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/* GStreamer
* Copyright (C) 2017 Sebastian Dröge <sebastian@centricular.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "gstphysmemory.h"
G_DEFINE_INTERFACE (GstPhysMemoryAllocator, gst_phys_memory_allocator,
GST_TYPE_ALLOCATOR);
static void
gst_phys_memory_allocator_default_init (GstPhysMemoryAllocatorInterface * iface)
{
}
/**
* gst_is_phys_memory:
* @mem: a #GstMemory
*
* Returns: whether the memory at @mem is backed by physical memory
*
* Since: 1.14
*/
gboolean
gst_is_phys_memory (GstMemory * mem)
{
return mem != NULL && mem->allocator != NULL
&& g_type_is_a (G_OBJECT_TYPE (mem->allocator),
GST_TYPE_PHYS_MEMORY_ALLOCATOR);
}
/**
* gst_phys_memory_get_phys_addr:
* @mem: a #GstMemory
*
* Returns: Physical memory address that is backing @mem, or 0 if none
*
* Since: 1.14
*/
guintptr
gst_phys_memory_get_phys_addr (GstMemory * mem)
{
GstPhysMemoryAllocatorInterface *iface;
g_return_val_if_fail (gst_is_phys_memory (mem), 0);
iface = GST_PHYS_MEMORY_ALLOCATOR_GET_INTERFACE (mem->allocator);
g_return_val_if_fail (iface->get_phys_addr != NULL, 0);
return iface->get_phys_addr ((GstPhysMemoryAllocator *) mem->allocator, mem);
}
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