From 729867b14754bffd98a3406b5d3a2eb9d09bc3bc Mon Sep 17 00:00:00 2001
From: Gustaf Rydholm <gustaf.rydholm@gmail.com>
Date: Wed, 1 Jun 2022 23:11:05 +0200
Subject: WIP conformer

---
 text_recognizer/networks/conformer/attention.py       |  0
 text_recognizer/networks/conformer/block.py           |  0
 text_recognizer/networks/conformer/depth_wise_conv.py | 12 ++++++++++++
 text_recognizer/networks/conformer/glu.py             | 12 ++++++++++++
 text_recognizer/networks/conformer/mlp.py             |  0
 text_recognizer/networks/conformer/scale.py           | 13 +++++++++++++
 6 files changed, 37 insertions(+)
 delete mode 100644 text_recognizer/networks/conformer/attention.py
 create mode 100644 text_recognizer/networks/conformer/block.py
 create mode 100644 text_recognizer/networks/conformer/depth_wise_conv.py
 create mode 100644 text_recognizer/networks/conformer/glu.py
 create mode 100644 text_recognizer/networks/conformer/mlp.py
 create mode 100644 text_recognizer/networks/conformer/scale.py

(limited to 'text_recognizer/networks/conformer')

diff --git a/text_recognizer/networks/conformer/attention.py b/text_recognizer/networks/conformer/attention.py
deleted file mode 100644
index e69de29..0000000
diff --git a/text_recognizer/networks/conformer/block.py b/text_recognizer/networks/conformer/block.py
new file mode 100644
index 0000000..e69de29
diff --git a/text_recognizer/networks/conformer/depth_wise_conv.py b/text_recognizer/networks/conformer/depth_wise_conv.py
new file mode 100644
index 0000000..9465b7c
--- /dev/null
+++ b/text_recognizer/networks/conformer/depth_wise_conv.py
@@ -0,0 +1,12 @@
+"""Depthwise 1D convolution."""
+from torch import nn, Tensor
+
+
+class DepthwiseConv1D(nn.Module):
+    def __init__(self, in_channels: int, out_channels: int, kernel_size: int) -> None:
+        super().__init__()
+        self.conv = nn.Conv1d(in_channels=in_channels, out_channels=out_channels, kernel_size=kernel_size, groups=in_channels,
+                padding="same")
+
+    def forward(self, x: Tensor) -> Tensor:
+        return self.conv(x)
diff --git a/text_recognizer/networks/conformer/glu.py b/text_recognizer/networks/conformer/glu.py
new file mode 100644
index 0000000..016b684
--- /dev/null
+++ b/text_recognizer/networks/conformer/glu.py
@@ -0,0 +1,12 @@
+"""GLU layer."""
+from torch import nn, Tensor
+
+
+class GLU(nn.Module):
+    def __init__(self, dim: int) -> None:
+        super().__init__()
+        self.dim = dim
+        
+    def forward(self, x: Tensor) -> Tensor:
+        out, gate = x.chunk(2, dim=self.dim)
+        return out * gate.sigmoid()
diff --git a/text_recognizer/networks/conformer/mlp.py b/text_recognizer/networks/conformer/mlp.py
new file mode 100644
index 0000000..e69de29
diff --git a/text_recognizer/networks/conformer/scale.py b/text_recognizer/networks/conformer/scale.py
new file mode 100644
index 0000000..da736a3
--- /dev/null
+++ b/text_recognizer/networks/conformer/scale.py
@@ -0,0 +1,13 @@
+"""Scale layer."""
+from typing import Dict
+from torch import nn, Tensor
+
+
+class Scale(nn.Module):
+    def __init__(self, scale: float, fn: nn.Module) -> None:
+        super().__init__()
+        self.scale = scale
+        self.fn = fn
+
+    def forward(self, x: Tensor, kwargs: Dict) -> Tensor:
+        return self.fn(x, **kwargs) * self.scale
-- 
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