Changes between Initial Version and Version 5 of Ticket #680


Ignore:
Timestamp:
Jan 13, 2009 9:30:19 AM (12 years ago)
Author:
bennylp
Comment:

Note that the fixes above have been copied to the 1.0 branch.

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  • Ticket #680

    • Property Status changed from new to closed
    • Property Summary changed from Frame time issues in Symbian APS sound implementation. to Detection of handset's frame ptime in APS
    • Property Resolution changed from to fixed
    • Property Milestone changed from unassigned to release-1.1
  • Ticket #680 – Description

    initial v5  
    1 Known issues: 
    2  1. Currently 'samples_per_frame' param of pjmedia_snd_open() is 'ignored'. 
    3  2. Special G.711 frame time on N95 firmware v2.0.015 and the Nokia N95 8GB, it is 10ms, while on other device it is 20ms. There is no way of resolving the frame size used by a codec until the stream is started. Details can be found [http://wiki.forum.nokia.com/index.php/KIS000796_-_Frame_length_variation_for_G.711_encoder here] (Thanks Tonjun Banaag for the report). 
     1With APS, devices may return different audio frame ptime (either 10ms or 20ms), depending on the handset or in some cases perhaps even the firmware version of the same handset. Details can be found [http://wiki.forum.nokia.com/index.php/KIS000796_-_Frame_length_variation_for_G.711_encoder here] (Thanks Tonjun Banaag for the report). 
    42 
     3The APS implementation needs to be able to detect which frame size the device uses, or otherwise the audio will be distorted. 
     4 
     5Also currently 'samples_per_frame' param of pjmedia_snd_open() is ignored. This needs to be fixed as well.