134 lines
3.6 KiB
C++
134 lines
3.6 KiB
C++
/*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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* Copyright 2012, Blender Foundation.
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*/
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#include "COM_KeyingClipOperation.h"
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#include "MEM_guardedalloc.h"
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#include "BLI_listbase.h"
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#include "BLI_math.h"
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namespace blender::compositor {
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KeyingClipOperation::KeyingClipOperation()
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{
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this->addInputSocket(DataType::Value);
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this->addOutputSocket(DataType::Value);
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this->m_kernelRadius = 3;
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this->m_kernelTolerance = 0.1f;
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this->m_clipBlack = 0.0f;
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this->m_clipWhite = 1.0f;
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this->m_isEdgeMatte = false;
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this->flags.complex = true;
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}
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void *KeyingClipOperation::initializeTileData(rcti *rect)
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{
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void *buffer = getInputOperation(0)->initializeTileData(rect);
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return buffer;
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}
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void KeyingClipOperation::executePixel(float output[4], int x, int y, void *data)
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{
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const int delta = this->m_kernelRadius;
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const float tolerance = this->m_kernelTolerance;
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MemoryBuffer *inputBuffer = (MemoryBuffer *)data;
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float *buffer = inputBuffer->getBuffer();
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int bufferWidth = inputBuffer->getWidth();
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int bufferHeight = inputBuffer->getHeight();
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float value = buffer[(y * bufferWidth + x)];
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bool ok = false;
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int start_x = max_ff(0, x - delta + 1), start_y = max_ff(0, y - delta + 1),
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end_x = min_ff(x + delta - 1, bufferWidth - 1),
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end_y = min_ff(y + delta - 1, bufferHeight - 1);
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int count = 0, totalCount = (end_x - start_x + 1) * (end_y - start_y + 1) - 1;
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int thresholdCount = ceil((float)totalCount * 0.9f);
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if (delta == 0) {
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ok = true;
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}
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for (int cx = start_x; ok == false && cx <= end_x; cx++) {
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for (int cy = start_y; ok == false && cy <= end_y; cy++) {
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if (UNLIKELY(cx == x && cy == y)) {
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continue;
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}
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int bufferIndex = (cy * bufferWidth + cx);
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float currentValue = buffer[bufferIndex];
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if (fabsf(currentValue - value) < tolerance) {
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count++;
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if (count >= thresholdCount) {
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ok = true;
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}
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}
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}
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}
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if (this->m_isEdgeMatte) {
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if (ok) {
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output[0] = 0.0f;
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}
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else {
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output[0] = 1.0f;
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}
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}
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else {
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output[0] = value;
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if (ok) {
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if (output[0] < this->m_clipBlack) {
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output[0] = 0.0f;
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}
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else if (output[0] >= this->m_clipWhite) {
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output[0] = 1.0f;
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}
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else {
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output[0] = (output[0] - this->m_clipBlack) / (this->m_clipWhite - this->m_clipBlack);
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}
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}
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}
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}
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bool KeyingClipOperation::determineDependingAreaOfInterest(rcti *input,
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ReadBufferOperation *readOperation,
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rcti *output)
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{
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rcti newInput;
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newInput.xmin = input->xmin - this->m_kernelRadius;
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newInput.ymin = input->ymin - this->m_kernelRadius;
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newInput.xmax = input->xmax + this->m_kernelRadius;
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newInput.ymax = input->ymax + this->m_kernelRadius;
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return NodeOperation::determineDependingAreaOfInterest(&newInput, readOperation, output);
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}
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} // namespace blender::compositor
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