Removing explicit progressive support

README.md

@@ -41,7 +41,6 @@ typedef struct cs_jpeg_pars
 	int quality;
 	bool exif_copy;
 	int dct_method;
-	bool progressive;
 } cs_jpeg_pars;
 ```
 The first 3 parameters matters, in term of compression, while the others will be set by the compressor/decompressor
@@ -49,7 +48,6 @@ during the compression progress and thus they will be overwritten.
 - **quality**: in a range from 0 to 100, the quality of the resulting image. **Note** that 0 means _optimization_ (see below). Default: 0.
 - **exif_copy**: set it to _true_ to copy EXIF tag info after compression. Default: false.
 - **dct_method**: one of the turbojpeg DCT flags. Default: TJFLAG_FASTDCT.
-- **progressive**: set to _true_ to output a progressive JPEG, _false_ for scanline. Default: false.
 
 ### PNG
 ```C

caesium/caesium.c

@@ -6,7 +6,7 @@
 #include "png.h"
 #include "jpeg.h"
 
-bool cs_compress(const char *input_path, char *output_path, cs_image_pars *options)
+bool cs_compress(const char *input_path, const char *output_path, cs_image_pars *options)
 {
 	FILE *pInputFile;
 	image_type type;
@@ -21,12 +21,6 @@ bool cs_compress(const char *input_path, char *output_path, cs_image_pars *optio
 
 	fclose(pInputFile);
 
-	//Same input and output, we need to use a temporary file
-	if (strcmp(input_path, output_path) == 0) {
-		output_path = realloc(output_path, (strlen(output_path) + 4) * sizeof(char));
-		snprintf(output_path, strlen(output_path) + 4, "%s.cs", output_path);
-	}
-
 	if (type == UNKN) {
 		display_error(WARNING, 103);
 	} else if (type == CS_JPEG) {
@@ -51,7 +45,6 @@ void initialize_jpeg_parameters(cs_image_pars *options)
 	options->jpeg.quality = 0;
 	options->jpeg.exif_copy = false;
 	options->jpeg.dct_method = 2048;
-	options->jpeg.progressive = false;
 }
 
 void initialize_png_parameters(cs_image_pars *par)

caesium/caesium.h

@@ -13,7 +13,6 @@ typedef struct cs_jpeg_pars
 	int quality;
 	bool exif_copy;
 	int dct_method;
-	bool progressive;
 	/*
 	 * Parameters you have no reason to set as they will be
 	 * overwritten during the process
@@ -53,7 +52,7 @@ typedef enum error_level
 	WARNING = 1
 } error_level;
 
-bool cs_compress(const char *input_path, char *output_path, cs_image_pars *options);
+bool cs_compress(const char *input_path, const char *output_path, cs_image_pars *options);
 cs_image_pars initialize_parameters();
 
 #ifdef __cplusplus

caesium/jpeg.c

@@ -96,11 +96,6 @@ bool cs_jpeg_optimize(const char *input_file, const char *output_file, cs_jpeg_p
 
 	//CRITICAL - This is the optimization step
 	dstinfo.optimize_coding = true;
-	//TODO
-	//Progressive
-	if (options->progressive) {
-		jpeg_simple_progression(&dstinfo);
-	}
 
 	//Set the output file parameters
 	jpeg_stdio_dest(&dstinfo, fp);

demo/main.c

@@ -16,7 +16,7 @@ int main(int argc, char *argv[])
 	}
 
 	cs_image_pars options = initialize_parameters();
-	cs_compress(argv[1], argv[2], &options);
+	bool result = cs_compress(argv[1], argv[2], &options);
 
-	exit(EXIT_SUCCESS);
+	exit(result);
 }