This commit adds support to using Xiph and Mozilla RNNoise library for
noise reduction.
RNNoise is a small library using an AI approach to noise reduction
using a pre-trained model like RTX Voice. But unlike RTX Voice, it is
very tiny, use CPU instead of GPU and only use little resources.
Obviously it is not as efficient but will effectively remove background
noise. It uses more CPU than the existing libspeex-based noise
reduction but it also sounds sounds way better.
RNNoise support is added to the noise reduction effect. It can be
enabled with a checkbox in the effect configuration. RNNoise has no
settings.
Not sure what effect black_and_white.png is going for. Add grayscale.png
to try to make it clear that the other image shouldn't be used for
desaturation.
By giving the option to disable the looping in the scroll filter, it
makes it more suitable for tasks like credits sequences, where you don't
want the texture to repeat and for the motion to only be performed once.
This new scale filter computes pixels by weighing the coverage area of
source pixels over the target pixel. This algorithm works well for both
upsampling and downsampling, but was mainly designed to upscale
high-quality low-resolution sources like RGB/HDMI retro consoles. I've
heard of people using odd workarounds like scaling up to very high
resolutions before scaling back down to preserve pixel shartpness. This
algorithm directly addresses this use-case in a much more direct
fashion.
The Area scale filter does a better job of preserving the thickness of
thin features than the Point filter.
The Area scale filter does not look at source pixels that lie outside
of the target pixel, leading to a much sharper image than Bilinear,
Bicubic, and Lanczos filters.
This filter should interpolate pixels in linear space, but OBS is not
equipped to do that at the moment.
libobs: Add GPU effect, and wire up scene serialization.
obs-filters: Add Area as an option for scale_filter.
UI: Add Area as an option for both scene items, and canvas downscaling.
Allows inverting the polarity of the audio data, which can be useful for
ether purposefully canceling out audio or preventing audio cancellation.
Amends pull request obsproject/obs-studio#1404
Gol-D-Ace
Jérémy Farnaud
jpark37
VodBox
Clayton Groeneveld
James Park
Jim
Colin Edwards
pkviet
Philip Loche
Alex Anderson
Cephas Reis
Richard Stanway
Julian Miller