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annotate libs/libjpeg/jmemnobs.c @ 16:c6952cc82cca

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asset manager, android version
author John Tsiombikas <nuclear@member.fsf.org>
date Tue, 09 Jun 2015 18:38:33 +0300
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nuclear@14 1 /*
nuclear@14 2 * jmemnobs.c
nuclear@14 3 *
nuclear@14 4 * Copyright (C) 1992-1996, Thomas G. Lane.
nuclear@14 5 * This file is part of the Independent JPEG Group's software.
nuclear@14 6 * For conditions of distribution and use, see the accompanying README file.
nuclear@14 7 *
nuclear@14 8 * This file provides a really simple implementation of the system-
nuclear@14 9 * dependent portion of the JPEG memory manager. This implementation
nuclear@14 10 * assumes that no backing-store files are needed: all required space
nuclear@14 11 * can be obtained from malloc().
nuclear@14 12 * This is very portable in the sense that it'll compile on almost anything,
nuclear@14 13 * but you'd better have lots of main memory (or virtual memory) if you want
nuclear@14 14 * to process big images.
nuclear@14 15 * Note that the max_memory_to_use option is ignored by this implementation.
nuclear@14 16 */
nuclear@14 17
nuclear@14 18 #define JPEG_INTERNALS
nuclear@14 19 #include "jinclude.h"
nuclear@14 20 #include "jpeglib.h"
nuclear@14 21 #include "jmemsys.h" /* import the system-dependent declarations */
nuclear@14 22
nuclear@14 23 #ifndef HAVE_STDLIB_H /* <stdlib.h> should declare malloc(),free() */
nuclear@14 24 extern void * malloc JPP((size_t size));
nuclear@14 25 extern void free JPP((void *ptr));
nuclear@14 26 #endif
nuclear@14 27
nuclear@14 28
nuclear@14 29 /*
nuclear@14 30 * Memory allocation and freeing are controlled by the regular library
nuclear@14 31 * routines malloc() and free().
nuclear@14 32 */
nuclear@14 33
nuclear@14 34 GLOBAL(void *)
nuclear@14 35 jpeg_get_small (j_common_ptr cinfo, size_t sizeofobject)
nuclear@14 36 {
nuclear@14 37 return (void *) malloc(sizeofobject);
nuclear@14 38 }
nuclear@14 39
nuclear@14 40 GLOBAL(void)
nuclear@14 41 jpeg_free_small (j_common_ptr cinfo, void * object, size_t sizeofobject)
nuclear@14 42 {
nuclear@14 43 free(object);
nuclear@14 44 }
nuclear@14 45
nuclear@14 46
nuclear@14 47 /*
nuclear@14 48 * "Large" objects are treated the same as "small" ones.
nuclear@14 49 * NB: although we include FAR keywords in the routine declarations,
nuclear@14 50 * this file won't actually work in 80x86 small/medium model; at least,
nuclear@14 51 * you probably won't be able to process useful-size images in only 64KB.
nuclear@14 52 */
nuclear@14 53
nuclear@14 54 GLOBAL(void FAR *)
nuclear@14 55 jpeg_get_large (j_common_ptr cinfo, size_t sizeofobject)
nuclear@14 56 {
nuclear@14 57 return (void FAR *) malloc(sizeofobject);
nuclear@14 58 }
nuclear@14 59
nuclear@14 60 GLOBAL(void)
nuclear@14 61 jpeg_free_large (j_common_ptr cinfo, void FAR * object, size_t sizeofobject)
nuclear@14 62 {
nuclear@14 63 free(object);
nuclear@14 64 }
nuclear@14 65
nuclear@14 66
nuclear@14 67 /*
nuclear@14 68 * This routine computes the total memory space available for allocation.
nuclear@14 69 * Here we always say, "we got all you want bud!"
nuclear@14 70 */
nuclear@14 71
nuclear@14 72 GLOBAL(long)
nuclear@14 73 jpeg_mem_available (j_common_ptr cinfo, long min_bytes_needed,
nuclear@14 74 long max_bytes_needed, long already_allocated)
nuclear@14 75 {
nuclear@14 76 return max_bytes_needed;
nuclear@14 77 }
nuclear@14 78
nuclear@14 79
nuclear@14 80 /*
nuclear@14 81 * Backing store (temporary file) management.
nuclear@14 82 * Since jpeg_mem_available always promised the moon,
nuclear@14 83 * this should never be called and we can just error out.
nuclear@14 84 */
nuclear@14 85
nuclear@14 86 GLOBAL(void)
nuclear@14 87 jpeg_open_backing_store (j_common_ptr cinfo, backing_store_ptr info,
nuclear@14 88 long total_bytes_needed)
nuclear@14 89 {
nuclear@14 90 ERREXIT(cinfo, JERR_NO_BACKING_STORE);
nuclear@14 91 }
nuclear@14 92
nuclear@14 93
nuclear@14 94 /*
nuclear@14 95 * These routines take care of any system-dependent initialization and
nuclear@14 96 * cleanup required. Here, there isn't any.
nuclear@14 97 */
nuclear@14 98
nuclear@14 99 GLOBAL(long)
nuclear@14 100 jpeg_mem_init (j_common_ptr cinfo)
nuclear@14 101 {
nuclear@14 102 return 0; /* just set max_memory_to_use to 0 */
nuclear@14 103 }
nuclear@14 104
nuclear@14 105 GLOBAL(void)
nuclear@14 106 jpeg_mem_term (j_common_ptr cinfo)
nuclear@14 107 {
nuclear@14 108 /* no work */
nuclear@14 109 }