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authorJens Arnold <amiconn@rockbox.org>2005-07-25 20:50:34 +0000
committerJens Arnold <amiconn@rockbox.org>2005-07-25 20:50:34 +0000
commitc20a00ef3e35b15acf422a2e7f6716abde840c24 (patch)
tree903cf122a1203360022dad4a06cc24b7ea805463 /apps/plugins/lib/gray_screendump.c
parent12a4ed383f21b65a5a244f47fe1bc9f13d4f63bb (diff)
downloadrockbox-c20a00ef3e35b15acf422a2e7f6716abde840c24.tar.gz
rockbox-c20a00ef3e35b15acf422a2e7f6716abde840c24.zip
Complete rework of the grayscale library: (1) Implemented the new rockbox graphics api. (2) Added buffered mode, and implemented most drawing functions for buffered mode only. Buffered mode will ease implementation of animated graphics. Some functions are additionally provided as unbuffered versions (drawing grayscale bitmaps, scrolling) since unbuffered mode is better suited for non-animated graphics (JPEG viewer, mandelbrot) and saves some RAM, which is important on Archos. (3) Put all functions in a couple of source files, no more one-function-per-files. This became possible since sectioned compilation for the plugin library and appropriate linking for the pluginswas introduced, otherwise the binaries would be bloated by unused functions.
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@7241 a1c6a512-1295-4272-9138-f99709370657
Diffstat (limited to 'apps/plugins/lib/gray_screendump.c')
-rw-r--r--apps/plugins/lib/gray_screendump.c141
1 files changed, 0 insertions, 141 deletions
diff --git a/apps/plugins/lib/gray_screendump.c b/apps/plugins/lib/gray_screendump.c
deleted file mode 100644
index fdc88b8547..0000000000
--- a/apps/plugins/lib/gray_screendump.c
+++ /dev/null
@@ -1,141 +0,0 @@
1/***************************************************************************
2* __________ __ ___.
3* Open \______ \ ____ ____ | | _\_ |__ _______ ___
4* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
5* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
6* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
7* \/ \/ \/ \/ \/
8* $Id$
9*
10* Grayscale framework
11* gray_screendump() function
12*
13* This is a generic framework to use grayscale display within Rockbox
14* plugins. It obviously does not work for the player.
15*
16* Copyright (C) 2004 Jens Arnold
17*
18* All files in this archive are subject to the GNU General Public License.
19* See the file COPYING in the source tree root for full license agreement.
20*
21* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
22* KIND, either express or implied.
23*
24****************************************************************************/
25
26#ifndef SIMULATOR /* not for simulator by now */
27#include "plugin.h"
28
29#ifdef HAVE_LCD_BITMAP /* and also not for the Player */
30#include "gray.h"
31
32static const unsigned char bmpheader[] =
33{
34 0x42, 0x4d, 0xba, 0x1c, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xba, 0x00,
35 0x00, 0x00, 0x28, 0x00, 0x00, 0x00, 0x70, 0x00, 0x00, 0x00, 0x40, 0x00,
36 0x00, 0x00, 0x01, 0x00, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x1c,
37 0x00, 0x00, 0xc4, 0x0e, 0x00, 0x00, 0xc4, 0x0e, 0x00, 0x00, 0x21, 0x00,
38 0x00, 0x00, 0x21, 0x00, 0x00, 0x00
39};
40
41static unsigned char linebuf[LCD_WIDTH];
42
43/*---------------------------------------------------------------------------
44 Save the current display content (b&w and grayscale overlay) to an 8-bit
45 BMP file in the root directory
46 ----------------------------------------------------------------------------
47 *
48 * This one is rather slow if used with larger bit depths, but it's intended
49 * primary use is for documenting the grayscale plugins. A much faster version
50 * would be possible, but would take more than twice the RAM
51 */
52void gray_screendump(void)
53{
54 int fh, i, bright;
55 int x, y, by, mask;
56 int gx, gby;
57
58 char filename[MAX_PATH];
59 struct tm *tm = _gray_rb->get_time();
60
61 unsigned char *lcdptr, *grayptr, *grayptr2;
62
63 _gray_rb->snprintf(filename, MAX_PATH,
64 "/graydump %04d-%02d-%02d %02d-%02d-%02d.bmp",
65 tm->tm_year + 1900, tm->tm_mon + 1, tm->tm_mday,
66 tm->tm_hour, tm->tm_min, tm->tm_sec);
67 fh = _gray_rb->creat(filename, O_WRONLY);
68
69 if (fh < 0)
70 return;
71
72 _gray_rb->write(fh, bmpheader, sizeof(bmpheader)); /* write header */
73
74 /* build clut, always 33 entries */
75
76 linebuf[3] = 0;
77
78 for (i = 0; i < 33; i++)
79 {
80 bright = MIN(i, _graybuf->depth);
81 linebuf[0] = linebuf[2] = MULU16(0x90, bright) / _graybuf->depth;
82 linebuf[1] = MULU16(0xee, bright) / _graybuf->depth;
83 _gray_rb->write(fh, linebuf, 4);
84 }
85
86 /* 8-bit BMP image goes bottom -> top */
87
88 for (y = LCD_HEIGHT - 1; y >= 0; y--)
89 {
90 _gray_rb->memset(linebuf, 32, sizeof(linebuf)); /* max. brightness */
91
92 mask = 1 << (y & 7);
93 by = y / 8;
94 lcdptr = _gray_rb->lcd_framebuffer + MULU16(LCD_WIDTH, by);
95 gby = by - _graybuf->by;
96
97 if ((_graybuf->flags & _GRAY_RUNNING)
98 && (unsigned) gby < (unsigned) _graybuf->bheight)
99 {
100 /* line contains grayscale (and maybe b&w) graphics */
101 grayptr = _graybuf->data + MULU16(_graybuf->width, gby);
102
103 for (x = 0; x < LCD_WIDTH; x++)
104 {
105 if (*lcdptr++ & mask)
106 linebuf[x] = 0;
107
108 gx = x - _graybuf->x;
109
110 if ((unsigned) gx < (unsigned) _graybuf->width)
111 {
112 bright = 0;
113 grayptr2 = grayptr + gx;
114
115 for (i = 0; i < _graybuf->depth; i++)
116 {
117 if (!(*grayptr2 & mask))
118 bright++;
119 grayptr2 += _graybuf->plane_size;
120 }
121 linebuf[x] = bright;
122 }
123 }
124 }
125 else
126 {
127 /* line contains only b&w graphics */
128 for (x = 0; x < LCD_WIDTH; x++)
129 if (*lcdptr++ & mask)
130 linebuf[x] = 0;
131 }
132
133 _gray_rb->write(fh, linebuf, sizeof(linebuf));
134 }
135
136 _gray_rb->close(fh);
137}
138
139#endif // #ifdef HAVE_LCD_BITMAP
140#endif // #ifndef SIMULATOR
141