98 lines
2.5 KiB
C++
98 lines
2.5 KiB
C++
/*
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* File: image.hh
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*
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* Copyright (C) 2005-2007 Jorge Arellano Cid <jcid@dillo.org>,
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* Sebastian Geerken <sgeerken@dillo.org>
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* Copyright (C) 2024 Rodrigo Arias Mallo <rodarima@gmail.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or
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* (at your option) any later version.
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*/
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#ifndef __IMAGE_HH__
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#define __IMAGE_HH__
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/** @file
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* The DilloImage data-structure and methods */
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#include <memory>
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#ifdef __cplusplus
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extern "C" {
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#endif /* __cplusplus */
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#include "bitvec.hh"
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#include "url.hh"
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/*
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* Defines
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*/
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/** Arbitrary maximum for image size. To avoid image size-crafting attacks. */
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#define IMAGE_MAX_AREA (6000 * 6000)
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/*
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* Types
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*/
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typedef enum {
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DILLO_IMG_TYPE_INDEXED,
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DILLO_IMG_TYPE_RGB,
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DILLO_IMG_TYPE_GRAY,
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DILLO_IMG_TYPE_CMYK_INV,
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DILLO_IMG_TYPE_NOTSET /* Initial value */
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} DilloImgType;
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/* These will reflect the Image's "state" */
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typedef enum {
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IMG_Empty, /**< Just created the entry */
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IMG_SetParms, /**< Parameters set */
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IMG_SetCmap, /**< Color map set */
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IMG_Write, /**< Feeding the entry */
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IMG_Close, /**< Whole image got! */
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IMG_Abort /**< Image transfer aborted */
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} ImageState;
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struct DilloImage {
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void *layout, *img_rndr;
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/* Parameters as told by image data */
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uint_t width;
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uint_t height;
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float dpi; /**< Dots per inch */
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int32_t bg_color; /**< Background color */
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int32_t fg_color; /**< Foreground color */
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std::unique_ptr< bitvec_t > BitVec; /**< Bit vector for decoded rows */
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uint_t ScanNumber; /**< Current decoding scan */
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ImageState State; /**< Processing status */
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};
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/*
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* Function prototypes
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*/
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std::shared_ptr< DilloImage > a_Image_new(void *layout, void *img_rndr,
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int32_t bg_color, int32_t fg_color);
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std::shared_ptr< DilloImage > a_Image_new_with_dw(void *layout, const char *alt_text,
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int32_t bg_color, int32_t fg_color);
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void *a_Image_get_dw(DilloImage *Image);
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void a_Image_set_parms(DilloImage *Image, void *v_imgbuf, DilloUrl *url,
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int version, uint_t width, uint_t height,
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DilloImgType type);
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void a_Image_write(DilloImage *Image, uint_t y);
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void a_Image_close(DilloImage *Image);
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void a_Image_abort(DilloImage *Image);
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#ifdef __cplusplus
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}
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#endif /* __cplusplus */
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#endif /* __IMAGE_HH__ */
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