionPath=wrapper/dists
-zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-7.3.3-all.zip
+zipStoreBase=GRADLE_USER_HOME

gstreamer_player/build.gradle

@@ -1,13 +1,13 @@
 apply plugin: 'com.android.library'
 
 android {
-    compileSdkVersion 32
+    ndkVersion "21.3.6528147"
+
+    compileSdkVersion 33
 
     defaultConfig {
         minSdkVersion 15
-        targetSdkVersion 32
+        targetSdkVersion 33
-        versionCode 1
-        versionName "1.0"
 
         externalNativeBuild {
             ndkBuild {
@@ -21,7 +21,10 @@ android {
                 if (gstRoot == null)
                     throw new GradleException('GSTREAMER_ROOT_ANDROID must be set, or "gstAndroidRoot" must be defined in your gradle.properties in the top level directory of the unpacked universal GStreamer Android binaries')
 
-                arguments "NDK_APPLICATION_MK=jni/Application.mk", "GSTREAMER_JAVA_SRC_DIR=src", "GSTREAMER_ROOT_ANDROID=$gstRoot", "GSTREAMER_ASSETS_DIR=src/assets"
+                arguments "NDK_APPLICATION_MK=jni/Application.mk",
+                        "GSTREAMER_JAVA_SRC_DIR=src",
+                        "GSTREAMER_ROOT_ANDROID=$gstRoot",
+                        "GSTREAMER_ASSETS_DIR=src/assets"
 
                 targets "gst_player"
 
@@ -65,6 +68,6 @@ afterEvaluate {
 
 dependencies {
     implementation fileTree(dir: 'libs', include: ['*.jar'])
-    testImplementation 'junit:junit:4.12'
+    testImplementation 'junit:junit:4.13.2'
-    implementation 'androidx.appcompat:appcompat:1.0.0'
+    //implementation 'androidx.appcompat:appcompat:1.6.0'
 }

gstreamer_player/jni/gst_player.c

@@ -35,6 +35,7 @@ typedef struct _CustomData {
     GstState state;               /* Current pipeline state */
     GstState target_state;        /* Desired pipeline state, to be set once buffering is complete */
     gboolean is_live;             /* Live streams do not use buffering */
+    gchar * tag;
 } CustomData;
 
 /* playbin2 flags */
@@ -94,7 +95,7 @@ static JNIEnv *get_jni_env(void) {
 /* Change the content of the UI's TextView */
 static void set_ui_message(const gchar *message, CustomData *data) {
     JNIEnv *env = get_jni_env();
-    GST_DEBUG ("Setting message to: %s", message);
+    //GST_DEBUG ("Setting message to: %s", message);
     jstring jmessage = (*env)->NewStringUTF(env, message);
     (*env)->CallVoidMethod(env, data->app, set_message_method_id, jmessage);
     if ((*env)->ExceptionCheck(env)) {
@@ -125,8 +126,9 @@ static void error_cb(GstBus *bus, GstMessage *msg, CustomData *data) {
 /* Called when the End Of the Stream is reached. Just move to the beginning of the media and pause. */
 static void eos_cb(GstBus *bus, GstMessage *msg, CustomData *data) {
     data->target_state = GST_STATE_PAUSED;
-    data->is_live |= (gst_element_set_state(data->pipeline,
+    GstStateChangeReturn status = gst_element_set_state(data->pipeline,GST_STATE_PAUSED);
-                                            GST_STATE_PAUSED) == GST_STATE_CHANGE_NO_PREROLL);
+    data->is_live |= (status == GST_STATE_CHANGE_NO_PREROLL);
+    GST_DEBUG ("eos_cb, %s", data->is_live ? "true" : "false");
 }
 
 /* Called when buffering messages are received. We inform the UI about the current buffering level and
@@ -196,8 +198,7 @@ static void state_changed_cb(GstBus *bus, GstMessage *msg, CustomData *data) {
     /* Only pay attention to messages coming from the pipeline, not its children */
     if (GST_MESSAGE_SRC (msg) == GST_OBJECT (data->pipeline)) {
         data->state = new_state;
-        gchar *message = g_strdup_printf("State changed to %s",
+        gchar *message = g_strdup_printf("State changed to %s", gst_element_state_get_name(new_state));
-                                         gst_element_state_get_name(new_state));
         set_ui_message(message, data);
         g_free(message);
 
@@ -217,9 +218,7 @@ static void state_changed_cb(GstBus *bus, GstMessage *msg, CustomData *data) {
 static void check_initialization_complete(CustomData *data) {
     JNIEnv *env = get_jni_env();
     if (!data->initialized && data->native_window && data->main_loop) {
-        GST_DEBUG
+        GST_DEBUG("Initialization complete, notifying application. native_window:%p main_loop:%p", data->native_window, data->main_loop);
-        ("Initialization complete, notifying application. native_window:%p main_loop:%p",
-         data->native_window, data->main_loop);
 
         /* The main loop is running and we received a native window, inform the sink about it */
         gst_video_overlay_set_window_handle(GST_VIDEO_OVERLAY (data->pipeline),
@@ -253,8 +252,7 @@ static void *app_function(void *userdata) {
     /* Build pipeline */
     data->pipeline = gst_parse_launch("playbin", &error);
     if (error) {
-        gchar *message =
+        gchar *message = g_strdup_printf("Unable to build pipeline: %s", error->message);
-                g_strdup_printf("Unable to build pipeline: %s", error->message);
         g_clear_error(&error);
         set_ui_message(message, data);
         g_free(message);
@@ -280,12 +278,9 @@ static void *app_function(void *userdata) {
     g_signal_connect (G_OBJECT(bus), "message::error", (GCallback) error_cb,
                       data);
     g_signal_connect (G_OBJECT(bus), "message::eos", (GCallback) eos_cb, data);
-    g_signal_connect (G_OBJECT(bus), "message::state-changed",
+    g_signal_connect (G_OBJECT(bus), "message::state-changed", (GCallback) state_changed_cb, data);
-                      (GCallback) state_changed_cb, data);
+    g_signal_connect (G_OBJECT(bus), "message::buffering", (GCallback) buffering_cb, data);
-    g_signal_connect (G_OBJECT(bus), "message::buffering",
+    g_signal_connect (G_OBJECT(bus), "message::clock-lost", (GCallback) clock_lost_cb, data);
-                      (GCallback) buffering_cb, data);
-    g_signal_connect (G_OBJECT(bus), "message::clock-lost",
-                      (GCallback) clock_lost_cb, data);
     gst_object_unref(bus);
 
     /* Create a GLib Main Loop and set it to run */
@@ -315,8 +310,7 @@ static void *app_function(void *userdata) {
 static void gst_native_init(JNIEnv *env, jobject thiz) {
     CustomData *data = g_new0 (CustomData, 1);
     SET_CUSTOM_DATA (env, thiz, custom_data_field_id, data);
-    GST_DEBUG_CATEGORY_INIT (debug_category, "player", 0,
+    GST_DEBUG_CATEGORY_INIT (debug_category, "player", 0, "HI SHARP DX RTSP Player");
-                             "Android tutorial 5");
     gst_debug_set_threshold_for_name("player", GST_LEVEL_DEBUG);
     GST_DEBUG ("Created CustomData at %p", data);
     data->app = (*env)->NewGlobalRef(env, thiz);
@@ -329,16 +323,16 @@ static void gst_native_finalize(JNIEnv *env, jobject thiz) {
     CustomData *data = GET_CUSTOM_DATA (env, thiz, custom_data_field_id);
     if (!data)
         return;
-    GST_DEBUG ("Quitting main loop...");
+    GST_DEBUG ("[%s]Quitting main loop...", data->tag);
     g_main_loop_quit(data->main_loop);
-    GST_DEBUG ("Waiting for thread to finish...");
+    GST_DEBUG ("[%s]Waiting for thread to finish...", data->tag);
     pthread_join(gst_app_thread, NULL);
-    GST_DEBUG ("Deleting GlobalRef for app object at %p", data->app);
+    GST_DEBUG ("[%s]Deleting GlobalRef for app object at %p", data->tag, data->app);
     (*env)->DeleteGlobalRef(env, data->app);
-    GST_DEBUG ("Freeing CustomData at %p", data);
+    GST_DEBUG ("[%s]Freeing CustomData at %p", data->tag, data);
     g_free(data);
     SET_CUSTOM_DATA (env, thiz, custom_data_field_id, NULL);
-    GST_DEBUG ("Done finalizing");
+    GST_DEBUG ("[%s]Done finalizing", data->tag);
 }
 
 /* Set playbin2's URI */
@@ -352,8 +346,22 @@ void gst_native_set_uri(JNIEnv *env, jobject thiz, jstring uri) {
         gst_element_set_state(data->pipeline, GST_STATE_READY);
     g_object_set(data->pipeline, "uri", char_uri, NULL);
     (*env)->ReleaseStringUTFChars(env, uri, char_uri);
-    data->is_live |=
+    g_object_set(data->pipeline, "latency", 250, NULL);
-            (gst_element_set_state(data->pipeline, data->target_state) == GST_STATE_CHANGE_NO_PREROLL);
+    GstStateChangeReturn status = gst_element_set_state(data->pipeline, data->target_state);
+    data->is_live = (status == GST_STATE_CHANGE_NO_PREROLL);
+    GST_DEBUG ("[%s]gst_native_set_uri, %s", data->tag, data->is_live ? "true" : "false");
+}
+
+
+/* Set name */
+void gst_native_set_tag(JNIEnv *env, jobject thiz, jstring tag) {
+    CustomData *data = GET_CUSTOM_DATA (env, thiz, custom_data_field_id);
+    if (!data || !data->pipeline)
+        return;
+    const gchar *char_tag = (*env)->GetStringUTFChars(env, tag, NULL);
+    GST_DEBUG ("Setting TAG to %s", char_tag);
+    data->tag = g_strdup (char_tag);
+    (*env)->ReleaseStringUTFChars(env, tag, char_tag);
 }
 
 /* Set pipeline to PLAYING state */
@@ -361,9 +369,12 @@ static void gst_native_play(JNIEnv *env, jobject thiz) {
     CustomData *data = GET_CUSTOM_DATA (env, thiz, custom_data_field_id);
     if (!data)
         return;
-    GST_DEBUG ("Setting state to PLAYING");
+    //GST_DEBUG ("Setting state to PLAYING");
+
+    GstStateChangeReturn status = gst_element_set_state(data->pipeline, GST_STATE_PLAYING);
+    data->is_live = (status == GST_STATE_CHANGE_ASYNC);
     data->target_state = GST_STATE_PLAYING;
-    data->is_live |= (gst_element_set_state(data->pipeline, GST_STATE_PLAYING) == GST_STATE_CHANGE_NO_PREROLL);
+    GST_DEBUG ("[%s]Setting state to PLAYING, %s", data->tag, data->is_live ? "true" : "false");
 }
 
 /* Set pipeline to PAUSED state */
@@ -371,21 +382,19 @@ static void gst_native_pause(JNIEnv *env, jobject thiz) {
     CustomData *data = GET_CUSTOM_DATA (env, thiz, custom_data_field_id);
     if (!data)
         return;
-    GST_DEBUG ("Setting state to PAUSED");
+    //GST_DEBUG ("Setting state to PAUSED");
+    GstStateChangeReturn status = gst_element_set_state(data->pipeline, GST_STATE_PAUSED);
+    data->is_live = (status == GST_STATE_CHANGE_ASYNC);
     data->target_state = GST_STATE_PAUSED;
-    data->is_live |=(gst_element_set_state(data->pipeline, GST_STATE_PAUSED) == GST_STATE_CHANGE_NO_PREROLL);
+    GST_DEBUG ("[%s]Setting state to PAUSED, %s", data->tag, data->is_live ? "true" : "false");
 }
 
 /* Static class initializer: retrieve method and field IDs */
 static jboolean gst_native_class_init(JNIEnv *env, jclass klass) {
-    custom_data_field_id =
+    custom_data_field_id = (*env)->GetFieldID(env, klass, "native_custom_data", "J");
-            (*env)->GetFieldID(env, klass, "native_custom_data", "J");
+    set_message_method_id = (*env)->GetMethodID(env, klass, "setMessage", "(Ljava/lang/String;)V");
-    set_message_method_id =
+    on_gstreamer_initialized_method_id = (*env)->GetMethodID(env, klass, "onGStreamerInitialized", "()V");
-            (*env)->GetMethodID(env, klass, "setMessage", "(Ljava/lang/String;)V");
+    on_media_size_changed_method_id = (*env)->GetMethodID(env, klass, "onMediaSizeChanged", "(II)V");
-    on_gstreamer_initialized_method_id =
-            (*env)->GetMethodID(env, klass, "onGStreamerInitialized", "()V");
-    on_media_size_changed_method_id =
-            (*env)->GetMethodID(env, klass, "onMediaSizeChanged", "(II)V");
 
     if (!custom_data_field_id || !set_message_method_id
         || !on_gstreamer_initialized_method_id || !on_media_size_changed_method_id) {
@@ -404,21 +413,18 @@ static void gst_native_surface_init(JNIEnv *env, jobject thiz, jobject surface)
     if (!data)
         return;
     ANativeWindow *new_native_window = ANativeWindow_fromSurface(env, surface);
-    GST_DEBUG ("Received surface %p (native window %p)", surface,
+    GST_DEBUG ("[%s]Received surface %p (native window %p)", data->tag, surface, new_native_window);
-               new_native_window);
 
     if (data->native_window) {
         ANativeWindow_release(data->native_window);
         if (data->native_window == new_native_window) {
-            GST_DEBUG ("New native window is the same as the previous one %p",
+            GST_DEBUG ("[%s]New native window is the same as the previous one %p", data->tag, data->native_window);
-                       data->native_window);
             if (data->pipeline) {
                 gst_video_overlay_expose(GST_VIDEO_OVERLAY (data->pipeline));
-                gst_video_overlay_expose(GST_VIDEO_OVERLAY (data->pipeline));
             }
             return;
         } else {
-            GST_DEBUG ("Released previous native window %p", data->native_window);
+            GST_DEBUG ("[%s]Released previous native window %p", data->tag, data->native_window);
             data->initialized = FALSE;
         }
     }
@@ -431,7 +437,7 @@ static void gst_native_surface_finalize(JNIEnv *env, jobject thiz) {
     CustomData *data = GET_CUSTOM_DATA (env, thiz, custom_data_field_id);
     if (!data)
         return;
-    GST_DEBUG ("Releasing Native Window %p", data->native_window);
+    GST_DEBUG ("[%s]Releasing Native Window %p", data->tag, data->native_window);
 
     if (data->pipeline) {
         gst_video_overlay_set_window_handle(GST_VIDEO_OVERLAY (data->pipeline),
@@ -449,6 +455,7 @@ static JNINativeMethod native_methods[] = {
         {"nativeInit",            "()V",                   (void *) gst_native_init},
         {"nativeFinalize",        "()V",                   (void *) gst_native_finalize},
         {"nativeSetUri",          "(Ljava/lang/String;)V", (void *) gst_native_set_uri},
+        {"nativeSetTag",          "(Ljava/lang/String;)V", (void *) gst_native_set_tag},
         {"nativePlay",            "()V",                   (void *) gst_native_play},
         {"nativePause",           "()V",                   (void *) gst_native_pause},
         {"nativeSurfaceInit",     "(Ljava/lang/Object;)V",
@@ -464,8 +471,7 @@ jint JNI_OnLoad(JavaVM *vm, void *reserved) {
     java_vm = vm;
 
     if ((*vm)->GetEnv(vm, (void **) &env, JNI_VERSION_1_4) != JNI_OK) {
-        __android_log_print(ANDROID_LOG_ERROR, "player",
+        __android_log_print(ANDROID_LOG_ERROR, "player", "Could not retrieve JNIEnv");
-                            "Could not retrieve JNIEnv");
         return 0;
     }
     jclass klass = (*env)->FindClass(env, "com/hisharp/gstreamer_player/GstLibrary");

gstreamer_player/res/layout/main.xml

@@ -1,46 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
-    android:layout_width="match_parent"
-    android:layout_height="match_parent"
-    android:gravity="center_vertical"
-    android:orientation="vertical" >
-
-    <TextView
-        android:id="@+id/textview_message"
-        android:layout_width="match_parent"
-        android:layout_height="wrap_content"
-        android:layout_marginBottom="16dip"
-        android:gravity="center_horizontal" />
-
-    <LinearLayout
-        android:layout_width="match_parent"
-        android:layout_height="wrap_content"
-        android:layout_marginBottom="16dip"
-        android:gravity="center_horizontal"
-        android:orientation="horizontal" >
-
-        <ImageButton
-            android:id="@+id/button_play"
-            android:layout_width="wrap_content"
-            android:layout_height="wrap_content"
-            android:contentDescription="@string/button_play"
-            android:src="@android:drawable/ic_media_play"
-            android:text="@string/button_play" />
-
-        <ImageButton
-            android:id="@+id/button_stop"
-            android:layout_width="wrap_content"
-            android:layout_height="wrap_content"
-            android:contentDescription="@string/button_stop"
-            android:src="@android:drawable/ic_media_pause"
-            android:text="@string/button_stop" />
-
-    </LinearLayout>
-
-    <com.hisharp.gstreamer_player.GStreamerSurfaceView
-        android:id="@+id/surface_video"
-        android:layout_width="wrap_content"
-        android:layout_height="wrap_content"
-        android:layout_gravity="center_vertical|center_horizontal" />
-
-</LinearLayout>

gstreamer_player/res/values/strings.xml

@@ -1,12 +1,4 @@
 <?xml version="1.0" encoding="utf-8"?>
 <resources>
-    <string name="app_name">GStreamer tutorial 5</string>
+
-    <string name="button_play">Play</string>
-    <string name="button_stop">Stop</string>
-    <string name="button_select">Select</string>
-    <string name="button_cancel">Cancel</string>
-    <string name="filechooser_name">Select a file</string>
-    <string name="location">Location</string>
-    <string name="cant_read_folder">folder cannot be read</string>
-    <string name="icon">Icon</string>
 </resources>

gstreamer_player/src/com/hisharp/gstreamer_player/GstCallback.java

@@ -1,6 +1,6 @@
 package com.hisharp.gstreamer_player;
 
 public interface GstCallback {
-    void onStatus(GstLibrary gstInstance, GstStatus gstStatus);
+    void onStatus(GstStatus gstStatus);
-    void onMessage(GstLibrary gstInstance, String message);
+    void onMessage(String message);
 }

gstreamer_player/src/com/hisharp/gstreamer_player/GstLibrary.java

@@ -10,21 +10,25 @@ import android.view.SurfaceView;
 
 import org.freedesktop.gstreamer.GStreamer;
 
-public class GstLibrary implements SurfaceHolder.Callback {
+import java.io.Closeable;
+import java.io.IOException;
+
+public class GstLibrary implements Closeable, SurfaceHolder.Callback {
+
+    private static final String TAG = GstLibrary.class.getSimpleName();
 
     final Context mAppContext;
 
     private GstCallback gstCallback;
 
-    private GStreamerSurfaceView surfaceView;
+    private String rtspUrl;
 
-    private final Handler mainHandler = new Handler(Looper.getMainLooper());
+    private String tag = "";
 
-    private final String rtspUrl;
+    private Boolean isInit = false;
 
-    public GstLibrary(Context context, String rtspUrl) {
+    public GstLibrary(Context context) {
         this.mAppContext = context.getApplicationContext();
-        this.rtspUrl = rtspUrl;
 
         // Initialize GStreamer and warn if it fails
         try {
@@ -40,8 +44,8 @@ public class GstLibrary implements SurfaceHolder.Callback {
     private native void nativeInit();     // Initialize native code, build pipeline, etc
     private native void nativeFinalize(); // Destroy pipeline and shutdown native code
     private native void nativeSetUri(String uri); // Set the URI of the media to play
+    private native void nativeSetTag(String tag); // Set the URI of the media to play
     private native void nativePlay();     // Set pipeline to PLAYING
-    private native void nativeSetPosition(int milliseconds); // Seek to the indicated position, in milliseconds
     private native void nativePause();    // Set pipeline to PAUSED
     private static native boolean nativeClassInit(); // Initialize native class: cache Method IDs for callbacks
     private native void nativeSurfaceInit(Object surface); // A new surface is available
@@ -51,67 +55,82 @@ public class GstLibrary implements SurfaceHolder.Callback {
     //private final String defaultMediaUri = "rtsp://admin:admin@192.168.0.77:554/media/video2";
 
     public void play() {
+        if (!isInit) return;
         nativePlay();
     }
 
     public void stop() {
+        if (!isInit) return;
         nativePause();
     }
 
-    public void release() {
+    public void setRtspUrl(String rtspUrl) {
-        nativeFinalize();
+        this.rtspUrl = rtspUrl;
+    }
+
+    public void setTag(String tag) {
+        this.tag = tag;
+        nativeSetTag(tag);
+    }
+
+    public void releaseSurface() {
+        isInit = false;
+        nativeSurfaceFinalize();
     }
 
     public void setOnStatusChangeListener(GstCallback callback) {
         this.gstCallback = callback;
     }
 
-    public void setSurfaceView(GStreamerSurfaceView surfaceView) {
+    public void setSurfaceHolder(SurfaceHolder holder) {
-        this.surfaceView = surfaceView;
-        SurfaceHolder holder = this.surfaceView.getHolder();
         holder.addCallback(this);
-        nativeSurfaceInit(holder.getSurface());
     }
 
     // Called from native code. This sets the content of the TextView from the UI thread.
     private void setMessage(final String message) {
         if (gstCallback == null) return;
         if (message.contains("State changed to PAUSED")) {
-            gstCallback.onStatus(this, GstStatus.PAUSE);
+            gstCallback.onStatus(GstStatus.PAUSE);
-        } else if (message.contains("State changed to PLAYING")) {
+        } else if (message.contains("State changed to PLAYING") || message.contains("Buffering complete")) {
-            gstCallback.onStatus(this, GstStatus.PLAYING);
+            gstCallback.onStatus(GstStatus.PLAYING);
         } else if (message.contains("Could not open resource for reading and writing")) {
-            gstCallback.onStatus(this, GstStatus.ERROR);
+            gstCallback.onStatus(GstStatus.ERROR_WHEN_OPENING);
+        } else if (message.contains("GStreamer encountered a general supporting library error")) {
+            gstCallback.onStatus(GstStatus.ERROR);
+        } else if (message.contains("Unhandled error")) {
+            gstCallback.onStatus(GstStatus.ERROR);
+        } else if (message.contains("Buffering")) {
+            gstCallback.onStatus(GstStatus.BUFFERING);
         }
-        gstCallback.onMessage(this, message);
+        gstCallback.onMessage(message);
     }
 
     // Called from native code. Native code calls this once it has created its pipeline and
     // the main loop is running, so it is ready to accept commands.
     private void onGStreamerInitialized () {
-        Log.i ("GStreamer", "GStreamer initialized:");
+        Log.i (TAG + "+" + tag, "GStreamer initialized:");
 
         if (gstCallback != null) {
-            gstCallback.onStatus(this, GstStatus.READY);
+            gstCallback.onStatus(GstStatus.READY);
         }
 
         // Restore previous playing state
+        if (rtspUrl != null) {
             nativeSetUri(rtspUrl);
-        nativeSetPosition (0);
         }
 
-    // Called from native code
+        isInit = true;
-    private void setCurrentPosition(final int position, final int duration) {}
+    }
 
     // Called from native code when the size of the media changes or is first detected.
     // Inform the video surface about the new size and recalculate the layout.
     private void onMediaSizeChanged (int width, int height) {
-        Log.i ("GStreamer", "Media size changed to " + width + "x" + height);
+        Log.i (TAG + "+" + tag, String.format("Media size changed to %d x %d", width, height));
-        mainHandler.post(() -> {
+        /*mainHandler.post(() -> {
             surfaceView.media_width = width;
             surfaceView.media_height = height;
             surfaceView.requestLayout();
-        });
+        });*/
     }
 
     static {
@@ -120,19 +139,34 @@ public class GstLibrary implements SurfaceHolder.Callback {
         nativeClassInit();
     }
 
-    public void surfaceChanged(SurfaceHolder holder, int format, int width,
+    @Override
-            int height) {
+    public void close() throws IOException {
-        Log.d("GStreamer", "Surface changed to format " + format + " width "
+        isInit = false;
-                + width + " height " + height);
+        try {
+            nativeFinalize();
+        } catch (Exception e) {
+            e.printStackTrace();
+        }
+    }
+
+    @Override
+    public void surfaceCreated(SurfaceHolder holder) {
+        Log.d(TAG + "+" + tag, "Surface created: " + holder.getSurface());
+        Log.i (TAG + "+" + tag, "GStreamer surfaceCreated");
+        isInit = true;
         nativeSurfaceInit(holder.getSurface());
     }
 
-    public void surfaceCreated(SurfaceHolder holder) {
+    @Override
-        Log.d("GStreamer", "Surface created: " + holder.getSurface());
+    public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) {
+        Log.d(TAG + "+" + tag, String.format("Surface changed, format: %d, width: %d, height: %d", format, width, height));
+        /*setSurfaceHolder(holder);*/
     }
 
+    @Override
     public void surfaceDestroyed(SurfaceHolder holder) {
-        Log.d("GStreamer", "Surface destroyed");
+        Log.d(TAG + "+" + tag, "Surface destroyed");
-        nativeSurfaceFinalize();
+        releaseSurface();
+        isInit = false;
     }
 }

gstreamer_player/src/com/hisharp/gstreamer_player/GstStatus.java

@@ -4,5 +4,7 @@ public enum GstStatus {
     READY,
     PAUSE,
     PLAYING,
-    ERROR
+    ERROR,
+    ERROR_WHEN_OPENING,
+    BUFFERING
 }

settings.gradle

@@ -1,2 +1,19 @@
+pluginManagement {
+    repositories {
+        gradlePluginPortal()
+        google()
+        mavenCentral()
+        maven { url 'https://jitpack.io' }
+    }
+}
+dependencyResolutionManagement {
+    repositoriesMode.set(RepositoriesMode.FAIL_ON_PROJECT_REPOS)
+    repositories {
+        google()
+        mavenCentral()
+        jcenter() // Warning: this repository is going to shut down soon
+        maven {url "https://jitpack.io"}
+    }
+}
 include ':gstreamer_player'
 include ':app'