VolumeHandControl.py

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

###########################
wCam, hCam = 980, 720
###########################
cap = cv.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 = interface.QueryInterface(IAudioEndpointVolume)
# volume.GetMute()
# volume.GetMasterVolumeLevel()
volRange = volume.GetVolumeRange()

vol=0
volBar = 400
volPer = 0
minVol, maxVol = volRange[0], 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

        cv.circle(img, (x1, y1),15, (255, 0, 255), cv.FILLED)
        cv.circle(img, (x2, y2), 15, (255, 0, 255), cv.FILLED)
        cv.line(img, (x1, y1), (x2, y2), (255, 0, 255), 2)
        cv.circle(img, (cx, cy), 12, (0, 0, 255), cv.FILLED)

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

        vol =np.interp(length, (50, 300), (minVol, maxVol))
        volBar = np.interp(length, (50, 300), (400, 150))
        volPer = np.interp(length, (50, 300), (0, 100))
        print(int(length), vol)

        volume.SetMasterVolumeLevel(vol, None)

        if length < 50:
            cv.circle(img, (cx,cy), 12, (0, 255, 0), cv.FILLED)

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

    cTime = time.time()
    fps = 1 / (cTime - pTime)
    pTime = cTime
    cv.putText(img, f'FPS: {int(fps)}', (40,70), cv.FONT_HERSHEY_TRIPLEX, 1, (255, 0, 0), 3)

    cv.imshow("Image", img)
    cv.waitKey(1)