diff options
| -rw-r--r-- | common/cmd_bmp.c | 118 | ||||
| -rw-r--r-- | include/bmp_layout.h | 77 | ||||
| -rw-r--r-- | include/cmd_bmp.h | 44 |
3 files changed, 239 insertions, 0 deletions
diff --git a/common/cmd_bmp.c b/common/cmd_bmp.c new file mode 100644 index 0000000..c6a16a4 --- /dev/null +++ b/common/cmd_bmp.c @@ -0,0 +1,118 @@ +/* + * (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) */ diff --git a/include/bmp_layout.h b/include/bmp_layout.h new file mode 100644 index 0000000..7285a26 --- /dev/null +++ b/include/bmp_layout.h @@ -0,0 +1,77 @@ +/* (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_ */ diff --git a/include/cmd_bmp.h b/include/cmd_bmp.h new file mode 100644 index 0000000..1f71578 --- /dev/null +++ b/include/cmd_bmp.h @@ -0,0 +1,44 @@ +/* (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 */ |