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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) */ |
@ -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_ */ |
@ -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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