Commit 059ae173 authored by wdenk's avatar wdenk
Browse files

Add files needed for bitmap load support

parent 824a1ebf
/*
* (C) Copyright 2002
* Dtlev Zundel, DENX Software Engineering, dzu@denx.de.
*
* See file CREDITS for list of people who contributed to this
* project.
*
* 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 program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*/
/*
* BMP handling routines
*/
#include <common.h>
#include <bmp_layout.h>
#include <command.h>
#if (CONFIG_COMMANDS & CFG_CMD_BMP)
static int bmp_info (ulong addr);
static int bmp_display (ulong addr);
/*
* Subroutine: do_bmp
*
* Description: Handler for 'bmp' command..
*
* Inputs: argv[1] contains the subcommand
*
* Return: None
*
*/
int do_bmp(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
{
ulong addr;
switch (argc) {
case 2: /* use load_addr as default address */
addr = load_addr;
break;
case 3: /* use argument */
addr = simple_strtoul(argv[2], NULL, 16);
break;
default:
printf ("Usage:\n%s\n", cmdtp->usage);
return 1;
}
/* Allow for short names
* Adjust length if more sub-commands get added
*/
if (strncmp(argv[1],"info",1) == 0) {
return (bmp_info(addr));
} else if (strncmp(argv[1],"display",1) == 0) {
return (bmp_display(addr));
} else {
printf ("Usage:\n%s\n", cmdtp->usage);
return 1;
}
}
/*
* Subroutine: bmp_info
*
* Description: Show information about bmp file in memory
*
* Inputs: addr address of the bmp file
*
* Return: None
*
*/
static int bmp_info(ulong addr)
{
bmp_image_t *bmp=(bmp_image_t *)addr;
if (!((bmp->header.signature[0]=='B') &&
(bmp->header.signature[1]=='M'))) {
printf("There is no valid bmp file at the given address\n");
return(1);
}
printf("Image size : %d x %d\n", le32_to_cpu(bmp->header.width),
le32_to_cpu(bmp->header.height));
printf("Bits per pixel: %d\n", le16_to_cpu(bmp->header.bit_count));
printf("Compression : %d\n", le32_to_cpu(bmp->header.compression));
return(0);
}
/*
* Subroutine: bmp_display
*
* Description: Display bmp file located in memory
*
* Inputs: addr address of the bmp file
*
* Return: None
*
*/
static int bmp_display(ulong addr)
{
extern int lcd_display_bitmap (ulong);
return (lcd_display_bitmap (addr));
}
#endif /* (CONFIG_COMMANDS & CFG_CMD_BMP) */
/* (C) Copyright 2002
* Detlev Zundel, DENX Software Engineering, dzu@denx.de.
*
* See file CREDITS for list of people who contributed to this
* project.
*
* 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 program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*/
/************************************************************************/
/* ** Layout of a bmp file */
/************************************************************************/
#ifndef _BMP_H_
#define _BMP_H_
typedef struct bmp_color_table_entry {
__u8 blue;
__u8 green;
__u8 red;
__u8 reserved;
} __attribute__((packed)) bmp_color_table_entry_t;
/* When accessing these fields, remember that they are stored in little
endian format, so use linux macros, e.g. le32_to_cpu(width) */
typedef struct bmp_header {
/* Header */
char signature[2];
__u32 file_size;
__u32 reserved;
__u32 data_offset;
/* InfoHeader */
__u32 size;
__u32 width;
__u32 height;
__u16 planes;
__u16 bit_count;
__u32 compression;
__u32 image_size;
__u32 x_pixels_per_m;
__u32 y_pixels_per_m;
__u32 colors_used;
__u32 colors_important;
/* ColorTable */
} __attribute__((packed)) bmp_header_t;
typedef struct bmp_image {
bmp_header_t header;
/* We use a zero sized array just as a placeholder for variable
sized array */
bmp_color_table_entry_t color_table[0];
} bmp_image_t;
/* Data in the bmp_image is aligned to this length */
#define BMP_DATA_ALIGN 4
/* Constants for the compression field */
#define BMP_BI_RGB 0
#define BMP_BI_RLE8 1
#define BMP_BI_RLE4 2
#endif /* _BMP_H_ */
/* (C) Copyright 2002
* Detlev Zundel, DENX Software Engineering, dzu@denx.de.
*
* 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 program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*/
/*
* Bitmap display support
*/
#ifndef _CMD_BMP_H
#define _CMD_BMP_H
#include <common.h>
#include <command.h>
#if (CONFIG_COMMANDS & CFG_CMD_BMP)
#define CMD_TBL_BMP MK_CMD_TBL_ENTRY( \
"bmp", 3, 3, 1, do_bmp, \
"bmp - manipulate BMP image data\n", \
"\nbmp info <imageAddr> - display image info\n" \
"bmp display <imageAddr> - display image\n" \
),
int do_bmp (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]);
#else
#define CMD_TBL_BMP
#endif
#endif /* _CMD_BMP_H */
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