1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
|
/* SPDX-License-Identifier: GPL-2.0-or-later
* Copyright 2011 Blender Foundation. */
#include "COM_MovieDistortionOperation.h"
#include "DNA_defaults.h"
#include "BKE_movieclip.h"
namespace blender::compositor {
MovieDistortionOperation::MovieDistortionOperation(bool distortion)
{
this->add_input_socket(DataType::Color);
this->add_output_socket(DataType::Color);
this->set_canvas_input_index(0);
input_operation_ = nullptr;
movie_clip_ = nullptr;
apply_ = distortion;
}
void MovieDistortionOperation::init_data()
{
if (movie_clip_) {
MovieTracking *tracking = &movie_clip_->tracking;
MovieClipUser clip_user = *DNA_struct_default_get(MovieClipUser);
int calibration_width, calibration_height;
BKE_movieclip_user_set_frame(&clip_user, framenumber_);
BKE_movieclip_get_size(movie_clip_, &clip_user, &calibration_width, &calibration_height);
float delta[2];
rcti full_frame;
full_frame.xmin = full_frame.ymin = 0;
full_frame.xmax = this->get_width();
full_frame.ymax = this->get_height();
BKE_tracking_max_distortion_delta_across_bound(
tracking, this->get_width(), this->get_height(), &full_frame, !apply_, delta);
/* 5 is just in case we didn't hit real max of distortion in
* BKE_tracking_max_undistortion_delta_across_bound
*/
margin_[0] = delta[0] + 5;
margin_[1] = delta[1] + 5;
calibration_width_ = calibration_width;
calibration_height_ = calibration_height;
pixel_aspect_ = tracking->camera.pixel_aspect;
}
else {
margin_[0] = margin_[1] = 0;
}
}
void MovieDistortionOperation::init_execution()
{
input_operation_ = this->get_input_socket_reader(0);
if (movie_clip_) {
MovieTracking *tracking = &movie_clip_->tracking;
distortion_ = BKE_tracking_distortion_new(tracking, calibration_width_, calibration_height_);
}
else {
distortion_ = nullptr;
}
}
void MovieDistortionOperation::deinit_execution()
{
input_operation_ = nullptr;
movie_clip_ = nullptr;
if (distortion_ != nullptr) {
BKE_tracking_distortion_free(distortion_);
}
}
void MovieDistortionOperation::execute_pixel_sampled(float output[4],
float x,
float y,
PixelSampler /*sampler*/)
{
const int width = this->get_width();
const int height = this->get_height();
if (distortion_ == nullptr || width == 0 || height == 0) {
/* When there is no precomputed distortion pass-through the coordinate as-is to the input
* samples.
* If the frame size is zero do the same and bypass any math. In theory it is probably more
* correct to zero the output but it is easier and safe to let the input to do so than to deal
* with possible different number of channels here. */
input_operation_->read_sampled(output, x, y, PixelSampler::Bilinear);
return;
}
/* float overscan = 0.0f; */
const float w = float(width) /* / (1 + overscan) */;
const float h = float(height) /* / (1 + overscan) */;
const float pixel_aspect = pixel_aspect_;
const float aspx = w / float(calibration_width_);
const float aspy = h / float(calibration_height_);
float in[2];
float out[2];
in[0] = (x /* - 0.5 * overscan * w */) / aspx;
in[1] = (y /* - 0.5 * overscan * h */) / aspy / pixel_aspect;
if (apply_) {
BKE_tracking_distortion_undistort_v2(distortion_, in, out);
}
else {
BKE_tracking_distortion_distort_v2(distortion_, in, out);
}
float u = out[0] * aspx /* + 0.5 * overscan * w */,
v = (out[1] * aspy /* + 0.5 * overscan * h */) * pixel_aspect;
input_operation_->read_sampled(output, u, v, PixelSampler::Bilinear);
}
bool MovieDistortionOperation::determine_depending_area_of_interest(
rcti *input, ReadBufferOperation *read_operation, rcti *output)
{
rcti new_input;
new_input.xmin = input->xmin - margin_[0];
new_input.ymin = input->ymin - margin_[1];
new_input.xmax = input->xmax + margin_[0];
new_input.ymax = input->ymax + margin_[1];
return NodeOperation::determine_depending_area_of_interest(&new_input, read_operation, output);
}
void MovieDistortionOperation::get_area_of_interest(const int input_idx,
const rcti &output_area,
rcti &r_input_area)
{
BLI_assert(input_idx == 0);
UNUSED_VARS_NDEBUG(input_idx);
r_input_area.xmin = output_area.xmin - margin_[0];
r_input_area.ymin = output_area.ymin - margin_[1];
r_input_area.xmax = output_area.xmax + margin_[0];
r_input_area.ymax = output_area.ymax + margin_[1];
}
void MovieDistortionOperation::update_memory_buffer_partial(MemoryBuffer *output,
const rcti &area,
Span<MemoryBuffer *> inputs)
{
const MemoryBuffer *input_img = inputs[0];
if (distortion_ == nullptr) {
output->copy_from(input_img, area);
return;
}
/* `float overscan = 0.0f;` */
const float pixel_aspect = pixel_aspect_;
const float w = float(this->get_width()) /* `/ (1 + overscan)` */;
const float h = float(this->get_height()) /* `/ (1 + overscan)` */;
const float aspx = w / float(calibration_width_);
const float aspy = h / float(calibration_height_);
float xy[2];
float distorted_xy[2];
for (BuffersIterator<float> it = output->iterate_with({}, area); !it.is_end(); ++it) {
xy[0] = (it.x /* `- 0.5 * overscan * w` */) / aspx;
xy[1] = (it.y /* `- 0.5 * overscan * h` */) / aspy / pixel_aspect;
if (apply_) {
BKE_tracking_distortion_undistort_v2(distortion_, xy, distorted_xy);
}
else {
BKE_tracking_distortion_distort_v2(distortion_, xy, distorted_xy);
}
const float u = distorted_xy[0] * aspx /* `+ 0.5 * overscan * w` */;
const float v = (distorted_xy[1] * aspy /* `+ 0.5 * overscan * h` */) * pixel_aspect;
input_img->read_elem_bilinear(u, v, it.out);
}
}
} // namespace blender::compositor
|
