initial commit

Author: diracdeltas

.gitignore

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+*.zip
+demucs/

Makefile

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+dist:
+	mkdir demucs && cp README.md demucs/README.txt && cp demucs.amxd demucs/ && cp *.js demucs/ && zip -r demucs demucs/*
+clean:
+	rm -r demucs/ && rm *.zip

README.md

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+# demucs for max (native version)
+
+ableton max device for separating a clip into stems (vocals, bass, drums,
+other) using https://github.com/facebookresearch/demucs.
+
+## download link
+
+TBD
+
+## before you start
+
+all instructions were tested with Max 8.1 / Ableton 10.1 and will not work for earlier versions. this is beta software and may not work with all operating systems. 
+
+### windows steps:
+
+1. install the latest **python 3.9** windows installer from https://www.python.org/downloads/. in the installer, make sure to enable the setting that adds Python to your path and disable the "path length variable limit" option when you get to the end of the install process.
+
+> :white_check_mark: to test, run `python -V` or `py -V` in CMD.exe, if there is no output or something other than `Python 3.9.X` then something is wrong
+
+2. open windows environment variable editor and remove `.JS;` from PATHEXT follwing [these instructions](https://web.archive.org/web/20201111203134/https://support.shotgunsoftware.com/hc/en-us/articles/114094235653-Setting-global-environment-variables-on-Windows). on some systems you may need to restart for these changes to take effect.
+
+> :white_check_mark: to test, run `echo %pathext%` in CMD.exe and make sure `.JS` is not there
+
+3. open CMD.exe and type `python3 -m pip install -U demucs` (hit enter)
+
+### macOS steps:
+
+1. install homebrew: https://brew.sh/
+
+2. open terminal and install python3/demucs with the following commands:
+```
+brew install [email protected]
+brew link --force [email protected]
+python3 -m pip install -U demucs
+```
+
+## running
+
+1. unzip demucs.zip and add the `demucs/` folder to your Places menu in Ableton
+2. put `demucs.amxd` onto any audio channel
+3. select any audio clip in Ableton by clicking on it
+4. press the start button in the demucs device and wait.
+
+## troubleshooting and FAQs
+
+TBD
+
+## license (MIT)
+
+Copyright 2022 Yan Zhu
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of
+this software and associated documentation files (the "Software"), to deal in
+the Software without restriction, including without limitation the rights to
+use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
+of the Software, and to permit persons to whom the Software is furnished to do
+so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+
+## credits
+
+https://github.com/facebookresearch/demucs

demucs.amxd

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+const path = require('path')
+const Max = require('max-api')
+const { exec, execSync } = require('child_process')
+const done = () => {
+  Max.outlet('spleeterDone')
+}
+
+const modelName = 'mdx_extra_q'
+
+Max.post(`Loaded the ${path.basename(__filename)} script`)
+// Docker's default path may not be in Max Node's env path
+process.env.PATH = [process.env.PATH, '/usr/local/bin'].join(':')
+Max.outlet('bang')
+
+// Use the 'addHandler' function to register a function for a particular
+// message
+Max.addHandlers({
+  onFile: (filename) => {
+    if (!filename) {
+      Max.post('No audio file found.')
+      done()
+      return
+    }
+    runSpleeter(filename)
+  }
+})
+
+const showDir = (dir) => {
+  // Since LOM has no way to load these files automatically into new tracks,
+  // just open a file dialog and let the user drag-and-drop them.
+  let opener
+  if (process.platform === 'darwin') {
+    opener = 'open'
+  } else if (process.platform === 'win32') {
+    opener = 'start ""'
+  } else {
+    Max.post(`Unsupported platform: ${process.platform}`)
+  }
+  execSync(`${opener} "${dir}"`)
+  Max.outlet('set', `Select a clip; then press the button to start.`)
+}
+
+const runSpleeter = (filename) => {
+  const cmd = `demucs "${filename}"`
+  Max.outlet('set', `Demucs is running. This may take a minute...`)
+  Max.post(cmd)
+
+  // Calls the spleeter python process
+  exec(cmd, (err, stdout, stderr) => {
+    if (err) {
+      Max.outlet('set', `Error: ${err.message}`)
+      Max.post(`Error: ${err.message}`)
+      Max.post(`Spleeter stderr: ${stderr}`)
+      Max.post(`Spleeter stdout: ${stdout}`)
+      done()
+      return
+    }
+    if (stderr) {
+      Max.post(`Spleeter stderr: ${stderr}`)
+    }
+    if (stdout) {
+      Max.post(`Spleeter stdout: ${stdout}`)
+    }
+    const correctFilename = path.basename(filename).split('.').slice(0, -1).join('.')
+    const outputFilename = path.join(__dirname, 'separated', modelName, correctFilename)
+    showDir(outputFilename)
+    done()
+  })
+}

demucs.js

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+outlets = 2
+
+function log (msg, obj) {
+  post(msg)
+  post(JSON.stringify(obj))
+  post('\n')
+}
+
+function bang () {
+  const clip = new LiveAPI('live_set view detail_clip')
+  const filePath = clip.get('file_path')
+  outlet(0, 'onFile', filePath)
+}
+
+function spleeterDone() {
+  outlet(1, 'bang')
+}