1 // SPDX-License-Identifier: GPL-2.0+
4 * Detlev Zundel, DENX Software Engineering, dzu@denx.de.
8 * BMP handling routines
15 #include <bmp_layout.h>
17 #include <asm/byteorder.h>
23 static int bmp_info (ulong addr);
26 * Allocate and decompress a BMP image using gunzip().
28 * Returns a pointer to the decompressed image data. This pointer is
29 * aligned to 32-bit-aligned-address + 2.
30 * See doc/README.displaying-bmps for explanation.
32 * The allocation address is passed to 'alloc_addr' and must be freed
33 * by the caller after use.
35 * Returns NULL if decompression failed, or if the decompressed data
36 * didn't contain a valid BMP signature.
38 #ifdef CONFIG_VIDEO_BMP_GZIP
39 struct bmp_image *gunzip_bmp(unsigned long addr, unsigned long *lenp,
44 struct bmp_image *bmp;
47 * Decompress bmp image
49 len = CONFIG_SYS_VIDEO_LOGO_MAX_SIZE;
50 /* allocate extra 3 bytes for 32-bit-aligned-address + 2 alignment */
51 dst = malloc(CONFIG_SYS_VIDEO_LOGO_MAX_SIZE + 3);
53 puts("Error: malloc in gunzip failed!\n");
59 /* align to 32-bit-aligned-address + 2 */
60 bmp = (struct bmp_image *)((((unsigned int)dst + 1) & ~3) + 2);
62 if (gunzip(bmp, CONFIG_SYS_VIDEO_LOGO_MAX_SIZE, map_sysmem(addr, 0),
67 if (len == CONFIG_SYS_VIDEO_LOGO_MAX_SIZE)
68 puts("Image could be truncated"
69 " (increase CONFIG_SYS_VIDEO_LOGO_MAX_SIZE)!\n");
72 * Check for bmp mark 'BM'
74 if (!((bmp->header.signature[0] == 'B') &&
75 (bmp->header.signature[1] == 'M'))) {
80 debug("Gzipped BMP image detected!\n");
86 struct bmp_image *gunzip_bmp(unsigned long addr, unsigned long *lenp,
93 static int do_bmp_info(cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[])
98 case 1: /* use load_addr as default address */
101 case 2: /* use argument */
102 addr = simple_strtoul(argv[1], NULL, 16);
105 return CMD_RET_USAGE;
108 return (bmp_info(addr));
111 static int do_bmp_display(cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[])
116 splash_get_pos(&x, &y);
119 case 1: /* use load_addr as default address */
122 case 2: /* use argument */
123 addr = simple_strtoul(argv[1], NULL, 16);
126 addr = simple_strtoul(argv[1], NULL, 16);
127 x = simple_strtoul(argv[2], NULL, 10);
128 y = simple_strtoul(argv[3], NULL, 10);
131 return CMD_RET_USAGE;
134 return (bmp_display(addr, x, y));
137 static cmd_tbl_t cmd_bmp_sub[] = {
138 U_BOOT_CMD_MKENT(info, 3, 0, do_bmp_info, "", ""),
139 U_BOOT_CMD_MKENT(display, 5, 0, do_bmp_display, "", ""),
142 #ifdef CONFIG_NEEDS_MANUAL_RELOC
143 void bmp_reloc(void) {
144 fixup_cmdtable(cmd_bmp_sub, ARRAY_SIZE(cmd_bmp_sub));
151 * Description: Handler for 'bmp' command..
153 * Inputs: argv[1] contains the subcommand
158 static int do_bmp(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
162 /* Strip off leading 'bmp' command argument */
166 c = find_cmd_tbl(argv[0], &cmd_bmp_sub[0], ARRAY_SIZE(cmd_bmp_sub));
169 return c->cmd(cmdtp, flag, argc, argv);
171 return CMD_RET_USAGE;
176 "manipulate BMP image data",
177 "info <imageAddr> - display image info\n"
178 "bmp display <imageAddr> [x y] - display image at x,y"
182 * Subroutine: bmp_info
184 * Description: Show information about bmp file in memory
186 * Inputs: addr address of the bmp file
191 static int bmp_info(ulong addr)
193 struct bmp_image *bmp = (struct bmp_image *)map_sysmem(addr, 0);
194 void *bmp_alloc_addr = NULL;
197 if (!((bmp->header.signature[0]=='B') &&
198 (bmp->header.signature[1]=='M')))
199 bmp = gunzip_bmp(addr, &len, &bmp_alloc_addr);
202 printf("There is no valid bmp file at the given address\n");
206 printf("Image size : %d x %d\n", le32_to_cpu(bmp->header.width),
207 le32_to_cpu(bmp->header.height));
208 printf("Bits per pixel: %d\n", le16_to_cpu(bmp->header.bit_count));
209 printf("Compression : %d\n", le32_to_cpu(bmp->header.compression));
212 free(bmp_alloc_addr);
218 * Subroutine: bmp_display
220 * Description: Display bmp file located in memory
222 * Inputs: addr address of the bmp file
227 int bmp_display(ulong addr, int x, int y)
229 #ifdef CONFIG_DM_VIDEO
233 struct bmp_image *bmp = map_sysmem(addr, 0);
234 void *bmp_alloc_addr = NULL;
237 if (!((bmp->header.signature[0]=='B') &&
238 (bmp->header.signature[1]=='M')))
239 bmp = gunzip_bmp(addr, &len, &bmp_alloc_addr);
242 printf("There is no valid bmp file at the given address\n");
245 addr = map_to_sysmem(bmp);
247 #ifdef CONFIG_DM_VIDEO
248 ret = uclass_first_device_err(UCLASS_VIDEO, &dev);
252 # ifdef CONFIG_SPLASH_SCREEN_ALIGN
254 # endif /* CONFIG_SPLASH_SCREEN_ALIGN */
255 ret = video_bmp_display(dev, addr, x, y, align);
257 #elif defined(CONFIG_LCD)
258 ret = lcd_display_bitmap(addr, x, y);
259 #elif defined(CONFIG_VIDEO)
260 ret = video_display_bitmap(addr, x, y);
262 # error bmp_display() requires CONFIG_LCD or CONFIG_VIDEO
266 free(bmp_alloc_addr);
268 return ret ? CMD_RET_FAILURE : 0;