lws-audio-features.h

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/*
 * libwebsockets - small server side websockets and web server implementation
 *
 * Copyright (C) 2010 - 2024 Andy Green <andy@warmcat.com>
 *
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 * of this software and associated documentation files (the "Software"), to
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 * sell copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
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 * The above copyright notice and this permission notice shall be included in
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#ifndef _LWS_AUDIO_FEATURES_H
#define _LWS_AUDIO_FEATURES_H
 
typedef struct lws_audio_vu_info {
    double squelch_level; /* energy below this is reported as 0 */
    double max_energy;    /* max expected energy for log scaling */
    int sample_stride;    /* step size for sampling (e.g. 48) */
} lws_audio_vu_info_t;

LWS_VISIBLE LWS_EXTERN int
lws_media_audio_calc_energy(const lws_audio_vu_info_t *info,
                            const int16_t *pcm, size_t len_samples, int *result);
 
#endif