Select audio output on Android 5.1

kiwor · Posted at 3/9/2018 23:33:21

On the fireprime with android 5.1, when I play music or video file, the audio stream goes through both hdmi and headphone jack.

Is there a way to programmatically mute one of them ?

leung先森 · Posted at 3/15/2018 19:33:11

hardware/rockchip/audio/tinyalsa_hal/audio_hw.c
start_output_stream()
control the sound card open or not in this interface

kiwor · Posted at 5/14/2018 17:57:27

Hi,

Thanks for your reply ! I had a look on this file but I don't really know what to do with it as I want to control my audio output from my android app.
I tried this method => https://stackoverflow.com/questi ... force-audio-routing with all the "DEVICE_OUT_" variables I have found but it does nothing.

Can you tell me more on this audio_hw.c file and what to do with it in order to control audio output from my app ?

kiwor · Posted at 5/14/2018 23:04:01

It's ok for me now : I just had to comment "out->device = 0x400;" line 412 and "out->device = 0x8;" line 434.
Then using the methode found on stackoverflow (link above) with DEVICE_OUT_AUX_DIGITAL controlling HDMI audio and DEVICE_OUT_WIRED_HEADPHONE the headphone jack output, it works !

Thanks for your help, leung先森