Re: Starting playback in the middle of a movement

[Andreas Schneider]

On 12/11/19 11:09 AM, Richard Shann wrote:
> On Mon, 2019-12-09 at 20:28 +0100, Andreas Schneider wrote:
>> On 2019-12-08 21:36, Richard Shann wrote:
>>> On Sun, 2019-12-08 at 20:51 +0100, Andreas Schneider wrote:
>>>> When moving the playback start marker away from the beginning of
>>>> a
>>>> piece
>>>> (using the playback control), I encounter the new behaviour that
>>>> after
>>>> stating playback it takes quite a while until the actual playback
>>>> starts, or more precisely it seems that it plays back silently
>>>> from
>>>> the
>>>> beginning of the movement and starts producing sounds when it
>>>> arrives
>>>> at
>>>> the playback start marker. At least I guess that from the time it
>>>> takes
>>>> to start playing. I assume that this is a bug?
>>>
>>> I am not seeing that behaviour, and I don't think anything has
>>> changed
>>> for a long time in that area of the program. Are you seeing the
>>> messages announcing the starting and ending of playback on the
>>> console?
>>> I just did a few tests
>>>
>>> Denemo - MESSAGE : Starting playback
>>> Denemo - MESSAGE : Starting playback at 28.005368
>>> Here endeth a scripted playbackstarting audio playback at 56.010664
>>> Denemo - MESSAGE : Starting playback
>>> Denemo - MESSAGE : Starting playback at 56.010664
>>> Here endeth a scripted playbackDenemo - MESSAGE : Using channel 0
>>> prognum 0
>>> Denemo - MESSAGE : Using channel 1 prognum 0
>>> starting audio playback at 54.010402
>>> Denemo - MESSAGE : Starting playback
>>> Denemo - MESSAGE : Starting playback at 54.010402
>>> Here endeth a scripted playback
>>>
>>> I was setting the start place via the Playback Control green "|"
>>> button
>>> but I am getting the same immediate response with Ctrl-F5 and with
>>> Ctrl-Alt-Drag of the start playback marker followed by F5
>>
>> When starting playback, I get the messages
>>
>> Denemo - MESSAGE : Starting playback
>> Denemo - MESSAGE : Starting playback at 0.000000
>
> Do you get these two promptly when you start playback, or are they
> delayed until playback actually starts?

I get these two messages immediately when clicking playback start. The
sound starts considerably later.

>> independent of where the playback start marker is. Playback ends with
>> the message
>>
>> Here endeth a scripted playback
>
> Are you using JACK or Alsa?

I am using JACK.

>> Do you have a suggestion how to debug?
>
> Are you able easily to run an old version of Denemo to check that it is
> something external and not some difference within your Denemo binary?

Yes, I can just install some old Debian packages or build an old
version. Is there a specific version you have in mind?

Andreas