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#!/usr/bin/env python3
from pyqtgraph.Qt import QtGui, QtCore
import pyqtgraph as pg
import sys
import re
filename = sys.argv[1]
events = ".*"
if len(sys.argv) > 2:
events = sys.argv[2]
event_regex = re.compile(events)
"""
This script is meant to display stats written by mpv --dump-stats=filename.
In general, each line in that file is an event of the form:
<timestamp in microseconds> <text> '#' <comment>
e.g.:
10474959 start flip #cplayer
<text> is what MP_STATS(log, "...") writes. The rest is added by msg.c.
Currently, the following event types are supported:
'signal' <name> singular event
'start' <name> start of the named event
'end' <name> end of the named event
'value' <float> <name> a normal value (as opposed to event)
'event-timed' <ts> <name> singular event at the given timestamp
'value-timed' <ts> <float> <name> a value for an event at the given timestamp
'range-timed' <ts1> <ts2> <name> like start/end, but explicit times
<name> singular event (same as 'signal')
"""
class G:
events = {}
start = None
markers = ["o", "s", "t", "d"]
curveno = {}
def find_marker():
if len(G.markers) == 0:
return "o"
m = G.markers[0]
G.markers = G.markers[1:]
return m
class Event:
pass
def get_event(event, evtype):
if event not in G.events:
e = Event()
e.name = event
e.vals = []
e.type = evtype
e.marker = "o"
if e.type == "event-signal":
e.marker = find_marker()
if not event_regex.match(e.name):
return e
G.events[event] = e
return G.events[event]
colors = [(0.0, 0.5, 0.0), (0.0, 0.0, 1.0), (0.0, 0.0, 0.0), (1.0, 0.0, 0.0), (0.75, 0.75, 0), (0.0, 0.75, 0.75), (0.75, 0, 0.75)]
def mkColor(t):
return pg.mkColor(int(t[0] * 255), int(t[1] * 255), int(t[2] * 255))
SCALE = 1e6 # microseconds to seconds
for line in [line.split("#")[0].strip() for line in open(filename, "r")]:
line = line.strip()
if not line:
continue
ts, event = line.split(" ", 1)
ts = int(ts) / SCALE
if G.start is None:
G.start = ts
ts = ts - G.start
if event.startswith("start "):
e = get_event(event[6:], "event")
e.vals.append((ts, 0))
e.vals.append((ts, 1))
elif event.startswith("end "):
e = get_event(event[4:], "event")
e.vals.append((ts, 1))
e.vals.append((ts, 0))
elif event.startswith("value "):
_, val, name = event.split(" ", 2)
val = float(val)
e = get_event(name, "value")
e.vals.append((ts, val))
elif event.startswith("event-timed "):
_, val, name = event.split(" ", 2)
val = int(val) / SCALE - G.start
e = get_event(name, "event-signal")
e.vals.append((val, 1))
elif event.startswith("range-timed "):
_, ts1, ts2, name = event.split(" ", 3)
ts1 = int(ts1) / SCALE - G.start
ts2 = int(ts2) / SCALE - G.start
e = get_event(name, "event")
e.vals.append((ts1, 0))
e.vals.append((ts1, 1))
e.vals.append((ts2, 1))
e.vals.append((ts2, 0))
elif event.startswith("value-timed "):
_, tsval, val, name = event.split(" ", 3)
tsval = int(tsval) / SCALE - G.start
val = float(val)
e = get_event(name, "value")
e.vals.append((tsval, val))
elif event.startswith("signal "):
name = event.split(" ", 2)[1]
e = get_event(name, "event-signal")
e.vals.append((ts, 1))
else:
e = get_event(event, "event-signal")
e.vals.append((ts, 1))
# deterministically sort them; make sure the legend is sorted too
G.sevents = list(G.events.values())
G.sevents.sort(key=lambda x: x.name)
hasval = False
for e, index in zip(G.sevents, range(len(G.sevents))):
m = len(G.sevents)
if e.type == "value":
hasval = True
else:
e.vals = [(x, y * (m - index) / m) for (x, y) in e.vals]
pg.setConfigOption('background', 'w')
pg.setConfigOption('foreground', 'k')
app = QtGui.QApplication([])
win = pg.GraphicsWindow()
#win.resize(1500, 900)
ax = [None, None]
plots = 2 if hasval else 1
ax[0] = win.addPlot()
if hasval:
win.nextRow()
ax[1] = win.addPlot()
ax[1].setXLink(ax[0])
for cur in ax:
if cur is not None:
cur.addLegend(offset = (-1, 1))
for e in G.sevents:
cur = ax[1 if e.type == "value" else 0]
if not cur in G.curveno:
G.curveno[cur] = 0
args = {'name': e.name,'antialias':True}
color = mkColor(colors[G.curveno[cur] % len(colors)])
if e.type == "event-signal":
args['symbol'] = e.marker
args['symbolBrush'] = pg.mkBrush(color, width=0)
else:
args['pen'] = pg.mkPen(color, width=0)
G.curveno[cur] += 1
n = cur.plot([x for x,y in e.vals], [y for x,y in e.vals], **args)
QtGui.QApplication.instance().exec_()
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