sound.py

import cv2
import mediapipe as mp
from math import hypot
from ctypes import cast, POINTER
from comtypes import CLSCTX_ALL
from pycaw.pycaw import AudioUtilities, IAudioEndpointVolume
import numpy as np

def volume(): 

 cap = cv2.VideoCapture(0) 
 
 mpHands = mp.solutions.hands 
 hands = mpHands.Hands()   
 mpDraw = mp.solutions.drawing_utils
 

 devices = AudioUtilities.GetSpeakers()
 interface = devices.Activate(IAudioEndpointVolume._iid_, CLSCTX_ALL, None)
 volume = cast(interface, POINTER(IAudioEndpointVolume))
 volbar=400
 volper=0
 
 volMin,volMax = volume.GetVolumeRange()[:2]
 
 while True:
    success,img = cap.read() 
    imgRGB = cv2.cvtColor(img,cv2.COLOR_BGR2RGB) 
    

    results = hands.process(imgRGB)
 
    lmList = [] 
    if results.multi_hand_landmarks: 
        for handlandmark in results.multi_hand_landmarks:
            for id,lm in enumerate(handlandmark.landmark): 

                h,w,_ = img.shape
                cx,cy = int(lm.x*w),int(lm.y*h)
                lmList.append([id,cx,cy]) 
            mpDraw.draw_landmarks(img,handlandmark,mpHands.HAND_CONNECTIONS)
    
    if lmList != []:

        x1,y1 = lmList[4][1],lmList[4][2]  
        x2,y2 = lmList[8][1],lmList[8][2]  
        cv2.circle(img,(x1,y1),13,(255,0,0),cv2.FILLED) 
        cv2.circle(img,(x2,y2),13,(255,0,0),cv2.FILLED) 
        cv2.line(img,(x1,y1),(x2,y2),(255,0,0),3)  
 
        length = hypot(x2-x1,y2-y1) 

        vol = np.interp(length,[0,200],[volMin,volMax]) # you can chage length as you wan't [0 , change] 
        volbar=np.interp(length,[0,200],[400,150]) # Same length [0 , change] 
        volper=np.interp(length,[0,200],[0,100]) #Same length [0 , change] 
        
        volume.SetMasterVolumeLevel(vol, None)
        

        cv2.rectangle(img,(50,150),(85,400),(0,0,255),4)
        cv2.rectangle(img,(50,int(volbar)),(85,400),(0,0,255),cv2.FILLED)
        cv2.putText(img,f"{int(volper)}%",(10,40),cv2.FONT_ITALIC,1,(0, 255, 98),3)
    
    cv2.imshow('Image',img) 
    if cv2.waitKey(1) & 0xff==ord(' '):
        break
        
 cap.release()       
 cv2.destroyAllWindows() 
'''CLICK SPACE BAR IN ORDER TO STOP THE PROGRAM'''