FunWithPython/gesture_volume_control/main.py at master · Nis7538/FunWithPython · GitHub

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import cv2 as cv
import time
import mediapipe as mp
import numpy as np
import math
from ctypes import cast, POINTER
from comtypes import CLSCTX_ALL
from pycaw.pycaw import AudioUtilities, IAudioEndpointVolume
###########################
wCam,hCam = 640,480
###########################

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

mpHands = mp.solutions.hands
hands = mpHands.Hands(min_detection_confidence=0.7)
mpDraw = mp.solutions.drawing_utils

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]

vol=0
volBar = 400
volPer = 0

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

    imgRGB = cv . cvtColor(img,cv.COLOR_BGR2RGB)
    results = hands.process(imgRGB)
    lmList = []
    if results.multi_hand_landmarks:
        for handLms in results.multi_hand_landmarks:
            for id,lm in enumerate(handLms.landmark):

                h, w, c = img.shape
                cx, cy = int(lm.x*w) , int(lm.y*h)
                #print(id,cx,cy)
                lmList.append([id, cx, cy])


                cv.circle(img,(cx,cy),8,(0,255,0),cv.FILLED)

            mpDraw.draw_landmarks(img,handLms,mpHands.HAND_CONNECTIONS)
    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),10,(255,0,0),cv.FILLED)
        cv.circle(img,(x2,y2),10,(255,0,0),cv.FILLED)
        cv.line(img,(x1,y1),(x2,y2),(0,255,0),3)
        cv.circle(img,(cx,cy),10,(255,0,0),cv.FILLED)
        length = math.hypot(x2-x1,y2-y1)
        #print(length)

        # Hand Range 50-220
        # volume Range -64 - 0

        vol = np.interp(length,[50,170],[minVol,maxVol])
        volBar = np.interp(length,[50,170],[400,150])
        volPer = np.interp(length,[50,170],[0,100])
        print(int(length),vol)
        volume.SetMasterVolumeLevel(vol, None)


        if(length<50):
            cv.circle(img,(cx,cy),10,(0,0,255),cv.FILLED)

    cv.rectangle(img,(50,150),(85,400),(0,255,0),2)
    cv.rectangle(img,(50,int(volBar)),(85,400),(0,255,0),cv.FILLED)
    cv.putText(img,f'{int(volPer)}%',(40,450),cv.FONT_HERSHEY_PLAIN,3,(0,255,0),3)

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

    cv.putText(img,f'FPS:{int(fps)}',(40,70),cv.FONT_HERSHEY_PLAIN,3,(0,0,255),3)

    cv.imshow("Video",img)

    cv.waitKey(1)