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 #include <asm/byteorder.h>
  32 #include <malloc.h>
  33
  34 static int bmp_info (ulong addr);
  35 static int bmp_display (ulong addr, int x, int y);
  36
  37 int gunzip(void *, int, unsigned char *, unsigned long *);
  38
  39 /*
  40  * Subroutine:  do_bmp
  41  *
  42  * Description: Handler for 'bmp' command..
  43  *
  44  * Inputs:      argv[1] contains the subcommand
  45  *
  46  * Return:      None
  47  *
  48  */
  49 int do_bmp(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
  50 {
  51         ulong addr;
  52         int x = 0, y = 0;
  53
  54         switch (argc) {
  55         case 2:         /* use load_addr as default address */
  56                 addr = load_addr;
  57                 break;
  58         case 3:         /* use argument */
  59                 addr = simple_strtoul(argv[2], NULL, 16);
  60                 break;
  61         case 5:
  62                 addr = simple_strtoul(argv[2], NULL, 16);
  63                 x = simple_strtoul(argv[3], NULL, 10);
  64                 y = simple_strtoul(argv[4], NULL, 10);
  65                 break;
  66         default:
  67                 printf ("Usage:\n%s\n", cmdtp->usage);
  68                 return 1;
  69         }
  70
  71         /* Allow for short names
  72          * Adjust length if more sub-commands get added
  73          */
  74         if (strncmp(argv[1],"info",1) == 0) {
  75                 return (bmp_info(addr));
  76         } else if (strncmp(argv[1],"display",1) == 0) {
  77             return (bmp_display(addr, x, y));
  78         } else {
  79                 printf ("Usage:\n%s\n", cmdtp->usage);
  80                 return 1;
  81         }
  82 }
  83
  84 U_BOOT_CMD(
  85         bmp,    5,      1,      do_bmp,
  86         "bmp     - manipulate BMP image data\n",
  87         "info <imageAddr>          - display image info\n"
  88         "bmp display <imageAddr> [x y] - display image at x,y\n"
  89 );
  90
  91 /*
  92  * Subroutine:  bmp_info
  93  *
  94  * Description: Show information about bmp file in memory
  95  *
  96  * Inputs:      addr            address of the bmp file
  97  *
  98  * Return:      None
  99  *
 100  */
 101 static int bmp_info(ulong addr)
 102 {
 103         bmp_image_t *bmp=(bmp_image_t *)addr;
 104 #ifdef CONFIG_VIDEO_BMP_GZIP
 105         unsigned char *dst = NULL;
 106         ulong len;
 107 #endif /* CONFIG_VIDEO_BMP_GZIP */
 108
 109         if (!((bmp->header.signature[0]=='B') &&
 110               (bmp->header.signature[1]=='M'))) {
 111
 112 #ifdef CONFIG_VIDEO_BMP_GZIP
 113                 /*
 114                  * Decompress bmp image
 115                  */
 116                 len = CFG_VIDEO_LOGO_MAX_SIZE;
 117                 dst = malloc(CFG_VIDEO_LOGO_MAX_SIZE);
 118                 if (dst == NULL) {
 119                         printf("Error: malloc in gunzip failed!\n");
 120                         return(1);
 121                 }
 122                 if (gunzip(dst, CFG_VIDEO_LOGO_MAX_SIZE, (uchar *)addr, &len) != 0) {
 123                         printf("There is no valid bmp file at the given address\n");
 124                         return(1);
 125                 }
 126                 if (len == CFG_VIDEO_LOGO_MAX_SIZE) {
 127                         printf("Image could be truncated (increase CFG_VIDEO_LOGO_MAX_SIZE)!\n");
 128                 }
 129
 130                 /*
 131                  * Set addr to decompressed image
 132                  */
 133                 bmp = (bmp_image_t *)dst;
 134
 135                 /*
 136                  * Check for bmp mark 'BM'
 137                  */
 138                 if (!((bmp->header.signature[0] == 'B') &&
 139                       (bmp->header.signature[1] == 'M'))) {
 140                         printf("There is no valid bmp file at the given address\n");
 141                         free(dst);
 142                         return(1);
 143                 }
 144
 145                 printf("Gzipped BMP image detected!\n");
 146 #else /* CONFIG_VIDEO_BMP_GZIP */
 147                 printf("There is no valid bmp file at the given address\n");
 148                 return(1);
 149 #endif /* CONFIG_VIDEO_BMP_GZIP */
 150         }
 151         printf("Image size    : %d x %d\n", le32_to_cpu(bmp->header.width),
 152                le32_to_cpu(bmp->header.height));
 153         printf("Bits per pixel: %d\n", le16_to_cpu(bmp->header.bit_count));
 154         printf("Compression   : %d\n", le32_to_cpu(bmp->header.compression));
 155
 156 #ifdef CONFIG_VIDEO_BMP_GZIP
 157         if (dst) {
 158                 free(dst);
 159         }
 160 #endif /* CONFIG_VIDEO_BMP_GZIP */
 161
 162         return(0);
 163 }
 164
 165 /*
 166  * Subroutine:  bmp_display
 167  *
 168  * Description: Display bmp file located in memory
 169  *
 170  * Inputs:      addr            address of the bmp file
 171  *
 172  * Return:      None
 173  *
 174  */
 175 static int bmp_display(ulong addr, int x, int y)
 176 {
 177 #if defined(CONFIG_LCD)
 178         extern int lcd_display_bitmap (ulong, int, int);
 179
 180         return (lcd_display_bitmap (addr, x, y));
 181 #elif defined(CONFIG_VIDEO)
 182         extern int video_display_bitmap (ulong, int, int);
 183         return (video_display_bitmap (addr, x, y));
 184 #else
 185 # error bmp_display() requires CONFIG_LCD or CONFIG_VIDEO
 186 #endif
 187 }