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/*
* (C) Copyright 2002
* Detlev Zundel, DENX Software Engineering, dzu@denx.de.
*
* SPDX-License-Identifier: GPL-2.0+
*/
/*
* BMP handling routines
*/
#include <common.h>
#include <lcd.h>
#include <bmp_layout.h>
#include <command.h>
#include <asm/byteorder.h>
#include <malloc.h>
#include <splash.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. This pointer is
* aligned to 32-bit-aligned-address + 2.
* See doc/README.displaying-bmps for explanation.
*
* The allocation address is passed to 'alloc_addr' and 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 **alloc_addr)
{
void *dst;
unsigned long len;
bmp_image_t *bmp;
/*
* Decompress bmp image
*/
len = CONFIG_SYS_VIDEO_LOGO_MAX_SIZE;
/* allocate extra 3 bytes for 32-bit-aligned-address + 2 alignment */
dst = malloc(CONFIG_SYS_VIDEO_LOGO_MAX_SIZE + 3);
if (dst == NULL) {
puts("Error: malloc in gunzip failed!\n");
return NULL;
}
bmp = dst;
/* align to 32-bit-aligned-address + 2 */
bmp = (bmp_image_t *)((((unsigned int)dst + 1) & ~3) + 2);
if (gunzip(bmp, 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");
/*
* 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");
*alloc_addr = dst;
return bmp;
}
#else
bmp_image_t *gunzip_bmp(unsigned long addr, unsigned long *lenp,
void **alloc_addr)
{
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;
splash_get_pos(&x, &y);
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;
void *bmp_alloc_addr = NULL;
unsigned long len;
if (!((bmp->header.signature[0]=='B') &&
(bmp->header.signature[1]=='M')))
bmp = gunzip_bmp(addr, &len, &bmp_alloc_addr);
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 (bmp_alloc_addr)
free(bmp_alloc_addr);
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;
void *bmp_alloc_addr = NULL;
unsigned long len;
if (!((bmp->header.signature[0]=='B') &&
(bmp->header.signature[1]=='M')))
bmp = gunzip_bmp(addr, &len, &bmp_alloc_addr);
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 (bmp_alloc_addr)
free(bmp_alloc_addr);
return ret;
}
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