1 files changed, 81 insertions, 0 deletions
diff --git a/source/blender/compositor/operations/COM_ColorBalanceASCCDLOperation.cc b/source/blender/compositor/operations/COM_ColorBalanceASCCDLOperation.cc
new file mode 100644
index 00000000000..44eef1e19cd
--- /dev/null
+++ b/source/blender/compositor/operations/COM_ColorBalanceASCCDLOperation.cc
@@ -0,0 +1,81 @@
+/*
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ * Copyright 2011, Blender Foundation.
+ */
+
+#include "COM_ColorBalanceASCCDLOperation.h"
+#include "BLI_math.h"
+
+inline float colorbalance_cdl(float in, float offset, float power, float slope)
+{
+  float x = in * slope + offset;
+
+  /* prevent NaN */
+  if (x < 0.0f) {
+    x = 0.0f;
+  }
+
+  return powf(x, power);
+}
+
+ColorBalanceASCCDLOperation::ColorBalanceASCCDLOperation()
+{
+  this->addInputSocket(COM_DT_VALUE);
+  this->addInputSocket(COM_DT_COLOR);
+  this->addOutputSocket(COM_DT_COLOR);
+  this->m_inputValueOperation = nullptr;
+  this->m_inputColorOperation = nullptr;
+  this->setResolutionInputSocketIndex(1);
+}
+
+void ColorBalanceASCCDLOperation::initExecution()
+{
+  this->m_inputValueOperation = this->getInputSocketReader(0);
+  this->m_inputColorOperation = this->getInputSocketReader(1);
+}
+
+void ColorBalanceASCCDLOperation::executePixelSampled(float output[4],
+                                                      float x,
+                                                      float y,
+                                                      PixelSampler sampler)
+{
+  float inputColor[4];
+  float value[4];
+
+  this->m_inputValueOperation->readSampled(value, x, y, sampler);
+  this->m_inputColorOperation->readSampled(inputColor, x, y, sampler);
+
+  float fac = value[0];
+  fac = MIN2(1.0f, fac);
+  const float mfac = 1.0f - fac;
+
+  output[0] = mfac * inputColor[0] +
+              fac * colorbalance_cdl(
+                        inputColor[0], this->m_offset[0], this->m_power[0], this->m_slope[0]);
+  output[1] = mfac * inputColor[1] +
+              fac * colorbalance_cdl(
+                        inputColor[1], this->m_offset[1], this->m_power[1], this->m_slope[1]);
+  output[2] = mfac * inputColor[2] +
+              fac * colorbalance_cdl(
+                        inputColor[2], this->m_offset[2], this->m_power[2], this->m_slope[2]);
+  output[3] = inputColor[3];
+}
+
+void ColorBalanceASCCDLOperation::deinitExecution()
+{
+  this->m_inputValueOperation = nullptr;
+  this->m_inputColorOperation = nullptr;
+}