common/cmd_bmp.c

   1 /*
   2  * (C) Copyright 2002
   3  * Detlev 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, int x, int y);
  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         int x = 0, y = 0;
  51
  52         switch (argc) {
  53         case 2:         /* use load_addr as default address */
  54                 addr = load_addr;
  55                 break;
  56         case 3:         /* use argument */
  57                 addr = simple_strtoul(argv[2], NULL, 16);
  58                 break;
  59         case 5:
  60                 addr = simple_strtoul(argv[2], NULL, 16);
  61                 x = simple_strtoul(argv[3], NULL, 10);
  62                 y = simple_strtoul(argv[4], NULL, 10);
  63                 break;
  64         default:
  65                 printf ("Usage:\n%s\n", cmdtp->usage);
  66                 return 1;
  67         }
  68
  69         /* Allow for short names
  70          * Adjust length if more sub-commands get added
  71          */
  72         if (strncmp(argv[1],"info",1) == 0) {
  73                 return (bmp_info(addr));
  74         } else if (strncmp(argv[1],"display",1) == 0) {
  75             return (bmp_display(addr, x, y));
  76         } else {
  77                 printf ("Usage:\n%s\n", cmdtp->usage);
  78                 return 1;
  79         }
  80 }
  81
  82 U_BOOT_CMD(
  83         bmp,    5,      1,      do_bmp,
  84         "bmp     - manipulate BMP image data\n",
  85         "info <imageAddr>          - display image info\n"
  86         "bmp display <imageAddr> [x y] - display image at x,y\n"
  87 );
  88
  89 /*
  90  * Subroutine:  bmp_info
  91  *
  92  * Description: Show information about bmp file in memory
  93  *
  94  * Inputs:      addr            address of the bmp file
  95  *
  96  * Return:      None
  97  *
  98  */
  99 static int bmp_info(ulong addr)
 100 {
 101         bmp_image_t *bmp=(bmp_image_t *)addr;
 102         if (!((bmp->header.signature[0]=='B') &&
 103               (bmp->header.signature[1]=='M'))) {
 104                 printf("There is no valid bmp file at the given address\n");
 105                 return(1);
 106         }
 107         printf("Image size    : %d x %d\n", le32_to_cpu(bmp->header.width),
 108                le32_to_cpu(bmp->header.height));
 109         printf("Bits per pixel: %d\n", le16_to_cpu(bmp->header.bit_count));
 110         printf("Compression   : %d\n", le32_to_cpu(bmp->header.compression));
 111         return(0);
 112 }
 113
 114 /*
 115  * Subroutine:  bmp_display
 116  *
 117  * Description: Display bmp file located in memory
 118  *
 119  * Inputs:      addr            address of the bmp file
 120  *
 121  * Return:      None
 122  *
 123  */
 124 static int bmp_display(ulong addr, int x, int y)
 125 {
 126 #if defined(CONFIG_LCD)
 127         extern int lcd_display_bitmap (ulong, int, int);
 128
 129         return (lcd_display_bitmap (addr, x, y));
 130 #elif defined(CONFIG_VIDEO)
 131         extern int video_display_bitmap (ulong, int, int);
 132         return (video_display_bitmap (addr, x, y));
 133 #else
 134 # error bmp_display() requires CONFIG_LCD or CONFIG_VIDEO
 135 #endif
 136 }
 137
 138 #endif /* (CONFIG_COMMANDS & CFG_CMD_BMP) */