Re: [PATCH 10/22] Remove client_codecs global variable, moved inside the 'Stream' class

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> 
> From: Christophe de Dinechin <dinechin@xxxxxxxxxx>
> 
> It makes sense to place the codecs inside the Stream which is charged
> with setting it up, until we create a proper abstraction for input
> messages similar to what Message does for output messages in follow-up
> patches.
> 
> Signed-off-by: Christophe de Dinechin <dinechin@xxxxxxxxxx>
> ---
>  src/spice-streaming-agent.cpp | 13 +++++++++----
>  1 file changed, 9 insertions(+), 4 deletions(-)
> 
> diff --git a/src/spice-streaming-agent.cpp b/src/spice-streaming-agent.cpp
> index 4d24234..403e65c 100644
> --- a/src/spice-streaming-agent.cpp
> +++ b/src/spice-streaming-agent.cpp
> @@ -67,8 +67,11 @@ struct CursorMessage
>  
>  class Stream
>  {
> +    typedef std::set<SpiceVideoCodecType> codecs_t;
> +
>  public:
>      Stream(const char *name)
> +        : codecs()

this is not necessary

>      {
>          streamfd = open(name, O_RDWR);
>          if (streamfd < 0) {
> @@ -80,6 +83,8 @@ public:
>          close(streamfd);
>      }
>  
> +    const codecs_t &client_codecs() { return codecs; }
> +

I would add const here:

   const codecs_t &client_codecs() const { return codecs; }

>      int read_command(bool blocking);
>      size_t write_all(const void *buf, const size_t len);
>      int send_format(unsigned w, unsigned h, uint8_t c);
> @@ -98,6 +103,7 @@ private:
>  private:
>      int streamfd = -1;
>      std::mutex mutex;
> +    codecs_t codecs;

why not client_codecs?

>  };
>  
>  }} // namespace spice::streaming_agent
> @@ -105,7 +111,6 @@ private:
>  static bool streaming_requested = false;
>  static bool quit_requested = false;
>  static bool log_binary = false;
> -static std::set<SpiceVideoCodecType> client_codecs;
>  
>  int Stream::have_something_to_read(int timeout)
>  {
> @@ -139,9 +144,9 @@ void Stream::handle_stream_start_stop(uint32_t len)
>      streaming_requested = (msg[0] != 0); /* num_codecs */
>      syslog(LOG_INFO, "GOT START_STOP message -- request to %s streaming\n",
>             streaming_requested ? "START" : "STOP");
> -    client_codecs.clear();
> +    codecs.clear();
>      for (int i = 1; i <= msg[0]; ++i) {
> -        client_codecs.insert((SpiceVideoCodecType) msg[i]);
> +        codecs.insert((SpiceVideoCodecType) msg[i]);
>      }
>  }
>  
> @@ -432,7 +437,7 @@ do_capture(Stream &stream, const char *streamport, FILE
> *f_log)
>          syslog(LOG_INFO, "streaming starts now\n");
>          uint64_t time_last = 0;
>  
> -        std::unique_ptr<FrameCapture>
> capture(agent.GetBestFrameCapture(client_codecs));
> +        std::unique_ptr<FrameCapture>
> capture(agent.GetBestFrameCapture(stream.client_codecs()));
>          if (!capture) {
>              throw std::runtime_error("cannot find a suitable capture
>              system");
>          }

Frediano
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