diff options
| author | Carl Hetherington <cth@carlh.net> | 2015-04-22 13:58:16 +0100 |
|---|---|---|
| committer | Carl Hetherington <cth@carlh.net> | 2015-04-22 13:58:16 +0100 |
| commit | 86bfdeb77f55b379302a65b22f57fc0583ec6b3c (patch) | |
| tree | 66ed8eb0e4855c520b1b1a0d9dae052a0ad5bfe6 /src/modified_gamma_transfer_function.cc | |
| parent | 3c88524c9a2418d6d2d8b8eac29737c95b9a7411 (diff) | |
Express colour conversions as chromaticities and adjust so that
everything is specified as something_to_xyz and then you can get
an inverse LUT if you want one.
Diffstat (limited to 'src/modified_gamma_transfer_function.cc')
| -rw-r--r-- | src/modified_gamma_transfer_function.cc | 13 |
1 files changed, 4 insertions, 9 deletions
diff --git a/src/modified_gamma_transfer_function.cc b/src/modified_gamma_transfer_function.cc index fe9266bd..850c7351 100644 --- a/src/modified_gamma_transfer_function.cc +++ b/src/modified_gamma_transfer_function.cc @@ -25,9 +25,8 @@ using boost::shared_ptr; using boost::dynamic_pointer_cast; using namespace dcp; -ModifiedGammaTransferFunction::ModifiedGammaTransferFunction (bool inverse, double power, double threshold, double A, double B) - : TransferFunction (inverse) - , _power (power) +ModifiedGammaTransferFunction::ModifiedGammaTransferFunction (double power, double threshold, double A, double B) + : _power (power) , _threshold (threshold) , _A (A) , _B (B) @@ -36,11 +35,11 @@ ModifiedGammaTransferFunction::ModifiedGammaTransferFunction (bool inverse, doub } double * -ModifiedGammaTransferFunction::make_lut (int bit_depth) const +ModifiedGammaTransferFunction::make_lut (int bit_depth, bool inverse) const { int const bit_length = int(std::pow(2.0f, bit_depth)); double* lut = new double[bit_length]; - if (_inverse) { + if (inverse) { double const threshold = _threshold / _B; for (int i = 0; i < bit_length; ++i) { double const p = static_cast<double> (i) / (bit_length - 1); @@ -67,10 +66,6 @@ ModifiedGammaTransferFunction::make_lut (int bit_depth) const bool ModifiedGammaTransferFunction::about_equal (shared_ptr<const TransferFunction> other, double epsilon) const { - if (!TransferFunction::about_equal (other, epsilon)) { - return false; - } - shared_ptr<const ModifiedGammaTransferFunction> o = dynamic_pointer_cast<const ModifiedGammaTransferFunction> (other); if (!o) { return false; |