[vlc-devel] Patches to add support for speex codec in RTP

[Hawkins, William - AES]

Good morning! 

I would like to submit these patches that will add support to VideoLAN for sending/receiving a Speex encoded audio stream via RTP. The patches make changes to the following files:

speex.c: A new decoder function is written for Speex packets that are received via RTP.
live555.cpp: A change was made so that the audio/speex MIME type is recognized and properly handled during RTSP initialization.
rtp.c: A new output function was added to properly insert Speex content into RTP packets.
dec.c: A small change was made so that pre-existing audio output format information would be saved.
es_out.c: I used a -1 value for the i_extra field of the es_format_t structure to indicate that the Speex audio originated from an RTP stream. The modifications here ensure that a value of -1 does not start a deep copy of the data pointed to by p_extra. 

I tried to follow the VLC coding conventions as best as possible. I am sure that there are things that more seasoned VLC developers will notice that I have done wrong. I welcome corrections and feedback. I hope that the community finds this useful. I am excited to work with everyone to get this code included in such a great open-source tool.

Thanks,
Will


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