fix avarage effect #42

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

@@ -1,7 +1,7 @@
 /* 
  * Linux VeeJay
  *
- * Copyright(C)2002 Niels Elburg <elburg@hio.hen.nl>
+ * Copyright(C)2002-2015 Niels Elburg <nwelburg@gmail.com>
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License
@@ -23,49 +23,109 @@
 #include <libvjmem/vjmem.h>
 #include "average.h"
 #include "common.h"
+
+static double *running_sum[4] = { NULL, NULL, NULL, NULL };
+static int last_params[2] = { 0,0 };
+static int frame_count = -1;
+
 vj_effect *average_init(int w, int h)
 {
     vj_effect *ve = (vj_effect *) vj_calloc(sizeof(vj_effect));
-    ve->num_params = 1;
+    ve->num_params = 2;
-
     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] = 1;
-    ve->limits[1][0] = 100;
+    ve->limits[1][0] = 1000;
+	ve->limits[0][1] = 0;
+	ve->limits[1][1] = 1;
     ve->defaults[0] = 1;
-	ve->parallel = 1;
+	ve->defaults[1] = 0;
+	ve->parallel = 0; //@ cannot run in parallel
     ve->description = "Average";
-    ve->sub_format = 0;
+    ve->sub_format = 1; 
     ve->extra_frame = 0;
 	ve->has_user = 0;
-	ve->param_description = vje_build_param_list( ve->num_params, "Value");
+	ve->param_description = vje_build_param_list( ve->num_params, "Number of frames to average", "Mode");
     return ve;
 }
 
-void average_apply(VJFrame *frame, int width, int height, int val)
+int	average_malloc(int width, int height)
+{
+	running_sum[0] = (double*) vj_calloc( sizeof(double) * RUP8(width * height * 3 ));
+	if(!running_sum[0])
+		return 0;
+	running_sum[1] = running_sum[0] + RUP8(width*height);
+	running_sum[2] = running_sum[1] + RUP8(width*height);
+	return 1;
+}
+
+void average_free() 
+{
+	if(running_sum[0]) {
+		free(running_sum[0]);
+		running_sum[0] = NULL;
+	}
+	last_params[0] = 0;
+	last_params[1] = 0;
+	frame_count = -1;
+}	
+
+void average_apply(VJFrame *frame, int width, int height, int max_sum, int mode)
 {
     unsigned int i;
     const unsigned int len = frame->len;
-    const unsigned int uv_len = frame->uv_len;
     uint8_t *Y = frame->data[0];
     uint8_t *Cb = frame->data[1];
     uint8_t *Cr = frame->data[2];
-    int a,b;
     
-    for (i = 0; i < len; i++) {
+	if( last_params[0] != max_sum || last_params[1] != mode || ( mode == 0 && frame_count == max_sum) )
-	a = Y[i];
+	{
-	b = ((val-1) * a + a)/val;
+		veejay_memset( running_sum[0], 0, sizeof(double) * (len + len + len) );
-	Y[i] = CLAMP_Y(b);
+		last_params[0] = max_sum;
-    }
+		last_params[1] = mode;
+		frame_count = 1;
+	}
 
-    for (i = 0; i < uv_len; i++) {
+	if( mode == 0 )
-	a = Cb[i];
+	{
-	b = ((val-1) * a + a)/val;
+		if( frame_count <= max_sum ) {
-	Cb[i] = CLAMP_UV(b);
+			for (i = 0; i < len; i++) {
-	a = Cr[i];
+				running_sum[0][i] += Y[i];
-	b = ((val-1) * a + a )/val;
+				running_sum[1][i] += Cb[i];
-	Cr[i] = CLAMP_UV(b);
+				running_sum[2][i] += Cr[i];
-    }
+			}
+		}
+
+		if( frame_count > 2 ) {
+
+			for (i = 0; i < len; i++) {
+				Y[i] = (uint8_t)(running_sum[0][i] / frame_count );
+				Cb[i] = (uint8_t)(running_sum[1][i] / frame_count );
+				Cr[i] = (uint8_t)(running_sum[2][i] / frame_count );
+			}
+		}
+
+		if( frame_count <= max_sum )
+			frame_count ++;
+	}
+	else
+	{
+		for (i = 0; i < len; i++) {
+			running_sum[0][i] += Y[i];
+			running_sum[1][i] += Cb[i];
+			running_sum[2][i] += Cr[i];
+		}
+
+		if( frame_count > 2 )
+		{
+			for (i = 0; i < len; i++) {
+				Y[i] = (running_sum[0][i] / frame_count );
+				Cb[i] = (running_sum[1][i] / frame_count );
+				Cr[i] = (running_sum[2][i] / frame_count );
+			}
+		}
+		frame_count ++;
+	}
 }
-void average_free(){}
+

veejay-current/veejay-server/libvje/effects/average.h

@@ -1,7 +1,7 @@
 /* 
  * Linux VeeJay
  *
- * Copyright(C)2002 Niels Elburg <elburg@hio.hen.nl>
+ * Copyright(C)2002-2015 Niels Elburg <nwelburg@gmail.com>
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License
@@ -25,6 +25,8 @@
 #include <stdint.h>
 
 vj_effect *average_init();
-void average_apply(VJFrame *src, int width, int height, int val);
+void average_apply(VJFrame *src, int width, int height, int sum, int mode);
+void average_free();
+int	average_malloc(int width, int height);
 void average_free();
 #endif

veejay-current/veejay-server/libvje/internal.h

@@ -494,7 +494,7 @@ extern void bar_apply(VJFrame *frame, VJFrame *frame2,
 extern void vbar_apply(VJFrame *frame, VJFrame *frame2,
 	int w, int h, int d, int x1, int x2, int t1, int t2);
 
-extern void average_apply(VJFrame *frame, int w, int h, int val);
+extern void average_apply(VJFrame *frame, int w, int h, int val, int mode);
 
 extern void ripple_apply(VJFrame *frame, int width, int height, int waves, int ampli,int atten);
 

veejay-current/veejay-server/libvje/vj-effect.c

@@ -275,6 +275,7 @@ static struct
 {	slicer_malloc,			slicer_free,		VJ_VIDEO_EFFECT_SLICER		},
 {	perspective_malloc,		perspective_free,	VJ_IMAGE_EFFECT_PERSPECTIVE },
 {	feathermask_malloc,		feathermask_free,	VJ_IMAGE_EFFECT_ALPHAFEATHERMASK },
+{	average_malloc,			average_free,		VJ_IMAGE_EFFECT_AVERAGE },
 {	NULL			,	NULL			,0				},
 };
 

veejay-current/veejay-server/libvje/vj-effman.c

@@ -368,7 +368,7 @@ void vj_effman_apply_image_effect(
 	sinoids_apply(frames[0], frames[0]->width, frames[0]->height,arg[0],arg[1]);
 	break;
      case VJ_IMAGE_EFFECT_AVERAGE:
-	average_apply(frames[0],frames[0]->width,frames[0]->height,arg[0]);
+	average_apply(frames[0],frames[0]->width,frames[0]->height,arg[0],arg[1]);
 	break;
      case VJ_IMAGE_EFFECT_RIPPLE:
 	ripple_apply(frames[0],frames[0]->width,frames[0]->height,arg[0],arg[1],arg[2]);