Add files needed for bitmap load support

3 files changed, 239 insertions, 0 deletions

diff --git a/common/cmd_bmp.c b/common/cmd_bmp.c
new file mode 100644
index 0000000..c6a16a4
--- /dev/null
+++ b/common/cmd_bmp.c
@@ -0,0 +1,118 @@
+/*
+ * (C) Copyright 2002
+ * Dtlev Zundel, DENX Software Engineering, dzu@denx.de.
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+/*
+ * BMP handling routines
+ */
+
+#include <common.h>
+#include <bmp_layout.h>
+#include <command.h>
+
+#if (CONFIG_COMMANDS & CFG_CMD_BMP)
+
+static int bmp_info (ulong addr);
+static int bmp_display (ulong addr);
+
+/*
+ * Subroutine:  do_bmp
+ *
+ * Description: Handler for 'bmp' command..
+ *
+ * Inputs:	argv[1] contains the subcommand
+ *
+ * Return:      None
+ *
+ */
+int do_bmp(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
+{
+	ulong addr;
+
+	switch (argc) {
+	case 2:		/* use load_addr as default address */
+		addr = load_addr;
+		break;
+	case 3:		/* use argument */
+		addr = simple_strtoul(argv[2], NULL, 16);
+		break;
+	default:
+		printf ("Usage:\n%s\n", cmdtp->usage);
+		return 1;
+	}
+
+	/* Allow for short names
+	 * Adjust length if more sub-commands get added
+	 */
+	if (strncmp(argv[1],"info",1) == 0) {
+		return (bmp_info(addr));
+	} else if (strncmp(argv[1],"display",1) == 0) {
+		return (bmp_display(addr));
+	} else {
+		printf ("Usage:\n%s\n", cmdtp->usage);
+		return 1;
+	}
+}
+
+/*
+ * 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;
+	if (!((bmp->header.signature[0]=='B') &&
+	      (bmp->header.signature[1]=='M'))) {
+		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));
+	return(0);
+}
+
+/*
+ * Subroutine:  bmp_display
+ *
+ * Description: Display bmp file located in memory
+ *
+ * Inputs:	addr		address of the bmp file
+ *
+ * Return:      None
+ *
+ */
+static int bmp_display(ulong addr)
+{
+	extern int lcd_display_bitmap (ulong);
+
+	return (lcd_display_bitmap (addr));
+}
+
+#endif /* (CONFIG_COMMANDS & CFG_CMD_BMP) */
diff --git a/include/bmp_layout.h b/include/bmp_layout.h
new file mode 100644
index 0000000..7285a26
--- /dev/null
+++ b/include/bmp_layout.h
@@ -0,0 +1,77 @@
+/* (C) Copyright 2002
+ * Detlev Zundel, DENX Software Engineering, dzu@denx.de.
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+/************************************************************************/
+/* ** Layout of a bmp file						*/
+/************************************************************************/
+
+#ifndef _BMP_H_
+#define _BMP_H_
+
+typedef struct bmp_color_table_entry {
+  __u8 blue;
+  __u8 green;
+  __u8 red;
+  __u8 reserved;
+} __attribute__((packed)) bmp_color_table_entry_t;
+
+/* When accessing these fields, remember that they are stored in little
+   endian format, so use linux macros, e.g. le32_to_cpu(width)          */
+
+typedef	struct bmp_header {
+  /* Header */
+  char signature[2];
+  __u32 file_size;
+  __u32 reserved;
+  __u32 data_offset;
+  /* InfoHeader */
+  __u32 size;
+  __u32 width;
+  __u32 height;
+  __u16 planes;
+  __u16 bit_count;
+  __u32 compression;
+  __u32 image_size;
+  __u32 x_pixels_per_m;
+  __u32 y_pixels_per_m;
+  __u32 colors_used;
+  __u32 colors_important;
+  /* ColorTable */
+  
+}  __attribute__((packed)) bmp_header_t;
+
+typedef struct bmp_image {
+  bmp_header_t header;
+  /* We use a zero sized array just as a placeholder for variable
+     sized array */
+  bmp_color_table_entry_t color_table[0];
+} bmp_image_t;
+
+/* Data in the bmp_image is aligned to this length */
+#define BMP_DATA_ALIGN 4
+
+/* Constants for the compression field */
+#define BMP_BI_RGB  0
+#define BMP_BI_RLE8 1
+#define BMP_BI_RLE4 2
+
+#endif /* _BMP_H_ */
diff --git a/include/cmd_bmp.h b/include/cmd_bmp.h
new file mode 100644
index 0000000..1f71578
--- /dev/null
+++ b/include/cmd_bmp.h
@@ -0,0 +1,44 @@
+/* (C) Copyright 2002
+ * Detlev Zundel, DENX Software Engineering, dzu@denx.de.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+/*
+ * Bitmap display support
+ */
+#ifndef	_CMD_BMP_H
+#define	_CMD_BMP_H
+
+#include <common.h>
+#include <command.h>
+
+
+#if (CONFIG_COMMANDS & CFG_CMD_BMP)
+
+#define CMD_TBL_BMP	MK_CMD_TBL_ENTRY(				\
+	"bmp", 3,	3,	1,	do_bmp,				\
+	"bmp     - manipulate BMP image data\n",			\
+	"\nbmp info <imageAddr>    - display image info\n"		\
+	"bmp display <imageAddr> - display image\n"			\
+),
+int do_bmp (cmd_tbl_t *cmdtp,  int flag, int argc, char *argv[]);
+
+#else
+#define CMD_TBL_BMP
+#endif
+
+#endif	/* _CMD_BMP_H */