trunk/rdesktop/cache.c

/*
   rdesktop: A Remote Desktop Protocol client.
   Cache routines
   Copyright (C) Matthew Chapman 1999-2002
   
   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 g_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(g_bmpcache)) && (cache_idx < NUM_ELEMENTS(g_bmpcache[0])))
        {
                bitmap = g_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(g_bmpcache)) && (cache_idx < NUM_ELEMENTS(g_bmpcache[0])))
        {
                old = g_bmpcache[cache_id][cache_idx];
                if (old != NULL)
                        ui_destroy_bitmap(old);

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


/* 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, 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;

        if (cache_id < NUM_ELEMENTS(g_textcache))
        {
                text = &g_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(g_textcache))
        {
                text = &g_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 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 HCURSOR g_cursorcache[0x20];

/* Retrieve cursor from cache */
HCURSOR
cache_get_cursor(uint16 cache_idx)
{
        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, HCURSOR cursor)
{
        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);
        }
}
1	matty	9	/*
2			rdesktop: A Remote Desktop Protocol client.
3			Cache routines
4	matthewc	207	Copyright (C) Matthew Chapman 1999-2002
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	jsorg71	379	static HBITMAP g_bmpcache[3][600];
28	matty	10
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	jsorg71	379	if ((cache_id < NUM_ELEMENTS(g_bmpcache)) && (cache_idx < NUM_ELEMENTS(g_bmpcache[0])))
36	matty	9	{
37	jsorg71	379	bitmap = g_bmpcache[cache_id][cache_idx];
38	matty	9	if (bitmap != NULL)
39			return bitmap;
40			}
41
42	matty	30	error("get bitmap %d:%d\n", cache_id, cache_idx);
43	matty	9	return NULL;
44			}
45
46	matty	10	/* Store a bitmap in the cache */
47	matty	25	void
48			cache_put_bitmap(uint8 cache_id, uint16 cache_idx, HBITMAP bitmap)
49	matty	9	{
50			HBITMAP old;
51
52	jsorg71	379	if ((cache_id < NUM_ELEMENTS(g_bmpcache)) && (cache_idx < NUM_ELEMENTS(g_bmpcache[0])))
53	matty	9	{
54	jsorg71	379	old = g_bmpcache[cache_id][cache_idx];
55	matty	9	if (old != NULL)
56	matty	10	ui_destroy_bitmap(old);
57	matty	9
58	jsorg71	379	g_bmpcache[cache_id][cache_idx] = bitmap;
59	matty	9	}
60			else
61			{
62	matty	30	error("put bitmap %d:%d\n", cache_id, cache_idx);
63	matty	9	}
64			}
65
66	matty	10
67			/* FONT CACHE */
68	jsorg71	379	static FONTGLYPH g_fontcache[12][256];
69	matty	10
70			/* Retrieve a glyph from the font cache */
71	matty	25	FONTGLYPH *
72			cache_get_font(uint8 font, uint16 character)
73	matty	9	{
74	matty	10	FONTGLYPH *glyph;
75	matty	9
76	jsorg71	379	if ((font < NUM_ELEMENTS(g_fontcache)) && (character < NUM_ELEMENTS(g_fontcache[0])))
77	matty	9	{
78	jsorg71	379	glyph = &g_fontcache[font][character];
79	matty	9	if (glyph->pixmap != NULL)
80			return glyph;
81			}
82
83	matty	30	error("get font %d:%d\n", font, character);
84	matty	9	return NULL;
85			}
86
87	matty	10	/* Store a glyph in the font cache */
88	matty	25	void
89			cache_put_font(uint8 font, uint16 character, uint16 offset,
90			uint16 baseline, uint16 width, uint16 height, HGLYPH pixmap)
91	matty	9	{
92	matty	10	FONTGLYPH *glyph;
93	matty	9
94	jsorg71	379	if ((font < NUM_ELEMENTS(g_fontcache)) && (character < NUM_ELEMENTS(g_fontcache[0])))
95	matty	9	{
96	jsorg71	379	glyph = &g_fontcache[font][character];
97	matty	9	if (glyph->pixmap != NULL)
98	matty	10	ui_destroy_glyph(glyph->pixmap);
99	matty	9
100	matty	20	glyph->offset = offset;
101	matty	9	glyph->baseline = baseline;
102			glyph->width = width;
103			glyph->height = height;
104			glyph->pixmap = pixmap;
105			}
106			else
107			{
108	matty	30	error("put font %d:%d\n", font, character);
109	matty	9	}
110			}
111
112	matty	10
113			/* TEXT CACHE */
114	jsorg71	379	static DATABLOB g_textcache[256];
115	matty	10
116			/* Retrieve a text item from the cache */
117	matty	25	DATABLOB *
118			cache_get_text(uint8 cache_id)
119	matty	9	{
120	matty	10	DATABLOB *text;
121	matty	9
122	jsorg71	379	if (cache_id < NUM_ELEMENTS(g_textcache))
123	matty	9	{
124	jsorg71	379	text = &g_textcache[cache_id];
125	matty	9	if (text->data != NULL)
126			return text;
127			}
128
129	matty	30	error("get text %d\n", cache_id);
130	matty	9	return NULL;
131			}
132
133	matty	10	/* Store a text item in the cache */
134	matty	25	void
135			cache_put_text(uint8 cache_id, void *data, int length)
136	matty	9	{
137	matty	10	DATABLOB *text;
138	matty	9
139	jsorg71	379	if (cache_id < NUM_ELEMENTS(g_textcache))
140	matty	9	{
141	jsorg71	379	text = &g_textcache[cache_id];
142	matty	9	if (text->data != NULL)
143	matty	10	xfree(text->data);
144	matty	9
145	matty	10	text->data = xmalloc(length);
146	matty	9	text->size = length;
147			memcpy(text->data, data, length);
148			}
149			else
150			{
151	matty	30	error("put text %d\n", cache_id);
152	matty	9	}
153			}
154	matty	10
155
156			/* DESKTOP CACHE */
157	jsorg71	379	static uint8 g_deskcache[0x38400 * 4];
158	matty	10
159			/* Retrieve desktop data from the cache */
160	matty	25	uint8 *
161	matty	28	cache_get_desktop(uint32 offset, int cx, int cy, int bytes_per_pixel)
162	matty	10	{
163	matty	28	int length = cx * cy * bytes_per_pixel;
164	matty	16
165	jsorg71	563	if (offset > sizeof(g_deskcache))
166			offset = 0;
167
168	jsorg71	379	if ((offset + length) <= sizeof(g_deskcache))
169	matty	10	{
170	jsorg71	379	return &g_deskcache[offset];
171	matty	10	}
172
173	matty	30	error("get desktop %d:%d\n", offset, length);
174	matty	10	return NULL;
175			}
176
177			/* Store desktop data in the cache */
178	matty	25	void
179	astrand	82	cache_put_desktop(uint32 offset, int cx, int cy, int scanline, int bytes_per_pixel, uint8 * data)
180	matty	10	{
181	matty	28	int length = cx * cy * bytes_per_pixel;
182	matty	16
183	jsorg71	563	if (offset > sizeof(g_deskcache))
184			offset = 0;
185
186	jsorg71	379	if ((offset + length) <= sizeof(g_deskcache))
187	matty	10	{
188	matty	28	cx *= bytes_per_pixel;
189	matty	16	while (cy--)
190			{
191	jsorg71	379	memcpy(&g_deskcache[offset], data, cx);
192	matty	16	data += scanline;
193			offset += cx;
194			}
195	matty	10	}
196			else
197			{
198	matty	30	error("put desktop %d:%d\n", offset, length);
199	matty	10	}
200			}
201	matty	28
202
203			/* CURSOR CACHE */
204	jsorg71	379	static HCURSOR g_cursorcache[0x20];
205	matty	28
206			/* Retrieve cursor from cache */
207	astrand	64	HCURSOR
208			cache_get_cursor(uint16 cache_idx)
209	matty	28	{
210			HCURSOR cursor;
211
212	jsorg71	379	if (cache_idx < NUM_ELEMENTS(g_cursorcache))
213	matty	28	{
214	jsorg71	379	cursor = g_cursorcache[cache_idx];
215	matty	28	if (cursor != NULL)
216			return cursor;
217			}
218
219	matty	30	error("get cursor %d\n", cache_idx);
220	matty	28	return NULL;
221			}
222
223			/* Store cursor in cache */
224			void
225			cache_put_cursor(uint16 cache_idx, HCURSOR cursor)
226			{
227			HCURSOR old;
228
229	jsorg71	379	if (cache_idx < NUM_ELEMENTS(g_cursorcache))
230	matty	28	{
231	jsorg71	379	old = g_cursorcache[cache_idx];
232	matty	28	if (old != NULL)
233			ui_destroy_cursor(old);
234
235	jsorg71	379	g_cursorcache[cache_idx] = cursor;
236	matty	28	}
237			else
238			{
239	matty	30	error("put cursor %d\n", cache_idx);
240	matty	28	}
241			}