gstreamer1.0-vaapi: Fix playback breaking bug

gstreamer-vaapi fails to play files with specific frame sizes
because of buffer allocation issues. Fix is a backport.

Fixes [YOCTO #11311].

(From OE-Core rev: e01eb9b37ba5512d6fd9893c70b1f4d766fab2ac)

Signed-off-by: Jussi Kukkonen <jussi.kukkonen@intel.com>
Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-multimedia/gstreamer/gstreamer-vaapi/vaapivideobufferpool-create-allocator-if-needed.patch

@@ -0,0 +1,61 @@
+Signed-off-by: Jussi Kukkonen <jussi.kukkonen@intel.com>
+Upstream-Status: Backport [commit 59a731be6b in '1.10' branch]
+
+
+From 02a6002c3a80b3a5301c0943b1a1518bbdf439fc Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?V=C3=ADctor=20Manuel=20J=C3=A1quez=20Leal?=
+ <vjaquez@igalia.com>
+Date: Fri, 21 Apr 2017 19:07:18 +0200
+Subject: [PATCH] vaapivideobufferpool: create allocator if needed
+
+Backport to branch 1.10
+
+Sometimes a video decoder could set different buffer pool
+configurations, because their frame size changes. In this case we
+did not reconfigure the allocator.
+
+This patch enables this use case, creating a new allocator inside
+the VAAPI buffer pool if the caps changed, if it is not dmabuf-based.
+If so, it is just reconfigured, since it doesn't have a surface pool.
+
+https://bugzilla.gnome.org/show_bug.cgi?id=781577
+---
+ gst/vaapi/gstvaapivideobufferpool.c | 21 +++++++++++++++++++++
+ 1 file changed, 21 insertions(+)
+
+diff --git a/gst/vaapi/gstvaapivideobufferpool.c b/gst/vaapi/gstvaapivideobufferpool.c
+index a3b9223f..9a50614b 100644
+--- a/gst/vaapi/gstvaapivideobufferpool.c
++++ b/gst/vaapi/gstvaapivideobufferpool.c
+@@ -159,6 +159,27 @@ gst_vaapi_video_buffer_pool_set_config (GstBufferPool * pool,
+     gst_object_replace ((GstObject **) & priv->allocator, NULL);
+   priv->video_info = new_vip;
+ 
++  {
++    guint surface_alloc_flags;
++    gboolean vinfo_changed = FALSE;
++
++    if (allocator) {
++      const GstVideoInfo *alloc_vinfo =
++          gst_allocator_get_vaapi_video_info (allocator, &surface_alloc_flags);
++      vinfo_changed = gst_video_info_changed (alloc_vinfo, &new_vip);
++    }
++
++    if (vinfo_changed && allocator && priv->use_dmabuf_memory) {
++      gst_allocator_set_vaapi_video_info (allocator, &new_vip,
++          surface_alloc_flags);
++    } else if (!priv->use_dmabuf_memory && (vinfo_changed || !allocator)) {
++      /* let's destroy the other allocator and create a new one */
++      allocator = gst_vaapi_video_allocator_new (priv->display, &new_vip,
++          surface_alloc_flags);
++      gst_buffer_pool_config_set_allocator (config, allocator, NULL);
++    }
++  }
++
+   if (!gst_buffer_pool_config_has_option (config,
+           GST_BUFFER_POOL_OPTION_VAAPI_VIDEO_META))
+     goto error_no_vaapi_video_meta_option;
+-- 
+2.11.0
+
+

meta/recipes-multimedia/gstreamer/gstreamer1.0-vaapi_1.10.4.bb

@@ -2,4 +2,6 @@ require gstreamer1.0-vaapi.inc
 SRC_URI[md5sum] = "318af17f906637570b61dd7be9b5581d"
 SRC_URI[sha256sum] = "03e690621594d9f9495d86c7dac8b8590b3a150462770ed070dc76f66a70de75"
 
+SRC_URI += "file://vaapivideobufferpool-create-allocator-if-needed.patch"
+
 DEPENDS += "gstreamer1.0 gstreamer1.0-plugins-base gstreamer1.0-plugins-bad"