From 3a8d50a355311f8f5dc286b7cc8da770e12986aa Mon Sep 17 00:00:00 2001
From: Sean DuBois <sean@siobud.com>
Date: Wed, 31 Jan 2018 07:34:32 +0000
Subject: [PATCH] aom: Implement flush for av1dec

https://bugzilla.gnome.org/show_bug.cgi?id=791674
---
 ext/aom/gstav1dec.c | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)

diff --git a/ext/aom/gstav1dec.c b/ext/aom/gstav1dec.c
index b2a9b51ad3..d33118e641 100644
--- a/ext/aom/gstav1dec.c
+++ b/ext/aom/gstav1dec.c
@@ -70,6 +70,7 @@ static gboolean gst_av1_dec_start (GstVideoDecoder * dec);
 static gboolean gst_av1_dec_stop (GstVideoDecoder * dec);
 static gboolean gst_av1_dec_set_format (GstVideoDecoder * dec,
     GstVideoCodecState * state);
+static gboolean gst_av1_dec_flush (GstVideoDecoder * dec);
 static GstFlowReturn
 gst_av1_dec_handle_frame (GstVideoDecoder * decoder,
     GstVideoCodecFrame * frame);
@@ -109,6 +110,8 @@ gst_av1_dec_class_init (GstAV1DecClass * klass)
 
   vdec_class->start = GST_DEBUG_FUNCPTR (gst_av1_dec_start);
   vdec_class->stop = GST_DEBUG_FUNCPTR (gst_av1_dec_stop);
+  vdec_class->flush = GST_DEBUG_FUNCPTR (gst_av1_dec_flush);
+
   vdec_class->set_format = GST_DEBUG_FUNCPTR (gst_av1_dec_set_format);
   vdec_class->handle_frame = GST_DEBUG_FUNCPTR (gst_av1_dec_handle_frame);
 
@@ -209,6 +212,24 @@ gst_av1_dec_set_format (GstVideoDecoder * dec, GstVideoCodecState * state)
   return TRUE;
 }
 
+static gboolean
+gst_av1_dec_flush (GstVideoDecoder * dec)
+{
+  GstAV1Dec *av1dec = GST_AV1_DEC_CAST (dec);
+
+  if (av1dec->output_state) {
+    gst_video_codec_state_unref (av1dec->output_state);
+    av1dec->output_state = NULL;
+  }
+
+  if (av1dec->decoder_inited) {
+    aom_codec_destroy (&av1dec->decoder);
+  }
+  av1dec->decoder_inited = FALSE;
+
+  return TRUE;
+}
+
 static GstFlowReturn
 gst_av1_dec_open_codec (GstAV1Dec * av1dec, GstVideoCodecFrame * frame)
 {