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Milestone FOA ported to use AmbiX instead of FuMa

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Trond Lossius edited this page Dec 9, 2019 · 25 revisions

Naming conventions

As plugins are updated, their names need to change so that old and new versions are not mixed up in Reaper projects. The approach to this will be similar to how Blue Ripple did the same transition:

  • Old version has names starting with ATK FOA (something)
  • New version has names starting with ATK O1A (something)

GUI Improvements

Redraw efficiency

In the FuMa version of the plugins, the GUI gets redrawn all the time. This ought to be changed so that they only redraw when needed, saving quite a bit of CPU. Doing so should be part of this milestone.

Here's Justin's example code illustrating how this can be done:

desc: Test Line Draw Aliasing

@init
gfx_clear=-1; // prevent auto clear of each frame (since we only draw when the frame changes)

@gfx 500 500

// Determine geometry
gCenterX = gfx_w * 0.5;
gCenterY = gfx_h * 0.5;

// Update sliders when mouse is pressed
(mouse_cap == 1) ? (

 slider1 =  (mouse_x - gCenterX) / gCenterX;
 slider2 = -(mouse_y - gCenterY) / gCenterY;

 slider_automate(slider1);
 slider_automate(slider2);
);

// Draw circle

(gfx_w != last_gfx_w || gfx_h != last_gfx_h || slider1 != last_slider1 || slider2 != last_slider2) ? (

  gfx_a = 1.;
  // manually clear framebuffer.  we could also choose a minimal area to update (last circle position if the width/height didn't change, for example)

  gfx_r=gfx_b=gfx_b=0;
  gfx_rect(0,0,gfx_w,gfx_h);

  last_gfx_w = gfx_w;
  last_gfx_h = gfx_h;
  last_slider1=slider1;
  last_slider2=slider2;


  gfx_r = 0.8;
  gfx_g = 0.2;
  gfx_b = 0.2;

  gfx_circle((slider1 + 1)*gCenterX, (-slider2+1)*gCenterY, 10, 1, 1);

);

Improve GUI for encoders

These plugins will be more user-friendly if it is clear fromt he GUI how channel assignments are set up.

Add loudspeaker polarity indicator to decoder GUIs

@lossius in relation to the GUI enhancement #9, (RMS) levels are now displayed for loudspeaker feeds.

Add an indicator to illustrate the average polarity of channel output feeds. This is "easily" calculated. E.g.:

polarityLF = TimeAverage(LF * W)

By monitoring the polarity of polarityLF we can determine whether the average signal presented at LF is "in phase" or "out of phase" with W. This is a very useful indicator illustrating decoder performance and sound-field quality.

More details... there are actually three states of interest:

polarity > 0 means "in phase" polarity = 0 means "in quadrature" polarity < 0 means "out of phase"

I'm thinking these states could be represented by a colour or shading change of the current metering.

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