WIP rewrite generate to async

app/src/main/java/com/futo/platformplayer/Extensions_V8.kt

@@ -13,10 +13,18 @@ import com.futo.platformplayer.engine.exceptions.ScriptExecutionException
 import com.futo.platformplayer.engine.exceptions.ScriptImplementationException
 import com.futo.platformplayer.logging.Logger
 import kotlinx.coroutines.CompletableDeferred
+import kotlinx.coroutines.CoroutineScope
 import kotlinx.coroutines.Deferred
+import kotlinx.coroutines.ExperimentalCoroutinesApi
+import kotlinx.coroutines.Job
+import kotlinx.coroutines.async
 import kotlinx.coroutines.cancel
+import kotlinx.coroutines.selects.SelectClause0
+import kotlinx.coroutines.selects.SelectClause1
 import java.util.concurrent.CancellationException
 import java.util.concurrent.CountDownLatch
+import kotlin.coroutines.AbstractCoroutineContextElement
+import kotlin.coroutines.CoroutineContext
 import kotlin.reflect.jvm.internal.impl.load.kotlin.JvmType
 
 
@@ -222,9 +230,15 @@ fun <T: V8Value> V8ValuePromise.toV8ValueBlocking(plugin: V8Plugin): T {
         throw promiseException!!;
     return promiseResult!!;
 }
-fun <T: V8Value> V8ValuePromise.toV8ValueAsync(plugin: V8Plugin): Deferred<T> {
+fun <T: V8Value> V8ValuePromise.toV8ValueAsync(plugin: V8Plugin): V8Deferred<T> {
-    val def = CompletableDeferred<T>();
+    val def = if(this.has("estDuration"))
+        V8Deferred(CompletableDeferred<T>(),
+            this.getOrDefault(plugin.config, "estDuration", "toV8ValueAsync", -1) ?: -1);
+    else
+        V8Deferred<T>(CompletableDeferred<T>());
+
     val promise = this;
+    plugin.busy {
         this.register(object: IV8ValuePromise.IListener {
             override fun onFulfilled(p0: V8Value?) {
                 plugin.resolvePromise(promise);
@@ -239,6 +253,7 @@ fun <T: V8Value> V8ValuePromise.toV8ValueAsync(plugin: V8Plugin): Deferred<T> {
                 def.completeExceptionally(NotImplementedError("onCatch promise not implemented.."));
             }
         });
+    }
     plugin.registerPromise(promise) {
         if(def.isActive)
             def.cancel("Cancelled by system");
@@ -246,6 +261,37 @@ fun <T: V8Value> V8ValuePromise.toV8ValueAsync(plugin: V8Plugin): Deferred<T> {
     return def;
 }
 
+class V8Deferred<T>(val deferred: Deferred<T>, val estDuration: Int = -1): Deferred<T> by deferred {
+
+    fun <R> convert(conversion: (result: T)->R): V8Deferred<R>{
+        val newDef = CompletableDeferred<R>()
+        this.invokeOnCompletion { 
+            if(it != null)
+                newDef.completeExceptionally(it);
+            else
+                newDef.complete(conversion(this@V8Deferred.getCompleted()));
+        }
+        
+        return V8Deferred<R>(newDef, estDuration);
+    }
+
+
+    companion object {
+        fun <R> merge(scope: CoroutineScope, defs: List<V8Deferred<T>> conversion: (result: List<T>)->R): V8Deferred<R> {
+
+            var amount = -1;
+            for(def in defs)
+                amount = Math.max(amount, def.estDuration);
+
+            val def = scope.async {
+                val results = defs.map { it.await() };
+                return@async conversion(results);
+            }
+            return V8Deferred(def, amount);
+        }
+    }
+}
+
 
 fun <T: V8Value> V8ValueObject.invokeV8(method: String, vararg obj: Any): T {
     var result = this.invoke<V8Value>(method, *obj);
@@ -254,3 +300,10 @@ fun <T: V8Value> V8ValueObject.invokeV8(method: String, vararg obj: Any): T {
     }
     return result as T;
 }
+fun <T: V8Value> V8ValueObject.invokeV8Async(method: String, vararg obj: Any): V8Deferred<T> {
+    var result = this.invoke<V8Value>(method, *obj);
+    if(result is V8ValuePromise) {
+        return result.toV8ValueAsync(this.getSourcePlugin()!!);
+    }
+    return V8Deferred(CompletableDeferred(result as T));
+}

app/src/main/java/com/futo/platformplayer/api/media/platforms/js/models/sources/JSDashManifestRawAudioSource.kt

@@ -2,6 +2,7 @@ package com.futo.platformplayer.api.media.platforms.js.models.sources
 
 import com.caoccao.javet.values.primitive.V8ValueString
 import com.caoccao.javet.values.reference.V8ValueObject
+import com.futo.platformplayer.V8Deferred
 import com.futo.platformplayer.api.media.models.streams.sources.IAudioSource
 import com.futo.platformplayer.api.media.models.streams.sources.IDashManifestSource
 import com.futo.platformplayer.api.media.models.streams.sources.IVideoUrlSource
@@ -15,8 +16,12 @@ import com.futo.platformplayer.getOrDefault
 import com.futo.platformplayer.getOrNull
 import com.futo.platformplayer.getOrThrow
 import com.futo.platformplayer.invokeV8
+import com.futo.platformplayer.invokeV8Async
 import com.futo.platformplayer.others.Language
 import com.futo.platformplayer.states.StateDeveloper
+import kotlinx.coroutines.CompletableDeferred
+import kotlinx.coroutines.CoroutineScope
+import kotlinx.coroutines.Deferred
 
 class JSDashManifestRawAudioSource : JSSource, IAudioSource, IJSDashManifestRawSource, IStreamMetaDataSource {
     override val container : String;
@@ -52,6 +57,44 @@ class JSDashManifestRawAudioSource : JSSource, IAudioSource, IJSDashManifestRawS
         hasGenerate = _obj.has("generate");
     }
 
+    override fun generateAsync(scope: CoroutineScope): V8Deferred<String?> {
+        if(!hasGenerate)
+            return V8Deferred(CompletableDeferred(manifest));
+        if(_obj.isClosed)
+            throw IllegalStateException("Source object already closed");
+
+        val plugin = _plugin.getUnderlyingPlugin();
+
+        var result: V8Deferred<V8ValueString>? = null;
+        if(_plugin is DevJSClient)
+            result = StateDeveloper.instance.handleDevCall(_plugin.devID, "DashManifestRaw", false) {
+                _plugin.getUnderlyingPlugin().catchScriptErrors("DashManifestRaw", "dashManifestRaw.generate()") {
+                    _plugin.isBusyWith("dashAudio.generate") {
+                        _obj.invokeV8Async<V8ValueString>("generate");
+                    }
+                }
+            }
+        else
+            result = _plugin.getUnderlyingPlugin().catchScriptErrors("DashManifestRaw", "dashManifestRaw.generate()") {
+                _plugin.isBusyWith("dashAudio.generate") {
+                    _obj.invokeV8Async<V8ValueString>("generate");
+                }
+            }
+
+        return plugin.busy {
+            val initStart = _obj.getOrDefault<Int>(_config, "initStart", "JSDashManifestRawSource", null) ?: 0;
+            val initEnd = _obj.getOrDefault<Int>(_config, "initEnd", "JSDashManifestRawSource", null) ?: 0;
+            val indexStart = _obj.getOrDefault<Int>(_config, "indexStart", "JSDashManifestRawSource", null) ?: 0;
+            val indexEnd = _obj.getOrDefault<Int>(_config, "indexEnd", "JSDashManifestRawSource", null) ?: 0;
+            if(initEnd > 0 && indexStart > 0 && indexEnd > 0) {
+                streamMetaData = StreamMetaData(initStart, initEnd, indexStart, indexEnd);
+            }
+
+            return@busy result.convert {
+                it.value
+            };
+        }
+    }
     override fun generate(): String? {
         if(!hasGenerate)
             return manifest;

app/src/main/java/com/futo/platformplayer/api/media/platforms/js/models/sources/JSDashManifestRawSource.kt

@@ -3,6 +3,7 @@ package com.futo.platformplayer.api.media.platforms.js.models.sources
 import com.caoccao.javet.values.V8Value
 import com.caoccao.javet.values.primitive.V8ValueString
 import com.caoccao.javet.values.reference.V8ValueObject
+import com.futo.platformplayer.V8Deferred
 import com.futo.platformplayer.api.media.models.streams.sources.IDashManifestSource
 import com.futo.platformplayer.api.media.models.streams.sources.IVideoSource
 import com.futo.platformplayer.api.media.models.streams.sources.IVideoUrlSource
@@ -16,11 +17,17 @@ import com.futo.platformplayer.getOrDefault
 import com.futo.platformplayer.getOrNull
 import com.futo.platformplayer.getOrThrow
 import com.futo.platformplayer.invokeV8
+import com.futo.platformplayer.invokeV8Async
 import com.futo.platformplayer.states.StateDeveloper
+import kotlinx.coroutines.CompletableDeferred
+import kotlinx.coroutines.CoroutineScope
+import kotlinx.coroutines.Deferred
+import kotlinx.coroutines.async
 
 interface IJSDashManifestRawSource {
     val hasGenerate: Boolean;
     var manifest: String?;
+    fun generateAsync(scope: CoroutineScope): Deferred<String?>;
     fun generate(): String?;
 }
 open class JSDashManifestRawSource: JSSource, IVideoSource, IJSDashManifestRawSource, IStreamMetaDataSource {
@@ -58,6 +65,45 @@ open class JSDashManifestRawSource: JSSource, IVideoSource, IJSDashManifestRawSo
         hasGenerate = _obj.has("generate");
     }
 
+    override fun generateAsync(scope: CoroutineScope): V8Deferred<String?> {
+        if(!hasGenerate)
+            return V8Deferred(CompletableDeferred(manifest));
+        if(_obj.isClosed)
+            throw IllegalStateException("Source object already closed");
+
+        val plugin = _plugin.getUnderlyingPlugin();
+
+        var result: V8Deferred<V8ValueString>? = null;
+        if(_plugin is DevJSClient) {
+            result = StateDeveloper.instance.handleDevCall(_plugin.devID, "DashManifestRawSource.generate()") {
+                _plugin.getUnderlyingPlugin().catchScriptErrors("DashManifestRaw.generate", "generate()", {
+                    _plugin.isBusyWith("dashVideo.generate") {
+                        _obj.invokeV8Async<V8ValueString>("generate");
+                    }
+                });
+            }
+        }
+        else
+            result = _plugin.getUnderlyingPlugin().catchScriptErrors("DashManifestRaw.generate", "generate()", {
+                _plugin.isBusyWith("dashVideo.generate") {
+                    _obj.invokeV8Async<V8ValueString>("generate");
+                }
+            });
+
+        return plugin.busy {
+            val initStart = _obj.getOrDefault<Int>(_config, "initStart", "JSDashManifestRawSource", null) ?: 0;
+            val initEnd = _obj.getOrDefault<Int>(_config, "initEnd", "JSDashManifestRawSource", null) ?: 0;
+            val indexStart = _obj.getOrDefault<Int>(_config, "indexStart", "JSDashManifestRawSource", null) ?: 0;
+            val indexEnd = _obj.getOrDefault<Int>(_config, "indexEnd", "JSDashManifestRawSource", null) ?: 0;
+            if(initEnd > 0 && indexStart > 0 && indexEnd > 0) {
+                streamMetaData = StreamMetaData(initStart, initEnd, indexStart, indexEnd);
+            }
+
+            return@busy result.convert {
+                it.value
+            };
+        }
+    }
     override open fun generate(): String? {
         if(!hasGenerate)
             return manifest;
@@ -117,6 +163,32 @@ class JSDashManifestMergingRawSource(
     override val priority: Boolean
         get() = video.priority;
 
+    override fun generateAsync(scope: CoroutineScope): V8Deferred<String?> {
+        val videoDashDef = video.generateAsync(scope);
+        val audioDashDef = audio.generateAsync(scope);
+
+        return V8Deferred.merge(scope, listOf(videoDashDef, audioDashDef)) {
+            val (videoDash: String?, audioDash: String?) = it;
+
+            if (videoDash != null && audioDash == null) return@merge videoDash;
+            if (audioDash != null && videoDash == null) return@merge audioDash;
+            if (videoDash == null) return@merge null;
+
+            //TODO: Temporary simple solution..make more reliable version
+
+            var result: String? = null;
+            val audioAdaptationSet = adaptationSetRegex.find(audioDash!!);
+            if (audioAdaptationSet != null) {
+                result = videoDash.replace(
+                    "</AdaptationSet>",
+                    "</AdaptationSet>\n" + audioAdaptationSet.value
+                )
+            } else
+                result = videoDash;
+
+            return@merge result;
+        };
+    }
     override fun generate(): String? {
         val videoDash = video.generate();
         val audioDash = audio.generate();

app/src/main/java/com/futo/platformplayer/engine/V8Plugin.kt

@@ -277,7 +277,7 @@ class V8Plugin {
     }
 
     suspend fun <T : V8Value> executeTypedAsync(js: String) : Deferred<T> {
-        warnIfMainThread("V8Plugin.executeTyped");
+        warnIfMainThread("V8Plugin.executeTypedAsync");
         if(isStopped)
             throw PluginEngineStoppedException(config, "Instance is stopped", js);
 
@@ -358,7 +358,7 @@ class V8Plugin {
             _promises.remove(promise);
             return@synchronized found;
         };
-        if(found != null)
+        if(found != null && cancelled)
             found(promise);
     }
     fun cancelAllPromises(){

app/src/main/java/com/futo/platformplayer/views/video/FutoVideoPlayerBase.kt

@@ -567,11 +567,13 @@ abstract class FutoVideoPlayerBase : RelativeLayout {
 
         if(videoSource.hasGenerate) {
             findViewTreeLifecycleOwner()?.lifecycle?.coroutineScope?.launch(Dispatchers.IO) {
+                val scope = this;
                 var startId = -1;
                 try {
                     val plugin = videoSource.getUnderlyingPlugin() ?: return@launch;
                     startId = plugin.getUnderlyingPlugin()?.runtimeId ?: -1;
-                    val generated = plugin.busy { videoSource.generate(); };
+                    val generatedDef = plugin.busy { videoSource.generateAsync(scope); };
+                    val generated = generatedDef.await();
                     if (generated != null) {
                         withContext(Dispatchers.Main) {
                             val dataSource = if(videoSource is JSSource && (videoSource.requiresCustomDatasource))