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comparison mupdf-source/thirdparty/leptonica/src/watershed.h @ 2:b50eed0cc0ef upstream

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ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4. The directory name has changed: no version number in the expanded directory now.
author Franz Glasner <fzglas.hg@dom66.de>
date Mon, 15 Sep 2025 11:43:07 +0200
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1:1d09e1dec1d9 2:b50eed0cc0ef
1 /*====================================================================*
2 - Copyright (C) 2001 Leptonica. All rights reserved.
3 -
4 - Redistribution and use in source and binary forms, with or without
5 - modification, are permitted provided that the following conditions
6 - are met:
7 - 1. Redistributions of source code must retain the above copyright
8 - notice, this list of conditions and the following disclaimer.
9 - 2. Redistributions in binary form must reproduce the above
10 - copyright notice, this list of conditions and the following
11 - disclaimer in the documentation and/or other materials
12 - provided with the distribution.
13 -
14 - THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
15 - ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
16 - LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
17 - A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL ANY
18 - CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
19 - EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
20 - PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
21 - PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
22 - OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
23 - NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
24 - SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 *====================================================================*/
26
27 #ifndef LEPTONICA_WATERSHED_H
28 #define LEPTONICA_WATERSHED_H
29
30 /*!
31 * \file watershed.h
32 *
33 * Simple data structure to hold watershed data.
34 * All data here is owned by the L_WShed and must be freed.
35 */
36
37 /*! Simple data structure to hold watershed data. */
38 struct L_WShed
39 {
40 struct Pix *pixs; /*!< clone of input 8 bpp pixs */
41 struct Pix *pixm; /*!< clone of input 1 bpp seed (marker) pixm */
42 l_int32 mindepth; /*!< minimum depth allowed for a watershed */
43 struct Pix *pixlab; /*!< 16 bpp label pix */
44 struct Pix *pixt; /*!< scratch pix for computing wshed regions */
45 void **lines8; /*!< line ptrs for pixs */
46 void **linem1; /*!< line ptrs for pixm */
47 void **linelab32; /*!< line ptrs for pixlab */
48 void **linet1; /*!< line ptrs for pixt */
49 struct Pixa *pixad; /*!< result: 1 bpp pixa of watersheds */
50 struct Pta *ptas; /*!< pta of initial seed pixels */
51 struct Numa *nasi; /*!< numa of seed indicators; 0 if completed */
52 struct Numa *nash; /*!< numa of initial seed heights */
53 struct Numa *namh; /*!< numa of initial minima heights */
54 struct Numa *nalevels; /*!< result: numa of watershed levels */
55 l_int32 nseeds; /*!< number of seeds (markers) */
56 l_int32 nother; /*!< number of minima different from seeds */
57 l_int32 *lut; /*!< lut for pixel indices */
58 struct Numa **links; /*!< back-links into lut, for updates */
59 l_int32 arraysize; /*!< size of links array */
60 l_int32 debug; /*!< set to 1 for debug output */
61 };
62 typedef struct L_WShed L_WSHED;
63
64 #endif /* LEPTONICA_WATERSHED_H */