def GetDeviceLines(deviceId=0):
deviceId = GetDeviceId(deviceId)
mixercaps = MIXERCAPS()
mixerline = MIXERLINE()
hmixer = HMIXER()
# Obtain the hmixer struct
rc = mixerOpen(byref(hmixer), deviceId, 0, 0, 0)
if rc != MMSYSERR_NOERROR:
raise SoundMixerException()
if mixerGetDevCaps(deviceId, byref(mixercaps), sizeof(MIXERCAPS)):
raise SoundMixerException()
for destinationNum in range(mixercaps.cDestinations):
mixerline.cbStruct = sizeof(MIXERLINE)
mixerline.dwDestination = destinationNum
if mixerGetLineInfo(hmixer, byref(mixerline),
MIXER_GETLINEINFOF_DESTINATION):
continue
print "Destination:", destinationNum, mixerline.szName
for name in GetControls(hmixer, mixerline):
print " Control:", name
for sourceNum in range(mixerline.cConnections):
mixerline.cbStruct = sizeof(MIXERLINE)
mixerline.dwDestination = destinationNum
mixerline.dwSource = sourceNum
if mixerGetLineInfo(hmixer, byref(mixerline),
MIXER_GETLINEINFOF_SOURCE):
continue
print " Source:", sourceNum, mixerline.szName
for name in GetControls(hmixer, mixerline):
print " Control:", name
def GetMixerDevices(useList=False):
"""
Returns a list of all mixer device names available on the system.
"""
mixcaps = MIXERCAPS()
result = []
# get the number of Mixer devices in this computer
result.append("Primary Sound Driver")
for i in range(mixerGetNumDevs()):
# get info about the device
if mixerGetDevCaps(i, byref(mixcaps), sizeof(MIXERCAPS)):
continue
# store the name of the device
result.append(mixcaps.szPname)
return result if useList else dict((i - 1, result[i]) for i in range(len(result)))