Hello,
We porting Android4.3 JB on custom board,
and desired output two channel at the same time (sgtl5000 & spdif)
on config_sgtl5000.h
static struct audio_card sgtl5000_card ={
.name = "sgtl5000-audio",
.driver_name = "sgtl5000-audio",
.supported_out_devices=
AUDIO_DEVICE_OUT_SPEAKER|
AUDIO_DEVICE_OUT_WIRED_HEADPHONE|
AUDIO_DEVICE_OUT_DEFAULT|
on config_spdif.h
static struct audio_card spdif_card ={
.name = "imx-spdif",
.driver_name = "imx-spdif",
.supported_out_devices=
AUDIO_DEVICE_OUT_AUX_DIGITAL,
when boot device
sgtl5000 1-000a: sgtl5000 revision 17
asoc: sgtl5000 <-> imx-ssi.1 mapping ok
asoc: mxc-spdif <-> imx-spdif-dai.0 mapping ok
ALSA device list:
#0: sgtl5000-audio
#1: imx-spdif
and we can use tinyplay test output
tinyplay a.wav -D 0 -> sgtl5000 output audio
tinyplay a.wav -D 1 -> spdif output audio
and it's fine !
when we define audio_policy.conf
global_configuration {
attached_output_devices AUDIO_DEVICE_OUT_SPEAKER
default_output_device AUDIO_DEVICE_OUT_SPEAKER
attached_input_devices AUDIO_DEVICE_IN_BUILTIN_MIC
}
Default channel is sgtl5000
and
global_configuration {
attached_output_devices AUDIO_DEVICE_OUT_AUX_DIGITAL
default_output_device AUDIO_DEVICE_OUT_AUX_DIGITAL
attached_input_devices AUDIO_DEVICE_IN_BUILTIN_MIC
}
Default channel is spdif
how to output two channel audio at the same time?
Thanks.
Hello Tsai,
We have try to get two audio outputs on Android 4.3 without success we believe it is a limitation of the Android framework. since if you try separately every output it is working fine.