--- /dev/null
+/*
+ * (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;
+}
Code Review / kvmfornfv.git / blobdiff