>
> 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>
> ---
>
> I have simplified the patch to reuse the existing
> SPICE_DISPLAY_OVERLAY signal (with pipeline_ptr == NULL), instead of
> creating a new one dedicated to the native MJPEG decoder.
>
> ---
> src/channel-display-mjpeg.c | 2 ++
> src/channel-display-priv.h | 2 +-
> src/channel-display.c | 12 ++++++++++++
> src/spice-widget.c | 9 ++++++++-
> 4 files changed, 23 insertions(+), 2 deletions(-)
>
> diff --git a/src/channel-display-mjpeg.c b/src/channel-display-mjpeg.c
> index 647d31b..6f1a4d7 100644
> --- a/src/channel-display-mjpeg.c
> +++ b/src/channel-display-mjpeg.c
> @@ -300,5 +300,7 @@ VideoDecoder* create_mjpeg_decoder(int codec_type,
> display_stream *stream)
>
> /* All the other fields are initialized to zero by g_new0(). */
>
> + show_mjpeg_widget(stream);
> +
Why not just calling hand_pipeline_to_widget passing NULL as pipeline?
> return (VideoDecoder*)decoder;
> }
> diff --git a/src/channel-display-priv.h b/src/channel-display-priv.h
> index b5d6728..90e08ac 100644
> --- a/src/channel-display-priv.h
> +++ b/src/channel-display-priv.h
> @@ -198,7 +198,7 @@ void stream_dropped_frame_on_playback(display_stream
> *st);
> void stream_display_frame(display_stream *st, SpiceFrame *frame, uint32_t
> width, uint32_t height, int stride, uint8_t* data);
> guintptr get_window_handle(display_stream *st);
> gboolean hand_pipeline_to_widget(display_stream *st, GstPipeline
> *pipeline);
> -
> +gboolean show_mjpeg_widget(display_stream *st);
> void spice_frame_free(SpiceFrame *frame);
>
> G_END_DECLS
> diff --git a/src/channel-display.c b/src/channel-display.c
> index 59c809d..b8a27e3 100644
> --- a/src/channel-display.c
> +++ b/src/channel-display.c
> @@ -1484,6 +1484,18 @@ gboolean hand_pipeline_to_widget(display_stream *st,
> GstPipeline *pipeline)
> return res;
> }
>
> +G_GNUC_INTERNAL
> +gboolean show_mjpeg_widget(display_stream *st)
> +{
> + gboolean res = false;
> +
> + if (st->surface->streaming_mode) {
> + g_signal_emit(st->channel, signals[SPICE_DISPLAY_OVERLAY], 0, NULL,
> &res);
> + }
> +
> + return res;
> +}
> +
> /* after a sequence of 3 drops, push a report to the server, even
> * if the report window is bigger */
> #define STREAM_REPORT_DROP_SEQ_LEN_LIMIT 3
> 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())) {
Frediano
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