Phonon.BackendInterface ¶

详细描述 ¶

def createObject(self, c, parent, args):
    if c == BackendInterface.MediaObjectClass:
        return MediaObject(parent)
    elif c == BackendInterface.VolumeFaderEffectClass:
        return VolumeFaderEffect(parent)
    elif c == BackendInterface.AudioOutputClass:
        return AudioOutput(parent)
    elif c == BackendInterface.AudioDataOutputClass:
        return AudioDataOutput(parent)
    elif c == BackendInterface.VisualizationClass:
        return Visualization(parent)
    elif c == BackendInterface.VideoDataOutputClass:
        return VideoDataOutput(parent)
    elif c == BackendInterface.EffectClass:
        return Effect(args[0].toInt(), parent)
    elif c == BackendInterface.VideoWidgetClass:
        return VideoWidget(parent)
    return None
def objectDescriptionIndexes(self, type_):
    retval = set()
    if type_ == Phonon.AudioOutputDeviceType:
        # use AudioDeviceEnumerator to list ALSA and OSS devices
        retval.add(10000)
        retval.add(10001)
    elif type_ == Phonon.AudioCaptureDeviceType:
        retval.add(20000)
        retval.add(20001)
    elif type_ == Phonon.VideoCaptureDeviceType:
        retval.add(30000)
        retval.add(30001)
    elif type_ == Phonon.EffectType:
        retval.add(0x7F000001)
    return retval
def objectDescriptionProperties(self, type_, index):
    ret = {}
    if type_ == Phonon.AudioOutputDeviceType:
        if index == 10000:
            ret["name"] = "internal Soundcard"
        elif index == 10001:
            ret["name"] = "USB Headset"
            ret["available"] = False
    elif type_ == Phonon.AudioCaptureDeviceType:
        if index == 20000:
            ret["name"] = "Soundcard"
            ret["description"] = "first description"
        elif index == 20001:
            ret["name"] = "DV"
            ret["description"] = "second description"
    elif type_ == Phonon.VideoCaptureDeviceType:
        elif index == 30000:
            ret["name"] = "USB Webcam"
            ret["description"] = "first description"
        elif index == 30001:
            ret["name"] = "DV"))
            ret["description"] = "second description"
    elif type_ == Phonon.EffectType:
        if index == 0x7F000001:
            ret["name"] = "Delay"
            ret["description"] = "Simple delay effect with time, feedback and level controls."
    return ret
									

class PySide.phonon.Phonon. BackendInterface ¶

PySide.phonon.Phonon.BackendInterface. Class ¶

Classes that the PySide.phonon.Phonon::BackendInterface.createObject() function has to handle.

常量	描述
Phonon.BackendInterface.MediaObjectClass	Request to return a MediaObject 对象。
Phonon.BackendInterface.VolumeFaderEffectClass	Request to return a VolumeFaderEffect 对象。
Phonon.BackendInterface.AudioOutputClass	Request to return an AudioOutput 对象。
Phonon.BackendInterface.AudioDataOutputClass	Request to return an AudioDataOutput 对象。
Phonon.BackendInterface.VisualizationClass	Request to return a Visualization 对象。
Phonon.BackendInterface.VideoDataOutputClass	Request to return a VideoDataOutput 对象。
Phonon.BackendInterface.EffectClass	Request to return a Effect object. Takes an additional int that specifies the effect ID.
Phonon.BackendInterface.VideoWidgetClass	Request to return a VideoWidget 对象。

PySide.phonon.Phonon.BackendInterface. availableMimeTypes ( ) ¶

返回类型：	字符串列表

Returns all available MIME types.

PySide.phonon.Phonon.BackendInterface. connectNodes ( arg__1 , arg__2 ) ¶

参数：	arg__1 – PySide.QtCore.QObject arg__2 – PySide.QtCore.QObject
返回类型：	PySide.QtCore.bool

Defines a signal connection between the two given nodes.

PySide.phonon.Phonon.BackendInterface. createObject ( c , parent [ , args=list() ] ) ¶

参数：	c – PySide.phonon.Phonon::BackendInterface.Class parent – PySide.QtCore.QObject args –
返回类型：	PySide.QtCore.QObject

PySide.phonon.Phonon.BackendInterface. disconnectNodes ( arg__1 , arg__2 ) ¶

参数：	arg__1 – PySide.QtCore.QObject arg__2 – PySide.QtCore.QObject
返回类型：	PySide.QtCore.bool

Cuts a signal connection between the two given nodes.

PySide.phonon.Phonon.BackendInterface. endConnectionChange ( arg__1 ) ¶

参数：	arg__1 –
返回类型：	PySide.QtCore.bool

PySide.phonon.Phonon.BackendInterface. objectDescriptionIndexes ( type ) ¶

参数：	type – PySide.phonon.Phonon.ObjectDescriptionType
返回类型：

Returns the unique identifiers for the devices/effects/codecs of the given type .

type see Phonon.ObjectDescriptionType

PySide.phonon.Phonon.BackendInterface. objectDescriptionProperties ( type , index ) ¶

参数：	type – PySide.phonon.Phonon.ObjectDescriptionType index – PySide.QtCore.int
返回类型：

Given a unique identifier that was returned from objectDescriptionIndexes this function returns a hash mapping property names to values.

The property “name” must always be present. All other properties are optional.

特性	描述
name	The name of the device/effect/codec/...
description	A text explaining what this device/effect/codec/... is/can do
icon	An icon name (using the freedesktop naming scheme) or a PySide.QtGui.QIcon for this device/effect/codec/...
available	A bool telling whether the device is present or unplugged.

type see Phonon.ObjectDescriptionType index The unique identifier that is returned from objectDescriptionIndexes

PySide.phonon.Phonon.BackendInterface. startConnectionChange ( arg__1 ) ¶

参数：	arg__1 –
返回类型：	PySide.QtCore.bool