mirror of
https://github.com/netsurf-browser/netsurf
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6807b4208a
NetSurf includes are now done with ""s and other system includes with <>s as C intended. The scandeps tool has been updated to only look for ""ed includes, and to verify that the files exist in the tree before adding them to the dependency lines. The depend rule has therefore been augmented to make sure the autogenerated files are built before it is run. This is untested under self-hosted RISC OS builds. All else tested and works. svn path=/trunk/netsurf/; revision=3307
74 lines
2.2 KiB
C
74 lines
2.2 KiB
C
/*
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* This file is part of NetSurf, http://netsurf-browser.org/
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* Licensed under the GNU General Public License,
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* http://www.opensource.org/licenses/gpl-license
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* Copyright 2006 Richard Wilson <info@tinct.net>
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*/
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/** \file
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* BMP file decoding (interface).
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*/
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#ifndef _NETSURF_IMAGE_BMPREAD_H_
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#define _NETSURF_IMAGE_BMPREAD_H_
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#include <stdbool.h>
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#include "image/bitmap.h"
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/* error return values */
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typedef enum {
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BMP_OK = 0,
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BMP_INSUFFICIENT_MEMORY = 1,
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BMP_INSUFFICIENT_DATA = 2,
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BMP_DATA_ERROR = 3
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} bmp_result;
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/* encoding types */
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typedef enum {
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BMP_ENCODING_RGB = 0,
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BMP_ENCODING_RLE8 = 1,
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BMP_ENCODING_RLE4 = 2,
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BMP_ENCODING_BITFIELDS = 3
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} bmp_encoding;
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struct bmp_image {
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unsigned char *bmp_data; /** pointer to BMP data */
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unsigned int buffer_size; /** total number of bytes of BMP data available */
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unsigned int width; /** width of BMP (valid after _analyse) */
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unsigned int height; /** heigth of BMP (valid after _analyse) */
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bmp_encoding encoding; /** pixel encoding type */
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unsigned int bitmap_offset; /** offset of bitmap data */
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unsigned int bpp; /** bits per pixel */
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unsigned int colours; /** number of colours */
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unsigned int *colour_table; /** colour table */
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bool reversed; /** scanlines are top to bottom */
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bool decoded; /** whether the image has been decoded */
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bool ico; /** image is part of an ICO, mask follows */
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unsigned int mask[4]; /** four bitwise mask */
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int shift[4]; /** four bitwise shifts */
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struct bitmap *bitmap; /** decoded image */
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};
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struct ico_image {
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struct bmp_image bmp;
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struct ico_image *next;
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};
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struct ico_collection {
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unsigned char *ico_data; /** pointer to ICO data */
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unsigned int buffer_size; /** total number of bytes of ICO data available */
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unsigned int width; /** width of largest BMP */
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unsigned int height; /** heigth of largest BMP */
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struct ico_image *first;
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};
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bmp_result bmp_analyse(struct bmp_image *bmp);
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bmp_result bmp_decode(struct bmp_image *bmp);
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void bmp_finalise(struct bmp_image *bmp);
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bmp_result ico_analyse(struct ico_collection *ico);
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struct bmp_image *ico_find(struct ico_collection *ico, int width, int height);
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void ico_finalise(struct ico_collection *ico);
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#endif
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