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  * All files in this archive are subject to the GNU General Public License.
  13  * See the file COPYING in the source tree root for full license agreement.
  14  *
  15  * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
  16  * KIND, either express or implied.
  17  *
  18  ****************************************************************************/
  19
  20 /* Resizing test plugin. Loads /test.bmp (max 100x100) and displays a resized
  21  * version. Use the scrollwheel or the left/right keys to change the size of
  22  * the resizded version.
  23  */
  24
  25 #include "plugin.h"
  26 #include "pluginlib_actions.h"
  27 #include "bmp.h"
  28
  29 PLUGIN_HEADER
  30
  31 static struct plugin_api* rb;
  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 #if (CONFIG_KEYPAD == IPOD_1G2G_PAD) \
  40  || (CONFIG_KEYPAD == IPOD_3G_PAD) \
  41  || (CONFIG_KEYPAD == IPOD_4G_PAD) \
  42  || (CONFIG_KEYPAD == SANSA_E200_PAD)
  43 #define SIZE_INCREASE           PLA_UP
  44 #define SIZE_INCREASE_REPEAT    PLA_UP_REPEAT
  45 #define SIZE_DECREASE           PLA_DOWN
  46 #define SIZE_DECREASE_REPEAT    PLA_DOWN_REPEAT
  47 #else
  48 #define SIZE_INCREASE           PLA_RIGHT
  49 #define SIZE_INCREASE_REPEAT    PLA_RIGHT_REPEAT
  50 #define SIZE_DECREASE           PLA_LEFT
  51 #define SIZE_DECREASE_REPEAT    PLA_LEFT_REPEAT
  52 #endif
  53 #define BUTTON_QUIT             PLA_QUIT
  54
  55 #define MAX_OUTPUT_WIDTH    200
  56 #define MAX_OUTPUT_HEIGHT   200
  57
  58 static fb_data *b;
  59
  60 static struct bitmap input_bmp;
  61 static struct bitmap output_bmp;
  62
  63 static fb_data input_bmp_data[100*100];
  64 static fb_data output_bmp_data[MAX_OUTPUT_WIDTH*MAX_OUTPUT_HEIGHT];
  65
  66
  67 /* this is the plugin entry point */
  68 enum plugin_status plugin_start(struct plugin_api* api, void* parameter)
  69 {
  70     (void)parameter;
  71
  72     rb = api;
  73     b = rb->lcd_framebuffer;
  74
  75     rb->lcd_set_background(LCD_RGBPACK(0,0,0));
  76     rb->lcd_clear_display(); // TODO: Optimizes this by e.g. invalidating rects
  77
  78     input_bmp.data = (char*)input_bmp_data;
  79     output_bmp.data = (char*)output_bmp_data;
  80
  81     int ret = rb->read_bmp_file("/test.bmp", &input_bmp, sizeof(input_bmp_data),
  82                                 FORMAT_NATIVE);
  83
  84     if (ret < 0) {
  85         rb->splash(HZ, "Could not load /test.bmp");
  86         return PLUGIN_ERROR;
  87     }
  88
  89     int button;
  90     output_bmp.width = 50;
  91     output_bmp.height = 50;
  92
  93     DEBUGF("input_bmp_data starts at %p\n", input_bmp_data);
  94     DEBUGF("output_bmp_data starts at %p\n", output_bmp_data);
  95
  96     while(1) {
  97         rb->lcd_clear_display();
  98         rb->lcd_bitmap(input_bmp_data, 0, 0, input_bmp.width, input_bmp.height);
  99
 100         simple_resize_bitmap(&input_bmp, &output_bmp);
 101
 102         rb->lcd_bitmap(output_bmp_data, 0, 100, output_bmp.width,
 103                        output_bmp.height);
 104
 105         rb->lcd_update();
 106         button = pluginlib_getaction(rb, HZ,
 107                                      plugin_contexts, NB_ACTION_CONTEXTS);
 108         switch (button) {
 109             case BUTTON_QUIT:
 110                 return PLUGIN_OK;
 111             case SIZE_INCREASE:
 112             case SIZE_INCREASE_REPEAT:
 113                 if (output_bmp.width < MAX_OUTPUT_WIDTH - 2)
 114                     output_bmp.width += 2;
 115                 if (output_bmp.height < MAX_OUTPUT_HEIGHT - 2)
 116                     output_bmp.height += 2;
 117                 break;
 118
 119             case SIZE_DECREASE:
 120             case SIZE_DECREASE_REPEAT:
 121                 if (output_bmp.width >= 2) output_bmp.width -= 2;
 122                 if (output_bmp.height >= 2) output_bmp.height -= 2;
 123                 break;
 124         }
 125     }
 126     return PLUGIN_OK;
 127 }