Mercurial > hgrepos > Python2 > PyMuPDF
annotate mupdf-source/thirdparty/libjpeg/jcapimin.c @ 46:7ee69f120f19 default tip
>>>>> tag v1.26.5+1 for changeset b74429b0f5c4
| author | Franz Glasner <fzglas.hg@dom66.de> |
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| date | Sat, 11 Oct 2025 17:17:30 +0200 |
| parents | b50eed0cc0ef |
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1 /* |
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2 * jcapimin.c |
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3 * |
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4 * Copyright (C) 1994-1998, Thomas G. Lane. |
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5 * Modified 2003-2010 by Guido Vollbeding. |
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6 * This file is part of the Independent JPEG Group's software. |
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7 * For conditions of distribution and use, see the accompanying README file. |
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8 * |
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9 * This file contains application interface code for the compression half |
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10 * of the JPEG library. These are the "minimum" API routines that may be |
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11 * needed in either the normal full-compression case or the transcoding-only |
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12 * case. |
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13 * |
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14 * Most of the routines intended to be called directly by an application |
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15 * are in this file or in jcapistd.c. But also see jcparam.c for |
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16 * parameter-setup helper routines, jcomapi.c for routines shared by |
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17 * compression and decompression, and jctrans.c for the transcoding case. |
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18 */ |
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19 |
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20 #define JPEG_INTERNALS |
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21 #include "jinclude.h" |
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22 #include "jpeglib.h" |
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23 |
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24 |
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25 /* |
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26 * Initialization of a JPEG compression object. |
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27 * The error manager must already be set up (in case memory manager fails). |
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28 */ |
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29 |
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30 GLOBAL(void) |
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31 jpeg_CreateCompress (j_compress_ptr cinfo, int version, size_t structsize) |
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32 { |
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33 int i; |
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34 |
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35 /* Guard against version mismatches between library and caller. */ |
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36 cinfo->mem = NULL; /* so jpeg_destroy knows mem mgr not called */ |
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37 if (version != JPEG_LIB_VERSION) |
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38 ERREXIT2(cinfo, JERR_BAD_LIB_VERSION, JPEG_LIB_VERSION, version); |
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39 if (structsize != SIZEOF(struct jpeg_compress_struct)) |
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40 ERREXIT2(cinfo, JERR_BAD_STRUCT_SIZE, |
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41 (int) SIZEOF(struct jpeg_compress_struct), (int) structsize); |
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42 |
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43 /* For debugging purposes, we zero the whole master structure. |
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44 * But the application has already set the err pointer, and may have set |
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45 * client_data, so we have to save and restore those fields. |
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46 * Note: if application hasn't set client_data, tools like Purify may |
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47 * complain here. |
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48 */ |
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49 { |
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50 struct jpeg_error_mgr * err = cinfo->err; |
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51 void * client_data = cinfo->client_data; /* ignore Purify complaint here */ |
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52 MEMZERO(cinfo, SIZEOF(struct jpeg_compress_struct)); |
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53 cinfo->err = err; |
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54 cinfo->client_data = client_data; |
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55 } |
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56 cinfo->is_decompressor = FALSE; |
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57 |
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58 /* Initialize a memory manager instance for this object */ |
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59 jinit_memory_mgr((j_common_ptr) cinfo); |
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60 |
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61 /* Zero out pointers to permanent structures. */ |
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62 cinfo->progress = NULL; |
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63 cinfo->dest = NULL; |
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64 |
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65 cinfo->comp_info = NULL; |
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66 |
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67 for (i = 0; i < NUM_QUANT_TBLS; i++) { |
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68 cinfo->quant_tbl_ptrs[i] = NULL; |
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69 cinfo->q_scale_factor[i] = 100; |
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70 } |
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71 |
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72 for (i = 0; i < NUM_HUFF_TBLS; i++) { |
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73 cinfo->dc_huff_tbl_ptrs[i] = NULL; |
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74 cinfo->ac_huff_tbl_ptrs[i] = NULL; |
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75 } |
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76 |
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77 /* Must do it here for emit_dqt in case jpeg_write_tables is used */ |
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78 cinfo->block_size = DCTSIZE; |
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79 cinfo->natural_order = jpeg_natural_order; |
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80 cinfo->lim_Se = DCTSIZE2-1; |
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81 |
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82 cinfo->script_space = NULL; |
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83 |
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84 cinfo->input_gamma = 1.0; /* in case application forgets */ |
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85 |
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86 /* OK, I'm ready */ |
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87 cinfo->global_state = CSTATE_START; |
|
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ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff
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|
88 } |
|
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ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff
changeset
|
89 |
|
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ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff
changeset
|
90 |
|
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ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff
changeset
|
91 /* |
|
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ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
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parents:
diff
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|
92 * Destruction of a JPEG compression object |
|
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ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff
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|
93 */ |
|
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ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff
changeset
|
94 |
|
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ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff
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|
95 GLOBAL(void) |
|
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ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
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parents:
diff
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|
96 jpeg_destroy_compress (j_compress_ptr cinfo) |
|
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ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff
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|
97 { |
|
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ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff
changeset
|
98 jpeg_destroy((j_common_ptr) cinfo); /* use common routine */ |
|
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ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff
changeset
|
99 } |
|
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ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff
changeset
|
100 |
|
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ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff
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|
101 |
|
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ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff
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|
102 /* |
|
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ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
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parents:
diff
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|
103 * Abort processing of a JPEG compression operation, |
|
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ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
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|
104 * but don't destroy the object itself. |
|
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ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff
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|
105 */ |
|
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ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
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parents:
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|
106 |
|
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ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff
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|
107 GLOBAL(void) |
|
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ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
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parents:
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|
108 jpeg_abort_compress (j_compress_ptr cinfo) |
|
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ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff
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|
109 { |
|
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ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff
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|
110 jpeg_abort((j_common_ptr) cinfo); /* use common routine */ |
|
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ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff
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|
111 } |
|
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ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
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|
112 |
|
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ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
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parents:
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|
113 |
|
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff
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|
114 /* |
|
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ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
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parents:
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|
115 * Forcibly suppress or un-suppress all quantization and Huffman tables. |
|
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ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
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|
116 * Marks all currently defined tables as already written (if suppress) |
|
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ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
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|
117 * or not written (if !suppress). This will control whether they get emitted |
|
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ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
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|
118 * by a subsequent jpeg_start_compress call. |
|
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ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
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|
119 * |
|
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ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
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|
120 * This routine is exported for use by applications that want to produce |
|
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ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff
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|
121 * abbreviated JPEG datastreams. It logically belongs in jcparam.c, but |
|
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ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
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|
122 * since it is called by jpeg_start_compress, we put it here --- otherwise |
|
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ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff
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|
123 * jcparam.o would be linked whether the application used it or not. |
|
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ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff
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|
124 */ |
|
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ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
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|
125 |
|
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ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff
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|
126 GLOBAL(void) |
|
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ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff
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|
127 jpeg_suppress_tables (j_compress_ptr cinfo, boolean suppress) |
|
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ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff
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|
128 { |
|
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ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
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|
129 int i; |
|
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ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
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|
130 JQUANT_TBL * qtbl; |
|
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ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff
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|
131 JHUFF_TBL * htbl; |
|
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ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
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|
132 |
|
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ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff
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|
133 for (i = 0; i < NUM_QUANT_TBLS; i++) { |
|
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ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
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|
134 if ((qtbl = cinfo->quant_tbl_ptrs[i]) != NULL) |
|
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Franz Glasner <fzglas.hg@dom66.de>
parents:
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|
135 qtbl->sent_table = suppress; |
|
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ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff
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|
136 } |
|
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ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff
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|
137 |
|
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ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff
changeset
|
138 for (i = 0; i < NUM_HUFF_TBLS; i++) { |
|
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ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
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|
139 if ((htbl = cinfo->dc_huff_tbl_ptrs[i]) != NULL) |
|
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ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff
changeset
|
140 htbl->sent_table = suppress; |
|
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ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff
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|
141 if ((htbl = cinfo->ac_huff_tbl_ptrs[i]) != NULL) |
|
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ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff
changeset
|
142 htbl->sent_table = suppress; |
|
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ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff
changeset
|
143 } |
|
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ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff
changeset
|
144 } |
|
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ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff
changeset
|
145 |
|
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ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff
changeset
|
146 |
|
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ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff
changeset
|
147 /* |
|
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ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff
changeset
|
148 * Finish JPEG compression. |
|
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ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff
changeset
|
149 * |
|
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ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff
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|
150 * If a multipass operating mode was selected, this may do a great deal of |
|
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ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff
changeset
|
151 * work including most of the actual output. |
|
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ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff
changeset
|
152 */ |
|
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ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff
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|
153 |
|
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ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff
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|
154 GLOBAL(void) |
|
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ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff
changeset
|
155 jpeg_finish_compress (j_compress_ptr cinfo) |
|
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ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff
changeset
|
156 { |
|
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ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff
changeset
|
157 JDIMENSION iMCU_row; |
|
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ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff
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|
158 |
|
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ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff
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|
159 if (cinfo->global_state == CSTATE_SCANNING || |
|
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ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff
changeset
|
160 cinfo->global_state == CSTATE_RAW_OK) { |
|
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ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff
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|
161 /* Terminate first pass */ |
|
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ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff
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|
162 if (cinfo->next_scanline < cinfo->image_height) |
|
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ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff
changeset
|
163 ERREXIT(cinfo, JERR_TOO_LITTLE_DATA); |
|
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ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff
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|
164 (*cinfo->master->finish_pass) (cinfo); |
|
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ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff
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|
165 } else if (cinfo->global_state != CSTATE_WRCOEFS) |
|
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ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff
changeset
|
166 ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state); |
|
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ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff
changeset
|
167 /* Perform any remaining passes */ |
|
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ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff
changeset
|
168 while (! cinfo->master->is_last_pass) { |
|
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ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff
changeset
|
169 (*cinfo->master->prepare_for_pass) (cinfo); |
|
b50eed0cc0ef
ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff
changeset
|
170 for (iMCU_row = 0; iMCU_row < cinfo->total_iMCU_rows; iMCU_row++) { |
|
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ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff
changeset
|
171 if (cinfo->progress != NULL) { |
|
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ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff
changeset
|
172 cinfo->progress->pass_counter = (long) iMCU_row; |
|
b50eed0cc0ef
ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff
changeset
|
173 cinfo->progress->pass_limit = (long) cinfo->total_iMCU_rows; |
|
b50eed0cc0ef
ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff
changeset
|
174 (*cinfo->progress->progress_monitor) ((j_common_ptr) cinfo); |
|
b50eed0cc0ef
ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff
changeset
|
175 } |
|
b50eed0cc0ef
ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff
changeset
|
176 /* We bypass the main controller and invoke coef controller directly; |
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177 * all work is being done from the coefficient buffer. |
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178 */ |
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179 if (! (*cinfo->coef->compress_data) (cinfo, (JSAMPIMAGE) NULL)) |
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180 ERREXIT(cinfo, JERR_CANT_SUSPEND); |
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181 } |
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182 (*cinfo->master->finish_pass) (cinfo); |
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183 } |
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184 /* Write EOI, do final cleanup */ |
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185 (*cinfo->marker->write_file_trailer) (cinfo); |
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186 (*cinfo->dest->term_destination) (cinfo); |
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187 /* We can use jpeg_abort to release memory and reset global_state */ |
|
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188 jpeg_abort((j_common_ptr) cinfo); |
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189 } |
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190 |
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191 |
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192 /* |
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193 * Write a special marker. |
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194 * This is only recommended for writing COM or APPn markers. |
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195 * Must be called after jpeg_start_compress() and before |
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196 * first call to jpeg_write_scanlines() or jpeg_write_raw_data(). |
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197 */ |
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198 |
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199 GLOBAL(void) |
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200 jpeg_write_marker (j_compress_ptr cinfo, int marker, |
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201 const JOCTET *dataptr, unsigned int datalen) |
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202 { |
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203 JMETHOD(void, write_marker_byte, (j_compress_ptr info, int val)); |
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204 |
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205 if (cinfo->next_scanline != 0 || |
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206 (cinfo->global_state != CSTATE_SCANNING && |
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|
207 cinfo->global_state != CSTATE_RAW_OK && |
|
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208 cinfo->global_state != CSTATE_WRCOEFS)) |
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209 ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state); |
|
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210 |
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211 (*cinfo->marker->write_marker_header) (cinfo, marker, datalen); |
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212 write_marker_byte = cinfo->marker->write_marker_byte; /* copy for speed */ |
|
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213 while (datalen--) { |
|
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214 (*write_marker_byte) (cinfo, *dataptr); |
|
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|
215 dataptr++; |
|
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216 } |
|
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217 } |
|
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218 |
|
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219 /* Same, but piecemeal. */ |
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220 |
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221 GLOBAL(void) |
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|
222 jpeg_write_m_header (j_compress_ptr cinfo, int marker, unsigned int datalen) |
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223 { |
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224 if (cinfo->next_scanline != 0 || |
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225 (cinfo->global_state != CSTATE_SCANNING && |
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226 cinfo->global_state != CSTATE_RAW_OK && |
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227 cinfo->global_state != CSTATE_WRCOEFS)) |
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|
228 ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state); |
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229 |
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|
230 (*cinfo->marker->write_marker_header) (cinfo, marker, datalen); |
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ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
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231 } |
|
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232 |
|
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|
233 GLOBAL(void) |
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|
234 jpeg_write_m_byte (j_compress_ptr cinfo, int val) |
|
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|
235 { |
|
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|
236 (*cinfo->marker->write_marker_byte) (cinfo, val); |
|
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237 } |
|
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238 |
|
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|
239 |
|
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240 /* |
|
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|
241 * Alternate compression function: just write an abbreviated table file. |
|
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|
242 * Before calling this, all parameters and a data destination must be set up. |
|
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|
243 * |
|
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244 * To produce a pair of files containing abbreviated tables and abbreviated |
|
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|
245 * image data, one would proceed as follows: |
|
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246 * |
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247 * initialize JPEG object |
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248 * set JPEG parameters |
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249 * set destination to table file |
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|
250 * jpeg_write_tables(cinfo); |
|
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parents:
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251 * set destination to image file |
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|
252 * jpeg_start_compress(cinfo, FALSE); |
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253 * write data... |
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|
254 * jpeg_finish_compress(cinfo); |
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255 * |
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parents:
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|
256 * jpeg_write_tables has the side effect of marking all tables written |
|
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ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
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parents:
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|
257 * (same as jpeg_suppress_tables(..., TRUE)). Thus a subsequent start_compress |
|
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258 * will not re-emit the tables unless it is passed write_all_tables=TRUE. |
|
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|
259 */ |
|
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260 |
|
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|
261 GLOBAL(void) |
|
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|
262 jpeg_write_tables (j_compress_ptr cinfo) |
|
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ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
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parents:
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|
263 { |
|
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parents:
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|
264 if (cinfo->global_state != CSTATE_START) |
|
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265 ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state); |
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266 |
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267 /* (Re)initialize error mgr and destination modules */ |
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268 (*cinfo->err->reset_error_mgr) ((j_common_ptr) cinfo); |
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269 (*cinfo->dest->init_destination) (cinfo); |
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270 /* Initialize the marker writer ... bit of a crock to do it here. */ |
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271 jinit_marker_writer(cinfo); |
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272 /* Write them tables! */ |
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273 (*cinfo->marker->write_tables_only) (cinfo); |
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274 /* And clean up. */ |
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275 (*cinfo->dest->term_destination) (cinfo); |
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276 /* |
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277 * In library releases up through v6a, we called jpeg_abort() here to free |
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278 * any working memory allocated by the destination manager and marker |
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279 * writer. Some applications had a problem with that: they allocated space |
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280 * of their own from the library memory manager, and didn't want it to go |
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281 * away during write_tables. So now we do nothing. This will cause a |
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282 * memory leak if an app calls write_tables repeatedly without doing a full |
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283 * compression cycle or otherwise resetting the JPEG object. However, that |
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284 * seems less bad than unexpectedly freeing memory in the normal case. |
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285 * An app that prefers the old behavior can call jpeg_abort for itself after |
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286 * each call to jpeg_write_tables(). |
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287 */ |
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288 } |
