Diffstat (limited to 'noncore/net/opierdesktop/cache.cpp') (more/less context) (show 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 @@ +/* + rdesktop: A Remote Desktop Protocol client. + Cache routines + Copyright (C) Matthew Chapman 1999-2002 + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 2 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software + Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. +*/ + +#include "rdesktop.h" + +#define NUM_ELEMENTS(array) (sizeof(array) / sizeof(array[0])) + + +/* BITMAP CACHE */ +static HBITMAP bmpcache[3][600]; + +/* Retrieve a bitmap from the cache */ +HBITMAP +cache_get_bitmap(uint8 cache_id, uint16 cache_idx) +{ + HBITMAP bitmap; + + if ((cache_id < NUM_ELEMENTS(bmpcache)) && (cache_idx < NUM_ELEMENTS(bmpcache[0]))) + { + bitmap = bmpcache[cache_id][cache_idx]; + if (bitmap != NULL) + return bitmap; + } + + error("get bitmap %d:%d\n", cache_id, cache_idx); + return NULL; +} + +/* Store a bitmap in the cache */ +void +cache_put_bitmap(uint8 cache_id, uint16 cache_idx, HBITMAP bitmap) +{ + HBITMAP old; + + if ((cache_id < NUM_ELEMENTS(bmpcache)) && (cache_idx < NUM_ELEMENTS(bmpcache[0]))) + { + old = bmpcache[cache_id][cache_idx]; + if (old != NULL) + ui_destroy_bitmap(old); + + bmpcache[cache_id][cache_idx] = bitmap; + } + else + { + error("put bitmap %d:%d\n", cache_id, cache_idx); + } +} + + +/* FONT CACHE */ +static FONTGLYPH fontcache[12][256]; + +/* Retrieve a glyph from the font cache */ +FONTGLYPH * +cache_get_font(uint8 font, uint16 character) +{ + FONTGLYPH *glyph; + + if ((font < NUM_ELEMENTS(fontcache)) && (character < NUM_ELEMENTS(fontcache[0]))) + { + glyph = &fontcache[font][character]; + if (glyph->pixmap != NULL) + return glyph; + } + + error("get font %d:%d\n", font, character); + return NULL; +} + +/* Store a glyph in the font cache */ +void +cache_put_font(uint8 font, uint16 character, uint16 offset, + uint16 baseline, uint16 width, uint16 height, HGLYPH pixmap) +{ + FONTGLYPH *glyph; + + if ((font < NUM_ELEMENTS(fontcache)) && (character < NUM_ELEMENTS(fontcache[0]))) + { + glyph = &fontcache[font][character]; + if (glyph->pixmap != NULL) + ui_destroy_glyph(glyph->pixmap); + + glyph->offset = offset; + glyph->baseline = baseline; + glyph->width = width; + glyph->height = height; + glyph->pixmap = pixmap; + } + else + { + error("put font %d:%d\n", font, character); + } +} + + +/* TEXT CACHE */ +static DATABLOB textcache[256]; + +/* Retrieve a text item from the cache */ +DATABLOB * +cache_get_text(uint8 cache_id) +{ + DATABLOB *text; + + if (cache_id < NUM_ELEMENTS(textcache)) + { + text = &textcache[cache_id]; + if (text->data != NULL) + return text; + } + + error("get text %d\n", cache_id); + return NULL; +} + +/* Store a text item in the cache */ +void +cache_put_text(uint8 cache_id, void *data, int length) +{ + DATABLOB *text; + + if (cache_id < NUM_ELEMENTS(textcache)) + { + text = &textcache[cache_id]; + if (text->data != NULL) + xfree(text->data); + + text->data = xmalloc(length); + text->size = length; + memcpy(text->data, data, length); + } + else + { + error("put text %d\n", cache_id); + } +} + + +/* DESKTOP CACHE */ +static uint8 deskcache[0x38400]; + +/* Retrieve desktop data from the cache */ +uint8 * +cache_get_desktop(uint32 offset, int cx, int cy, int bytes_per_pixel) +{ + int length = cx * cy * bytes_per_pixel; + + if ((offset + length) <= sizeof(deskcache)) + { + return &deskcache[offset]; + } + + error("get desktop %d:%d\n", offset, length); + return NULL; +} + +/* Store desktop data in the cache */ +void +cache_put_desktop(uint32 offset, int cx, int cy, int scanline, int bytes_per_pixel, uint8 * data) +{ + int length = cx * cy * bytes_per_pixel; + + if ((offset + length) <= sizeof(deskcache)) + { + cx *= bytes_per_pixel; + while (cy--) + { + memcpy(&deskcache[offset], data, cx); + data += scanline; + offset += cx; + } + } + else + { + error("put desktop %d:%d\n", offset, length); + } +} + + +/* CURSOR CACHE */ +static HCURSOR cursorcache[0x20]; + +/* Retrieve cursor from cache */ +HCURSOR +cache_get_cursor(uint16 cache_idx) +{ + HCURSOR cursor; + + if (cache_idx < NUM_ELEMENTS(cursorcache)) + { + cursor = cursorcache[cache_idx]; + if (cursor != NULL) + return cursor; + } + + error("get cursor %d\n", cache_idx); + return NULL; +} + +/* Store cursor in cache */ +void +cache_put_cursor(uint16 cache_idx, HCURSOR cursor) +{ + HCURSOR old; + + if (cache_idx < NUM_ELEMENTS(cursorcache)) + { + old = cursorcache[cache_idx]; + if (old != NULL) + ui_destroy_cursor(old); + + cursorcache[cache_idx] = cursor; + } + else + { + error("put cursor %d\n", cache_idx); + } +} |