common/cmd_bmp.c

   1 /*
   2  * (C) Copyright 2002
   3  * Dtlev Zundel, DENX Software Engineering, dzu@denx.de.
   4  *
   5  * See file CREDITS for list of people who contributed to this
   6  * project.
   7  *
   8  * This program is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU General Public License as
  10  * published by the Free Software Foundation; either version 2 of
  11  * the License, or (at your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * along with this program; if not, write to the Free Software
  20  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  21  * MA 02111-1307 USA
  22  */
  23
  24 /*
  25  * BMP handling routines
  26  */
  27
  28 #include <common.h>
  29 #include <bmp_layout.h>
  30 #include <command.h>
  31
  32 #if (CONFIG_COMMANDS & CFG_CMD_BMP)
  33
  34 static int bmp_info (ulong addr);
  35 static int bmp_display (ulong addr);
  36
  37 /*
  38  * Subroutine:  do_bmp
  39  *
  40  * Description: Handler for 'bmp' command..
  41  *
  42  * Inputs:      argv[1] contains the subcommand
  43  *
  44  * Return:      None
  45  *
  46  */
  47 int do_bmp(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
  48 {
  49         ulong addr;
  50
  51         switch (argc) {
  52         case 2:         /* use load_addr as default address */
  53                 addr = load_addr;
  54                 break;
  55         case 3:         /* use argument */
  56                 addr = simple_strtoul(argv[2], NULL, 16);
  57                 break;
  58         default:
  59                 printf ("Usage:\n%s\n", cmdtp->usage);
  60                 return 1;
  61         }
  62
  63         /* Allow for short names
  64          * Adjust length if more sub-commands get added
  65          */
  66         if (strncmp(argv[1],"info",1) == 0) {
  67                 return (bmp_info(addr));
  68         } else if (strncmp(argv[1],"display",1) == 0) {
  69                 return (bmp_display(addr));
  70         } else {
  71                 printf ("Usage:\n%s\n", cmdtp->usage);
  72                 return 1;
  73         }
  74 }
  75
  76 cmd_tbl_t U_BOOT_CMD(BMP) = MK_CMD_ENTRY(
  77         "bmp",  3,      1,      do_bmp,
  78         "bmp     - manipulate BMP image data\n",
  79         "info <imageAddr>    - display image info\n"
  80         "bmp display <imageAddr> - display image\n"
  81 );
  82
  83 /*
  84  * Subroutine:  bmp_info
  85  *
  86  * Description: Show information about bmp file in memory
  87  *
  88  * Inputs:      addr            address of the bmp file
  89  *
  90  * Return:      None
  91  *
  92  */
  93 static int bmp_info(ulong addr)
  94 {
  95         bmp_image_t *bmp=(bmp_image_t *)addr;
  96         if (!((bmp->header.signature[0]=='B') &&
  97               (bmp->header.signature[1]=='M'))) {
  98                 printf("There is no valid bmp file at the given address\n");
  99                 return(1);
 100         }
 101         printf("Image size    : %d x %d\n", le32_to_cpu(bmp->header.width),
 102                le32_to_cpu(bmp->header.height));
 103         printf("Bits per pixel: %d\n", le16_to_cpu(bmp->header.bit_count));
 104         printf("Compression   : %d\n", le32_to_cpu(bmp->header.compression));
 105         return(0);
 106 }
 107
 108 /*
 109  * Subroutine:  bmp_display
 110  *
 111  * Description: Display bmp file located in memory
 112  *
 113  * Inputs:      addr            address of the bmp file
 114  *
 115  * Return:      None
 116  *
 117  */
 118 static int bmp_display(ulong addr)
 119 {
 120         extern int lcd_display_bitmap (ulong);
 121
 122         return (lcd_display_bitmap (addr));
 123 }
 124
 125 #endif /* (CONFIG_COMMANDS & CFG_CMD_BMP) */