1 files changed, 145 insertions, 0 deletions
diff --git a/xrdp/xrdp_cache.c b/xrdp/xrdp_cache.c
new file mode 100644
index 00000000..a62ae6f2
--- /dev/null
+++ b/xrdp/xrdp_cache.c
@@ -0,0 +1,145 @@
+
+/*
+   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.
+
+   Copyright (C) Jay Sorg 2004
+
+   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);
+  g_free(self);
+}
+
+/*****************************************************************************/
+/* returns cache id */
+int xrdp_cache_add_bitmap(struct xrdp_cache* self, struct xrdp_bitmap* bitmap)
+{
+  int i;
+  int j;
+  int min_use;
+  int min_use_index1;
+  int min_use_index2;
+  struct xrdp_bitmap* b;
+
+  /* look for match */
+  for (i = 0; i < 3; i++)
+  {
+    for (j = 0; j < 600; j++)
+    {
+      if (xrdp_bitmap_compare(self->bitmap_items[i][j].bitmap, bitmap))
+      {
+        self->bitmap_items[i][j].use_count++;
+        DEBUG(("found bitmap at %d %d\n", i, j));
+        return (i << 16) | j;
+      }
+    }
+  }
+  /* look for least used */
+  min_use_index1 = 0;
+  min_use_index2 = 0;
+  min_use = 999999;
+  for (i = 0; i < 3; i++)
+  {
+    for (j = 0; j < 600; j++)
+    {
+      if (self->bitmap_items[i][j].use_count < min_use)
+      {
+        min_use = self->bitmap_items[i][j].use_count;
+        min_use_index1 = i;
+        min_use_index2 = j;
+      }
+    }
+  }
+  DEBUG(("adding bitmap at %d %d\n", min_use_index1, min_use_index2));
+  /* set, send bitmap and return */
+  xrdp_bitmap_delete(self->bitmap_items[min_use_index1]
+                                       [min_use_index2].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[min_use_index1][min_use_index2].bitmap = b;
+  self->bitmap_items[min_use_index1][min_use_index2].use_count++;
+  xrdp_orders_send_raw_bitmap(self->orders, b, min_use_index1,
+                              min_use_index2);
+  return (min_use_index1 << 16) | min_use_index2;
+}
+
+/*****************************************************************************/
+int xrdp_cache_add_palette(struct xrdp_cache* self, int* palette)
+{
+  int i;
+  int min_use;
+  int min_use_index;
+
+  if (self == 0)
+    return 0;
+  if (palette == 0)
+    return 0;
+  if (self->wm->screen->bpp > 8)
+    return 0;
+  /* 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].use_count++;
+      return i;
+    }
+  }
+  /* look for least used */
+  min_use_index = 0;
+  min_use = 999999;
+  for (i = 0; i < 6; i++)
+  {
+    if (self->palette_items[i].use_count < min_use)
+    {
+      min_use = self->palette_items[i].use_count;
+      min_use_index = i;
+    }
+  }
+  /* set, send palette and return */
+  g_memcpy(self->palette_items[min_use_index].palette, palette,
+           256 * sizeof(int));
+  self->palette_items[min_use_index].use_count++;
+  xrdp_orders_send_palette(self->orders, palette, min_use_index);
+  return min_use_index;
+}