# -*- coding: utf-8 -*-
# ********************************************************************
#
#  $Id: svn_id $
#
#  Implements yFindAudioIn(), the high-level API for AudioIn functions
#
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__docformat__ = 'restructuredtext en'
from yocto_api import *


#--- (YAudioIn class start)
#noinspection PyProtectedMember
class YAudioIn(YFunction):
    """
    The YAudioIn class allows you to configure the volume of an audio input.

    """
    #--- (end of YAudioIn class start)
    #--- (YAudioIn return codes)
    #--- (end of YAudioIn return codes)
    #--- (YAudioIn dlldef)
    #--- (end of YAudioIn dlldef)
    #--- (YAudioIn yapiwrapper)
    #--- (end of YAudioIn yapiwrapper)
    #--- (YAudioIn definitions)
    VOLUME_INVALID = YAPI.INVALID_UINT
    VOLUMERANGE_INVALID = YAPI.INVALID_STRING
    SIGNAL_INVALID = YAPI.INVALID_INT
    NOSIGNALFOR_INVALID = YAPI.INVALID_INT
    MUTE_FALSE = 0
    MUTE_TRUE = 1
    MUTE_INVALID = -1
    #--- (end of YAudioIn definitions)

    def __init__(self, func):
        super(YAudioIn, self).__init__(func)
        self._className = 'AudioIn'
        #--- (YAudioIn attributes)
        self._callback = None
        self._volume = YAudioIn.VOLUME_INVALID
        self._mute = YAudioIn.MUTE_INVALID
        self._volumeRange = YAudioIn.VOLUMERANGE_INVALID
        self._signal = YAudioIn.SIGNAL_INVALID
        self._noSignalFor = YAudioIn.NOSIGNALFOR_INVALID
        #--- (end of YAudioIn attributes)

    #--- (YAudioIn implementation)
    def _parseAttr(self, json_val):
        if json_val.has("volume"):
            self._volume = json_val.getInt("volume")
        if json_val.has("mute"):
            self._mute = json_val.getInt("mute") > 0
        if json_val.has("volumeRange"):
            self._volumeRange = json_val.getString("volumeRange")
        if json_val.has("signal"):
            self._signal = json_val.getInt("signal")
        if json_val.has("noSignalFor"):
            self._noSignalFor = json_val.getInt("noSignalFor")
        super(YAudioIn, self)._parseAttr(json_val)

    def get_volume(self):
        """
        Returns audio input gain, in per cents.

        @return an integer corresponding to audio input gain, in per cents

        On failure, throws an exception or returns YAudioIn.VOLUME_INVALID.
        """
        # res
        if self._cacheExpiration <= YAPI.GetTickCount():
            if self.load(YAPI._yapiContext.GetCacheValidity()) != YAPI.SUCCESS:
                return YAudioIn.VOLUME_INVALID
        res = self._volume
        return res

    def set_volume(self, newval):
        """
        Changes audio input gain, in per cents.
        Remember to call the saveToFlash()
        method of the module if the modification must be kept.

        @param newval : an integer corresponding to audio input gain, in per cents

        @return YAPI.SUCCESS if the call succeeds.

        On failure, throws an exception or returns a negative error code.
        """
        rest_val = str(newval)
        return self._setAttr("volume", rest_val)

    def get_mute(self):
        """
        Returns the state of the mute function.

        @return either YAudioIn.MUTE_FALSE or YAudioIn.MUTE_TRUE, according to the state of the mute function

        On failure, throws an exception or returns YAudioIn.MUTE_INVALID.
        """
        # res
        if self._cacheExpiration <= YAPI.GetTickCount():
            if self.load(YAPI._yapiContext.GetCacheValidity()) != YAPI.SUCCESS:
                return YAudioIn.MUTE_INVALID
        res = self._mute
        return res

    def set_mute(self, newval):
        """
        Changes the state of the mute function. Remember to call the matching module
        saveToFlash() method to save the setting permanently.

        @param newval : either YAudioIn.MUTE_FALSE or YAudioIn.MUTE_TRUE, according to the state of the mute function

        @return YAPI.SUCCESS if the call succeeds.

        On failure, throws an exception or returns a negative error code.
        """
        rest_val = "1" if newval > 0 else "0"
        return self._setAttr("mute", rest_val)

    def get_volumeRange(self):
        """
        Returns the supported volume range. The low value of the
        range corresponds to the minimal audible value. To
        completely mute the sound, use set_mute()
        instead of the set_volume().

        @return a string corresponding to the supported volume range

        On failure, throws an exception or returns YAudioIn.VOLUMERANGE_INVALID.
        """
        # res
        if self._cacheExpiration <= YAPI.GetTickCount():
            if self.load(YAPI._yapiContext.GetCacheValidity()) != YAPI.SUCCESS:
                return YAudioIn.VOLUMERANGE_INVALID
        res = self._volumeRange
        return res

    def get_signal(self):
        """
        Returns the detected input signal level.

        @return an integer corresponding to the detected input signal level

        On failure, throws an exception or returns YAudioIn.SIGNAL_INVALID.
        """
        # res
        if self._cacheExpiration <= YAPI.GetTickCount():
            if self.load(YAPI._yapiContext.GetCacheValidity()) != YAPI.SUCCESS:
                return YAudioIn.SIGNAL_INVALID
        res = self._signal
        return res

    def get_noSignalFor(self):
        """
        Returns the number of seconds elapsed without detecting a signal.

        @return an integer corresponding to the number of seconds elapsed without detecting a signal

        On failure, throws an exception or returns YAudioIn.NOSIGNALFOR_INVALID.
        """
        # res
        if self._cacheExpiration <= YAPI.GetTickCount():
            if self.load(YAPI._yapiContext.GetCacheValidity()) != YAPI.SUCCESS:
                return YAudioIn.NOSIGNALFOR_INVALID
        res = self._noSignalFor
        return res

    @staticmethod
    def FindAudioIn(func):
        """
        Retrieves an audio input for a given identifier.
        The identifier can be specified using several formats:

        - FunctionLogicalName
        - ModuleSerialNumber.FunctionIdentifier
        - ModuleSerialNumber.FunctionLogicalName
        - ModuleLogicalName.FunctionIdentifier
        - ModuleLogicalName.FunctionLogicalName


        This function does not require that the audio input is online at the time
        it is invoked. The returned object is nevertheless valid.
        Use the method YAudioIn.isOnline() to test if the audio input is
        indeed online at a given time. In case of ambiguity when looking for
        an audio input by logical name, no error is notified: the first instance
        found is returned. The search is performed first by hardware name,
        then by logical name.

        If a call to this object's is_online() method returns FALSE although
        you are certain that the matching device is plugged, make sure that you did
        call registerHub() at application initialization time.

        @param func : a string that uniquely characterizes the audio input, for instance
                MyDevice.audioIn1.

        @return a YAudioIn object allowing you to drive the audio input.
        """
        # obj
        obj = YFunction._FindFromCache("AudioIn", func)
        if obj is None:
            obj = YAudioIn(func)
            YFunction._AddToCache("AudioIn", func, obj)
        return obj

    def nextAudioIn(self):
        """
        Continues the enumeration of audio inputs started using yFirstAudioIn().
        Caution: You can't make any assumption about the returned audio inputs order.
        If you want to find a specific an audio input, use AudioIn.findAudioIn()
        and a hardwareID or a logical name.

        @return a pointer to a YAudioIn object, corresponding to
                an audio input currently online, or a None pointer
                if there are no more audio inputs to enumerate.
        """
        hwidRef = YRefParam()
        if YAPI.YISERR(self._nextFunction(hwidRef)):
            return None
        if hwidRef.value == "":
            return None
        return YAudioIn.FindAudioIn(hwidRef.value)

#--- (end of YAudioIn implementation)

#--- (YAudioIn functions)

    @staticmethod
    def FirstAudioIn():
        """
        Starts the enumeration of audio inputs currently accessible.
        Use the method YAudioIn.nextAudioIn() to iterate on
        next audio inputs.

        @return a pointer to a YAudioIn object, corresponding to
                the first audio input currently online, or a None pointer
                if there are none.
        """
        devRef = YRefParam()
        neededsizeRef = YRefParam()
        serialRef = YRefParam()
        funcIdRef = YRefParam()
        funcNameRef = YRefParam()
        funcValRef = YRefParam()
        errmsgRef = YRefParam()
        size = YAPI.C_INTSIZE
        #noinspection PyTypeChecker,PyCallingNonCallable
        p = (ctypes.c_int * 1)()
        err = YAPI.apiGetFunctionsByClass("AudioIn", 0, p, size, neededsizeRef, errmsgRef)

        if YAPI.YISERR(err) or not neededsizeRef.value:
            return None

        if YAPI.YISERR(
                YAPI.yapiGetFunctionInfo(p[0], devRef, serialRef, funcIdRef, funcNameRef, funcValRef, errmsgRef)):
            return None

        return YAudioIn.FindAudioIn(serialRef.value + "." + funcIdRef.value)

#--- (end of YAudioIn functions)
