audio on the website

[hag...@gmail.com]

I am experimenting with websockets and mjpegcanvas. Now have webcam-images streaming on a webpage, and I wondered if it is possible to stream audio to the website also (from an audio_common stream).

Does anybody have experience with this?

Greetings, Edward

[Chad Jenkins]

Hi Edward,

I am not aware of anyone working on playing audio in browser using rosbridge.  I imagine you could write a JavaScript widget that emulates the behavior of audio_play.cpp:

  https://kforge.ros.org/audiocommon/audio_common/file/13166e69e1ee/audio_play/src/audio_play.cpp

using HTML5 audio streaming:

  http://www.rackspace.com/knowledge_center/article/streaming-audio-and-video-with-html-5

but this is just a guess.

Chad
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[Russell Toris]

Hi Edward-

Also to my knowledge, no one has done streaming audio to the browser from ROS. I am not sure how this would work over a web-socket connection. It may be possible by fooling around with the <audio> tag's API and feeding it the MP3 frames from rosbridge, but I honestly have never tried.

If that fails, another solution could be to create a mp3_streamer in ROS, much like mjpeg_server, and connect the browser's <audio> tag directly to the mp3_streamer.

For web browser specific questions, be sure to check out discussions on robot-w...@googlegroups.com as well!

Best,

Russell

--
Russell Toris
Graduate Student | WPI Department of Computer Science
rct...@wpi.edu | http://users.wpi.edu/~rctoris/