VolumeControl.py

import cv2
import mediapipe as mp
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

wCam, hCam = 648, 488



cap = cv2.VideoCapture(0)
cap.set(3, wCam)
cap.set(4, hCam)
pTime=0

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()
volume.SetMasterVolumeLevel(0, None)

minVol = volRange[0]
maxVol = volRange[1]

vol=0


while True:
    success, img = cap.read()
    img=detector.findHands(img)

    lmList = detector.findPositions(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), 7, (255,0,255), cv2.FILLED)
        cv2.circle(img, (x2, y2), 7, (255, 0, 255), cv2.FILLED)
        cv2.line(img, (x1,y1), (x2,y2), (255,0,0), 3)
        cv2.circle(img, (cx, cy), 7, (255, 0, 255), cv2.FILLED)

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

        #27 - 330
        #-96 - 0

        vol = np.interp(length,[27,330],[minVol, maxVol])
        print(vol)
        volume.SetMasterVolumeLevel(vol, None)

        if length<27:
            cv2.circle(img, (cx, cy), 7, (0, 255, 0), cv2.FILLED)


    cv2.rectangle(img, (50,150), (85,400), (0,255,0), 3)
    cv2.rectangle(img, (50, int(vol)), (85, 400), (0, 255, 0), cv2.FILLED)
    cTime = time.time()
    fps = 1/(cTime-pTime)
    pTime = cTime

    cv2.putText(img, f'FPS: {int(fps)}', (40,70), cv2.FONT_HERSHEY_COMPLEX  ,1, (255,0,255),3)

    cv2.imshow("Img", img)
    cv2.waitKey(1)