initial commit

.gitignore

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+*~
+.DS_Store
+*.pkg.tar.zst
+*.pkg.tar.zst.sig

PKGBUILD

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+# Maintainer: Sebastian Hugentobler <shu@vanwa.ch>
+
+pkgname=aax-tools
+pkgver=0.1.0
+pkgrel=2
+pkgdesc="Ffmpeg incantations to get something useful from aax files."
+arch=("any")
+url="https://code.vanwa.ch"
+license=('MIT')
+depends=("ffmpeg")
+source=(
+  "aax-to-chapter"
+  "aax-to-m4a"
+)
+sha256sums=("ff999cb350c5587824e2d513969f1d87e8879b8892716082ea9108a7347fc50a" "74018431b8838944e41afe9144cca79917ff834b0c2e100a6f9ef28c52fdf45c")
+
+package() {
+  cd "$srcdir/"
+
+  install -Dm 755 aax-to-chapter "$pkgdir/usr/bin/aax-to-chapter"
+  install -Dm 755 aax-to-m4a "$pkgdir/usr/bin/aax-to-m4a"
+}

aax-to-chapter

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+#!/usr/bin/env bash
+set -e
+
+input="$1"
+EXT2="m4a"
+
+if [ -z "$AAX_ACTIVATION_BYTES" ]; then
+  echo "set AAX_ACTIVATION_BYTES env var"
+  exit 1
+fi
+
+json=$(ffprobe -activation_bytes "$AAX_ACTIVATION_BYTES" -i "$input" -loglevel error -print_format json -show_format -show_chapters)
+title=$(echo $json | jq -r ".format.tags.title")
+count=$(echo $json | jq ".chapters | length")
+target=$(echo $json | jq -r ".format.tags | .date + \" \" + .artist + \" - \" + .title")
+mkdir "$target"
+
+for i in $(seq -w 1 $count); do
+  j=$((10#$i))
+  n=$(($j - 1))
+  start=$(echo $json | jq -r ".chapters[$n].start_time")
+  end=$(echo $json | jq -r ".chapters[$n].end_time")
+  name=$(echo $json | jq -r ".chapters[$n].tags.title")
+  ffmpeg -activation_bytes "$AAX_ACTIVATION_BYTES" -i $input -ss $start -to $end -metadata title="$title $name" -vn -c:a copy "$target/$i $name.$EXT2"
+done

aax-to-m4a

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+#!/usr/bin/env sh
+set -e
+
+input="$1"
+output="$2"
+EXT="m4a"
+
+if [ -z "$AAX_ACTIVATION_BYTES" ]; then
+  echo "set AAX_ACTIVATION_BYTES env var"
+  exit 1
+fi
+
+ffmpeg -activation_bytes "$AAX_ACTIVATION_BYTES" -threads 0 -i "$input" -vn "$output.$EXT"