apps/plugins/test_core_jpeg.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 PLUGIN_HEADER
  25
  26 /* different graphics libraries */
  27 #if LCD_DEPTH < 8
  28 #define USEGSLIB
  29 GREY_INFO_STRUCT
  30 #define MYLCD(fn) grey_ub_ ## fn
  31 #define MYLCD_UPDATE()
  32 #define MYXLCD(fn) grey_ub_ ## fn
  33 #define CFORMAT &format_grey
  34 #else
  35 #define MYLCD(fn) rb->lcd_ ## fn
  36 #define MYLCD_UPDATE() rb->lcd_update();
  37 #define MYXLCD(fn) xlcd_ ## fn
  38 #define CFORMAT NULL
  39 #endif
  40
  41 /* this is the plugin entry point */
  42 enum plugin_status plugin_start(const void* parameter)
  43 {
  44     size_t plugin_buf_len;
  45     unsigned char * plugin_buf =
  46         (unsigned char *)rb->plugin_get_buffer(&plugin_buf_len);
  47     static char filename[MAX_PATH];
  48     struct bitmap bm = {
  49         .width = LCD_WIDTH,
  50         .height = LCD_HEIGHT,
  51     };
  52     int ret;
  53
  54     if(!parameter) return PLUGIN_ERROR;
  55
  56     rb->strcpy(filename, parameter);
  57
  58 #ifdef USEGSLIB
  59     long greysize;
  60     if (!grey_init(plugin_buf, plugin_buf_len, GREY_ON_COP,
  61                    LCD_WIDTH, LCD_HEIGHT, &greysize))
  62     {
  63         rb->splash(HZ, "grey buf error");
  64         return PLUGIN_ERROR;
  65     }
  66     plugin_buf += greysize;
  67     plugin_buf_len -= greysize;
  68 #endif
  69     bm.data = plugin_buf;
  70     ret = rb->read_jpeg_file(filename, &bm, plugin_buf_len,
  71                    FORMAT_NATIVE|FORMAT_RESIZE|FORMAT_KEEP_ASPECT,
  72                    CFORMAT);
  73     if (ret < 1)
  74         return PLUGIN_ERROR;
  75 #ifdef USEGSLIB
  76     grey_show(true);
  77     grey_ub_gray_bitmap((fb_data *)bm.data, (LCD_WIDTH - bm.width) >> 1,
  78         (LCD_HEIGHT - bm.height) >> 1, bm.width, bm.height);
  79 #else
  80     rb->lcd_bitmap((fb_data *)bm.data, (LCD_WIDTH - bm.width) >> 1,
  81         (LCD_HEIGHT - bm.height) >> 1, bm.width, bm.height);
  82 #endif
  83     MYLCD_UPDATE();
  84     while (rb->get_action(CONTEXT_STD,1) != ACTION_STD_OK) rb->yield();
  85 #ifdef USEGSLIB
  86     grey_release();
  87 #endif
  88     return PLUGIN_OK;
  89 }