diff options
Diffstat (limited to 'cmd/bmp.c')
| -rw-r--r-- | cmd/bmp.c | 275 |
1 files changed, 275 insertions, 0 deletions
diff --git a/cmd/bmp.c b/cmd/bmp.c new file mode 100644 index 0000000..fd5b7db --- /dev/null +++ b/cmd/bmp.c @@ -0,0 +1,275 @@ +/* + * (C) Copyright 2002 + * Detlev Zundel, DENX Software Engineering, dzu@denx.de. + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +/* + * BMP handling routines + */ + +#include <common.h> +#include <dm.h> +#include <lcd.h> +#include <mapmem.h> +#include <bmp_layout.h> +#include <command.h> +#include <asm/byteorder.h> +#include <malloc.h> +#include <mapmem.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 +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_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 = (struct bmp_image *)((((unsigned int)dst + 1) & ~3) + 2); + + if (gunzip(bmp, CONFIG_SYS_VIDEO_LOGO_MAX_SIZE, map_sysmem(addr, 0), + &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 +struct bmp_image *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) +{ + 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); +} + +/* + * 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) +{ +#ifdef CONFIG_DM_VIDEO + struct udevice *dev; +#endif + 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); + +#ifdef CONFIG_DM_VIDEO + ret = uclass_first_device(UCLASS_VIDEO, &dev); + if (!ret) { + if (!dev) + ret = -ENODEV; + if (!ret) { + bool align = false; + +# ifdef CONFIG_SPLASH_SCREEN_ALIGN + align = true; +# endif /* CONFIG_SPLASH_SCREEN_ALIGN */ + ret = video_bmp_display(dev, addr, x, y, align); + } + } + return ret ? CMD_RET_FAILURE : 0; +#elif defined(CONFIG_LCD) + ret = lcd_display_bitmap(addr, x, y); +#elif defined(CONFIG_VIDEO) + ret = video_display_bitmap(addr, x, y); +#else +# error bmp_display() requires CONFIG_LCD or CONFIG_VIDEO +#endif + + if (bmp_alloc_addr) + free(bmp_alloc_addr); + + return ret; +} |