1 files changed, 84 insertions, 0 deletions
diff --git a/libnsbmp.h b/libnsbmp.h
new file mode 100644
index 0000000..e1ed6c3
--- /dev/null
+++ b/libnsbmp.h
@@ -0,0 +1,84 @@
+/*
+ * Copyright 2006 Richard Wilson <info@tinct.net>
+ *
+ * This file is part of NetSurf, http://www.netsurf-browser.org/
+ *
+ * NetSurf 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; version 2 of the License.
+ *
+ * NetSurf 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, see <http://www.gnu.org/licenses/>.
+ */
+
+/** \file
+ * BMP file decoding (interface).
+ */
+
+#ifndef _NETSURF_IMAGE_BMPREAD_H_
+#define _NETSURF_IMAGE_BMPREAD_H_
+
+#include <stdbool.h>
+#include "image/bitmap.h"
+
+/* error return values */
+typedef enum {
+	BMP_OK = 0,
+	BMP_INSUFFICIENT_MEMORY = 1,
+	BMP_INSUFFICIENT_DATA = 2,
+	BMP_DATA_ERROR = 3
+} bmp_result;
+
+/* encoding types */
+typedef enum {
+  	BMP_ENCODING_RGB = 0,
+  	BMP_ENCODING_RLE8 = 1,
+  	BMP_ENCODING_RLE4 = 2,
+  	BMP_ENCODING_BITFIELDS = 3
+} bmp_encoding;
+
+struct bmp_image {
+	unsigned char *bmp_data;	/** pointer to BMP data */
+	unsigned int buffer_size;	/** total number of bytes of BMP data available */
+	unsigned int width;		/** width of BMP (valid after _analyse) */
+	unsigned int height;		/** heigth of BMP (valid after _analyse) */
+	bmp_encoding encoding;		/** pixel encoding type */
+	unsigned int bitmap_offset;	/** offset of bitmap data */
+	unsigned int bpp;		/** bits per pixel */
+	unsigned int colours;		/** number of colours */
+	unsigned int *colour_table;	/** colour table */
+	bool reversed;			/** scanlines are top to bottom */
+	bool decoded;			/** whether the image has been decoded */
+	bool ico;			/** image is part of an ICO, mask follows */
+	unsigned int mask[4];		/** four bitwise mask */
+	int shift[4];			/** four bitwise shifts */
+	struct bitmap *bitmap;		/** decoded image */
+};
+
+struct ico_image {
+	struct bmp_image bmp;
+	struct ico_image *next;
+};
+
+struct ico_collection {
+	unsigned char *ico_data;	/** pointer to ICO data */
+	unsigned int buffer_size;	/** total number of bytes of ICO data available */
+	unsigned int width;		/** width of largest BMP */
+	unsigned int height;		/** heigth of largest BMP */
+  	struct ico_image *first;
+};
+
+bmp_result bmp_analyse(struct bmp_image *bmp);
+bmp_result bmp_decode(struct bmp_image *bmp);
+void bmp_finalise(struct bmp_image *bmp);
+
+bmp_result ico_analyse(struct ico_collection *ico);
+struct bmp_image *ico_find(struct ico_collection *ico, int width, int height);
+void ico_finalise(struct ico_collection *ico);
+
+#endif