asdlei99 / emiplib

EDM Media over IP Library - streaming audio and video

EMIPLIB

Introduction

The name EMIPLIB means 'EDM Media over IP library'. This library was developed at the Expertise Centre for Digital Media (EDM), a research institute of the Hasselt University. As the name suggests the goal of the library is to make it easier to stream several kinds of media, including (but not limited to) audio and video. For more detailed information about the library, please refer to the library documentation.

License

The license that applies to the library is the LGPL. However, it is possible to specify that you wish to use GPL licensed components as well, which then causes the GPL to apply to the entire library. The license texts of these two licenses can be found in the files LICENSE.LGPLand LICENSE.GPL of the source code archive.

Note that when creating an application, you have to take the licenses of other libraries into account too. For example, if your application uses the Qt component and you accepted the GPL license for the Qt library, linking with the Qt library requires your application to be GPL too. Similarly, if your version of libavcodec was compiled as a GPL library, using the libavcodec component of emiplib will require your application to be GPL too, since you'll need to link against your GPL version of libavcodec.

Installation

The library depends on the JThread and JRTPLIB libraries, which can be found at the following sites:

• http://research.edm.uhasselt.be/jori/jthread
• http://research.edm.uhasselt.be/jori/jrtplib

Note that for this version, at least JThread 1.3.0 and JRTPLIB 3.10.0 are required.

The compilation of the library can be done using the CMake build system. In case extra include directories or libraries are needed, you can use the ADDITIONAL_ CMake variables to specify these. They will be stored in both the resulting EMIPLIB CMake configuration file and the pkg-config file.

For example, to be able to compile the DirectShow video input component, you may need to enter something like this in the ADDITIONAL_INCLUDE_DIRS variable:

C:/Program Files (x86)/Microsoft SDKs/Windows/v7.0A/Include;
C:/Program Files (x86)/Microsoft DirectX SDK (August 2007)/Include

And something like this in the ADDITIONAL_LIBRARIES_GENERAL variable:

C:/Program Files (x86)/Microsoft SDKs/Windows/v7.0A/Lib/strmiids.lib

To install JThread, JRTPLIB and EMIPLIB in a MS-Windows environment, an easy way is the following. For each project, use the same installation directory, and specify it using the CMake CMAKE_INSTALL_PREFIX variable before running the CMake configure step. If you then build and install JThread and JRTPLIB, the EMIPLIB configure step should be able to detect them without any problem.

Contact

The library home page can be found at http://research.edm.uhasselt.be/emiplib/, documentation is available at emiplib.readthedocs.io.

Questions, comments and bug reports can be sent to [email protected]

Acknowledgments

We would like to thank Jutta Degener and Carsten Bormann for writing their GSM codec and allowing us to include it in EMIPLIB. The copyright and disclaimer of the GSM codec can be found in the file src/thirdparty/gsm/COPYRIGHT.

We would also like to thank Ron Frederick for making his LPC codec available to the public and for allowing us to include a derived version in this library.

The component which converts JPEG data into an uncompressed image uses the Tiny Jpeg Decoder by Luc Saillard. Thanks for making this publically available. Please see the source code in src/thirdparty/tinyjpeg for more information about copyright and disclaimer.