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/*
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.
xrdp: A Remote Desktop Protocol server.
Copyright (C) Jay Sorg 2004-2005
cache
*/
#include "xrdp.h"
/*****************************************************************************/
struct xrdp_cache* xrdp_cache_create(struct xrdp_wm* owner,
struct xrdp_orders* orders)
{
struct xrdp_cache* self;
self = (struct xrdp_cache*)g_malloc(sizeof(struct xrdp_cache), 1);
self->wm = owner;
self->orders = orders;
return self;
}
/*****************************************************************************/
void xrdp_cache_delete(struct xrdp_cache* self)
{
int i;
int j;
if (self == 0)
return;
/* free all the cached bitmaps */
for (i = 0; i < 3; i++)
for (j = 0; j < 600; j++)
xrdp_bitmap_delete(self->bitmap_items[i][j].bitmap);
/* free all the cached font items */
for (i = 0; i < 12; i++)
for (j = 0; j < 256; j++)
g_free(self->char_items[i][j].font_item.data);
g_free(self);
}
/*****************************************************************************/
/* returns cache id */
int xrdp_cache_add_bitmap(struct xrdp_cache* self, struct xrdp_bitmap* bitmap)
{
int i;
int j;
int oldest;
int cache_id;
int cache_idx;
struct xrdp_bitmap* b;
self->bitmap_stamp++;
/* look for match */
for (i = 0; i < 3; i++)
{
for (j = 0; j < 600; j++)
//for (j = 0; (i == 0 && j < 600) || (i == 1 && j < 300); j++)
{
if (xrdp_bitmap_compare(self->bitmap_items[i][j].bitmap, bitmap))
{
self->bitmap_items[i][j].stamp = self->bitmap_stamp;
DEBUG(("found bitmap at %d %d\n\r", i, j));
return MAKELONG(i, j);
}
}
}
/* look for oldest */
cache_id = 0;
cache_idx = 0;
oldest = 0x7fffffff;
for (i = 0; i < 3; i++)
{
for (j = 0; j < 600; j++)
//for (j = 0; (i == 0 && j < 600) || (i == 1 && j < 300); j++)
{
if (self->bitmap_items[i][j].stamp < oldest)
{
oldest = self->bitmap_items[i][j].stamp;
cache_id = i;
cache_idx = j;
}
}
}
DEBUG(("adding bitmap at %d %d\n\r", cache_id, cache_idx));
/* set, send bitmap and return */
xrdp_bitmap_delete(self->bitmap_items[cache_id][cache_idx].bitmap);
b = xrdp_bitmap_create(bitmap->width, bitmap->height, bitmap->bpp, 0);
xrdp_bitmap_copy_box(bitmap, b, 0, 0, bitmap->width, bitmap->height);
self->bitmap_items[cache_id][cache_idx].bitmap = b;
self->bitmap_items[cache_id][cache_idx].stamp = self->bitmap_stamp;
xrdp_orders_send_raw_bitmap(self->orders, b, cache_id, cache_idx);
return MAKELONG(cache_id, cache_idx);
}
/*****************************************************************************/
int xrdp_cache_add_palette(struct xrdp_cache* self, int* palette)
{
int i;
int oldest;
int index;
if (self == 0)
return 0;
if (palette == 0)
return 0;
if (self->wm->screen->bpp > 8)
return 0;
self->palette_stamp++;
/* look for match */
for (i = 0; i < 6; i++)
{
if (g_memcmp(palette, self->palette_items[i].palette,
256 * sizeof(int)) == 0)
{
self->palette_items[i].stamp = self->palette_stamp;
return i;
}
}
/* look for oldest */
index = 0;
oldest = 0x7fffffff;
for (i = 0; i < 6; i++)
{
if (self->palette_items[i].stamp < oldest)
{
oldest = self->palette_items[i].stamp;
index = i;
}
}
/* set, send palette and return */
g_memcpy(self->palette_items[index].palette, palette, 256 * sizeof(int));
self->palette_items[index].stamp = self->palette_stamp;
xrdp_orders_send_palette(self->orders, palette, index);
return index;
}
/*****************************************************************************/
int xrdp_cache_add_char(struct xrdp_cache* self,
struct xrdp_font_item* font_item)
{
int i;
int j;
int oldest;
int f;
int c;
int datasize;
struct xrdp_font_item* fi;
self->char_stamp++;
/* look for match */
for (i = 7; i < 12; i++)
{
for (j = 0; j < 250; j++)
{
if (xrdp_font_item_compare(&self->char_items[i][j].font_item, font_item))
{
self->char_items[i][j].stamp = self->char_stamp;
DEBUG(("found font at %d %d\n\r", i, j));
return MAKELONG(i, j);
}
}
}
/* look for oldest */
f = 0;
c = 0;
oldest = 0x7fffffff;
for (i = 7; i < 12; i++)
{
for (j = 0; j < 250; j++)
{
if (self->char_items[i][j].stamp < oldest)
{
oldest = self->char_items[i][j].stamp;
f = i;
c = j;
}
}
}
DEBUG(("adding char at %d %d\n\r", f, c));
/* set, send char and return */
fi = &self->char_items[f][c].font_item;
g_free(fi->data);
datasize = FONT_DATASIZE(font_item);
fi->data = (char*)g_malloc(datasize, 1);
g_memcpy(fi->data, font_item->data, datasize);
fi->offset = font_item->offset;
fi->baseline = font_item->baseline;
fi->width = font_item->width;
fi->height = font_item->height;
self->char_items[f][c].stamp = self->char_stamp;
xrdp_orders_send_font(self->orders, fi, f, c);
return MAKELONG(f, c);
}
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