Separate stems

import soundpiece

stems = soundpiece.run("adapt.separate_stems", {
    "source": {"url": "https://example.com/audio/song.mp3"},
})

for stem in stems["outputs"]:
    soundpiece.download(stem["url"], f"{stem['kind']}.flac")
    print(f"Saved {stem['kind']}.flac")

import { run, download } from "./soundpiece.mjs";

const stems = await run("adapt.separate_stems", {
  source: { url: "https://example.com/audio/song.mp3" },
});

for (const stem of stems.outputs) {
  await download(stem.url, `${stem.kind}.flac`);
  console.log(`Saved ${stem.kind}.flac`);
}

#!/usr/bin/env bash
# Submit, wait and download by hand. Needs curl, jq and uuidgen.
set -euo pipefail
API=https://api.soundpiece.co/v1
AUTH="Authorization: Bearer $SOUNDPIECE_API_KEY"

# 1. Submit. Sending this exact body again (same idempotency_key) is safe.
body=$(jq -n --arg key "$(uuidgen)" '{
  idempotency_key: $key,
  source: { url: "https://example.com/audio/song.mp3" }
}')
response=$(curl --silent --show-error --max-time 30 --request PUT "$API/adapt.separate_stems" \
  --header "$AUTH" --header "Content-Type: application/json" --data "$body")
result=$(jq -e .stems <<<"$response") || { echo "$response"; exit 1; }
id=$(jq -r .id <<<"$result")

# 2. Wait. Each call returns as soon as the work is finished, or after 20 seconds.
while [ "$(jq -r .status <<<"$result")" = processing ]; do
  response=$(curl --silent --show-error --max-time 30 "$API/adapt.separate_stems?id=$id&wait=true" \
    --header "$AUTH")
  result=$(jq -e .stems <<<"$response") || { echo "$response"; exit 1; }
done

# 3. Download each stem, or show what went wrong.
if [ "$(jq -r .status <<<"$result")" = failed ]; then
  jq .error <<<"$result"
  exit 1
fi
jq -r '.outputs[] | "\(.kind) \(.url)"' <<<"$result" | while read -r kind url; do
  curl --silent --show-error --fail --output "$kind.flac" "$url"
  echo "Saved $kind.flac"
done