RFR: 8301846: Invalid TargetDataLine after screen lock when using JFileChooser or COM library [v6]

Renjith Kannath Pariyangad duke at openjdk.org
Fri Oct 13 10:03:25 UTC 2023


On Thu, 12 Oct 2023 09:53:55 GMT, Alexey Ivanov <aivanov at openjdk.org> wrote:

>> Did further investigation on JDK-7116070 (name truncation issue) and found its [MS structure](https://learn.microsoft.com/en-us/windows-hardware/drivers/audio/extended-capabilities-from-a-wdm-audio-driver) limitation, this structure can accommodate max 31 char only for _szPname_ . 
>> 
>> Workflow :
>> **PLATFORM_API_WinOS_Ports.c** loading the description with the help of _mixerGetDevCapsW_ function and result will be stored into the [MIXERCAPSW](https://learn.microsoft.com/en-us/windows/win32/api/mmeapi/ns-mmeapi-mixercapsw) structure and in this max size for _szPname_ is 31 char. 
>> In my analysis this is a limitation and we can't do anything more,  let me know if you are aware any alternative solution for this.
>
>> Did further investigation on JDK-7116070 (name truncation issue) and found its [MS structure](https://learn.microsoft.com/en-us/windows-hardware/drivers/audio/extended-capabilities-from-a-wdm-audio-driver) limitation, this structure can accommodate max 31 char only for _szPname_ .
>> 
>> Workflow : **PLATFORM_API_WinOS_Ports.c** loading the description with the help of _mixerGetDevCapsW_ function and result will be stored into the [MIXERCAPSW](https://learn.microsoft.com/en-us/windows/win32/api/mmeapi/ns-mmeapi-mixercapsw) structure and in this max size for _szPname_ is 31 char. In my analysis this is a limitation and we can't do anything more, let me know if you are aware any alternative solution for this.
> 
> @Renjithkannath Please, add this evaluation to [JDK-7116070](https://bugs.openjdk.org/browse/JDK-7116070). The bug itself can be closed as *External*: we can do nothing about it, it's a limitation of Windows API.
> 
> If Java migrates to a newer audio API, JDK-7116070 will be resolved.

Thanks @aivanov-jdk, I have closed  JDK-7116070 marked as _External_ by adding evaluation into comment.

-------------

PR Comment: https://git.openjdk.org/jdk/pull/14898#issuecomment-1761250669


More information about the client-libs-dev mailing list