#include "precomp.h"

Include dependency graph for pstcache.c:

Macros
#define	MAX_CELL_SIZE 0x1000 /* pixels */

#define	IS_PERSISTENT(id) (id < 8 && g_pstcache_fd[id] > 0)

Functions
void	pstcache_touch_bitmap (uint8 cache_id, uint16 cache_idx, uint32 stamp)

RD_BOOL	pstcache_load_bitmap (uint8 cache_id, uint16 cache_idx)

RD_BOOL	pstcache_save_bitmap (uint8 cache_id, uint16 cache_idx, uint8 key, uint8 width, uint8 height, uint16 length, uint8 data)

int	pstcache_enumerate (uint8 id, HASH_KEY *keylist)

RD_BOOL	pstcache_init (uint8 cache_id)

Variables
int	g_server_depth

RD_BOOL	g_bitmap_cache

RD_BOOL	g_bitmap_cache_persist_enable

RD_BOOL	g_bitmap_cache_precache

int	g_pstcache_fd [8]

int	g_pstcache_Bpp

RD_BOOL	g_pstcache_enumerated = False

uint8	zero_key [] = { 0, 0, 0, 0, 0, 0, 0, 0 }

Macro Definition Documentation

◆ IS_PERSISTENT

#define IS_PERSISTENT ( id ) (id < 8 && g_pstcache_fd[id] > 0)

Definition at line 24 of file pstcache.c.

◆ MAX_CELL_SIZE

#define MAX_CELL_SIZE 0x1000 /* pixels */

Definition at line 22 of file pstcache.c.

Function Documentation

◆ pstcache_enumerate()

int pstcache_enumerate	(	uint8	id,
		HASH_KEY *	keylist
	)

Definition at line 107 of file pstcache.c.

{
    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;
}

Referenced by rdp_enum_bmpcache2().

◆ pstcache_init()

RD_BOOL pstcache_init ( uint8 cache_id )

Definition at line 163 of file pstcache.c.

{
    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;
}

Referenced by rdp_out_bmpcache2_caps().

◆ pstcache_load_bitmap()

RD_BOOL pstcache_load_bitmap	(	uint8	cache_id,
		uint16	cache_idx
	)

Definition at line 53 of file pstcache.c.

{
    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=%p)\n", cache_id, cache_idx, bitmap));
    cache_put_bitmap(cache_id, cache_idx, bitmap);
 
    xfree(celldata);
    return True;
}

Referenced by cache_get_bitmap(), and pstcache_enumerate().

◆ pstcache_save_bitmap()

RD_BOOL pstcache_save_bitmap	(	uint8	cache_id,
		uint16	cache_idx,
		uint8 *	key,
		uint8	width,
		uint8	height,
		uint16	length,
		uint8 *	data
	)

Definition at line 82 of file pstcache.c.

{
    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;
}

Referenced by process_bmpcache2().

◆ pstcache_touch_bitmap()

void pstcache_touch_bitmap	(	uint8	cache_id,
		uint16	cache_idx,
		uint32	stamp
	)

Definition at line 39 of file pstcache.c.

{
    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));
}