Enable negative effect mode

[funkyidol]

I want to apply the Negative effect mode similar to whats available in Camera2 API. How can I acheive the same effect using Fotoapparat?

previewRequestBuilder.set(CaptureRequest.CONTROL_EFFECT_MODE,
                        CaptureRequest.CONTROL_EFFECT_MODE_NEGATIVE)

• FA version: 2.7.0

[funkyidol]

I see that you have a test in your code which actually tries to fetch the effects and verify if they are available. But I dont see them being extracted in the main library or an option to set the said parameter type. Can something similar be used to apply the negative filter directly as a Camera.Parameter so that both the preview and capture frames will have effect enabled without additional processing?

If yes, I would like to implement this (if its not already there) on a fork and send you a PR for the same. Though some additional guidance regarding the same will not hurt.

[coudys]

I found one app on google play store that can do the negative effect on my phne but I dont have source code. For now I just chnage the RGB values using getpixels() and for loop, C# code

if (negativeTrue) { // Apply the negative effect to the camera feed texture Color[] colors = backCameraTexture.GetPixels(); for (int i = 0; i < colors.Length; i++) { colors[i].r = 1.0f - colors[i].r; colors[i].g = 1.0f - colors[i].g; colors[i].b = 1.0f - colors[i].b; } negativeTexture.SetPixels(colors); negativeTexture.Apply(); targetImage.texture = negativeTexture; } else { targetImage.texture = backCameraTexture; }