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dj_eq_1901.xml
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dj_eq_1901.xml
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<?xml version="1.0"?>
<!DOCTYPE ladspa SYSTEM "ladspa-swh.dtd">
<?xml-stylesheet href="ladspa.css" type="text/css"?>
<ladspa>
<global>
<meta name="maker" value="Steve Harris <steve@plugin.org.uk>"/>
<meta name="copyright" value="GPL"/>
<meta name="properties" value="HARD_RT_CAPABLE"/>
<code>
#include "ladspa-util.h"
#include "util/biquad.h"
#define BANDS 3
#define PEAK_BW 0.3f /* Peak EQ bandwidth (octaves) */
#define SHELF_SLOPE 1.5f /* Shelf EQ slope (arb. units) */
</code>
</global>
<plugin label="dj_eq_mono" id="1907" class="EQPlugin">
<name>DJ EQ (mono)</name>
<p>The design for this plugin is taken from the Allen \& Heath Xone 32
DJ mixer. It was suggested by Patrick Shirkey. Mono version requested by Adam King</p>
<callback event="instantiate"><![CDATA[
fs = s_rate;
filters = calloc(BANDS, sizeof(biquad));
]]></callback>
<callback event="activate"><![CDATA[
biquad_init(&filters[0]);
eq_set_params(&filters[0], 100.0f, 0.0f, PEAK_BW, fs);
biquad_init(&filters[1]);
eq_set_params(&filters[1], 1000.0f, 0.0f, PEAK_BW, fs);
biquad_init(&filters[2]);
hs_set_params(&filters[2], 10000.0f, 0.0f, SHELF_SLOPE, fs);
]]></callback>
<callback event="run"><![CDATA[
unsigned long pos;
float samp;
eq_set_params(&filters[0], 100.0f, lo, PEAK_BW, fs);
eq_set_params(&filters[1], 1000.0f, mid, PEAK_BW, fs);
hs_set_params(&filters[2], 10000.0f, hi, SHELF_SLOPE, fs);
for (pos = 0; pos < sample_count; pos++) {
samp = biquad_run(&filters[0], input[pos]);
samp = biquad_run(&filters[1], samp);
samp = biquad_run(&filters[2], samp);
buffer_write(output[pos], samp);
}
*(plugin_data->latency) = 3; //XXX is this right?
]]></callback>
<port label="lo" dir="input" type="control" hint="default_0">
<name>Lo gain (dB)</name>
<p>Controls the gain of the low (100Hz) peak/dip band</p>
<range min="-70" max="+6"/>
</port>
<port label="mid" dir="input" type="control" hint="default_0">
<name>Mid gain (dB)</name>
<p>Controls the gain of the mid (1000Hz) peak/dip band</p>
<range min="-70" max="+6"/>
</port>
<port label="hi" dir="input" type="control" hint="default_0">
<name>Hi gain (dB)</name>
<p>Controls the gain of the high (10000Hz) shelf band</p>
<range min="-70" max="+6"/>
</port>
<port label="input" dir="input" type="audio">
<name>Input</name>
</port>
<port label="output" dir="output" type="audio">
<name>Output</name>
</port>
<port label="latency" dir="output" type="control">
<name>latency</name>
</port>
<instance-data label="fs" type="float"/>
<instance-data label="filters" type="biquad *"/>
</plugin>
<plugin label="dj_eq" id="1901" class="EQPlugin">
<name>DJ EQ</name>
<p>The design for this plugin is taken from the Allen \& Heath Xone 32
DJ mixer. It was suggested by Patrick Shirkey.</p>
<callback event="instantiate"><![CDATA[
fs = s_rate;
filters = calloc(BANDS * 2, sizeof(biquad));
]]></callback>
<callback event="activate"><![CDATA[
int i;
for (i=0; i<2; i++) {
biquad_init(&filters[i*BANDS + 0]);
eq_set_params(&filters[i*BANDS + 0], 100.0f, 0.0f, PEAK_BW, fs);
biquad_init(&filters[i*BANDS + 1]);
eq_set_params(&filters[i*BANDS + 1], 1000.0f, 0.0f, PEAK_BW, fs);
biquad_init(&filters[i*BANDS + 2]);
hs_set_params(&filters[i*BANDS + 2], 10000.0f, 0.0f, SHELF_SLOPE, fs);
}
]]></callback>
<callback event="run"><![CDATA[
unsigned long pos;
unsigned int i;
float samp;
for (i=0; i<2; i++) {
eq_set_params(&filters[i*BANDS + 0], 100.0f, lo, PEAK_BW, fs);
eq_set_params(&filters[i*BANDS + 1], 1000.0f, mid, PEAK_BW, fs);
hs_set_params(&filters[i*BANDS + 2], 10000.0f, hi, SHELF_SLOPE, fs);
}
for (pos = 0; pos < sample_count; pos++) {
samp = biquad_run(&filters[0], left_input[pos]);
samp = biquad_run(&filters[1], samp);
samp = biquad_run(&filters[2], samp);
buffer_write(left_output[pos], samp);
samp = biquad_run(&filters[3], right_input[pos]);
samp = biquad_run(&filters[4], samp);
samp = biquad_run(&filters[5], samp);
buffer_write(right_output[pos], samp);
}
*(plugin_data->latency) = 3; //XXX is this right?
]]></callback>
<port label="lo" dir="input" type="control" hint="default_0">
<name>Lo gain (dB)</name>
<p>Controls the gain of the low (100Hz) peak/dip band</p>
<range min="-70" max="+6"/>
</port>
<port label="mid" dir="input" type="control" hint="default_0">
<name>Mid gain (dB)</name>
<p>Controls the gain of the mid (1000Hz) peak/dip band</p>
<range min="-70" max="+6"/>
</port>
<port label="hi" dir="input" type="control" hint="default_0">
<name>Hi gain (dB)</name>
<p>Controls the gain of the high (10000Hz) shelf band</p>
<range min="-70" max="+6"/>
</port>
<port label="left_input" dir="input" type="audio">
<name>Input L</name>
</port>
<port label="right_input" dir="input" type="audio">
<name>Input R</name>
</port>
<port label="left_output" dir="output" type="audio">
<name>Output L</name>
</port>
<port label="right_output" dir="output" type="audio">
<name>Output R</name>
</port>
<port label="latency" dir="output" type="control">
<name>latency</name>
</port>
<instance-data label="fs" type="float"/>
<instance-data label="filters" type="biquad *"/>
</plugin>
</ladspa>