chromaprint.h

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// Copyright (C) 2010-2016  Lukas Lalinsky
// Distributed under the MIT license, see the LICENSE file for details.

#ifndef CHROMAPRINT_CHROMAPRINT_H_
#define CHROMAPRINT_CHROMAPRINT_H_

#ifdef __cplusplus
extern "C" {
#endif

#if (defined(_WIN32) || defined(_WIN64))
#   ifdef CHROMAPRINT_NODLL
#       define CHROMAPRINT_API
#   else
#       ifdef CHROMAPRINT_API_EXPORTS
#           define CHROMAPRINT_API __declspec(dllexport)
#       else
#           define CHROMAPRINT_API __declspec(dllimport)
#       endif
#   endif
#else
#   if __GNUC__ >= 4
#       define CHROMAPRINT_API __attribute__ ((visibility("default")))
#   else
#       define CHROMAPRINT_API
#   endif
#endif

#include <stdint.h>

struct ChromaprintContextPrivate;
typedef struct ChromaprintContextPrivate ChromaprintContext;

struct ChromaprintMatcherContextPrivate;
typedef struct ChromaprintMatcherContextPrivate ChromaprintMatcherContext;

#define CHROMAPRINT_VERSION_MAJOR 1
#define CHROMAPRINT_VERSION_MINOR 4
#define CHROMAPRINT_VERSION_PATCH 4

enum ChromaprintAlgorithm {
    CHROMAPRINT_ALGORITHM_TEST1 = 0,
    CHROMAPRINT_ALGORITHM_TEST2,
    CHROMAPRINT_ALGORITHM_TEST3,
    CHROMAPRINT_ALGORITHM_TEST4,                   // removes leading silence
    CHROMAPRINT_ALGORITHM_TEST5,
    CHROMAPRINT_ALGORITHM_DEFAULT = CHROMAPRINT_ALGORITHM_TEST2,
};

CHROMAPRINT_API const char *chromaprint_get_version(void);

CHROMAPRINT_API ChromaprintContext *chromaprint_new(int algorithm);

CHROMAPRINT_API void chromaprint_free(ChromaprintContext *ctx);

CHROMAPRINT_API int chromaprint_get_algorithm(ChromaprintContext *ctx);

CHROMAPRINT_API int chromaprint_set_option(ChromaprintContext *ctx, const char *name, int value);

CHROMAPRINT_API int chromaprint_get_num_channels(ChromaprintContext *ctx);

CHROMAPRINT_API int chromaprint_get_sample_rate(ChromaprintContext *ctx);

CHROMAPRINT_API int chromaprint_get_item_duration(ChromaprintContext *ctx);

CHROMAPRINT_API int chromaprint_get_item_duration_ms(ChromaprintContext *ctx);

CHROMAPRINT_API int chromaprint_get_delay(ChromaprintContext *ctx);

CHROMAPRINT_API int chromaprint_get_delay_ms(ChromaprintContext *ctx);

CHROMAPRINT_API int chromaprint_start(ChromaprintContext *ctx, int sample_rate, int num_channels);

CHROMAPRINT_API int chromaprint_feed(ChromaprintContext *ctx, const int16_t *data, int size);

CHROMAPRINT_API int chromaprint_finish(ChromaprintContext *ctx);

CHROMAPRINT_API int chromaprint_get_fingerprint(ChromaprintContext *ctx, char **fingerprint);

CHROMAPRINT_API int chromaprint_get_raw_fingerprint(ChromaprintContext *ctx, uint32_t **fingerprint, int *size);

CHROMAPRINT_API int chromaprint_get_raw_fingerprint_size(ChromaprintContext *ctx, int *size);

CHROMAPRINT_API int chromaprint_get_fingerprint_hash(ChromaprintContext *ctx, uint32_t *hash);

CHROMAPRINT_API int chromaprint_clear_fingerprint(ChromaprintContext *ctx);

CHROMAPRINT_API int chromaprint_encode_fingerprint(const uint32_t *fp, int size, int algorithm, char **encoded_fp, int *encoded_size, int base64);

CHROMAPRINT_API int chromaprint_decode_fingerprint(const char *encoded_fp, int encoded_size, uint32_t **fp, int *size, int *algorithm, int base64);

CHROMAPRINT_API int chromaprint_hash_fingerprint(const uint32_t *fp, int size, uint32_t *hash);

CHROMAPRINT_API void chromaprint_dealloc(void *ptr);

#ifdef __cplusplus
}
#endif

#endif