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/* |
/* |
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rdesktop: A Remote Desktop Protocol client. |
rdesktop: A Remote Desktop Protocol client. |
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Cache routines |
Cache routines |
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Copyright (C) Matthew Chapman 1999-2001 |
Copyright (C) Matthew Chapman 1999-2002 |
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This program is free software; you can redistribute it and/or modify |
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 |
it under the terms of the GNU General Public License as published by |
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#include "rdesktop.h" |
#include "rdesktop.h" |
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#define NUM_ELEMENTS(array) (sizeof(array) / sizeof(array[0])) |
#define NUM_ELEMENTS(array) (sizeof(array) / sizeof(array[0])) |
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#define TOUCH(id, idx) (g_bmpcache[id][idx].usage = ++g_stamp) |
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#define IS_PERSISTENT(id) (g_pstcache_fd[id] > 0) |
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extern int g_pstcache_fd[]; |
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uint32 g_stamp; |
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int g_num_bitmaps_in_memory[3]; |
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/* BITMAP CACHE */ |
/* BITMAP CACHE */ |
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static HBITMAP bmpcache[3][600]; |
static BMPCACHEENTRY g_bmpcache[3][0xa00]; |
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static HBITMAP g_volatile_bc[3]; |
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/* Remove the least-recently used bitmap from the cache */ |
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void |
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cache_remove_lru_bitmap(uint8 cache_id) |
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{ |
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int i; |
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uint16 cache_idx = 0; |
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uint32 m = (uint32)-1; |
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BMPCACHEENTRY *pbce; |
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for (i = 0; i < NUM_ELEMENTS(g_bmpcache[cache_id]); i++) |
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{ |
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if (g_bmpcache[cache_id][i].bitmap && g_bmpcache[cache_id][i].usage < m) |
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{ |
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cache_idx = i; |
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m = g_bmpcache[cache_id][i].usage; |
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} |
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} |
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pbce = &g_bmpcache[cache_id][cache_idx]; |
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ui_destroy_bitmap(pbce->bitmap); |
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--g_num_bitmaps_in_memory[cache_id]; |
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pbce->bitmap = 0; |
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pbce->usage = 0; |
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} |
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/* Retrieve a bitmap from the cache */ |
/* Retrieve a bitmap from the cache */ |
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HBITMAP |
HBITMAP |
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cache_get_bitmap(uint8 cache_id, uint16 cache_idx) |
cache_get_bitmap(uint8 cache_id, uint16 cache_idx) |
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{ |
{ |
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HBITMAP bitmap; |
HBITMAP *pbitmap; |
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if ((cache_id < NUM_ELEMENTS(bmpcache)) && (cache_idx < NUM_ELEMENTS(bmpcache[0]))) |
if ((cache_id < NUM_ELEMENTS(g_bmpcache)) && (cache_idx < NUM_ELEMENTS(g_bmpcache[0]))) |
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{ |
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pbitmap = &g_bmpcache[cache_id][cache_idx].bitmap; |
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if ((*pbitmap != 0) || pstcache_load_bitmap(cache_id, cache_idx)) |
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{ |
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if (IS_PERSISTENT(cache_id)) |
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TOUCH(cache_id, cache_idx); |
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return *pbitmap; |
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} |
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} |
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else if ((cache_id < NUM_ELEMENTS(g_volatile_bc)) && (cache_idx == 0x7fff)) |
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{ |
{ |
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bitmap = bmpcache[cache_id][cache_idx]; |
return g_volatile_bc[cache_id]; |
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if (bitmap != NULL) |
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return bitmap; |
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} |
} |
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error("get bitmap %d:%d\n", cache_id, cache_idx); |
error("get bitmap %d:%d\n", cache_id, cache_idx); |
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/* Store a bitmap in the cache */ |
/* Store a bitmap in the cache */ |
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void |
void |
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cache_put_bitmap(uint8 cache_id, uint16 cache_idx, HBITMAP bitmap) |
cache_put_bitmap(uint8 cache_id, uint16 cache_idx, HBITMAP bitmap, uint32 stamp) |
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{ |
{ |
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HBITMAP old; |
HBITMAP old; |
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if ((cache_id < NUM_ELEMENTS(bmpcache)) && (cache_idx < NUM_ELEMENTS(bmpcache[0]))) |
if ((cache_id < NUM_ELEMENTS(g_bmpcache)) && (cache_idx < NUM_ELEMENTS(g_bmpcache[0]))) |
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{ |
{ |
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old = bmpcache[cache_id][cache_idx]; |
old = g_bmpcache[cache_id][cache_idx].bitmap; |
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if (old != NULL) |
if (old != NULL) |
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{ |
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ui_destroy_bitmap(old); |
ui_destroy_bitmap(old); |
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} |
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else |
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{ |
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if (++g_num_bitmaps_in_memory[cache_id] > BMPCACHE2_C2_CELLS) |
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cache_remove_lru_bitmap(cache_id); |
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} |
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bmpcache[cache_id][cache_idx] = bitmap; |
g_bmpcache[cache_id][cache_idx].bitmap = bitmap; |
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g_bmpcache[cache_id][cache_idx].usage = stamp; |
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} |
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else if ((cache_id < NUM_ELEMENTS(g_volatile_bc)) && (cache_idx == 0x7fff)) |
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{ |
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old = g_volatile_bc[cache_id]; |
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if (old != NULL) |
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ui_destroy_bitmap(old); |
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g_volatile_bc[cache_id] = bitmap; |
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} |
} |
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else |
else |
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{ |
{ |
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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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int id, 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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for (idx = 0; idx < NUM_ELEMENTS(g_bmpcache[id]); idx++) |
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pstcache_touch_bitmap(id, idx, g_bmpcache[id][idx].usage); |
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} |
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/* FONT CACHE */ |
/* FONT CACHE */ |
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static FONTGLYPH fontcache[12][256]; |
static FONTGLYPH g_fontcache[12][256]; |
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/* Retrieve a glyph from the font cache */ |
/* Retrieve a glyph from the font cache */ |
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FONTGLYPH * |
FONTGLYPH * |
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{ |
{ |
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FONTGLYPH *glyph; |
FONTGLYPH *glyph; |
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if ((font < NUM_ELEMENTS(fontcache)) && (character < NUM_ELEMENTS(fontcache[0]))) |
if ((font < NUM_ELEMENTS(g_fontcache)) && (character < NUM_ELEMENTS(g_fontcache[0]))) |
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{ |
{ |
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glyph = &fontcache[font][character]; |
glyph = &g_fontcache[font][character]; |
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if (glyph->pixmap != NULL) |
if (glyph->pixmap != NULL) |
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return glyph; |
return glyph; |
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} |
} |
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{ |
{ |
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FONTGLYPH *glyph; |
FONTGLYPH *glyph; |
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if ((font < NUM_ELEMENTS(fontcache)) && (character < NUM_ELEMENTS(fontcache[0]))) |
if ((font < NUM_ELEMENTS(g_fontcache)) && (character < NUM_ELEMENTS(g_fontcache[0]))) |
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{ |
{ |
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glyph = &fontcache[font][character]; |
glyph = &g_fontcache[font][character]; |
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if (glyph->pixmap != NULL) |
if (glyph->pixmap != NULL) |
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ui_destroy_glyph(glyph->pixmap); |
ui_destroy_glyph(glyph->pixmap); |
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/* TEXT CACHE */ |
/* TEXT CACHE */ |
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static DATABLOB textcache[256]; |
static DATABLOB g_textcache[256]; |
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/* Retrieve a text item from the cache */ |
/* Retrieve a text item from the cache */ |
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DATABLOB * |
DATABLOB * |
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{ |
{ |
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DATABLOB *text; |
DATABLOB *text; |
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if (cache_id < NUM_ELEMENTS(textcache)) |
if (cache_id < NUM_ELEMENTS(g_textcache)) |
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{ |
{ |
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text = &textcache[cache_id]; |
text = &g_textcache[cache_id]; |
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if (text->data != NULL) |
if (text->data != NULL) |
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return text; |
return text; |
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} |
} |
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{ |
{ |
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DATABLOB *text; |
DATABLOB *text; |
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if (cache_id < NUM_ELEMENTS(textcache)) |
if (cache_id < NUM_ELEMENTS(g_textcache)) |
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{ |
{ |
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text = &textcache[cache_id]; |
text = &g_textcache[cache_id]; |
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if (text->data != NULL) |
if (text->data != NULL) |
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xfree(text->data); |
xfree(text->data); |
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/* DESKTOP CACHE */ |
/* DESKTOP CACHE */ |
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static uint8 deskcache[0x38400 * 4]; |
static uint8 g_deskcache[0x38400 * 4]; |
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/* Retrieve desktop data from the cache */ |
/* Retrieve desktop data from the cache */ |
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uint8 * |
uint8 * |
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{ |
{ |
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int length = cx * cy * bytes_per_pixel; |
int length = cx * cy * bytes_per_pixel; |
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if ((offset + length) <= sizeof(deskcache)) |
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 &deskcache[offset]; |
return &g_deskcache[offset]; |
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} |
} |
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error("get desktop %d:%d\n", offset, length); |
error("get desktop %d:%d\n", offset, length); |
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{ |
{ |
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int length = cx * cy * bytes_per_pixel; |
int length = cx * cy * bytes_per_pixel; |
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if ((offset + length) <= sizeof(deskcache)) |
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; |
cx *= bytes_per_pixel; |
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while (cy--) |
while (cy--) |
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{ |
{ |
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memcpy(&deskcache[offset], data, cx); |
memcpy(&g_deskcache[offset], data, cx); |
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data += scanline; |
data += scanline; |
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offset += cx; |
offset += cx; |
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} |
} |
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/* CURSOR CACHE */ |
/* CURSOR CACHE */ |
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static HCURSOR cursorcache[0x20]; |
static HCURSOR g_cursorcache[0x20]; |
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/* Retrieve cursor from cache */ |
/* Retrieve cursor from cache */ |
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HCURSOR |
HCURSOR |
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{ |
{ |
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HCURSOR cursor; |
HCURSOR cursor; |
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if (cache_idx < NUM_ELEMENTS(cursorcache)) |
if (cache_idx < NUM_ELEMENTS(g_cursorcache)) |
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{ |
{ |
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cursor = cursorcache[cache_idx]; |
cursor = g_cursorcache[cache_idx]; |
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if (cursor != NULL) |
if (cursor != NULL) |
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return cursor; |
return cursor; |
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} |
} |
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{ |
{ |
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HCURSOR old; |
HCURSOR old; |
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if (cache_idx < NUM_ELEMENTS(cursorcache)) |
if (cache_idx < NUM_ELEMENTS(g_cursorcache)) |
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{ |
{ |
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old = cursorcache[cache_idx]; |
old = g_cursorcache[cache_idx]; |
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if (old != NULL) |
if (old != NULL) |
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ui_destroy_cursor(old); |
ui_destroy_cursor(old); |
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cursorcache[cache_idx] = cursor; |
g_cursorcache[cache_idx] = cursor; |
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} |
} |
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else |
else |
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{ |
{ |