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Diffstat (limited to 'include/stillness_detector.h')
| -rw-r--r-- | include/stillness_detector.h | 71 |
1 files changed, 0 insertions, 71 deletions
diff --git a/include/stillness_detector.h b/include/stillness_detector.h deleted file mode 100644 index 65598d4d5c..0000000000 --- a/include/stillness_detector.h +++ /dev/null @@ -1,71 +0,0 @@ -/* Copyright 2019 The Chromium OS Authors. All rights reserved. - * Use of this source code is governed by a BSD-style license that can be - * found in the LICENSE file. - */ - -#ifndef __CROS_EC_STILLNESS_DETECTOR_H -#define __CROS_EC_STILLNESS_DETECTOR_H - -#include "common.h" -#include "math_util.h" -#include "stdbool.h" -#include <stdint.h> - -struct still_det { - /** Variance threshold for the stillness confidence score. [units]^2 */ - fp_t var_threshold; - - /** The minimum window duration to consider a still sample. */ - uint32_t min_batch_window; - - /** The maximum window duration to consider a still sample. */ - uint32_t max_batch_window; - - /** - * The minimum number of samples in a window to consider a still sample. - */ - uint16_t min_batch_size; - - /** The timestamp of the first sample in the current batch. */ - uint32_t window_start_time; - - /** The number of samples in the current batch. */ - uint16_t num_samples; - - /** Accumulators used for calculating stillness. */ - fp_t acc_x, acc_y, acc_z, acc_xx, acc_yy, acc_zz, mean_x, mean_y, - mean_z; -}; - -#define STILL_DET(VAR_THRES, MIN_BATCH_WIN, MAX_BATCH_WIN, MIN_BATCH_SIZE) \ - ((struct still_det){ \ - .var_threshold = VAR_THRES, \ - .min_batch_window = MIN_BATCH_WIN, \ - .max_batch_window = MAX_BATCH_WIN, \ - .min_batch_size = MIN_BATCH_SIZE, \ - .window_start_time = 0, \ - .acc_x = 0.0f, \ - .acc_y = 0.0f, \ - .acc_z = 0.0f, \ - .acc_xx = 0.0f, \ - .acc_yy = 0.0f, \ - .acc_zz = 0.0f, \ - .mean_x = 0.0f, \ - .mean_y = 0.0f, \ - .mean_z = 0.0f, \ - }) - -/** - * Update a stillness detector with a new sample. - * - * @param sample_time The timestamp of the sample to add. - * @param x The x component of the sample to add. - * @param y The y component of the sample to add. - * @param z The z component of the sample to add. - * @return True if the sample triggered a complete batch and mean_* are now - * valid. - */ -bool still_det_update(struct still_det *still_det, uint32_t sample_time, fp_t x, - fp_t y, fp_t z); - -#endif /* __CROS_EC_STILLNESS_DETECTOR_H */ |