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