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/* |
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rdesktop: A Remote Desktop Protocol client. |
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Cache routines |
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Copyright (C) Matthew Chapman 1999-2000 |
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|
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This program is free software; you can redistribute it and/or modify |
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it under the terms of the GNU General Public License as published by |
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the Free Software Foundation; either version 2 of the License, or |
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(at your option) any later version. |
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|
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This program is distributed in the hope that it will be useful, |
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but WITHOUT ANY WARRANTY; without even the implied warranty of |
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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GNU General Public License for more details. |
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|
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You should have received a copy of the GNU General Public License |
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along with this program; if not, write to the Free Software |
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
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*/ |
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|
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#include "rdesktop.h" |
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|
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#define NUM_ELEMENTS(array) (sizeof(array) / sizeof(array[0])) |
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|
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|
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/* BITMAP CACHE */ |
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static HBITMAP bmpcache[3][600]; |
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|
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/* Retrieve a bitmap from the cache */ |
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HBITMAP |
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cache_get_bitmap(uint8 cache_id, uint16 cache_idx) |
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{ |
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HBITMAP bitmap; |
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|
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if ((cache_id < NUM_ELEMENTS(bmpcache)) |
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&& (cache_idx < NUM_ELEMENTS(bmpcache[0]))) |
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{ |
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bitmap = bmpcache[cache_id][cache_idx]; |
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if (bitmap != NULL) |
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return bitmap; |
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} |
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|
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ERROR("get bitmap %d:%d\n", cache_id, cache_idx); |
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return NULL; |
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} |
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|
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/* Store a bitmap in the cache */ |
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void |
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cache_put_bitmap(uint8 cache_id, uint16 cache_idx, HBITMAP bitmap) |
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{ |
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HBITMAP old; |
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|
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if ((cache_id < NUM_ELEMENTS(bmpcache)) |
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&& (cache_idx < NUM_ELEMENTS(bmpcache[0]))) |
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{ |
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old = bmpcache[cache_id][cache_idx]; |
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if (old != NULL) |
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ui_destroy_bitmap(old); |
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|
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bmpcache[cache_id][cache_idx] = bitmap; |
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} |
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else |
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{ |
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ERROR("put bitmap %d:%d\n", cache_id, cache_idx); |
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} |
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} |
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|
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|
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/* FONT CACHE */ |
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static FONTGLYPH fontcache[12][256]; |
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|
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/* Retrieve a glyph from the font cache */ |
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FONTGLYPH * |
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cache_get_font(uint8 font, uint16 character) |
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{ |
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FONTGLYPH *glyph; |
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|
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if ((font < NUM_ELEMENTS(fontcache)) |
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&& (character < NUM_ELEMENTS(fontcache[0]))) |
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{ |
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glyph = &fontcache[font][character]; |
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if (glyph->pixmap != NULL) |
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return glyph; |
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} |
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|
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ERROR("get font %d:%d\n", font, character); |
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return NULL; |
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} |
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|
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/* Store a glyph in the font cache */ |
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void |
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cache_put_font(uint8 font, uint16 character, uint16 offset, |
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uint16 baseline, uint16 width, uint16 height, HGLYPH pixmap) |
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{ |
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FONTGLYPH *glyph; |
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|
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if ((font < NUM_ELEMENTS(fontcache)) |
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&& (character < NUM_ELEMENTS(fontcache[0]))) |
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{ |
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glyph = &fontcache[font][character]; |
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if (glyph->pixmap != NULL) |
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ui_destroy_glyph(glyph->pixmap); |
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|
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glyph->offset = offset; |
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glyph->baseline = baseline; |
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glyph->width = width; |
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glyph->height = height; |
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glyph->pixmap = pixmap; |
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} |
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else |
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{ |
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ERROR("put font %d:%d\n", font, character); |
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} |
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} |
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|
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|
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/* TEXT CACHE */ |
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static DATABLOB textcache[256]; |
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|
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/* Retrieve a text item from the cache */ |
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DATABLOB * |
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cache_get_text(uint8 cache_id) |
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{ |
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DATABLOB *text; |
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|
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if (cache_id < NUM_ELEMENTS(textcache)) |
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{ |
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text = &textcache[cache_id]; |
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if (text->data != NULL) |
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return text; |
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} |
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|
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ERROR("get text %d\n", cache_id); |
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return NULL; |
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} |
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|
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/* Store a text item in the cache */ |
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void |
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cache_put_text(uint8 cache_id, void *data, int length) |
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{ |
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DATABLOB *text; |
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|
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if (cache_id < NUM_ELEMENTS(textcache)) |
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{ |
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text = &textcache[cache_id]; |
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if (text->data != NULL) |
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xfree(text->data); |
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|
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text->data = xmalloc(length); |
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text->size = length; |
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memcpy(text->data, data, length); |
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} |
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else |
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{ |
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ERROR("put text %d\n", cache_id); |
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} |
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} |
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|
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|
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/* DESKTOP CACHE */ |
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static uint8 deskcache[0x38400]; |
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|
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/* Retrieve desktop data from the cache */ |
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uint8 * |
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cache_get_desktop(uint32 offset, int cx, int cy) |
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{ |
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int length = cx * cy; |
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|
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if ((offset + length) <= sizeof(deskcache)) |
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{ |
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return &deskcache[offset]; |
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} |
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|
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ERROR("get desktop %d:%d\n", offset, length); |
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return NULL; |
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} |
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|
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/* Store desktop data in the cache */ |
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void |
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cache_put_desktop(uint32 offset, int cx, int cy, int scanline, uint8 *data) |
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{ |
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int length = cx * cy; |
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|
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if ((offset + length) <= sizeof(deskcache)) |
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{ |
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while (cy--) |
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{ |
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memcpy(&deskcache[offset], data, cx); |
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data += scanline; |
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offset += cx; |
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} |
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} |
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else |
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{ |
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ERROR("put desktop %d:%d\n", offset, length); |
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} |
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} |
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