Added configuration settings for mathbox waterfall

config_webrx.py

@@ -117,9 +117,9 @@ To use a HackRF, compile the HackRF host tools from its "stdout" branch:
 #format_conversion="csdr convert_s16_f | csdr gain_ff 30"
 
 # >> /dev/urandom test signal source
-#samp_rate = 2400000
-#start_rtl_command="cat /dev/urandom | (pv -qL `python -c 'print int({samp_rate} * 2.2)'` 2>&1)".format(rf_gain=rf_gain, center_freq=center_freq, samp_rate=samp_rate)
-#format_conversion="csdr convert_u8_f"
+samp_rate = 2400000
+start_rtl_command="cat /dev/urandom | (pv -qL `python -c 'print int({samp_rate} * 2.2)'` 2>&1)".format(rf_gain=rf_gain, center_freq=center_freq, samp_rate=samp_rate)
+format_conversion="csdr convert_u8_f"
 
 # >> Pre-recorded raw I/Q file as signal source
 # You will have to correctly specify: samp_rate, center_freq, format_conversion in order to correctly play an I/Q file.
@@ -151,6 +151,12 @@ waterfall_min_level = -115 #in dB
 waterfall_max_level = 0
 #A guide is available to help you set these values: https://github.com/simonyiszk/openwebrx/wiki/Calibrating-waterfall-display-levels
 
+mathbox_waterfall_frequency_resolution = 128 #bins
+mathbox_waterfall_history_length = 10 #seconds
+mathbox_waterfall_colors = "[0x000000ff,0x2e6893ff, 0x69a5d0ff, 0x214b69ff, 0x9dc4e0ff,  0xfff775ff, 0xff8a8aff, 0xb20000ff]"
+
+
+
 #Warning! The settings below are very experimental.
 csdr_dynamic_bufsize = False # This allows you to change the buffering mode of csdr.
 csdr_print_bufsizes = False  # This prints the buffer sizes used for csdr processes.

htdocs/index.wrx

@@ -33,6 +33,9 @@
 			var waterfall_colors=%[WATERFALL_COLORS];
 			var waterfall_min_level_default=%[WATERFALL_MIN_LEVEL];
 			var waterfall_max_level_default=%[WATERFALL_MAX_LEVEL];
+			var mathbox_waterfall_frequency_resolution=%[MATHBOX_WATERFALL_FRES];
+			var mathbox_waterfall_history_length=%[MATHBOX_WATERFALL_THIST];
+			var mathbox_waterfall_colors=%[MATHBOX_WATERFALL_COLORS];
 		</script>
 		<script src="sdr.js"></script>
 		<script src="mathbox-bundle.min.js"></script>

htdocs/openwebrx.js

@@ -1659,17 +1659,18 @@ function open_websocket()
 	ws.onerror = on_ws_error;
 }
 
-function waterfall_mkcolor(db_value)
+function waterfall_mkcolor(db_value, waterfall_colors_arg)
 {
+	if(typeof waterfall_colors_arg === 'undefined') waterfall_colors_arg = waterfall_colors;
 	if(db_value<waterfall_min_level) db_value=waterfall_min_level;
 	if(db_value>waterfall_max_level) db_value=waterfall_max_level;
 	full_scale=waterfall_max_level-waterfall_min_level;
 	relative_value=db_value-waterfall_min_level;
 	value_percent=relative_value/full_scale;
-	percent_for_one_color=1/(waterfall_colors.length-1);
+	percent_for_one_color=1/(waterfall_colors_arg.length-1);
 	index=Math.floor(value_percent/percent_for_one_color);
 	remain=(value_percent-percent_for_one_color*index)/percent_for_one_color;
-	return color_between(waterfall_colors[index+1],waterfall_colors[index],remain);
+	return color_between(waterfall_colors_arg[index+1],waterfall_colors_arg[index],remain);
 }
 
 function color_between(first, second, percent)
@@ -1960,8 +1961,8 @@ var mathbox_element;
 
 function mathbox_init()
 {
-	mathbox_data_max_depth_time = 10; //sec
-	mathbox_data_max_depth = fft_fps * mathbox_data_max_depth_time; //how many lines can the buffer store
+	//mathbox_waterfall_history_length is defined in the config
+	mathbox_data_max_depth = fft_fps * mathbox_waterfall_history_length; //how many lines can the buffer store
 	mathbox_data_current_depth = 0; //how many lines are in the buffer currently
 	mathbox_data_index = 0; //the index of the last empty line / the line to be overwritten
 	mathbox_data = new Float32Array(fft_size * mathbox_data_max_depth);
@@ -2021,7 +2022,7 @@ function mathbox_init()
 	var remap = function(x,z,t)
 	{
 		var currentTimePos = mathbox_data_global_index/(fft_fps*1.0);
-		var realZAdd = (-(t-currentTimePos)/mathbox_data_max_depth_time);
+		var realZAdd = (-(t-currentTimePos)/mathbox_waterfall_history_length);
 		var zAdd = realZAdd - mathbox_correction_for_z;
 		if(zAdd<-0.2 || zAdd>0.2) { mathbox_correction_for_z = realZAdd; }
 
@@ -2051,7 +2052,7 @@ function mathbox_init()
 		if((y=remapResult.y)==undefined) return;
         emit(x, y, z+remapResult.zAdd);
       },
-      width:  128,
+      width:  mathbox_waterfall_frequency_resolution,
       height: mathbox_data_max_depth - 1,
       channels: 3,
       axes: [1, 3],
@@ -2061,13 +2062,13 @@ function mathbox_init()
       expr: function (emit, x, z, i, j, t) {
 		var dBValue;
 		if((dBValue=remap(x,z,t).dBValue)==undefined) return;
-		var color=waterfall_mkcolor(dBValue);
+		var color=waterfall_mkcolor(dBValue, mathbox_waterfall_colors);
         var b = (color&0xff)/255.0;
         var g = ((color&0xff00)>>8)/255.0;
         var r = ((color&0xff0000)>>16)/255.0;
         emit(r, g, b, 1.0);
       },
-      width:  128,
+      width:  mathbox_waterfall_frequency_resolution,
       height: mathbox_data_max_depth - 1,
       channels: 4,
       axes: [1, 3],

openwebrx.py

@@ -632,7 +632,10 @@ class WebRXHandler(BaseHTTPRequestHandler):
 						("%[START_MOD]",cfg.start_mod),
 						("%[WATERFALL_COLORS]",cfg.waterfall_colors),
 						("%[WATERFALL_MIN_LEVEL]",str(cfg.waterfall_min_level)),
-						("%[WATERFALL_MAX_LEVEL]",str(cfg.waterfall_max_level))
+						("%[WATERFALL_MAX_LEVEL]",str(cfg.waterfall_max_level)),
+						("%[MATHBOX_WATERFALL_FRES]",str(cfg.mathbox_waterfall_frequency_resolution)),
+						("%[MATHBOX_WATERFALL_THIST]",str(cfg.mathbox_waterfall_history_length)),
+						("%[MATHBOX_WATERFALL_COLORS]",cfg.mathbox_waterfall_colors),
 					)
 					for rule in replace_dictionary:
 						while data.find(rule[0])!=-1: