1 files changed, 95 insertions, 0 deletions
diff --git a/src/3rdparty/autotrace/input.h b/src/3rdparty/autotrace/input.h
new file mode 100644
index 0000000..b4a7d9b
--- /dev/null
+++ b/src/3rdparty/autotrace/input.h
@@ -0,0 +1,95 @@
+/* input.h: interface for input handlers
+
+   Copyright (C) 1999, 2000, 2001 Bernhard Herzog.
+
+   This library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public License
+   as published by the Free Software Foundation; either version 2.1 of
+   the License, or (at your option) any later version.
+
+   This library 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
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with this library; if not, write to the Free Software
+   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
+   USA. */
+
+#ifndef INPUT_H
+#define INPUT_H
+#include "types.h"
+#include "autotrace.h"
+#include "exception.h"
+
+#include <glib.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif                          /* __cplusplus */
+
+/* Input handler should be implemented with using
+   following functions and macros. */
+
+  typedef
+   at_bitmap(*at_input_func) (gchar * name, at_input_opts_type * opts, at_msg_func msg_func, gpointer msg_data, gpointer user_data);
+
+/* at_input_add_handler
+   Register an input handler to autotrace.
+   If a handler for the suffix is already existed, do nothing. */
+  extern int at_input_add_handler(const gchar * suffix, const gchar * description, at_input_func reader);
+/* at_input_add_handler_full
+   If OVERRIDE is TRUE and if the old handler for suffix is existed,
+   remove the old handler first then add new handler.
+   If OVERRIDE is false, do nothing. */
+  extern int at_input_add_handler_full(const gchar * suffix, const gchar * description, at_input_func reader, gboolean override, gpointer user_data, GDestroyNotify user_data_destroy_func);
+
+/* at_bitmap_init
+   Return initialized at_bitmap value.
+
+   args:
+   AREA is used as a storage of returned value.
+   If AREA is NULL, the storage is newly allocated
+   by at_bitmap_init. In such case the size of storage
+   is automatically calculated by WIDTH, HEIGHT and PLANES.
+
+   PLANES must be 1(gray scale) or 3(RGB color).
+
+   return value:
+   The return value is not newly allocated.
+   Only the storage is allocated if AREA is NULL.
+   On the other hand, at_bitmap_new allocates
+   mem for at_bitmap; and returns a pointer
+   for the mem.
+   at_bitmap_new is for autotrace library user.
+   at_bitmap_init is for input-handler developer.
+   Don't use at_bitmap_new in your input-handler. */
+  extern at_bitmap at_bitmap_init(unsigned char *area, unsigned short width, unsigned short height, unsigned int planes);
+
+/* TODO: free storage */
+
+/* The number of color planes of each pixel */
+#define AT_BITMAP_PLANES(b)  ((b)->np)
+
+/* The pixels, represented as an array of bytes (in contiguous storage).
+   Each pixel is represented by np bytes.  */
+#define AT_BITMAP_BITS(b)  ((b)->bitmap)
+
+/* These are convenient abbreviations for geting inside the members.  */
+#define AT_BITMAP_WIDTH(b)  ((b)->width)
+#define AT_BITMAP_HEIGHT(b)  ((b)->height)
+
+/* This is the pixel at [ROW,COL].  */
+#define AT_BITMAP_PIXEL(b, row, col)					\
+  ((AT_BITMAP_BITS (b) + (row) * AT_BITMAP_PLANES (b) * AT_BITMAP_WIDTH (b)	\
+        + (col) * AT_BITMAP_PLANES(b)))
+
+/* at_ prefix removed version */
+#define AT_BITMAP_VALID_PIXEL(b, row, col)					\
+  ((row) < AT_BITMAP_HEIGHT (b) && (col) < AT_BITMAP_WIDTH (b))
+
+#ifdef __cplusplus
+}
+#endif                          /* __cplusplus */
+#endif                          /* Not def: INPUT_H */