[Spice-devel] [PATCH spice-protocol 1/8] Add the VDAgentGraphicsDeviceInfo message

[Lukáš Hrázký]

On Wed, 2019-01-09 at 02:41 -0500, Frediano Ziglio wrote:
> > 
> > The message serves for passing the device address and device display ID
> > information for all display channels from SPICE server to the vd_agent.
> > 
> > Signed-off-by: Lukáš Hrázký <lhrazky at redhat.com>
> > ---
> >  spice/vd_agent.h | 15 +++++++++++++++
> >  1 file changed, 15 insertions(+)
> > 
> > diff --git a/spice/vd_agent.h b/spice/vd_agent.h
> > index dda7044..5e618b7 100644
> > --- a/spice/vd_agent.h
> > +++ b/spice/vd_agent.h
> > @@ -91,6 +91,7 @@ enum {
> >      VD_AGENT_CLIENT_DISCONNECTED,
> >      VD_AGENT_MAX_CLIPBOARD,
> >      VD_AGENT_AUDIO_VOLUME_SYNC,
> > +    VD_AGENT_GRAPHICS_DEVICE_INFO,
> >      VD_AGENT_END_MESSAGE,
> >  };
> >  
> > @@ -248,6 +249,19 @@ typedef struct SPICE_ATTR_PACKED VDAgentAudioVolumeSync
> > {
> >      uint16_t volume[0];
> >  } VDAgentAudioVolumeSync;
> >  
> > +typedef struct SPICE_ATTR_PACKED VDAgentDeviceDisplayInfo {
> > +    uint32_t channel_id;
> > +    uint32_t monitor_id;
> 
> Other parts of the SPICE protocol use 8 bit for these.
> Do you want to extend them in the future?
> Maybe better to put some comment on possible limits?

channel_id is 8 bits on the client <-> server line, monitor_id is 32
bits though. What comment on limits? You need to use existing valid
IDs, otherwise it won't work. I don't see any other limitation.

I can change them (or just channel_id) to 8 bits if you want... I'd
just leave them like this myself though.

> > +    uint32_t device_display_id;
> > +    uint32_t device_address_len;
> > +    uint8_t device_address[0];  // a zero-terminated string
> 
> Similar comments for spice-protocol for these last 2 fields.

Not sure what you mean by this...

Cheers,
Lukas

> > +} VDAgentDeviceDisplayInfo;
> > +
> > +typedef struct SPICE_ATTR_PACKED VDAgentGraphicsDeviceInfo {
> > +    uint32_t count;
> > +    VDAgentDeviceDisplayInfo device_info[0];
> > +} VDAgentGraphicsDeviceInfo;
> > +
> >  enum {
> >      VD_AGENT_CAP_MOUSE_STATE = 0,
> >      VD_AGENT_CAP_MONITORS_CONFIG,
> > @@ -264,6 +278,7 @@ enum {
> >      VD_AGENT_CAP_MONITORS_CONFIG_POSITION,
> >      VD_AGENT_CAP_FILE_XFER_DISABLED,
> >      VD_AGENT_CAP_FILE_XFER_DETAILED_ERRORS,
> > +    VD_AGENT_CAP_GRAPHICS_DEVICE_INFO,
> >      VD_AGENT_END_CAP,
> >  };
> >  
> 
> Frediano