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Diffstat (limited to '')
-rw-r--r-- | libraries/irrlicht-1.8/source/Irrlicht/jpeglib/jcomapi.c | 106 |
1 files changed, 106 insertions, 0 deletions
diff --git a/libraries/irrlicht-1.8/source/Irrlicht/jpeglib/jcomapi.c b/libraries/irrlicht-1.8/source/Irrlicht/jpeglib/jcomapi.c new file mode 100644 index 0000000..1b1a340 --- /dev/null +++ b/libraries/irrlicht-1.8/source/Irrlicht/jpeglib/jcomapi.c | |||
@@ -0,0 +1,106 @@ | |||
1 | /* | ||
2 | * jcomapi.c | ||
3 | * | ||
4 | * Copyright (C) 1994-1997, Thomas G. Lane. | ||
5 | * This file is part of the Independent JPEG Group's software. | ||
6 | * For conditions of distribution and use, see the accompanying README file. | ||
7 | * | ||
8 | * This file contains application interface routines that are used for both | ||
9 | * compression and decompression. | ||
10 | */ | ||
11 | |||
12 | #define JPEG_INTERNALS | ||
13 | #include "jinclude.h" | ||
14 | #include "jpeglib.h" | ||
15 | |||
16 | |||
17 | /* | ||
18 | * Abort processing of a JPEG compression or decompression operation, | ||
19 | * but don't destroy the object itself. | ||
20 | * | ||
21 | * For this, we merely clean up all the nonpermanent memory pools. | ||
22 | * Note that temp files (virtual arrays) are not allowed to belong to | ||
23 | * the permanent pool, so we will be able to close all temp files here. | ||
24 | * Closing a data source or destination, if necessary, is the application's | ||
25 | * responsibility. | ||
26 | */ | ||
27 | |||
28 | GLOBAL(void) | ||
29 | jpeg_abort (j_common_ptr cinfo) | ||
30 | { | ||
31 | int pool; | ||
32 | |||
33 | /* Do nothing if called on a not-initialized or destroyed JPEG object. */ | ||
34 | if (cinfo->mem == NULL) | ||
35 | return; | ||
36 | |||
37 | /* Releasing pools in reverse order might help avoid fragmentation | ||
38 | * with some (brain-damaged) malloc libraries. | ||
39 | */ | ||
40 | for (pool = JPOOL_NUMPOOLS-1; pool > JPOOL_PERMANENT; pool--) { | ||
41 | (*cinfo->mem->free_pool) (cinfo, pool); | ||
42 | } | ||
43 | |||
44 | /* Reset overall state for possible reuse of object */ | ||
45 | if (cinfo->is_decompressor) { | ||
46 | cinfo->global_state = DSTATE_START; | ||
47 | /* Try to keep application from accessing now-deleted marker list. | ||
48 | * A bit kludgy to do it here, but this is the most central place. | ||
49 | */ | ||
50 | ((j_decompress_ptr) cinfo)->marker_list = NULL; | ||
51 | } else { | ||
52 | cinfo->global_state = CSTATE_START; | ||
53 | } | ||
54 | } | ||
55 | |||
56 | |||
57 | /* | ||
58 | * Destruction of a JPEG object. | ||
59 | * | ||
60 | * Everything gets deallocated except the master jpeg_compress_struct itself | ||
61 | * and the error manager struct. Both of these are supplied by the application | ||
62 | * and must be freed, if necessary, by the application. (Often they are on | ||
63 | * the stack and so don't need to be freed anyway.) | ||
64 | * Closing a data source or destination, if necessary, is the application's | ||
65 | * responsibility. | ||
66 | */ | ||
67 | |||
68 | GLOBAL(void) | ||
69 | jpeg_destroy (j_common_ptr cinfo) | ||
70 | { | ||
71 | /* We need only tell the memory manager to release everything. */ | ||
72 | /* NB: mem pointer is NULL if memory mgr failed to initialize. */ | ||
73 | if (cinfo->mem != NULL) | ||
74 | (*cinfo->mem->self_destruct) (cinfo); | ||
75 | cinfo->mem = NULL; /* be safe if jpeg_destroy is called twice */ | ||
76 | cinfo->global_state = 0; /* mark it destroyed */ | ||
77 | } | ||
78 | |||
79 | |||
80 | /* | ||
81 | * Convenience routines for allocating quantization and Huffman tables. | ||
82 | * (Would jutils.c be a more reasonable place to put these?) | ||
83 | */ | ||
84 | |||
85 | GLOBAL(JQUANT_TBL *) | ||
86 | jpeg_alloc_quant_table (j_common_ptr cinfo) | ||
87 | { | ||
88 | JQUANT_TBL *tbl; | ||
89 | |||
90 | tbl = (JQUANT_TBL *) | ||
91 | (*cinfo->mem->alloc_small) (cinfo, JPOOL_PERMANENT, SIZEOF(JQUANT_TBL)); | ||
92 | tbl->sent_table = FALSE; /* make sure this is false in any new table */ | ||
93 | return tbl; | ||
94 | } | ||
95 | |||
96 | |||
97 | GLOBAL(JHUFF_TBL *) | ||
98 | jpeg_alloc_huff_table (j_common_ptr cinfo) | ||
99 | { | ||
100 | JHUFF_TBL *tbl; | ||
101 | |||
102 | tbl = (JHUFF_TBL *) | ||
103 | (*cinfo->mem->alloc_small) (cinfo, JPOOL_PERMANENT, SIZEOF(JHUFF_TBL)); | ||
104 | tbl->sent_table = FALSE; /* make sure this is false in any new table */ | ||
105 | return tbl; | ||
106 | } | ||