I have a question about AudioTrackInterface.

[hsnks100]

First, I appreciate you reason why I got your help about my project.

I am going to implementation webrtc-h264capturer with Audio.

I additionally am going to implementation following code.

#if 0
    rtc::scoped_refptr<webrtc::AudioTrackInterface> audio_track(
            peer_connection_factory_->CreateAudioTrack(
                kAudioLabel, peer_connection_factory_->CreateAudioSource(NULL)));
#endif
...
    //stream->AddTrack(audio_track);

I searched about CreateAudioSource, but I can't found this issue.
We have some audio codes such as "g711a", "g711u", "adpcm", "g726", "pcm".

How do I implementation CreateAudioSource's param? I now assume that it can implementation capturer like what I combine between h264encoder, ffmpeg. right?

I am waiting to your help. If You can't help me directly, I just want to get some links.

Thank you in advance.

[nicotyze]

Unfortunately, I've never explored the audio side and I don't have time to do it so far. It would be great if you could share your achievements on that.

[hsnks100]

Thank you for answering about my issue.
Do you have more information about audio codecs? I have hard try to implementation audio communication in bidirection. But I have no even achivement.

My device environment is embedded, It has't available audio device. I just want to get audio track in binary data because my device has external audio encoder/audio decoder.

Some devices have available audio device, When I execute "gn gen" gn gen args='... rtc_use_dummy_audio_file_devices=false', I can get audio stream in callback function called OnData(...)

But in rtc_use_dummy_audio_file_devices=true, I can't get audio stream. And I got following logs.

...
(audio_device_impl.cc:1161): SetPlayoutDevice(0)
(audio_device_alsa_linux.cc:803): number of available audio output devices is 0
(audio_device_impl.cc:515): InitSpeaker
(audio_device_alsa_linux.cc:1780): GetDevicesInfo - Could not find device name or numbers
(audio_mixer_manager_alsa_linux.cc:145): AudioMixerManagerLinuxALSA::OpenSpeaker(name=)
(audio_mixer_manager_alsa_linux.cc:190): snd_mixer_attach(_outputMixerHandle, )
ALSA lib control.c:909:(snd_ctl_open_noupdate) Invalid CTL 
(audio_mixer_manager_alsa_linux.cc:196): snd_mixer_attach(_outputMixerHandle, ) error: No such file or directory
(webrtcvoiceengine.cc:703): webrtc: Init() failed to initialize the speaker (error=9005)
(audio_device_impl.cc:1256): SetRecordingDevice(0)
(audio_device_alsa_linux.cc:887): number of availiable audio input devices is 0
(audio_device_impl.cc:525): InitMicrophone
(audio_device_alsa_linux.cc:1780): GetDevicesInfo - Could not find device name or numbers
(audio_mixer_manager_alsa_linux.cc:230): AudioMixerManagerLinuxALSA::OpenMicrophone(name=)
(audio_mixer_manager_alsa_linux.cc:280): snd_mixer_attach(_inputMixerHandle, )
ALSA lib control.c:909:(snd_ctl_open_noupdate) Invalid CTL 
(audio_mixer_manager_alsa_linux.cc:286): snd_mixer_attach(_inputMixerHandle, ) error: No such file or directory
(webrtcvoiceengine.cc:703): webrtc: Init() failed to initialize the microphone (error=9004)
(audio_device_impl.cc:970): StereoPlayoutIsAvailable
(audio_device_alsa_linux.cc:1780): GetDevicesInfo - Could not find device name or numbers
(audio_mixer_manager_alsa_linux.cc:145): AudioMixerManagerLinuxALSA::OpenSpeaker(name=)
(audio_mixer_manager_alsa_linux.cc:190): snd_mixer_attach(_outputMixerHandle, )
ALSA lib control.c:909:(snd_ctl_open_noupdate) Invalid CTL 
(audio_mixer_manager_alsa_linux.cc:196): snd_mixer_attach(_outputMixerHandle, ) error: No such file or directory
(audio_device_alsa_linux.cc:999): InitSpeaker() failed
(audio_device_alsa_linux.cc:1780): GetDevicesInfo - Could not find device name or numbers
(audio_device_alsa_linux.cc:1022): InitPlayout open ()
...

Thank you for reading my problems.