NON-A2DP codec selection over SBC in BlueZ/Android2.3

ashish meena

Hello All,

I have successfully integrated one NON-A2DP codec in liba2dp.c/BlueZ. This non-a2dp codec get selected when we use supported headset as soon as we start audio stream.

However, I would like to get non-a2dp codec selected right from the begning of pairing mode.

For now, In the beginning it is paired and connected with SBC as default and when I start stream, non-a2dp get selected as I have given it priority non-a2dp codec over SBC liba2dp.c.

Now questions, where I have to amend the code in Android/BlueZ source to tree to get non-a2dp selected as default from the beginning like SBC does ?

Thanks in advance for any pointers.

over 14 years ago

0 Satish Patel over 14 years ago

TI__Expert 4390 points

Hi Ashish,

It is good that you have integrated different solution to bluez.

But In order to not impact existing flow of a2dp, I would recommend to use system property in the code. Which will help to decided which path should be taken based on property value.

You can refer to #http://rxwen.blogspot.com/2010/01/android-property-system.html to use system property.

satish

0 Satish Patel over 14 years ago in reply to Satish Patel

TI__Expert 4390 points

Hi Ashish,

In addition to that...

refer to file

framework/base/media/libstagefright/OMXCodec.cpp

=============

static const char *audioCodingTypeString(OMX_AUDIO_CODINGTYPE type) {

static const char *kNames[] = {

=========================

Here you can add you customize component to use. But be sure you are putting in some flags :)

0 Gowtham Rangarajan over 11 years ago

Prodigy 10 points

Can you let me know how did you integerate NON-A2DP codec into the BlueZ stack .Im also interested in knowing how you achieved the following behaviour :

"This non-a2dp codec get selected when we use supported headset as soon as we start audio stream."

Thanks a lot for the help,

Gowtham

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NON-A2DP codec selection over SBC in BlueZ/Android2.3