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- {==================================================================================================
- File: CoreAudio/HostTime.h
- Contains: Routines for accessing the host's time base
- Copyright: (c) 1985-2010 by Apple, Inc., all rights reserved.
- Bugs?: For bug reports, consult the following page on
- the World Wide Web:
- http://bugs.freepascal.org
- ==================================================================================================}
- { Pascal Translation: Gale R Paeper, <[email protected]>, 2006 }
- { Pascal Translation Updated: Jonas Maebe, <[email protected]>, October 2009 }
- { Pascal Translation Updated: Jonas Maebe, <[email protected]>, October 2012 }
- {
- Modified for use with Free Pascal
- Version 308
- Please report any bugs to <[email protected]>
- }
- {$ifc not defined MACOSALLINCLUDE or not MACOSALLINCLUDE}
- {$mode macpas}
- {$packenum 1}
- {$macro on}
- {$inline on}
- {$calling mwpascal}
- unit HostTime;
- 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}
- {$setc TARGET_CPU_ARM64 := FALSE}
- { will require compiler define when/if other Apple devices with ARM cpus ship }
- {$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}
- { will require compiler define when/if other Apple devices with ARM cpus ship }
- {$setc TARGET_OS_MAC := FALSE}
- {$setc TARGET_OS_IPHONE := TRUE}
- {$setc TARGET_IPHONE_SIMULATOR := FALSE}
- {$setc TARGET_OS_EMBEDDED := TRUE}
- {$elsec}
- {$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}
- {$setc TYPE_LONGLONG := TRUE}
- uses MacTypes,CoreAudioTypes;
- {$endc} {not MACOSALLINCLUDE}
- {$ALIGN POWER}
- //==================================================================================================
- //#pragma mark Theory of Operation
- {!
- @header HostTime
- This collection of functions provides access to the host's time base. It also provides
- discriptive information about the time base and translations to and from nanoseconds.
- }
- {!
- @functiongroup HostTime
- }
- {!
- @function AudioGetCurrentHostTime
- @abstract Gets the current host time.
- @result A UInt64 containing the current host time.
- }
- function AudioGetCurrentHostTime: UInt64; external name '_AudioGetCurrentHostTime';
- (* __OSX_AVAILABLE_STARTING(__MAC_10_0, __IPHONE_2_0) *)
- {!
- @function AudioGetHostClockFrequency
- @abstract Gets the number of ticks per second in the host time base.
- @result A Float64 containing the number of ticks per second in the host time base.
- }
- function AudioGetHostClockFrequency: Float64; external name '_AudioGetHostClockFrequency';
- (* __OSX_AVAILABLE_STARTING(__MAC_10_0, __IPHONE_2_0) *)
- {!
- @function AudioGetHostClockMinimumTimeDelta
- @abstract Gets the smallest number of ticks that two succeeding values will ever differ.
- by.
- @result A UInt32 containing the smallest number of ticks that two succeeding values will
- ever differ.
- }
- function AudioGetHostClockMinimumTimeDelta: UInt32; external name '_AudioGetHostClockMinimumTimeDelta';
- (* __OSX_AVAILABLE_STARTING(__MAC_10_0, __IPHONE_2_0) *)
- {!
- @function AudioConvertHostTimeToNanos
- @abstract Convert the given host time into a time in nanoseconds.
- @param inHostTime
- A UInt64 containing the host time to convert.
- @result A UInt64 containining the converted host time.
- }
- function AudioConvertHostTimeToNanos( inHostTime: UInt64 ): UInt64; external name '_AudioConvertHostTimeToNanos';
- (* __OSX_AVAILABLE_STARTING(__MAC_10_0, __IPHONE_2_0) *)
- {!
- @function AudioConvertNanosToHostTime
- @abstract Convert the given nanosecond time into a host time.
- @param inNanos
- A UInt64 containing the nanosecond time to convert.
- @result A UInt64 containining the converted nanosecond time.
- }
- function AudioConvertNanosToHostTime( inNanos: UInt64 ): UInt64; external name '_AudioConvertNanosToHostTime';
- (* __OSX_AVAILABLE_STARTING(__MAC_10_0, __IPHONE_2_0) *)
- //==================================================================================================
- {$ifc not defined MACOSALLINCLUDE or not MACOSALLINCLUDE}
- end.
- {$endc} {not MACOSALLINCLUDE}
|