diff options
Diffstat (limited to 'common/cmd_bmp.c')
| -rw-r--r-- | common/cmd_bmp.c | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/common/cmd_bmp.c b/common/cmd_bmp.c index daa54e7..ad412c8 100644 --- a/common/cmd_bmp.c +++ b/common/cmd_bmp.c @@ -29,12 +29,15 @@ #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 * @@ -100,15 +103,64 @@ U_BOOT_CMD( 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); } |