@henteko/kumiki/dist/scenes/base.js

A video generation tool that creates videos from JSON configurations

import { existsSync } from 'node:fs';
import { mkdir } from 'node:fs/promises';
import path from 'node:path';
import { RenderError } from '../utils/errors.js';
import { logger } from '../utils/logger.js';
export class BaseScene {
    scene;
    options;
    narrationPath;
    constructor(scene, options) {
        this.scene = scene;
        this.options = options;
    }
    /**
     * Get the output path for static image
     */
    getStaticOutputPath() {
        return path.join(this.options.tempDir, `scene_${this.scene.id}.png`);
    }
    /**
     * Get the output path for video
     */
    getVideoOutputPath() {
        return path.join(this.options.tempDir, `scene_${this.scene.id}.mp4`);
    }
    /**
     * Get the output path for narration audio
     */
    getNarrationOutputPath() {
        return path.join(this.options.tempDir, `narration_${this.scene.id}.wav`);
    }
    /**
     * Set the narration audio path
     */
    setNarrationPath(path) {
        this.narrationPath = path;
    }
    /**
     * Ensure the output directory exists
     */
    async ensureOutputDirectory() {
        if (!existsSync(this.options.tempDir)) {
            logger.debug('Creating output directory', { path: this.options.tempDir });
            await mkdir(this.options.tempDir, { recursive: true });
        }
    }
    /**
     * Parse resolution string to width and height
     */
    parseResolution() {
        const [width, height] = this.options.resolution.split('x').map(Number);
        if (!width || !height) {
            throw new RenderError(`Invalid resolution format: ${this.options.resolution}`, 'INVALID_RESOLUTION', { resolution: this.options.resolution });
        }
        return { width, height };
    }
    /**
     * Calculate position coordinates
     */
    calculatePosition(pos, dimension, elementSize) {
        if (pos === 'center') {
            return (dimension - elementSize) / 2;
        }
        return pos;
    }
}
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