Hi Paul, I tried pasting your OEMSettingsOverride.AddReg section into one of our card drivers, did a clean reinstall on Windows 7 32-bit and it came up with 48kHz 16-bit stereo as the default speakers setting. I don’t know why it isn’t working for you, although perhaps as you suggest it might be your use of devcon.exe. Jeff From: wdmaudiodev-bounce@xxxxxxxxxxxxx [mailto:wdmaudiodev-bounce@xxxxxxxxxxxxx] On Behalf Of Paul Titchener Sent: Thursday, 5 July 2012 4:30 AM To: wdmaudiodev@xxxxxxxxxxxxx Subject: [wdmaudiodev] Re: How to set a driver's default sampling frequency and num channels Hi Jeff- Thanks for the suggestions but this is still kicking my rear, I tried following your tips but its still not changing the default sampling frequency. But I’m just learning how .inf files work and probably know just enough to be dangerous and likely there is still something wrong in my .inf file. I copied it below, if you could be nice enough to take a look at it to see what is still bungled I would really appreciated it. I compiled this by looking at several different examples so its very likely I messed something up. Also I wouldn’t think this would matter, but for this development work I’m using devcon.exe to do the installs but I wouldn’t think that would make any difference, am I wrong about that? Thanks, Paul [Version] Signature="$CHICAGO$" Class=MEDIA Provider=%FXMN% ClassGUID={4d36e96c-e325-11ce-bfc1-08002be10318} DriverVer = 07/02/2012, 1.0.0.0 CatalogFile=new1.cat CatalogFile.NTx86=new1NTx86.cat CatalogFile.NTAMD64=new1NTAMD64.cat CatalogFile.NTIA64 = new1NTIA64.cat [Manufacturer] %MfgName%=NEW,NTamd64 [NEW] %NEW_Device.DeviceDesc%=NEW_Device,,*NEW1Device [NEW.NTamd64] %NEW_Device.DeviceDesc%=NEW_Device,,*NEW1Device ;----------------------------------------------------------------------------- ; ; 2k+ Installation ; ;----------------------------------------------------------------------------- [NEW_Device.NT] Include=ks.inf,wdmaudio.inf Needs=KS.Registration, WDMAUDIO.Registration CopyFiles=NEW_Device.CopyList AddReg=NEW_Device.AddReg AddProperty=NEW_1AddPropertySection [NEW_Device.NT.Interfaces] AddInterface=%KSCATEGORY_AUDIO%,%KSNAME_Wave%,NEW_Device.I.Wave AddInterface=%KSCATEGORY_RENDER%,%KSNAME_Wave%,NEW_Device.I.Wave AddInterface=%KSCATEGORY_CAPTURE%,%KSNAME_Wave%,NEW_Device.I.Wave AddInterface=%KSCATEGORY_AUDIO%,%KSNAME_Topology%,NEW_Device.I.Topo [NEW_Device.NT.Services] AddService=NEW1Device,0x00000002,NEW_Device_Service_Inst [NEW_Device_Service_Inst] DisplayName=%NEW_Device.SvcDesc% ServiceType=1 StartType=3 ErrorControl=1 ServiceBinary=%10%\system32\drivers\new.sys ;----------------------------------------------------------------------------- ; ; 98SE+ Installation ; ;----------------------------------------------------------------------------- [NEW_Device] AlsoInstall=ks.registration(ks.inf),wdmaudio.registration(wdmaudio.inf) CopyFiles=NEW_Device.CopyList AddReg=NEW_Device.AddReg [NEW_Device.Interfaces] AddInterface=%KSCATEGORY_AUDIO%,%KSNAME_Wave%,NEW_Device.I.Wave AddInterface=%KSCATEGORY_RENDER%,%KSNAME_Wave%,NEW_Device.I.Wave AddInterface=%KSCATEGORY_CAPTURE%,%KSNAME_Wave%,NEW_Device.I.Wave AddInterface=%KSCATEGORY_AUDIO%,%KSNAME_Topology%,NEW_Device.I.Topo ;----------------------------------------------------------------------------- ; ; Common registry data ; ;----------------------------------------------------------------------------- [NEW_Device.AddReg] HKR,,AssociatedFilters,,"wdmaud,swmidi,redbook" HKR,,Driver,,new.sys HKR,Drivers,SubClasses,,"wave,midi,mixer" HKR,Drivers\wave\wdmaud.drv,Driver,,wdmaud.drv HKR,Drivers\midi\wdmaud.drv,Driver,,wdmaud.drv HKR,Drivers\mixer\wdmaud.drv,Driver,,wdmaud.drv HKR,Drivers\wave\wdmaud.drv,Description,,%NEW_Device.DeviceDesc% HKR,Drivers\midi\wdmaud.drv,Description,,%NEW_Device_MIDI% HKR,Drivers\mixer\wdmaud.drv,Description,,%NEW_Device.DeviceDesc% HKLM,%MediaCategories%\%GUID.DSPEAKERS%,Name,,%Name.DSPEAKERS% [NEW_Device.I.Wave] AddReg=NEW_Device.I.Wave.AddReg [NEW_Device.I.Wave.AddReg] HKR,,CLSID,,%Proxy.CLSID% HKR,,FriendlyName,,%NEW_Device.Wave.szPname% [NEW_Device.I.Topo] AddReg=NEW_Device.I.Topo.AddReg, OEMSettingsOverride.AddReg [NEW_Device.I.Topo.AddReg] HKR,,CLSID,,%Proxy.CLSID% HKR,,FriendlyName,,%NEW_Device.Topo.szPname% [NEW_1AddPropertySection] DeviceIcon,,,,%NEW_1_Icon_File% DeviceBrandingIcon,,,,%NEW_1_Icon_File% ;; ;; All EP\\0 entries in the same grouping ;; ;; Set default format to 48kHz, 16-bit, Stereo ;; [OEMSettingsOverride.AddReg] HKR,"EP\\0", %PKEY_AudioEndpoint_Association%,,%KSNODETYPE_SPEAKER% ; Should set 48khz, 2 channel, 16 bits HKR,"EP\\0", %PKEY_AudioEngine_OEMFormat%, 0x00000001, 41,00,00,00,28,00,00,00,FE,FF,02,00,80,BB,00,00,00,EE,02,00,04,00,10,00,16,00,10,00,03,00,00,00,01,00,00,00,00,00,10,00,80,00,00,AA,00,38,9B,71 ;----------------------------------------------------------------------------- ; ; Files ; ;----------------------------------------------------------------------------- [SourceDisksNames] 222="NEW Driver Disc","",222 [SourceDisksFiles.x86] new.sys=222 [SourceDisksFiles.amd64] new.sys=222 [DestinationDirs] NEW_Device.CopyList=10,system32\drivers [NEW_Device.CopyList] new.sys ;====================================================== ; Strings ;====================================================== [Strings] FXMN="www.new.com" MfgName="www.new.com" NEW_Device.DeviceDesc="NEW Driver" NEW_1_Icon_File="c:\windows\system32\drivers\new1.ico" NEW_Device.Wave.szPname="NEW Wave" NEW_Device.Topo.szPname="NEW Topology" NEW_Device_MIDI="NEW -> Midi Device" Proxy.CLSID="{17CCA71B-ECD7-11D0-B908-00A0C9223196}" KSCATEGORY_AUDIO="{6994AD04-93EF-11D0-A3CC-00A0C9223196}" KSCATEGORY_RENDER="{65E8773E-8F56-11D0-A3B9-00A0C9223196}" KSCATEGORY_CAPTURE="{65E8773D-8F56-11D0-A3B9-00A0C9223196}" KSNAME_Wave="NEW Wave" KSNAME_Topology="NEW Topology" NEW_Device.SvcDesc="NEW Audio Driver" GUID.DSPEAKERS="{94c5c56a-06cf-43be-8dd5-33f7e2b20e5d}" Name.DSPEAKERS="NEW Speakers" MediaCategories="SYSTEM\CurrentControlSet\Control\MediaCategories" MediaCategories="SYSTEM\CurrentControlSet\Control\MediaCategories" REG_BINARY="0x00000001" KSNODETYPE_SPEAKER = "{DFF21CE1-F70F-11D0-B917-00A0C9223196}" PKEY_AudioEndpoint_ControlPanelProvider = "{1DA5D803-D492-4EDD-8C23-E0C0FFEE7F0E},1" PKEY_AudioEndpoint_Association = "{1DA5D803-D492-4EDD-8C23-E0C0FFEE7F0E},2" PKEY_AudioEngine_OEMFormat = "{E4870E26-3CC5-4CD2-BA46-CA0A9A70ED04},3" AUDIOENDPOINT_EXT_UI_CLSID = "{6C57B2A2-91F5-4b90-93D5-FAB82485ECA6}" ;AUDIOENDPOINT_EXT_UI_CLSID = "{31A53A7B-E0D8-4f99-B950-F6C8F25E6731}"