Release reawarp: audio warping (beat detection, warp, tempo map, groove match, quantize) v1.0.5

Stretch Markers/GabrielSchuck_reawarp/actions/GabrielSchuck_reawarp - Add beat marker at edit cursor.lua

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+-- @noindex
+-- Generated by reawarp.lua. Do not edit: all the code is in reawarp.lua.
+REAWARP_ACTION = "add_beat"
+dofile(debug.getinfo(1, "S").source:match("^@?(.*[\\/])") .. "../../GabrielSchuck_reawarp.lua")

Stretch Markers/GabrielSchuck_reawarp/actions/GabrielSchuck_reawarp - Analyze beats.lua

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+-- @noindex
+-- Generated by reawarp.lua. Do not edit: all the code is in reawarp.lua.
+REAWARP_ACTION = "analyze"
+dofile(debug.getinfo(1, "S").source:match("^@?(.*[\\/])") .. "../../GabrielSchuck_reawarp.lua")

Stretch Markers/GabrielSchuck_reawarp/actions/GabrielSchuck_reawarp - Change song tempo.lua

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+-- @noindex
+-- Generated by reawarp.lua. Do not edit: all the code is in reawarp.lua.
+REAWARP_ACTION = "retempo"
+dofile(debug.getinfo(1, "S").source:match("^@?(.*[\\/])") .. "../../GabrielSchuck_reawarp.lua")

Stretch Markers/GabrielSchuck_reawarp/actions/GabrielSchuck_reawarp - Delete nearest beat marker.lua

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+-- @noindex
+-- Generated by reawarp.lua. Do not edit: all the code is in reawarp.lua.
+REAWARP_ACTION = "del_beat"
+dofile(debug.getinfo(1, "S").source:match("^@?(.*[\\/])") .. "../../GabrielSchuck_reawarp.lua")

Stretch Markers/GabrielSchuck_reawarp/actions/GabrielSchuck_reawarp - Double BPM.lua

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+-- @noindex
+-- Generated by reawarp.lua. Do not edit: all the code is in reawarp.lua.
+REAWARP_ACTION = "double"
+dofile(debug.getinfo(1, "S").source:match("^@?(.*[\\/])") .. "../../GabrielSchuck_reawarp.lua")

Stretch Markers/GabrielSchuck_reawarp/actions/GabrielSchuck_reawarp - Fixed project tempo from item.lua

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+-- @noindex
+-- Generated by reawarp.lua. Do not edit: all the code is in reawarp.lua.
+REAWARP_ACTION = "bpm"
+dofile(debug.getinfo(1, "S").source:match("^@?(.*[\\/])") .. "../../GabrielSchuck_reawarp.lua")

Stretch Markers/GabrielSchuck_reawarp/actions/GabrielSchuck_reawarp - Halve BPM.lua

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+-- @noindex
+-- Generated by reawarp.lua. Do not edit: all the code is in reawarp.lua.
+REAWARP_ACTION = "halve"
+dofile(debug.getinfo(1, "S").source:match("^@?(.*[\\/])") .. "../../GabrielSchuck_reawarp.lua")

Stretch Markers/GabrielSchuck_reawarp/actions/GabrielSchuck_reawarp - Match groove to first item.lua

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+-- @noindex
+-- Generated by reawarp.lua. Do not edit: all the code is in reawarp.lua.
+REAWARP_ACTION = "match"
+dofile(debug.getinfo(1, "S").source:match("^@?(.*[\\/])") .. "../../GabrielSchuck_reawarp.lua")

Stretch Markers/GabrielSchuck_reawarp/actions/GabrielSchuck_reawarp - Move beat markers left by grid.lua

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+-- @noindex
+-- Generated by reawarp.lua. Do not edit: all the code is in reawarp.lua.
+REAWARP_ACTION = "nudge_left"
+dofile(debug.getinfo(1, "S").source:match("^@?(.*[\\/])") .. "../../GabrielSchuck_reawarp.lua")

Stretch Markers/GabrielSchuck_reawarp/actions/GabrielSchuck_reawarp - Move beat markers right by grid.lua

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+-- @noindex
+-- Generated by reawarp.lua. Do not edit: all the code is in reawarp.lua.
+REAWARP_ACTION = "nudge_right"
+dofile(debug.getinfo(1, "S").source:match("^@?(.*[\\/])") .. "../../GabrielSchuck_reawarp.lua")

Stretch Markers/GabrielSchuck_reawarp/actions/GabrielSchuck_reawarp - Move nearest beat marker to edit cursor.lua

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+-- @noindex
+-- Generated by reawarp.lua. Do not edit: all the code is in reawarp.lua.
+REAWARP_ACTION = "move_beat"
+dofile(debug.getinfo(1, "S").source:match("^@?(.*[\\/])") .. "../../GabrielSchuck_reawarp.lua")

Stretch Markers/GabrielSchuck_reawarp/actions/GabrielSchuck_reawarp - Next beat marker.lua

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+-- @noindex
+-- Generated by reawarp.lua. Do not edit: all the code is in reawarp.lua.
+REAWARP_ACTION = "next_beat"
+dofile(debug.getinfo(1, "S").source:match("^@?(.*[\\/])") .. "../../GabrielSchuck_reawarp.lua")

Stretch Markers/GabrielSchuck_reawarp/actions/GabrielSchuck_reawarp - Previous beat marker.lua

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+-- @noindex
+-- Generated by reawarp.lua. Do not edit: all the code is in reawarp.lua.
+REAWARP_ACTION = "prev_beat"
+dofile(debug.getinfo(1, "S").source:match("^@?(.*[\\/])") .. "../../GabrielSchuck_reawarp.lua")

Stretch Markers/GabrielSchuck_reawarp/actions/GabrielSchuck_reawarp - Quantize settings.lua

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+-- @noindex
+-- Generated by reawarp.lua. Do not edit: all the code is in reawarp.lua.
+REAWARP_ACTION = "qsettings"
+dofile(debug.getinfo(1, "S").source:match("^@?(.*[\\/])") .. "../../GabrielSchuck_reawarp.lua")

Stretch Markers/GabrielSchuck_reawarp/actions/GabrielSchuck_reawarp - Quantize to MIDI item.lua

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+-- @noindex
+-- Generated by reawarp.lua. Do not edit: all the code is in reawarp.lua.
+REAWARP_ACTION = "quantize"
+dofile(debug.getinfo(1, "S").source:match("^@?(.*[\\/])") .. "../../GabrielSchuck_reawarp.lua")

Stretch Markers/GabrielSchuck_reawarp/actions/GabrielSchuck_reawarp - Restore original items.lua

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+-- @noindex
+-- Generated by reawarp.lua. Do not edit: all the code is in reawarp.lua.
+REAWARP_ACTION = "restore"
+dofile(debug.getinfo(1, "S").source:match("^@?(.*[\\/])") .. "../../GabrielSchuck_reawarp.lua")

Stretch Markers/GabrielSchuck_reawarp/actions/GabrielSchuck_reawarp - Set downbeat at edit cursor.lua

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+-- @noindex
+-- Generated by reawarp.lua. Do not edit: all the code is in reawarp.lua.
+REAWARP_ACTION = "downbeat"
+dofile(debug.getinfo(1, "S").source:match("^@?(.*[\\/])") .. "../../GabrielSchuck_reawarp.lua")

Stretch Markers/GabrielSchuck_reawarp/actions/GabrielSchuck_reawarp - Settings.lua

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+-- @noindex
+-- Generated by reawarp.lua. Do not edit: all the code is in reawarp.lua.
+REAWARP_ACTION = "settings"
+dofile(debug.getinfo(1, "S").source:match("^@?(.*[\\/])") .. "../../GabrielSchuck_reawarp.lua")

Stretch Markers/GabrielSchuck_reawarp/actions/GabrielSchuck_reawarp - Shift beats by half a beat.lua

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+-- @noindex
+-- Generated by reawarp.lua. Do not edit: all the code is in reawarp.lua.
+REAWARP_ACTION = "shift"
+dofile(debug.getinfo(1, "S").source:match("^@?(.*[\\/])") .. "../../GabrielSchuck_reawarp.lua")

Stretch Markers/GabrielSchuck_reawarp/actions/GabrielSchuck_reawarp - Tempo map from item.lua

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+-- @noindex
+-- Generated by reawarp.lua. Do not edit: all the code is in reawarp.lua.
+REAWARP_ACTION = "tempo"
+dofile(debug.getinfo(1, "S").source:match("^@?(.*[\\/])") .. "../../GabrielSchuck_reawarp.lua")

Stretch Markers/GabrielSchuck_reawarp/actions/GabrielSchuck_reawarp - Warp item to project tempo.lua

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+-- @noindex
+-- Generated by reawarp.lua. Do not edit: all the code is in reawarp.lua.
+REAWARP_ACTION = "warp"
+dofile(debug.getinfo(1, "S").source:match("^@?(.*[\\/])") .. "../../GabrielSchuck_reawarp.lua")

Stretch Markers/GabrielSchuck_reawarp/backend/install_beat_this.bat

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+@echo off
+rem reawarp - installs the Beat This! beat detector in this folder.
+rem No Python installation is needed: uv downloads a private Python here.
+rem Copyright (C) 2026 Gabriel Schuck. GPL-3.0-or-later (see LICENSE).
+rem Arguments: [gpu^|cpu] [auto]
+rem   gpu: PyTorch for NVIDIA graphics cards (about 2.5 GB); cpu: about 300 MB.
+rem   Without one it keeps the kind already installed (cpu on a new install).
+rem   auto: started by reawarp. The window closes at the end and reawarp shows the
+rem   result (install_status.txt: "ok <device>" or "fail"). The details of every
+rem   step go to install.log.
+setlocal
+set "KIND=%~1"
+set "AUTO=%~2"
+if /i "%KIND%"=="auto" (set "KIND=" & set "AUTO=auto")
+cd /d "%~dp0"
+set "LOG=%CD%\install.log"
+set "STATUS=%CD%\install_status.txt"
+if exist "%STATUS%" del "%STATUS%"
+echo reawarp: Beat This! installation> "%LOG%"
+call :say reawarp: installing the Beat This! beat detector.
+call :say This downloads about 350 MB and needs about 1 GB of disk space
+call :say (the version for NVIDIA graphics cards: about 2.5 GB, and 3 GB of disk).
+call :say Everything goes inside this folder; no Python installation is needed.
+if /i "%AUTO%"=="auto" call :say This window closes by itself when the installation ends.
+echo.
+
+set "UV_VERSION=0.12.20"
+set "UV_TARGET=x86_64-pc-windows-msvc"
+if /i "%PROCESSOR_ARCHITECTURE%"=="ARM64" set "UV_TARGET=aarch64-pc-windows-msvc"
+set "UV=%CD%\uv\uv.exe"
+rem keep uv's Python, cache and tools inside this folder, and never use a system Python
+set "UV_PYTHON_INSTALL_DIR=%CD%\python"
+set "UV_CACHE_DIR=%CD%\uvcache"
+set "UV_PYTHON_PREFERENCE=only-managed"
+set "UV_NO_CONFIG=1"
+rem Windows' own tar (it opens .zip files; another tar on the PATH may not)
+set "TAR=tar"
+if exist "%SystemRoot%\System32\tar.exe" set "TAR=%SystemRoot%\System32\tar.exe"
+
+if not exist "%UV%" (
+  call :say Downloading uv %UV_VERSION%...
+  if not exist uv mkdir uv
+  curl -L --fail -sS -o "uv\uv.zip" "https://github.com/astral-sh/uv/releases/download/%UV_VERSION%/uv-%UV_TARGET%.zip" >> "%LOG%" 2>&1 || goto fail
+  "%TAR%" -xf "uv\uv.zip" -C uv >> "%LOG%" 2>&1 || goto fail
+  del "uv\uv.zip"
+)
+if not exist "%UV%" goto fail
+
+rem --allow-existing keeps the installed packages and repairs an env whose folder was moved
+call :say Installing Python...
+"%UV%" venv env --python 3.12 --allow-existing >> "%LOG%" 2>&1 || goto fail
+rem the PyTorch build installed now: cpu, a CUDA version, or none
+set "CUR="
+for /f "delims=" %%v in ('env\Scripts\python.exe -c "import torch; print(torch.version.cuda or 0)" 2^>nul') do set "CUR=%%v"
+if "%CUR%"=="0" set "CUR=cpu"
+if not defined KIND (
+  set "KIND=cpu"
+  if defined CUR if /i not "%CUR%"=="cpu" set "KIND=keep"
+)
+set "INDEX=cpu"
+if /i "%KIND%"=="gpu" call :cuda_index
+set "REINSTALL="
+if /i "%KIND%"=="keep" goto torch_install
+if /i "%INDEX%"=="cpu" (
+  if defined CUR if /i not "%CUR%"=="cpu" set "REINSTALL=--reinstall-package torch --reinstall-package torchaudio"
+) else (
+  if /i "%CUR%"=="cpu" set "REINSTALL=--reinstall-package torch --reinstall-package torchaudio"
+)
+:torch_install
+if /i "%KIND%"=="keep" (
+  call :say PyTorch for the GPU is already installed.
+) else (
+  if /i "%INDEX%"=="cpu" (call :say Installing PyTorch for the CPU...) else (call :say Installing PyTorch for the NVIDIA GPU [%INDEX%], about 2.5 GB. This takes a while...)
+  "%UV%" pip install --python "env\Scripts\python.exe" torch torchaudio --index-url https://download.pytorch.org/whl/%INDEX% %REINSTALL% >> "%LOG%" 2>&1 || goto fail
+)
+call :say Installing Beat This!...
+"%UV%" pip install --python "env\Scripts\python.exe" beat-this==1.1.0 >> "%LOG%" 2>&1 || goto fail
+call :say Downloading the model...
+"env\Scripts\python.exe" reawarp_beat_this.py --download >> "%LOG%" 2>&1 || goto fail
+set "DEVICE=cpu"
+for /f "delims=" %%d in ('env\Scripts\python.exe reawarp_beat_this.py --device 2^>nul') do set "DEVICE=%%d"
+if exist uvcache rmdir /s /q uvcache
+call :say Done. Beat This! runs on: %DEVICE%.
+echo ok %DEVICE%> "%STATUS%"
+rem started by reawarp (cmd /k): "exit" closes the window too
+if /i "%AUTO%"=="auto" exit 0
+echo.
+pause
+exit /b 0
+
+:say
+rem a progress line, on the screen and in the log
+echo %*
+>> "%LOG%" echo %*
+goto :eof
+
+:cuda_index
+rem the newest CUDA build that the NVIDIA driver supports
+set "DRV="
+for /f "tokens=1 delims=." %%a in ('nvidia-smi --query-gpu^=driver_version --format^=csv^,noheader 2^>nul') do if not defined DRV set "DRV=%%a"
+if not defined DRV (
+  call :say No NVIDIA graphics card found: installing the CPU version.
+  goto :eof
+)
+if %DRV% GEQ 580 (set "INDEX=cu130" & goto :eof)
+if %DRV% GEQ 570 (set "INDEX=cu128" & goto :eof)
+if %DRV% GEQ 560 (set "INDEX=cu126" & goto :eof)
+call :say The NVIDIA driver is too old for the GPU version: installing the CPU version.
+goto :eof
+
+:fail
+rem (the download cache stays, so a retry does not download everything again)
+call :say The installation failed. It needs an internet connection; you can run it again to retry.
+echo fail> "%STATUS%"
+if /i "%AUTO%"=="auto" exit 1
+echo.
+echo Details:
+type "%LOG%"
+echo.
+pause
+exit /b 1

Stretch Markers/GabrielSchuck_reawarp/backend/install_beat_this.sh

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+#!/bin/sh
+# reawarp - installs the Beat This! beat detector in this folder.
+# No Python installation is needed: uv downloads a private Python here.
+# Copyright (C) 2026 Gabriel Schuck. GPL-3.0-or-later (see LICENSE).
+# Arguments: [gpu|cpu] [auto]
+#   gpu: PyTorch for NVIDIA graphics cards (Linux, about 2.5 GB); cpu: about 300 MB.
+#   Without one it keeps the kind already installed (cpu on a new install).
+#   On macOS the standard build is used: it also runs on the GPU of Apple silicon.
+#   auto: started by reawarp. The window closes at the end and reawarp shows the
+#   result (install_status.txt: "ok <device>" or "fail"). The details of every
+#   step go to install.log.
+cd "$(dirname "$0")" || exit 1
+HERE=$(pwd)
+# macOS Terminal cannot pass arguments to a script: reawarp leaves them here
+if [ $# -eq 0 ] && [ -f "$HERE/install_args.txt" ]; then
+  # shellcheck disable=SC2046
+  set -- $(cat "$HERE/install_args.txt")
+  rm -f "$HERE/install_args.txt"
+fi
+KIND="${1:-}"
+AUTO="${2:-}"
+if [ "$KIND" = auto ]; then KIND=""; AUTO=auto; fi
+LOG="$HERE/install.log"
+STATUS="$HERE/install_status.txt"
+rm -f "$STATUS"
+echo "reawarp: Beat This! installation" > "$LOG"
+
+say() { # a progress line, on the screen and in the log
+  echo "$*"
+  echo "$*" >> "$LOG"
+}
+
+finish() {
+  # nothing here writable by everyone (folders synced to the cloud, as with
+  # MEGA, refuse 777): 775 for folders, 664 for files
+  chmod -R o-w "$HERE" 2>/dev/null
+  if [ "$AUTO" != auto ]; then
+    if [ "$1" != 0 ]; then echo; echo "Details:"; cat "$LOG"; fi
+    echo
+    printf 'Press Enter to close. '
+    read -r _
+  fi
+  exit "$1"
+}
+
+say "reawarp: installing the Beat This! beat detector."
+say "This downloads about 350 MB and needs about 1 GB of disk space"
+say "(the version for NVIDIA graphics cards: about 2.5 GB, and 3 GB of disk)."
+say "Everything goes inside this folder; no Python installation is needed."
+if [ "$AUTO" = auto ]; then say "This window closes by itself when the installation ends."; fi
+echo
+
+UV_VERSION=0.12.20
+case "$(uname -s)-$(uname -m)" in
+  Darwin-arm64) TARGET=aarch64-apple-darwin ;;
+  Darwin-x86_64) TARGET=x86_64-apple-darwin ;;
+  Linux-x86_64) TARGET=x86_64-unknown-linux-gnu ;;
+  Linux-aarch64 | Linux-arm64) TARGET=aarch64-unknown-linux-gnu ;;
+  *) say "Unsupported system: $(uname -s) $(uname -m)"; echo fail > "$STATUS"; finish 1 ;;
+esac
+# keep uv's Python, cache and tools inside this folder, and never use a system Python
+export UV_PYTHON_INSTALL_DIR="$HERE/python"
+export UV_CACHE_DIR="$HERE/uvcache"
+export UV_PYTHON_PREFERENCE=only-managed
+export UV_NO_CONFIG=1
+UV="$HERE/uv/uv"
+
+set -e
+# (the download cache stays after a failure, so a retry does not download everything again)
+trap 'say "The installation failed. It needs an internet connection; you can run it again to retry."; echo fail > "$STATUS"; finish 1' EXIT
+if [ ! -x "$UV" ]; then
+  say "Downloading uv $UV_VERSION..."
+  mkdir -p uv
+  URL="https://github.com/astral-sh/uv/releases/download/$UV_VERSION/uv-$TARGET.tar.gz"
+  if command -v curl >/dev/null 2>&1; then curl -L --fail -sS -o uv/uv.tar.gz "$URL" >> "$LOG" 2>&1
+  else wget -q -O uv/uv.tar.gz "$URL" >> "$LOG" 2>&1; fi
+  tar -xzf uv/uv.tar.gz -C uv --strip-components=1 >> "$LOG" 2>&1
+  rm uv/uv.tar.gz
+fi
+# --allow-existing keeps the installed packages and repairs an env whose folder was moved
+say "Installing Python..."
+"$UV" venv env --python 3.12 --allow-existing >> "$LOG" 2>&1
+if [ "$(uname -s)" = "Darwin" ]; then
+  say "Installing PyTorch..."
+  "$UV" pip install --python env/bin/python torch torchaudio >> "$LOG" 2>&1
+else
+  CUR=$(env/bin/python -c "import torch; print(torch.version.cuda or 'cpu')" 2>/dev/null || true)
+  if [ -z "$KIND" ]; then
+    if [ -n "$CUR" ] && [ "$CUR" != cpu ]; then KIND=keep; else KIND=cpu; fi
+  fi
+  INDEX=cpu
+  if [ "$KIND" = gpu ]; then
+    # the newest CUDA build that the NVIDIA driver supports
+    DRV=$(nvidia-smi --query-gpu=driver_version --format=csv,noheader 2>/dev/null | head -n 1 | cut -d. -f1 || true)
+    case "$DRV" in
+      '' | *[!0-9]*) say "No NVIDIA graphics card found: installing the CPU version." ;;
+      *) if [ "$DRV" -ge 580 ]; then INDEX=cu130
+         elif [ "$DRV" -ge 570 ]; then INDEX=cu128
+         elif [ "$DRV" -ge 560 ]; then INDEX=cu126
+         else say "The NVIDIA driver is too old for the GPU version: installing the CPU version."
+         fi ;;
+    esac
+  fi
+  if [ "$KIND" = keep ]; then
+    say "PyTorch for the GPU is already installed."
+  else
+    REINSTALL=""
+    if [ "$INDEX" = cpu ] && [ -n "$CUR" ] && [ "$CUR" != cpu ]; then REINSTALL="--reinstall-package torch --reinstall-package torchaudio"; fi
+    if [ "$INDEX" != cpu ] && [ "$CUR" = cpu ]; then REINSTALL="--reinstall-package torch --reinstall-package torchaudio"; fi
+    if [ "$INDEX" = cpu ]; then say "Installing PyTorch for the CPU..."
+    else say "Installing PyTorch for the NVIDIA GPU ($INDEX), about 2.5 GB. This takes a while..."; fi
+    # shellcheck disable=SC2086
+    "$UV" pip install --python env/bin/python torch torchaudio --index-url "https://download.pytorch.org/whl/$INDEX" $REINSTALL >> "$LOG" 2>&1
+  fi
+fi
+say "Installing Beat This!..."
+"$UV" pip install --python env/bin/python beat-this==1.1.0 >> "$LOG" 2>&1
+say "Downloading the model..."
+env/bin/python reawarp_beat_this.py --download >> "$LOG" 2>&1
+DEVICE=$(env/bin/python reawarp_beat_this.py --device 2>/dev/null || echo cpu)
+rm -rf uvcache
+trap - EXIT
+say "Done. Beat This! runs on: $DEVICE."
+echo "ok $DEVICE" > "$STATUS"
+finish 0