Re: [PATCH] streaming: make draw-area visible on MJPEG encoder creation

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> 
> This patch allows the MJPEG encoder to inform the spice-widget that
> its video drawing area (draw-area) should be made visible on screen.
> 
> This is required to switch from GST video decoding to native MJPEG
> decoding, otherwise the gst-area remained on top and the MJPEG video
> stream was never shown.
> 
> Signed-off-by: Kevin Pouget <kpouget@xxxxxxxxxx>

Fine for me. Snir had the most comments on earlier versions.

> ---
>  src/channel-display-mjpeg.c | 3 +++
>  src/spice-widget.c          | 9 ++++++++-
>  2 files changed, 11 insertions(+), 1 deletion(-)
> 
> diff --git a/src/channel-display-mjpeg.c b/src/channel-display-mjpeg.c
> index 647d31b..636a98b 100644
> --- a/src/channel-display-mjpeg.c
> +++ b/src/channel-display-mjpeg.c
> @@ -300,5 +300,8 @@ VideoDecoder* create_mjpeg_decoder(int codec_type,
> display_stream *stream)
>  
>      /* All the other fields are initialized to zero by g_new0(). */
>  
> +    /* makes the draw-area visible */
> +    hand_pipeline_to_widget(stream, NULL);
> +
>      return (VideoDecoder*)decoder;
>  }
> diff --git a/src/spice-widget.c b/src/spice-widget.c
> index a9ba1f1..7c257ff 100644
> --- a/src/spice-widget.c
> +++ b/src/spice-widget.c
> @@ -2780,13 +2780,20 @@ static void gst_size_allocate(GtkWidget *widget,
> GdkRectangle *a, gpointer data)
>  }
>  
>  /* This callback should pass to the widget a pointer of the pipeline
> - * so that we can set pipeline and overlay related calls from here.
> + * so that we can the set GST pipeline and overlay related calls from
> + * here.  If the pipeline pointer is NULL, the drawing area of the
> + * native renderer is set visible.
>   */
>  static gboolean set_overlay(SpiceChannel *channel, void* pipeline_ptr,
>  SpiceDisplay *display)
>  {
>  #if defined(GDK_WINDOWING_X11)
>      SpiceDisplayPrivate *d = display->priv;
>  
> +    if (pipeline_ptr == NULL) {
> +        gtk_stack_set_visible_child_name(d->stack, "draw-area");
> +        return true;
> +    }
> +
>      /* GstVideoOverlay is currently used only under x */
>      if (!g_getenv("DISABLE_GSTVIDEOOVERLAY") &&
>          GDK_IS_X11_DISPLAY(gdk_display_get_default())) {
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