apps/plugins/test_grey.c

   1 /***************************************************************************
   2  *             __________               __   ___.
   3  *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
   4  *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
   5  *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
   6  *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
   7  *                     \/            \/     \/    \/            \/
   8  * $Id$
   9  *
  10  * Copyright (C) 2008 Jens Arnold
  11  *
  12  * This program is free software; you can redistribute it and/or
  13  * modify it under the terms of the GNU General Public License
  14  * as published by the Free Software Foundation; either version 2
  15  * of the License, or (at your option) any later version.
  16  *
  17  * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
  18  * KIND, either express or implied.
  19  *
  20  ****************************************************************************/
  21 #include "plugin.h"
  22 #include "lib/grey.h"
  23 #include "lib/helper.h"
  24
  25
  26
  27 #if (CONFIG_KEYPAD == IPOD_4G_PAD) || (CONFIG_KEYPAD == IPOD_3G_PAD) \
  28  || (CONFIG_KEYPAD == IPOD_1G2G_PAD)
  29 #define GREY_QUIT BUTTON_MENU
  30 #define GREY_OK   BUTTON_SELECT
  31 #define GREY_PREV BUTTON_LEFT
  32 #define GREY_NEXT BUTTON_RIGHT
  33 #define GREY_UP   BUTTON_SCROLL_FWD
  34 #define GREY_DOWN BUTTON_SCROLL_BACK
  35
  36 #elif CONFIG_KEYPAD == IRIVER_H100_PAD
  37 #define GREY_QUIT BUTTON_OFF
  38 #define GREY_OK   BUTTON_SELECT
  39 #define GREY_PREV BUTTON_LEFT
  40 #define GREY_NEXT BUTTON_RIGHT
  41 #define GREY_UP   BUTTON_UP
  42 #define GREY_DOWN BUTTON_DOWN
  43
  44 #elif CONFIG_KEYPAD == RECORDER_PAD
  45 #define GREY_QUIT BUTTON_OFF
  46 #define GREY_OK   BUTTON_PLAY
  47 #define GREY_PREV BUTTON_LEFT
  48 #define GREY_NEXT BUTTON_RIGHT
  49 #define GREY_UP   BUTTON_UP
  50 #define GREY_DOWN BUTTON_DOWN
  51
  52 #elif CONFIG_KEYPAD == ONDIO_PAD
  53 #define GREY_QUIT BUTTON_OFF
  54 #define GREY_OK   BUTTON_MENU
  55 #define GREY_PREV BUTTON_LEFT
  56 #define GREY_NEXT BUTTON_RIGHT
  57 #define GREY_UP   BUTTON_UP
  58 #define GREY_DOWN BUTTON_DOWN
  59
  60 #elif (CONFIG_KEYPAD == IAUDIO_X5M5_PAD) \
  61    || (CONFIG_KEYPAD == MROBE100_PAD) \
  62    || (CONFIG_KEYPAD == SANSA_CLIP_PAD)
  63 #define GREY_QUIT BUTTON_POWER
  64 #define GREY_OK   BUTTON_SELECT
  65 #define GREY_PREV BUTTON_LEFT
  66 #define GREY_NEXT BUTTON_RIGHT
  67 #define GREY_UP   BUTTON_UP
  68 #define GREY_DOWN BUTTON_DOWN
  69
  70 #elif CONFIG_KEYPAD == IAUDIO_M3_PAD
  71 #define GREY_QUIT BUTTON_RC_REC
  72 #define GREY_OK   BUTTON_RC_PLAY
  73 #define GREY_PREV BUTTON_RC_REW
  74 #define GREY_NEXT BUTTON_RC_FF
  75 #define GREY_UP   BUTTON_RC_VOL_UP
  76 #define GREY_DOWN BUTTON_RC_VOL_DOWN
  77
  78 #elif CONFIG_KEYPAD == SAMSUNG_YH_PAD
  79 #define GREY_QUIT BUTTON_REC
  80 #define GREY_OK   BUTTON_PLAY
  81 #define GREY_PREV BUTTON_LEFT
  82 #define GREY_NEXT BUTTON_RIGHT
  83 #define GREY_UP   BUTTON_UP
  84 #define GREY_DOWN BUTTON_DOWN
  85
  86 #elif CONFIG_KEYPAD == MPIO_HD200_PAD
  87 #define GREY_QUIT (BUTTON_REC|BUTTON_PLAY)
  88 #define GREY_OK   BUTTON_PLAY
  89 #define GREY_PREV BUTTON_REW
  90 #define GREY_NEXT BUTTON_FF
  91 #define GREY_UP   BUTTON_VOL_UP
  92 #define GREY_DOWN BUTTON_VOL_DOWN
  93
  94 #elif CONFIG_KEYPAD == MPIO_HD300_PAD
  95 #define GREY_QUIT (BUTTON_REC|BUTTON_REPEAT)
  96 #define GREY_OK   BUTTON_PLAY
  97 #define GREY_PREV BUTTON_REW
  98 #define GREY_NEXT BUTTON_FF
  99 #define GREY_UP   BUTTON_UP
 100 #define GREY_DOWN BUTTON_DOWN
 101
 102 #else
 103 #error unsupported keypad
 104 #endif
 105
 106 #define BLOCK_WIDTH  (LCD_WIDTH/8)
 107 #define BLOCK_HEIGHT (LCD_HEIGHT/8)
 108
 109 #define STEPS 16
 110
 111 GREY_INFO_STRUCT
 112
 113 static const unsigned char dither_matrix[16][16] = {
 114     {   0,192, 48,240, 12,204, 60,252,  3,195, 51,243, 15,207, 63,255 },
 115     { 128, 64,176,112,140, 76,188,124,131, 67,179,115,143, 79,191,127 },
 116     {  32,224, 16,208, 44,236, 28,220, 35,227, 19,211, 47,239, 31,223 },
 117     { 160, 96,144, 80,172,108,156, 92,163, 99,147, 83,175,111,159, 95 },
 118     {   8,200, 56,248,  4,196, 52,244, 11,203, 59,251,  7,199, 55,247 },
 119     { 136, 72,184,120,132, 68,180,116,139, 75,187,123,135, 71,183,119 },
 120     {  40,232, 24,216, 36,228, 20,212, 43,235, 27,219, 39,231, 23,215 },
 121     { 168,104,152, 88,164,100,148, 84,171,107,155, 91,167,103,151, 87 },
 122     {   2,194, 50,242, 14,206, 62,254,  1,193, 49,241, 13,205, 61,253 },
 123     { 130, 66,178,114,142, 78,190,126,129, 65,177,113,141, 77,189,125 },
 124     {  34,226, 18,210, 46,238, 30,222, 33,225, 17,209, 45,237, 29,221 },
 125     { 162, 98,146, 82,174,110,158, 94,161, 97,145, 81,173,109,157, 93 },
 126     {  10,202, 58,250,  6,198, 54,246,  9,201, 57,249,  5,197, 53,245 },
 127     { 138, 74,186,122,134, 70,182,118,137, 73,185,121,133, 69,181,117 },
 128     {  42,234, 26,218, 38,230, 22,214, 41,233, 25,217, 37,229, 21,213 },
 129     { 170,106,154, 90,166,102,150, 86,169,105,153, 89,165,101,149, 85 }
 130 };
 131
 132 static unsigned char input_levels[STEPS+1];
 133 static unsigned char lcd_levels[STEPS+1];
 134
 135 static unsigned char *gbuf;
 136 static size_t gbuf_size = 0;
 137
 138 static void fill_rastered(int bx, int by, int bw, int bh, int step)
 139 {
 140     int x, xmax, y, ymax;
 141     int level;
 142
 143     if (step < 0)
 144         step = 0;
 145     else if (step > STEPS)
 146         step = STEPS;
 147
 148     level = input_levels[step];
 149     level += (level-1) >> 7;
 150
 151     for (y = (LCD_HEIGHT/2) + by * BLOCK_HEIGHT, ymax = y + bh * BLOCK_HEIGHT;
 152          y < ymax; y++)
 153     {
 154         for (x = (LCD_WIDTH/2) + bx * BLOCK_WIDTH, xmax = x + bw * BLOCK_WIDTH;
 155              x < xmax; x++)
 156         {
 157             grey_set_foreground((level > dither_matrix[y & 0xf][x & 0xf])
 158                                 ? 255 : 0);
 159             grey_drawpixel(x, y);
 160         }
 161     }
 162 }
 163
 164 /* plugin entry point */
 165 enum plugin_status plugin_start(const void* parameter)
 166 {
 167     bool done = false;
 168     int cur_step = 1;
 169     int button, i, j, l, fd;
 170     unsigned char filename[MAX_PATH];
 171
 172     /* standard stuff */
 173     (void)parameter;
 174
 175     gbuf = (unsigned char *) rb->plugin_get_buffer(&gbuf_size);
 176
 177     if (!grey_init(gbuf, gbuf_size,
 178                    GREY_BUFFERED|GREY_RAWMAPPED|GREY_ON_COP,
 179                    LCD_WIDTH, LCD_HEIGHT, NULL))
 180     {
 181         rb->splash(HZ, "Not enough memory.");
 182         return PLUGIN_ERROR;
 183     }
 184     for (i = 0; i <= STEPS; i++)
 185         input_levels[i] = lcd_levels[i] = (255 * i + (STEPS/2)) / STEPS;
 186
 187     backlight_ignore_timeout();
 188
 189     grey_set_background(0); /* set background to black */
 190     grey_clear_display();
 191     grey_show(true);
 192
 193     rb->lcd_setfont(FONT_SYSFIXED);
 194
 195     while (!done)
 196     {
 197         fill_rastered(-3, -3, 2, 2, cur_step - 1);
 198         fill_rastered(-1, -3, 2, 2, cur_step);
 199         fill_rastered(1, -3, 2, 2, cur_step + 1);
 200         fill_rastered(-3, -1, 2, 2, cur_step);
 201         grey_set_foreground(lcd_levels[cur_step]);
 202         grey_fillrect(LCD_WIDTH/2-BLOCK_WIDTH, LCD_HEIGHT/2-BLOCK_HEIGHT,
 203                       2*BLOCK_WIDTH, 2*BLOCK_HEIGHT);
 204         fill_rastered(1, -1, 2, 2, cur_step);
 205         fill_rastered(-3, 1, 2, 2, cur_step + 1);
 206         fill_rastered(-1, 1, 2, 2, cur_step);
 207         fill_rastered(1, 1, 2, 2, cur_step - 1);
 208         grey_update();
 209
 210         button = rb->button_get(true);
 211         switch (button)
 212         {
 213             case GREY_PREV:
 214                 if (cur_step > 0)
 215                     cur_step--;
 216                 break;
 217
 218             case GREY_NEXT:
 219                 if (cur_step < STEPS)
 220                     cur_step++;
 221                 break;
 222
 223             case GREY_UP:
 224             case GREY_UP|BUTTON_REPEAT:
 225                 l = lcd_levels[cur_step];
 226                 if (l < 255)
 227                 {
 228                     l++;
 229                     for (i = cur_step; i <= STEPS; i++)
 230                         if (lcd_levels[i] < l)
 231                             lcd_levels[i] = l;
 232                 }
 233                 break;
 234
 235             case GREY_DOWN:
 236             case GREY_DOWN|BUTTON_REPEAT:
 237                 l = lcd_levels[cur_step];
 238                 if (l > 0)
 239                 {
 240                     l--;
 241                     for (i = cur_step; i >= 0; i--)
 242                         if (lcd_levels[i] > l)
 243                             lcd_levels[i] = l;
 244                 }
 245                 break;
 246
 247             case GREY_OK:
 248
 249                 /* dump result in form suitable for lcdlinear[] */
 250                 rb->create_numbered_filename(filename, "/", "test_grey_",
 251                                              ".txt", 2 IF_CNFN_NUM_(, NULL));
 252                 fd = rb->open(filename, O_RDWR|O_CREAT|O_TRUNC, 0666);
 253                 if (fd >= 0)
 254                 {
 255                     rb->fdprintf(fd, "Adjusted grey shades\n");
 256                     for (i = 0; i <= STEPS; i++)
 257                          rb->fdprintf(fd, "%3d: %3d\n", input_levels[i],
 258                                       lcd_levels[i]);
 259                     rb->fdprintf(fd,"\n\nInterpolated lcdlinear matrix\n");
 260
 261                     for (i = 1; i <= STEPS; i++)
 262                     {
 263                         for (j=0; j < STEPS; j++)
 264                         {
 265                             rb->fdprintf(fd, "%3d, ",
 266                                 lcd_levels[i-1] +
 267                                 ((lcd_levels[i] - lcd_levels[i-1])*j)/STEPS);
 268                         }
 269                         rb->fdprintf(fd, "\n");
 270                     }
 271                     rb->close(fd);
 272                 }
 273                 /* fall through */
 274
 275             case GREY_QUIT:
 276                 done = true;
 277                 break;
 278         }
 279     }
 280
 281     grey_release();
 282     backlight_use_settings();
 283     return PLUGIN_OK;
 284 }