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