alternative new version of the AppleUtility library

1 files changed, 162 insertions, 0 deletions

diff --git a/libs/appleutility/CoreAudio105/CAAudioChannelLayout.h b/libs/appleutility/CoreAudio105/CAAudioChannelLayout.h
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+/*	Copyright: 	© Copyright 2005 Apple Computer, Inc. All rights reserved.
+
+	Disclaimer:	IMPORTANT:  This Apple software is supplied to you by Apple Computer, 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 AppleÕs
+			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 Computer, 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.
+*/
+/*=============================================================================
+	CAAudioChannelLayout.h
+
+=============================================================================*/
+#if !defined(__CAAudioChannelLayout_h__)
+#define __CAAudioChannelLayout_h__
+
+//=============================================================================
+//	Includes
+//=============================================================================
+
+//	System Includes
+#if !defined(__COREAUDIO_USE_FLAT_INCLUDES__)
+	#include <CoreAudio/CoreAudioTypes.h>
+	#include <CoreFoundation/CoreFoundation.h>
+#else
+	#include <CoreAudioTypes.h>
+	#include <CoreFoundation.h>
+#endif
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#if !HAL_Build
+	#include "CAReferenceCounted.h"
+#endif
+
+//=============================================================================
+//	CAAudioChannelLayout
+//=============================================================================
+
+bool	operator== (const AudioChannelLayout &x, const AudioChannelLayout &y);
+
+extern "C" void 	CAShowAudioChannelLayout (FILE* file, const AudioChannelLayout *layout);
+
+class CAAudioChannelLayout
+{
+//	static Construction/Destruction
+public:
+	static AudioChannelLayout*	Create(UInt32 inNumberChannelDescriptions);
+	static void					Destroy(AudioChannelLayout* inChannelLayout);
+	static UInt32				CalculateByteSize(UInt32 inNumberChannelDescriptions) {
+									return offsetof(AudioChannelLayout, mChannelDescriptions) + inNumberChannelDescriptions * sizeof(AudioChannelDescription);
+								}
+	static void					SetAllToUnknown(AudioChannelLayout& outChannelLayout, UInt32 inNumberChannelDescriptions);
+	static UInt32				NumberChannels(const AudioChannelLayout& inLayout);
+
+#if !HAL_Build
+// object methods
+public:
+								CAAudioChannelLayout ();
+
+								CAAudioChannelLayout (UInt32 inNumberChannels, bool inChooseSurround);
+									// if inChooseSurround is false, then symmetrical speaker arrangements
+									// are chosen in place of surround layouts if there is a choice
+									// This call chooses layouts based on the expected defaults in
+									// AudioUnit usage
+								CAAudioChannelLayout (AudioChannelLayoutTag inTag);
+								CAAudioChannelLayout (const CAAudioChannelLayout &c);
+								CAAudioChannelLayout (const AudioChannelLayout* inChannelLayout);
+								~CAAudioChannelLayout();
+
+	CAAudioChannelLayout&		operator= (const AudioChannelLayout* inChannelLayout);
+	CAAudioChannelLayout&		operator= (const CAAudioChannelLayout& c);
+	bool						operator== (const CAAudioChannelLayout &c) const;
+
+	void						SetWithTag(AudioChannelLayoutTag inTag);
+
+	bool						IsValid() const { return NumberChannels() > 0; }
+	UInt32						Size() const { return mLayoutHolder ? mLayoutHolder->Size() : 0; }
+
+	UInt32						NumberChannels() const { return NumberChannels(Layout()); }
+
+	AudioChannelLayoutTag		Tag() const { return Layout().mChannelLayoutTag; }
+	const AudioChannelLayout&	Layout() const { return mLayoutHolder->Layout(); }
+	operator const AudioChannelLayout *() const { return &Layout(); }
+
+	void						Print () const { Print (stdout); }
+	void						Print (FILE* file) const;
+
+	OSStatus					Save (CFPropertyListRef *outData) const;
+	OSStatus					Restore (CFPropertyListRef &inData);
+
+private:
+	class ACLRefCounter : public CAReferenceCounted {
+	public:
+				ACLRefCounter (UInt32 inDataSize)
+				{
+					if (inDataSize < offsetof(AudioChannelLayout, mChannelDescriptions))
+						inDataSize = offsetof(AudioChannelLayout, mChannelDescriptions);
+
+					mLayout = static_cast<AudioChannelLayout*>(malloc (inDataSize));
+					memset (mLayout, 0, inDataSize);
+					mByteSize = inDataSize;
+				}
+
+		const AudioChannelLayout & 	Layout() const { return *mLayout; }
+
+		UInt32						Size () const { return mByteSize; }
+
+	private:
+		AudioChannelLayout 	*mLayout;
+		UInt32				mByteSize;
+
+			// only the constructors can change the actual state of the layout
+		friend CAAudioChannelLayout::CAAudioChannelLayout (UInt32 inNumberChannels, bool inChooseSurround);
+		friend OSStatus CAAudioChannelLayout::Restore (CFPropertyListRef &inData);
+		friend CAAudioChannelLayout& CAAudioChannelLayout::operator= (const AudioChannelLayout* inChannelLayout);
+		friend void CAAudioChannelLayout::SetWithTag(AudioChannelLayoutTag inTag);
+
+		AudioChannelLayout * 	GetLayout() { return mLayout; }
+		~ACLRefCounter() { if (mLayout) { free(mLayout); mLayout = NULL; } }
+
+	private:
+		ACLRefCounter () : mLayout(NULL) { }
+		ACLRefCounter(const ACLRefCounter& other) : CAReferenceCounted (other), mLayout(NULL) { }
+		ACLRefCounter& operator=(const ACLRefCounter&) { return *this; }
+	};
+
+	ACLRefCounter				*mLayoutHolder;
+#endif	//	HAL_Build
+
+};
+
+#endif