/
stats.py
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/
stats.py
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#! /usr/bin/python
# webcam-lcd - A Nifty PIL based driver for displaying webcamd stats with the Adafruit 128x32 PiOLED
# (https://www.adafruit.com/product/3527)
#
# webcamd is a high performance MJPEG HTTP server and can be found here: https://github.com/synman/webcamd
#
# Written by Shell M. Shrader <shell@shellware.com>
# Original Source / Licence reference: (https://github.com/adafruit/Adafruit_CircuitPython_SSD1306/blob/main/examples/ssd1306_stats.py)
#
import time
import datetime
import subprocess
import busio
import adafruit_ssd1306
import requests
from PIL import Image, ImageDraw, ImageFont
from board import SCL, SDA
# Create the I2C interface.
i2c = busio.I2C(SCL, SDA)
# Create the SSD1306 OLED class.
# The first two parameters are the pixel width and pixel height. Change these
# to the right size for your display!
disp = adafruit_ssd1306.SSD1306_I2C(128, 32, i2c)
# Clear display.
disp.fill(0)
disp.show()
# Create blank image for drawing.
# Make sure to create image with mode '1' for 1-bit color.
width = disp.width
height = disp.height
# common box height for our graphs
boxH = 8
splashImage = Image.new("1", (width, height))
splashDraw = ImageDraw.Draw(splashImage)
# Draw a black filled box to clear the image.
# splashDraw.rectangle((0, 0, width, height), outline=0, fill=0)
# Load fonts
# font = ImageFont.load_default()
headerFont = ImageFont.truetype('/home/pi/lcdstats/source-code-pro/SourceCodePro-Regular.ttf', 8)
valueFont = ImageFont.truetype('/home/pi/lcdstats/source-code-pro/SourceCodePro-Regular.ttf', 9)
splashFont = ImageFont.truetype('/home/pi/lcdstats/source-code-pro/SourceCodePro-Regular.ttf', 12)
# headerFont = ImageFont.truetype('/home/pi/lcdstats/misc-fixed.ttf', 9)
# valueFont = ImageFont.truetype('/home/pi/lcdstats/misc-fixed.ttf', 10)
# splashFont = ImageFont.truetype('/home/pi/lcdstats/misc-fixed.ttf', 12)
s1 = "webcamd-lcd"
s2 = "------------"
s3 = "By Shellware"
s1w, s1h = splashFont.getsize(s1)
s2w, s2h = valueFont.getsize(s2)
s3w, s3h = valueFont.getsize(s3)
splashDraw.text((width / 2 - s1w / 2, 0), s1, font=splashFont, fill=255)
splashDraw.text((width / 2 - s2w / 2, s1h + 1), s2, font=valueFont, fill=255)
splashDraw.text((width / 2 - s3w / 2, s1h + s2h + 2), s3, font=valueFont, fill=255)
disp.image(splashImage)
disp.show()
time.sleep(10)
cmd = "nproc"
cpus = int(subprocess.check_output(cmd, shell=True).decode("utf-8").replace("\n", ""))
image = Image.new("1", (height, width))
final = Image.new("1", (width, height))
draw = ImageDraw.Draw(image)
finalDraw = ImageDraw.Draw(final)
cmd = "hostname"
hostname = subprocess.check_output(cmd, shell=True).decode("utf-8").replace("\n", "")
sessions = -1
url = 'http://localhost:8080/?info'
while True:
# cmd = "curl 'http://localhost:8080/?info' -s | jq -r '.config.port, .stats.encodeFps, .stats.sessionCount, .stats.avgStreamFps'"
# webcam = subprocess.check_output(cmd, shell=True).decode("utf-8")
# stats = webcam.replace("\r", "").split("\n")
try:
resp = requests.get(url=url)
if resp.status_code != 200:
print("%s: unable to query webcamd: response code = [%d]" % (datetime.datetime.now(), resp.status_code), flush=True)
time.sleep(5)
continue
data = resp.json()
encodeFps = data["stats"]["encodeFps"]
streamFps = data["stats"]["avgStreamFps"]
port = data["config"]["port"]
# dim the screen if we don't have any active cients
if sessions != 0 and data["stats"]["sessionCount"] == 0:
disp.fill(0)
disp.show()
sessions = data["stats"]["sessionCount"]
if sessions == 0:
time.sleep(10)
continue
except Exception as e:
print("%s: unable to query webcamd: [%s]" % (datetime.datetime.now(), e), flush=True)
sessions = 0
disp.fill(0)
disp.show()
time.sleep(5)
continue
cmd = 'cut -f 1 -d " " /proc/loadavg'
load = float(subprocess.check_output(cmd, shell=True).decode("utf-8"))
cpu = load / cpus * 100.
if cpu > 100: cpu = 100
# Draw a black filled box to clear the image.
draw.rectangle((0, 0, height, width), outline=0, fill=0)
cH = "CPU"
cHw, cHh = headerFont.getsize(cH)
top = 0
draw.text((height / 2 - cHw / 2, top), cH, font=headerFont, fill=255, spacing=4)
top = cHh + 1
draw.rectangle((0, top, 31, top + boxH), outline=255, fill=0)
draw.rectangle((0, top, int(31 * (cpu / 100)), top + boxH), outline=255, fill=255)
cV = "%.0f %%" % cpu
cVw, cVh = valueFont.getsize(cV)
top = top + boxH + 2
draw.text((height / 2 - cVw / 2, top), cV, font=valueFont, fill=255)
cH = "ENCODE"
cHw, cHh = headerFont.getsize(cH)
top = top + cVh + 6
draw.text((height / 2 - cHw / 2, top), cH, font=headerFont, fill=255, spacing=4)
top = top + cHh + 1
draw.rectangle((0, top, 31, top + boxH), outline=255, fill=0)
draw.rectangle((0, top, int(31 * (encodeFps / 30)), top + boxH), outline=255, fill=255)
cV = "%.0f FPS" % encodeFps
cVw, cVh = valueFont.getsize(cV)
top = top + boxH + 2
draw.text((height / 2 - cVw / 2, top), cV, font=valueFont, fill=255)
cH = "STREAM"
cHw, cHh = headerFont.getsize(cH)
top = top + cVh + 6
draw.text((height / 2 - cHw / 2, top), cH, font=headerFont, fill=255, spacing=4)
top = top + cHh + 1
draw.rectangle((0, top, 31, top + boxH), outline=255, fill=0)
draw.rectangle((0, top, int(31 * (streamFps / 30)), top + boxH), outline=255, fill=255)
cV = "%.0f FPS" % streamFps
cVw, cVh = valueFont.getsize(cV)
top = top + boxH + 2
draw.text((height / 2 - cVw / 2, top), cV, font=valueFont, fill=255)
cH = "ACTIVE"
cHw, cHh = headerFont.getsize(cH)
top = top + cVh + 6
draw.text((height / 2 - cHw / 2, top), cH, font=headerFont, fill=255, spacing=4)
cV = "%d" % sessions
cVw, cVh = splashFont.getsize(cV)
top = top + cHh + 2
draw.text((height / 2 - cVw / 2, top), cV, font=splashFont, fill=255)
rot = image.crop((0, 0, height, top + cVh)).rotate(90, expand=1)
sx, sy = rot.size
finalDraw.rectangle((0, 0, width, height), outline=0, fill=0)
final.paste(rot,(0, 0, sx, sy), rot)
# Display image.
disp.image(final)
disp.show()
# print("---------------------------------------")
# print("http://%s:%d" % (hostname, port), flush=False)
# print("CPU @ %.2f%% busy" % cpu, flush=False)
# print("Encoding @ %.1ffps" % encodeFps, flush=False)
# print("%d sessions @ avg %.1ffps" % (sessions, streamFps), flush=True)
time.sleep(5)