广东加盟网站建设,为什么网站不需要icp备案,海外搜索推广外贸网站,南头手机公司网站建设最近#xff0c;因新增需求需要在现有产品上增加UAC的功能#xff0c;查阅并学习相关知识后#xff0c;在rk3588 SOC硬件平台搭载android13系统平台上成功配置了uac及uacadb的复合设备。基于开源共享精神希望给大家提供些参考。
1.技术可行性预研 #xff08;1#… 最近因新增需求需要在现有产品上增加UAC的功能查阅并学习相关知识后在rk3588 SOC硬件平台搭载android13系统平台上成功配置了uac及uacadb的复合设备。基于开源共享精神希望给大家提供些参考。
1.技术可行性预研 1我首先预览rockchip发布的文档包遍历了系统及usb相关的文档其中Rockchip_Developer_Guide_USB_Gadget_UAC_CN.pdf文档中已经明确了RK3588内核中已经对RK3588 Linux-5.10做了相关技术支持。 但是阅读android初始化配置文件并没有相关uac的系统配置内容内核中也无uac相关配置项。看到了usb配置文件及内核中对audio_source的支持试验生效audio_source后可以在/dev/snd/下生成对应的pcm设备但使用inypcminfo指令来查询设备属性时系统崩溃直接往对应的pcm设备推数据亦然。 2询问rockchip FAE关于rk3588关于uac技术支持现状被告知需要自行支持可行。 2.UAC及UAC,ADB符合设备系统配置 1内核增加uac配置
--- a/kernel-5.10/arch/arm64/configs/rockchip_defconfigb/kernel-5.10/arch/arm64/configs/rockchip_defconfig-837,6 837,9 CONFIG_USB_CONFIGFS_MASS_STORAGEyCONFIG_USB_CONFIGFS_F_FSyCONFIG_USB_CONFIGFS_F_ACCyCONFIG_USB_CONFIGFS_F_AUDIO_SRCy
CONFIG_USB_CONFIGFS_F_UAC1y
CONFIG_USB_CONFIGFS_F_UAC1_LEGACYy
CONFIG_USB_CONFIGFS_F_UAC2yCONFIG_USB_CONFIGFS_F_MIDIyCONFIG_USB_CONFIGFS_F_UVCyCONFIG_TYPEC_TCPMy 2配置文件增加uac及uac,adb符合设备配置 a).init.usb.configfs.rc文件增加内容
--- a/system/core/rootdir/init.usb.configfs.rcb/system/core/rootdir/init.usb.configfs.rc-106,6 106,22 on property:sys.usb.ffs.ready1 property:sys.usb.configaccessory,audio_sourcwrite /config/usb_gadget/g1/UDC ${sys.usb.controller}setprop sys.usb.state ${sys.usb.config}on property:sys.usb.configuac property:sys.usb.configfs1write /config/usb_gadget/g1/configs/b.1/strings/0x409/configuration uac2symlink /config/usb_gadget/g1/functions/uac2.gs0 /config/usb_gadget/g1/configs/b.1/f1write /config/usb_gadget/g1/UDC ${sys.usb.controller}setprop sys.usb.state ${sys.usb.config}on property:sys.usb.configuac,adb property:sys.usb.configfs1start adbdon property:sys.usb.ffs.ready1 property:sys.usb.configuac,adb property:sys.usb.configfs1write /config/usb_gadget/g1/configs/b.1/strings/0x409/configuration uac_adbsymlink /config/usb_gadget/g1/functions/uac2.gs0 /config/usb_gadget/g1/configs/b.1/f1symlink /config/usb_gadget/g1/functions/ffs.adb /config/usb_gadget/g1/configs/b.1/f2write /config/usb_gadget/g1/UDC ${sys.usb.controller}setprop sys.usb.state ${sys.usb.config}
on property:sys.usb.configmidi property:sys.usb.configfs1write /config/usb_gadget/g1/configs/b.1/strings/0x409/configuration midisymlink /config/usb_gadget/g1/functions/midi.gs5 /config/usb_gadget/g1/configs/b.1/f1 b).init.usb.rc文件增加内容
--- a/system/core/rootdir/init.usb.rcb/system/core/rootdir/init.usb.rc-103,6 103,24 on property:sys.usb.configaccessory,audio_source,adb property:sys.usb.configstart adbdsetprop sys.usb.state ${sys.usb.config}# UAC2 USB audio Class accessory configuration
on property:sys.usb.configuac property:sys.usb.configfs0write /sys/class/android_usb/android0/enable 0write /sys/class/android_usb/android0/idVendor 2207write /sys/class/android_usb/android0/idProduct 0019write /sys/class/android_usb/android0/functions ${sys.usb.config}write /sys/class/android_usb/android0/enable 1setprop sys.usb.state ${sys.usb.config}# UAC2 adb Class accessory configuration
on property:sys.usb.configuac,adb property:sys.usb.configfs0write /sys/class/android_usb/android0/enable 0write /sys/class/android_usb/android0/idVendor 2207write /sys/class/android_usb/android0/idProduct 001awrite /sys/class/android_usb/android0/functions ${sys.usb.config}write /sys/class/android_usb/android0/enable 1setprop sys.usb.state ${sys.usb.config}
# Used to set USB configuration at boot and to switch the configuration# when changing the default configurationon boot property:persist.sys.usb.config* c).init.rk30board.usb.rc文件增加内容
--- a/device/rockchip/common/rootdir/init.rk30board.usb.rcb/device/rockchip/common/rootdir/init.rk30board.usb.rc-82,6 82,17 on early-boot/config/usb_gadget/g1/functions/uvc.gs6/streaming/class/hs/hsymlink /config/usb_gadget/g1/functions/uvc.gs6/streaming/header/h \/config/usb_gadget/g1/functions/uvc.gs6/streaming/class/ss/h#uac function descriptionmkdir /config/usb_gadget/g1/functions/uac2.gs0write /config/usb_gadget/g1/functions/uac2.gs0/p_chmask 3write /config/usb_gadget/g1/functions/uac2.gs0/p_ssize 2write /config/usb_gadget/g1/functions/uac2.gs0/p_srate 48000write /config/usb_gadget/g1/functions/uac2.gs0/c_chmask 3write /config/usb_gadget/g1/functions/uac2.gs0/c_ssize 2write /config/usb_gadget/g1/functions/uac2.gs0/c_srate 48000write /config/usb_gadget/g1/functions/uac2.gs0/c_feature_unit 1mkdir /config/usb_gadget/g1/configs/b.1 0770 shell shellmkdir /config/usb_gadget/g1/configs/b.1/strings/0x409 0770 shell shellwrite /config/usb_gadget/g1/os_desc/b_vendor_code 0x1-118,6 129,7 on early-bootchown system system /config/usb_gadget/g1/functions/rndis.gs4chown system system /config/usb_gadget/g1/functions/midi.gs5chown system system /config/usb_gadget/g1/functions/uvc.gs6chown system system /config/usb_gadget/g1/functions/uac2.gs0chown system system /config/usb_gadget/g1/functions/ncm.gs7setprop sys.usb.mtp.device_type 3-175,6 187,12 on property:sys.usb.configuvc property:sys.usb.configfs1on property:sys.usb.configuvc,adb property:sys.usb.configfs1write /config/usb_gadget/g1/idProduct 0x0015on property:sys.usb.configuac property:sys.usb.configfs1write /config/usb_gadget/g1/idProduct 0x0019on property:sys.usb.configuac,adb property:sys.usb.configfs1write /config/usb_gadget/g1/idProduct 0x001aon property:sys.usb.configaccessory property:sys.usb.configfs1write /config/usb_gadget/g1/idVendor 0x18d1
sdk文件对应rk3588调试板文件路径system/core/rootdir/init.usb.rc/system/etc/init/hw/init.usb.rcsystem/core/rootdir/init.usb.configfs.rc/system/etc/init/hw/init.usb.configfs.rcdevice/rockchip/common/rootdir/init.rk30board.usb.rc/vendor/etc/init/hw/init.rk30board.usb.rc 3.编译后测试 1rk3588生效UAC设备 通过setprop指令生效uac或 uac,adb设备,需要先置none清空原配置再生效uac 只生效uac:
setprop sys.usb.config none;setprop sys.usb.config uac 生效uac,adb的复合设备
setprop sys.usb.config none;setprop sys.usb.config uac,adb 2查看声卡信息及配置内容 3PC上查看uac识别情况 4音频测试在PC上录音 在rk3588上推wav数据给PCM设备playback既可在PC上使用录音机app进行收音测试。
rk3588_t:/data/yueyc # tinyplay /data/yueyc/ihatetoloveyou48k.wav -D 7 -d 0
Playing sample: 2 ch, 48000 hz, 16 bit 47607428 bytes5音频测试在PC上放音 在pc上选择好音频输出设备为rk3588 声卡 在rk3588抓取数据如下
rk3588_t:/data/yueyc # tinycap ./capture.pcm -D 7 -d 0 -c 2 -r 48000 -b 16
Capturing sample: 2 ch, 48000 hz, 16 bit
^CCaptured 1724416 frames
rk3588_t:/data/yueyc #
附加说明
MP3格式转wav指令
#将不同采样率MP3转为所需采样率MP3
ffmpeg -i xxx.mp3 -ac 2 -ar 48000 -y xxx48k.mp3
#将mp3转为相同采样率的wav音频格式指令
ffmpeg -i xxx48k.mp3 xxx48k.wav
