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466 lines
12 KiB
466 lines
12 KiB
/*
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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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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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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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xrdp: A Remote Desktop Protocol server.
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Copyright (C) Jay Sorg 2004-2006
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cache
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*/
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#include "xrdp.h"
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/*****************************************************************************/
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struct xrdp_cache* APP_CC
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xrdp_cache_create(struct xrdp_wm* owner,
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struct xrdp_session* session,
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struct xrdp_client_info* client_info)
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{
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struct xrdp_cache* self;
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self = (struct xrdp_cache*)g_malloc(sizeof(struct xrdp_cache), 1);
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self->wm = owner;
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self->session = session;
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self->use_bitmap_comp = client_info->use_bitmap_comp;
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self->cache1_entries = client_info->cache1_entries;
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self->cache1_size = client_info->cache1_size;
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self->cache2_entries = client_info->cache2_entries;
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self->cache2_size = client_info->cache2_size;
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self->cache3_entries = client_info->cache3_entries;
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self->cache3_size = client_info->cache3_size;
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self->pointer_cache_entries = client_info->pointer_cache_entries;
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return self;
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}
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/*****************************************************************************/
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void APP_CC
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xrdp_cache_delete(struct xrdp_cache* self)
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{
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int i;
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int j;
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if (self == 0)
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{
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return;
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}
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/* free all the cached bitmaps */
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for (i = 0; i < 3; i++)
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{
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for (j = 0; j < 600; j++)
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{
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xrdp_bitmap_delete(self->bitmap_items[i][j].bitmap);
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}
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}
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/* free all the cached font items */
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for (i = 0; i < 12; i++)
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{
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for (j = 0; j < 256; j++)
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{
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g_free(self->char_items[i][j].font_item.data);
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}
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}
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g_free(self);
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}
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/*****************************************************************************/
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int APP_CC
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xrdp_cache_reset(struct xrdp_cache* self,
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struct xrdp_client_info* client_info)
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{
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struct xrdp_wm* wm;
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struct xrdp_session* session;
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int i;
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int j;
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/* free all the cached bitmaps */
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for (i = 0; i < 3; i++)
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{
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for (j = 0; j < 600; j++)
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{
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xrdp_bitmap_delete(self->bitmap_items[i][j].bitmap);
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}
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}
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/* free all the cached font items */
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for (i = 0; i < 12; i++)
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{
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for (j = 0; j < 256; j++)
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{
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g_free(self->char_items[i][j].font_item.data);
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}
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}
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/* save these */
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wm = self->wm;
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session = self->session;
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/* set whole struct to zero */
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g_memset(self, 0, sizeof(struct xrdp_cache));
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/* set some stuff back */
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self->wm = wm;
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self->session = session;
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self->use_bitmap_comp = client_info->use_bitmap_comp;
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self->cache1_entries = client_info->cache1_entries;
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self->cache1_size = client_info->cache1_size;
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self->cache2_entries = client_info->cache2_entries;
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self->cache2_size = client_info->cache2_size;
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self->cache3_entries = client_info->cache3_entries;
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self->cache3_size = client_info->cache3_size;
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self->pointer_cache_entries = client_info->pointer_cache_entries;
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return 0;
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}
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/*****************************************************************************/
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/* returns cache id */
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int APP_CC
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xrdp_cache_add_bitmap(struct xrdp_cache* self, struct xrdp_bitmap* bitmap)
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{
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int i;
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int j;
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int oldest;
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int cache_id;
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int cache_idx;
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int bmp_size;
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int e;
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int Bpp;
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e = bitmap->width % 4;
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if (e != 0)
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{
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e = 4 - e;
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}
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Bpp = (bitmap->bpp + 7) / 8;
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bmp_size = (bitmap->width + e) * bitmap->height * Bpp;
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self->bitmap_stamp++;
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/* look for match */
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if (bmp_size <= self->cache1_size)
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{
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i = 0;
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for (j = 0; j < self->cache1_entries; j++)
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{
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#ifdef USE_CRC
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if (xrdp_bitmap_compare_with_crc(self->bitmap_items[i][j].bitmap, bitmap))
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#else
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if (xrdp_bitmap_compare(self->bitmap_items[i][j].bitmap, bitmap))
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#endif
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{
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self->bitmap_items[i][j].stamp = self->bitmap_stamp;
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DEBUG(("found bitmap at %d %d\r\n", i, j));
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xrdp_bitmap_delete(bitmap);
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return MAKELONG(j, i);
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}
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}
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}
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else if (bmp_size <= self->cache2_size)
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{
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i = 1;
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for (j = 0; j < self->cache2_entries; j++)
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{
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#ifdef USE_CRC
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if (xrdp_bitmap_compare_with_crc(self->bitmap_items[i][j].bitmap, bitmap))
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#else
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if (xrdp_bitmap_compare(self->bitmap_items[i][j].bitmap, bitmap))
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#endif
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{
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self->bitmap_items[i][j].stamp = self->bitmap_stamp;
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DEBUG(("found bitmap at %d %d\r\n", i, j));
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xrdp_bitmap_delete(bitmap);
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return MAKELONG(j, i);
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}
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}
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}
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else if (bmp_size <= self->cache3_size)
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{
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i = 2;
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for (j = 0; j < self->cache3_entries; j++)
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{
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#ifdef USE_CRC
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if (xrdp_bitmap_compare_with_crc(self->bitmap_items[i][j].bitmap, bitmap))
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#else
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if (xrdp_bitmap_compare(self->bitmap_items[i][j].bitmap, bitmap))
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#endif
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{
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self->bitmap_items[i][j].stamp = self->bitmap_stamp;
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DEBUG(("found bitmap at %d %d\r\n", i, j));
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xrdp_bitmap_delete(bitmap);
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return MAKELONG(j, i);
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}
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}
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}
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else
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{
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g_printf("error in xrdp_cache_add_bitmap, too big(%d)\r\n", bmp_size);
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}
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/* look for oldest */
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cache_id = 0;
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cache_idx = 0;
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oldest = 0x7fffffff;
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if (bmp_size <= self->cache1_size)
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{
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i = 0;
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for (j = 0; j < self->cache1_entries; j++)
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{
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if (self->bitmap_items[i][j].stamp < oldest)
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{
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oldest = self->bitmap_items[i][j].stamp;
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cache_id = i;
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cache_idx = j;
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}
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}
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}
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else if (bmp_size <= self->cache2_size)
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{
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i = 1;
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for (j = 0; j < self->cache2_entries; j++)
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{
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if (self->bitmap_items[i][j].stamp < oldest)
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{
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oldest = self->bitmap_items[i][j].stamp;
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cache_id = i;
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cache_idx = j;
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}
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}
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}
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else if (bmp_size <= self->cache3_size)
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{
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i = 2;
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for (j = 0; j < self->cache3_entries; j++)
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{
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if (self->bitmap_items[i][j].stamp < oldest)
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{
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oldest = self->bitmap_items[i][j].stamp;
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cache_id = i;
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cache_idx = j;
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}
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}
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}
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DEBUG(("adding bitmap at %d %d\r\n", cache_id, cache_idx));
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/* set, send bitmap and return */
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xrdp_bitmap_delete(self->bitmap_items[cache_id][cache_idx].bitmap);
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self->bitmap_items[cache_id][cache_idx].bitmap = bitmap;
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self->bitmap_items[cache_id][cache_idx].stamp = self->bitmap_stamp;
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if (self->use_bitmap_comp)
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{
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libxrdp_orders_send_bitmap(self->session, bitmap->width,
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bitmap->height, bitmap->bpp,
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bitmap->data, cache_id, cache_idx);
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}
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else
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{
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libxrdp_orders_send_raw_bitmap(self->session, bitmap->width,
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bitmap->height, bitmap->bpp,
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bitmap->data, cache_id, cache_idx);
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}
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return MAKELONG(cache_idx, cache_id);
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}
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/*****************************************************************************/
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/* not used */
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/* not sure how to use a palette in rdp */
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int APP_CC
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xrdp_cache_add_palette(struct xrdp_cache* self, int* palette)
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{
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int i;
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int oldest;
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int index;
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if (self == 0)
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{
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return 0;
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}
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if (palette == 0)
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{
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return 0;
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}
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if (self->wm->screen->bpp > 8)
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{
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return 0;
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}
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self->palette_stamp++;
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/* look for match */
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for (i = 0; i < 6; i++)
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{
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if (g_memcmp(palette, self->palette_items[i].palette,
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256 * sizeof(int)) == 0)
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{
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self->palette_items[i].stamp = self->palette_stamp;
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return i;
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}
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}
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/* look for oldest */
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index = 0;
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oldest = 0x7fffffff;
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for (i = 0; i < 6; i++)
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{
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if (self->palette_items[i].stamp < oldest)
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{
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oldest = self->palette_items[i].stamp;
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index = i;
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}
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}
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/* set, send palette and return */
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g_memcpy(self->palette_items[index].palette, palette, 256 * sizeof(int));
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self->palette_items[index].stamp = self->palette_stamp;
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libxrdp_orders_send_palette(self->session, palette, index);
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return index;
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}
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/*****************************************************************************/
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int APP_CC
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xrdp_cache_add_char(struct xrdp_cache* self,
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struct xrdp_font_char* font_item)
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{
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int i;
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int j;
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int oldest;
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int f;
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int c;
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int datasize;
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struct xrdp_font_char* fi;
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self->char_stamp++;
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/* look for match */
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for (i = 7; i < 12; i++)
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{
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for (j = 0; j < 250; j++)
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{
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if (xrdp_font_item_compare(&self->char_items[i][j].font_item, font_item))
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{
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self->char_items[i][j].stamp = self->char_stamp;
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DEBUG(("found font at %d %d\r\n", i, j));
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return MAKELONG(j, i);
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}
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}
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}
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/* look for oldest */
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f = 0;
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c = 0;
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oldest = 0x7fffffff;
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for (i = 7; i < 12; i++)
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{
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for (j = 0; j < 250; j++)
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{
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if (self->char_items[i][j].stamp < oldest)
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{
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oldest = self->char_items[i][j].stamp;
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f = i;
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c = j;
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}
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}
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}
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DEBUG(("adding char at %d %d\r\n", f, c));
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/* set, send char and return */
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fi = &self->char_items[f][c].font_item;
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g_free(fi->data);
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datasize = FONT_DATASIZE(font_item);
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fi->data = (char*)g_malloc(datasize, 1);
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g_memcpy(fi->data, font_item->data, datasize);
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fi->offset = font_item->offset;
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fi->baseline = font_item->baseline;
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fi->width = font_item->width;
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fi->height = font_item->height;
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self->char_items[f][c].stamp = self->char_stamp;
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libxrdp_orders_send_font(self->session, fi, f, c);
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return MAKELONG(c, f);
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}
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/*****************************************************************************/
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/* added the pointer to the cache and send it to client, it also sets the
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client if it finds it
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returns the index in the cache
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does not take ownership of pointer_item */
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int APP_CC
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xrdp_cache_add_pointer(struct xrdp_cache* self,
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struct xrdp_pointer_item* pointer_item)
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{
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int i;
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int oldest;
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int index;
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if (self == 0)
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{
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return 0;
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}
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self->pointer_stamp++;
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/* look for match */
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for (i = 2; i < self->pointer_cache_entries; i++)
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{
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if (self->pointer_items[i].x == pointer_item->x &&
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self->pointer_items[i].y == pointer_item->y &&
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g_memcmp(self->pointer_items[i].data,
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pointer_item->data, 32 * 32 * 3) == 0 &&
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g_memcmp(self->pointer_items[i].mask,
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pointer_item->mask, 32 * 32 / 8) == 0)
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{
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self->pointer_items[i].stamp = self->pointer_stamp;
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xrdp_wm_set_pointer(self->wm, i);
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self->wm->current_pointer = i;
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DEBUG(("found pointer at %d\r\n", i));
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return i;
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}
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}
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/* look for oldest */
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index = 2;
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oldest = 0x7fffffff;
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for (i = 2; i < self->pointer_cache_entries; i++)
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{
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if (self->pointer_items[i].stamp < oldest)
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{
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oldest = self->pointer_items[i].stamp;
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index = i;
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}
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}
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self->pointer_items[index].x = pointer_item->x;
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self->pointer_items[index].y = pointer_item->y;
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g_memcpy(self->pointer_items[index].data,
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pointer_item->data, 32 * 32 * 3);
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g_memcpy(self->pointer_items[index].mask,
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pointer_item->mask, 32 * 32 / 8);
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self->pointer_items[index].stamp = self->pointer_stamp;
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xrdp_wm_send_pointer(self->wm, index,
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self->pointer_items[index].data,
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self->pointer_items[index].mask,
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self->pointer_items[index].x,
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self->pointer_items[index].y);
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self->wm->current_pointer = index;
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DEBUG(("adding pointer at %d\r\n", index));
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return index;
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}
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/*****************************************************************************/
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int APP_CC
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xrdp_cache_add_pointer_static(struct xrdp_cache* self,
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struct xrdp_pointer_item* pointer_item,
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int index)
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{
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if (self == 0)
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{
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return 0;
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}
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self->pointer_items[index].x = pointer_item->x;
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self->pointer_items[index].y = pointer_item->y;
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g_memcpy(self->pointer_items[index].data,
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pointer_item->data, 32 * 32 * 3);
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g_memcpy(self->pointer_items[index].mask,
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pointer_item->mask, 32 * 32 / 8);
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self->pointer_items[index].stamp = self->pointer_stamp;
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xrdp_wm_send_pointer(self->wm, index,
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self->pointer_items[index].data,
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self->pointer_items[index].mask,
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self->pointer_items[index].x,
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self->pointer_items[index].y);
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self->wm->current_pointer = index;
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DEBUG(("adding pointer at %d\r\n", index));
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return index;
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}
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