Mercurial > hgrepos > Python2 > PyMuPDF

annotate mupdf-source/docs/reference/c/fitz/context.md @ 38:8934ac156ef5

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Allow to build with the PyPI package "clang" instead of "libclang". 1. It seems to be maintained. 2. In the FreeBSD base system there is no pre-built libclang.so. If you need this library you have to install llvm from ports additionally. 2. On FreeBSD there is no pre-built wheel "libclang" with a packaged libclang.so.
author Franz Glasner <fzglas.hg@dom66.de>
date Tue, 23 Sep 2025 10:27:15 +0200
parents b50eed0cc0ef
children
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1 # Context
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3 Almost all functions in the MuPDF library take a `fz_context` structure as
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4 their first argument. The context is used for many things; primarily it holds
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5 the exception stack for our `setjmp` based exception handling. It also holds
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
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6 various caches and auxiliary contexts for font rendering and color management.
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8 Here is the code to create a Fitz context. The first two arguments are used if
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9 you need to use a custom memory allocator, and the third argument is a hint to
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10 much memory the various caches should be allowed to grow. The limit is only a
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
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11 soft limit. We may exceed it, but will start clearing out stale data to try to
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
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12 stay below the limit when possible. Setting it to a lower value will prevent
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13 the caches from growing out of hand if you are tight on memory.
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15 #include <mupdf/fitz.h>
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17 #include <stdio.h>
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18 #include <stdlib.h>
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20 main()
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21 {
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22 fz_context *ctx = fz_new_context(NULL, NULL, FZ_STORE_UNLIMITED);
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23 if (!ctx) {
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24 fprintf(stderr, "Failed to create a new Fitz context!\n");
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25 return EXIT_FAILURE;
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26 }
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28 ... do stuff ...
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30 fz_drop_context(ctx);
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31 return EXIT_SUCCESS;
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32 }