image.hh

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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__
 
#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */
 
 
#include "bitvec.h"
#include "url.h"
 
/*
 * Defines
 */
 
#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,      
   IMG_SetParms,   
   IMG_SetCmap,    
   IMG_Write,      
   IMG_Close,      
   IMG_Abort       
} ImageState;
 
struct _DilloImage {
   void *layout, *img_rndr;
 
   /* Parameters as told by image data */
   uint_t width;
   uint_t height;
 
   float dpi;               
   int32_t bg_color;        
   int32_t fg_color;        
   bitvec_t *BitVec;        
   uint_t ScanNumber;       
   ImageState State;        
   int RefCount;            
};
 
 
/*
 * Function prototypes
 */
DilloImage *a_Image_new(void *layout, void *img_rndr,
                        int32_t bg_color, int32_t fg_color);
DilloImage *a_Image_new_with_dw(void *layout, const char *alt_text,
                                int32_t bg_color, int32_t fg_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__ */