Ruffification and fixed bug

docs/source/conf.py

@@ -15,15 +15,16 @@
 # import importlib
 import os
 import sys
-sys.path.insert(0, os.path.abspath('../../src'))
+
+sys.path.insert(0, os.path.abspath("../../src"))
 sys.path.insert(0, os.path.abspath("../../../src"))
 print(sys.path)
 
 # -- Project information -----------------------------------------------------
 
-project = u'wavinfo'
-copyright = u'2018-2025, Jamie Hardt'
-author = u'Jamie Hardt'
+project = "wavinfo"
+copyright = "2018-2025, Jamie Hardt"
+author = "Jamie Hardt"
 
 # The short X.Y version
 version = "4.0"
@@ -42,34 +43,34 @@ release = "4.0.0"
 # extensions coming with Sphinx (named 'sphinx.ext.*') or your custom
 # ones.
 extensions = [
-    'sphinx.ext.autodoc',
-    'sphinx.ext.todo',
-    'sphinx.ext.coverage',
+    "sphinx.ext.autodoc",
+    "sphinx.ext.todo",
+    "sphinx.ext.coverage",
 ]
 
 # Add any paths that contain templates here, relative to this directory.
-templates_path = ['_templates']
+templates_path = ["_templates"]
 
 # The suffix(es) of source filenames.
 # You can specify multiple suffix as a list of string:
 #
 # source_suffix = ['.rst', '.md']
-source_suffix = '.rst'
+source_suffix = ".rst"
 
 # The master toctree document.
-master_doc = 'index'
+master_doc = "index"
 
 # The language for content autogenerated by Sphinx. Refer to documentation
 # for a list of supported languages.
 #
 # This is also used if you do content translation via gettext catalogs.
 # Usually you set "language" from the command line for these cases.
-language = 'en'
+language = "en"
 
 # List of patterns, relative to source directory, that match files and
 # directories to ignore when looking for source files.
 # This pattern also affects html_static_path and html_extra_path.
-exclude_patterns = [u'_build', 'Thumbs.db', '.DS_Store']
+exclude_patterns = ["_build", "Thumbs.db", ".DS_Store"]
 
 # The name of the Pygments (syntax highlighting) style to use.
 pygments_style = None
@@ -80,7 +81,7 @@ pygments_style = None
 # The theme to use for HTML and HTML Help pages.  See the documentation for
 # a list of builtin themes.
 #
-html_theme = 'sphinx_rtd_theme'
+html_theme = "sphinx_rtd_theme"
 
 # Theme options are theme-specific and customize the look and feel of a theme
 # further.  For a list of options available for each theme, see the
@@ -91,7 +92,7 @@ html_theme = 'sphinx_rtd_theme'
 # Add any paths that contain custom static files (such as style sheets) here,
 # relative to this directory. They are copied after the builtin static files,
 # so a file named "default.css" will overwrite the builtin "default.css".
-html_static_path = ['_static']
+html_static_path = ["_static"]
 
 # Custom sidebar templates, must be a dictionary that maps document names
 # to template names.
@@ -107,7 +108,7 @@ html_static_path = ['_static']
 # -- Options for HTMLHelp output ---------------------------------------------
 
 # Output file base name for HTML help builder.
-htmlhelp_basename = 'wavinfodoc'
+htmlhelp_basename = "wavinfodoc"
 
 
 # -- Options for LaTeX output ------------------------------------------------
@@ -116,15 +117,12 @@ latex_elements = {
     # The paper size ('letterpaper' or 'a4paper').
     #
     # 'papersize': 'letterpaper',
-
     # The font size ('10pt', '11pt' or '12pt').
     #
     # 'pointsize': '10pt',
-
     # Additional stuff for the LaTeX preamble.
     #
     # 'preamble': '',
-
     # Latex figure (float) alignment
     #
     # 'figure_align': 'htbp',
@@ -134,8 +132,7 @@ latex_elements = {
 # (source start file, target name, title,
 #  author, documentclass [howto, manual, or own class]).
 latex_documents = [
-    (master_doc, 'wavinfo.tex', u'wavinfo Documentation',
-     u'Jamie Hardt', 'manual'),
+    (master_doc, "wavinfo.tex", "wavinfo Documentation", "Jamie Hardt", "manual"),
 ]
 
 
@@ -143,10 +140,7 @@ latex_documents = [
 
 # One entry per manual page. List of tuples
 # (source start file, name, description, authors, manual section).
-man_pages = [
-    (master_doc, 'wavinfo', u'wavinfo Documentation',
-     [author], 1)
-]
+man_pages = [(master_doc, "wavinfo", "wavinfo Documentation", [author], 1)]
 
 
 # -- Options for Texinfo output ----------------------------------------------
@@ -155,9 +149,15 @@ man_pages = [
 # (source start file, target name, title, author,
 #  dir menu entry, description, category)
 texinfo_documents = [
-    (master_doc, 'wavinfo', u'wavinfo Documentation',
-     author, 'wavinfo', 'One line description of project.',
-     'Miscellaneous'),
+    (
+        master_doc,
+        "wavinfo",
+        "wavinfo Documentation",
+        author,
+        "wavinfo",
+        "One line description of project.",
+        "Miscellaneous",
+    ),
 ]
 
 
@@ -176,7 +176,7 @@ epub_title = project
 # epub_uid = ''
 
 # A list of files that should not be packed into the epub file.
-epub_exclude_files = ['search.html']
+epub_exclude_files = ["search.html"]
 
 
 # -- Extension configuration -------------------------------------------------

examples/demo.ipynb

@@ -26,7 +26,7 @@
    "source": [
     "from wavinfo import WavInfoReader\n",
     "\n",
-    "path = '../tests/test_files/sounddevices/A101_1.WAV'\n",
+    "path = \"../tests/test_files/sounddevices/A101_1.WAV\"\n",
     "\n",
     "info = WavInfoReader(path)"
    ]
@@ -113,7 +113,12 @@
     }
    ],
    "source": [
-    "(info.fmt.sample_rate, info.fmt.channel_count, info.fmt.block_align, info.fmt.bits_per_sample)"
+    "(\n",
+    "    info.fmt.sample_rate,\n",
+    "    info.fmt.channel_count,\n",
+    "    info.fmt.block_align,\n",
+    "    info.fmt.bits_per_sample,\n",
+    ")"
    ]
   },
   {
@@ -271,7 +276,9 @@
    ],
    "source": [
     "path = \"../tests/test_files/cue_chunks/izotoperx_cues_test.wav\"\n",
-    "info = WavInfoReader(path, info_encoding=\"utf-8\") # iZotope RX seems to encode marker text as UTF-8\n",
+    "info = WavInfoReader(\n",
+    "    path, info_encoding=\"utf-8\"\n",
+    ")  # iZotope RX seems to encode marker text as UTF-8\n",
     "\n",
     "for cue in info.cues.each_cue():\n",
     "    print(f\"Cue ID: {cue[0]}\")\n",

src/wavinfo/__init__.py

@@ -2,8 +2,7 @@
 Probe WAVE Files for iXML, Broadcast-WAVE and other metadata.
 """
 
-__all__ = ['WavInfoReader', 'WavInfoEOFError']
+__all__ = ["WavInfoReader", "WavInfoEOFError"]
 
 from .wave_reader import WavInfoReader
 from .riff_parser import WavInfoEOFError
-

src/wavinfo/__main__.py

@@ -18,7 +18,7 @@ class MyJSONEncoder(json.JSONEncoder):
         if isinstance(o, Enum):
             return o._name_
         elif isinstance(o, bytes):
-            return 'base64:' + b64encode(o).decode('ascii')
+            return "base64:" + b64encode(o).decode("ascii")
         else:
             return super().default(o)
 
@@ -50,7 +50,7 @@ class MetaBrowser(Cmd):
         if isinstance(val, int):
             print(f" - {key}: {val}")
         elif isinstance(val, str):
-            print(f" - {key}: \"{val}\"")
+            print(f' - {key}: "{val}"')
         elif isinstance(val, dict):
             print(f" - {key}: Dict ({len(val)} keys)")
         elif isinstance(val, list):
@@ -63,7 +63,7 @@ class MetaBrowser(Cmd):
             print(f" - {key}: Unknown")
 
     def do_ls(self, _):
-        'List items at the current node: LS'
+        "List items at the current node: LS"
         root = self.cwd
 
         if isinstance(root, list):
@@ -94,7 +94,7 @@ class MetaBrowser(Cmd):
                 if argv[0] in self.cwd.keys():
                     self.path = self.path + [argv[0]]
                 else:
-                    print(f"Key \"{argv[0]}\" does not exist")
+                    print(f'Key "{argv[0]}" does not exist')
 
         if len(self.path) > 0:
             self.prompt = "(" + "/".join(self.path) + ") "
@@ -102,41 +102,40 @@ class MetaBrowser(Cmd):
             self.prompt = "(wavinfo) "
 
     def do_bye(self, _):
-        'Exit the interactive browser: BYE'
+        "Exit the interactive browser: BYE"
         return True
 
 
 def main():
-    version = importlib.metadata.version('wavinfo')
+    version = importlib.metadata.version("wavinfo")
     manpath = os.path.dirname(__file__) + "/man"
     parser = OptionParser()
 
-    parser.usage = 'wavinfo (--adm | --ixml) <FILE> +'
+    parser.usage = "wavinfo (--adm | --ixml) <FILE> +"
 
     # parser.add_option('--install-manpages',
     #                   help="Install manual pages for wavinfo",
     #                   default=False,
     #                   action='store_true')
 
-    parser.add_option('--man',
-                      help="Read the manual and exit.",
-                      default=False,
-                      action='store_true')
+    parser.add_option(
+        "--man", help="Read the manual and exit.", default=False, action="store_true"
+    )
 
-    parser.add_option('--adm', dest='adm',
-                      help='Output ADM XML',
-                      default=False,
-                      action='store_true')
+    parser.add_option(
+        "--adm", dest="adm", help="Output ADM XML", default=False, action="store_true"
+    )
 
-    parser.add_option('--ixml', dest='ixml',
-                      help='Output iXML',
-                      default=False,
-                      action='store_true')
+    parser.add_option(
+        "--ixml", dest="ixml", help="Output iXML", default=False, action="store_true"
+    )
 
-    parser.add_option('-i',
-                      help='Read metadata with an interactive prompt',
-                      default=False,
-                      action='store_true')
+    parser.add_option(
+        "-i",
+        help="Read metadata with an interactive prompt",
+        default=False,
+        action="store_true",
+    )
 
     (options, args) = parser.parse_args(sys.argv)
 
@@ -149,6 +148,7 @@ def main():
 
     if options.man:
         import shlex
+
         print("Which man page?")
         print("1) wavinfo usage")
         print("7) General info on Wave file metadata")
@@ -176,26 +176,27 @@ def main():
                     raise MissingDataError("ixml")
             else:
                 ret_dict = {
-                    'filename': arg,
-                    'run_date': datetime.datetime.now().isoformat(),
-                    'application': f"wavinfo {version}",
-                    'scopes': {}
+                    "filename": arg,
+                    "run_date": datetime.datetime.now().isoformat(),
+                    "application": f"wavinfo {version}",
+                    "scopes": {},
                 }
                 for scope, name, value in this_file.walk():
-                    if scope not in ret_dict['scopes'].keys():
-                        ret_dict['scopes'][scope] = {}
+                    if scope not in ret_dict["scopes"].keys():
+                        ret_dict["scopes"][scope] = {}
 
-                    ret_dict['scopes'][scope][name] = value
+                    ret_dict["scopes"][scope][name] = value
 
                 if options.i:
                     interactive_dict.append(ret_dict)
                 else:
-                    json.dump(ret_dict, cls=MyJSONEncoder, fp=sys.stdout,
-                              indent=2)
+                    json.dump(ret_dict, cls=MyJSONEncoder, fp=sys.stdout, indent=2)
 
         except MissingDataError as e:
-            print("MissingDataError: Missing metadata (%s) in file %s" %
-                  (e, arg), file=sys.stderr)
+            print(
+                "MissingDataError: Missing metadata (%s) in file %s" % (e, arg),
+                file=sys.stderr,
+            )
             continue
         except Exception as e:
             raise e

src/wavinfo/rf64_parser.py

@@ -1,4 +1,5 @@
 import struct
+
 # from collections import namedtuple
 from typing import NamedTuple, Dict
 
@@ -10,38 +11,38 @@ class RF64Context(NamedTuple):
     bigchunk_table: Dict[str, int]
 
 
-def parse_rf64(stream, signature=b'RF64') -> RF64Context:
+def parse_rf64(stream, signature=b"RF64") -> RF64Context:
     start = stream.tell()
-    assert stream.read(4) == b'WAVE'
+    assert stream.read(4) == b"WAVE"
 
     ds64_chunk = riff_parser.parse_chunk(stream)
-    assert type(ds64_chunk) is riff_parser.ChunkDescriptor, \
+    assert type(ds64_chunk) is riff_parser.ChunkDescriptor, (
         f"Expected ds64 chunk here, found {type(ds64_chunk)}"
+    )
 
     ds64_field_spec = "<QQQI"
     ds64_fields_size = struct.calcsize(ds64_field_spec)
-    assert ds64_chunk.ident == b'ds64'
+    assert ds64_chunk.ident == b"ds64"
 
     ds64_data = ds64_chunk.read_data(stream)
     assert len(ds64_data) >= ds64_fields_size
 
     riff_size, data_size, sample_count, length_lookup_table = struct.unpack(
         ds64_field_spec, ds64_data[0:ds64_fields_size]
-        )
+    )
 
     bigchunk_table = {}
     chunksize64format = "<4sL"
     # chunksize64size = struct.calcsize(chunksize64format)
 
     for _ in range(length_lookup_table):
-        bigname, bigsize = struct.unpack_from(chunksize64format,
-                                              ds64_data,
-                                              offset=ds64_fields_size)
+        bigname, bigsize = struct.unpack_from(
+            chunksize64format, ds64_data, offset=ds64_fields_size
+        )
         bigchunk_table[bigname] = bigsize
 
-    bigchunk_table[b'data'] = data_size
+    bigchunk_table[b"data"] = data_size
     bigchunk_table[signature] = riff_size
 
     stream.seek(start, 0)
-    return RF64Context(sample_count=sample_count,
-                       bigchunk_table=bigchunk_table)
+    return RF64Context(sample_count=sample_count, bigchunk_table=bigchunk_table)

src/wavinfo/riff_parser.py

@@ -12,7 +12,7 @@ class WavInfoEOFError(EOFError):
 
 class ListChunkDescriptor(NamedTuple):
     signature: bytes
-    children: List[Union['ChunkDescriptor', 'ListChunkDescriptor']]
+    children: List[Union["ChunkDescriptor", "ListChunkDescriptor"]]
 
 
 class ChunkDescriptor(NamedTuple):
@@ -48,14 +48,15 @@ def parse_chunk(stream, rf64_context=None):
     if len(ident) != 4 or len(size_bytes) != 4:
         raise WavInfoEOFError(identifier=ident, chunk_start=header_start)
 
-    data_size = struct.unpack('<I', size_bytes)[0]
+    data_size = struct.unpack("<I", size_bytes)[0]
 
     if data_size == 0xFFFFFFFF:
-        if rf64_context is None and ident in {b'RF64', b'BW64'}:
+        if rf64_context is None and ident in {b"RF64", b"BW64"}:
             rf64_context = parse_rf64(stream=stream, signature=ident)
 
-        assert rf64_context is not None, \
+        assert rf64_context is not None, (
             "Sentinel data size 0xFFFFFFFF found outside of RF64 context"
+        )
 
         data_size = rf64_context.bigchunk_table[ident]
 
@@ -63,14 +64,14 @@ def parse_chunk(stream, rf64_context=None):
     if displacement % 2:
         displacement += 1
 
-    if ident in {b'RIFF', b'LIST', b'RF64', b'BW64', b'list'}:
-        return parse_list_chunk(stream=stream, length=data_size,
-                                rf64_context=rf64_context)
+    if ident in {b"RIFF", b"LIST", b"RF64", b"BW64", b"list"}:
+        return parse_list_chunk(
+            stream=stream, length=data_size, rf64_context=rf64_context
+        )
 
     else:
         data_start = stream.tell()
         stream.seek(displacement, 1)
-        return ChunkDescriptor(ident=ident,
-                               start=data_start,
-                               length=data_size,
-                               rf64_context=rf64_context)
+        return ChunkDescriptor(
+            ident=ident, start=data_start, length=data_size, rf64_context=rf64_context
+        )

src/wavinfo/wave_adm_reader.py

@@ -2,15 +2,14 @@
 ADM Reader
 """
 
-from struct import unpack, unpack_from, calcsize
-from io import BytesIO
 from collections import namedtuple
+from io import BytesIO
+from struct import calcsize, unpack, unpack_from
 from typing import Optional
 
 from lxml import etree as ET
 
-
-ChannelEntry = namedtuple('ChannelEntry', "track_index uid track_ref pack_ref")
+ChannelEntry = namedtuple("ChannelEntry", "track_index uid track_ref pack_ref")
 
 
 class WavADMReader:
@@ -32,19 +31,19 @@ class WavADMReader:
 
         offset = calcsize(header_fmt)
         for _ in range(uid_count):
-
-            track_index, uid, track_ref, pack_ref = unpack_from(uid_fmt,
-                                                                chna_data,
-                                                                offset)
+            track_index, uid, track_ref, pack_ref = unpack_from(
+                uid_fmt, chna_data, offset
+            )
 
             # these values are either ascii or all null
 
             self.channel_uids.append(
-                ChannelEntry(track_index - 1,
-                             uid.decode('ascii'),
-                             track_ref.decode('ascii'),
-                             pack_ref.decode('ascii')
-                             )
+                ChannelEntry(
+                    track_index - 1,
+                    uid.decode("ascii"),
+                    track_ref.decode("ascii"),
+                    pack_ref.decode("ascii"),
+                )
             )
 
             offset += calcsize(uid_fmt)
@@ -65,40 +64,40 @@ class WavADMReader:
         afext = self.axml.find(".//audioFormatExtended", namespaces=nsmap)
 
         program = afext.find("audioProgramme", namespaces=nsmap)
-        ret_dict['programme_id'] = program.get("audioProgrammeID")
-        ret_dict['programme_name'] = program.get("audioProgrammeName")
-        ret_dict['programme_start'] = program.get("start")
-        ret_dict['programme_end'] = program.get("end")
-        ret_dict['contents'] = []
+        ret_dict["programme_id"] = program.get("audioProgrammeID")
+        ret_dict["programme_name"] = program.get("audioProgrammeName")
+        ret_dict["programme_start"] = program.get("start")
+        ret_dict["programme_end"] = program.get("end")
+        ret_dict["contents"] = []
 
-        for content_ref in program.findall("audioContentIDRef",
-                                           namespaces=nsmap):
+        for content_ref in program.findall("audioContentIDRef", namespaces=nsmap):
             content_dict = dict()
-            content_dict['content_id'] = cid = content_ref.text
-            content = afext.find("audioContent[@audioContentID='%s']" % cid,
-                                 namespaces=nsmap)
-            content_dict['content_name'] = content.get("audioContentName")
-            content_dict['objects'] = []
+            content_dict["content_id"] = cid = content_ref.text
+            content = afext.find(
+                "audioContent[@audioContentID='%s']" % cid, namespaces=nsmap
+            )
+            content_dict["content_name"] = content.get("audioContentName")
+            content_dict["objects"] = []
 
-            for object_ref in content.findall("audioObjectIDRef",
-                                              namespaces=nsmap):
+            for object_ref in content.findall("audioObjectIDRef", namespaces=nsmap):
                 object_dict = dict()
-                object_dict['object_id'] = oid = object_ref.text
-                object = afext.find("audioObject[@audioObjectID='%s']" % oid,
-                                    namespaces=nsmap)
+                object_dict["object_id"] = oid = object_ref.text
+                object = afext.find(
+                    "audioObject[@audioObjectID='%s']" % oid, namespaces=nsmap
+                )
                 pack = object.find("audioPackFormatIDRef", namespaces=nsmap)
-                object_dict['object_name'] = object.get("audioObjectName")
-                object_dict['object_start'] = object.get("start")
-                object_dict['object_duration'] = object.get("duration")
-                object_dict['pack_id'] = pack.text
+                object_dict["object_name"] = object.get("audioObjectName")
+                object_dict["object_start"] = object.get("start")
+                object_dict["object_duration"] = object.get("duration")
+                object_dict["pack_id"] = pack.text
                 track_uid_list = []
                 for t in object.findall("audioTrackUIDRef", namespaces=nsmap):
                     track_uid_list.append(t.text)
 
-                object_dict['track_uids'] = track_uid_list
-                content_dict['objects'].append(object_dict)
+                object_dict["track_uids"] = track_uid_list
+                content_dict["objects"].append(object_dict)
 
-            ret_dict['contents'].append(content_dict)
+            ret_dict["contents"].append(content_dict)
 
         return ret_dict
 
@@ -111,8 +110,9 @@ class WavADMReader:
             *object_name*, *object_id*,
             *pack_format_name*, *pack_type*, *channel_format_name*
         """
-        channel_info = next((x for x in self.channel_uids
-                             if x.track_index == index), None)
+        channel_info = next(
+            (x for x in self.channel_uids if x.track_index == index), None
+        )
 
         if channel_info is None:
             return None
@@ -121,60 +121,78 @@ class WavADMReader:
 
         nsmap = self.axml.getroot().nsmap
 
-        afext = self.axml.find(".//audioFormatExtended",
-                               namespaces=nsmap)
+        afext = self.axml.find(".//audioFormatExtended", namespaces=nsmap)
 
         trackformat_elem = afext.find(
-            "audioTrackFormat[@audioTrackFormatID='%s']"
-            % channel_info.track_ref, namespaces=nsmap)
+            "audioTrackFormat[@audioTrackFormatID='%s']" % channel_info.track_ref,
+            namespaces=nsmap,
+        )
 
         stream_id = trackformat_elem[0].text
 
         channelformatref_elem = afext.find(
-            ("audioStreamFormat[@audioStreamFormatID='%s']"
-             "/audioChannelFormatIDRef") % stream_id,
-            namespaces=nsmap)
-
-        if channelformatref_elem:
+            ("audioStreamFormat[@audioStreamFormatID='%s']/audioChannelFormatIDRef")
+            % stream_id,
+            namespaces=nsmap,
+        )
+        if channelformatref_elem is not None:
             channelformat_id = channelformatref_elem.text
+        else:
+            channelformat_id = None
 
         packformatref_elem = afext.find(
-            ("audioStreamFormat[@audioStreamFormatID='%s']"
-             "/audioPackFormatIDRef") % stream_id,
-            namespaces=nsmap)
+            ("audioStreamFormat[@audioStreamFormatID='%s']/audioPackFormatIDRef")
+            % stream_id,
+            namespaces=nsmap,
+        )
 
-        if packformatref_elem:
+        if packformatref_elem is not None:
             packformat_id = packformatref_elem.text
+        else:
+            packformat_id = None
 
-        channelformat_elem = afext\
-            .find("audioChannelFormat[@audioChannelFormatID='%s']"
-                  % channelformat_id,
-                  namespaces=nsmap)
-        ret_dict['channel_format_name'] = channelformat_elem.get(
-            "audioChannelFormatName")
+        if channelformat_id:
+            channelformat_elem = afext.find(
+                "audioChannelFormat[@audioChannelFormatID='%s']" % channelformat_id,
+                namespaces=nsmap,
+            )
+            ret_dict["channel_format_name"] = channelformat_elem.get(
+                "audioChannelFormatName"
+            )
+        else:
+            ret_dict["channel_format_name"] = None
 
         packformat_elem = afext.find(
-            "audioPackFormat[@audioPackFormatID='%s']" % packformat_id,
-            namespaces=nsmap)
-        ret_dict['pack_type'] = packformat_elem.get(
-            "typeDefinition")
-        ret_dict['pack_format_name'] = packformat_elem.get(
-            "audioPackFormatName")
+            "audioPackFormat[@audioPackFormatID='%s']" % packformat_id, namespaces=nsmap
+        )
+        if packformat_elem is not None:
+            ret_dict["pack_type"] = packformat_elem.get("typeDefinition")
+            ret_dict["pack_format_name"] = packformat_elem.get("audioPackFormatName")
+        else:
+            ret_dict["pack_type"] = None
+            ret_dict["pack_format_name"] = None
 
-        object_elem = afext.find("audioObject[audioPackFormatIDRef = '%s']"
-                                 % packformat_id,
-                                 namespaces=nsmap)
+        object_elem = afext.find(
+            "audioObject[audioPackFormatIDRef = '%s']" % packformat_id, namespaces=nsmap
+        )
 
-        ret_dict['audio_object_name'] = object_elem.get("audioObjectName")
-        object_id = object_elem.get("audioObjectID")
-        ret_dict['object_id'] = object_id
+        if object_elem is not None:
+            ret_dict["audio_object_name"] = object_elem.get("audioObjectName")
+            object_id = object_elem.get("audioObjectID")
+            ret_dict["object_id"] = object_id
 
-        content_elem = afext.find("audioContent/[audioObjectIDRef = '%s']"
-                                  % object_id,
-                                  namespaces=nsmap)
+            content_elem = afext.find(
+                "audioContent/[audioObjectIDRef = '%s']" % object_id, namespaces=nsmap
+            )
 
-        ret_dict['content_name'] = content_elem.get("audioContentName")
-        ret_dict['content_id'] = content_elem.get("audioContentID")
+            ret_dict["content_name"] = content_elem.get("audioContentName")
+            ret_dict["content_id"] = content_elem.get("audioContentID")
+
+        else:
+            ret_dict["audio_object_name"] = None
+            ret_dict["object_id"] = None
+            ret_dict["content_name"] = None
+            ret_dict["content_id"] = None
 
         return ret_dict
 
@@ -188,6 +206,7 @@ class WavADMReader:
             rd.update(self.track_info(channel_uid_rec.track_index))
             return rd
 
-        return dict(channel_entries=list(map(lambda z: make_entry(z),
-                                             self.channel_uids)),
-                    programme=self.programme())
+        return dict(
+            channel_entries=list(map(lambda z: make_entry(z), self.channel_uids)),
+            programme=self.programme(),
+        )

src/wavinfo/wave_bext_reader.py

@@ -13,16 +13,18 @@ class WavBextReader:
             the BEXT metadata scope. According to EBU Rec 3285 this shall be
             ASCII.
         """
-        packstring = "<256s" + "32s" + "32s" + "10s" + "8s" + "QH" + "64s" + \
-            "hhhhh" + "180s"
+        packstring = (
+            "<256s" + "32s" + "32s" + "10s" + "8s" + "QH" + "64s" + "hhhhh" + "180s"
+        )
 
         rest_starts = struct.calcsize(packstring)
         unpacked = struct.unpack(packstring, bext_data[:rest_starts])
 
         def sanitize_bytes(b: bytes) -> str:
             # honestly can't remember why I'm stripping nulls this way
-            first_null = next((index for index, byte in enumerate(b)
-                               if byte == 0), None)
+            first_null = next(
+                (index for index, byte in enumerate(b) if byte == 0), None
+            )
             trimmed = b if first_null is None else b[:first_null]
             decoded = trimmed.decode(encoding)
             return decoded
@@ -91,18 +93,19 @@ class WavBextReader:
 
         # umid_str = None
 
-        return {'description': self.description,
-                'originator': self.originator,
-                'originator_ref': self.originator_ref,
-                'originator_date': self.originator_date,
-                'originator_time': self.originator_time,
-                'time_reference': self.time_reference,
-                'version': self.version,
-                'umid': self.umid,
-                'coding_history': self.coding_history,
-                'loudness_value': self.loudness_value,
-                'loudness_range': self.loudness_range,
-                'max_true_peak': self.max_true_peak,
-                'max_momentary_loudness': self.max_momentary_loudness,
-                'max_shortterm_loudness': self.max_shortterm_loudness
-                }
+        return {
+            "description": self.description,
+            "originator": self.originator,
+            "originator_ref": self.originator_ref,
+            "originator_date": self.originator_date,
+            "originator_time": self.originator_time,
+            "time_reference": self.time_reference,
+            "version": self.version,
+            "umid": self.umid,
+            "coding_history": self.coding_history,
+            "loudness_value": self.loudness_value,
+            "loudness_range": self.loudness_range,
+            "max_true_peak": self.max_true_peak,
+            "max_momentary_loudness": self.max_momentary_loudness,
+            "max_shortterm_loudness": self.max_shortterm_loudness,
+        }

src/wavinfo/wave_cues_reader.py

@@ -7,11 +7,12 @@ IBM Corporation and Microsoft Corporation
 
 https://www.aelius.com/njh/wavemetatools/doc/riffmci.pdf
 """
+
 from dataclasses import dataclass
 from .riff_parser import ChunkDescriptor
 
 from struct import unpack, calcsize
-from typing import Optional, Tuple,  NamedTuple, List, Dict, Any, Generator
+from typing import Optional, Tuple, NamedTuple, List, Dict, Any, Generator
 
 #: Country Codes used in the RIFF standard to resolve locale. These codes
 #: appear in CSET and LTXT metadata.
@@ -100,6 +101,7 @@ class CueEntry(NamedTuple):
     """
     A ``cue`` element structure.
     """
+
     #: Cue "name" or id number
     name: int
     #: Cue position, as a frame count in the play order of the WAVE file. In
@@ -118,29 +120,37 @@ class CueEntry(NamedTuple):
         return calcsize(cls.Format)
 
     @classmethod
-    def read(cls, data: bytes) -> 'CueEntry':
-        assert len(data) == cls.format_size(), \
-            (f"cue data size incorrect, expected {calcsize(cls.Format)} "
-             "found {len(data)}")
+    def read(cls, data: bytes) -> "CueEntry":
+        assert len(data) == cls.format_size(), (
+            f"cue data size incorrect, expected {calcsize(cls.Format)} "
+            "found {len(data)}"
+        )
 
         parsed = unpack(cls.Format, data)
 
-        return cls(name=parsed[0], position=parsed[1], chunk_id=parsed[2],
-                   chunk_start=parsed[3], block_start=parsed[4],
-                   sample_offset=parsed[5])
+        return cls(
+            name=parsed[0],
+            position=parsed[1],
+            chunk_id=parsed[2],
+            chunk_start=parsed[3],
+            block_start=parsed[4],
+            sample_offset=parsed[5],
+        )
 
 
 class LabelEntry(NamedTuple):
     """
     A ``labl`` structure.
     """
+
     name: int
     text: str
 
     @classmethod
     def read(cls, data: bytes, encoding: str):
-        return cls(name=unpack("<I", data[0:4])[0],
-                   text=data[4:].decode(encoding).rstrip("\0"))
+        return cls(
+            name=unpack("<I", data[0:4])[0], text=data[4:].decode(encoding).rstrip("\0")
+        )
 
 
 NoteEntry = LabelEntry
@@ -150,6 +160,7 @@ class RangeLabel(NamedTuple):
     """
     A ``ltxt`` structure.
     """
+
     name: int
     length: int
     purpose: str
@@ -162,21 +173,26 @@ class RangeLabel(NamedTuple):
     @classmethod
     def read(cls, data: bytes, fallback_encoding: str):
         leader_struct_fmt = "<II4sHHHH"
-        parsed = unpack(leader_struct_fmt, data[0:calcsize(leader_struct_fmt)])
-        text_data = data[calcsize(leader_struct_fmt):]
+        parsed = unpack(leader_struct_fmt, data[0 : calcsize(leader_struct_fmt)])
+        text_data = data[calcsize(leader_struct_fmt) :]
 
         if data[6] != 0:
             fallback_encoding = f"cp{data[6]}"
 
-        return cls(name=parsed[0], length=parsed[1], purpose=parsed[2],
-                   country=parsed[3], language=parsed[4],
-                   dialect=parsed[5], codepage=parsed[6],
-                   text=text_data.decode(fallback_encoding))
+        return cls(
+            name=parsed[0],
+            length=parsed[1],
+            purpose=parsed[2],
+            country=parsed[3],
+            language=parsed[4],
+            dialect=parsed[5],
+            codepage=parsed[6],
+            text=text_data.decode(fallback_encoding),
+        )
 
 
 @dataclass
 class WavCuesReader:
-
     #: Every ``cue`` entry in the file
     cues: List[CueEntry]
 
@@ -190,13 +206,15 @@ class WavCuesReader:
     notes: List[NoteEntry]
 
     @classmethod
-    def read_all(cls, f,
-                 cues: Optional[ChunkDescriptor],
-                 labls: List[ChunkDescriptor],
-                 ltxts: List[ChunkDescriptor],
-                 notes: List[ChunkDescriptor],
-                 fallback_encoding: str) -> 'WavCuesReader':
-
+    def read_all(
+        cls,
+        f,
+        cues: Optional[ChunkDescriptor],
+        labls: List[ChunkDescriptor],
+        ltxts: List[ChunkDescriptor],
+        notes: List[ChunkDescriptor],
+        fallback_encoding: str,
+    ) -> "WavCuesReader":
         cue_list = []
         if cues is not None:
             cues_data = cues.read_data(f)
@@ -205,33 +223,31 @@ class WavCuesReader:
             cues_count = unpack("<I", cues_data[0:offset])
 
             for _ in range(cues_count[0]):
-                cue_bytes = cues_data[offset: offset + CueEntry.format_size()]
+                cue_bytes = cues_data[offset : offset + CueEntry.format_size()]
                 cue_list.append(CueEntry.read(cue_bytes))
                 offset += CueEntry.format_size()
 
         label_list = []
         for labl in labls:
             label_list.append(
-                LabelEntry.read(labl.read_data(f),
-                                encoding=fallback_encoding)
+                LabelEntry.read(labl.read_data(f), encoding=fallback_encoding)
             )
 
         range_list = []
         for r in ltxts:
             range_list.append(
-                RangeLabel.read(r.read_data(f),
-                                fallback_encoding=fallback_encoding)
+                RangeLabel.read(r.read_data(f), fallback_encoding=fallback_encoding)
             )
 
         note_list = []
         for note in notes:
             note_list.append(
-                NoteEntry.read(note.read_data(f),
-                               encoding=fallback_encoding)
+                NoteEntry.read(note.read_data(f), encoding=fallback_encoding)
             )
 
-        return WavCuesReader(cues=cue_list, labels=label_list,
-                             ranges=range_list, notes=note_list)
+        return WavCuesReader(
+            cues=cue_list, labels=label_list, ranges=range_list, notes=note_list
+        )
 
     def each_cue(self) -> Generator[Tuple[int, int], None, None]:
         """
@@ -242,8 +258,7 @@ class WavCuesReader:
         for cue in self.cues:
             yield (cue.name, cue.sample_offset)
 
-    def label_and_note(self, cue_ident: int) -> Tuple[Optional[str],
-                                                      Optional[str]]:
+    def label_and_note(self, cue_ident: int) -> Tuple[Optional[str], Optional[str]]:
         """
         Get the label and note (extended comment) for a cue.
 
@@ -251,10 +266,10 @@ class WavCuesReader:
         :returns: a tuple of the the cue's label (if present) and note (if
             present)
         """
-        label = next((label.text for label in self.labels
-                      if label.name == cue_ident), None)
-        note = next((n.text for n in self.notes
-                     if n.name == cue_ident), None)
+        label = next(
+            (label.text for label in self.labels if label.name == cue_ident), None
+        )
+        note = next((n.text for n in self.notes if n.name == cue_ident), None)
         return (label, note)
 
     def range(self, cue_ident: int) -> Optional[int]:
@@ -264,23 +279,22 @@ class WavCuesReader:
         :param cue_ident: the cue's name, its unique identifying number
         :returns: the length of the marker's range, or `None`
         """
-        return next((r.length for r in self.ranges
-                     if r.name == cue_ident), None)
+        return next((r.length for r in self.ranges if r.name == cue_ident), None)
 
     def to_dict(self) -> Dict[str, Any]:
         retval = dict()
 
         for n, t in self.each_cue():
             retval[n] = dict()
-            retval[n]['frame'] = t
+            retval[n]["frame"] = t
             label, note = self.label_and_note(n)
             r = self.range(n)
 
             if label is not None:
-                retval[n]['label'] = label
+                retval[n]["label"] = label
             if note is not None:
-                retval[n]['note'] = note
+                retval[n]["note"] = note
             if r is not None:
-                retval[n]['length'] = r
+                retval[n]["length"] = r
 
         return retval

src/wavinfo/wave_dbmd_reader.py

@@ -19,6 +19,7 @@ class SegmentType(IntEnum):
     """
     Metadata segment type.
     """
+
     EndMarker = 0x0
     DolbyE = 0x1
     # Reserved2 = 0x2
@@ -29,7 +30,7 @@ class SegmentType(IntEnum):
     DolbyDigitalPlus = 0x7
     AudioInfo = 0x8
     DolbyAtmos = 0x9
-    DolbyAtmosSupplemental = 0xa
+    DolbyAtmosSupplemental = 0xA
 
     @classmethod
     def _missing_(cls, val):
@@ -82,6 +83,7 @@ class DolbyDigitalPlusMetadata:
         """
         Dolby surround endcoding mode.
         """
+
         RESERVED = 0b11
         IN_USE = 0b10
         NOT_IN_USE = 0b01
@@ -126,6 +128,7 @@ class DolbyDigitalPlusMetadata:
         Dolby Digital Plus `acmod` field
         § 4.3.2.3
         """
+
         RESERVED = 0b000
         CH_ORD_1_0 = 0b001
         "Mono"
@@ -163,6 +166,7 @@ class DolbyDigitalPlusMetadata:
         Dolby Digital Plus `surmixlev` field
         § 4.3.3.2
         """
+
         DOWN_3DB = 0b00
         DOWN_6DB = 0b01
         MUTE = 0b10
@@ -174,24 +178,28 @@ class DolbyDigitalPlusMetadata:
 
         Per ATSC/A52 § 5.4.2.12, this is not in use and always 0xFF.
         """
+
         pass
 
     class MixLevel(int):
         """
         § 4.3.6.2
         """
+
         pass
 
     class DialnormLevel(int):
         """
         § 4.3.4.4
         """
+
         pass
 
     class RoomType(Enum):
         """
         `roomtyp` 4.3.6.3
         """
+
         NOT_INDICATED = 0b00
         LARGE_ROOM_X_CURVE = 0b01
         SMALL_ROOM_FLAT_CURVE = 0b10
@@ -203,6 +211,7 @@ class DolbyDigitalPlusMetadata:
         should downmix.
         § 4.3.8.1
         """
+
         NOT_INDICATED = 0b00
         PRO_LOGIC = 0b01
         STEREO = 0b10
@@ -213,6 +222,7 @@ class DolbyDigitalPlusMetadata:
         Dolby Surround-EX mode.
         `dsurexmod` § 4.3.9.1
         """
+
         NOT_INDICATED = 0b00
         NOT_SEX = 0b01
         SEX = 0b10
@@ -222,6 +232,7 @@ class DolbyDigitalPlusMetadata:
         """
         `dheadphonmod` § 4.3.9.2
         """
+
         NOT_INDICATED = 0b00
         NOT_DOLBY_HEADPHONE = 0b01
         DOLBY_HEADPHONE = 0b10
@@ -246,6 +257,7 @@ class DolbyDigitalPlusMetadata:
         `compr1` RF compression profile
         § 4.3.10 (fig 42)
         """
+
         NONE = 0
         FILM_STANDARD = 1
         FILM_LIGHT = 2
@@ -341,9 +353,11 @@ class DolbyDigitalPlusMetadata:
             return b
 
         def program_info(b):
-            return (b & 0x40) > 0, \
-                DolbyDigitalPlusMetadata.BitStreamMode(b & 0x38 >> 3), \
-                DolbyDigitalPlusMetadata.AudioCodingMode(b & 0x7)
+            return (
+                (b & 0x40) > 0,
+                DolbyDigitalPlusMetadata.BitStreamMode(b & 0x38 >> 3),
+                DolbyDigitalPlusMetadata.AudioCodingMode(b & 0x7),
+            )
 
         def ddplus_reserved1(_):
             pass
@@ -351,39 +365,49 @@ class DolbyDigitalPlusMetadata:
         def surround_config(b):
             return (
                 DolbyDigitalPlusMetadata.CenterDownMixLevel(b & 0x30 >> 4),
-                DolbyDigitalPlusMetadata.SurroundDownMixLevel(b & 0xc >> 2),
-                DolbyDigitalPlusMetadata.DolbySurroundEncodingMode(b & 0x3)
-                )
+                DolbyDigitalPlusMetadata.SurroundDownMixLevel(b & 0xC >> 2),
+                DolbyDigitalPlusMetadata.DolbySurroundEncodingMode(b & 0x3),
+            )
 
         def dialnorm_info(b):
-            return (b & 0x80) > 0, b & 0x40 > 0, b & 0x20 > 0, \
-                DolbyDigitalPlusMetadata.DialnormLevel(b & 0x1f)
+            return (
+                (b & 0x80) > 0,
+                b & 0x40 > 0,
+                b & 0x20 > 0,
+                DolbyDigitalPlusMetadata.DialnormLevel(b & 0x1F),
+            )
 
         def langcod(b) -> int:
             return b
 
         def audio_prod_info(b):
-            return (b & 0x80) > 0, \
-                DolbyDigitalPlusMetadata.MixLevel(b & 0x7c >> 2), \
-                DolbyDigitalPlusMetadata.RoomType(b & 0x3)
+            return (
+                (b & 0x80) > 0,
+                DolbyDigitalPlusMetadata.MixLevel(b & 0x7C >> 2),
+                DolbyDigitalPlusMetadata.RoomType(b & 0x3),
+            )
 
         # loro_center_downmix_level, loro_surround_downmix_level
         def ext_bsi1_word1(b):
-            return DolbyDigitalPlusMetadata.DownMixLevelToken(b & 0x38 >> 3), \
-                DolbyDigitalPlusMetadata.DownMixLevelToken(b & 0x7)
+            return DolbyDigitalPlusMetadata.DownMixLevelToken(
+                b & 0x38 >> 3
+            ), DolbyDigitalPlusMetadata.DownMixLevelToken(b & 0x7)
 
         # downmix_mode, ltrt_center_downmix_level, ltrt_surround_downmix_level
         def ext_bsi1_word2(b):
-            return DolbyDigitalPlusMetadata\
-                .PreferredDownMixMode(b & 0xC0 >> 6), \
-                DolbyDigitalPlusMetadata.DownMixLevelToken(b & 0x38 >> 3), \
-                DolbyDigitalPlusMetadata.DownMixLevelToken(b & 0x7)
+            return (
+                DolbyDigitalPlusMetadata.PreferredDownMixMode(b & 0xC0 >> 6),
+                DolbyDigitalPlusMetadata.DownMixLevelToken(b & 0x38 >> 3),
+                DolbyDigitalPlusMetadata.DownMixLevelToken(b & 0x7),
+            )
 
         # surround_ex_mode, dolby_headphone_encoded, ad_converter_type
         def ext_bsi2_word1(b):
-            return DolbyDigitalPlusMetadata.SurroundEXMode(b & 0x60 >> 5), \
-                DolbyDigitalPlusMetadata.HeadphoneMode(b & 0x18 >> 3), \
-                DolbyDigitalPlusMetadata.ADConverterType(b & 0x4 >> 2)
+            return (
+                DolbyDigitalPlusMetadata.SurroundEXMode(b & 0x60 >> 5),
+                DolbyDigitalPlusMetadata.HeadphoneMode(b & 0x18 >> 3),
+                DolbyDigitalPlusMetadata.ADConverterType(b & 0x4 >> 2),
+            )
 
         def ddplus_reserved2(_):
             pass
@@ -398,7 +422,7 @@ class DolbyDigitalPlusMetadata:
             pass
 
         def ddplus_info1(b):
-            return DolbyDigitalPlusMetadata.StreamDependency(b & 0xc >> 2)
+            return DolbyDigitalPlusMetadata.StreamDependency(b & 0xC >> 2)
 
         def ddplus_reserved4(_):
             pass
@@ -412,19 +436,24 @@ class DolbyDigitalPlusMetadata:
         pid = program_id(buffer[0])
         lfe_on, bitstream_mode, audio_coding_mode = program_info(buffer[1])
         ddplus_reserved1(buffer[2:2])
-        center_downmix_level, surround_downmix_level, \
-            dolby_surround_encoded = surround_config(buffer[4])
-        langcode_present, copyright_bitstream, original_bitstream, \
-            dialnorm = dialnorm_info(buffer[5])
+        center_downmix_level, surround_downmix_level, dolby_surround_encoded = (
+            surround_config(buffer[4])
+        )
+        langcode_present, copyright_bitstream, original_bitstream, dialnorm = (
+            dialnorm_info(buffer[5])
+        )
         langcode = langcod(buffer[6])
         prod_info_exists, mixlevel, roomtype = audio_prod_info(buffer[7])
 
-        loro_center_downmix_level, \
-            loro_surround_downmix_level = ext_bsi1_word1(buffer[8])
-        downmix_mode, ltrt_center_downmix_level, \
-            ltrt_surround_downmix_level = ext_bsi1_word2(buffer[9])
-        surround_ex_mode, dolby_headphone_encoded, \
-            ad_converter_type = ext_bsi2_word1(buffer[10])
+        loro_center_downmix_level, loro_surround_downmix_level = ext_bsi1_word1(
+            buffer[8]
+        )
+        downmix_mode, ltrt_center_downmix_level, ltrt_surround_downmix_level = (
+            ext_bsi1_word2(buffer[9])
+        )
+        surround_ex_mode, dolby_headphone_encoded, ad_converter_type = ext_bsi2_word1(
+            buffer[10]
+        )
 
         ddplus_reserved2(buffer[11:14])
         compression = compr1(buffer[14])
@@ -436,32 +465,34 @@ class DolbyDigitalPlusMetadata:
         reserved(buffer[27:69])
 
         return DolbyDigitalPlusMetadata(
-                 program_id=pid, lfe_on=lfe_on,
-                 bitstream_mode=bitstream_mode,
-                 audio_coding_mode=audio_coding_mode,
-                 center_downmix_level=center_downmix_level,
-                 surround_downmix_level=surround_downmix_level,
-                 dolby_surround_encoded=dolby_surround_encoded,
-                 langcode_present=langcode_present,
-                 copyright_bitstream=copyright_bitstream,
-                 original_bitstream=original_bitstream,
-                 dialnorm=dialnorm,
-                 langcode=langcode,
-                 prod_info_exists=prod_info_exists,
-                 mixlevel=mixlevel,
-                 roomtype=roomtype,
-                 loro_center_downmix_level=loro_center_downmix_level,
-                 loro_surround_downmix_level=loro_surround_downmix_level,
-                 downmix_mode=downmix_mode,
-                 ltrt_center_downmix_level=ltrt_center_downmix_level,
-                 ltrt_surround_downmix_level=ltrt_surround_downmix_level,
-                 surround_ex_mode=surround_ex_mode,
-                 dolby_headphone_encoded=dolby_headphone_encoded,
-                 ad_converter_type=ad_converter_type,
-                 compression_profile=compression,
-                 dynamic_range=dynamic_range,
-                 stream_dependency=stream_info,
-                 datarate_kbps=data_rate)
+            program_id=pid,
+            lfe_on=lfe_on,
+            bitstream_mode=bitstream_mode,
+            audio_coding_mode=audio_coding_mode,
+            center_downmix_level=center_downmix_level,
+            surround_downmix_level=surround_downmix_level,
+            dolby_surround_encoded=dolby_surround_encoded,
+            langcode_present=langcode_present,
+            copyright_bitstream=copyright_bitstream,
+            original_bitstream=original_bitstream,
+            dialnorm=dialnorm,
+            langcode=langcode,
+            prod_info_exists=prod_info_exists,
+            mixlevel=mixlevel,
+            roomtype=roomtype,
+            loro_center_downmix_level=loro_center_downmix_level,
+            loro_surround_downmix_level=loro_surround_downmix_level,
+            downmix_mode=downmix_mode,
+            ltrt_center_downmix_level=ltrt_center_downmix_level,
+            ltrt_surround_downmix_level=ltrt_surround_downmix_level,
+            surround_ex_mode=surround_ex_mode,
+            dolby_headphone_encoded=dolby_headphone_encoded,
+            ad_converter_type=ad_converter_type,
+            compression_profile=compression,
+            dynamic_range=dynamic_range,
+            stream_dependency=stream_info,
+            datarate_kbps=data_rate,
+        )
 
 
 @dataclass
@@ -488,7 +519,6 @@ class DolbyAtmosMetadata:
 
     @classmethod
     def load(cls, data: bytes):
-
         assert len(data) == cls.SEGMENT_LENGTH
         # (f"DolbyAtmosMetadata segment is incorrect length, "
         #  f"expected {cls.SEGMENT_LENGTH} actual was {len(data)}")
@@ -498,7 +528,7 @@ class DolbyAtmosMetadata:
         h.seek(32, 1)
         toolname = h.read(cls.TOOL_NAME_LENGTH)
         toolname = unpack("%is" % cls.TOOL_NAME_LENGTH, toolname)[0]
-        toolname = toolname.decode('utf-8').strip('\0')
+        toolname = toolname.decode("utf-8").strip("\0")
 
         vers = h.read(3)
         major, minor, fix = unpack("BBB", vers)
@@ -508,10 +538,11 @@ class DolbyAtmosMetadata:
         a_val = unpack("B", h.read(1))[0]
         warp_mode = a_val & 0x7
 
-        return DolbyAtmosMetadata(tool_name=toolname,
-                                  tool_version=(major, minor, fix),
-                                  warp_mode=DolbyAtmosMetadata
-                                  .WarpMode(warp_mode))
+        return DolbyAtmosMetadata(
+            tool_name=toolname,
+            tool_version=(major, minor, fix),
+            warp_mode=DolbyAtmosMetadata.WarpMode(warp_mode),
+        )
 
 
 @dataclass
@@ -531,15 +562,14 @@ class DolbyAtmosSupplementalMetadata:
         NOT_INDICATED = 0x04
 
     object_count: int
-    render_modes: List['DolbyAtmosSupplementalMetadata.BinauralRenderMode']
+    render_modes: List["DolbyAtmosSupplementalMetadata.BinauralRenderMode"]
     trim_modes: List[int]
 
-    MAGIC = 0xf8726fbd
+    MAGIC = 0xF8726FBD
     TRIM_CONFIG_COUNT = 9
 
     @classmethod
     def load(cls, data: bytes):
-
         trim_modes = []
         render_modes = []
 
@@ -564,9 +594,9 @@ class DolbyAtmosSupplementalMetadata:
             binaural_mode &= 0x7
             render_modes.append(binaural_mode)
 
-        return DolbyAtmosSupplementalMetadata(object_count=object_count,
-                                              render_modes=render_modes,
-                                              trim_modes=trim_modes)
+        return DolbyAtmosSupplementalMetadata(
+            object_count=object_count, render_modes=render_modes, trim_modes=trim_modes
+        )
 
 
 class WavDolbyMetadataReader:
@@ -589,9 +619,9 @@ class WavDolbyMetadataReader:
         retval = size
         for b in bs:
             retval += int(b)
-            retval &= 0xff
+            retval &= 0xFF
 
-        retval = ((~retval) + 1) & 0xff
+        retval = ((~retval) + 1) & 0xFF
 
         return retval
 
@@ -614,8 +644,9 @@ class WavDolbyMetadataReader:
             else:
                 seg_size = unpack("<H", h.read(2))[0]
                 seg_payload = h.read(seg_size)
-                expected_checksum = WavDolbyMetadataReader\
-                    .segment_checksum(seg_payload, seg_size)
+                expected_checksum = WavDolbyMetadataReader.segment_checksum(
+                    seg_payload, seg_size
+                )
                 checksum = unpack("B", h.read(1))[0]
 
                 segment = seg_payload
@@ -626,35 +657,41 @@ class WavDolbyMetadataReader:
                 elif stype == SegmentType.DolbyAtmosSupplemental:
                     segment = DolbyAtmosSupplementalMetadata.load(segment)
 
-                self.segment_list\
-                    .append((stype, checksum == expected_checksum, segment))
+                self.segment_list.append(
+                    (stype, checksum == expected_checksum, segment)
+                )
 
     def dolby_digital_plus(self) -> List[DolbyDigitalPlusMetadata]:
         """
         Every valid Dolby Digital Plus metadata segment in the file.
         """
-        return [x[2] for x in self.segment_list
-                if x[0] == SegmentType.DolbyDigitalPlus and x[1]]
+        return [
+            x[2]
+            for x in self.segment_list
+            if x[0] == SegmentType.DolbyDigitalPlus and x[1]
+        ]
 
     def dolby_atmos(self) -> List[DolbyAtmosMetadata]:
         """
         Every valid Dolby Atmos metadata segment in the file.
         """
-        return [x[2] for x in self.segment_list
-                if x[0] == SegmentType.DolbyAtmos and x[1]]
+        return [
+            x[2] for x in self.segment_list if x[0] == SegmentType.DolbyAtmos and x[1]
+        ]
 
     def dolby_atmos_supplemental(self) -> List[DolbyAtmosSupplementalMetadata]:
         """
         Every valid Dolby Atmos Supplemental metadata segment in the file.
         """
-        return [x[2] for x in self.segment_list
-                if x[0] == SegmentType.DolbyAtmosSupplemental and x[1]]
+        return [
+            x[2]
+            for x in self.segment_list
+            if x[0] == SegmentType.DolbyAtmosSupplemental and x[1]
+        ]
 
     def to_dict(self) -> dict:
-
         ddp = map(lambda x: asdict(x), self.dolby_digital_plus())
         atmos = map(lambda x: asdict(x), self.dolby_atmos())
         # atmos_sup = map(lambda x: asdict(x), self.dolby_atmos_supplemental())
 
-        return dict(dolby_digital_plus=list(ddp),
-                    dolby_atmos=list(atmos))
+        return dict(dolby_digital_plus=list(ddp), dolby_atmos=list(atmos))

src/wavinfo/wave_info_reader.py

@@ -4,7 +4,6 @@ from typing import Optional
 
 
 class WavInfoChunkReader:
-
     def __init__(self, f, encoding):
         self.encoding = encoding
 
@@ -12,56 +11,64 @@ class WavInfoChunkReader:
         parsed_chunks = parse_chunk(f)
         assert type(parsed_chunks) is ListChunkDescriptor
 
-        list_chunks = [chunk for chunk in parsed_chunks.children
-                       if type(chunk) is ListChunkDescriptor]
+        list_chunks = [
+            chunk
+            for chunk in parsed_chunks.children
+            if type(chunk) is ListChunkDescriptor
+        ]
 
-        self.info_chunk = next((chunk for chunk in list_chunks
-                                if chunk.signature == b'INFO'), None)
+        self.info_chunk = next(
+            (chunk for chunk in list_chunks if chunk.signature == b"INFO"), None
+        )
 
         #: 'ICOP' Copyright
-        self.copyright: Optional[str] = self._get_field(f, b'ICOP')
+        self.copyright: Optional[str] = self._get_field(f, b"ICOP")
         #: 'IPRD' Product
-        self.product: Optional[str] = self._get_field(f, b'IPRD')
+        self.product: Optional[str] = self._get_field(f, b"IPRD")
         self.album: Optional[str] = self.product
         #: 'IGNR' Genre
-        self.genre: Optional[str] = self._get_field(f, b'IGNR')
+        self.genre: Optional[str] = self._get_field(f, b"IGNR")
         #: 'ISBJ' Subject
-        self.subject: Optional[str] = self._get_field(f, b'ISBJ')
+        self.subject: Optional[str] = self._get_field(f, b"ISBJ")
         #: 'IART' Artist, composer, author
-        self.artist: Optional[str] = self._get_field(f, b'IART')
+        self.artist: Optional[str] = self._get_field(f, b"IART")
         #: 'ICMT' Comment
-        self.comment: Optional[str] = self._get_field(f, b'ICMT')
+        self.comment: Optional[str] = self._get_field(f, b"ICMT")
         #: 'ISFT' Software, encoding application
-        self.software: Optional[str] = self._get_field(f, b'ISFT')
+        self.software: Optional[str] = self._get_field(f, b"ISFT")
         #: 'ICRD' Created date
-        self.created_date: Optional[str] = self._get_field(f, b'ICRD')
+        self.created_date: Optional[str] = self._get_field(f, b"ICRD")
         #: 'IENG' Engineer
-        self.engineer: Optional[str] = self._get_field(f, b'IENG')
+        self.engineer: Optional[str] = self._get_field(f, b"IENG")
         #: 'ITCH' Technician
-        self.technician: Optional[str] = self._get_field(f, b'ITCH')
+        self.technician: Optional[str] = self._get_field(f, b"ITCH")
         #: 'IKEY' Keywords, keyword list
-        self.keywords: Optional[str] = self._get_field(f, b'IKEY')
+        self.keywords: Optional[str] = self._get_field(f, b"IKEY")
         #: 'INAM' Name, title
-        self.title: Optional[str] = self._get_field(f, b'INAM')
+        self.title: Optional[str] = self._get_field(f, b"INAM")
         #: 'ISRC' Source
-        self.source: Optional[str] = self._get_field(f, b'ISRC')
+        self.source: Optional[str] = self._get_field(f, b"ISRC")
         #: 'TAPE' Tape
-        self.tape: Optional[str] = self._get_field(f, b'TAPE')
+        self.tape: Optional[str] = self._get_field(f, b"TAPE")
         #: 'IARL' Archival Location
-        self.archival_location: Optional[str] = self._get_field(f, b'IARL')
+        self.archival_location: Optional[str] = self._get_field(f, b"IARL")
         #: 'ICSM' Commissioned
-        self.commissioned: Optional[str] = self._get_field(f, b'ICMS')
+        self.commissioned: Optional[str] = self._get_field(f, b"ICMS")
 
     def _get_field(self, f, field_ident) -> Optional[str]:
-        search = next(((chunk.start, chunk.length)
-                       for chunk in self.info_chunk.children
-                       if chunk.ident == field_ident),
-                      None)
+        search = next(
+            (
+                (chunk.start, chunk.length)
+                for chunk in self.info_chunk.children
+                if chunk.ident == field_ident
+            ),
+            None,
+        )
 
         if search is not None:
             f.seek(search[0])
             data = f.read(search[1])
-            return data.decode(self.encoding).rstrip('\0')
+            return data.decode(self.encoding).rstrip("\0")
         else:
             return None
 
@@ -69,26 +76,27 @@ class WavInfoChunkReader:
         """
         A dictionary with all of the key/values read from the INFO scope.
         """
-        return {'copyright': self.copyright,
-                'product': self.product,
-                'album': self.album,
-                'genre': self.genre,
-                'artist': self.artist,
-                'comment': self.comment,
-                'software': self.software,
-                'created_date': self.created_date,
-                'engineer': self.engineer,
-                'keywords': self.keywords,
-                'title': self.title,
-                'source': self.source,
-                'tape': self.tape,
-                'commissioned': self.commissioned,
-                'archival_location': self.archival_location,
-                'subject': self.subject,
-                'technician': self.technician
-                }
+        return {
+            "copyright": self.copyright,
+            "product": self.product,
+            "album": self.album,
+            "genre": self.genre,
+            "artist": self.artist,
+            "comment": self.comment,
+            "software": self.software,
+            "created_date": self.created_date,
+            "engineer": self.engineer,
+            "keywords": self.keywords,
+            "title": self.title,
+            "source": self.source,
+            "tape": self.tape,
+            "commissioned": self.commissioned,
+            "archival_location": self.archival_location,
+            "subject": self.subject,
+            "technician": self.technician,
+        }
 
     def __repr__(self):
         return_val = self.to_dict()
-        return_val.update({'encoding': self.encoding})
+        return_val.update({"encoding": self.encoding})
         return str(return_val)

src/wavinfo/wave_ixml_reader.py

@@ -1,5 +1,6 @@
 from lxml import etree as ET
 import io
+
 # from collections import namedtuple
 from typing import Optional
 from enum import IntEnum
@@ -22,6 +23,7 @@ class SteinbergMetadata:
         """
         Steinberg speaker format enumeration.
         """
+
         MONO = 0
         STEREO = 1
         LRC = 10
@@ -79,7 +81,8 @@ class SteinbergMetadata:
         `AudioSpeakerArrangement` property
         """
         val = self.parsed.find(
-            "./ATTR_LIST/ATTR[NAME = 'AudioSpeakerArrangement']/VALUE")
+            "./ATTR_LIST/ATTR[NAME = 'AudioSpeakerArrangement']/VALUE"
+        )
         if val is not None:
             return type(self).AudioSpeakerArrangement(int(val.text))
 
@@ -88,8 +91,7 @@ class SteinbergMetadata:
         """
         AudioSampleFormatSize
         """
-        val = self.parsed.find(
-            "./ATTR_LIST/ATTR[NAME = 'AudioSampleFormatSize']/VALUE")
+        val = self.parsed.find("./ATTR_LIST/ATTR[NAME = 'AudioSampleFormatSize']/VALUE")
         if val is not None:
             return int(val.text)
 
@@ -98,8 +100,7 @@ class SteinbergMetadata:
         """
         MediaCompany
         """
-        val = self.parsed.find(
-            "./ATTR_LIST/ATTR[NAME = 'MediaCompany']/VALUE")
+        val = self.parsed.find("./ATTR_LIST/ATTR[NAME = 'MediaCompany']/VALUE")
         if val is not None:
             return val.text
 
@@ -108,8 +109,7 @@ class SteinbergMetadata:
         """
         MediaDropFrames
         """
-        val = self.parsed.find(
-            "./ATTR_LIST/ATTR[NAME = 'MediaDropFrames']/VALUE")
+        val = self.parsed.find("./ATTR_LIST/ATTR[NAME = 'MediaDropFrames']/VALUE")
         if val is not None:
             return val.text == "1"
 
@@ -118,8 +118,7 @@ class SteinbergMetadata:
         """
         MediaDuration
         """
-        val = self.parsed.find(
-            "./ATTR_LIST/ATTR[NAME = 'MediaDuration']/VALUE")
+        val = self.parsed.find("./ATTR_LIST/ATTR[NAME = 'MediaDuration']/VALUE")
         if val is not None:
             return float(val.text)
 
@@ -192,13 +191,12 @@ class WavIXMLFormat:
         :yields: `IXMLTrack` for each track.
         """
         for track in self.parsed.find("./TRACK_LIST").iter():
-            if track.tag == 'TRACK':
+            if track.tag == "TRACK":
                 yield IXMLTrack(
-                    channel_index=track.xpath('string(CHANNEL_INDEX/text())'),
-                    interleave_index=track.xpath(
-                        'string(INTERLEAVE_INDEX/text())'),
-                    name=track.xpath('string(NAME/text())'),
-                    function=track.xpath('string(FUNCTION/text())')
+                    channel_index=track.xpath("string(CHANNEL_INDEX/text())"),
+                    interleave_index=track.xpath("string(INTERLEAVE_INDEX/text())"),
+                    name=track.xpath("string(NAME/text())"),
+                    function=track.xpath("string(FUNCTION/text())"),
                 )
 
     @property
@@ -258,6 +256,10 @@ class WavIXMLFormat:
     def to_dict(self):
         return dict(
             track_list=list(map(lambda x: x._asdict(), self.track_list)),
-            project=self.project, scene=self.scene, take=self.take,
-            tape=self.tape, family_uid=self.family_uid,
-            family_name=self.family_name)
+            project=self.project,
+            scene=self.scene,
+            take=self.take,
+            tape=self.tape,
+            family_uid=self.family_uid,
+            family_name=self.family_name,
+        )

src/wavinfo/wave_reader.py

@@ -38,7 +38,7 @@ class WavInfoReader:
     Parse a WAV audio file for metadata.
     """
 
-    def __init__(self, path, info_encoding='latin_1', bext_encoding='ascii'):
+    def __init__(self, path, info_encoding="latin_1", bext_encoding="ascii"):
         """
         Create a new reader object.
 
@@ -86,9 +86,9 @@ class WavInfoReader:
         #: Sampler `smpl` metadata
         self.smpl: Optional[WavSmplReader] = None
 
-        if hasattr(path, 'read'):
+        if hasattr(path, "read"):
             self.get_wav_info(path)
-            self.url = 'about:blank'
+            self.url = "about:blank"
             self.path = repr(path)
 
         else:
@@ -99,7 +99,7 @@ class WavInfoReader:
 
             self.path = absolute_path
 
-            with open(path, 'rb') as path:
+            with open(path, "rb") as path:
                 self.get_wav_info(path)
 
     def get_wav_info(self, wavfile):
@@ -119,36 +119,43 @@ class WavInfoReader:
         self.smpl = self._get_sampler_loops(wavfile)
         self.data = self._describe_data()
 
-    def _find_chunk_data(self, ident, from_stream,
-                         default_none=False) -> Optional[bytes]:
-        top_chunks = (chunk for chunk in self.main_list
-                      if type(chunk) is ChunkDescriptor and
-                      chunk.ident == ident)
+    def _find_chunk_data(
+        self, ident, from_stream, default_none=False
+    ) -> Optional[bytes]:
+        top_chunks = (
+            chunk
+            for chunk in self.main_list
+            if type(chunk) is ChunkDescriptor and chunk.ident == ident
+        )
 
-        chunk_descriptor = next(top_chunks, None) \
-            if default_none else next(top_chunks)
+        chunk_descriptor = next(top_chunks, None) if default_none else next(top_chunks)
 
-        return chunk_descriptor.read_data(from_stream) \
-            if chunk_descriptor else None
+        return chunk_descriptor.read_data(from_stream) if chunk_descriptor else None
 
     def _find_list_chunk(self, signature) -> Optional[ListChunkDescriptor]:
-        top_chunks = (chunk for chunk in self.main_list
-                      if type(chunk) is ListChunkDescriptor and
-                      chunk.signature == signature)
+        top_chunks = (
+            chunk
+            for chunk in self.main_list
+            if type(chunk) is ListChunkDescriptor and chunk.signature == signature
+        )
 
         return next(top_chunks, None)
 
     def _describe_data(self):
-        data_chunk = next(c for c in self.main_list
-                          if type(c) is ChunkDescriptor and c.ident == b'data')
+        data_chunk = next(
+            c
+            for c in self.main_list
+            if type(c) is ChunkDescriptor and c.ident == b"data"
+        )
 
         assert isinstance(self.fmt, WavAudioFormat)
         return WavDataDescriptor(
             byte_count=data_chunk.length,
-            frame_count=int(data_chunk.length / self.fmt.block_align))
+            frame_count=int(data_chunk.length / self.fmt.block_align),
+        )
 
     def _get_format(self, f):
-        fmt_data = self._find_chunk_data(b'fmt ', f)
+        fmt_data = self._find_chunk_data(b"fmt ", f)
         assert fmt_data is not None, "Fmt data not found, not a valid wav file"
 
         packstring = "<HHIIHH"
@@ -156,62 +163,79 @@ class WavInfoReader:
 
         unpacked = struct.unpack(packstring, fmt_data[:rest_starts])
 
-        return WavAudioFormat(audio_format=unpacked[0],
-                              channel_count=unpacked[1],
-                              sample_rate=unpacked[2],
-                              byte_rate=unpacked[3],
-                              block_align=unpacked[4],
-                              bits_per_sample=unpacked[5]
-                              )
+        return WavAudioFormat(
+            audio_format=unpacked[0],
+            channel_count=unpacked[1],
+            sample_rate=unpacked[2],
+            byte_rate=unpacked[3],
+            block_align=unpacked[4],
+            bits_per_sample=unpacked[5],
+        )
 
     def _get_info(self, f, encoding):
-        finder = (chunk.signature for chunk in self.main_list
-                  if type(chunk) is ListChunkDescriptor)
+        finder = (
+            chunk.signature
+            for chunk in self.main_list
+            if type(chunk) is ListChunkDescriptor
+        )
 
-        if b'INFO' in finder:
+        if b"INFO" in finder:
             return WavInfoChunkReader(f, encoding)
 
     def _get_bext(self, f, encoding):
-        bext_data = self._find_chunk_data(b'bext', f, default_none=True)
+        bext_data = self._find_chunk_data(b"bext", f, default_none=True)
         return WavBextReader(bext_data, encoding) if bext_data else None
 
     def _get_adm(self, f):
-        axml = self._find_chunk_data(b'axml', f, default_none=True)
-        chna = self._find_chunk_data(b'chna', f, default_none=True)
-        return WavADMReader(axml_data=axml, chna_data=chna) \
-            if axml and chna else None
+        axml = self._find_chunk_data(b"axml", f, default_none=True)
+        chna = self._find_chunk_data(b"chna", f, default_none=True)
+        return WavADMReader(axml_data=axml, chna_data=chna) if axml and chna else None
 
     def _get_dbmd(self, f):
-        dbmd_data = self._find_chunk_data(b'dbmd', f, default_none=True)
-        return WavDolbyMetadataReader(dbmd_data=dbmd_data) \
-            if dbmd_data else None
+        dbmd_data = self._find_chunk_data(b"dbmd", f, default_none=True)
+        return WavDolbyMetadataReader(dbmd_data=dbmd_data) if dbmd_data else None
 
     def _get_ixml(self, f):
-        ixml_data = self._find_chunk_data(b'iXML', f, default_none=True)
-        return WavIXMLFormat(ixml_data.rstrip(b'\0')) if ixml_data else None
+        ixml_data = self._find_chunk_data(b"iXML", f, default_none=True)
+        return WavIXMLFormat(ixml_data.rstrip(b"\0")) if ixml_data else None
 
     def _get_cue(self, f):
-        cue = next((cue_chunk for cue_chunk in self.main_list if
-                    type(cue_chunk) is ChunkDescriptor and
-                    cue_chunk.ident == b'cue '), None)
+        cue = next(
+            (
+                cue_chunk
+                for cue_chunk in self.main_list
+                if type(cue_chunk) is ChunkDescriptor and cue_chunk.ident == b"cue "
+            ),
+            None,
+        )
 
-        adtl = self._find_list_chunk(b'adtl')
+        adtl = self._find_list_chunk(b"adtl")
         labls = []
         ltxts = []
         notes = []
         if adtl is not None:
-            labls = [c for c in adtl.children
-                     if type(c) is ChunkDescriptor and c.ident == b'labl']
-            ltxts = [c for c in adtl.children
-                     if type(c) is ChunkDescriptor and c.ident == b'ltxt']
-            notes = [c for c in adtl.children
-                     if type(c) is ChunkDescriptor and c.ident == b'note']
+            labls = [
+                c
+                for c in adtl.children
+                if type(c) is ChunkDescriptor and c.ident == b"labl"
+            ]
+            ltxts = [
+                c
+                for c in adtl.children
+                if type(c) is ChunkDescriptor and c.ident == b"ltxt"
+            ]
+            notes = [
+                c
+                for c in adtl.children
+                if type(c) is ChunkDescriptor and c.ident == b"note"
+            ]
 
-        return WavCuesReader.read_all(f, cue, labls, ltxts, notes,
-                                      fallback_encoding=self.info_encoding)
+        return WavCuesReader.read_all(
+            f, cue, labls, ltxts, notes, fallback_encoding=self.info_encoding
+        )
 
     def _get_sampler_loops(self, f):
-        sampler_data = self._find_chunk_data(b'smpl', f, default_none=True)
+        sampler_data = self._find_chunk_data(b"smpl", f, default_none=True)
         return WavSmplReader(sampler_data) if sampler_data else None
 
     # FIXME: this should probably be named "iter()"
@@ -225,22 +249,24 @@ class WavInfoReader:
             "smpl".
         """
 
-        scopes = ('fmt', 'data', 'ixml', 'bext', 'info', 'adm', 'cues',
-                  'dolby', 'smpl')
+        scopes = ("fmt", "data", "ixml", "bext", "info", "adm", "cues", "dolby", "smpl")
 
         for scope in scopes:
-            if scope in ['fmt', 'data']:
+            if scope in ["fmt", "data"]:
                 attr = self.__getattribute__(scope)
                 for field in attr._fields:
                     yield scope, field, attr.__getattribute__(field)
 
             else:
-                mdict = self.__getattribute__(scope).to_dict(
-                ) if self.__getattribute__(scope) else {}
+                mdict = (
+                    self.__getattribute__(scope).to_dict()
+                    if self.__getattribute__(scope)
+                    else {}
+                )
                 for key in mdict.keys():
                     yield scope, key, mdict[key]
 
     def __repr__(self):
-        return 'WavInfoReader({}, {}, {})'.format(self.path,
-                                                  self.info_encoding,
-                                                  self.bext_encoding)
+        return "WavInfoReader({}, {}, {})".format(
+            self.path, self.info_encoding, self.bext_encoding
+        )

src/wavinfo/wave_smpl_reader.py

@@ -13,30 +13,29 @@ class WaveSmplLoop(NamedTuple):
 
     def loop_type_desc(self):
         if self.loop_type == 0:
-            return 'FORWARD'
+            return "FORWARD"
         elif self.loop_type == 1:
-            return 'FORWARD_BACKWARD'
+            return "FORWARD_BACKWARD"
         elif self.loop_type == 2:
-            return 'BACKWARD'
+            return "BACKWARD"
         elif 3 <= self.loop_type <= 31:
-            return 'RESERVED'
+            return "RESERVED"
         else:
-            return 'VENDOR'
+            return "VENDOR"
 
     def to_dict(self):
         return {
-            'ident': self.ident,
-            'loop_type': self.loop_type,
-            'loop_type_description': self.loop_type_desc(),
-            'start_samples': self.start,
-            'end_samples': self.end,
-            'detune_cents': self.detune_cents,
-            'repetition_count': self.repetition_count,
+            "ident": self.ident,
+            "loop_type": self.loop_type,
+            "loop_type_description": self.loop_type_desc(),
+            "start_samples": self.start,
+            "end_samples": self.end,
+            "detune_cents": self.detune_cents,
+            "repetition_count": self.repetition_count,
         }
 
 
 class WavSmplReader:
-
     def __init__(self, smpl_data: bytes):
         """
         Read sampler metadata from smpl chunk.
@@ -47,8 +46,7 @@ class WavSmplReader:
         header_size = struct.calcsize(header_field_fmt)
         loop_size = struct.calcsize(loop_field_fmt)
 
-        unpacked_data = struct.unpack(header_field_fmt,
-                                      smpl_data[0:header_size])
+        unpacked_data = struct.unpack(header_field_fmt, smpl_data[0:header_size])
 
         #: The MIDI Manufacturer's Association code for the sampler
         #: manufactuer, or 0 if not specific.
@@ -80,35 +78,39 @@ class WavSmplReader:
         #: List of loops in the file.
         self.sample_loops: List[WaveSmplLoop] = []
 
-        loop_buffer = smpl_data[header_size:
-                                header_size + loop_size * loop_count]
+        loop_buffer = smpl_data[header_size : header_size + loop_size * loop_count]
 
         for unpacked_loop in struct.iter_unpack(loop_field_fmt, loop_buffer):
-            self.sample_loops.append(WaveSmplLoop(
-                ident=unpacked_loop[0],
-                loop_type=unpacked_loop[1],
-                start=unpacked_loop[2],
-                end=unpacked_loop[3],
-                detune_cents=unpacked_loop[4],
-                repetition_count=unpacked_loop[5]))
+            self.sample_loops.append(
+                WaveSmplLoop(
+                    ident=unpacked_loop[0],
+                    loop_type=unpacked_loop[1],
+                    start=unpacked_loop[2],
+                    end=unpacked_loop[3],
+                    detune_cents=unpacked_loop[4],
+                    repetition_count=unpacked_loop[5],
+                )
+            )
 
         #: Sampler-specific user data.
         self.sampler_udata: bytes | None = None
 
         if sampler_udata_length > 0:
             self.sampler_udata = smpl_data[
-                header_size + loop_size * loop_count:
-                header_size + loop_size * loop_count + sampler_udata_length]
+                header_size + loop_size * loop_count : header_size
+                + loop_size * loop_count
+                + sampler_udata_length
+            ]
 
     def to_dict(self):
         return {
-            'manufactuer': self.manufacturer,
-            'product': self.product,
-            'sample_period_ns': self.sample_period_ns,
-            'midi_note': self.midi_note,
-            'midi_pitch_detune_cents': self.midi_pitch_detune_cents,
-            'smpte_format': self.smpte_format,
-            'smpte_offset': "%02i:%02i:%02i:%02i" % self.smpte_offset,
-            'loops': [x.to_dict() for x in self.sample_loops],
-            'sampler_user_data': self.sampler_udata,
+            "manufactuer": self.manufacturer,
+            "product": self.product,
+            "sample_period_ns": self.sample_period_ns,
+            "midi_note": self.midi_note,
+            "midi_pitch_detune_cents": self.midi_pitch_detune_cents,
+            "smpte_format": self.smpte_format,
+            "smpte_offset": "%02i:%02i:%02i:%02i" % self.smpte_offset,
+            "loops": [x.to_dict() for x in self.sample_loops],
+            "sampler_user_data": self.sampler_udata,
         }

src/wavinfo/wavfind.py

@@ -1,6 +1,4 @@
-"""
-
-"""
+""" """
 
 from optparse import OptionParser, OptionGroup
 import sys
@@ -9,24 +7,19 @@ import sys
 def main():
     parser = OptionParser()
 
-    parser.usage = ("wavfind [--scene=SCENE] [--take=TAKE] [--desc=DESC] "
-                    "<PATH> +")
+    parser.usage = "wavfind [--scene=SCENE] [--take=TAKE] [--desc=DESC] <PATH> +"
 
-    primaries = OptionGroup(parser, title="Search Predicates",
-                            description="Argument values can be globs, "
-                            "and are logically-AND'ed.")
+    primaries = OptionGroup(
+        parser,
+        title="Search Predicates",
+        description="Argument values can be globs, and are logically-AND'ed.",
+    )
 
-    primaries.add_option("--scene",
-                         help='Search for this scene',
-                         metavar='SCENE')
+    primaries.add_option("--scene", help="Search for this scene", metavar="SCENE")
 
-    primaries.add_option("--take",
-                         help='Search for this take',
-                         metavar='TAKE')
+    primaries.add_option("--take", help="Search for this take", metavar="TAKE")
 
-    primaries.add_option("--desc",
-                         help='Search descriptions',
-                         metavar='DESC')
+    primaries.add_option("--desc", help="Search descriptions", metavar="DESC")
 
     (options, args) = parser.parse_args(sys.argv)
 

tests/__init__.py

@@ -19,7 +19,7 @@ from contextlib import contextmanager
 
 #     @property
 #     def arch_path(self):
-#         return os.path.join(self.base_path, self.test_file_arch_name)        
+#         return os.path.join(self.base_path, self.test_file_arch_name)
 
 #     @contextmanager
 #     def open(self, name) -> Generator[BytesIO]:
@@ -40,5 +40,3 @@ from contextlib import contextmanager
 #                         p = os.path.join(root, name)
 #                         zip.write(p)
 #                         os.unlink(p)
-
-

tests/test_adm.py

@@ -2,8 +2,8 @@ from unittest import TestCase
 
 import wavinfo
 
-class TestADMWave(TestCase):
 
+class TestADMWave(TestCase):
     def setUp(self) -> None:
         self.protools_adm_wav = "tests/test_files/protools/Test_ADM_ProTools.wav"
         return super().setUp()
@@ -24,7 +24,7 @@ class TestADMWave(TestCase):
         assert adm is not None
         dict = adm.to_dict()
         self.assertIsNotNone(dict)
-    
+
     def test_programme(self):
         info = wavinfo.WavInfoReader(self.protools_adm_wav)
         adm = info.adm
@@ -32,8 +32,8 @@ class TestADMWave(TestCase):
         pdict = adm.programme()
         self.assertIn("programme_id", pdict.keys())
         self.assertIn("programme_name", pdict.keys())
-        self.assertEqual(pdict['programme_id'], 'APR_1001')
-        self.assertEqual(pdict['programme_name'], 'Atmos_Master')
+        self.assertEqual(pdict["programme_id"], "APR_1001")
+        self.assertEqual(pdict["programme_name"], "Atmos_Master")
         self.assertIn("contents", pdict.keys())
         self.assertEqual(len(pdict["contents"]), 3)
 
@@ -51,4 +51,3 @@ class TestADMWave(TestCase):
         t10 = adm.track_info(10)
         self.assertTrue("content_name" in t10.keys())
         self.assertEqual("Dialog", t10["content_name"])
-        

tests/test_cue.py

@@ -3,9 +3,10 @@ from glob import glob
 
 import wavinfo
 
+
 class TestCue(TestCase):
     def setUp(self) -> None:
-        self.test_files = glob("tests/test_files/cue_chunks/*.wav") 
+        self.test_files = glob("tests/test_files/cue_chunks/*.wav")
         return super().setUp()
 
     def test_enumerate(self):
@@ -14,7 +15,7 @@ class TestCue(TestCase):
         self.assertIsNotNone(w1.cues)
         assert w1.cues is not None
         vals = list(w1.cues.each_cue())
-        self.assertEqual(vals, [(1,29616),(2,74592),(3,121200)])
+        self.assertEqual(vals, [(1, 29616), (2, 74592), (3, 121200)])
 
     def test_labels_notes(self):
         file = "tests/test_files/cue_chunks/izotoperx_cues_test.wav"
@@ -23,7 +24,7 @@ class TestCue(TestCase):
         assert w1.cues is not None
 
         for name, _ in w1.cues.each_cue():
-            self.assertIn(name,[1,2,3])
+            self.assertIn(name, [1, 2, 3])
             label, note = w1.cues.label_and_note(name)
             if name == 1:
                 self.assertEqual("Marker 1", label)
@@ -35,18 +36,20 @@ class TestCue(TestCase):
         self.assertIsNotNone(w1.cues)
         assert w1.cues is not None
 
-        self.assertEqual(w1.cues.range(3), 10000) 
+        self.assertEqual(w1.cues.range(3), 10000)
 
     def test_encoding_fallback(self):
         """
         Added this after I noticed that iZotope RX seems to just encode "notes"
-        as utf-8 without bothering to dump this info into the ltxt or 
+        as utf-8 without bothering to dump this info into the ltxt or
         specifying an encoding by some other means.
         """
         file = "tests/test_files/cue_chunks/izotoperx_cues_test.wav"
-        w = wavinfo.WavInfoReader(file, info_encoding='utf-8')
-        expected = ("Лорем ипсум долор сит амет, тимеам вивендум хас ет, "  
-            "цу адолесценс дефинитионес еам.")
+        w = wavinfo.WavInfoReader(file, info_encoding="utf-8")
+        expected = (
+            "Лорем ипсум долор сит амет, тимеам вивендум хас ет, "
+            "цу адолесценс дефинитионес еам."
+        )
 
         assert w.cues is not None
         note = [n for n in w.cues.notes if n.name == 3]
@@ -56,20 +59,16 @@ class TestCue(TestCase):
     def test_label(self):
         file = "tests/test_files/cue_chunks/izotoperx_cues_test.wav"
         w = wavinfo.WavInfoReader(file)
-        
+
         self.assertIsNotNone(w.cues)
-        assert w.cues is not None  
+        assert w.cues is not None
 
         self.assertEqual(len(w.cues.labels), 3)
         for label in w.cues.labels:
-            self.assertIn(label.name, [1,2,3])
+            self.assertIn(label.name, [1, 2, 3])
             if label.name == 1:
                 self.assertEqual(label.text, "Marker 1")
             elif label.name == 2:
                 self.assertEqual(label.text, "Marker 2")
             elif label.name == 3:
                 self.assertEqual(label.text, "Marker 3")
-
-
-
-

tests/test_dolby.py

@@ -3,6 +3,7 @@ from unittest import TestCase
 import wavinfo
 from wavinfo.wave_dbmd_reader import SegmentType, DolbyDigitalPlusMetadata
 
+
 class TestDolby(TestCase):
     def setUp(self):
         self.test_file = "tests/test_files/protools/Test_ADM_ProTools.wav"
@@ -10,19 +11,17 @@ class TestDolby(TestCase):
     def test_version(self):
         t1 = wavinfo.WavInfoReader(self.test_file)
         d = t1.dolby
-        
+
         assert d is not None
-        self.assertEqual((1,0,0,6), d.version)
+        self.assertEqual((1, 0, 0, 6), d.version)
 
     def test_segments(self):
         t1 = wavinfo.WavInfoReader(self.test_file)
         d = t1.dolby
         assert d is not None
 
-        ddp = [x for x in d.segment_list \
-                if x[0] == SegmentType.DolbyDigitalPlus]
-        atmos = [x for x in d.segment_list \
-                if x[0] == SegmentType.DolbyAtmos]
+        ddp = [x for x in d.segment_list if x[0] == SegmentType.DolbyDigitalPlus]
+        atmos = [x for x in d.segment_list if x[0] == SegmentType.DolbyAtmos]
 
         self.assertEqual(len(ddp), 1)
         self.assertEqual(len(atmos), 1)
@@ -40,21 +39,23 @@ class TestDolby(TestCase):
         d = t1.dolby
         assert d is not None
         ddp = d.dolby_digital_plus()
-        self.assertEqual(len(ddp), 1, 
-                         ("Failed to find exactly one Dolby Digital Plus " 
-                          "metadata segment")
-                         )
+        self.assertEqual(
+            len(ddp),
+            1,
+            ("Failed to find exactly one Dolby Digital Plus metadata segment"),
+        )
+
+        self.assertTrue(
+            ddp[0].audio_coding_mode,
+            DolbyDigitalPlusMetadata.AudioCodingMode.CH_ORD_3_2,
+        )
+        self.assertTrue(ddp[0].lfe_on)
 
-        self.assertTrue( ddp[0].audio_coding_mode, 
-                        DolbyDigitalPlusMetadata.AudioCodingMode.CH_ORD_3_2 )
-        self.assertTrue( ddp[0].lfe_on)
-        
     def test_atmos(self):
         t1 = wavinfo.WavInfoReader(self.test_file)
         d = t1.dolby
         assert d is not None
         atmos = d.dolby_atmos()
-        self.assertEqual(len(atmos), 1, 
-                         "Failed to find exactly one Atmos metadata segment")
-
-    
+        self.assertEqual(
+            len(atmos), 1, "Failed to find exactly one Atmos metadata segment"
+        )

tests/test_main.py

@@ -7,10 +7,10 @@ from wavinfo.__main__ import main
 import sys
 import glob
 
+
 class MainTest(unittest.TestCase):
-    
-    def test_empty_argv(self): 
-        with patch.object(sys, 'argv', []):
+    def test_empty_argv(self):
+        with patch.object(sys, "argv", []):
             try:
                 main()
             except:
@@ -18,17 +18,17 @@ class MainTest(unittest.TestCase):
 
     def test_a_file(self):
         for path in glob.glob("tests/test_files/**/*.wav"):
-            with patch.object(sys, 'argv', ["TEST", path]):
+            with patch.object(sys, "argv", ["TEST", path]):
                 try:
                     main()
                 except:
-                    self.fail("main() throwing an exception") 
+                    self.fail("main() throwing an exception")
 
     def test_ixml(self):
-        with patch.object(sys, 'argv', 
-                          ['TEST', '--ixml', 
-                           'tests/test_files/sounddevices/A101_1.WAV']):
+        with patch.object(
+            sys, "argv", ["TEST", "--ixml", "tests/test_files/sounddevices/A101_1.WAV"]
+        ):
             try:
                 main()
             except:
-                self.fail("main() throwing an exception") 
+                self.fail("main() throwing an exception")

tests/test_rf64.py

@@ -9,17 +9,15 @@ from unittest import TestCase
 
 import wavinfo
 
-class TestRf64(TestCase):
 
+class TestRf64(TestCase):
     def setUp(self) -> None:
         return super().setUp()
 
     def test_open(self):
-
         for path in glob("tests/test_files/rf64/*.wav.gz"):
             gz = gzip.open(path)
             wav_info = wavinfo.WavInfoReader(gz)
 
             self.assertIsNotNone(wav_info)
             # self.assertIsNotNone(wav_info.bext)
-

tests/test_smpl.py

@@ -3,6 +3,7 @@ from glob import glob
 
 import wavinfo
 
+
 class TestSmpl(TestCase):
     def setUp(self) -> None:
         self.test_files = glob("tests/test_files/smpl/*.wav")

tests/test_walk.py

@@ -3,35 +3,35 @@ import wavinfo
 
 import glob
 
+
 class TestWalk(unittest.TestCase):
     def test_walk_metadata(self):
-        test_file = 'tests/test_files/protools/PT A101_4.A1.wav'
+        test_file = "tests/test_files/protools/PT A101_4.A1.wav"
         info = wavinfo.WavInfoReader(test_file)
 
-        tested_data , tested_format = False, False
+        tested_data, tested_format = False, False
         for scope, key, value in info.walk():
-            if scope == 'fmt':
-                if key == 'channel_count':
+            if scope == "fmt":
+                if key == "channel_count":
                     tested_format = True
                     self.assertEqual(value, 2)
-            if scope == 'data':
-                if key == 'frame_count':
+            if scope == "data":
+                if key == "frame_count":
                     tested_data = True
                     self.assertEqual(value, 144140)
 
         self.assertTrue(tested_data and tested_format)
 
     def test_walk_all(self):
-        for file in glob.glob('tests/test_files/**/*.wav'):
+        for file in glob.glob("tests/test_files/**/*.wav"):
             info = wavinfo.WavInfoReader(file)
-            
+
             try:
                 for _, _, _ in info.walk():
-                    pass 
+                    pass
             except:
                 self.fail(f"Failed to walk metadata in file {file}")
 
-        
 
-if __name__ == '__main__':
+if __name__ == "__main__":
     unittest.main()

tests/test_wave_parsing.py

@@ -13,9 +13,10 @@ class TestWaveInfo(TestCase):
     def test_sanity(self):
         for wav_file in all_files():
             info = wavinfo.WavInfoReader(wav_file)
-            self.assertEqual(info.__repr__(), 
-                             'WavInfoReader({}, latin_1, ascii)'
-                             .format(os.path.abspath(wav_file)))
+            self.assertEqual(
+                info.__repr__(),
+                "WavInfoReader({}, latin_1, ascii)".format(os.path.abspath(wav_file)),
+            )
             self.assertIsNotNone(info)
 
     def test_fmt_against_ffprobe(self):
@@ -26,31 +27,39 @@ class TestWaveInfo(TestCase):
             assert info.fmt is not None
             assert ffprobe_info is not None
 
-            self.assertEqual(info.fmt.channel_count, 
-                             ffprobe_info['streams'][0]['channels'])
-            self.assertEqual(info.fmt.sample_rate, 
-                             int(ffprobe_info['streams'][0]['sample_rate']))
-            self.assertEqual(info.fmt.bits_per_sample, 
-                             int(ffprobe_info['streams'][0]['bits_per_sample']
-                                 ))
+            self.assertEqual(
+                info.fmt.channel_count, ffprobe_info["streams"][0]["channels"]
+            )
+            self.assertEqual(
+                info.fmt.sample_rate, int(ffprobe_info["streams"][0]["sample_rate"])
+            )
+            self.assertEqual(
+                info.fmt.bits_per_sample,
+                int(ffprobe_info["streams"][0]["bits_per_sample"]),
+            )
 
             if info.fmt.audio_format == 1:
-                self.assertTrue(ffprobe_info['streams'][0]['codec_name']\
-                        .startswith('pcm'))
-                streams = ffprobe_info['streams'][0]
-                byte_rate = int(streams['sample_rate']) * \
-                        streams['channels'] * \
-                        int(streams['bits_per_sample']) / 8
+                self.assertTrue(
+                    ffprobe_info["streams"][0]["codec_name"].startswith("pcm")
+                )
+                streams = ffprobe_info["streams"][0]
+                byte_rate = (
+                    int(streams["sample_rate"])
+                    * streams["channels"]
+                    * int(streams["bits_per_sample"])
+                    / 8
+                )
                 self.assertEqual(info.fmt.byte_rate, byte_rate)
 
     def test_data_against_ffprobe(self):
         for wav_file in all_files():
             info = wavinfo.WavInfoReader(wav_file)
-            ffprobe_info = cast(Dict[str,Any], ffprobe(wav_file))
+            ffprobe_info = cast(Dict[str, Any], ffprobe(wav_file))
             assert ffprobe_info is not None
             assert info.data is not None
-            self.assertEqual(info.data.frame_count, 
-                             int(ffprobe_info['streams'][0]['duration_ts']))
+            self.assertEqual(
+                info.data.frame_count, int(ffprobe_info["streams"][0]["duration_ts"])
+            )
 
     def test_bext_against_ffprobe(self):
         for wav_file in all_files():
@@ -59,65 +68,78 @@ class TestWaveInfo(TestCase):
             assert ffprobe_info is not None
 
             if info.bext:
-                if 'comment' in ffprobe_info['format']['tags']:
-                    self.assertEqual(info.bext.description, 
-                                     ffprobe_info['format']['tags']\
-                                             ['comment'])
+                if "comment" in ffprobe_info["format"]["tags"]:
+                    self.assertEqual(
+                        info.bext.description, ffprobe_info["format"]["tags"]["comment"]
+                    )
                 else:
-                    self.assertEqual(info.bext.description, '')
+                    self.assertEqual(info.bext.description, "")
 
-                if 'encoded_by' in ffprobe_info['format']['tags']:
-                    self.assertEqual(info.bext.originator, 
-                                     ffprobe_info['format']['tags']\
-                                             ['encoded_by'])
+                if "encoded_by" in ffprobe_info["format"]["tags"]:
+                    self.assertEqual(
+                        info.bext.originator,
+                        ffprobe_info["format"]["tags"]["encoded_by"],
+                    )
                 else:
-                    self.assertEqual(info.bext.originator, '')
+                    self.assertEqual(info.bext.originator, "")
 
-                if 'originator_reference' in ffprobe_info['format']['tags']:
-                    self.assertEqual(info.bext.originator_ref, 
-                                     ffprobe_info['format']['tags']\
-                                             ['originator_reference'])
+                if "originator_reference" in ffprobe_info["format"]["tags"]:
+                    self.assertEqual(
+                        info.bext.originator_ref,
+                        ffprobe_info["format"]["tags"]["originator_reference"],
+                    )
                 else:
-                    self.assertEqual(info.bext.originator_ref, '')
+                    self.assertEqual(info.bext.originator_ref, "")
 
                 # these don't always reflect the bext info
-                # self.assertEqual(info.bext.originator_date, 
+                # self.assertEqual(info.bext.originator_date,
                 # ffprobe_info['format']['tags']['date'])
-                # self.assertEqual(info.bext.originator_time, 
+                # self.assertEqual(info.bext.originator_time,
                 # ffprobe_info['format']['tags']['creation_time'])
-                self.assertEqual(info.bext.time_reference, 
-                                 int(ffprobe_info['format']['tags']\
-                                         ['time_reference']))
+                self.assertEqual(
+                    info.bext.time_reference,
+                    int(ffprobe_info["format"]["tags"]["time_reference"]),
+                )
 
-                if 'coding_history' in ffprobe_info['format']['tags']:
-                    self.assertEqual(info.bext.coding_history, 
-                                     ffprobe_info['format']['tags']\
-                                             ['coding_history'])
+                if "coding_history" in ffprobe_info["format"]["tags"]:
+                    self.assertEqual(
+                        info.bext.coding_history,
+                        ffprobe_info["format"]["tags"]["coding_history"],
+                    )
                 else:
-                    self.assertEqual(info.bext.coding_history, '')
+                    self.assertEqual(info.bext.coding_history, "")
 
     def test_ixml(self):
-        expected = {'A101_4.WAV': {'project': 'BMH', 
-                                   'scene': 'A101', 'take': '4',
-                                   'tape': '18Y12M31', 
-                                   'family_uid': 
-                                   'USSDVGR1112089007124015008231000'},
-                    'A101_3.WAV': {'project': 'BMH', 
-                                   'scene': 'A101', 'take': '3',
-                                   'tape': '18Y12M31', 
-                                   'family_uid': 
-                                   'USSDVGR1112089007124014008228300'},
-                    'A101_2.WAV': {'project': 'BMH', 
-                                   'scene': 'A101', 'take': '2',
-                                   'tape': '18Y12M31', 
-                                   'family_uid':        
-                                   'USSDVGR1112089007124004008218600'},
-                    'A101_1.WAV': {'project': 'BMH', 
-                                   'scene': 'A101', 'take': '1',
-                                   'tape': '18Y12M31', 
-                                   'family_uid': 
-                                   'USSDVGR1112089007124001008206300'},
-                    }
+        expected = {
+            "A101_4.WAV": {
+                "project": "BMH",
+                "scene": "A101",
+                "take": "4",
+                "tape": "18Y12M31",
+                "family_uid": "USSDVGR1112089007124015008231000",
+            },
+            "A101_3.WAV": {
+                "project": "BMH",
+                "scene": "A101",
+                "take": "3",
+                "tape": "18Y12M31",
+                "family_uid": "USSDVGR1112089007124014008228300",
+            },
+            "A101_2.WAV": {
+                "project": "BMH",
+                "scene": "A101",
+                "take": "2",
+                "tape": "18Y12M31",
+                "family_uid": "USSDVGR1112089007124004008218600",
+            },
+            "A101_1.WAV": {
+                "project": "BMH",
+                "scene": "A101",
+                "take": "1",
+                "tape": "18Y12M31",
+                "family_uid": "USSDVGR1112089007124001008206300",
+            },
+        }
 
         for wav_file in all_files():
             basename = os.path.basename(wav_file)
@@ -125,29 +147,31 @@ class TestWaveInfo(TestCase):
                 info = wavinfo.WavInfoReader(wav_file)
                 e = expected[basename]
                 self.assertIsNotNone(info.ixml)
-                assert info.ixml is not None 
-                self.assertEqual(e['project'], info.ixml.project)
-                self.assertEqual(e['scene'], info.ixml.scene)
-                self.assertEqual(e['take'], info.ixml.take)
-                self.assertEqual(e['tape'], info.ixml.tape)
-                self.assertEqual(e['family_uid'], info.ixml.family_uid)
+                assert info.ixml is not None
+                self.assertEqual(e["project"], info.ixml.project)
+                self.assertEqual(e["scene"], info.ixml.scene)
+                self.assertEqual(e["take"], info.ixml.take)
+                self.assertEqual(e["tape"], info.ixml.tape)
+                self.assertEqual(e["family_uid"], info.ixml.family_uid)
 
                 for track in info.ixml.track_list:
                     self.assertIsNotNone(track.channel_index)
-                    if basename == 'A101_4.WAV' and track.channel_index == '1':
-                        self.assertEqual(track.name, 'MKH516 A')
+                    if basename == "A101_4.WAV" and track.channel_index == "1":
+                        self.assertEqual(track.name, "MKH516 A")
 
     def test_steinberg_ixml(self):
-        nuendo_files = 'tests/test_files/nuendo/*.wav'
+        nuendo_files = "tests/test_files/nuendo/*.wav"
         for file in glob(nuendo_files):
             info = wavinfo.WavInfoReader(file)
-            assert info.ixml is not None 
+            assert info.ixml is not None
             self.assertIsNotNone(info.ixml.steinberg)
             assert info.ixml.steinberg is not None
             self.assertIsNotNone(info.ixml.steinberg.audio_speaker_arrangement)
-            self.assertEqual(info.ixml.steinberg.sample_format_size, 3) 
-            self.assertEqual(info.ixml.steinberg.media_company, 
-                             "https://github.com/iluvcapra/wavinfo")
+            self.assertEqual(info.ixml.steinberg.sample_format_size, 3)
+            self.assertEqual(
+                info.ixml.steinberg.media_company,
+                "https://github.com/iluvcapra/wavinfo",
+            )
             self.assertFalse(info.ixml.steinberg.media_drop_frames)
             self.assertEqual(info.ixml.steinberg.media_duration, 1200.0)
 
@@ -159,24 +183,21 @@ class TestWaveInfo(TestCase):
         self.assertIsNone(info.ixml.steinberg)
 
     def test_info_metadata(self):
-        file_with_metadata = \
-                'tests/test_files/sound_grinder_pro/new_camera bumb 1.wav'
+        file_with_metadata = "tests/test_files/sound_grinder_pro/new_camera bumb 1.wav"
         self.assertTrue(os.path.exists(file_with_metadata))
         info = wavinfo.WavInfoReader(file_with_metadata).info
 
         assert info is not None
-        self.assertEqual(info.title, 'camera bumb 1')
-        self.assertEqual(info.artist, 'Jamie Hardt')
-        self.assertEqual(info.copyright, '© 2010 Jamie Hardt')
-        self.assertEqual(info.product, 'Test Sounds')  # album
+        self.assertEqual(info.title, "camera bumb 1")
+        self.assertEqual(info.artist, "Jamie Hardt")
+        self.assertEqual(info.copyright, "© 2010 Jamie Hardt")
+        self.assertEqual(info.product, "Test Sounds")  # album
         self.assertEqual(info.album, info.product)
-        self.assertEqual(info.comment, 'Comments')
-        self.assertEqual(info.software, 'Sound Grinder Pro')
-        self.assertEqual(info.created_date, '2010-12-28')
-        self.assertEqual(info.engineer, 'JPH')
-        self.assertEqual(info.keywords,
-                         'Sound Effect, movement, microphone, bump')
-        self.assertEqual(info.title, 'camera bumb 1')
+        self.assertEqual(info.comment, "Comments")
+        self.assertEqual(info.software, "Sound Grinder Pro")
+        self.assertEqual(info.created_date, "2010-12-28")
+        self.assertEqual(info.engineer, "JPH")
+        self.assertEqual(info.keywords, "Sound Effect, movement, microphone, bump")
+        self.assertEqual(info.title, "camera bumb 1")
         self.assertEqual(type(info.to_dict()), dict)
         self.assertEqual(type(info.__repr__()), str)
-

tests/utils.py

@@ -4,35 +4,33 @@ import subprocess
 from subprocess import PIPE
 import json
 
-FFPROBE = 'ffprobe'
+FFPROBE = "ffprobe"
 
 
 def ffprobe(path):
-    arguments = [FFPROBE, "-of", "json", 
-                 "-show_format", "-show_streams", path]
-    if int(sys.version[0]) <  3:
+    arguments = [FFPROBE, "-of", "json", "-show_format", "-show_streams", path]
+    if int(sys.version[0]) < 3:
         process = subprocess.Popen(arguments, stdout=PIPE)
         process.wait()
         if process.returncode == 0:
             output = process.communicate()[0]
             if output:
-                output_str = output.decode('utf-8')
+                output_str = output.decode("utf-8")
                 return json.loads(output_str)
         else:
             return None
-    else: 
-        process = subprocess.run(arguments, stdin=None, 
-                                 stdout=PIPE, stderr=PIPE)
+    else:
+        process = subprocess.run(arguments, stdin=None, stdout=PIPE, stderr=PIPE)
         if process.returncode == 0:
-            output_str = process.stdout.decode('utf-8')
+            output_str = process.stdout.decode("utf-8")
             return json.loads(output_str)
         else:
             return None
 
 
 def all_files():
-    for dirpath, _, filenames in os.walk('tests/test_files'):
+    for dirpath, _, filenames in os.walk("tests/test_files"):
         for filename in filenames:
             _, ext = os.path.splitext(filename)
-            if ext in ['.wav', '.WAV']:
+            if ext in [".wav", ".WAV"]:
                 yield os.path.join(dirpath, filename)