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+/*
+ *  CVImageBuffer.h
+ *  CoreVideo
+ *
+ *  Copyright (c) 2004 Apple Computer, Inc. All rights reserved.
+ *
+ */
+ 
+ /*! @header CVImageBuffer.h
+	@copyright 2004 Apple Computer, Inc. All rights reserved.
+	@availability Mac OS X 10.4 or later
+    @discussion CVImageBufferRef types are abstract and define various attachments and convenience
+		calls for retreiving image related bits of data.
+		   
+*/
+
+#if !defined(__COREVIDEO_CVIMAGEBUFFER_H__)
+#define __COREVIDEO_CVIMAGEBUFFER_H__ 1
+
+#include <TargetConditionals.h>
+
+#if TARGET_OS_MAC
+#include <ApplicationServices/ApplicationServices.h>
+#include <QuartzCore/CVBuffer.h>
+#else
+#pragma warning (disable: 4068)		// ignore unknown pragmas
+#include <CVBuffer.h>
+#include <CGGeometry.h>
+#endif
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+#pragma mark CVImageBufferRef attachment keys
+
+#if TARGET_OS_MAC
+CV_EXPORT const CFStringRef kCVImageBufferCGColorSpaceKey AVAILABLE_MAC_OS_X_VERSION_10_4_AND_LATER;				// CGColorSpaceRef
+
+CV_EXPORT const CFStringRef kCVImageBufferCleanApertureKey AVAILABLE_MAC_OS_X_VERSION_10_4_AND_LATER;				// CFDictionary containing the following four keys
+CV_EXPORT const CFStringRef	kCVImageBufferCleanApertureWidthKey AVAILABLE_MAC_OS_X_VERSION_10_4_AND_LATER;			// CFNumber
+CV_EXPORT const CFStringRef	kCVImageBufferCleanApertureHeightKey AVAILABLE_MAC_OS_X_VERSION_10_4_AND_LATER;			// CFNumber
+CV_EXPORT const CFStringRef	kCVImageBufferCleanApertureHorizontalOffsetKey AVAILABLE_MAC_OS_X_VERSION_10_4_AND_LATER;		// CFNumber
+CV_EXPORT const CFStringRef	kCVImageBufferCleanApertureVerticalOffsetKey AVAILABLE_MAC_OS_X_VERSION_10_4_AND_LATER;		// CFNumber
+CV_EXPORT const CFStringRef kCVImageBufferPreferredCleanApertureKey AVAILABLE_MAC_OS_X_VERSION_10_4_AND_LATER;			// CFDictionary containing same keys as kCVImageBufferCleanApertureKey
+
+CV_EXPORT const CFStringRef kCVImageBufferFieldCountKey AVAILABLE_MAC_OS_X_VERSION_10_4_AND_LATER;				// CFNumber
+CV_EXPORT const CFStringRef kCVImageBufferFieldDetailKey AVAILABLE_MAC_OS_X_VERSION_10_4_AND_LATER;				// CFString with one of the following four values
+CV_EXPORT const CFStringRef	kCVImageBufferFieldDetailTemporalTopFirst AVAILABLE_MAC_OS_X_VERSION_10_4_AND_LATER;		// CFString
+CV_EXPORT const CFStringRef	kCVImageBufferFieldDetailTemporalBottomFirst AVAILABLE_MAC_OS_X_VERSION_10_4_AND_LATER;		// CFString
+CV_EXPORT const CFStringRef	kCVImageBufferFieldDetailSpatialFirstLineEarly AVAILABLE_MAC_OS_X_VERSION_10_4_AND_LATER;		// CFString
+CV_EXPORT const CFStringRef	kCVImageBufferFieldDetailSpatialFirstLineLate AVAILABLE_MAC_OS_X_VERSION_10_4_AND_LATER;		// CFString
+
+CV_EXPORT const CFStringRef kCVImageBufferPixelAspectRatioKey AVAILABLE_MAC_OS_X_VERSION_10_4_AND_LATER;				// CFDictionary with the following two keys
+CV_EXPORT const CFStringRef	kCVImageBufferPixelAspectRatioHorizontalSpacingKey AVAILABLE_MAC_OS_X_VERSION_10_4_AND_LATER;	// CFNumber
+CV_EXPORT const CFStringRef	kCVImageBufferPixelAspectRatioVerticalSpacingKey AVAILABLE_MAC_OS_X_VERSION_10_4_AND_LATER;	// CFNumber
+
+CV_EXPORT const CFStringRef kCVImageBufferDisplayDimensionsKey AVAILABLE_MAC_OS_X_VERSION_10_4_AND_LATER;				// CFDictionary with the following two keys
+CV_EXPORT const CFStringRef	kCVImageBufferDisplayWidthKey AVAILABLE_MAC_OS_X_VERSION_10_4_AND_LATER;				// CFNumber
+CV_EXPORT const CFStringRef	kCVImageBufferDisplayHeightKey AVAILABLE_MAC_OS_X_VERSION_10_4_AND_LATER;				// CFNumber
+
+CV_EXPORT const CFStringRef kCVImageBufferGammaLevelKey AVAILABLE_MAC_OS_X_VERSION_10_4_AND_LATER;				// CFNumber describing the gamma level
+CV_EXPORT const CFStringRef kCVImageBufferYCbCrMatrixKey AVAILABLE_MAC_OS_X_VERSION_10_4_AND_LATER;				// CFString describing the color matrix for YCbCr->RGB. This key can be one of the following values:
+CV_EXPORT const CFStringRef	kCVImageBufferYCbCrMatrix_ITU_R_709_2 AVAILABLE_MAC_OS_X_VERSION_10_4_AND_LATER;			// CFString
+CV_EXPORT const CFStringRef	kCVImageBufferYCbCrMatrix_ITU_R_601_4 AVAILABLE_MAC_OS_X_VERSION_10_4_AND_LATER;			// CFString
+CV_EXPORT const CFStringRef	kCVImageBufferYCbCrMatrix_SMPTE_240M_1995 AVAILABLE_MAC_OS_X_VERSION_10_4_AND_LATER;		// CFString
+
+#else
+#define kCVImageBufferCGColorSpaceKey			CFSTR("CGColorSpace")
+
+#define kCVImageBufferCleanApertureKey			CFSTR("CVCleanAperture")
+#define kCVImageBufferCleanApertureWidthKey		    CFSTR("Width")
+#define kCVImageBufferCleanApertureHeightKey		    CFSTR("Height")
+#define kCVImageBufferCleanApertureHorizontalOffsetKey	    CFSTR("HorizontalOffset")
+#define kCVImageBufferCleanApertureVerticalOffsetKey	    CFSTR("VerticalOffset")
+#define kCVImageBufferPreferredCleanApertureKey		CFSTR("CVPreferredCleanAperture")
+
+#define kCVImageBufferFieldCountKey			CFSTR("CVFieldCount")
+#define kCVImageBufferFieldDetailKey			CFSTR("CVFieldDetail")
+#define kCVImageBufferFieldDetailTemporalTopFirst	    CFSTR("TemporalTopFirst")
+#define kCVImageBufferFieldDetailTemporalBottomFirst	    CFSTR("TemporalBottomFirst")
+#define kCVImageBufferFieldDetailSpatialFirstLineEarly	    CFSTR("SpatialFirstLineEarly")
+#define kCVImageBufferFieldDetailSpatialFirstLineLate	    CFSTR("SpatialFirstLineLate")
+
+#define kCVImageBufferPixelAspectRatioKey		CFSTR("CVPixelAspectRatio")
+#define kCVImageBufferPixelAspectRatioHorizontalSpacingKey	CFSTR("HorizontalSpacing")
+#define kCVImageBufferPixelAspectRatioVerticalSpacingKey	CFSTR("VerticalSpacing")
+
+#define kCVImageBufferDisplayDimensionsKey		CFSTR("CVDisplayDimensions")
+#define kCVImageBufferDisplayWidthKey			    CFSTR("Width")
+#define kCVImageBufferDisplayHeightKey			    CFSTR("Height")
+
+
+#define kCVImageBufferGammaLevelKey			CFSTR("CVImageBufferGammaLevel")
+#define kCVImageBufferYCbCrMatrixKey			CFSTR("CVImageBufferYCbCrMatrix")
+#define kCVImageBufferYCbCrMatrix_ITU_R_709_2			CFSTR("CVImageBufferYCbCrMatrix_ITU_R_709_2")
+#define kCVImageBufferYCbCrMatrix_ITU_R_601_4			CFSTR("CVImageBufferYCbCrMatrix_ITU_R_601_4")
+#define kCVImageBufferYCbCrMatrix_SMPTE_240M_1995		CFSTR("CVImageBufferYCbCrMatrix_SMPTE_240M_1995")
+
+#endif
+
+#pragma mark CVImageBufferRef
+
+/*!
+    @typedef	CVImageBufferRef
+    @abstract   Base type for all CoreVideo image buffers
+
+*/
+typedef CVBufferRef CVImageBufferRef;
+
+/*!
+    @function   CVImageBufferGetEncodedSize
+    @abstract   Returns the full encoded dimensions of a CVImageBuffer.  For example, for an NTSC DV frame this would be 720x480
+    @discussion Note: When creating a CIImage from a CVImageBuffer, this is the call you should use for retrieving the image size.
+    @param      imageBuffer A CVImageBuffer that you wish to retrieve the encoded size from.
+    @result     A CGSize returning the full encoded size of the buffer
+		Returns zero size if called with a non-CVImageBufferRef type or NULL.
+*/
+CV_EXPORT CGSize CVImageBufferGetEncodedSize(CVImageBufferRef imageBuffer) AVAILABLE_MAC_OS_X_VERSION_10_4_AND_LATER;
+
+/*!
+    @function   CVImageBufferGetDisplaySize
+    @abstract   Returns the nominal output display size (in square pixels) of a CVImageBuffer.  
+                For example, for an NTSC DV frame this would be 640x480
+    @param      imageBuffer A CVImageBuffer that you wish to retrieve the display size from.
+    @result     A CGSize returning the nominal display size of the buffer
+		Returns zero size if called with a non-CVImageBufferRef type or NULL.
+*/
+CV_EXPORT CGSize CVImageBufferGetDisplaySize(CVImageBufferRef imageBuffer) AVAILABLE_MAC_OS_X_VERSION_10_4_AND_LATER;
+
+/*!
+    @function   CVImageBufferGetCleanRect
+    @abstract   Returns the source rectangle of a CVImageBuffer that represents the clean aperture
+		of the buffer in encoded pixels.    For example, an NTSC DV frame would return a CGRect with an
+		origin of 8,0 and a size of 704,480.		
+		Note that the origin of this rect always the lower left	corner.   This is the same coordinate system as
+		used by CoreImage.
+    @param      imageBuffer A CVImageBuffer that you wish to retrieve the display size from.
+    @result     A CGSize returning the nominal display size of the buffer
+		Returns zero rect if called with a non-CVImageBufferRef type or NULL.
+*/
+CV_EXPORT CGRect CVImageBufferGetCleanRect(CVImageBufferRef imageBuffer) AVAILABLE_MAC_OS_X_VERSION_10_4_AND_LATER;
+
+#if TARGET_OS_MAC
+/*!
+    @function   CVImageBufferGetColorSpace
+    @abstract   Returns the color space of a CVImageBuffer.
+    @param      imageBuffer A CVImageBuffer that you wish to retrieve the color space from.
+    @result     A CGColorSpaceRef representing the color space of the buffer.
+		Returns NULL if called with a non-CVImageBufferRef type or NULL.
+*/
+CV_EXPORT CGColorSpaceRef CVImageBufferGetColorSpace(CVImageBufferRef imageBuffer) AVAILABLE_MAC_OS_X_VERSION_10_4_AND_LATER;
+#endif
+
+#if defined(__cplusplus)
+}
+#endif
+
+#endif