diff options
Diffstat (limited to 'common/cmd_bmp.c')
| -rwxr-xr-x | common/cmd_bmp.c | 191 |
1 files changed, 191 insertions, 0 deletions
diff --git a/common/cmd_bmp.c b/common/cmd_bmp.c new file mode 100755 index 0000000..ad412c8 --- /dev/null +++ b/common/cmd_bmp.c @@ -0,0 +1,191 @@ +/* + * (C) Copyright 2002 + * Detlev Zundel, DENX Software Engineering, dzu@denx.de. + * + * See file CREDITS for list of people who contributed to this + * project. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ + +/* + * BMP handling routines + */ + +#include <common.h> +#include <bmp_layout.h> +#include <command.h> +#include <asm/byteorder.h> +#include <malloc.h> + +#if (CONFIG_COMMANDS & CFG_CMD_BMP) + +static int bmp_info (ulong addr); +static int bmp_display (ulong addr, int x, int y); + +int gunzip(void *, int, unsigned char *, unsigned long *); + +/* + * Subroutine: do_bmp + * + * Description: Handler for 'bmp' command.. + * + * Inputs: argv[1] contains the subcommand + * + * Return: None + * + */ +int do_bmp(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]) +{ + ulong addr; + int x = 0, y = 0; + + switch (argc) { + case 2: /* use load_addr as default address */ + addr = load_addr; + break; + case 3: /* use argument */ + addr = simple_strtoul(argv[2], NULL, 16); + break; + case 5: + addr = simple_strtoul(argv[2], NULL, 16); + x = simple_strtoul(argv[3], NULL, 10); + y = simple_strtoul(argv[4], NULL, 10); + break; + default: + printf ("Usage:\n%s\n", cmdtp->usage); + return 1; + } + + /* Allow for short names + * Adjust length if more sub-commands get added + */ + if (strncmp(argv[1],"info",1) == 0) { + return (bmp_info(addr)); + } else if (strncmp(argv[1],"display",1) == 0) { + return (bmp_display(addr, x, y)); + } else { + printf ("Usage:\n%s\n", cmdtp->usage); + return 1; + } +} + +U_BOOT_CMD( + bmp, 5, 1, do_bmp, + "bmp - manipulate BMP image data\n", + "info <imageAddr> - display image info\n" + "bmp display <imageAddr> [x y] - display image at x,y\n" +); + +/* + * Subroutine: bmp_info + * + * Description: Show information about bmp file in memory + * + * Inputs: addr address of the bmp file + * + * Return: None + * + */ +static int bmp_info(ulong addr) +{ + bmp_image_t *bmp=(bmp_image_t *)addr; +#ifdef CONFIG_VIDEO_BMP_GZIP + unsigned char *dst = NULL; + ulong len; +#endif /* CONFIG_VIDEO_BMP_GZIP */ + + if (!((bmp->header.signature[0]=='B') && + (bmp->header.signature[1]=='M'))) { + +#ifdef CONFIG_VIDEO_BMP_GZIP + /* + * Decompress bmp image + */ + len = CFG_VIDEO_LOGO_MAX_SIZE; + dst = malloc(CFG_VIDEO_LOGO_MAX_SIZE); + if (dst == NULL) { + printf("Error: malloc in gunzip failed!\n"); + return(1); + } + if (gunzip(dst, CFG_VIDEO_LOGO_MAX_SIZE, (uchar *)addr, &len) != 0) { + printf("There is no valid bmp file at the given address\n"); + return(1); + } + if (len == CFG_VIDEO_LOGO_MAX_SIZE) { + printf("Image could be truncated (increase CFG_VIDEO_LOGO_MAX_SIZE)!\n"); + } + + /* + * Set addr to decompressed image + */ + bmp = (bmp_image_t *)dst; + + /* + * Check for bmp mark 'BM' + */ + if (!((bmp->header.signature[0] == 'B') && + (bmp->header.signature[1] == 'M'))) { + printf("There is no valid bmp file at the given address\n"); + free(dst); + return(1); + } + + printf("Gzipped BMP image detected!\n"); +#else /* CONFIG_VIDEO_BMP_GZIP */ + printf("There is no valid bmp file at the given address\n"); + return(1); +#endif /* CONFIG_VIDEO_BMP_GZIP */ + } + printf("Image size : %d x %d\n", le32_to_cpu(bmp->header.width), + le32_to_cpu(bmp->header.height)); + printf("Bits per pixel: %d\n", le16_to_cpu(bmp->header.bit_count)); + printf("Compression : %d\n", le32_to_cpu(bmp->header.compression)); + +#ifdef CONFIG_VIDEO_BMP_GZIP + if (dst) { + free(dst); + } +#endif /* CONFIG_VIDEO_BMP_GZIP */ + + return(0); +} + +/* + * Subroutine: bmp_display + * + * Description: Display bmp file located in memory + * + * Inputs: addr address of the bmp file + * + * Return: None + * + */ +static int bmp_display(ulong addr, int x, int y) +{ +#if defined(CONFIG_LCD) + extern int lcd_display_bitmap (ulong, int, int); + + return (lcd_display_bitmap (addr, x, y)); +#elif defined(CONFIG_VIDEO) + extern int video_display_bitmap (ulong, int, int); + return (video_display_bitmap (addr, x, y)); +#else +# error bmp_display() requires CONFIG_LCD or CONFIG_VIDEO +#endif +} + +#endif /* (CONFIG_COMMANDS & CFG_CMD_BMP) */ |