b700902200
- services/framecache/client/fc_pipe.c: new slot→stdout pipe adapter
- Opens framecache slot as consumer (independent cursor per instance)
- Streams raw UYVY422 frames to stdout continuously
- SIGPIPE detection via write() return — exits cleanly on ffmpeg exit
- SIGTERM/SIGINT clean stop from capture-manager
- Periodic stats to stderr (every 300 frames)
- Exit codes: 0=clean, 1=slot not found, 2=EPIPE
- services/framecache/CMakeLists.txt: add fc_pipe target + install
- services/framecache/Dockerfile: copy fc_pipe to runtime image
- services/capture/Dockerfile:
- New fc-pipe-builder stage (builds fc_pipe from framecache sources)
- Copies fc_pipe binary to /usr/local/bin/fc_pipe in runtime image
- services/capture/src/capture-manager.js:
- _buildInputArgs: new framecache path for deltacast + sdi/blackmagic
when FC_SLOT_ID env is set (injected by node-agent from bridge fmt JSON)
- Spawns fc_pipe <slot_id> as child process
- Uses pipe:0 as ffmpeg rawvideo input 0
- Audio FIFO (unchanged) as ffmpeg input 1
- Falls back to legacy FIFO path when FC_SLOT_ID unset
- audioMap: covers blackmagic via framecache (input 1 for audio FIFO)
- isInterlacedSource: covers blackmagic interlaced signals
- hiresStdio: pipe stdin when bridgeProcess set (fc_pipe stdout→ffmpeg)
- Non-growing spawn: pipes fc_pipe.stdout → ffmpeg.stdin
- Growing orchestrator spawn: pipes fc_pipe.stdout → bash.stdin
- sdiHlsDir: covers blackmagic source type
- Session state stores _fcPipeProcess for clean stop
- stop(): sends SIGTERM to fc_pipe after ffmpeg SIGINT
50 lines
2.1 KiB
CMake
50 lines
2.1 KiB
CMake
cmake_minimum_required(VERSION 3.16)
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project(framecache C)
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set(CMAKE_C_STANDARD 11)
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set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wall -Wextra -O2")
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# ── libmicrohttpd ────────────────────────────────────────────────────
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find_library(MHD_LIB microhttpd REQUIRED)
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find_path(MHD_INCLUDE microhttpd.h REQUIRED)
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include_directories(${MHD_INCLUDE})
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# ── framecache server ────────────────────────────────────────────────
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add_executable(framecache
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src/framecache.c
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src/slot.c
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src/registry.c
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)
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target_link_libraries(framecache ${MHD_LIB} rt pthread)
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# ── fc_client static library (used by bridges + test) ───────────────
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add_library(fc_client STATIC
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client/fc_client.c
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src/slot.c # client needs fc_slot_shm_size / fc_frame_at
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)
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target_include_directories(fc_client PUBLIC src client)
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target_link_libraries(fc_client rt pthread)
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# ── fc_pipe — slot → stdout adapter (used by capture-manager.js) ─────
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# Spawned by capture-manager as a child process; writes raw UYVY422
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# frames from a framecache slot to stdout so ffmpeg reads them as
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# rawvideo pipe input. Multiple fc_pipe instances on the same slot
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# each get an independent cursor — zero-copy fan-out.
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add_executable(fc_pipe
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client/fc_pipe.c
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)
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target_link_libraries(fc_pipe fc_client)
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target_include_directories(fc_pipe PRIVATE src client)
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# ── test consumer (dev utility) ──────────────────────────────────────
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if(BUILD_TESTS)
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add_executable(fc_test_consumer
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client/fc_test_consumer.c
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)
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target_link_libraries(fc_test_consumer fc_client)
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target_include_directories(fc_test_consumer PRIVATE src client)
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endif()
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install(TARGETS framecache fc_pipe DESTINATION bin)
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install(FILES client/fc_client.h src/slot.h DESTINATION include/framecache)
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install(TARGETS fc_client DESTINATION lib)
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