From 6f8ea02b614768e183f825cd25025e478f63eac2 Mon Sep 17 00:00:00 2001
From: Wangfei <fei.w.wang@intel.com>
Date: Thu, 22 Aug 2019 14:33:54 +0800
Subject: [PATCH] vaapidecode: support transform ROI meta

This will benefit the use case like:

src --->   encode    ---> decode ---> circle ROI ---> sink
     |                |
     --> analyse to -->
         get ROI
---
 gst/vaapi/gstvaapidecode.c | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/gst/vaapi/gstvaapidecode.c b/gst/vaapi/gstvaapidecode.c
index c93dcd6e6c..a677d3796c 100644
--- a/gst/vaapi/gstvaapidecode.c
+++ b/gst/vaapi/gstvaapidecode.c
@@ -1434,6 +1434,22 @@ gst_vaapidecode_sink_event (GstVideoDecoder * vdec, GstEvent * event)
   return GST_VIDEO_DECODER_CLASS (parent_class)->sink_event (vdec, event);
 }
 
+static gboolean
+gst_vaapidecode_transform_meta (GstVideoDecoder *
+    vdec, GstVideoCodecFrame * frame, GstMeta * meta)
+{
+  const GstMetaInfo *info = meta->info;
+
+  if (GST_VIDEO_DECODER_CLASS (parent_class)->transform_meta (vdec, frame,
+          meta))
+    return TRUE;
+
+  if (!g_strcmp0 (g_type_name (info->type), "GstVideoRegionOfInterestMeta"))
+    return TRUE;
+
+  return FALSE;
+}
+
 static void
 gst_vaapidecode_class_init (GstVaapiDecodeClass * klass)
 {
@@ -1470,6 +1486,8 @@ gst_vaapidecode_class_init (GstVaapiDecodeClass * klass)
   vdec_class->sink_query = GST_DEBUG_FUNCPTR (gst_vaapidecode_sink_query);
   vdec_class->getcaps = GST_DEBUG_FUNCPTR (gst_vaapidecode_sink_getcaps);
   vdec_class->sink_event = GST_DEBUG_FUNCPTR (gst_vaapidecode_sink_event);
+  vdec_class->transform_meta =
+      GST_DEBUG_FUNCPTR (gst_vaapidecode_transform_meta);
 
   map = (GstVaapiDecoderMap *) g_type_get_qdata (G_OBJECT_CLASS_TYPE (klass),
       GST_VAAPI_DECODE_PARAMS_QDATA);