diff options
Diffstat (limited to 'libraries/irrlicht-1.8/source/Irrlicht/jpeglib/jmemansi.c')
-rw-r--r-- | libraries/irrlicht-1.8/source/Irrlicht/jpeglib/jmemansi.c | 334 |
1 files changed, 167 insertions, 167 deletions
diff --git a/libraries/irrlicht-1.8/source/Irrlicht/jpeglib/jmemansi.c b/libraries/irrlicht-1.8/source/Irrlicht/jpeglib/jmemansi.c index b5da474..2d93e49 100644 --- a/libraries/irrlicht-1.8/source/Irrlicht/jpeglib/jmemansi.c +++ b/libraries/irrlicht-1.8/source/Irrlicht/jpeglib/jmemansi.c | |||
@@ -1,167 +1,167 @@ | |||
1 | /* | 1 | /* |
2 | * jmemansi.c | 2 | * jmemansi.c |
3 | * | 3 | * |
4 | * Copyright (C) 1992-1996, Thomas G. Lane. | 4 | * Copyright (C) 1992-1996, Thomas G. Lane. |
5 | * This file is part of the Independent JPEG Group's software. | 5 | * This file is part of the Independent JPEG Group's software. |
6 | * For conditions of distribution and use, see the accompanying README file. | 6 | * For conditions of distribution and use, see the accompanying README file. |
7 | * | 7 | * |
8 | * This file provides a simple generic implementation of the system- | 8 | * This file provides a simple generic implementation of the system- |
9 | * dependent portion of the JPEG memory manager. This implementation | 9 | * dependent portion of the JPEG memory manager. This implementation |
10 | * assumes that you have the ANSI-standard library routine tmpfile(). | 10 | * assumes that you have the ANSI-standard library routine tmpfile(). |
11 | * Also, the problem of determining the amount of memory available | 11 | * Also, the problem of determining the amount of memory available |
12 | * is shoved onto the user. | 12 | * is shoved onto the user. |
13 | */ | 13 | */ |
14 | 14 | ||
15 | #define JPEG_INTERNALS | 15 | #define JPEG_INTERNALS |
16 | #include "jinclude.h" | 16 | #include "jinclude.h" |
17 | #include "jpeglib.h" | 17 | #include "jpeglib.h" |
18 | #include "jmemsys.h" /* import the system-dependent declarations */ | 18 | #include "jmemsys.h" /* import the system-dependent declarations */ |
19 | 19 | ||
20 | #ifndef HAVE_STDLIB_H /* <stdlib.h> should declare malloc(),free() */ | 20 | #ifndef HAVE_STDLIB_H /* <stdlib.h> should declare malloc(),free() */ |
21 | extern void * malloc JPP((size_t size)); | 21 | extern void * malloc JPP((size_t size)); |
22 | extern void free JPP((void *ptr)); | 22 | extern void free JPP((void *ptr)); |
23 | #endif | 23 | #endif |
24 | 24 | ||
25 | #ifndef SEEK_SET /* pre-ANSI systems may not define this; */ | 25 | #ifndef SEEK_SET /* pre-ANSI systems may not define this; */ |
26 | #define SEEK_SET 0 /* if not, assume 0 is correct */ | 26 | #define SEEK_SET 0 /* if not, assume 0 is correct */ |
27 | #endif | 27 | #endif |
28 | 28 | ||
29 | 29 | ||
30 | /* | 30 | /* |
31 | * Memory allocation and freeing are controlled by the regular library | 31 | * Memory allocation and freeing are controlled by the regular library |
32 | * routines malloc() and free(). | 32 | * routines malloc() and free(). |
33 | */ | 33 | */ |
34 | 34 | ||
35 | GLOBAL(void *) | 35 | GLOBAL(void *) |
36 | jpeg_get_small (j_common_ptr cinfo, size_t sizeofobject) | 36 | jpeg_get_small (j_common_ptr cinfo, size_t sizeofobject) |
37 | { | 37 | { |
38 | return (void *) malloc(sizeofobject); | 38 | return (void *) malloc(sizeofobject); |
39 | } | 39 | } |
40 | 40 | ||
41 | GLOBAL(void) | 41 | GLOBAL(void) |
42 | jpeg_free_small (j_common_ptr cinfo, void * object, size_t sizeofobject) | 42 | jpeg_free_small (j_common_ptr cinfo, void * object, size_t sizeofobject) |
43 | { | 43 | { |
44 | free(object); | 44 | free(object); |
45 | } | 45 | } |
46 | 46 | ||
47 | 47 | ||
48 | /* | 48 | /* |
49 | * "Large" objects are treated the same as "small" ones. | 49 | * "Large" objects are treated the same as "small" ones. |
50 | * NB: although we include FAR keywords in the routine declarations, | 50 | * NB: although we include FAR keywords in the routine declarations, |
51 | * this file won't actually work in 80x86 small/medium model; at least, | 51 | * this file won't actually work in 80x86 small/medium model; at least, |
52 | * you probably won't be able to process useful-size images in only 64KB. | 52 | * you probably won't be able to process useful-size images in only 64KB. |
53 | */ | 53 | */ |
54 | 54 | ||
55 | GLOBAL(void FAR *) | 55 | GLOBAL(void FAR *) |
56 | jpeg_get_large (j_common_ptr cinfo, size_t sizeofobject) | 56 | jpeg_get_large (j_common_ptr cinfo, size_t sizeofobject) |
57 | { | 57 | { |
58 | return (void FAR *) malloc(sizeofobject); | 58 | return (void FAR *) malloc(sizeofobject); |
59 | } | 59 | } |
60 | 60 | ||
61 | GLOBAL(void) | 61 | GLOBAL(void) |
62 | jpeg_free_large (j_common_ptr cinfo, void FAR * object, size_t sizeofobject) | 62 | jpeg_free_large (j_common_ptr cinfo, void FAR * object, size_t sizeofobject) |
63 | { | 63 | { |
64 | free(object); | 64 | free(object); |
65 | } | 65 | } |
66 | 66 | ||
67 | 67 | ||
68 | /* | 68 | /* |
69 | * This routine computes the total memory space available for allocation. | 69 | * This routine computes the total memory space available for allocation. |
70 | * It's impossible to do this in a portable way; our current solution is | 70 | * It's impossible to do this in a portable way; our current solution is |
71 | * to make the user tell us (with a default value set at compile time). | 71 | * to make the user tell us (with a default value set at compile time). |
72 | * If you can actually get the available space, it's a good idea to subtract | 72 | * If you can actually get the available space, it's a good idea to subtract |
73 | * a slop factor of 5% or so. | 73 | * a slop factor of 5% or so. |
74 | */ | 74 | */ |
75 | 75 | ||
76 | #ifndef DEFAULT_MAX_MEM /* so can override from makefile */ | 76 | #ifndef DEFAULT_MAX_MEM /* so can override from makefile */ |
77 | #define DEFAULT_MAX_MEM 1000000L /* default: one megabyte */ | 77 | #define DEFAULT_MAX_MEM 1000000L /* default: one megabyte */ |
78 | #endif | 78 | #endif |
79 | 79 | ||
80 | GLOBAL(long) | 80 | GLOBAL(long) |
81 | jpeg_mem_available (j_common_ptr cinfo, long min_bytes_needed, | 81 | jpeg_mem_available (j_common_ptr cinfo, long min_bytes_needed, |
82 | long max_bytes_needed, long already_allocated) | 82 | long max_bytes_needed, long already_allocated) |
83 | { | 83 | { |
84 | return cinfo->mem->max_memory_to_use - already_allocated; | 84 | return cinfo->mem->max_memory_to_use - already_allocated; |
85 | } | 85 | } |
86 | 86 | ||
87 | 87 | ||
88 | /* | 88 | /* |
89 | * Backing store (temporary file) management. | 89 | * Backing store (temporary file) management. |
90 | * Backing store objects are only used when the value returned by | 90 | * Backing store objects are only used when the value returned by |
91 | * jpeg_mem_available is less than the total space needed. You can dispense | 91 | * jpeg_mem_available is less than the total space needed. You can dispense |
92 | * with these routines if you have plenty of virtual memory; see jmemnobs.c. | 92 | * with these routines if you have plenty of virtual memory; see jmemnobs.c. |
93 | */ | 93 | */ |
94 | 94 | ||
95 | 95 | ||
96 | METHODDEF(void) | 96 | METHODDEF(void) |
97 | read_backing_store (j_common_ptr cinfo, backing_store_ptr info, | 97 | read_backing_store (j_common_ptr cinfo, backing_store_ptr info, |
98 | void FAR * buffer_address, | 98 | void FAR * buffer_address, |
99 | long file_offset, long byte_count) | 99 | long file_offset, long byte_count) |
100 | { | 100 | { |
101 | if (fseek(info->temp_file, file_offset, SEEK_SET)) | 101 | if (fseek(info->temp_file, file_offset, SEEK_SET)) |
102 | ERREXIT(cinfo, JERR_TFILE_SEEK); | 102 | ERREXIT(cinfo, JERR_TFILE_SEEK); |
103 | if (JFREAD(info->temp_file, buffer_address, byte_count) | 103 | if (JFREAD(info->temp_file, buffer_address, byte_count) |
104 | != (size_t) byte_count) | 104 | != (size_t) byte_count) |
105 | ERREXIT(cinfo, JERR_TFILE_READ); | 105 | ERREXIT(cinfo, JERR_TFILE_READ); |
106 | } | 106 | } |
107 | 107 | ||
108 | 108 | ||
109 | METHODDEF(void) | 109 | METHODDEF(void) |
110 | write_backing_store (j_common_ptr cinfo, backing_store_ptr info, | 110 | write_backing_store (j_common_ptr cinfo, backing_store_ptr info, |
111 | void FAR * buffer_address, | 111 | void FAR * buffer_address, |
112 | long file_offset, long byte_count) | 112 | long file_offset, long byte_count) |
113 | { | 113 | { |
114 | if (fseek(info->temp_file, file_offset, SEEK_SET)) | 114 | if (fseek(info->temp_file, file_offset, SEEK_SET)) |
115 | ERREXIT(cinfo, JERR_TFILE_SEEK); | 115 | ERREXIT(cinfo, JERR_TFILE_SEEK); |
116 | if (JFWRITE(info->temp_file, buffer_address, byte_count) | 116 | if (JFWRITE(info->temp_file, buffer_address, byte_count) |
117 | != (size_t) byte_count) | 117 | != (size_t) byte_count) |
118 | ERREXIT(cinfo, JERR_TFILE_WRITE); | 118 | ERREXIT(cinfo, JERR_TFILE_WRITE); |
119 | } | 119 | } |
120 | 120 | ||
121 | 121 | ||
122 | METHODDEF(void) | 122 | METHODDEF(void) |
123 | close_backing_store (j_common_ptr cinfo, backing_store_ptr info) | 123 | close_backing_store (j_common_ptr cinfo, backing_store_ptr info) |
124 | { | 124 | { |
125 | fclose(info->temp_file); | 125 | fclose(info->temp_file); |
126 | /* Since this implementation uses tmpfile() to create the file, | 126 | /* Since this implementation uses tmpfile() to create the file, |
127 | * no explicit file deletion is needed. | 127 | * no explicit file deletion is needed. |
128 | */ | 128 | */ |
129 | } | 129 | } |
130 | 130 | ||
131 | 131 | ||
132 | /* | 132 | /* |
133 | * Initial opening of a backing-store object. | 133 | * Initial opening of a backing-store object. |
134 | * | 134 | * |
135 | * This version uses tmpfile(), which constructs a suitable file name | 135 | * This version uses tmpfile(), which constructs a suitable file name |
136 | * behind the scenes. We don't have to use info->temp_name[] at all; | 136 | * behind the scenes. We don't have to use info->temp_name[] at all; |
137 | * indeed, we can't even find out the actual name of the temp file. | 137 | * indeed, we can't even find out the actual name of the temp file. |
138 | */ | 138 | */ |
139 | 139 | ||
140 | GLOBAL(void) | 140 | GLOBAL(void) |
141 | jpeg_open_backing_store (j_common_ptr cinfo, backing_store_ptr info, | 141 | jpeg_open_backing_store (j_common_ptr cinfo, backing_store_ptr info, |
142 | long total_bytes_needed) | 142 | long total_bytes_needed) |
143 | { | 143 | { |
144 | if ((info->temp_file = tmpfile()) == NULL) | 144 | if ((info->temp_file = tmpfile()) == NULL) |
145 | ERREXITS(cinfo, JERR_TFILE_CREATE, ""); | 145 | ERREXITS(cinfo, JERR_TFILE_CREATE, ""); |
146 | info->read_backing_store = read_backing_store; | 146 | info->read_backing_store = read_backing_store; |
147 | info->write_backing_store = write_backing_store; | 147 | info->write_backing_store = write_backing_store; |
148 | info->close_backing_store = close_backing_store; | 148 | info->close_backing_store = close_backing_store; |
149 | } | 149 | } |
150 | 150 | ||
151 | 151 | ||
152 | /* | 152 | /* |
153 | * These routines take care of any system-dependent initialization and | 153 | * These routines take care of any system-dependent initialization and |
154 | * cleanup required. | 154 | * cleanup required. |
155 | */ | 155 | */ |
156 | 156 | ||
157 | GLOBAL(long) | 157 | GLOBAL(long) |
158 | jpeg_mem_init (j_common_ptr cinfo) | 158 | jpeg_mem_init (j_common_ptr cinfo) |
159 | { | 159 | { |
160 | return DEFAULT_MAX_MEM; /* default for max_memory_to_use */ | 160 | return DEFAULT_MAX_MEM; /* default for max_memory_to_use */ |
161 | } | 161 | } |
162 | 162 | ||
163 | GLOBAL(void) | 163 | GLOBAL(void) |
164 | jpeg_mem_term (j_common_ptr cinfo) | 164 | jpeg_mem_term (j_common_ptr cinfo) |
165 | { | 165 | { |
166 | /* no work */ | 166 | /* no work */ |
167 | } | 167 | } |