C6 adidas done

C/C5 and C6 Adidas/product/decode_main.c

@@ -1,51 +1,45 @@
 #include "decode.h"
 #include <stdio.h>
-#include <stdbool.h>
+#include <stdint.h>
 
 int decode_main(int argc, char* argv[])
 {
-    bool decoding = true;
     FILE *input_file = fopen(argv[2], "rb");
-    if (input_file == NULL) {
+    if (!input_file) {
         fprintf(stderr, "Error opening input file: %s\n", argv[2]);
         return 1;
     }
     FILE *output_file = fopen(argv[3], "wb");
-    if (output_file == NULL) {
+    if (!output_file) {
         fprintf(stderr, "Error opening output file: %s\n", argv[3]);
         fclose(input_file);
         return 1;
     }
-    while (decoding)
-    {
-        // Read data 
-        unsigned char data[1024];
-        unsigned char buffer_High[sizeof(data)/2];
-        unsigned char buffer_Low[sizeof(data)/2];
-        size_t bytes_read = fread(&data, 1, sizeof(data), input_file);
-        for (size_t i = 0; i < bytes_read; i++) {
-            buffer_High[i] = data[i + (sizeof(data)/2)];
-            buffer_Low[i] = data[i];
-        }
 
-
-        if (bytes_read == 0) {
-            if (feof(input_file)) {
-                decoding = false; // eof reached
-            } else {
-                fprintf(stderr, "Error reading from input file\n");
+    uint8_t buffer[2048], decoded[1024];
+    size_t bytes_read;
+    //    // b_r 
+    while ((bytes_read = fread(buffer, 1, sizeof(buffer), input_file)) > 0) {
+        if (bytes_read % 2 != 0) { //odd check
+            size_t extra = fread(buffer + bytes_read, 1, 1, input_file);
+            if (extra == 1) { // successfully read 
+                bytes_read++;
+            } else { // error reading the extra byte
                 fclose(input_file);
                 fclose(output_file);
                 return 1;
             }
         }
 
-        // Decode data
-        unsigned char decoded_data[sizeof(data)];
-        decoded_data[sizeof(data)] = decode_combine_nibbles(*buffer_High, *buffer_Low);
-        
-        // Write data
-        fwrite(decoded_data, 1, bytes_read, output_file);
+        size_t decoded_size = bytes_read / 2;
+        for (size_t i = 0; i < decoded_size; i++) {
+            decoded[i] = decode_combine_nibbles(buffer[i], buffer[i + decoded_size]);
+        }
+        fwrite(decoded, 1, decoded_size, output_file);
     }
+
+    fclose(input_file);
+    fclose(output_file);
+    printf("Decoding completed successfully.\n");
     return 0;
 }