How to change codec priority in pjsip android

Question

I am trying to change the priority of codecs used in pjsip android.
I am able to get the codecs priority but after changing the codecs priority,it is not reflecting back.

if( ep != null)
        {
            try {
                CodecInfoVector codecInfoVector = ep.codecEnum();
                if(!codecInfoVector.isEmpty()){
                    System.out.println("Codecs Enabled!!");
                    System.out.println("Number of codecs enabled now: "+codecInfoVector.size());
                    for(int i=0;i<codecInfoVector.size();i++)
                    {
                        CodecInfo codecInfo = codecInfoVector.get(i);
                        String codecId = codecInfo.getCodecId();
                        short codecPriority = 128;//use higher number for making preferred codec first.
                        short disableCodecPriority = 0;//use 0 to disable codec in sdp
                        System.out.println("Codec info now is: "+ codecId);
                        switch(codecId)
                        {
                            case "PCMA/8000/1":
                                if(Dialer_Properties.enablePCMA)
                                    codecInfo.codecSetPriority("PCMA/8000",codecPriority);
                                else
                                    codecInfo.codecSetPriority("PCMA/8000",disableCodecPriority);
                                break;
                            case "PCMU/8000/1":
                                if(Dialer_Properties.enablePCMU)
                                    codecInfo.codecSetPriority("PCMU/8000",codecPriority);
                                else
                                    codecInfo.codecSetPriority("PCMU/8000",disableCodecPriority);
                                break;
                            case "G729/8000/1":
                                if(Dialer_Properties.enableG729)
                                    codecInfo.codecSetPriority("G729/8000",codecPriority);
                                else
                                    codecInfo.codecSetPriority("G729/8000",disableCodecPriority);
                                break;
                        }

                        System.out.println("Codec Priority now is: "+codecInfo.getPriority());
                    }

                }

            } catch (Exception e) {
                e.printStackTrace();
            }
        }

How to fix this issue??

score 2 · Accepted Answer · answered Sep 14 '18 at 09:48

2

After changing the priority,i did not update the codecInfoVector with updated values.
As a result the values was not reflected.

PJSIP provides a method in endpoint java class.
After updating the particular code,i could the see the updated priority codecs in SDP.

ep.codecSetPriority("PCMA/8000",codecPriority);

where ep is endpoint instance object.

answered Sep 14 '18 at 09:48

Jeeva

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How to update codecInfoVector after setting codec priority ? – Himadri Jun 20 '19 at 07:14
@Himadri i used endpoint instance to set codec priority which helped to update the codecInfoVector before i used codecinfo only so it was not reflected – Jeeva Jun 20 '19 at 08:48
I also doing the same. used endpoint instance to set codec priority and found that codec priority not applied – Himadri Jun 20 '19 at 09:56
@Himadri bro then please post your code and ask it as separate question – Jeeva Jun 20 '19 at 09:57

How to change codec priority in pjsip android

1 Answers1