API: take audio accessor returns 0.0 for mono item + Chan mode: mono (left) (FIXED)

nofish · 03-09-2019, 10:17 AM

edit:
Fixed (v5.986rc1)

===

In the licecap I have two mono items with a DC offset (for testing purpose).
First one is set to Channel mode: normal, second one is set to Channel mode: Mono (left).

I then read out the sample values with a script.

As can be seen, for the second item the sample values are 0.0.
I assume it should rather give the actual sample values in this case, because when playing a mono item with Channel mode set to Mono (left) there is sound and not silence, or?

licecap

nofish · 10-24-2019, 07:57 AM

bump

This results in wrong Loudness values in SWS when analyzing a mono item which user has set to channel mode: Mono (Left) (which admittedly doesn't seem to make much sense but did happen).

cfillion · 11-17-2019, 04:14 AM

The issue is GetAudioAccessorSamples doesn't write any samples to the output buffer when processing mono takes with the channel mode set to either Mono Left or Mono Right. Yet it still returns 1 as usual.

As observed with the test script for this other take audio accessor bug: https://forum.cockos.com/showthread.php?t=226151.

It would be useful to have GetAudioAccessorSamples return how many samples it actually wrote to the buffer.

Justin · 11-17-2019, 09:03 AM

Fixing, thanks! As a workaround for old versions you can always read stereo data for mono items and just look at the first channel...

03-09-2019, 10:17 AM	#1
nofish Human being with feelings Join Date: Oct 2007 Location: home is where the heart is Posts: 12,305	API: take audio accessor returns 0.0 for mono item + Chan mode: mono (left) (FIXED) edit: Fixed (v5.986rc1) === In the licecap I have two mono items with a DC offset (for testing purpose). First one is set to Channel mode: normal, second one is set to Channel mode: Mono (left). I then read out the sample values with a script. As can be seen, for the second item the sample values are 0.0. I assume it should rather give the actual sample values in this case, because when playing a mono item with Channel mode set to Mono (left) there is sound and not silence, or? licecap __________________ me on Soundcloud (Beats Rap Reggae) Wikiloops - free online jams, check it out my ReaScripts SWS issue tracker Donations Last edited by nofish; 11-18-2019 at 01:46 PM.

10-24-2019, 07:57 AM	#2
nofish Human being with feelings Join Date: Oct 2007 Location: home is where the heart is Posts: 12,305	bump This results in wrong Loudness values in SWS when analyzing a mono item which user has set to channel mode: Mono (Left) (which admittedly doesn't seem to make much sense but did happen). __________________ me on Soundcloud (Beats Rap Reggae) Wikiloops - free online jams, check it out my ReaScripts SWS issue tracker Donations

11-17-2019, 04:14 AM	#3
cfillion Human being with feelings Join Date: May 2015 Location: Québec, Canada Posts: 5,265	The issue is GetAudioAccessorSamples doesn't write any samples to the output buffer when processing mono takes with the channel mode set to either Mono Left or Mono Right. Yet it still returns 1 as usual. As observed with the test script for this other take audio accessor bug: https://forum.cockos.com/showthread.php?t=226151. It would be useful to have GetAudioAccessorSamples return how many samples it actually wrote to the buffer. __________________ 🎁 Donate (PayPal) \| Sponsor (GitHub) \| The Endless Journey (Keyboard Ensemble) ReaPack, a package manager for REAPER \| SWS 2.14 is now available in ReaPack [new!] Developer tools: Lua profiler \| Interactive ReaScript \| ReaPack Editor \| ReaImGui Last edited by cfillion; 11-17-2019 at 08:14 AM.

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11-17-2019, 09:03 AM	#4
Justin Administrator Join Date: Jan 2005 Location: NYC Posts: 16,117	Fixing, thanks! As a workaround for old versions you can always read stereo data for mono items and just look at the first channel...