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This is Linphone, a free (GPL) video softphone based on the SIP protocol.

******************Building linphone ***********************************
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- you need at least:
		- libosip2>=3.0.3
		- libeXosip2>=3.0.3
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		- speex>=1.2.0 (including libspeexdsp part)
		- libreadline (optional: for convenient command line in linphonec)
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	+ gsm codec (gsm source package or libgsm-dev or gsm-devel) (optional)
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	+ if you want to gtk/glade interface:
		- gtk>=2.16.0
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	+ if you want video support:
		- SDL>=1.2.10
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		- libavcodec (ffmpeg) 
		- libswscale (part of ffmpeg too) for better scaling performance
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		- theora (optional)
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	+ if you want uPnP support:
		- libupnp
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with their corresponding -dev or -devel package if you don't use source packages.

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For windows compilation see README.mingw.
For macOS X, see README.macos
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******************************** notes for developers: *****************************
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Here is a short description of the content of the source tree.

- oRTP/ is a poweful implementation of the RTP protocol. See the oRTP/README for more details. 
	It is used by the mediastreamer to send and receive streams to the network.

- mediastreamer2/ is one of the important part of linphone. It is a framework library for audio 
	and video processing. It contains several objects for grabing audio and video and outputing
	it (through rtp, to file).
	It contains also codec objects to compress audio and video streams.
  The mediastream.h files contain routines to easyly setup audio streams.

- coreapi/ is the central point of linphone, which handles relationship between sip signalisation and media
  streaming. It contains an easy to use api to create a sip phone.

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- gtk/	is the directory that contains the gui frontend of linphone. It uses all libraries descibed above.
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- console/
	* linphonec.c is the main file for the console version of linphone.
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	* sipomatic.c / sipomatic.h contains the code for sipomatic, the test program that auto-answer to linphone calls.
	* shell.c (program name: linphonecsh) is a small utilities to send interactive commands to a running linphonec daemon.
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- share/ contains translation, documentation, rings and hello sound files.