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_3G_PAD) || (CONFIG_KEYPAD == IPOD_4G_PAD)
  57 #define GRAYSCALE_SHIFT BUTTON_SELECT
  58 #define GRAYSCALE_UP BUTTON_SCROLL_BACK
  59 #define GRAYSCALE_DOWN BUTTON_SCROLL_FWD
  60 #define GRAYSCALE_LEFT BUTTON_LEFT
  61 #define GRAYSCALE_RIGHT BUTTON_RIGHT
  62 #define GRAYSCALE_OFF BUTTON_MENU
  63 #endif
  64
  65 #define GFX_HEIGHT (LCD_HEIGHT-8)
  66 #if LCD_WIDTH < 160
  67 #define GFX_GRAYTONE_WIDTH 86
  68 #define GFX_GRAYTONE_STEP 3
  69 #else
  70 #define GFX_GRAYTONE_WIDTH 128
  71 #define GFX_GRAYTONE_STEP 2
  72 #endif
  73 /******************************* Globals ***********************************/
  74
  75 static struct plugin_api* rb; /* global api struct pointer */
  76 static char pbuf[32];         /* global printf buffer */
  77 static unsigned char *gbuf;
  78 static unsigned int gbuf_size = 0;
  79
  80 /**************************** main function ********************************/
  81
  82 void cleanup(void *parameter)
  83 {
  84     (void)parameter;
  85
  86     gray_release(); /* switch off overlay and deinitialize */
  87     /* restore normal backlight setting */
  88     rb->backlight_set_timeout(rb->global_settings->backlight_timeout);
  89 }
  90
  91 /* this is only a demo of what the framework can do */
  92 int main(void)
  93 {
  94     int shades, time;
  95     int x, y, i;
  96     int button, scroll_amount;
  97     bool black_border = false;
  98
  99     static const unsigned char rockbox[] = {
 100     /* ...........................................
 101      * .####...###...###..#...#.####...###..#...#.
 102      * .#...#.#...#.#...#.#..#..#...#.#...#..#.#..
 103      * .####..#...#.#.....###...####..#...#...#...
 104      * .#..#..#...#.#...#.#..#..#...#.#...#..#.#..
 105      * .#...#..###...###..#...#.####...###..#...#.
 106      * ...........................................
 107      * 43 x 7 pixel, 1 bpp
 108      */
 109        0x00, 0x3E, 0x0A, 0x0A, 0x1A, 0x24, 0x00, 0x1C, 0x22, 0x22,
 110        0x22, 0x1C, 0x00, 0x1C, 0x22, 0x22, 0x22, 0x14, 0x00, 0x3E,
 111        0x08, 0x08, 0x14, 0x22, 0x00, 0x3E, 0x2A, 0x2A, 0x2A, 0x14,
 112        0x00, 0x1C, 0x22, 0x22, 0x22, 0x1C, 0x00, 0x22, 0x14, 0x08,
 113        0x14, 0x22, 0x00
 114     };
 115
 116     static const unsigned char showing[] = {
 117     /* .......................................
 118      * ..####.#...#..###..#...#.#.#...#..####.
 119      * .#.....#...#.#...#.#...#.#.##..#.#.....
 120      * ..###..#####.#...#.#.#.#.#.#.#.#.#..##.
 121      * .....#.#...#.#...#.#.#.#.#.#..##.#...#.
 122      * .####..#...#..###...#.#..#.#...#..####.
 123      * .......................................
 124      * 39 x 7 pixel, 1 bpp
 125      */
 126        0x00, 0x24, 0x2A, 0x2A, 0x2A, 0x12, 0x00, 0x3E, 0x08, 0x08,
 127        0x08, 0x3E, 0x00, 0x1C, 0x22, 0x22, 0x22, 0x1C, 0x00, 0x1E,
 128        0x20, 0x18, 0x20, 0x1E, 0x00, 0x3E, 0x00, 0x3E, 0x04, 0x08,
 129        0x10, 0x3E, 0x00, 0x1C, 0x22, 0x22, 0x2A, 0x3A, 0x00
 130     };
 131
 132     static const unsigned char grayscale_gray[] = {
 133     /* .......................................................
 134      * ..####.####...###..#...#..####..###...###..#.....#####.
 135      * .#.....#...#.#...#.#...#.#.....#...#.#...#.#.....#.....
 136      * .#..##.####..#####..#.#...###..#.....#####.#.....####..
 137      * .#...#.#..#..#...#...#.......#.#...#.#...#.#.....#.....
 138      * ..####.#...#.#...#...#...####...###..#...#.#####.#####.
 139      * .......................................................
 140      * 55 x 7 pixel, 8 bpp
 141      */
 142        110,110,110,110,110,110,110,110,110,110,110,110,110,110,110,110,
 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,
 146        120,120, 20, 20, 20, 20,120,222,222,222,222,120,120,120, 24, 24,
 147         24,120,120,226,120,120,120,226,120,120, 28, 28, 28, 28,120,120,
 148        230,230,230,120,120,120, 32, 32, 32,120,120,234,120,120,120,120,
 149        120, 36, 36, 36, 36, 36,120,
 150        130, 20,130,130,130,130,130,222,130,130,130,222,130, 24,130,130,
 151        130, 24,130,226,130,130,130,226,130, 28,130,130,130,130,130,230,
 152        130,130,130,230,130, 32,130,130,130, 32,130,234,130,130,130,130,
 153        130, 36,130,130,130,130,130,
 154        140, 20,140,140, 20, 20,140,222,222,222,222,140,140, 24, 24, 24,
 155         24, 24,140,140,226,140,226,140,140,140, 28, 28, 28,140,140,230,
 156        140,140,140,140,140, 32, 32, 32, 32, 32,140,234,140,140,140,140,
 157        140, 36, 36, 36, 36,140,140,
 158        130, 20,130,130,130, 20,130,222,130,130,222,130,130, 24,130,130,
 159        130, 24,130,130,130,226,130,130,130,130,130,130,130, 28,130,230,
 160        130,130,130,230,130, 32,130,130,130, 32,130,234,130,130,130,130,
 161        130, 36,130,130,130,130,130,
 162        120,120, 20, 20, 20, 20,120,222,120,120,120,222,120, 24,120,120,
 163        120, 24,120,120,120,226,120,120,120, 28, 28, 28, 28,120,120,120,
 164        230,230,230,120,120, 32,120,120,120, 32,120,234,234,234,234,234,
 165        120, 36, 36, 36, 36, 36,120,
 166        110,110,110,110,110,110,110,110,110,110,110,110,110,110,110,110,
 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
 170     };
 171
 172     if (rb->global_settings->backlight_timeout > 0)
 173         rb->backlight_set_timeout(1); /* keep the light on */
 174
 175     rb->lcd_setfont(FONT_SYSFIXED);   /* select default font */
 176
 177     /* get the remainder of the plugin buffer */
 178     gbuf = (unsigned char *) rb->plugin_get_buffer(&gbuf_size);
 179
 180     /* initialize the greyscale buffer:
 181        Archos: 112 pixels wide, 7 rows (56 pixels) high, (try to) reserve
 182        32 bitplanes for 33 shades of grey.
 183        H1x0: 160 pixels wide, 30 rows (120 pixels) high, (try to) reserve
 184        32 bitplanes for 33 shades of grey. */
 185     shades = gray_init(rb, gbuf, gbuf_size, true, LCD_WIDTH, GFX_HEIGHT,
 186                        32, 0, NULL) + 1;
 187
 188     /* place greyscale overlay 1 row down */
 189     gray_set_position(0, 8);
 190
 191     rb->snprintf(pbuf, sizeof(pbuf), "Shades: %d", shades);
 192     rb->lcd_puts(0, 0, pbuf);
 193     rb->lcd_update();
 194
 195 #ifdef HAVE_ADJUSTABLE_CPU_FREQ
 196     rb->cpu_boost(true);
 197 #endif
 198     gray_show(true);          /* switch on greyscale overlay */
 199
 200     time = *rb->current_tick; /* start time measurement */
 201
 202     gray_set_background(150);
 203     gray_clear_display();     /* fill everything with grey 150 */
 204
 205     /* draw a dark grey line star background */
 206     gray_set_foreground(80);
 207     for (y = 0; y < GFX_HEIGHT; y += 8)                   /* horizontal part */
 208     {
 209         gray_drawline(0, y, (LCD_WIDTH-1), (GFX_HEIGHT-1) - y); /*grey lines */
 210     }
 211     for (x = 10; x <= LCD_WIDTH; x += 10)                    /* vertical part */
 212     {
 213         gray_drawline(x, 0, (LCD_WIDTH-1) - x, (GFX_HEIGHT-1)); /*grey lines */
 214     }
 215
 216     gray_set_foreground(0);
 217     gray_drawrect(0, 0, LCD_WIDTH, GFX_HEIGHT);   /* black border */
 218
 219     /* draw grey tones */
 220     for (i = 0; i < GFX_GRAYTONE_WIDTH; i++)
 221     {
 222         x = ((LCD_WIDTH-GFX_GRAYTONE_WIDTH)/2) + i;
 223         gray_set_foreground(GFX_GRAYTONE_STEP * i);
 224         /* vertical lines */
 225         gray_vline(x, (GFX_HEIGHT/8), (GFX_HEIGHT-GFX_HEIGHT/8-1));
 226     }
 227
 228     gray_set_drawmode(DRMODE_COMPLEMENT);
 229     /* invert rectangle (lower half) */
 230     gray_fillrect((LCD_WIDTH-GFX_GRAYTONE_WIDTH)/2, (GFX_HEIGHT/2+1),
 231                   GFX_GRAYTONE_WIDTH, (GFX_HEIGHT/2-GFX_HEIGHT/8-1));
 232     /* invert a line */
 233     gray_hline((LCD_WIDTH-GFX_GRAYTONE_WIDTH)/2,
 234                (LCD_WIDTH+GFX_GRAYTONE_WIDTH)/2, (GFX_HEIGHT/2-1));
 235
 236     /* show bitmaps (1 bit and 8 bit) */
 237     /* opaque */
 238     gray_set_drawinfo(DRMODE_SOLID, 255, 100);
 239     gray_mono_bitmap(rockbox,
 240                      MAX((LCD_WIDTH/2-47), ((LCD_WIDTH-GFX_GRAYTONE_WIDTH)/2)),
 241                      (5*GFX_HEIGHT/16-4), 43, 7);
 242     /* transparent */
 243     gray_set_drawinfo(DRMODE_FG, 0, 100);
 244     gray_mono_bitmap(showing, (LCD_WIDTH/2+4) , (5*GFX_HEIGHT/16-4), 39, 7);
 245     /* greyscale */
 246     gray_gray_bitmap(grayscale_gray, ((LCD_WIDTH-55)/2), (11*GFX_HEIGHT/16-4),
 247                      55, 7);
 248
 249     gray_update();
 250
 251     time = *rb->current_tick - time;  /* end time measurement */
 252
 253     rb->snprintf(pbuf, sizeof(pbuf), "Shades: %d, %d.%02ds", shades,
 254                  time / 100, time % 100);
 255     rb->lcd_puts(0, 0, pbuf);
 256     gray_deferred_lcd_update();       /* schedule an lcd_update() */
 257 #ifdef HAVE_ADJUSTABLE_CPU_FREQ
 258     rb->cpu_boost(false);
 259 #endif
 260
 261     /* drawing is now finished, play around with scrolling
 262      * until you press OFF or connect USB
 263      */
 264     gray_set_background(255);
 265     while (true)
 266     {
 267         scroll_amount = 1;
 268
 269         button = rb->button_get(true);
 270
 271         if (rb->default_event_handler_ex(button, cleanup, NULL)
 272             == SYS_USB_CONNECTED)
 273             return PLUGIN_USB_CONNECTED;
 274
 275         if (button & GRAYSCALE_SHIFT)
 276         {
 277             if (!black_border)
 278             {
 279                 gray_set_background(0);
 280                 black_border = true;
 281             }
 282         }
 283         else
 284         {
 285             if (black_border)
 286             {
 287                 gray_set_background(255);
 288                 black_border = false;
 289             }
 290         }
 291
 292         if (button & BUTTON_REPEAT)
 293             scroll_amount = 4;
 294
 295         switch (button & ~(GRAYSCALE_SHIFT | BUTTON_REPEAT))
 296         {
 297             case GRAYSCALE_LEFT:
 298
 299                 gray_scroll_left(scroll_amount);  /* scroll left */
 300                 gray_update();
 301                 break;
 302
 303             case GRAYSCALE_RIGHT:
 304
 305                 gray_scroll_right(scroll_amount); /* scroll right */
 306                 gray_update();
 307                 break;
 308
 309             case GRAYSCALE_UP:
 310
 311                 gray_scroll_up(scroll_amount);    /* scroll up */
 312                 gray_update();
 313                 break;
 314
 315             case GRAYSCALE_DOWN:
 316
 317                 gray_scroll_down(scroll_amount);  /* scroll down */
 318                 gray_update();
 319                 break;
 320 #ifdef GRAYSCALE_RC_OFF
 321             case GRAYSCALE_RC_OFF:
 322 #endif
 323             case GRAYSCALE_OFF:
 324
 325                 cleanup(NULL);
 326                 return PLUGIN_OK;
 327         }
 328     }
 329 }
 330
 331 /*************************** Plugin entry point ****************************/
 332
 333 enum plugin_status plugin_start(struct plugin_api* api, void* parameter)
 334 {
 335     rb = api; /* copy to global api pointer */
 336     (void)parameter;
 337
 338     return main();
 339 }
 340
 341 #endif /* #ifdef HAVE_LCD_BITMAP */
 342