--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Meerwald-dir/wavelet.h	Fri Dec 20 13:08:59 2024 +0100
@@ -0,0 +1,307 @@
+#ifndef WAVELET_H
+
+#include <stdio.h>
+
+extern char dbgstr[1000];
+
+/* this are internal functions - don't use 'em! */
+void out_dbg_str(const char *str);
+void start_trace(void);
+void stop_trace(void);
+void flush_trace_file(void);
+
+/* public functions / macros */
+#define StartTrace
+#define StopTrace
+
+#define Trace(str)
+#define TraceVar(str,var)
+
+#define Entering
+#define Leaving
+#define LeavingErr
+#define FlushTrace
+
+#define Warning(str)
+
+#define PreCondition(exp,str)
+#define PostCondition(exp,str)
+
+/* Note that if an error is added, an errormessage for this specific
+   error must also be added. Otherwise no appropriate message can
+   be displayed in an error window. ( Then "Unknown error ocurred"
+   will be displayed.)
+   The errormessage must be added to the case-construct in the 
+   procedure err_GetErrorMessage
+*/   
+
+typedef enum
+{
+        Error_NoError,          /* No Error has happened. */
+        Error_NotImplemented,   /* A needed part has not (yet) been 
+                                   implemented */
+        Error_AssertionFailed,  /* An assertion, pre- or postcondition failed. 
+                                   Occurs only in buggy programs. */
+        Error_NotEnoughMemory,   /* We can't allocate the memory we need. */
+
+        Error_Limitation,       /* Some limitation exceeded, e.g. a string
+                                   variable is too short */
+
+
+	Error_CantOpenFile,	/* The file cannot be opened */
+	Error_CantCreateFile,
+        Error_CantWriteIntoFile,
+	Error_CantCloseFile,
+	Error_WrongFileFormat,
+
+	Error_WidthOrHeightZero,
+	Error_CompressedZeroContent,
+	Error_OriginalZeroContent,
+
+	Error_InternalError
+
+}Error;	
+	
+
+/************************************************************************/
+/*      Functionname:           err_simple_message                      */
+/* -------------------------------------------------------------------- */
+/*      Parameter:                                                      */
+/*          char *: string that contains information about an           */
+/*                  error the user should know.                         */
+/* -------------------------------------------------------------------- */
+/*      Description:                                                    */
+/*          Prints error messages for the user.                         */
+/************************************************************************/
+void err_SimpleMessage(char *message);
+
+/************************************************************************/
+/*      Functionname:           err_get_message                         */
+/* -------------------------------------------------------------------- */
+/*      Return value:   Errormessage for this specific error.           */
+/*      Parameter:                                                      */
+/*          Error err:  Error whose errormessage should be returned     */
+/* -------------------------------------------------------------------- */
+/*      Description:                                                    */
+/************************************************************************/
+char * err_GetErrorMessage(Error err);
+
+#include <stddef.h>
+
+typedef double Pixel;
+
+typedef struct Image_struct {
+	Pixel *data;
+	int width,height;
+
+	/* redundant, for our fun only :-) */
+	Pixel min_val,max_val;   /* range of pixel-values in data */
+                                 /* [min_val..max_val] */
+	int size;   /* = width * height */
+	int bpp;    /* bits per pixel of original image */
+	} *Image;
+
+typedef unsigned int IntPixel;
+
+typedef struct IntImage_struct {
+	IntPixel *data;
+	int width, height;
+
+	/* redundant, for our fun only :-) */
+	IntPixel min_val,max_val;   /* range of values in data */
+                                    /* [min_val..max_val] */
+	int size;   /* = width * height */
+	int bpp;    /* bits per pixel of original image */
+	} *IntImage;
+
+typedef struct Image_tree_struct {
+	double entropy;
+	struct Image_tree_struct *coarse,*horizontal,*vertical,*diagonal,*doubletree;
+	Image image;
+	int level;
+	int flag;
+
+	void *codec_data;
+	IntImage significance_map;
+	} *Image_tree;
+
+typedef struct Image_info_struct {
+	Pixel min,max,mean,var,rms;
+	} *Image_info;
+
+enum zigzag_direction {zigzag_up,zigzag_down,zigzag_right,zigzag_left};
+
+typedef struct Zigzag_data_struct {
+	int x,y,w,h;
+	enum zigzag_direction dir;
+	} *Zigzag_data;
+
+#define get_intpixel(image,x,y) ( ((image)==NULL || \
+	(x)<0 || (x)>=(image)->width || (y)<0 || (y)>=(image)->height) \
+	? (IntPixel) 0 : (image)->data[(x)+(y)*(image)->width])
+
+#define set_intpixel(image,x,y,val) if (!((image)==NULL || \
+	(x)<0 || (x)>=(image)->width || (y)<0 || (y)>=(image)->height)) \
+	(image)->data[(x)+(y)*(image)->width]=(IntPixel) (val)
+
+#define get_pixel(image,x,y) ( ((image)==NULL || \
+	(x)<0 || (x)>=(image)->width || (y)<0 || (y)>=(image)->height) \
+	? (Pixel) 0 : (image)->data[(x)+(y)*(image)->width])
+
+#define set_pixel(image,x,y,val) if (!((image)==NULL || \
+	(x)<0 || (x)>=(image)->width || (y)<0 || (y)>=(image)->height)) \
+	(image)->data[(x)+(y)*(image)->width]=(Pixel) (val)
+
+#define get_pixel_adr(image,x,y) ( ((image)==NULL || \
+	(x)<0 || (x)>=(image)->width || (y)<0 || (y)>=(image)->height) \
+	? (Pixel*) NULL : (image)->data+((x)+(y)*(image)->width))
+
+/* functions: */
+
+IntImage new_intimage(int width, int height);
+IntImage load_intimage(char *file, int max_val);
+void free_intimage(IntImage img);
+
+void clear_intimage(IntImage img);
+void copy_into_intimage(IntImage img1,IntImage img2,int x,int y);
+void copy_part_of_intimage(IntImage img1,IntImage img2,int x,int y);
+
+Image new_image(int width, int height);
+void free_image(Image img);
+void clear_image(Image img);
+void copy_into_image(Image img1,Image img2,int x,int y);
+void scale_image(Image img,int maximum);
+void copy_part_of_image(Image img1,Image img2,int x,int y);
+
+void copy_part_of_image_into_image(
+				Image dest_img, int dest_x, int dest_y,
+				Image src_img, int src_x, int src_y,
+				int width, int height);
+
+
+int string_to_pixel(char *str, Pixel *p);
+
+Image load_image(char *file, int max_val);
+int save_image_P5(char *file, Image img);
+
+Image intimage_to_image(IntImage i);
+IntImage image_to_intimage(Image i);
+
+Image_tree new_image_tree();
+void free_image_tree(Image_tree t);
+
+Image get_difference_image(Image image1, Image image2);
+
+void get_image_infos(Image image, Image_info info);
+
+void get_intimage_infos(IntImage image, IntPixel *min, IntPixel *max, Pixel *avg, Pixel *var);
+
+void init_zigzag(Zigzag_data zz, int width, int height);
+void next_zigzag(Zigzag_data zz);
+Image get_absolute_image_scaled(Image img);
+
+/* common macros */
+
+#ifndef MIN
+#define MIN(a,b) ((a)<(b)?(a):(b))
+#endif
+
+#ifndef MAX
+#define MAX(a,b) ((a)>(b)?(a):(b))
+#endif
+
+enum FilterType { FTNoSymm, FTSymm, FTAntiSymm};
+
+typedef struct FilterStruct {
+	enum FilterType type;
+	int hipass;
+	Pixel * data;
+	int start,end;
+
+	int len;
+	} *Filter;
+
+Filter new_filter(int size);
+
+int filter_cutoff(Image in, int in_start, int in_len, int in_step,
+		Image out, int out_start, int out_len, int out_step,
+		Filter f);
+
+int filter_inv_cutoff(Image in, int in_start, int in_len, int in_step,
+		Image out, int out_start, int out_len, int out_step,
+		Filter f);
+
+int filter_periodical(Image in, int in_start, int in_len, int in_step,
+		Image out, int out_start, int out_len, int out_step,
+		Filter f);
+
+int filter_inv_periodical(Image in, int in_start, int in_len, int in_step,
+		Image out, int out_start, int out_len, int out_step,
+		Filter f);
+
+int filter_mirror(Image in, int in_start, int in_len, int in_step,
+		Image out, int out_start, int out_len, int out_step,
+		Filter f);
+
+int filter_inv_mirror(Image in, int in_start, int in_len, int in_step,
+		Image out, int out_start, int out_len, int out_step,
+		Filter f);
+
+Pixel get_filter_center(Filter f);
+
+enum FilterGHType { FTOrtho, FTBiOrtho, FTOther};
+
+typedef struct FilterGHStruct {
+	enum FilterGHType type;
+	Filter g, h, gi, hi;
+	char *name;
+	} *FilterGH;
+
+typedef struct AllFilterStruct {
+	FilterGH *filter;
+	int count;
+	} *AllFilters;
+
+
+AllFilters load_filters(char *name);
+
+typedef struct SegmentsStruct	{
+		int width,height; /* segment width & height*/
+		int *data;
+	} *Segments;
+	
+enum FilterMethod{cutoff,inv_cutoff,periodical,inv_periodical,mirror,inv_mirror};
+
+enum Information_Cost{threshold,log_energy,entropy,norml,norml2,gauss_markov,
+		shanon,weak_l,weak_lq,compression_number,compression_numberq,
+		compression_area,compression_areaq,sdiscrepancy,discrepancy,concentration};
+
+Image_tree wavelettransform(Image original,int level,FilterGH *flt,enum FilterMethod method);
+Image_tree wavelettransform_wp(Image original,int level,FilterGH *flt,enum FilterMethod method);
+                            
+Image_tree best_basis(Image original,int level,FilterGH *flt,
+				enum FilterMethod method,enum Information_Cost cost,double epsilon);
+				                             
+Image_tree best_level(Image original,int maxlevel,int *bestlevel,FilterGH *flt,enum FilterMethod method,
+				enum Information_Cost cost,double epsilon);
+
+Image build_image(Image_tree quadtree,int width,int height);
+
+Image inv_transform(Image_tree quadtree,FilterGH *flt,
+                                 enum FilterMethod method);
+
+Image inv_transform_wp(Image_tree quadtree,FilterGH *flt,
+                                 enum FilterMethod method);
+
+int rec_double(Image_tree dtree,int level,FilterGH *flt,enum FilterMethod method,enum Information_Cost cost,double epsilon);
+
+Image_tree decompose_to_level(Image original,int level,FilterGH *flt,enum FilterMethod method);
+
+int decompose_all(Image_tree tree,int maxlevel,FilterGH *flt,enum FilterMethod method,
+				enum Information_Cost cost,double epsilon);
+
+int find_deepest_level(int width,int height);
+
+
+#define WAVELET_H
+#endif