def FillTree(self):
root = self.AddRoot("Sound Card")
mixercaps = MIXERCAPS()
mixerline = MIXERLINE()
self.mixerHandle = mixerHandle = HMIXER()
# Obtain the hmixer struct
rc = mixerOpen(byref(mixerHandle), self.deviceId, 0, 0, 0)
if rc != MMSYSERR_NOERROR:
raise SoundMixerException()
if mixerGetDevCaps(mixerHandle, byref(mixercaps), sizeof(MIXERCAPS)):
raise SoundMixerException()
for i in range(mixercaps.cDestinations):
mixerline.cbStruct = sizeof(MIXERLINE)
mixerline.dwDestination = i
if mixerGetLineInfo(mixerHandle, byref(mixerline),
MIXER_GETLINEINFOF_DESTINATION):
continue
destItem = self.AppendItem(
root, mixerline.szName + ": %i" % mixerline.cChannels)
self.AddControls(destItem, mixerline)
for n in range(mixerline.cConnections):
mixerline.cbStruct = sizeof(MIXERLINE)
mixerline.dwDestination = i
mixerline.dwSource = n
if mixerGetLineInfo(mixerHandle, byref(mixerline),
MIXER_GETLINEINFOF_SOURCE):
continue
sourceItem = self.AppendItem(
destItem, mixerline.szName + ": %i" % mixerline.cChannels)
self.AddControls(sourceItem, mixerline)
def GetDeviceLines(self, deviceId=0):
mixercaps = MIXERCAPS()
mixerline = MIXERLINE()
result = []
hmixer = self.GetMixer(deviceId)
if mixerGetDevCaps(hmixer, byref(mixercaps), sizeof(MIXERCAPS)):
raise SoundMixerException()
for i in range(mixercaps.cDestinations):
mixerline.cbStruct = sizeof(MIXERLINE)
mixerline.dwDestination = i
if mixerGetLineInfo(hmixer, byref(mixerline), MIXER_GETLINEINFOF_DESTINATION):
continue
destination = mixerline.szName
for control in self.GetControls(hmixer, mixerline):
result.append((control[0], destination, None, control[1], control[2], control[3]))
for n in range(mixerline.cConnections):
mixerline.cbStruct = sizeof(MIXERLINE)
mixerline.dwDestination = i
mixerline.dwSource = n
if mixerGetLineInfo(hmixer, byref(mixerline), MIXER_GETLINEINFOF_SOURCE):
continue
source = mixerline.szName
for control in self.GetControls(hmixer, mixerline):
result.append((control[0], destination, source, control[1], control[2], control[3]))
return result
