42 lines
1.2 KiB
C
42 lines
1.2 KiB
C
#ifndef _ESP_DOA_H_
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#define _ESP_DOA_H_
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#include <stdint.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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typedef struct doa_handle_t doa_handle_t;
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/**
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* @brief Initialize SRP-PHAT processor
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* @param fs Sampling rate (Hz), e.g., 16000
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* @param resolution Angular search resolution (degrees), e.g., 20
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* @param d_mics Microphone spacing (meters), e.g., 0.06
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* @param input_timedate_samples input timedate samples, e.g., 1024
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* @return Initialized doa_handle_t object pointer, Recommend using the above configuration for better performance
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*/
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doa_handle_t *esp_doa_create(int fs, float resolution, float d_mics, int input_timedate_samples);
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/**
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* @brief Release all allocated resources
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* @param doa doa_handle_t instance pointer to be freed
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*/
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void esp_doa_destroy(doa_handle_t *doa);
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/**
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* @brief Process audio frame for direction estimation
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* @param doa doa_handle_t instance pointer
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* @param left Left channel 16-bit PCM data
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* @param right Right channel 16-bit PCM data
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* @return Estimated sound direction in degrees, e.g., 0-180
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*/
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float esp_doa_process(doa_handle_t *doa, int16_t* left, int16_t* right);
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#ifdef __cplusplus
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}
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#endif
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#endif /* _ESP_DOA_H_ */
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