trunk/rdesktop/cache.c

/*
   rdesktop: A Remote Desktop Protocol client.
   Cache routines
   Copyright (C) Matthew Chapman 1999-2001
   
   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 NUM_ELEMENTS(array) (sizeof(array) / sizeof(array[0]))


/* BITMAP CACHE */
static HBITMAP bmpcache[3][600];

/* Retrieve a bitmap from the cache */
HBITMAP
cache_get_bitmap(uint8 cache_id, uint16 cache_idx)
{
        HBITMAP bitmap;

        if ((cache_id < NUM_ELEMENTS(bmpcache))
            && (cache_idx < NUM_ELEMENTS(bmpcache[0])))
        {
                bitmap = bmpcache[cache_id][cache_idx];
                if (bitmap != NULL)
                        return bitmap;
        }

        error("get bitmap %d:%d\n", cache_id, cache_idx);
        return NULL;
}

/* Store a bitmap in the cache */
void
cache_put_bitmap(uint8 cache_id, uint16 cache_idx, HBITMAP bitmap)
{
        HBITMAP old;

        if ((cache_id < NUM_ELEMENTS(bmpcache))
            && (cache_idx < NUM_ELEMENTS(bmpcache[0])))
        {
                old = bmpcache[cache_id][cache_idx];
                if (old != NULL)
                        ui_destroy_bitmap(old);

                bmpcache[cache_id][cache_idx] = bitmap;
        }
        else
        {
                error("put bitmap %d:%d\n", cache_id, cache_idx);
        }
}


/* FONT CACHE */
static FONTGLYPH fontcache[12][256];

/* Retrieve a glyph from the font cache */
FONTGLYPH *
cache_get_font(uint8 font, uint16 character)
{
        FONTGLYPH *glyph;

        if ((font < NUM_ELEMENTS(fontcache))
            && (character < NUM_ELEMENTS(fontcache[0])))
        {
                glyph = &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, HGLYPH pixmap)
{
        FONTGLYPH *glyph;

        if ((font < NUM_ELEMENTS(fontcache))
            && (character < NUM_ELEMENTS(fontcache[0])))
        {
                glyph = &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 textcache[256];

/* Retrieve a text item from the cache */
DATABLOB *
cache_get_text(uint8 cache_id)
{
        DATABLOB *text;

        if (cache_id < NUM_ELEMENTS(textcache))
        {
                text = &textcache[cache_id];
                if (text->data != NULL)
                        return text;
        }

        error("get text %d\n", cache_id);
        return NULL;
}

/* Store a text item in the cache */
void
cache_put_text(uint8 cache_id, void *data, int length)
{
        DATABLOB *text;

        if (cache_id < NUM_ELEMENTS(textcache))
        {
                text = &textcache[cache_id];
                if (text->data != NULL)
                        xfree(text->data);

                text->data = xmalloc(length);
                text->size = length;
                memcpy(text->data, data, length);
        }
        else
        {
                error("put text %d\n", cache_id);
        }
}


/* DESKTOP CACHE */
static uint8 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 + length) <= sizeof(deskcache))
        {
                return &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 + length) <= sizeof(deskcache))
        {
                cx *= bytes_per_pixel;
                while (cy--)
                {
                        memcpy(&deskcache[offset], data, cx);
                        data += scanline;
                        offset += cx;
                }
        }
        else
        {
                error("put desktop %d:%d\n", offset, length);
        }
}


/* CURSOR CACHE */
static HCURSOR cursorcache[0x20];

/* Retrieve cursor from cache */
HCURSOR
cache_get_cursor(uint16 cache_idx)
{
        HCURSOR cursor;

        if (cache_idx < NUM_ELEMENTS(cursorcache))
        {
                cursor = 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, HCURSOR cursor)
{
        HCURSOR old;

        if (cache_idx < NUM_ELEMENTS(cursorcache))
        {
                old = cursorcache[cache_idx];
                if (old != NULL)
                        ui_destroy_cursor(old);

                cursorcache[cache_idx] = cursor;
        }
        else
        {
                error("put cursor %d\n", cache_idx);
        }
}
1	matty	9	/*
2			rdesktop: A Remote Desktop Protocol client.
3			Cache routines
4	matty	30	Copyright (C) Matthew Chapman 1999-2001
5	matty	9
6			This program is free software; you can redistribute it and/or modify
7			it under the terms of the GNU General Public License as published by
8			the Free Software Foundation; either version 2 of the License, or
9			(at your option) any later version.
10
11			This program is distributed in the hope that it will be useful,
12			but WITHOUT ANY WARRANTY; without even the implied warranty of
13			MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14			GNU General Public License for more details.
15
16			You should have received a copy of the GNU General Public License
17			along with this program; if not, write to the Free Software
18			Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
19			*/
20
21	matty	10	#include "rdesktop.h"
22	matty	9
23	matty	10	#define NUM_ELEMENTS(array) (sizeof(array) / sizeof(array[0]))
24
25
26			/* BITMAP CACHE */
27			static HBITMAP bmpcache[3][600];
28
29			/* Retrieve a bitmap from the cache */
30	matty	25	HBITMAP
31			cache_get_bitmap(uint8 cache_id, uint16 cache_idx)
32	matty	9	{
33			HBITMAP bitmap;
34
35	matty	10	if ((cache_id < NUM_ELEMENTS(bmpcache))
36	matty	24	&& (cache_idx < NUM_ELEMENTS(bmpcache[0])))
37	matty	9	{
38	matty	10	bitmap = bmpcache[cache_id][cache_idx];
39	matty	9	if (bitmap != NULL)
40			return bitmap;
41			}
42
43	matty	30	error("get bitmap %d:%d\n", cache_id, cache_idx);
44	matty	9	return NULL;
45			}
46
47	matty	10	/* Store a bitmap in the cache */
48	matty	25	void
49			cache_put_bitmap(uint8 cache_id, uint16 cache_idx, HBITMAP bitmap)
50	matty	9	{
51			HBITMAP old;
52
53	matty	10	if ((cache_id < NUM_ELEMENTS(bmpcache))
54	matty	24	&& (cache_idx < NUM_ELEMENTS(bmpcache[0])))
55	matty	9	{
56	matty	10	old = bmpcache[cache_id][cache_idx];
57	matty	9	if (old != NULL)
58	matty	10	ui_destroy_bitmap(old);
59	matty	9
60	matty	10	bmpcache[cache_id][cache_idx] = bitmap;
61	matty	9	}
62			else
63			{
64	matty	30	error("put bitmap %d:%d\n", cache_id, cache_idx);
65	matty	9	}
66			}
67
68	matty	10
69			/* FONT CACHE */
70			static FONTGLYPH fontcache[12][256];
71
72			/* Retrieve a glyph from the font cache */
73	matty	25	FONTGLYPH *
74			cache_get_font(uint8 font, uint16 character)
75	matty	9	{
76	matty	10	FONTGLYPH *glyph;
77	matty	9
78	matty	10	if ((font < NUM_ELEMENTS(fontcache))
79	matty	24	&& (character < NUM_ELEMENTS(fontcache[0])))
80	matty	9	{
81	matty	10	glyph = &fontcache[font][character];
82	matty	9	if (glyph->pixmap != NULL)
83			return glyph;
84			}
85
86	matty	30	error("get font %d:%d\n", font, character);
87	matty	9	return NULL;
88			}
89
90	matty	10	/* Store a glyph in the font cache */
91	matty	25	void
92			cache_put_font(uint8 font, uint16 character, uint16 offset,
93			uint16 baseline, uint16 width, uint16 height, HGLYPH pixmap)
94	matty	9	{
95	matty	10	FONTGLYPH *glyph;
96	matty	9
97	matty	10	if ((font < NUM_ELEMENTS(fontcache))
98	matty	24	&& (character < NUM_ELEMENTS(fontcache[0])))
99	matty	9	{
100	matty	10	glyph = &fontcache[font][character];
101	matty	9	if (glyph->pixmap != NULL)
102	matty	10	ui_destroy_glyph(glyph->pixmap);
103	matty	9
104	matty	20	glyph->offset = offset;
105	matty	9	glyph->baseline = baseline;
106			glyph->width = width;
107			glyph->height = height;
108			glyph->pixmap = pixmap;
109			}
110			else
111			{
112	matty	30	error("put font %d:%d\n", font, character);
113	matty	9	}
114			}
115
116	matty	10
117			/* TEXT CACHE */
118			static DATABLOB textcache[256];
119
120			/* Retrieve a text item from the cache */
121	matty	25	DATABLOB *
122			cache_get_text(uint8 cache_id)
123	matty	9	{
124	matty	10	DATABLOB *text;
125	matty	9
126	matty	10	if (cache_id < NUM_ELEMENTS(textcache))
127	matty	9	{
128	matty	10	text = &textcache[cache_id];
129	matty	9	if (text->data != NULL)
130			return text;
131			}
132
133	matty	30	error("get text %d\n", cache_id);
134	matty	9	return NULL;
135			}
136
137	matty	10	/* Store a text item in the cache */
138	matty	25	void
139			cache_put_text(uint8 cache_id, void *data, int length)
140	matty	9	{
141	matty	10	DATABLOB *text;
142	matty	9
143	matty	10	if (cache_id < NUM_ELEMENTS(textcache))
144	matty	9	{
145	matty	10	text = &textcache[cache_id];
146	matty	9	if (text->data != NULL)
147	matty	10	xfree(text->data);
148	matty	9
149	matty	10	text->data = xmalloc(length);
150	matty	9	text->size = length;
151			memcpy(text->data, data, length);
152			}
153			else
154			{
155	matty	30	error("put text %d\n", cache_id);
156	matty	9	}
157			}
158	matty	10
159
160			/* DESKTOP CACHE */
161	matty	28	static uint8 deskcache[0x38400 * 4];
162	matty	10
163			/* Retrieve desktop data from the cache */
164	matty	25	uint8 *
165	matty	28	cache_get_desktop(uint32 offset, int cx, int cy, int bytes_per_pixel)
166	matty	10	{
167	matty	28	int length = cx * cy * bytes_per_pixel;
168	matty	16
169	matty	10	if ((offset + length) <= sizeof(deskcache))
170			{
171			return &deskcache[offset];
172			}
173
174	matty	30	error("get desktop %d:%d\n", offset, length);
175	matty	10	return NULL;
176			}
177
178			/* Store desktop data in the cache */
179	matty	25	void
180	matty	28	cache_put_desktop(uint32 offset, int cx, int cy, int scanline,
181	astrand	64	int bytes_per_pixel, uint8 * data)
182	matty	10	{
183	matty	28	int length = cx * cy * bytes_per_pixel;
184	matty	16
185	matty	10	if ((offset + length) <= sizeof(deskcache))
186			{
187	matty	28	cx *= bytes_per_pixel;
188	matty	16	while (cy--)
189			{
190			memcpy(&deskcache[offset], data, cx);
191			data += scanline;
192			offset += cx;
193			}
194	matty	10	}
195			else
196			{
197	matty	30	error("put desktop %d:%d\n", offset, length);
198	matty	10	}
199			}
200	matty	28
201
202			/* CURSOR CACHE */
203			static HCURSOR cursorcache[0x20];
204
205			/* Retrieve cursor from cache */
206	astrand	64	HCURSOR
207			cache_get_cursor(uint16 cache_idx)
208	matty	28	{
209			HCURSOR cursor;
210
211			if (cache_idx < NUM_ELEMENTS(cursorcache))
212			{
213			cursor = cursorcache[cache_idx];
214			if (cursor != NULL)
215			return cursor;
216			}
217
218	matty	30	error("get cursor %d\n", cache_idx);
219	matty	28	return NULL;
220			}
221
222			/* Store cursor in cache */
223			void
224			cache_put_cursor(uint16 cache_idx, HCURSOR cursor)
225			{
226			HCURSOR old;
227
228			if (cache_idx < NUM_ELEMENTS(cursorcache))
229			{
230			old = cursorcache[cache_idx];
231			if (old != NULL)
232			ui_destroy_cursor(old);
233
234			cursorcache[cache_idx] = cursor;
235			}
236			else
237			{
238	matty	30	error("put cursor %d\n", cache_idx);
239	matty	28	}
240			}