mirror of
https://github.com/reactos/reactos.git
synced 2024-08-26 21:28:48 +00:00
474 lines
10 KiB
C
474 lines
10 KiB
C
/* -*- c-basic-offset: 8 -*-
|
|
rdesktop: A Remote Desktop Protocol client.
|
|
Cache routines
|
|
Copyright (C) Matthew Chapman <matthewc.unsw.edu.au> 1999-2008
|
|
Copyright (C) Jeroen Meijer <jeroen@oldambt7.com> 2005
|
|
Copyright 2003-2011 Peter Astrand <astrand@cendio.se> for Cendio AB
|
|
|
|
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 3 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, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#include "precomp.h"
|
|
|
|
/* BITMAP CACHE */
|
|
extern int g_pstcache_fd[];
|
|
|
|
#define NUM_ELEMENTS(array) (sizeof(array) / sizeof(array[0]))
|
|
//#define IS_PERSISTENT(id) (g_pstcache_fd[id] > 0)
|
|
#define TO_TOP -1
|
|
#define NOT_SET -1
|
|
#define IS_SET(idx) (idx >= 0)
|
|
|
|
/*
|
|
* TODO: Test for optimal value of BUMP_COUNT. TO_TOP gives lowest cpu utilisation but using
|
|
* a positive value will hopefully result in less frequently used bitmaps having a greater chance
|
|
* of being evicted from the cache, and thereby reducing the need to load bitmaps from disk.
|
|
* (Jeroen)
|
|
*/
|
|
#define BUMP_COUNT 40
|
|
|
|
struct bmpcache_entry
|
|
{
|
|
RD_HBITMAP bitmap;
|
|
sint16 previous;
|
|
sint16 next;
|
|
};
|
|
|
|
static struct bmpcache_entry g_bmpcache[3][0xa00];
|
|
static RD_HBITMAP g_volatile_bc[3];
|
|
|
|
static int g_bmpcache_lru[3] = { NOT_SET, NOT_SET, NOT_SET };
|
|
static int g_bmpcache_mru[3] = { NOT_SET, NOT_SET, NOT_SET };
|
|
|
|
static int g_bmpcache_count[3];
|
|
|
|
/* Setup the bitmap cache lru/mru linked list */
|
|
void
|
|
cache_rebuild_bmpcache_linked_list(uint8 id, sint16 * idx, int count)
|
|
{
|
|
int n = count, c = 0;
|
|
sint16 n_idx;
|
|
|
|
/* find top, skip evicted bitmaps */
|
|
while (--n >= 0 && g_bmpcache[id][idx[n]].bitmap == NULL);
|
|
if (n < 0)
|
|
{
|
|
g_bmpcache_mru[id] = g_bmpcache_lru[id] = NOT_SET;
|
|
return;
|
|
}
|
|
|
|
g_bmpcache_mru[id] = idx[n];
|
|
g_bmpcache[id][idx[n]].next = NOT_SET;
|
|
n_idx = idx[n];
|
|
c++;
|
|
|
|
/* link list */
|
|
while (n >= 0)
|
|
{
|
|
/* skip evicted bitmaps */
|
|
while (--n >= 0 && g_bmpcache[id][idx[n]].bitmap == NULL);
|
|
|
|
if (n < 0)
|
|
break;
|
|
|
|
g_bmpcache[id][n_idx].previous = idx[n];
|
|
g_bmpcache[id][idx[n]].next = n_idx;
|
|
n_idx = idx[n];
|
|
c++;
|
|
}
|
|
|
|
g_bmpcache[id][n_idx].previous = NOT_SET;
|
|
g_bmpcache_lru[id] = n_idx;
|
|
|
|
if (c != g_bmpcache_count[id])
|
|
{
|
|
error("Oops. %d in bitmap cache linked list, %d in ui cache...\n", c,
|
|
g_bmpcache_count[id]);
|
|
exit(EX_SOFTWARE);
|
|
}
|
|
}
|
|
|
|
/* Move a bitmap to a new position in the linked list. */
|
|
void
|
|
cache_bump_bitmap(uint8 id, uint16 idx, int bump)
|
|
{
|
|
int p_idx, n_idx, n;
|
|
|
|
if (!IS_PERSISTENT(id))
|
|
return;
|
|
|
|
if (g_bmpcache_mru[id] == idx)
|
|
return;
|
|
|
|
DEBUG_RDP5(("bump bitmap: id=%d, idx=%d, bump=%d\n", id, idx, bump));
|
|
|
|
n_idx = g_bmpcache[id][idx].next;
|
|
p_idx = g_bmpcache[id][idx].previous;
|
|
|
|
if (IS_SET(n_idx))
|
|
{
|
|
/* remove */
|
|
--g_bmpcache_count[id];
|
|
if (IS_SET(p_idx))
|
|
g_bmpcache[id][p_idx].next = n_idx;
|
|
else
|
|
g_bmpcache_lru[id] = n_idx;
|
|
if (IS_SET(n_idx))
|
|
g_bmpcache[id][n_idx].previous = p_idx;
|
|
else
|
|
g_bmpcache_mru[id] = p_idx;
|
|
}
|
|
else
|
|
{
|
|
p_idx = NOT_SET;
|
|
n_idx = g_bmpcache_lru[id];
|
|
}
|
|
|
|
if (bump >= 0)
|
|
{
|
|
for (n = 0; n < bump && IS_SET(n_idx); n++)
|
|
{
|
|
p_idx = n_idx;
|
|
n_idx = g_bmpcache[id][p_idx].next;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
p_idx = g_bmpcache_mru[id];
|
|
n_idx = NOT_SET;
|
|
}
|
|
|
|
/* insert */
|
|
++g_bmpcache_count[id];
|
|
g_bmpcache[id][idx].previous = p_idx;
|
|
g_bmpcache[id][idx].next = n_idx;
|
|
|
|
if (p_idx >= 0)
|
|
g_bmpcache[id][p_idx].next = idx;
|
|
else
|
|
g_bmpcache_lru[id] = idx;
|
|
|
|
if (n_idx >= 0)
|
|
g_bmpcache[id][n_idx].previous = idx;
|
|
else
|
|
g_bmpcache_mru[id] = idx;
|
|
}
|
|
|
|
/* Evict the least-recently used bitmap from the cache */
|
|
void
|
|
cache_evict_bitmap(uint8 id)
|
|
{
|
|
uint16 idx;
|
|
int n_idx;
|
|
|
|
if (!IS_PERSISTENT(id))
|
|
return;
|
|
|
|
idx = g_bmpcache_lru[id];
|
|
n_idx = g_bmpcache[id][idx].next;
|
|
DEBUG_RDP5(("evict bitmap: id=%d idx=%d n_idx=%d bmp=%p\n", id, idx, n_idx,
|
|
g_bmpcache[id][idx].bitmap));
|
|
|
|
ui_destroy_bitmap(g_bmpcache[id][idx].bitmap);
|
|
--g_bmpcache_count[id];
|
|
g_bmpcache[id][idx].bitmap = 0;
|
|
|
|
g_bmpcache_lru[id] = n_idx;
|
|
g_bmpcache[id][n_idx].previous = NOT_SET;
|
|
|
|
pstcache_touch_bitmap(id, idx, 0);
|
|
}
|
|
|
|
/* Retrieve a bitmap from the cache */
|
|
RD_HBITMAP
|
|
cache_get_bitmap(uint8 id, uint16 idx)
|
|
{
|
|
if ((id < NUM_ELEMENTS(g_bmpcache)) && (idx < NUM_ELEMENTS(g_bmpcache[0])))
|
|
{
|
|
if (g_bmpcache[id][idx].bitmap || pstcache_load_bitmap(id, idx))
|
|
{
|
|
if (IS_PERSISTENT(id))
|
|
cache_bump_bitmap(id, idx, BUMP_COUNT);
|
|
|
|
return g_bmpcache[id][idx].bitmap;
|
|
}
|
|
}
|
|
else if ((id < NUM_ELEMENTS(g_volatile_bc)) && (idx == 0x7fff))
|
|
{
|
|
return g_volatile_bc[id];
|
|
}
|
|
|
|
error("get bitmap %d:%d\n", id, idx);
|
|
return NULL;
|
|
}
|
|
|
|
/* Store a bitmap in the cache */
|
|
void
|
|
cache_put_bitmap(uint8 id, uint16 idx, RD_HBITMAP bitmap)
|
|
{
|
|
RD_HBITMAP old;
|
|
|
|
if ((id < NUM_ELEMENTS(g_bmpcache)) && (idx < NUM_ELEMENTS(g_bmpcache[0])))
|
|
{
|
|
old = g_bmpcache[id][idx].bitmap;
|
|
if (old != NULL)
|
|
ui_destroy_bitmap(old);
|
|
g_bmpcache[id][idx].bitmap = bitmap;
|
|
|
|
if (IS_PERSISTENT(id))
|
|
{
|
|
if (old == NULL)
|
|
g_bmpcache[id][idx].previous = g_bmpcache[id][idx].next = NOT_SET;
|
|
|
|
cache_bump_bitmap(id, idx, TO_TOP);
|
|
if (g_bmpcache_count[id] > BMPCACHE2_C2_CELLS)
|
|
cache_evict_bitmap(id);
|
|
}
|
|
}
|
|
else if ((id < NUM_ELEMENTS(g_volatile_bc)) && (idx == 0x7fff))
|
|
{
|
|
old = g_volatile_bc[id];
|
|
if (old != NULL)
|
|
ui_destroy_bitmap(old);
|
|
g_volatile_bc[id] = bitmap;
|
|
}
|
|
else
|
|
{
|
|
error("put bitmap %d:%d\n", id, idx);
|
|
}
|
|
}
|
|
|
|
/* Updates the persistent bitmap cache MRU information on exit */
|
|
void
|
|
cache_save_state(void)
|
|
{
|
|
uint32 id = 0, t = 0;
|
|
int idx;
|
|
|
|
for (id = 0; id < NUM_ELEMENTS(g_bmpcache); id++)
|
|
if (IS_PERSISTENT(id))
|
|
{
|
|
DEBUG_RDP5(("Saving cache state for bitmap cache %d...", id));
|
|
idx = g_bmpcache_lru[id];
|
|
while (idx >= 0)
|
|
{
|
|
pstcache_touch_bitmap(id, idx, ++t);
|
|
idx = g_bmpcache[id][idx].next;
|
|
}
|
|
DEBUG_RDP5((" %d stamps written.\n", t));
|
|
}
|
|
}
|
|
|
|
|
|
/* FONT CACHE */
|
|
static FONTGLYPH g_fontcache[12][256];
|
|
|
|
/* Retrieve a glyph from the font cache */
|
|
FONTGLYPH *
|
|
cache_get_font(uint8 font, uint16 character)
|
|
{
|
|
FONTGLYPH *glyph;
|
|
|
|
if ((font < NUM_ELEMENTS(g_fontcache)) && (character < NUM_ELEMENTS(g_fontcache[0])))
|
|
{
|
|
glyph = &g_fontcache[font][character];
|
|
if (glyph->pixmap != NULL)
|
|
return glyph;
|
|
}
|
|
|
|
error("get font %d:%d\n", font, character);
|
|
return NULL;
|
|
}
|
|
|
|
/* Store a glyph in the font cache */
|
|
void
|
|
cache_put_font(uint8 font, uint16 character, uint16 offset,
|
|
uint16 baseline, uint16 width, uint16 height, RD_HGLYPH pixmap)
|
|
{
|
|
FONTGLYPH *glyph;
|
|
|
|
if ((font < NUM_ELEMENTS(g_fontcache)) && (character < NUM_ELEMENTS(g_fontcache[0])))
|
|
{
|
|
glyph = &g_fontcache[font][character];
|
|
if (glyph->pixmap != NULL)
|
|
ui_destroy_glyph(glyph->pixmap);
|
|
|
|
glyph->offset = offset;
|
|
glyph->baseline = baseline;
|
|
glyph->width = width;
|
|
glyph->height = height;
|
|
glyph->pixmap = pixmap;
|
|
}
|
|
else
|
|
{
|
|
error("put font %d:%d\n", font, character);
|
|
}
|
|
}
|
|
|
|
|
|
/* TEXT CACHE */
|
|
static DATABLOB g_textcache[256];
|
|
|
|
/* Retrieve a text item from the cache */
|
|
DATABLOB *
|
|
cache_get_text(uint8 cache_id)
|
|
{
|
|
DATABLOB *text;
|
|
|
|
text = &g_textcache[cache_id];
|
|
return text;
|
|
}
|
|
|
|
/* Store a text item in the cache */
|
|
void
|
|
cache_put_text(uint8 cache_id, void *data, int length)
|
|
{
|
|
DATABLOB *text;
|
|
|
|
text = &g_textcache[cache_id];
|
|
if (text->data != NULL)
|
|
xfree(text->data);
|
|
text->data = xmalloc(length);
|
|
text->size = length;
|
|
memcpy(text->data, data, length);
|
|
}
|
|
|
|
|
|
/* DESKTOP CACHE */
|
|
static uint8 g_deskcache[0x38400 * 4];
|
|
|
|
/* Retrieve desktop data from the cache */
|
|
uint8 *
|
|
cache_get_desktop(uint32 offset, int cx, int cy, int bytes_per_pixel)
|
|
{
|
|
int length = cx * cy * bytes_per_pixel;
|
|
|
|
if (offset > sizeof(g_deskcache))
|
|
offset = 0;
|
|
|
|
if ((offset + length) <= sizeof(g_deskcache))
|
|
{
|
|
return &g_deskcache[offset];
|
|
}
|
|
|
|
error("get desktop %d:%d\n", offset, length);
|
|
return NULL;
|
|
}
|
|
|
|
/* Store desktop data in the cache */
|
|
void
|
|
cache_put_desktop(uint32 offset, int cx, int cy, int scanline, int bytes_per_pixel, uint8 * data)
|
|
{
|
|
int length = cx * cy * bytes_per_pixel;
|
|
|
|
if (offset > sizeof(g_deskcache))
|
|
offset = 0;
|
|
|
|
if ((offset + length) <= sizeof(g_deskcache))
|
|
{
|
|
cx *= bytes_per_pixel;
|
|
while (cy--)
|
|
{
|
|
memcpy(&g_deskcache[offset], data, cx);
|
|
data += scanline;
|
|
offset += cx;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
error("put desktop %d:%d\n", offset, length);
|
|
}
|
|
}
|
|
|
|
|
|
/* CURSOR CACHE */
|
|
static RD_HCURSOR g_cursorcache[0x20];
|
|
|
|
/* Retrieve cursor from cache */
|
|
RD_HCURSOR
|
|
cache_get_cursor(uint16 cache_idx)
|
|
{
|
|
RD_HCURSOR cursor;
|
|
|
|
if (cache_idx < NUM_ELEMENTS(g_cursorcache))
|
|
{
|
|
cursor = g_cursorcache[cache_idx];
|
|
if (cursor != NULL)
|
|
return cursor;
|
|
}
|
|
|
|
error("get cursor %d\n", cache_idx);
|
|
return NULL;
|
|
}
|
|
|
|
/* Store cursor in cache */
|
|
void
|
|
cache_put_cursor(uint16 cache_idx, RD_HCURSOR cursor)
|
|
{
|
|
RD_HCURSOR old;
|
|
|
|
if (cache_idx < NUM_ELEMENTS(g_cursorcache))
|
|
{
|
|
old = g_cursorcache[cache_idx];
|
|
if (old != NULL)
|
|
ui_destroy_cursor(old);
|
|
|
|
g_cursorcache[cache_idx] = cursor;
|
|
}
|
|
else
|
|
{
|
|
error("put cursor %d\n", cache_idx);
|
|
}
|
|
}
|
|
|
|
/* BRUSH CACHE */
|
|
/* index 0 is 2 colour brush, index 1 is muti colour brush */
|
|
static BRUSHDATA g_brushcache[2][64];
|
|
|
|
/* Retrieve brush from cache */
|
|
BRUSHDATA *
|
|
cache_get_brush_data(uint8 colour_code, uint8 idx)
|
|
{
|
|
colour_code = colour_code == 1 ? 0 : 1;
|
|
if (idx < NUM_ELEMENTS(g_brushcache[0]))
|
|
{
|
|
return &g_brushcache[colour_code][idx];
|
|
}
|
|
error("get brush %d %d\n", colour_code, idx);
|
|
return NULL;
|
|
}
|
|
|
|
/* Store brush in cache */
|
|
/* this function takes over the data pointer in struct, eg, caller gives it up */
|
|
void
|
|
cache_put_brush_data(uint8 colour_code, uint8 idx, BRUSHDATA * brush_data)
|
|
{
|
|
BRUSHDATA *bd;
|
|
|
|
colour_code = colour_code == 1 ? 0 : 1;
|
|
if (idx < NUM_ELEMENTS(g_brushcache[0]))
|
|
{
|
|
bd = &g_brushcache[colour_code][idx];
|
|
if (bd->data != 0)
|
|
{
|
|
xfree(bd->data);
|
|
}
|
|
memcpy(bd, brush_data, sizeof(BRUSHDATA));
|
|
}
|
|
else
|
|
{
|
|
error("put brush %d %d\n", colour_code, idx);
|
|
}
|
|
}
|