From 3eee773814c392e497557bbad501e0add4c8eca9 Mon Sep 17 00:00:00 2001
From: 游雁 <zhifu.gzf@alibaba-inc.com>
Date: 星期日, 09 六月 2024 02:11:42 +0800
Subject: [PATCH] fix bug

---
 funasr/datasets/large_datasets/datapipes/map.py |   20 ++++++++++++++++++++
 1 files changed, 20 insertions(+), 0 deletions(-)

diff --git a/funasr/datasets/large_datasets/datapipes/map.py b/funasr/datasets/large_datasets/datapipes/map.py
new file mode 100644
index 0000000..f7211f9
--- /dev/null
+++ b/funasr/datasets/large_datasets/datapipes/map.py
@@ -0,0 +1,20 @@
+from torch.utils.data import IterableDataset
+
+
+def default_fn(data):
+    return data
+
+
+class MapperIterDataPipe(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:
+            yield self.fn(data)

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