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 #if (CONFIG_COMMANDS & CFG_CMD_BMP)
  35
  36 static int bmp_info (ulong addr);
  37 static int bmp_display (ulong addr, int x, int y);
  38
  39 int gunzip(void *, int, unsigned char *, unsigned long *);
  40
  41 /*
  42  * Subroutine:  do_bmp
  43  *
  44  * Description: Handler for 'bmp' command..
  45  *
  46  * Inputs:      argv[1] contains the subcommand
  47  *
  48  * Return:      None
  49  *
  50  */
  51 int do_bmp(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
  52 {
  53         ulong addr;
  54         int x = 0, y = 0;
  55
  56         switch (argc) {
  57         case 2:         /* use load_addr as default address */
  58                 addr = load_addr;
  59                 break;
  60         case 3:         /* use argument */
  61                 addr = simple_strtoul(argv[2], NULL, 16);
  62                 break;
  63         case 5:
  64                 addr = simple_strtoul(argv[2], NULL, 16);
  65                 x = simple_strtoul(argv[3], NULL, 10);
  66                 y = simple_strtoul(argv[4], NULL, 10);
  67                 break;
  68         default:
  69                 printf ("Usage:\n%s\n", cmdtp->usage);
  70                 return 1;
  71         }
  72
  73         /* Allow for short names
  74          * Adjust length if more sub-commands get added
  75          */
  76         if (strncmp(argv[1],"info",1) == 0) {
  77                 return (bmp_info(addr));
  78         } else if (strncmp(argv[1],"display",1) == 0) {
  79             return (bmp_display(addr, x, y));
  80         } else {
  81                 printf ("Usage:\n%s\n", cmdtp->usage);
  82                 return 1;
  83         }
  84 }
  85
  86 U_BOOT_CMD(
  87         bmp,    5,      1,      do_bmp,
  88         "bmp     - manipulate BMP image data\n",
  89         "info <imageAddr>          - display image info\n"
  90         "bmp display <imageAddr> [x y] - display image at x,y\n"
  91 );
  92
  93 /*
  94  * Subroutine:  bmp_info
  95  *
  96  * Description: Show information about bmp file in memory
  97  *
  98  * Inputs:      addr            address of the bmp file
  99  *
 100  * Return:      None
 101  *
 102  */
 103 static int bmp_info(ulong addr)
 104 {
 105         bmp_image_t *bmp=(bmp_image_t *)addr;
 106 #ifdef CONFIG_VIDEO_BMP_GZIP
 107         unsigned char *dst = NULL;
 108         ulong len;
 109 #endif /* CONFIG_VIDEO_BMP_GZIP */
 110
 111         if (!((bmp->header.signature[0]=='B') &&
 112               (bmp->header.signature[1]=='M'))) {
 113
 114 #ifdef CONFIG_VIDEO_BMP_GZIP
 115                 /*
 116                  * Decompress bmp image
 117                  */
 118                 len = CFG_VIDEO_LOGO_MAX_SIZE;
 119                 dst = malloc(CFG_VIDEO_LOGO_MAX_SIZE);
 120                 if (dst == NULL) {
 121                         printf("Error: malloc in gunzip failed!\n");
 122                         return(1);
 123                 }
 124                 if (gunzip(dst, CFG_VIDEO_LOGO_MAX_SIZE, (uchar *)addr, &len) != 0) {
 125                         printf("There is no valid bmp file at the given address\n");
 126                         return(1);
 127                 }
 128                 if (len == CFG_VIDEO_LOGO_MAX_SIZE) {
 129                         printf("Image could be truncated (increase CFG_VIDEO_LOGO_MAX_SIZE)!\n");
 130                 }
 131
 132                 /*
 133                  * Set addr to decompressed image
 134                  */
 135                 bmp = (bmp_image_t *)dst;
 136
 137                 /*
 138                  * Check for bmp mark 'BM'
 139                  */
 140                 if (!((bmp->header.signature[0] == 'B') &&
 141                       (bmp->header.signature[1] == 'M'))) {
 142                         printf("There is no valid bmp file at the given address\n");
 143                         free(dst);
 144                         return(1);
 145                 }
 146
 147                 printf("Gzipped BMP image detected!\n");
 148 #else /* CONFIG_VIDEO_BMP_GZIP */
 149                 printf("There is no valid bmp file at the given address\n");
 150                 return(1);
 151 #endif /* CONFIG_VIDEO_BMP_GZIP */
 152         }
 153         printf("Image size    : %d x %d\n", le32_to_cpu(bmp->header.width),
 154                le32_to_cpu(bmp->header.height));
 155         printf("Bits per pixel: %d\n", le16_to_cpu(bmp->header.bit_count));
 156         printf("Compression   : %d\n", le32_to_cpu(bmp->header.compression));
 157
 158 #ifdef CONFIG_VIDEO_BMP_GZIP
 159         if (dst) {
 160                 free(dst);
 161         }
 162 #endif /* CONFIG_VIDEO_BMP_GZIP */
 163
 164         return(0);
 165 }
 166
 167 /*
 168  * Subroutine:  bmp_display
 169  *
 170  * Description: Display bmp file located in memory
 171  *
 172  * Inputs:      addr            address of the bmp file
 173  *
 174  * Return:      None
 175  *
 176  */
 177 static int bmp_display(ulong addr, int x, int y)
 178 {
 179 #if defined(CONFIG_LCD)
 180         extern int lcd_display_bitmap (ulong, int, int);
 181
 182         return (lcd_display_bitmap (addr, x, y));
 183 #elif defined(CONFIG_VIDEO)
 184         extern int video_display_bitmap (ulong, int, int);
 185         return (video_display_bitmap (addr, x, y));
 186 #else
 187 # error bmp_display() requires CONFIG_LCD or CONFIG_VIDEO
 188 #endif
 189 }
 190
 191 #endif /* (CONFIG_COMMANDS & CFG_CMD_BMP) */