Dynamic range converter with generic architecture and methods for use therewith

A dynamic range converter comprising:

• a first color space converter configured to convert a source color space of a source video having a source dynamic range to nonlinear color space signals;
• a linearizer configured to convert the nonlinear color space signals to linearized color space signals having a mastering dynamic range via a piecewise linear interpolation of a transfer function;
• a color volume transformer configured to apply dynamic color transform metadata associated with the source video to generate master adjusted color space signals from the linearized color space signals;
• a delinearizer configured to convert the master adjusted color space signals to nonlinearized color space signals via a piecewise linear interpolation of an inverse transfer function in accordance with a display dynamic range;
• and
• a second color space converter configured to convert the nonlinearized color space signals to display domain signals;
• wherein the color volume transformer applies gamut shaping, luminance tone mapping, chrominance tone mapping and additional color space conversion and wherein the color volume transformer includes:
• a third color space converter configured to that apply the gamut shaping to the linearized color space signals in accordance with the dynamic color transform metadata to generate gamut shaped components;
• a first tone mapper configured to apply first tone mapping by scaling the gamut shaped components in accordance with the dynamic color transform metadata to generate first mapped components;
• a fourth color space converter configured to color converts the first mapped components in accordance with the dynamic color transform metadata to generate color remapped components;
• a second tone mapper configured to apply second tone mapping by scaling the color remapped components in accordance with the dynamic color transform metadata to generate second mapped components;
• and
• a fifth color space converter configured to color converts the second mapped components in accordance with the dynamic color transform metadata to generate the master adjusted color space signals.