Siv3D.js

mergeInto(LibraryManager.library, {
    glfwGetKeysSiv3D: function (windowid) {
        var window = GLFW.WindowFromId(windowid);
        if (!window) return 0;
        if (!window.keysBuffer) {
            window.keysBuffer = Module._malloc(349 /* GLFW_KEY_LAST + 1 */)
        }
        Module.HEAPU8.set(window.keys, window.keysBuffer);
        return window.keysBuffer;
    },
    glfwGetKeysSiv3D__sig: "ii",

    $videoElements: [],

    s3dOpenVideo: function(callback, callbackArg) {
        const constraint = {
            video: true,
            audio: false
        };

        navigator.mediaDevices.getUserMedia(constraint).then(
            stream => {
                const video = document.createElement("video");

                video.addEventListener('canplay', function() {
                    const idx = GL.getNewId(videoElements);

                    video.removeEventListener('canplay', arguments.callee);
                    videoElements[idx] = video;

                    if (callback) dynCall_vii(callback, callbackArg, idx);
                });

                video.srcObject = stream;                      
            }
        ).catch(_ => {
            if (callback) dynCall_vii(callback, callbackArg, 0);
        })
    },
    s3dOpenVideo__sig: "vii",
    s3dOpenVideo__deps: ["$videoElements"],

    s3dBindVideo: function(target, level, internalFormat, width, height, border, format, type, idx) {
        const video = videoElements[idx];
        GLctx.texImage2D(target, level, internalFormat, width, height, border, format, type, video);
    },
    s3dBindVideo__sig: "viiiiiiiii",
    s3dBindVideo__deps: ["$videoElements"],

    s3dPlayVideo: function(idx, callback, callbackArg) {
        const video = videoElements[idx];
        video.play().then(
            () => {
                if (callback) dynCall_vii(callback, callbackArg, 1);
            }
        ); 
    },
    s3dPlayVideo__sig: "vi",
    s3dPlayVideo__deps: ["$videoElements"],

    s3dStopVideo: function(idx) {
        const video = videoElements[idx];

        let stream = video.srcObject;
        let tracks = stream.getTracks();
      
        tracks.forEach(function(track) {
            track.stop();
        });
    },
    s3dStopVideo__sig: "vi",
    s3dStopVideo__deps: ["$videoElements"]
});