onvif: Major overhaul of ONVIF support

Makes the ONVIF driver usable end-to-end against real-world cameras
(including budget Xiongmai/XM-chipset firmwares that are loose with the
spec), and adds WS-Discovery as a first-class entry path so users no
longer have to type host/port by hand.

Bug fixes
---------
- absoluteMove() / relativeMove() declared pan/tilt/zoom as int,
  truncating the normalized doubles to 0 or 1 and breaking every
  absolute/relative move.
- Drop the Basic auth Authorization header on every SOAP request. The
  WS-UsernameToken in the envelope already authenticates and some
  firmwares rejected the duplicate as ambiguous.
- Default port changed from 8899 to 80 (more common ONVIF default).
- sendRequest() bails out early on an empty URL instead of letting Qt
  emit `Protocol "" is unknown` once per command when an operation
  fires before GetCapabilities has populated the per-service XAddrs.
- Per-request transfer timeout (10s) so failures surface in seconds
  instead of waiting the OS TCP timeout (~2 min).
- Sanitize unescaped `&` inside SOAP body text before parsing. ONVIF
  cameras commonly emit `&protocol=` / `&channel=` etc. in stream URIs,
  which Python's lenient parser tolerates but Qt's QDomDocument
  rejects, dropping the whole document.

Preset save
-----------
SetPreset's response carries the camera-assigned PresetToken; the old
code ignored it, so memory_recall() never had a valid token to send
back. We now remember which slot triggered the SetPreset and apply the
new token to that slot when the response arrives. memory_reset() also
clears the stale local token after RemovePreset.

Clock-skew handling
-------------------
connectCamera() now starts with GetSystemDateAndTime (an
unauthenticated call per spec), computes the offset between camera and
host clocks, and adjusts every WS-Security `Created` timestamp by it.
Cameras with bad NTP no longer reject our calls as out-of-window.
ensureCapabilitiesRequested() makes GetCapabilities still happen if the
time probe errors out, so the device doesn't stay un-initialized.

Stale XAddr host rewrites
-------------------------
Some firmwares advertise their static/DHCP IP in WS-Discovery XAddrs
and in GetCapabilities responses even when reached via a different
address (NAT, multi-homed, IP changed since boot, etc.). We now
override the host of any XAddr that doesn't match the
responder/configured host with the address we know works — both in the
WS-Discovery parse and in handleGetCapabilitiesResponse.

Connection status + auto-reconnect
----------------------------------
PTZOnvif now calls setConnected() on every success/failure, so the
dock's red/green dot reflects reality. After 3 consecutive failures
(~15s), the device is marked disconnected and the next status-timer
tick restarts the full connect chain from GetSystemDateAndTime — so a
camera reboot or a network blip recovers without user intervention.

GetStatus polling
-----------------
A 5s timer polls GetStatus while connected, keeping cached pan/tilt/
zoom position in sync with the camera. The same timer drives the
reconnect retry when disconnected.

WS-Discovery + selection dialog
-------------------------------
Adding an ONVIF device now pops a dialog that:
- Sends a SOAP-over-UDP Probe to 239.255.255.250:3702 from every
  suitable interface (so multi-homed hosts find cameras on every LAN).
- Lists discovered cameras with host/port/manufacturer/model parsed
  from the response Scopes.
- Provides a manual-add row for cameras the multicast probe can't
  reach (different subnet, multicast-blocked LAN, etc.).
- Fetches per-profile RTSP stream URIs via GetCapabilities →
  GetProfiles → GetStreamUri, with the same clock-skew handling as the
  runtime driver and a SOAP-fault surface so auth/credential failures
  produce a readable error.
- Supports anonymous probing for cameras that don't require auth
  (empty password ⇒ skip WS-Security header entirely).
- Has a stream selector for which profile's URL to use when
  auto-creating a Media Source.
- Optionally auto-creates an OBS Media Source from the picked stream
  URI, with the user's credentials embedded as Basic auth so it
  survives token expiry.

Other new features
------------------
- Media profile combo in the device settings; persists across reloads.
- Imaging service: continuous focus moves + AutoFocusMode toggle, and
  WhiteBalance mode (AUTO/MANUAL). Focus is wired through PTZDevice's
  focus_changed and only fires on cameras that advertise an Imaging
  XAddr.
- Per-device speed multiplier slider (0.1..10.0) for cameras that
  accept ONVIF velocities above the spec maximum.
- SetHomePosition via right-click on the dock's Home button. Gated by
  a new virtual supportsSetHome() (default false), so VISCA/Pelco/USB
  devices show no menu and behavior there is unchanged.

Signed-off-by: Jonatã Bolzan Loss <jonata@jonata.org>

Author: jonata

CMakeLists.txt

@@ -125,7 +125,14 @@ endif()
 option(ENABLE_ONVIF "Enable ONVIF camera support" ON)
 if(ENABLE_ONVIF)
   add_compile_definitions(ENABLE_ONVIF)
-  target_sources(${CMAKE_PROJECT_NAME} PRIVATE src/ptz-onvif.cpp src/ptz-onvif.hpp)
+  target_sources(
+    ${CMAKE_PROJECT_NAME}
+    PRIVATE
+      src/ptz-onvif.cpp
+      src/ptz-onvif.hpp
+      src/onvif-discovery.cpp
+      src/onvif-discovery.hpp
+  )
 endif()
 
 option(ENABLE_SERIALPORT "Enable UART connected camera support" OFF)

data/locale/en-GB.ini

@@ -39,6 +39,7 @@ PTZ.Action.Preset.MoveUp.Tooltip="Move Preset Up"
 PTZ.Action.Preset.MoveDown.Tooltip="Move Preset Down"
 PTZ.Action.Preset.Remove.Tooltip="Remove selected preset"
 PTZ.Action.WhiteBalance.OnePushTrigger="Trigger One-Push White Balance"
+PTZ.Action.SetHome="Save current position as Home"
 PTZ.Dock.Name="PTZ Controls"
 PTZ.Dock.Lock.Name="Movement Locked"
 PTZ.Dock.Lock.Description="Camera locked to prevent movement while live. Click to unlock"
@@ -75,6 +76,31 @@ PTZ.Pelco.UsePelcoD="Use Pelco-D"
 PTZ.UVC.Name="USB Camera (UVC)"
 PTZ.ONVIF.Name="ONVIF (experimental)"
 PTZ.ONVIF.Warning="Warning: ONVIF support is experimental"
+PTZ.ONVIF.SpeedBoost="Speed Boost (multiplies normalized ONVIF velocity; spec max is 1.0)"
+PTZ.ONVIF.MediaProfile="Media Profile"
+PTZ.ONVIF.NoProfilesYet="(not loaded yet — apply and reopen)"
+PTZ.ONVIF.WbDefault="(leave camera default)"
+PTZ.ONVIF.Discovery.Title="Discover ONVIF Cameras"
+PTZ.ONVIF.Discovery.Rescan="Rescan"
+PTZ.ONVIF.Discovery.Searching="Searching the network for ONVIF cameras..."
+PTZ.ONVIF.Discovery.Found="Found %1 camera(s). Select one to add."
+PTZ.ONVIF.Discovery.NoResponse="No ONVIF cameras responded. Check that your camera is powered on and on the same network."
+PTZ.ONVIF.Discovery.UseCamera="Use Selected Camera"
+PTZ.ONVIF.Discovery.SelectHint="Select a camera from the list to see its details."
+PTZ.ONVIF.Discovery.Col.Host="Host"
+PTZ.ONVIF.Discovery.Col.Port="Port"
+PTZ.ONVIF.Discovery.Col.Manufacturer="Manufacturer"
+PTZ.ONVIF.Discovery.Col.Model="Model"
+PTZ.ONVIF.Discovery.CredentialsHint="Enter the camera username and password to fetch RTSP stream URLs (optional)."
+PTZ.ONVIF.Discovery.NeedCreds="Enter username and password to fetch stream URLs."
+PTZ.ONVIF.Discovery.FetchingStreams="Fetching stream URLs..."
+PTZ.ONVIF.Discovery.Streams="Streams"
+PTZ.ONVIF.Discovery.StreamError="Could not fetch streams: %1"
+PTZ.ONVIF.Discovery.AuthFailed="Authentication failed. Check the username and password."
+PTZ.ONVIF.Discovery.ManualPrompt="Don't see your camera? Add manually:"
+PTZ.ONVIF.Discovery.ManualAdd="Add"
+PTZ.ONVIF.Discovery.ManualLabel="(manual)"
+PTZ.ONVIF.Discovery.CreateMediaSource="Also create an OBS Media Source for this camera's stream"
 PTZ.Visca.TCP.Name="VISCA TCP"
 PTZ.Visca.TCP.HostPortName="VISCA/TCP %1:%2"
 PTZ.Visca.TCP.Description="VISCA TCP Connection"