/*

    Copyright (C) 2015 Apple Inc. All Rights Reserved.

    See LICENSE.txt for this sample’s licensing information

    Abstract:

    Part of CoreAudio Utility Classes

*/

#include "CAComponentDescription.h"

#include <ctype.h>

/* !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

This file has been MODIFIED from what is available as part of the Core Audio Utility Classes

< https://developer.apple.com/library/ios/samplecode/CoreAudioUtilityClasses/Introduction/Intro.html>

We have removed the need for CAStreamBasicDescription.h simply for the CAStringForOSType function which

also elimitates all the deprecation warnings due to AudioSampleType, AudioUnitSampleType etc.

Use AVAudioFormat as the replacement for CAStreamBasicDescription

*/

// added from CAStreamBasicDescription class

char *CAStringForOSType (OSType t, char *writeLocation)

{

    char *p = writeLocation;

    unsigned char str[4] = {0}, *q = str;

    *(UInt32 *)str = CFSwapInt32HostToBig(t);

    bool hasNonPrint = false;

    for (int i = 0; i < 4; ++i) {

        if (!(isprint(*q) && *q != '\\')) {

            hasNonPrint = true;

            break;

        }

        q++;

    }

    q = str;

    if (hasNonPrint)

        p += sprintf (p, "0x");

    else

        *p++ = '\'';

    for (int i = 0; i < 4; ++i) {

        if (hasNonPrint) {

            p += sprintf(p, "%02X", *q++);

        } else {

            *p++ = *q++;

        }

    }

    if (!hasNonPrint)

        *p++ = '\'';

    *p = '\0';

    return writeLocation;

}

void CAShowComponentDescription(const AudioComponentDescription *desc)

{

    CAComponentDescription::_CAShowComponentDescription (desc, stdout);

}

void    CAComponentDescription::_CAShowComponentDescription(const AudioComponentDescription *desc, FILE* file)

{

    if (desc)

    {

        char str[24];

        fprintf (file, "AudioComponentDescription: %s - ", CAStringForOSType(desc->componentType, str));

        fprintf (file, "%s - ", CAStringForOSType(desc->componentSubType, str));

        fprintf (file, "%s", CAStringForOSType(desc->componentManufacturer, str));      

        fprintf (file, ", 0x%X, 0x%X\n", (int)desc->componentFlags, (int)desc->componentFlagsMask);

    }

}

CAComponentDescription::CAComponentDescription (OSType inType, OSType inSubtype, OSType inManu)

{

    componentType = inType;

    componentSubType = inSubtype;

    componentManufacturer = inManu;

    componentFlags = 0;

    componentFlagsMask = 0;

}

bool    CAComponentDescription::IsAU () const 

{ 

    bool flag = IsEffect() || IsMusicDevice() || IsOffline();

    if (flag) return true;

    switch (componentType) {

        case kAudioUnitType_Output:

        case kAudioUnitType_FormatConverter:

        case kAudioUnitType_Mixer:

            return true;

    }

    return false;

}

inline bool _MatchTest (const OSType &inTypeA, const OSType &inTypeB)

{

    return ((inTypeA == inTypeB) || (!inTypeA && !inTypeB) || (inTypeA && !inTypeB) || (!inTypeA && inTypeB)); 

}

bool    CAComponentDescription::Matches (const AudioComponentDescription &desc) const

{

    bool matches = false;

        // see if the type matches

    matches = _MatchTest (componentType, desc.componentType);

    if (matches)

        matches = _MatchTest (componentSubType, desc.componentSubType);

    if (matches)

        matches = _MatchTest (componentManufacturer, desc.componentManufacturer);

    return matches;

}