main.py

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

mpHands = mp.solutions.hands
hands = mpHands.Hands(
    static_image_mode=False,
    model_complexity=1,
    min_detection_confidence=0.75,
    min_tracking_confidence=0.75,
    max_num_hands=2)

Draw = mp.solutions.drawing_utils
cap = cv2.VideoCapture(0)

devices = AudioUtilities.GetSpeakers()
interface = devices.Activate(IAudioEndpointVolume._iid_, CLSCTX_ALL, None)
volume = cast(interface, POINTER(IAudioEndpointVolume))

_, frame = cap.read()
height, width, color_channels = frame.shape

while True: 
    frame = cv2.flip(frame, 1)
    frameRGB = cv2.cvtColor(frame, cv2.COLOR_BGR2RGB)
    Process = hands.process(frameRGB)

    landmarkList = []
    if Process.multi_hand_landmarks:
        for handlm in Process.multi_hand_landmarks:
            for _id, landmarks in enumerate(handlm.landmark):
                x, y = int(landmarks.x * width), int(landmarks.y * height)
                landmarkList.append([_id, x, y])
            Draw.draw_landmarks(frame, handlm, mpHands.HAND_CONNECTIONS)

    if landmarkList != []:
        x_1, y_1 = landmarkList[4][1], landmarkList[4][2]
        x_2, y_2 = landmarkList[8][1], landmarkList[8][2]

        cv2.circle(frame, (x_1, y_1), 7, (0, 255, 0), cv2.FILLED)
        cv2.circle(frame, (x_2, y_2), 7, (0, 255, 0), cv2.FILLED)
        cv2.line(frame, (x_1, y_1), (x_2, y_2), (0, 255, 0), 3)

        L = hypot(x_2 - x_1, y_2 - y_1)
        volume_level = np.interp(L, [15, 220], [0, 100])
        volume.SetMasterVolumeLevelScalar(volume_level / 100, None)
        volume_text = f"Volume: {int(volume_level)}%"
        cv2.putText(frame, volume_text, (10, 30), cv2.FONT_HERSHEY_SIMPLEX, 1, (0, 255, 0), 2)

        # Send volume data to the server
        try:
            print(f"Sending volume data: {int(volume_level)}")  # Debugging line
            requests.post('http://localhost:3000/volume', json={'volume': int(volume_level)})
        except requests.exceptions.RequestException as e:
            print(f"Error sending volume data: {e}")

    cv2.imshow('Image', frame)
    if cv2.waitKey(1) & 0xff == ord('q'):
        break

    _, frame = cap.read()

cap.release()
cv2.destroyAllWindows()