229 lines
7.8 KiB
C
229 lines
7.8 KiB
C
/***************************************************************************
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* __________ __ ___.
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* Open \______ \ ____ ____ | | _\_ |__ _______ ___
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* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
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* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
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* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
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* \/ \/ \/ \/ \/
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* $Id$
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*
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* Copyright (C) 2008 Jens Arnold
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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****************************************************************************/
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#include "plugin.h"
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#include "lib/grey.h"
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#include "lib/helper.h"
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#include "lib/pluginlib_actions.h"
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/* this set the context to use with PLA */
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static const struct button_mapping *plugin_contexts[] = { pla_main_ctx };
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#define GREY_QUIT PLA_EXIT
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#define GREY_QUIT2 PLA_CANCEL
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#define GREY_OK PLA_SELECT
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#define GREY_PREV PLA_LEFT
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#define GREY_NEXT PLA_RIGHT
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#ifdef HAVE_SCROLLWHEEL
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#define GREY_UP PLA_SCROLL_FWD
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#define GREY_UP_REPEAT PLA_SCROLL_FWD_REPEAT
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#define GREY_DOWN PLA_SCROLL_BACK
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#define GREY_DOWN_REPEAT PLA_SCROLL_BACK_REPEAT
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#else
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#define GREY_UP PLA_UP
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#define GREY_UP_REPEAT PLA_UP_REPEAT
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#define GREY_DOWN PLA_DOWN
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#define GREY_DOWN_REPEAT PLA_DOWN_REPEAT
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#endif /*HAVE_SCROLLWHEEL*/
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#define BLOCK_WIDTH (LCD_WIDTH/8)
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#define BLOCK_HEIGHT (LCD_HEIGHT/8)
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#define STEPS 16
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GREY_INFO_STRUCT
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static const unsigned char dither_matrix[16][16] = {
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{ 0,192, 48,240, 12,204, 60,252, 3,195, 51,243, 15,207, 63,255 },
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{ 128, 64,176,112,140, 76,188,124,131, 67,179,115,143, 79,191,127 },
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{ 32,224, 16,208, 44,236, 28,220, 35,227, 19,211, 47,239, 31,223 },
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{ 160, 96,144, 80,172,108,156, 92,163, 99,147, 83,175,111,159, 95 },
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{ 8,200, 56,248, 4,196, 52,244, 11,203, 59,251, 7,199, 55,247 },
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{ 136, 72,184,120,132, 68,180,116,139, 75,187,123,135, 71,183,119 },
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{ 40,232, 24,216, 36,228, 20,212, 43,235, 27,219, 39,231, 23,215 },
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{ 168,104,152, 88,164,100,148, 84,171,107,155, 91,167,103,151, 87 },
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{ 2,194, 50,242, 14,206, 62,254, 1,193, 49,241, 13,205, 61,253 },
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{ 130, 66,178,114,142, 78,190,126,129, 65,177,113,141, 77,189,125 },
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{ 34,226, 18,210, 46,238, 30,222, 33,225, 17,209, 45,237, 29,221 },
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{ 162, 98,146, 82,174,110,158, 94,161, 97,145, 81,173,109,157, 93 },
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{ 10,202, 58,250, 6,198, 54,246, 9,201, 57,249, 5,197, 53,245 },
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{ 138, 74,186,122,134, 70,182,118,137, 73,185,121,133, 69,181,117 },
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{ 42,234, 26,218, 38,230, 22,214, 41,233, 25,217, 37,229, 21,213 },
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{ 170,106,154, 90,166,102,150, 86,169,105,153, 89,165,101,149, 85 }
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};
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static unsigned char input_levels[STEPS+1];
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static unsigned char lcd_levels[STEPS+1];
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static unsigned char *gbuf;
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static size_t gbuf_size = 0;
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static void fill_rastered(int bx, int by, int bw, int bh, int step)
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{
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int x, xmax, y, ymax;
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int level;
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if (step < 0)
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step = 0;
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else if (step > STEPS)
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step = STEPS;
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level = input_levels[step];
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level += (level-1) >> 7;
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for (y = (LCD_HEIGHT/2) + by * BLOCK_HEIGHT, ymax = y + bh * BLOCK_HEIGHT;
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y < ymax; y++)
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{
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for (x = (LCD_WIDTH/2) + bx * BLOCK_WIDTH, xmax = x + bw * BLOCK_WIDTH;
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x < xmax; x++)
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{
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grey_set_foreground((level > dither_matrix[y & 0xf][x & 0xf])
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? 255 : 0);
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grey_drawpixel(x, y);
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}
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}
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}
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/* plugin entry point */
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enum plugin_status plugin_start(const void* parameter)
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{
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bool done = false;
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int cur_step = 1;
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int button, i, j, l, fd;
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unsigned char filename[MAX_PATH];
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/* standard stuff */
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(void)parameter;
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gbuf = (unsigned char *) rb->plugin_get_buffer(&gbuf_size);
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if (!grey_init(gbuf, gbuf_size,
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GREY_BUFFERED|GREY_RAWMAPPED|GREY_ON_COP,
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LCD_WIDTH, LCD_HEIGHT, NULL))
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{
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rb->splash(HZ, "Not enough memory.");
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return PLUGIN_ERROR;
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}
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for (i = 0; i <= STEPS; i++)
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input_levels[i] = lcd_levels[i] = (255 * i + (STEPS/2)) / STEPS;
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#ifdef HAVE_BACKLIGHT
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backlight_ignore_timeout();
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#endif
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grey_set_background(0); /* set background to black */
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grey_clear_display();
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grey_show(true);
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rb->lcd_setfont(FONT_SYSFIXED);
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while (!done)
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{
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fill_rastered(-3, -3, 2, 2, cur_step - 1);
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fill_rastered(-1, -3, 2, 2, cur_step);
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fill_rastered(1, -3, 2, 2, cur_step + 1);
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fill_rastered(-3, -1, 2, 2, cur_step);
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grey_set_foreground(lcd_levels[cur_step]);
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grey_fillrect(LCD_WIDTH/2-BLOCK_WIDTH, LCD_HEIGHT/2-BLOCK_HEIGHT,
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2*BLOCK_WIDTH, 2*BLOCK_HEIGHT);
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fill_rastered(1, -1, 2, 2, cur_step);
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fill_rastered(-3, 1, 2, 2, cur_step + 1);
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fill_rastered(-1, 1, 2, 2, cur_step);
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fill_rastered(1, 1, 2, 2, cur_step - 1);
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grey_update();
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button = pluginlib_getaction(TIMEOUT_BLOCK, plugin_contexts,
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ARRAYLEN(plugin_contexts));
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switch (button)
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{
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case GREY_PREV:
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if (cur_step > 0)
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cur_step--;
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break;
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case GREY_NEXT:
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if (cur_step < STEPS)
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cur_step++;
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break;
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case GREY_UP:
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case GREY_UP_REPEAT:
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l = lcd_levels[cur_step];
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if (l < 255)
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{
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l++;
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for (i = cur_step; i <= STEPS; i++)
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if (lcd_levels[i] < l)
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lcd_levels[i] = l;
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}
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break;
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case GREY_DOWN:
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case GREY_DOWN_REPEAT:
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l = lcd_levels[cur_step];
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if (l > 0)
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{
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l--;
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for (i = cur_step; i >= 0; i--)
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if (lcd_levels[i] > l)
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lcd_levels[i] = l;
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}
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break;
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case GREY_OK:
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/* dump result in form suitable for lcdlinear[] */
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rb->create_numbered_filename(filename, HOME_DIR, "test_grey_",
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".txt", 2 IF_CNFN_NUM_(, NULL));
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fd = rb->open(filename, O_RDWR|O_CREAT|O_TRUNC, 0666);
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if (fd >= 0)
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{
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rb->fdprintf(fd, "Adjusted grey shades\n");
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for (i = 0; i <= STEPS; i++)
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rb->fdprintf(fd, "%3d: %3d\n", input_levels[i],
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lcd_levels[i]);
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rb->fdprintf(fd,"\n\nInterpolated lcdlinear matrix\n");
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for (i = 1; i <= STEPS; i++)
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{
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for (j=0; j < STEPS; j++)
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{
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rb->fdprintf(fd, "%3d, ",
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lcd_levels[i-1] +
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((lcd_levels[i] - lcd_levels[i-1])*j)/STEPS);
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}
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rb->fdprintf(fd, "\n");
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}
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rb->close(fd);
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}
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/* fall through */
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case GREY_QUIT:
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case GREY_QUIT2:
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done = true;
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break;
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}
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}
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grey_release();
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#ifdef HAVE_BACKLIGHT
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backlight_use_settings();
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#endif
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return PLUGIN_OK;
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}
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