Bluealsa (mixed stream) send output to headphones

Bluealsa (mixed stream) send output to headphones - Printable Version

+- Moode Forum (https://moodeaudio.org/forum)
+-- Forum: moOde audio player (https://moodeaudio.org/forum/forumdisplay.php?fid=3)
+--- Forum: Support (https://moodeaudio.org/forum/forumdisplay.php?fid=7)
+--- Thread: Bluealsa (mixed stream) send output to headphones (/showthread.php?tid=2366)

Bluealsa (mixed stream) send output to headphones - audiocore - 04-14-2020

i there,

I'll try to explain what I want to achieve Smile

My setup consists of a Rapsberry Pi 3b with a Hifiberry DAC+ DSP.
The DAC+ DSP mixes a digital input (TV) with the internal sound stream of the Raspberry. This stream can be controlled by alsamixer or dsptoolkit from hifiberry.

aplay -l gives:

Code:
**** List of PLAYBACK Hardware Devices ****

card 0: sndrpihifiberry [snd_rpi_hifiberrydacplusdsp_sou], device 0: Hifiberry DAC+DSP SoundCard HiFi dacplusdsp-codec-0 [Hifiberry DAC+DSP SoundCard HiFi dacplusdsp-codec-0]

  Subdevices: 1/1

  Subdevice #0: subdevice #0

and amixer -D gives:

Code:
Simple mixer control 'DSPVolume',0

  Capabilities: volume

  Playback channels: Front Left - Front Right

  Capture channels: Front Left - Front Right

  Limits: 0 - 255

  Front Left: 198 [78%]

  Front Right: 198 [78%]

Until now, only the "moode audio sound" is transmitted by bluetooth to my headphones. What I'd like to do is, to transmit the mixed sound (TV sound ) to my bluetooth headphones.

Bluealsa (v2.1.0-40-g313b00c) is working and sudo bluealsa-aplay -L gives me:

Code:
bluealsa:SRV=org.bluealsa,DEV=xx:xx:xx:xx:xx,PROFILE=a2dp

    WH-1000XM2, trusted audio-card, playback

    A2DP (SBC): S16_LE 2 channels 48000 Hz

I can configure my device with amixer and also play sounds

sudo amixer -D bluealsa sset 'WH-1000XM2 - A2DP' 100% or play sound...
aplay -D bluealsa:SRV=org.bluealsa,DEV=xx:xx:xx:xx:xx:xx,PROFILE=a2dp sample.wav

How can I now send the complete stream or what comes out from DSPvolume via bluetooth?