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/*
* 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_MovieClipAttributeOperation.h"
#include "BKE_movieclip.h"
#include "BKE_tracking.h"
namespace blender::compositor {
MovieClipAttributeOperation::MovieClipAttributeOperation()
{
this->add_output_socket(DataType::Value);
framenumber_ = 0;
attribute_ = MCA_X;
invert_ = false;
needs_canvas_to_get_constant_ = true;
is_value_calculated_ = false;
stabilization_resolution_socket_ = nullptr;
}
void MovieClipAttributeOperation::init_execution()
{
if (!is_value_calculated_) {
calc_value();
}
}
void MovieClipAttributeOperation::calc_value()
{
BLI_assert(this->get_flags().is_canvas_set);
is_value_calculated_ = true;
if (clip_ == nullptr) {
return;
}
float loc[2], scale, angle;
loc[0] = 0.0f;
loc[1] = 0.0f;
scale = 1.0f;
angle = 0.0f;
int clip_framenr = BKE_movieclip_remap_scene_to_clip_frame(clip_, framenumber_);
NodeOperation &stabilization_operation =
stabilization_resolution_socket_ ?
stabilization_resolution_socket_->get_link()->get_operation() :
*this;
BKE_tracking_stabilization_data_get(clip_,
clip_framenr,
stabilization_operation.get_width(),
stabilization_operation.get_height(),
loc,
&scale,
&angle);
switch (attribute_) {
case MCA_SCALE:
value_ = scale;
break;
case MCA_ANGLE:
value_ = angle;
break;
case MCA_X:
value_ = loc[0];
break;
case MCA_Y:
value_ = loc[1];
break;
}
if (invert_) {
if (attribute_ != MCA_SCALE) {
value_ = -value_;
}
else {
value_ = 1.0f / value_;
}
}
}
void MovieClipAttributeOperation::execute_pixel_sampled(float output[4],
float /*x*/,
float /*y*/,
PixelSampler /*sampler*/)
{
output[0] = value_;
}
void MovieClipAttributeOperation::determine_canvas(const rcti &preferred_area, rcti &r_area)
{
r_area = preferred_area;
}
const float *MovieClipAttributeOperation::get_constant_elem()
{
if (!is_value_calculated_) {
calc_value();
}
return &value_;
}
} // namespace blender::compositor
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