imgmagick++ kinda works, but its still slow

lib/nodes/load_image.h

@@ -27,6 +27,11 @@
 #include <cstdint>
 #include <iostream>
 
+#include <ImageMagick-7/Magick++.h>
+
+#include <chrono>
+using namespace std::chrono;
+
 #ifdef __EMSCRIPTEN__
 #include "../emscripten_browser_file.h"
 #endif
@@ -234,16 +239,34 @@ private:
     return static_cast<int>(ret_val);
   }
 
+  void adjustContrast(uint8_t *pixels, uint8_t *out, int width, int height,
+                      double contrastValue) {
+    // Initialize Magick library
+    Magick::InitializeMagick(nullptr);
+
+    // Create a Magick::Image object from the uint8_t* data
+    Magick::Image image(width, height, "RGBA", Magick::CharPixel, pixels);
+
+    // Apply contrast adjustment
+    auto start = high_resolution_clock::now();
+    image.sigmoidalContrast(true, contrastValue); // Increase contrast
+    auto stop = high_resolution_clock::now();
+    auto duration = duration_cast<microseconds>(stop - start);
+    std::cout << duration.count() << std::endl;
+
+    start = high_resolution_clock::now();
+    Magick::Blob blob;
+    image.write(&blob);
+    memcpy(out, blob.data(), width * height * 4);
+    stop = high_resolution_clock::now();
+    duration = duration_cast<microseconds>(stop - start);
+    std::cout << duration.count() << std::endl;
+  }
+
   void compute(uint8_t *input, uint8_t *output, int size, int channels) {
     int nBval = brightnessVal + 256;
-    for (int i = 0; i < size; i += channels) {
-      uint8_t r = std::clamp(formula(input[i], brightnessVal), 0, 255);
-      uint8_t g = std::clamp(formula(input[i + 1], brightnessVal), 0, 255);
-      uint8_t b = std::clamp(formula(input[i + 2], brightnessVal), 0, 255);
-      output[i] = r;
-      output[i + 1] = g;
-      output[i + 2] = b;
-    }
+    adjustContrast(input, output, returnBundle.width, returnBundle.height,
+                   nBval);
   }
 
   int brightnessVal = 0;
@@ -467,8 +490,8 @@ public:
     }
 #else
     if (bundle.fname == "") {
-      handle_upload_file_local(
-          "/Users/tanishqdubey/Downloads/Odd-eyed_cat_by_ihasb33r.jpg", this);
+      handle_upload_file_local("/Users/tanishqdubey/Pictures/DSC06956.JPG",
+                               this);
     }
 #endif
     if (bundle.fname != "") {