iOS Question Audio Streaming

[Jmu5667]

Hello All

We have a PTT app in B4A and are looking at the possibility of porting it to B4I. We use the Audio streamer lib and get the audio buffers in the AudioStream_RecordBuffer event as a data() bytes array. This is a must and we compress the audio using aLaw and are currently working on G729 codec. Does anyone have any insights ? I know the the iMedia library does not provide the record buffer event, and the min sample rate is 11025, on the B4a we have a sample rate of 8000.

thanks for reading

John.

 

[Erel]

I don't have a very good suggestion for you. You might be able to use AudioRecord + RandomAccessFile + Timer to read the newly written data.

 

[Blueforcer]

Hello All

We have a PTT app in B4A and are looking at the possibility of porting it to B4I. We use the Audio streamer lib and get the audio buffers in the AudioStream_RecordBuffer event as a data() bytes array. This is a must and we compress the audio using aLaw and are currently working on G729 codec. Does anyone have any insights ? I know the the iMedia library does not provide the record buffer event, and the min sample rate is 11025, on the B4a we have a sample rate of 8000.

thanks for reading

John.

Hey Jmu5667!

did you find a good solution?
i found this

AVAudioRecorder in Swift 3: Get Byte stream instead of saving to file

I am new to iOS programming and I want to port an Android app to iOS using Swift 3. The core functionality of the app is to read the byte stream from the microphone and to process this stream live....

stackoverflow.com

but dont know how to use it in B4I

i need to use it as in this example:

[B4X] Audio Over MQTT

Hi everyone, I attached simple example for streaming audio from B4A to B4J over internet using MQTT. Enjoy without limitations of Server/Client problems over internet such as ISP block. You can use this approach to create a lot of things such as Radio station, voice call, etc ...

www.b4x.com

 

[Jmu5667]

One of our engineers is working on this. It's not a priority so we have not invested much time in it. When we have a viable solution I will make a post for the benifit of the community.

Regards

John.