titler rework, some code cleanup and fixes

[goodguy/history.git] / cinelerra-5.1 / guicast / clip.h

diff --git a/cinelerra-5.1/guicast/clip.h b/cinelerra-5.1/guicast/clip.h
index 44a5f45052681d9cf01e5e97c4cb77b6834d6350..4246f2ecdb0c43d408d94b76c84c065f78a0c90e 100644 (file)
--- a/cinelerra-5.1/guicast/clip.h
+++ b/cinelerra-5.1/guicast/clip.h
@@ -19,8 +19,8 @@
  *
  */
 
-#ifndef CLIP_H
-#define CLIP_H
+#ifndef __CLIP_H__
+#define __CLIP_H__
 
 // Math macros
 #undef SQR
@@ -43,4 +43,38 @@
 #define TO_RAD(x) ((x) * 2 * M_PI / 360)
 #define TO_DEG(x) ((x) * 360 / 2 / M_PI)
 
+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(int r, int g, int b, int &y, int &u, int &v, int max=255)
+{ //bt601, jpeg, unclipped
+       double mx = max, rr = r/mx, gg = g/mx, bb = b/mx;
+       y = (int)(( 0.29900*rr + 0.58700*gg + 0.11400*bb)       * mx + 0.5);
+       u = (int)((-0.16874*rr - 0.33126*gg + 0.50000*bb + 0.5) * mx + 0.5);
+       v = (int)(( 0.50000*rr - 0.41869*gg - 0.08131*bb + 0.5) * mx + 0.5);
+}
+static inline void bc_yuv2rgb(int y, int u, int v, int &r, int &g, int &b, int max=255)
+{
+       int ofs = (max + 1) / 2;
+       double mx = max, yy = y/mx, uu = (u-ofs)/mx, vv = (v-ofs)/mx;
+       r = (int)((yy + 1.40200*vv)              * mx + 0.5);
+       g = (int)((yy - 0.34414*uu - 0.71414*vv) * mx + 0.5);
+       b = (int)((yy + 1.77200*uu)              * mx + 0.5);
+}
+
 #endif