> 
> From: Victor Toso <m...@victortoso.com>
> 
> Instead of passing the id parameter for destroy_display_stream() which
> is only used for debug, let's store the id when creating the stream at
> display_stream_create().
> 
> With the removal of Id parameter, we are using a gpointer for
> display_stream struct to comply with GDestroyNotify type and use this,
> for instance in g_clear_pointer() without warnings.
> 
> Benefits of this patch:
> * We can drop a helper function in a follow up patch;
> * Function is now a GDestroyNotify type;
> 
> Signed-off-by: Victor Toso <victort...@redhat.com>
> ---
>  src/channel-display-priv.h |  1 +
>  src/channel-display.c      | 23 +++++++++++------------
>  2 files changed, 12 insertions(+), 12 deletions(-)
> 
> diff --git a/src/channel-display-priv.h b/src/channel-display-priv.h
> index 1389868..94c9913 100644
> --- a/src/channel-display-priv.h
> +++ b/src/channel-display-priv.h
> @@ -115,6 +115,7 @@ typedef struct drops_sequence_stats {
>  
>  struct display_stream {
>      /* from messages */
> +    uint32_t                    id;
>      uint32_t                    flags;
>      SpiceRect                   dest;
>      display_surface             *surface;
> diff --git a/src/channel-display.c b/src/channel-display.c
> index 45fe38c..de40798 100644
> --- a/src/channel-display.c
> +++ b/src/channel-display.c
> @@ -106,7 +106,7 @@ static display_surface
> *find_surface(SpiceDisplayChannelPrivate *c, guint32 surf
>  static void spice_display_channel_reset(SpiceChannel *channel, gboolean
>  migrating);
>  static void spice_display_channel_reset_capabilities(SpiceChannel *channel);
>  static void destroy_canvas(display_surface *surface);
> -static void destroy_display_stream(display_stream *st, int id);
> +static void destroy_display_stream(gpointer st);
>  static void display_session_mm_time_reset_cb(SpiceSession *session, gpointer
>  data);
>  static SpiceGlScanout* spice_gl_scanout_copy(const SpiceGlScanout *scanout);
>  
> @@ -1236,13 +1236,15 @@ gint64 get_stream_id_by_stream(SpiceChannel *channel,
> display_stream *st)
>  }
>  
>  /* coroutine context */
> -static display_stream *display_stream_create(SpiceChannel *channel, uint32_t
> surface_id,
> +static display_stream *display_stream_create(SpiceChannel *channel,
> +                                             uint32_t id, uint32_t
> surface_id,
>                                               uint32_t flags, uint32_t
>                                               codec_type,
>                                               const SpiceRect *dest, const
>                                               SpiceClip *clip)
>  {
>      SpiceDisplayChannelPrivate *c = SPICE_DISPLAY_CHANNEL(channel)->priv;
>      display_stream *st = g_new0(display_stream, 1);
>  
> +    st->id = id;
>      st->flags = flags;
>      st->dest = *dest;
>      st->clip = *clip;
> @@ -1267,8 +1269,7 @@ static display_stream
> *display_stream_create(SpiceChannel *channel, uint32_t sur
>      }
>      if (st->video_decoder == NULL) {
>          spice_printerr("could not create a video decoder for codec %u",
>          codec_type);
> -        destroy_display_stream(st, 0);
> -        st = NULL;
> +        g_clear_pointer(&st, destroy_display_stream);
>      }
>      return st;
>  }
> @@ -1281,10 +1282,7 @@ static void destroy_stream(SpiceChannel *channel, int
> id)
>      g_return_if_fail(c->streams != NULL);
>      g_return_if_fail(c->nstreams > id);
>  
> -    if (c->streams[id]) {
> -        destroy_display_stream(c->streams[id], id);
> -        c->streams[id] = NULL;
> -    }
> +    g_clear_pointer(&c->streams[id], destroy_display_stream);
>  }
>  
>  static void display_handle_stream_create(SpiceChannel *channel, SpiceMsgIn
>  *in)
> @@ -1307,7 +1305,7 @@ static void display_handle_stream_create(SpiceChannel
> *channel, SpiceMsgIn *in)
>      }
>      g_return_if_fail(c->streams[op->id] == NULL);
>  
> -    c->streams[op->id] = display_stream_create(channel, op->surface_id,
> +    c->streams[op->id] = display_stream_create(channel, op->id,
> op->surface_id,
>                                                 op->flags, op->codec_type,
>                                                 &op->dest, &op->clip);
>      if (c->streams[op->id] == NULL) {
> @@ -1598,17 +1596,18 @@ static void display_handle_stream_clip(SpiceChannel
> *channel, SpiceMsgIn *in)
>      display_update_stream_region(st);
>  }
>  
> -static void destroy_display_stream(display_stream *st, int id)
> +static void destroy_display_stream(gpointer st_pointer)
>  {

I would keep the "display_stream *st" parameter

>      int i;
> +    display_stream *st = st_pointer;
>  
>      if (st->num_input_frames > 0) {
>          guint64 drops_duration_total = 0;
>          guint32 num_out_frames = st->num_input_frames -
>          st->arrive_late_count - st->num_drops_on_playback;
> -        CHANNEL_DEBUG(st->channel, "%s: id=%d #in-frames=%u out/in=%.2f "
> +        CHANNEL_DEBUG(st->channel, "%s: id=%u #in-frames=%u out/in=%.2f "
>              "#drops-on-receive=%u avg-late-time(ms)=%.2f "
>              "#drops-on-playback=%u", __FUNCTION__,
> -            id,
> +            st->id,
>              st->num_input_frames,
>              num_out_frames / (double)st->num_input_frames,
>              st->arrive_late_count,

Frediano
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