imgmagick++ kinda works, but its still slow

Makefile

@@ -21,11 +21,11 @@ SOURCES += $(wildcard $(IMGUI_DIR)/*.cpp)
 SOURCES += $(wildcard $(IMGUI_DIR)/backends/*.cpp)
 OBJS = $(addsuffix .o, $(basename $(notdir $(SOURCES))))
 UNAME_S := $(shell uname -s)
-LINUX_GL_LIBS = -lGL
+LINUX_GL_LIBS = -lGL 
 
 CXXFLAGS = -std=c++20 -I$(IMGUI_DIR) -I$(IMGUI_DIR)/backends
-CXXFLAGS += -g -DIMGUI_DEFINE_MATH_OPERATORS -Ofast
-LIBS =
+CXXFLAGS += -g -DIMGUI_DEFINE_MATH_OPERATORS -Ofast -Xpreprocessor -fopenmp -DMAGICKCORE_HDRI_ENABLE=1 -DMAGICKCORE_QUANTUM_DEPTH=16 -DMAGICKCORE_CHANNEL_MASK_DEPTH=32 -I/opt/homebrew/Cellar/imagemagick/7.1.1-32/include/ImageMagick-7
+LIBS = -L/opt/homebrew/Cellar/imagemagick/7.1.1-32/lib -lMagick++-7.Q16HDRI -lMagickWand-7.Q16HDRI -lMagickCore-7.Q16HDRI
 
 ##---------------------------------------------------------------------
 ## OPENGL ES

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 != "") {

main.cpp

@@ -44,11 +44,12 @@
 #endif
 
 #include "lib/ImNodeFlow.h"
+#include <ImageMagick-7/Magick++.h>
 
 static bool init = true;
 
 // Main code
-int main(int, char **) {
+int main(int, char **argv) {
   // Setup SDL
   if (SDL_Init(SDL_INIT_VIDEO | SDL_INIT_TIMER | SDL_INIT_GAMECONTROLLER) !=
       0) {
@@ -56,6 +57,8 @@ int main(int, char **) {
     return -1;
   }
 
+  Magick::InitializeMagick(*argv);
+
   // Decide GL+GLSL versions
 #if defined(IMGUI_IMPL_OPENGL_ES2)
   // GL ES 2.0 + GLSL 100