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