/*

     File: CAPersistence.cpp

 Abstract: CAPersistence.h

  Version: 1.1

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*/

#include "CACFArray.h"

#include "CACFDictionary.h"

#include "CAAudioUnit.h"

#include "CACFString.h"

#include "CAAudioChannelLayout.h"

#include "CAAUParameter.h"

#include "CAAUMIDIMap.h"

#include <CoreServices/../Frameworks/CarbonCore.framework/Headers/MacErrors.h>

#pragma mark __CAStreamBasicDescription

static const CFStringRef kSampleRate = CFSTR("sample rate");

static const CFStringRef kFormat = CFSTR("format");

static const CFStringRef kFormatFlags = CFSTR("format flags");

static const CFStringRef kPacketBytes = CFSTR("packet bytes");

static const CFStringRef kFramePackets = CFSTR("frame packets");

static const CFStringRef kFrameBytes = CFSTR("frame bytes");

static const CFStringRef kFrameChannels = CFSTR("frame channels");

static const CFStringRef kChannelBits = CFSTR("channel bits");

        // This will return a value that should be used as the key for this struct

        // and a CFData object that contains the current state of this object

OSStatus    CAStreamBasicDescription::Save (CFPropertyListRef *outData) const

{

    CACFDictionary dict(false);

    if (!dict.AddFloat64 (kSampleRate, mSampleRate)) goto error;

    if (!dict.AddUInt32 (kFormat, mFormatID)) goto error;

    if (!dict.AddUInt32 (kFormatFlags, mFormatFlags)) goto error;

    if (!dict.AddUInt32 (kPacketBytes, mBytesPerPacket)) goto error;

    if (!dict.AddUInt32 (kFramePackets, mFramesPerPacket)) goto error;

    if (!dict.AddUInt32 (kFrameBytes, mBytesPerFrame)) goto error;

    if (!dict.AddUInt32 (kFrameChannels, mChannelsPerFrame)) goto error;

    if (!dict.AddUInt32 (kChannelBits, mBitsPerChannel)) goto error;

    *outData = dict.GetDict();

    return noErr;

error:

    dict.ShouldRelease (true);

    return paramErr;

}

        // Given a CFData object generated by the save command, this will re-establish

        // the CAStreamBasicDescription

OSStatus    CAStreamBasicDescription::Restore (CFPropertyListRef& inData)

{

    if (CFGetTypeID (inData) != CFDictionaryGetTypeID()) return paramErr;

    CACFDictionary dict(static_cast<CFDictionaryRef>(inData), false);

    if (!dict.GetFloat64 (kSampleRate, mSampleRate)) return paramErr;

    if (!dict.GetUInt32 (kFormat, mFormatID)) return paramErr;

    if (!dict.GetUInt32 (kFormatFlags, mFormatFlags)) return paramErr;

    if (!dict.GetUInt32 (kPacketBytes, mBytesPerPacket)) return paramErr;

    if (!dict.GetUInt32 (kFramePackets, mFramesPerPacket)) return paramErr;

    if (!dict.GetUInt32 (kFrameBytes, mBytesPerFrame)) return paramErr;

    if (!dict.GetUInt32 (kFrameChannels, mChannelsPerFrame)) return paramErr;

    if (!dict.GetUInt32 (kChannelBits, mBitsPerChannel)) return paramErr;

    return noErr;

}

#pragma mark __CAComponentDescription

static const CFStringRef kType = CFSTR("type");

static const CFStringRef kSubType = CFSTR("subtype");

static const CFStringRef kManu = CFSTR("manufacturer");

OSStatus        CAComponentDescription::Save (CFPropertyListRef *outData) const

{

    CACFDictionary dict(false);

    if (!dict.AddUInt32 (kType, componentType)) goto error;

    if (!dict.AddUInt32 (kSubType, componentSubType)) goto error;

    if (!dict.AddUInt32 (kManu, componentManufacturer)) goto error;

    *outData = dict.GetDict();

    return 0;

error:

    dict.ShouldRelease (true);

    return paramErr;

}

OSStatus        CAComponentDescription::Restore (CFPropertyListRef &inData)

{

    if (CFGetTypeID (inData) != CFDictionaryGetTypeID()) return paramErr;

    CACFDictionary dict(static_cast<CFDictionaryRef>(inData), false);

    if (!dict.GetUInt32 (kType, componentType)) return paramErr;

    if (!dict.GetUInt32 (kSubType, componentSubType)) return paramErr;

    if (!dict.GetUInt32 (kManu, componentManufacturer)) return paramErr;

    componentFlags = 0;

    componentFlagsMask = 0;

    return 0;

}

#pragma mark __CAComponent

OSStatus        CAComponent::Save (CFPropertyListRef *outData) const

{

    OSStatus result = mDesc.Save (outData);

    if (result) return result;

    //add the name string of the component for a human readable name...

    // this name string is *not* restored when restoring the component

    CFStringRef name = GetCompName ();

    if (name && *outData)

        CFDictionarySetValue ((CFMutableDictionaryRef)(*outData), CFSTR("name"), name);

    return noErr;

}

OSStatus        CAComponent::Restore (CFPropertyListRef &inData)

{

    if (mDesc.Restore (inData)) return paramErr;

    Clear();

    mComp = AudioComponentFindNext (NULL, &mDesc);

        // this will restore the current flags...

    if (mComp)

        AudioComponentGetDescription (Comp(), &mDesc);

    return noErr;

}

#pragma mark __CAAudioChannelLayout

static const CFStringRef kACLTagKey = CFSTR("acl tag");

static const CFStringRef kACLBitmapKey = CFSTR("chan bitmap");

static const CFStringRef kACLLabelKey = CFSTR("label");

static const CFStringRef kACLFlagsKey = CFSTR("flags");

static const CFStringRef kACLCoords0Key = CFSTR("coords 0");

static const CFStringRef kACLCoords1Key = CFSTR("coords 1");

static const CFStringRef kACLCoords2Key = CFSTR("coords 2");

static const CFStringRef kACLDescsKey = CFSTR("descriptions");

OSStatus    CAAudioChannelLayout::Save (CFPropertyListRef *outData) const 

{

    const AudioChannelLayout& layout = Layout();

    CACFDictionary dict (false);

    if (!dict.AddUInt32 (kACLTagKey, layout.mChannelLayoutTag))

        goto badadd;

    if (layout.mChannelBitmap && !dict.AddUInt32 (kACLBitmapKey, layout.mChannelBitmap))

        goto badadd;

    if (layout.mNumberChannelDescriptions)

    {   

        CFMutableArrayRef descs = CFArrayCreateMutable (NULL, layout.mNumberChannelDescriptions, &kCFTypeArrayCallBacks);

        const AudioChannelDescription *desc = layout.mChannelDescriptions;

        for (unsigned int i = 0; i < layout.mNumberChannelDescriptions; ++i, ++desc) 

        {

            CACFDictionary descDict (true);

            if (!descDict.AddUInt32 (kACLLabelKey, desc->mChannelLabel))

                { CFRelease (descs); goto badadd; }

            if (!descDict.AddUInt32 (kACLFlagsKey, desc->mChannelFlags))

                { CFRelease (descs); goto badadd; }

            if (!descDict.AddFloat32 (kACLCoords0Key, desc->mCoordinates[0]))

                { CFRelease (descs); goto badadd; }

            if (!descDict.AddFloat32 (kACLCoords1Key, desc->mCoordinates[1]))

                { CFRelease (descs); goto badadd; }

            if (!descDict.AddFloat32 (kACLCoords2Key, desc->mCoordinates[2]))

                { CFRelease (descs); goto badadd; }

            CFArrayAppendValue (descs, descDict.AsPropertyList());

        }

        dict.AddArray (kACLDescsKey, descs);

        CFRelease (descs);

    }

    *outData = dict.GetDict();  

    return noErr;

badadd:

    dict.ShouldRelease(true);

    return paramErr;

}

OSStatus    CAAudioChannelLayout::Restore (CFPropertyListRef &inData) 

{

    if (CFGetTypeID (inData) != CFDictionaryGetTypeID()) return paramErr;

    CACFDictionary dict(static_cast<CFDictionaryRef>(inData), false);

    RefCountedLayout *temp = NULL;

    AudioChannelLayout* layout;

    CFArrayRef descs = NULL;

    UInt32 numDescs = 0;

    if (dict.GetArray (kACLDescsKey, descs)) {

        numDescs = static_cast<OSStatus>(CFArrayGetCount (descs));

    }

    temp = RefCountedLayout::CreateWithNumberChannelDescriptions(numDescs);

    layout = temp->GetLayout();

    if (!dict.GetUInt32 (kACLTagKey, layout->mChannelLayoutTag))

        goto badget;

    if (dict.HasKey (kACLBitmapKey)) {

        if (!dict.GetUInt32 (kACLBitmapKey, layout->mChannelBitmap))

            goto badget;

    } else

        layout->mChannelBitmap = 0;

    layout->mNumberChannelDescriptions = numDescs;

    if (numDescs)

    {

        AudioChannelDescription *desc = layout->mChannelDescriptions;

        for (unsigned int i = 0; i < numDescs; ++i, ++desc)

        {

            CFDictionaryRef descDict = (CFDictionaryRef)CFArrayGetValueAtIndex (descs, i);          

            CACFDictionary theDesc (descDict, false);

            if (!theDesc.GetUInt32 (kACLLabelKey, desc->mChannelLabel))

                goto badget;

            if (!theDesc.GetUInt32 (kACLFlagsKey, desc->mChannelFlags))

                goto badget;

            if (!theDesc.GetFloat32 (kACLCoords0Key, desc->mCoordinates[0]))

                goto badget;

            if (!theDesc.GetFloat32 (kACLCoords1Key, desc->mCoordinates[1]))

                goto badget;

            if (!theDesc.GetFloat32 (kACLCoords2Key, desc->mCoordinates[2]))

                goto badget;

        }

    }

    if (mLayout)

        mLayout->release();

    mLayout = temp;

    return noErr;

badget:

    delete temp;

    return paramErr;

}

#pragma mark __AudioUnitParameter

static const CFStringRef kAUScopeStr = CFSTR("scope");

static const CFStringRef kAUElementIDStr = CFSTR("element ID");

static const CFStringRef kAUParameterIDStr = CFSTR("paramID");

void        CAAUParameter::Save (CFPropertyListRef &outData) const 

{ 

    return CAAUParameter::Save (*this, outData); 

}

// static functions to save/restore AudioUnitParameter

void        CAAUParameter::Save (const AudioUnitParameter &inParam, CFPropertyListRef &outData)

{

    CACFDictionary dict(false);

    dict.AddUInt32 (kAUScopeStr, inParam.mScope);

    dict.AddUInt32 (kAUElementIDStr, inParam.mElement);

    dict.AddUInt32 (kAUParameterIDStr, inParam.mParameterID);

    outData = dict.AsPropertyList();

}

OSStatus    CAAUParameter::Restore  (const CFPropertyListRef inData, AudioUnitParameter &outParam)

{

    if (CFGetTypeID (inData) != CFDictionaryGetTypeID()) return paramErr;

    CACFDictionary dict(static_cast<CFDictionaryRef>(inData), false);

    if (!dict.GetUInt32 (kAUScopeStr, outParam.mScope)) return paramErr;

    if (!dict.GetUInt32 (kAUElementIDStr, outParam.mElement)) return paramErr;

    if (!dict.GetUInt32 (kAUParameterIDStr, outParam.mParameterID)) return paramErr;

    return noErr;

}

#pragma mark __MIDIMap

const CFStringRef kParamMIDIStr = CFSTR("param maps");

const CFStringRef kMIDIFlagsStr = CFSTR("flags");

const CFStringRef kMIDISubMinStr = CFSTR("sub min");

const CFStringRef kMIDISubMaxStr = CFSTR("sub max");

const CFStringRef kMIDIStatusStr = CFSTR("midi status byte");

const CFStringRef kMIDIDataByteStr = CFSTR("midi data1 byte");

const CFStringRef kAUStr = CFSTR("unit");

static const CFStringRef kLocalElementIDStr = CFSTR("element ID");

static const CFStringRef kLocalScopeStr = CFSTR("scope");

static const CFStringRef kLocalParameterIDStr = CFSTR("paramID");

void CAAUMIDIMap::Save(CFPropertyListRef &outData) const

{

    CACFDictionary paramDict(false);

    paramDict.AddUInt32 (kLocalScopeStr, mScope);

    paramDict.AddUInt32 (kLocalElementIDStr, mElement);

    paramDict.AddUInt32 (kLocalParameterIDStr, mParameterID);

    paramDict.AddUInt32 (kMIDIFlagsStr, mFlags);

    paramDict.AddFloat32 (kMIDISubMinStr, mSubRangeMin);

    paramDict.AddFloat32 (kMIDISubMaxStr, mSubRangeMax);

    UInt32 data = mStatus;

    paramDict.AddUInt32 (kMIDIStatusStr, data);

    data = mData1;

    paramDict.AddUInt32 (kMIDIDataByteStr, data);

    outData = paramDict.GetCFDictionary();

}

void CAAUMIDIMap::Restore(CFDictionaryRef inData)

{   

    CACFDictionary paramDict (inData, false);

    if (!paramDict.GetUInt32 (kLocalScopeStr, mScope)) return; 

    if (!paramDict.GetUInt32 (kLocalElementIDStr, mElement)) return; 

    if (!paramDict.GetUInt32 (kLocalParameterIDStr, mParameterID)) return; 

    if (!paramDict.GetUInt32 (kMIDIFlagsStr, mFlags)) return;

    if (!paramDict.GetFloat32 (kMIDISubMinStr, mSubRangeMin)) return; 

    if (!paramDict.GetFloat32 (kMIDISubMaxStr, mSubRangeMax)) return; 

    UInt32 data;        

    if (!paramDict.GetUInt32 (kMIDIStatusStr, data)) return;

    mStatus = data;

    if (!paramDict.GetUInt32 (kMIDIDataByteStr, data)) return; 

    mData1 = data;

}

void        CAAUMIDIMap::SaveAsMapPList (AudioUnit inUnit, const AUParameterMIDIMapping* inMappings, UInt32 inNumMappings, CFPropertyListRef &outData, CFStringRef inName)

{

    CACFDictionary mappingDict (false); 

    CACFArray maps (true);

    for (UInt32 i = 0; i< inNumMappings; ++i) 

    {

        CFPropertyListRef data;

        CAAUMIDIMap paramMap(inMappings[i]);

        paramMap.Save (data);

        if (data) 

        {

            maps.AppendCFType (data); 

            CFRelease(data); 

        }               

    }

    if (maps.GetNumberItems()) {

        mappingDict.AddCFType (kParamMIDIStr, maps.GetCFArray());

        // Add the AU info here - where this map came from

        CAAudioUnit au (inUnit);

        CFPropertyListRef data;

        au.Comp().Save (&data);

        mappingDict.AddCFType (kAUStr, data);

        CFRelease(data);

        if (!inName) inName = CFSTR("Untitled");

        mappingDict.AddString (CFSTR("name"), inName);

        mappingDict.AddUInt32 (CFSTR("version"), 1);

        outData = mappingDict.AsPropertyList();

    } else {

        mappingDict.ShouldRelease(true);

        outData = NULL;

    }

}

UInt32      CAAUMIDIMap::NumberOfMaps (const CFDictionaryRef inData)

{

    CACFDictionary dict (inData, false);

    if (dict.HasKey (kParamMIDIStr)) 

    {

        CFArrayRef cfArray;

        dict.GetArray (kParamMIDIStr, cfArray); 

        CACFArray array (cfArray, false);

        return array.GetNumberItems();

    }

    return 0;

}

void        CAAUMIDIMap::RestoreFromMapPList (const CFDictionaryRef inData, AUParameterMIDIMapping* outMappings, UInt32 inNumMappings)

{

    CACFDictionary dict (inData, false);

    if (dict.HasKey (kParamMIDIStr)) 

    {

        CFArrayRef cfArray;

        dict.GetArray (kParamMIDIStr, cfArray); 

        CACFArray array (cfArray, false);

        UInt32 count = array.GetNumberItems();

        if (count > inNumMappings)

            count = inNumMappings;

        for (unsigned int i = 0; i < count; ++i)

        {

            CFDictionaryRef paramsDictRef;

            if (!array.GetDictionary(i, paramsDictRef)) 

                return;

            CAAUMIDIMap parameterMap;

            parameterMap.Restore(paramsDictRef);

            outMappings[i] = parameterMap;

        }

    }

}