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Diffstat (limited to 'uirdesktop/pstcache.c')
| -rw-r--r-- | uirdesktop/pstcache.c | 200 |
1 files changed, 0 insertions, 200 deletions
diff --git a/uirdesktop/pstcache.c b/uirdesktop/pstcache.c deleted file mode 100644 index 840bf77e..00000000 --- a/uirdesktop/pstcache.c +++ /dev/null @@ -1,200 +0,0 @@ -/* -*- 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; - RD_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; -} |