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`
`/*+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
`
`Copyright (c) 2001 BeComm Corporation
`
`Filename:
`
` sampleclock.c
`
`Group Name:
`
` todo
`
`Group Overview:
`
` todo
`
`Owner:
`
` Guy Carpenter (guyc) 16-Aug-2001
`
`-----------------------------------------------------------------------------*/
`#define SOS_DEBUG_ZONE "/classes/sampleclock"
`
`#include <sosstrings.h>
`#include <sosmultimedia.h>
`
`SOS_SOURCE_VERSION (
` "$Id: sampleclock.c,v 1.14 2001/11/09 19:50:18 guyc Exp $"
`);
`
`/*+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
`Definitions
`+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++*/
`#define SAMPLECLOCK_CLASS_NAME "sampleclock"
`#define SAMPLECLOCK_SCHEME_NAME "sampleclock"
`
`#define LOCK(C) SOS_Lock_Acquire(C->Lock)
`#define UNLOCK(C) SOS_Lock_Release(C->Lock)
`/*+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
`globals
`+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++*/
`static
`SOS_REGOBJECTCLASS * g_SampleClockClass = NULL;
`
`static
`
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`Page 1 of 15
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`
`
`Page 1/15
`Saved: 11/9/01, 1:50:18 PM
`Printed for: Implicit
`
`/*+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
`
`Copyright (c) 2001 BeComm Corporation
`
`Filename:
`
` sampleclock.c
`
`Group Name:
`
` todo
`
`Group Overview:
`
` todo
`
`Owner:
`
` Guy Carpenter (guyc) 16-Aug-2001
`
`-----------------------------------------------------------------------------*/
`#define SOS_DEBUG_ZONE "/classes/sampleclock"
`
`#include <sosstrings.h>
`#include <sosmultimedia.h>
`
`SOS_SOURCE_VERSION (
` "$Id: sampleclock.c,v 1.14 2001/11/09 19:50:18 guyc Exp $"
`);
`
`/*+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
`Definitions
`+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++*/
`#define SAMPLECLOCK_CLASS_NAME "sampleclock"
`#define SAMPLECLOCK_SCHEME_NAME "sampleclock"
`
`#define LOCK(C) SOS_Lock_Acquire(C->Lock)
`#define UNLOCK(C) SOS_Lock_Release(C->Lock)
`/*+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
`globals
`+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++*/
`static
`SOS_REGOBJECTCLASS * g_SampleClockClass = NULL;
`
`static
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`
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`/Users/implicit/Desktop/Source Code/2001.11.…/…/…/main/sampleclock.c
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`SOS_STRINGTABLE * g_NamedClockTable = NULL;
`
`static
`SOS_LOCK * g_NamedClockTableLock = NULL;
`
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`/*+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
`74
`Basic Object Methods
`75
`+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++*/
`76
`static
`77
`SOS_STATUS
`78
`SampleClock_Init(
`79
` SOS_REGOBJECT * Object
`80
`)81
`{82
` SOS_STATUS status = SOS_Success;
`83
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`typedef struct _SAMPLECLOCK {
` SOS_CLOCK_TICK Time;
` SOS_UINT32 Sample;
` SOS_UINT32 Frequency;
` SOS_UINT32 Divisor;
` SOS_BOOLEAN IsSet;
` SOS_LOCK * Lock;
` char * Name;
`} SAMPLECLOCK;
`
`/*+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
`Macros
`+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++*/
`
`#define RESOLVE(O) SOS_REGOBJECT_RESOLVE(O,g_SampleClockClass)
`#define ISVALID(O) SOS_REGOBJECT_ISVALID(O,g_SampleClockClass)
`#define IRESOLVE(I) SOS_INTERFACE_RESOLVE(I,g_SampleClockClass)
`#define IISVALID(I) SOS_INTERFACE_ISVALID(I,g_SampleClockClass)
`
`/*+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
`Types
`+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++*/
`
` SAMPLECLOCK *sampleclock = SOS_Mem_Alloc(sizeof(SAMPLECLOCK));
` SOS_memset(sampleclock, 0, sizeof(SAMPLECLOCK));
`
` /* lock the sampleclock until the first call to set */
` sampleclock->Lock = SOS_Lock_Create();
`
`
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`
`static
`void
`SampleClock_Uninit(
` SOS_REGOBJECT * Object
`)
`{
` if (ISVALID(Object)) {
` SAMPLECLOCK *sampleclock = RESOLVE(Object);
`
` if (sampleclock->Name) {
` SOS_StringTable_ElementRemove(
` g_NamedClockTable,
` sampleclock->Name,
` NULL
` );
` }
`
` SOS_RegObject_DataPut(Object, sampleclock);
`91
`
`92
` return status;
`93
`}94
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` SOS_Lock_Destroy(sampleclock->Lock);
` SOS_Mem_Free(sampleclock->Name);
` SOS_Mem_Free(sampleclock);
` }
`}
`
`/*+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
`Support functions
`+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++*/
`static
`void
`FactorReduce(
` SOS_UINT32 *Numerator,
` SOS_UINT32 *Denominator
`)
`{
` SOS_UINT32 numerator = *Numerator;
` SOS_UINT32 denominator = *Denominator;
` SOS_UINT32 factor=2;
`
` while (factor<=numerator && factor<=denominator) {
` if (!(numerator%factor) &&
` !(denominator%factor)) {
`
`Page 3 of 15
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` numerator/=factor;
` denominator/=factor;
` } else {
` if (factor>2) factor++;
` factor++;
` }
` }
`
` SOS_DEBUGOUT_MINOR_EVENT(
` "Rationalized %lu/%lu to %lu/%lu\n",
` *Numerator,
` *Denominator,
` numerator,
` denominator
` );
`
` *Numerator = numerator;
` *Denominator = denominator;
`}
`
`/*+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
`
`+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++*/
`static
`SOS_STATUS
`SampleClock_NameSet(
` SOS_REGOBJECT * ClockObject,
` const char * Name
`)
`{
` SAMPLECLOCK * clock = RESOLVE(ClockObject);
` SOS_STATUS status;
` if (!Name || !*Name) {
` /* clock is unnamed */
` status = SOS_Success;
` } else if (clock && !clock->Name) {
` clock->Name = SOS_strdup(Name);
` if (clock->Name) {
` status = SOS_StringTable_ElementPut(
` g_NamedClockTable,
` clock->Name,
` ClockObject
` );
` } else {
` status = SOS_ErrorResourceAllocation;
`
`Page 4 of 15
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`
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`
` }
` } else {
` status = SOS_ErrorParameter;
` }
`
` return status;
`}
`
`static
`SOS_STATUS
`SampleClock_GetByName(
` const char * Name,
` SOS_REGOBJECT ** ClockObject
`)
`{
` SOS_STATUS status;
`
` status = SOS_StringTable_ElementPeek(
` g_NamedClockTable,
` Name,
` (void**)ClockObject
` );
`
` if (SOS_SUCCEEDED(status)) {
` SOS_RegObject_Reference(*ClockObject);
` }
`
` return status;
`}
`
`static
`SOS_STATUS
`SampleClock_FindOrCreateByName(
` const char * Name,
` SOS_REGOBJECT ** ClockObject
`)
`{
` SOS_STATUS status;
`
` SOS_Lock_Acquire(g_NamedClockTableLock);
`
` if (Name && *Name) {
` status = SampleClock_GetByName(Name, ClockObject);
` } else {
` status = SOS_Error;
`
`Page 5 of 15
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`
` }
`
` if (!SOS_SUCCEEDED(status)) {
` *ClockObject = SOS_RegObject_Create(g_SampleClockClass);
` status = SampleClock_NameSet(*ClockObject, Name);
` }
`
` SOS_Lock_Release(g_NamedClockTableLock);
`
` SOS_DEBUGOUT_DETAIL("Created sampleclock %s at %p\n",
` (Name && *Name) ? Name : "<unnamed>",
` *ClockObject
` );
`
` return status;
`}
`
`/*+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
`CreateFromString Interface
`+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++*/
`
`static
`SOS_STATUS
`SampleClock_CreateFromString (
` SOS_ICREATEFROMSTRING * ICreateFromString,
` const char * String,
` SOS_REGOBJECT ** Object
`)
`{
` SOS_STATUS status = SOS_Success;
`
` SOS_DEBUGOUT_FUNC_TRACE("SampleClock_CreateFromString\n");
`
` if (Object) {
` status = SampleClock_FindOrCreateByName(
` String,
` Object
` );
` } else {
` status = SOS_ErrorParameter;
` }
`
` return status;
`}
`
`Page 6 of 15
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`
`
`
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`
`/*+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
`Copy Interface
`+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++*/
`static
`SOS_STATUS
`SampleClock_Copy (
` SOS_ICOPY * Interface,
` SOS_REGOBJECT ** Copy
`)
`{
` SOS_STATUS status = SOS_Success;
` SOS_REGOBJECT *copy = NULL;
` SAMPLECLOCK *clock = IRESOLVE(Interface);
`
` SOS_DEBUGOUT_DETAIL("SampleClock_Copy\n");
`
` if (clock) {
` if (clock->Name) {
` SOS_DEBUGOUT_DETAIL("SampleClock_Copy references named clock\n");
` /*
` * Named clocks are global (and will probably be deprecated)
` * so we just return a reference.
` */
` copy = SOS_RegObject_Reference(
` SOS_Interface_ObjectPeek(Interface)
` );
` } else {
` SOS_DEBUGOUT_DETAIL("SampleClock_Copy copies unnamed clock\n");
` /*
` * unnamed clocks need to be copied deeply
` */
` copy = SOS_RegObject_Create(g_SampleClockClass);
` if (copy) {
` SAMPLECLOCK *copyClock;
` /*
` * Set everything except the lock
` */
` copyClock = RESOLVE(copy);
` copyClock->Time = clock->Time;
` copyClock->Sample = clock->Sample;
` copyClock->Frequency = clock->Frequency;
` copyClock->Divisor = clock->Divisor;
` copyClock->IsSet = clock->IsSet;
` copyClock->Name = NULL;
`
`Page 7 of 15
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`
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`
` }
` }
` } else {
` status = SOS_ErrorParameter;
` }
`
` if (Copy) {
` *Copy = copy;
` } else {
` SOS_RegObject_Release(copy);
` }
`
` return status;
`}
`
`/*+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
`SampleClock Interface
`+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++*/
`
`static
`SOS_STATUS
`SampleClock_FrequencySet(
` SOS_ISAMPLECLOCK * Interface,
` SOS_UINT32 Frequency,
` SOS_UINT32 Divisor
`)
`{
` SOS_STATUS status = SOS_Success;
`
` if (!IISVALID(Interface)) {
` /* invalid object */
` status = SOS_ErrorParameter;
` } else if (Divisor==0) {
` /* invalid divisor */
` SOS_ASSERT_ASSUMPTION(
` Divisor!=0,
` "SampleClock_FrequencySet called with Divisor of 0"
` );
` status = SOS_ErrorParameter;
` } else {
` SAMPLECLOCK *sampleclock = IRESOLVE(Interface);
`
` /*
` * We first remove any common factors with no loss of
` * accuracy.
`
`Page 8 of 15
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`
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`
` */
` FactorReduce(&Frequency, &Divisor);
`
` /*
` * If the product of these values is larger than 2^32-1
` * we can get overflows in the epoch calculation. We have to
` * reduce them to make sure that isn't possible.
` *
` * REVISIT - the loss of accuracy here is small, but could still
` * countered for using the same technique we use for the epoch
` * calculations - store the remainder and apply that to the
` * final calculation.
` */
` while (((Frequency*Divisor)/Divisor)!=Frequency) {
` SOS_DEBUGOUT_MINOR_EVENT(
` "Reducing sample clock ratio from %lu/%lu to %lu/%lu to avoid overflow\n",
` Frequency,
` Divisor,
` Frequency>>1,
` Divisor>>1
` );
` Divisor>>=1;
` Frequency>>=1;
` }
` sampleclock->Frequency = Frequency;
` sampleclock->Divisor = Divisor;
` sampleclock->Time = SOS_Clock_TickGet();
` sampleclock->Sample = 0;
`
`
` SOS_ASSERT_ASSUMPTION(
` (Frequency*Divisor)/Divisor==Frequency,
` "Overflow in sample clock values"
` );
`
` }
`
` return status;
`}
`
`static
`SOS_STATUS
`SampleClock_FrequencyGet(
`
`Page 9 of 15
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`
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`
` SOS_ISAMPLECLOCK * Interface,
` SOS_UINT32 * Frequency,
` SOS_UINT32 * Divisor
`)
`{
` SOS_STATUS status = SOS_Success;
`
` if (IISVALID(Interface)) {
` SAMPLECLOCK *sampleclock = IRESOLVE(Interface);
`
` if (Frequency) {
` *Frequency = sampleclock->Frequency;
` }
` if (Divisor) {
` *Divisor = sampleclock->Divisor;
` }
` } else {
` status = SOS_ErrorParameter;
` }
`
` return status;
`}
`
`static
`SOS_STATUS
`SampleClock_Update(
` SOS_ISAMPLECLOCK * Interface,
` SOS_CLOCK_TICK Time,
` SOS_UINT32 Sample
`)
`{
` SOS_STATUS status = SOS_Success;
`
` if (IISVALID(Interface)) {
` SAMPLECLOCK *sampleclock = IRESOLVE(Interface);
`
` SOS_ASSERT_ASSUMPTION(
` Sample==0 || sampleclock->Frequency!=0,
` "Update of improperly initialized clock\n"
` );
`
` SOS_DEBUGOUT_MINOR_EVENT(
` "Updating clock %x to sample %lu at %lu\n",
` Time,
` Sample
`
`Page 10 of 15
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`
`
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`
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`
` );
`
` /*
` * If the clock hasn't been started we must
` */
` LOCK(sampleclock);
`
` sampleclock->Time = Time;
` sampleclock->Sample = Sample;
` sampleclock->IsSet = SOS_True;
`
` UNLOCK(sampleclock);
`
` } else {
` /* not a valid interface */
` status = SOS_ErrorParameter;
` }
`
` return status;
`}
`
`static
`SOS_STATUS
`SampleClock_EpochGet(
` SOS_ISAMPLECLOCK * Interface,
` SOS_CLOCK_TICK * Epoch
`)
`{
` SOS_CLOCK_TICK epoch = 0;
` SOS_STATUS status = SOS_Success;
`
` if (IISVALID(Interface)) {
` SAMPLECLOCK *sampleclock = IRESOLVE(Interface);
` LOCK(sampleclock);
` if (Epoch) {
` if (!sampleclock->IsSet) {
` SOS_DEBUGOUT_MAJOR_EVENT(
` "Sample clock %p not set\n",
` Interface->Interface.Object
` );
` status = SOS_ErrorParameter;
` } else if (sampleclock->Sample==0 && sampleclock->IsSet) {
` /*
` * Special case - if sample is 0 we don't
`
`Page 11 of 15
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`
`
`/Users/implicit/Desktop/Source Code/2001.11.…/…/…/main/sampleclock.c
`Page 12/15
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`Printed for: Implicit
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` * need to compute the epoch - we know it,
` * and we don't need to even have a frequency
` * and divisor set.
` */
` epoch = sampleclock->Time;
` } else if (sampleclock->Frequency) {
` SOS_UINT32 whole =
` sampleclock->Sample / sampleclock->Frequency;
` SOS_UINT32 remain =
` sampleclock->Sample % sampleclock->Frequency;
` SOS_UINT32 delta = whole * sampleclock->Divisor +
` remain * sampleclock->Divisor / sampleclock->Frequency;
` epoch = sampleclock->Time - delta;
`
` SOS_DEBUGOUT_MINOR_EVENT(
` "SampleClock %lu/%lu %lu@%lu Epoch %lu\n",
` sampleclock->Frequency,
` sampleclock->Divisor,
` sampleclock->Sample,
` sampleclock->Time,
` epoch
` );
`
` } else {
` /* Frequency is 0 - or unspecified, and Sample!=0 */
` SOS_DEBUGOUT_MAJOR_EVENT(
` "Sample clock frequency not set\n"
` );
` status = SOS_ErrorParameter;
` }
` } else {
` /* out parameter is 0 */
` status = SOS_ErrorParameter;
` }
` UNLOCK(sampleclock);
` } else {
` /* not a valid interface */
` status = SOS_ErrorParameter;
` }
`
` if (Epoch) {
` *Epoch = epoch;
` }
`
` SOS_DEBUGOUT_FUNC_TRACE(
`
`Page 12 of 15
`
`Implicit Exhibit 2086
`Sonos v. Implicit, IPR2018-0766, -0767
`
`
`
`/Users/implicit/Desktop/Source Code/2001.11.…/…/…/main/sampleclock.c
`Page 13/15
`Saved: 11/9/01, 1:50:18 PM
`Printed for: Implicit
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`
` "EpochGet returns %d\n",
` status);
`
` return status;
`}
`
`/*+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
`Global initialization
`+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++*/
`static
`SOS_STATUS
`SampleClock_ClassInit (
` SOS_REGOBJECTCLASS *RegObjectClass,
` SOS_REGOBJECT *InitContext
`)
`{
` SOS_STATUS status = SOS_Success;
`
` static const SOS_ISAMPLECLOCK iSampleClock = {
` SOS_INTERFACE_INIT,
` SampleClock_FrequencySet,
` SampleClock_FrequencyGet,
` SampleClock_Update,
` SampleClock_EpochGet
` };
`
` static const SOS_ICREATEFROMSTRING iCreateFromString = {
` SOS_INTERFACE_INIT,
` SampleClock_CreateFromString
` };
`
` static const SOS_ICOPY iCopy = {
` SOS_INTERFACE_INIT,
` SampleClock_Copy,
` SampleClock_Copy
` };
`
` g_SampleClockClass = SOS_RegObjectClass_Reference(RegObjectClass);
`
` status = SOS_RegObjectClass_InterfaceAdd(
` g_SampleClockClass,
` SOS_ISAMPLECLOCK_ID,
` &iSampleClock,
` sizeof(iSampleClock)
`
`Page 13 of 15
`
`Implicit Exhibit 2086
`Sonos v. Implicit, IPR2018-0766, -0767
`
`
`
`/Users/implicit/Desktop/Source Code/2001.11.…/…/…/main/sampleclock.c
`Page 14/15
`Saved: 11/9/01, 1:50:18 PM
`Printed for: Implicit
`
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`
` );
`
` status = SOS_RegObjectClass_ClassInterfaceAdd(
` g_SampleClockClass,
` SOS_ICREATEFROMSTRING_ID,
` &iCreateFromString,
` sizeof(iCreateFromString)
` );
`
` SOS_RegObjectClass_InterfaceAdd (
` g_SampleClockClass,
` SOS_ICOPY_ID,
` &iCopy,
` sizeof(iCopy)
` );
`
` SOS_Registry_SchemeRegister(
` g_SampleClockClass,
` SAMPLECLOCK_SCHEME_NAME
` );
`
` g_NamedClockTable = SOS_StringTable_Create(NULL,NULL,NULL);
` g_NamedClockTableLock = SOS_Lock_Create();
`
` return status;
`}
`
`static
`SOS_STATUS
`SampleClock_ClassUninit(
` SOS_REGOBJECTCLASS *RegObjectClass
`)
`{
` SOS_StringTable_Destroy(g_NamedClockTable);
` g_NamedClockTable = NULL;
` SOS_Lock_Destroy(g_NamedClockTableLock);
` g_NamedClockTableLock = NULL;
`
` SOS_Registry_SchemeUnregister(
` g_SampleClockClass,
` SAMPLECLOCK_SCHEME_NAME
` );
`
` SOS_RegObjectClass_Release(g_SampleClockClass);
`
`Page 14 of 15
`
`Implicit Exhibit 2086
`Sonos v. Implicit, IPR2018-0766, -0767
`
`
`
`/Users/implicit/Desktop/Source Code/2001.11.…/…/…/main/sampleclock.c
`Page 15/15
`Saved: 11/9/01, 1:50:18 PM
`Printed for: Implicit
`
` return SOS_Success;
`}
`
`SOS_STATUS
`SOS_ModuleInit(
` SOS_OBJECTFILE* ObjectFile,
` SOS_REGOBJECT* RegistryHandle
`)
`{
` SOS_REGOBJECTCLASS *class = SOS_RegObjectClass_Register(
` ObjectFile,
` SAMPLECLOCK_CLASS_NAME,
` NULL, /* class context */
` SampleClock_ClassInit,
` SampleClock_ClassUninit,
` SampleClock_Init,
` SampleClock_Uninit
` );
`
` /*
` * Immediately release this class.
` * It may not be returned in future versions.
` */
` SOS_RegObjectClass_Release(class);
`
` return SOS_Success;
`}
`
`void
`SOS_ModuleUninit(
` SOS_OBJECTFILE* ObjectFile
`)
`{
`}
`
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`
`Page 15 of 15
`
`Implicit Exhibit 2086
`Sonos v. Implicit, IPR2018-0766, -0767
`
`
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