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 <lcd.h>
  30 #include <bmp_layout.h>
  31 #include <command.h>
  32 #include <asm/byteorder.h>
  33 #include <malloc.h>
  34
  35 static int bmp_info (ulong addr);
  36 static int bmp_display (ulong addr, int x, int y);
  37
  38 /*
  39  * Allocate and decompress a BMP image using gunzip().
  40  *
  41  * Returns a pointer to the decompressed image data. Must be freed by
  42  * the caller after use.
  43  *
  44  * Returns NULL if decompression failed, or if the decompressed data
  45  * didn't contain a valid BMP signature.
  46  */
  47 #ifdef CONFIG_VIDEO_BMP_GZIP
  48 bmp_image_t *gunzip_bmp(unsigned long addr, unsigned long *lenp)
  49 {
  50         void *dst;
  51         unsigned long len;
  52         bmp_image_t *bmp;
  53
  54         /*
  55          * Decompress bmp image
  56          */
  57         len = CONFIG_SYS_VIDEO_LOGO_MAX_SIZE;
  58         dst = malloc(CONFIG_SYS_VIDEO_LOGO_MAX_SIZE);
  59         if (dst == NULL) {
  60                 puts("Error: malloc in gunzip failed!\n");
  61                 return NULL;
  62         }
  63         if (gunzip(dst, CONFIG_SYS_VIDEO_LOGO_MAX_SIZE, (uchar *)addr, &len) != 0) {
  64                 free(dst);
  65                 return NULL;
  66         }
  67         if (len == CONFIG_SYS_VIDEO_LOGO_MAX_SIZE)
  68                 puts("Image could be truncated"
  69                                 " (increase CONFIG_SYS_VIDEO_LOGO_MAX_SIZE)!\n");
  70
  71         bmp = dst;
  72
  73         /*
  74          * Check for bmp mark 'BM'
  75          */
  76         if (!((bmp->header.signature[0] == 'B') &&
  77               (bmp->header.signature[1] == 'M'))) {
  78                 free(dst);
  79                 return NULL;
  80         }
  81
  82         debug("Gzipped BMP image detected!\n");
  83
  84         return bmp;
  85 }
  86 #else
  87 bmp_image_t *gunzip_bmp(unsigned long addr, unsigned long *lenp)
  88 {
  89         return NULL;
  90 }
  91 #endif
  92
  93 static int do_bmp_info(cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[])
  94 {
  95         ulong addr;
  96
  97         switch (argc) {
  98         case 1:         /* use load_addr as default address */
  99                 addr = load_addr;
 100                 break;
 101         case 2:         /* use argument */
 102                 addr = simple_strtoul(argv[1], NULL, 16);
 103                 break;
 104         default:
 105                 return cmd_usage(cmdtp);
 106         }
 107
 108         return (bmp_info(addr));
 109 }
 110
 111 static int do_bmp_display(cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[])
 112 {
 113         ulong addr;
 114         int x = 0, y = 0;
 115
 116         switch (argc) {
 117         case 1:         /* use load_addr as default address */
 118                 addr = load_addr;
 119                 break;
 120         case 2:         /* use argument */
 121                 addr = simple_strtoul(argv[1], NULL, 16);
 122                 break;
 123         case 4:
 124                 addr = simple_strtoul(argv[1], NULL, 16);
 125                 x = simple_strtoul(argv[2], NULL, 10);
 126                 y = simple_strtoul(argv[3], NULL, 10);
 127                 break;
 128         default:
 129                 return cmd_usage(cmdtp);
 130         }
 131
 132          return (bmp_display(addr, x, y));
 133 }
 134
 135 static cmd_tbl_t cmd_bmp_sub[] = {
 136         U_BOOT_CMD_MKENT(info, 3, 0, do_bmp_info, "", ""),
 137         U_BOOT_CMD_MKENT(display, 5, 0, do_bmp_display, "", ""),
 138 };
 139
 140 #ifdef CONFIG_NEEDS_MANUAL_RELOC
 141 void bmp_reloc(void) {
 142         fixup_cmdtable(cmd_bmp_sub, ARRAY_SIZE(cmd_bmp_sub));
 143 }
 144 #endif
 145
 146 /*
 147  * Subroutine:  do_bmp
 148  *
 149  * Description: Handler for 'bmp' command..
 150  *
 151  * Inputs:      argv[1] contains the subcommand
 152  *
 153  * Return:      None
 154  *
 155  */
 156 static int do_bmp(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 157 {
 158         cmd_tbl_t *c;
 159
 160         /* Strip off leading 'bmp' command argument */
 161         argc--;
 162         argv++;
 163
 164         c = find_cmd_tbl(argv[0], &cmd_bmp_sub[0], ARRAY_SIZE(cmd_bmp_sub));
 165
 166         if (c)
 167                 return  c->cmd(cmdtp, flag, argc, argv);
 168         else
 169                 return cmd_usage(cmdtp);
 170 }
 171
 172 U_BOOT_CMD(
 173         bmp,    5,      1,      do_bmp,
 174         "manipulate BMP image data",
 175         "info <imageAddr>          - display image info\n"
 176         "bmp display <imageAddr> [x y] - display image at x,y"
 177 );
 178
 179 /*
 180  * Subroutine:  bmp_info
 181  *
 182  * Description: Show information about bmp file in memory
 183  *
 184  * Inputs:      addr            address of the bmp file
 185  *
 186  * Return:      None
 187  *
 188  */
 189 static int bmp_info(ulong addr)
 190 {
 191         bmp_image_t *bmp=(bmp_image_t *)addr;
 192         unsigned long len;
 193
 194         if (!((bmp->header.signature[0]=='B') &&
 195               (bmp->header.signature[1]=='M')))
 196                 bmp = gunzip_bmp(addr, &len);
 197
 198         if (bmp == NULL) {
 199                 printf("There is no valid bmp file at the given address\n");
 200                 return 1;
 201         }
 202
 203         printf("Image size    : %d x %d\n", le32_to_cpu(bmp->header.width),
 204                le32_to_cpu(bmp->header.height));
 205         printf("Bits per pixel: %d\n", le16_to_cpu(bmp->header.bit_count));
 206         printf("Compression   : %d\n", le32_to_cpu(bmp->header.compression));
 207
 208         if ((unsigned long)bmp != addr)
 209                 free(bmp);
 210
 211         return(0);
 212 }
 213
 214 /*
 215  * Subroutine:  bmp_display
 216  *
 217  * Description: Display bmp file located in memory
 218  *
 219  * Inputs:      addr            address of the bmp file
 220  *
 221  * Return:      None
 222  *
 223  */
 224 static int bmp_display(ulong addr, int x, int y)
 225 {
 226         int ret;
 227         bmp_image_t *bmp = (bmp_image_t *)addr;
 228         unsigned long len;
 229
 230         if (!((bmp->header.signature[0]=='B') &&
 231               (bmp->header.signature[1]=='M')))
 232                 bmp = gunzip_bmp(addr, &len);
 233
 234         if (!bmp) {
 235                 printf("There is no valid bmp file at the given address\n");
 236                 return 1;
 237         }
 238
 239 #if defined(CONFIG_LCD)
 240         ret = lcd_display_bitmap((ulong)bmp, x, y);
 241 #elif defined(CONFIG_VIDEO)
 242         extern int video_display_bitmap (ulong, int, int);
 243
 244         ret = video_display_bitmap ((unsigned long)bmp, x, y);
 245 #else
 246 # error bmp_display() requires CONFIG_LCD or CONFIG_VIDEO
 247 #endif
 248
 249         if ((unsigned long)bmp != addr)
 250                 free(bmp);
 251
 252         return ret;
 253 }