Changes between Version 97 and Version 98 of FAQ

Timestamp:

Aug 13, 2010 11:56:21 AM (14 years ago)

Author:

nanang

Comment:

Fix broken links to pjmedia_port doc

FAQ

@@ -436 +436 @@
 === How can I manipulate audio samples directly? === #audio-man
 
-In PJMEDIA, audio frames are sent back and forth between what is called [http://www.pjsip.org/pjmedia/docs/html/group__PJMEDIA__PORT__CONCEPT.htm media port (pjmedia_port)]. So to be able to peek or manipulate audio frames, we need to implement our own media port.
+In PJMEDIA, audio frames are sent back and forth between what is called [http://www.pjsip.org/pjmedia/docs/html/group__PJMEDIA__PORT.htm media port (pjmedia_port)]. So to be able to peek or manipulate audio frames, we need to implement our own media port.
 
 Implementing media port should be easy. Basically we just need to implement these:
@@ -450 +450 @@
   };
 }}}
- 1. Fill in the media port information to describe the media port (like, the name, clock rate, bits per sample, etc.). Use [http://www.pjsip.org/pjmedia/docs/html/group__PJMEDIA__PORT__INTERFACE.htm#gb3259d2924c7a2243733391f6f8f0a9a pjmedia_port_info_init()] to initialize the port into.
+ 1. Fill in the media port information to describe the media port (like, the name, clock rate, bits per sample, etc.). Use [http://www.pjsip.org/pjmedia/docs/html/group__PJMEDIA__PORT.htm#gb3259d2924c7a2243733391f6f8f0a9a pjmedia_port_info_init()] to initialize the port into.
  1. Implement {{{get_frame()}}} callback (of the ''pjmedia_port'') if the media port is a source (that is, the media port feed audio frames to other media ports).
  1. Implement {{{put_frame()}}} callback (of the ''pjmedia_port'') if the media port is a sink (that is, other media ports may feed audio frames to our media port).
@@ -614 +614 @@
 
 Currently PJMEDIA lacks built-in tone detection routine. But if you you have the routine, it shouldn't be straightforward to integrate it to the framework:
- 1. First, you need to wrap your routine as [http://www.pjsip.org/pjmedia/docs/html/group__PJMEDIA__PORT__CONCEPT.htm pjmedia_port] so that it can be plugged to the media framework. Your implementation would be similar to [http://www.pjsip.org/pjmedia/docs/html/group__PJMEDIA__FILE__REC.htm WAV writer] media port ([source:pjproject/trunk/pjmedia/src/pjmedia/wav_writer.c pjmedia/wav_writer.c]), but instead of writing to WAV file, it would monitor the audio signal for tone and call some callback when a tone is detected.
+ 1. First, you need to wrap your routine as [http://www.pjsip.org/pjmedia/docs/html/group__PJMEDIA__PORT.htm pjmedia_port] so that it can be plugged to the media framework. Your implementation would be similar to [http://www.pjsip.org/pjmedia/docs/html/group__PJMEDIA__FILE__REC.htm WAV writer] media port ([source:pjproject/trunk/pjmedia/src/pjmedia/wav_writer.c pjmedia/wav_writer.c]), but instead of writing to WAV file, it would monitor the audio signal for tone and call some callback when a tone is detected.
  1. Once you have the tone detector media port implementation, you can just add this media port to the conference bridge with [http://www.pjsip.org/pjsip/docs/html/group__PJSUA__LIB__MEDIA.htm#g833528c1019f4ab5c8fb216b4b5f788b pjsua_conf_add_port()], and connect the audio source to your tone detector.