u_resampler.h

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// Copyright 2025, Collabora, Ltd.
// SPDX-License-Identifier: BSL-1.0
/*!
 * @file
 * @brief  Simple audio resampler
 * @author Beyley Cardellio <ep1cm1n10n123@gmail.com>
 * @ingroup aux_util
 */
 
#pragma once
 
#include <stddef.h>
#include <stdint.h>
 
#ifdef __cplusplus
extern "C" {
#endif
 
typedef float sample_t;
 
struct u_resampler
{
        float sample_rate;
 
        size_t num_samples;
        sample_t *samples;
 
        // static scratch buffer for resampling use
        sample_t *scratch;
 
        size_t read_index;
        size_t write_index;
};
 
struct u_resampler *
u_resampler_create(size_t num_samples, float sample_rate);
 
void
u_resampler_destroy(struct u_resampler *resampler);
 
size_t
u_resampler_read(struct u_resampler *resampler, sample_t *samples, size_t num_samples);
 
size_t
u_resampler_write(struct u_resampler *resampler, const sample_t *source_samples, size_t num_samples, float sample_rate);
 
void
u_resampler_reset(struct u_resampler *resampler);
 
#ifdef __cplusplus
}
#endif