104 lines
3.2 KiB
C
104 lines
3.2 KiB
C
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/*****************************************************************************
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* __________ __ ___.
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* Open \______ \ ____ ____ | | _\_ |__ _______ ___
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* Source | _// __ \_/ ___\| |/ /| __ \ / __ \ \/ /
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* Jukebox | | ( (__) ) \___| ( | \_\ ( (__) ) (
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* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
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* \/ \/ \/ \/ \/
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* $Id$
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*
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* Copyright (C) 2009 Andrew Mahone
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*
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* In-memory JPEG decode test.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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****************************************************************************/
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#include "plugin.h"
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#include "lib/grey.h"
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#include "lib/jpeg_mem.h"
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PLUGIN_HEADER
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/* different graphics libraries */
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#if LCD_DEPTH < 8
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#define USEGSLIB
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GREY_INFO_STRUCT
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#define MYLCD(fn) grey_ub_ ## fn
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#define MYLCD_UPDATE()
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#define MYXLCD(fn) grey_ub_ ## fn
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#define CFORMAT &format_grey
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#else
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#define MYLCD(fn) rb->lcd_ ## fn
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#define MYLCD_UPDATE() rb->lcd_update();
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#define MYXLCD(fn) xlcd_ ## fn
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#define CFORMAT &format_native
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#endif
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/* this is the plugin entry point */
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enum plugin_status plugin_start(const void* parameter)
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{
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size_t plugin_buf_len;
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unsigned char * plugin_buf =
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(unsigned char *)rb->plugin_get_buffer(&plugin_buf_len);
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static char filename[MAX_PATH];
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struct bitmap bm = {
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.width = LCD_WIDTH,
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.height = LCD_HEIGHT,
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};
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int ret;
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if(!parameter) return PLUGIN_ERROR;
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rb->strcpy(filename, parameter);
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#ifdef USEGSLIB
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long greysize;
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if (!grey_init(plugin_buf, plugin_buf_len, GREY_ON_COP,
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LCD_WIDTH, LCD_HEIGHT, &greysize))
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{
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rb->splash(HZ, "grey buf error");
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return PLUGIN_ERROR;
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}
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plugin_buf += greysize;
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plugin_buf_len -= greysize;
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#endif
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int fd = rb->open(filename, O_RDONLY);
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if (fd < 0)
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return PLUGIN_ERROR;
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unsigned long filesize = rb->filesize(fd);
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if (filesize > plugin_buf_len)
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return PLUGIN_ERROR;
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plugin_buf_len -= filesize;
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unsigned char *jpeg_buf = plugin_buf;
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plugin_buf += filesize;
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rb->read(fd, jpeg_buf, filesize);
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rb->close(fd);
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bm.data = plugin_buf;
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ret = decode_jpeg_mem(jpeg_buf, filesize, &bm, plugin_buf_len,
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FORMAT_NATIVE|FORMAT_RESIZE|FORMAT_KEEP_ASPECT,
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CFORMAT);
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if (ret < 1)
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return PLUGIN_ERROR;
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#ifdef USEGSLIB
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grey_show(true);
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grey_ub_gray_bitmap((fb_data *)bm.data, (LCD_WIDTH - bm.width) >> 1,
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(LCD_HEIGHT - bm.height) >> 1, bm.width, bm.height);
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#else
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rb->lcd_bitmap((fb_data *)bm.data, (LCD_WIDTH - bm.width) >> 1,
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(LCD_HEIGHT - bm.height) >> 1, bm.width, bm.height);
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#endif
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MYLCD_UPDATE();
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while (rb->get_action(CONTEXT_STD,1) != ACTION_STD_OK) rb->yield();
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#ifdef USEGSLIB
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grey_release();
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#endif
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return PLUGIN_OK;
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}
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