| 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 g_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(g_bmpcache)) && (cache_idx < NUM_ELEMENTS(g_bmpcache[0]))) |
| 36 |
{ |
| 37 |
bitmap = g_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(g_bmpcache)) && (cache_idx < NUM_ELEMENTS(g_bmpcache[0]))) |
| 53 |
{ |
| 54 |
old = g_bmpcache[cache_id][cache_idx]; |
| 55 |
if (old != NULL) |
| 56 |
ui_destroy_bitmap(old); |
| 57 |
|
| 58 |
g_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 g_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(g_fontcache)) && (character < NUM_ELEMENTS(g_fontcache[0]))) |
| 77 |
{ |
| 78 |
glyph = &g_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(g_fontcache)) && (character < NUM_ELEMENTS(g_fontcache[0]))) |
| 95 |
{ |
| 96 |
glyph = &g_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 g_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(g_textcache)) |
| 123 |
{ |
| 124 |
text = &g_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(g_textcache)) |
| 140 |
{ |
| 141 |
text = &g_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 g_deskcache[0x38400 * 4]; |
| 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 > sizeof(g_deskcache)) |
| 166 |
offset = 0; |
| 167 |
|
| 168 |
if ((offset + length) <= sizeof(g_deskcache)) |
| 169 |
{ |
| 170 |
return &g_deskcache[offset]; |
| 171 |
} |
| 172 |
|
| 173 |
error("get desktop %d:%d\n", offset, length); |
| 174 |
return NULL; |
| 175 |
} |
| 176 |
|
| 177 |
/* Store desktop data in the cache */ |
| 178 |
void |
| 179 |
cache_put_desktop(uint32 offset, int cx, int cy, int scanline, int bytes_per_pixel, uint8 * data) |
| 180 |
{ |
| 181 |
int length = cx * cy * bytes_per_pixel; |
| 182 |
|
| 183 |
if (offset > sizeof(g_deskcache)) |
| 184 |
offset = 0; |
| 185 |
|
| 186 |
if ((offset + length) <= sizeof(g_deskcache)) |
| 187 |
{ |
| 188 |
cx *= bytes_per_pixel; |
| 189 |
while (cy--) |
| 190 |
{ |
| 191 |
memcpy(&g_deskcache[offset], data, cx); |
| 192 |
data += scanline; |
| 193 |
offset += cx; |
| 194 |
} |
| 195 |
} |
| 196 |
else |
| 197 |
{ |
| 198 |
error("put desktop %d:%d\n", offset, length); |
| 199 |
} |
| 200 |
} |
| 201 |
|
| 202 |
|
| 203 |
/* CURSOR CACHE */ |
| 204 |
static HCURSOR g_cursorcache[0x20]; |
| 205 |
|
| 206 |
/* Retrieve cursor from cache */ |
| 207 |
HCURSOR |
| 208 |
cache_get_cursor(uint16 cache_idx) |
| 209 |
{ |
| 210 |
HCURSOR cursor; |
| 211 |
|
| 212 |
if (cache_idx < NUM_ELEMENTS(g_cursorcache)) |
| 213 |
{ |
| 214 |
cursor = g_cursorcache[cache_idx]; |
| 215 |
if (cursor != NULL) |
| 216 |
return cursor; |
| 217 |
} |
| 218 |
|
| 219 |
error("get cursor %d\n", cache_idx); |
| 220 |
return NULL; |
| 221 |
} |
| 222 |
|
| 223 |
/* Store cursor in cache */ |
| 224 |
void |
| 225 |
cache_put_cursor(uint16 cache_idx, HCURSOR cursor) |
| 226 |
{ |
| 227 |
HCURSOR old; |
| 228 |
|
| 229 |
if (cache_idx < NUM_ELEMENTS(g_cursorcache)) |
| 230 |
{ |
| 231 |
old = g_cursorcache[cache_idx]; |
| 232 |
if (old != NULL) |
| 233 |
ui_destroy_cursor(old); |
| 234 |
|
| 235 |
g_cursorcache[cache_idx] = cursor; |
| 236 |
} |
| 237 |
else |
| 238 |
{ |
| 239 |
error("put cursor %d\n", cache_idx); |
| 240 |
} |
| 241 |
} |
Parent Directory
| 
Revision Log