--- /dev/null
+
+/*
+ * 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
+ *
+ */
+
+#include "bccolors.h"
+
+#include <stdio.h>
+
+HSV::HSV()
+{
+}
+
+
+HSV::~HSV()
+{
+}
+
+YUV YUV::yuv;
+
+int HSV::rgb_to_hsv(float r, float g, float b, float &h, float &s, float &v)
+{
+ float min = ((r < g) ? r : g) < b ? ((r < g) ? r : g) : b;
+ float max = ((r > g) ? r : g) > b ? ((r > g) ? r : g) : b;
+ float delta = max - min;
+ if( max != 0 && delta != 0 ) {
+ v = max;
+ s = delta / max;
+ h = r == max ? (g - b) / delta : // between yellow & magenta
+ g == max ? 2 + (b - r) / delta : // between cyan & yellow
+ 4 + (r - g) / delta; // between magenta & cyan
+ if( (h*=60) < 0 ) h += 360; // degrees
+ }
+ else { // r = g = b
+ h = 0; s = 0; v = max;
+ }
+
+ return 0;
+}
+
+int HSV::hsv_to_rgb(float &r, float &g, float &b, float h, float s, float v)
+{
+ if( s == 0 ) { // achromatic (grey)
+ r = g = b = v;
+ return 0;
+ }
+
+ h /= 60; // sector 0 to 5
+ int i = (int)h;
+ float f = h - i; // factorial part of h
+ float p = v * (1 - s);
+ float q = v * (1 - s * f);
+ float t = v * (1 - s * (1 - f));
+
+ switch(i) {
+ case 0: r = v; g = t; b = p; break;
+ case 1: r = q; g = v; b = p; break;
+ case 2: r = p; g = v; b = t; break;
+ case 3: r = p; g = q; b = v; break;
+ case 4: r = t; g = p; b = v; break;
+ default: r = v; g = p; b = q; break;
+ }
+ return 0;
+}
+
+int HSV::yuv_to_hsv(int y, int u, int v, float &h, float &s, float &va, int max)
+{
+ float r, g, b;
+ int r_i, g_i, b_i;
+
+// if(max == 0xffff)
+// {
+// YUV::yuv.yuv_to_rgb_16(r_i, g_i, b_i, y, u, v);
+// }
+// else
+ {
+ YUV::yuv.yuv_to_rgb_8(r_i, g_i, b_i, y, u, v);
+ }
+ r = (float)r_i / max;
+ g = (float)g_i / max;
+ b = (float)b_i / max;
+
+ float h2, s2, v2;
+ HSV::rgb_to_hsv(r, g, b, h2, s2, v2);
+
+ h = h2; s = s2; va = v2;
+ return 0;
+}
+
+int HSV::hsv_to_yuv(int &y, int &u, int &v, float h, float s, float va, int max)
+{
+ float r, g, b;
+ int r_i, g_i, b_i;
+ HSV::hsv_to_rgb(r, g, b, h, s, va);
+ r = r * max + 0.5;
+ g = g * max + 0.5;
+ b = b * max + 0.5;
+ r_i = (int)CLIP(r, 0, max);
+ g_i = (int)CLIP(g, 0, max);
+ b_i = (int)CLIP(b, 0, max);
+
+ int y2, u2, v2;
+// if(max == 0xffff)
+// YUV::yuv.rgb_to_yuv_16(r_i, g_i, b_i, y2, u2, v2);
+// else
+ YUV::yuv.rgb_to_yuv_8(r_i, g_i, b_i, y2, u2, v2);
+
+ y = y2; u = u2; v = v2;
+ return 0;
+}
+
+YUV::YUV()
+{
+ for(int i = 0; i < 0x100; i++) {
+// compression
+ rtoy_tab_8[i] = (int)(R_TO_Y * 0x100 * i);
+ rtou_tab_8[i] = (int)(R_TO_U * 0x100 * i);
+ rtov_tab_8[i] = (int)(R_TO_V * 0x100 * i);
+
+ gtoy_tab_8[i] = (int)(G_TO_Y * 0x100 * i);
+ gtou_tab_8[i] = (int)(G_TO_U * 0x100 * i);
+ gtov_tab_8[i] = (int)(G_TO_V * 0x100 * i);
+
+ btoy_tab_8[i] = (int)(B_TO_Y * 0x100 * i);
+ btou_tab_8[i] = (int)(B_TO_U * 0x100 * i) + 0x8000;
+ btov_tab_8[i] = (int)(B_TO_V * 0x100 * i) + 0x8000;
+ }
+
+ vtor_8 = &(vtor_tab_8[(0x100) / 2]);
+ vtog_8 = &(vtog_tab_8[(0x100) / 2]);
+ utog_8 = &(utog_tab_8[(0x100) / 2]);
+ utob_8 = &(utob_tab_8[(0x100) / 2]);
+
+ for(int i = (-0x100) / 2; i < (0x100) / 2; i++) {
+// decompression
+ vtor_8[i] = (int)(V_TO_R * 0x100 * i);
+ vtog_8[i] = (int)(V_TO_G * 0x100 * i);
+
+ utog_8[i] = (int)(U_TO_G * 0x100 * i);
+ utob_8[i] = (int)(U_TO_B * 0x100 * i);
+ }
+
+ for(int i = 0; i < 0x10000; i++) {
+// compression
+ rtoy_tab_16[i] = (int)(R_TO_Y * 0x100 * i);
+ rtou_tab_16[i] = (int)(R_TO_U * 0x100 * i);
+ rtov_tab_16[i] = (int)(R_TO_V * 0x100 * i);
+
+ gtoy_tab_16[i] = (int)(G_TO_Y * 0x100 * i);
+ gtou_tab_16[i] = (int)(G_TO_U * 0x100 * i);
+ gtov_tab_16[i] = (int)(G_TO_V * 0x100 * i);
+
+ btoy_tab_16[i] = (int)(B_TO_Y * 0x100 * i);
+ btou_tab_16[i] = (int)(B_TO_U * 0x100 * i) + 0x800000;
+ btov_tab_16[i] = (int)(B_TO_V * 0x100 * i) + 0x800000;
+ }
+
+ vtor_16 = &(vtor_tab_16[(0x10000) / 2]);
+ vtog_16 = &(vtog_tab_16[(0x10000) / 2]);
+ utog_16 = &(utog_tab_16[(0x10000) / 2]);
+ utob_16 = &(utob_tab_16[(0x10000) / 2]);
+
+ for(int i = (-0x10000) / 2; i < (0x10000) / 2; i++) {
+// decompression
+ vtor_16[i] = (int)(V_TO_R * 0x100 * i);
+ vtog_16[i] = (int)(V_TO_G * 0x100 * i);
+
+ utog_16[i] = (int)(U_TO_G * 0x100 * i);
+ utob_16[i] = (int)(U_TO_B * 0x100 * i);
+ }
+}
+
+YUV::~YUV()
+{
+}
+
projects / goodguy / history.git / blobdiff