/*

Copyright (C) 2016 Apple Inc. All Rights Reserved.

See LICENSE.txt for this sample’s licensing information

Abstract:

Part of Core Audio Public Utility Classes

*/

#include "CAAudioChannelLayout.h"

#if !defined(__COREAUDIO_USE_FLAT_INCLUDES__)

    #include <AudioToolbox/AudioFormat.h>

#else

    #include <AudioFormat.h>

#endif

CAAudioChannelLayout::CAAudioChannelLayout ()

{

    mLayout = RefCountedLayout::CreateWithNumberChannelDescriptions(0);

}

//=============================================================================

//  CAAudioChannelLayout::CAAudioChannelLayout

//=============================================================================

CAAudioChannelLayout::CAAudioChannelLayout (UInt32 inNumberChannels, bool inChooseSurround)

{       

        // this chooses default layouts based on the number of channels...

    AudioChannelLayoutTag tag;

    switch (inNumberChannels) 

    {

        default:

            // here we have a "broken" layout, in the sense that we haven't any idea how to lay this out

            mLayout = RefCountedLayout::CreateWithNumberChannelDescriptions(inNumberChannels);

            SetAllToUnknown(*mLayout->GetLayout(), inNumberChannels);

            return; // don't fall into the tag case

        case 1:

            tag = kAudioChannelLayoutTag_Mono;

            break;

        case 2:

            tag = inChooseSurround ? kAudioChannelLayoutTag_Binaural : kAudioChannelLayoutTag_Stereo;

            break;

        case 4:

            tag = inChooseSurround ? kAudioChannelLayoutTag_Ambisonic_B_Format : kAudioChannelLayoutTag_AudioUnit_4;

            break;

        case 5:

            tag = inChooseSurround ? kAudioChannelLayoutTag_AudioUnit_5_0 : kAudioChannelLayoutTag_AudioUnit_5;

            break;

        case 6:

            tag = inChooseSurround ? kAudioChannelLayoutTag_AudioUnit_6_0 : kAudioChannelLayoutTag_AudioUnit_6;

            break;

        case 7:

            tag = kAudioChannelLayoutTag_AudioUnit_7_0;

            break;

        case 8:

            tag = kAudioChannelLayoutTag_AudioUnit_8;

            break;

    }

    mLayout = RefCountedLayout::CreateWithLayoutTag(tag);

}

//=============================================================================

//  CAAudioChannelLayout::CAAudioChannelLayout

//=============================================================================

CAAudioChannelLayout::CAAudioChannelLayout (AudioChannelLayoutTag inLayoutTag)

    : mLayout(NULL)

{

    SetWithTag(inLayoutTag);

}

//=============================================================================

//  CAAudioChannelLayout::CAAudioChannelLayout

//=============================================================================

CAAudioChannelLayout::CAAudioChannelLayout (const CAAudioChannelLayout &c)

    : mLayout(NULL)

{

    *this = c;

}

//=============================================================================

//  CAAudioChannelLayout::AudioChannelLayout

//=============================================================================

CAAudioChannelLayout::CAAudioChannelLayout (const AudioChannelLayout* inChannelLayout)

    : mLayout(NULL)

{

    *this = inChannelLayout;

}

//=============================================================================

//  CAAudioChannelLayout::~CAAudioChannelLayout

//=============================================================================

CAAudioChannelLayout::~CAAudioChannelLayout ()

{

    if (mLayout) {

        mLayout->release();

        mLayout = NULL;

    }

}

//=============================================================================

//  CAAudioChannelLayout::CAAudioChannelLayout

//=============================================================================

CAAudioChannelLayout& CAAudioChannelLayout::operator= (const CAAudioChannelLayout &c)

{

    if (mLayout != c.mLayout) {

        if (mLayout)

            mLayout->release();

        if ((mLayout = c.mLayout) != NULL)

            mLayout->retain();

    }

    return *this;

}

CAAudioChannelLayout&   CAAudioChannelLayout::operator= (const AudioChannelLayout* inChannelLayout)

{

    if (mLayout && &mLayout->Layout() == inChannelLayout)

        return *this;

    if (mLayout)

        mLayout->release();

    if (inChannelLayout == NULL) 

    {

        mLayout = RefCountedLayout::CreateWithNumberChannelDescriptions(0);

    }

    else

    {

        mLayout = RefCountedLayout::CreateWithLayout(inChannelLayout);

    }

    return *this;

}

void    CAAudioChannelLayout::SetWithTag(AudioChannelLayoutTag inTag)

{

    if (mLayout)

        mLayout->release();

    mLayout = RefCountedLayout::CreateWithLayoutTag(inTag);

}

//=============================================================================

//  CAAudioChannelLayout::operator==

//=============================================================================

bool        CAAudioChannelLayout::operator== (const CAAudioChannelLayout &c) const

{

    if (mLayout == c.mLayout)

        return true;

    return Layout() == c.Layout();

}

//=============================================================================

//  CAAudioChannelLayout::operator!=

//=============================================================================

bool        CAAudioChannelLayout::operator!= (const CAAudioChannelLayout &c) const

{

    if (mLayout == c.mLayout)

        return false;

    return !(Layout() == c.Layout());

}

//=============================================================================

//  CAAudioChannelLayout::Print

//=============================================================================

void        CAAudioChannelLayout::Print (FILE* file) const

{

    CAShowAudioChannelLayout (file, &Layout());

}