src/gallium/state_trackers/va/htab.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2010 Younes Manton.
   4  * All Rights Reserved.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the
   8  * "Software"), to deal in the Software without restriction, including
   9  * without limitation the rights to use, copy, modify, merge, publish,
  10  * distribute, sub license, and/or sell copies of the Software, and to
  11  * permit persons to whom the Software is furnished to do so, subject to
  12  * the following conditions:
  13  *
  14  * The above copyright notice and this permission notice (including the
  15  * next paragraph) shall be included in all copies or substantial portions
  16  * of the Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  19  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  20  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  21  * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
  22  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  23  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  24  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25  *
  26  **************************************************************************/
  27
  28 #include <util/u_handle_table.h>
  29 #include <os/os_thread.h>
  30
  31 #include "va_private.h"
  32
  33 #ifdef VL_HANDLES
  34 static struct handle_table *htab = NULL;
  35 pipe_static_mutex(htab_lock);
  36 #endif
  37
  38 bool vlCreateHTAB(void)
  39 {
  40 #ifdef VL_HANDLES
  41    bool ret;
  42    /* Make sure handle table handles match VAAPI handles. */
  43    assert(sizeof(unsigned) <= sizeof(VAGenericID));
  44    pipe_mutex_lock(htab_lock);
  45    if (!htab)
  46       htab = handle_table_create();
  47    ret = htab != NULL;
  48    pipe_mutex_unlock(htab_lock);
  49    return ret;
  50 #else
  51    return TRUE;
  52 #endif
  53 }
  54
  55 void vlDestroyHTAB(void)
  56 {
  57 #ifdef VL_HANDLES
  58    pipe_mutex_lock(htab_lock);
  59    if (htab) {
  60       handle_table_destroy(htab);
  61       htab = NULL;
  62    }
  63    pipe_mutex_unlock(htab_lock);
  64 #endif
  65 }
  66
  67 VAGenericID vlAddDataHTAB(void *data)
  68 {
  69    assert(data);
  70 #ifdef VL_HANDLES
  71    VAGenericID handle = 0;
  72    pipe_mutex_lock(htab_lock);
  73    if (htab)
  74       handle = handle_table_add(htab, data);
  75    pipe_mutex_unlock(htab_lock);
  76    return handle;
  77 #else
  78    return (VAGenericID)data;
  79 #endif
  80 }
  81
  82 void* vlGetDataHTAB(VAGenericID handle)
  83 {
  84    assert(handle);
  85 #ifdef VL_HANDLES
  86    void *data = NULL;
  87    pipe_mutex_lock(htab_lock);
  88    if (htab)
  89       data = handle_table_get(htab, handle);
  90    pipe_mutex_unlock(htab_lock);
  91    return data;
  92 #else
  93    return (void*)handle;
  94 #endif
  95 }