Re: AudioHardwarePlugIn and kAudioDevicePropertyDataSourceNameForID
Re: AudioHardwarePlugIn and kAudioDevicePropertyDataSourceNameForID
- Subject: Re: AudioHardwarePlugIn and kAudioDevicePropertyDataSourceNameForID
- From: Dirk Musfeldt <email@hidden>
- Date: Thu, 04 Nov 2004 11:39:42 +0100
Is it possible that QuickTime or the SoundManager layer is doing this wrong?
If I use HackTV with my plug-in and open the Sounbd settings I get this:
DeviceGetProperty: kAudioDevicePropertyDataSourceNameForID:
ioPropertyDataSize 16
mInputData 0x0
mInputDataSize 0
mOutputData 0x0
mOutputDataSize 0
But I could see other input names so there must be a way to signal this.
What am I doing wrong?
> If the mOutputData field is NULL or the mOutputDataSize field is 0, it
> is an error by the caller of AudioDeviceGetProperty() and you should
> return kAudioHardwareIllegalOperationError.
>
> If mOutputData is not NULL but mOutputDataSize is smaller than the
> string you want to return, you should truncate the string to fit in the
> provided buffer.
>
> On Nov 3, 2004, at 5:18 AM, Dirk Musfeldt wrote:
>
>
>
>> Hi all,
>>
>> I'm doing an AudioHardwarePlugIn and have troubles to get my reaction
>> on
>> kAudioDevicePropertyDataSourceNameForID right.
>>
>> I get an AudioValueTranslation record and want to copy my C string
>> into the
>> buffer provided with the mOutputData field.
>>
>> strcpy((char*)translation->mOutputData,nameString);
>>
>> But what if mOutputData and mOutputData Size are null? Do I have to
>> malloc a
>> buffer myself?
>>
>>
>>
>> Regards
>>
>> Dirk
>>
>>
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>
>
>
Regards
Dirk
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