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 PLUGIN_HEADER
  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 #else
  79 #error unsupported keypad
  80 #endif
  81
  82 #define BLOCK_WIDTH  (LCD_WIDTH/8)
  83 #define BLOCK_HEIGHT (LCD_HEIGHT/8)
  84
  85 #define STEPS 16
  86
  87 GREY_INFO_STRUCT
  88
  89 static const unsigned char dither_matrix[16][16] = {
  90     {   0,192, 48,240, 12,204, 60,252,  3,195, 51,243, 15,207, 63,255 },
  91     { 128, 64,176,112,140, 76,188,124,131, 67,179,115,143, 79,191,127 },
  92     {  32,224, 16,208, 44,236, 28,220, 35,227, 19,211, 47,239, 31,223 },
  93     { 160, 96,144, 80,172,108,156, 92,163, 99,147, 83,175,111,159, 95 },
  94     {   8,200, 56,248,  4,196, 52,244, 11,203, 59,251,  7,199, 55,247 },
  95     { 136, 72,184,120,132, 68,180,116,139, 75,187,123,135, 71,183,119 },
  96     {  40,232, 24,216, 36,228, 20,212, 43,235, 27,219, 39,231, 23,215 },
  97     { 168,104,152, 88,164,100,148, 84,171,107,155, 91,167,103,151, 87 },
  98     {   2,194, 50,242, 14,206, 62,254,  1,193, 49,241, 13,205, 61,253 },
  99     { 130, 66,178,114,142, 78,190,126,129, 65,177,113,141, 77,189,125 },
 100     {  34,226, 18,210, 46,238, 30,222, 33,225, 17,209, 45,237, 29,221 },
 101     { 162, 98,146, 82,174,110,158, 94,161, 97,145, 81,173,109,157, 93 },
 102     {  10,202, 58,250,  6,198, 54,246,  9,201, 57,249,  5,197, 53,245 },
 103     { 138, 74,186,122,134, 70,182,118,137, 73,185,121,133, 69,181,117 },
 104     {  42,234, 26,218, 38,230, 22,214, 41,233, 25,217, 37,229, 21,213 },
 105     { 170,106,154, 90,166,102,150, 86,169,105,153, 89,165,101,149, 85 }
 106 };
 107
 108 static unsigned char input_levels[STEPS+1];
 109 static unsigned char lcd_levels[STEPS+1];
 110
 111 static unsigned char *gbuf;
 112 static size_t gbuf_size = 0;
 113
 114 static void fill_rastered(int bx, int by, int bw, int bh, int step)
 115 {
 116     int x, xmax, y, ymax;
 117     int level;
 118
 119     if (step < 0)
 120         step = 0;
 121     else if (step > STEPS)
 122         step = STEPS;
 123
 124     level = input_levels[step];
 125     level += (level-1) >> 7;
 126
 127     for (y = (LCD_HEIGHT/2) + by * BLOCK_HEIGHT, ymax = y + bh * BLOCK_HEIGHT;
 128          y < ymax; y++)
 129     {
 130         for (x = (LCD_WIDTH/2) + bx * BLOCK_WIDTH, xmax = x + bw * BLOCK_WIDTH;
 131              x < xmax; x++)
 132         {
 133             grey_set_foreground((level > dither_matrix[y & 0xf][x & 0xf])
 134                                 ? 255 : 0);
 135             grey_drawpixel(x, y);
 136         }
 137     }
 138 }
 139
 140 /* plugin entry point */
 141 enum plugin_status plugin_start(const void* parameter)
 142 {
 143     bool done = false;
 144     int cur_step = 1;
 145     int button, i, l, fd;
 146     unsigned char filename[MAX_PATH];
 147
 148     /* standard stuff */
 149     (void)parameter;
 150
 151     gbuf = (unsigned char *) rb->plugin_get_buffer(&gbuf_size);
 152
 153     if (!grey_init(gbuf, gbuf_size,
 154                    GREY_BUFFERED|GREY_RAWMAPPED|GREY_ON_COP,
 155                    LCD_WIDTH, LCD_HEIGHT, NULL))
 156     {
 157         rb->splash(HZ, "Not enough memory.");
 158         return PLUGIN_ERROR;
 159     }
 160     for (i = 0; i <= STEPS; i++)
 161         input_levels[i] = lcd_levels[i] = (255 * i + (STEPS/2)) / STEPS;
 162
 163     backlight_force_on(); /* backlight control in lib/helper.c */
 164
 165     grey_set_background(0); /* set background to black */
 166     grey_clear_display();
 167     grey_show(true);
 168
 169     while (!done)
 170     {
 171         fill_rastered(-3, -3, 2, 2, cur_step - 1);
 172         fill_rastered(-1, -3, 2, 2, cur_step);
 173         fill_rastered(1, -3, 2, 2, cur_step + 1);
 174         fill_rastered(-3, -1, 2, 2, cur_step);
 175         grey_set_foreground(lcd_levels[cur_step]);
 176         grey_fillrect(LCD_WIDTH/2-BLOCK_WIDTH, LCD_HEIGHT/2-BLOCK_HEIGHT,
 177                       2*BLOCK_WIDTH, 2*BLOCK_HEIGHT);
 178         fill_rastered(1, -1, 2, 2, cur_step);
 179         fill_rastered(-3, 1, 2, 2, cur_step + 1);
 180         fill_rastered(-1, 1, 2, 2, cur_step);
 181         fill_rastered(1, 1, 2, 2, cur_step - 1);
 182         grey_update();
 183
 184         button = rb->button_get(true);
 185         switch (button)
 186         {
 187             case GREY_PREV:
 188                 if (cur_step > 0)
 189                     cur_step--;
 190                 break;
 191
 192             case GREY_NEXT:
 193                 if (cur_step < STEPS)
 194                     cur_step++;
 195                 break;
 196
 197             case GREY_UP:
 198             case GREY_UP|BUTTON_REPEAT:
 199                 l = lcd_levels[cur_step];
 200                 if (l < 255)
 201                 {
 202                     l++;
 203                     for (i = cur_step; i <= STEPS; i++)
 204                         if (lcd_levels[i] < l)
 205                             lcd_levels[i] = l;
 206                 }
 207                 break;
 208
 209             case GREY_DOWN:
 210             case GREY_DOWN|BUTTON_REPEAT:
 211                 l = lcd_levels[cur_step];
 212                 if (l > 0)
 213                 {
 214                     l--;
 215                     for (i = cur_step; i >= 0; i--)
 216                         if (lcd_levels[i] > l)
 217                             lcd_levels[i] = l;
 218                 }
 219                 break;
 220
 221             case GREY_OK:
 222                 rb->create_numbered_filename(filename, "/", "test_grey_",
 223                                              ".txt", 2 IF_CNFN_NUM_(, NULL));
 224                 fd = rb->open(filename, O_RDWR|O_CREAT|O_TRUNC);
 225                 if (fd >= 0)
 226                 {
 227                     for (i = 0; i <= STEPS; i++)
 228                          rb->fdprintf(fd, "%3d: %3d\n", input_levels[i],
 229                                       lcd_levels[i]);
 230                     rb->close(fd);
 231                 }
 232                 /* fall through */
 233
 234             case GREY_QUIT:
 235                 done = true;
 236                 break;
 237         }
 238     }
 239
 240     grey_release();
 241     backlight_use_settings(); /* backlight control in lib/helper.c */
 242     return PLUGIN_OK;
 243 }