Initial checkin of veejay 1.4

git-svn-id: svn://code.dyne.org/veejay/trunk@1172 eb8d1916-c9e9-0310-b8de-cf0c9472ead5

veejay-current/veejay-server/libvje/effects/lumablend.c

@@ -0,0 +1,178 @@
+/* 
+ * Linux VeeJay
+ *
+ * Copyright(C)2004 Niels Elburg <elburg@hio.hen.nl>
+ *
+ * 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 <stdint.h>
+#include <libvjmem/vjmem.h>
+#include "lumablend.h"
+
+vj_effect *lumablend_init(int w, int h)
+{
+    vj_effect *ve = (vj_effect *) vj_calloc(sizeof(vj_effect));
+    ve->num_params = 4;
+    ve->defaults = (int *) vj_calloc(sizeof(int) * ve->num_params);	/* default values */
+    ve->limits[0] = (int *) vj_calloc(sizeof(int) * ve->num_params);	/* min */
+    ve->limits[1] = (int *) vj_calloc(sizeof(int) * ve->num_params);	/* max */
+    ve->limits[0][0] = 0;	/* type */
+    ve->limits[1][0] = 2;
+    ve->limits[0][1] = 0;	/* threshold 1 */
+    ve->limits[1][1] = 255;
+    ve->limits[0][2] = 0;	/* threshold 2 */
+    ve->limits[1][2] = 255;
+    ve->limits[0][3] = 0;	/*opacity */
+    ve->limits[1][3] = 255;
+    ve->defaults[0] = 2;
+    ve->defaults[1] = 0;
+    ve->defaults[2] = 35;
+    ve->defaults[3] = 150;
+    ve->description = "Opacity by Threshold";
+    ve->extra_frame = 1;
+    ve->sub_format = 1;
+	ve->has_user = 0;
+	ve->param_description = vje_build_param_list(ve->num_params, "Mode", "Threshold A", "Threshold B", "Opacity" );
+
+    return ve;
+}
+
+
+void opacity_by_threshold(uint8_t * yuv1[3], uint8_t * yuv2[3], int width,
+			  int height, int threshold, int threshold2,
+			  int opacity)
+{
+
+    unsigned int x, y, len = width * height;
+    uint8_t a1, a2;
+    unsigned int op0, op1;
+    op1 = (opacity > 255) ? 255 : opacity;
+    op0 = 255 - op1;
+
+
+    for (y = 0; y < len; y += width) {
+	for (x = 0; x < width; x++) {
+	    a1 = yuv1[0][x + y];
+	    a2 = yuv2[0][x + y];
+	    if (a1 >= threshold && a1 <= threshold2) {
+		yuv1[0][x + y] = (op0 * a1 + op1 * a2) >> 8;
+		yuv1[1][x + y] =
+		    (op0 * yuv1[1][x + y] + op1 * yuv2[1][x + y]) >> 8;
+		yuv1[2][x + y] =
+		    (op0 * yuv1[2][x + y] + op1 * yuv2[2][x + y]) >> 8;
+	    }
+	}
+    }
+
+}
+
+
+void opacity_by_threshold_(uint8_t * yuv1[3], uint8_t * yuv2[3], int width,
+			   int height, int threshold, int threshold2,
+			   int opacity)
+{
+
+    unsigned int x, y, len = width * height;
+    uint8_t a1, a2;
+    unsigned int op0, op1;
+    op1 = (opacity > 255) ? 255 : opacity;
+    op0 = 255 - op1;
+
+    for (y = 0; y < len; y += width) {
+	for (x = 0; x < width; x++) {
+	    a1 = yuv1[0][x + y];
+	    a2 = yuv2[0][x + y];
+	    if (a2 > threshold && a2 < threshold2) {
+		yuv1[0][x + y] = (op0 * a1 + op1 * a2) >> 8;
+		yuv1[1][x + y] =
+		    (op0 * yuv1[1][x + y] + op1 * yuv2[1][x + y]) >> 8;
+		yuv1[2][x + y] =
+		    (op0 * yuv1[2][x + y] + op1 * yuv2[2][x + y]) >> 8;
+	    }
+	}
+    }
+}
+
+
+
+void opacity_by_threshold_blur(uint8_t * yuv1[3], uint8_t * yuv2[3],
+			       int width, int height, int threshold,
+			       int threshold2, int opacity)
+{
+
+    unsigned int x, y, len = width * height - width;
+    uint8_t a1, a2;
+    unsigned int op0, op1;
+    op1 = (opacity > 255) ? 255 : opacity;
+    op0 = 255 - op1;
+   /* incomplete */
+    for (y = width; y < len; y += width) {
+	for (x = 1; x < width-1; x++) {
+	    a1 = yuv1[0][x + y];
+	    a2 = yuv2[0][x + y];
+		if (a1 >= threshold && a1 <= threshold2) {
+		    a1 = (yuv1[0][y - width + x - 1] +
+			  yuv1[0][y - width + x + 1] +
+			  yuv1[0][y - width + x] +
+			  yuv1[0][y + x] +
+			  yuv1[0][y + x - 1] +
+			  yuv1[0][y + x + 1] +
+			  yuv1[0][y + width + x] +
+			  yuv1[0][y + width + x + 1] +
+			  yuv1[0][y + width + x - 1]
+			) / 9;
+
+		    a2 = (yuv2[0][y - width + x - 1] +
+			  yuv2[0][y - width + x + 1] +
+			  yuv2[0][y - width + x] +
+			  yuv2[0][y + x] +
+			  yuv2[0][y + x - 1] +
+			  yuv2[0][y + x + 1] +
+			  yuv2[0][y + width + x] +
+			  yuv2[0][y + width + x + 1] +
+			  yuv2[0][y + width + x - 1]
+			) / 9;
+
+		    yuv1[0][x + y] = (op0 * a1 + op1 * a2) >> 8;
+		    yuv1[1][x + y] =
+			(op0 * yuv1[1][x + y] + op1 * yuv2[1][x + y]) >> 8;
+		    yuv1[2][x + y] =
+			(op0 * yuv1[2][x + y] + op1 * yuv2[2][x + y]) >> 8;
+		}
+       }
+   }
+}
+
+void lumablend_apply(VJFrame *frame, VJFrame *frame2, int width,
+		     int height, int type, int t1, int t2, int opacity)
+{
+
+    switch (type) {
+    case 0:
+	opacity_by_threshold(frame->data, frame2->data, width, height, t1, t2, opacity);
+	break;
+    case 1:
+	opacity_by_threshold_(frame->data, frame2->data, width, height, t1, t2, opacity);
+	break;
+    case 2:
+	opacity_by_threshold_blur(frame->data, frame2->data, width, height, t1, t2,
+				  opacity);
+	break;
+
+    }
+
+}
+void lumablend_free(){}