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plugins: fix ref counting of GstVaapiVideoMemory allocator.

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Fix reference counting issue whereby gst_memory_init() does not hold
an extra reference to the GstAllocator. So, there could be situations
where the last instance of GstVaapiVideoAllocator gets released before
a dangling GstVaapiVideoMemory object, thus possibly leading to a crash.
This commit is contained in:
Gwenole Beauchesne 2013-07-12 17:14:49 +02:00
parent d79d561819
commit c82a1bc0ff
1 changed files with 2 additions and 1 deletions
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3
gst/vaapi/gstvaapivideomemory.c
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@ -218,7 +218,7 @@ gst_vaapi_video_memory_new(GstAllocator *base_allocator,
return NULL;
vip = &allocator->image_info;
gst_memory_init(&mem->parent_instance, 0, base_allocator, NULL,
gst_memory_init(&mem->parent_instance, 0, gst_object_ref(allocator), NULL,
GST_VIDEO_INFO_SIZE(vip), 0, 0, GST_VIDEO_INFO_SIZE(vip));
mem->proxy = NULL;
@ -239,6 +239,7 @@ gst_vaapi_video_memory_free(GstVaapiVideoMemory *mem)
gst_vaapi_object_replace(&mem->surface, NULL);
gst_vaapi_object_replace(&mem->image, NULL);
gst_vaapi_video_meta_unref(mem->meta);
gst_object_unref(GST_MEMORY_CAST(mem)->allocator);
g_slice_free(GstVaapiVideoMemory, mem);
}