tav-media/lib/libpag/src/core/native-image.js

Cross platform media editing framework

var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
    function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }
    return new (P || (P = Promise))(function (resolve, reject) {
        function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
        function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
        function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }
        step((generator = generator.apply(thisArg, _arguments || [])).next());
    });
};
import { releaseCanvas2D } from '../utils/canvas';
export class NativeImage {
    constructor(source, reuse = false) {
        this.source = source;
        this.reuse = reuse;
    }
    static createFromBytes(bytes) {
        return __awaiter(this, void 0, void 0, function* () {
            const blob = new Blob([bytes], { type: 'image/*' });
            return new Promise((resolve) => {
                const image = new Image();
                image.onload = function () {
                    resolve(new NativeImage(image));
                };
                image.onerror = function () {
                    console.error('image create from bytes error.');
                    resolve(null);
                };
                image.src = URL.createObjectURL(blob);
            });
        });
    }
    static createFromPath(path) {
        return __awaiter(this, void 0, void 0, function* () {
            return new Promise((resolve) => {
                const image = new Image();
                image.onload = function () {
                    resolve(new NativeImage(image));
                };
                image.onerror = function () {
                    console.error(`image create from path error: ${path}`);
                    resolve(null);
                };
                image.src = path;
            });
        });
    }
    width() {
        return window.HTMLVideoElement && this.source instanceof HTMLVideoElement
            ? this.source.videoWidth
            : this.source.width;
    }
    height() {
        return window.HTMLVideoElement && this.source instanceof HTMLVideoElement
            ? this.source.videoHeight
            : this.source.height;
    }
    upload(GL) {
        var _a;
        const gl = (_a = GL.currentContext) === null || _a === void 0 ? void 0 : _a.GLctx;
        gl.pixelStorei(gl.UNPACK_PREMULTIPLY_ALPHA_WEBGL, true);
        gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, gl.RGBA, gl.UNSIGNED_BYTE, this.source);
    }
    onDestroy() {
        if (this.reuse) {
            releaseCanvas2D(this.source);
        }
    }
}