despeckle composite node

2 files changed, 188 insertions, 0 deletions

diff --git a/source/blender/compositor/operations/COM_DespeckleOperation.cpp b/source/blender/compositor/operations/COM_DespeckleOperation.cpp
new file mode 100644
index 00000000000..6e2f9ab4351
--- /dev/null
+++ b/source/blender/compositor/operations/COM_DespeckleOperation.cpp
@@ -0,0 +1,139 @@
+/*
+ * Copyright 2011, Blender Foundation.
+ *
+ * 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.
+ *
+ * Contributor: Campbell Barton
+ */
+
+#include "MEM_guardedalloc.h"
+
+#include "COM_DespeckleOperation.h"
+
+#include "BLI_utildefines.h"
+
+DespeckleOperation::DespeckleOperation() : NodeOperation()
+{
+	this->addInputSocket(COM_DT_COLOR);
+	this->addInputSocket(COM_DT_VALUE);
+	this->addOutputSocket(COM_DT_COLOR);
+	this->setResolutionInputSocketIndex(0);
+	this->m_inputOperation = NULL;
+	this->setComplex(true);
+}
+void DespeckleOperation::initExecution()
+{
+	this->m_inputOperation = this->getInputSocketReader(0);
+	this->m_inputValueOperation = this->getInputSocketReader(1);
+}
+
+void DespeckleOperation::deinitExecution()
+{
+	this->m_inputOperation = NULL;
+	this->m_inputValueOperation = NULL;
+}
+
+BLI_INLINE int color_diff(const float a[3], const float b[3], const float threshold)
+{
+	return ((fabsf(a[0] - b[0]) > threshold) ||
+	        (fabsf(a[1] - b[1]) > threshold) ||
+	        (fabsf(a[2] - b[2]) > threshold));
+}
+
+void DespeckleOperation::executePixel(float output[4], int x, int y, void *data)
+{
+	float w = 0.0f;
+	float color_org[4];
+	float color_mid[4];
+	float color_mid_ok[4];
+	float in1[4];
+	int x1 = x - 1;
+	int x2 = x;
+	int x3 = x + 1;
+	int y1 = y - 1;
+	int y2 = y;
+	int y3 = y + 1;
+	CLAMP(x1, 0, getWidth() - 1);
+	CLAMP(x2, 0, getWidth() - 1);
+	CLAMP(x3, 0, getWidth() - 1);
+	CLAMP(y1, 0, getHeight() - 1);
+	CLAMP(y2, 0, getHeight() - 1);
+	CLAMP(y3, 0, getHeight() - 1);
+	float value[4];
+	this->m_inputValueOperation->read(value, x2, y2, NULL);
+	//const float mval = 1.0f - value[0];
+
+
+	this->m_inputOperation->read(color_org, x2, y2, NULL);
+
+#define TOT_DIV_ONE 1.0
+#define TOT_DIV_CNR M_SQRT1_2
+
+#define	WTOT (TOT_DIV_ONE * 4 + TOT_DIV_CNR * 4)
+
+#define COLOR_ADD(fac)  \
+{ \
+	madd_v4_v4fl(color_mid, in1, fac); \
+	if (color_diff(in1, color_org, this->m_threshold)) { \
+		w += fac; \
+		madd_v4_v4fl(color_mid_ok, in1, fac); \
+	} \
+}
+
+	zero_v4(color_mid);
+	zero_v4(color_mid_ok);
+
+	this->m_inputOperation->read(in1, x1, y1, NULL); COLOR_ADD(TOT_DIV_CNR)
+	this->m_inputOperation->read(in1, x2, y1, NULL); COLOR_ADD(TOT_DIV_ONE)
+	this->m_inputOperation->read(in1, x3, y1, NULL); COLOR_ADD(TOT_DIV_CNR)
+	this->m_inputOperation->read(in1, x1, y2, NULL); COLOR_ADD(TOT_DIV_ONE)
+
+#if 0
+	this->m_inputOperation->read(in2, x2, y2, NULL);
+	madd_v4_v4fl(color_mid, in2, this->m_filter[4]);
+#endif
+
+	this->m_inputOperation->read(in1, x3, y2, NULL); COLOR_ADD(TOT_DIV_ONE)
+	this->m_inputOperation->read(in1, x1, y3, NULL); COLOR_ADD(TOT_DIV_CNR)
+	this->m_inputOperation->read(in1, x2, y3, NULL); COLOR_ADD(TOT_DIV_ONE)
+	this->m_inputOperation->read(in1, x3, y3, NULL); COLOR_ADD(TOT_DIV_CNR)
+
+	mul_v4_fl(color_mid, 1.0f / (4.0f + (4.0f * M_SQRT1_2)));
+	//mul_v4_fl(color_mid, 1.0f / w);
+
+	if ((w != 0.0f) &&
+	    ((w / WTOT) > (this->m_threshold_neighbour)) &&
+	    color_diff(color_mid, color_org, this->m_threshold))
+	{
+		mul_v4_fl(color_mid_ok, 1.0f / w);
+		interp_v4_v4v4(output, color_org, color_mid_ok, value[0]);
+	}
+	else {
+		copy_v4_v4(output, color_org);
+	}
+}
+
+bool DespeckleOperation::determineDependingAreaOfInterest(rcti *input, ReadBufferOperation *readOperation, rcti *output)
+{
+	rcti newInput;
+	int addx = 1; //(this->m_filterWidth - 1) / 2 + 1;
+	int addy = 1; //(this->m_filterHeight - 1) / 2 + 1;
+	newInput.xmax = input->xmax + addx;
+	newInput.xmin = input->xmin - addx;
+	newInput.ymax = input->ymax + addy;
+	newInput.ymin = input->ymin - addy;
+
+	return NodeOperation::determineDependingAreaOfInterest(&newInput, readOperation, output);
+}
diff --git a/source/blender/compositor/operations/COM_DespeckleOperation.h b/source/blender/compositor/operations/COM_DespeckleOperation.h
new file mode 100644
index 00000000000..5b79d7cb7e0
--- /dev/null
+++ b/source/blender/compositor/operations/COM_DespeckleOperation.h
@@ -0,0 +1,49 @@
+/*
+ * Copyright 2011, Blender Foundation.
+ *
+ * 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.
+ *
+ * Contributor: Campbell Barton
+ */
+
+#ifndef _COM_DespeckleOperation_h
+#define _COM_DespeckleOperation_h
+#include "COM_NodeOperation.h"
+
+class DespeckleOperation : public NodeOperation {
+private:
+	float m_threshold;
+	float m_threshold_neighbour;
+
+	int m_filterWidth;
+	int m_filterHeight;
+
+protected:
+	SocketReader *m_inputOperation;
+	SocketReader *m_inputValueOperation;
+
+public:
+	DespeckleOperation();
+	bool determineDependingAreaOfInterest(rcti *input, ReadBufferOperation *readOperation, rcti *output);
+	void executePixel(float output[4], int x, int y, void *data);
+
+	void setThreshold(float threshold) { this->m_threshold = threshold; }
+	void setThresholdNeighbour(float threshold) { this->m_threshold_neighbour = threshold; }
+
+	void initExecution();
+	void deinitExecution();
+};
+
+#endif