splash/bmp: switch to image_renderer

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

4 files changed, 147 insertions, 37 deletions

diff --git a/lib/Kconfig b/lib/Kconfig
index be3ea1cf5..417c81ee5 100644
--- a/lib/Kconfig
+++ b/lib/Kconfig
@@ -45,5 +45,6 @@ config IMAGE_RENDERER
 
 config BMP
 	bool
+	depends on IMAGE_RENDERER
 
 endmenu
diff --git a/lib/Makefile b/lib/Makefile
index 237daf1dc..075613580 100644
--- a/lib/Makefile
+++ b/lib/Makefile
@@ -34,5 +34,5 @@ obj-$(CONFIG_UNCOMPRESS)	+= uncompress.o
 obj-$(CONFIG_BCH)	+= bch.o
 obj-$(CONFIG_BITREV)	+= bitrev.o
 obj-$(CONFIG_QSORT)	+= qsort.o
-obj-$(CONFIG_BMP)	+= bmp.o graphic_utils.o
-obj-$(CONFIG_IMAGE_RENDERER)	+= image_renderer.o
+obj-$(CONFIG_BMP)	+= bmp.o
+obj-$(CONFIG_IMAGE_RENDERER)	+= image_renderer.o graphic_utils.o
diff --git a/lib/bmp.c b/lib/bmp.c
index ece03e303..f5c19616d 100644
--- a/lib/bmp.c
+++ b/lib/bmp.c
@@ -1,55 +1,68 @@
 #include <common.h>
-#include <fs.h>
 #include <errno.h>
 #include <malloc.h>
 #include <fb.h>
-#include <bmp_layout.h>
+#include "bmp_layout.h"
 #include <asm/byteorder.h>
 #include <graphic_utils.h>
+#include <init.h>
+#include <image_renderer.h>
 
-int bmp_render_file(struct fb_info *info, const char* bmpfile, void* fb,
-		    int startx, int starty, int xres, int yres, void* offscreenbuf)
+struct image *bmp_open(char *inbuf, int insize)
 {
-	struct bmp_image *bmp;
-	int sw, sh, width, height;
-	int bits_per_pixel, fbsize;
-	int bmpsize;
-	int ret = 0;
-	void *adr, *buf;
-	char *image;
+	struct image *img = calloc(1, sizeof(struct image));
+	struct bmp_image *bmp = (struct bmp_image*)inbuf;
 
-	bmp = read_file(bmpfile, &bmpsize);
-	if (!bmp) {
-		printf("unable to read %s\n", bmpfile);
-		return -ENOMEM;
+	if (!img) {
+		free(bmp);
+		return ERR_PTR(-ENOMEM);
 	}
 
-	if (bmp->header.signature[0] != 'B' ||
-	      bmp->header.signature[1] != 'M') {
-		printf("No valid bmp file\n");
-		ret = -EINVAL;
-		goto err;
-	}
+	img->data = inbuf;
+	img->height = le32_to_cpu(bmp->header.height);;
+	img->width = le32_to_cpu(bmp->header.width);;
+	img->bits_per_pixel = le16_to_cpu(bmp->header.bit_count);
+
+	pr_debug("bmp: %d x %d  x %d data@0x%p\n", img->width, img->height,
+		 img->bit_per_pixel, img->data);
+
+	return img;
+}
+
+void bmp_close(struct image *img)
+{
+	free(img->data);
+}
 
-	sw = le32_to_cpu(bmp->header.width);
-	sh = le32_to_cpu(bmp->header.height);
+static int bmp_renderer(struct fb_info *info, struct image *img, void* fb,
+		int startx, int starty, void* offscreenbuf)
+{
+	struct bmp_image *bmp = img->data;
+	int width, height;
+	int bits_per_pixel, fbsize;
+	void *adr, *buf;
+	char *image;
+	int xres, yres;
+
+	xres = info->xres;
+	yres = info->yres;
 
 	if (startx < 0) {
-		startx = (xres - sw) / 2;
+		startx = (xres - img->width) / 2;
 		if (startx < 0)
 			startx = 0;
 	}
 
 	if (starty < 0) {
-		starty = (yres - sh) / 2;
+		starty = (yres - img->height) / 2;
 		if (starty < 0)
 			starty = 0;
 	}
 
-	width = min(sw, xres - startx);
-	height = min(sh, yres - starty);
+	width = min(img->width, xres - startx);
+	height = min(img->height, yres - starty);
 
-	bits_per_pixel = le16_to_cpu(bmp->header.bit_count);
+	bits_per_pixel = img->bits_per_pixel;
 	fbsize = xres * yres * (info->bits_per_pixel >> 3);
 
 	buf = offscreenbuf ? offscreenbuf : fb;
@@ -61,7 +74,7 @@ int bmp_render_file(struct fb_info *info, const char* bmpfile, void* fb,
 		for (y = 0; y < height; y++) {
 			image = (char *)bmp +
 					le32_to_cpu(bmp->header.data_offset);
-			image += (sh - y - 1) * sw * (bits_per_pixel >> 3);
+			image += (img->height - y - 1) * img->width * (bits_per_pixel >> 3);
 			adr = buf + ((y + starty) * xres + startx) *
 					(info->bits_per_pixel >> 3);
 			for (x = 0; x < width; x++) {
@@ -83,7 +96,7 @@ int bmp_render_file(struct fb_info *info, const char* bmpfile, void* fb,
 		for (y = 0; y < height; y++) {
 			image = (char *)bmp +
 					le32_to_cpu(bmp->header.data_offset);
-			image += (sh - y - 1) * sw * (bits_per_pixel >> 3);
+			image += (img->height - y - 1) * img->width * (bits_per_pixel >> 3);
 			adr = buf + ((y + starty) * xres + startx) *
 					(info->bits_per_pixel >> 3);
 			for (x = 0; x < width; x++) {
@@ -104,10 +117,18 @@ int bmp_render_file(struct fb_info *info, const char* bmpfile, void* fb,
 	if (offscreenbuf)
 		memcpy(fb, offscreenbuf, fbsize);
 
-	free(bmp);
-	return sh;
+	return img->height;
+}
+
+static struct image_renderer bmp = {
+	.type = filetype_bmp,
+	.open = bmp_open,
+	.close = bmp_close,
+	.renderer = bmp_renderer,
+};
 
-err:
-	free(bmp);
-	return ret;
+static int bmp_init(void)
+{
+	return image_renderer_register(&bmp);
 }
+fs_initcall(bmp_init);
diff --git a/lib/bmp_layout.h b/lib/bmp_layout.h
new file mode 100644
index 000000000..b5472dd78
--- /dev/null
+++ b/lib/bmp_layout.h
@@ -0,0 +1,88 @@
+/* (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_
+
+struct bmp_color_table_entry {
+	__u8	blue;
+	__u8	green;
+	__u8	red;
+	__u8	reserved;
+} __attribute__ ((packed));
+
+/* When accessing these fields, remember that they are stored in little
+   endian format, so use linux macros, e.g. le32_to_cpu(width)          */
+
+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));
+
+struct bmp_image {
+	struct bmp_header header;
+	/* We use a zero sized array just as a placeholder for variable
+	   sized array */
+	struct bmp_color_table_entry color_table[0];
+};
+
+/* 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
+
+#ifdef CONFIG_BMP
+int bmp_render_file(struct fb_info *info, const char* bmpfile, void* fb,
+		    int startx, int starty, int xres, int yres, void* offscreenbuf);
+#else
+static inline int bmp_render_file(struct fb_info *info, const char* bmpfile, void* fb,
+		    int startx, int starty, int xres, int yres, void* offscreenbuf)
+{
+	return -ENOSYS;
+}
+#endif
+
+#endif							/* _BMP_H_ */