Removing .flake8 file

Moved module into src/ and modernized pyproject.toml

.coveragerc

@@ -1,13 +0,0 @@
-[run]
-branch = True
-source = wavinfo 
-
-[report]
-exclude_lines =
-    if self.debug:
-    pragma: no cover
-    raise NotImplementedError
-    if __name__ == .__main__.:
-ignore_errors = True
-omit =
-    tests/*

.devcontainer/devcontainer.json

@@ -0,0 +1,26 @@
+{
+	"image": "mcr.microsoft.com/devcontainers/universal:2",
+	"features": {
+    	"ghcr.io/devcontainers/features/anaconda:1": {},
+    	"ghcr.io/devcontainers/features/python:1": {
+    	"version":"3.11"
+    },
+    "ghcr.io/meaningful-ooo/devcontainer-features/fish:1": {}
+},
+"postCreateCommand": "pip3 install -r requirements.txt && pip3 install -r docs/requirements.txt && pip3 install pytest && conda install -y ffmpeg",
+"customizations": {
+	"vscode": {
+		"extensions": [
+			"ms-python.isort",
+			"ms-toolsai.jupyter",
+			"ms-toolsai.vscode-jupyter-cell-tags",
+			"ms-toolsai.jupyter-keymap",
+			"ms-toolsai.jupyter-renderers",
+			"ms-toolsai.vscode-jupyter-slideshow",
+			"ms-python.python",
+			"ms-python.vscode-pylance",
+			"george-alisson.html-preview-vscode"
+		]
+	}
+}
+}

.github/ISSUE_TEMPLATE/add-support-for-new-metadata-type.md

@@ -0,0 +1,26 @@
+---
+name: Add Support For New Metadata Type
+about: For adding support for a new type of metadata
+title: "[METADATA]"
+labels: ''
+assignees: ''
+
+---
+
+**Describe the type of metadata you want to read:**
+???
+
+**List some applications that read and write this metadata:**
+???
+
+**List the authorities or organizations that use and standardize this metadata:**
+???
+
+**URL for example WAVE file with this metadata:**
+???
+
+**(Optional) Four-character code identifier for this metadata (if known):**
+???
+
+**(Optional) URLs for documentation of this metadata:**
+???

.github/workflows/coverage.yml

@@ -0,0 +1,39 @@
+name: Test Coverage
+
+on:
+  push:
+    branches: [ "master" ]
+  pull_request:
+    branches: [ "master" ]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        python-version: ["3.11"]
+
+    steps:
+      - uses: actions/checkout@v2.5.0
+      - name: Set up Python ${{ matrix.python-version }}
+        uses: actions/setup-python@v4.3.0
+        with:
+          python-version: ${{ matrix.python-version }}
+      - name: Install dependencies
+        run: |
+          python -m pip install --upgrade pip
+          python -m pip install flake8 pytest
+          python -m pip install -e .
+      - name: Setup FFmpeg
+        uses: FedericoCarboni/setup-ffmpeg@v2
+      - name: Generate coverage report
+        run: |
+          pip install pytest
+          pip install pytest-cov
+          pytest --cov=./ --cov-report=xml
+      - name: Codecov
+        # You may pin to the exact commit or the version.
+        # uses: codecov/codecov-action@eaaf4bedf32dbdc6b720b63067d99c4d77d6047d
+        uses: codecov/codecov-action@v3.1.4
+      

.github/workflows/python-package.yml

@@ -0,0 +1,36 @@
+# This workflow will install Python dependencies, run tests and lint with a variety of Python versions
+# For more information see: https://docs.github.com/en/actions/automating-builds-and-tests/building-and-testing-python
+
+name: Tests
+
+on:
+  push:
+    branches: [ "master" ]
+  pull_request:
+    branches: [ "master" ]
+
+jobs:
+  build:
+
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        python-version: ["3.9", "3.10", "3.11", "3.12", "3.13", "3.14"]
+
+    steps:
+    - uses: actions/checkout@v2.5.0
+    - name: Set up Python ${{ matrix.python-version }}
+      uses: actions/setup-python@v4.3.0
+      with:
+        python-version: ${{ matrix.python-version }}
+    - name: Install dependencies
+      run: |
+        python -m pip install --upgrade pip
+        python -m pip install --group dev
+        python -m pip install .
+    - name: Setup FFmpeg
+      uses: FedericoCarboni/setup-ffmpeg@v2
+    - name: Test with pytest
+      run: |
+        pytest

.github/workflows/python-ruff.yml

@@ -0,0 +1,33 @@
+# This workflow will install Python dependencies, run tests and lint with a variety of Python versions
+# For more information see: https://docs.github.com/en/actions/automating-builds-and-tests/building-and-testing-python
+
+name: Lint with Ruff
+
+on:
+  push:
+    branches: [ "master" ]
+  pull_request:
+    branches: [ "master" ]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        python-version: ["3.13", "3.14"]
+
+    steps:
+    - uses: actions/checkout@v2.5.0
+    - name: Set up Python ${{ matrix.python-version }}
+      uses: actions/setup-python@v4.3.0
+      with:
+        python-version: ${{ matrix.python-version }}
+    - name: Install dependencies
+      run: |
+        python -m pip install --upgrade pip
+        python -m pip install --group dev
+        python -m pip install .
+    - name: Lint with ruff 
+      run: |
+        ruff check src

.github/workflows/pythonpublish.yml

@@ -2,25 +2,35 @@ name: Upload Python Package
 
 on:
   release:
-    types: [created]
+    types: [published]
 
 jobs:
   deploy:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v1
+    - uses: actions/checkout@v4.2.2
     - name: Set up Python
-      uses: actions/setup-python@v1
+      uses: actions/setup-python@v5.3.0
       with:
         python-version: '3.x'
     - name: Install dependencies
       run: |
         python -m pip install --upgrade pip
-        pip install setuptools wheel twine lxml
-    - name: Build and publish
-      env:
-        TWINE_USERNAME: ${{ secrets.PYPI_USERNAME }}
-        TWINE_PASSWORD: ${{ secrets.PYPI_PASSWORD }}
-      run: |
-        python setup.py sdist bdist_wheel
-        twine upload dist/*
+        pip install setuptools build wheel twine lxml
+    - name: Build 
+        python -m build .
+    - name: Publish to Pypi
+      uses: pypa/gh-action-pypi-publish@v1.12.2
+      with:
+        password: ${{ secrets.PYPI_APIKEY }}
+    - name: Send Bluesky Post
+      uses: myConsciousness/bluesky-post@v5
+      with:
+        text: |
+          I've released a new version of wavinfo, my module for 
+          reading WAVE metadata.
+        link-preview-url: ${{ github.server_url }}/${{ github.repository }}
+        identifier: ${{ secrets.BLUESKY_APP_USER }}  
+        password: ${{ secrets.BLUESKY_APP_PASSWORD }}
+        service: bsky.social    
+        retry-count: 1

.gitignore

@@ -89,6 +89,8 @@ venv/
 ENV/
 env.bak/
 venv.bak/
+docs_venv/
+venv_docs/
 
 # Spyder project settings
 .spyderproject
@@ -106,3 +108,7 @@ venv.bak/
 # vim swap
 *.swp
 .DS_Store
+
+.vscode/
+
+poetry.lock

.idea/.gitignore

@@ -1,3 +0,0 @@
-
-# Default ignored files
-/workspace.xml

.idea/dictionaries/jamiehardt.xml

@@ -1,9 +0,0 @@
-<component name="ProjectDictionaryState">
-  <dictionary name="jamiehardt">
-    <words>
-      <w>bext</w>
-      <w>ident</w>
-      <w>umid</w>
-    </words>
-  </dictionary>
-</component>

.idea/inspectionProfiles/profiles_settings.xml

@@ -1,6 +0,0 @@
-<component name="InspectionProjectProfileManager">
-  <settings>
-    <option name="USE_PROJECT_PROFILE" value="false" />
-    <version value="1.0" />
-  </settings>
-</component>

.idea/misc.xml

@@ -1,4 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project version="4">
-  <component name="ProjectRootManager" version="2" project-jdk-name="Python 3.8 (wavinfo)" project-jdk-type="Python SDK" />
-</project>

.idea/modules.xml

@@ -1,8 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project version="4">
-  <component name="ProjectModuleManager">
-    <modules>
-      <module fileurl="file://$PROJECT_DIR$/.idea/wavinfo.iml" filepath="$PROJECT_DIR$/.idea/wavinfo.iml" />
-    </modules>
-  </component>
-</project>

.idea/vcs.xml

@@ -1,6 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project version="4">
-  <component name="VcsDirectoryMappings">
-    <mapping directory="" vcs="Git" />
-  </component>
-</project>

.idea/wavinfo.iml

@@ -1,10 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<module type="PYTHON_MODULE" version="4">
-  <component name="NewModuleRootManager">
-    <content url="file://$MODULE_DIR$">
-      <excludeFolder url="file://$MODULE_DIR$/venv" />
-    </content>
-    <orderEntry type="jdk" jdkName="Python 3.8" jdkType="Python SDK" />
-    <orderEntry type="sourceFolder" forTests="false" />
-  </component>
-</module>

.readthedocs.yaml

@@ -0,0 +1,32 @@
+# .readthedocs.yaml
+# Read the Docs configuration file
+# See https://docs.readthedocs.io/en/stable/config-file/v2.html for details
+
+# Required
+version: 2
+
+# Set the version of Python and other tools you might need
+build:
+  os: ubuntu-20.04
+  tools:
+    python: "3.10"
+    # You can also specify other tool versions:
+    # nodejs: "16"
+    # rust: "1.55"
+    # golang: "1.17"
+
+# Build documentation in the docs/ directory with Sphinx
+sphinx:
+   configuration: docs/source/conf.py
+
+#If using Sphinx, optionally build your docs in additional formats such as PDF
+formats:
+   - pdf
+
+#Optionally declare the Python requirements required to build your docs
+python:
+  install:
+    - method: pip
+      path: .
+      extra_requirements:
+        - doc

.travis.yml

@@ -1,27 +0,0 @@
-dist: xenial
-language: python
-python:
-#    - "2.7"
-#    - "3.5"
-    - "3.6"
-    - "3.7"
-    - "3.8"
-    - "3.9"
-script:
-    - "gunzip tests/test_files/rf64/*.gz"
-    - "python setup.py test"
-    - "python -m pytest tests/ -v --cov wavinfo --cov-report term-missing"
-before_install:
-    - "sudo apt-get update"
-    - "sudo add-apt-repository universe"
-    - "sudo apt-get install -y ffmpeg"
-    - "pip install pytest"
-    - "pip install lxml"
-    - "pip install coverage"
-    - "pip install codecov"
-    - "pip install pytest-cov==2.5.0"
-    - "pip install coverage==4.4"
-install:
-    - "pip install setuptools"
-after_success:
-    - "codecov"

CODE_OF_CONDUCT.md

@@ -0,0 +1,128 @@
+# Contributor Covenant Code of Conduct
+
+## Our Pledge
+
+We as members, contributors, and leaders pledge to make participation in our
+community a harassment-free experience for everyone, regardless of age, body
+size, visible or invisible disability, ethnicity, sex characteristics, gender
+identity and expression, level of experience, education, socio-economic status,
+nationality, personal appearance, race, religion, or sexual identity
+and orientation.
+
+We pledge to act and interact in ways that contribute to an open, welcoming,
+diverse, inclusive, and healthy community.
+
+## Our Standards
+
+Examples of behavior that contributes to a positive environment for our
+community include:
+
+* Demonstrating empathy and kindness toward other people
+* Being respectful of differing opinions, viewpoints, and experiences
+* Giving and gracefully accepting constructive feedback
+* Accepting responsibility and apologizing to those affected by our mistakes,
+  and learning from the experience
+* Focusing on what is best not just for us as individuals, but for the
+  overall community
+
+Examples of unacceptable behavior include:
+
+* The use of sexualized language or imagery, and sexual attention or
+  advances of any kind
+* Trolling, insulting or derogatory comments, and personal or political attacks
+* Public or private harassment
+* Publishing others' private information, such as a physical or email
+  address, without their explicit permission
+* Other conduct which could reasonably be considered inappropriate in a
+  professional setting
+
+## Enforcement Responsibilities
+
+Community leaders are responsible for clarifying and enforcing our standards of
+acceptable behavior and will take appropriate and fair corrective action in
+response to any behavior that they deem inappropriate, threatening, offensive,
+or harmful.
+
+Community leaders have the right and responsibility to remove, edit, or reject
+comments, commits, code, wiki edits, issues, and other contributions that are
+not aligned to this Code of Conduct, and will communicate reasons for moderation
+decisions when appropriate.
+
+## Scope
+
+This Code of Conduct applies within all community spaces, and also applies when
+an individual is officially representing the community in public spaces.
+Examples of representing our community include using an official e-mail address,
+posting via an official social media account, or acting as an appointed
+representative at an online or offline event.
+
+## Enforcement
+
+Instances of abusive, harassing, or otherwise unacceptable behavior may be
+reported to the community leaders responsible for enforcement at
+[the GitHub Issues Tab](https://github.com/iluvcapra/wavinfo/issues).
+All complaints will be reviewed and investigated promptly and fairly.
+
+All community leaders are obligated to respect the privacy and security of the
+reporter of any incident.
+
+## Enforcement Guidelines
+
+Community leaders will follow these Community Impact Guidelines in determining
+the consequences for any action they deem in violation of this Code of Conduct:
+
+### 1. Correction
+
+**Community Impact**: Use of inappropriate language or other behavior deemed
+unprofessional or unwelcome in the community.
+
+**Consequence**: A private, written warning from community leaders, providing
+clarity around the nature of the violation and an explanation of why the
+behavior was inappropriate. A public apology may be requested.
+
+### 2. Warning
+
+**Community Impact**: A violation through a single incident or series
+of actions.
+
+**Consequence**: A warning with consequences for continued behavior. No
+interaction with the people involved, including unsolicited interaction with
+those enforcing the Code of Conduct, for a specified period of time. This
+includes avoiding interactions in community spaces as well as external channels
+like social media. Violating these terms may lead to a temporary or
+permanent ban.
+
+### 3. Temporary Ban
+
+**Community Impact**: A serious violation of community standards, including
+sustained inappropriate behavior.
+
+**Consequence**: A temporary ban from any sort of interaction or public
+communication with the community for a specified period of time. No public or
+private interaction with the people involved, including unsolicited interaction
+with those enforcing the Code of Conduct, is allowed during this period.
+Violating these terms may lead to a permanent ban.
+
+### 4. Permanent Ban
+
+**Community Impact**: Demonstrating a pattern of violation of community
+standards, including sustained inappropriate behavior,  harassment of an
+individual, or aggression toward or disparagement of classes of individuals.
+
+**Consequence**: A permanent ban from any sort of public interaction within
+the community.
+
+## Attribution
+
+This Code of Conduct is adapted from the [Contributor Covenant][homepage],
+version 2.0, available at
+https://www.contributor-covenant.org/version/2/0/code_of_conduct.html.
+
+Community Impact Guidelines were inspired by [Mozilla's code of conduct
+enforcement ladder](https://github.com/mozilla/diversity).
+
+[homepage]: https://www.contributor-covenant.org
+
+For answers to common questions about this code of conduct, see the FAQ at
+https://www.contributor-covenant.org/faq. Translations are available at
+https://www.contributor-covenant.org/translations.

CONTRIBUTING.md

@@ -0,0 +1,15 @@
+# Contributing
+
+Contributions to this project are very welcome!
+
+If you discover a bug or would like better support for a feature, please do the following:
+
+1. Submit an Issue.
+
+   I'm actively developing this project and will review incoming issues.
+1. Check out the source code and submit a PR.
+   
+   If you're facile with Python and understand what you'd like to fix, submit a PR and I'll 
+   review it as soon as I can. There's a `.devcontainer` available so you can creates commits 
+   on this project in a GitHub codespace.
+   

LICENSE

@@ -1,6 +1,6 @@
 MIT License
 
-Copyright (c) 2020 Jamie Hardt
+Copyright (c) 2018-2023 Jamie Hardt
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal

README.md

@@ -1,37 +1,54 @@
-[![Build Status](https://travis-ci.com/iluvcapra/wavinfo.svg?branch=master)](https://travis-ci.com/iluvcapra/wavinfo)
-[![codecov](https://codecov.io/gh/iluvcapra/wavinfo/branch/master/graph/badge.svg)](https://codecov.io/gh/iluvcapra/wavinfo)
-[![Documentation Status](https://readthedocs.org/projects/wavinfo/badge/?version=latest)](https://wavinfo.readthedocs.io/en/latest/?badge=latest) ![](https://img.shields.io/github/license/iluvcapra/wavinfo.svg) ![](https://img.shields.io/pypi/pyversions/wavinfo.svg) [![](https://img.shields.io/pypi/v/wavinfo.svg)](https://pypi.org/project/wavinfo/) ![](https://img.shields.io/pypi/wheel/wavinfo.svg)
+![](https://img.shields.io/pypi/pyversions/wavinfo.svg) [![](https://img.shields.io/pypi/v/wavinfo.svg)](https://pypi.org/project/wavinfo/) ![](https://img.shields.io/pypi/wheel/wavinfo.svg)
+![GitHub last commit](https://img.shields.io/github/last-commit/iluvcapra/wavinfo) [![Documentation Status](https://readthedocs.org/projects/wavinfo/badge/?version=latest)](https://wavinfo.readthedocs.io/en/latest/?badge=latest) ![](https://img.shields.io/github/license/iluvcapra/wavinfo.svg)
 
-<!-- ![Test](https://github.com/iluvcapra/wavinfo/workflows/Upload%20Python%20Package/badge.svg) -->
+[![Tests](https://github.com/iluvcapra/wavinfo/actions/workflows/python-package.yml/badge.svg)](https://github.com/iluvcapra/wavinfo/actions/workflows/python-package.yml)
+[![Ruff](https://github.com/iluvcapra/wavinfo/actions/workflows/python-ruff.yml/badge.svg)](https://github.com/iluvcapra/wavinfo/actions/workflows/python-ruff.yml)
+[![codecov](https://codecov.io/gh/iluvcapra/wavinfo/branch/master/graph/badge.svg?token=9DZQfZENYv)](https://codecov.io/gh/iluvcapra/wavinfo)
 
 # wavinfo
 
-The `wavinfo` package allows you to probe WAVE and [RF64/WAVE files][eburf64] and extract extended metadata, with an emphasis on film, video and professional music production metadata.
+The `wavinfo` package allows you to probe WAVE and [RF64/WAVE files][eburf64] 
+and extract extended metadata. `wavinfo` has an emphasis on film, video and 
+professional music production but can read many other kinds.
+
+If you are trying to read a particular kind of metadata from a WAV file and
+it is not supported, please submit an issue!
+
+
+## Metadata Support
 
 `wavinfo` reads:
 
-* __Broadcast-WAVE__ metadata<sup>[1][ebu]</sup>, including embedded program
-  loudness and coding history, if extant. This also includes the SMPTE UMID<sup>[2][smpte_330m2011]</sup>.
-* __iXML__ production recorder metadata<sup>[3][ixml]</sup>, including project, scene, and take tags, recorder notes
-  and file family information.
-* Most of the common __RIFF INFO__<sup>[4][info-tags]</sup> metadata fields.
-* The __wav format__ is also parsed, so you can access the basic sample rate and channel count
-  information.
+* All defined [Broadcast-WAVE][bext] fields, including embedded program
+  loudness, coding history and [SMPTE UMID][smpte_330m2011].
+* [iXML][ixml] production recorder metadata, including project, scene, and 
+  take tags, recorder notes and file family information.
+  * iXML `STEINBERG` sound library attributes.
+* All known [RIFF INFO][info-tags] metadata fields.
+* [Audio Definition Model (ADM)][adm] track metadata and schema, including 
+  channel, pack formats, 
+  object, content and programme, including [Dolby Digital Plus][ebu3285s6]
+  and Dolby Atmos `dbmd` metadata for re-renders and mixdowns.
+* Wave embedded [cue markers][cues], cue marker labels, notes and timed ranges as used
+  by Zoom, iZotope RX, etc.
+* Wave embedded [sampler][smpl] and sample loop metadata.
+* The [wav format][format] is also parsed, so you can access the basic sample rate 
+  and channel count information.
 
-In progress:
-* ADM metadata consilient with the output of the __Dolby RMU__, perhaps later fully complaint with [ITU BS.2076-2][adm].
-* iXML `STEINBERG` sound library attributes.
-* __NetMix__ library attributes.
-* Pro Tools __embedded regions__.
 
-[ebu]:https://tech.ebu.ch/docs/tech/tech3285.pdf
-[adm]:https://www.itu.int/dms_pubrec/itu-r/rec/bs/R-REC-BS.2076-2-201910-I!!PDF-E.pdf
-[smpte_330m2011]:http://standards.smpte.org/content/978-1-61482-678-1/st-330-2011/SEC1.abstract
-[ixml]:http://www.ixml.info
+[format]:https://wavinfo.readthedocs.io/en/latest/classes.html#wavinfo.wave_reader.WavAudioFormat
+[cues]:https://wavinfo.readthedocs.io/en/latest/scopes/cue.html
+[bext]:https://wavinfo.readthedocs.io/en/latest/scopes/bext.html
+[smpl]:https://wavinfo.readthedocs.io/en/latest/scopes/smpl.html
+[smpte_330m2011]:https://wavinfo.readthedocs.io/en/latest/scopes/bext.html#wavinfo.wave_bext_reader.WavBextReader.umid
+[adm]:https://wavinfo.readthedocs.io/en/latest/scopes/adm.html
+[ebu3285s6]:https://wavinfo.readthedocs.io/en/latest/scopes/dolby.html
+[ixml]:https://wavinfo.readthedocs.io/en/latest/scopes/ixml.html
+[info-tags]:https://wavinfo.readthedocs.io/en/latest/scopes/info.html
 [eburf64]:https://tech.ebu.ch/docs/tech/tech3306v1_1.pdf
-[info-tags]:https://exiftool.org/TagNames/RIFF.html#Info
 
-## Demonstration
+
+## How To Use
 
 The entry point for wavinfo is the WavInfoReader class.
 
@@ -41,6 +58,9 @@ from wavinfo import WavInfoReader
 path = '../tests/test_files/A101_1.WAV'
 
 info = WavInfoReader(path)
+
+adm_metadata = info.adm
+ixml_metadata = info.ixml
 ```
 
 The package also installs a shell command:
@@ -49,21 +69,13 @@ The package also installs a shell command:
 $ wavinfo test_files/A101_1.WAV
 ```
 
-### Basic WAV Data
+## Contributions!
 
-The length of the file in frames (interleaved samples) and bytes is available, as is the contents of the format chunk.
-
-```python
-(info.data.frame_count, info.data.byte_count)
->>> (240239, 1441434)
-(info.fmt.sample_rate, info.fmt.channel_count, info.fmt.block_align, info.fmt.bits_per_sample)
->>> (48000, 2, 6, 24)
-```
-
-## Platform Lifecycle Stuff
-
-Python 3.5 support is deprecated.
+Any new or different kind of metadata you find, or any 
+new or different use of exising metadata you encounter, please submit
+an Issue or Pull Request!
 
 ## Other Resources
 
-* For other file formats and ID3 decoding, look at [audio-metadata](https://github.com/thebigmunch/audio-metadata).
+* For other file formats and ID3 decoding, 
+  look at [audio-metadata](https://github.com/thebigmunch/audio-metadata).

docs/Makefile

@@ -4,7 +4,7 @@
 # You can set these variables from the command line.
 SPHINXOPTS    =
 SPHINXBUILD   = sphinx-build
-SOURCEDIR     = .
+SOURCEDIR     = source
 BUILDDIR      = _build
 
 # Put it first so that "make" without argument is like "make help".
@@ -16,4 +16,4 @@ help:
 # Catch-all target: route all unknown targets to Sphinx using the new
 # "make mode" option.  $(O) is meant as a shortcut for $(SPHINXOPTS).
 %: Makefile
-	@$(SPHINXBUILD) -M $@ "$(SOURCEDIR)" "$(BUILDDIR)" $(SPHINXOPTS) $(O)
+	@$(SPHINXBUILD) -M $@ "$(SOURCEDIR)" "$(BUILDDIR)" $(SPHINXOPTS) $(O)

docs/make.bat

@@ -1,35 +0,0 @@
-@ECHO OFF
-
-pushd %~dp0
-
-REM Command file for Sphinx documentation
-
-if "%SPHINXBUILD%" == "" (
-	set SPHINXBUILD=sphinx-build
-)
-set SOURCEDIR=.
-set BUILDDIR=_build
-
-if "%1" == "" goto help
-
-%SPHINXBUILD% >NUL 2>NUL
-if errorlevel 9009 (
-	echo.
-	echo.The 'sphinx-build' command was not found. Make sure you have Sphinx
-	echo.installed, then set the SPHINXBUILD environment variable to point
-	echo.to the full path of the 'sphinx-build' executable. Alternatively you
-	echo.may add the Sphinx directory to PATH.
-	echo.
-	echo.If you don't have Sphinx installed, grab it from
-	echo.http://sphinx-doc.org/
-	exit /b 1
-)
-
-%SPHINXBUILD% -M %1 %SOURCEDIR% %BUILDDIR% %SPHINXOPTS%
-goto end
-
-:help
-%SPHINXBUILD% -M help %SOURCEDIR% %BUILDDIR% %SPHINXOPTS%
-
-:end
-popd

docs/metadata_scopes/bext.rst

@@ -1,65 +0,0 @@
-Broadcast WAV Extension
-=======================
-
-.. module:: wavinfo
-
-.. autoclass:: wavinfo.wave_bext_reader.WavBextReader
-   :members:
-
-
-Notes
------
-A WAV file produced to Broadcast-WAV specifications will have the broadcast metadata extension,
-which includes a 256-character free text descrption, creating entity identifier (usually the 
-recording application or equipment), the date and time of recording and a time reference for 
-timecode synchronization.
-
-The `coding_history` is designed to contain a record of every conversion performed on the audio
-file.
-
-In this example (from a Sound Devices 702T) the bext metadata contains scene/take slating
-information in the `description`. Here also the `originator_ref` is a serial number conforming
-to EBU Rec 99.
-
-If the bext metadata conforms to EBU 3285 v1, it will contain the WAV's 32 or 64 byte SMPTE 
-330M UMID. The 32-byte version of the UMID is usually just a random number, while the 64-byte 
-UMID will also have information on the recording date and time, recording equipment and entity, 
-and geolocation data.
-
-If the bext metadata conforms to EBU 3285 v2, it will hold precomputed program loudness values
-as described by EBU Rec 128.
-
-..  code:: python
-
-    print(info.bext.description)
-    print("----------")
-    print("Originator:", info.bext.originator)
-    print("Originator Ref:", info.bext.originator_ref)
-    print("Originator Date:", info.bext.originator_date)
-    print("Originator Time:", info.bext.originator_time)
-    print("Time Reference:", info.bext.time_reference)
-    print(info.bext.coding_history)
-
-Result: 
-
-::
-
-    sSPEED=023.976-ND
-    sTAKE=1
-    sUBITS=$12311801
-    sSWVER=2.67
-    sPROJECT=BMH
-    sSCENE=A101
-    sFILENAME=A101_1.WAV
-    sTAPE=18Y12M31
-    sTRK1=MKH516 A
-    sTRK2=Boom
-    sNOTE=
-    
-    ----------
-    Originator: Sound Dev: 702T S#GR1112089007
-    Originator Ref: USSDVGR1112089007124001008206301
-    Originator Date: 2018-12-31
-    Originator Time: 12:40:00
-    Time Reference: 2190940753
-    A=PCM,F=48000,W=24,M=stereo,R=48000,T=2 Ch

docs/source/classes.rst

@@ -0,0 +1,10 @@
+Other wavinfo Classes
+=====================
+
+
+.. autoclass:: wavinfo.wave_reader.WavAudioFormat
+   :members:
+
+.. autoclass:: wavinfo.wave_reader.WavDataDescriptor
+   :members:
+

docs/source/command_line.rst

@@ -0,0 +1,140 @@
+Using `wavinfo` from the Command Line
+=====================================
+
+`wavinfo` installs a command-line entry point that will read wav files
+from the command line and output metadata to stdout.
+
+.. code-block:: shell
+
+    $ wavinfo [[-i] | [--ixml | --adm]] INFILE +
+
+
+Options
+-------
+
+By default, `wavinfo` will output a JSON dictionary for each file argument.
+
+``-i`` 
+    `wavinfo` will run in `interactive mode`_.
+
+Two option flags will change the behavior of the command in non-interactive 
+mode:
+
+``--ixml``
+    The *\-\-ixml* flag will cause `wavinfo` to output the iXML metadata
+    payload of each input wave file, or will emit an error message to stderr if
+    iXML metadata is not present.
+
+``--adm``
+    The *\-\-adm* flag will cause `wavinfo` to output the ADM XML metadata 
+    payload of each input wave file, or will emit an error message to stderr if
+    ADM XML metadata is not present.
+
+These options are mutually-exclusive, with `\-\-adm` taking precedence. The 
+``--ixml`` and ``--adm`` flags futher take precedence over ``-i``.
+
+
+Interactive Mode 
+-----------------
+
+In interactive mode, `wavinfo` will present a command prompt which allows you
+to query the files provided on the command line and explore the metadata tree 
+interactively. Each file on the command line is scanned and presented as a 
+tree of metadata records.
+
+Commands include:
+
+``ls``
+    List the available metadata keys at the current level.
+
+``cd``
+    Traverse to a metadata key in the current level (or enter `..` to go up 
+    to the prevvious level).
+
+``bye``
+    Exit to the shell.
+
+Type `help` or `?` at the prompt to get a full list of commands.
+
+
+Example Output
+--------------
+
+.. attention::
+
+   Metadata fields containing binary data, such as the Broadcast-WAV UMID, will 
+   be included in the JSON output as a base-64 encoded string, preceded by the
+   marker "base64:".
+
+.. code-block:: javascript
+
+  {
+  "filename": "../tests/test_files/nuendo/wavinfo Test Project - Audio - 1OA.wav",
+  "run_date": "2024-11-25T10:26:11.280053",
+  "application": "wavinfo 3.0.0",
+  "scopes": {
+    "fmt": {
+      "audio_format": 65534,
+      "channel_count": 4,
+      "sample_rate": 48000,
+      "byte_rate": 576000,
+      "block_align": 12,
+      "bits_per_sample": 24
+    },
+    "data": {
+      "byte_count": 576000,
+      "frame_count": 48000
+    },
+    "ixml": {
+      "track_list": [
+        {
+          "channel_index": "1",
+          "interleave_index": "1",
+          "name": "",
+          "function": "ACN0-FOA"
+        },
+        {
+          "channel_index": "2",
+          "interleave_index": "2",
+          "name": "",
+          "function": "ACN1-FOA"
+        },
+        {
+          "channel_index": "3",
+          "interleave_index": "3",
+          "name": "",
+          "function": "ACN2-FOA"
+        },
+        {
+          "channel_index": "4",
+          "interleave_index": "4",
+          "name": "",
+          "function": "ACN3-FOA"
+        }
+      ],
+      "project": "wavinfo Test Project",
+      "scene": null,
+      "take": null,
+      "tape": null,
+      "family_uid": "E5DDE719B9484A758162FF7B652383A3",
+      "family_name": null
+    },
+    "bext": {
+      "description": "wavinfo Test Project Nuendo output",
+      "originator": "Nuendo",
+      "originator_ref": "USJPHNNNNNNNNN202829RRRRRRRRR",
+      "originator_date": "2022-12-02",
+      "originator_time": "10:21:06",
+      "time_reference": 172800000,
+      "version": 2,
+      "umid": "base64:k/zr4qE4RiaXyd/fO7GuCwAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA==",
+      "coding_history": "A=PCM,F=48000,W=24,T=Nuendo\r\n",
+      "loudness_value": 327.67,
+      "loudness_range": 327.67,
+      "max_true_peak": 327.67,
+      "max_momentary_loudness": 327.67,
+      "max_shortterm_loudness": 327.67
+    }
+  }
+}
+

docs/source/conf.py

@@ -12,21 +12,25 @@
 # add these directories to sys.path here. If the directory is relative to the
 # documentation root, use os.path.abspath to make it absolute, like shown here.
 #
+import importlib
 import os
 import sys
-sys.path.insert(0, os.path.abspath('..'))
+sys.path.insert(0, os.path.abspath('../..'))
+sys.path.insert(0, os.path.abspath("../../.."))
+print(sys.path)
 
+import importlib
 
 # -- Project information -----------------------------------------------------
 
 project = u'wavinfo'
-copyright = u'2019, Jamie Hardt'
+copyright = u'2018-2024, Jamie Hardt'
 author = u'Jamie Hardt'
 
 # The short X.Y version
-version = u''
+version = "3.1"
 # The full version, including alpha/beta/rc tags
-release = u'v1.1'
+release = importlib.metadata.version("wavinfo")
 
 
 # -- General configuration ---------------------------------------------------
@@ -61,7 +65,7 @@ master_doc = 'index'
 #
 # This is also used if you do content translation via gettext catalogs.
 # Usually you set "language" from the command line for these cases.
-language = None
+language = 'en'
 
 # List of patterns, relative to source directory, that match files and
 # directories to ignore when looking for source files.

docs/source/index.rst

@@ -6,30 +6,21 @@
 Welcome to wavinfo's documentation!
 ===================================
 
-
-.. module:: wavinfo
-
-.. autoclass:: WavInfoReader
-   :members:
-
-   .. automethod:: __init__
-   
-
-.. autoclass:: wavinfo.wave_reader.WavAudioFormat
-   :members:
-
-.. autoclass:: wavinfo.wave_reader.WavDataDescriptor
-   :members:
+The `wavinfo` package allows you to probe WAVE and RF64/WAVE files and 
+extract extended metadata, with an emphasis on film, video and professional 
+music production metadata.
 
 
 .. toctree::
-   :maxdepth: 2
-   :caption: Notes:
+   :maxdepth: 1
+   :glob:
+   :numbered:
    
-   metadata_scopes/bext.rst
-   metadata_scopes/ixml.rst
-   metadata_scopes/info.rst
-
+   quickstart
+   command_line
+   scopes/*
+   classes
+   references
 
 
 Indices and tables

docs/source/quickstart.rst

@@ -0,0 +1,30 @@
+wavinfo Quickstart
+====================
+
+All metadata is read by an instance of :class:`WaveInfoReader<wavinfo.wave_reader.WavInfoReader>`.
+Each type of metadata, iXML, Broadcast-WAV etc. is accessible through *scopes*, properties on an 
+instance of :class:`WaveInfoReader`. 
+
+
+.. code-block:: python
+    :caption: Using wavinfo
+
+    import wavinfo
+
+    path = 'path/to/your/wave/audio.wav'
+
+    info = wavinfo.WavInfoReader(path)
+    
+    adm_metadata = info.adm
+    ixml_metadata = info.ixml
+   
+WavInfoReader Class Documentation
+--------------------------------------
+
+.. module:: wavinfo
+    :noindex:
+
+.. autoclass:: wavinfo.wave_reader.WavInfoReader
+   :members:
+   :special-members: __init__
+

docs/source/references.rst

@@ -0,0 +1,48 @@
+References
+==========
+
+A complete list of technical references and commentary is available as a man page
+and is installed as wavinfo(7) when you install `wavinfo` via pip.
+
+Wave File Format
+----------------
+
+* `ITU Recommendation BS.2088-1-2019 — Long-form file format for the international exchange of audio programme materials with metadata <https://www.itu.int/dms_pubrec/itu-r/rec/bs/R-REC-BS.2088-1-201910-I!!PDF-E.pdf>`_
+* `IETF Network Working Group RFC2361 — WAVE and AVI Codec Registries <https://www.rfc-editor.org/rfc/rfc2361>`_
+
+Broadcast Wave Format
+---------------------
+
+* `EBU Tech 3285 — Specification of the Broadcast Wave Format (BWF) <https://tech.ebu.ch/docs/tech/tech3285.pdf>`_
+* `EBU Tech 3306 — MBWF / RF64: An extended File Format for Audio <https://tech.ebu.ch/docs/tech/tech3306v1_1.pdf>`_
+* `SMPTE ST 330-2011 — Unique Material Identifier <https://ieeexplore.ieee.org/document/9787389>`_
+
+Audio Definition Model
+----------------------
+
+* `ITU Recommendation BS.2076-2-2019 — Audio definition model <https://www.itu.int/dms_pubrec/itu-r/rec/bs/R-REC-BS.2076-2-201910-I!!PDF-E.pdf>`_
+* `EBU Tech 3285 Supplement 5 — <axml> Chunk <https://tech.ebu.ch/docs/tech/tech3285s5.pdf>`_
+* `EBU ADM Guidelines <https://adm.ebu.io>`_
+
+Dolby
+-----
+
+* `EBU Tech 3285 Supplement 6 — Dolby Metadata <https://tech.ebu.ch/docs/tech/tech3285s6.pdf>`_
+* `Dolby Laboratories Atmos ADM Profile <https://developer.dolby.com/globalassets/documentation/technology/dolby_atmos_master_adm_profile_v1.0.pdf>`_
+
+iXML
+----
+
+* `Gallery Software iXML Specification <http://www.gallery.co.uk/ixml/>`_
+
+
+Sampler Metadata
+----------------
+
+* `RecordingBlogs.com — Sample chunk (of a Wave file) <https://www.recordingblogs.com/wiki/sample-chunk-of-a-wave-file>`_
+
+RIFF Metadata
+-------------
+* `1991. Multimedia Programming Interface and Data Specifications 1.0 <https://www.aelius.com/njh/wavemetatools/doc/riffmci.pdf>`_
+* `Exiftool Documentation <https://exiftool.org/TagNames/RIFF.html#Info_docs>`_
+

docs/source/scopes/adm.rst

@@ -0,0 +1,30 @@
+ADM (Audio Definition Model) Metadata
+=====================================
+
+Notes
+-----
+
+`ADM metadata`_ is used in master recordings to describe the format and content 
+of the tracks. In practice on wave files, ADM tells a client which tracks are 
+members of multichannel stems or "beds" and their speaker assignment, and which 
+tracks are freely-positioned 3D objects. ADM also records the panning moves on
+object tracks and their content group ("Dialogue", "Music", "Effects" etc.)
+
+ADM wave files created with a Dolby Rendering and Mastering Unit are a common 
+deliverable in feature film and television production. The `Dolby Atmos ADM Profile`_ 
+describes how the RMU translates its native Master format into ADM. 
+ 
+
+.. _ADM metadata: https://adm.ebu.io
+.. _Dolby Atmos ADM Profile: https://developer.dolby.com/globalassets/documentation/technology/dolby_atmos_master_adm_profile_v1.0.pdf
+
+Class Reference
+---------------
+
+.. module:: wavinfo
+
+.. autoclass:: wavinfo.wave_adm_reader.WavADMReader
+    :members:
+
+.. autoclass:: wavinfo.wave_adm_reader.ChannelEntry
+    :members:

docs/source/scopes/bext.rst

@@ -0,0 +1,88 @@
+Broadcast WAV Extension Metadata
+================================
+
+
+Notes
+-----
+A WAV file produced to Broadcast-WAV specifications will have the broadcast
+metadata extension, which includes a 256-character free text descrption,
+creating entity identifier (usually the recording application or equipment),
+the date and time of recording and a time reference for timecode
+synchronization.
+
+The :py:attr:`coding_history<wavinfo.wave_bext_reader.WavBextReader.coding_history>` 
+is designed to contain a record of every conversion performed on the audio file.
+
+In this example (from a Sound Devices 702T) the bext metadata contains
+scene/take slating information in the
+:py:attr:`description<wavinfo.wave_bext_reader.WavBextReader.description>`. 
+Here also the
+:py:attr:`originator_ref<wavinfo.wave_bext_reader.WavBextReader.originator_ref>`
+is a serial number conforming to EBU Rec 99.
+
+If the bext metadata conforms to `EBU 3285 v1`_, it will contain the WAV's 32
+or 64 byte `SMPTE ST 330 UMID`_. The 32-byte version of the UMID is usually
+just a random number, while the 64-byte UMID will also have information on the
+recording date and time, recording equipment and entity, and geolocation data.
+
+If the bext metadata conforms to `EBU 3285 v2`_, it will hold precomputed
+program loudness values as described by `EBU Rec 128`_.
+
+.. _EBU 3285 v1: https://tech.ebu.ch/publications/tech3285s1
+.. _SMPTE ST 330 UMID: https://standards.globalspec.com/std/1396751/smpte-st-330
+.. _EBU 3285 v2: https://tech.ebu.ch/publications/tech3285s2
+.. _EBU Rec 128: https://tech.ebu.ch/publications/r128
+
+
+.. note::
+   All text fields in the Broadcast-WAV metadata structure are decoded by 
+   default as flat ASCII. To override this and use a different encoding, pass
+   an string encoding name to the ``bext_encoding`` parameter of
+   :py:meth:`WavInfoReader()<wavinfo.wave_reader.WavInfoReader.__init__>`
+
+
+Example
+-------
+..  code:: python
+
+    print(info.bext.description)
+    print("----------")
+    print("Originator:", info.bext.originator)
+    print("Originator Ref:", info.bext.originator_ref)
+    print("Originator Date:", info.bext.originator_date)
+    print("Originator Time:", info.bext.originator_time)
+    print("Time Reference:", info.bext.time_reference)
+    print(info.bext.coding_history)
+
+Result: 
+
+::
+
+    sSPEED=023.976-ND
+    sTAKE=1
+    sUBITS=$12311801
+    sSWVER=2.67
+    sPROJECT=BMH
+    sSCENE=A101
+    sFILENAME=A101_1.WAV
+    sTAPE=18Y12M31
+    sTRK1=MKH516 A
+    sTRK2=Boom
+    sNOTE=
+    
+    ----------
+    Originator: Sound Dev: 702T S#GR1112089007
+    Originator Ref: USSDVGR1112089007124001008206301
+    Originator Date: 2018-12-31
+    Originator Time: 12:40:00
+    Time Reference: 2190940753
+    A=PCM,F=48000,W=24,M=stereo,R=48000,T=2 Ch
+
+
+Class Reference
+---------------
+
+.. autoclass:: wavinfo.wave_bext_reader.WavBextReader
+   :members:
+
+

docs/source/scopes/cue.rst

@@ -0,0 +1,40 @@
+Cue Marker and Range Metadata
+------------------------------
+
+Notes
+=====
+
+Cue metadata stores timed markers that clients use to mark times of interest
+in a wave file, and optionally give them a name and longer comment. Markers 
+can also have an associated length, allowing ranges of times in a file to be 
+marked.
+
+String Encoding of Cue Metadata
+"""""""""""""""""""""""""""""""
+
+Cue labels and notes will be decoded using the string encoding passed to
+:py:meth:`WavInfoReader's<wavinfo.wave_reader.WaveInfoReader.__init__>`
+``info_encoding=`` parameter, which by default is ``latin_1`` (ISO 8859-1).
+
+Text associated with ``ltxt`` time ranges may specify their own encoding in 
+the form of a Windows codepage number. `wavinfo` will attempt to use the
+encoding specified.
+
+.. note::
+   ``cset`` character set/locale metadata is not supported. If it is present
+   in the file it will be ignored by `wavinfo`.
+
+Class Reference
+===============
+
+.. autoclass:: wavinfo.wave_cues_reader.WavCuesReader
+   :members:
+
+.. autoclass:: wavinfo.wave_cues_reader.CueEntry
+   :members:
+
+.. autoclass:: wavinfo.wave_cues_reader.LabelEntry
+   :members:
+
+.. autoclass:: wavinfo.wave_cues_reader.NoteEntry
+   :members:

docs/source/scopes/dolby.rst

@@ -0,0 +1,21 @@
+Dolby Metadata
+==============
+
+Notes
+-----
+
+Dolby software and equipment creates detailed hinting metadata that can help
+receiving applications decide how to present the audio content, particularly
+how it should be downmixed, and dialogue normalization settings. 
+
+
+Class Reference
+---------------
+
+.. automodule:: wavinfo.wave_dbmd_reader
+
+.. autoclass:: wavinfo.wave_dbmd_reader.WavDolbyMetadataReader
+    :members:
+
+.. autoclass:: wavinfo.wave_dbmd_reader.DolbyDigitalPlusMetadata
+    :members:

docs/source/scopes/info.rst

@@ -1,14 +1,6 @@
 INFO Metadata
 =============
 
-
-.. module:: wavinfo
-
-.. autoclass:: wavinfo.wave_info_reader.WavInfoChunkReader
-   :members:
-
-
-
 Notes
 -----
 
@@ -28,5 +20,23 @@ music library software.
     print("INFO Comment:",   bullet.info.comment)
 
 
+String Encoding of INFO Metadata
+""""""""""""""""""""""""""""""""
+
+Info metadata fields will be decoded using the string encoding passed to
+:py:meth:`WavInfoReader's<wavinfo.wave_reader.WaveInfoReader.__init__>`
+``info_encoding=`` parameter, which by default is ``latin_1`` (ISO 8859-1).
+
+.. note::
+   ``cset`` character set/locale metadata is not supported. If it is present
+   in the file it will be ignored by `wavinfo`.
+
+Class Reference
+---------------
+
+.. autoclass:: wavinfo.wave_info_reader.WavInfoChunkReader
+   :members:
+
+
 
 

docs/source/scopes/ixml.rst

@@ -1,13 +1,6 @@
 iXML Production Recorder Metadata
 =================================
 
-
-.. module:: wavinfo
-
-.. autoclass:: wavinfo.wave_ixml_reader.WavIXMLFormat
-   :members:
-
-
 Notes
 -----
 iXML allows an XML document to be embedded in a WAV file.
@@ -41,4 +34,15 @@ Result:
     iXML File Family UID: USSDVGR1112089007124001008206300
 
 
+Class Reference
+---------------
+
+.. autoclass:: wavinfo.wave_ixml_reader.WavIXMLFormat
+   :members:
+
+Steinberg-Specific iXML Metadata
+--------------------------------
+
+.. autoclass:: wavinfo.wave_ixml_reader.SteinbergMetadata
+   :members:
 

docs/source/scopes/smpl.rst

@@ -0,0 +1,14 @@
+
+Sampler Metadata
+=================
+
+Class Reference
+---------------
+
+.. automodule:: wavinfo.wave_smpl_reader
+
+.. autoclass:: wavinfo.wave_smpl_reader.WavSmplReader
+    :members:
+
+.. autoclass:: wavinfo.wave_smpl_reader.WaveSmplLoop
+    :members:

examples/demo.ipynb

@@ -6,7 +6,16 @@
    "source": [
     "# `wavinfo` Demonstration\n",
     "\n",
-    "The entry point for wavinfo is the WavInfoReader class."
+    "The `wavinfo` module allows you to read most of the metadata formats that are available for WAV files."
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "## Opening a WAV file for reading metadata\n",
+    "\n",
+    "The entry point for wavinfo is the `WavInfoReader` class:"
    ]
   },
   {
@@ -26,7 +35,36 @@
    "cell_type": "markdown",
    "metadata": {},
    "source": [
-    "## Basic WAV Data\n",
+    "Once you have a `WavInfoReader`, you can access different metadata systems or \"scopes.\"\n",
+    "\n",
+    "The scopes that are presently supported are: \n",
+    "  * `fmt`: sample format, sample rate, bit depth, block alignment, etc.\n",
+    "  * `data`: data chunk description, bytes length and frames length.\n",
+    "  * `ixml`: Gallery Software's iXML metadata, used by production sound recorder equipment and DAWs.\n",
+    "  * `bext`: Broacast-WAV metadata as used by DAWs.\n",
+    "  * `info`: title, artist and description metadata tags, among other items.\n",
+    "  * `adm`: EBU Audio Defintion Model metadata, as used by Dolby Atmos.\n",
+    "  * `cues`: Cue marker metadata, including labels and notes \n",
+    "  * `dolby`: Dolby recorder and playback metadata\n",
+    "  * `smpl`: Sampler midi note and loop metadata\n",
+    "\n",
+    "Each of these is an attribute of a `WavInfoReader` object.\n",
+    "\n",
+    "Each scope corresponds to a vendor-defined metadata system. Many scopes directly represent a specific file *chunk*, like `fmt` or `ixml`, and some may involve data read from many chunks. Examples of this would include `cues` or `adm`.\n"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "## Metadata Scopes"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "### `data` and `fmt`: Basic WAV Data\n",
     "\n",
     "The length of the file in frames (interleaved samples) and bytes is available, as is the contents of the format chunk."
    ]
@@ -51,6 +89,13 @@
     "(info.data.frame_count, info.data.byte_count)"
    ]
   },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "The `fmt` scope allows the client to read metadata from the WAVE format description."
+   ]
+  },
   {
    "cell_type": "code",
    "execution_count": 3,
@@ -75,7 +120,9 @@
    "cell_type": "markdown",
    "metadata": {},
    "source": [
-    "## Broadcast WAV Extension"
+    "### `bext`: Broadcast WAV Extension\n",
+    "\n",
+    "The `bext` scope allows the client to access Broadcast-WAV metadata. "
    ]
   },
   {
@@ -87,17 +134,17 @@
      "name": "stdout",
      "output_type": "stream",
      "text": [
-      "sSPEED=023.976-ND\r\n",
-      "sTAKE=1\r\n",
-      "sUBITS=$12311801\r\n",
-      "sSWVER=2.67\r\n",
-      "sPROJECT=BMH\r\n",
-      "sSCENE=A101\r\n",
-      "sFILENAME=A101_1.WAV\r\n",
-      "sTAPE=18Y12M31\r\n",
-      "sTRK1=MKH516 A\r\n",
-      "sTRK2=Boom\r\n",
-      "sNOTE=\r\n",
+      "sSPEED=023.976-ND\n",
+      "sTAKE=1\n",
+      "sUBITS=$12311801\n",
+      "sSWVER=2.67\n",
+      "sPROJECT=BMH\n",
+      "sSCENE=A101\n",
+      "sFILENAME=A101_1.WAV\n",
+      "sTAPE=18Y12M31\n",
+      "sTRK1=MKH516 A\n",
+      "sTRK2=Boom\n",
+      "sNOTE=\n",
       "\n",
       "----------\n",
       "Originator: Sound Dev: 702T S#GR1112089007\n",
@@ -105,7 +152,7 @@
       "Originator Date: 2018-12-31\n",
       "Originator Time: 12:40:00\n",
       "Time Reference: 2190940753\n",
-      "A=PCM,F=48000,W=24,M=stereo,R=48000,T=2 Ch\r\n",
+      "A=PCM,F=48000,W=24,M=stereo,R=48000,T=2 Ch\n",
       "\n"
      ]
     }
@@ -125,7 +172,7 @@
    "cell_type": "markdown",
    "metadata": {},
    "source": [
-    "## iXML Production Recorder Metadata"
+    "### `ixml`: iXML Production Recorder Metadata"
    ]
   },
   {
@@ -156,11 +203,83 @@
    ]
   },
   {
-   "cell_type": "code",
-   "execution_count": null,
+   "cell_type": "markdown",
    "metadata": {},
-   "outputs": [],
-   "source": []
+   "source": [
+    "### `cues`: Cues Metadata\n",
+    "\n",
+    "Cue time markers are accessible through the `cues` scope. The `each_cue` method returns an iterator that yields a tuple of each cue \"name\" or integer UID, and sample location. "
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 6,
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "Cue ID: 1\n",
+      "Cue Offset: 29616\n",
+      "Cue ID: 2\n",
+      "Cue Offset: 74592\n",
+      "Cue ID: 3\n",
+      "Cue Offset: 121200\n"
+     ]
+    }
+   ],
+   "source": [
+    "path = \"../tests/test_files/cue_chunks/STE-000.wav\"\n",
+    "info = WavInfoReader(path)\n",
+    "\n",
+    "for cue in info.cues.each_cue():\n",
+    "    print(f\"Cue ID: {cue[0]}\")\n",
+    "    print(f\"Cue Offset: {cue[1]}\")"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "There is also a convenience method to get the appropriate label and note for a given marker. (Note here also `WavInfoReader`'s facility for overriding default text encodings.)"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 7,
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "Cue ID: 1\n",
+      "    Label: Marker 1\n",
+      "    At: 1000\n",
+      "    Note: <NO NOTE>\n",
+      "Cue ID: 2\n",
+      "    Label: Marker 2\n",
+      "    At: 5000\n",
+      "    Note: Marker Comment 1\n",
+      "Cue ID: 3\n",
+      "    Label: Marker 3\n",
+      "    At: 10000\n",
+      "    Note: Лорем ипсум долор сит амет, тимеам вивендум хас ет, цу адолесценс дефинитионес еам.\n"
+     ]
+    }
+   ],
+   "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",
+    "\n",
+    "for cue in info.cues.each_cue():\n",
+    "    print(f\"Cue ID: {cue[0]}\")\n",
+    "    label, note = info.cues.label_and_note(cue[0])\n",
+    "    print(f\"    Label: {label}\")\n",
+    "    print(f\"    At: {cue[1]}\")\n",
+    "    print(f\"    Note: {note or '<NO NOTE>'}\")"
+   ]
   },
   {
    "cell_type": "code",
@@ -172,7 +291,7 @@
  ],
  "metadata": {
   "kernelspec": {
-   "display_name": "Python 3",
+   "display_name": "Python 3 (ipykernel)",
    "language": "python",
    "name": "python3"
   },
@@ -186,9 +305,9 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.7.2"
+   "version": "3.12.5"
   }
  },
  "nbformat": 4,
- "nbformat_minor": 2
+ "nbformat_minor": 4
 }

examples/wavinfo.ipynb

@@ -1,215 +0,0 @@
-{
- "cells": [
-  {
-   "cell_type": "code",
-   "execution_count": 1,
-   "metadata": {},
-   "outputs": [],
-   "source": [
-    "import wavinfo\n",
-    "import pprint"
-   ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": 2,
-   "metadata": {},
-   "outputs": [],
-   "source": [
-    "pp = pprint.PrettyPrinter(indent=4)"
-   ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": 3,
-   "metadata": {},
-   "outputs": [],
-   "source": [
-    "path = '../tests/test_files/protools/PT A101_4.A1.wav'\n",
-    "\n",
-    "info = wavinfo.WavInfoReader(path)"
-   ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": 4,
-   "metadata": {
-    "scrolled": true
-   },
-   "outputs": [
-    {
-     "name": "stdout",
-     "output_type": "stream",
-     "text": [
-      "[   ChunkDescriptor(ident=b'bext', start=20, length=858),\n",
-      "    ChunkDescriptor(ident=b'iXML', start=886, length=5226),\n",
-      "    ChunkDescriptor(ident=b'fmt ', start=6120, length=16),\n",
-      "    ChunkDescriptor(ident=b'data', start=6144, length=864840),\n",
-      "    ChunkDescriptor(ident=b'umid', start=870992, length=24),\n",
-      "    ChunkDescriptor(ident=b'minf', start=871024, length=16),\n",
-      "    ChunkDescriptor(ident=b'regn', start=871048, length=92)]\n"
-     ]
-    }
-   ],
-   "source": [
-    "import wavinfo.wave_parser\n",
-    "\n",
-    "with open(path,'rb') as f:\n",
-    "    chunk_tree = wavinfo.wave_parser.parse_chunk(f)\n",
-    "\n",
-    "pp.pprint(chunk_tree.children)"
-   ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": 5,
-   "metadata": {},
-   "outputs": [
-    {
-     "name": "stdout",
-     "output_type": "stream",
-     "text": [
-      "b'\\x00\\x00\\x00\\x00\\x00\\x00\\x00*\\xfd\\xf5\\x0c$\\xe4s\\x80\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x00'\n",
-      "000000000000002afdf50c24e47380000000000000000000\n",
-      "24\n"
-     ]
-    }
-   ],
-   "source": [
-    "with open(path,'rb') as f:\n",
-    "    f.seek( chunk_tree.children[4].start )\n",
-    "    umid_bin = f.read(chunk_tree.children[4].length)\n",
-    "    f.seek( chunk_tree.children[6].start )\n",
-    "    regn_bin = f.read(chunk_tree.children[6].length)\n",
-    "    \n",
-    "print(umid_bin)\n",
-    "print(umid_bin.hex())\n",
-    "print(len(umid_bin))"
-   ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": 6,
-   "metadata": {},
-   "outputs": [
-    {
-     "name": "stdout",
-     "output_type": "stream",
-     "text": [
-      "<wavinfo.wave_bext_reader.WavBextReader object at 0x10d5f8ac8>\n"
-     ]
-    }
-   ],
-   "source": [
-    "print(info.bext)"
-   ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": 7,
-   "metadata": {},
-   "outputs": [
-    {
-     "name": "stdout",
-     "output_type": "stream",
-     "text": [
-      "b'\\x01\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x00*\\xfd\\xf5\\x0c$\\xe4s\\x80\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x0c3\\x02\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x00T\\xd5\\xa2\\x82\\x00\\x00\\x00\\x00\\x10PT A101_4.A1.wavGK\\xaa\\xaf\\x7f\\x00\\x00@ }\\x06\\x00`\\x00\\x00'\n",
-      "01000000000000000000002afdf50c24e473800000000000000000000c330200000000000000000000000000000000000000000054d5a2820000000010505420413130315f342e41312e776176474baaaf7f000040207d0600600000\n",
-      "92\n"
-     ]
-    }
-   ],
-   "source": [
-    "\n",
-    "print(regn_bin)\n",
-    "print(regn_bin.hex())\n",
-    "print(len(regn_bin))"
-   ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": 8,
-   "metadata": {},
-   "outputs": [
-    {
-     "name": "stdout",
-     "output_type": "stream",
-     "text": [
-      "{   'artist': 'Frank Bry',\n",
-      "    'comment': 'BULLET Impact Plastic LCD TV Screen Shatter Debris 2x',\n",
-      "    'copyright': '2018 Creative Sound Design, LLC (The Recordist Christmas '\n",
-      "                 '2018) www.therecordist.com',\n",
-      "    'created_date': '2018-11-15',\n",
-      "    'engineer': None,\n",
-      "    'genre': 'Bullets',\n",
-      "    'keywords': None,\n",
-      "    'product': 'The Recordist Christmas 2018',\n",
-      "    'software': 'Soundminer',\n",
-      "    'source': None,\n",
-      "    'tape': None,\n",
-      "    'title': None}\n",
-      "{   'coding_history': '',\n",
-      "    'description': 'BULLET Impact Plastic LCD TV Screen Shatter Debris 2x',\n",
-      "    'loudness_range': None,\n",
-      "    'loudness_value': None,\n",
-      "    'max_momentary_loudness': None,\n",
-      "    'max_shortterm_loudness': None,\n",
-      "    'max_true_peak': None,\n",
-      "    'originator': 'TheRecordist',\n",
-      "    'originator_date': '2018-12-20',\n",
-      "    'originator_ref': 'aaiAKt3fCGTk',\n",
-      "    'originator_time': '12:15:37',\n",
-      "    'time_reference': 57882,\n",
-      "    'version': 0}\n"
-     ]
-    }
-   ],
-   "source": [
-    "path = '../tests/test_files/BULLET Impact Plastic LCD TV Screen Shatter Debris 2x.wav'\n",
-    "\n",
-    "info = wavinfo.WavInfoReader(path)\n",
-    "\n",
-    "with open(path,'rb') as f:\n",
-    "    chunk_tree = wavinfo.wave_parser.parse_chunk(f)\n",
-    "    \n",
-    "pp.pprint(info.info.to_dict())\n",
-    "pp.pprint(info.bext.to_dict())"
-   ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": null,
-   "metadata": {},
-   "outputs": [],
-   "source": []
-  },
-  {
-   "cell_type": "code",
-   "execution_count": null,
-   "metadata": {},
-   "outputs": [],
-   "source": []
-  }
- ],
- "metadata": {
-  "kernelspec": {
-   "display_name": "Python 3",
-   "language": "python",
-   "name": "python3"
-  },
-  "language_info": {
-   "codemirror_mode": {
-    "name": "ipython",
-    "version": 3
-   },
-   "file_extension": ".py",
-   "mimetype": "text/x-python",
-   "name": "python",
-   "nbconvert_exporter": "python",
-   "pygments_lexer": "ipython3",
-   "version": "3.7.2"
-  }
- },
- "nbformat": 4,
- "nbformat_minor": 2
-}

pyproject.toml

@@ -0,0 +1,72 @@
+[build-system]
+requires = ["uv_build>=0.8.18,<0.9.0"]
+build-backend = "uv_build"
+
+[project]
+name = "wavinfo"
+version = "3.1.1"
+description = "Probe WAVE files for all metadata"
+authors = [{ name = "Jamie Hardt", email = "jamiehardt@me.com"}]
+license = "MIT" 
+readme = "README.md"
+requires-python = ">=3.8"
+classifiers = [
+    'Development Status :: 5 - Production/Stable',
+    'License :: OSI Approved :: MIT License',
+    'Topic :: Multimedia',
+    'Topic :: Multimedia :: Sound/Audio',
+    "Programming Language :: Python :: 3.9",
+    "Programming Language :: Python :: 3.10",
+    "Programming Language :: Python :: 3.11",
+    "Programming Language :: Python :: 3.12",
+    "Programming Language :: Python :: 3.13",
+    "Programming Language :: Python :: 3.14"
+]
+homepage = "https://github.com/iluvcapra/wavinfo"
+repository = "https://github.com/iluvcapra/wavinfo.git"
+documentation = "https://wavinfo.readthedocs.io/"
+urls.Tracker = 'https://github.com/iluvcapra/wavinfo/issues' 
+keywords = [
+    'waveform', 
+    'metadata', 
+    'audio', 
+    'ebu', 
+    'smpte', 
+    'avi', 
+    'library', 
+    'film', 
+    'broadcast' 
+]
+
+dependencies = [
+    "lxml>=6.0.2",
+]
+
+[dependency-groups]
+dev = [
+    "pytest>=8.3.5",
+    "ruff>=0.14.0",
+]
+doc = [
+    "sphinx>=7.1.2",
+    "sphinx-rtd-theme>=3.0.2",
+]
+
+[project.scripts]
+wavinfo = "wavinfo:__main__.main"
+
+[tool.pyright]
+typeCheckingMode = "basic"
+
+[tool.pylint]
+max-line-length = 88
+disable = [
+    "C0103", # (invalid-name)
+    "C0114", # (missing-module-docstring)
+    "C0115", # (missing-class-docstring)
+    "C0116", # (missing-function-docstring)
+    "R0903", # (too-few-public-methods)
+    "R0913", # (too-many-arguments)
+    "W0105", # (pointless-string-statement)
+]
+

requirements.txt

@@ -1,3 +0,0 @@
-lxml~=4.5.2
-setuptools~=49.6.0
-ear~=2.0.0

setup.py

@@ -1,41 +0,0 @@
-from setuptools import setup
-from wavinfo import __author__, __license__, __version__
-
-with open("README.md", "r") as fh:
-    long_description = fh.read()
-
-setup(name='wavinfo',
-      version=__version__,
-      author=__author__,
-      author_email='jamiehardt@me.com',
-      description='Probe WAVE Files for iXML, Broadcast-WAVE and other metadata.',
-      long_description_content_type="text/markdown",
-      long_description=long_description,
-      license=__license__,
-      url='https://github.com/iluvcapra/wavinfo',
-      project_urls={
-          'Source':
-              'https://github.com/iluvcapra/wavinfo',
-          'Documentation':
-              'https://wavinfo.readthedocs.io/',
-          'Issues':
-              'https://github.com/iluvcapra/wavinfo/issues',
-      },
-      packages=['wavinfo'],
-      classifiers=['Development Status :: 5 - Production/Stable',
-          'License :: OSI Approved :: MIT License',
-          'Topic :: Multimedia',
-          'Topic :: Multimedia :: Sound/Audio',
-#           "Programming Language :: Python :: 3.5",
-          "Programming Language :: Python :: 3.6",
-          "Programming Language :: Python :: 3.7",
-          "Programming Language :: Python :: 3.8",
-          "Programming Language :: Python :: 3.9"],
-      keywords='waveform metadata audio ebu smpte avi library film tv editing editorial',
-      install_requires=['lxml', 'ear'],
-      entry_points={
-          'console_scripts': [
-              'wavinfo = wavinfo.__main__:main'
-          ]
-      }
-      )

src/wavinfo/__init__.py

@@ -0,0 +1,9 @@
+"""
+Probe WAVE Files for iXML, Broadcast-WAVE and other metadata.
+"""
+
+__all__ = ['WavInfoReader', 'WavInfoEOFError']
+
+from .wave_reader import WavInfoReader
+from .riff_parser import WavInfoEOFError
+

src/wavinfo/__main__.py

@@ -0,0 +1,210 @@
+from . import WavInfoReader
+
+import datetime
+from optparse import OptionParser
+import sys
+import os
+import json
+from enum import Enum
+import importlib.metadata
+from base64 import b64encode
+from cmd import Cmd
+from shlex import split
+from typing import List, Dict, Union
+
+
+class MyJSONEncoder(json.JSONEncoder):
+    def default(self, o):
+        if isinstance(o, Enum):
+            return o._name_
+        elif isinstance(o, bytes):
+            return 'base64:' + b64encode(o).decode('ascii')
+        else:
+            return super().default(o)
+
+
+class MissingDataError(RuntimeError):
+    pass
+
+
+class MetaBrowser(Cmd):
+    prompt = "(wavinfo) "
+
+    metadata: Union[List, Dict]
+    path: List[str] = []
+
+    @property
+    def cwd(self):
+        root: List | Dict = self.metadata
+        for key in self.path:
+            if isinstance(root, list):
+                root = root[int(key)]
+            else:
+                root = root[key]
+
+        return root
+
+    @staticmethod
+    def print_value(collection, key):
+        val = collection[key]
+        if isinstance(val, int):
+            print(f" - {key}: {val}")
+        elif isinstance(val, str):
+            print(f" - {key}: \"{val}\"")
+        elif isinstance(val, dict):
+            print(f" - {key}: Dict ({len(val)} keys)")
+        elif isinstance(val, list):
+            print(f" - {key}: List ({len(val)} keys)")
+        elif isinstance(val, bytes):
+            print(f" - {key}: ({len(val)} bytes)")
+        elif val is None:
+            print(f" - {key}: (NO VALUE)")
+        else:
+            print(f" - {key}: Unknown")
+
+    def do_ls(self, _):
+        'List items at the current node: LS'
+        root = self.cwd
+
+        if isinstance(root, list):
+            print("List:")
+            for i in range(len(root)):
+                self.print_value(root, i)
+
+        elif isinstance(root, dict):
+            print("Dictionary:")
+            for key in root:
+                self.print_value(root, key)
+
+        else:
+            print("Cannot print node, is not a list or dictionary.")
+
+    def do_cd(self, args):
+        'Switch to a different node: CD node-name | ".."'
+        argv = split(args)
+        if argv[0] == "..":
+            self.path = self.path[0:-1]
+        else:
+            if isinstance(self.cwd, list):
+                if int(argv[0]) < len(self.cwd):
+                    self.path = self.path + [argv[0]]
+                else:
+                    print(f"Index {argv[0]} does not exist")
+            elif isinstance(self.cwd, dict):
+                if argv[0] in self.cwd.keys():
+                    self.path = self.path + [argv[0]]
+                else:
+                    print(f"Key \"{argv[0]}\" does not exist")
+
+        if len(self.path) > 0:
+            self.prompt = "(" + "/".join(self.path) + ") "
+        else:
+            self.prompt = "(wavinfo) "
+
+    def do_bye(self, _):
+        'Exit the interactive browser: BYE'
+        return True
+
+
+def main():
+    version = importlib.metadata.version('wavinfo')
+    manpath = os.path.dirname(__file__) + "/man"
+    parser = OptionParser()
+
+    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('--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('-i',
+                      help='Read metadata with an interactive prompt',
+                      default=False,
+                      action='store_true')
+
+    (options, args) = parser.parse_args(sys.argv)
+
+    interactive_dict = []
+
+    # if options.install_manpages:
+    #     print("Installing manpages...")
+    #     print(f"Docfiles at {__file__}")
+    #     return
+
+    if options.man:
+        import shlex
+        print("Which man page?")
+        print("1) wavinfo usage")
+        print("7) General info on Wave file metadata")
+        m = input("?> ")
+
+        args = ["man", "-M", manpath, "1", "wavinfo"]
+        if m.startswith("7"):
+            args[3] = "7"
+
+        os.system(shlex.join(args))
+        return
+
+    for arg in args[1:]:
+        try:
+            this_file = WavInfoReader(path=arg)
+            if options.adm:
+                if this_file.adm:
+                    sys.stdout.write(this_file.adm.xml_str())
+                else:
+                    raise MissingDataError("adm")
+            elif options.ixml:
+                if this_file.ixml:
+                    sys.stdout.write(this_file.ixml.xml_str())
+                else:
+                    raise MissingDataError("ixml")
+            else:
+                ret_dict = {
+                    '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] = {}
+
+                    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)
+
+        except MissingDataError as e:
+            print("MissingDataError: Missing metadata (%s) in file %s" %
+                  (e, arg), file=sys.stderr)
+            continue
+        except Exception as e:
+            raise e
+
+        if len(interactive_dict) > 0:
+            cli = MetaBrowser()
+            cli.metadata = interactive_dict
+            cli.cmdloop()
+
+
+if __name__ == "__main__":
+    main()

src/wavinfo/man/man1/wavinfo.1

@@ -0,0 +1,79 @@
+.TH wavinfo 1 "2023-11-07" "Jamie Hardt" "User Manuals"
+.SH NAME 
+wavinfo \- probe wave files for metadata
+.SH SYNOPSIS
+.SY wavinfo
+.I "[\-i]"
+.I "[\-\-adm]"
+.I "[\-\-ixml]"
+.I FILE ...
+.SH DESCRIPTION
+.B wavinfo 
+extracts embedded metadata from WAVE and RF64/WAVE sound files, with an
+emphasis on film, video and professional music production metadata.
+.SH OPTIONS
+.IP "(no options)"
+With no options, 
+.B wavinfo 
+will emit a JSON (Javascript Object Notation) object containing all 
+detected metadata.
+.IP "\-\-adm"
+Output Audio Definition Model (ADM) XML metadata in 
+.BR FILE .
+.IP "\-\-ixml"
+Output any iXML metdata in 
+.BR FILE .
+.IP "\-h, \-\-help"
+Print brief help.
+.IP "\-i"
+Enter 
+.I "interactive mode"
+and browse metadata in FILE with an interactive command prompt.
+.SH DETAILED DESCRIPTION
+.B wavinfo 
+collects metadata according to different 
+.IR scopes .
+.SS METADATA SCOPES
+.IP fmt
+Basic audio properties: sample format, sample rate, channel count, etc.
+.IP data
+Size and frame count of the WAVE file's 
+.I data 
+segment.
+.IP cues
+Timed cue points, labels, notes and time ranges.
+.IP bext 
+Broadcast-WAV metadata: description, originator, date and time, UMID.
+.IP ixml 
+A selection of parsed iXML fields: track list, project, scene, take, tape,
+family name, family uid. For the full iXML document use the 
+.IR \-\-ixml 
+command option.
+.IP adm 
+EBU Audio Definition Model (ADM) metadata: Programme, channels. For the full 
+ADM 
+.I <axml>
+document use the 
+.IR \-\-adm 
+command option.
+.IP dolby
+Dolby bitstream and Atmos metadata.
+.IP info 
+INFO metadata fields: IART (artist), ICMT (comment), etc.
+.SH EXIT STATUS
+.IP 0
+On user quit.
+.SH AUTHOR
+Jamie Hardt 
+.UR https://github.com/iluvcapra
+.UE
+.SH BUGS
+Issue submissions, feature requests, pull requests and other contributions 
+are welcome and should be directed at 
+.BR wavinfo 's
+home page on GitHub:
+.RS 4
+.UR https://github.com/iluvcapra/wavinfo 
+.UE
+.\" .SH SEE ALSO
+.\" .BR "ffmpeg" "(1),"

src/wavinfo/man/man7/wavinfo.7

@@ -0,0 +1,380 @@
+.TH waveinfo 7 "2024-07-10" "Jamie Hardt" "Miscellaneous Information Manuals"
+.SH NAME 
+wavinfo \- WAVE file metadata
+.SH SYNOPSIS
+Everything you ever wanted to know about WAVE metadata but were afraid to ask. 
+.SH DESCRIPTION 
+.PP
+The WAVE file format is forwards-compatible. Apart from audio data, it can 
+hold arbitrary blocks of bytes which clients will automatically ignore 
+unless they recognize them and know how to read them.
+.PP
+Without saying too much about the structure and parsing of WAVE files 
+themselves \- a subject beyond the scope of this document \- WAVE files are 
+divided into segments or 
+.BR chunks ,
+which a client parser can either read or skip without reading. Chunks have 
+an identifier, or signature: a four-character-code that tells a client what
+kind of chunk it is, and a length. Based on this information, a client can look
+at the identifier and decide if it knows how to read a chunk and if it wants
+to. If it doesn't, it can simply read the length and skip past it.
+.PP
+Some chunks are mandated by the Microsoft standard, specifically
+.I fmt 
+and
+.I data
+in the case of PCM-encoded WAVE files. Other chunks, like 
+.I cue
+or
+.IR bext ,
+are optional, and optional chunks usually hold metadata. 
+.PP
+Chunks can also nest inside other chunks, a special identifier 
+.I LIST 
+is used to indicate these. A WAVE file is a recursive list: a top level 
+list of chunks, where chunks may contain a list of chunks themselves.
+.SS Order and Arrangement of Metadata Chunks in a WAVE File
+.PP
+Chunks in a WAVE file can appear in any order, and a capable parser can accept
+them appearing in any order. However, authorities give guidance on where chunks
+should be placed when creating a new WAVE file.
+.PP
+.IP 1)
+For all new WAVE files, clients should always place an empty chunk, a
+so-called
+.I JUNK
+chunk, in the first position in the top-level list of a WAVE file, and
+it should be sized large enough to hold a 
+.I ds64
+chunk record. This will allow clients to upgrade the file to a RF64
+WAVE file 
+.BR in-place ,
+without having to re-write the file or audio data.
+.IP 2)
+Older authorites recommend placing metadata before the audio data, so clients
+reading the file sequentially will hit it before having to seek through the
+audio. This may improve metadata read performance on certain architectures.
+.IP 3)
+Older authorities also recommend inserting 
+.I JUNK
+before the 
+.I data 
+chunk, sized so that the first byte of the
+.I data
+payload lands immediately at 0x1000 (4096), because this was a common factor of
+the page boundaries of many operating systems and architectures. This may
+optimize the audio I/O performance in certain situations. 
+.IP 4)
+Modern implementations (we're looking at 
+.B Pro Tools
+here) tend to place the Broadcast-WAVE
+.I bext
+metadata before the data, followed by the data itself, and then other data
+after that.
+.\" .PP
+.\" Clients reading WAVE files should be tolerant and accept any configuration of
+.\" chunks, and should accept any file as long as the obligatory
+.\" .I fmt
+.\" and 
+.\" .I data
+.\" chunks
+.\" are present. 
+.PP
+It's not unheard-of to see a naive implementor expect 
+.B only
+.I fmt 
+and 
+.I data 
+chunks, in this order, and to hard-code the offsets of the short
+.I fmt
+chunk and 
+.I data
+chunk into their program, and this is something that should always be checked
+when evaluating a new tool, just to make sure the developer didn't do this.
+Many coding examples and WAVE file explainers from the 90s and early aughts
+give the basic layout of a WAVE file, and naive devs go along with it.
+.SS Encoding and Decoding Text Metadata
+.\" .PP
+.\" Modern metadata systems, anything developed since the late aughts, will defer
+.\" encoding to an XML parser, so when dealing with
+.\" .I ixml 
+.\" or
+.\" .I axml
+.\" so a client can mostly ignore this problem.
+.\" .PP
+.\" The most established metadata systems are older than this though, and so the
+.\" entire weight of text encoding history falls upon the client.
+.\" .PP
+.\" The original WAVE specification, a part of the Microsoft/IBM Multimedia
+.\" interface of 1991, was written at a time when Windows was an ascendant and
+.\" soon-to-be dominant desktop environment. Audio files were almost 
+.\" never shared via LANs or the Internet or any other way. When audio files were
+.\" shared, among the miniscule number of people who did this, it was via BBS or
+.\" Usenet. Users at this time may have ripped them from CDs, but the cost of hard
+.\" drives and low quality of compressed formats at the time made this little more
+.\" than a curiosity. There was no CDBaby or CDDB to download and populate metadata
+.\" from at this time.
+.\" .PP
+.\" So, the 
+.\" .I INFO
+.\" and 
+.\" .I cue
+.\" metadata systems, which are by far the most prevalent and supported, were
+.\" published two years before the so-called "Endless September" of 1993 when the
+.\" Internet became mainstream, when Unicode was still a twinkle in the eye, and
+.\" two years before Ariana Grande was born.   
+.PP
+The safest assumption, and the mandate of the Microsoft, is that all text
+metadata, by default, be encoded in Windows codepage 819, a.k.a. ISO Latin
+alphabet 1, or ISO 8859-1. This covers most Western European scripts but
+excludes all of Asia, Russia, most of the European Near East, the Middle
+East.
+.PP 
+To account for this, Microsoft proposed a few conventions, none of which have 
+been adopted with any consistency among clients of the WAVE file standard.
+.IP 1)
+The RIFF standard defines a 
+.I cset 
+chunk which declares a Windows codepage for character encoding, along with a 
+native country code, language and dialect, which clients should use for
+determining text information. We have never seen a WAVE
+file with a 
+.I cest 
+chunk.
+.IP 2)
+Certain RIFF chunks allow the writing client to override the default encoding.
+Relevant to audio files are the 
+.I ltxt 
+chunk, which encodes a country, language, dialect and codepage along with a
+time range text note. We have never seen the text field on one of these 
+filled-out either.
+.PP 
+Some clients, in our experience, simply write UTF-8 into 
+.IR cue ,
+.IR labl ,
+and
+.I note 
+fields without any kind of framing.
+.PP 
+A practical solution is to assume either ISO Latin 1, Windows CP 859 or Windows
+CP 1252, and allow the client or user to override this based on its own
+inferences. The 
+.I chardet 
+python package may provide useable guesses for text encoding, YMMV.
+.SH CHUNK MENAGERIE
+A list of chunks that you may find in a wave file from our experience.
+.SS Essential WAV Chunks 
+.IP fmt 
+Defines the format of the audio in the 
+.I data 
+chunk: the audio codec, the sample rate, bit depth, channel count, block
+alignment and other data. May take an "extended" form, with additional data
+(such as channel speaker assignments) if there are more than two channels in
+the file or if it is a compressed format.
+.IP data 
+The audio data itself. PCM audio data is always stored as interleaved samples.
+.SS Optional WAVE Chunks
+.IP JUNK 
+A region of the file not currently in use. Clients sometimes add these before
+the 
+.I data
+chunk in order to align the beginning of the audio data with a memory page 
+boundary (this can make memory-mapped reads from a wave file a little more 
+efficient). A 
+.I JUNK 
+chunk is often placed at the beginning of a WAVE file to reserve space for 
+a 
+.I ds64 
+chunk that will be written to the file at the end of recording, in the event 
+that after the file is finalized, it exceeds the RIFF size limit. Thus a WAVE 
+file can be upgraded in-place to an RF64 without re-writing the audio data.
+.IP fact 
+Fact chunks record the number of samples in the decoded audio stream. It's only
+present in WAVE files that contain compressed audio.
+.IP "LIST or list"
+(Both have been seen) Not a chunk type itself but signals to a RIFF parser that 
+this chunk contains chunks itself. A LIST chunk's payload will begin with a 
+four-character code identifying the form of the list, and is then followed
+by chunks of the standard key-length-data form, which may themselves be 
+LISTs that themselves contain child chunks. WAVE files don't tend to have a 
+very deep heirarchy of chunks, compared to AVI files.
+.SS RIFF Metadata 
+The RIFF container format has a metadata system common to all RIFF files, WAVE
+being the most common at present, AVI being another very common format
+historically.
+.IP "LIST form INFO"
+A flat list of chunks, each containing text metadata. The role
+of the string, like "Artist", "Composer", "Comment", "Engineer" etc. are given
+by the four-character code: "Artist" is 
+.IR IART , 
+Composer is 
+.IR ICMP , 
+engineer is 
+.IR IENG , 
+Comment is 
+.IR ICMT ,
+etc.
+.IP cue
+A binary list of cues, which are timed points within the audio data.
+.IP "LIST form adtl"
+Contains text labels 
+.RI ( labl )
+for the cues in the 
+.I cue 
+chunk, "notes" 
+.RI ( note ,
+which are structurally identical to 
+.I labl 
+but hosts tend to use notes for longer text), and "length text"
+.I ltxt 
+metadata records, which can give a cue a length, making it a range, and a text 
+field that defines its own encoding.
+.IP cset
+Defines the character set for all text fields in 
+.IR INFO ,  
+.I adtl 
+and other RIFF-defined text fields. By default, all of the text in RIFF 
+metadata fields is Windows Latin 1/ISO 8859-1, though as time passes many 
+clients have simply taken to sticking UTF-8 into these fields. The 
+.I cset 
+cannot represent UTF-8 as a valid option for text encoding, it only speaks 
+Windows codepages, and we've never seen one in a WAVE file in any event, and 
+it's unlikely an audio app would recognize one if it saw it.
+.SS Broadcast-WAVE Metadata
+Broadcast-WAVE is a set of extensions to WAVE files to facilitate media 
+production maintained by the EBU.
+.IP bext
+A multi-field structure containing mostly fixed-width text data capturing
+essential production information: a 256 character free description field,
+originator name and a unique reference, recording date and time, a frame-based
+timestamp for sample-accurate recording time, and a coding history record. The
+extended form of the structure can hold a SMPTE UMID (a kind of UUID, which 
+may also contain timestamp and geolocation data) and pre-computed program 
+loudness measurements. 
+.IP peak
+A binary data structure containing the peak envelope for the audio data, for 
+use by clients to generate a waveform overview.
+.SS Audio Definition Model Metadata
+Audio Definition Model (ADM) metadata is a metadata standard for audio 
+broadcast and distribution maintained by the ITU.
+.IP chna
+A binary list that associates individual channels in the file to entities
+in the ADM XML document stored in the 
+.I axml 
+chunk. A 
+.I chna 
+chunk will always appear with an 
+.I axml
+chunk and vice versa.
+.IP axml
+Contains an XML document with Audio Definition Model metadata. ADM metadata 
+describes the program the WAVE file belongs to, role, channel assignment,
+and encoding properties of individual channels in the WAVE file, and if the 
+WAVE file contains object-based audio, it will also give all of the positioning
+and panning automation envelopes.
+.IP bxml 
+This is defined by the ITU as a gzip-compressed version of the 
+.I axml 
+chunk.
+.IP sxml 
+This is a hybrid binary/gzip-compressed-XML chunk that associates ADM 
+documents with timed ranges of a WAVE file.
+.SS Dolby Metadata
+Dolby metadata is present in Dolby Atmos master ADM WAVE files.
+.IP dbmd 
+Records hints for Dolby playback applications for downmixing, level 
+normalization and other things.
+.SS Proprietary Chunks 
+.IP ovwf 
+.B (Pro Tools)
+Pre-computed waveform overview data.
+.IP regn 
+.B (Pro Tools)
+Region and cue point metadata.
+.SS Chunks of Unknown Purpose
+.IP elm1 
+.IP minf 
+.IP umid
+.SH REFERENCES
+(Note: We're not including URLs in this list, the title and standard number 
+should be sufficient to find almost all of these documents. The ITU, EBU and 
+IETF standards documents are freely-available.)
+.SS Essential File Format
+.TP  
+.B Multimedia Programming Interface and Data Specifications 1.0. Microsoft Corporation, 1991.
+The original definition of the 
+.I RIFF 
+container, the 
+.I WAVE 
+form, the original metadata facilites (like 
+.IR INFO " and " cue ),
+and things like language, country and
+dialect enumerations. This document also contains descriptions of certain
+variations on the WAVE, such as 
+.I LIST wavl
+and compressed WAVE files that are so rare in practice as to be virtually
+non-existent.
+.TP 
+.B ITU Recommendation BS.2088-1-2019 \- Long-form file format for the international exchange of audio programme mterials with metadata. ITU 2019.
+Formalized the RF64 file format, ADM carrier chunks like 
+.IR axml 
+and 
+.IR chna .
+Formally supercedes the previous standard for RF64, 
+.BR "EBU 3306 v1" .
+One oddity with this standard is it defines the file header for an extended 
+WAVE file to be 
+.IR BW64 ,
+but this is never seen in practice.
+.TP 
+.B RFC 2361 \- WAVE and AVI Codec Registries. IETF Network Working Group, 1998.
+Gives an exhaustive list of all of the codecs that Microsoft had assigned to
+vendor WAVE files as of 1998. At the time, numerous hardware vendors, sound
+card and chip manufacturers, sound software developers and others all provided
+their own slightly-different adaptive PCM codecs, linear predictive compression
+codes, DCTs and other things, and Microsoft would issue these vendors WAVE
+codec magic numbers. Almost all of these are no longer in use, the only ones
+one ever encounters in the modern era are integer PCM (0x01), floating-point
+PCM (0x03) and the extended format marker (0xFFFFFFFF). There are over a
+hundred codecs assigned, however, a roll-call of failed software and hardware
+brands.
+.SS Broadcast WAVE Format
+.TP 
+.B EBU Tech 3285 \- Specification of the Broadcast Wave Format (BWF). EBU, 2011.
+Defines the elements of a Broadcast WAVE file, the 
+.I bext 
+metadata chunk structure, allowed sample formats and other things. Over the 
+years the EBU has published numerous supplements covering extensions to the 
+format, such as embedding SMPTE UMIDs, pre-calculated loudness data (EBU Tech 
+3285 v2), 
+.I peak 
+waveform overview data (Suppl. 3), ADM metadata (Suppl. 5 and 7), Dolby master 
+metadata (Suppl. 6), and other things.
+.TP 
+.B SMPTE 330M-2011 \- Unique Material Identifier. SMPTE, 2011.
+Describes the format of the SMPTE UMID field, a 32- or 64-byte UUID used to 
+identify media files. UMIDs are usually a dumb number in their 32-byte form, 
+but the extended form can encode a high-precision timestamp (with options for 
+epoch and timescale) and geolocation information. Broadcast-WAVE files 
+conforming to 
+.B "EBU 3285 v2"
+have a SMPTE UMID embedded in the 
+.I bext 
+chunk.
+.SS Audio Definition Model 
+.TP 
+.B ITU Recommendation BS.2076-2-2019 \- Audio definition model. ITU, 2019.
+Defines the Audio Definition Model, entities, relationships and properties. If
+you ever had any questions about how ADM works, this is where you would start.
+.SS iXML Metadata 
+.TP 
+.B iXML Specification v3.01. Gallery Software, 2021.
+iXML is a standard for embedding mostly human-created metadata into WAVE files,
+and mostly with an emphasis on location sound recorders used on film and 
+television productions. Frustratingly the developer has never published a DTD 
+or schema validation or strict formal standard, and encourages vendors to just
+do whatever, but most of the heavily-traveled metadata fields are standardized,
+for recording information like a recording's scene, take, recording notes,
+circled or alt status. iXML also has a system of 
+.B "families"
+for associating several WAVE files together into one recording.

src/wavinfo/rf64_parser.py

@@ -0,0 +1,47 @@
+import struct
+# from collections import namedtuple
+from typing import NamedTuple, Dict
+
+from . import riff_parser
+
+
+class RF64Context(NamedTuple):
+    sample_count: int
+    bigchunk_table: Dict[str, int]
+
+
+def parse_rf64(stream, signature=b'RF64') -> RF64Context:
+    start = stream.tell()
+    assert stream.read(4) == b'WAVE'
+
+    ds64_chunk = riff_parser.parse_chunk(stream)
+    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'
+
+    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)
+        bigchunk_table[bigname] = bigsize
+
+    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)

src/wavinfo/riff_parser.py

@@ -1,7 +1,7 @@
-
+# from optparse import Option
 import struct
-from collections import namedtuple
-from .rf64_parser import parse_rf64
+from .rf64_parser import parse_rf64, RF64Context
+from typing import NamedTuple, Union, List, Optional
 
 
 class WavInfoEOFError(EOFError):
@@ -10,23 +10,18 @@ class WavInfoEOFError(EOFError):
         self.chunk_start = chunk_start
 
 
-class ListChunkDescriptor(namedtuple('ListChunkDescriptor', 'signature children')):
-    pass
-    # def find(self, chunk_path):
-    #     if len(chunk_path) > 1:
-    #         for chunk in self.children:
-    #             if type(chunk) is ListChunkDescriptor and \
-    #                     chunk.signature is chunk_path[0]:
-    #                 return chunk.find(chunk_path[1:])
-    #     else:
-    #         for chunk in self.children:
-    #             if type(chunk) is ChunkDescriptor and \
-    #                     chunk.ident is chunk_path[0]:
-    #                 return chunk
+class ListChunkDescriptor(NamedTuple):
+    signature: bytes
+    children: List[Union['ChunkDescriptor', 'ListChunkDescriptor']]
 
 
-class ChunkDescriptor(namedtuple('ChunkDescriptor', 'ident start length rf64_context')):
-    def read_data(self, from_stream):
+class ChunkDescriptor(NamedTuple):
+    ident: bytes
+    start: int
+    length: int
+    rf64_context: Optional[RF64Context]
+
+    def read_data(self, from_stream) -> bytes:
         from_stream.seek(self.start)
         return from_stream.read(self.length)
 
@@ -59,15 +54,23 @@ def parse_chunk(stream, rf64_context=None):
         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, \
+            "Sentinel data size 0xFFFFFFFF found outside of RF64 context"
+
         data_size = rf64_context.bigchunk_table[ident]
 
     displacement = data_size
     if displacement % 2:
         displacement += 1
 
-    if ident in {b'RIFF', b'LIST', b'RF64', b'BW64'}:
-        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/umid_parser.py

@@ -0,0 +1,121 @@
+# from functools import reduce
+
+
+# def binary_to_string(binary_value):
+#     return reduce(lambda val, el: val + "{:02x}".format(el),
+#                   binary_value, '')
+
+# class UMIDParser:
+#     """
+#     Parse a raw binary SMPTE 330M Universal Materials Identifier
+#
+#     This implementation is based on SMPTE ST 330:2011
+#     """
+#     def __init__(self, raw_umid: bytes):
+#         self.raw_umid = raw_umid
+#
+# @property
+# def universal_label(self) -> bytearray:
+#     return self.raw_umid[0:12]
+#
+# @property
+# def basic_umid(self):
+#     return self.raw_umid[0:32]
+
+# def basic_umid_to_str(self):
+#     return binary_to_string(self.raw_umid[0:32])
+#
+# @property
+# def universal_label_is_valid(self) -> bool:
+#     valid_preamble = b'\x06\x0a\x2b\x34\x01\x01\x01\x05\x01\x01'
+#     return self.universal_label[0:len(valid_preamble)] == valid_preamble
+#
+# @property
+# def material_type(self) -> str:
+#     material_byte = self.raw_umid[10]
+#     if material_byte == 0x1:
+#         return 'picture'
+#     elif material_byte == 0x2:
+#         return 'audio'
+#     elif material_byte == 0x3:
+#         return 'data'
+#     elif material_byte == 0x4:
+#         return 'other'
+#     elif material_byte == 0x5:
+#         return 'picture_single_component'
+#     elif material_byte == 0x6:
+#         return 'picture_multiple_component'
+#     elif material_byte == 0x7:
+#         return 'audio_single_component'
+#     elif material_byte == 0x9:
+#         return 'audio_multiple_component'
+#     elif material_byte == 0xb:
+#         return 'auxiliary_single_component'
+#     elif material_byte == 0xc:
+#         return 'auxiliary_multiple_component'
+#     elif material_byte == 0xd:
+#         return 'mixed_components'
+#     elif material_byte == 0xf:
+#         return 'not_identified'
+#     else:
+#         return 'not_recognized'
+#
+# @property
+# def material_number_creation_method(self) -> str:
+#     method_byte = self.raw_umid[11]
+#     method_byte = (method_byte << 4) & 0xf
+#     if method_byte == 0x0:
+#         return 'undefined'
+#     elif method_byte == 0x1:
+#         return 'smpte'
+#     elif method_byte == 0x2:
+#         return 'uuid'
+#     elif method_byte == 0x3:
+#         return 'masked'
+#     elif method_byte == 0x4:
+#         return 'ieee1394'
+#     elif 0x5 <= method_byte <= 0x7:
+#         return 'reserved_undefined'
+#     else:
+#         return 'unrecognized'
+#
+# @property
+# def instance_number_creation_method(self) -> str:
+#     method_byte = self.raw_umid[11]
+#     method_byte = method_byte & 0xf
+#     if method_byte == 0x0:
+#         return 'undefined'
+#     elif method_byte == 0x01:
+#         return 'local_registration'
+#     elif method_byte == 0x02:
+#         return '24_bit_prs'
+#     elif method_byte == 0x03:
+#         return 'copy_number_and_16_bit_prs'
+#     elif 0x04 <= method_byte <= 0x0e:
+#         return 'reserved_undefined'
+#     elif method_byte == 0x0f:
+#         return 'live_stream'
+#     else:
+#         return 'unrecognized'
+#
+# @property
+# def indicated_length(self) -> str:
+#     if self.raw_umid[12] == 0x13:
+#         return 'basic'
+#     elif self.raw_umid[12] == 0x33:
+#         return 'extended'
+#
+# @property
+# def instance_number(self) -> bytearray:
+#     return self.raw_umid[13:3]
+#
+# @property
+# def material_number(self) -> bytearray:
+#     return self.raw_umid[16:16]
+#
+# @property
+# def source_pack(self) -> Union[bytearray, None]:
+#     if self.indicated_length == 'extended':
+#         return self.raw_umid[32:32]
+#     else:
+#         return None

src/wavinfo/wave_adm_reader.py

@@ -0,0 +1,189 @@
+"""
+ADM Reader
+"""
+
+from struct import unpack, unpack_from, calcsize
+from io import BytesIO
+from collections import namedtuple
+from typing import Optional
+
+from lxml import etree as ET
+
+
+ChannelEntry = namedtuple('ChannelEntry', "track_index uid track_ref pack_ref")
+
+
+class WavADMReader:
+    """
+    Reads XML data from an EBU ADM (Audio Definiton Model) WAV File.
+
+    """
+
+    def __init__(self, axml_data: bytes, chna_data: bytes):
+        header_fmt = "<HH"
+        uid_fmt = "<H12s14s11sx"
+
+        #: An :mod:`lxml.etree` of the ADM XML document
+        self.axml = ET.parse(BytesIO(axml_data))
+
+        _, uid_count = unpack(header_fmt, chna_data[0:4])
+
+        self.channel_uids = []
+
+        offset = calcsize(header_fmt)
+        for _ in range(uid_count):
+
+            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')
+                             )
+            )
+
+            offset += calcsize(uid_fmt)
+
+    def xml_str(self) -> str:
+        """ADM XML as a string"""
+        return ET.tostring(self.axml).decode("utf-8")
+
+    def programme(self) -> dict:
+        """
+        Read the ADM `audioProgramme` data structure and some of its reference
+        properties.
+        """
+        ret_dict = dict()
+
+        nsmap = self.axml.getroot().nsmap
+
+        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'] = []
+
+        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'] = []
+
+            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)
+                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
+                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)
+
+            ret_dict['contents'].append(content_dict)
+
+        return ret_dict
+
+    def track_info(self, index) -> Optional[dict]:
+        """
+        Information about a track in the WAV file.
+
+        :param index: index of audio track (indexed from zero)
+        :returns: a dictionary with *content_name*, *content_id*,
+            *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)
+
+        if channel_info is None:
+            return None
+
+        ret_dict = {}
+
+        nsmap = self.axml.getroot().nsmap
+
+        afext = self.axml.find(".//audioFormatExtended",
+                               namespaces=nsmap)
+
+        trackformat_elem = afext.find(
+            "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)
+        channelformat_id = channelformatref_elem.text
+
+        packformatref_elem = afext.find(
+            ("audioStreamFormat[@audioStreamFormatID='%s']"
+             "/audioPackFormatIDRef") % stream_id,
+            namespaces=nsmap)
+        packformat_id = packformatref_elem.text
+
+        channelformat_elem = afext\
+            .find("audioChannelFormat[@audioChannelFormatID='%s']"
+                  % channelformat_id,
+                  namespaces=nsmap)
+        ret_dict['channel_format_name'] = channelformat_elem.get(
+            "audioChannelFormatName")
+
+        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")
+
+        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
+
+        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")
+
+        return ret_dict
+
+    def to_dict(self) -> dict:  # FIXME should be "asdict"
+        """
+        Get ADM metadata as a dictionary.
+        """
+
+        def make_entry(channel_uid_rec):
+            rd = channel_uid_rec._asdict()
+            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())

src/wavinfo/wave_bext_reader.py

@@ -1,6 +1,7 @@
 import struct
-import binascii
-from .umid_parser import UMIDParser
+# from .umid_parser import UMIDParser
+
+from typing import Optional
 
 
 class WavBextReader:
@@ -8,52 +9,69 @@ class WavBextReader:
         """
         Read Broadcast-WAV extended metadata.
         :param bext_data: The bytes-like data.
-        :param encoding: The encoding to use when decoding the text fields of the
-                 BEXT metadata scope. According to EBU Rec 3285 this shall be ASCII.
+        :param encoding: The encoding to use when decoding the text fields of
+            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):
-            first_null = next((index for index, byte in enumerate(b) if byte == 0), None)
+        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)
             trimmed = b if first_null is None else b[:first_null]
             decoded = trimmed.decode(encoding)
             return decoded
 
         #: Description. A free-text field up to 256 characters long.
-        self.description = sanitize_bytes(unpacked[0])
+        self.description: str = sanitize_bytes(unpacked[0])
+
         #: Originator. Usually the name of the encoding application, sometimes
-        #: a artist name.
-        self.originator = sanitize_bytes(unpacked[1])
+        #: an artist name.
+        self.originator: str = sanitize_bytes(unpacked[1])
+
         #: A unique identifier for the file, a serial number.
-        self.originator_ref = sanitize_bytes(unpacked[2])
-        #: Date of the recording, in the format YYY-MM-DD
-        self.originator_date = sanitize_bytes(unpacked[3])
+        self.originator_ref: str = sanitize_bytes(unpacked[2])
+
+        #: Date of the recording, in the format YYYY-MM-DD.
+        self.originator_date: str = sanitize_bytes(unpacked[3])
+
         #: Time of the recording, in the format HH:MM:SS.
-        self.originator_time = sanitize_bytes(unpacked[4])
-        #: The sample offset of the start of the file relative to an
-        #: epoch, usually midnight the day of the recording. 
-        self.time_reference = unpacked[5]
+        self.originator_time: str = sanitize_bytes(unpacked[4])
+
+        #: The sample offset of the start, usually relative
+        #: to midnight.
+        self.time_reference: int = unpacked[5]
+
         #: A variable-length text field containing a list of processes and
         #: and conversions performed on the file.
-        self.coding_history = sanitize_bytes(bext_data[rest_starts:])
-        #: BEXT version. 
-        self.version = unpacked[6]
-        #: SMPTE 330M UMID of this audio file, 64 bytes are allocated though the UMID
-        #: may only be 32 bytes long.
-        self.umid = None
+        self.coding_history: str = sanitize_bytes(bext_data[rest_starts:])
+
+        #: BEXT version.
+        self.version: int = unpacked[6]
+
+        #: SMPTE 330M UMID of this audio file, 64 bytes are allocated though
+        #: the UMID may only be 32 bytes long.
+        self.umid: Optional[bytes] = None
+
         #: EBU R128 Integrated loudness, in LUFS.
-        self.loudness_value = None
-        #: EBU R128 Loudness rante, in LUFS.
-        self.loudness_range = None
+        self.loudness_value: Optional[float] = None
+
+        #: EBU R128 Loudness range, in LUFS.
+        self.loudness_range: Optional[float] = None
+
         #: True peak level, in dBFS TP
-        self.max_true_peak = None
+        self.max_true_peak: Optional[float] = None
+
         #: EBU R128 Maximum momentary loudness, in LUFS
-        self.max_momentary_loudness = None
+        self.max_momentary_loudness: Optional[float] = None
+
         #: EBU R128 Maximum short-term loudness, in LUFS.
-        self.max_shortterm_loudness = None
+        self.max_shortterm_loudness: Optional[float] = None
 
         if self.version > 0:
             self.umid = unpacked[7]
@@ -66,11 +84,12 @@ class WavBextReader:
             self.max_shortterm_loudness = unpacked[12] / 100.0
 
     def to_dict(self):
-        if self.umid is not None:
-            umid_parsed = UMIDParser(self.umid)
-            umid_str = umid_parsed.basic_umid_to_str()
-        else:
-            umid_str = None
+        # if self.umid is not None:
+        #     umid_parsed = UMIDParser(self.umid)
+        #     umid_str = umid_parsed.basic_umid_to_str()
+        # else:
+
+        # umid_str = None
 
         return {'description': self.description,
                 'originator': self.originator,
@@ -79,7 +98,7 @@ class WavBextReader:
                 'originator_time': self.originator_time,
                 'time_reference': self.time_reference,
                 'version': self.version,
-                'umid': umid_str,
+                'umid': self.umid,
                 'coding_history': self.coding_history,
                 'loudness_value': self.loudness_value,
                 'loudness_range': self.loudness_range,

src/wavinfo/wave_cues_reader.py

@@ -0,0 +1,286 @@
+"""
+Cues metadata
+
+For reference on implementation of cues and related metadata see:
+August 1991, "Multimedia Programming Interface and Data Specifications 1.0",
+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
+
+#: Country Codes used in the RIFF standard to resolve locale. These codes
+#: appear in CSET and LTXT metadata.
+CountryCodes = """000 None Indicated
+001,USA
+002,Canada
+003,Latin America
+030,Greece
+031,Netherlands
+032,Belgium
+033,France
+034,Spain
+039,Italy
+041,Switzerland
+043,Austria
+044,United Kingdom
+045,Denmark
+046,Sweden
+047,Norway
+049,West Germany
+052,Mexico
+055,Brazil
+061,Australia
+064,New Zealand
+081,Japan
+082,Korea
+086,People’s Republic of China
+088,Taiwan
+090,Turkey
+351,Portugal
+352,Luxembourg
+354,Iceland
+358,Finland"""
+
+#: Language and Dialect codes used in the RIFF standard to resolve native
+#: language of text fields. These codes appear in CSET and LTXT metadata.
+LanguageDialectCodes = """0 0 None Indicated
+1,1,Arabic
+2,1,Bulgarian
+3,1,Catalan
+4,1,Traditional Chinese
+4,2,Simplified Chinese
+5,1,Czech
+6,1,Danish
+7,1,German
+7,2,Swiss German
+8,1,Greek
+9,1,US English
+9,2,UK English
+10,1,Spanish
+10,2,Spanish Mexican
+11,1,Finnish
+12,1,French
+12,2,Belgian French
+12,3,Canadian French
+12,4,Swiss French
+13,1,Hebrew
+14,1,Hungarian
+15,1,Icelandic
+16,1,Italian
+16,2,Swiss Italian
+17,1,Japanese
+18,1,Korean
+19,1,Dutch
+19,2,Belgian Dutch
+20,1,Norwegian - Bokmal
+20,2,Norwegian - Nynorsk
+21,1,Polish
+22,1,Brazilian Portuguese
+22,2,Portuguese
+23,1,Rhaeto-Romanic
+24,1,Romanian
+25,1,Russian
+26,1,Serbo-Croatian (Latin)
+26,2,Serbo-Croatian (Cyrillic)
+27,1,Slovak
+28,1,Albanian
+29,1,Swedish
+30,1,Thai
+31,1,Turkish
+32,1,Urdu
+33,1,Bahasa"""
+
+
+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
+    #: principle this can be affected by playlists and ``wavl`` chunk
+    #: placement.
+    position: int
+    chunk_id: bytes
+    chunk_start: int
+    block_start: int
+    sample_offset: int
+
+    Format = "<II4sIII"
+
+    @classmethod
+    def format_size(cls) -> int:
+        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)}")
+
+        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])
+
+
+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"))
+
+
+NoteEntry = LabelEntry
+
+
+class RangeLabel(NamedTuple):
+    """
+    A ``ltxt`` structure.
+    """
+    name: int
+    length: int
+    purpose: str
+    country: int
+    language: int
+    dialect: int
+    codepage: int
+    text: str
+
+    @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):]
+
+        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))
+
+
+@dataclass
+class WavCuesReader:
+
+    #: Every ``cue`` entry in the file
+    cues: List[CueEntry]
+
+    #: Every ``labl`` in the file
+    labels: List[LabelEntry]
+
+    #: Every ``ltxt`` in the file
+    ranges: List[RangeLabel]
+
+    #: Every ``note`` in the file
+    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':
+
+        cue_list = []
+        if cues is not None:
+            cues_data = cues.read_data(f)
+            assert len(cues_data) >= 4, "cue metadata too short"
+            offset = calcsize("<I")
+            cues_count = unpack("<I", cues_data[0:offset])
+
+            for _ in range(cues_count[0]):
+                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)
+            )
+
+        range_list = []
+        for r in ltxts:
+            range_list.append(
+                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)
+            )
+
+        return WavCuesReader(cues=cue_list, labels=label_list,
+                             ranges=range_list, notes=note_list)
+
+    def each_cue(self) -> Generator[Tuple[int, int], None, None]:
+        """
+        Iterate through each cue.
+
+        :yields: the cue's ``name`` and ``sample_offset``
+        """
+        for cue in self.cues:
+            yield (cue.name, cue.sample_offset)
+
+    def label_and_note(self, cue_ident: int) -> Tuple[Optional[str],
+                                                      Optional[str]]:
+        """
+        Get the label and note (extended comment) for a cue.
+
+        :param cue_ident: the cue's name, its unique identifying number
+        :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)
+        return (label, note)
+
+    def range(self, cue_ident: int) -> Optional[int]:
+        """
+        Get the length of the time range for a cue, if it has one.
+
+        :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)
+
+    def to_dict(self) -> Dict[str, Any]:
+        retval = dict()
+
+        for n, t in self.each_cue():
+            retval[n] = dict()
+            retval[n]['frame'] = t
+            label, note = self.label_and_note(n)
+            r = self.range(n)
+
+            if label is not None:
+                retval[n]['label'] = label
+            if note is not None:
+                retval[n]['note'] = note
+            if r is not None:
+                retval[n]['length'] = r
+
+        return retval

src/wavinfo/wave_dbmd_reader.py

@@ -0,0 +1,660 @@
+"""
+Reading Dolby Bitstream Metadata
+
+Unless otherwise stated, all § references here are to
+`EBU Tech 3285 Supplement 6`_.
+
+.. _EBU Tech 3285 Supplement 6: https://tech.ebu.ch/docs/tech/tech3285s6.pdf
+"""
+
+from enum import IntEnum, Enum
+from struct import unpack
+from dataclasses import dataclass, asdict
+from typing import List, Tuple, Any, Union
+
+from io import BytesIO
+
+
+class SegmentType(IntEnum):
+    """
+    Metadata segment type.
+    """
+    EndMarker = 0x0
+    DolbyE = 0x1
+    # Reserved2 = 0x2
+    DolbyDigital = 0x3
+    # Reserved4 = 0x4
+    # Reserved5 = 0x5
+    # Reserved6 = 0x6
+    DolbyDigitalPlus = 0x7
+    AudioInfo = 0x8
+    DolbyAtmos = 0x9
+    DolbyAtmosSupplemental = 0xa
+
+    @classmethod
+    def _missing_(cls, val):
+        return val
+
+
+@dataclass
+class DolbyDigitalPlusMetadata:
+    """
+    *Dolby Digital Plus* is Dolby's brand for multichannel surround
+    on discrete formats that aren't AC-3 (Dolby Digital) or Dolby E. This
+    metadata segment is present in ADM wave files created with a Dolby Atmos
+    Production Suite.
+
+    Where an AC-3 bitstream can contain multiple programs, a Dolby Digital
+    Plus bitstream will only contain one program.
+    """
+
+    class DownMixLevelToken(Enum):
+        """
+        A gain coefficient used in several metadata fields for downmix
+        scenarios.
+        """
+
+        PLUS_3DB = 0b000
+        "+3 dB"
+
+        PLUS_1_5DB = 0b001
+        "+1.5 dB"
+
+        UNITY = 0b010
+        "0dB"
+
+        MINUS_1_5DB = 0b011
+        "-1.5 dB"
+
+        MINUS_3DB = 0b100
+        "-3 dB"
+
+        MINUS_4_5DB = 0b101
+        "-4.5 dB"
+
+        MINUS_6DB = 0b110
+        "-6 dB"
+
+        MUTE = 0b111
+        "-∞ dB"
+
+    class DolbySurroundEncodingMode(Enum):
+        """
+        Dolby surround endcoding mode.
+        """
+        RESERVED = 0b11
+        IN_USE = 0b10
+        NOT_IN_USE = 0b01
+        NOT_INDICATED = 0b00
+
+    class BitStreamMode(Enum):
+        """
+        Dolby Digital Plus `bsmod` field
+        § 4.3.2.2
+        """
+
+        COMPLETE_MAIN = 0b000
+        "main audio service: complete main"
+
+        MUSIC_AND_EFFECTS = 0b001
+        "main audio service: music and effects"
+
+        VISUALLY_IMPAIRED = 0b010
+        "associated service: visually impaired"
+
+        HEARING_IMPAIRED = 0b011
+        "associated service: hearing impaired"
+
+        DIALOGUE_ONLY = 0b100
+        "associated service: dialogue"
+
+        COMMENTARY = 0b101
+        "associated service: commentary"
+
+        EMERGENCY = 0b110
+        "associated service: emergency"
+
+        VOICEOVER_KARAOKE = 0b111
+        """
+        associated service: voice over *OR* main audio service: karaoke.
+        If `acmod` is `0b001` (mono 1/0), this is voice-over, otherwise it
+        should be interpreted as karaoke.
+        """
+
+    class AudioCodingMode(Enum):
+        """
+        Dolby Digital Plus `acmod` field
+        § 4.3.2.3
+        """
+        RESERVED = 0b000
+        CH_ORD_1_0 = 0b001
+        "Mono"
+        CH_ORD_2_0 = 0b010
+        "L/R stereo"
+        CH_ORD_3_0 = 0b011
+        "LCR stereo"
+        CH_ORD_2_1 = 0b100
+        "LR + mono surround"
+        CH_ORD_3_1 = 0b101
+        "LCR + mono surround"
+        CH_ORD_2_2 = 0b110
+        "LR + LR surround"
+        CH_ORD_3_2 = 0b111
+        "LCR + LR surround"
+
+    class CenterDownMixLevel(Enum):
+        """
+        § 4.3.3.1
+        """
+
+        DOWN_3DB = 0b00
+        "Attenuate 3 dB"
+
+        DOWN_45DB = 0b01
+        "Attenuate 4.5 dB"
+
+        DOWN_6DB = 0b10
+        "Attenuate 6 dB"
+
+        RESERVED = 0b11
+
+    class SurroundDownMixLevel(Enum):
+        """
+        Dolby Digital Plus `surmixlev` field
+        § 4.3.3.2
+        """
+        DOWN_3DB = 0b00
+        DOWN_6DB = 0b01
+        MUTE = 0b10
+        RESERVED = 0b11
+
+    class LanguageCode(int):
+        """
+        § 4.3.4.1
+
+        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
+        RESERVED = 0b11
+
+    class PreferredDownMixMode(Enum):
+        """
+        Indicates the creating engineer's preference of what the receiver
+        should downmix.
+        § 4.3.8.1
+        """
+        NOT_INDICATED = 0b00
+        PRO_LOGIC = 0b01
+        STEREO = 0b10
+        PRO_LOGIC_2 = 0b11
+
+    class SurroundEXMode(IntEnum):
+        """
+        Dolby Surround-EX mode.
+        `dsurexmod` § 4.3.9.1
+        """
+        NOT_INDICATED = 0b00
+        NOT_SEX = 0b01
+        SEX = 0b10
+        PRO_LOGIC_2 = 0b11
+
+    class HeadphoneMode(IntEnum):
+        """
+        `dheadphonmod` § 4.3.9.2
+        """
+        NOT_INDICATED = 0b00
+        NOT_DOLBY_HEADPHONE = 0b01
+        DOLBY_HEADPHONE = 0b10
+        RESERVED = 0b11
+
+    class ADConverterType(Enum):
+        STANDARD = 0
+        HDCD = 1
+
+    class StreamDependency(Enum):
+        """
+        Encodes `ddplus_info1.stream_type` field § 4.3.12.1
+        """
+
+        INDEPENDENT = 0
+        DEPENDENT = 1
+        INDEPENDENT_FROM_DOLBY_DIGITAL = 2
+        RESERVED = 3
+
+    class RFCompressionProfile(Enum):
+        """
+        `compr1` RF compression profile
+        § 4.3.10 (fig 42)
+        """
+        NONE = 0
+        FILM_STANDARD = 1
+        FILM_LIGHT = 2
+        MUSIC_STANDARD = 3
+        MUSIC_LIGHT = 4
+        SPEECH = 5
+
+    #: Program ID number, this identifies the program in a multi-program
+    #: element. § 4.3.1
+    program_id: int
+
+    #: `True` if LFE is enabled. § 4.3.2.1
+    lfe_on: bool
+
+    #: The kind of service of this stream. `bsmod` § 4.3.2.2
+    bitstream_mode: BitStreamMode
+
+    #: Indicates which channels are in use. `acmod` § 4.3.2.3
+    audio_coding_mode: AudioCodingMode
+
+    #: When the front three channels are in use, gives the center
+    #: downmix level. ``
+    center_downmix_level: CenterDownMixLevel
+
+    #: When the surround channels are in use, gives the surround
+    #: downmix level.
+    surround_downmix_level: SurroundDownMixLevel
+
+    #: If the `acmod` is LR, this indicates if the channels
+    #: are encoded in Dolby Surround.
+    dolby_surround_encoded: DolbySurroundEncodingMode
+
+    #: `True` if there is a langcode present in the metadata.
+    langcode_present: bool
+
+    #: `True` if this bitstream is copyrighted.
+    copyright_bitstream: bool
+
+    #: `True` if this bitstream is original.
+    original_bitstream: bool
+
+    dialnorm: DialnormLevel
+
+    #: Language code
+    langcode: int
+
+    #: `True` if `mixlevel` and `roomtype` are valid
+    prod_info_exists: bool
+
+    #: Mix level
+    mixlevel: MixLevel
+
+    #: Room Type
+    roomtype: RoomType
+
+    #: LoRo preferred center downmix level
+    loro_center_downmix_level: DownMixLevelToken
+
+    #: LoRo preferred surround downmix level
+    loro_surround_downmix_level: DownMixLevelToken
+
+    #: Preferred downmix mode
+    downmix_mode: PreferredDownMixMode
+
+    #: LtRt preferred center downmix level
+    ltrt_center_downmix_level: DownMixLevelToken
+
+    #: LtRt preferred surround downmix level
+    ltrt_surround_downmix_level: DownMixLevelToken
+
+    #: Surround-EX mode
+    surround_ex_mode: SurroundEXMode
+
+    #: Dolby Headphone mode
+    dolby_headphone_encoded: HeadphoneMode
+
+    ad_converter_type: ADConverterType
+    compression_profile: RFCompressionProfile
+    dynamic_range: RFCompressionProfile
+
+    #: Indicates if this stream can be decoded independently or not
+    stream_dependency: StreamDependency
+
+    #: Data rate of this bitstream in kilobits per second
+    datarate_kbps: int
+
+    @staticmethod
+    def load(buffer: bytes):
+        assert len(buffer) == 96, "Dolby Digital Plus segment incorrect size, "
+        "expected 96 got %i" % len(buffer)
+
+        def program_id(b) -> int:
+            return b
+
+        def program_info(b):
+            return (b & 0x40) > 0, \
+                DolbyDigitalPlusMetadata.BitStreamMode(b & 0x38 >> 3), \
+                DolbyDigitalPlusMetadata.AudioCodingMode(b & 0x7)
+
+        def ddplus_reserved1(_):
+            pass
+
+        def surround_config(b):
+            return (
+                DolbyDigitalPlusMetadata.CenterDownMixLevel(b & 0x30 >> 4),
+                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)
+
+        def langcod(b) -> int:
+            return b
+
+        def audio_prod_info(b):
+            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)
+
+        # 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)
+
+        # 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)
+
+        def ddplus_reserved2(_):
+            pass
+
+        def compr1(b):
+            return DolbyDigitalPlusMetadata.RFCompressionProfile(b)
+
+        def dynrng1(b):
+            DolbyDigitalPlusMetadata.RFCompressionProfile(b)
+
+        def ddplus_reserved3(_):
+            pass
+
+        def ddplus_info1(b):
+            return DolbyDigitalPlusMetadata.StreamDependency(b & 0xc >> 2)
+
+        def ddplus_reserved4(_):
+            pass
+
+        def datarate(b) -> int:
+            return unpack("<H", b)[0]
+
+        def reserved(_):
+            pass
+
+        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])
+        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])
+
+        ddplus_reserved2(buffer[11:14])
+        compression = compr1(buffer[14])
+        dynamic_range = dynrng1(buffer[15])
+        ddplus_reserved3(buffer[16:19])
+        stream_info = ddplus_info1(buffer[19])
+        ddplus_reserved4(buffer[20:25])
+        data_rate = datarate(buffer[25:27])
+        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)
+
+
+@dataclass
+class DolbyAtmosMetadata:
+    """
+    Dolby Atmos Metadata Segment
+
+    https://github.com/DolbyLaboratories/dbmd-atmos-parser/
+    """
+
+    class WarpMode(Enum):
+        NORMAL = 0x00
+        WARPING = 0x01
+        DOWNMIX_PLIIX = 0x02
+        DOWNMIX_LORO = 0x03
+        NOT_INDICATED = 0x04
+
+    tool_name: str
+    tool_version: Tuple[int, int, int]
+    warp_mode: WarpMode
+
+    SEGMENT_LENGTH = 248
+    TOOL_NAME_LENGTH = 64
+
+    @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)}")
+
+        h = BytesIO(data)
+
+        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')
+
+        vers = h.read(3)
+        major, minor, fix = unpack("BBB", vers)
+
+        h.seek(53, 1)
+
+        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))
+
+
+@dataclass
+class DolbyAtmosSupplementalMetadata:
+    """
+    Dolby Atmos supplemental metadata segment.
+
+    https://github.com/DolbyLaboratories/dbmd-atmos-parser/blob/
+    master/dbmd_atmos_parse/src/dbmd_atmos_parse.c
+    """
+
+    class BinauralRenderMode(Enum):
+        BYPASS = 0x00
+        NEAR = 0x01
+        FAR = 0x02
+        MID = 0x03
+        NOT_INDICATED = 0x04
+
+    object_count: int
+    render_modes: List['DolbyAtmosSupplementalMetadata.BinauralRenderMode']
+    trim_modes: List[int]
+
+    MAGIC = 0xf8726fbd
+    TRIM_CONFIG_COUNT = 9
+
+    @classmethod
+    def load(cls, data: bytes):
+
+        trim_modes = []
+        render_modes = []
+
+        h = BytesIO(data)
+        magic = unpack("<I", h.read(4))[0]
+        assert magic == cls.MAGIC, "Magic value was not found"
+
+        object_count = unpack("<H", h.read(2))[0]
+
+        h.read(1)  # skip 1
+
+        for _ in range(cls.TRIM_CONFIG_COUNT):
+            auto_trim = unpack("B", h.read(1))
+            trim_modes.append(auto_trim)
+
+            h.read(14)  # skip 14
+
+        h.read(object_count)  # skip object_count bytes
+
+        for _ in range(object_count):
+            binaural_mode = unpack("B", h.read(1))[0]
+            binaural_mode &= 0x7
+            render_modes.append(binaural_mode)
+
+        return DolbyAtmosSupplementalMetadata(object_count=object_count,
+                                              render_modes=render_modes,
+                                              trim_modes=trim_modes)
+
+
+class WavDolbyMetadataReader:
+    """
+    Reads Dolby bitstream metadata.
+    """
+
+    #: List of the Dolby Metadata Segments.
+    #:
+    #: Each list entry is a tuple of `SegmentType`, a `bool`
+    #: indicating if the segment's checksum was valid, and the
+    #: segment's parsed dataclass (or a `bytes` array if it was
+    #: not recognized).
+    segment_list: List[Tuple[Union[SegmentType, int], bool, Any]]
+
+    version: Tuple[int, int, int, int]
+
+    @staticmethod
+    def segment_checksum(bs: bytes, size: int):
+        retval = size
+        for b in bs:
+            retval += int(b)
+            retval &= 0xff
+
+        retval = ((~retval) + 1) & 0xff
+
+        return retval
+
+    def __init__(self, dbmd_data):
+        self.segment_list = []
+
+        h = BytesIO(dbmd_data)
+
+        v_vec = []
+        for _ in range(4):
+            b = h.read(1)
+            v_vec.insert(0, unpack("B", b)[0])
+
+        self.version = tuple(v_vec)
+
+        while True:
+            stype = SegmentType(unpack("B", h.read(1))[0])
+            if stype == SegmentType.EndMarker:
+                break
+            else:
+                seg_size = unpack("<H", h.read(2))[0]
+                seg_payload = h.read(seg_size)
+                expected_checksum = WavDolbyMetadataReader\
+                    .segment_checksum(seg_payload, seg_size)
+                checksum = unpack("B", h.read(1))[0]
+
+                segment = seg_payload
+                if stype == SegmentType.DolbyDigitalPlus:
+                    segment = DolbyDigitalPlusMetadata.load(segment)
+                elif stype == SegmentType.DolbyAtmos:
+                    segment = DolbyAtmosMetadata.load(segment)
+                elif stype == SegmentType.DolbyAtmosSupplemental:
+                    segment = DolbyAtmosSupplementalMetadata.load(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]]
+
+    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]]
+
+    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]]
+
+    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))

src/wavinfo/wave_info_reader.py

@@ -1,5 +1,7 @@
 from .riff_parser import parse_chunk, ListChunkDescriptor
 
+from typing import Optional
+
 
 class WavInfoChunkReader:
 
@@ -8,47 +10,52 @@ class WavInfoChunkReader:
 
         f.seek(0)
         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 = self._get_field(f, b'ICOP')
+        self.copyright: Optional[str] = self._get_field(f, b'ICOP')
         #: 'IPRD' Product
-        self.product = self._get_field(f, b'IPRD')
-        self.album = self.product
+        self.product: Optional[str] = self._get_field(f, b'IPRD')
+        self.album: Optional[str] = self.product
         #: 'IGNR' Genre
-        self.genre = self._get_field(f, b'IGNR')
-        #: 'ISBJ' Supject
-        self.subject = self._get_field(f, b'ISBJ')
+        self.genre: Optional[str] = self._get_field(f, b'IGNR')
+        #: 'ISBJ' Subject
+        self.subject: Optional[str] = self._get_field(f, b'ISBJ')
         #: 'IART' Artist, composer, author
-        self.artist = self._get_field(f, b'IART')
+        self.artist: Optional[str] = self._get_field(f, b'IART')
         #: 'ICMT' Comment
-        self.comment = self._get_field(f, b'ICMT')
+        self.comment: Optional[str] = self._get_field(f, b'ICMT')
         #: 'ISFT' Software, encoding application
-        self.software = self._get_field(f, b'ISFT')
+        self.software: Optional[str] = self._get_field(f, b'ISFT')
         #: 'ICRD' Created date
-        self.created_date = self._get_field(f, b'ICRD')
+        self.created_date: Optional[str] = self._get_field(f, b'ICRD')
         #: 'IENG' Engineer
-        self.engineer = self._get_field(f, b'IENG')
+        self.engineer: Optional[str] = self._get_field(f, b'IENG')
         #: 'ITCH' Technician
-        self.technician = self._get_field(f, b'ITCH')
+        self.technician: Optional[str] = self._get_field(f, b'ITCH')
         #: 'IKEY' Keywords, keyword list
-        self.keywords = self._get_field(f, b'IKEY')
+        self.keywords: Optional[str] = self._get_field(f, b'IKEY')
         #: 'INAM' Name, title
-        self.title = self._get_field(f, b'INAM')
+        self.title: Optional[str] = self._get_field(f, b'INAM')
         #: 'ISRC' Source
-        self.source = self._get_field(f, b'ISRC')
+        self.source: Optional[str] = self._get_field(f, b'ISRC')
         #: 'TAPE' Tape
-        self.tape = self._get_field(f, b'TAPE')
+        self.tape: Optional[str] = self._get_field(f, b'TAPE')
         #: 'IARL' Archival Location
-        self.archival_location = self._get_field(f, b'IARL')
+        self.archival_location: Optional[str] = self._get_field(f, b'IARL')
         #: 'ICSM' Commissioned
-        self.commissioned = self._get_field(f, b'ICMS')
+        self.commissioned: Optional[str] = self._get_field(f, b'ICMS')
 
-    def _get_field(self, f, field_ident):
-        search = next(((chunk.start, chunk.length) for chunk in self.info_chunk.children if chunk.ident == field_ident),
+    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)
 
         if search is not None:
@@ -58,7 +65,7 @@ class WavInfoChunkReader:
         else:
             return None
 
-    def to_dict(self):
+    def to_dict(self) -> dict:  # FIXME should be asdict
         """
         A dictionary with all of the key/values read from the INFO scope.
         """

src/wavinfo/wave_ixml_reader.py

@@ -0,0 +1,263 @@
+from lxml import etree as ET
+import io
+# from collections import namedtuple
+from typing import Optional
+from enum import IntEnum
+from typing import NamedTuple
+
+
+class IXMLTrack(NamedTuple):
+    channel_index: int
+    interleave_index: int
+    name: str
+    function: str
+
+
+class SteinbergMetadata:
+    """
+    Vendor-specific Steinberg metadata.
+    """
+
+    class AudioSpeakerArrangement(IntEnum):
+        """
+        Steinberg speaker format enumeration.
+        """
+        MONO = 0
+        STEREO = 1
+        LRC = 10
+        LRCS = 14
+        QUAD = 15
+        CINE_50 = 18
+        CINE_51 = 19
+        CINE_60 = 20
+        CINE_61 = 22
+        CINE_70 = 25
+        CINE_71 = 27
+        SDDS_70 = 24
+        SDDS_71 = 26
+        MUSIC_60 = 21  # ??
+        MUSIC_61 = 23
+        ATMOS_712 = 33
+        ATMOS_504 = 35
+        ATMOS_514 = 36
+        ATMOS_714 = 44
+        ATMOS_702 = 48
+        ATMOS_716 = 51
+        ATMOS_914 = 53
+        ATMOS_916 = 55
+        AMB_1ORDER = 45
+        AMB_2ORDER = 46
+        AMB_3ORDER = 47
+        AURO_10_0 = 37
+        AURO_10_1 = 38
+        AURO_11_0 = 39
+        AURO_11_1 = 40
+        AURO_13_0 = 41
+        AURO_13_1 = 42
+
+    Steinberg_xpath = "./STEINBERG"
+
+    @classmethod
+    def present(cls, xml: ET.ElementTree) -> bool:
+        """
+        Test if `xml` has Steinberg metadata.
+        :param xml: an iXML ElementTree
+        """
+        x = xml.find(cls.Steinberg_xpath)
+        return x is not None
+
+    def __init__(self, xml: ET.ElementTree) -> None:
+        """
+        Parse Steinberg iXML data.
+        :param xml: The entire iXML Tree
+        """
+        self.parsed = xml.find(self.Steinberg_xpath)
+
+    @property
+    def audio_speaker_arrangement(self) -> Optional[AudioSpeakerArrangement]:
+        """
+        `AudioSpeakerArrangement` property
+        """
+        val = self.parsed.find(
+            "./ATTR_LIST/ATTR[NAME = 'AudioSpeakerArrangement']/VALUE")
+        if val is not None:
+            return type(self).AudioSpeakerArrangement(int(val.text))
+
+    @property
+    def sample_format_size(self) -> Optional[int]:
+        """
+        AudioSampleFormatSize
+        """
+        val = self.parsed.find(
+            "./ATTR_LIST/ATTR[NAME = 'AudioSampleFormatSize']/VALUE")
+        if val is not None:
+            return int(val.text)
+
+    @property
+    def media_company(self) -> Optional[str]:
+        """
+        MediaCompany
+        """
+        val = self.parsed.find(
+            "./ATTR_LIST/ATTR[NAME = 'MediaCompany']/VALUE")
+        if val is not None:
+            return val.text
+
+    @property
+    def media_drop_frames(self) -> Optional[bool]:
+        """
+        MediaDropFrames
+        """
+        val = self.parsed.find(
+            "./ATTR_LIST/ATTR[NAME = 'MediaDropFrames']/VALUE")
+        if val is not None:
+            return val.text == "1"
+
+    @property
+    def media_duration(self) -> Optional[float]:
+        """
+        MediaDuration
+        """
+        val = self.parsed.find(
+            "./ATTR_LIST/ATTR[NAME = 'MediaDuration']/VALUE")
+        if val is not None:
+            return float(val.text)
+
+    @property
+    def media_start_time(self) -> Optional[float]:
+        """
+        MediaStartTime
+        """
+        pass
+
+    @property
+    def media_track_title(self) -> Optional[str]:
+        """
+        MediaTrackTitle
+        """
+        pass
+
+    @property
+    def program_name(self) -> Optional[str]:
+        """
+        ProgramName
+        """
+        pass
+
+    @property
+    def program_version(self) -> Optional[str]:
+        """
+        ProgramVersion
+        """
+        pass
+
+
+class WavIXMLFormat:
+    """
+    iXML recorder metadata.
+    """
+
+    def __init__(self, xml):
+        """
+        Parse iXML.
+        :param xml: A bytes-like object containing the iXML payload.
+        """
+        self.source = xml
+        xml_bytes = io.BytesIO(xml)
+        parser = ET.XMLParser(recover=True)
+        self.parsed: ET.ElementTree = ET.parse(xml_bytes, parser=parser)
+
+    def _get_text_value(self, xpath) -> Optional[str]:
+        e = self.parsed.find("./" + xpath)
+        if e is not None:
+            return e.text
+        else:
+            return None
+
+    def xml_str(self) -> str:
+        return ET.tostring(self.parsed).decode("utf-8")
+
+    @property
+    def raw_xml(self) -> ET.ElementTree:
+        """
+        The root entity of the iXML document.
+        """
+        return self.parsed
+
+    @property
+    def track_list(self):
+        """
+        A description of each track.
+
+        :yields: `IXMLTrack` for each track.
+        """
+        for track in self.parsed.find("./TRACK_LIST").iter():
+            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())')
+                )
+
+    @property
+    def project(self) -> Optional[str]:
+        """
+        The project/film name entered for the recording.
+        """
+        return self._get_text_value("PROJECT")
+
+    @property
+    def scene(self) -> Optional[str]:
+        """
+        Scene/slate.
+        """
+        return self._get_text_value("SCENE")
+
+    @property
+    def take(self) -> Optional[str]:
+        """
+        Take number.
+        """
+        return self._get_text_value("TAKE")
+
+    @property
+    def tape(self) -> Optional[str]:
+        """
+        Tape name.
+        """
+        return self._get_text_value("TAPE")
+
+    @property
+    def family_uid(self) -> Optional[str]:
+        """
+        The globally-unique ID for this file family. This may be in the format
+        of a GUID, or an EBU Rec 9 source identifier, or some other dumb
+        number.
+        """
+        return self._get_text_value("FILE_SET/FAMILY_UID")
+
+    @property
+    def family_name(self) -> Optional[str]:
+        """
+        The name of this file's file family.
+        """
+        return self._get_text_value("FILE_SET/FAMILY_NAME")
+
+    @property
+    def steinberg(self) -> Optional[SteinbergMetadata]:
+        """
+        Steinberg vendor iXML metadata if present.
+        """
+        if SteinbergMetadata.present(self.raw_xml):
+            return SteinbergMetadata(self.raw_xml)
+        else:
+            return None
+
+    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)

src/wavinfo/wave_reader.py

@@ -0,0 +1,246 @@
+# -*- coding: utf-8 -*-
+import struct
+import os
+from typing import Optional, Generator, Any, NamedTuple
+
+import pathlib
+
+
+from .riff_parser import parse_chunk, ChunkDescriptor, ListChunkDescriptor
+from .wave_ixml_reader import WavIXMLFormat
+from .wave_bext_reader import WavBextReader
+from .wave_info_reader import WavInfoChunkReader
+from .wave_adm_reader import WavADMReader
+from .wave_dbmd_reader import WavDolbyMetadataReader
+from .wave_cues_reader import WavCuesReader
+from .wave_smpl_reader import WavSmplReader
+
+#: Calculated statistics about the audio data.
+
+
+class WavDataDescriptor(NamedTuple):
+    byte_count: int
+    frame_count: int
+
+
+#: The format of the audio samples.
+class WavAudioFormat(NamedTuple):
+    audio_format: int
+    channel_count: int
+    sample_rate: int
+    byte_rate: int
+    block_align: int
+    bits_per_sample: int
+
+
+class WavInfoReader:
+    """
+    Parse a WAV audio file for metadata.
+    """
+
+    def __init__(self, path, info_encoding='latin_1', bext_encoding='ascii'):
+        """
+        Create a new reader object.
+
+        :param path:
+            A pathlike object or IO to the wav file you wish to probe or a
+            file handle to an open file.
+
+        :param info_encoding:
+            The text encoding of the ``INFO``, ``LABL`` and other RIFF-defined
+            metadata fields.
+
+        :param bext_encoding:
+            The text encoding to use when decoding the string
+            fields of the Broadcast-WAV extension. Per EBU 3285 this is ASCII
+            but this parameter is available to you if you encounter a weirdo.
+        """
+
+        self.info_encoding = info_encoding
+        self.bext_encoding = bext_encoding
+
+        #: Wave audio data format.
+        self.fmt: Optional[WavAudioFormat] = None
+
+        #: Statistics of the `data` section.
+        self.data: Optional[WavDataDescriptor] = None
+
+        #: Broadcast-Wave metadata.
+        self.bext: Optional[WavBextReader] = None
+
+        #: iXML metadata.
+        self.ixml: Optional[WavIXMLFormat] = None
+
+        #: ADM Audio Definiton Model metadata.
+        self.adm: Optional[WavADMReader] = None
+
+        #: Dolby bitstream metadata.
+        self.dolby: Optional[WavDolbyMetadataReader] = None
+
+        #: RIFF INFO metadata.
+        self.info: Optional[WavInfoChunkReader] = None
+
+        #: RIFF cues markers, labels, and notes.
+        self.cues: Optional[WavCuesReader] = None
+
+        #: Sampler `smpl` metadata
+        self.smpl: Optional[WavSmplReader] = None
+
+        if hasattr(path, 'read'):
+            self.get_wav_info(path)
+            self.url = 'about:blank'
+            self.path = repr(path)
+
+        else:
+            absolute_path = os.path.abspath(path)
+
+            #: `file://` url for the file.
+            self.url: str = pathlib.Path(absolute_path).as_uri()
+
+            self.path = absolute_path
+
+            with open(path, 'rb') as path:
+                self.get_wav_info(path)
+
+    def get_wav_info(self, wavfile):
+        chunks = parse_chunk(wavfile)
+        assert type(chunks) is ListChunkDescriptor
+
+        self.main_list = chunks.children
+        wavfile.seek(0)
+
+        self.fmt = self._get_format(wavfile)
+        self.bext = self._get_bext(wavfile, encoding=self.bext_encoding)
+        self.ixml = self._get_ixml(wavfile)
+        self.adm = self._get_adm(wavfile)
+        self.info = self._get_info(wavfile, encoding=self.info_encoding)
+        self.dolby = self._get_dbmd(wavfile)
+        self.cues = self._get_cue(wavfile)
+        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)
+
+        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
+
+    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)
+
+        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')
+
+        assert isinstance(self.fmt, WavAudioFormat)
+        return WavDataDescriptor(
+            byte_count=data_chunk.length,
+            frame_count=int(data_chunk.length / self.fmt.block_align))
+
+    def _get_format(self, 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"
+        rest_starts = struct.calcsize(packstring)
+
+        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]
+                              )
+
+    def _get_info(self, f, encoding):
+        finder = (chunk.signature for chunk in self.main_list
+                  if type(chunk) is ListChunkDescriptor)
+
+        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)
+        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
+
+    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
+
+    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
+
+    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)
+
+        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']
+
+        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)
+        return WavSmplReader(sampler_data) if sampler_data else None
+
+    # FIXME: this should probably be named "iter()"
+    def walk(self) -> Generator[str, str, Any]:
+        """
+        Walk all of the available metadata fields.
+
+        :yields: tuples of the *scope*, *key*, and *value* of
+            each metadatum. The *scope* value will be one of
+            "fmt", "data", "ixml", "bext", "info", "dolby", "cues", "adm" or
+            "smpl".
+        """
+
+        scopes = ('fmt', 'data', 'ixml', 'bext', 'info', 'adm', 'cues',
+                  'dolby', 'smpl')
+
+        for scope in scopes:
+            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 {}
+                for key in mdict.keys():
+                    yield scope, key, mdict[key]
+
+    def __repr__(self):
+        return 'WavInfoReader({}, {}, {})'.format(self.path,
+                                                  self.info_encoding,
+                                                  self.bext_encoding)

src/wavinfo/wave_smpl_reader.py

@@ -0,0 +1,114 @@
+import struct
+
+from typing import Tuple, NamedTuple, List
+
+
+class WaveSmplLoop(NamedTuple):
+    ident: int
+    loop_type: int
+    start: int
+    end: int
+    detune_cents: int
+    repetition_count: int
+
+    def loop_type_desc(self):
+        if self.loop_type == 0:
+            return 'FORWARD'
+        elif self.loop_type == 1:
+            return 'FORWARD_BACKWARD'
+        elif self.loop_type == 2:
+            return 'BACKWARD'
+        elif 3 <= self.loop_type <= 31:
+            return 'RESERVED'
+        else:
+            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,
+        }
+
+
+class WavSmplReader:
+
+    def __init__(self, smpl_data: bytes):
+        """
+        Read sampler metadata from smpl chunk.
+        """
+
+        header_field_fmt = "<IIIIiIbbbbII"
+        loop_field_fmt = "<IIIIiI"
+        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])
+
+        #: The MIDI Manufacturer's Association code for the sampler
+        #: manufactuer, or 0 if not specific.
+        self.manufacturer: int = unpacked_data[0]
+
+        #: The manufacturer-assigned code for their specific sampler model, or
+        #: 0 if not specific.
+        self.product: int = unpacked_data[1]
+
+        #: The number of nanoseconds in one audio frame.
+        self.sample_period_ns: int = unpacked_data[2]
+
+        #: The MIDI note number for the loops in this sample
+        self.midi_note: int = unpacked_data[3]
+
+        #: The number of semitones above the MIDI note the loops tune for.
+        self.midi_pitch_detune_cents: int = unpacked_data[4]
+
+        #: SMPTE timecode format, one of (0, 24, 25, 29, 30)
+        self.smpte_format: int = unpacked_data[5]
+
+        #: The SMPTE offset to apply, as a tuple of four ints representing
+        #: hh, mm, ss, ff
+        self.smpte_offset: Tuple[int, int, int, int] = unpacked_data[6:10]
+
+        loop_count = unpacked_data[10]
+        sampler_udata_length = unpacked_data[11]
+
+        #: List of loops in the file.
+        self.sample_loops: List[WaveSmplLoop] = []
+
+        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]))
+
+        #: 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]
+
+    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,
+        }

src/wavinfo/wavfind.py

@@ -0,0 +1,35 @@
+"""
+
+"""
+
+from optparse import OptionParser, OptionGroup
+import sys
+
+
+def main():
+    parser = OptionParser()
+
+    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.add_option("--scene",
+                         help='Search for this scene',
+                         metavar='SCENE')
+
+    primaries.add_option("--take",
+                         help='Search for this take',
+                         metavar='TAKE')
+
+    primaries.add_option("--desc",
+                         help='Search descriptions',
+                         metavar='DESC')
+
+    (options, args) = parser.parse_args(sys.argv)
+
+
+if __name__ == "__main__":
+    main()

tests/__init__.py

@@ -1,3 +1,44 @@
 from . import test_wave_parsing
 
+from io import BytesIO
+from typing import Generator
+import zipfile as zf
+import os.path
+import os
+from contextlib import contextmanager
+
+# class TestFileLoader:
+#     """
+#     This guy manages the test_files archive.
+#     """
+
+#     def __init__(self, test_file_arch_name = 'archive.zip') -> None:
+#         self.base_path = os.path.join(os.path.dirname(__file__), "test_files")
+#         self.test_file_arch_name = test_file_arch_name
+#         self._gather_test_files_into_archive()
+
+#     @property
+#     def arch_path(self):
+#         return os.path.join(self.base_path, self.test_file_arch_name)        
+
+#     @contextmanager
+#     def open(self, name) -> Generator[BytesIO]:
+#         z = zf.ZipFile(self.arch_path, 'r')
+#         member = z.open(name, 'r')
+#         try:
+#             yield member
+#         finally:
+#             zf.close()
+
+#     def _gather_test_files_into_archive(self):
+#         with zf.ZipFile(self.arch_path, 'a') as zip:
+#             for root, _, files in os.walk(self.base_path):
+#                 for name in files:
+#                     if root == self.base_path and name == self.test_file_arch_name:
+#                         continue
+#                     else:
+#                         p = os.path.join(root, name)
+#                         zip.write(p)
+#                         os.unlink(p)
+
 

tests/test_adm.py

@@ -0,0 +1,54 @@
+from unittest import TestCase
+
+import wavinfo
+
+class TestADMWave(TestCase):
+
+    def setUp(self) -> None:
+        self.protools_adm_wav = "tests/test_files/protools/Test_ADM_ProTools.wav"
+        return super().setUp()
+
+    def test_chna(self):
+        info = wavinfo.WavInfoReader(self.protools_adm_wav)
+        self.assertIsNotNone(info)
+
+        adm = info.adm
+        self.assertIsNotNone(adm)
+
+        assert adm is not None
+        self.assertEqual(len(adm.channel_uids), 14)
+
+    def test_to_dict(self):
+        info = wavinfo.WavInfoReader(self.protools_adm_wav)
+        adm = info.adm
+        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
+        assert adm is not None
+        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.assertIn("contents", pdict.keys())
+        self.assertEqual(len(pdict["contents"]), 3)
+
+    def test_track_info(self):
+        info = wavinfo.WavInfoReader(self.protools_adm_wav)
+        adm = info.adm
+        assert adm is not None
+        t1 = adm.track_info(0)
+        self.assertTrue("channel_format_name" in t1.keys())
+        self.assertEqual("RoomCentricLeft", t1["channel_format_name"])
+
+        self.assertTrue("pack_format_name" in t1.keys())
+        self.assertEqual("AtmosCustomPackFormat1", t1["pack_format_name"])
+
+        t10 = adm.track_info(10)
+        self.assertTrue("content_name" in t10.keys())
+        self.assertEqual("Dialog", t10["content_name"])
+        

tests/test_cue.py

@@ -0,0 +1,75 @@
+from unittest import TestCase
+from glob import glob
+
+import wavinfo
+
+class TestCue(TestCase):
+    def setUp(self) -> None:
+        self.test_files = glob("tests/test_files/cue_chunks/*.wav") 
+        return super().setUp()
+
+    def test_enumerate(self):
+        file1 = "tests/test_files/cue_chunks/STE-000.wav"
+        w1 = wavinfo.WavInfoReader(file1)
+        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)])
+
+    def test_labels_notes(self):
+        file = "tests/test_files/cue_chunks/izotoperx_cues_test.wav"
+        w1 = wavinfo.WavInfoReader(file)
+        self.assertIsNotNone(w1.cues)
+        assert w1.cues is not None
+
+        for name, _ in w1.cues.each_cue():
+            self.assertIn(name,[1,2,3])
+            label, note = w1.cues.label_and_note(name)
+            if name == 1:
+                self.assertEqual("Marker 1", label)
+                self.assertIsNone(note)
+
+    def test_range(self):
+        file = "tests/test_files/cue_chunks/izotoperx_cues_test.wav"
+        w1 = wavinfo.WavInfoReader(file)
+        self.assertIsNotNone(w1.cues)
+        assert w1.cues is not None
+
+        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 
+        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.")
+
+        assert w.cues is not None
+        note = [n for n in w.cues.notes if n.name == 3]
+        self.assertEqual(len(note), 1)
+        self.assertEqual(note[0].text, expected)
+
+    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  
+
+        self.assertEqual(len(w.cues.labels), 3)
+        for label in w.cues.labels:
+            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

@@ -0,0 +1,60 @@
+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"
+
+    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)
+
+    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]
+
+        self.assertEqual(len(ddp), 1)
+        self.assertEqual(len(atmos), 1)
+
+    def test_checksums(self):
+        t1 = wavinfo.WavInfoReader(self.test_file)
+        d = t1.dolby
+        assert d is not None
+
+        for seg in d.segment_list:
+            self.assertTrue(seg[1])
+
+    def test_ddp(self):
+        t1 = wavinfo.WavInfoReader(self.test_file)
+        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.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")
+
+