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#!/usr/bin/env python3
import re
import sys
from typing import Any
import pyqtgraph as pg # type: ignore
from PyQt6 import QtWidgets # type: ignore
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 Event:
name: str
vals: list[tuple[float, float]] = []
type: str
marker = ""
class G:
events: dict[str, Event] = {}
start = 0.0
markers = ["o", "s", "t", "d"]
curveno: dict[Any, int] = {}
sevents: list[Event] = []
def find_marker():
if len(G.markers) == 0:
return "o"
m = G.markers[0]
G.markers = G.markers[1:]
return m
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 mk_color(t):
return pg.mkColor(int(t[0] * 255), int(t[1] * 255), int(t[2] * 255))
SCALE = 1e6 # microseconds to seconds
with open(filename) as file:
for line in file:
line = line.split("#")[0].strip()
if not line:
continue
ts_str, event = line.split(" ", 1)
ts = int(ts_str) / SCALE
if G.start is None:
G.start = ts
ts -= G.start
match event.split(" ", 1):
case ["start", name]:
e = get_event(name, "event")
e.vals.append((ts, 0))
e.vals.append((ts, 1))
case ["end", name]:
e = get_event(name, "event")
e.vals.append((ts, 1))
e.vals.append((ts, 0))
case ["value", rest]:
val, name = rest.split(" ", 1)
e = get_event(name, "value")
e.vals.append((ts, float(val)))
case ["event-timed", rest]:
val, name = rest.split(" ", 1)
e = get_event(name, "event-signal")
e.vals.append((int(val) / SCALE - G.start, 1))
case ["range-timed", rest]:
ts1_str, ts2_str, name = rest.split(" ", 2)
ts1 = int(ts1_str) / SCALE - G.start
ts2 = int(ts2_str) / 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))
case ["value-timed", rest]:
tsval, val, name = rest.split(" ", 2)
e = get_event(name, "value")
e.vals.append((int(tsval) / SCALE - G.start, float(val)))
case ["signal", name]:
e = get_event(name, "event-signal")
e.vals.append((ts, 1))
case _:
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 = QtWidgets.QApplication([])
win = pg.GraphicsLayoutWidget()
win.show()
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]) # type: ignore
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 cur not in G.curveno:
G.curveno[cur] = 0
args = {"name": e.name,"antialias":True}
color = mk_color(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
cur.plot(*zip(*e.vals), **args) # type: ignore
app.exec()
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