wireless_sound_control.py

import cv2
import mediapipe as mp
import math
import numpy as np
from ctypes import cast, POINTER
from comtypes import CLSCTX_ALL
from pycaw.pycaw import AudioUtilities, IAudioEndpointVolume
devices = AudioUtilities.GetSpeakers()
cap = cv2.VideoCapture(0)
mpHands = mp.solutions.hands
hands = mpHands.Hands()
mpDraw = mp.solutions.drawing_utils
interface = devices.Activate(
    IAudioEndpointVolume._iid_, CLSCTX_ALL, None)
volume = cast(interface, POINTER(IAudioEndpointVolume))

while True:
    success, img = cap.read()
    imgRGB = cv2.cvtColor(img, cv2.COLOR_BGR2RGB)
    results = hands.process(imgRGB)
    #print(results.multi_hand_landmarks)

    if results.multi_hand_landmarks:
         for handLms in results.multi_hand_landmarks:
             lmList = []    
             for id, lm in enumerate(handLms.landmark):
                 #print(id, lm)
                 h , w , c = img.shape
                 cx , cy = int(lm.x*w) , int(lm.y*h)
                 #print(id, cx , cy)
                 lmList.append([id, cx, cy])
                 
             #mpDraw.draw_landmarks(img , handLms , mpHands.HAND_CONNECTIONS)
             #print(lmList)

         if lmList:
             x1, y1 = lmList[4][1] , lmList[4][2]
             x2, y2 = lmList[8][1] , lmList[8][2]   

             cv2.circle(img, (x1,y1) ,10 , (23,145,255) , cv2.FILLED)      
             cv2.circle(img, (x2,y2) ,10 , (23,145,255) , cv2.FILLED)
             cv2.line(img, (x1,y1) , (x2,y2) , (0,12,255) , 3)

             length = math.hypot(x2-x1 , y2-y1)
             #print(length)
             if length<50 :
                 z1 = (x1+x2)//2
                 z2 = (y1+y2)//2  
                 cv2.circle(img, (z1,z2) , 15,(0,15,255), cv2.FILLED)

    volRange = volume.GetVolumeRange()
    minVol = volRange[0]
    maxVol = volRange[1]
    vol = np.interp(length , [50,250] , [minVol,maxVol])
    volBar = np.interp(length , [50,250] , [400,150])
    volume.SetMasterVolumeLevel(vol, None)
    #cv2.rectangle(img, (50,150) ,(85,450) , (254,8,0) , 3)
    #cv2.rectangle(img, (50,int(volBar)) , (85,400),(0,124,234),cv2.FILLED)
    cv2.imshow("Image" ,img)
    cv2.waitKey(1)