X-Git-Url: https://main.carlh.net/gitweb/?a=blobdiff_plain;f=libs%2Fardour%2Fardour%2Futils.h;h=f3767d471a3c4a03a4ce90a7ef01fde5fd7b817f;hb=dbfe991cd862aa1d420c65c9808e5f4e199995ed;hp=f4c7e585c42722139d624565f92acd233fa05743;hpb=baacf1c7b44773cc46ac2e11839502c5ae23f8ac;p=ardour.git diff --git a/libs/ardour/ardour/utils.h b/libs/ardour/ardour/utils.h index f4c7e585c4..f3767d471a 100644 --- a/libs/ardour/ardour/utils.h +++ b/libs/ardour/ardour/utils.h @@ -28,19 +28,25 @@ #include #include -#if defined(HAVE_COREAUDIO) || defined(HAVE_AUDIOUNITS) +#if __APPLE__ #include -#endif - -bool string_is_affirmative (const std::string&); +#endif /* __APPLE__ */ -#include "ardour.h" +#include "ardour/libardour_visibility.h" +#include "ardour/ardour.h" +#include "ardour/data_type.h" +#include "ardour/dB.h" class XMLNode; -Glib::ustring legalize_for_path (Glib::ustring str); -XMLNode* find_named_node (const XMLNode& node, std::string name); -std::string bool_as_string (bool); +namespace ARDOUR { + +LIBARDOUR_API std::string legalize_for_path (const std::string& str); +LIBARDOUR_API std::string legalize_for_universal_path (const std::string& str); +LIBARDOUR_API std::string legalize_for_uri (const std::string& str); +LIBARDOUR_API std::string legalize_for_path_2X (const std::string& str); +LIBARDOUR_API XMLNode* find_named_node (const XMLNode& node, std::string name); +LIBARDOUR_API std::string bool_as_string (bool); static inline float f_max(float x, float a) { x -= a; @@ -51,61 +57,123 @@ static inline float f_max(float x, float a) { return (x); } -std::string bump_name_once(const std::string& s, char delimiter); +LIBARDOUR_API std::string bump_name_once(const std::string& s, char delimiter); +LIBARDOUR_API std::string bump_name_number(const std::string& s); -int cmp_nocase (const std::string& s, const std::string& s2); +LIBARDOUR_API int cmp_nocase (const std::string& s, const std::string& s2); +LIBARDOUR_API int cmp_nocase_utf8 (const std::string& s1, const std::string& s2); -int touch_file(Glib::ustring path); +LIBARDOUR_API std::string region_name_from_path (std::string path, bool strip_channels, bool add_channel_suffix = false, uint32_t total = 0, uint32_t this_one = 0); +LIBARDOUR_API bool path_is_paired (std::string path, std::string& pair_base); -Glib::ustring path_expand (Glib::ustring); -Glib::ustring region_name_from_path (Glib::ustring path, bool strip_channels, bool add_channel_suffix = false, uint32_t total = 0, uint32_t this_one = 0); -bool path_is_paired (Glib::ustring path, Glib::ustring& pair_base); +LIBARDOUR_API void compute_equal_power_fades (ARDOUR::framecnt_t nframes, float* in, float* out); -void compute_equal_power_fades (ARDOUR::nframes_t nframes, float* in, float* out); +LIBARDOUR_API const char* sync_source_to_string (ARDOUR::SyncSource src, bool sh = false); +LIBARDOUR_API ARDOUR::SyncSource string_to_sync_source (std::string str); -const char* sync_source_to_string (ARDOUR::SyncSource src); -ARDOUR::SyncSource string_to_sync_source (std::string str); - -const char* edit_mode_to_string (ARDOUR::EditMode); -ARDOUR::EditMode string_to_edit_mode (std::string); +LIBARDOUR_API const char* edit_mode_to_string (ARDOUR::EditMode); +LIBARDOUR_API ARDOUR::EditMode string_to_edit_mode (std::string); +#undef OLD_GAIN_MATH +#define OLD_GAIN_MATH static inline double gain_to_slider_position (ARDOUR::gain_t g) { if (g == 0) return 0; - return pow((6.0*log(g)/log(2.0)+192.0)/198.0, 8.0); +#ifndef OLD_GAIN_MATH + /* Power Law With Exponential Cutoff 2D, fit to data from TC Spectra + console (image of fader gradations + + y = C * x(-T) * exp(-x/K) + + C = 8.2857630370864188E-01 + T = -5.1526743785019269E-01 + K = 7.8990885960495589E+00 + + */ + + return 8.2857630370864188E-01 * pow(g,5.1526743785019269E-01) * exp (-g/7.8990885960495589E+00); +#else + return pow((6.0*log(g)/log(2.0)+192.0)/198.0, 8.0); +#endif } static inline ARDOUR::gain_t slider_position_to_gain (double pos) { + if (pos == 0.0) { + return 0.0; + } + +#ifndef OLD_GAIN_MATH + /* 5th order polynomial function fit to data from a TC Spectra console + fader (image of fader gradations). + + y = a + bx1 + cx2 + dx3 + fx4 + gx5 + + a = -1.1945480381045521E-02 + b = 1.5809476525537265E+00 + c = -1.5850710838966151E+01 + d = 6.1643128605961991E+01 + f = -8.5525246160607693E+01 + g = 4.1312725896188283E+01 + + */ + + double p = pos; + double g = -1.1945480381045521E-02; + + g += 1.5809476525537265E+00 * pos; + pos *= p; + g += -1.5850710838966151E+01 * pos; + pos *= p; + g += 6.1643128605961991E+01 * pos; + pos *= p; + g += -8.5525246160607693E+01 * pos; + pos *= p; + g += 4.1312725896188283E+01 * pos; + + return g; +#else /* XXX Marcus writes: this doesn't seem right to me. but i don't have a better answer ... */ if (pos == 0.0) return 0; return pow (2.0,(sqrt(sqrt(sqrt(pos)))*198.0-192.0)/6.0); +#endif } +#undef OLD_GAIN_MATH + +LIBARDOUR_API double gain_to_slider_position_with_max (double g, double max_gain = 2.0); +LIBARDOUR_API double slider_position_to_gain_with_max (double g, double max_gain = 2.0); /* I don't really like hard-coding these falloff rates here * Probably should use a map of some kind that could be configured * These rates are db/sec. */ -#define METER_FALLOFF_OFF 0.0f -#define METER_FALLOFF_SLOWEST 6.6f // BBC standard -#define METER_FALLOFF_SLOW 8.6f // BBC standard -#define METER_FALLOFF_MEDIUM 20.0f -#define METER_FALLOFF_FAST 32.0f -#define METER_FALLOFF_FASTER 46.0f -#define METER_FALLOFF_FASTEST 70.0f - -float meter_falloff_to_float (ARDOUR::MeterFalloff); -ARDOUR::MeterFalloff meter_falloff_from_float (float); -float meter_falloff_to_db_per_sec (float); - -#if defined(HAVE_COREAUDIO) || defined(HAVE_AUDIOUNITS) -std::string CFStringRefToStdString(CFStringRef stringRef); -#endif // HAVE_COREAUDIO +#define METER_FALLOFF_OFF 0.0f +#define METER_FALLOFF_SLOWEST 6.6f // BBC standard +#define METER_FALLOFF_SLOW 8.6f // BBC standard, EBU 24dB / 2.8sec +#define METER_FALLOFF_SLOWISH 12.0f // DIN 20dB / 1.7 sec +#define METER_FALLOFF_MODERATE 13.3f // EBU-PPM, IRT PPM- 20dB / 1.5 sec +#define METER_FALLOFF_MEDIUM 20.0f +#define METER_FALLOFF_FAST 32.0f + +LIBARDOUR_API float meter_falloff_to_float (ARDOUR::MeterFalloff); +LIBARDOUR_API ARDOUR::MeterFalloff meter_falloff_from_float (float); +LIBARDOUR_API float meter_falloff_to_db_per_sec (float); + +LIBARDOUR_API const char* native_header_format_extension (ARDOUR::HeaderFormat, const ARDOUR::DataType& type); +LIBARDOUR_API bool matching_unsuffixed_filename_exists_in (const std::string& dir, const std::string& name); + +LIBARDOUR_API uint32_t how_many_dsp_threads (); + +#if __APPLE__ +LIBARDOUR_API std::string CFStringRefToStdString(CFStringRef stringRef); +#endif // __APPLE__ + +} //namespave #endif /* __ardour_utils_h__ */