forked from unom/punktfunk
MediaCodec scales whatever it decodes to fill the Surface it renders into, and the Surface filled the screen — so a stream whose resolution didn't match the panel's aspect came out stretched. Nothing downstream of the Surface can correct that; the Surface itself has to carry the aspect. Size the video to the negotiated mode's ratio, centred, with the remainder black. The mode is known from the handshake before the first frame arrives, via a new `nativeVideoSize` (the same `client.mode()` the HUD already reports as `w×h@hz`); an older native lib returning nothing falls back to filling, exactly as before. Input follows the picture. Direct-pointer touch, multi-touch passthrough and the pen lane all map positions against the size of the node they sit on, so the gesture layer moves onto the same rect as the video and all three stay correct by construction instead of each needing an offset threaded through it. The physical-mouse path can't work that way — its events arrive from the activity in WINDOW coordinates — so it now measures against the SurfaceView's rect on screen, subtracting the letterbox origin and clamping into the picture: a pointer out on a bar has no host position of its own, and the edge is the honest answer for it. One deliberate consequence: trackpad swipes that START inside a letterbox bar no longer register. Trackpad input is relative and could have kept the whole panel, but one rule — input lands on the picture — beats a mode- dependent input surface, and the pen lane rides inside trackpad mode too. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>