abdc5935be
It handles exit() properly, calling the handler also when the plugin returns normally (also it makes exit() more standard compliant while at it). It also holds PLUGIN_HEADER, so that it doesn't need to be in each plugin anymore. To work better together with callbacks passed to rb->default_event_handler_ex introduce exit_on_usb() which will call the exit handler before showing the usb screen and exit() after it. In most cases it was passed a callback which was manually called at all other return points. This can now be done via atexit(). In future plugin_crt0.c could also handle clearing bss, initializing iram and more. git-svn-id: svn://svn.rockbox.org/rockbox/trunk@27862 a1c6a512-1295-4272-9138-f99709370657
148 lines
4.7 KiB
C
148 lines
4.7 KiB
C
/***************************************************************************
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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) 2007 Jonas Hurrelmann
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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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/* Resizing test plugin. Loads /test.bmp (max 100x100) and displays a resized
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* version. Use the scrollwheel or the left/right keys to change the size of
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* the resizded version.
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*/
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#include "plugin.h"
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#include "lib/pluginlib_actions.h"
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#include "lib/pluginlib_bmp.h"
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const struct button_mapping *plugin_contexts[]
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= {pla_main_ctx};
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/* Key assignement */
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#define SIZE_INCREASE PLA_UP
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#define SIZE_INCREASE_REPEAT PLA_UP_REPEAT
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#define SIZE_DECREASE PLA_DOWN
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#define SIZE_DECREASE_REPEAT PLA_DOWN_REPEAT
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#define WIDTH_INCREASE PLA_RIGHT
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#define WIDTH_INCREASE_REPEAT PLA_RIGHT_REPEAT
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#define WIDTH_DECREASE PLA_LEFT
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#define WIDTH_DECREASE_REPEAT PLA_LEFT_REPEAT
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#define BUTTON_QUIT PLA_EXIT
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#define CHANGE_MODE PLA_SELECT
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#define MAX_OUTPUT_WIDTH LCD_WIDTH
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#define MAX_OUTPUT_HEIGHT LCD_HEIGHT
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static fb_data *b;
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static struct bitmap input_bmp;
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static struct bitmap output_bmp;
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static fb_data input_bmp_data[200*200];
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static fb_data output_bmp_data[MAX_OUTPUT_WIDTH*MAX_OUTPUT_HEIGHT];
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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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(void)parameter;
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b = rb->lcd_framebuffer;
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rb->lcd_set_background(LCD_RGBPACK(0,0,0));
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rb->lcd_clear_display(); // TODO: Optimizes this by e.g. invalidating rects
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input_bmp.data = (char*)input_bmp_data;
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output_bmp.data = (char*)output_bmp_data;
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int ret = rb->read_bmp_file("/test.bmp", &input_bmp, sizeof(input_bmp_data),
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FORMAT_NATIVE, NULL);
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if (ret < 0) {
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rb->splash(HZ, "Could not load /test.bmp");
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return PLUGIN_ERROR;
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}
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int button;
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output_bmp.width = 50;
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output_bmp.height = 50;
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DEBUGF("input_bmp_data starts at %p\n", input_bmp_data);
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DEBUGF("output_bmp_data starts at %p\n", output_bmp_data);
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int scale_algorithm = 0;
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while(1) {
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rb->lcd_clear_display();
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rb->lcd_bitmap(input_bmp_data, 0, 0, input_bmp.width, input_bmp.height);
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switch ( scale_algorithm ) {
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case 0:
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smooth_resize_bitmap(&input_bmp, &output_bmp);
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rb->lcd_putsxy(0,0,"smooth_resize_bitmap");
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break;
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case 1:
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simple_resize_bitmap(&input_bmp, &output_bmp);
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rb->lcd_putsxy(0,0,"simple_resize_bitmap");
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break;
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}
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rb->lcd_bitmap(output_bmp_data, 0, 100, output_bmp.width,
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output_bmp.height);
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rb->lcd_update();
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button = pluginlib_getaction(HZ, plugin_contexts,
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ARRAYLEN(plugin_contexts));
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switch (button) {
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case BUTTON_QUIT:
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return PLUGIN_OK;
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case SIZE_INCREASE:
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case SIZE_INCREASE_REPEAT:
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if (output_bmp.width < MAX_OUTPUT_WIDTH - 2)
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output_bmp.width += 2;
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if (output_bmp.height < MAX_OUTPUT_HEIGHT - 2)
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output_bmp.height += 2;
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break;
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case SIZE_DECREASE:
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case SIZE_DECREASE_REPEAT:
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if (output_bmp.width > 2) output_bmp.width -= 2;
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if (output_bmp.height > 2) output_bmp.height -= 2;
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break;
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case WIDTH_INCREASE:
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case WIDTH_INCREASE_REPEAT:
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if (output_bmp.width < MAX_OUTPUT_WIDTH - 2)
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output_bmp.width += 2;
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break;
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case WIDTH_DECREASE:
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case WIDTH_DECREASE_REPEAT:
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if (output_bmp.width > 2) output_bmp.width -= 2;
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break;
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case CHANGE_MODE:
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scale_algorithm = (scale_algorithm+1)%2;
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break;
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}
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}
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return PLUGIN_OK;
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}
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