1 files changed, 163 insertions, 0 deletions

diff --git a/source/blender/compositor/operations/COM_TonemapOperation.cpp b/source/blender/compositor/operations/COM_TonemapOperation.cpp
new file mode 100644
index 00000000000..84e893d0b2e
--- /dev/null
+++ b/source/blender/compositor/operations/COM_TonemapOperation.cpp
@@ -0,0 +1,163 @@
+/*
+ * 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: 
+ *		Jeroen Bakker 
+ *		Monique Dewanchand
+ */
+
+#include "COM_TonemapOperation.h"
+#include "BLI_math.h"
+#include "BLI_utildefines.h"
+
+
+
+TonemapOperation::TonemapOperation(): NodeOperation() {
+	this->addInputSocket(COM_DT_COLOR, COM_SC_NO_RESIZE);
+	this->addOutputSocket(COM_DT_COLOR);
+	this->imageReader = NULL;
+	this->data = NULL;
+	this->cachedInstance = NULL;
+	this->setComplex(true);
+}
+void TonemapOperation::initExecution() {
+	this->imageReader = this->getInputSocketReader(0);
+	NodeOperation::initMutex();
+}
+
+void TonemapOperation::executePixel(float* color, int x, int y, MemoryBuffer *inputBuffers[], void * data) {
+	AvgLogLum * avg = (AvgLogLum*)data;
+
+	float output[4];
+	this->imageReader->read(output, x, y, inputBuffers, NULL);
+	output[0] *= avg->al;
+	output[1] *= avg->al;
+	output[2] *= avg->al;
+	float dr = output[0] + this->data->offset;
+	float dg = output[1] + this->data->offset;
+	float db = output[2] + this->data->offset;
+	output[0] /= ((dr == 0.f) ? 1.f : dr);
+	output[1] /= ((dg == 0.f) ? 1.f : dg);
+	output[2] /= ((db == 0.f) ? 1.f : db);
+	const float igm = avg->igm;
+	if (igm != 0.f) {
+		output[0] = pow((double)MAX2(output[0], 0.), (double)igm);
+		output[1] = pow((double)MAX2(output[1], 0.), (double)igm);
+		output[2] = pow((double)MAX2(output[2], 0.), (double)igm);
+	}
+
+	color[0] = output[0];
+	color[1] = output[1];
+	color[2] = output[2];
+	color[3] = output[3];
+}
+void PhotoreceptorTonemapOperation::executePixel(float* color, int x, int y, MemoryBuffer *inputBuffers[], void * data) {
+	AvgLogLum * avg = (AvgLogLum*)data;
+	NodeTonemap *ntm = this->data;
+
+	const float f = exp((double)-this->data->f);
+	const float m = (ntm->m > 0.f) ? ntm->m : (0.3f + 0.7f*pow((double)avg->auto_key, 1.4));
+	const float ic = 1.f - ntm->c, ia = 1.f - ntm->a;
+
+	float output[4];
+	this->imageReader->read(output, x, y, inputBuffers, NULL);
+
+	const float L = 0.212671f*output[0] + 0.71516f*output[1] + 0.072169f*output[2];
+	float I_l = output[0] + ic*(L - output[0]);
+	float I_g = avg->cav[0] + ic*(avg->lav - avg->cav[0]);
+	float I_a = I_l + ia*(I_g - I_l);
+	output[0] /= (output[0] + pow((double)f*I_a, (double)m));
+	I_l = output[1] + ic*(L - output[1]);
+	I_g = avg->cav[1] + ic*(avg->lav - avg->cav[1]);
+	I_a = I_l + ia*(I_g - I_l);
+	output[1] /= (output[1] + pow((double)f*I_a,(double)m));
+	I_l = output[2] + ic*(L - output[2]);
+	I_g = avg->cav[2] + ic*(avg->lav - avg->cav[2]);
+	I_a = I_l + ia*(I_g - I_l);
+	output[2] /= (output[2] + pow((double)f*I_a, (double)m));
+
+	color[0] = output[0];
+	color[1] = output[1];
+	color[2] = output[2];
+	color[3] = output[3];
+}
+
+void TonemapOperation::deinitExecution() {
+	this->imageReader = NULL;
+	if (this->cachedInstance) {
+		delete cachedInstance;
+	}
+	NodeOperation::deinitMutex();
+}
+
+bool TonemapOperation::determineDependingAreaOfInterest(rcti *input, ReadBufferOperation *readOperation, rcti *output) {
+	rcti imageInput;
+
+	NodeOperation* operation = getInputOperation(0);
+	imageInput.xmax = operation->getWidth();
+	imageInput.xmin = 0;
+	imageInput.ymax = operation->getHeight();
+	imageInput.ymin = 0;
+	if (operation->determineDependingAreaOfInterest(&imageInput, readOperation, output) ) {
+		return true;
+	}
+	return false;
+}
+
+void* TonemapOperation::initializeTileData(rcti *rect, MemoryBuffer **memoryBuffers) {
+	BLI_mutex_lock(getMutex());
+	if (this->cachedInstance == NULL) {
+		MemoryBuffer* tile = (MemoryBuffer*)imageReader->initializeTileData(rect, memoryBuffers);
+		AvgLogLum *data = new AvgLogLum();
+
+		float * buffer = tile->getBuffer();
+
+		float lsum = 0;
+		int p = tile->getWidth() * tile->getHeight();
+		float* bc = buffer;
+		float avl, maxl = -1e10f, minl = 1e10f;
+		const float sc = 1.f/(p);
+		float Lav = 0.f;
+		float cav[4] = {0.0f,0.0f,0.0f,0.0f};
+		while (p--) {
+			float L = 0.212671f*bc[0] + 0.71516f*bc[1] + 0.072169f*bc[2];
+			Lav += L;
+			cav[0] += bc[0];
+			cav[1] += bc[1];
+			cav[2] += bc[2];
+			lsum += (float)log((double)MAX2(L, 0.0) + 1e-5);
+			maxl = (L > maxl) ? L : maxl;
+			minl = (L < minl) ? L : minl;
+			bc+=4;
+		}
+		data->lav = Lav * sc;
+		data->cav[0] = cav[0]*sc;
+		data->cav[1] = cav[1]*sc;
+		data->cav[2] = cav[2]*sc;
+		maxl = log((double)maxl + 1e-5); minl = log((double)minl + 1e-5f); avl = lsum*sc;
+		data->auto_key = (maxl > minl) ? ((maxl - avl) / (maxl - minl)) : 1.f;
+		float al = exp((double)avl);
+		data->al = (al == 0.f) ? 0.f : (this->data->key / al);
+		data->igm = (this->data->gamma==0.f) ? 1 : (1.f / this->data->gamma);
+		this->cachedInstance = data;
+	}
+	BLI_mutex_unlock(getMutex());
+	return this->cachedInstance;
+}
+
+void TonemapOperation::deinitializeTileData(rcti *rect, MemoryBuffer **memoryBuffers, void *data) {
+}