u-boot/common/cmd_bmp.c
Stefan Reinauer f674f7cfc0 video: Provide an API to access video parameters
Create a basic API to provide access to video parameters such as screen
size, and to position the cursor on the screen. Also add a prototype
for video_display_bitmap() which was missing.

Signed-off-by: Stefan Reinauer <reinauer@chromium.org>
Signed-off-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Anatolij Gustschin <agust@denx.de>
2012-11-06 22:57:32 +01:00

252 lines
5.5 KiB
C

/*
* (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 <lcd.h>
#include <bmp_layout.h>
#include <command.h>
#include <asm/byteorder.h>
#include <malloc.h>
#include <video.h>
static int bmp_info (ulong addr);
/*
* 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
bmp_image_t *gunzip_bmp(unsigned long addr, unsigned long *lenp)
{
void *dst;
unsigned long len;
bmp_image_t *bmp;
/*
* Decompress bmp image
*/
len = CONFIG_SYS_VIDEO_LOGO_MAX_SIZE;
dst = malloc(CONFIG_SYS_VIDEO_LOGO_MAX_SIZE);
if (dst == NULL) {
puts("Error: malloc in gunzip failed!\n");
return NULL;
}
if (gunzip(dst, CONFIG_SYS_VIDEO_LOGO_MAX_SIZE, (uchar *)addr, &len) != 0) {
free(dst);
return NULL;
}
if (len == CONFIG_SYS_VIDEO_LOGO_MAX_SIZE)
puts("Image could be truncated"
" (increase CONFIG_SYS_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;
}
debug("Gzipped BMP image detected!\n");
return bmp;
}
#else
bmp_image_t *gunzip_bmp(unsigned long addr, unsigned long *lenp)
{
return NULL;
}
#endif
static int do_bmp_info(cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[])
{
ulong addr;
switch (argc) {
case 1: /* use load_addr as default address */
addr = load_addr;
break;
case 2: /* use argument */
addr = simple_strtoul(argv[1], NULL, 16);
break;
default:
return CMD_RET_USAGE;
}
return (bmp_info(addr));
}
static int do_bmp_display(cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[])
{
ulong addr;
int x = 0, y = 0;
switch (argc) {
case 1: /* use load_addr as default address */
addr = load_addr;
break;
case 2: /* use argument */
addr = simple_strtoul(argv[1], NULL, 16);
break;
case 4:
addr = simple_strtoul(argv[1], NULL, 16);
x = simple_strtoul(argv[2], NULL, 10);
y = simple_strtoul(argv[3], NULL, 10);
break;
default:
return CMD_RET_USAGE;
}
return (bmp_display(addr, x, y));
}
static cmd_tbl_t cmd_bmp_sub[] = {
U_BOOT_CMD_MKENT(info, 3, 0, do_bmp_info, "", ""),
U_BOOT_CMD_MKENT(display, 5, 0, do_bmp_display, "", ""),
};
#ifdef CONFIG_NEEDS_MANUAL_RELOC
void bmp_reloc(void) {
fixup_cmdtable(cmd_bmp_sub, ARRAY_SIZE(cmd_bmp_sub));
}
#endif
/*
* Subroutine: do_bmp
*
* Description: Handler for 'bmp' command..
*
* Inputs: argv[1] contains the subcommand
*
* Return: None
*
*/
static int do_bmp(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
{
cmd_tbl_t *c;
/* Strip off leading 'bmp' command argument */
argc--;
argv++;
c = find_cmd_tbl(argv[0], &cmd_bmp_sub[0], ARRAY_SIZE(cmd_bmp_sub));
if (c)
return c->cmd(cmdtp, flag, argc, argv);
else
return CMD_RET_USAGE;
}
U_BOOT_CMD(
bmp, 5, 1, do_bmp,
"manipulate BMP image data",
"info <imageAddr> - display image info\n"
"bmp display <imageAddr> [x y] - display image at x,y"
);
/*
* 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
*
*/
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)
ret = lcd_display_bitmap((ulong)bmp, x, y);
#elif defined(CONFIG_VIDEO)
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;
}