added tool to fix deprecated id3 tags in flacs

compare_flac_opus

@@ -0,0 +1,9 @@
+#!/usr/bin/env bash
+flac_dir="${HOME}/flac"
+opus_dir="${HOME}/opus"
+#
+printf 'flacs: %s\n' "$(find "$flac_dir" -name '*.flac' -type f | wc -l)"
+printf 'opuses: %s\n' "$(find "$opus_dir" -name '*.opus' -type f | wc -l)"
+# find "$opus_dir" -name '*.opus' -type f | sed -e "s,$opus_dir,$flac_dir," -e 's_\.opus$_\.flac_' | sort -V
+printf 'diff:\n'
+diff --suppress-common-lines -y <(find "$flac_dir" -name '*.flac' -type f | sort -V) <(find "$opus_dir" -name '*.opus' -type f | sed -e "s,$opus_dir,$flac_dir," -e 's_\.opus$_\.flac_' | sort -V)

encode_all

@@ -5,6 +5,7 @@
 
 src_library="${HOME}/flac"
 output_dir="${HOME}/opus"
+log="${HOME}/encode_log_$(date '+%Y-%m-%d_%H:%M')"
 
 function encode() {
   file="$1"
@@ -14,6 +15,9 @@ function encode() {
   file_name="$(basename "$file")"
   final_dir="$(sed "s_${HOME}/flac_${HOME}/opus_" <<< "$src_dir")"
   final_opus="$(sed -e 's/\.flac$/.opus/' -e "s_${HOME}/flac_${HOME}/opus_" <<< "$file")"
+  if [[ -f "$final_opus" ]]; then
+    return
+  fi
   unset tags
   unset dest_dir
 
@@ -39,17 +43,19 @@ function encode() {
 
   [[ -d "$final_dir" ]] || mkdir -p "$final_dir"
   if [[ -n "${tags[DISK]}" ]]; then
-    opusenc \
+    err="$(opusenc --quiet \
          --title "${tags[TITLE]}" --artist "${tags[ARTIST]}" \
          --album "${tags[ALBUM]}" --tracknumber "${tags[TRACKNUMBER]}" \
-         --date "${tags[DATE]}" --comment "DISK=${tags[DISK]}" "$file" "$final_opus"
+         --date "${tags[DATE]}" --comment "DISK=${tags[DISK]}" "$file" "$final_opus" 2>&1)"
   else
-    opusenc \
+    err="$(opusenc --quiet \
          --title "${tags[TITLE]}" --artist "${tags[ARTIST]}" \
          --album "${tags[ALBUM]}" --tracknumber "${tags[TRACKNUMBER]}" \
-         --date "${tags[DATE]}" "$file" "$final_opus"
+         --date "${tags[DATE]}" "$file" "$final_opus" 2>&1)"
+  fi
+  if [[ -n "$err" ]]; then
+    printf '%s\n' "$err" >> "$log"
   fi
-
 }
 
 time find "$src_library" -type f -name '*.flac' -print0 | env_parallel -P 0 -0 --bar encode {}

flac_update_id3

@@ -0,0 +1,107 @@
+#!/usr/bin/env python3
+
+import logging
+import os
+import pathlib
+import pprint
+import re
+import shutil
+import subprocess
+import sys
+import tempfile
+
+
+comment_re = re.compile('    comment\[[0-9]+\]: (?P<tag_name>[^=]+)=(?P<tag>.*)')
+
+
+def run(cmd):
+    p = subprocess.run(cmd, capture_output=True)
+    return (p.stdout.decode('UTF-8'), p.stderr.decode('UTF-8'), p.returncode)
+
+
+def get_tags(filename):
+    tags = {}
+    cmd = ('/usr/bin/metaflac', '--list', '--block-type=VORBIS_COMMENT', filename)
+    stdout, stderr, exit_code = run(cmd)
+    stdout = stdout.split('\n')
+    logging.debug(f'stdout: {stdout}')
+    logging.debug(f'stderr: {stderr}')
+    logging.debug(f'exit: {exit_code}')
+    if exit_code != 0:
+        sys.exit(stderr)
+    for line in stdout:
+        match = comment_re.search(line)
+        if match:
+            tags[match.group('tag_name')] = match.group('tag')
+    return tags
+
+
+def writable(filename):
+    return os.access(filename, os.R_OK)
+
+
+def ffmpeg_encode(input_file, output_file):
+    cmd = ('/usr/bin/ffmpeg', '-loglevel', 'error', '-i', input_file, output_file)
+    stdout, stderr, exit_code = run(cmd)
+    if exit_code != 0:
+        logging.fatal(stderr)
+
+
+def write_flac(input_wav, tags, output_flac):
+    cmd = ['/usr/bin/flac', '-f', '-s', '--best']
+    tags = [f'{tag_type}={tag}' for tag_type, tag in tags.items()]
+    logging.debug(tags)
+    for tag in tags:
+        cmd.append('-T')
+        cmd.append(tag)
+    cmd.append(input_wav)
+    cmd.append('-o')
+    cmd.append(output_flac)
+    _, stderr, exit_code = run(cmd)
+    if exit_code != 0:
+        sys.exit(stderr)
+
+
+def replace_original(new, old):
+    try:
+        os.rename(new, old)
+    except:
+        logging.error(f'Failed to replace {old} with {new}.')
+        pprint.pprint(get_tags(old))
+        sys.exit(1)
+
+def main():
+    logging.basicConfig(encoding='utf-8', level=logging.DEBUG)
+    if len(sys.argv) != 2:
+        sys.exit('Give a flac with id3 tags.')
+
+    full_flac = pathlib.Path(sys.argv[1]).resolve()
+
+    if not writable(full_flac):
+        sys.exit(f'{full_flac} is not writable.')
+
+    stem = full_flac.stem
+    file = full_flac.name
+    path = full_flac.parent
+
+    logging.debug(f'stem: {stem}')
+    logging.debug(f'file: {file}')
+    logging.debug(f'path: {path}')
+    tags = get_tags(full_flac)
+
+    with tempfile.TemporaryDirectory(dir='/dev/shm') as working_dir:
+        with tempfile.NamedTemporaryFile(dir=path, delete=False) as temp_flac:
+            full_wav = working_dir / pathlib.Path(stem + '.wav')
+
+            ffmpeg_encode(full_flac, full_wav)
+            write_flac(full_wav.as_posix(), tags, temp_flac.name)
+            cmd = ('/usr/bin/flac', '-t', temp_flac.name)
+            stdout, stderr, exit_code = run(cmd)
+            print(f'stdout: {stdout}')
+            print(f'stderr: {stderr}')
+            print(f'exit code: {exit_code}')
+            pprint.pprint(get_tags(temp_flac.name))
+            replace_original(temp_flac.name, full_flac)
+
+if __name__ == '__main__':
+    main()

update_all_id3

@@ -0,0 +1,18 @@
+#!/usr/bin/env bash
+
+log_file="$1"
+
+if [[ -z "$log_file" ]]; then
+  printf 'give a log file from encode_all\n' >&2
+  exit 1
+fi
+if [[ ! -r "$log_file" ]]; then
+  printf '%s isnt a readable log file.\n' "$log_file" >&2
+  exit 1
+fi
+
+time while read line; do
+  file="/$(cut -d/ -f2- <<< "$line")"
+  printf '%s\n' "$file"
+
+done < "$log_file" | parallel -P 0 --bar ./flac_update_id3 {}