RK3399Pro 音频配置

RK3399Pro 音频配置

来源 https://t.rock-chips.com/forum.php?mod=viewthread&tid=2589&extra=page%3D1

1、RK3399Pro上有三张声卡，耳机喇叭播放所用的声卡是 card 0

[root@rk3399pro:~]# cat /proc/asound/cards 
 0 [rockchiprk809co]: rockchip_rk809- - rockchip,rk809-codec
                      rockchip,rk809-codec
 1 [rockchiphdmi   ]: rockchip_hdmi - rockchip,hdmi
                      rockchip,hdmi
 2 [Device         ]: USB-Audio - USB Audio Device
                      C-Media Electronics Inc. USB Audio Device at usb-fe380000.usb-1.3, full speed
[root@rk3399pro:~]#

[root@rk3399pro:~]# amixer cget numid=1,iface=MIXER,name='Playback Path'
numid=1,iface=MIXER,name='Playback Path'
  ; type=ENUMERATED,access=rw------,values=1,items=11
  ; Item #0 'OFF'
  ; Item #1 'RCV'
  ; Item #2 'SPK'
  ; Item #3 'HP'
  ; Item #4 'HP_NO_MIC'
  ; Item #5 'BT'
  ; Item #6 'SPK_HP'
  ; Item #7 'RING_SPK'
  ; Item #8 'RING_HP'
  ; Item #9 'RING_HP_NO_MIC'
  ; Item #10 'RING_SPK_HP'
  : values=0
[root@rk3399pro:~]# 

不同Playback Path模式的音量大小不同，
Item #0 'OFF' --- 无音量
Item #2 'SPK' --- 低音量
Item #4 'HP_NO_MIC' --- 中音量
Item #7 'RING_SPK' --- 高音量
amixer cset numid=1,iface=MIXER,name='Playback Path' 0 && aplay -D hw:0,0 sn.wav
amixer cset numid=1,iface=MIXER,name='Playback Path' 2 && aplay -D hw:0,0 sn.wav
amixer cset numid=1,iface=MIXER,name='Playback Path' 4 && aplay -D hw:0,0 sn.wav
amixer cset numid=1,iface=MIXER,name='Playback Path' 7 && aplay -D hw:0,0 sn.wav

#!/bin/sh
#filename: testAlarm.sh

PLAYBACK_ID=0
AUDIO_ID=0
MESSAGE_TEXT=""

if [ $# -eq 0 ]
then
	echo "Usage: ${0} AUDIO_ID "
	echo "Usage: ${0} AUDIO_ID MESSAGE_TEXT "
	echo "Usage: ${0} PLAYBACK_ID AUDIO_ID MESSAGE_TEXT "
	echo "e.g.: ${0} 0 7 \"Mute volume ...\" "
	echo "e.g.: ${0} 2 7 \"Low volume ...\" "
	echo "e.g.: ${0} 4 7 \"Medium volume ...\" "
	echo "e.g.: ${0} 7 7 \"High volume ...\" "
	exit
elif [ $# -eq 1 ]
then
	PLAYBACK_ID=4
	AUDIO_ID=$1
	MESSAGE_TEXT="test ..."
elif [ $# -eq 2 ]
then
	PLAYBACK_ID=4
	AUDIO_ID=$1
	MESSAGE_TEXT=$2
elif [ $# -eq 3 ]
then
	PLAYBACK_ID=$1
	AUDIO_ID=$2
	MESSAGE_TEXT=$3
else
	echo "Usage: ${0} AUDIO_ID "
	echo "Usage: ${0} AUDIO_ID MESSAGE_TEXT "
	echo "Usage: ${0} PLAYBACK_ID AUDIO_ID MESSAGE_TEXT "
	exit
fi


echo "test audio light message ..."

amixer cset numid=1,iface=MIXER,name='Playback Path' ${PLAYBACK_ID}  >/dev/null 2>&1

dbus-send --system --type=signal /com/ditel/acu_agent/alarm com.ditel.acu_agent.alarm_signal string:"{\"msg_level\": 3, \"msg_type\": 2, \"msg_content\": \"${MESSAGE_TEXT}\", \"msg_valid_time\": 15, \"msg_vol_id\": ${AUDIO_ID}, \"repeat_times\": 2 }"

echo "test done ..."

#### End ####

 

2、如果要通过耳机播放有两种方式

①、aplay -D HeadphoneNormal sn.wav (HeadphoneNormal  在/usr/share/alsa/alsa.conf有配置)

②、amixer cset numid=1,iface=MIXER,name='Playback Path' 3  && aplay -D hw:0,0 sn.wav

注意：如果是喇叭HeadphoneNormal改成SpeakerNormal，amixer cset numid=1,iface=MIXER,name='Playback Path' 2，其他类推。

 

3、如果要通过板载mic录音

①、arecord -D MainMicCapture -r 44100  -f S16_LE -c 2 -d 10  /etc/main.wav

②、amixer cset numid=2,iface=MIXER,name='Capture MIC Path'  1 && arecord -Dhw:0,0 -r44100  -f S16_LE -c 2 -d 10  /etc/main.wav

注意：如果是耳机mic 录音 MainMicCapture改成FreeMicCapture，amixer cset numid=2,iface=MIXER,name='Capture MIC Path'  2 。

4、通过cat /proc/asound/cards 知道默认声卡是card 0，如果不是，通过arecord、aplay、amixer配置时，需要修改对应的声卡号。

5、如果想通过hdmi out播放aplay -Dhw:1,0 sn.wav

 

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