Stack image types as much as you want

Create a copy of the image before modifying it for temperature calibration

README.md

@@ -62,7 +62,7 @@ Apply a falsecolor palette
 ### Arguments
 
 ```
--i [r|a|b|t|m|p] Output type (stackable*)
+-i [r|a|b|t|m|p] Output type (stackable)
 -e [t|h|l|d|p|f] Effects (stackable)
 -o <path>        Output filename
 -d <path>        Destination directory
@@ -73,7 +73,6 @@ Apply a falsecolor palette
 -g               Gamma adjustment (1.0 = off)
 -k               Map offset (in px, default: 0)
 ```
-\* Should work with all combinations, but temperature needs to be done last as it calibrates the buffer
 
 ### Image output types
 

src/main.c

@@ -227,8 +227,16 @@ static int processAudio(char *filename, options_t *opts){
 
 	// Temperature
 	if (CONTAINS(opts->type, Temperature) && img.chB >= 4) {
-		temperature(opts, &img, CHB_OFFSET, CH_WIDTH);
-		ImageOut(opts, &img, CHB_OFFSET, CH_WIDTH, "Temperature", Temperature, (char *)TempPalette);
+		// Create another buffer as to not modify the orignal
+		image_t tmpimg = img;
+		for(int i = 0; i < img.nrow; i++){
+			tmpimg.prow[i] = (float *) malloc(sizeof(float) * 2150);
+			memcpy(tmpimg.prow[i], img.prow[i], sizeof(float) * 2150);
+		}
+
+		// Perform temperature calibration
+		temperature(opts, &tmpimg, CHB_OFFSET, CH_WIDTH);
+		ImageOut(opts, &tmpimg, CHB_OFFSET, CH_WIDTH, "Temperature", Temperature, (char *)TempPalette);
 	}
 
 	// MCIR