From 119afdde2a4ec14cd100bf286a16a5b644f7ebbd Mon Sep 17 00:00:00 2001
From: Guillaume Desmottes <guillaume.desmottes@collabora.com>
Date: Sat, 8 Jun 2019 12:15:56 +0530
Subject: [PATCH] cdg: cdgdec: reset interpreter when flushing

Prevent visual artifacts from the previous position when seeking to a
not keyframe.

Dumping cdg_renderer version as we need the new reset API.
---
 gst-plugin-cdg/Cargo.toml    | 2 +-
 gst-plugin-cdg/src/cdgdec.rs | 8 ++++++++
 2 files changed, 9 insertions(+), 1 deletion(-)

diff --git a/gst-plugin-cdg/Cargo.toml b/gst-plugin-cdg/Cargo.toml
index 69ff5d4f..2d22589f 100644
--- a/gst-plugin-cdg/Cargo.toml
+++ b/gst-plugin-cdg/Cargo.toml
@@ -14,7 +14,7 @@ gstreamer-base = { git = "https://gitlab.freedesktop.org/gstreamer/gstreamer-rs"
 gstreamer-video = { git = "https://gitlab.freedesktop.org/gstreamer/gstreamer-rs", features = ["v1_12"] }
 gstreamer-app = { git = "https://gitlab.freedesktop.org/gstreamer/gstreamer-rs" }
 cdg = "0.1"
-cdg_renderer = "0.3"
+cdg_renderer = "0.4"
 image = "0.22"
 muldiv = "0.2"
 lazy_static = "1.0"
diff --git a/gst-plugin-cdg/src/cdgdec.rs b/gst-plugin-cdg/src/cdgdec.rs
index c1abb7b8..477d5c0e 100644
--- a/gst-plugin-cdg/src/cdgdec.rs
+++ b/gst-plugin-cdg/src/cdgdec.rs
@@ -214,6 +214,14 @@ impl VideoDecoderImpl for CdgDec {
 
         self.parent_decide_allocation(element, query)
     }
+
+    fn flush(&self, element: &gst_video::VideoDecoder) -> bool {
+        gst_debug!(CAT, obj: element, "flushing, reset CDG interpreter");
+
+        let mut cdg_inter = self.cdg_inter.lock().unwrap();
+        cdg_inter.reset(false);
+        true
+    }
 }
 
 pub fn register(plugin: &gst::Plugin) -> Result<(), glib::BoolError> {