Wave Generator: Implement option to generate waves without PSLab Device

[dwlsalmeida]

Signed-off-by: Daniel W. S. Almeida [email protected]

First steps for #1974

This is not ready yet. ~~Current code crashes with java.lang.IllegalStateException: Unable to retrieve AudioTrack pointer for write() . I will investigate.~~

I would appreciate some feedback on this, specially as I am not sure whether I have understood the task 100%. I have based my work on this blog post.

Changes:
Add a button to generate waves without a PSLab device, using the phone as the source for the signal. Refactor existing sampling code from its current implementation in ProduceSoundTask into a separate method for code reuse.

Checklist:

• [x] I have used resources from strings.xml, dimens.xml and colors.xml without hard-coding them
• [x] No modifications done at the end of resource files strings.xml, dimens.xml or colors.xml
• [ ] I have reformatted code in every file included in this PR [CTRL+ALT+L]
• [x] My code does not contain any extra lines or extra spaces
• [ ] I have requested reviews from other members

[mariobehling]

Hi @dwlsalmeida how is it going. Would be great to get this feature in. Would love to see the next steps.

[dwlsalmeida]

Hey @mariobehling

This is semi-working. Might as well give it another go today. Did you try it out? I'd appreciate some feedback.

Sent from my Redmi Note 5 using FastHub

[dwlsalmeida]

@mariobehling @CloudyPadmal can I get someone to look this over?

I have implemented a radio button that checks whether there's anything hooked up into the audio jack before playing the signal. What now?

Any guidance is appreciated, thanks! :)