u-boot/cmd/bmp.c

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// SPDX-License-Identifier: GPL-2.0+
/*
* (C) Copyright 2002
* Detlev Zundel, DENX Software Engineering, dzu@denx.de.
*/
/*
* BMP handling routines
*/
#include <common.h>
#include <bmp_layout.h>
#include <command.h>
#include <dm.h>
#include <gzip.h>
#include <image.h>
#include <log.h>
#include <malloc.h>
#include <mapmem.h>
#include <splash.h>
#include <video.h>
#include <asm/byteorder.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
struct bmp_image *gunzip_bmp(unsigned long addr, unsigned long *lenp,
void **alloc_addr)
{
void *dst;
unsigned long len;
struct bmp_image *bmp;
/*
* Decompress bmp image
*/
len = CONFIG_VIDEO_LOGO_MAX_SIZE;
/* allocate extra 3 bytes for 32-bit-aligned-address + 2 alignment */
dst = malloc(CONFIG_VIDEO_LOGO_MAX_SIZE + 3);
if (!dst) {
puts("Error: malloc in gunzip failed!\n");
return NULL;
}
/* align to 32-bit-aligned-address + 2 */
bmp = dst + 2;
if (gunzip(bmp, CONFIG_VIDEO_LOGO_MAX_SIZE, map_sysmem(addr, 0),
&len)) {
free(dst);
return NULL;
}
if (len == CONFIG_VIDEO_LOGO_MAX_SIZE)
puts("Image could be truncated (increase CONFIG_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
struct bmp_image *gunzip_bmp(unsigned long addr, unsigned long *lenp,
void **alloc_addr)
{
return NULL;
}
#endif
static int do_bmp_info(struct cmd_tbl *cmdtp, int flag, int argc,
char *const argv[])
{
ulong addr;
switch (argc) {
case 1: /* use image_load_addr as default address */
addr = image_load_addr;
break;
case 2: /* use argument */
addr = hextoul(argv[1], NULL);
break;
default:
return CMD_RET_USAGE;
}
return (bmp_info(addr));
}
static int do_bmp_display(struct cmd_tbl *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 image_load_addr as default address */
addr = image_load_addr;
break;
case 2: /* use argument */
addr = hextoul(argv[1], NULL);
break;
case 4:
addr = hextoul(argv[1], NULL);
if (!strcmp(argv[2], "m"))
x = BMP_ALIGN_CENTER;
else
x = dectoul(argv[2], NULL);
if (!strcmp(argv[3], "m"))
y = BMP_ALIGN_CENTER;
else
y = dectoul(argv[3], NULL);
break;
default:
return CMD_RET_USAGE;
}
return (bmp_display(addr, x, y));
}
static struct cmd_tbl 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(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[])
{
struct cmd_tbl *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)
{
struct bmp_image *bmp = (struct bmp_image *)map_sysmem(addr, 0);
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);
}
int bmp_display(ulong addr, int x, int y)
{
struct udevice *dev;
int ret;
struct bmp_image *bmp = map_sysmem(addr, 0);
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;
}
addr = map_to_sysmem(bmp);
ret = uclass_first_device_err(UCLASS_VIDEO, &dev);
if (!ret) {
bool align = false;
if (x == BMP_ALIGN_CENTER || y == BMP_ALIGN_CENTER)
align = true;
ret = video_bmp_display(dev, addr, x, y, align);
}
if (bmp_alloc_addr)
free(bmp_alloc_addr);
return ret ? CMD_RET_FAILURE : 0;
}