dlls/mf/mf_private.h

   1 /*
   2  * Copyright 2019 Nikolay Sivov for CodeWeavers
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Lesser General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2.1 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Lesser General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Lesser General Public
  15  * License along with this library; if not, write to the Free Software
  16  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  17  */
  18
  19 #include "mferror.h"
  20 #include "mfidl.h"
  21 #include "mfapi.h"
  22
  23 #include "wine/heap.h"
  24 #include "wine/debug.h"
  25
  26 static inline BOOL mf_array_reserve(void **elements, size_t *capacity, size_t count, size_t size)
  27 {
  28     size_t new_capacity, max_capacity;
  29     void *new_elements;
  30
  31     if (count <= *capacity)
  32         return TRUE;
  33
  34     max_capacity = ~(SIZE_T)0 / size;
  35     if (count > max_capacity)
  36         return FALSE;
  37
  38     new_capacity = max(4, *capacity);
  39     while (new_capacity < count && new_capacity <= max_capacity / 2)
  40         new_capacity *= 2;
  41     if (new_capacity < count)
  42         new_capacity = max_capacity;
  43
  44     if (!(new_elements = heap_realloc(*elements, new_capacity * size)))
  45         return FALSE;
  46
  47     *elements = new_elements;
  48     *capacity = new_capacity;
  49
  50     return TRUE;
  51 }
  52
  53 struct activate_funcs
  54 {
  55     HRESULT (*create_object)(IMFAttributes *attributes, void *context, IUnknown **object);
  56     void (*shutdown_object)(void *context, IUnknown *object);
  57     void (*free_private)(void *context);
  58 };
  59
  60 HRESULT create_activation_object(void *context, const struct activate_funcs *funcs, IMFActivate **ret) DECLSPEC_HIDDEN;
  61
  62 static inline const char *debugstr_time(LONGLONG time)
  63 {
  64     ULONGLONG abstime = time >= 0 ? time : -time;
  65     unsigned int i = 0, j = 0;
  66     char buffer[23], rev[23];
  67
  68     while (abstime || i <= 8)
  69     {
  70         buffer[i++] = '0' + (abstime % 10);
  71         abstime /= 10;
  72         if (i == 7) buffer[i++] = '.';
  73     }
  74     if (time < 0) buffer[i++] = '-';
  75
  76     while (i--) rev[j++] = buffer[i];
  77     while (rev[j-1] == '0' && rev[j-2] != '.') --j;
  78     rev[j] = 0;
  79
  80     return wine_dbg_sprintf("%s", rev);
  81 }