Play video functions in C + +, playing on slate controls

Create a MediaPlayer material, convert it to a painting brush, and then give Simage, in the Tick update screen, that is, here is the specific code, #pragma once#include "CoreMinimal.h" #include "uobject/ WeakObjectPtr.h "#include" widgets/declarativesyntaxsupport.h "#include" Widgets/scompoundwidget.h "class Uaudiocomponent;class umaterial;class umaterialexpressiontexturesample;class Umediaplayer;class UMediaSoundWave; Class Umediatexture;struct Fslatebrush;enum class emediaevent;/** * */class userinterface_api svideoplay:public SCompou Ndwidget{public:declare_delegate (Fclosevieoplay) Slate_begin_args (svideoplay) {}slate_event (FCloseVieoPlay, Onclosevideoplay) slate_argument (fstring, Videourl) Slate_end_args () Svideoplay (); ~svideoplay ();/** Constructs This Widget with Inargs */void Construct (const farguments& Inargs),/** the material that wraps the video texture for Displa Y in an simage. */umaterial* material;/** The Slate brush that renders the Material. */tsharedptr<fslatebrush> materialbrush;/** The media player whose video texture is shown in this widget. */umediaplayer* MediaPlayer; Umediatexture* defaulttexture; tweakobjectptr<umediatexture> currenttexture;/** The video texture sampler in the wrapper material. */umaterialexpressiontexturesample* texturesampler;virtual void Tick (const fgeometry& allottedgeometry, const Double incurrenttime, const float indeltatime) override;void updatematerial (); Fstring Videourl; Freply Closevideoplay (); Fclosevieoplay Onclosevideoplay;};

Fill out your copyright notice in the Description page of Project Settings. #include "UserInterface.h" #include "svideopl Ay.h "#include" styling/slatebrush.h "#include" widgets/images/simage.h "#include" IMediaOutput.h "#include" IMediaPlayer.h "#include" materials/material.h "#include" materials/materialexpressiontexturesample.h "#include" MediaPlayer.h "#include" MediaTexture.h "#include" Engine.h "#include" SlateOptMacros.h "Svideoplay::svideoplay (): Currenttexture (nullptr), Defaulttexture (nullptr), Material (nullptr), MediaPlayer (nullptr) {//defaultsoundwave = Newobject<umediasoundwave> (Gettransientpackage (), Name_none, Rf_transient | Rf_public);//if (Defaultsoundwave! = nullptr)//{//defaultsoundwave->addtoroot ();//audiocomponent = FAudioDevice: : Createcomponent (Defaultsoundwave);//if (audiocomponent! = nullptr)//{//audiocomponent->setvolumemultiplier ( 1.0f);//audiocomponent->setpitchmultiplier (1.0f);//audiocomponent->ballowspatialization = false;// Audiocomponent->bisuisound = True;//audiocomponent->bautodestroy = False;//audiocomponent->addtoroot ();//}//}}svideoplay::~svideoplay ( ) {if (MediaPlayer! = nullptr) {mediaplayer->onmediaevent (). RemoveAll (this);//remove default sinks from native player//fmediaplayerbase& player = mediaplayer-> Getbaseplayer ();/*if (mediaplayer->getsoundwave () = = nullptr) {player.setaudiosink (nullptr);} *//*if (mediaplayer->getvideotexture () = = nullptr) {player.setvideosink (nullptr);} */}//release default sinks/*if (audiocomponent! = nullptr) {audiocomponent->stop (); Audiocomponent->removefromroot ();} */if (Material! = nullptr) {material->removefromroot ();} /*if (Defaultsoundwave! = nullptr) {defaultsoundwave->removefromroot ();} */if (defaulttexture! = nullptr) {defaulttexture->removefromroot ();}} Begin_slate_function_build_optimizationvoid svideoplay::construct (const farguments& InArgs) {OnCloseVideoPlay = Inargs._onclosevideoplay; Videourl = Inargs._videourl; MediaPlayer = loadobject<umediaplayer> (NULL, TEXT ("/game/common/video/mediaplayer.mediaplayer"), NULL, load_none, NULL); Material = newobject<umaterial> (Gettransientpackage (), Name_none, Rf_transient | Rf_public); if (Material! = nullptr) {Texturesampler = newobject<umaterialexpressiontexturesample> (Material); { Texturesampler->samplertype = Samplertype_color;} fexpressionoutput& Output = texturesampler->getoutputs () [0]; fexpressioninput& Input = material->emissivecolor; {input.expression = Texturesampler;input. Mask = Output.mask;input. Maskr = Output.maskr;input. MASKG = Output.maskg;input. MASKB = Output.maskb;input. Maska = Output.maska;} Material->expressions.add (Texturesampler); Material->materialdomain = ematerialdomain::md_ui; Material->addtoroot ();} Create Slate Brushmaterialbrush = makeshareable (New Fslatebrush ()); {Materialbrush->setresourceobject (Material);} Updatematerial (); Childslot[snew (SBox). Widthoverride (1000). Heightoverride (1000). HAlign (Halign_center). valign (Valign_center) [Snew (SVerticalbox) +sverticalbox::slot (). Autoheight () [Snew (Sbutton). ButtonStyle (Fpanelstyle::get (), "Button_alpha"). OnClicked (this, &svideoplay::closevideoplay). HAlign (halign_right). valign (Valign_center). Content () [Snew (Simage). Image (Fpanelstyle::getbrush ("Scheme_close"))]]+sverticalbox::slot () [Snew (Simage). Image (Materialbrush.get ())]]];//bool isplay = Mediaplayer->openurl (TEXT ("Http://127.0.0.1:8080/Marionette_ Rl.mp4 ")); bool Isplay = Mediaplayer->openurl (Videourl);} End_slate_function_build_optimizationvoid Svideoplay::tick (const fgeometry& allottedgeometry, const double Incurrenttime, const float indeltatime) {updatematerial ();//updatesoundwave ();} void Svideoplay::updatematerial () {umediatexture* Texture = Mediaplayer->getvideotexture ();//if (Texture = nullptr )//{////Create default texture if needed//if (defaulttexture = = nullptr)//{//defaulttexture = newobject< Umediatexture> (Gettransientpackage (), Name_none, Rf_transient | Rf_public);//if (defaulttexture! = nullptr)//{Defaulttexture->updateresource ();//defaulttexture->addtoroot ();//}//}////set default texture as output sink if (defaulttexture! = nullptr)//{//mediaplayer->getbaseplayer (). Setvideosink (defaulttexture);//}//texture = defaulttexture;//}//assign new Texture to Materialif (Texture! = currenttexture) {texturesampler->texture = Texture; Material->posteditchange (); Currenttexture = Texture;} Resize Current Textureif (currenttexture! = nullptr) {materialbrush->imagesize.x = currenttexture-> Getsurfacewidth (); Materialbrush->imagesize.y = Currenttexture->getsurfaceheight ();} Else{materialbrush->imagesize = Fvector2d::zerovector;}} Freply Svideoplay::closevideoplay () {if (Onclosevideoplay.isbound ()) {Onclosevideoplay.execute ();} Onclosevideoplay.executeifbound (); return freply::handled ();}

Audio section commented out, if necessary, self-improvement bar.

　　

Play video functions in C + +, playing on slate controls