jsorg71
19 years ago
parent
fac0e03c03
commit
8c28bc2dec
File diff suppressed because it is too large
Load Diff
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/* -*- c-basic-offset: 8 -*-
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rdesktop: A Remote Desktop Protocol client.
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Cache routines
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Copyright (C) Matthew Chapman 1999-2005
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Copyright (C) Jeroen Meijer 2005
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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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*/
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#include "rdesktop.h"
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/* BITMAP CACHE */
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extern int g_pstcache_fd[];
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#define NUM_ELEMENTS(array) (sizeof(array) / sizeof(array[0]))
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#define IS_PERSISTENT(id) (g_pstcache_fd[id] > 0)
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#define TO_TOP -1
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#define NOT_SET -1
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#define IS_SET(idx) (idx >= 0)
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/*
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* TODO: Test for optimal value of BUMP_COUNT. TO_TOP gives lowest cpu utilisation but using
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* a positive value will hopefully result in less frequently used bitmaps having a greater chance
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* of being evicted from the cache, and therby reducing the need to load bitmaps from disk.
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* (Jeroen)
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*/
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#define BUMP_COUNT 40
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struct bmpcache_entry
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{
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HBITMAP bitmap;
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sint16 previous;
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sint16 next;
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};
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static struct bmpcache_entry g_bmpcache[3][0xa00];
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static HBITMAP g_volatile_bc[3];
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static int g_bmpcache_lru[3] = { NOT_SET, NOT_SET, NOT_SET };
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static int g_bmpcache_mru[3] = { NOT_SET, NOT_SET, NOT_SET };
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static int g_bmpcache_count[3];
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/* Setup the bitmap cache lru/mru linked list */
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void
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cache_rebuild_bmpcache_linked_list(uint8 id, sint16 * idx, int count)
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{
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int n = count, c = 0;
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sint16 n_idx;
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/* find top, skip evicted bitmaps */
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while (--n >= 0 && g_bmpcache[id][idx[n]].bitmap == NULL);
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if (n < 0)
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{
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g_bmpcache_mru[id] = g_bmpcache_lru[id] = NOT_SET;
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return;
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}
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g_bmpcache_mru[id] = idx[n];
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g_bmpcache[id][idx[n]].next = NOT_SET;
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n_idx = idx[n];
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c++;
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/* link list */
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while (n >= 0)
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{
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/* skip evicted bitmaps */
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while (--n >= 0 && g_bmpcache[id][idx[n]].bitmap == NULL);
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if (n < 0)
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break;
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g_bmpcache[id][n_idx].previous = idx[n];
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g_bmpcache[id][idx[n]].next = n_idx;
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n_idx = idx[n];
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c++;
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}
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g_bmpcache[id][n_idx].previous = NOT_SET;
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g_bmpcache_lru[id] = n_idx;
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if (c != g_bmpcache_count[id])
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{
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error("Oops. %d in bitmap cache linked list, %d in ui cache...\n", c,
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g_bmpcache_count[id]);
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exit(1);
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}
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}
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/* Move a bitmap to a new position in the linked list. */
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void
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cache_bump_bitmap(uint8 id, uint16 idx, int bump)
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{
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int p_idx, n_idx, n;
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if (!IS_PERSISTENT(id))
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return;
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if (g_bmpcache_mru[id] == idx)
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return;
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DEBUG_RDP5(("bump bitmap: id=%d, idx=%d, bump=%d\n", id, idx, bump));
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n_idx = g_bmpcache[id][idx].next;
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p_idx = g_bmpcache[id][idx].previous;
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if (IS_SET(n_idx))
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{
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/* remove */
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--g_bmpcache_count[id];
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if (IS_SET(p_idx))
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g_bmpcache[id][p_idx].next = n_idx;
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else
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g_bmpcache_lru[id] = n_idx;
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if (IS_SET(n_idx))
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g_bmpcache[id][n_idx].previous = p_idx;
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else
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g_bmpcache_mru[id] = p_idx;
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}
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else
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{
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p_idx = NOT_SET;
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n_idx = g_bmpcache_lru[id];
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}
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if (bump >= 0)
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{
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for (n = 0; n < bump && IS_SET(n_idx); n++)
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{
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p_idx = n_idx;
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n_idx = g_bmpcache[id][p_idx].next;
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}
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}
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else
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{
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p_idx = g_bmpcache_mru[id];
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n_idx = NOT_SET;
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}
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/* insert */
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++g_bmpcache_count[id];
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g_bmpcache[id][idx].previous = p_idx;
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g_bmpcache[id][idx].next = n_idx;
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if (p_idx >= 0)
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g_bmpcache[id][p_idx].next = idx;
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else
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g_bmpcache_lru[id] = idx;
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if (n_idx >= 0)
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g_bmpcache[id][n_idx].previous = idx;
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else
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g_bmpcache_mru[id] = idx;
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}
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/* Evict the least-recently used bitmap from the cache */
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void
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cache_evict_bitmap(uint8 id)
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{
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uint16 idx;
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int n_idx;
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if (!IS_PERSISTENT(id))
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return;
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idx = g_bmpcache_lru[id];
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n_idx = g_bmpcache[id][idx].next;
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DEBUG_RDP5(("evict bitmap: id=%d idx=%d n_idx=%d bmp=0x%x\n", id, idx, n_idx,
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g_bmpcache[id][idx].bitmap));
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ui_destroy_bitmap(g_bmpcache[id][idx].bitmap);
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--g_bmpcache_count[id];
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g_bmpcache[id][idx].bitmap = 0;
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g_bmpcache_lru[id] = n_idx;
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g_bmpcache[id][n_idx].previous = NOT_SET;
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pstcache_touch_bitmap(id, idx, 0);
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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 id, uint16 idx)
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{
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if ((id < NUM_ELEMENTS(g_bmpcache)) && (idx < NUM_ELEMENTS(g_bmpcache[0])))
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{
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if (g_bmpcache[id][idx].bitmap || pstcache_load_bitmap(id, idx))
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{
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if (IS_PERSISTENT(id))
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cache_bump_bitmap(id, idx, BUMP_COUNT);
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return g_bmpcache[id][idx].bitmap;
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}
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}
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else if ((id < NUM_ELEMENTS(g_volatile_bc)) && (idx == 0x7fff))
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{
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return g_volatile_bc[id];
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}
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error("get bitmap %d:%d\n", id, idx);
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return NULL;
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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 id, uint16 idx, HBITMAP bitmap)
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{
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HBITMAP old;
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if ((id < NUM_ELEMENTS(g_bmpcache)) && (idx < NUM_ELEMENTS(g_bmpcache[0])))
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{
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old = g_bmpcache[id][idx].bitmap;
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if (old != NULL)
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ui_destroy_bitmap(old);
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g_bmpcache[id][idx].bitmap = bitmap;
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if (IS_PERSISTENT(id))
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{
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if (old == NULL)
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g_bmpcache[id][idx].previous = g_bmpcache[id][idx].next = NOT_SET;
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cache_bump_bitmap(id, idx, TO_TOP);
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if (g_bmpcache_count[id] > BMPCACHE2_C2_CELLS)
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cache_evict_bitmap(id);
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}
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}
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else if ((id < NUM_ELEMENTS(g_volatile_bc)) && (idx == 0x7fff))
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{
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old = g_volatile_bc[id];
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if (old != NULL)
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ui_destroy_bitmap(old);
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g_volatile_bc[id] = bitmap;
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}
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else
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{
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error("put bitmap %d:%d\n", id, idx);
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}
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}
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/* Updates the persistent bitmap cache MRU information on exit */
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void
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cache_save_state(void)
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{
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uint32 id = 0, t = 0;
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int idx;
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for (id = 0; id < NUM_ELEMENTS(g_bmpcache); id++)
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if (IS_PERSISTENT(id))
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{
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DEBUG_RDP5(("Saving cache state for bitmap cache %d...", id));
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idx = g_bmpcache_lru[id];
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while (idx >= 0)
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{
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pstcache_touch_bitmap(id, idx, ++t);
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idx = g_bmpcache[id][idx].next;
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}
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DEBUG_RDP5((" %d stamps written.\n", t));
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}
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}
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/* FONT CACHE */
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static FONTGLYPH g_fontcache[12][256];
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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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if ((font < NUM_ELEMENTS(g_fontcache)) && (character < NUM_ELEMENTS(g_fontcache[0])))
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{
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glyph = &g_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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error("get font %d:%d\n", font, character);
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return NULL;
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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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if ((font < NUM_ELEMENTS(g_fontcache)) && (character < NUM_ELEMENTS(g_fontcache[0])))
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{
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glyph = &g_fontcache[font][character];
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if (glyph->pixmap != NULL)
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ui_destroy_glyph(glyph->pixmap);
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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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/* TEXT CACHE */
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static DATABLOB g_textcache[256];
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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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text = &g_textcache[cache_id];
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return text;
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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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text = &g_textcache[cache_id];
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if (text->data != NULL)
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xfree(text->data);
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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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/* DESKTOP CACHE */
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static uint8 g_deskcache[0x38400 * 4];
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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, int bytes_per_pixel)
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{
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int length = cx * cy * bytes_per_pixel;
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if (offset > sizeof(g_deskcache))
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offset = 0;
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if ((offset + length) <= sizeof(g_deskcache))
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{
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return &g_deskcache[offset];
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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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/* 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, int bytes_per_pixel, uint8 * data)
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{
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int length = cx * cy * bytes_per_pixel;
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if (offset > sizeof(g_deskcache))
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offset = 0;
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if ((offset + length) <= sizeof(g_deskcache))
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{
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cx *= bytes_per_pixel;
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while (cy--)
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{
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memcpy(&g_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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/* CURSOR CACHE */
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static HCURSOR g_cursorcache[0x20];
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/* Retrieve cursor from cache */
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HCURSOR
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cache_get_cursor(uint16 cache_idx)
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{
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HCURSOR cursor;
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if (cache_idx < NUM_ELEMENTS(g_cursorcache))
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{
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cursor = g_cursorcache[cache_idx];
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if (cursor != NULL)
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return cursor;
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}
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error("get cursor %d\n", cache_idx);
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return NULL;
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}
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/* Store cursor in cache */
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void
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cache_put_cursor(uint16 cache_idx, HCURSOR cursor)
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{
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HCURSOR old;
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if (cache_idx < NUM_ELEMENTS(g_cursorcache))
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{
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old = g_cursorcache[cache_idx];
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if (old != NULL)
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ui_destroy_cursor(old);
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g_cursorcache[cache_idx] = cursor;
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}
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else
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{
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error("put cursor %d\n", cache_idx);
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}
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}
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@ -0,0 +1,380 @@
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/* -*- c-basic-offset: 8 -*-
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rdesktop: A Remote Desktop Protocol client.
|
||||
Protocol services - RDP decompression
|
||||
Copyright (C) Matthew Chapman 1999-2005
|
||||
|
||||
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.
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*/
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#include <stdio.h>
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#include <string.h>
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#include "rdesktop.h"
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/* mppc decompression */
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/* http://www.faqs.org/rfcs/rfc2118.html */
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/* Contacts: */
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/* hifn contact mentioned in the faq is */
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/* Robert Friend rfriend at hifn dot com */
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/* if you have questions regarding MPPC */
|
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/* our contact is */
|
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/* Guus Dhaeze GDhaeze at hifn dot com */
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/* Licensing: */
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||||
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/* decompression is alright as long as we */
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/* don't compress data */
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/* Algorithm: */
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/* as the rfc states the algorithm seems to */
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/* be LZ77 with a sliding buffer */
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/* that is empty at init. */
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/* the algorithm is called LZS and is */
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/* patented for another couple of years. */
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/* more information is available in */
|
||||
/* http://www.ietf.org/ietf/IPR/hifn-ipr-draft-friend-tls-lzs-compression.txt */
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||||
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||||
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RDPCOMP g_mppc_dict;
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int
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mppc_expand(uint8 * data, uint32 clen, uint8 ctype, uint32 * roff, uint32 * rlen)
|
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{
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int k, walker_len = 0, walker;
|
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uint32 i = 0;
|
||||
int next_offset, match_off;
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int match_len;
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||||
int old_offset, match_bits;
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BOOL big = ctype & RDP_MPPC_BIG ? True : False;
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||||
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||||
uint8 *dict = g_mppc_dict.hist;
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||||
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||||
if ((ctype & RDP_MPPC_COMPRESSED) == 0)
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||||
{
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||||
*roff = 0;
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||||
*rlen = clen;
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return 0;
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||||
}
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||||
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||||
if ((ctype & RDP_MPPC_RESET) != 0)
|
||||
{
|
||||
g_mppc_dict.roff = 0;
|
||||
}
|
||||
|
||||
if ((ctype & RDP_MPPC_FLUSH) != 0)
|
||||
{
|
||||
memset(dict, 0, RDP_MPPC_DICT_SIZE);
|
||||
g_mppc_dict.roff = 0;
|
||||
}
|
||||
|
||||
*roff = 0;
|
||||
*rlen = 0;
|
||||
|
||||
walker = g_mppc_dict.roff;
|
||||
|
||||
next_offset = walker;
|
||||
old_offset = next_offset;
|
||||
*roff = old_offset;
|
||||
if (clen == 0)
|
||||
return 0;
|
||||
clen += i;
|
||||
|
||||
do
|
||||
{
|
||||
if (walker_len == 0)
|
||||
{
|
||||
if (i >= clen)
|
||||
break;
|
||||
walker = data[i++] << 24;
|
||||
walker_len = 8;
|
||||
}
|
||||
if (walker >= 0)
|
||||
{
|
||||
if (walker_len < 8)
|
||||
{
|
||||
if (i >= clen)
|
||||
{
|
||||
if (walker != 0)
|
||||
return -1;
|
||||
break;
|
||||
}
|
||||
walker |= (data[i++] & 0xff) << (24 - walker_len);
|
||||
walker_len += 8;
|
||||
}
|
||||
if (next_offset >= RDP_MPPC_DICT_SIZE)
|
||||
return -1;
|
||||
dict[next_offset++] = (((uint32) walker) >> ((uint32) 24));
|
||||
walker <<= 8;
|
||||
walker_len -= 8;
|
||||
continue;
|
||||
}
|
||||
walker <<= 1;
|
||||
/* fetch next 8-bits */
|
||||
if (--walker_len == 0)
|
||||
{
|
||||
if (i >= clen)
|
||||
return -1;
|
||||
walker = data[i++] << 24;
|
||||
walker_len = 8;
|
||||
}
|
||||
/* literal decoding */
|
||||
if (walker >= 0)
|
||||
{
|
||||
if (walker_len < 8)
|
||||
{
|
||||
if (i >= clen)
|
||||
return -1;
|
||||
walker |= (data[i++] & 0xff) << (24 - walker_len);
|
||||
walker_len += 8;
|
||||
}
|
||||
if (next_offset >= RDP_MPPC_DICT_SIZE)
|
||||
return -1;
|
||||
dict[next_offset++] = (uint8) (walker >> 24 | 0x80);
|
||||
walker <<= 8;
|
||||
walker_len -= 8;
|
||||
continue;
|
||||
}
|
||||
|
||||
/* decode offset */
|
||||
/* length pair */
|
||||
walker <<= 1;
|
||||
if (--walker_len < (big ? 3 : 2))
|
||||
{
|
||||
if (i >= clen)
|
||||
return -1;
|
||||
walker |= (data[i++] & 0xff) << (24 - walker_len);
|
||||
walker_len += 8;
|
||||
}
|
||||
|
||||
if (big)
|
||||
{
|
||||
/* offset decoding where offset len is:
|
||||
-63: 11111 followed by the lower 6 bits of the value
|
||||
64-319: 11110 followed by the lower 8 bits of the value ( value - 64 )
|
||||
320-2367: 1110 followed by lower 11 bits of the value ( value - 320 )
|
||||
2368-65535: 110 followed by lower 16 bits of the value ( value - 2368 )
|
||||
*/
|
||||
switch (((uint32) walker) >> ((uint32) 29))
|
||||
{
|
||||
case 7: /* - 63 */
|
||||
for (; walker_len < 9; walker_len += 8)
|
||||
{
|
||||
if (i >= clen)
|
||||
return -1;
|
||||
walker |= (data[i++] & 0xff) << (24 - walker_len);
|
||||
}
|
||||
walker <<= 3;
|
||||
match_off = ((uint32) walker) >> ((uint32) 26);
|
||||
walker <<= 6;
|
||||
walker_len -= 9;
|
||||
break;
|
||||
|
||||
case 6: /* 64 - 319 */
|
||||
for (; walker_len < 11; walker_len += 8)
|
||||
{
|
||||
if (i >= clen)
|
||||
return -1;
|
||||
walker |= (data[i++] & 0xff) << (24 - walker_len);
|
||||
}
|
||||
|
||||
walker <<= 3;
|
||||
match_off = (((uint32) walker) >> ((uint32) 24)) + 64;
|
||||
walker <<= 8;
|
||||
walker_len -= 11;
|
||||
break;
|
||||
|
||||
case 5:
|
||||
case 4: /* 320 - 2367 */
|
||||
for (; walker_len < 13; walker_len += 8)
|
||||
{
|
||||
if (i >= clen)
|
||||
return -1;
|
||||
walker |= (data[i++] & 0xff) << (24 - walker_len);
|
||||
}
|
||||
|
||||
walker <<= 2;
|
||||
match_off = (((uint32) walker) >> ((uint32) 21)) + 320;
|
||||
walker <<= 11;
|
||||
walker_len -= 13;
|
||||
break;
|
||||
|
||||
default: /* 2368 - 65535 */
|
||||
for (; walker_len < 17; walker_len += 8)
|
||||
{
|
||||
if (i >= clen)
|
||||
return -1;
|
||||
walker |= (data[i++] & 0xff) << (24 - walker_len);
|
||||
}
|
||||
|
||||
walker <<= 1;
|
||||
match_off = (((uint32) walker) >> ((uint32) 16)) + 2368;
|
||||
walker <<= 16;
|
||||
walker_len -= 17;
|
||||
break;
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
/* offset decoding where offset len is:
|
||||
-63: 1111 followed by the lower 6 bits of the value
|
||||
64-319: 1110 followed by the lower 8 bits of the value ( value - 64 )
|
||||
320-8191: 110 followed by the lower 13 bits of the value ( value - 320 )
|
||||
*/
|
||||
switch (((uint32) walker) >> ((uint32) 30))
|
||||
{
|
||||
case 3: /* - 63 */
|
||||
if (walker_len < 8)
|
||||
{
|
||||
if (i >= clen)
|
||||
return -1;
|
||||
walker |= (data[i++] & 0xff) << (24 - walker_len);
|
||||
walker_len += 8;
|
||||
}
|
||||
walker <<= 2;
|
||||
match_off = ((uint32) walker) >> ((uint32) 26);
|
||||
walker <<= 6;
|
||||
walker_len -= 8;
|
||||
break;
|
||||
|
||||
case 2: /* 64 - 319 */
|
||||
for (; walker_len < 10; walker_len += 8)
|
||||
{
|
||||
if (i >= clen)
|
||||
return -1;
|
||||
walker |= (data[i++] & 0xff) << (24 - walker_len);
|
||||
}
|
||||
|
||||
walker <<= 2;
|
||||
match_off = (((uint32) walker) >> ((uint32) 24)) + 64;
|
||||
walker <<= 8;
|
||||
walker_len -= 10;
|
||||
break;
|
||||
|
||||
default: /* 320 - 8191 */
|
||||
for (; walker_len < 14; walker_len += 8)
|
||||
{
|
||||
if (i >= clen)
|
||||
return -1;
|
||||
walker |= (data[i++] & 0xff) << (24 - walker_len);
|
||||
}
|
||||
|
||||
match_off = (walker >> 18) + 320;
|
||||
walker <<= 14;
|
||||
walker_len -= 14;
|
||||
break;
|
||||
}
|
||||
}
|
||||
if (walker_len == 0)
|
||||
{
|
||||
if (i >= clen)
|
||||
return -1;
|
||||
walker = data[i++] << 24;
|
||||
walker_len = 8;
|
||||
}
|
||||
|
||||
/* decode length of match */
|
||||
match_len = 0;
|
||||
if (walker >= 0)
|
||||
{ /* special case - length of 3 is in bit 0 */
|
||||
match_len = 3;
|
||||
walker <<= 1;
|
||||
walker_len--;
|
||||
}
|
||||
else
|
||||
{
|
||||
/* this is how it works len of:
|
||||
4-7: 10 followed by 2 bits of the value
|
||||
8-15: 110 followed by 3 bits of the value
|
||||
16-31: 1110 followed by 4 bits of the value
|
||||
32-63: .... and so forth
|
||||
64-127:
|
||||
128-255:
|
||||
256-511:
|
||||
512-1023:
|
||||
1024-2047:
|
||||
2048-4095:
|
||||
4096-8191:
|
||||
|
||||
i.e. 4097 is encoded as: 111111111110 000000000001
|
||||
meaning 4096 + 1...
|
||||
*/
|
||||
match_bits = big ? 14 : 11; /* 11 or 14 bits of value at most */
|
||||
do
|
||||
{
|
||||
walker <<= 1;
|
||||
if (--walker_len == 0)
|
||||
{
|
||||
if (i >= clen)
|
||||
return -1;
|
||||
walker = data[i++] << 24;
|
||||
walker_len = 8;
|
||||
}
|
||||
if (walker >= 0)
|
||||
break;
|
||||
if (--match_bits == 0)
|
||||
{
|
||||
return -1;
|
||||
}
|
||||
}
|
||||
while (1);
|
||||
match_len = (big ? 16 : 13) - match_bits;
|
||||
walker <<= 1;
|
||||
if (--walker_len < match_len)
|
||||
{
|
||||
for (; walker_len < match_len; walker_len += 8)
|
||||
{
|
||||
if (i >= clen)
|
||||
{
|
||||
return -1;
|
||||
}
|
||||
walker |= (data[i++] & 0xff) << (24 - walker_len);
|
||||
}
|
||||
}
|
||||
|
||||
match_bits = match_len;
|
||||
match_len =
|
||||
((walker >> (32 - match_bits)) & (~(-1 << match_bits))) | (1 <<
|
||||
match_bits);
|
||||
walker <<= match_bits;
|
||||
walker_len -= match_bits;
|
||||
}
|
||||
if (next_offset + match_len >= RDP_MPPC_DICT_SIZE)
|
||||
{
|
||||
return -1;
|
||||
}
|
||||
/* memory areas can overlap - meaning we can't use memXXX functions */
|
||||
k = (next_offset - match_off) & (big ? 65535 : 8191);
|
||||
do
|
||||
{
|
||||
dict[next_offset++] = dict[k++];
|
||||
}
|
||||
while (--match_len != 0);
|
||||
}
|
||||
while (1);
|
||||
|
||||
/* store history offset */
|
||||
g_mppc_dict.roff = next_offset;
|
||||
|
||||
*roff = old_offset;
|
||||
*rlen = next_offset - old_offset;
|
||||
|
||||
return 0;
|
||||
}
|
||||
File diff suppressed because it is too large
Load Diff
@ -0,0 +1,368 @@
|
||||
/*
|
||||
rdesktop: A Remote Desktop Protocol client.
|
||||
RDP order processing
|
||||
Copyright (C) Matthew Chapman 1999-2005
|
||||
|
||||
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.
|
||||
*/
|
||||
|
||||
#define RDP_ORDER_STANDARD 0x01
|
||||
#define RDP_ORDER_SECONDARY 0x02
|
||||
#define RDP_ORDER_BOUNDS 0x04
|
||||
#define RDP_ORDER_CHANGE 0x08
|
||||
#define RDP_ORDER_DELTA 0x10
|
||||
#define RDP_ORDER_LASTBOUNDS 0x20
|
||||
#define RDP_ORDER_SMALL 0x40
|
||||
#define RDP_ORDER_TINY 0x80
|
||||
|
||||
enum RDP_ORDER_TYPE
|
||||
{
|
||||
RDP_ORDER_DESTBLT = 0,
|
||||
RDP_ORDER_PATBLT = 1,
|
||||
RDP_ORDER_SCREENBLT = 2,
|
||||
RDP_ORDER_LINE = 9,
|
||||
RDP_ORDER_RECT = 10,
|
||||
RDP_ORDER_DESKSAVE = 11,
|
||||
RDP_ORDER_MEMBLT = 13,
|
||||
RDP_ORDER_TRIBLT = 14,
|
||||
RDP_ORDER_POLYGON = 20,
|
||||
RDP_ORDER_POLYGON2 = 21,
|
||||
RDP_ORDER_POLYLINE = 22,
|
||||
RDP_ORDER_ELLIPSE = 25,
|
||||
RDP_ORDER_ELLIPSE2 = 26,
|
||||
RDP_ORDER_TEXT2 = 27
|
||||
};
|
||||
|
||||
enum RDP_SECONDARY_ORDER_TYPE
|
||||
{
|
||||
RDP_ORDER_RAW_BMPCACHE = 0,
|
||||
RDP_ORDER_COLCACHE = 1,
|
||||
RDP_ORDER_BMPCACHE = 2,
|
||||
RDP_ORDER_FONTCACHE = 3,
|
||||
RDP_ORDER_RAW_BMPCACHE2 = 4,
|
||||
RDP_ORDER_BMPCACHE2 = 5,
|
||||
RDP_ORDER_BRUSHCACHE = 7
|
||||
};
|
||||
|
||||
typedef struct _DESTBLT_ORDER
|
||||
{
|
||||
sint16 x;
|
||||
sint16 y;
|
||||
sint16 cx;
|
||||
sint16 cy;
|
||||
uint8 opcode;
|
||||
|
||||
}
|
||||
DESTBLT_ORDER;
|
||||
|
||||
typedef struct _PATBLT_ORDER
|
||||
{
|
||||
sint16 x;
|
||||
sint16 y;
|
||||
sint16 cx;
|
||||
sint16 cy;
|
||||
uint8 opcode;
|
||||
uint32 bgcolour;
|
||||
uint32 fgcolour;
|
||||
BRUSH brush;
|
||||
|
||||
}
|
||||
PATBLT_ORDER;
|
||||
|
||||
typedef struct _SCREENBLT_ORDER
|
||||
{
|
||||
sint16 x;
|
||||
sint16 y;
|
||||
sint16 cx;
|
||||
sint16 cy;
|
||||
uint8 opcode;
|
||||
sint16 srcx;
|
||||
sint16 srcy;
|
||||
|
||||
}
|
||||
SCREENBLT_ORDER;
|
||||
|
||||
typedef struct _LINE_ORDER
|
||||
{
|
||||
uint16 mixmode;
|
||||
sint16 startx;
|
||||
sint16 starty;
|
||||
sint16 endx;
|
||||
sint16 endy;
|
||||
uint32 bgcolour;
|
||||
uint8 opcode;
|
||||
PEN pen;
|
||||
|
||||
}
|
||||
LINE_ORDER;
|
||||
|
||||
typedef struct _RECT_ORDER
|
||||
{
|
||||
sint16 x;
|
||||
sint16 y;
|
||||
sint16 cx;
|
||||
sint16 cy;
|
||||
uint32 colour;
|
||||
|
||||
}
|
||||
RECT_ORDER;
|
||||
|
||||
typedef struct _DESKSAVE_ORDER
|
||||
{
|
||||
uint32 offset;
|
||||
sint16 left;
|
||||
sint16 top;
|
||||
sint16 right;
|
||||
sint16 bottom;
|
||||
uint8 action;
|
||||
|
||||
}
|
||||
DESKSAVE_ORDER;
|
||||
|
||||
typedef struct _TRIBLT_ORDER
|
||||
{
|
||||
uint8 colour_table;
|
||||
uint8 cache_id;
|
||||
sint16 x;
|
||||
sint16 y;
|
||||
sint16 cx;
|
||||
sint16 cy;
|
||||
uint8 opcode;
|
||||
sint16 srcx;
|
||||
sint16 srcy;
|
||||
uint32 bgcolour;
|
||||
uint32 fgcolour;
|
||||
BRUSH brush;
|
||||
uint16 cache_idx;
|
||||
uint16 unknown;
|
||||
|
||||
}
|
||||
TRIBLT_ORDER;
|
||||
|
||||
typedef struct _MEMBLT_ORDER
|
||||
{
|
||||
uint8 colour_table;
|
||||
uint8 cache_id;
|
||||
sint16 x;
|
||||
sint16 y;
|
||||
sint16 cx;
|
||||
sint16 cy;
|
||||
uint8 opcode;
|
||||
sint16 srcx;
|
||||
sint16 srcy;
|
||||
uint16 cache_idx;
|
||||
|
||||
}
|
||||
MEMBLT_ORDER;
|
||||
|
||||
#define MAX_DATA 256
|
||||
|
||||
typedef struct _POLYGON_ORDER
|
||||
{
|
||||
sint16 x;
|
||||
sint16 y;
|
||||
uint8 opcode;
|
||||
uint8 fillmode;
|
||||
uint32 fgcolour;
|
||||
uint8 npoints;
|
||||
uint8 datasize;
|
||||
uint8 data[MAX_DATA];
|
||||
|
||||
}
|
||||
POLYGON_ORDER;
|
||||
|
||||
typedef struct _POLYGON2_ORDER
|
||||
{
|
||||
sint16 x;
|
||||
sint16 y;
|
||||
uint8 opcode;
|
||||
uint8 fillmode;
|
||||
uint32 bgcolour;
|
||||
uint32 fgcolour;
|
||||
BRUSH brush;
|
||||
uint8 npoints;
|
||||
uint8 datasize;
|
||||
uint8 data[MAX_DATA];
|
||||
|
||||
}
|
||||
POLYGON2_ORDER;
|
||||
|
||||
typedef struct _POLYLINE_ORDER
|
||||
{
|
||||
sint16 x;
|
||||
sint16 y;
|
||||
uint8 opcode;
|
||||
uint32 fgcolour;
|
||||
uint8 lines;
|
||||
uint8 datasize;
|
||||
uint8 data[MAX_DATA];
|
||||
|
||||
}
|
||||
POLYLINE_ORDER;
|
||||
|
||||
typedef struct _ELLIPSE_ORDER
|
||||
{
|
||||
sint16 left;
|
||||
sint16 top;
|
||||
sint16 right;
|
||||
sint16 bottom;
|
||||
uint8 opcode;
|
||||
uint8 fillmode;
|
||||
uint32 fgcolour;
|
||||
|
||||
}
|
||||
ELLIPSE_ORDER;
|
||||
|
||||
typedef struct _ELLIPSE2_ORDER
|
||||
{
|
||||
sint16 left;
|
||||
sint16 top;
|
||||
sint16 right;
|
||||
sint16 bottom;
|
||||
uint8 opcode;
|
||||
uint8 fillmode;
|
||||
BRUSH brush;
|
||||
uint32 bgcolour;
|
||||
uint32 fgcolour;
|
||||
|
||||
}
|
||||
ELLIPSE2_ORDER;
|
||||
|
||||
#define MAX_TEXT 256
|
||||
|
||||
typedef struct _TEXT2_ORDER
|
||||
{
|
||||
uint8 font;
|
||||
uint8 flags;
|
||||
uint8 opcode;
|
||||
uint8 mixmode;
|
||||
uint32 bgcolour;
|
||||
uint32 fgcolour;
|
||||
sint16 clipleft;
|
||||
sint16 cliptop;
|
||||
sint16 clipright;
|
||||
sint16 clipbottom;
|
||||
sint16 boxleft;
|
||||
sint16 boxtop;
|
||||
sint16 boxright;
|
||||
sint16 boxbottom;
|
||||
BRUSH brush;
|
||||
sint16 x;
|
||||
sint16 y;
|
||||
uint8 length;
|
||||
uint8 text[MAX_TEXT];
|
||||
|
||||
}
|
||||
TEXT2_ORDER;
|
||||
|
||||
typedef struct _RDP_ORDER_STATE
|
||||
{
|
||||
uint8 order_type;
|
||||
BOUNDS bounds;
|
||||
|
||||
DESTBLT_ORDER destblt;
|
||||
PATBLT_ORDER patblt;
|
||||
SCREENBLT_ORDER screenblt;
|
||||
LINE_ORDER line;
|
||||
RECT_ORDER rect;
|
||||
DESKSAVE_ORDER desksave;
|
||||
MEMBLT_ORDER memblt;
|
||||
TRIBLT_ORDER triblt;
|
||||
POLYGON_ORDER polygon;
|
||||
POLYGON2_ORDER polygon2;
|
||||
POLYLINE_ORDER polyline;
|
||||
ELLIPSE_ORDER ellipse;
|
||||
ELLIPSE2_ORDER ellipse2;
|
||||
TEXT2_ORDER text2;
|
||||
|
||||
}
|
||||
RDP_ORDER_STATE;
|
||||
|
||||
typedef struct _RDP_RAW_BMPCACHE_ORDER
|
||||
{
|
||||
uint8 cache_id;
|
||||
uint8 pad1;
|
||||
uint8 width;
|
||||
uint8 height;
|
||||
uint8 bpp;
|
||||
uint16 bufsize;
|
||||
uint16 cache_idx;
|
||||
uint8 *data;
|
||||
|
||||
}
|
||||
RDP_RAW_BMPCACHE_ORDER;
|
||||
|
||||
typedef struct _RDP_BMPCACHE_ORDER
|
||||
{
|
||||
uint8 cache_id;
|
||||
uint8 pad1;
|
||||
uint8 width;
|
||||
uint8 height;
|
||||
uint8 bpp;
|
||||
uint16 bufsize;
|
||||
uint16 cache_idx;
|
||||
uint16 pad2;
|
||||
uint16 size;
|
||||
uint16 row_size;
|
||||
uint16 final_size;
|
||||
uint8 *data;
|
||||
|
||||
}
|
||||
RDP_BMPCACHE_ORDER;
|
||||
|
||||
/* RDP_BMPCACHE2_ORDER */
|
||||
#define ID_MASK 0x0007
|
||||
#define MODE_MASK 0x0038
|
||||
#define SQUARE 0x0080
|
||||
#define PERSIST 0x0100
|
||||
#define FLAG_51_UNKNOWN 0x0800
|
||||
|
||||
#define MODE_SHIFT 3
|
||||
|
||||
#define LONG_FORMAT 0x80
|
||||
#define BUFSIZE_MASK 0x3FFF /* or 0x1FFF? */
|
||||
|
||||
#define MAX_GLYPH 32
|
||||
|
||||
typedef struct _RDP_FONT_GLYPH
|
||||
{
|
||||
uint16 character;
|
||||
uint16 unknown;
|
||||
uint16 baseline;
|
||||
uint16 width;
|
||||
uint16 height;
|
||||
uint8 data[MAX_GLYPH];
|
||||
|
||||
}
|
||||
RDP_FONT_GLYPH;
|
||||
|
||||
#define MAX_GLYPHS 256
|
||||
|
||||
typedef struct _RDP_FONTCACHE_ORDER
|
||||
{
|
||||
uint8 font;
|
||||
uint8 nglyphs;
|
||||
RDP_FONT_GLYPH glyphs[MAX_GLYPHS];
|
||||
|
||||
}
|
||||
RDP_FONTCACHE_ORDER;
|
||||
|
||||
typedef struct _RDP_COLCACHE_ORDER
|
||||
{
|
||||
uint8 cache_id;
|
||||
COLOURMAP map;
|
||||
|
||||
}
|
||||
RDP_COLCACHE_ORDER;
|
||||
@ -0,0 +1,200 @@
|
||||
/* -*- c-basic-offset: 8 -*-
|
||||
rdesktop: A Remote Desktop Protocol client.
|
||||
Persistent Bitmap Cache routines
|
||||
Copyright (C) Jeroen Meijer 2004-2005
|
||||
|
||||
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 MAX_CELL_SIZE 0x1000 /* pixels */
|
||||
|
||||
#define IS_PERSISTENT(id) (id < 8 && g_pstcache_fd[id] > 0)
|
||||
|
||||
extern int g_server_depth;
|
||||
extern BOOL g_bitmap_cache;
|
||||
extern BOOL g_bitmap_cache_persist_enable;
|
||||
extern BOOL g_bitmap_cache_precache;
|
||||
|
||||
int g_pstcache_fd[8];
|
||||
int g_pstcache_Bpp;
|
||||
BOOL g_pstcache_enumerated = False;
|
||||
uint8 zero_key[] = { 0, 0, 0, 0, 0, 0, 0, 0 };
|
||||
|
||||
|
||||
/* Update mru stamp/index for a bitmap */
|
||||
void
|
||||
pstcache_touch_bitmap(uint8 cache_id, uint16 cache_idx, uint32 stamp)
|
||||
{
|
||||
int fd;
|
||||
|
||||
if (!IS_PERSISTENT(cache_id) || cache_idx >= BMPCACHE2_NUM_PSTCELLS)
|
||||
return;
|
||||
|
||||
fd = g_pstcache_fd[cache_id];
|
||||
rd_lseek_file(fd, 12 + cache_idx * (g_pstcache_Bpp * MAX_CELL_SIZE + sizeof(CELLHEADER)));
|
||||
rd_write_file(fd, &stamp, sizeof(stamp));
|
||||
}
|
||||
|
||||
/* Load a bitmap from the persistent cache */
|
||||
BOOL
|
||||
pstcache_load_bitmap(uint8 cache_id, uint16 cache_idx)
|
||||
{
|
||||
uint8 *celldata;
|
||||
int fd;
|
||||
CELLHEADER cellhdr;
|
||||
HBITMAP bitmap;
|
||||
|
||||
if (!g_bitmap_cache_persist_enable)
|
||||
return False;
|
||||
|
||||
if (!IS_PERSISTENT(cache_id) || cache_idx >= BMPCACHE2_NUM_PSTCELLS)
|
||||
return False;
|
||||
|
||||
fd = g_pstcache_fd[cache_id];
|
||||
rd_lseek_file(fd, cache_idx * (g_pstcache_Bpp * MAX_CELL_SIZE + sizeof(CELLHEADER)));
|
||||
rd_read_file(fd, &cellhdr, sizeof(CELLHEADER));
|
||||
celldata = (uint8 *) xmalloc(cellhdr.length);
|
||||
rd_read_file(fd, celldata, cellhdr.length);
|
||||
|
||||
bitmap = ui_create_bitmap(cellhdr.width, cellhdr.height, celldata);
|
||||
DEBUG(("Load bitmap from disk: id=%d, idx=%d, bmp=0x%x)\n", cache_id, cache_idx, bitmap));
|
||||
cache_put_bitmap(cache_id, cache_idx, bitmap);
|
||||
|
||||
xfree(celldata);
|
||||
return True;
|
||||
}
|
||||
|
||||
/* Store a bitmap in the persistent cache */
|
||||
BOOL
|
||||
pstcache_save_bitmap(uint8 cache_id, uint16 cache_idx, uint8 * key,
|
||||
uint8 width, uint8 height, uint16 length, uint8 * data)
|
||||
{
|
||||
int fd;
|
||||
CELLHEADER cellhdr;
|
||||
|
||||
if (!IS_PERSISTENT(cache_id) || cache_idx >= BMPCACHE2_NUM_PSTCELLS)
|
||||
return False;
|
||||
|
||||
memcpy(cellhdr.key, key, sizeof(HASH_KEY));
|
||||
cellhdr.width = width;
|
||||
cellhdr.height = height;
|
||||
cellhdr.length = length;
|
||||
cellhdr.stamp = 0;
|
||||
|
||||
fd = g_pstcache_fd[cache_id];
|
||||
rd_lseek_file(fd, cache_idx * (g_pstcache_Bpp * MAX_CELL_SIZE + sizeof(CELLHEADER)));
|
||||
rd_write_file(fd, &cellhdr, sizeof(CELLHEADER));
|
||||
rd_write_file(fd, data, length);
|
||||
|
||||
return True;
|
||||
}
|
||||
|
||||
/* List the bitmap keys from the persistent cache file */
|
||||
int
|
||||
pstcache_enumerate(uint8 id, HASH_KEY * keylist)
|
||||
{
|
||||
int fd, n;
|
||||
uint16 idx;
|
||||
sint16 mru_idx[0xa00];
|
||||
uint32 mru_stamp[0xa00];
|
||||
CELLHEADER cellhdr;
|
||||
|
||||
if (!(g_bitmap_cache && g_bitmap_cache_persist_enable && IS_PERSISTENT(id)))
|
||||
return 0;
|
||||
|
||||
/* The server disconnects if the bitmap cache content is sent more than once */
|
||||
if (g_pstcache_enumerated)
|
||||
return 0;
|
||||
|
||||
DEBUG_RDP5(("Persistent bitmap cache enumeration... "));
|
||||
for (idx = 0; idx < BMPCACHE2_NUM_PSTCELLS; idx++)
|
||||
{
|
||||
fd = g_pstcache_fd[id];
|
||||
rd_lseek_file(fd, idx * (g_pstcache_Bpp * MAX_CELL_SIZE + sizeof(CELLHEADER)));
|
||||
if (rd_read_file(fd, &cellhdr, sizeof(CELLHEADER)) <= 0)
|
||||
break;
|
||||
|
||||
if (memcmp(cellhdr.key, zero_key, sizeof(HASH_KEY)) != 0)
|
||||
{
|
||||
memcpy(keylist[idx], cellhdr.key, sizeof(HASH_KEY));
|
||||
|
||||
/* Pre-cache (not possible for 8 bit colour depth cause it needs a colourmap) */
|
||||
if (g_bitmap_cache_precache && cellhdr.stamp && g_server_depth > 8)
|
||||
pstcache_load_bitmap(id, idx);
|
||||
|
||||
/* Sort by stamp */
|
||||
for (n = idx; n > 0 && cellhdr.stamp < mru_stamp[n - 1]; n--)
|
||||
{
|
||||
mru_idx[n] = mru_idx[n - 1];
|
||||
mru_stamp[n] = mru_stamp[n - 1];
|
||||
}
|
||||
|
||||
mru_idx[n] = idx;
|
||||
mru_stamp[n] = cellhdr.stamp;
|
||||
}
|
||||
else
|
||||
{
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
DEBUG_RDP5(("%d cached bitmaps.\n", idx));
|
||||
|
||||
cache_rebuild_bmpcache_linked_list(id, mru_idx, idx);
|
||||
g_pstcache_enumerated = True;
|
||||
return idx;
|
||||
}
|
||||
|
||||
/* initialise the persistent bitmap cache */
|
||||
BOOL
|
||||
pstcache_init(uint8 cache_id)
|
||||
{
|
||||
int fd;
|
||||
char filename[256];
|
||||
|
||||
if (g_pstcache_enumerated)
|
||||
return True;
|
||||
|
||||
g_pstcache_fd[cache_id] = 0;
|
||||
|
||||
if (!(g_bitmap_cache && g_bitmap_cache_persist_enable))
|
||||
return False;
|
||||
|
||||
if (!rd_pstcache_mkdir())
|
||||
{
|
||||
DEBUG(("failed to get/make cache directory!\n"));
|
||||
return False;
|
||||
}
|
||||
|
||||
g_pstcache_Bpp = (g_server_depth + 7) / 8;
|
||||
sprintf(filename, "cache/pstcache_%d_%d", cache_id, g_pstcache_Bpp);
|
||||
DEBUG(("persistent bitmap cache file: %s\n", filename));
|
||||
|
||||
fd = rd_open_file(filename);
|
||||
if (fd == -1)
|
||||
return False;
|
||||
|
||||
if (!rd_lock_file(fd, 0, 0))
|
||||
{
|
||||
warning("Persistent bitmap caching is disabled. (The file is already in use)\n");
|
||||
rd_close_file(fd);
|
||||
return False;
|
||||
}
|
||||
|
||||
g_pstcache_fd[cache_id] = fd;
|
||||
return True;
|
||||
}
|
||||
Loading…
Reference in new issue