Repo created

TMessagesProj/jni/mozjpeg/jmemnobs.c

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+/*
+ * jmemnobs.c
+ *
+ * This file was part of the Independent JPEG Group's software:
+ * Copyright (C) 1992-1996, Thomas G. Lane.
+ * libjpeg-turbo Modifications:
+ * Copyright (C) 2017-2018, D. R. Commander.
+ * For conditions of distribution and use, see the accompanying README.ijg
+ * 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.
+ */
+
+#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(size_t size);
+extern void free(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.
+ */
+
+GLOBAL(void *)
+jpeg_get_large(j_common_ptr cinfo, size_t sizeofobject)
+{
+  return (void *)malloc(sizeofobject);
+}
+
+GLOBAL(void)
+jpeg_free_large(j_common_ptr cinfo, void *object, size_t sizeofobject)
+{
+  free(object);
+}
+
+
+/*
+ * This routine computes the total memory space available for allocation.
+ */
+
+GLOBAL(size_t)
+jpeg_mem_available(j_common_ptr cinfo, size_t min_bytes_needed,
+                   size_t max_bytes_needed, size_t already_allocated)
+{
+  if (cinfo->mem->max_memory_to_use) {
+    if ((size_t)cinfo->mem->max_memory_to_use > already_allocated)
+      return cinfo->mem->max_memory_to_use - already_allocated;
+    else
+      return 0;
+  } else {
+    /* Here we always say, "we got all you want bud!" */
+    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 */
+}