volume_control.py

from ctypes import POINTER, cast
# import comtypes
from comtypes import CLSCTX_ALL

from pycaw.pycaw import AudioUtilities, IAudioEndpointVolume, CLSID_MMDeviceEnumerator, IMMDeviceEnumerator, EDataFlow, ERole


# class MyAudioUtilities(AudioUtilities):
#     @staticmethod
#     def GetSpeaker(id=None):
#         device_enumerator = comtypes.CoCreateInstance(
#             CLSID_MMDeviceEnumerator,
#             IMMDeviceEnumerator,
#             comtypes.CLSCTX_INPROC_SERVER)
#         if id is not None:
#             speakers = device_enumerator.GetDevice(id)
#         else:
#             speakers = device_enumerator.GetDefaultAudioEndpoint(EDataFlow.eRender.value, ERole.eMultimedia.value)
#         return speakers


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


def setVolume(targetVolume, outputDevice=None):
    volume.SetMasterVolumeLevelScalar(targetVolume/100, None)
    # print("volume.GetMasterVolumeLevel(): %s" % volume.GetMasterVolumeLevelScalar())


def getVolume(outputDevice=None):
    # print("volume.GetMasterVolumeLevel(): %s" % round(volume.GetMasterVolumeLevelScalar()*100))
    return volume.GetMasterVolumeLevelScalar()*100


def getName():
    return str(devices)


# async def printAllDevices():
#     mixer_output = None
#
#     devicelist = MyAudioUtilities.GetAllDevices()
#
#     for device in devicelist:
#         if "Speaker" in str(device):
#             print(device)
#
# def main():
#     mixer_output = None
#
#     devicelist = MyAudioUtilities.GetAllDevices()
#
#     for device in devicelist:
#         if "Speakers (Realtek(R) Audio)" in str(device) and "Speaker" in str(device):
#             mixer_output = device
#
#     devices = MyAudioUtilities.GetSpeaker(mixer_output.id)
#     print(devices)
#
#     interface = devices.Activate(IAudioEndpointVolume._iid_, CLSCTX_ALL, None)
#     volume = cast(interface, POINTER(IAudioEndpointVolume))
#     print("volume.GetMute(): %s" % volume.GetMute())
#     print("volume.GetMasterVolumeLevel(): %s" % volume.GetMasterVolumeLevel())
#     print("volume.GetVolumeRange(): (%s, %s, %s)" % volume.GetVolumeRange())
#     print("volume.SetMasterVolumeLevel()")
#     volume.SetMasterVolumeLevelScalar(0.3, None)
#     print("volume.GetMasterVolumeLevel(): %s" % volume.GetMasterVolumeLevelScalar())
#
#
#
# if __name__ == "__main__":
#     #main()
#     #setVolume(100, "Speakers (Realtek(R) Audio)")
#     getVolume("Speakers (Realtek(R) Audio)")
#     #printAllDevices()