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/*
* Copyright (C) 2001-2017 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., 7 Mt. Lassen Drive - Suite A-134, San Rafael,
* CA 94903, U.S.A., +1(415)492-9861, for further information.
*/
#if !defined(SHARE_JPEG) || SHARE_JPEG==0
#include "jinclude.h"
#include "jpeglib.h"
#include "jmemsys.h"
#include "jerror.h"
#include "jmemcust.h"
GLOBAL(void *)
jpeg_get_small (j_common_ptr cinfo, size_t sizeofobject)
{
jpeg_cust_mem_data *cmem = GET_CUST_MEM_DATA(cinfo);
return (void *) (cmem->j_mem_get_small)(cinfo, sizeofobject);
}
GLOBAL(void)
jpeg_free_small (j_common_ptr cinfo, void * object, size_t sizeofobject)
{
jpeg_cust_mem_data *cmem = GET_CUST_MEM_DATA(cinfo);
(cmem->j_mem_free_small)(cinfo, object, sizeofobject);
}
/*
* "Large" objects are treated the same as "small" ones.
* NB: although we include FAR keywords in the routine declarations,
* this file won't actually work in 80x86 small/medium model; at least,
* you probably won't be able to process useful-size images in only 64KB.
*/
GLOBAL(void FAR *)
jpeg_get_large (j_common_ptr cinfo, size_t sizeofobject)
{
jpeg_cust_mem_data *cmem = GET_CUST_MEM_DATA(cinfo);
return (void *) (cmem->j_mem_get_large)(cinfo, sizeofobject);
}
GLOBAL(void)
jpeg_free_large (j_common_ptr cinfo, void FAR * object, size_t sizeofobject)
{
jpeg_cust_mem_data *cmem = GET_CUST_MEM_DATA(cinfo);
(cmem->j_mem_free_large)(cinfo, object, sizeofobject);
}
/*
* This routine computes the total memory space available for allocation.
* Here we always say, "we got all you want bud!"
*/
GLOBAL(long)
jpeg_mem_available (j_common_ptr cinfo, long min_bytes_needed,
long max_bytes_needed, long already_allocated)
{
jpeg_cust_mem_data *cmem = GET_CUST_MEM_DATA(cinfo);
long ret = max_bytes_needed;
if (cmem->j_mem_avail)
ret = (cmem->j_mem_avail)(cinfo);
return ret;
}
/*
* Backing store (temporary file) management.
* Since jpeg_mem_available always promised the moon,
* this should never be called and we can just error out.
*/
GLOBAL(void)
jpeg_open_backing_store (j_common_ptr cinfo, backing_store_ptr info,
long total_bytes_needed)
{
jpeg_cust_mem_data *cmem = GET_CUST_MEM_DATA(cinfo);
if (cmem->j_mem_open_backing_store) {
(cmem->j_mem_open_backing_store)(cinfo, info, total_bytes_needed);
}
else
ERREXIT(cinfo, JERR_NO_BACKING_STORE);
}
/*
* These routines take care of any system-dependent initialization and
* cleanup required. Here, there isn't any.
*/
GLOBAL(long)
jpeg_mem_init (j_common_ptr cinfo)
{
jpeg_cust_mem_data *cmem = GET_CUST_MEM_DATA(cinfo);
long ret = 0;
if (cmem->j_mem_init)
ret = (cmem->j_mem_init)(cinfo);
return ret;
}
GLOBAL(void)
jpeg_mem_term (j_common_ptr cinfo)
{
jpeg_cust_mem_data *cmem = GET_CUST_MEM_DATA(cinfo);
if (cmem->j_mem_term)
(cmem->j_mem_term)(cinfo);
}
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)
{
jpeg_cust_mem_data *lcustm = NULL;
/* We need at least the following for a viable memory manager */
if (get_small && free_small && get_large && free_large)
{
lcustm = custm;
lcustm->priv = priv;
lcustm->j_mem_init = init;
lcustm->j_mem_term = term;
lcustm->j_mem_avail = avail;
lcustm->j_mem_get_small = get_small;
lcustm->j_mem_free_small = free_small;
lcustm->j_mem_get_large = get_large;
lcustm->j_mem_free_large = free_large;
lcustm->j_mem_open_backing_store = open_backing_store;
}
return lcustm;
}
GLOBAL(jpeg_cust_mem_data *)
jpeg_cust_mem_set_private(jpeg_cust_mem_data *custm, void *priv)
{
if (custm)
{
custm->priv = priv;
}
return custm;
}
#endif /* !defined(SHARE_JPEG) || SHARE_JPEG==0 */
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