apps/plugins/grayscale.c

   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 #include "plugin.h"
  23
  24 #if defined(HAVE_LCD_BITMAP) && (LCD_DEPTH < 4)
  25 #include "gray.h"
  26
  27 PLUGIN_HEADER
  28
  29 /* variable button definitions */
  30 #if CONFIG_KEYPAD == RECORDER_PAD
  31 #define GRAYSCALE_SHIFT BUTTON_ON
  32 #define GRAYSCALE_UP BUTTON_UP
  33 #define GRAYSCALE_DOWN BUTTON_DOWN
  34 #define GRAYSCALE_LEFT BUTTON_LEFT
  35 #define GRAYSCALE_RIGHT BUTTON_RIGHT
  36 #define GRAYSCALE_OFF BUTTON_OFF
  37
  38 #elif CONFIG_KEYPAD == ONDIO_PAD
  39 #define GRAYSCALE_SHIFT BUTTON_MENU
  40 #define GRAYSCALE_UP BUTTON_UP
  41 #define GRAYSCALE_DOWN BUTTON_DOWN
  42 #define GRAYSCALE_LEFT BUTTON_LEFT
  43 #define GRAYSCALE_RIGHT BUTTON_RIGHT
  44 #define GRAYSCALE_OFF BUTTON_OFF
  45
  46 #elif CONFIG_KEYPAD == IRIVER_H100_PAD
  47 #define GRAYSCALE_SHIFT BUTTON_ON
  48 #define GRAYSCALE_UP BUTTON_UP
  49 #define GRAYSCALE_DOWN BUTTON_DOWN
  50 #define GRAYSCALE_LEFT BUTTON_LEFT
  51 #define GRAYSCALE_RIGHT BUTTON_RIGHT
  52 #define GRAYSCALE_OFF BUTTON_OFF
  53
  54 #define GRAYSCALE_RC_OFF BUTTON_RC_STOP
  55
  56 #elif (CONFIG_KEYPAD == IPOD_4G_PAD) || (CONFIG_KEYPAD == IPOD_3G_PAD) || \
  57       (CONFIG_KEYPAD == IPOD_1G2G_PAD)
  58 #define GRAYSCALE_SHIFT BUTTON_SELECT
  59 #define GRAYSCALE_UP BUTTON_SCROLL_BACK
  60 #define GRAYSCALE_DOWN BUTTON_SCROLL_FWD
  61 #define GRAYSCALE_LEFT BUTTON_LEFT
  62 #define GRAYSCALE_RIGHT BUTTON_RIGHT
  63 #define GRAYSCALE_OFF BUTTON_MENU
  64 #endif
  65
  66 #define GFX_HEIGHT (LCD_HEIGHT-8)
  67 #if LCD_WIDTH < 160
  68 #define GFX_GRAYTONE_WIDTH 86
  69 #define GFX_GRAYTONE_STEP 3
  70 #else
  71 #define GFX_GRAYTONE_WIDTH 128
  72 #define GFX_GRAYTONE_STEP 2
  73 #endif
  74 /******************************* Globals ***********************************/
  75
  76 static struct plugin_api* rb; /* global api struct pointer */
  77 static char pbuf[32];         /* global printf buffer */
  78 static unsigned char *gbuf;
  79 static size_t gbuf_size = 0;
  80
  81 /**************************** main function ********************************/
  82
  83 void cleanup(void *parameter)
  84 {
  85     (void)parameter;
  86
  87     gray_release(); /* switch off overlay and deinitialize */
  88     /* restore normal backlight setting */
  89     rb->backlight_set_timeout(rb->global_settings->backlight_timeout);
  90 }
  91
  92 /* this is only a demo of what the framework can do */
  93 int main(void)
  94 {
  95     int shades, time;
  96     int x, y, i;
  97     int button, scroll_amount;
  98     bool black_border = false;
  99
 100     static const unsigned char rockbox[] = {
 101     /* ...........................................
 102      * .####...###...###..#...#.####...###..#...#.
 103      * .#...#.#...#.#...#.#..#..#...#.#...#..#.#..
 104      * .####..#...#.#.....###...####..#...#...#...
 105      * .#..#..#...#.#...#.#..#..#...#.#...#..#.#..
 106      * .#...#..###...###..#...#.####...###..#...#.
 107      * ...........................................
 108      * 43 x 7 pixel, 1 bpp
 109      */
 110        0x00, 0x3E, 0x0A, 0x0A, 0x1A, 0x24, 0x00, 0x1C, 0x22, 0x22,
 111        0x22, 0x1C, 0x00, 0x1C, 0x22, 0x22, 0x22, 0x14, 0x00, 0x3E,
 112        0x08, 0x08, 0x14, 0x22, 0x00, 0x3E, 0x2A, 0x2A, 0x2A, 0x14,
 113        0x00, 0x1C, 0x22, 0x22, 0x22, 0x1C, 0x00, 0x22, 0x14, 0x08,
 114        0x14, 0x22, 0x00
 115     };
 116
 117     static const unsigned char showing[] = {
 118     /* .......................................
 119      * ..####.#...#..###..#...#.#.#...#..####.
 120      * .#.....#...#.#...#.#...#.#.##..#.#.....
 121      * ..###..#####.#...#.#.#.#.#.#.#.#.#..##.
 122      * .....#.#...#.#...#.#.#.#.#.#..##.#...#.
 123      * .####..#...#..###...#.#..#.#...#..####.
 124      * .......................................
 125      * 39 x 7 pixel, 1 bpp
 126      */
 127        0x00, 0x24, 0x2A, 0x2A, 0x2A, 0x12, 0x00, 0x3E, 0x08, 0x08,
 128        0x08, 0x3E, 0x00, 0x1C, 0x22, 0x22, 0x22, 0x1C, 0x00, 0x1E,
 129        0x20, 0x18, 0x20, 0x1E, 0x00, 0x3E, 0x00, 0x3E, 0x04, 0x08,
 130        0x10, 0x3E, 0x00, 0x1C, 0x22, 0x22, 0x2A, 0x3A, 0x00
 131     };
 132
 133     static const unsigned char grayscale_gray[] = {
 134     /* .......................................................
 135      * ..####.####...###..#...#..####..###...###..#.....#####.
 136      * .#.....#...#.#...#.#...#.#.....#...#.#...#.#.....#.....
 137      * .#..##.####..#####..#.#...###..#.....#####.#.....####..
 138      * .#...#.#..#..#...#...#.......#.#...#.#...#.#.....#.....
 139      * ..####.#...#.#...#...#...####...###..#...#.#####.#####.
 140      * .......................................................
 141      * 55 x 7 pixel, 8 bpp
 142      */
 143        110,110,110,110,110,110,110,110,110,110,110,110,110,110,110,110,
 144        110,110,110,110,110,110,110,110,110,110,110,110,110,110,110,110,
 145        110,110,110,110,110,110,110,110,110,110,110,110,110,110,110,110,
 146        110,110,110,110,110,110,110,
 147        120,120, 20, 20, 20, 20,120,222,222,222,222,120,120,120, 24, 24,
 148         24,120,120,226,120,120,120,226,120,120, 28, 28, 28, 28,120,120,
 149        230,230,230,120,120,120, 32, 32, 32,120,120,234,120,120,120,120,
 150        120, 36, 36, 36, 36, 36,120,
 151        130, 20,130,130,130,130,130,222,130,130,130,222,130, 24,130,130,
 152        130, 24,130,226,130,130,130,226,130, 28,130,130,130,130,130,230,
 153        130,130,130,230,130, 32,130,130,130, 32,130,234,130,130,130,130,
 154        130, 36,130,130,130,130,130,
 155        140, 20,140,140, 20, 20,140,222,222,222,222,140,140, 24, 24, 24,
 156         24, 24,140,140,226,140,226,140,140,140, 28, 28, 28,140,140,230,
 157        140,140,140,140,140, 32, 32, 32, 32, 32,140,234,140,140,140,140,
 158        140, 36, 36, 36, 36,140,140,
 159        130, 20,130,130,130, 20,130,222,130,130,222,130,130, 24,130,130,
 160        130, 24,130,130,130,226,130,130,130,130,130,130,130, 28,130,230,
 161        130,130,130,230,130, 32,130,130,130, 32,130,234,130,130,130,130,
 162        130, 36,130,130,130,130,130,
 163        120,120, 20, 20, 20, 20,120,222,120,120,120,222,120, 24,120,120,
 164        120, 24,120,120,120,226,120,120,120, 28, 28, 28, 28,120,120,120,
 165        230,230,230,120,120, 32,120,120,120, 32,120,234,234,234,234,234,
 166        120, 36, 36, 36, 36, 36,120,
 167        110,110,110,110,110,110,110,110,110,110,110,110,110,110,110,110,
 168        110,110,110,110,110,110,110,110,110,110,110,110,110,110,110,110,
 169        110,110,110,110,110,110,110,110,110,110,110,110,110,110,110,110,
 170        110,110,110,110,110,110,110
 171     };
 172
 173     if (rb->global_settings->backlight_timeout > 0)
 174         rb->backlight_set_timeout(1); /* keep the light on */
 175
 176     rb->lcd_setfont(FONT_SYSFIXED);   /* select default font */
 177
 178     /* get the remainder of the plugin buffer */
 179     gbuf = (unsigned char *) rb->plugin_get_buffer(&gbuf_size);
 180
 181     /* initialize the greyscale buffer:
 182        Archos: 112 pixels wide, 7 rows (56 pixels) high, (try to) reserve
 183        32 bitplanes for 33 shades of grey.
 184        H1x0: 160 pixels wide, 30 rows (120 pixels) high, (try to) reserve
 185        32 bitplanes for 33 shades of grey. */
 186     shades = gray_init(rb, gbuf, gbuf_size, true, LCD_WIDTH, GFX_HEIGHT,
 187                        32, 0, NULL) + 1;
 188
 189     /* place greyscale overlay 1 row down */
 190     gray_set_position(0, 8);
 191
 192     rb->snprintf(pbuf, sizeof(pbuf), "Shades: %d", shades);
 193     rb->lcd_puts(0, 0, pbuf);
 194     rb->lcd_update();
 195
 196 #ifdef HAVE_ADJUSTABLE_CPU_FREQ
 197     rb->cpu_boost(true);
 198 #endif
 199     gray_show(true);          /* switch on greyscale overlay */
 200
 201     time = *rb->current_tick; /* start time measurement */
 202
 203     gray_set_background(150);
 204     gray_clear_display();     /* fill everything with grey 150 */
 205
 206     /* draw a dark grey line star background */
 207     gray_set_foreground(80);
 208     for (y = 0; y < GFX_HEIGHT; y += 8)                   /* horizontal part */
 209     {
 210         gray_drawline(0, y, (LCD_WIDTH-1), (GFX_HEIGHT-1) - y); /*grey lines */
 211     }
 212     for (x = 10; x <= LCD_WIDTH; x += 10)                    /* vertical part */
 213     {
 214         gray_drawline(x, 0, (LCD_WIDTH-1) - x, (GFX_HEIGHT-1)); /*grey lines */
 215     }
 216
 217     gray_set_foreground(0);
 218     gray_drawrect(0, 0, LCD_WIDTH, GFX_HEIGHT);   /* black border */
 219
 220     /* draw grey tones */
 221     for (i = 0; i < GFX_GRAYTONE_WIDTH; i++)
 222     {
 223         x = ((LCD_WIDTH-GFX_GRAYTONE_WIDTH)/2) + i;
 224         gray_set_foreground(GFX_GRAYTONE_STEP * i);
 225         /* vertical lines */
 226         gray_vline(x, (GFX_HEIGHT/8), (GFX_HEIGHT-GFX_HEIGHT/8-1));
 227     }
 228
 229     gray_set_drawmode(DRMODE_COMPLEMENT);
 230     /* invert rectangle (lower half) */
 231     gray_fillrect((LCD_WIDTH-GFX_GRAYTONE_WIDTH)/2, (GFX_HEIGHT/2+1),
 232                   GFX_GRAYTONE_WIDTH, (GFX_HEIGHT/2-GFX_HEIGHT/8-1));
 233     /* invert a line */
 234     gray_hline((LCD_WIDTH-GFX_GRAYTONE_WIDTH)/2,
 235                (LCD_WIDTH+GFX_GRAYTONE_WIDTH)/2, (GFX_HEIGHT/2-1));
 236
 237     /* show bitmaps (1 bit and 8 bit) */
 238     /* opaque */
 239     gray_set_drawinfo(DRMODE_SOLID, 255, 100);
 240     gray_mono_bitmap(rockbox,
 241                      MAX((LCD_WIDTH/2-47), ((LCD_WIDTH-GFX_GRAYTONE_WIDTH)/2)),
 242                      (5*GFX_HEIGHT/16-4), 43, 7);
 243     /* transparent */
 244     gray_set_drawinfo(DRMODE_FG, 0, 100);
 245     gray_mono_bitmap(showing, (LCD_WIDTH/2+4) , (5*GFX_HEIGHT/16-4), 39, 7);
 246     /* greyscale */
 247     gray_gray_bitmap(grayscale_gray, ((LCD_WIDTH-55)/2), (11*GFX_HEIGHT/16-4),
 248                      55, 7);
 249
 250     gray_update();
 251
 252     time = *rb->current_tick - time;  /* end time measurement */
 253
 254     rb->snprintf(pbuf, sizeof(pbuf), "Shades: %d, %d.%02ds", shades,
 255                  time / 100, time % 100);
 256     rb->lcd_puts(0, 0, pbuf);
 257     gray_deferred_lcd_update();       /* schedule an lcd_update() */
 258 #ifdef HAVE_ADJUSTABLE_CPU_FREQ
 259     rb->cpu_boost(false);
 260 #endif
 261
 262     /* drawing is now finished, play around with scrolling
 263      * until you press OFF or connect USB
 264      */
 265     gray_set_background(255);
 266     while (true)
 267     {
 268         scroll_amount = 1;
 269
 270         button = rb->button_get(true);
 271
 272         if (rb->default_event_handler_ex(button, cleanup, NULL)
 273             == SYS_USB_CONNECTED)
 274             return PLUGIN_USB_CONNECTED;
 275
 276         if (button & GRAYSCALE_SHIFT)
 277         {
 278             if (!black_border)
 279             {
 280                 gray_set_background(0);
 281                 black_border = true;
 282             }
 283         }
 284         else
 285         {
 286             if (black_border)
 287             {
 288                 gray_set_background(255);
 289                 black_border = false;
 290             }
 291         }
 292
 293         if (button & BUTTON_REPEAT)
 294             scroll_amount = 4;
 295
 296         switch (button & ~(GRAYSCALE_SHIFT | BUTTON_REPEAT))
 297         {
 298             case GRAYSCALE_LEFT:
 299
 300                 gray_scroll_left(scroll_amount);  /* scroll left */
 301                 gray_update();
 302                 break;
 303
 304             case GRAYSCALE_RIGHT:
 305
 306                 gray_scroll_right(scroll_amount); /* scroll right */
 307                 gray_update();
 308                 break;
 309
 310             case GRAYSCALE_UP:
 311
 312                 gray_scroll_up(scroll_amount);    /* scroll up */
 313                 gray_update();
 314                 break;
 315
 316             case GRAYSCALE_DOWN:
 317
 318                 gray_scroll_down(scroll_amount);  /* scroll down */
 319                 gray_update();
 320                 break;
 321 #ifdef GRAYSCALE_RC_OFF
 322             case GRAYSCALE_RC_OFF:
 323 #endif
 324             case GRAYSCALE_OFF:
 325
 326                 cleanup(NULL);
 327                 return PLUGIN_OK;
 328         }
 329     }
 330 }
 331
 332 /*************************** Plugin entry point ****************************/
 333
 334 enum plugin_status plugin_start(struct plugin_api* api, void* parameter)
 335 {
 336     rb = api; /* copy to global api pointer */
 337     (void)parameter;
 338
 339     return main();
 340 }
 341
 342 #endif /* #ifdef HAVE_LCD_BITMAP */
 343