415 lines
14 KiB
C++
415 lines
14 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 2011, Blender Foundation.
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*/
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#include "COM_ScaleOperation.h"
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#include "COM_ConstantOperation.h"
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namespace blender::compositor {
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#define USE_FORCE_BILINEAR
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/* XXX(campbell): ignore input and use default from old compositor,
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* could become an option like the transform node.
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*
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* NOTE: use bilinear because bicubic makes fuzzy even when not scaling at all (1:1)
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*/
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BaseScaleOperation::BaseScaleOperation()
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{
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#ifdef USE_FORCE_BILINEAR
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m_sampler = (int)PixelSampler::Bilinear;
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#else
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m_sampler = -1;
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#endif
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m_variable_size = false;
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}
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ScaleOperation::ScaleOperation() : ScaleOperation(DataType::Color)
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{
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}
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ScaleOperation::ScaleOperation(DataType data_type) : BaseScaleOperation()
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{
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this->addInputSocket(data_type);
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this->addInputSocket(DataType::Value);
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this->addInputSocket(DataType::Value);
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this->addOutputSocket(data_type);
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this->setResolutionInputSocketIndex(0);
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this->m_inputOperation = nullptr;
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this->m_inputXOperation = nullptr;
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this->m_inputYOperation = nullptr;
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}
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float ScaleOperation::get_constant_scale(const int input_op_idx, const float factor)
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{
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const bool is_constant = getInputOperation(input_op_idx)->get_flags().is_constant_operation;
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if (is_constant) {
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return ((ConstantOperation *)getInputOperation(input_op_idx))->get_constant_elem()[0] * factor;
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}
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return 1.0f;
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}
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float ScaleOperation::get_constant_scale_x()
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{
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return get_constant_scale(1, get_relative_scale_x_factor());
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}
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float ScaleOperation::get_constant_scale_y()
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{
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return get_constant_scale(2, get_relative_scale_y_factor());
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}
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void ScaleOperation::scale_area(
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rcti &rect, float center_x, float center_y, float scale_x, float scale_y)
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{
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rect.xmin = scale_coord(rect.xmin, center_x, scale_x);
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rect.xmax = scale_coord(rect.xmax, center_x, scale_x);
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rect.ymin = scale_coord(rect.ymin, center_y, scale_y);
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rect.ymax = scale_coord(rect.ymax, center_y, scale_y);
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}
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void ScaleOperation::scale_area(rcti &rect, float scale_x, float scale_y)
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{
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scale_area(rect, m_centerX, m_centerY, scale_x, scale_y);
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}
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void ScaleOperation::init_data()
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{
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m_centerX = getWidth() / 2.0f;
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m_centerY = getHeight() / 2.0f;
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}
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void ScaleOperation::initExecution()
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{
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this->m_inputOperation = this->getInputSocketReader(0);
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this->m_inputXOperation = this->getInputSocketReader(1);
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this->m_inputYOperation = this->getInputSocketReader(2);
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}
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void ScaleOperation::deinitExecution()
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{
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this->m_inputOperation = nullptr;
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this->m_inputXOperation = nullptr;
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this->m_inputYOperation = nullptr;
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}
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void ScaleOperation::get_area_of_interest(const int input_idx,
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const rcti &output_area,
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rcti &r_input_area)
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{
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r_input_area = output_area;
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if (input_idx != 0 || m_variable_size) {
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return;
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}
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float scale_x = get_constant_scale_x();
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float scale_y = get_constant_scale_y();
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scale_area(r_input_area, scale_x, scale_y);
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expand_area_for_sampler(r_input_area, (PixelSampler)m_sampler);
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}
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void ScaleOperation::update_memory_buffer_partial(MemoryBuffer *output,
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const rcti &area,
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Span<MemoryBuffer *> inputs)
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{
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const MemoryBuffer *input_img = inputs[0];
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MemoryBuffer *input_x = inputs[1];
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MemoryBuffer *input_y = inputs[2];
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const float scale_x_factor = get_relative_scale_x_factor();
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const float scale_y_factor = get_relative_scale_y_factor();
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BuffersIterator<float> it = output->iterate_with({input_x, input_y}, area);
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for (; !it.is_end(); ++it) {
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const float rel_scale_x = *it.in(0) * scale_x_factor;
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const float rel_scale_y = *it.in(1) * scale_y_factor;
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const float scaled_x = scale_coord(it.x, m_centerX, rel_scale_x);
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const float scaled_y = scale_coord(it.y, m_centerY, rel_scale_y);
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input_img->read_elem_sampled(scaled_x, scaled_y, (PixelSampler)m_sampler, it.out);
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}
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}
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ScaleRelativeOperation::ScaleRelativeOperation() : ScaleOperation()
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{
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}
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ScaleRelativeOperation::ScaleRelativeOperation(DataType data_type) : ScaleOperation(data_type)
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{
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}
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void ScaleRelativeOperation::executePixelSampled(float output[4],
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float x,
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float y,
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PixelSampler sampler)
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{
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PixelSampler effective_sampler = getEffectiveSampler(sampler);
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float scaleX[4];
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float scaleY[4];
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this->m_inputXOperation->readSampled(scaleX, x, y, effective_sampler);
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this->m_inputYOperation->readSampled(scaleY, x, y, effective_sampler);
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const float scx = scaleX[0];
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const float scy = scaleY[0];
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float nx = this->m_centerX + (x - this->m_centerX) / scx;
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float ny = this->m_centerY + (y - this->m_centerY) / scy;
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this->m_inputOperation->readSampled(output, nx, ny, effective_sampler);
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}
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bool ScaleRelativeOperation::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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if (!m_variable_size) {
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float scaleX[4];
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float scaleY[4];
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this->m_inputXOperation->readSampled(scaleX, 0, 0, PixelSampler::Nearest);
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this->m_inputYOperation->readSampled(scaleY, 0, 0, PixelSampler::Nearest);
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const float scx = scaleX[0];
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const float scy = scaleY[0];
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newInput.xmax = this->m_centerX + (input->xmax - this->m_centerX) / scx + 1;
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newInput.xmin = this->m_centerX + (input->xmin - this->m_centerX) / scx - 1;
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newInput.ymax = this->m_centerY + (input->ymax - this->m_centerY) / scy + 1;
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newInput.ymin = this->m_centerY + (input->ymin - this->m_centerY) / scy - 1;
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}
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else {
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newInput.xmax = this->getWidth();
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newInput.xmin = 0;
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newInput.ymax = this->getHeight();
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newInput.ymin = 0;
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}
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return BaseScaleOperation::determineDependingAreaOfInterest(&newInput, readOperation, output);
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}
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void ScaleAbsoluteOperation::executePixelSampled(float output[4],
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float x,
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float y,
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PixelSampler sampler)
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{
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PixelSampler effective_sampler = getEffectiveSampler(sampler);
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float scaleX[4];
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float scaleY[4];
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this->m_inputXOperation->readSampled(scaleX, x, y, effective_sampler);
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this->m_inputYOperation->readSampled(scaleY, x, y, effective_sampler);
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const float scx = scaleX[0]; // target absolute scale
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const float scy = scaleY[0]; // target absolute scale
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const float width = this->getWidth();
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const float height = this->getHeight();
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// div
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float relativeXScale = scx / width;
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float relativeYScale = scy / height;
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float nx = this->m_centerX + (x - this->m_centerX) / relativeXScale;
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float ny = this->m_centerY + (y - this->m_centerY) / relativeYScale;
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this->m_inputOperation->readSampled(output, nx, ny, effective_sampler);
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}
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bool ScaleAbsoluteOperation::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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if (!m_variable_size) {
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float scaleX[4];
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float scaleY[4];
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this->m_inputXOperation->readSampled(scaleX, 0, 0, PixelSampler::Nearest);
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this->m_inputYOperation->readSampled(scaleY, 0, 0, PixelSampler::Nearest);
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const float scx = scaleX[0];
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const float scy = scaleY[0];
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const float width = this->getWidth();
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const float height = this->getHeight();
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// div
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float relateveXScale = scx / width;
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float relateveYScale = scy / height;
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newInput.xmax = this->m_centerX + (input->xmax - this->m_centerX) / relateveXScale;
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newInput.xmin = this->m_centerX + (input->xmin - this->m_centerX) / relateveXScale;
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newInput.ymax = this->m_centerY + (input->ymax - this->m_centerY) / relateveYScale;
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newInput.ymin = this->m_centerY + (input->ymin - this->m_centerY) / relateveYScale;
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}
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else {
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newInput.xmax = this->getWidth();
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newInput.xmin = 0;
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newInput.ymax = this->getHeight();
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newInput.ymin = 0;
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}
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return ScaleOperation::determineDependingAreaOfInterest(&newInput, readOperation, output);
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}
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/* Absolute fixed size. */
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ScaleFixedSizeOperation::ScaleFixedSizeOperation() : BaseScaleOperation()
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{
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this->addInputSocket(DataType::Color, ResizeMode::None);
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this->addOutputSocket(DataType::Color);
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this->setResolutionInputSocketIndex(0);
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this->m_inputOperation = nullptr;
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this->m_is_offset = false;
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}
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void ScaleFixedSizeOperation::init_data()
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{
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const NodeOperation *input_op = getInputOperation(0);
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this->m_relX = input_op->getWidth() / (float)this->m_newWidth;
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this->m_relY = input_op->getHeight() / (float)this->m_newHeight;
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/* *** all the options below are for a fairly special case - camera framing *** */
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if (this->m_offsetX != 0.0f || this->m_offsetY != 0.0f) {
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this->m_is_offset = true;
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if (this->m_newWidth > this->m_newHeight) {
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this->m_offsetX *= this->m_newWidth;
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this->m_offsetY *= this->m_newWidth;
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}
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else {
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this->m_offsetX *= this->m_newHeight;
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this->m_offsetY *= this->m_newHeight;
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}
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}
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if (this->m_is_aspect) {
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/* apply aspect from clip */
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const float w_src = input_op->getWidth();
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const float h_src = input_op->getHeight();
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/* destination aspect is already applied from the camera frame */
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const float w_dst = this->m_newWidth;
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const float h_dst = this->m_newHeight;
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const float asp_src = w_src / h_src;
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const float asp_dst = w_dst / h_dst;
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if (fabsf(asp_src - asp_dst) >= FLT_EPSILON) {
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if ((asp_src > asp_dst) == (this->m_is_crop == true)) {
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/* fit X */
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const float div = asp_src / asp_dst;
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this->m_relX /= div;
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this->m_offsetX += ((w_src - (w_src * div)) / (w_src / w_dst)) / 2.0f;
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}
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else {
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/* fit Y */
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const float div = asp_dst / asp_src;
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this->m_relY /= div;
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this->m_offsetY += ((h_src - (h_src * div)) / (h_src / h_dst)) / 2.0f;
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}
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this->m_is_offset = true;
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}
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}
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/* *** end framing options *** */
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}
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void ScaleFixedSizeOperation::initExecution()
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{
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this->m_inputOperation = this->getInputSocketReader(0);
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}
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void ScaleFixedSizeOperation::deinitExecution()
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{
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this->m_inputOperation = nullptr;
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}
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void ScaleFixedSizeOperation::executePixelSampled(float output[4],
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float x,
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float y,
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PixelSampler sampler)
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{
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PixelSampler effective_sampler = getEffectiveSampler(sampler);
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if (this->m_is_offset) {
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float nx = ((x - this->m_offsetX) * this->m_relX);
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float ny = ((y - this->m_offsetY) * this->m_relY);
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this->m_inputOperation->readSampled(output, nx, ny, effective_sampler);
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}
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else {
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this->m_inputOperation->readSampled(
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output, x * this->m_relX, y * this->m_relY, effective_sampler);
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}
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}
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bool ScaleFixedSizeOperation::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.xmax = (input->xmax - m_offsetX) * this->m_relX + 1;
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newInput.xmin = (input->xmin - m_offsetX) * this->m_relX;
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newInput.ymax = (input->ymax - m_offsetY) * this->m_relY + 1;
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newInput.ymin = (input->ymin - m_offsetY) * this->m_relY;
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return BaseScaleOperation::determineDependingAreaOfInterest(&newInput, readOperation, output);
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}
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void ScaleFixedSizeOperation::determineResolution(unsigned int resolution[2],
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unsigned int /*preferredResolution*/[2])
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{
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unsigned int nr[2];
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nr[0] = this->m_newWidth;
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nr[1] = this->m_newHeight;
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BaseScaleOperation::determineResolution(resolution, nr);
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resolution[0] = this->m_newWidth;
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resolution[1] = this->m_newHeight;
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}
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void ScaleFixedSizeOperation::get_area_of_interest(const int input_idx,
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const rcti &output_area,
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rcti &r_input_area)
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{
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BLI_assert(input_idx == 0);
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UNUSED_VARS_NDEBUG(input_idx);
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r_input_area.xmax = (output_area.xmax - m_offsetX) * this->m_relX;
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r_input_area.xmin = (output_area.xmin - m_offsetX) * this->m_relX;
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r_input_area.ymax = (output_area.ymax - m_offsetY) * this->m_relY;
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r_input_area.ymin = (output_area.ymin - m_offsetY) * this->m_relY;
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expand_area_for_sampler(r_input_area, (PixelSampler)m_sampler);
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}
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void ScaleFixedSizeOperation::update_memory_buffer_partial(MemoryBuffer *output,
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const rcti &area,
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Span<MemoryBuffer *> inputs)
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{
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const MemoryBuffer *input_img = inputs[0];
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PixelSampler sampler = (PixelSampler)m_sampler;
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BuffersIterator<float> it = output->iterate_with({}, area);
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if (this->m_is_offset) {
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for (; !it.is_end(); ++it) {
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const float nx = (it.x - this->m_offsetX) * this->m_relX;
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const float ny = (it.y - this->m_offsetY) * this->m_relY;
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input_img->read_elem_sampled(nx, ny, sampler, it.out);
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}
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}
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else {
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for (; !it.is_end(); ++it) {
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input_img->read_elem_sampled(it.x * this->m_relX, it.y * this->m_relY, sampler, it.out);
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}
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}
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}
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} // namespace blender::compositor
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