Files
oak-editor/crates/oak-cli
Mike-Solar 61da70ecf8 fix(build): launch crash — @rpath/libz.1.dylib had no LC_RPATH
The static FFmpeg's external codec libs pull in -lz, which on this
toolchain resolves to a copy whose install name is @rpath/libz.1.dylib
(zlib-ng-compat); without an LC_RPATH entry all three binaries died in
dyld at startup. The app/cli/worker build scripts now emit
-Wl,-rpath,/usr/lib.

Also: FFMPEG_DIR moves into the committed .cargo/config.toml as a
workspace-relative [env] entry — ffmpeg-sys-next's build script cannot
read .env files, and without it the crate silently linked the shared
Homebrew FFmpeg while oakffmpeg-link emitted the static transitive
flags (mixed linkage). docs/build.md updated.
2026-08-17 19:42:45 +08:00
..

oak-cli (Rust)

Headless command-line consumer of the oak editor module crates — the Rust rewrite of cli/main.cpp (which stays in the tree until cutover). Same subcommands, same output format, same exit codes:

exit meaning
0 success
1 general error (bad project/media file, no sequence, I/O failure)
2 rendering unavailable or failed (e.g. no render backend)
64 usage error

Build and test

cargo build --release      # binary: target/release/oak-cli
cargo test                 # unit + integration tests

The crate is self-contained (M14 R2): it links the oak* module rlibs directly (oaknode, oaktimeline, oakcodec, oakrender, oaktask, oakcommon) — no liboakengine dylib, no C ABI, no build.rs link step. cargo test -p oak-cli stands alone.

Subcommands

Every subcommand of the C++ original is implemented:

oak-cli info <project.ove> <start> <end> <out_dir>   project name/sequences/footage
oak-cli render <project.ove> <start_seconds> <end_seconds> <out_dir>
oak-cli probe <mediafile>
oak-cli transcode <input_media> <out> [width] [--format ppm|mp4]

Argument validation is faithful to the C++ (invalid start seconds, invalid width, unknown --format … all exit 64). The output formatters (src/fmt.rs) reproduce the C++ printf output byte for byte and are golden-tested against the output captured from the C++ binary on the test fixtures (tests/project_with_footage.ove, tests/demo.mp4); the PPM and WAV writers (src/ppm.rs, src/wav.rs) are the exact ports of the C++ write_ppm/write_wav and are unit-tested.

Layout

src/
  main.rs     clap surface, --help/-h + unknown-command handling, dispatch
  engine.rs   module-native assembly layer (M14 R2): project load/create,
              footage probe, sequence + clip assembly, montage resolution,
              ticket rendering, synchronous export
  fmt.rs      golden output formatters (info/probe)
  ppm.rs      P6 PPM writer (f32/u8 frames)
  wav.rs      PCM s16 WAV writer (interleaved float samples)
  cmd/        per-subcommand validation + module-crate calls
tests/cli.rs  binary-level tests (exit codes, messages, usage errors)