/* * (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> static int bmp_info (ulong addr); static int bmp_display (ulong addr, int x, int y); int gunzip(void *, int, unsigned char *, unsigned long *); /* * Allocate and decompress a BMP image using gunzip(). * * Returns a pointer to the decompressed image data. Must be freed by * the caller after use. * * Returns NULL if decompression failed, or if the decompressed data * didn't contain a valid BMP signature. */ #ifdef CONFIG_VIDEO_BMP_GZIP static bmp_image_t *gunzip_bmp(unsigned long addr, unsigned long *lenp) { void *dst; unsigned long len; bmp_image_t *bmp; /* * Decompress bmp image */ len = CFG_VIDEO_LOGO_MAX_SIZE; dst = malloc(CFG_VIDEO_LOGO_MAX_SIZE); if (dst == NULL) { puts("Error: malloc in gunzip failed!\n"); return NULL; } if (gunzip(dst, CFG_VIDEO_LOGO_MAX_SIZE, (uchar *)addr, &len) != 0) { free(dst); return NULL; } if (len == CFG_VIDEO_LOGO_MAX_SIZE) puts("Image could be truncated" " (increase CFG_VIDEO_LOGO_MAX_SIZE)!\n"); bmp = dst; /* * Check for bmp mark 'BM' */ if (!((bmp->header.signature[0] == 'B') && (bmp->header.signature[1] == 'M'))) { free(dst); return NULL; } puts("Gzipped BMP image detected!\n"); return bmp; } #else static bmp_image_t *gunzip_bmp(unsigned long addr, unsigned long *lenp) { return NULL; } #endif /* * 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; unsigned long len; if (!((bmp->header.signature[0]=='B') && (bmp->header.signature[1]=='M'))) bmp = gunzip_bmp(addr, &len); if (bmp == NULL) { printf("There is no valid bmp file at the given address\n"); return 1; } 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)); if ((unsigned long)bmp != addr) free(bmp); 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) { int ret; bmp_image_t *bmp = (bmp_image_t *)addr; unsigned long len; if (!((bmp->header.signature[0]=='B') && (bmp->header.signature[1]=='M'))) bmp = gunzip_bmp(addr, &len); if (!bmp) { printf("There is no valid bmp file at the given address\n"); return 1; } #if defined(CONFIG_LCD) extern int lcd_display_bitmap (ulong, int, int); ret = lcd_display_bitmap ((unsigned long)bmp, x, y); #elif defined(CONFIG_VIDEO) extern int video_display_bitmap (ulong, int, int); ret = video_display_bitmap ((unsigned long)bmp, x, y); #else # error bmp_display() requires CONFIG_LCD or CONFIG_VIDEO #endif if ((unsigned long)bmp != addr) free(bmp); return ret; }