[Bug 789476] vaapi plugins: append allocator in allocation query

[GStreamer (GNOME Bugzilla)]

https://bugzilla.gnome.org/show_bug.cgi?id=789476

--- Comment #27 from Tomas Rataj <rataj28 at gmail.com> ---
GstVideoInfo * old in gst_video_info_changed is NULL.

==11868== Thread 4 videotestsrc0:sr:
==11868== Invalid read of size 8
==11868==    at 0x7E745B0: gst_video_info_changed (gstvaapipluginutil.c:754)
==11868==    by 0x7E7EA60: gst_vaapi_video_buffer_pool_set_config
(gstvaapivideobufferpool.c:174)
==11868==    by 0x4E79D01: gst_buffer_pool_set_config (gstbufferpool.c:687)
==11868==    by 0x7C279C3: gst_base_src_decide_allocation_default
(gstbasesrc.c:3071)
==11868==    by 0x776FC61: gst_video_test_src_decide_allocation
(gstvideotestsrc.c:860)
==11868==    by 0x7C2BC7F: gst_base_src_prepare_allocation (gstbasesrc.c:3134)
==11868==    by 0x7C2BC7F: gst_base_src_negotiate (gstbasesrc.c:3272)
==11868==    by 0x7C2BC7F: gst_base_src_loop (gstbasesrc.c:2691)
==11868==    by 0x4EDEB88: gst_task_func (gsttask.c:335)
==11868==    by 0x563800F: ??? (in
/lib/x86_64-linux-gnu/libglib-2.0.so.0.5400.3)
==11868==    by 0x5637644: ??? (in
/lib/x86_64-linux-gnu/libglib-2.0.so.0.5400.3)
==11868==    by 0x5CEC519: start_thread (pthread_create.c:465)
==11868==    by 0x5FF83EE: clone (clone.S:95)
==11868==  Address 0x0 is not stack'd, malloc'd or (recently) free'd
==11868== 
Caught SIGSEGV

libva info: VA-API version 1.0.0
libva info: va_getDriverName() returns 0
libva info: Trying to open /usr/lib/x86_64-linux-gnu/dri/i965_drv_video.so
libva info: Found init function __vaDriverInit_1_0
libva info: va_openDriver() returns 0
vainfo: VA-API version: 1.0 (libva 2.0.0)
vainfo: Driver version: Intel i965 driver for Intel(R) Ivybridge Mobile - 2.0.0
vainfo: Supported profile and entrypoints
      VAProfileMPEG2Simple            :    VAEntrypointVLD
      VAProfileMPEG2Simple            :    VAEntrypointEncSlice
      VAProfileMPEG2Main              :    VAEntrypointVLD
      VAProfileMPEG2Main              :    VAEntrypointEncSlice
      VAProfileH264ConstrainedBaseline:    VAEntrypointVLD
      VAProfileH264ConstrainedBaseline:    VAEntrypointEncSlice
      VAProfileH264Main               :    VAEntrypointVLD
      VAProfileH264Main               :    VAEntrypointEncSlice
      VAProfileH264High               :    VAEntrypointVLD
      VAProfileH264High               :    VAEntrypointEncSlice
      VAProfileH264StereoHigh         :    VAEntrypointVLD
      VAProfileVC1Simple              :    VAEntrypointVLD
      VAProfileVC1Main                :    VAEntrypointVLD
      VAProfileVC1Advanced            :    VAEntrypointVLD
      VAProfileNone                   :    VAEntrypointVideoProc
      VAProfileJPEGBaseline           :    VAEntrypointVLD

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