Remove old API
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@ -81,76 +81,6 @@ LIBARDOUR_API ARDOUR::SyncSource string_to_sync_source (std::string str);
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LIBARDOUR_API const char* edit_mode_to_string (ARDOUR::EditMode);
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LIBARDOUR_API ARDOUR::EditMode string_to_edit_mode (std::string);
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#undef OLD_GAIN_MATH
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#define OLD_GAIN_MATH
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static inline double
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gain_to_slider_position (ARDOUR::gain_t g)
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{
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if (g == 0) return 0;
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#ifndef OLD_GAIN_MATH
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/* Power Law With Exponential Cutoff 2D, fit to data from TC Spectra
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console (image of fader gradations
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y = C * x(-T) * exp(-x/K)
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C = 8.2857630370864188E-01
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T = -5.1526743785019269E-01
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K = 7.8990885960495589E+00
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*/
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return 8.2857630370864188E-01 * pow(g,5.1526743785019269E-01) * exp (-g/7.8990885960495589E+00);
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#else
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return pow((6.0*log(g)/log(2.0)+192.0)/198.0, 8.0);
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#endif
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}
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static inline ARDOUR::gain_t
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slider_position_to_gain (double pos)
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{
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if (pos == 0.0) {
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return 0.0;
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}
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#ifndef OLD_GAIN_MATH
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/* 5th order polynomial function fit to data from a TC Spectra console
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fader (image of fader gradations).
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y = a + bx1 + cx2 + dx3 + fx4 + gx5
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a = -1.1945480381045521E-02
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b = 1.5809476525537265E+00
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c = -1.5850710838966151E+01
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d = 6.1643128605961991E+01
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f = -8.5525246160607693E+01
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g = 4.1312725896188283E+01
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*/
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double p = pos;
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double g = -1.1945480381045521E-02;
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g += 1.5809476525537265E+00 * pos;
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pos *= p;
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g += -1.5850710838966151E+01 * pos;
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pos *= p;
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g += 6.1643128605961991E+01 * pos;
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pos *= p;
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g += -8.5525246160607693E+01 * pos;
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pos *= p;
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g += 4.1312725896188283E+01 * pos;
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return g;
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#else
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/* XXX Marcus writes: this doesn't seem right to me. but i don't have a better answer ... */
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if (pos == 0.0) return 0;
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return pow (2.0,(sqrt(sqrt(sqrt(pos)))*198.0-192.0)/6.0);
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#endif
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}
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#undef OLD_GAIN_MATH
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LIBARDOUR_API double gain_to_slider_position_with_max (double g, double max_gain = 2.0);
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LIBARDOUR_API double slider_position_to_gain_with_max (double g, double max_gain = 2.0);
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