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Add files needed for bitmap load support
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wdenk
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commit
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3 changed files with 239 additions and 0 deletions
118
common/cmd_bmp.c
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118
common/cmd_bmp.c
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/*
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* (C) Copyright 2002
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* Dtlev Zundel, DENX Software Engineering, dzu@denx.de.
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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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 as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*/
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/*
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* BMP handling routines
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*/
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#include <common.h>
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#include <bmp_layout.h>
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#include <command.h>
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#if (CONFIG_COMMANDS & CFG_CMD_BMP)
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static int bmp_info (ulong addr);
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static int bmp_display (ulong addr);
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/*
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* Subroutine: do_bmp
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*
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* Description: Handler for 'bmp' command..
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*
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* Inputs: argv[1] contains the subcommand
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*
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* Return: None
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*
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*/
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int do_bmp(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
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{
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ulong addr;
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switch (argc) {
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case 2: /* use load_addr as default address */
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addr = load_addr;
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break;
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case 3: /* use argument */
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addr = simple_strtoul(argv[2], NULL, 16);
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break;
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default:
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printf ("Usage:\n%s\n", cmdtp->usage);
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return 1;
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}
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/* Allow for short names
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* Adjust length if more sub-commands get added
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*/
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if (strncmp(argv[1],"info",1) == 0) {
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return (bmp_info(addr));
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} else if (strncmp(argv[1],"display",1) == 0) {
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return (bmp_display(addr));
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} else {
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printf ("Usage:\n%s\n", cmdtp->usage);
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return 1;
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}
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}
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/*
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* Subroutine: bmp_info
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*
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* Description: Show information about bmp file in memory
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*
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* Inputs: addr address of the bmp file
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*
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* Return: None
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*
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*/
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static int bmp_info(ulong addr)
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{
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bmp_image_t *bmp=(bmp_image_t *)addr;
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if (!((bmp->header.signature[0]=='B') &&
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(bmp->header.signature[1]=='M'))) {
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printf("There is no valid bmp file at the given address\n");
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return(1);
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}
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printf("Image size : %d x %d\n", le32_to_cpu(bmp->header.width),
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le32_to_cpu(bmp->header.height));
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printf("Bits per pixel: %d\n", le16_to_cpu(bmp->header.bit_count));
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printf("Compression : %d\n", le32_to_cpu(bmp->header.compression));
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return(0);
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}
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/*
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* Subroutine: bmp_display
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*
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* Description: Display bmp file located in memory
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*
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* Inputs: addr address of the bmp file
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*
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* Return: None
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*
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*/
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static int bmp_display(ulong addr)
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{
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extern int lcd_display_bitmap (ulong);
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return (lcd_display_bitmap (addr));
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}
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#endif /* (CONFIG_COMMANDS & CFG_CMD_BMP) */
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77
include/bmp_layout.h
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77
include/bmp_layout.h
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@ -0,0 +1,77 @@
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/* (C) Copyright 2002
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* Detlev Zundel, DENX Software Engineering, dzu@denx.de.
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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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 as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*/
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/************************************************************************/
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/* ** Layout of a bmp file */
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/************************************************************************/
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#ifndef _BMP_H_
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#define _BMP_H_
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typedef struct bmp_color_table_entry {
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__u8 blue;
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__u8 green;
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__u8 red;
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__u8 reserved;
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} __attribute__((packed)) bmp_color_table_entry_t;
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/* When accessing these fields, remember that they are stored in little
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endian format, so use linux macros, e.g. le32_to_cpu(width) */
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typedef struct bmp_header {
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/* Header */
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char signature[2];
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__u32 file_size;
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__u32 reserved;
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__u32 data_offset;
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/* InfoHeader */
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__u32 size;
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__u32 width;
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__u32 height;
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__u16 planes;
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__u16 bit_count;
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__u32 compression;
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__u32 image_size;
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__u32 x_pixels_per_m;
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__u32 y_pixels_per_m;
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__u32 colors_used;
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__u32 colors_important;
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/* ColorTable */
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} __attribute__((packed)) bmp_header_t;
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typedef struct bmp_image {
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bmp_header_t header;
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/* We use a zero sized array just as a placeholder for variable
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sized array */
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bmp_color_table_entry_t color_table[0];
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} bmp_image_t;
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/* Data in the bmp_image is aligned to this length */
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#define BMP_DATA_ALIGN 4
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/* Constants for the compression field */
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#define BMP_BI_RGB 0
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#define BMP_BI_RLE8 1
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#define BMP_BI_RLE4 2
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#endif /* _BMP_H_ */
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44
include/cmd_bmp.h
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44
include/cmd_bmp.h
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@ -0,0 +1,44 @@
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/* (C) Copyright 2002
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* Detlev Zundel, DENX Software Engineering, dzu@denx.de.
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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 as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*/
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/*
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* Bitmap display support
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*/
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#ifndef _CMD_BMP_H
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#define _CMD_BMP_H
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#include <common.h>
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#include <command.h>
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#if (CONFIG_COMMANDS & CFG_CMD_BMP)
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#define CMD_TBL_BMP MK_CMD_TBL_ENTRY( \
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"bmp", 3, 3, 1, do_bmp, \
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"bmp - manipulate BMP image data\n", \
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"\nbmp info <imageAddr> - display image info\n" \
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"bmp display <imageAddr> - display image\n" \
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),
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int do_bmp (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]);
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#else
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#define CMD_TBL_BMP
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#endif
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#endif /* _CMD_BMP_H */
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