apps/plugins/test_resize.c

   1 /***************************************************************************
   2  *             __________               __   ___.
   3  *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
   4  *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
   5  *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
   6  *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
   7  *                     \/            \/     \/    \/            \/
   8  * $Id$
   9  *
  10  * Copyright (C) 2007 Jonas Hurrelmann
  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
  22 /* Resizing test plugin. Loads /test.bmp (max 100x100) and displays a resized
  23  * version. Use the scrollwheel or the left/right keys to change the size of
  24  * the resizded version.
  25  */
  26
  27 #include "plugin.h"
  28 #include "lib/pluginlib_actions.h"
  29 #include "lib/pluginlib_bmp.h"
  30
  31 PLUGIN_HEADER
  32
  33 const struct button_mapping *plugin_contexts[]
  34 = {generic_actions, generic_directions};
  35
  36 #define NB_ACTION_CONTEXTS sizeof(plugin_contexts)/sizeof(plugin_contexts[0])
  37
  38 /* Key assignement */
  39 #define SIZE_INCREASE           PLA_UP
  40 #define SIZE_INCREASE_REPEAT    PLA_UP_REPEAT
  41 #define SIZE_DECREASE           PLA_DOWN
  42 #define SIZE_DECREASE_REPEAT    PLA_DOWN_REPEAT
  43
  44 #define WIDTH_INCREASE           PLA_RIGHT
  45 #define WIDTH_INCREASE_REPEAT    PLA_RIGHT_REPEAT
  46 #define WIDTH_DECREASE           PLA_LEFT
  47 #define WIDTH_DECREASE_REPEAT    PLA_LEFT_REPEAT
  48
  49 #define BUTTON_QUIT             PLA_QUIT
  50 #define CHANGE_MODE             PLA_MENU
  51
  52 #define MAX_OUTPUT_WIDTH    LCD_WIDTH
  53 #define MAX_OUTPUT_HEIGHT   LCD_HEIGHT
  54
  55 static fb_data *b;
  56
  57 static struct bitmap input_bmp;
  58 static struct bitmap output_bmp;
  59
  60 static fb_data input_bmp_data[200*200];
  61 static fb_data output_bmp_data[MAX_OUTPUT_WIDTH*MAX_OUTPUT_HEIGHT];
  62
  63
  64 /* this is the plugin entry point */
  65 enum plugin_status plugin_start(const void* parameter)
  66 {
  67     (void)parameter;
  68
  69     b = rb->lcd_framebuffer;
  70
  71     rb->lcd_set_background(LCD_RGBPACK(0,0,0));
  72     rb->lcd_clear_display(); // TODO: Optimizes this by e.g. invalidating rects
  73
  74     input_bmp.data = (char*)input_bmp_data;
  75     output_bmp.data = (char*)output_bmp_data;
  76
  77     int ret = rb->read_bmp_file("/test.bmp", &input_bmp, sizeof(input_bmp_data),
  78                                 FORMAT_NATIVE, NULL);
  79
  80     if (ret < 0) {
  81         rb->splash(HZ, "Could not load /test.bmp");
  82         return PLUGIN_ERROR;
  83     }
  84
  85     int button;
  86     output_bmp.width = 50;
  87     output_bmp.height = 50;
  88
  89     DEBUGF("input_bmp_data starts at %p\n", input_bmp_data);
  90     DEBUGF("output_bmp_data starts at %p\n", output_bmp_data);
  91
  92     int scale_algorithm = 0;
  93
  94     while(1) {
  95         rb->lcd_clear_display();
  96         rb->lcd_bitmap(input_bmp_data, 0, 0, input_bmp.width, input_bmp.height);
  97
  98         switch ( scale_algorithm ) {
  99             case 0:
 100                 smooth_resize_bitmap(&input_bmp, &output_bmp);
 101                 rb->lcd_putsxy(0,0,"smooth_resize_bitmap");
 102                 break;
 103             case 1:
 104                 simple_resize_bitmap(&input_bmp, &output_bmp);
 105                 rb->lcd_putsxy(0,0,"simple_resize_bitmap");
 106                 break;
 107         }
 108
 109         rb->lcd_bitmap(output_bmp_data, 0, 100, output_bmp.width,
 110                        output_bmp.height);
 111
 112         rb->lcd_update();
 113         button = pluginlib_getaction(HZ,
 114                                      plugin_contexts, NB_ACTION_CONTEXTS);
 115         switch (button) {
 116             case BUTTON_QUIT:
 117                 return PLUGIN_OK;
 118             case SIZE_INCREASE:
 119             case SIZE_INCREASE_REPEAT:
 120                 if (output_bmp.width < MAX_OUTPUT_WIDTH - 2)
 121                     output_bmp.width += 2;
 122                 if (output_bmp.height < MAX_OUTPUT_HEIGHT - 2)
 123                     output_bmp.height += 2;
 124                 break;
 125
 126             case SIZE_DECREASE:
 127             case SIZE_DECREASE_REPEAT:
 128                 if (output_bmp.width > 2) output_bmp.width -= 2;
 129                 if (output_bmp.height > 2) output_bmp.height -= 2;
 130                 break;
 131
 132             case WIDTH_INCREASE:
 133             case WIDTH_INCREASE_REPEAT:
 134                 if (output_bmp.width < MAX_OUTPUT_WIDTH - 2)
 135                     output_bmp.width += 2;
 136                 break;
 137
 138             case WIDTH_DECREASE:
 139             case WIDTH_DECREASE_REPEAT:
 140                 if (output_bmp.width > 2) output_bmp.width -= 2;
 141                 break;
 142
 143             case CHANGE_MODE:
 144                 scale_algorithm = (scale_algorithm+1)%2;
 145                 break;
 146         }
 147     }
 148     return PLUGIN_OK;
 149 }