COCKOS
CONFEDERATED FORUMS
Cockos : REAPER : NINJAM : Forums
Forum Home : Register : FAQ : Members List : Search :

Go Back   Cockos Incorporated Forums > Cockos and Friends Software Discussion > WDL users forum

Reply
 
Thread Tools Display Modes
Old 01-28-2017, 11:06 PM   #1
bmelonhead
Human being with feelings
 
Join Date: Dec 2015
Posts: 15
Default being notified of playback start in iPlug (WDL-OL)

I started developing my plugins using AU and VST to test and came to assume that I would get a Reset() call when playback is started. I found out today that VST3 does not do this. But it does call OnActivate, so I defined that in my plugin and had it call Reset() (it gets called twice on playback start, but I can work with that). Now I'm double checking AAX and finding that it does not call Reset or OnActivate when playback starts. I turned on TRACE and as far as I can tell, there is no call when playback starts.

Isn't it common to want to know when playback starts? Am I alone in wanting to do something special with my plugin state/processing when playback starts? Take latency for example...which should be a widespread need. If you have latency of X samples, then when playback starts you get calls to ProcessDoubleReplacing to supply the initial X samples without the normal sampling delay between the calls. Wouldn't most people want to handle these calls slightly different from a normal ProcessDoubleReplacing call? Without any indication of playback start, there is no way to distinguish them.
bmelonhead is offline   Reply With Quote
Old 01-29-2017, 03:35 AM   #2
JD Young
Human being with feelings
 
JD Young's Avatar
 
Join Date: Nov 2014
Location: Leiden, the Netherlands
Posts: 7
Default

I used something like this the other day at the start of ProcessDoubleReplacing(), which seems to work for all different plug-in formats:

Code:
ITimeInfo ti;
GetTime(&ti);

bool isPlaying = ti.mTransportIsRunning;

if (!m_WasPlaying && isPlaying)
{
    // started playing
}
m_WasPlaying = isPlaying;
JD Young is offline   Reply With Quote
Old 01-29-2017, 11:23 AM   #3
bmelonhead
Human being with feelings
 
Join Date: Dec 2015
Posts: 15
Default

I implemented this and it does work. Thanks!
bmelonhead is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -7. The time now is 11:17 PM.


Powered by vBulletin® Version 3.8.9
Copyright ©2000 - 2017, vBulletin Solutions, Inc.