rockbox/apps/plugins/test_greylib_bitmap_scale.c
Thomas Martitz cae4ae2c71 Second try: Introduce plugin_crt0.c that every plugin links.
It handles exit() properly, calling the handler also when the plugin returns
normally (also make 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 rb->default_event_handler_ex() 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@27873 a1c6a512-1295-4272-9138-f99709370657
2010-08-24 14:30:46 +00:00

98 lines
2.9 KiB
C

/*****************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// __ \_/ ___\| |/ /| __ \ / __ \ \/ /
* Jukebox | | ( (__) ) \___| ( | \_\ ( (__) ) (
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2008 Andrew Mahone
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
****************************************************************************/
#include "plugin.h"
#include "lib/grey.h"
#include "lib/pluginlib_bmp.h"
#if (CONFIG_KEYPAD == IPOD_4G_PAD) || (CONFIG_KEYPAD == IPOD_3G_PAD) || \
(CONFIG_KEYPAD == IPOD_1G2G_PAD)
#define GBS_QUIT BUTTON_MENU
#elif CONFIG_KEYPAD == IAUDIO_M3_PAD
#define GBS_QUIT BUTTON_RC_REC
#elif CONFIG_KEYPAD == SAMSUNG_YH_PAD
#define GBS_QUIT BUTTON_PLAY
#elif CONFIG_KEYPAD == MPIO_HD200_PAD
#define GBS_QUIT (BUTTON_REC|BUTTON_PLAY)
#elif defined(BUTTON_OFF)
#define GBS_QUIT BUTTON_OFF
#else
#define GBS_QUIT BUTTON_POWER
#endif
#if LCD_DEPTH == 1
#define BMP_LOAD read_bmp_file
#else
#define BMP_LOAD rb->read_bmp_file
#endif
GREY_INFO_STRUCT
static unsigned char grey_bm_buf[LCD_WIDTH * LCD_HEIGHT +
BM_SCALED_SIZE(LCD_WIDTH,0,FORMAT_NATIVE,0)];
/* this is the plugin entry point */
enum plugin_status plugin_start(const void* parameter)
{
void * plugin_buf;
size_t plugin_buf_len;
static char filename[MAX_PATH];
struct bitmap grey_bm = {
.width = LCD_WIDTH,
.height = LCD_HEIGHT,
.data = grey_bm_buf
};
int ret, x, y;
if(!parameter) return PLUGIN_ERROR;
rb->strcpy(filename, parameter);
ret = BMP_LOAD(filename, &grey_bm, sizeof(grey_bm_buf),
FORMAT_NATIVE|FORMAT_RESIZE|FORMAT_KEEP_ASPECT,
&format_grey);
if(ret < 1)
{
rb->splash(HZ*2, "failed to load bitmap");
return PLUGIN_ERROR;
}
plugin_buf = rb->plugin_get_buffer(&plugin_buf_len);
if(!grey_init(plugin_buf, plugin_buf_len, 0, LCD_WIDTH, LCD_HEIGHT,
NULL))
{
rb->splash(HZ*2,"grey init failed");
return PLUGIN_ERROR;
}
grey_ub_clear_display();
x = (LCD_WIDTH - grey_bm.width) / 2;
y = (LCD_HEIGHT - grey_bm.height) / 2;
grey_ub_gray_bitmap(grey_bm_buf, x, y, grey_bm.width, grey_bm.height);
grey_show(true);
/* wait until user closes plugin */
while (rb->button_get(true) != GBS_QUIT);
grey_release();
return PLUGIN_OK;
}