/*************************************************************************** * __________ __ ___. * Open \______ \ ____ ____ | | _\_ |__ _______ ___ * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ * \/ \/ \/ \/ \/ * * Copyright (C) 1999 Chris Allegretta * Copyright (C) 2005 Alastair S - ported to podzilla * Copyright (C) 2005 Jonas Häggqvist - ported to rockbox * * * 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. * ****************************************************************************/ /* * TODO: * - The font is a bit large, create smaller one * - For colour/greyscale displays, the font from the xscreensaver xmatrix * should be converted and used * BUGS: * - The animation "dies" after a few seconds, not sure why. Works in sim. * Symtom Fixed Oct 2007 GRaTT (Gerritt Gonzales) */ #include "plugin.h" #include "lib/pluginlib_actions.h" /* Images */ #include "pluginbitmaps/matrix_bold.h" #include "pluginbitmaps/matrix_normal.h" #define MAXCHARS 27 - 1 #define COL_W 14 #define COL_H 15 #define COLS LCD_WIDTH/COL_W #define ROWS LCD_HEIGHT/COL_H #define LEFTMARGIN (LCD_WIDTH-(COLS*COL_W))/2 #define TOPMARGIN (LCD_HEIGHT-(ROWS*COL_H))/2 /* this set the context to use with PLA */ static const struct button_mapping *plugin_contexts[] = { pla_main_ctx }; #if (CONFIG_KEYPAD == IPOD_1G2G_PAD) \ || (CONFIG_KEYPAD == IPOD_3G_PAD) \ || (CONFIG_KEYPAD == IPOD_4G_PAD) #define MATRIX_EXIT2 PLA_UP #else #define MATRIX_EXIT2 PLA_CANCEL #endif #ifdef HAVE_SCROLLWHEEL #define MATRIX_SLEEP_MORE PLA_SCROLL_BACK #define MATRIX_SLEEP_MORE_REPEAT PLA_SCROLL_BACK_REPEAT #define MATRIX_SLEEP_LESS PLA_SCROLL_FWD #define MATRIX_SLEEP_LESS_REPEAT PLA_SCROLL_FWD_REPEAT #else #define MATRIX_SLEEP_MORE PLA_UP #define MATRIX_SLEEP_MORE_REPEAT PLA_UP_REPEAT #define MATRIX_SLEEP_LESS PLA_DOWN #define MATRIX_SLEEP_LESS_REPEAT PLA_DOWN_REPEAT #endif /* HAVE_SCROLLWHEEL */ #define MATRIX_PAUSE PLA_SELECT #define MATRIX_EXIT PLA_EXIT #define SLEEP HZ/50 /* Each position is of this type */ typedef struct cmatrix { int val; int bold; } cmatrix; /* The matrix - who'd have guessed it was just a few hundred bytes? */ static cmatrix matrix[ROWS][COLS]; static int length[COLS]; static int spaces[COLS]; static int updates[COLS]; static void matrix_init(void) { int i,j; /* Seed rand */ rb->srand(*rb->current_tick); /* Make the matrix */ for (i = 0; i < ROWS; i++) { for (j = 0; j < COLS; j++) { matrix[i][j].val = -1; matrix[i][j].bold = 0; } } for (j = 0; j < COLS; j++) { /* Set up spaces[] array of how many spaces to skip */ spaces[j] = rb->rand() % ROWS + 1; /* And length of the stream */ length[j] = rb->rand() % (ROWS - 3) + 3; /* Sentinel value for creation of new objects */ matrix[1][j].val = 129; /* And set updates[] array for update speed. */ updates[j] = rb->rand() % 3 + 1; } } static void matrix_blit_char(const int row, const int col, int cha) { if (cha == 129 || cha == 2 || cha > MAXCHARS) cha = 0; if (matrix[row][col].bold == 1) { rb->lcd_bitmap_part(matrix_bold, cha*COL_W, 0, STRIDE( SCREEN_MAIN, BMPWIDTH_matrix_bold, BMPHEIGHT_matrix_bold), col*COL_W + LEFTMARGIN, row*COL_H + TOPMARGIN, COL_W, COL_H); } else { rb->lcd_bitmap_part(matrix_normal, cha*COL_W, 0, STRIDE( SCREEN_MAIN, BMPWIDTH_matrix_normal, BMPHEIGHT_matrix_normal), col*COL_W + LEFTMARGIN, row*COL_H + TOPMARGIN, COL_W, COL_H); } } static void matrix_loop(void) { int i, j = 0, y, z, firstcoldone = 0; static int count = 0; int randomness = 6; count++; if (count > 4) count = 1; for (j = 0; j < COLS; j++) { if (count > updates[j]) { /* New style scrolling */ if (matrix[0][j].val == -1 && matrix[1][j].val == 129 && spaces[j] > 0) { matrix[0][j].val = -1; spaces[j]--; } else if (matrix[0][j].val == -1 && matrix[1][j].val == 129){ length[j] = rb->rand() % (ROWS - 3) + 3; matrix[0][j].val = rb->rand() % (MAXCHARS-1) + 1; if (rb->rand() % 2 == 1) matrix[0][j].bold = 2; spaces[j] = rb->rand() % ROWS + 1; } i = 0; y = 0; firstcoldone = 0; while (i <= ROWS) { /* Skip over spaces */ /* this is whear the characters were disappearing */ /* while (i <= ROWS && (matrix[i][j].val == 129 || matrix[i][j].val == -1)) i++; */ /* A little more random now for spaces */ if (rb->rand() % randomness == 1){ while (i < ROWS && (matrix[i][j].val == 129 || matrix[i][j].val == -1)){ i++; randomness--; if(randomness <=1) randomness = 6;} }else{ randomness++; if(randomness >6) randomness = 6; } if (i >= ROWS) break; /* Go to the head of this collumn */ z = i; y = 0; while (i < ROWS && (matrix[i][j].val != 129 && matrix[i][j].val != -1)) { i++; y++; } if (i >= ROWS) { matrix[z][j].val = 129; matrix[ROWS - 1][j].bold = 1; matrix_blit_char(z - 1, j, matrix[z][j].val); continue; } matrix[i][j].val = rb->rand() % (MAXCHARS-1) + 1; if (i > 0 && matrix[i - 1][j].bold == 2) { matrix[i - 1][j].bold = 1; matrix[i][j].bold = 2; } /* If we're at the top of the collumn and it's reached its * full length (about to start moving down), we do this * to get it moving. This is also how we keep segments * not already growing from growing accidentally => */ if (y > length[j] || firstcoldone) { matrix[z][j].val = 129; matrix[0][j].val = -1; } firstcoldone = 1; i++; } for (i = 1; i < ROWS; i++) { if (matrix[i][j].val == 0 || matrix[i][j].bold == 2) { if (matrix[i][j].val == 0) matrix_blit_char(i - 1, j, 20); else matrix_blit_char(i - 1, j, matrix[i][j].val); } else { if (matrix[i][j].val == 1) matrix_blit_char(i - 1, j, 2); else if (matrix[i][j].val == -1) matrix_blit_char(i - 1, j, 129); else matrix_blit_char(i - 1, j, matrix[i][j].val); } } } } } enum plugin_status plugin_start(const void* parameter) { int button; int sleep = SLEEP; bool frozen = false; (void)parameter; rb->lcd_set_background(LCD_BLACK); rb->lcd_set_backdrop(NULL); rb->lcd_clear_display(); matrix_init(); while (1) { if (!frozen) { matrix_loop(); rb->lcd_update(); rb->sleep(sleep); } button = pluginlib_getaction(frozen ? TIMEOUT_BLOCK : TIMEOUT_NOBLOCK, plugin_contexts, ARRAYLEN(plugin_contexts)); switch(button) { case MATRIX_PAUSE: frozen = !frozen; break; case MATRIX_EXIT: case MATRIX_EXIT2: return PLUGIN_OK; break; case MATRIX_SLEEP_MORE: case MATRIX_SLEEP_MORE_REPEAT: /* Sleep longer */ sleep += SLEEP; break; case MATRIX_SLEEP_LESS: case MATRIX_SLEEP_LESS_REPEAT: /* Sleep less */ sleep -= SLEEP; if (sleep < 0) sleep = 0; break; default: if (rb->default_event_handler(button) == SYS_USB_CONNECTED) { return PLUGIN_USB_CONNECTED; } break; } } return PLUGIN_OK; }