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 #include "helper.h"
  24
  25 #if defined(HAVE_LCD_BITMAP) && (LCD_DEPTH < 4)
  26 #include "gray.h"
  27
  28 PLUGIN_HEADER
  29
  30 /* variable button definitions */
  31 #if CONFIG_KEYPAD == RECORDER_PAD
  32 #define GRAYSCALE_SHIFT BUTTON_ON
  33 #define GRAYSCALE_UP BUTTON_UP
  34 #define GRAYSCALE_DOWN BUTTON_DOWN
  35 #define GRAYSCALE_LEFT BUTTON_LEFT
  36 #define GRAYSCALE_RIGHT BUTTON_RIGHT
  37 #define GRAYSCALE_OFF BUTTON_OFF
  38
  39 #elif CONFIG_KEYPAD == ONDIO_PAD
  40 #define GRAYSCALE_SHIFT BUTTON_MENU
  41 #define GRAYSCALE_UP BUTTON_UP
  42 #define GRAYSCALE_DOWN BUTTON_DOWN
  43 #define GRAYSCALE_LEFT BUTTON_LEFT
  44 #define GRAYSCALE_RIGHT BUTTON_RIGHT
  45 #define GRAYSCALE_OFF BUTTON_OFF
  46
  47 #elif CONFIG_KEYPAD == IRIVER_H100_PAD
  48 #define GRAYSCALE_SHIFT BUTTON_ON
  49 #define GRAYSCALE_UP BUTTON_UP
  50 #define GRAYSCALE_DOWN BUTTON_DOWN
  51 #define GRAYSCALE_LEFT BUTTON_LEFT
  52 #define GRAYSCALE_RIGHT BUTTON_RIGHT
  53 #define GRAYSCALE_OFF BUTTON_OFF
  54
  55 #define GRAYSCALE_RC_OFF BUTTON_RC_STOP
  56
  57 #elif (CONFIG_KEYPAD == IPOD_4G_PAD) || (CONFIG_KEYPAD == IPOD_3G_PAD) || \
  58       (CONFIG_KEYPAD == IPOD_1G2G_PAD)
  59 #define GRAYSCALE_SHIFT BUTTON_SELECT
  60 #define GRAYSCALE_UP BUTTON_SCROLL_BACK
  61 #define GRAYSCALE_DOWN BUTTON_SCROLL_FWD
  62 #define GRAYSCALE_LEFT BUTTON_LEFT
  63 #define GRAYSCALE_RIGHT BUTTON_RIGHT
  64 #define GRAYSCALE_OFF BUTTON_MENU
  65
  66 #elif CONFIG_KEYPAD == IRIVER_IFP7XX_PAD
  67 #define GRAYSCALE_SHIFT BUTTON_PLAY
  68 #define GRAYSCALE_UP BUTTON_UP
  69 #define GRAYSCALE_DOWN BUTTON_DOWN
  70 #define GRAYSCALE_LEFT BUTTON_LEFT
  71 #define GRAYSCALE_RIGHT BUTTON_RIGHT
  72 #define GRAYSCALE_OFF BUTTON_EQ
  73 #endif
  74
  75 #define GFX_HEIGHT (LCD_HEIGHT-8)
  76 #if LCD_WIDTH < 160
  77 #define GFX_GRAYTONE_WIDTH 86
  78 #define GFX_GRAYTONE_STEP 3
  79 #else
  80 #define GFX_GRAYTONE_WIDTH 128
  81 #define GFX_GRAYTONE_STEP 2
  82 #endif
  83 /******************************* Globals ***********************************/
  84
  85 static struct plugin_api* rb; /* global api struct pointer */
  86 static char pbuf[32];         /* global printf buffer */
  87 static unsigned char *gbuf;
  88 static size_t gbuf_size = 0;
  89
  90 /**************************** main function ********************************/
  91
  92 void cleanup(void *parameter)
  93 {
  94     (void)parameter;
  95
  96     gray_release(); /* switch off overlay and deinitialize */
  97     /* Turn on backlight timeout (revert to settings) */
  98     backlight_use_settings(rb); /* backlight control in lib/helper.c */
  99 }
 100
 101 /* this is only a demo of what the framework can do */
 102 int main(void)
 103 {
 104     int shades, time;
 105     int x, y, i;
 106     int button, scroll_amount;
 107     bool black_border = false;
 108
 109     static const unsigned char rockbox[] = {
 110     /* ...........................................
 111      * .####...###...###..#...#.####...###..#...#.
 112      * .#...#.#...#.#...#.#..#..#...#.#...#..#.#..
 113      * .####..#...#.#.....###...####..#...#...#...
 114      * .#..#..#...#.#...#.#..#..#...#.#...#..#.#..
 115      * .#...#..###...###..#...#.####...###..#...#.
 116      * ...........................................
 117      * 43 x 7 pixel, 1 bpp
 118      */
 119        0x00, 0x3E, 0x0A, 0x0A, 0x1A, 0x24, 0x00, 0x1C, 0x22, 0x22,
 120        0x22, 0x1C, 0x00, 0x1C, 0x22, 0x22, 0x22, 0x14, 0x00, 0x3E,
 121        0x08, 0x08, 0x14, 0x22, 0x00, 0x3E, 0x2A, 0x2A, 0x2A, 0x14,
 122        0x00, 0x1C, 0x22, 0x22, 0x22, 0x1C, 0x00, 0x22, 0x14, 0x08,
 123        0x14, 0x22, 0x00
 124     };
 125
 126     static const unsigned char showing[] = {
 127     /* .......................................
 128      * ..####.#...#..###..#...#.#.#...#..####.
 129      * .#.....#...#.#...#.#...#.#.##..#.#.....
 130      * ..###..#####.#...#.#.#.#.#.#.#.#.#..##.
 131      * .....#.#...#.#...#.#.#.#.#.#..##.#...#.
 132      * .####..#...#..###...#.#..#.#...#..####.
 133      * .......................................
 134      * 39 x 7 pixel, 1 bpp
 135      */
 136        0x00, 0x24, 0x2A, 0x2A, 0x2A, 0x12, 0x00, 0x3E, 0x08, 0x08,
 137        0x08, 0x3E, 0x00, 0x1C, 0x22, 0x22, 0x22, 0x1C, 0x00, 0x1E,
 138        0x20, 0x18, 0x20, 0x1E, 0x00, 0x3E, 0x00, 0x3E, 0x04, 0x08,
 139        0x10, 0x3E, 0x00, 0x1C, 0x22, 0x22, 0x2A, 0x3A, 0x00
 140     };
 141
 142     static const unsigned char grayscale_gray[] = {
 143     /* .......................................................
 144      * ..####.####...###..#...#..####..###...###..#.....#####.
 145      * .#.....#...#.#...#.#...#.#.....#...#.#...#.#.....#.....
 146      * .#..##.####..#####..#.#...###..#.....#####.#.....####..
 147      * .#...#.#..#..#...#...#.......#.#...#.#...#.#.....#.....
 148      * ..####.#...#.#...#...#...####...###..#...#.#####.#####.
 149      * .......................................................
 150      * 55 x 7 pixel, 8 bpp
 151      */
 152        110,110,110,110,110,110,110,110,110,110,110,110,110,110,110,110,
 153        110,110,110,110,110,110,110,110,110,110,110,110,110,110,110,110,
 154        110,110,110,110,110,110,110,110,110,110,110,110,110,110,110,110,
 155        110,110,110,110,110,110,110,
 156        120,120, 20, 20, 20, 20,120,222,222,222,222,120,120,120, 24, 24,
 157         24,120,120,226,120,120,120,226,120,120, 28, 28, 28, 28,120,120,
 158        230,230,230,120,120,120, 32, 32, 32,120,120,234,120,120,120,120,
 159        120, 36, 36, 36, 36, 36,120,
 160        130, 20,130,130,130,130,130,222,130,130,130,222,130, 24,130,130,
 161        130, 24,130,226,130,130,130,226,130, 28,130,130,130,130,130,230,
 162        130,130,130,230,130, 32,130,130,130, 32,130,234,130,130,130,130,
 163        130, 36,130,130,130,130,130,
 164        140, 20,140,140, 20, 20,140,222,222,222,222,140,140, 24, 24, 24,
 165         24, 24,140,140,226,140,226,140,140,140, 28, 28, 28,140,140,230,
 166        140,140,140,140,140, 32, 32, 32, 32, 32,140,234,140,140,140,140,
 167        140, 36, 36, 36, 36,140,140,
 168        130, 20,130,130,130, 20,130,222,130,130,222,130,130, 24,130,130,
 169        130, 24,130,130,130,226,130,130,130,130,130,130,130, 28,130,230,
 170        130,130,130,230,130, 32,130,130,130, 32,130,234,130,130,130,130,
 171        130, 36,130,130,130,130,130,
 172        120,120, 20, 20, 20, 20,120,222,120,120,120,222,120, 24,120,120,
 173        120, 24,120,120,120,226,120,120,120, 28, 28, 28, 28,120,120,120,
 174        230,230,230,120,120, 32,120,120,120, 32,120,234,234,234,234,234,
 175        120, 36, 36, 36, 36, 36,120,
 176        110,110,110,110,110,110,110,110,110,110,110,110,110,110,110,110,
 177        110,110,110,110,110,110,110,110,110,110,110,110,110,110,110,110,
 178        110,110,110,110,110,110,110,110,110,110,110,110,110,110,110,110,
 179        110,110,110,110,110,110,110
 180     };
 181
 182     /* Turn off backlight timeout */
 183     backlight_force_on(rb); /* backlight control in lib/helper.c */
 184
 185     rb->lcd_setfont(FONT_SYSFIXED);   /* select default font */
 186
 187     /* get the remainder of the plugin buffer */
 188     gbuf = (unsigned char *) rb->plugin_get_buffer(&gbuf_size);
 189
 190     /* initialize the greyscale buffer:
 191        Archos: 112 pixels wide, 7 rows (56 pixels) high, (try to) reserve
 192        32 bitplanes for 33 shades of grey.
 193        H1x0: 160 pixels wide, 30 rows (120 pixels) high, (try to) reserve
 194        32 bitplanes for 33 shades of grey. */
 195     shades = gray_init(rb, gbuf, gbuf_size, true, LCD_WIDTH, GFX_HEIGHT,
 196                        32, 0, NULL) + 1;
 197
 198     /* place greyscale overlay 1 row down */
 199     gray_set_position(0, 8);
 200
 201     rb->snprintf(pbuf, sizeof(pbuf), "Shades: %d", shades);
 202     rb->lcd_puts(0, 0, pbuf);
 203     rb->lcd_update();
 204
 205 #ifdef HAVE_ADJUSTABLE_CPU_FREQ
 206     rb->cpu_boost(true);
 207 #endif
 208     gray_show(true);          /* switch on greyscale overlay */
 209
 210     time = *rb->current_tick; /* start time measurement */
 211
 212     gray_set_background(150);
 213     gray_clear_display();     /* fill everything with grey 150 */
 214
 215     /* draw a dark grey line star background */
 216     gray_set_foreground(80);
 217     for (y = 0; y < GFX_HEIGHT; y += 8)                   /* horizontal part */
 218     {
 219         gray_drawline(0, y, (LCD_WIDTH-1), (GFX_HEIGHT-1) - y); /*grey lines */
 220     }
 221     for (x = 10; x <= LCD_WIDTH; x += 10)                    /* vertical part */
 222     {
 223         gray_drawline(x, 0, (LCD_WIDTH-1) - x, (GFX_HEIGHT-1)); /*grey lines */
 224     }
 225
 226     gray_set_foreground(0);
 227     gray_drawrect(0, 0, LCD_WIDTH, GFX_HEIGHT);   /* black border */
 228
 229     /* draw grey tones */
 230     for (i = 0; i < GFX_GRAYTONE_WIDTH; i++)
 231     {
 232         x = ((LCD_WIDTH-GFX_GRAYTONE_WIDTH)/2) + i;
 233         gray_set_foreground(GFX_GRAYTONE_STEP * i);
 234         /* vertical lines */
 235         gray_vline(x, (GFX_HEIGHT/8), (GFX_HEIGHT-GFX_HEIGHT/8-1));
 236     }
 237
 238     gray_set_drawmode(DRMODE_COMPLEMENT);
 239     /* invert rectangle (lower half) */
 240     gray_fillrect((LCD_WIDTH-GFX_GRAYTONE_WIDTH)/2, (GFX_HEIGHT/2+1),
 241                   GFX_GRAYTONE_WIDTH, (GFX_HEIGHT/2-GFX_HEIGHT/8-1));
 242     /* invert a line */
 243     gray_hline((LCD_WIDTH-GFX_GRAYTONE_WIDTH)/2,
 244                (LCD_WIDTH+GFX_GRAYTONE_WIDTH)/2, (GFX_HEIGHT/2-1));
 245
 246     /* show bitmaps (1 bit and 8 bit) */
 247     /* opaque */
 248     gray_set_drawinfo(DRMODE_SOLID, 255, 100);
 249     gray_mono_bitmap(rockbox,
 250                      MAX((LCD_WIDTH/2-47), ((LCD_WIDTH-GFX_GRAYTONE_WIDTH)/2)),
 251                      (5*GFX_HEIGHT/16-4), 43, 7);
 252     /* transparent */
 253     gray_set_drawinfo(DRMODE_FG, 0, 100);
 254     gray_mono_bitmap(showing, (LCD_WIDTH/2+4) , (5*GFX_HEIGHT/16-4), 39, 7);
 255     /* greyscale */
 256     gray_gray_bitmap(grayscale_gray, ((LCD_WIDTH-55)/2), (11*GFX_HEIGHT/16-4),
 257                      55, 7);
 258
 259     gray_update();
 260
 261     time = *rb->current_tick - time;  /* end time measurement */
 262
 263     rb->snprintf(pbuf, sizeof(pbuf), "Shades: %d, %d.%02ds", shades,
 264                  time / 100, time % 100);
 265     rb->lcd_puts(0, 0, pbuf);
 266     gray_deferred_lcd_update();       /* schedule an lcd_update() */
 267 #ifdef HAVE_ADJUSTABLE_CPU_FREQ
 268     rb->cpu_boost(false);
 269 #endif
 270
 271     /* drawing is now finished, play around with scrolling
 272      * until you press OFF or connect USB
 273      */
 274     gray_set_background(255);
 275     while (true)
 276     {
 277         scroll_amount = 1;
 278
 279         button = rb->button_get(true);
 280
 281         if (rb->default_event_handler_ex(button, cleanup, NULL)
 282             == SYS_USB_CONNECTED)
 283             return PLUGIN_USB_CONNECTED;
 284
 285         if (button & GRAYSCALE_SHIFT)
 286         {
 287             if (!black_border)
 288             {
 289                 gray_set_background(0);
 290                 black_border = true;
 291             }
 292         }
 293         else
 294         {
 295             if (black_border)
 296             {
 297                 gray_set_background(255);
 298                 black_border = false;
 299             }
 300         }
 301
 302         if (button & BUTTON_REPEAT)
 303             scroll_amount = 4;
 304
 305         switch (button & ~(GRAYSCALE_SHIFT | BUTTON_REPEAT))
 306         {
 307             case GRAYSCALE_LEFT:
 308
 309                 gray_scroll_left(scroll_amount);  /* scroll left */
 310                 gray_update();
 311                 break;
 312
 313             case GRAYSCALE_RIGHT:
 314
 315                 gray_scroll_right(scroll_amount); /* scroll right */
 316                 gray_update();
 317                 break;
 318
 319             case GRAYSCALE_UP:
 320
 321                 gray_scroll_up(scroll_amount);    /* scroll up */
 322                 gray_update();
 323                 break;
 324
 325             case GRAYSCALE_DOWN:
 326
 327                 gray_scroll_down(scroll_amount);  /* scroll down */
 328                 gray_update();
 329                 break;
 330 #ifdef GRAYSCALE_RC_OFF
 331             case GRAYSCALE_RC_OFF:
 332 #endif
 333             case GRAYSCALE_OFF:
 334
 335                 cleanup(NULL);
 336                 return PLUGIN_OK;
 337         }
 338     }
 339 }
 340
 341 /*************************** Plugin entry point ****************************/
 342
 343 enum plugin_status plugin_start(struct plugin_api* api, void* parameter)
 344 {
 345     rb = api; /* copy to global api pointer */
 346     (void)parameter;
 347
 348     return main();
 349 }
 350
 351 #endif /* #ifdef HAVE_LCD_BITMAP */
 352