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