Hello, I posted a while back and learned that there is a limitation whereby a legato audio recorder cannot be connected to a legato audio player. I’m using mangoh Yellow and WP7611 modem. I thought about trying a different approach whereby I try to record/stream via HTTP the audio leaving the modem TX channel.
To do this I use the following API’s:
MdmTxAudioRef = le_audio_OpenModemVoiceTx();
AudioOutputConnectorRef = le_audio_CreateConnector();
AudioOutputConnectorRef2 = le_audio_CreateConnector();
res = le_audio_Connect(AudioOutputConnectorRef , MdmTxAudioRef );
res = le_audio_Connect(AudioOutputConnectorRef2,MdmTxAudioRef);
In the above example, I create a new audio reference for file play, and connect it with AudioOutputConnectorRef. So my wav audio files should play over this connector.
I recently added the AudioOutputConnectorRef2 and connect it to MdmTxAudioRef. I don’t get any errors when connecting everything up. But I believe I see a kernal exception thrown in the logs:
[ 3559.890380] MDM Media1: ASoC: no backend DAIs enabled for MDM Media1
[ 3559.896481] q6asm_callback: cmd = 0x10bcd returned error = 0x1
[ 3559.901769] __q6asm_cmd: DSP returned error[ADSP_EFAILED] opcode 68557
=ERR= | audioDaemon[1784] | buffer_bytes = (2560,2560) omin=0 omax=0 int=1 empty=0 period_bytes = (320,320) omin=0 omax=0 int=1 empty=0
Jul 21 12:14:49 swi-mdm9x28-wp user.debug Legato: DBUG | audioCompExe[2029]/framework T=TransmitSamples | thread.c PThreadStartRoutine() 478 | Set nice level to 0.
Jul 21 12:14:49 swi-mdm9x28-wp user.info Legato: INFO | audioCompExe[2029]/audioComponent T=TransmitSamples | audio.c TransmitAudioSamplesThread() 263 | Tx Thread starting for audiostream with ref: 0x80f.
Jul 21 12:14:49 swi-mdm9x28-wp user.debug Legato: DBUG | audioCompExe[2029]/audioComponent T=TransmitSamples | perfTestLog.h LogPerfString() 9 | Perftest: TransmitSamplesThread Starting Transmit thread.: 2022-07-21 17:14:49.766
Jul 21 12:14:49 swi-mdm9x28-wp user.err Legato: =ERR= | audioDaemon[1784]/alsa_intf T=main | pa_pcm_alsa.c InitPcmPlaybackCapture() 455 | Failed in pcm_prepare
Jul 21 12:14:49 swi-mdm9x28-wp user.err Legato: =ERR= | audioDaemon[1784] | cannot prepare channel: errno =-22
Jul 21 12:14:49 swi-mdm9x28-wp user.err kernel: [ 3559.890380] MDM Media1: ASoC: no backend DAIs enabled for MDM Media1
Jul 21 12:14:49 swi-mdm9x28-wp user.err kernel: [ 3559.896481] q6asm_callback: cmd = 0x10bcd returned error = 0x1
Jul 21 12:14:49 swi-mdm9x28-wp user.err kernel: [ 3559.901769] __q6asm_cmd: DSP returned error[ADSP_EFAILED] opcode 68557
Jul 21 12:14:49 swi-mdm9x28-wp user.err Legato: =ERR= | audioDaemon[1784]/audio T=main | le_media.c le_media_Capture() 2204 | PCM cannot be open
Jul 21 12:14:49 swi-mdm9x28-wp user.debug Legato: DBUG | audioDaemon[1784]/audio T=main | le_media.c le_media_Stop() 2117 | Close pa_pcm
Jul 21 12:14:49 swi-mdm9x28-wp user.debug Legato: DBUG | audioDaemon[1784]/audio T=main | le_media.c le_media_Stop() 2134 | Interface 11 Stopped
Does anyone have any recommendations in trying to tap into the MdmTx channel and record the output?
