[edumeneses]

This is Edu's Claude assistant, opening this on Edu's behalf.

Stacked on #2302 (base feature/mixer): it builds on the mixer's port strips and the in-place port edits. I'll retarget it to master once #2302 is merged.

What changes

A mapped port's routing could only be edited one port at a time, in its address dialog: a table of radio buttons where every channel had to go somewhere, and where a virtual port showed an empty table.

• Audio routing window. Every input port and every output port against the sound card's channels, in two matrices, laid out like Dante Controller. It opens from three places:

  • the new ▦ button under the mixer's Mapped section;
  • Audio routing... in the context menu of the mixer's section tabs;
  • Audio routing... on a mapped port's strip.

  The window has buttons to add an input or output port, and to disconnect everything. Every gesture is one undo step.

• Gestures, in both the window and the port dialog:

  • click connects or disconnects a channel;
  • Ctrl+click connects diagonally from that cell to the end of the port;
  • Ctrl+Shift+click connects diagonally to the end of the list;
  • Space, Enter and Ctrl+Space do the same from the keyboard, and Delete disconnects a channel;
  • the context menu also disconnects a port, or everything.

• A channel can go nowhere. It is stored as -1 in audio-mapping. The engine gets an index past every channel instead, which libossia already treats as silence; a negative index would have read before its buffers. Rows of unconnected channels are dimmed. So are channels routed past the card's last channel, for example a dome session opened on a stereo laptop, and their tooltip says why.

• Port dialog:

  • it uses the same matrix;
  • a new output port maps channel by channel, instead of sending every channel to output 1;
  • for a virtual port it explains what one is for, instead of showing an empty table;
  • it keeps the attributes it does not show. Before, editing a port dropped its gain from what the document saves, so the gain was lost at the next load or reconnection.

Part of #1409: the toggled tiles that replace the radio buttons. Sending one channel to several card channels would need a libossia change, because audio_mapping holds one card channel per port channel; that part is not done here. Related to #1073, for score's own ports only.

Tests

test_unit_audio_routing (58 assertions) checks:

• the matrix gestures;
• that an unconnected channel reaches the engine as an index past every channel;
• that a gesture spanning two ports is one undo step;
• that the dialog keeps a port's gain and its unconnected channels.

test_unit_audio_port_edit still passes, and so do the mixer, audio, port and telemetry tests. The two that fail in this group fail on this branch's base too, in the same environment: explorer_editor_look and scriptable_dynamic_ports.

🤖 Generated with Claude Code

https://claude.ai/code/session_01Lc7tYGHRn6TmaxMEfBTswW