83 lines
3.0 KiB
Plaintext
83 lines
3.0 KiB
Plaintext
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libraw1394
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==========
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1. About libraw1394
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libraw1394 is the only supported interface to the kernel side raw1394 of
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the Linux IEEE-1394 subsystem, which provides direct access to the connected
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1394 buses to user space. Through libraw1394/raw1394, applications can directly
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send to and receive from other nodes without requiring a kernel driver for the
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protocol in question.
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The reason for making a library the interface to the kernel is to avoid
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a program dependency on the kernel version, which would hinder development and
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optimization of raw1394. If development changed the protocol and made it
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incompatible with previous versions only the libraw1394 has to be upgraded to
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match the kernel version (instead of all applications).
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Since version 2, libraw1394 also works with the kernel driver
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firewire-core. libraw1394's role has thus become that of a raw1394
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compatibility layer for existing applications when running on firewire-core.
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2. Copyleft
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libraw1394 itself is licensed under the Lesser General Public License
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(short LGPL, see file COPYING.LIB in the source distribution). Other files in
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the source archives not belonging to but being part of the build procedure of
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libraw1394 are under their own licenses, as stated at the top of the individual
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files.
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3. API documentation
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Finally there is something, in the doc subdirectory. The file is
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libraw1394.sgml (it's Docbook format), and there are preformatted PostScript and
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HTML available. This documentation is not complete yet.
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4. Multithreading
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This library should be multithreadable with the restriction that one
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raw1394handle_t may be used only within a single thread. Multiple threads
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operating on the same handle would royally mess up the kernel-user protocol.
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Simply use separate handles for each thread in which you need to use libraw1394.
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5. Pkg-config
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The library comes with a pkg-config .pc file, so you can check for
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libraw1394 and its version in your configure script. For example, here is how
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to use the autoconf macro:
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PKG_CHECK_MODULES(LIBRAW1394, libraw1394 >= 1.1.0)
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This macro sets the variables LIBRAW1394_CFLAGS and LIBRAW1394_LIBS. You
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have to include those into your build variables so that the build process
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correctly links with libraw1394.
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6. Contact
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Send questions, suggestions, bug reports and patches to the mailing
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list linux1394-devel@lists.sourceforge.net. This list is open for posting
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without prior subscription, and replies will usually be Cc'd to you. Visit
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http://ieee1394.wiki.kernel.org/ for links to list subscription interfaces and
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list archives.
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Maintainer of libraw1394 is currently Stefan Richter. See the file
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AUTHORS for a complete list of contributors to libraw1394.
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Source repository:
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git://git.kernel.org/pub/scm/libs/ieee1394/libraw1394.git
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http://git.kernel.org/pub/scm/libs/ieee1394/libraw1394.git
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https://git.kernel.org/pub/scm/libs/ieee1394/libraw1394.git
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Gitweb:
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http://git.kernel.org/?p=libs/ieee1394/libraw1394.git
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Release tarballs:
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https://www.kernel.org/pub/linux/libs/ieee1394/
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ftp://ftp.kernel.org/pub/linux/libs/ieee1394/
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