| 23 | }; |
| 24 | |
| 25 | FfErrorStats ff_analyze_errors(const CRGB *float_leds, const CRGB *fp_leds, int count) { |
| 26 | FfErrorStats stats = {}; |
| 27 | |
| 28 | for (int i = 0; i < count; i++) { |
| 29 | int r_err = abs(static_cast<int>(float_leds[i].r) - static_cast<int>(fp_leds[i].r)); |
| 30 | int g_err = abs(static_cast<int>(float_leds[i].g) - static_cast<int>(fp_leds[i].g)); |
| 31 | int b_err = abs(static_cast<int>(float_leds[i].b) - static_cast<int>(fp_leds[i].b)); |
| 32 | |
| 33 | int pixel_max_err = r_err; |
| 34 | if (g_err > pixel_max_err) pixel_max_err = g_err; |
| 35 | if (b_err > pixel_max_err) pixel_max_err = b_err; |
| 36 | |
| 37 | if (pixel_max_err > 0) { |
| 38 | stats.pixels_with_error++; |
| 39 | stats.avg_error += pixel_max_err; |
| 40 | } |
| 41 | |
| 42 | if (pixel_max_err > stats.max_error) { |
| 43 | stats.max_error = pixel_max_err; |
| 44 | } |
| 45 | |
| 46 | if (pixel_max_err > 1) stats.pixels_over_1bit++; |
| 47 | if (pixel_max_err > 2) stats.pixels_over_2bit++; |
| 48 | if (pixel_max_err > 4) stats.pixels_over_4bit++; |
| 49 | |
| 50 | if (pixel_max_err < 256) stats.histogram[pixel_max_err]++; |
| 51 | } |
| 52 | |
| 53 | stats.total_pixels = count; |
| 54 | if (stats.pixels_with_error > 0) { |
| 55 | stats.avg_error /= stats.pixels_with_error; |
| 56 | } |
| 57 | |
| 58 | double variance = 0.0; |
| 59 | for (int i = 0; i < count; i++) { |
| 60 | int r_err = abs(static_cast<int>(float_leds[i].r) - static_cast<int>(fp_leds[i].r)); |
| 61 | int g_err = abs(static_cast<int>(float_leds[i].g) - static_cast<int>(fp_leds[i].g)); |
| 62 | int b_err = abs(static_cast<int>(float_leds[i].b) - static_cast<int>(fp_leds[i].b)); |
| 63 | |
| 64 | int pixel_max_err = r_err; |
| 65 | if (g_err > pixel_max_err) pixel_max_err = g_err; |
| 66 | if (b_err > pixel_max_err) pixel_max_err = b_err; |
| 67 | |
| 68 | double diff = pixel_max_err - stats.avg_error; |
| 69 | variance += diff * diff; |
| 70 | } |
| 71 | stats.std_dev = fl::sqrt(variance / count); |
| 72 | |
| 73 | return stats; |
| 74 | } |
| 75 | |
| 76 | void ff_print_error_stats(const FfErrorStats &stats, const char *test_name) { |
| 77 | fl::printf("\n=== %s ===\n", test_name); |
no test coverage detected