/* Copyright (C) 2001-2023 Artifex Software, Inc.
   All Rights Reserved.

   This software is provided AS-IS with no warranty, either express or
   implied.

   This software is distributed under license and may not be copied,
   modified or distributed except as expressly authorized under the terms
   of the license contained in the file LICENSE in this distribution.

   Refer to licensing information at http://www.artifex.com or contact
   Artifex Software, Inc.,  39 Mesa Street, Suite 108A, San Francisco,
   CA 94129, USA, for further information.
*/

#ifndef jmemcust_h_INCLUDED
#  define jmemcust_h_INCLUDED

#include "std.h" /* FILE needed by jpeglib.h */
#include "jpeglib.h"
#include "jmemsys.h"

typedef JMETHOD(long, j_custmem_init_ptr, (j_common_ptr cinfo));
typedef JMETHOD(void, j_custmem_term_ptr, (j_common_ptr cinfo));
typedef JMETHOD(long, j_custmem_avail_ptr, (j_common_ptr cinfo));
typedef JMETHOD(void *, j_custmem_get_small_ptr,
    (j_common_ptr cinfo, size_t size));
typedef JMETHOD(void, j_custmem_free_small_ptr,
    (j_common_ptr cinfo, void *object, size_t size));
typedef JMETHOD(void *, j_cust_mem_get_large_ptr,
    (j_common_ptr cinfo, size_t size));
typedef JMETHOD(void, j_custmem_free_large_ptr,
    (j_common_ptr cinfo, void *object, size_t size));
typedef JMETHOD(void, j_custmem_open_backing_store_ptr,
    (j_common_ptr cinfo, backing_store_ptr info, long total_bytes_needed));

typedef struct {
  j_custmem_init_ptr               j_mem_init;
  j_custmem_term_ptr               j_mem_term;
  j_custmem_avail_ptr              j_mem_avail;
  j_custmem_get_small_ptr          j_mem_get_small;
  j_custmem_free_small_ptr         j_mem_free_small;
  j_cust_mem_get_large_ptr         j_mem_get_large;
  j_custmem_free_large_ptr         j_mem_free_large;
  j_custmem_open_backing_store_ptr j_mem_open_backing_store;
  void                             *priv;
} jpeg_cust_mem_data;

#define GET_CUST_MEM_DATA(c) ((jpeg_cust_mem_data *)c->client_data)

GLOBAL(jpeg_cust_mem_data *)
jpeg_cust_mem_init(jpeg_cust_mem_data *custm, void *priv,
    j_custmem_init_ptr               init,
    j_custmem_term_ptr               term,
    j_custmem_avail_ptr              avail,
    j_custmem_get_small_ptr          get_small,
    j_custmem_free_small_ptr         free_small,
    j_cust_mem_get_large_ptr         get_large,
    j_custmem_free_large_ptr         free_large,
    j_custmem_open_backing_store_ptr open_backing_store);

GLOBAL(jpeg_cust_mem_data *)
jpeg_cust_mem_set_private(jpeg_cust_mem_data *custm, void *priv);

#endif