/usr/lib/lv2/filter.lv2/ui is in lv2fil 2.0+20100312.git18130f5a+dfsg0-1.
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#
# Copyright (C) 2008,2009 Nedko Arnaudov <nedko@arnaudov.name>
# Copyright (C) 2006 Leonard Ritter <contact@leonard-ritter.com>
# Filter response code by Fons Adriaensen
#
# 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; version 2 of the License
#
# 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
import sys
import os
import fcntl
import gtk
import gobject
import cairo
from math import pi, sin, cos, atan2, log, sqrt, hypot, log10
from colorsys import hls_to_rgb, rgb_to_hls
def map_coords_linear(x,y):
return x,1.0-y
def map_coords_spheric(x,y):
nx = cos(x * 2 * pi) * y
ny = -sin(x * 2 * pi) * y
return nx, ny
def get_peaks(f, tolerance=0.01, maxd=0.01, mapfunc=map_coords_linear):
corners = 360
yc = 1.0/corners
peaks = []
x0,y0 = 0.0,0.0
t0 = -9999.0
i0 = 0
for i in xrange(int(corners)):
p = i*yc
a = f(p)
x,y = mapfunc(p, a)
if i == 0:
x0,y0 = x,y
t = atan2((y0 - y), (x0 - x)) / (2*pi)
td = t - t0
if (abs(td) >= tolerance):
t0 = t
peaks.append((x,y))
x0,y0 = x,y
return peaks
def make_knobshape(gaps, gapdepth):
def knobshape_func(x):
x = (x*gaps)%1.0
w = 0.5
g1 = 0.5 - w*0.5
g2 = 0.5 + w*0.5
if (x >= g1) and (x < 0.5):
x = (x-g1)/(w*0.5)
return 0.5 - gapdepth * x * 0.9
elif (x >= 0.5) and (x < g2):
x = (x-0.5)/(w*0.5)
return 0.5 - gapdepth * (1-x) * 0.9
else:
return 0.5
return get_peaks(knobshape_func, 0.03, 0.05, map_coords_spheric)
def hls_to_color(h,l,s):
r,g,b = hls_to_rgb(h,l,s)
return gtk.gdk.color_parse('#%04X%04X%04X' % (int(r*65535),int(g*65535),int(b*65535)))
def color_to_hls(color):
string = color.to_string()
r = int(string[1:5], 16) / 65535.0
g = int(string[5:9], 16) / 65535.0
b = int(string[9:13], 16) / 65535.0
return rgb_to_hls(r, g, b)
MARKER_NONE = ''
MARKER_LINE = 'line'
MARKER_ARROW = 'arrow'
MARKER_DOT = 'dot'
LEGEND_NONE = ''
LEGEND_DOTS = 'dots' # painted dots
LEGEND_LINES = 'lines' # painted ray-like lines
LEGEND_RULER = 'ruler' # painted ray-like lines + a circular one
LEGEND_RULER_INWARDS = 'ruler-inwards' # same as ruler, but the circle is on the outside
LEGEND_LED_SCALE = 'led-scale' # an LCD scale
LEGEND_LED_DOTS = 'led-dots' # leds around the knob
class KnobTooltip:
def __init__(self):
self.tooltip_window = gtk.Window(gtk.WINDOW_POPUP)
self.tooltip = gtk.Label()
#self.tooltip.modify_fg(gtk.STATE_NORMAL, hls_to_color(0.0, 1.0, 0.0))
self.tooltip_timeout = None
vbox = gtk.VBox()
vbox2 = gtk.VBox()
vbox2.add(self.tooltip)
vbox2.set_border_width(2)
vbox.add(vbox2)
self.tooltip_window.add(vbox)
vbox.connect('expose-event', self.on_tooltip_expose)
def show_tooltip(self, knob):
text = knob.format_value()
rc = knob.get_allocation()
x,y = knob.window.get_origin()
self.tooltip_window.show_all()
w,h = self.tooltip_window.get_size()
wx,wy = x+rc.x-w, y+rc.y+rc.height/2-h/2
self.tooltip_window.move(wx,wy)
rc = self.tooltip_window.get_allocation()
self.tooltip_window.window.invalidate_rect((0,0,rc.width,rc.height), False)
self.tooltip.set_text(text)
if self.tooltip_timeout:
gobject.source_remove(self.tooltip_timeout)
self.tooltip_timeout = gobject.timeout_add(500, self.hide_tooltip)
def hide_tooltip(self):
self.tooltip_window.hide_all()
def on_tooltip_expose(self, widget, event):
ctx = widget.window.cairo_create()
rc = widget.get_allocation()
#ctx.set_source_rgb(*hls_to_rgb(0.0, 0.0, 0.5))
#ctx.paint()
ctx.set_source_rgb(*hls_to_rgb(0.0, 0.0, 0.5))
ctx.translate(0.5, 0.5)
ctx.set_line_width(1)
ctx.rectangle(rc.x, rc.y,rc.width-1,rc.height-1)
ctx.stroke()
return False
knob_tooltip = None
def get_knob_tooltip():
global knob_tooltip
if not knob_tooltip:
knob_tooltip = KnobTooltip()
return knob_tooltip
class SmartAdjustment(gtk.Adjustment):
def __init__(self, log=False, value=0, lower=0, upper=0, step_incr=0, page_incr=0, page_size=0):
self.log = log
gtk.Adjustment.__init__(self, value, lower, upper, step_incr, page_incr, page_size)
self.normalized_value = self.real2norm(self.value)
def real2norm(self, value):
if self.log:
return log(value / self.lower, self.upper / self.lower)
else:
return (value - self.lower) / (self.upper - self.lower)
def norm2real(self, value):
if self.log:
return self.lower * pow(self.upper / self.lower, value)
else:
return value * (self.upper - self.lower) + self.lower
def set_value(self, value):
self.normalized_value = self.real2norm(value)
gtk.Adjustment.set_value(self, value)
def get_normalized_value(self):
return self.normalized_value
def set_normalized_value(self, value):
self.normalized_value = value
if self.normalized_value < 0.0:
self.normalized_value = 0.0
elif self.normalized_value > 1.0:
self.normalized_value = 1.0
self.set_value(self.norm2real(self.normalized_value))
class Knob(gtk.VBox):
def __init__(self):
gtk.VBox.__init__(self)
self.gapdepth = 4
self.gaps = 10
self.value = 0.0
self.min_value = 0.0
self.max_value = 127.0
self.fg_hls = 0.0, 0.7, 0.0
self.legend_hls = None
self.dragging = False
self.start = 0.0
self.digits = 2
self.segments = 13
self.label = ''
self.marker = MARKER_LINE
self.angle = (3.0/4.0) * 2 * pi
self.knobshape = None
self.legend = LEGEND_DOTS
self.lsize = 2
self.lscale = False
self.set_double_buffered(True)
self.connect('realize', self.on_realize)
self.connect("size_allocate", self.on_size_allocate)
self.connect('expose-event', self.on_expose)
self.set_border_width(6)
self.set_size_request(50, 50)
self.tooltip_enabled = False
self.adj = None
def set_adjustment(self, adj):
self.min_value = 0.0
self.max_value = 1.0
self.value = adj.get_normalized_value()
if self.adj:
self.adj.disconnect(self.adj_id)
self.adj = adj
self.adj_id = adj.connect("value-changed", self.on_adj_value_changed)
def is_sensitive(self):
return self.get_property("sensitive")
def format_value(self):
if self.adj:
value = self.adj.value
else:
value = self.value
return ("%%.%if" % self.digits) % value
def show_tooltip(self):
if self.tooltip_enabled:
get_knob_tooltip().show_tooltip(self)
def on_realize(self, widget):
self.root = self.get_toplevel()
self.root.add_events(gtk.gdk.ALL_EVENTS_MASK)
self.root.connect('scroll-event', self.on_mousewheel)
self.root.connect('button-press-event', self.on_left_down)
self.root.connect('button-release-event', self.on_left_up)
self.root.connect('motion-notify-event', self.on_motion)
self.update_knobshape()
def update_knobshape(self):
rc = self.get_allocation()
b = self.get_border_width()
size = min(rc.width, rc.height) - 2*b
gd = float(self.gapdepth*0.5) / size
self.gd = gd
self.knobshape = make_knobshape(self.gaps, gd)
def set_legend_scale(self, scale):
self.lscale = scale
self.refresh()
def set_legend_line_width(self, width):
self.lsize = width
self.refresh()
def set_segments(self, segments):
self.segments = segments
self.refresh()
def set_marker(self, marker):
self.marker = marker
self.refresh()
def set_range(self, minvalue, maxvalue):
self.min_value = minvalue
self.max_value = maxvalue
self.set_value(self.value)
def quantize_value(self, value):
scaler = 10**self.digits
value = int((value*scaler)+0.5) / float(scaler)
return value
def on_adj_value_changed(self, adj):
new_value = adj.get_normalized_value()
if self.value != new_value:
self.value = new_value
self.refresh()
def set_value(self, value):
oldval = self.value
self.value = min(max(self.quantize_value(value), self.min_value), self.max_value)
if self.value != oldval:
if self.adj:
self.adj.set_normalized_value(value)
self.refresh()
def get_value(self):
return self.value
def set_top_color(self, h, l, s):
self.fg_hls = h,l,s
self.refresh()
def set_legend_color(self, h, l, s):
self.legend_hls = h,l,s
self.refresh()
def get_top_color(self):
return self.fg_hls
def set_gaps(self, gaps):
self.gaps = gaps
self.knobshape = None
self.refresh()
def get_gaps(self):
return self.gaps
def set_gap_depth(self, gapdepth):
self.gapdepth = gapdepth
self.knobshape = None
self.refresh()
def get_gap_depth(self):
return self.gapdepth
def set_angle(self, angle):
self.angle = angle
self.refresh()
def get_angle(self):
return self.angle
def set_legend(self, legend):
self.legend = legend
self.refresh()
def get_legend(self):
return self.legend
def on_left_down(self, widget, event):
#print "on_left_down"
# dont drag insensitive widgets
if not self.is_sensitive():
return False
if not sum(self.get_allocation().intersect((int(event.x), int(event.y), 1, 1))):
return False
if event.button == 1:
#print "start draggin"
self.startvalue = self.value
self.start = event.y
self.dragging = True
self.show_tooltip()
self.grab_add()
return True
return False
def on_left_up(self, widget, event):
#print "on_left_up"
if not self.dragging:
return False
if event.button == 1:
#print "stop draggin"
self.dragging = False
self.grab_remove()
return True
return False
def on_motion(self, widget, event):
#print "on_motion"
# dont drag insensitive widgets
if not self.is_sensitive():
return False
if self.dragging:
x,y,state = self.window.get_pointer()
rc = self.get_allocation()
range = self.max_value - self.min_value
scale = rc.height
if event.state & gtk.gdk.SHIFT_MASK:
scale = rc.height*8
value = self.startvalue - ((y - self.start)*range)/scale
oldval = self.value
self.set_value(value)
self.show_tooltip()
if oldval != self.value:
self.start = y
self.startvalue = self.value
return True
return False
def on_mousewheel(self, widget, event):
# dont move insensitive widgets
if not self.is_sensitive():
return False
if not sum(self.get_allocation().intersect((int(event.x), int(event.y), 1, 1))):
return
range = self.max_value - self.min_value
minstep = 1.0 / (10**self.digits)
if event.state & (gtk.gdk.SHIFT_MASK | gtk.gdk.BUTTON1_MASK):
step = minstep
else:
step = max(self.quantize_value(range/25.0), minstep)
value = self.value
if event.direction == gtk.gdk.SCROLL_UP:
value += step
elif event.direction == gtk.gdk.SCROLL_DOWN:
value -= step
self.set_value(value)
self.show_tooltip()
def on_size_allocate(self, widget, allocation):
#print allocation.x, allocation.y, allocation.width, allocation.height
self.update_knobshape()
def draw_points(self, ctx, peaks):
ctx.move_to(*peaks[0])
for peak in peaks[1:]:
ctx.line_to(*peak)
def draw(self, ctx):
if not self.legend_hls:
self.legend_hls = color_to_hls(self.style.fg[gtk.STATE_NORMAL])
if not self.knobshape:
self.update_knobshape()
startangle = pi*1.5 - self.angle*0.5
angle = ((self.value - self.min_value) / (self.max_value - self.min_value)) * self.angle + startangle
rc = self.get_allocation()
size = min(rc.width, rc.height)
kh = self.get_border_width() # knob height
ps = 1.0/size # pixel size
ps2 = 1.0 / (size-(2*kh)-1) # pixel size inside knob
ss = ps * kh # shadow size
lsize = ps2 * self.lsize # legend line width
# draw spherical
ctx.translate(rc.x, rc.y)
ctx.translate(0.5,0.5)
ctx.translate(size*0.5, size*0.5)
ctx.scale(size-(2*kh)-1, size-(2*kh)-1)
if self.legend == LEGEND_DOTS:
ctx.save()
ctx.set_source_rgb(*hls_to_rgb(*self.legend_hls))
dots = self.segments
for i in xrange(dots):
s = float(i)/(dots-1)
a = startangle + self.angle*s
ctx.save()
ctx.rotate(a)
r = lsize*0.5
if self.lscale:
r = max(r*s,ps2)
ctx.arc(0.5+lsize, 0.0, r, 0.0, 2*pi)
ctx.fill()
ctx.restore()
ctx.restore()
elif self.legend in (LEGEND_LINES, LEGEND_RULER, LEGEND_RULER_INWARDS):
ctx.save()
ctx.set_source_rgb(*hls_to_rgb(*self.legend_hls))
dots = self.segments
n = ps2*(kh-1)
for i in xrange(dots):
s = float(i)/(dots-1)
a = startangle + self.angle*s
ctx.save()
ctx.rotate(a)
r = n*0.9
if self.lscale:
r = max(r*s,ps2)
ctx.move_to(0.5+ps2+n*0.1, 0.0)
ctx.line_to(0.5+ps2+n*0.1+r, 0.0)
ctx.set_line_width(lsize)
ctx.stroke()
ctx.restore()
ctx.restore()
if self.legend == LEGEND_RULER:
ctx.save()
ctx.set_source_rgb(*hls_to_rgb(*self.legend_hls))
ctx.set_line_width(lsize)
ctx.arc(0.0, 0.0, 0.5+ps2+n*0.1, startangle, startangle+self.angle)
ctx.stroke()
ctx.restore()
elif self.legend == LEGEND_RULER_INWARDS:
ctx.save()
ctx.set_source_rgb(*hls_to_rgb(*self.legend_hls))
ctx.set_line_width(lsize)
ctx.arc(0.0, 0.0, 0.5+ps2+n, startangle, startangle+self.angle)
ctx.stroke()
# draw shadow only for sensitive widgets that have height
if self.is_sensitive() and kh:
ctx.save()
ctx.translate(ss, ss)
ctx.rotate(angle)
self.draw_points(ctx, self.knobshape)
ctx.close_path()
ctx.restore()
ctx.set_source_rgba(0,0,0,0.3)
ctx.fill()
if self.legend in (LEGEND_LED_SCALE, LEGEND_LED_DOTS):
ch,cl,cs = self.legend_hls
n = ps2*(kh-1)
ctx.save()
ctx.set_line_cap(cairo.LINE_CAP_ROUND)
ctx.set_source_rgb(*hls_to_rgb(ch,cl*0.2,cs))
ctx.set_line_width(lsize)
ctx.arc(0.0, 0.0, 0.5+ps2+n*0.5, startangle, startangle+self.angle)
ctx.stroke()
ctx.set_source_rgb(*hls_to_rgb(ch,cl,cs))
if self.legend == LEGEND_LED_SCALE:
ctx.set_line_width(lsize-ps2*2)
ctx.arc(0.0, 0.0, 0.5+ps2+n*0.5, startangle, angle)
ctx.stroke()
elif self.legend == LEGEND_LED_DOTS:
dots = self.segments
dsize = lsize-ps2*2
seg = self.angle/dots
endangle = startangle + self.angle
for i in xrange(dots):
s = float(i)/(dots-1)
a = startangle + self.angle*s
if ((a-seg*0.5) > angle) or (angle == startangle):
break
ctx.save()
ctx.rotate(a)
r = dsize*0.5
if self.lscale:
r = max(r*s,ps2)
ctx.arc(0.5+ps2+n*0.5, 0.0, r, 0.0, 2*pi)
ctx.fill()
ctx.restore()
ctx.restore()
pat = cairo.LinearGradient(-0.5, -0.5, 0.5, 0.5)
pat.add_color_stop_rgb(1.0, 0.2,0.2,0.2)
pat.add_color_stop_rgb(0.0, 0.3,0.3,0.3)
ctx.set_source(pat)
ctx.rotate(angle)
self.draw_points(ctx, self.knobshape)
ctx.close_path()
ctx.fill_preserve()
ctx.set_source_rgba(0.1,0.1,0.1,1)
ctx.save()
ctx.identity_matrix()
ctx.set_line_width(1.0)
ctx.stroke()
ctx.restore()
ctx.arc(0.0, 0.0, 0.5-self.gd, 0.0, pi*2.0)
ctx.set_source_rgb(*hls_to_rgb(self.fg_hls[0], max(self.fg_hls[1]*0.4,0.0), self.fg_hls[2]))
ctx.fill()
ctx.arc(0.0, 0.0, 0.5-self.gd-ps, 0.0, pi*2.0)
ctx.set_source_rgb(*hls_to_rgb(self.fg_hls[0], min(self.fg_hls[1]*1.2,1.0), self.fg_hls[2]))
ctx.fill()
ctx.arc(0.0, 0.0, 0.5-self.gd-(2*ps), 0.0, pi*2.0)
ctx.set_source_rgb(*hls_to_rgb(*self.fg_hls))
ctx.fill()
# dont draw cap for insensitive widgets
if not self.is_sensitive():
return
#~ ctx.set_line_cap(cairo.LINE_CAP_ROUND)
#~ ctx.move_to(0.5-0.3-self.gd-ps, 0.0)
#~ ctx.line_to(0.5-self.gd-ps*5, 0.0)
if self.marker == MARKER_LINE:
ctx.set_line_cap(cairo.LINE_CAP_BUTT)
ctx.move_to(0.5-0.3-self.gd-ps, 0.0)
ctx.line_to(0.5-self.gd-ps, 0.0)
ctx.save()
ctx.identity_matrix()
ctx.translate(0.5,0.5)
ctx.set_line_width(5)
ctx.set_source_rgb(*hls_to_rgb(self.fg_hls[0], min(self.fg_hls[1]*1.2,1.0), self.fg_hls[2]))
ctx.stroke_preserve()
ctx.set_line_width(3)
ctx.set_source_rgb(*hls_to_rgb(self.fg_hls[0], max(self.fg_hls[1]*0.4,0.0), self.fg_hls[2]))
ctx.stroke()
ctx.restore()
elif self.marker == MARKER_DOT:
ctx.arc(0.5-0.05-self.gd-ps*5, 0.0, 0.05, 0.0, 2*pi)
ctx.save()
ctx.identity_matrix()
ctx.set_source_rgb(*hls_to_rgb(self.fg_hls[0], min(self.fg_hls[1]*1.2,1.0), self.fg_hls[2]))
ctx.stroke_preserve()
ctx.set_line_width(1)
ctx.set_source_rgb(*hls_to_rgb(self.fg_hls[0], max(self.fg_hls[1]*0.4,0.0), self.fg_hls[2]))
ctx.fill()
ctx.restore()
elif self.marker == MARKER_ARROW:
ctx.set_line_cap(cairo.LINE_CAP_BUTT)
ctx.move_to(0.5-0.3-self.gd-ps, 0.1)
ctx.line_to(0.5-0.1-self.gd-ps, 0.0)
ctx.line_to(0.5-0.3-self.gd-ps, -0.1)
ctx.close_path()
ctx.save()
ctx.identity_matrix()
#~ ctx.set_source_rgb(*hls_to_rgb(self.fg_hls[0], min(self.fg_hls[1]*1.2,1.0), self.fg_hls[2]))
#~ ctx.stroke_preserve()
ctx.set_line_width(1)
ctx.set_source_rgb(*hls_to_rgb(self.fg_hls[0], max(self.fg_hls[1]*0.4,0.0), self.fg_hls[2]))
ctx.fill()
ctx.restore()
def refresh(self):
rect = self.get_allocation()
if self.window:
self.window.invalidate_rect(rect, False)
return True
def on_expose(self, widget, event):
self.context = self.window.cairo_create()
self.draw(self.context)
return False
class filter_band:
def __init__(self):
self.fsamp = 48e3
def set_params(self, freq, bandw, gain):
freq_ratio = freq / self.fsamp
gain2 = pow(10.0, 0.05 * gain)
b = 7 * bandw * freq_ratio / sqrt(gain2)
self.gn = 0.5 * (gain2 - 1)
self.v1 = -cos(2 * pi * freq_ratio)
self.v2 = (1 - b) / (1 + b)
self.v1 *= (1 + self.v2)
self.gn *= (1 - self.v2)
def get_response(self, freq):
w = 2 * pi * (freq / self.fsamp)
c1 = cos(w)
s1 = sin(w)
c2 = cos(2 * w)
s2 = sin(2 * w)
x = c2 + self.v1 * c1 + self.v2
y = s2 + self.v1 * s1
t1 = hypot(x, y)
x += self.gn * (c2 - 1)
y += self.gn * s2
t2 = hypot(x, y)
#return t2 / t1
return 20 * log10(t2 / t1)
class frequency_response(gtk.DrawingArea):
def __init__(self):
gtk.DrawingArea.__init__(self)
self.connect("expose-event", self.on_expose)
self.connect("size-request", self.on_size_request)
self.connect("size_allocate", self.on_size_allocate)
self.color_bg = gtk.gdk.Color(0,0,0)
self.color_value = gtk.gdk.Color(int(65535 * 0.8), int(65535 * 0.7), 0)
self.color_mark = gtk.gdk.Color(int(65535 * 0.3), int(65535 * 0.3), int(65535 * 0.3))
self.color_sum = gtk.gdk.Color(int(65535 * 1.0), int(65535 * 1.0), int(65535 * 1.0))
self.width = 0
self.height = 0
self.margin = 10
self.db_range = 30
self.master_gain = 0.0
self.master_enabled = False
self.filters = {}
def on_expose(self, widget, event):
cairo_ctx = widget.window.cairo_create()
# set a clip region for the expose event
cairo_ctx.rectangle(event.area.x, event.area.y, event.area.width, event.area.height)
cairo_ctx.clip()
self.draw(cairo_ctx)
return False
def on_size_allocate(self, widget, allocation):
#print allocation.x, allocation.y, allocation.width, allocation.height
self.width = float(allocation.width)
self.height = float(allocation.height)
self.font_size = 10
def on_size_request(self, widget, requisition):
#print "size-request, %u x %u" % (requisition.width, requisition.height)
requisition.width = 150
requisition.height = 150
return
def invalidate_all(self):
self.queue_draw_area(0, 0, int(self.width), int(self.height))
def get_x(self, hz):
width = self.width - 3.5 * self.margin
#x = self.margin + width * (hz - 20) / (20000 - 20)
x = 2.5 * self.margin + width * log(hz / 20.0, 1000.0)
#print x
return x
def get_freq(self, x):
width = self.width - 3.5 * self.margin
return 20 * pow(1000, (x - 2.5 * self.margin) / width)
def get_y(self, db):
height = self.height - 2.5 * self.margin
y = self.margin + height * (self.db_range - db) / (self.db_range * 2)
#print y
return y
def draw_db_grid(self, cairo_ctx, db):
x = self.get_x(20)
y = self.get_y(db)
cairo_ctx.move_to(x, y)
cairo_ctx.line_to(self.get_x(20000), y)
if db % 10 == 0:
x -= 20
y += 3
cairo_ctx.move_to(x, y)
label = "%+d" % db
if db == 0:
label = " " + label
cairo_ctx.show_text(label)
cairo_ctx.stroke()
def invalidate_all(self):
self.queue_draw_area(0, 0, int(self.width), int(self.height))
def draw(self, cairo_ctx):
cairo_ctx.select_font_face("Fixed")
cairo_ctx.set_source_color(self.color_bg)
cairo_ctx.rectangle(0, 0, self.width, self.height)
cairo_ctx.fill()
cairo_ctx.set_source_color(self.color_mark)
cairo_ctx.set_line_width(1);
for hz in range(20, 101, 10) + range(100, 1001, 100) + range(1000, 10001, 1000) + range(10000, 20001, 10000):
if hz >= 10000:
label = "%dk" % int(hz / 1000)
elif hz >= 1000:
label = "%dk" % int(hz / 1000)
else:
label = "%d" % int(hz)
first_digit = int(label[0])
if first_digit > 5 or (first_digit > 3 and (len(label) == 3)):
label = None
x = self.get_x(hz)
cairo_ctx.move_to(x, self.get_y(self.db_range))
y = self.get_y(-self.db_range)
cairo_ctx.line_to(x, y)
if label:
y += 10
if hz == 20000:
x -= 15
elif hz != 20:
x -= 3
cairo_ctx.move_to(x, y)
cairo_ctx.show_text(label)
cairo_ctx.stroke()
for db in range(0, self.db_range + 1, 5):
self.draw_db_grid(cairo_ctx, db)
if db != 0:
self.draw_db_grid(cairo_ctx, -db)
curves = [[x, {}, self.master_gain, self.get_freq(x)] for x in range(int(self.get_x(20)), int(self.get_x(20e3)))]
#print repr(curves)
# calculate filter responses
for label, filter in self.filters.items():
if not filter.enabled:
continue
for point in curves:
db = filter.get_response(point[3])
point[1][label] = [self.get_y(db), db]
# calculate sum curve
for point in curves:
for label, filter_point in point[1].items():
point[2] += filter_point[1]
#print point
# draw filter curves
for label, filter in self.filters.items():
if not filter.enabled:
continue
cairo_ctx.set_source_color(filter.color)
cairo_ctx.move_to(curves[0][0], curves[0][1][label][0])
for point in curves:
cairo_ctx.line_to(point[0], point[1][label][0])
cairo_ctx.stroke()
if self.master_enabled:
# draw sum curve
cairo_ctx.set_source_color(self.color_sum)
cairo_ctx.set_line_width(2);
cairo_ctx.move_to(curves[0][0], self.get_y(curves[0][2]))
for point in curves:
cairo_ctx.line_to(point[0], self.get_y(point[2]))
cairo_ctx.stroke()
# draw base point markers
for label, filter in self.filters.items():
if not filter.enabled:
continue
cairo_ctx.set_source_color(self.color_value)
x = self.get_x(filter.adj_hz.value)
y = self.get_y(filter.adj_db.value)
cairo_ctx.move_to(x, y)
cairo_ctx.show_text(label)
cairo_ctx.stroke()
def add_filter(self, label, adj_hz, adj_db, adj_bw, color):
#print "filter %s added (%.2f Hz, %.2f dB, %.2f bw)" % (label, adj_hz.value, adj_db.value, adj_bw.value)
filter = filter_band()
filter.enabled = False
filter.label = label
filter.color = color
filter.set_params(adj_hz.value, adj_bw.value, adj_db.value)
adj_hz.filter = filter
adj_db.filter = filter
adj_bw.filter = filter
filter.adj_hz = adj_hz
filter.adj_db = adj_db
filter.adj_bw = adj_bw
adj_hz.connect("value-changed", self.on_value_change_request)
adj_db.connect("value-changed", self.on_value_change_request)
adj_bw.connect("value-changed", self.on_value_change_request)
self.filters[label] = filter
def enable_filter(self, label):
filter = self.filters[label]
#print "filter %s enabled (%.2f Hz, %.2f dB, %.2f bw)" % (label, filter.adj_hz.value, filter.adj_db.value, filter.adj_bw.value)
filter.enabled = True
self.invalidate_all()
def disable_filter(self, label):
filter = self.filters[label]
#print "filter %s disabled (%.2f Hz, %.2f dB, %.2f bw)" % (label, filter.adj_hz.value, filter.adj_db.value, filter.adj_bw.value)
filter.enabled = False
self.invalidate_all()
def on_value_change_request(self, adj):
#print "adj changed"
adj.filter.set_params(adj.filter.adj_hz.value, adj.filter.adj_bw.value, adj.filter.adj_db.value)
self.invalidate_all()
def master_enable(self):
self.master_enabled = True;
self.invalidate_all()
def master_disable(self):
self.master_enabled = False;
self.invalidate_all()
def set_master_gain(self, gain):
self.master_gain = gain;
self.invalidate_all()
class filter_ui:
def __init__(self, argv):
self.fake = len(argv) == 1
if self.fake:
self.plugin_uri = self.human_id = "fake"
self.bundle_path = "."
self.shown = False
else:
#print repr(argv)
self.plugin_uri = argv[1]
self.bundle_path = argv[2]
self.human_id = argv[3]
self.recv_pipe_fd = int(argv[4])
self.send_pipe_fd = int(argv[5])
oldflags = fcntl.fcntl(self.recv_pipe_fd, fcntl.F_GETFL)
fcntl.fcntl(self.recv_pipe_fd, fcntl.F_SETFL, oldflags | os.O_NONBLOCK)
self.recv_pipe = os.fdopen(self.recv_pipe_fd, 'r')
self.send_pipe = os.fdopen(self.send_pipe_fd, 'w')
if self.plugin_uri == "http://nedko.aranaudov.org/soft/filter/2/mono":
self.port_base = 2
elif self.plugin_uri == "http://nedko.aranaudov.org/soft/filter/2/stereo":
self.port_base = 4
elif self.plugin_uri == "fake":
self.port_base = 0
else:
return
self.lv2logo = gtk.gdk.pixbuf_new_from_file(self.bundle_path + "/lv2logo.png")
self.window = gtk.Window(gtk.WINDOW_TOPLEVEL)
#self.window.set_size_request(600, 400)
self.window.set_title("%s (4-band parametric filter)" % self.human_id)
self.window.set_role("plugin_ui")
self.top_vbox = gtk.VBox()
self.top_vbox.set_spacing(10)
align = gtk.Alignment(0.5, 0.5, 1.0, 1.0)
align.set_padding(10, 10, 10, 10)
align.add(self.top_vbox)
self.window.add(align)
self.fr = frequency_response()
self.fr.set_size_request(400, 200)
frame = gtk.Frame()
frame.set_shadow_type(gtk.SHADOW_ETCHED_OUT)
frame.add(self.fr)
self.top_vbox.pack_start(frame, True, True)
self.param_hbox = gtk.HBox()
self.top_vbox.pack_start(self.param_hbox)
self.param_hbox.set_spacing(10)
self.initator = False
self.ports = []
misc_box = gtk.VBox()
misc_box.set_spacing(5)
master_frame = gtk.Frame("Master")
master_frame.set_label_align(0.5, 0.5)
master_box = gtk.VBox()
master_box.set_spacing(5)
port = {'index': 0, 'name': 'Active', 'type': 'toggle'}
self.ports.append(port)
self.add_param_box(master_box, self.create_toggle_box(port))
port = {'index': 1, 'name': 'Gain', 'type': 'knob', 'min': -20.0, 'max': 20.0, 'unit': 'dB', 'log': False}
self.ports.append(port)
self.add_param_box(master_box, self.create_knob_box(port))
master_frame.add(master_box)
misc_box.pack_start(master_frame, False, False)
#logo = gtk.Image()
#logo.set_from_pixbuf(self.lv2logo)
#misc_box.pack_start(logo, True, True)
button_box = gtk.VBox()
button = gtk.Button(stock=gtk.STOCK_ABOUT)
button.connect("clicked", self.on_about)
button_box.pack_start(button)
button = gtk.Button(stock=gtk.STOCK_CLOSE)
button.connect("clicked", self.on_window_closed)
button_box.pack_start(button)
align = gtk.Alignment(0.5, 1.0, 1.0, 0.0)
align.add(button_box)
misc_box.pack_start(align, True, True)
band_parameters = [
{'name': 'Active', 'type': 'toggle'},
{'name': 'Frequency', 'type': 'knob', 'unit': 'Hz', 'log': True},
{'name': 'Bandwidth', 'type': 'knob', 'min': 0.125, 'max': 8.0, 'unit': '', 'log': True},
{'name': 'Gain', 'type': 'knob', 'min': -20.0, 'max': 20.0, 'unit': 'dB', 'log': False}]
freq_min = [ 20.0, 40.0, 100.0, 200.0]
freq_max = [2000.0, 4000.0, 10000.0, 20000.0]
port_index = 2
filter_colors = [gtk.gdk.Color(int(65535 * 1.0), int(65535 * 0.6), int(65535 * 0.0)),
gtk.gdk.Color(int(65535 * 0.6), int(65535 * 1.0), int(65535 * 0.6)),
gtk.gdk.Color(int(65535 * 0.0), int(65535 * 0.6), int(65535 * 1.0)),
gtk.gdk.Color(int(65535 * 0.9), int(65535 * 0.0), int(65535 * 0.5))]
for i in [0, 1, 2, 3]:
band_frame = gtk.Frame("Band %d" % (i + 1))
band_frame.set_label_align(0.5, 0.5)
band_box = gtk.VBox()
band_box.set_spacing(5)
for parameter in band_parameters:
port = parameter.copy()
port['index'] = port_index
port_index += 1
if port['name'] == 'Frequency':
port['min'] = freq_min[i]
port['max'] = freq_max[i]
self.ports.append(port)
#param_box.set_spacing(5)
if port['type'] == 'knob':
self.add_param_box(band_box, self.create_knob_box(port))
elif port['type'] == 'toggle':
self.add_param_box(band_box, self.create_toggle_box(port))
self.fr.add_filter(
str(i + 1),
self.ports[port_index - 3]['adj'], # frequency
self.ports[port_index - 1]['adj'], # gain
self.ports[port_index - 2]['adj'], # bandwidth
filter_colors[i])
band_frame.add(band_box)
self.param_hbox.pack_start(band_frame, True, True)
self.param_hbox.pack_start(misc_box, True, True)
self.initator = True
def on_about(self, widget):
about = gtk.AboutDialog()
about.set_transient_for(self.window)
about.set_name("4-band parametric filter")
#about.set_website(program_data['website'])
about.set_authors(["Nedko Arnaudov - LV2 plugin and GUI", 'Fons Adriaensen - DSP code'])
about.set_artists(["LV2 logo has been designed by Thorsten Wilms, based on a concept from Peter Shorthose."])
about.set_logo(self.lv2logo)
about.show()
about.run()
about.hide()
def create_knob_box(self, port):
param_box = gtk.VBox()
step = (port['max'] - port['min']) / 100
adj = SmartAdjustment(port['log'], port['min'], port['min'], port['max'], step, step * 20)
adj.port = port
port['adj'] = adj
adj.connect("value-changed", self.on_adj_value_changed)
knob = Knob()
knob.set_adjustment(adj)
align = gtk.Alignment(0.5, 0.5, 0, 0)
align.set_padding(0, 0, 20, 20)
align.add(knob)
param_box.pack_start(align, False)
adj.label = gtk.Label(self.get_adj_value_text(adj)[0])
param_box.pack_start(adj.label, False)
#spin = gtk.SpinButton(adj, 0.0, 2)
#param_box.pack_start(spin, False)
label = gtk.Label(port['name'])
param_box.pack_start(label, False)
return param_box
def create_toggle_box(self, port):
param_box = gtk.VBox()
button = gtk.CheckButton(port['name'])
button.port = port
port['widget'] = button
button.connect("toggled", self.on_button_toggled)
align = gtk.Alignment(0.5, 0.5, 0, 0)
align.add(button)
param_box.pack_start(align, False)
return param_box
def add_param_box(self, container, param_box):
align = gtk.Alignment(0.5, 0.5, 1.0, 1.0)
align.set_padding(10, 10, 10, 10)
align.add(param_box)
container.pack_start(align, True)
def get_adj_value_text(self, adj):
value = adj.get_value()
if value >= 10000:
format = "%.0f"
elif value >= 1000:
format = "%.1f"
else:
format = "%.2f"
text = format % value
unit = adj.port['unit']
if unit:
text += " " + unit
return value, text
def on_adj_value_changed(self, adj):
value, text = self.get_adj_value_text(adj)
adj.label.set_text(text)
if adj.port['index'] == 1:
#print "Master gain = %.2f dB" % adj.get_value()
self.fr.set_master_gain(adj.get_value())
if self.initator:
#print adj.port, adj.get_value()
self.send_port_value(adj.port['index'] + self.port_base, value)
def on_button_toggled(self, widget):
port_index = widget.port['index']
band_no = (port_index - 2) / 4 + 1
if widget.get_active():
value = 1.0
if band_no > 0:
self.fr.enable_filter(str(band_no))
else:
self.fr.master_enable()
else:
value = 0.0
if band_no > 0:
self.fr.disable_filter(str(band_no))
else:
self.fr.master_disable()
if self.initator:
self.send_port_value(port_index + self.port_base, value)
def send(self, lines):
if self.fake:
return
for line in lines:
#print 'send: "' + line + '"'
self.send_pipe.write(line + "\n")
self.send_pipe.flush()
def send_exiting(self):
self.send(["exiting"])
def send_port_value(self, port_index, value):
self.send(["port_value", str(port_index), "%.10f" % value])
def send_hi(self):
self.send([""]) # send empty line (just newline char)
def recv_line(self):
return self.recv_pipe.readline().strip()
def recv_command(self):
try:
msg = self.recv_line()
if msg == "port_value":
port_index = int(self.recv_line())
port_value = float(self.recv_line())
#print "port_value_change recevied: %d %f" % (port_index, port_value)
self.on_port_value_changed(port_index, port_value)
elif msg == "show":
self.on_show()
elif msg == "hide":
self.on_hide()
elif msg == "quit":
self.on_quit()
else:
print 'unknown message: "' + msg + '"'
return True
except IOError:
return False
def on_recv(self, fd, cond):
#print "on_recv"
if cond == gobject.IO_HUP:
gtk.main_quit()
return False
while True:
if not self.recv_command():
break
return True
def run(self):
self.window.connect("destroy", self.on_window_closed)
if self.fake:
if not self.shown:
self.shown = True
self.on_show()
else:
self.send_hi()
gobject.io_add_watch(self.recv_pipe_fd, gobject.IO_IN | gobject.IO_HUP, self.on_recv)
gtk.main()
def on_port_value_changed(self, port_index, port_value):
#print "port %d set to %f" % (port_index, port_value)
port_index -= self.port_base
port = self.ports[port_index]
#print repr(port)
port_type = port['type']
if port_type == 'knob':
self.initator = False
port['adj'].set_value(port_value)
self.initator = True
elif port_type == 'toggle':
if port_value > 0.0:
toggled = True
else:
toggled = False
self.initator = False
port['widget'].set_active(toggled)
self.initator = True
def on_show(self):
self.window.show_all()
def on_hide(self):
self.window.hide_all()
def on_quit(self):
gtk.main_quit()
def on_window_closed(self, arg):
self.send_exiting()
gtk.main_quit()
def main():
filter_ui(sys.argv).run()
#print "main done"
if __name__ == '__main__':
main()
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