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/noiseadd.c

@@ -0,0 +1,198 @@
+/* 
+ * 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 <config.h>
+#include <stdint.h>
+#include <libvjmem/vjmem.h>
+#include "noiseadd.h"
+
+static uint8_t *Yb_frame;
+
+vj_effect *noiseadd_init(int width , int height)
+{
+    vj_effect *ve = (vj_effect *) vj_calloc(sizeof(vj_effect));
+    ve->num_params = 2;
+    ve->limits[0] = (int *) vj_calloc(sizeof(int) * ve->num_params);
+    ve->limits[1] = (int *) vj_calloc(sizeof(int) * ve->num_params);
+    ve->defaults = (int *) vj_calloc(sizeof(int) * ve->num_params);
+    ve->defaults[0] = 0;	/* type */
+    ve->defaults[1] = 1000;
+    ve->limits[0][0] = 0;
+    ve->limits[1][0] = 2;
+    ve->limits[0][1] = 1;
+    ve->limits[1][1] = 10000;
+    ve->description = "Amplify low noise";
+
+    ve->extra_frame = 0;
+    ve->sub_format = 0;
+	ve->has_user = 0;
+	ve->param_description = vje_build_param_list( ve->num_params, "Mode", "Amplification");
+    return ve;
+}
+// FIXME private
+
+int noiseadd_malloc(int width, int height)
+{
+  
+  Yb_frame = (uint8_t *) vj_calloc( sizeof(uint8_t) * width * height);
+  if(!Yb_frame) return 0;
+  return 1;
+}
+
+void noiseadd_free() {
+  if(Yb_frame) free(Yb_frame);
+  Yb_frame = NULL;
+}
+
+void noiseblur1x3_maskapply(uint8_t *src[3], int width, int height, int coeef ) {
+
+    int r, c;
+    double k = (coeef/100.0);
+    uint8_t d;
+    
+    const int len = (width*height);
+
+    for (r = 0; r < len; r += width) {
+	for (c = 1; c < width-1; c++) {
+		Yb_frame[c + r] = (src[0][r + c - 1] +
+				  src[0][r + c] +
+				  src[0][r + c + 1]
+		    ) / 3;
+	}
+    }
+    
+    for(c=0; c < len; c++) {
+	  /* get higher signal frequencies and*/	
+	  /* multiply result with coeffcient to get d*/
+	  d = (Yb_frame[c] - src[0][c]) * k;
+	  src[0][c] = d;
+	}
+
+}
+void noiseblur3x3_maskapply(uint8_t *src[3], int width, int height, int coeef ) {
+
+    int r, c;
+    const double k = (coeef/1000.0);
+    uint8_t d;
+    
+    const int len = (width*height)-width;
+
+
+    for (r = width; r < len; r += width) {
+	for (c = 1; c < width-1; c++) {
+		Yb_frame[c + r] = (src[0][r - width + c - 1] +
+				  src[0][r - width + c] +
+				  src[0][r - width + c + 1] +
+				  src[0][r + width + c - 1] +
+				  src[0][r + width + c] +
+				  src[0][r + width + c + 1] +
+				  src[0][r + c] +
+				  src[0][r + c + 1] +
+				  src[0][r + c - 1]  
+		    ) / 9;
+	}
+    }
+
+    for(c=width; c < len; c++) {
+	  /* get higher signal frequencies and*/	
+	  /* multiply result with coeffcient to get d*/
+	  d = (Yb_frame[c] - src[0][c]) * k;
+	  src[0][c] = d;
+	}
+
+}
+
+void noiseneg3x3_maskapply(uint8_t *src[3], int width, int height, int coeef ) {
+
+    int r, c;
+    const double k = (coeef/1000.0);
+    uint8_t d;
+    
+    int len = (width*height)-width;
+
+
+    for (r = width; r < len; r += width) {
+	for (c = 1; c < width-1; c++) {
+		Yb_frame[c + r] = 255 - ((src[0][r - width + c - 1] +
+				  src[0][r - width + c] +
+				  src[0][r - width + c + 1] +
+				  src[0][r + width + c - 1] +
+				  src[0][r + width + c] +
+				  src[0][r + width + c + 1] +
+				  src[0][r + c] +
+				  src[0][r + c + 1] +
+				  src[0][r + c - 1]  
+		    )) / 9;
+	}
+    }
+
+    for(c=width; c < len; c++) {
+	  /* get higher signal frequencies and*/	
+	  /* multiply result with coeffcient to get d*/
+	  d = (src[0][c] - Yb_frame[c]) * k;
+	  src[0][c] = d;
+	}
+
+}
+
+void noiseadd3x3_maskapply(uint8_t *src[3], int width, int height, int coeef ) {
+
+    int r, c;
+    const double k = (coeef/1000.0);
+    uint8_t d;
+    
+    const int len = (width*height)-width;
+
+
+    for (r = width; r < len; r += width) {
+	for (c = 1; c < width-1; c++) {
+		Yb_frame[c + r] = (src[0][r - width + c - 1] +
+				  src[0][r - width + c] +
+				  src[0][r - width + c + 1] +
+				  src[0][r + width + c - 1] +
+				  src[0][r + width + c] +
+				  src[0][r + width + c + 1] +
+				  src[0][r + c] +
+				  src[0][r + c + 1] +
+				  src[0][r + c - 1]  
+		    ) / 9;
+	}
+    }
+
+    for(c=width; c < len; c++) {
+	  /* get higher signal frequencies and*/	
+	  /* multiply result with coeffcient to get d*/
+	  d = (src[0][c] - Yb_frame[c]) * k;
+	  src[0][c] = d;
+	}
+
+}
+
+
+void noiseadd_apply( VJFrame *frame, int width, int height, int type, int coeef) {
+
+	switch(type) {
+	case 0:
+	noiseblur1x3_maskapply(frame->data,width,height,coeef);	break;
+	case 1:
+	noiseblur3x3_maskapply(frame->data,width,height,coeef);	break;
+	case 2:
+	noiseneg3x3_maskapply(frame->data,width,height,coeef);	 break;
+	}
+}