Initial auCDtect Linux implementation

tools/eval_dataset.sh

@@ -0,0 +1,53 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+if [[ $# -lt 1 || $# -gt 2 ]]; then
+  echo "Usage: $0 <samples-root> [output.csv]" >&2
+  exit 1
+fi
+
+samples_root=$1
+output_csv=${2:-dataset_eval.csv}
+
+if [[ ! -d "$samples_root" ]]; then
+  echo "Samples directory not found: $samples_root" >&2
+  exit 1
+fi
+
+if [[ ! -x build/aucdtect ]]; then
+  echo "CLI binary missing: build/aucdtect" >&2
+  echo "Build the project first with: cmake --build build" >&2
+  exit 1
+fi
+
+if ! command -v ffmpeg >/dev/null 2>&1; then
+  echo "ffmpeg is required for dataset evaluation" >&2
+  exit 1
+fi
+
+tmp_root=$(mktemp -d)
+trap 'rm -rf "$tmp_root"' EXIT
+
+echo "label,source_file,file,ok,conclusion,accuracy,confidence,sample_rate,channels,bits_per_sample,sample_frames,cutoff_khz,rolloff_khz,lo_cut_hz,hi_cut_hz,lo_boundary_hz,hi_boundary_hz,probable_boundary_hz,phase_nonlinearity,first_order_smoothness,second_order_smoothness,high_band_ratio,very_high_band_ratio,spectral_flatness,analyzed_windows,informative_windows,suspect_windows,genuine_windows,suspect_ratio,error" > "$output_csv"
+
+while IFS= read -r -d '' source_file; do
+  rel_path=${source_file#"$samples_root"/}
+  label=${rel_path%%/*}
+  if [[ "$label" == "$rel_path" ]]; then
+    label=unlabeled
+  fi
+
+  ext=${source_file##*.}
+  ext_lower=$(printf '%s' "$ext" | tr '[:upper:]' '[:lower:]')
+  analysis_file=$source_file
+
+  if [[ "$ext_lower" != "wav" ]]; then
+    analysis_file="$tmp_root/$(basename "${source_file%.*}").wav"
+    ffmpeg -loglevel error -y -i "$source_file" -ar 44100 -ac 2 -c:a pcm_s16le "$analysis_file" </dev/null
+  fi
+
+  row=$(build/aucdtect --dump-features "$analysis_file" </dev/null | tail -n +2)
+  printf '"%s","%s",%s\n' "$label" "$source_file" "$row" >> "$output_csv"
+done < <(find "$samples_root" -type f \( -iname '*.wav' -o -iname '*.flac' -o -iname '*.mp3' -o -iname '*.aac' -o -iname '*.m4a' -o -iname '*.ape' -o -iname '*.wv' -o -iname '*.tta' -o -iname '*.tak' \) -print0 | sort -z)
+
+echo "Saved dataset report to $output_csv"