|Package Status 1| |Package Status 2| |Pypi Installs|
Introduction
==============
pycdio is a Python interface to the *libcdio*, the CD Input and
Control library http://www.gnu.org/software/libcdio
You can get the source at the same place as libcdio:
ftp://ftp.gnu.org:/pub/gnu/libcdio/
The *pycdio* and *libcdio* libraries encapsulate CD-ROM reading and
control. Python programs wishing to be oblivious of the OS- and
device-dependent properties of a CD-ROM can use this library.
Sample Usage
============
Getting CD-ROM Drive Information
--------------------------------
.. code-block:: python
import sys
import cdio, pycdio
try:
d = cdio.Device(driver_id=pycdio.DRIVER_UNKNOWN)
drive_name = d.get_device()
except IOError:
print("Problem finding a CD-ROM")
sys.exit(1)
ok, vendor, model, release = d.get_hwinfo()
print("drive: %s, vendor: %s, model: %s, release: %s" \
% (drive_name, vendor, model, release))
# Show CD-Text for an audio CD
cdt = d.get_cdtext()
i_tracks = d.get_num_tracks()
i_first_track = pycdio.get_first_track_num(d.cd)
for t in range(i_first_track, i_tracks + i_first_track):
for i in range(pycdio.MIN_CDTEXT_FIELD, pycdio.MAX_CDTEXT_FIELDS):
value = cdt.get(i, t)
# value can be empty but exist, compared to NULL values
if value is not None:
print("\t%s: %s" % (pycdio.cdtext_field2str(i), value))
pass
pass
pass
return
d.close()
Other sample code can be found in the *example* directory of the distribution.
Requirements
=============
* A C compiler so the extension can be compiled when it is installed.
* libcdio (http://www.gnu.org/software/libcdio) and it's header files installed.
* SWIG http://www.swig.org
* pkg-config http://pkg-config.freedesktop.org
To build on Debian (e.g. Ubuntu):
-------------------------------------
::
$ apt-get install python-dev
$ apt-get install libcdio-dev
$ apt-get install libiso9660-dev
$ apt-get install swig pkg-config
$ pip install -e .
$ make check
SWIG Problems
===============
I've tried to make this work back to Python 2.3 or so.
I've noticed however problems in various distutils.
If you see a message like this when running `make check`:
::
File "/home/rocky/.pyenv/versions/3.5.6/lib/python3.5/distutils/unixccompiler.py", line 207, in library_dir_option
return "-L" + dir
TypeError: Can't convert 'bytes' object to str implicitly
Copy in a recent distutils `unixccompiler.py` like this:
::
$ cp admin-tools/unixccompiler.py /home/rocky/.pyenv/versions/3.5.6/lib/python3.5/distutils/unixccompiler.py
The distutils distribution says that it tries to be compatible with all Python versions from 2.3. The
`unixccompiler.py` in `admin_tools` is from the Python 3.7.4 distribution.
Completeness
=============
*libcdio* is rather large and yet may still grow a bit.
What is in *pycdio* is incomplete; over time it may grow to completion
depending on various factors: e.g. interest, whether others help
out.
Sections of *libcdio* that are currently missing are the (SCSI) MMC
commands, and the cdparanoia library. Of the audio controls, I put in
those things that didn't require any thought. The ISO 9660 library is
pretty complete, except file *stat()* information which is at present is
pretty minimal.
That said, what's in there is very usable. It contains probably more
access capabilities than what most media players that don't use
libcdio have.
The encapsulation by SWIG is done in two parts. The lower-level python
interface is called pycdio and is generated by SWIG.
The more object-oriented module is *cdio*; it is a Python class that
uses pycdio. Although pycdio is perfectly usable on its own, it is
expected that *cdio* is what most people will use. As *pycdio* more
closely models the C interface, it is conceivable (if unlikely) that
diehard libcdio C users who are very familiar with that interface
could prefer that.
It is probably possible to change the SWIG in such a way to combine
these pieces. However there are the problems. First, I'm not that much
of a SWIG expert. Second it looks as though the resulting SWIG code
would be more complex. Third the separation makes translation very
straight forward to understand and maintain: first get what's in C
into Python as a one-to-one translation. Then we implement some nice
abstraction off of that. The abstraction can be modified without
having to redo the underlying translation. (But the reverse is
generally not true: usually changes to the C-to-python translation,
pycdio, do result in small, but obvious and straightforward changes to
the abstraction layer cdio.)
There is much to be done - you want to help out, please do so!
Standalone documentation is missing although many of the methods,
classes and functions have some document strings. See also the
programs in the example directory.
pycdio for enterprise
=====================
Available as part of the Tidelift Subscription.
The maintainers of pycdio and thousands of other packages are working with Tidelift to deliver commercial support and maintenance for the open source dependencies you use to build your applications. Save time, reduce risk, and improve code health, while paying the maintainers of the exact dependencies you use. `Learn more. <https://tidelift.com/subscription/pkg/pypi-pycdio?utm_source=pypi-pycdio&utm_medium=referral&utm_campaign=readme>`_
Security contact information
============================
To report a security vulnerability, please use the `Tidelift security contact <https://tidelift.com/security>`_ and Tidelift will coordinate the fix and disclosure.
.. |Package Status 1| image:: https://repology.org/badge/tiny-repos/pycdio.svg
:target: https://repology.org/project/pycdio/versions
.. |Package Status 2| image:: https://repology.org/badge/tiny-repos/python:pycdio.svg
:target: https://repology.org/project/pycdio/versions
.. |Pypi Installs| image:: https://pepy.tech/badge/pycdio
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Save time, reduce risk, and improve code health, while paying the maintainers of the exact dependencies you use. `Learn more. <https://tidelift.com/subscription/pkg/pypi-pycdio?utm_source=pypi-pycdio&utm_medium=referral&utm_campaign=readme>`_\n\nSecurity contact information\n============================\n\nTo report a security vulnerability, please use the `Tidelift security contact <https://tidelift.com/security>`_ and Tidelift will coordinate the fix and disclosure.\n\n.. |Package Status 1| image:: https://repology.org/badge/tiny-repos/pycdio.svg\n\t\t :target: https://repology.org/project/pycdio/versions\n.. |Package Status 2| image:: https://repology.org/badge/tiny-repos/python:pycdio.svg\n\t\t :target: https://repology.org/project/pycdio/versions\n.. |Pypi Installs| image:: https://pepy.tech/badge/pycdio",
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