From 0bd1a4d6a9893e45438505514a063d9deee91f21 Mon Sep 17 00:00:00 2001
From: Xingchen Song(宋星辰) <xingchensong1996@163.com>
Date: 星期二, 11 六月 2024 14:00:10 +0800
Subject: [PATCH] [fix] better solution for handling empty result (#1796)

---
 funasr/datasets/large_datasets/datapipes/filter.py |   23 +++++++++++++++++++++++
 1 files changed, 23 insertions(+), 0 deletions(-)

diff --git a/funasr/datasets/large_datasets/datapipes/filter.py b/funasr/datasets/large_datasets/datapipes/filter.py
new file mode 100644
index 0000000..c4f045d
--- /dev/null
+++ b/funasr/datasets/large_datasets/datapipes/filter.py
@@ -0,0 +1,23 @@
+from torch.utils.data import IterableDataset
+
+
+def default_fn(data):
+    return data
+
+
+class FilterIterDataPipe(IterableDataset):
+
+    def __init__(self, datapipe, fn=default_fn):
+        self.datapipe = datapipe
+        self.fn = fn
+
+    def set_epoch(self, epoch):
+        self.datapipe.set_epoch(epoch)
+
+    def __iter__(self):
+        assert callable(self.fn)
+        for data in self.datapipe:
+            if self.fn(data):
+                yield data
+            else:
+                continue

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