wehub-resource-sync
50 lines
1.4 KiB
C
50 lines
1.4 KiB
C
/* Copyright 2018 The TensorFlow Authors. All Rights Reserved.
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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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http://www.apache.org/licenses/LICENSE-2.0
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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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==============================================================================*/
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#ifndef TENSORFLOW_LITE_EXPERIMENTAL_MICROFRONTEND_LIB_WINDOW_H_
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#define TENSORFLOW_LITE_EXPERIMENTAL_MICROFRONTEND_LIB_WINDOW_H_
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#include <stdint.h>
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#include <stdlib.h>
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#define kFrontendWindowBits 12
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#ifdef __cplusplus
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extern "C" {
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#endif
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struct WindowState {
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size_t size;
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int16_t* coefficients;
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size_t step;
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int16_t* input;
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size_t input_used;
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int16_t* output;
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int16_t max_abs_output_value;
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};
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// Applies a window to the samples coming in, stepping forward at the given
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// rate.
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int WindowProcessSamples(struct WindowState* state, const int16_t* samples,
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size_t num_samples, size_t* num_samples_read);
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void WindowReset(struct WindowState* state);
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#ifdef __cplusplus
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} // extern "C"
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#endif
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#endif // TENSORFLOW_LITE_EXPERIMENTAL_MICROFRONTEND_LIB_WINDOW_H_
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