    /*
     * jmemnobs.c
     *
     * Copyright (C) 1992-1996, Thomas G. Lane.
     * This file is part of the Independent JPEG Group's software.
     * For conditions of distribution and use, see the accompanying README file.
     *
     * This file provides a really simple implementation of the system-
     * dependent portion of the JPEG memory manager.  This implementation
     * assumes that no backing-store files are needed: all required space
     * can be obtained from malloc().
     * This is very portable in the sense that it'll compile on almost anything,
     * but you'd better have lots of main memory (or virtual memory) if you want
     * to process big images.
     * Note that the max_memory_to_use option is ignored by this implementation.
     */

    #define JPEG_INTERNALS
    #include "jinclude.h"
    #include "jpeglib.h"
    #include "jmemsys.h"		/* import the system-dependent declarations */

    #ifndef HAVE_STDLIB_H		/* <stdlib.h> should declare malloc(),free() */
    extern void * malloc JPP((size_t size));
    extern void free JPP((void *ptr));
    #endif

    /*
     * Memory allocation and freeing are controlled by the regular library
     * routines malloc() and free().
     */

    GLOBAL(void *)
    jpeg_get_small (j_common_ptr , size_t sizeofobject)
    {
      return (void *) malloc(sizeofobject);
    }

    GLOBAL(void)
    jpeg_free_small (j_common_ptr , void * object, size_t )
    {
      free(object);
    }

    /*
     * "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 , size_t sizeofobject)
    {
      return (void FAR *) malloc(sizeofobject);
    }

    GLOBAL(void)
    jpeg_free_large (j_common_ptr , void FAR * object, size_t )
    {
      free(object);
    }

    /*
     * 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 , long ,
    		    long max_bytes_needed, long )
    {
      return max_bytes_needed;
    }

    /*
     * 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 ,
    			 long )
    {
      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 )
    {
      return 0;			/* just set max_memory_to_use to 0 */
    }

    GLOBAL(void)
    jpeg_mem_term (j_common_ptr )
    {
      /* no work */
    }