Bug 1 - Mute unmute not sticking (G560 and others):
- Root cause: on_node_info was reading volume/mute from info->props which
contains static initial values only — NOT updated at runtime. When any
node info event fired, it overwrote the correct runtime state with stale
initial data, causing the unmute to revert on the next graph event.
- Fix: Subscribe nodes to SPA_PARAM_Props in addition to SPA_PARAM_Format.
Handle SPA_PARAM_Props in on_node_param to track volume (both SPA_PROP_volume
and SPA_PROP_channelVolumes averaged) and mute from the authoritative live
parameter stream. Remove stale volume/mute reads from on_node_info.
- Also fix mute detection in /api/mute: check "mute":true precisely instead
of searching for bare "true" anywhere in the body.
Bug 2 - Loading profiles does not work:
- loadProfile was only applying connections when already in "activated" mode.
Load now always applies the profile connections immediately.
Bug 3 - No option to update an existing profile:
- Add "Update" button in profile list that overwrites the profile with current
connections (calls saveProfile with the existing name).
- Clear the profile name input after "Save Current" succeeds.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
- Rewrote applyVolumeAtMouse to use hitarea element's screen rect directly
- Works correctly regardless of zoom/pan level
- Made hitarea taller (18px) for easier grabbing
- Toggle button next to 'Merge Nodes' in toolbar
- When active: skips merge rules, each PipeWire node shown separately
- Green=output, red=input (no confusing duplex merging)
- Defaults to off (merged mode)
- When merge rules combine input+output nodes, mode is set to 'duplex'
- Duplex nodes: blue border (#49a), blue-tinted bg, dark blue header
- Visually distinct from green=output, red=input nodes
Buffer Control:
- GET /api/quantum - reads current graph quantum via pw-metadata
- POST /api/quantum {quantum:N} - sets quantum via pw-metadata
- Toolbar dropdown with presets: 32, 64, 128, 256, 512, 1024, 2048, 4096
- Loads current quantum on startup
Text Selection Fix:
- Added user-select: none to wrap and canvas CSS
- Node text no longer gets selected when dragging
- Removed duplicated/broken code from property parsing
- Always shows Channels and Sample Rate for audio nodes
- Shows 'default' if sample rate not available on node
- Latency shows ms calculation when sample rate known
- Added fallback: clock.rate, api.alsa.rate
- node.rate was a PipeWire internal flag (always 1), not sample rate
- Now reads from node.latency (format: '256/48000') for quantum + rate
- Fallback to clock.rate if latency not available
- Reuses rate field for ALSA period-size
- Shows 'Latency: 256 samples @ 48000 Hz' and 'Period Size: 256'
- TCP Tunnel Sink/Source now open a dialog asking for host:port
- TCP Network Server uses configurable port (shown in dropdown)
- Host defaults to 127.0.0.1, port defaults to 4713
- Config persists across clicks (netHost/netPort state)
Backend:
- POST /api/create-null-sink {name} - loads null-sink module
- POST /api/create-loopback {name} - loads loopback module
- POST /api/unload-module {module_id} - unloads a module
- Fixed double-proxy-destroy crash in GraphEngine
- Graceful failure when module not available (no crash)
Frontend:
- + Add Device button in toolbar with dropdown menu
- Null Sink option (creates virtual audio output)
- Loopback Device option (creates paired input+output)
- Dropdown closes on outside click
Note: null-sink requires libpipewire-module-null-sink to be installed.
Loopback works on all PipeWire installations.
Added transparent hitarea rect over the full slider area (14px tall).
Handle is pointer-events:none so clicks pass through to hitarea.
Clicking anywhere on the slider bar now jumps volume there.
- Mute button click no longer triggers node drag (priority check in onMouseDown)
- Volume slider clamped to 0-100% in both display and API
- Added draggable circle handle on slider end
- Volume drag state tracked globally, not per-element
- Backend: fixed spa_pod_builder API usage (push_object/pop with frame)
- Volume calculated from SVG coordinates properly via svgPoint conversion
- Volume slider on every node (green bar, draggable)
- Mute toggle button (M/m) on every node
- Backend: read volume/mute from PipeWire node props
- Backend: POST /api/volume {node_id, volume} to set volume
- Backend: POST /api/mute {node_id, mute} to toggle mute
- Graph JSON includes volume and mute fields per node
- Slider supports drag-to-adjust with mouse
C++ backend with SSE streaming (reuses qpwgraph PipeWire callbacks).
Svelte frontend with custom SVG canvas for port-level connections.
Features:
- Live PipeWire graph via SSE
- Drag output->input port to connect
- Double-click or select+Delete to disconnect
- Node positions saved to localStorage
- Pan (drag bg) and zoom (scroll)
- Port type coloring (audio=green, midi=red, video=blue)
