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