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https://github.com/cookiengineer/audacity
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4c0aa60871
The main operational difference is that for v4 effect onward, the sound name will now be *TRACK*. This will not affect existing effects since they use version number 3 or less. This also provides the Nyquist effect with much more information about the current processing: Variable Property What *AUDACITY* VERSION current Audacity version number *SYSTEM-DIR* BASE Audacity install path *SYSTEM-DIR* DATA Audacity data path *SYSTEM-DIR* HELP Audacity help path *SYSTEM-DIR* TEMP Audacity temp file path *SYSTEM-DIR* PLUGIN Audacity search path for Nyquist plugins *PROJECT* RATE current project sample rate *PROJECT* TRACKS total number of tracks in the project *PROJECT* WAVETRACKS number of wave tracks in the project *PROJECT* LABELTRACKS number of label tracks in the project *PROJECT* MIDITRACKS number of midi tracks in the project *PROJECT* TIMETRACKS number of time tracks in the project *SELECTION* START start time of current selection *SELECTION* END end time of current selection *SELECTION* TRACKS number of tracks in the current selection *SELECTION* CHANNELS number of channels in the current selection *SELECTION* LOW-HZ low frequency from spectrogram (if available, else nil) *SELECTION* CENTER-HZ center frequence (calculated) (if available, else nil) *SELECTION* HIGH-HZ high frequence from spectrogram (if available, else nil) *SELECTION* BANDWIDTH bandwidth in octaves (calculated) (if available, else nil) *SELECTION* PEAK-LEVEL peak amplitude for the current selection *TRACK* INDEX 1-based index of track being processed *TRACK* NAME name of track *TRACK* TYPE type of track: wave, midi, label, time *TRACK* VIEW track view: Waveform, Waveform (dB), etc. *TRACK* CHANNELS number of channels in the track *TRACK* START-TIME start time of track *TRACK* END-TIME end time of track *TRACK* GAIN track gain *TRACK* PAN track pan *TRACK* RATE sample rate of track *TRACK* FORMAT sample format: 16 (int), 24 (int), 32.0 (float) *TRACK* CLIPS list of start/end times for clips for each channel
100 lines
2.7 KiB
C
100 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_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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