mirror of
https://github.com/psychopy/psychojs.git
synced 2025-05-12 08:38:10 +00:00
422 lines
11 KiB
JavaScript
422 lines
11 KiB
JavaScript
/**
|
|
* Movie Stimulus.
|
|
*
|
|
* @author Alain Pitiot
|
|
* @version 2021.2.0
|
|
* @copyright (c) 2017-2020 Ilixa Ltd. (http://ilixa.com) (c) 2020-2021 Open Science Tools Ltd. (https://opensciencetools.org)
|
|
* @license Distributed under the terms of the MIT License
|
|
*/
|
|
|
|
import * as PIXI from "pixi.js-legacy";
|
|
import { PsychoJS } from "../core/PsychoJS.js";
|
|
import { Color } from "../util/Color.js";
|
|
import { ColorMixin } from "../util/ColorMixin.js";
|
|
import { to_pixiPoint } from "../util/Pixi.js";
|
|
import * as util from "../util/Util.js";
|
|
import { VisualStim } from "./VisualStim.js";
|
|
|
|
/**
|
|
* Movie Stimulus.
|
|
*
|
|
* @name module:visual.MovieStim
|
|
* @class
|
|
* @extends VisualStim
|
|
* @param {Object} options
|
|
* @param {String} options.name - the name used when logging messages from this stimulus
|
|
* @param {module:core.Window} options.win - the associated Window
|
|
* @param {string | HTMLVideoElement} options.movie - the name of the movie resource or the HTMLVideoElement corresponding to the movie
|
|
* @param {string} [options.units= "norm"] - the units of the stimulus (e.g. for size, position, vertices)
|
|
* @param {Array.<number>} [options.pos= [0, 0]] - the position of the center of the stimulus
|
|
* @param {string} [options.units= 'norm'] - the units of the stimulus vertices, size and position
|
|
* @param {number} [options.ori= 0.0] - the orientation (in degrees)
|
|
* @param {number} [options.size] - the size of the rendered image (the size of the image will be used if size is not specified)
|
|
* @param {Color} [options.color= Color('white')] the background color
|
|
* @param {number} [options.opacity= 1.0] - the opacity
|
|
* @param {number} [options.contrast= 1.0] - the contrast
|
|
* @param {boolean} [options.interpolate= false] - whether or not the image is interpolated
|
|
* @param {boolean} [options.flipHoriz= false] - whether or not to flip horizontally
|
|
* @param {boolean} [options.flipVert= false] - whether or not to flip vertically
|
|
* @param {boolean} [options.loop= false] - whether or not to loop the movie
|
|
* @param {number} [options.volume= 1.0] - the volume of the audio track (must be between 0.0 and 1.0)
|
|
* @param {boolean} [options.noAudio= false] - whether or not to play the audio
|
|
* @param {boolean} [options.autoPlay= true] - whether or not to autoplay the video
|
|
* @param {boolean} [options.autoDraw= false] - whether or not the stimulus should be automatically drawn on every frame flip
|
|
* @param {boolean} [options.autoLog= false] - whether or not to log
|
|
*
|
|
* @todo autoPlay does not work for the moment.
|
|
*/
|
|
export class MovieStim extends VisualStim
|
|
{
|
|
constructor({ name, win, movie, pos, units, ori, size, color, opacity, contrast, interpolate, flipHoriz, flipVert, loop, volume, noAudio, autoPlay, autoDraw, autoLog } = {})
|
|
{
|
|
super({ name, win, units, ori, opacity, pos, size, autoDraw, autoLog });
|
|
|
|
this.psychoJS.logger.debug("create a new MovieStim with name: ", name);
|
|
|
|
// movie and movie control:
|
|
this._addAttribute(
|
|
"movie",
|
|
movie,
|
|
);
|
|
this._addAttribute(
|
|
"volume",
|
|
volume,
|
|
1.0,
|
|
this._onChange(false, false),
|
|
);
|
|
this._addAttribute(
|
|
"noAudio",
|
|
noAudio,
|
|
false,
|
|
this._onChange(false, false),
|
|
);
|
|
this._addAttribute(
|
|
"autoPlay",
|
|
autoPlay,
|
|
true,
|
|
this._onChange(false, false),
|
|
);
|
|
|
|
this._addAttribute(
|
|
"flipHoriz",
|
|
flipHoriz,
|
|
false,
|
|
this._onChange(false, false),
|
|
);
|
|
this._addAttribute(
|
|
"flipVert",
|
|
flipVert,
|
|
false,
|
|
this._onChange(false, false),
|
|
);
|
|
this._addAttribute(
|
|
"interpolate",
|
|
interpolate,
|
|
false,
|
|
this._onChange(true, false),
|
|
);
|
|
|
|
// colors:
|
|
this._addAttribute(
|
|
"color",
|
|
color,
|
|
"white",
|
|
this._onChange(true, false),
|
|
);
|
|
this._addAttribute(
|
|
"contrast",
|
|
contrast,
|
|
1.0,
|
|
this._onChange(true, false),
|
|
);
|
|
this._addAttribute(
|
|
"loop",
|
|
loop,
|
|
false,
|
|
this._onChange(false, false),
|
|
);
|
|
|
|
// estimate the bounding box:
|
|
this._estimateBoundingBox();
|
|
|
|
// check whether the fastSeek method on HTMLVideoElement is implemented:
|
|
const videoElement = document.createElement("video");
|
|
this._hasFastSeek = (typeof videoElement.fastSeek === "function");
|
|
|
|
if (this._autoLog)
|
|
{
|
|
this._psychoJS.experimentLogger.exp(`Created ${this.name} = ${this.toString()}`);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Setter for the movie attribute.
|
|
*
|
|
* @name module:visual.MovieStim#setMovie
|
|
* @public
|
|
* @param {string | HTMLVideoElement} movie - the name of the movie resource or a
|
|
* HTMLVideoElement
|
|
* @param {boolean} [log= false] - whether of not to log
|
|
*/
|
|
setMovie(movie, log = false)
|
|
{
|
|
const response = {
|
|
origin: "MovieStim.setMovie",
|
|
context: "when setting the movie of MovieStim: " + this._name,
|
|
};
|
|
|
|
try
|
|
{
|
|
// movie is undefined: that's fine but we raise a warning in case this is a symptom of an actual problem
|
|
if (typeof movie === "undefined")
|
|
{
|
|
this.psychoJS.logger.warn("setting the movie of MovieStim: " + this._name + " with argument: undefined.");
|
|
this.psychoJS.logger.debug("set the movie of MovieStim: " + this._name + " as: undefined");
|
|
}
|
|
else
|
|
{
|
|
// movie is a string: it should be the name of a resource, which we load
|
|
if (typeof movie === "string")
|
|
{
|
|
movie = this.psychoJS.serverManager.getResource(movie);
|
|
}
|
|
|
|
// movie should now be an actual HTMLVideoElement: we raise an error if it is not
|
|
if (!(movie instanceof HTMLVideoElement))
|
|
{
|
|
throw "the argument: " + movie.toString() + ' is not a video" }';
|
|
}
|
|
|
|
this.psychoJS.logger.debug(`set the movie of MovieStim: ${this._name} as: src= ${movie.src}, size= ${movie.videoWidth}x${movie.videoHeight}, duration= ${movie.duration}s`);
|
|
|
|
// ensure we have only one onended listener per HTMLVideoElement (we can have several
|
|
// MovieStim with the same underlying HTMLVideoElement)
|
|
// https://stackoverflow.com/questions/11455515
|
|
if (!movie.onended)
|
|
{
|
|
movie.onended = () =>
|
|
{
|
|
this.status = PsychoJS.Status.FINISHED;
|
|
};
|
|
}
|
|
}
|
|
|
|
this._setAttribute("movie", movie, log);
|
|
this._needUpdate = true;
|
|
this._needPixiUpdate = true;
|
|
}
|
|
catch (error)
|
|
{
|
|
throw Object.assign(response, { error });
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Reset the stimulus.
|
|
*
|
|
* @param {boolean} [log= false] - whether of not to log
|
|
*/
|
|
reset(log = false)
|
|
{
|
|
this.status = PsychoJS.Status.NOT_STARTED;
|
|
this._movie.pause();
|
|
this.seek(0, log);
|
|
}
|
|
|
|
/**
|
|
* Start playing the movie.
|
|
*
|
|
* @param {boolean} [log= false] - whether of not to log
|
|
*/
|
|
play(log = false)
|
|
{
|
|
this.status = PsychoJS.Status.STARTED;
|
|
|
|
// As found on https://goo.gl/LdLk22
|
|
const playPromise = this._movie.play();
|
|
|
|
if (playPromise !== undefined)
|
|
{
|
|
playPromise.catch((error) =>
|
|
{
|
|
throw {
|
|
origin: "MovieStim.play",
|
|
context: `when attempting to play MovieStim: ${this._name}`,
|
|
error,
|
|
};
|
|
});
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Pause the movie.
|
|
*
|
|
* @param {boolean} [log= false] - whether of not to log
|
|
*/
|
|
pause(log = false)
|
|
{
|
|
this.status = PsychoJS.Status.STOPPED;
|
|
this._movie.pause();
|
|
}
|
|
|
|
/**
|
|
* Stop the movie and reset to 0s.
|
|
*
|
|
* @param {boolean} [log= false] - whether of not to log
|
|
*/
|
|
stop(log = false)
|
|
{
|
|
this.status = PsychoJS.Status.STOPPED;
|
|
this._movie.pause();
|
|
this.seek(0, log);
|
|
}
|
|
|
|
/**
|
|
* Jump to a specific timepoint
|
|
*
|
|
* <p>Note: seek is experimental and does not work on all browsers at the moment.</p>
|
|
*
|
|
* @param {number} timePoint - the timepoint to which to jump (in second)
|
|
* @param {boolean} [log= false] - whether of not to log
|
|
*/
|
|
seek(timePoint, log = false)
|
|
{
|
|
if (timePoint < 0 || timePoint > this._movie.duration)
|
|
{
|
|
throw {
|
|
origin: "MovieStim.seek",
|
|
context: `when seeking to timepoint: ${timePoint} of MovieStim: ${this._name}`,
|
|
error: `the timepoint does not belong to [0, ${this._movie.duration}`,
|
|
};
|
|
}
|
|
|
|
if (this._hasFastSeek)
|
|
{
|
|
this._movie.fastSeek(timePoint);
|
|
}
|
|
else
|
|
{
|
|
try
|
|
{
|
|
this._movie.currentTime = timePoint;
|
|
}
|
|
catch (error)
|
|
{
|
|
throw {
|
|
origin: "MovieStim.seek",
|
|
context: `when seeking to timepoint: ${timePoint} of MovieStim: ${this._name}`,
|
|
error,
|
|
};
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Estimate the bounding box.
|
|
*
|
|
* @name module:visual.ImageStim#_estimateBoundingBox
|
|
* @function
|
|
* @override
|
|
* @protected
|
|
*/
|
|
_estimateBoundingBox()
|
|
{
|
|
const size = this._getDisplaySize();
|
|
if (typeof size !== "undefined")
|
|
{
|
|
this._boundingBox = new PIXI.Rectangle(
|
|
this._pos[0] - size[0] / 2,
|
|
this._pos[1] - size[1] / 2,
|
|
size[0],
|
|
size[1],
|
|
);
|
|
}
|
|
|
|
// TODO take the orientation into account
|
|
}
|
|
|
|
/**
|
|
* Update the stimulus, if necessary.
|
|
*
|
|
* @name module:visual.MovieStim#_updateIfNeeded
|
|
* @private
|
|
*/
|
|
_updateIfNeeded()
|
|
{
|
|
if (!this._needUpdate)
|
|
{
|
|
return;
|
|
}
|
|
this._needUpdate = false;
|
|
|
|
// update the PIXI representation, if need be:
|
|
if (this._needPixiUpdate)
|
|
{
|
|
this._needPixiUpdate = false;
|
|
|
|
if (typeof this._pixi !== "undefined")
|
|
{
|
|
// Leave original video in place
|
|
// https://pixijs.download/dev/docs/PIXI.Sprite.html#destroy
|
|
this._pixi.destroy({
|
|
children: true,
|
|
texture: true,
|
|
baseTexture: false,
|
|
});
|
|
}
|
|
this._pixi = undefined;
|
|
|
|
// no movie to draw: return immediately
|
|
if (typeof this._movie === "undefined")
|
|
{
|
|
return;
|
|
}
|
|
|
|
// create a PixiJS video sprite:
|
|
this._texture = PIXI.Texture.from(this._movie, { resourceOptions: { autoPlay: this.autoPlay } });
|
|
this._pixi = new PIXI.Sprite(this._texture);
|
|
|
|
// since _texture.width may not be immedialy available but the rest of the code needs its value
|
|
// we arrange for repeated calls to _updateIfNeeded until we have a width:
|
|
if (this._texture.width === 0)
|
|
{
|
|
this._needUpdate = true;
|
|
this._needPixiUpdate = true;
|
|
return;
|
|
}
|
|
}
|
|
|
|
// audio:
|
|
this._movie.muted = this._noAudio;
|
|
this._movie.volume = this._volume;
|
|
|
|
// loop:
|
|
this._movie.loop = this._loop;
|
|
|
|
// opacity:
|
|
this._pixi.alpha = this.opacity;
|
|
|
|
// set the scale:
|
|
const displaySize = this._getDisplaySize();
|
|
const size_px = util.to_px(displaySize, this.units, this.win);
|
|
const scaleX = size_px[0] / this._texture.width;
|
|
const scaleY = size_px[1] / this._texture.height;
|
|
this._pixi.scale.x = this.flipHoriz ? -scaleX : scaleX;
|
|
this._pixi.scale.y = this.flipVert ? scaleY : -scaleY;
|
|
|
|
// set the position, rotation, and anchor (movie centered on pos):
|
|
this._pixi.position = to_pixiPoint(this.pos, this.units, this.win);
|
|
this._pixi.rotation = this.ori * Math.PI / 180;
|
|
this._pixi.anchor.x = 0.5;
|
|
this._pixi.anchor.y = 0.5;
|
|
|
|
// re-estimate the bounding box, as the texture's width may now be available:
|
|
this._estimateBoundingBox();
|
|
}
|
|
|
|
/**
|
|
* Get the size of the display image, which is either that of the ImageStim or that of the image
|
|
* it contains.
|
|
*
|
|
* @name module:visual.ImageStim#_getDisplaySize
|
|
* @private
|
|
* @return {number[]} the size of the displayed image
|
|
*/
|
|
_getDisplaySize()
|
|
{
|
|
let displaySize = this.size;
|
|
|
|
if (typeof displaySize === "undefined")
|
|
{
|
|
// use the size of the texture, if we have access to it:
|
|
if (typeof this._texture !== "undefined" && this._texture.width > 0)
|
|
{
|
|
const textureSize = [this._texture.width, this._texture.height];
|
|
displaySize = util.to_unit(textureSize, "pix", this.win, this.units);
|
|
}
|
|
}
|
|
|
|
return displaySize;
|
|
}
|
|
}
|