| 1 | /** |
| 2 | * Shared utility functions for PPT export |
| 3 | */ |
| 4 | |
| 5 | /** |
| 6 | * Get optimal pixelRatio for image capture based on device capability |
| 7 | * Uses 2x for low-end devices to reduce memory usage and improve performance |
| 8 | * Uses 3x for high-end devices for best quality |
| 9 | */ |
| 10 | export function getOptimalPixelRatio(): number { |
| 11 | // Check device memory (Chrome/Edge only) |
| 12 | const deviceMemory = (navigator as { deviceMemory?: number }).deviceMemory; |
| 13 | if (deviceMemory && deviceMemory <= 4) { |
| 14 | return 2; // Low memory device |
| 15 | } |
| 16 | |
| 17 | // Check CPU cores |
| 18 | const hardwareConcurrency = navigator.hardwareConcurrency; |
| 19 | if (hardwareConcurrency && hardwareConcurrency <= 4) { |
| 20 | return 2; // Limited CPU |
| 21 | } |
| 22 | |
| 23 | return 3; // High-end device |
| 24 | } |
| 25 |