chore: vendor selva_core from jnwnlee/selva@d7d40a9

Pure PyTorch SelVA source for SelvaModelLoader/FeatureExtractor/Sampler nodes. Imports rewritten from selva.* to selva_core.*. mel_converter.py: replaced librosa.filters.mel with pure-numpy implementation to avoid librosa→numba→NumPy version incompatibility in some ComfyUI environments. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
2026-04-04 15:18:09 +02:00
parent 762b19fd3a
commit 6bc3fd6443
106 changed files with 11323 additions and 0 deletions
@@ -0,0 +1,14 @@
+import torch
+
+
+def distribute_into_histogram(loss: torch.Tensor,
+                              t: torch.Tensor,
+                              num_bins: int = 25) -> tuple[torch.Tensor, torch.Tensor]:
+    loss = loss.detach().flatten()
+    t = t.detach().flatten()
+    t = (t * num_bins).long()
+    hist = torch.zeros(num_bins, device=loss.device)
+    count = torch.zeros(num_bins, device=loss.device)
+    hist.scatter_add_(0, t, loss)
+    count.scatter_add_(0, t, torch.ones_like(loss))
+    return hist, count