Build instructions and CI for MacOS and Windows

[acolombier]

[boehs]

attempting build on macOS:

   Compiling ureq v3.1.0
   Compiling taglib-sys v2.1.1 (https://github.com/acolombier/taglib-rust.git?tag=v2.1.1#46c781e3)
   Compiling subtle v2.6.1
   Compiling serde v1.0.219
   Compiling rawpointer v0.2.1
   Compiling ort-sys v2.0.0-rc.10
   Compiling num-integer v0.1.46
   Compiling num-complex v0.4.6
error: failed to run custom build command for `taglib-sys v2.1.1 (https://github.com/acolombier/taglib-rust.git?tag=v2.1.1#46c781e3)`

Caused by:
  process didn't exit successfully: `/Users/evan/Code/builds/stemgen/target/release/build/taglib-sys-9c3a8027630027cf/build-script-build` (exit status: 101)
  --- stdout
  cargo:rerun-if-env-changed=TAGLIB_C_NO_PKG_CONFIG
  cargo:rerun-if-env-changed=PKG_CONFIG_aarch64-apple-darwin
  cargo:rerun-if-env-changed=PKG_CONFIG_aarch64_apple_darwin
  cargo:rerun-if-env-changed=HOST_PKG_CONFIG
  cargo:rerun-if-env-changed=PKG_CONFIG
  cargo:rerun-if-env-changed=TAGLIB_C_STATIC
  cargo:rerun-if-env-changed=TAGLIB_C_DYNAMIC
  cargo:rerun-if-env-changed=PKG_CONFIG_ALL_STATIC
  cargo:rerun-if-env-changed=PKG_CONFIG_ALL_DYNAMIC
  cargo:rerun-if-env-changed=PKG_CONFIG_PATH_aarch64-apple-darwin
  cargo:rerun-if-env-changed=PKG_CONFIG_PATH_aarch64_apple_darwin
  cargo:rerun-if-env-changed=HOST_PKG_CONFIG_PATH
  cargo:rerun-if-env-changed=PKG_CONFIG_PATH
  cargo:rerun-if-env-changed=PKG_CONFIG_LIBDIR_aarch64-apple-darwin
  cargo:rerun-if-env-changed=PKG_CONFIG_LIBDIR_aarch64_apple_darwin
  cargo:rerun-if-env-changed=HOST_PKG_CONFIG_LIBDIR
  cargo:rerun-if-env-changed=PKG_CONFIG_LIBDIR
  cargo:rerun-if-env-changed=PKG_CONFIG_SYSROOT_DIR_aarch64-apple-darwin
  cargo:rerun-if-env-changed=PKG_CONFIG_SYSROOT_DIR_aarch64_apple_darwin
  cargo:rerun-if-env-changed=HOST_PKG_CONFIG_SYSROOT_DIR
  cargo:rerun-if-env-changed=PKG_CONFIG_SYSROOT_DIR

  --- stderr

  thread 'main' (2907322) panicked at /Users/evan/.cargo/git/checkouts/taglib-rust-8b75419231747a88/46c781e/taglib-sys/build.rs:23:9:
  Could not find taglib_c via pkgconfig
  note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace

edit: tried installing taglib, now

error: could not find native static library `tag_c`, perhaps an -L flag is missing?

error: could not compile `taglib-sys` (lib) due to 1 previous error
warning: build failed, waiting for other jobs to finish..

[boehs]

I gave up and used docker. When I run evan@EvanAir stemgen % docker run -v /Users/evan/Music/Music:/data -it --rm aclmb/stemgen:main-all generate /data/Curbi,\ PollyAnna\ -\ Vertigo.mp3 /data/ --verbose the command exits seemingly sucessfully but only creates a 44 byte file ending in .stem.mp4

Last outputs are

Transform tree:
    mdct_fwd_float_c - type: mdct_float, len: 128, factors[2]: [2, any], flags: [unaligned, out_of_place, fwd_only]
        fft64_ns_float_c - type: fft_float, len: 64, factor: 2, flags: [unaligned, inplace, out_of_place, preshuf]
[SWR @ 0x4002f57400] Using fltp internally between filters
[mp3float @ 0x4002be1040] skip 1105 / discard 0 samples due to side data
[mp3float @ 0x4002be1040] Could not update timestamps for skipped samples.
[mp3float @ 0x4002be1040] skip 1105/1152 samples

[acolombier]

Thanks for the feedback!
Regarding the bare install, you will need to install my fork of taglib, which contains support for STEM metadata (will be submitted upstream once thoroughly tested)
You also need to install the exact FFmpeg version referenced in Cargo.toml file, due to Rust bindings (note that static FFmpeg will help fixing this!)

Not sure why you are getting an empty file, sis you try using other codecs? (--codecs)
If yes, would you mind sharing the audio file (e.g by email or something like GDrive) so I can make sure the issue is OS related)

[boehs]

Curbi, PollyAnna - Vertigo.mp3

I tried --codec alac and flac, and the output changes eg:

[flac @ 0x40024dc040]  compression: 5
[flac @ 0x40024dc040]  lpc type: Levinson-Durbin recursion with Welch window
[flac @ 0x40024dc040]  prediction order: 1, 8
[flac @ 0x40024dc040]  order method: estimate
[flac @ 0x40024dc040]  partition order: 0, 8
[flac @ 0x40024dc040]  block size: 1024
[flac @ 0x40024dc040]  lpc precision: 15
[SWR @ 0x405e6730c0] Using fltp internally between filters
[mp3float @ 0x4002b6f400] skip 1105 / discard 0 samples due to side data
[mp3float @ 0x4002b6f400] Could not update timestamps for skipped samples.
[mp3float @ 0x4002b6f400] skip 1105/1152 samples

but file the same:

evan@EvanAir Music % hexyl /Users/evan/Music/Music/Curbi,\ PollyAnna\ -\ Vertigo.stem.mp4
┌────────┬─────────────────────────┬─────────────────────────┬────────┬────────┐
│00000000│ 00 00 00 1c 66 74 79 70 ┊ 69 73 6f 6d 00 00 02 00 │⋄⋄⋄•ftyp┊isom⋄⋄•⋄│
│00000010│ 69 73 6f 6d 69 73 6f 32 ┊ 6d 70 34 31 00 00 00 08 │isomiso2┊mp41⋄⋄⋄•│
│00000020│ 66 72 65 65 00 00 00 00 ┊ 6d 64 61 74             │free⋄⋄⋄⋄┊mdat    │
└────────┴─────────────────────────┴─────────────────────────┴────────┴────────┘

to debug this logging could be better. verbose really only impacts ffmpeg output atm, no info about demucs

---

uninportant because i'm in no hurry but if native mac builds are possible that is huge due to CoreML instead of the CPU fallback