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* linguist-vendored |
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/* autotrace.c --- Autotrace API | ||
Copyright (C) 2000, 2001, 2002 Martin Weber | ||
The author can be contacted at <[email protected]> | ||
This program is free software; you can redistribute it and/or modify | ||
it under the terms of the GNU General Public License as published by | ||
the Free Software Foundation; either version 2 of the License, or | ||
(at your option) any later version. | ||
This program is distributed in the hope that it will be useful, | ||
but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
GNU General Public License for more details. | ||
You should have received a copy of the GNU General Public License | ||
along with this program; if not, write to the Free Software | ||
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ | ||
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#ifdef HAVE_CONFIG_H | ||
#include "config.h" | ||
#endif /* Def: HAVE_CONFIG_H */ | ||
#include "intl.h" | ||
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#include "private.h" | ||
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#include "autotrace.h" | ||
#include "exception.h" | ||
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#include "fit.h" | ||
#include "bitmap.h" | ||
#include "spline.h" | ||
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#include "input.h" | ||
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#include "xstd.h" | ||
#include "image-header.h" | ||
#include "image-proc.h" | ||
#include "quantize.h" | ||
#include "thin-image.h" | ||
#include "despeckle.h" | ||
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#include <locale.h> | ||
#include <time.h> | ||
#include <stdlib.h> | ||
#include <string.h> | ||
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#define AT_DEFAULT_DPI 72 | ||
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#define AUTOTRACE_VERSION "willard" | ||
#define AUTOTRACE_WEB "chom" | ||
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at_fitting_opts_type *at_fitting_opts_new(void) | ||
{ | ||
at_fitting_opts_type *opts; | ||
XMALLOC(opts, sizeof(at_fitting_opts_type)); | ||
*opts = new_fitting_opts(); | ||
return opts; | ||
} | ||
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at_fitting_opts_type *at_fitting_opts_copy(at_fitting_opts_type * original) | ||
{ | ||
at_fitting_opts_type *new_opts; | ||
if (original == NULL) | ||
return NULL; | ||
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new_opts = at_fitting_opts_new(); | ||
*new_opts = *original; | ||
if (original->background_color) | ||
new_opts->background_color = at_color_copy(original->background_color); | ||
return new_opts; | ||
} | ||
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void at_fitting_opts_free(at_fitting_opts_type * opts) | ||
{ | ||
free(opts->background_color); | ||
free(opts); | ||
} | ||
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at_input_opts_type *at_input_opts_new(void) | ||
{ | ||
at_input_opts_type *opts; | ||
XMALLOC(opts, sizeof(at_input_opts_type)); | ||
opts->background_color = NULL; | ||
opts->charcode = 0; | ||
return opts; | ||
} | ||
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at_input_opts_type *at_input_opts_copy(at_input_opts_type * original) | ||
{ | ||
at_input_opts_type *opts; | ||
opts = at_input_opts_new(); | ||
*opts = *original; | ||
if (original->background_color) | ||
opts->background_color = at_color_copy(original->background_color); | ||
return opts; | ||
} | ||
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void at_input_opts_free(at_input_opts_type * opts) | ||
{ | ||
free(opts->background_color); | ||
free(opts); | ||
} | ||
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at_output_opts_type *at_output_opts_new(void) | ||
{ | ||
at_output_opts_type *opts; | ||
XMALLOC(opts, sizeof(at_output_opts_type)); | ||
opts->dpi = AT_DEFAULT_DPI; | ||
return opts; | ||
} | ||
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at_output_opts_type *at_output_opts_copy(at_output_opts_type * original) | ||
{ | ||
at_output_opts_type *opts = at_output_opts_new(); | ||
*opts = *original; | ||
return opts; | ||
} | ||
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void at_output_opts_free(at_output_opts_type * opts) | ||
{ | ||
free(opts); | ||
} | ||
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at_bitmap *at_bitmap_read(at_bitmap_reader * reader, gchar * filename, at_input_opts_type * opts, at_msg_func msg_func, gpointer msg_data) | ||
{ | ||
gboolean new_opts = FALSE; | ||
at_bitmap *bitmap; | ||
XMALLOC(bitmap, sizeof(at_bitmap)); | ||
if (opts == NULL) { | ||
opts = at_input_opts_new(); | ||
new_opts = TRUE; | ||
} | ||
*bitmap = (*reader->func) (filename, opts, msg_func, msg_data, reader->data); | ||
if (new_opts) | ||
at_input_opts_free(opts); | ||
return bitmap; | ||
} | ||
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at_bitmap *at_bitmap_new(unsigned short width, unsigned short height, unsigned int planes) | ||
{ | ||
at_bitmap *bitmap; | ||
XMALLOC(bitmap, sizeof(at_bitmap)); | ||
*bitmap = at_bitmap_init(NULL, width, height, planes); | ||
return bitmap; | ||
} | ||
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at_bitmap *at_bitmap_copy(const at_bitmap * src) | ||
{ | ||
at_bitmap *dist; | ||
unsigned short width, height, planes; | ||
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width = at_bitmap_get_width(src); | ||
height = at_bitmap_get_height(src); | ||
planes = at_bitmap_get_planes(src); | ||
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dist = at_bitmap_new(width, height, planes); | ||
memcpy(dist->bitmap, src->bitmap, width * height * planes * sizeof(unsigned char)); | ||
return dist; | ||
} | ||
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at_bitmap at_bitmap_init(unsigned char *area, unsigned short width, unsigned short height, unsigned int planes) | ||
{ | ||
at_bitmap bitmap; | ||
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if (area) | ||
bitmap.bitmap = area; | ||
else { | ||
if (0 == (width * height)) | ||
bitmap.bitmap = NULL; | ||
else | ||
XCALLOC(bitmap.bitmap, width * height * planes * sizeof(unsigned char)); | ||
} | ||
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bitmap.width = width; | ||
bitmap.height = height; | ||
bitmap.np = planes; | ||
return bitmap; | ||
} | ||
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void at_bitmap_free(at_bitmap * bitmap) | ||
{ | ||
free(AT_BITMAP_BITS(bitmap)); | ||
free(bitmap); | ||
} | ||
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unsigned short at_bitmap_get_width(const at_bitmap * bitmap) | ||
{ | ||
return bitmap->width; | ||
} | ||
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unsigned short at_bitmap_get_height(const at_bitmap * bitmap) | ||
{ | ||
return bitmap->height; | ||
} | ||
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unsigned short at_bitmap_get_planes(const at_bitmap * bitmap) | ||
{ | ||
/* Here we use cast rather changing the type definition of | ||
at_bitmap::np to keep binary compatibility. */ | ||
return (unsigned short)bitmap->np; | ||
} | ||
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void at_bitmap_get_color(const at_bitmap * bitmap, unsigned int row, unsigned int col, at_color * color) | ||
{ | ||
unsigned char *p; | ||
g_return_if_fail(color); | ||
g_return_if_fail(bitmap); | ||
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p = AT_BITMAP_PIXEL(bitmap, row, col); | ||
if (at_bitmap_get_planes(bitmap) >= 3) | ||
at_color_set(color, p[0], p[1], p[2]); | ||
else | ||
at_color_set(color, p[0], p[0], p[0]); | ||
} | ||
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gboolean at_bitmap_equal_color(const at_bitmap * bitmap, unsigned int row, unsigned int col, at_color * color) | ||
{ | ||
at_color c; | ||
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g_return_val_if_fail(bitmap, FALSE); | ||
g_return_val_if_fail(color, FALSE); | ||
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at_bitmap_get_color(bitmap, row, col, &c); | ||
return at_color_equal(&c, color); | ||
} | ||
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at_splines_type *at_splines_new(at_bitmap * bitmap, at_fitting_opts_type * opts, at_msg_func msg_func, gpointer msg_data) | ||
{ | ||
return at_splines_new_full(bitmap, opts, msg_func, msg_data, NULL, NULL, NULL, NULL); | ||
} | ||
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/* at_splines_new_full modify its argument: BITMAP | ||
when despeckle, quantize and/or thin_image are invoked. */ | ||
at_splines_type *at_splines_new_full(at_bitmap * bitmap, at_fitting_opts_type * opts, at_msg_func msg_func, gpointer msg_data, at_progress_func notify_progress, gpointer progress_data, at_testcancel_func test_cancel, gpointer testcancel_data) | ||
{ | ||
image_header_type image_header; | ||
at_splines_type *splines = NULL; | ||
pixel_outline_list_type pixels; | ||
QuantizeObj *myQuant = NULL; /* curently not used */ | ||
at_exception_type exp = at_exception_new(msg_func, msg_data); | ||
at_distance_map dist_map, *dist = NULL; | ||
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#define CANCELP (test_cancel && test_cancel(testcancel_data)) | ||
#define FATALP (at_exception_got_fatal(&exp)) | ||
#define FREE_SPLINE() do {if (splines) {at_splines_free(splines); splines = NULL;}} while(0) | ||
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#define CANCEL_THEN_CLEANUP_DIST() if (CANCELP) goto cleanup_dist; | ||
#define CANCEL_THEN_CLEANUP_PIXELS() if (CANCELP) {FREE_SPLINE(); goto cleanup_pixels;} | ||
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#define FATAL_THEN_RETURN() if (FATALP) return splines; | ||
#define FATAL_THEN_CLEANUP_DIST() if (FATALP) goto cleanup_dist; | ||
#define FATAL_THEN_CLEANUP_PIXELS() if (FATALP) {FREE_SPLINE(); goto cleanup_pixels;} | ||
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if (opts->despeckle_level > 0) { | ||
despeckle(bitmap, opts->despeckle_level, opts->despeckle_tightness, opts->noise_removal, &exp); | ||
FATAL_THEN_RETURN(); | ||
} | ||
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image_header.width = at_bitmap_get_width(bitmap); | ||
image_header.height = at_bitmap_get_height(bitmap); | ||
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if (opts->color_count > 0) { | ||
quantize(bitmap, opts->color_count, opts->background_color, &myQuant, &exp); | ||
if (myQuant) | ||
quantize_object_free(myQuant); /* curently not used */ | ||
FATAL_THEN_RETURN(); | ||
} | ||
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if (opts->centerline) { | ||
if (opts->preserve_width) { | ||
/* Preserve line width prior to thinning. */ | ||
dist_map = new_distance_map(bitmap, 255, /*padded= */ TRUE, &exp); | ||
dist = &dist_map; | ||
FATAL_THEN_RETURN(); | ||
} | ||
/* Hereafter, dist is allocated. dist must be freed if | ||
the execution is canceled or exception is raised; | ||
use FATAL_THEN_CLEANUP_DIST. */ | ||
thin_image(bitmap, opts->background_color, &exp); | ||
FATAL_THEN_CLEANUP_DIST() | ||
} | ||
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/* Hereafter, pixels is allocated. pixels must be freed if | ||
the execution is canceled; use CANCEL_THEN_CLEANUP_PIXELS. */ | ||
if (opts->centerline) { | ||
at_color background_color = { 0xff, 0xff, 0xff }; | ||
if (opts->background_color) | ||
background_color = *opts->background_color; | ||
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pixels = find_centerline_pixels(bitmap, background_color, notify_progress, progress_data, test_cancel, testcancel_data, &exp); | ||
} else | ||
pixels = find_outline_pixels(bitmap, opts->background_color, notify_progress, progress_data, test_cancel, testcancel_data, &exp); | ||
FATAL_THEN_CLEANUP_DIST(); | ||
CANCEL_THEN_CLEANUP_DIST(); | ||
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XMALLOC(splines, sizeof(at_splines_type)); | ||
*splines = fitted_splines(pixels, opts, dist, image_header.width, image_header.height, &exp, notify_progress, progress_data, test_cancel, testcancel_data); | ||
FATAL_THEN_CLEANUP_PIXELS(); | ||
CANCEL_THEN_CLEANUP_PIXELS(); | ||
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if (notify_progress) | ||
notify_progress(1.0, progress_data); | ||
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cleanup_pixels: | ||
free_pixel_outline_list(&pixels); | ||
cleanup_dist: | ||
if (dist) | ||
free_distance_map(dist); | ||
return splines; | ||
#undef CANCELP | ||
#undef FATALP | ||
#undef FREE_SPLINE | ||
#undef CANCEL_THEN_CLEANUP_DIST | ||
#undef CANCEL_THEN_CLEANUP_PIXELS | ||
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#undef FATAL_THEN_RETURN | ||
#undef FATAL_THEN_CLEANUP_DIST | ||
#undef FATAL_THEN_CLEANUP_PIXELS | ||
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} | ||
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void at_splines_write(at_spline_writer * writer, FILE * writeto, gchar * file_name, at_output_opts_type * opts, at_splines_type * splines, at_msg_func msg_func, gpointer msg_data) | ||
{ | ||
gboolean new_opts = FALSE; | ||
int llx, lly, urx, ury; | ||
llx = 0; | ||
lly = 0; | ||
urx = splines->width; | ||
ury = splines->height; | ||
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if (!file_name) | ||
file_name = ""; | ||
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if (opts == NULL) { | ||
new_opts = TRUE; | ||
opts = at_output_opts_new(); | ||
} | ||
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setlocale(LC_NUMERIC, "C"); | ||
(*writer->func) (writeto, file_name, llx, lly, urx, ury, opts, *splines, msg_func, msg_data, writer->data); | ||
if (new_opts) | ||
at_output_opts_free(opts); | ||
} | ||
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void at_splines_free(at_splines_type * splines) | ||
{ | ||
free_spline_list_array(splines); | ||
if (splines->background_color) | ||
at_color_free(splines->background_color); | ||
free(splines); | ||
} | ||
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const char *at_version(gboolean long_format) | ||
{ | ||
if (long_format) | ||
return "AutoTrace version " AUTOTRACE_VERSION; | ||
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return AUTOTRACE_VERSION; | ||
} | ||
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const char *at_home_site(void) | ||
{ | ||
return AUTOTRACE_WEB; | ||
} | ||
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void autotrace_init(void) | ||
{ | ||
static int initialized = 0; | ||
if (!initialized) { | ||
#ifdef ENABLE_NLS | ||
setlocale(LC_ALL, ""); | ||
bindtextdomain(PACKAGE, LOCALEDIR); | ||
#endif /* Def: ENABLE_NLS */ | ||
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/* Initialize subsystems */ | ||
at_input_init(); | ||
at_output_init(); | ||
at_module_init(); | ||
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initialized = 1; | ||
} | ||
} | ||
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const char *at_fitting_opts_doc_func(char *string) | ||
{ | ||
return _(string); | ||
} |
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