2026-06-01 07:47:32 -04:00
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cmake_minimum_required(VERSION 3.16)
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project(deltacast-bridge C)
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set(CMAKE_C_STANDARD 17)
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set(SDK_ROOT "/sdk" CACHE PATH "Path to extracted VideoMaster SDK")
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feat(deltacast): replace per-port bridges with shared multi-port daemon
The old architecture spawned one deltacast-capture per recorder port; each
called VHD_OpenBoardHandle, triggering a BufMngr.c:781 OOB fault in the
delta_x300 kernel driver whenever two opens raced.
Fix: a single deltacast-bridge daemon opens the board once, opens RX
streams for all requested ports concurrently, and writes each port's
video/audio to named FIFOs (/dev/shm/deltacast/video-<N>.fifo,
/dev/shm/deltacast/audio-<N>.fifo). Capture sidecars read from those
FIFOs directly — no board handle, no race, no flock.
Changes:
services/capture/deltacast-bridge/main.c
- Complete rewrite: --ports csv arg, board opened once, one
video+audio thread pair per port, FIFO paths per port, format
JSON emitted per port on signal lock, SIGTERM clean shutdown.
- flock/serialize logic removed (no longer needed).
- --port single-port compat alias retained.
services/capture/deltacast-bridge/CMakeLists.txt
- Rename target deltacast-capture -> deltacast-bridge.
- POST_BUILD symlink deltacast-capture -> deltacast-bridge for compat.
services/capture/src/capture-manager.js
- deltacast _buildInputArgs: remove bridge spawn; wait up to 30s
for FIFOs to exist (bridge may be starting); return rawvideo +
s16le FIFO inputArgs. bridgeProcess=null.
- audioMap: keyed on sourceType instead of bridgeProcess (both
inputs are always present for deltacast).
- Remove readFirstStderrLine helper (no longer needed).
- Remove bridgeProcess.stdout.pipe / processes.bridge stop signal.
services/node-agent/index.js
- Add import spawn for bridge daemon management.
- Add startDeltacastBridge / stopDeltacastBridge: host-process
lifecycle for the shared bridge, ref-counted by sidecar count.
- handleSidecarStart: on deltacast, increment counter + start bridge;
decrement on container create/start failure.
- handleSidecarStop: decrement counter; stop bridge when last sidecar.
- _containerSourceType map tracks containerId->sourceType for stop.
- Old acquireDcLock mutex retained but no longer called.
2026-06-01 20:21:52 -04:00
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# Primary binary: deltacast-bridge (shared multi-port daemon)
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add_executable(deltacast-bridge main.c)
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2026-06-01 07:47:32 -04:00
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feat(deltacast): replace per-port bridges with shared multi-port daemon
The old architecture spawned one deltacast-capture per recorder port; each
called VHD_OpenBoardHandle, triggering a BufMngr.c:781 OOB fault in the
delta_x300 kernel driver whenever two opens raced.
Fix: a single deltacast-bridge daemon opens the board once, opens RX
streams for all requested ports concurrently, and writes each port's
video/audio to named FIFOs (/dev/shm/deltacast/video-<N>.fifo,
/dev/shm/deltacast/audio-<N>.fifo). Capture sidecars read from those
FIFOs directly — no board handle, no race, no flock.
Changes:
services/capture/deltacast-bridge/main.c
- Complete rewrite: --ports csv arg, board opened once, one
video+audio thread pair per port, FIFO paths per port, format
JSON emitted per port on signal lock, SIGTERM clean shutdown.
- flock/serialize logic removed (no longer needed).
- --port single-port compat alias retained.
services/capture/deltacast-bridge/CMakeLists.txt
- Rename target deltacast-capture -> deltacast-bridge.
- POST_BUILD symlink deltacast-capture -> deltacast-bridge for compat.
services/capture/src/capture-manager.js
- deltacast _buildInputArgs: remove bridge spawn; wait up to 30s
for FIFOs to exist (bridge may be starting); return rawvideo +
s16le FIFO inputArgs. bridgeProcess=null.
- audioMap: keyed on sourceType instead of bridgeProcess (both
inputs are always present for deltacast).
- Remove readFirstStderrLine helper (no longer needed).
- Remove bridgeProcess.stdout.pipe / processes.bridge stop signal.
services/node-agent/index.js
- Add import spawn for bridge daemon management.
- Add startDeltacastBridge / stopDeltacastBridge: host-process
lifecycle for the shared bridge, ref-counted by sidecar count.
- handleSidecarStart: on deltacast, increment counter + start bridge;
decrement on container create/start failure.
- handleSidecarStop: decrement counter; stop bridge when last sidecar.
- _containerSourceType map tracks containerId->sourceType for stop.
- Old acquireDcLock mutex retained but no longer called.
2026-06-01 20:21:52 -04:00
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target_include_directories(deltacast-bridge PRIVATE
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2026-06-01 07:47:32 -04:00
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${SDK_ROOT}/include/videomaster
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)
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feat(deltacast): replace per-port bridges with shared multi-port daemon
The old architecture spawned one deltacast-capture per recorder port; each
called VHD_OpenBoardHandle, triggering a BufMngr.c:781 OOB fault in the
delta_x300 kernel driver whenever two opens raced.
Fix: a single deltacast-bridge daemon opens the board once, opens RX
streams for all requested ports concurrently, and writes each port's
video/audio to named FIFOs (/dev/shm/deltacast/video-<N>.fifo,
/dev/shm/deltacast/audio-<N>.fifo). Capture sidecars read from those
FIFOs directly — no board handle, no race, no flock.
Changes:
services/capture/deltacast-bridge/main.c
- Complete rewrite: --ports csv arg, board opened once, one
video+audio thread pair per port, FIFO paths per port, format
JSON emitted per port on signal lock, SIGTERM clean shutdown.
- flock/serialize logic removed (no longer needed).
- --port single-port compat alias retained.
services/capture/deltacast-bridge/CMakeLists.txt
- Rename target deltacast-capture -> deltacast-bridge.
- POST_BUILD symlink deltacast-capture -> deltacast-bridge for compat.
services/capture/src/capture-manager.js
- deltacast _buildInputArgs: remove bridge spawn; wait up to 30s
for FIFOs to exist (bridge may be starting); return rawvideo +
s16le FIFO inputArgs. bridgeProcess=null.
- audioMap: keyed on sourceType instead of bridgeProcess (both
inputs are always present for deltacast).
- Remove readFirstStderrLine helper (no longer needed).
- Remove bridgeProcess.stdout.pipe / processes.bridge stop signal.
services/node-agent/index.js
- Add import spawn for bridge daemon management.
- Add startDeltacastBridge / stopDeltacastBridge: host-process
lifecycle for the shared bridge, ref-counted by sidecar count.
- handleSidecarStart: on deltacast, increment counter + start bridge;
decrement on container create/start failure.
- handleSidecarStop: decrement counter; stop bridge when last sidecar.
- _containerSourceType map tracks containerId->sourceType for stop.
- Old acquireDcLock mutex retained but no longer called.
2026-06-01 20:21:52 -04:00
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target_link_directories(deltacast-bridge PRIVATE
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2026-06-01 07:47:32 -04:00
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${SDK_ROOT}/lib
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)
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feat(deltacast): replace per-port bridges with shared multi-port daemon
The old architecture spawned one deltacast-capture per recorder port; each
called VHD_OpenBoardHandle, triggering a BufMngr.c:781 OOB fault in the
delta_x300 kernel driver whenever two opens raced.
Fix: a single deltacast-bridge daemon opens the board once, opens RX
streams for all requested ports concurrently, and writes each port's
video/audio to named FIFOs (/dev/shm/deltacast/video-<N>.fifo,
/dev/shm/deltacast/audio-<N>.fifo). Capture sidecars read from those
FIFOs directly — no board handle, no race, no flock.
Changes:
services/capture/deltacast-bridge/main.c
- Complete rewrite: --ports csv arg, board opened once, one
video+audio thread pair per port, FIFO paths per port, format
JSON emitted per port on signal lock, SIGTERM clean shutdown.
- flock/serialize logic removed (no longer needed).
- --port single-port compat alias retained.
services/capture/deltacast-bridge/CMakeLists.txt
- Rename target deltacast-capture -> deltacast-bridge.
- POST_BUILD symlink deltacast-capture -> deltacast-bridge for compat.
services/capture/src/capture-manager.js
- deltacast _buildInputArgs: remove bridge spawn; wait up to 30s
for FIFOs to exist (bridge may be starting); return rawvideo +
s16le FIFO inputArgs. bridgeProcess=null.
- audioMap: keyed on sourceType instead of bridgeProcess (both
inputs are always present for deltacast).
- Remove readFirstStderrLine helper (no longer needed).
- Remove bridgeProcess.stdout.pipe / processes.bridge stop signal.
services/node-agent/index.js
- Add import spawn for bridge daemon management.
- Add startDeltacastBridge / stopDeltacastBridge: host-process
lifecycle for the shared bridge, ref-counted by sidecar count.
- handleSidecarStart: on deltacast, increment counter + start bridge;
decrement on container create/start failure.
- handleSidecarStop: decrement counter; stop bridge when last sidecar.
- _containerSourceType map tracks containerId->sourceType for stop.
- Old acquireDcLock mutex retained but no longer called.
2026-06-01 20:21:52 -04:00
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target_link_libraries(deltacast-bridge PRIVATE
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2026-06-01 07:47:32 -04:00
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videomasterhd
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videomasterhd_audio
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pthread
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)
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# Embed the SDK RPATH so the binary finds the .so at runtime
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feat(deltacast): replace per-port bridges with shared multi-port daemon
The old architecture spawned one deltacast-capture per recorder port; each
called VHD_OpenBoardHandle, triggering a BufMngr.c:781 OOB fault in the
delta_x300 kernel driver whenever two opens raced.
Fix: a single deltacast-bridge daemon opens the board once, opens RX
streams for all requested ports concurrently, and writes each port's
video/audio to named FIFOs (/dev/shm/deltacast/video-<N>.fifo,
/dev/shm/deltacast/audio-<N>.fifo). Capture sidecars read from those
FIFOs directly — no board handle, no race, no flock.
Changes:
services/capture/deltacast-bridge/main.c
- Complete rewrite: --ports csv arg, board opened once, one
video+audio thread pair per port, FIFO paths per port, format
JSON emitted per port on signal lock, SIGTERM clean shutdown.
- flock/serialize logic removed (no longer needed).
- --port single-port compat alias retained.
services/capture/deltacast-bridge/CMakeLists.txt
- Rename target deltacast-capture -> deltacast-bridge.
- POST_BUILD symlink deltacast-capture -> deltacast-bridge for compat.
services/capture/src/capture-manager.js
- deltacast _buildInputArgs: remove bridge spawn; wait up to 30s
for FIFOs to exist (bridge may be starting); return rawvideo +
s16le FIFO inputArgs. bridgeProcess=null.
- audioMap: keyed on sourceType instead of bridgeProcess (both
inputs are always present for deltacast).
- Remove readFirstStderrLine helper (no longer needed).
- Remove bridgeProcess.stdout.pipe / processes.bridge stop signal.
services/node-agent/index.js
- Add import spawn for bridge daemon management.
- Add startDeltacastBridge / stopDeltacastBridge: host-process
lifecycle for the shared bridge, ref-counted by sidecar count.
- handleSidecarStart: on deltacast, increment counter + start bridge;
decrement on container create/start failure.
- handleSidecarStop: decrement counter; stop bridge when last sidecar.
- _containerSourceType map tracks containerId->sourceType for stop.
- Old acquireDcLock mutex retained but no longer called.
2026-06-01 20:21:52 -04:00
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set_target_properties(deltacast-bridge PROPERTIES
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2026-06-01 07:47:32 -04:00
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INSTALL_RPATH "/usr/local/lib/deltacast"
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BUILD_WITH_INSTALL_RPATH TRUE
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feat(deltacast): replace per-port bridges with shared multi-port daemon
The old architecture spawned one deltacast-capture per recorder port; each
called VHD_OpenBoardHandle, triggering a BufMngr.c:781 OOB fault in the
delta_x300 kernel driver whenever two opens raced.
Fix: a single deltacast-bridge daemon opens the board once, opens RX
streams for all requested ports concurrently, and writes each port's
video/audio to named FIFOs (/dev/shm/deltacast/video-<N>.fifo,
/dev/shm/deltacast/audio-<N>.fifo). Capture sidecars read from those
FIFOs directly — no board handle, no race, no flock.
Changes:
services/capture/deltacast-bridge/main.c
- Complete rewrite: --ports csv arg, board opened once, one
video+audio thread pair per port, FIFO paths per port, format
JSON emitted per port on signal lock, SIGTERM clean shutdown.
- flock/serialize logic removed (no longer needed).
- --port single-port compat alias retained.
services/capture/deltacast-bridge/CMakeLists.txt
- Rename target deltacast-capture -> deltacast-bridge.
- POST_BUILD symlink deltacast-capture -> deltacast-bridge for compat.
services/capture/src/capture-manager.js
- deltacast _buildInputArgs: remove bridge spawn; wait up to 30s
for FIFOs to exist (bridge may be starting); return rawvideo +
s16le FIFO inputArgs. bridgeProcess=null.
- audioMap: keyed on sourceType instead of bridgeProcess (both
inputs are always present for deltacast).
- Remove readFirstStderrLine helper (no longer needed).
- Remove bridgeProcess.stdout.pipe / processes.bridge stop signal.
services/node-agent/index.js
- Add import spawn for bridge daemon management.
- Add startDeltacastBridge / stopDeltacastBridge: host-process
lifecycle for the shared bridge, ref-counted by sidecar count.
- handleSidecarStart: on deltacast, increment counter + start bridge;
decrement on container create/start failure.
- handleSidecarStop: decrement counter; stop bridge when last sidecar.
- _containerSourceType map tracks containerId->sourceType for stop.
- Old acquireDcLock mutex retained but no longer called.
2026-06-01 20:21:52 -04:00
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)
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# Compat symlink: deltacast-capture -> deltacast-bridge
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# (node-agent and any legacy scripts that reference the old name still work)
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add_custom_command(TARGET deltacast-bridge POST_BUILD
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COMMAND ${CMAKE_COMMAND} -E create_symlink
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$<TARGET_FILE:deltacast-bridge>
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$<TARGET_FILE_DIR:deltacast-bridge>/deltacast-capture
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COMMENT "Creating deltacast-capture compat symlink"
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)
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