/* * 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 cinfo, size_t sizeofobject){  return (void *) malloc(sizeofobject);}GLOBAL(void)jpeg_free_small (j_common_ptr cinfo, void * object, size_t sizeofobject){  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 cinfo, size_t sizeofobject){  return (void FAR *) malloc(sizeofobject);}GLOBAL(void)jpeg_free_large (j_common_ptr cinfo, void FAR * object, size_t sizeofobject){  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 cinfo, long min_bytes_needed,		    long max_bytes_needed, long already_allocated){  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 info,			 long total_bytes_needed){  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){  return 0;			/* just set max_memory_to_use to 0 */}GLOBAL(void)jpeg_mem_term (j_common_ptr cinfo){  /* no work */}