rdesktop/trunk/cache.c

/*
   rdesktop: A Remote Desktop Protocol client.
   Cache routines
   Copyright (C) Matthew Chapman 1999-2000
   
   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];

/* Retrieve desktop data from the cache */
uint8 *cache_get_desktop(uint32 offset, int cx, int cy)
{
        int length = cx * cy;

        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, uint8 *data)
{
        int length = cx * cy;

        if ((offset + length) <= sizeof(deskcache))
        {
                while (cy--)
                {
                        memcpy(&deskcache[offset], data, cx);
                        data += scanline;
                        offset += cx;
                }
        }
        else
        {
                ERROR("put desktop %d:%d\n", offset, length);
        }
}

1	matty	9	/*
2			rdesktop: A Remote Desktop Protocol client.
3			Cache routines
4			Copyright (C) Matthew Chapman 1999-2000
5
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			HBITMAP cache_get_bitmap(uint8 cache_id, uint16 cache_idx)
31	matty	9	{
32			HBITMAP bitmap;
33
34	matty	10	if ((cache_id < NUM_ELEMENTS(bmpcache))
35			&& (cache_idx < NUM_ELEMENTS(bmpcache[0])))
36	matty	9	{
37	matty	10	bitmap = bmpcache[cache_id][cache_idx];
38	matty	9	if (bitmap != NULL)
39			return bitmap;
40			}
41
42	matty	10	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			void cache_put_bitmap(uint8 cache_id, uint16 cache_idx, HBITMAP bitmap)
48	matty	9	{
49			HBITMAP old;
50
51	matty	10	if ((cache_id < NUM_ELEMENTS(bmpcache))
52			&& (cache_idx < NUM_ELEMENTS(bmpcache[0])))
53	matty	9	{
54	matty	10	old = bmpcache[cache_id][cache_idx];
55	matty	9	if (old != NULL)
56	matty	10	ui_destroy_bitmap(old);
57	matty	9
58	matty	10	bmpcache[cache_id][cache_idx] = bitmap;
59	matty	9	}
60			else
61			{
62	matty	10	ERROR("put bitmap %d:%d\n", cache_id, cache_idx);
63	matty	9	}
64			}
65
66	matty	10
67			/* FONT CACHE */
68			static FONTGLYPH fontcache[12][256];
69
70			/* Retrieve a glyph from the font cache */
71			FONTGLYPH *cache_get_font(uint8 font, uint16 character)
72	matty	9	{
73	matty	10	FONTGLYPH *glyph;
74	matty	9
75	matty	10	if ((font < NUM_ELEMENTS(fontcache))
76			&& (character < NUM_ELEMENTS(fontcache[0])))
77	matty	9	{
78	matty	10	glyph = &fontcache[font][character];
79	matty	9	if (glyph->pixmap != NULL)
80			return glyph;
81			}
82
83	matty	10	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	20	void cache_put_font(uint8 font, uint16 character, uint16 offset,
89			uint16 baseline, uint16 width, uint16 height, HGLYPH pixmap)
90	matty	9	{
91	matty	10	FONTGLYPH *glyph;
92	matty	9
93	matty	10	if ((font < NUM_ELEMENTS(fontcache))
94			&& (character < NUM_ELEMENTS(fontcache[0])))
95	matty	9	{
96	matty	10	glyph = &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	10	ERROR("put font %d:%d\n", font, character);
109	matty	9	}
110			}
111
112	matty	10
113			/* TEXT CACHE */
114			static DATABLOB textcache[256];
115
116			/* Retrieve a text item from the cache */
117			DATABLOB *cache_get_text(uint8 cache_id)
118	matty	9	{
119	matty	10	DATABLOB *text;
120	matty	9
121	matty	10	if (cache_id < NUM_ELEMENTS(textcache))
122	matty	9	{
123	matty	10	text = &textcache[cache_id];
124	matty	9	if (text->data != NULL)
125			return text;
126			}
127
128	matty	10	ERROR("get text %d\n", cache_id);
129	matty	9	return NULL;
130			}
131
132	matty	10	/* Store a text item in the cache */
133			void cache_put_text(uint8 cache_id, void *data, int length)
134	matty	9	{
135	matty	10	DATABLOB *text;
136	matty	9
137	matty	10	if (cache_id < NUM_ELEMENTS(textcache))
138	matty	9	{
139	matty	10	text = &textcache[cache_id];
140	matty	9	if (text->data != NULL)
141	matty	10	xfree(text->data);
142	matty	9
143	matty	10	text->data = xmalloc(length);
144	matty	9	text->size = length;
145			memcpy(text->data, data, length);
146			}
147			else
148			{
149	matty	10	ERROR("put text %d\n", cache_id);
150	matty	9	}
151			}
152	matty	10
153
154			/* DESKTOP CACHE */
155			static uint8 deskcache[0x38400];
156
157			/* Retrieve desktop data from the cache */
158	matty	16	uint8 *cache_get_desktop(uint32 offset, int cx, int cy)
159	matty	10	{
160	matty	16	int length = cx * cy;
161
162	matty	10	if ((offset + length) <= sizeof(deskcache))
163			{
164			return &deskcache[offset];
165			}
166
167			ERROR("get desktop %d:%d\n", offset, length);
168			return NULL;
169			}
170
171			/* Store desktop data in the cache */
172	matty	16	void cache_put_desktop(uint32 offset, int cx, int cy, int scanline, uint8 *data)
173	matty	10	{
174	matty	16	int length = cx * cy;
175
176	matty	10	if ((offset + length) <= sizeof(deskcache))
177			{
178	matty	16	while (cy--)
179			{
180			memcpy(&deskcache[offset], data, cx);
181			data += scanline;
182			offset += cx;
183			}
184	matty	10	}
185			else
186			{
187			ERROR("put desktop %d:%d\n", offset, length);
188			}
189			}
190