4 * Copyright (C) 2008-2014 Adam Williams <broadcast at earthling dot net>
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
27 #include "loadbalance.h"
30 // Affine transform library
32 #define AFFINE_OVERSAMPLE 2
39 void translate(double x, double y);
40 void scale(double x, double y);
41 // Result is put in dst
42 void multiply(AffineMatrix *dst);
43 void copy_from(AffineMatrix *src);
44 void invert(AffineMatrix *dst);
45 void transform_point(float x, float y, float *newx, float *newy);
51 class AffinePackage : public LoadPackage
58 class AffineUnit : public LoadClient
61 AffineUnit(AffineEngine *server);
62 void process_package(LoadPackage *package);
63 void calculate_matrix(
76 AffineMatrix *result);
77 float transform_cubic(float dx,
85 class AffineEngine : public LoadServer
88 AffineEngine(int total_clients,
91 // Range of coords is 0 to 100 for coordinates in the image.
92 // The coordinate locations are clockwise around the image.
93 void process(VFrame *output,
106 // Do rotation with the affine/perspective transform.
107 // This removes some of the extremely faint artifacts in the trig rotation.
108 void rotate(VFrame *output,
111 void set_matrix(AffineMatrix *matrix);
112 // Set the viewport to transform. The transform is based on the input viewport.
113 // The output viewport clips the transformed output.
114 void set_in_viewport(int x, int y, int w, int h);
115 // Only used by motion tracker. Not used in OpenGL.
116 void set_out_viewport(int x, int y, int w, int h);
117 // For rotation, set the pivot point. Also affects output in OpenGL.
118 // The default is in the middle of the viewport.
119 void set_in_pivot(int x, int y);
120 // Set the pivot point in the output. Only used by motion tracker.
121 void set_out_pivot(int x, int y);
124 void unset_viewport();
125 // To use OpenGL for the processing, set to 1
126 void set_opengl(int value);
127 void init_packages();
128 LoadClient* new_client();
129 LoadPackage* new_package();
132 VFrame *input, *output, *temp;
140 // multiply directly by a matrix.
146 // Transformation coordinates
147 float x1, y1, x2, y2, x3, y3, x4, y4;
148 // Viewport coordinates
149 int in_x, in_y, in_w, in_h;
150 int out_x, out_y, out_w, out_h;
152 int in_pivot_x, in_pivot_y;
153 int out_pivot_x, out_pivot_y;
156 int user_in_viewport;
157 int user_out_viewport;