vpx_mem/nds/vpx_mem_nds.c

   1 /*
   2  *  Copyright (c) 2010 The VP8 project authors. All Rights Reserved.
   3  *
   4  *  Use of this source code is governed by a BSD-style license and patent
   5  *  grant that can be found in the LICENSE file in the root of the source
   6  *  tree. All contributing project authors may be found in the AUTHORS
   7  *  file in the root of the source tree.
   8  */
   9
  10
  11 #define __VPX_MEM_C__
  12 #include "vpx_mem.h"
  13 #include <nitro.h>
  14 #include "vpx_mem_intrnl.h"
  15
  16 // Allocate memory from the Arena specified by id.  Align it to
  17 //  the value specified by align.
  18 void *vpx_mem_nds_alloc(osarena_id id, osheap_handle handle, size_t size, size_t align)
  19 {
  20     void *addr,
  21          * x = NULL;
  22
  23     addr = os_alloc_from_heap((osarena_id) id, handle,
  24                               size + align - 1 + ADDRESS_STORAGE_SIZE);
  25
  26     if (addr)
  27     {
  28         x = align_addr((unsigned char *)addr + ADDRESS_STORAGE_SIZE, (int)align);
  29
  30         // save the actual malloc address
  31         ((size_t *)x)[-1] = (size_t)addr;
  32     }
  33
  34     return x;
  35 }
  36
  37 // Free them memory allocated by vpx_mem_nds_alloc
  38 void vpx_mem_nds_free(osarena_id id, osheap_handle handle, void *mem)
  39 {
  40     if (mem)
  41     {
  42         void *addr = (void *)(((size_t *)mem)[-1]);
  43         os_free_to_heap(id, handle, addr);
  44     }
  45 }
  46
  47 int vpx_nds_alloc_heap(osarena_id id, u32 size)
  48 {
  49     osheap_handle    arena_handle;
  50     void           *nstart;
  51     void           *heap_start;
  52
  53     nstart = os_init_alloc(id, os_get_arena_lo(id), os_get_arena_hi(id), 1);
  54     os_set_arena_lo(id, nstart);
  55
  56     heap_start = os_alloc_from_arena_lo(id, size, 32);
  57     arena_handle = os_create_heap(id, heap_start, (void *)((u32)heap_start + size));
  58
  59     if (os_check_heap(id, arena_handle) == -1)
  60         return -1;      //ERROR: DTCM heap is not consistent
  61
  62     (void)os_set_current_heap(id, arena_handle);
  63
  64     return arena_handle;
  65 }