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+/*
+     File: CAAudioFileFormats.h
+ Abstract: Part of CoreAudio Utility Classes
+  Version: 1.1
+ 
+ Disclaimer: IMPORTANT:  This Apple software is supplied to you by Apple
+ Inc. ("Apple") in consideration of your agreement to the following
+ terms, and your use, installation, modification or redistribution of
+ this Apple software constitutes acceptance of these terms.  If you do
+ not agree with these terms, please do not use, install, modify or
+ redistribute this Apple software.
+ 
+ In consideration of your agreement to abide by the following terms, and
+ subject to these terms, Apple grants you a personal, non-exclusive
+ license, under Apple's copyrights in this original Apple software (the
+ "Apple Software"), to use, reproduce, modify and redistribute the Apple
+ Software, with or without modifications, in source and/or binary forms;
+ provided that if you redistribute the Apple Software in its entirety and
+ without modifications, you must retain this notice and the following
+ text and disclaimers in all such redistributions of the Apple Software.
+ Neither the name, trademarks, service marks or logos of Apple Inc. may
+ be used to endorse or promote products derived from the Apple Software
+ without specific prior written permission from Apple.  Except as
+ expressly stated in this notice, no other rights or licenses, express or
+ implied, are granted by Apple herein, including but not limited to any
+ patent rights that may be infringed by your derivative works or by other
+ works in which the Apple Software may be incorporated.
+ 
+ The Apple Software is provided by Apple on an "AS IS" basis.  APPLE
+ MAKES NO WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION
+ THE IMPLIED WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY AND FITNESS
+ FOR A PARTICULAR PURPOSE, REGARDING THE APPLE SOFTWARE OR ITS USE AND
+ OPERATION ALONE OR IN COMBINATION WITH YOUR PRODUCTS.
+ 
+ IN NO EVENT SHALL APPLE BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL
+ OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ INTERRUPTION) ARISING IN ANY WAY OUT OF THE USE, REPRODUCTION,
+ MODIFICATION AND/OR DISTRIBUTION OF THE APPLE SOFTWARE, HOWEVER CAUSED
+ AND WHETHER UNDER THEORY OF CONTRACT, TORT (INCLUDING NEGLIGENCE),
+ STRICT LIABILITY OR OTHERWISE, EVEN IF APPLE HAS BEEN ADVISED OF THE
+ POSSIBILITY OF SUCH DAMAGE.
+ 
+ Copyright (C) 2014 Apple Inc. All Rights Reserved.
+ 
+*/
+#ifndef __CAAudioFileFormats_h__
+#define __CAAudioFileFormats_h__
+
+#if !defined(__COREAUDIO_USE_FLAT_INCLUDES__)
+	#include <AudioToolbox/AudioToolbox.h>
+#else
+	#include <AudioToolbox.h>
+#endif
+#include "CAStreamBasicDescription.h"
+
+class CAAudioFileFormats {
+public:
+	enum { noErr = 0 };
+
+	struct DataFormatInfo {
+		DataFormatInfo() : mVariants(NULL) { }
+		~DataFormatInfo() { delete[] mVariants; }
+		
+		UInt32							mFormatID;
+		int								mNumVariants;
+		AudioStreamBasicDescription *	mVariants;
+		bool							mReadable;
+		bool							mWritable;
+		bool							mEitherEndianPCM;
+
+#if DEBUG
+		void	DebugPrint();
+#endif
+	};
+	
+	struct FileFormatInfo {
+		FileFormatInfo() : mFileTypeName(NULL), mExtensions(NULL), mDataFormats(NULL) { }
+		~FileFormatInfo() {
+			delete[] mDataFormats;
+			if (mFileTypeName)
+				CFRelease(mFileTypeName);
+			if (mExtensions)
+				CFRelease(mExtensions);
+		}
+		
+		AudioFileTypeID					mFileTypeID;
+		CFStringRef						mFileTypeName;
+		CFArrayRef						mExtensions;
+		int								mNumDataFormats;
+		DataFormatInfo *				mDataFormats;		// NULL until loaded!
+		
+		int		NumberOfExtensions() { return static_cast<int>(mExtensions ? CFArrayGetCount(mExtensions) : 0); }
+		char *	GetExtension(int index, char *buf, int buflen) {
+					CFStringRef cfext = (CFStringRef)CFArrayGetValueAtIndex(mExtensions, index);
+					CFStringGetCString(cfext, buf, buflen, kCFStringEncodingUTF8);
+					return buf;
+				}
+		bool	MatchExtension(CFStringRef testExt) {	// testExt should not include "."
+					CFIndex n = NumberOfExtensions();
+					for (CFIndex i = 0; i < n; ++i) {
+						CFStringRef ext = (CFStringRef)CFArrayGetValueAtIndex(mExtensions, i);
+						if (CFStringCompare(ext, testExt, kCFCompareCaseInsensitive) == kCFCompareEqualTo)
+							return true;
+					}
+					return false;
+				}
+		bool	AnyWritableFormats();
+		void	LoadDataFormats();
+		
+#if DEBUG
+		void	DebugPrint();
+#endif
+	};
+	
+private:	// use Instance()
+	CAAudioFileFormats(bool loadDataFormats);
+	~CAAudioFileFormats();
+public:
+	
+	bool	InferDataFormatFromFileFormat(AudioFileTypeID filetype, CAStreamBasicDescription &fmt);
+	
+	bool	InferFileFormatFromFilename(const char *filename, AudioFileTypeID &filetype);
+
+	bool	InferFileFormatFromFilename(CFStringRef filename, AudioFileTypeID &filetype);
+
+	bool	InferFileFormatFromDataFormat(const CAStreamBasicDescription &fmt, AudioFileTypeID &filetype);
+
+	bool	IsKnownDataFormat(UInt32 dataFormat);
+	
+#if DEBUG
+	void	DebugPrint();
+#endif
+
+	int					mNumFileFormats;
+	FileFormatInfo	*	mFileFormats;
+	
+	FileFormatInfo *	FindFileFormat(UInt32 formatID);
+
+	static CAAudioFileFormats *	Instance(bool loadDataFormats=true);
+
+private:	
+	static CAAudioFileFormats *	sInstance;
+};
+
+char *	OSTypeToStr(char *buf, size_t bufsize, UInt32 t);
+int		StrToOSType(const char *str, UInt32 &t);
+
+#endif // __CAAudioFileFormats_h__