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Unigine::WidgetSpriteVideo Class

Header:#include <UnigineWidgets.h>
Inherits:WidgetSprite

This class is used to create a virtual monitor that plays a video file (currently only *.OGV files are supported). It can be synchrozied with playback of the ambient sound or the directional sound source.

The following example illustrates how to play a video-file on the system GUI or a GUI object using the WidgetSpriteVideo class.

Source code (C++)
#include <UnigineUserInterface.h>
#include <UnigineObjects.h>
#include <UnigineEditor.h>

// injecting Unigine and Math namespaces
using namespace Unigine;
using namespace Math;

// path to the video file to play (only *.OGV type is supported)
const char *file_name = "<YOUR_VIDEO_FILE_NAME>.ogv";

// GUI object to play the video on
ObjectGuiPtr GUIobject;

// sprite video widgets
WidgetSpriteVideoPtr TVscreen;
WidgetSpriteVideoPtr MAINscreen;

/*
 */

int AppWorldLogic::init() {

	// creating a GUI object with the following size: 1.0f x 0.5f 
	GUIobject = ObjectGui::create(1.0f, 0.5f);
	
	// passing node ownership to  the Editor
	GUIobject->release();
	Editor::get()->addNode(GUIobject->getNode());

	// setting transformation and other parameters of the GUI object
	GUIobject->setWorldTransform(Mat4(translate(-0.5f, 1.0f, 1.5f) * rotateX(90.0f)));
	GUIobject->setMaterial("gui_base", "*");
	GUIobject->setProperty("surface_base", "*");
	GUIobject->setMaterialState("mode", 1, 0);


	// creating the first sprite video widget that plays a file_name video file on the GUI object
	TVscreen = WidgetSpriteVideo::create(GUIobject->getGui(), file_name, 1);
	TVscreen->release();

	// adding the sprite video widge to the GUI object
	GUIobject->getGui()->addChild(TVscreen->getWidget(), Gui::ALIGN_OVERLAP | Gui::ALIGN_BACKGROUND);

	// setting looped playback mode
	TVscreen->setLoop(1);

	// launching playback
	TVscreen->play();

	// creating the second sprite video widget that plays a file_name video file on the system GUI
	MAINscreen = WidgetSpriteVideo::create(Gui::get(), file_name, 1);
	MAINscreen->release();

	// setting size and position of the second sprite video widget on the screen
	MAINscreen->setPosition(100, 100);
	MAINscreen->setWidth(400);
	MAINscreen->setHeight(225);
	MAINscreen->arrange();

	// adding the sprite video widge to the system GUI
	Gui::get()->addChild(MAINscreen->getWidget(), Gui::ALIGN_OVERLAP | Gui::ALIGN_BACKGROUND);

	// setting looped playback mode
	MAINscreen->setLoop(1);

	// launching playback
	MAINscreen->play();


	//mesh.clear();
	return 1;
}

/*
 */
 
int AppWorldLogic::shutdown() {

	// clearing pointers
	TVscreen.clear();
	MAINscreen.clear();
	GUIobject.clear();
	
	return 1;
}

WidgetSpriteVideo Class

Members


static WidgetSpriteVideoPtr create(const Ptr<Gui> & gui, const char * name = 0, int mode = 1)

Constructor. Creates a new sprite that plays video.

Arguments

  • const Ptr<Gui> & gui - GUI, to which the new sprite will belong.
  • const char * name - Path to a video file.
  • int mode - YUV flag: 1 if convertion to RGB should be performed by the GPU, 0 - if by the CPU.

Ptr<WidgetSpriteVideo> cast(const Ptr<Widget> & widget)

Casts a WidgetSpriteVideo out of the Widget instance.

Arguments

  • const Ptr<Widget> & widget - Pointer to Widget.

Return value

Pointer to WidgetSpriteVideo.

void setAmbientSource(const Ptr<AmbientSource> & source)

Synchronizes video playback to the ambient sound source playback.

Arguments

  • const Ptr<AmbientSource> & source - Ambient sound source according to which video playback will be synchronized.

Ptr<AmbientSource> getAmbientSource()

Returns the ambient sound source according to which video playback is synchronized.

Return value

Ambient sound source.

void setLoop(int loop)

Sets a value indicating if the video should be looped.

Arguments

  • int loop - Positive number to loop the video, 0 to play it only once.

int getLoop()

Returns a value indicating if the video is looped.

Return value

Positive number if the video is looped; otherwise, 0.

int isPlaying()

Returns a value indicating if the video is being played at the moment.

Return value

1 if the video is being played; otherwise, 0.

void setSoundSource(const Ptr<SoundSource> & source)

Synchronizes video playback to the sound source playback.

Arguments

  • const Ptr<SoundSource> & source - Sound source according to which video playback will be synchronized.

Ptr<SoundSource> getSoundSource()

Returns the sound source according to which video playback is synchronized.

Return value

Sound source.

int isStopped()

Returns a value indicating if the video is stopped at the moment.

Return value

1 if the video is stopped; otherwise, 0.

void setVideoTime(float time)

Rewinds or fast-forwards the video to a given time.

Arguments

  • float time - Time in seconds.

float getVideoTime()

Returns the time of the currently played frame.

Return value

Time in seconds.

void setYUV(int yuv)

Sets a flag for YUV conversion.

Arguments

  • int yuv - Mode flag: 1 if convertion to RGB should be performed by the GPU, 0 if it is converted by the CPU.

int getYUV()

Returns a flag for YUV conversion.

Return value

1 if convertion to RGB is performed by the GPU, 0 if it is converted by the CPU.

void play()

Starts playing video.

void stop()

Stops playing video. This function saves the playback position so that playing of the file can be resumed from the same point.
Last update: 2018-08-10
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