Re: [PATCH spice-server] Do not compute stream_id more that necessary

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On Thu, Dec 07, 2017 at 10:26:57AM -0500, Frediano Ziglio wrote:
> > 
> > Hi,
> > 
> > On Thu, Dec 07, 2017 at 12:26:43PM +0000, Frediano Ziglio wrote:
> > > Reuse already computed value and avoid to compute in every
> > > iterations.
> > > 
> > > Signed-off-by: Frediano Ziglio <fziglio@xxxxxxxxxx>
> > > ---
> > >  server/dcc-send.c     | 4 ++--
> > >  server/video-stream.c | 2 +-
> > >  2 files changed, 3 insertions(+), 3 deletions(-)
> > > 
> > > diff --git a/server/dcc-send.c b/server/dcc-send.c
> > > index 975b222a..828a472f 100644
> > > --- a/server/dcc-send.c
> > > +++ b/server/dcc-send.c
> > > @@ -1743,7 +1743,7 @@ static bool red_marshall_stream_data(RedChannelClient
> > > *rcc,
> > >  
> > >          red_channel_client_init_send_data(rcc,
> > >          SPICE_MSG_DISPLAY_STREAM_DATA);
> > >  
> > > -        stream_data.base.id = display_channel_get_video_stream_id(display,
> > > stream);
> > > +        stream_data.base.id = stream_id;
> > >          stream_data.base.multi_media_time = frame_mm_time;
> > >          stream_data.data_size = outbuf->size;
> > >  
> > > @@ -1753,7 +1753,7 @@ static bool red_marshall_stream_data(RedChannelClient
> > > *rcc,
> > >  
> > >          red_channel_client_init_send_data(rcc,
> > >          SPICE_MSG_DISPLAY_STREAM_DATA_SIZED);
> > >  
> > > -        stream_data.base.id = display_channel_get_video_stream_id(display,
> > > stream);
> > > +        stream_data.base.id = stream_id;
> > >          stream_data.base.multi_media_time = frame_mm_time;
> > >          stream_data.data_size = outbuf->size;
> > >          stream_data.width = copy->src_area.right - copy->src_area.left;
> > > diff --git a/server/video-stream.c b/server/video-stream.c
> > > index 619e5ed3..b45c318b 100644
> > > --- a/server/video-stream.c
> > > +++ b/server/video-stream.c
> > > @@ -298,10 +298,10 @@ static void attach_stream(DisplayChannel *display,
> > > Drawable *drawable, VideoStre
> > >          stream->num_input_frames++;
> > >      }
> > >  
> > > +    int stream_id = display_channel_get_video_stream_id(display, stream);
> > 
> > Sorry if I missed it but declarations are not in the top of block
> > anymore?
> > 
> 
> There's nothing about in out style document. The all at the beginning style
> is C89 and former, from configure.ac

I think we've usually avoided doing this, I personally don't have strong
feelings either way.

Christophe

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