main.py

from modules.pycaw import AudioUtilities, IAudioEndpointVolume
from comtypes import CLSCTX_ALL
from ctypes import cast, POINTER
import cv2
import time
import HandTrackingModule as htm
import os
import numpy as np
import math


##########################
WCam, HCam = 640, 480
##########################
cap = cv2.VideoCapture(0)
cap.set(3, WCam)
cap.set(4, HCam)
pTime = 0


print('''

if you want to close the app please close this...

''')

detector = htm.HandDetector(detectionCon=0.7)

devices = AudioUtilities.GetSpeakers()
interface = devices.Activate(
    IAudioEndpointVolume._iid_, CLSCTX_ALL, None)
volume = cast(interface, POINTER(IAudioEndpointVolume))
# volume.GetMute()
# volume.GetMasterVolumeLevel()
volRange = volume.GetVolumeRange()
minVol = volRange[0]
maxVol = volRange[1]
vol = 0
volBar = 400
volPer = 0
while True:
    success, img = cap.read()
    img = detector.findHands(img, draw=False)
    lmList = detector.findPositions(img, draw=False)
    if len(lmList) != 0:
        x1, y1 = lmList[4][1], lmList[4][2]
        x2, y2 = lmList[8][1], lmList[8][2]
        cx, cy = (x1+x2)//2, (y1+y2)//2
        cv2.circle(img, (x1, y1), 15, (0, 0, 255), cv2.FILLED)
        cv2.circle(img, (x2, y2), 15, (0, 0, 255), cv2.FILLED)
        cv2.circle(img, (cx, cy), 15, (0, 0, 255), cv2.FILLED)
        cv2.line(img, (x1, y1), (x2, y2), (0, 0, 255), 2)
        length = math.hypot(x2-x1, y2-y1)
        vol = np.interp(length, [50, 300], [minVol, maxVol])
        volBar = np.interp(length, [50, 300], [400, 150])
        volPer = np.interp(length, [50, 300], [0, 100])
        volume.SetMasterVolumeLevel(vol, None)
        if length < 50:
            cv2.circle(img, (cx, cy), 15, (255, 255, 0), cv2.FILLED)

    cv2.rectangle(img, (50, 150), (85, 400), (0, 255, 0), 3)
    cv2.rectangle(img, (50, int(volBar)), (85, 400), (0, 255, 0), cv2.FILLED)
    cv2.putText(img, f'{int(volPer)}%', (40, 450),
                cv2.FONT_HERSHEY_COMPLEX, 1, (0, 255, 0), 3)

    cTime = time.time()
    fps = 1/(cTime-pTime)
    pTime = cTime
    cv2.putText(img, f'FPS:{int(fps)}', (40, 50),
                cv2.FONT_HERSHEY_COMPLEX, 1, (0, 0, 255), 3)
    cv2.imshow('Image', img)
    cv2.waitKey(1)