1 /*  This file is part of the KDE project.

     2 

     3     Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).

     4 

     5     This library is free software: you can redistribute it and/or modify

     6     it under the terms of the GNU Lesser General Public License as published by

     7     the Free Software Foundation, either version 2.1 or 3 of the License.

     8 

     9     This library is distributed in the hope that it will be useful,

    10     but WITHOUT ANY WARRANTY; without even the implied warranty of

    11     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

    12     GNU Lesser General Public License for more details.

    13 

    14     You should have received a copy of the GNU Lesser General Public License

    15     along with this library.  If not, see <http://www.gnu.org/licenses/>.

    16 */

    17 

    18 #include "audiopartoutput.h"

    19 

    20 QT_BEGIN_NAMESPACE

    21 

    22 namespace Phonon

    23 {

    24 namespace QT7

    25 {

    26 

    27 AudioPartOutput::AudioPartOutput()

    28     : AudioNode()

    29 {

    30 }

    31 

    32 AudioPartOutput::~AudioPartOutput()

    33 {

    34 }

    35 

    36 ComponentDescription AudioPartOutput::getAudioNodeDescription() const

    37 {

    38 	ComponentDescription description;

    39 	description.componentType = kAudioUnitType_Output;

    40 	description.componentSubType = kAudioUnitSubType_DefaultOutput;

    41 	description.componentManufacturer = kAudioUnitManufacturer_Apple;

    42 	description.componentFlags = 0;

    43 	description.componentFlagsMask = 0;

    44     return description;

    45 }

    46 

    47 void AudioPartOutput::initializeAudioUnit(AudioNode *source)

    48 {

    49     m_audioStreamDescription = source->outputStreamDescription();

    50     m_audioChannelLayout = source->outputChannelLayout();

    51     m_audioChannelLayoutSize = source->outputChannelLayoutSize();

    52 

    53     // Specify the stream format:

    54     OSStatus err;

    55 	err = AudioUnitSetProperty(m_audioUnit,

    56 	    kAudioUnitProperty_StreamFormat, kAudioUnitScope_Input,

    57 	    0, m_audioStreamDescription, sizeof(AudioStreamBasicDescription));

    58     BACKEND_ASSERT2(err == noErr, "Could not set stream format on audio output unit.", FATAL_ERROR)

    59 

    60     // Set the channel layout:

    61 	err = AudioUnitSetProperty(m_audioUnit,

    62 	    kAudioUnitProperty_AudioChannelLayout, kAudioUnitScope_Input,

    63 	    0, m_audioChannelLayout, m_audioChannelLayoutSize);

    64     BACKEND_ASSERT2(err == noErr, "Could not set channel layout on audio output unit.", FATAL_ERROR)

    65 }

    66 

    67 }} // namespace Phonon::QT7

    68 

    69 QT_END_NAMESPACE