{
 *  CVOpenGLBuffer.h
 *  CoreVideo
 *
 *  Copyright (c) 2004 Apple Computer, Inc. All rights reserved.
 *
 }
{  Pascal Translation:  Gorazd Krosl, <gorazd_1957@yahoo.ca>, 2009 }
{  Pascal Translation Update: Jonas Maebe <jonas@freepascal.org>, October 2012 } 
{  Pascal Translation Update: Jonas Maebe <jonas@freepascal.org>, August 2015 }
{
    Modified for use with Free Pascal
    Version 308
    Please report any bugs to <gpc@microbizz.nl>
}

{$ifc not defined MACOSALLINCLUDE or not MACOSALLINCLUDE}
{$mode macpas}
{$modeswitch cblocks}
{$packenum 1}
{$macro on}
{$inline on}
{$calling mwpascal}

unit CVOpenGLBuffer;
interface
{$setc UNIVERSAL_INTERFACES_VERSION := $0400}
{$setc GAP_INTERFACES_VERSION := $0308}

{$ifc not defined USE_CFSTR_CONSTANT_MACROS}
    {$setc USE_CFSTR_CONSTANT_MACROS := TRUE}
{$endc}

{$ifc defined CPUPOWERPC and defined CPUI386}
	{$error Conflicting initial definitions for CPUPOWERPC and CPUI386}
{$endc}
{$ifc defined FPC_BIG_ENDIAN and defined FPC_LITTLE_ENDIAN}
	{$error Conflicting initial definitions for FPC_BIG_ENDIAN and FPC_LITTLE_ENDIAN}
{$endc}

{$ifc not defined __ppc__ and defined CPUPOWERPC32}
	{$setc __ppc__ := 1}
{$elsec}
	{$setc __ppc__ := 0}
{$endc}
{$ifc not defined __ppc64__ and defined CPUPOWERPC64}
	{$setc __ppc64__ := 1}
{$elsec}
	{$setc __ppc64__ := 0}
{$endc}
{$ifc not defined __i386__ and defined CPUI386}
	{$setc __i386__ := 1}
{$elsec}
	{$setc __i386__ := 0}
{$endc}
{$ifc not defined __x86_64__ and defined CPUX86_64}
	{$setc __x86_64__ := 1}
{$elsec}
	{$setc __x86_64__ := 0}
{$endc}
{$ifc not defined __arm__ and defined CPUARM}
	{$setc __arm__ := 1}
{$elsec}
	{$setc __arm__ := 0}
{$endc}
{$ifc not defined __arm64__ and defined CPUAARCH64}
  {$setc __arm64__ := 1}
{$elsec}
  {$setc __arm64__ := 0}
{$endc}

{$ifc defined cpu64}
  {$setc __LP64__ := 1}
{$elsec}
  {$setc __LP64__ := 0}
{$endc}


{$ifc defined __ppc__ and __ppc__ and defined __i386__ and __i386__}
	{$error Conflicting definitions for __ppc__ and __i386__}
{$endc}

{$ifc defined __ppc__ and __ppc__}
	{$setc TARGET_CPU_PPC := TRUE}
	{$setc TARGET_CPU_PPC64 := FALSE}
	{$setc TARGET_CPU_X86 := FALSE}
	{$setc TARGET_CPU_X86_64 := FALSE}
	{$setc TARGET_CPU_ARM := FALSE}
	{$setc TARGET_CPU_ARM64 := FALSE}
	{$setc TARGET_OS_MAC := TRUE}
	{$setc TARGET_OS_IPHONE := FALSE}
	{$setc TARGET_IPHONE_SIMULATOR := FALSE}
	{$setc TARGET_OS_EMBEDDED := FALSE}
{$elifc defined __ppc64__ and __ppc64__}
	{$setc TARGET_CPU_PPC := FALSE}
	{$setc TARGET_CPU_PPC64 := TRUE}
	{$setc TARGET_CPU_X86 := FALSE}
	{$setc TARGET_CPU_X86_64 := FALSE}
	{$setc TARGET_CPU_ARM := FALSE}
	{$setc TARGET_CPU_ARM64 := FALSE}
	{$setc TARGET_OS_MAC := TRUE}
	{$setc TARGET_OS_IPHONE := FALSE}
	{$setc TARGET_IPHONE_SIMULATOR := FALSE}
	{$setc TARGET_OS_EMBEDDED := FALSE}
{$elifc defined __i386__ and __i386__}
	{$setc TARGET_CPU_PPC := FALSE}
	{$setc TARGET_CPU_PPC64 := FALSE}
	{$setc TARGET_CPU_X86 := TRUE}
	{$setc TARGET_CPU_X86_64 := FALSE}
	{$setc TARGET_CPU_ARM := FALSE}
	{$setc TARGET_CPU_ARM64 := FALSE}
{$ifc defined iphonesim}
 	{$setc TARGET_OS_MAC := FALSE}
	{$setc TARGET_OS_IPHONE := TRUE}
	{$setc TARGET_IPHONE_SIMULATOR := TRUE}
{$elsec}
	{$setc TARGET_OS_MAC := TRUE}
	{$setc TARGET_OS_IPHONE := FALSE}
	{$setc TARGET_IPHONE_SIMULATOR := FALSE}
{$endc}
	{$setc TARGET_OS_EMBEDDED := FALSE}
{$elifc defined __x86_64__ and __x86_64__}
	{$setc TARGET_CPU_PPC := FALSE}
	{$setc TARGET_CPU_PPC64 := FALSE}
	{$setc TARGET_CPU_X86 := FALSE}
	{$setc TARGET_CPU_X86_64 := TRUE}
	{$setc TARGET_CPU_ARM := FALSE}
	{$setc TARGET_CPU_ARM64 := FALSE}
{$ifc defined iphonesim}
 	{$setc TARGET_OS_MAC := FALSE}
	{$setc TARGET_OS_IPHONE := TRUE}
	{$setc TARGET_IPHONE_SIMULATOR := TRUE}
{$elsec}
	{$setc TARGET_OS_MAC := TRUE}
	{$setc TARGET_OS_IPHONE := FALSE}
	{$setc TARGET_IPHONE_SIMULATOR := FALSE}
{$endc}
	{$setc TARGET_OS_EMBEDDED := FALSE}
{$elifc defined __arm__ and __arm__}
	{$setc TARGET_CPU_PPC := FALSE}
	{$setc TARGET_CPU_PPC64 := FALSE}
	{$setc TARGET_CPU_X86 := FALSE}
	{$setc TARGET_CPU_X86_64 := FALSE}
	{$setc TARGET_CPU_ARM := TRUE}
	{$setc TARGET_CPU_ARM64 := FALSE}
	{$setc TARGET_OS_MAC := FALSE}
	{$setc TARGET_OS_IPHONE := TRUE}
	{$setc TARGET_IPHONE_SIMULATOR := FALSE}
	{$setc TARGET_OS_EMBEDDED := TRUE}
{$elifc defined __arm64__ and __arm64__}
	{$setc TARGET_CPU_PPC := FALSE}
	{$setc TARGET_CPU_PPC64 := FALSE}
	{$setc TARGET_CPU_X86 := FALSE}
	{$setc TARGET_CPU_X86_64 := FALSE}
	{$setc TARGET_CPU_ARM := FALSE}
	{$setc TARGET_CPU_ARM64 := TRUE}
{$ifc defined ios}
	{$setc TARGET_OS_MAC := FALSE}
	{$setc TARGET_OS_IPHONE := TRUE}
	{$setc TARGET_OS_EMBEDDED := TRUE}
{$elsec}
	{$setc TARGET_OS_MAC := TRUE}
	{$setc TARGET_OS_IPHONE := FALSE}
	{$setc TARGET_OS_EMBEDDED := FALSE}
{$endc}
	{$setc TARGET_IPHONE_SIMULATOR := FALSE}
{$elsec}
	{$error __ppc__ nor __ppc64__ nor __i386__ nor __x86_64__ nor __arm__ nor __arm64__ is defined.}
{$endc}

{$ifc defined __LP64__ and __LP64__ }
  {$setc TARGET_CPU_64 := TRUE}
{$elsec}
  {$setc TARGET_CPU_64 := FALSE}
{$endc}

{$ifc defined FPC_BIG_ENDIAN}
	{$setc TARGET_RT_BIG_ENDIAN := TRUE}
	{$setc TARGET_RT_LITTLE_ENDIAN := FALSE}
{$elifc defined FPC_LITTLE_ENDIAN}
	{$setc TARGET_RT_BIG_ENDIAN := FALSE}
	{$setc TARGET_RT_LITTLE_ENDIAN := TRUE}
{$elsec}
	{$error Neither FPC_BIG_ENDIAN nor FPC_LITTLE_ENDIAN are defined.}
{$endc}
{$setc ACCESSOR_CALLS_ARE_FUNCTIONS := TRUE}
{$setc CALL_NOT_IN_CARBON := FALSE}
{$setc OLDROUTINENAMES := FALSE}
{$setc OPAQUE_TOOLBOX_STRUCTS := TRUE}
{$setc OPAQUE_UPP_TYPES := TRUE}
{$setc OTCARBONAPPLICATION := TRUE}
{$setc OTKERNEL := FALSE}
{$setc PM_USE_SESSION_APIS := TRUE}
{$setc TARGET_API_MAC_CARBON := TRUE}
{$setc TARGET_API_MAC_OS8 := FALSE}
{$setc TARGET_API_MAC_OSX := TRUE}
{$setc TARGET_CARBON := TRUE}
{$setc TARGET_CPU_68K := FALSE}
{$setc TARGET_CPU_MIPS := FALSE}
{$setc TARGET_CPU_SPARC := FALSE}
{$setc TARGET_OS_UNIX := FALSE}
{$setc TARGET_OS_WIN32 := FALSE}
{$setc TARGET_RT_MAC_68881 := FALSE}
{$setc TARGET_RT_MAC_CFM := FALSE}
{$setc TARGET_RT_MAC_MACHO := TRUE}
{$setc TYPED_FUNCTION_POINTERS := TRUE}
{$setc TYPE_BOOL := FALSE}
{$setc TYPE_EXTENDED := FALSE}
{$setc TYPE_LONGLONG := TRUE}
uses MacTypes,CFBase,CFString,CFDictionary,CVReturns,CVImageBuffer,CGLTypes,macgl;
{$endc} {not MACOSALLINCLUDE}


{$ifc TARGET_OS_MAC}
 
{$ALIGN POWER}

 {! @header CVOpenGLBuffer.h
	@copyright 2004 Apple Computer, Inc. All rights reserved.
	@availability Mac OS X 10.4 or later
    @discussion A CoreVideo buffer derives from a generic buffer and can be an ImageBuffer or PixelBuffer. 
		   
}


var kCVOpenGLBufferWidth: CFStringRef; external name '_kCVOpenGLBufferWidth'; (* attribute const *)
(* AVAILABLE_MAC_OS_X_VERSION_10_4_AND_LATER *)
var kCVOpenGLBufferHeight: CFStringRef; external name '_kCVOpenGLBufferHeight'; (* attribute const *)
(* AVAILABLE_MAC_OS_X_VERSION_10_4_AND_LATER *)
var kCVOpenGLBufferTarget: CFStringRef; external name '_kCVOpenGLBufferTarget'; (* attribute const *)
(* AVAILABLE_MAC_OS_X_VERSION_10_4_AND_LATER *)
var kCVOpenGLBufferInternalFormat: CFStringRef; external name '_kCVOpenGLBufferInternalFormat'; (* attribute const *)
(* AVAILABLE_MAC_OS_X_VERSION_10_4_AND_LATER *)
var kCVOpenGLBufferMaximumMipmapLevel: CFStringRef; external name '_kCVOpenGLBufferMaximumMipmapLevel'; (* attribute const *)
(* AVAILABLE_MAC_OS_X_VERSION_10_4_AND_LATER *)

type
	CVOpenGLBufferRef = CVImageBufferRef;

function CVOpenGLBufferGetTypeID: CFTypeID; external name '_CVOpenGLBufferGetTypeID';
(* AVAILABLE_MAC_OS_X_VERSION_10_4_AND_LATER *)

{!
    @function   CVOpenGLBufferRetain
    @abstract   Retains a CVOpenGLBuffer object
    @discussion Equivalent to CFRetain, but NULL safe
    @param      buffer A CVOpenGLBuffer object that you want to retain.
    @result     A CVOpenGLBuffer object that is the same as the passed in buffer.
}
function CVOpenGLBufferRetain( buffer: CVOpenGLBufferRef ): CVOpenGLBufferRef; external name '_CVOpenGLBufferRetain';
(* AVAILABLE_MAC_OS_X_VERSION_10_4_AND_LATER *)

{!
    @function   CVOpenGLBufferRelease
    @abstract   Releases a CVOpenGLBuffer object
    @discussion Equivalent to CFRelease, but NULL safe
    @param      buffer A CVOpenGLBuffer object that you want to release.
}
procedure CVOpenGLBufferRelease( buffer: CVOpenGLBufferRef ); external name '_CVOpenGLBufferRelease';
(* AVAILABLE_MAC_OS_X_VERSION_10_4_AND_LATER *)

{!
    @function   CVOpenGLBufferCreate
    @abstract   Create a new CVOpenGLBuffer that may be used for OpenGL rendering purposes
    @param      width The width of the buffer in pixels
    @param      height The height of the buffer in pixels
    @param      attributes A CFDictionaryRef containing other desired attributes of the buffer (texture target, internal format, max mipmap level, etc.).
		May be NULL.  Defaults are GL_TEXTURE_RECTANGLE_EXT, GL_RGBA, and 0 for kCVOpenGLBufferTarget, kCVOpenGLBufferInternalFormat and kCVOpenGLBufferMaximumMipmapLevel,
		respectively.
    @param      bufferOut    The newly created buffer will be placed here.
    @result     kCVReturnSuccess if the attachment succeeded
}
function CVOpenGLBufferCreate( allocator: CFAllocatorRef; width: size_t; height: size_t; attributes: CFDictionaryRef; var bufferOut: CVOpenGLBufferRef ): CVReturn; external name '_CVOpenGLBufferCreate';
(* AVAILABLE_MAC_OS_X_VERSION_10_4_AND_LATER *)

{!
    @function   CVOpenGLBufferGetAttributes
    @param      openGLBuffer Target OpenGL Buffer.
    @result     CVOpenGLBuffer attributes dictionary, NULL if not set.
}
function CVOpenGLBufferGetAttributes( openGLBuffer: CVOpenGLBufferRef ): CFDictionaryRef; external name '_CVOpenGLBufferGetAttributes';
(* AVAILABLE_MAC_OS_X_VERSION_10_4_AND_LATER *)

{!
    @function   CVOpenGLBufferAttach
    @param      openGLBuffer The buffer you wish to attach a GL context to
    @param      cglContext   The CGLContextObj you wish to attach
    @param      face	     The target GL face enum (0 for non cube maps)
    @param      level        The mipmap level index you wish to attach to
    @param      screen       The virtual screen number you want to use
    @result     kCVReturnSuccess if the attachment succeeded
}
function CVOpenGLBufferAttach( openGLBuffer: CVOpenGLBufferRef; cglContext: CGLContextObj; face: GLenum; level: GLint; screen: GLint ): CVReturn; external name '_CVOpenGLBufferAttach';
(* AVAILABLE_MAC_OS_X_VERSION_10_4_AND_LATER *)

{$endc}	// TARGET_OS_MAC
{$ifc not defined MACOSALLINCLUDE or not MACOSALLINCLUDE}

end.
{$endc} {not MACOSALLINCLUDE}
