/*
* CINELERRA
* Copyright (C) 2008 Adam Williams <broadcast at earthling dot net>
- *
+ *
* 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- *
+ *
*/
-#ifndef CLIP_H
-#define CLIP_H
+#ifndef __CLIP_H__
+#define __CLIP_H__
// Math macros
#undef SQR
#define TO_RAD(x) ((x) * 2 * M_PI / 360)
#define TO_DEG(x) ((x) * 360 / 2 / M_PI)
+static inline int bmin(int a, int b) { return a < b ? a : b; }
+static inline float bmin(float a, float b) { return a < b ? a : b; }
+static inline double bmin(double a, double b) { return a < b ? a : b; }
+static inline int bmax(int a, int b) { return a > b ? a : b; }
+static inline float bmax(float a, float b) { return a > b ? a : b; }
+static inline double bmax(double a, double b) { return a > b ? a : b; }
+
+static inline int bclip(int &iv, int imn, int imx) {
+ return iv < imn ? imn : iv > imx ? imx : iv;
+}
+static inline float bclip(float &fv, float fmn, float fmx) {
+ return fv < fmn ? fmn : fv > fmx ? fmx : fv;
+}
+static inline double bclip(double &dv, double dmn, double dmx) {
+ return dv < dmn ? dmn : dv > dmx ? dmx : dv;
+}
+static inline void bclamp(int &iv, int imn, int imx) {
+ if( iv < imn ) iv = imn; else if( iv > imx ) iv = imx;
+}
+static inline void bclamp(float &fv, float fmn, float fmx) {
+ if( fv < fmn ) fv = fmn; else if( fv > fmx ) fv = fmx;
+}
+static inline void bclamp(double &dv, double dmn, double dmx) {
+ if( dv < dmn ) dv = dmn; else if( dv > dmx ) dv = dmx;
+}
+static inline void bc_rgb2yuv(float r, float g, float b, float &y, float &u, float &v)
+{ //bt601, jpeg, unclipped
+ y = 0.29900*r + 0.58700*g + 0.11400*b;
+ u = -0.16874*r - 0.33126*g + 0.50000*b + 0.5;
+ v = 0.50000*r - 0.41869*g - 0.08131*b + 0.5;
+}
+static inline void bc_rgb2yuv(int r, int g, int b, int &y, int &u, int &v, int max=255)
+{ // clipped
+ float mx = max, fr = r/mx, fg = g/mx, fb = b/mx, fy, fu, fv;
+ bc_rgb2yuv(fr,fg,fb, fy,fu,fv);
+ y = (int)(fy * mx + 0.5); bclamp(y,0,max);
+ u = (int)(fu * mx + 0.5); bclamp(u,0,max);
+ v = (int)(fv * mx + 0.5); bclamp(v,0,max);
+}
+static inline void bc_yuv2rgb(float y, float u, float v, float &r, float &g, float &b)
+{ //bt601, jpeg, unclipped
+ r = y + 1.40200*v;
+ g = y - 0.34414*u - 0.71414*v;
+ b = y + 1.77200*u;
+}
+static inline void bc_yuv2rgb(int y, int u, int v, int &r, int &g, int &b, int max=255)
+{ // clipped
+ int ofs = (max + 1) / 2;
+ float mx = max, fy = y/mx, fu = (u-ofs)/mx, fv = (v-ofs)/mx, fr, fg, fb;
+ bc_yuv2rgb(fy,fu,fv, fr,fg,fb);
+ r = (int)(fr * mx + 0.5); bclamp(r,0,max);
+ g = (int)(fg * mx + 0.5); bclamp(g,0,max);
+ b = (int)(fb * mx + 0.5); bclamp(b,0,max);
+}
+
#endif