[RFC spice-server 1/2] streaming: Restart streams on video-codec changes

[Kevin Pouget <kpouget@xxxxxxxxxx>]

Interrupt/restart the video streams when the user changes the
preferred video-codecs (dcc_handle_preferred_video_codec_type) or when
the host admin updates the list of video-codecs allowed
(display_channel_set_video_codecs)
---
 server/dcc.c             | 2 ++
 server/display-channel.c | 2 ++
 server/video-stream.c    | 5 +++++
 3 files changed, 9 insertions(+)

diff --git a/server/dcc.c b/server/dcc.c
index a94e27e8..0deeed88 100644
--- a/server/dcc.c
+++ b/server/dcc.c
@@ -1201,6 +1201,8 @@ static int dcc_handle_preferred_video_codec_type(DisplayChannelClient *dcc,

     /* New client preference */
     dcc_update_preferred_video_codecs(dcc);
+    video_stream_detach_and_stop(DCC_TO_DC(dcc));
+
     return TRUE;
 }

diff --git a/server/display-channel.c b/server/display-channel.c
index 071c0140..4b8e6e90 100644
--- a/server/display-channel.c
+++ b/server/display-channel.c
@@ -255,6 +255,8 @@ void display_channel_set_video_codecs(DisplayChannel *display, GArray *video_cod
     g_clear_pointer(&display->priv->video_codecs, g_array_unref);
     display->priv->video_codecs = g_array_ref(video_codecs);
     g_object_notify(G_OBJECT(display), "video-codecs");
+
+    video_stream_detach_and_stop(display);
 }

 GArray *display_channel_get_video_codecs(DisplayChannel *display)
diff --git a/server/video-stream.c b/server/video-stream.c
index 4ac25af8..f227713b 100644
--- a/server/video-stream.c
+++ b/server/video-stream.c
@@ -925,6 +925,11 @@ void video_stream_detach_and_stop(DisplayChannel *display)
     RingItem *stream_item;

     spice_debug("trace");
+
+    if (!ring_is_initialized(&display->priv->streams)) {
+        return;
+    }
+
     while ((stream_item = ring_get_head(&display->priv->streams))) {
         VideoStream *stream = SPICE_CONTAINEROF(stream_item, VideoStream, link);

--
2.21.0
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