/* * (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; }