diff options
| -rw-r--r-- | libs/ardour/ardour/dsp_filter.h | 16 | ||||
| -rw-r--r-- | libs/ardour/ardour/tempo.h | 7 |
2 files changed, 16 insertions, 7 deletions
diff --git a/libs/ardour/ardour/dsp_filter.h b/libs/ardour/ardour/dsp_filter.h index 0ecf08cf44..ddf61075cd 100644 --- a/libs/ardour/ardour/dsp_filter.h +++ b/libs/ardour/ardour/dsp_filter.h @@ -27,18 +27,20 @@ namespace ARDOUR { namespace DSP { - /** C Shared Memory + /** C/C++ Shared Memory * - * A convenience class representing a C array or float[] or int32_t[] + * A convenience class representing a C array of float[] or int32_t[] * data values. This is useful for lua scripts to perform DSP operations - * directly using C, C++. - * Access to this memory area is always 4 byte aligned: float, int. + * directly using C/C++ with CPU Hardware acceleration. * - * This memory area can also be shared between different instances. + * Access to this memory area is always 4 byte aligned. The data + * is interpreted either as float or as int. + * + * This memory area can also be shared between different instances + * or the same lua plugin (DSP, GUI). * * Since memory allocation is not realtime safe it should be * allocated during dsp_init() or dsp_configure(). - * * The memory is free()ed automatically when the lua instance is * destroyed. */ @@ -220,7 +222,7 @@ namespace ARDOUR { namespace DSP { void run (float *data, const uint32_t n_samples); /** setup filter, compute coefficients * - * @param t filter type + * @param t filter type (LowPass, HighPass, etc) * @param freq filter frequency * @param Q filter quality * @param gain filter gain diff --git a/libs/ardour/ardour/tempo.h b/libs/ardour/ardour/tempo.h index 89e41938d2..c64039bd06 100644 --- a/libs/ardour/ardour/tempo.h +++ b/libs/ardour/ardour/tempo.h @@ -47,11 +47,18 @@ class TempoMap; /** Tempo, the speed at which musical time progresses (BPM). */ class LIBARDOUR_API Tempo { public: + /** + * @param bpm Beats Per Minute + * @param type Note Type (default `4': quarter note) + */ Tempo (double bpm, double type=4.0) // defaulting to quarter note : _beats_per_minute (bpm), _note_type(type) {} double beats_per_minute () const { return _beats_per_minute;} double note_type () const { return _note_type;} + /** audio samples per beat + * @param sr samplerate + */ double frames_per_beat (framecnt_t sr) const { return (60.0 * sr) / _beats_per_minute; } |