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Modern README.md
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Moritz Grimm
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README
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README
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ezstream README
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---------------------------------------
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ABOUT EZSTREAM
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::::::::::::::::
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Ezstream is a command line source client for Icecast media streaming servers.
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It began as the successor of the old "shout" utility, and has since gained a
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lot of useful features.
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In its basic mode of operation, it streams media files or data from standard
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input without re-encoding and thus requires only very little CPU resources. It
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can also use various external decoders and encoders to re-encode from one
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format to another, and stream the result to an Icecast server. With re-
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encoding enabled, ezstream is a very flexible source client.
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Supported media formats for streaming are Ogg, MP3, WebM, and Matroska.
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Ezstream natively supports metadata in MP3 (ID3v1 only) and Ogg Vorbis, or
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many more formats when it is built with the TagLib option.
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Ezstream is free software and licensed under the GNU General Public License.
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See the COPYING file for details.
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PREREQUISITES
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:::::::::::::::
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Ezstream depends on:
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* libshout 2.x
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(http://www.icecast.org/)
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* libxml 2.x
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(http://xmlsoft.org/)
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* TagLib 1.x (1.4 or newer recommended, will be used via the libtag_c
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wrapper)
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(https://taglib.github.io/)
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* Check Unit testing framework for C
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(https://libcheck.github.io/check)
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Ezstream optionally uses:
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- For basic non-ASCII charset support in metadata and filenames:
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* Libiconv, if iconv() is not available in the system libc.
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(https://www.gnu.org/software/libiconv/)
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INSTALLATION
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::::::::::::::
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The ezstream software uses the GNU auto-tools to configure, build and install
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on a variety of systems. Aside from the standard autoconf options of the
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configure script, a couple of additional options are available:
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--enable-examplesdir=DIR
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example configuration files installation directory
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(default: DATADIR/examples/ezstream)
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--with-libshout=PFX prefix where the libshout header files and library
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are installed (default: autodetect)
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--with-libshout-includes=DIR
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directory where libshout header files are installed
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(optional)
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--with-libshout-libs=DIR
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directory where libshout is installed (optional)
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--with-libxml2=PFX prefix where the libxml2 header files and library
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are installed (default: autodetect)
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--with-libxml2-includes=DIR
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directory where libxml2 header files are installed
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(optional)
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--with-libxml2-libs=DIR directory where libxml2 is installed (optional)
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--with-taglib=PFX prefix where the TagLib header files and library are
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installed (default: autodetect)
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--with-taglib-includes=DIR
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directory where TagLib header files are installed
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(optional)
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--with-taglib-libs=DIR directory where TagLib is installed (optional)
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--with-libvorbis=PFX prefix where the Vorbis library header files and
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library are installed (default: autodetect)
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--with-libvorbis-includes=DIR
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directory where Vorbis library header files are
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installed (optional)
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--with-libvorbis-libs=DIR
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directory where the Vorbis libraries are installed
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(optional)
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--with-libiconv-prefix[=DIR] search for libiconv in DIR/include and DIR/lib
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--without-libiconv-prefix don't search for libiconv in includedir and libdir
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The compilation and installation process then boils down to the usual
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$ ./configure --help | less # Skim over the available options
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$ ./configure [options] && make && [sudo] make install
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# Configure, build and install
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# [as root] the software
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If this procedure is unfamiliar to you, please consult the INSTALL file for
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more detailed instructions.
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On systems where the libshout installation does not include the required
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shout.pc file for pkg-config(1), the non-standard ``shout-config'' utility
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is available. However, the ezstream build system does not support the latter.
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If this is an issue, configure ezstream with
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$ ./configure \
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LIBSHOUT_CPPFLAGS="$(shout-config --cppflags)" \
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LIBSHOUT_CFLAGS="$(shout-config --cflags-only)" \
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LIBSHOUT_LIBS="$(shout-config --libs)"
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When the configuration keeps failing despite having all dependencies
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installed, take note of the more verbose error messages in config.log. If
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necessary, it is possible to further customize many build flags through
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environment variables. See the "influential environment variables" list
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in the --help output.
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To bootstrap a fresh checkout from source control, run the `autogen.sh`
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script.
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USAGE
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:::::::
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Once ezstream is successfully installed, type "man ezstream" (without quotes)
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on the command line for a comprehensive manual. This distribution package also
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comes with example configuration files that can be used as a guide to
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configure ezstream.
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Note that all by itself, ezstream is not particularly useful. It requires a
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running Icecast server to stream to, which then relays the stream to many
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listeners. If this comes as a surprise, browse to http://www.icecast.org/ for
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a lot more information, resources, and other source clients.
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EXTERNAL DECODERS/ENCODERS
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::::::::::::::::::::::::::::
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Ezstream should be able to work with any media decoder and encoder that
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fulfills the following requirements:
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1. It needs to be executable on the command line and not require a graphical
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display to function.
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2.1. A decoder needs to be capable of sending RAW data to standard output.
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2.2. An encoder needs to be capable of reading RAW data from standard input.
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2.3. A combined de-/encoder needs to be capable of sending media data that
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can be streamed to standard output.
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Media formats that ezstream does not support directly are passed through
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unaltered. Whether they work or not depends on the level of support offered by
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the version of libshout ezstream is linked with.
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The following incomplete list of programs shows a few that are known to work.
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These are also used in the example configuration files:
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* MP3
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- Decoder: madplay (http://mad.sf.net/)
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- Encoder: lame (http://lame.sf.net/)
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* Ogg Vorbis:
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- Decoder: oggdec
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- Encoder: oggenc
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Both utilities are in the vorbis-tools package (http://www.vorbis.com/).
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* FLAC:
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- Decoder: flac (http://flac.sf.net/)
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- Encoder: (None. Not supported by libshout at the time of writing, and
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thus cannot be used by ezstream.)
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* Ogg Theora:
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- Decoder/Encoder: ffmpeg2theora (http://v2v.cc/~j/ffmpeg2theora/)
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DEVELOPMENT
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:::::::::::::
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* GitHub mirror: https://github.com/xiph/ezstream
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* Travis CI: https://travis-ci.org/xiph/ezstream
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* CircleCI: https://circleci.com/gh/xiph/ezstream
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* Codecov: https://codecov.io/gh/xiph/ezstream
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* Codacy: https://www.codacy.com/app/mgrimm/ezstream
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* Coverity: https://scan.coverity.com/projects/xiph-ezstream
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131
README.md
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131
README.md
Normal file
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@ -0,0 +1,131 @@
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# About
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Ezstream is a command line source client for media streams, primarily for
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Icecast servers.
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It allows the creation of media streams based on input from files or standard
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input that is piped through an optional external de- and encoder. As every
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part of this chain is highly configurable, ezstream can be useful in a large
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number of streaming setups.
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It uses the libshout library to communicate with streaming servers and
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currently supports Ogg, MP3, WebM, and Matroska streams using the HTTP, ICY,
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and RoarAudio protocols. It uses TagLib to read and manage metadata in
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numerous media files.
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Ezstream is free software and licensed under the GNU General Public License.
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See the COPYING file for details.
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# Prerequisites
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Ezstream depends on:
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* libshout 2.x
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(https://www.icecast.org/)
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* libxml 2.x
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(http://xmlsoft.org/)
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* TagLib 1.x (1.4 or newer recommended, will be used via the libtag_c
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wrapper)
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(https://taglib.github.io/)
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* Check Unit testing framework for C
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(https://libcheck.github.io/check)
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Ezstream optionally uses:
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* For basic non-ASCII charset support in metadata and filenames:
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- Libiconv, if iconv() is not available in the system libc.
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(https://www.gnu.org/software/libiconv/)
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# Installation
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The ezstream software uses the GNU auto-tools to configure, build, and
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install on a variety of systems. Several (additional) configuration options
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are available.
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Run `./configure --help` to get an overview.
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The compilation and installation process then boils down to the usual
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```console
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$ ./configure --help | less # Skim over the available options
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$ ./configure [options] && make && [sudo] make install
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# Configure, build and install
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# [as root] the software
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```
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If this procedure is unfamiliar to you, please consult the `INSTALL` file for
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more detailed instructions.
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On systems where the libshout installation does not include the required
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shout.pc file for `pkg-config(1)`, the non-standard `shout-config` utility
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is available. However, the ezstream build system does not support the latter.
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If this is an issue, configure ezstream with
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```console
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$ ./configure \
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LIBSHOUT_CPPFLAGS="$(shout-config --cppflags)" \
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LIBSHOUT_CFLAGS="$(shout-config --cflags-only)" \
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LIBSHOUT_LIBS="$(shout-config --libs)"
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```
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If needed, verbose configuration error messages can be found in the
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`config.log` file.
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When working on a fresh checkout from source control, the `autogen.sh` script
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must be run first. It requires automake, autoconf, libtool, and gettext.
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# Usage
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Once ezstream is installed successfully, type `man ezstream` on the command
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line for a comprehensive manual. This distribution package also comes with
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example configuration files that can be used as a guide to configure
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ezstream.
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As ezstream is a source client, a media streaming server like Icecast
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must be available to distribute the stream to listening clients. See
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(https://www.icecast.org/) for more information and resources.
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# External Decoders/Encoders
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Ezstream should be able to work with any media decoder and encoder that
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fulfills the following requirements:
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1. Must be an executable that can be run from the command line without the
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need for a graphical display or terminal
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2. Decoding software must be able to either
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1. write raw audio data to standard output, or
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2. write a properly encoded stream ready for distribution to standard
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output
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3. Encoding software must be able to read raw audio data from standard input
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The following incomplete list of programs shows a few that are known to work.
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These are also used in the example configuration files:
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* MP3
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- Decoder: madplay (https://www.underbit.com/products/mad/)
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- Encoder: lame (https://lame.sourceforge.io/)
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* Ogg Vorbis (https://xiph.org/vorbis/):
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- Decoder: oggdec
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- Encoder: oggenc
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* FLAC (https://xiph.org/flac/):
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- Decoder: flac
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- Encoder: flac (requires Ogg FLAC output)
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* Ogg Theora:
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- Decoder/Encoder: ffmpeg2theora (http://v2v.cc/~j/ffmpeg2theora/)
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# Development
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* Xiph.org Gitlab: https://gitlab.xiph.org/xiph/ezstream/
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* GitHub mirror: https://github.com/xiph/ezstream/
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* Travis CI: https://travis-ci.org/xiph/ezstream/
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* CircleCI: https://circleci.com/gh/xiph/ezstream/
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* Codecov: https://codecov.io/gh/xiph/ezstream/
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* Codacy: https://www.codacy.com/app/mgrimm/ezstream/
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* Coverity: https://scan.coverity.com/projects/xiph-ezstream/
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