load_graph/stop_node/start_node each called notify() (push to all
clients) and then sent a direct response — the requesting client
got two identical messages, breaking test recv sequencing.
Use thread_local tl_requester to skip the requesting connection
in the push. notify() is called synchronously from the command,
so the thread_local is visible from the status_cb. Other clients
still receive the push; the requester gets only the direct response.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Edges that share the same source node and port now get the same MXL flow
UUID. One writer, multiple independent readers — each tracks its own
position in the ring buffer. Enables 1-to-N routing in graph.json without
any splitter node.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
studio-manager now accepts an optional path argument:
dmf-studio-manager graph.json
load_graph() parses nodes and edges from JSON, generating fresh UUIDs
for each MXL flow on every launch. Falls back to hardcoded build_graph()
when no argument is given.
graph.json at repo root defines the current testpattern→ndiout pipeline.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Readers (ndiout, fakesink) now handle MXL_ERR_FLOW_INVALID by releasing
and recreating the flow reader, then realigning the index to current time.
This lets consumer nodes survive a producer restart without exiting.
All mxlCreateInstance/FlowWriter/FlowReader options args changed from
nullptr to "" to match MXL reference implementation style.
mxlReleaseFlowReader calls guarded with null checks so cleanup is safe
when a mid-run reconnect attempt fails.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
studio-manager: call mxlGarbageCollectFlows before launching nodes to
clean up stale flow directories left by previous crashed runs.
shared/NodeBase.hpp: add mxl_status_str(mxlStatus) — converts error
codes to readable names (e.g. MXL_ERR_OUT_OF_RANGE_TOO_LATE). All
nodes now log these names instead of raw integers.
shared/FlowDef.hpp: use "audio/float32" as media_type for 32-bit audio
flows, matching the MXL SDK examples. audio/L{n} kept for other depths.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
testpattern now optionally writes an audio flow when audio_flow_id is
wired in the graph. Each channel generates a sine wave at (c+1)*1000 Hz
(ch0=1kHz, ch1=2kHz, ...) at -18 dBFS broadcast reference level.
Phase is derived from the absolute audio_index so there are no clicks
at frame boundaries. One audio chunk per video frame (1920 samples at
48kHz/25fps), written via mxlFlowWriterOpenSamples with ring-buffer
fragment and channel stride handling matching ndiin.
build_graph: separate UUIDs for testpattern and ndiin flows; wire
testpattern audio_flow_id (no sink yet).
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
V210.hpp: add fill_colorbars, fill_ire_ramp, fill_black, fill_white.
Shared fill_solid helper stamps the first line across all rows via
memcpy. Generic write_palette_line template handles both SMPTE and
IRE bar palettes. fill_frame kept as a backward-compat alias.
testpattern/main.cpp: read "pattern" from node config and dispatch
to the appropriate fill function (bars/ire/black/white).
build_graph: pass {"pattern","bars"} to testpattern node params.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
- FlowDef.hpp: add make_audio_flow_def (NMOS IS-04 audio/Lnn flow)
- NDIReceiver: replace capture_v210 with capture() — single recv call
dispatches to FrameKind::{Video,Audio,None}; AudioInfo struct carries
sample_rate/channels/samples/channel_stride
- ndiin: optional audio writer when graph wires audio_flow_id; single
loop with 5ms NDI poll; audio grains written immediately on arrival;
video grains written when mxlGetCurrentIndex reaches video_index
- build_graph: rename ndiin video port flow_id → video_flow_id; add
audio_flow_id edge (no sink yet — wired to ndiin only)
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Share a single UUID across both edges so both readers connect to the
same MXL flow. MXL supports multiple readers per flow natively — each
reader has its own read pointer into the ring buffer.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
JohannesItten