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/*
* File: dicache.c
*
* Copyright 2000-2007 Jorge Arellano Cid <jcid@dillo.org>
* Copyright 2025 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 __DICACHE_H__
#define __DICACHE_H__
#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */
#include "bitvec.h"
#include "image.hh"
#include "cache.h"
#include "dlib/dlib.h"
/** Symbolic name to request the last version of an image */
#define DIC_Last -1
/** Flags: Last version, Valid entry */
#define DIF_Last 1
#define DIF_Valid 2
/* These will reflect the entry's "state" */
typedef enum {
DIC_Empty, /**< Just created the entry */
DIC_SetParms, /**< Parameters set */
DIC_SetCmap, /**< Color map set */
DIC_Write, /**< Feeding the entry */
DIC_Close, /**< Whole image got! */
DIC_Abort /**< Image transfer aborted */
} DicEntryState;
typedef struct DICacheEntry {
DilloUrl *url; /**< Image URL for this entry */
DilloImgType type; /**< Image type */
uint_t width, height; /**< As taken from image data */
short Flags; /**< See Flags */
short SurvCleanup; /**< Cleanup-pass survival for unused images */
uchar_t *cmap; /**< Color map */
void *v_imgbuf; /**< Void pointer to an Imgbuf object */
uint_t TotalSize; /**< Amount of memory the image takes up */
uint_t ScanNumber; /**< Current decoding scan */
bitvec_t *BitVec; /**< Bit vector for decoded rows */
DicEntryState State; /**< Current status for this entry */
int RefCount; /**< Reference Counter */
int version; /**< Version number, used for different
versions of the same URL image */
uint_t DecodedSize; /**< Size of already decoded data */
CA_Callback_t Decoder; /**< Client function */
void *DecoderData; /**< Client function data */
} DICacheEntry;
void a_Dicache_init (void);
DICacheEntry *a_Dicache_get_entry(const DilloUrl *Url, int version);
void *a_Dicache_png_image(const char *Type, void *Ptr, CA_Callback_t *Call,
void **Data);
void *a_Dicache_gif_image(const char *Type, void *Ptr, CA_Callback_t *Call,
void **Data);
void *a_Dicache_jpeg_image(const char *Type, void *Ptr, CA_Callback_t *Call,
void **Data);
void a_Dicache_callback(int Op, CacheClient_t *Client);
void a_Dicache_set_parms(DilloUrl *url, int version, DilloImage *Image,
uint_t width, uint_t height, DilloImgType type,
double gamma);
void a_Dicache_set_cmap(DilloUrl *url, int version, int bg_color,
const uchar_t *cmap, uint_t num_colors,
int num_colors_max, int bg_index);
void a_Dicache_new_scan(const DilloUrl *url, int version);
void a_Dicache_write(DilloUrl *url, int version, const uchar_t *buf, uint_t Y);
void a_Dicache_close(DilloUrl *url, int version, CacheClient_t *Client);
void a_Dicache_invalidate_entry(const DilloUrl *Url);
DICacheEntry* a_Dicache_ref(const DilloUrl *Url, int version);
void a_Dicache_unref(const DilloUrl *Url, int version);
void a_Dicache_cleanup(void);
void a_Dicache_freeall(void);
Dstr *a_Dicache_stats(void);
#ifdef __cplusplus
}
#endif /* __cplusplus */
#endif /* __DICACHE_H__ */
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