VolumeHandControl.py

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

# Setting the camera size
wCam, hCam = 640,480

# Setting a variable to capture video from webcam.
cap = cv2.VideoCapture(0)
cap.set(3, wCam)
cap.set(4, hCam)
pTime = 0

detector = htm.handDetector(detectionCon=0.7)

# Initializing
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]

while True:
    success, img = cap.read()
    
    img = detector.findHands(img)
    lmList = detector.findPosition(img, draw = False)
    if len(lmList) !=0:
        # print(lmList[4], lmList[8])
        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, (255,0,255), cv2.FILLED)

        cv2.circle(img, (x2,y2), 15, (255,0,255), cv2.FILLED)

        cv2.line(img, (x1,y1), (x2,y2), (255,0,255), 3)

        cv2.circle(img, (cx, cy), 15, (255,0,255), cv2.FILLED)

        length = math.hypot(x2-x1, y2-y1)


        # Hand Range 50-300
        # Volume Range -65 - 0
        vol = np.interp(length, [50, 300], [minVol, maxVol])

        print(int(length),vol)

        volume.SetMasterVolumeLevel(vol, None)


        if length<50:
             cv2.circle(img, (cx, cy), 15, (0,255,0), cv2.FILLED)
        

    cTime = time.time()
    fps = 1/(cTime-pTime)
    pTime = cTime

    cv2.putText(img, f'FPS: {int(fps)}',(40,50), cv2.FONT_HERSHEY_COMPLEX, 1, (231, 76, 60), 3)
    cv2.imshow("Img", img)
    cv2.waitKey(1)