apps/plugins/test_greylib_bitmap_scale.c

   1 /*****************************************************************************
   2  *             __________               __   ___.
   3  *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
   4  *   Source     |       _// __ \_/ ___\|  |/ /| __ \ / __ \  \/  /
   5  *   Jukebox    |    |   ( (__) )  \___|    ( | \_\ ( (__) )    (
   6  *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
   7  *                     \/            \/     \/    \/            \/
   8  * $Id$
   9  *
  10  * Copyright (C) 2008 Andrew Mahone
  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 #include "plugin.h"
  23 #include "lib/grey.h"
  24 #include "lib/pluginlib_bmp.h"
  25
  26 #if (CONFIG_KEYPAD == IPOD_4G_PAD) || (CONFIG_KEYPAD == IPOD_3G_PAD) || \
  27     (CONFIG_KEYPAD == IPOD_1G2G_PAD)
  28 #define GBS_QUIT BUTTON_MENU
  29 #elif CONFIG_KEYPAD == IAUDIO_M3_PAD
  30 #define GBS_QUIT BUTTON_RC_REC
  31 #elif defined(BUTTON_OFF)
  32 #define GBS_QUIT BUTTON_OFF
  33 #else
  34 #define GBS_QUIT BUTTON_POWER
  35 #endif
  36
  37 #if LCD_DEPTH == 1
  38 #define BMP_LOAD read_bmp_file
  39 #else
  40 #define BMP_LOAD rb->read_bmp_file
  41 #endif
  42
  43 PLUGIN_HEADER
  44 GREY_INFO_STRUCT
  45 static unsigned char grey_bm_buf[LCD_WIDTH * LCD_HEIGHT +
  46                    BM_SCALED_SIZE(LCD_WIDTH,0,FORMAT_NATIVE,0)];
  47
  48 /* this is the plugin entry point */
  49 enum plugin_status plugin_start(const void* parameter)
  50 {
  51     void * plugin_buf;
  52     size_t plugin_buf_len;
  53     static char filename[MAX_PATH];
  54     struct bitmap grey_bm = {
  55         .width = LCD_WIDTH,
  56         .height = LCD_HEIGHT,
  57         .data = grey_bm_buf
  58     };
  59     int ret, x, y;
  60
  61     if(!parameter) return PLUGIN_ERROR;
  62
  63     rb->strcpy(filename, parameter);
  64
  65     ret = BMP_LOAD(filename, &grey_bm, sizeof(grey_bm_buf),
  66                    FORMAT_NATIVE|FORMAT_RESIZE|FORMAT_KEEP_ASPECT,
  67                    &format_grey);
  68
  69     if(ret < 1)
  70     {
  71         rb->splash(HZ*2, "failed to load bitmap");
  72         return PLUGIN_ERROR;
  73     }
  74
  75     plugin_buf = rb->plugin_get_buffer(&plugin_buf_len);
  76     if(!grey_init(plugin_buf, plugin_buf_len, 0, LCD_WIDTH, LCD_HEIGHT,
  77                   NULL))
  78     {
  79         rb->splash(HZ*2,"grey init failed");
  80         return PLUGIN_ERROR;
  81     }
  82     grey_ub_clear_display();
  83     x = (LCD_WIDTH - grey_bm.width) / 2;
  84     y = (LCD_HEIGHT - grey_bm.height) / 2;
  85     grey_ub_gray_bitmap(grey_bm_buf, x, y, grey_bm.width, grey_bm.height);
  86     grey_show(true);
  87
  88     /* wait until user closes plugin */
  89     while (rb->button_get(true) != GBS_QUIT);
  90
  91     grey_release();
  92
  93     return PLUGIN_OK;
  94 }