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38 lines
1.3 KiB
Python
38 lines
1.3 KiB
Python
#!/usr/bin/env python
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# Copyright 2025 The HuggingFace Inc. team. All rights reserved.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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import numpy as np
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def rolling_vstack(buffer: np.ndarray, new_data: np.ndarray) -> np.ndarray:
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"""
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Rolling implementation of numpy.vstack to add new data in at the end of a fixed shape buffer in a rolling fashion.
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Args:
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buffer: The *fixed* shape buffer to update.
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new_data: The new data to add to the buffer.
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Returns:
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The updated buffer.
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"""
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buffer_size = buffer.shape[0]
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# Remove as many old audio samples as needed
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buffer[: -len(new_data)] = buffer[len(new_data) :]
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# Add new audio samples, only the newest if the buffer is already full
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buffer[-len(new_data) :] = new_data[-buffer_size:]
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return buffer
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