HostTime.pas 9.1 KB

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  1. {==================================================================================================
  2. File: CoreAudio/HostTime.h
  3. Contains: Routines for accessing the host's time base
  4. Copyright: (c) 1985-2010 by Apple, Inc., all rights reserved.
  5. Bugs?: For bug reports, consult the following page on
  6. the World Wide Web:
  7. http://bugs.freepascal.org
  8. ==================================================================================================}
  9. { Pascal Translation: Gale R Paeper, <[email protected]>, 2006 }
  10. { Pascal Translation Updated: Jonas Maebe, <[email protected]>, October 2009 }
  11. { Pascal Translation Updated: Jonas Maebe, <[email protected]>, October 2012 }
  12. {
  13. Modified for use with Free Pascal
  14. Version 308
  15. Please report any bugs to <[email protected]>
  16. }
  17. {$ifc not defined MACOSALLINCLUDE or not MACOSALLINCLUDE}
  18. {$mode macpas}
  19. {$packenum 1}
  20. {$macro on}
  21. {$inline on}
  22. {$calling mwpascal}
  23. unit HostTime;
  24. interface
  25. {$setc UNIVERSAL_INTERFACES_VERSION := $0400}
  26. {$setc GAP_INTERFACES_VERSION := $0308}
  27. {$ifc not defined USE_CFSTR_CONSTANT_MACROS}
  28. {$setc USE_CFSTR_CONSTANT_MACROS := TRUE}
  29. {$endc}
  30. {$ifc defined CPUPOWERPC and defined CPUI386}
  31. {$error Conflicting initial definitions for CPUPOWERPC and CPUI386}
  32. {$endc}
  33. {$ifc defined FPC_BIG_ENDIAN and defined FPC_LITTLE_ENDIAN}
  34. {$error Conflicting initial definitions for FPC_BIG_ENDIAN and FPC_LITTLE_ENDIAN}
  35. {$endc}
  36. {$ifc not defined __ppc__ and defined CPUPOWERPC32}
  37. {$setc __ppc__ := 1}
  38. {$elsec}
  39. {$setc __ppc__ := 0}
  40. {$endc}
  41. {$ifc not defined __ppc64__ and defined CPUPOWERPC64}
  42. {$setc __ppc64__ := 1}
  43. {$elsec}
  44. {$setc __ppc64__ := 0}
  45. {$endc}
  46. {$ifc not defined __i386__ and defined CPUI386}
  47. {$setc __i386__ := 1}
  48. {$elsec}
  49. {$setc __i386__ := 0}
  50. {$endc}
  51. {$ifc not defined __x86_64__ and defined CPUX86_64}
  52. {$setc __x86_64__ := 1}
  53. {$elsec}
  54. {$setc __x86_64__ := 0}
  55. {$endc}
  56. {$ifc not defined __arm__ and defined CPUARM}
  57. {$setc __arm__ := 1}
  58. {$elsec}
  59. {$setc __arm__ := 0}
  60. {$endc}
  61. {$ifc not defined __arm64__ and defined CPUAARCH64}
  62. {$setc __arm64__ := 1}
  63. {$elsec}
  64. {$setc __arm64__ := 0}
  65. {$endc}
  66. {$ifc defined cpu64}
  67. {$setc __LP64__ := 1}
  68. {$elsec}
  69. {$setc __LP64__ := 0}
  70. {$endc}
  71. {$ifc defined __ppc__ and __ppc__ and defined __i386__ and __i386__}
  72. {$error Conflicting definitions for __ppc__ and __i386__}
  73. {$endc}
  74. {$ifc defined __ppc__ and __ppc__}
  75. {$setc TARGET_CPU_PPC := TRUE}
  76. {$setc TARGET_CPU_PPC64 := FALSE}
  77. {$setc TARGET_CPU_X86 := FALSE}
  78. {$setc TARGET_CPU_X86_64 := FALSE}
  79. {$setc TARGET_CPU_ARM := FALSE}
  80. {$setc TARGET_CPU_ARM64 := FALSE}
  81. {$setc TARGET_OS_MAC := TRUE}
  82. {$setc TARGET_OS_IPHONE := FALSE}
  83. {$setc TARGET_IPHONE_SIMULATOR := FALSE}
  84. {$setc TARGET_OS_EMBEDDED := FALSE}
  85. {$elifc defined __ppc64__ and __ppc64__}
  86. {$setc TARGET_CPU_PPC := FALSE}
  87. {$setc TARGET_CPU_PPC64 := TRUE}
  88. {$setc TARGET_CPU_X86 := FALSE}
  89. {$setc TARGET_CPU_X86_64 := FALSE}
  90. {$setc TARGET_CPU_ARM := FALSE}
  91. {$setc TARGET_CPU_ARM64 := FALSE}
  92. {$setc TARGET_OS_MAC := TRUE}
  93. {$setc TARGET_OS_IPHONE := FALSE}
  94. {$setc TARGET_IPHONE_SIMULATOR := FALSE}
  95. {$setc TARGET_OS_EMBEDDED := FALSE}
  96. {$elifc defined __i386__ and __i386__}
  97. {$setc TARGET_CPU_PPC := FALSE}
  98. {$setc TARGET_CPU_PPC64 := FALSE}
  99. {$setc TARGET_CPU_X86 := TRUE}
  100. {$setc TARGET_CPU_X86_64 := FALSE}
  101. {$setc TARGET_CPU_ARM := FALSE}
  102. {$setc TARGET_CPU_ARM64 := FALSE}
  103. {$ifc defined(iphonesim)}
  104. {$setc TARGET_OS_MAC := FALSE}
  105. {$setc TARGET_OS_IPHONE := TRUE}
  106. {$setc TARGET_IPHONE_SIMULATOR := TRUE}
  107. {$elsec}
  108. {$setc TARGET_OS_MAC := TRUE}
  109. {$setc TARGET_OS_IPHONE := FALSE}
  110. {$setc TARGET_IPHONE_SIMULATOR := FALSE}
  111. {$endc}
  112. {$setc TARGET_OS_EMBEDDED := FALSE}
  113. {$elifc defined __x86_64__ and __x86_64__}
  114. {$setc TARGET_CPU_PPC := FALSE}
  115. {$setc TARGET_CPU_PPC64 := FALSE}
  116. {$setc TARGET_CPU_X86 := FALSE}
  117. {$setc TARGET_CPU_X86_64 := TRUE}
  118. {$setc TARGET_CPU_ARM := FALSE}
  119. {$setc TARGET_CPU_ARM64 := FALSE}
  120. {$ifc defined(iphonesim)}
  121. {$setc TARGET_OS_MAC := FALSE}
  122. {$setc TARGET_OS_IPHONE := TRUE}
  123. {$setc TARGET_IPHONE_SIMULATOR := TRUE}
  124. {$elsec}
  125. {$setc TARGET_OS_MAC := TRUE}
  126. {$setc TARGET_OS_IPHONE := FALSE}
  127. {$setc TARGET_IPHONE_SIMULATOR := FALSE}
  128. {$endc}
  129. {$setc TARGET_OS_EMBEDDED := FALSE}
  130. {$elifc defined __arm__ and __arm__}
  131. {$setc TARGET_CPU_PPC := FALSE}
  132. {$setc TARGET_CPU_PPC64 := FALSE}
  133. {$setc TARGET_CPU_X86 := FALSE}
  134. {$setc TARGET_CPU_X86_64 := FALSE}
  135. {$setc TARGET_CPU_ARM := TRUE}
  136. {$setc TARGET_CPU_ARM64 := FALSE}
  137. { will require compiler define when/if other Apple devices with ARM cpus ship }
  138. {$setc TARGET_OS_MAC := FALSE}
  139. {$setc TARGET_OS_IPHONE := TRUE}
  140. {$setc TARGET_IPHONE_SIMULATOR := FALSE}
  141. {$setc TARGET_OS_EMBEDDED := TRUE}
  142. {$elifc defined __arm64__ and __arm64__}
  143. {$setc TARGET_CPU_PPC := FALSE}
  144. {$setc TARGET_CPU_PPC64 := FALSE}
  145. {$setc TARGET_CPU_X86 := FALSE}
  146. {$setc TARGET_CPU_X86_64 := FALSE}
  147. {$setc TARGET_CPU_ARM := FALSE}
  148. {$setc TARGET_CPU_ARM64 := TRUE}
  149. { will require compiler define when/if other Apple devices with ARM cpus ship }
  150. {$setc TARGET_OS_MAC := FALSE}
  151. {$setc TARGET_OS_IPHONE := TRUE}
  152. {$setc TARGET_IPHONE_SIMULATOR := FALSE}
  153. {$setc TARGET_OS_EMBEDDED := TRUE}
  154. {$elsec}
  155. {$error __ppc__ nor __ppc64__ nor __i386__ nor __x86_64__ nor __arm__ nor __arm64__ is defined.}
  156. {$endc}
  157. {$ifc defined __LP64__ and __LP64__ }
  158. {$setc TARGET_CPU_64 := TRUE}
  159. {$elsec}
  160. {$setc TARGET_CPU_64 := FALSE}
  161. {$endc}
  162. {$ifc defined FPC_BIG_ENDIAN}
  163. {$setc TARGET_RT_BIG_ENDIAN := TRUE}
  164. {$setc TARGET_RT_LITTLE_ENDIAN := FALSE}
  165. {$elifc defined FPC_LITTLE_ENDIAN}
  166. {$setc TARGET_RT_BIG_ENDIAN := FALSE}
  167. {$setc TARGET_RT_LITTLE_ENDIAN := TRUE}
  168. {$elsec}
  169. {$error Neither FPC_BIG_ENDIAN nor FPC_LITTLE_ENDIAN are defined.}
  170. {$endc}
  171. {$setc ACCESSOR_CALLS_ARE_FUNCTIONS := TRUE}
  172. {$setc CALL_NOT_IN_CARBON := FALSE}
  173. {$setc OLDROUTINENAMES := FALSE}
  174. {$setc OPAQUE_TOOLBOX_STRUCTS := TRUE}
  175. {$setc OPAQUE_UPP_TYPES := TRUE}
  176. {$setc OTCARBONAPPLICATION := TRUE}
  177. {$setc OTKERNEL := FALSE}
  178. {$setc PM_USE_SESSION_APIS := TRUE}
  179. {$setc TARGET_API_MAC_CARBON := TRUE}
  180. {$setc TARGET_API_MAC_OS8 := FALSE}
  181. {$setc TARGET_API_MAC_OSX := TRUE}
  182. {$setc TARGET_CARBON := TRUE}
  183. {$setc TARGET_CPU_68K := FALSE}
  184. {$setc TARGET_CPU_MIPS := FALSE}
  185. {$setc TARGET_CPU_SPARC := FALSE}
  186. {$setc TARGET_OS_UNIX := FALSE}
  187. {$setc TARGET_OS_WIN32 := FALSE}
  188. {$setc TARGET_RT_MAC_68881 := FALSE}
  189. {$setc TARGET_RT_MAC_CFM := FALSE}
  190. {$setc TARGET_RT_MAC_MACHO := TRUE}
  191. {$setc TYPED_FUNCTION_POINTERS := TRUE}
  192. {$setc TYPE_BOOL := FALSE}
  193. {$setc TYPE_EXTENDED := FALSE}
  194. {$setc TYPE_LONGLONG := TRUE}
  195. uses MacTypes,CoreAudioTypes;
  196. {$endc} {not MACOSALLINCLUDE}
  197. {$ALIGN POWER}
  198. //==================================================================================================
  199. //#pragma mark Theory of Operation
  200. {!
  201. @header HostTime
  202. This collection of functions provides access to the host's time base. It also provides
  203. discriptive information about the time base and translations to and from nanoseconds.
  204. }
  205. {!
  206. @functiongroup HostTime
  207. }
  208. {!
  209. @function AudioGetCurrentHostTime
  210. @abstract Gets the current host time.
  211. @result A UInt64 containing the current host time.
  212. }
  213. function AudioGetCurrentHostTime: UInt64; external name '_AudioGetCurrentHostTime';
  214. (* __OSX_AVAILABLE_STARTING(__MAC_10_0, __IPHONE_2_0) *)
  215. {!
  216. @function AudioGetHostClockFrequency
  217. @abstract Gets the number of ticks per second in the host time base.
  218. @result A Float64 containing the number of ticks per second in the host time base.
  219. }
  220. function AudioGetHostClockFrequency: Float64; external name '_AudioGetHostClockFrequency';
  221. (* __OSX_AVAILABLE_STARTING(__MAC_10_0, __IPHONE_2_0) *)
  222. {!
  223. @function AudioGetHostClockMinimumTimeDelta
  224. @abstract Gets the smallest number of ticks that two succeeding values will ever differ.
  225. by.
  226. @result A UInt32 containing the smallest number of ticks that two succeeding values will
  227. ever differ.
  228. }
  229. function AudioGetHostClockMinimumTimeDelta: UInt32; external name '_AudioGetHostClockMinimumTimeDelta';
  230. (* __OSX_AVAILABLE_STARTING(__MAC_10_0, __IPHONE_2_0) *)
  231. {!
  232. @function AudioConvertHostTimeToNanos
  233. @abstract Convert the given host time into a time in nanoseconds.
  234. @param inHostTime
  235. A UInt64 containing the host time to convert.
  236. @result A UInt64 containining the converted host time.
  237. }
  238. function AudioConvertHostTimeToNanos( inHostTime: UInt64 ): UInt64; external name '_AudioConvertHostTimeToNanos';
  239. (* __OSX_AVAILABLE_STARTING(__MAC_10_0, __IPHONE_2_0) *)
  240. {!
  241. @function AudioConvertNanosToHostTime
  242. @abstract Convert the given nanosecond time into a host time.
  243. @param inNanos
  244. A UInt64 containing the nanosecond time to convert.
  245. @result A UInt64 containining the converted nanosecond time.
  246. }
  247. function AudioConvertNanosToHostTime( inNanos: UInt64 ): UInt64; external name '_AudioConvertNanosToHostTime';
  248. (* __OSX_AVAILABLE_STARTING(__MAC_10_0, __IPHONE_2_0) *)
  249. //==================================================================================================
  250. {$ifc not defined MACOSALLINCLUDE or not MACOSALLINCLUDE}
  251. end.
  252. {$endc} {not MACOSALLINCLUDE}