diff options
Diffstat (limited to 'source/blender/imbuf/intern/cineon/logImageCore.c')
| -rw-r--r-- | source/blender/imbuf/intern/cineon/logImageCore.c | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/source/blender/imbuf/intern/cineon/logImageCore.c b/source/blender/imbuf/intern/cineon/logImageCore.c index e88e9241443..6032f342ed8 100644 --- a/source/blender/imbuf/intern/cineon/logImageCore.c +++ b/source/blender/imbuf/intern/cineon/logImageCore.c @@ -93,6 +93,35 @@ setupLut(LogImageFile *logImage) { } } +/* set up the 10 bit to 16 bit and 16 bit to 10 bit tables */ +void +setupLut16(LogImageFile *logImage) { + + int i; + double f_black; + double scale; + + f_black = convertTo(logImage->params.blackPoint, logImage->params.whitePoint, logImage->params.gamma); + scale = 65535.0 / (1.0 - f_black); + + for (i = 0; i <= logImage->params.blackPoint; ++i) { + logImage->lut10_16[i] = 0; + } + for (; i < logImage->params.whitePoint; ++i) { + double f_i; + f_i = convertTo(i, logImage->params.whitePoint, logImage->params.gamma); + logImage->lut10_16[i] = (int)rint(scale * (f_i - f_black)); + } + for (; i < 1024; ++i) { + logImage->lut10_16[i] = 65535; + } + + for (i = 0; i < 65536; ++i) { + double f_i = f_black + (i / 65535.0) * (1.0 - f_black); + logImage->lut16_16[i] = convertFrom(f_i, logImage->params.whitePoint, logImage->params.gamma); + } +} + /* how many longwords to hold this many pixels? */ int pixelsToLongs(int numPixels) { |