Diffstat (limited to 'noncore/net/opierdesktop/cache.cpp') (more/less context) (ignore whitespace changes)
-rw-r--r-- | noncore/net/opierdesktop/cache.cpp | 235 |
1 files changed, 235 insertions, 0 deletions
diff --git a/noncore/net/opierdesktop/cache.cpp b/noncore/net/opierdesktop/cache.cpp new file mode 100644 index 0000000..42ab135 --- a/dev/null +++ b/noncore/net/opierdesktop/cache.cpp | |||
@@ -0,0 +1,235 @@ | |||
1 | /* | ||
2 | rdesktop: A Remote Desktop Protocol client. | ||
3 | Cache routines | ||
4 | Copyright (C) Matthew Chapman 1999-2002 | ||
5 | |||
6 | This program is free software; you can redistribute it and/or modify | ||
7 | it under the terms of the GNU General Public License as published by | ||
8 | the Free Software Foundation; either version 2 of the License, or | ||
9 | (at your option) any later version. | ||
10 | |||
11 | This program is distributed in the hope that it will be useful, | ||
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
14 | GNU General Public License for more details. | ||
15 | |||
16 | You should have received a copy of the GNU General Public License | ||
17 | along with this program; if not, write to the Free Software | ||
18 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | ||
19 | */ | ||
20 | |||
21 | #include "rdesktop.h" | ||
22 | |||
23 | #define NUM_ELEMENTS(array) (sizeof(array) / sizeof(array[0])) | ||
24 | |||
25 | |||
26 | /* BITMAP CACHE */ | ||
27 | static HBITMAP bmpcache[3][600]; | ||
28 | |||
29 | /* Retrieve a bitmap from the cache */ | ||
30 | HBITMAP | ||
31 | cache_get_bitmap(uint8 cache_id, uint16 cache_idx) | ||
32 | { | ||
33 | HBITMAP bitmap; | ||
34 | |||
35 | if ((cache_id < NUM_ELEMENTS(bmpcache)) && (cache_idx < NUM_ELEMENTS(bmpcache[0]))) | ||
36 | { | ||
37 | bitmap = bmpcache[cache_id][cache_idx]; | ||
38 | if (bitmap != NULL) | ||
39 | return bitmap; | ||
40 | } | ||
41 | |||
42 | error("get bitmap %d:%d\n", cache_id, cache_idx); | ||
43 | return NULL; | ||
44 | } | ||
45 | |||
46 | /* Store a bitmap in the cache */ | ||
47 | void | ||
48 | cache_put_bitmap(uint8 cache_id, uint16 cache_idx, HBITMAP bitmap) | ||
49 | { | ||
50 | HBITMAP old; | ||
51 | |||
52 | if ((cache_id < NUM_ELEMENTS(bmpcache)) && (cache_idx < NUM_ELEMENTS(bmpcache[0]))) | ||
53 | { | ||
54 | old = bmpcache[cache_id][cache_idx]; | ||
55 | if (old != NULL) | ||
56 | ui_destroy_bitmap(old); | ||
57 | |||
58 | bmpcache[cache_id][cache_idx] = bitmap; | ||
59 | } | ||
60 | else | ||
61 | { | ||
62 | error("put bitmap %d:%d\n", cache_id, cache_idx); | ||
63 | } | ||
64 | } | ||
65 | |||
66 | |||
67 | /* FONT CACHE */ | ||
68 | static FONTGLYPH fontcache[12][256]; | ||
69 | |||
70 | /* Retrieve a glyph from the font cache */ | ||
71 | FONTGLYPH * | ||
72 | cache_get_font(uint8 font, uint16 character) | ||
73 | { | ||
74 | FONTGLYPH *glyph; | ||
75 | |||
76 | if ((font < NUM_ELEMENTS(fontcache)) && (character < NUM_ELEMENTS(fontcache[0]))) | ||
77 | { | ||
78 | glyph = &fontcache[font][character]; | ||
79 | if (glyph->pixmap != NULL) | ||
80 | return glyph; | ||
81 | } | ||
82 | |||
83 | error("get font %d:%d\n", font, character); | ||
84 | return NULL; | ||
85 | } | ||
86 | |||
87 | /* Store a glyph in the font cache */ | ||
88 | void | ||
89 | cache_put_font(uint8 font, uint16 character, uint16 offset, | ||
90 | uint16 baseline, uint16 width, uint16 height, HGLYPH pixmap) | ||
91 | { | ||
92 | FONTGLYPH *glyph; | ||
93 | |||
94 | if ((font < NUM_ELEMENTS(fontcache)) && (character < NUM_ELEMENTS(fontcache[0]))) | ||
95 | { | ||
96 | glyph = &fontcache[font][character]; | ||
97 | if (glyph->pixmap != NULL) | ||
98 | ui_destroy_glyph(glyph->pixmap); | ||
99 | |||
100 | glyph->offset = offset; | ||
101 | glyph->baseline = baseline; | ||
102 | glyph->width = width; | ||
103 | glyph->height = height; | ||
104 | glyph->pixmap = pixmap; | ||
105 | } | ||
106 | else | ||
107 | { | ||
108 | error("put font %d:%d\n", font, character); | ||
109 | } | ||
110 | } | ||
111 | |||
112 | |||
113 | /* TEXT CACHE */ | ||
114 | static DATABLOB textcache[256]; | ||
115 | |||
116 | /* Retrieve a text item from the cache */ | ||
117 | DATABLOB * | ||
118 | cache_get_text(uint8 cache_id) | ||
119 | { | ||
120 | DATABLOB *text; | ||
121 | |||
122 | if (cache_id < NUM_ELEMENTS(textcache)) | ||
123 | { | ||
124 | text = &textcache[cache_id]; | ||
125 | if (text->data != NULL) | ||
126 | return text; | ||
127 | } | ||
128 | |||
129 | error("get text %d\n", cache_id); | ||
130 | return NULL; | ||
131 | } | ||
132 | |||
133 | /* Store a text item in the cache */ | ||
134 | void | ||
135 | cache_put_text(uint8 cache_id, void *data, int length) | ||
136 | { | ||
137 | DATABLOB *text; | ||
138 | |||
139 | if (cache_id < NUM_ELEMENTS(textcache)) | ||
140 | { | ||
141 | text = &textcache[cache_id]; | ||
142 | if (text->data != NULL) | ||
143 | xfree(text->data); | ||
144 | |||
145 | text->data = xmalloc(length); | ||
146 | text->size = length; | ||
147 | memcpy(text->data, data, length); | ||
148 | } | ||
149 | else | ||
150 | { | ||
151 | error("put text %d\n", cache_id); | ||
152 | } | ||
153 | } | ||
154 | |||
155 | |||
156 | /* DESKTOP CACHE */ | ||
157 | static uint8 deskcache[0x38400]; | ||
158 | |||
159 | /* Retrieve desktop data from the cache */ | ||
160 | uint8 * | ||
161 | cache_get_desktop(uint32 offset, int cx, int cy, int bytes_per_pixel) | ||
162 | { | ||
163 | int length = cx * cy * bytes_per_pixel; | ||
164 | |||
165 | if ((offset + length) <= sizeof(deskcache)) | ||
166 | { | ||
167 | return &deskcache[offset]; | ||
168 | } | ||
169 | |||
170 | error("get desktop %d:%d\n", offset, length); | ||
171 | return NULL; | ||
172 | } | ||
173 | |||
174 | /* Store desktop data in the cache */ | ||
175 | void | ||
176 | cache_put_desktop(uint32 offset, int cx, int cy, int scanline, int bytes_per_pixel, uint8 * data) | ||
177 | { | ||
178 | int length = cx * cy * bytes_per_pixel; | ||
179 | |||
180 | if ((offset + length) <= sizeof(deskcache)) | ||
181 | { | ||
182 | cx *= bytes_per_pixel; | ||
183 | while (cy--) | ||
184 | { | ||
185 | memcpy(&deskcache[offset], data, cx); | ||
186 | data += scanline; | ||
187 | offset += cx; | ||
188 | } | ||
189 | } | ||
190 | else | ||
191 | { | ||
192 | error("put desktop %d:%d\n", offset, length); | ||
193 | } | ||
194 | } | ||
195 | |||
196 | |||
197 | /* CURSOR CACHE */ | ||
198 | static HCURSOR cursorcache[0x20]; | ||
199 | |||
200 | /* Retrieve cursor from cache */ | ||
201 | HCURSOR | ||
202 | cache_get_cursor(uint16 cache_idx) | ||
203 | { | ||
204 | HCURSOR cursor; | ||
205 | |||
206 | if (cache_idx < NUM_ELEMENTS(cursorcache)) | ||
207 | { | ||
208 | cursor = cursorcache[cache_idx]; | ||
209 | if (cursor != NULL) | ||
210 | return cursor; | ||
211 | } | ||
212 | |||
213 | error("get cursor %d\n", cache_idx); | ||
214 | return NULL; | ||
215 | } | ||
216 | |||
217 | /* Store cursor in cache */ | ||
218 | void | ||
219 | cache_put_cursor(uint16 cache_idx, HCURSOR cursor) | ||
220 | { | ||
221 | HCURSOR old; | ||
222 | |||
223 | if (cache_idx < NUM_ELEMENTS(cursorcache)) | ||
224 | { | ||
225 | old = cursorcache[cache_idx]; | ||
226 | if (old != NULL) | ||
227 | ui_destroy_cursor(old); | ||
228 | |||
229 | cursorcache[cache_idx] = cursor; | ||
230 | } | ||
231 | else | ||
232 | { | ||
233 | error("put cursor %d\n", cache_idx); | ||
234 | } | ||
235 | } | ||