Mercurial > hgrepos > Python2 > PyMuPDF

annotate mupdf-source/source/fitz/leptonica-wrap.c @ 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 // Copyright (C) 2020-2023 Artifex Software, Inc.
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2 //
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3 // This file is part of MuPDF.
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4 //
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5 // MuPDF is free software: you can redistribute it and/or modify it under the
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6 // terms of the GNU Affero General Public License as published by the Free
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7 // Software Foundation, either version 3 of the License, or (at your option)
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8 // any later version.
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9 //
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10 // MuPDF is distributed in the hope that it will be useful, but WITHOUT ANY
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11 // WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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12 // FOR A PARTICULAR PURPOSE. See the GNU Affero General Public License for more
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13 // details.
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14 //
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15 // You should have received a copy of the GNU Affero General Public License
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16 // along with MuPDF. If not, see <https://www.gnu.org/licenses/agpl-3.0.en.html>
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17 //
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18 // Alternative licensing terms are available from the licensor.
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19 // For commercial licensing, see <https://www.artifex.com/> or contact
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20 // Artifex Software, Inc., 39 Mesa Street, Suite 108A, San Francisco,
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21 // CA 94129, USA, for further information.
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22
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23 #include "leptonica-wrap.h"
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24
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25 #ifdef HAVE_LEPTONICA
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27 #include "allheaders.h"
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28
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29 /* When we build with our own leptonica, we want to intercept malloc/free etc.
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30 * Unfortunately we have to use a nasty global here. */
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31 static fz_context *leptonica_mem = NULL;
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32
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33 void *leptonica_malloc(size_t size)
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34 {
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35 void *ret = Memento_label(fz_malloc_no_throw(leptonica_mem, size), "leptonica_malloc");
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36 #ifdef DEBUG_ALLOCS
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37 printf("%d LEPTONICA_MALLOC(%p) %d -> %p\n", event++, leptonica_mem, (int)size, ret);
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38 fflush(stdout);
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39 #endif
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40 return ret;
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41 }
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42
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43 void leptonica_free(void *ptr)
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44 {
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45 #ifdef DEBUG_ALLOCS
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46 printf("%d LEPTONICA_FREE(%p) %p\n", event++, leptonica_mem, ptr);
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47 fflush(stdout);
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48 #endif
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49 fz_free(leptonica_mem, ptr);
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50 }
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51
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52 void *leptonica_calloc(size_t numelm, size_t elemsize)
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53 {
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54 void *ret = leptonica_malloc(numelm * elemsize);
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55
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56 if (ret)
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57 memset(ret, 0, numelm * elemsize);
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58 #ifdef DEBUG_ALLOCS
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59 printf("%d LEPTONICA_CALLOC %d,%d -> %p\n", event++, (int)numelm, (int)elemsize, ret);
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60 fflush(stdout);
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61 #endif
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62 return ret;
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63 }
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64
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65 /* Not currently actually used */
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66 void *leptonica_realloc(void *ptr, size_t blocksize)
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67 {
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68 void *ret = fz_realloc_no_throw(leptonica_mem, ptr, blocksize);
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69
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70 #ifdef DEBUG_ALLOCS
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71 printf("%d LEPTONICA_REALLOC %p,%d -> %p\n", event++, ptr, (int)blocksize, ret);
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72 fflush(stdout);
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73 #endif
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74 return ret;
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75 }
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76
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77 void
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78 fz_set_leptonica_mem(fz_context *ctx)
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79 {
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80 int die = 0;
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81
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82 fz_lock(ctx, FZ_LOCK_ALLOC);
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83 die = (leptonica_mem != NULL);
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84 if (!die)
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85 leptonica_mem = ctx;
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86 fz_unlock(ctx, FZ_LOCK_ALLOC);
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87 if (die)
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88 fz_throw(ctx, FZ_ERROR_ARGUMENT, "Attempt to use Leptonica from 2 threads at once!");
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89 setPixMemoryManager(leptonica_malloc, leptonica_free);
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90 }
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91
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92 void
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93 fz_clear_leptonica_mem(fz_context *ctx)
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94 {
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95 int die = 0;
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96
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97 fz_lock(ctx, FZ_LOCK_ALLOC);
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98 die = (leptonica_mem == NULL);
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99 if (!die)
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Franz Glasner <fzglas.hg@dom66.de>
parents:
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100 leptonica_mem = NULL;
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Franz Glasner <fzglas.hg@dom66.de>
parents:
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101 fz_unlock(ctx, FZ_LOCK_ALLOC);
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parents:
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102 if (die)
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parents:
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103 fz_throw(ctx, FZ_ERROR_ARGUMENT, "Attempt to use Leptonica from 2 threads at once!");
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Franz Glasner <fzglas.hg@dom66.de>
parents:
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104 setPixMemoryManager(malloc, free);
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Franz Glasner <fzglas.hg@dom66.de>
parents:
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105 }
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parents:
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106
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parents:
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107 #endif /* HAVE_LEPTONICA */