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/**********************************************************************
nyx.h
Nyx: A very simple external interface to Nyquist
Dominic Mazzoni
**********************************************************************/
#ifndef __NYX__
#define __NYX__
#ifdef __cplusplus
extern "C"
{
#endif /* __cplusplus */
#define nyx_returns_start_and_end_time 1
typedef enum {
nyx_error,
nyx_audio,
nyx_int,
nyx_double,
nyx_string,
nyx_labels
} nyx_rval;
void nyx_init();
void nyx_cleanup();
void nyx_set_xlisp_path(const char *path);
/* should return return 0 for success, -1 for error */
typedef int (*nyx_audio_callback)(float *buffer,
int channel,
long start, long len,
long totlen,
void *userdata);
typedef void (*nyx_output_callback)(int c,
void *userdata);
typedef void (*nyx_os_callback)(void *userdata);
/* Set to NULL to stop capturing output */
void nyx_capture_output(nyx_output_callback callback,
void *userdata);
/* Set to NULL to stop checking */
void nyx_set_os_callback(nyx_os_callback callback,
void *userdata);
void nyx_stop();
void nyx_break();
void nyx_continue();
void nyx_set_audio_params(double rate, long len);
void nyx_set_input_audio(nyx_audio_callback callback,
void *userdata,
int num_channels,
long len, double rate);
char *nyx_get_audio_name();
void nyx_set_audio_name(const char *name);
nyx_rval nyx_eval_expression(const char *expr);
/** @brief Get the number of channels in the Nyquist audio object
*
* @return The positive integer number of audio channels in the
* Nyquist audio object, 0 if not an audio object, -1 one if
* Nyquist returns an array of samples (which we can't handle)
*/
int nyx_get_audio_num_channels();
int nyx_get_audio(nyx_audio_callback callback,
void *userdata);
int nyx_get_int();
double nyx_get_double();
const char *nyx_get_string();
unsigned int nyx_get_num_labels();
void nyx_get_label(unsigned int index,
double *start_time,
double *end_time,
const char **label);
const char *nyx_get_error_str();
#ifdef __cplusplus
}
#endif /* __cplusplus */
#endif /* __NYX__ */
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