[LAD] ALSA Sequencer timestamp on event without scheduling

Felipe Ferreri Tonello eu at felipetonello.com
Fri Sep 30 08:35:11 UTC 2016

Hi Clemens,

On 20/09/16 18:11, Clemens Ladisch wrote:
> Felipe Ferreri Tonello wrote:
>> On 20/09/16 15:26, Clemens Ladisch wrote:
>>> In other words: any application that does care about timestamps will
>>> never see your timestamps.
>> Yes. And that's why my first question.
>> How can we implement this timestamp feature in ALSA with the current
>> implementation?
> Not at all.
>> If it is not possible, how feasible is for us to add this feature?
> The ALSA sequencer API is an interface between multiple drivers and
> applications.  Adding a feature to the interface will not have any
> measurable effect because no other application will use it.

No other application will use it because it has not been implemented
yet. It doesn't mean that applications who cares about MIDI over BLE
will not use it. It is a very small patch anyway.

> The time of an event is the time at which it is actually delivered.
> If you want to be compatible with most other applications, you have
> to deliver the events at the desired time.

Ok. This is *not* an option. We need to overcome this somehow.

-------------- next part --------------
A non-text attachment was scrubbed...
Name: 0x92698E6A.asc
Type: application/pgp-keys
Size: 7177 bytes
Desc: not available
URL: <http://lists.linuxaudio.org/pipermail/linux-audio-dev/attachments/20160930/0dee7226/attachment.key>

More information about the Linux-audio-dev mailing list