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-rw-r--r--apps/plugins/grayscale.c259
1 files changed, 259 insertions, 0 deletions
diff --git a/apps/plugins/grayscale.c b/apps/plugins/grayscale.c
new file mode 100644
index 0000000000..0231541761
--- /dev/null
+++ b/apps/plugins/grayscale.c
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1/***************************************************************************
2* __________ __ ___.
3* Open \______ \ ____ ____ | | _\_ |__ _______ ___
4* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
5* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
6* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
7* \/ \/ \/ \/ \/
8* $Id$
9*
10* Grayscale demo plugin
11*
12* Copyright (C) 2004 Jens Arnold
13*
14* All files in this archive are subject to the GNU General Public License.
15* See the file COPYING in the source tree root for full license agreement.
16*
17* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
18* KIND, either express or implied.
19*
20****************************************************************************/
21
22#ifndef SIMULATOR /* not for simulator by now */
23#include "plugin.h"
24
25#ifdef HAVE_LCD_BITMAP /* and also not for the Player */
26#include "gray.h"
27
28/******************************* Globals ***********************************/
29
30static struct plugin_api* rb; /* global api struct pointer */
31static char pbuf[32]; /* global printf buffer */
32static unsigned char *gbuf;
33static unsigned int gbuf_size = 0;
34
35/**************************** main function ********************************/
36
37/* this is only a demo of what the framework can do */
38int main(void)
39{
40 int shades, time;
41 int x, y, i;
42 int button, scroll_amount;
43 bool black_border;
44
45 static unsigned char rockbox[] = {
46 /* ...........................................
47 * .####...###...###..#...#.####...###..#...#.
48 * .#...#.#...#.#...#.#..#..#...#.#...#..#.#..
49 * .####..#...#.#.....###...####..#...#...#...
50 * .#..#..#...#.#...#.#..#..#...#.#...#..#.#..
51 * .#...#..###...###..#...#.####...###..#...#.
52 * ...........................................
53 * 43 x 7 pixel, 1 bpp
54 */
55 0x00, 0x3E, 0x0A, 0x0A, 0x1A, 0x24, 0x00, 0x1C, 0x22, 0x22,
56 0x22, 0x1C, 0x00, 0x1C, 0x22, 0x22, 0x22, 0x14, 0x00, 0x3E,
57 0x08, 0x08, 0x14, 0x22, 0x00, 0x3E, 0x2A, 0x2A, 0x2A, 0x14,
58 0x00, 0x1C, 0x22, 0x22, 0x22, 0x1C, 0x00, 0x22, 0x14, 0x08,
59 0x14, 0x22, 0x00
60 };
61
62 static unsigned char showing[] = {
63 /* .......................................
64 * ..####.#...#..###..#...#.#.#...#..####.
65 * .#.....#...#.#...#.#...#.#.##..#.#.....
66 * ..###..#####.#...#.#.#.#.#.#.#.#.#..##.
67 * .....#.#...#.#...#.#.#.#.#.#..##.#...#.
68 * .####..#...#..###...#.#..#.#...#..####.
69 * .......................................
70 * 39 x 7 pixel, 1 bpp
71 */
72 0x00, 0x24, 0x2A, 0x2A, 0x2A, 0x12, 0x00, 0x3E, 0x08, 0x08,
73 0x08, 0x3E, 0x00, 0x1C, 0x22, 0x22, 0x22, 0x1C, 0x00, 0x1E,
74 0x20, 0x18, 0x20, 0x1E, 0x00, 0x3E, 0x00, 0x3E, 0x04, 0x08,
75 0x10, 0x3E, 0x00, 0x1C, 0x22, 0x22, 0x2A, 0x3A, 0x00
76 };
77
78 static unsigned char grayscale_gray[] = {
79 /* .......................................................
80 * ..####.####...###..#...#..####..###...###..#.....#####.
81 * .#.....#...#.#...#.#...#.#.....#...#.#...#.#.....#.....
82 * .#..##.####..#####..#.#...###..#.....#####.#.....####..
83 * .#...#.#..#..#...#...#.......#.#...#.#...#.#.....#.....
84 * ..####.#...#.#...#...#...####...###..#...#.#####.#####.
85 * .......................................................
86 * 55 x 7 pixel, 8 bpp
87 */
88 110,110,110,110,110,110,110,110,110,110,110,110,110,110,110,110,
89 110,110,110,110,110,110,110,110,110,110,110,110,110,110,110,110,
90 110,110,110,110,110,110,110,110,110,110,110,110,110,110,110,110,
91 110,110,110,110,110,110,110,
92 120,120, 20, 20, 20, 20,120,222,222,222,222,120,120,120, 24, 24,
93 24,120,120,226,120,120,120,226,120,120, 28, 28, 28, 28,120,120,
94 230,230,230,120,120,120, 32, 32, 32,120,120,234,120,120,120,120,
95 120, 36, 36, 36, 36, 36,120,
96 130, 20,130,130,130,130,130,222,130,130,130,222,130, 24,130,130,
97 130, 24,130,226,130,130,130,226,130, 28,130,130,130,130,130,230,
98 130,130,130,230,130, 32,130,130,130, 32,130,234,130,130,130,130,
99 130, 36,130,130,130,130,130,
100 140, 20,140,140, 20, 20,140,222,222,222,222,140,140, 24, 24, 24,
101 24, 24,140,140,226,140,226,140,140,140, 28, 28, 28,140,140,230,
102 140,140,140,140,140, 32, 32, 32, 32, 32,140,234,140,140,140,140,
103 140, 36, 36, 36, 36,140,140,
104 130, 20,130,130,130, 20,130,222,130,130,222,130,130, 24,130,130,
105 130, 24,130,130,130,226,130,130,130,130,130,130,130, 28,130,230,
106 130,130,130,230,130, 32,130,130,130, 32,130,234,130,130,130,130,
107 130, 36,130,130,130,130,130,
108 120,120, 20, 20, 20, 20,120,222,120,120,120,222,120, 24,120,120,
109 120, 24,120,120,120,226,120,120,120, 28, 28, 28, 28,120,120,120,
110 230,230,230,120,120, 32,120,120,120, 32,120,234,234,234,234,234,
111 120, 36, 36, 36, 36, 36,120,
112 110,110,110,110,110,110,110,110,110,110,110,110,110,110,110,110,
113 110,110,110,110,110,110,110,110,110,110,110,110,110,110,110,110,
114 110,110,110,110,110,110,110,110,110,110,110,110,110,110,110,110,
115 110,110,110,110,110,110,110
116 };
117
118 if (rb->global_settings->backlight_timeout > 0)
119 rb->backlight_set_timeout(1); /* keep the light on */
120
121 rb->lcd_setfont(FONT_SYSFIXED); /* select default font */
122
123 /* get the remainder of the plugin buffer */
124 gbuf = (unsigned char *) rb->plugin_get_buffer(&gbuf_size);
125
126 /* initialize the grayscale buffer:
127 * 112 pixels wide, 7 rows (56 pixels) high, (try to) reserve
128 * 32 bitplanes for 33 shades of gray. (uses 25268 bytes)*/
129 shades = gray_init_buffer(gbuf, gbuf_size, 112, 7, 32) + 1;
130
131 /* place grayscale overlay 1 row down */
132 gray_position_display(0, 1);
133
134 rb->snprintf(pbuf, sizeof(pbuf), "Shades: %d", shades);
135 rb->lcd_puts(0, 0, pbuf);
136 rb->lcd_update();
137
138 gray_show_display(true); /* switch on grayscale overlay */
139
140 time = *rb->current_tick; /* start time measurement */
141
142 gray_fillrect(0, 0, 111, 55, 150); /* fill everything with gray 150 */
143
144 /* draw a dark gray line star background */
145 for (y = 0; y < 56; y += 8) /* horizontal part */
146 {
147 gray_drawline(0, y, 111, 55 - y, 80); /* gray lines */
148 }
149 for (x = 10; x < 112; x += 10) /* vertical part */
150 {
151 gray_drawline(x, 0, 111 - x, 55, 80); /* gray lines */
152 }
153
154 gray_drawrect(0, 0, 111, 55, 0); /* black border */
155
156 /* draw gray tones */
157 for (i = 0; i < 86; i++)
158 {
159 x = 13 + i;
160 gray_fillrect(x, 6, x, 49, 3 * i); /* gray rectangles */
161 }
162
163 gray_invertrect(13, 29, 98, 49); /* invert rectangle (lower half) */
164 gray_invertline(13, 27, 98, 27); /* invert a line */
165
166 /* show bitmaps (1 bit and 8 bit) */
167 gray_drawbitmap(rockbox, 14, 13, 43, 7, 43, true, 255, 100); /* opaque */
168 gray_drawbitmap(showing, 58, 13, 39, 7, 39, false, 0, 0); /* transparent */
169 gray_drawgraymap(grayscale_gray, 28, 35, 55, 7, 55);
170
171 time = *rb->current_tick - time; /* end time measurement */
172
173 rb->snprintf(pbuf, sizeof(pbuf), "Shades: %d, %d.%02ds", shades,
174 time / 100, time % 100);
175 rb->lcd_puts(0, 0, pbuf);
176 gray_deferred_update(); /* schedule an lcd_update() */
177
178 /* drawing is now finished, play around with scrolling
179 * until you press OFF or connect USB
180 */
181 while (true)
182 {
183 scroll_amount = 1;
184 black_border = false;
185
186 button = rb->button_get(true);
187
188 if (button == SYS_USB_CONNECTED)
189 {
190 gray_release_buffer(); /* switch off overlay and deinitialize */
191 /* restore normal backlight setting */
192 rb->backlight_set_timeout(rb->global_settings->backlight_timeout);
193 return PLUGIN_USB_CONNECTED;
194 }
195
196 if (button & BUTTON_ON)
197 black_border = true;
198
199 if (button & BUTTON_REPEAT)
200 scroll_amount = 4;
201
202 switch(button & ~(BUTTON_ON | BUTTON_REPEAT))
203 {
204 case BUTTON_LEFT:
205
206 gray_scroll_left(scroll_amount, black_border); /* scroll left */
207 break;
208
209 case BUTTON_RIGHT:
210
211 gray_scroll_right(scroll_amount, black_border); /* scroll right */
212 break;
213
214 case BUTTON_UP:
215
216 gray_scroll_up(scroll_amount, black_border); /* scroll up */
217 break;
218
219 case BUTTON_DOWN:
220
221 gray_scroll_down(scroll_amount, black_border); /* scroll down */
222 break;
223
224 case BUTTON_OFF:
225
226 gray_release_buffer(); /* switch off overlay and deinitialize */
227 /* restore normal backlight setting */
228 rb->backlight_set_timeout(rb->global_settings->backlight_timeout);
229 return PLUGIN_OK;
230 }
231 }
232}
233
234/*************************** Plugin entry point ****************************/
235
236enum plugin_status plugin_start(struct plugin_api* api, void* parameter)
237{
238 int ret;
239 /* this macro should be called as the first thing you do in the plugin.
240 it test that the api version and model the plugin was compiled for
241 matches the machine it is running on */
242 TEST_PLUGIN_API(api);
243
244 rb = api; // copy to global api pointer
245 (void)parameter;
246
247 /* This plugin uses the grayscale framework, so initialize */
248 gray_init(api);
249
250 ret = main();
251
252 if (ret == PLUGIN_USB_CONNECTED)
253 rb->usb_screen();
254 return ret;
255}
256
257#endif // #ifdef HAVE_LCD_BITMAP
258#endif // #ifndef SIMULATOR
259
generated by cgit v1.2.3 (git 2.39.1) at 2024-09-22 21:33:16 +0000