C++ IAAFHeader::LookupMob方法代码示例

void HTMLClipTest::OpenHTMLClip()
{
  assert(_pHeader);

  HRESULT hr = S_OK;
  aafNumSlots_t compositionMobs = 0;
  IEnumAAFMobs *pEnumMobs = NULL;
  IAAFMob *pReferencingMob = NULL;
  IAAFCompositionMob *pCompositionMob = NULL;
  aafNumSlots_t mobSlots = 0;
  IEnumAAFMobSlots *pEnumSlots = NULL;
  IAAFMobSlot *pMobSlot = NULL;
  IAAFSegment *pSegment = NULL;
  IAAFHTMLClip *pHTMLClip = NULL;
  aafUInt32 bufSize = 0;
  aafUInt32 actualBufSize = 0;
  aafUInt32 actualLength = 0;
  wchar_t *pBeginAnchor = NULL;
  wchar_t *pEndAnchor = NULL;
  IAAFSourceReference *pSourceReference = NULL;
  aafMobID_t masterMobID = {0};
  IAAFMasterMob *pMasterMob = NULL;
  IAAFMob *pReferencedMob = NULL;


  try
  {
    // Get the number of composition mobs in the file (should be one)
    checkResult(_pHeader->CountMobs(kAAFCompMob, &compositionMobs));
    checkExpression(1 == compositionMobs, AAFRESULT_TEST_FAILED);

    // Get the composition mob. There should only be one.
    aafSearchCrit_t criteria;
    criteria.searchTag = kAAFByMobKind;
    criteria.tags.mobKind = kAAFCompMob;
    checkResult(_pHeader->GetMobs(&criteria, &pEnumMobs));
    checkResult(pEnumMobs->NextOne(&pReferencingMob));
    checkResult(pReferencingMob->QueryInterface(IID_IAAFCompositionMob, (void **)&pCompositionMob));

    // Get the html clip in the slot. There should be only one.
    checkResult(pReferencingMob->CountSlots(&mobSlots));
    checkExpression(1 == mobSlots, AAFRESULT_TEST_FAILED);
    checkResult(pReferencingMob->GetSlots(&pEnumSlots));
    checkResult(pEnumSlots->NextOne(&pMobSlot));
    checkResult(pMobSlot->GetSegment(&pSegment));
    checkResult(pSegment->QueryInterface(IID_IAAFHTMLClip, (void **)&pHTMLClip));

    // Validate the properties...
    checkResult(pHTMLClip->GetBeginAnchorBufLen(&bufSize));
    actualLength = wcslen(_beginAnchor) + 1;
    actualBufSize = actualLength * 2;
    checkExpression(bufSize == actualBufSize, AAFRESULT_TEST_FAILED);
    pBeginAnchor = new wchar_t[actualLength];
    checkExpression(NULL != pBeginAnchor, AAFRESULT_NOMEMORY);
    checkResult(pHTMLClip->GetBeginAnchor(pBeginAnchor, actualBufSize));
    checkExpression(0 == wcscmp(pBeginAnchor, _beginAnchor), AAFRESULT_TEST_FAILED);

    checkResult(pHTMLClip->GetEndAnchorBufLen(&bufSize));
    actualLength = wcslen(_endAnchor) + 1;
    actualBufSize = actualLength * 2;
    checkExpression(bufSize == actualBufSize, AAFRESULT_TEST_FAILED);
    pEndAnchor = new wchar_t[actualLength];
    checkExpression(NULL != pEndAnchor, AAFRESULT_NOMEMORY);
    checkResult(pHTMLClip->GetEndAnchor(pEndAnchor, actualBufSize));
    checkExpression(0 == wcscmp(pEndAnchor, _endAnchor), AAFRESULT_TEST_FAILED);
    

    // Attempt to "resolve" the reference and find the master mob.
    checkResult(pHTMLClip->QueryInterface(IID_IAAFSourceReference, (void **)&pSourceReference));  
    checkResult(pSourceReference->GetSourceID(&masterMobID));
    checkExpression(0 == memcmp(&masterMobID, &_referencedMobID, sizeof(masterMobID)), AAFRESULT_TEST_FAILED);
    checkResult(_pHeader->LookupMob(masterMobID, &pReferencedMob));
    checkResult(pReferencedMob->QueryInterface(IID_IAAFMasterMob, (void **)&pMasterMob));

    
    // Use EssenceAccess to read some html essence
      // Find the file mob for the html essence.
      // Find the corresponding html essence.
      // Read some html essence.
  }
  catch (HRESULT& rHR)
  {
    hr = rHR;
    // fall through and handle cleanup
  }

  // Cleanup local references
  if (pMasterMob)
  {
    pMasterMob->Release();
    pMasterMob = NULL;
  }

  if (pReferencedMob)
  {
    pReferencedMob->Release();
    pReferencedMob = NULL;
  }

  if (pSourceReference)
//.........这里部分代码省略.........

void EventTest::OpenEvent()
{
  assert(_pHeader);

  HRESULT hr = S_OK;
  IAAFMob *pMob = NULL;
  IEnumAAFMobSlots *pEnumSlots = NULL;
  IAAFMobSlot *pMobSlot = NULL;
  IAAFEventMobSlot *pEventMobSlot = NULL;
  aafRational_t editRate = {0};
  IAAFSegment *pSegment = NULL;
  IAAFEvent *pEvent = NULL;
  aafPosition_t position;
  wchar_t eventComment[128];


  try
  {
    // Get the composition mob that we created to hold the
    checkResult(_pHeader->LookupMob(gMobID, &pMob));

    // Get the first mob slot and check that it is an event mob slot.
    checkResult(pMob->GetSlots(&pEnumSlots));
    checkResult(pEnumSlots->NextOne(&pMobSlot));
    checkResult(pMobSlot->QueryInterface(IID_IAAFEventMobSlot, (void **)&pEventMobSlot));
    checkResult(pEventMobSlot->GetEditRate(&editRate));
    checkExpression(0 == memcmp(&editRate, &_editRate, sizeof(editRate)), AAFRESULT_TEST_FAILED);

    // Get the event slot's segment and check that it is an event.
    checkResult(pMobSlot->GetSegment(&pSegment));
    checkResult(pSegment->QueryInterface(IID_IAAFEvent, (void **)&pEvent));

    // Now validate the event property values we thought were written to the
    // file.

    // Validate the position
    checkResult(pEvent->GetPosition(&position));
    checkExpression(0 == memcmp(&position, &_position, sizeof(position)), AAFRESULT_TEST_FAILED);

    // Validate the comment buffer size.
    aafUInt32 expectedLen = wcslen(_eventComment) + 1;
    aafUInt32 expectedSize = expectedLen * sizeof(wchar_t);
    aafUInt32 commentBufSize = 0;
    checkResult(pEvent->GetCommentBufLen(&commentBufSize));
    checkExpression(commentBufSize == expectedSize, AAFRESULT_TEST_FAILED);
    
    // Validate the event comment.
    checkExpression(commentBufSize <= sizeof(eventComment), AAFRESULT_TEST_FAILED);
    checkResult(pEvent->GetComment(eventComment, commentBufSize));
    checkExpression(0 == memcmp(eventComment, _eventComment, commentBufSize), AAFRESULT_TEST_FAILED); 
  }
  catch (HRESULT& rHR)
  {
    hr = rHR;
    // fall through and handle cleanup
  }

  // Cleanup local references
  if (pEvent)
  {
    pEvent->Release();
    pEvent = NULL;
  }

  if (pSegment)
  {
    pSegment->Release();
    pSegment = NULL;
  }

  if (pEventMobSlot)
  {
    pEventMobSlot->Release();
    pEventMobSlot = NULL;
  }

  if (pMobSlot)
  {
    pMobSlot->Release();
    pMobSlot = NULL;
  }

  if (pEnumSlots)
  {
    pEnumSlots->Release();
    pEnumSlots = NULL;
  }

  if (pMob)
  {
    pMob->Release();
    pMob = NULL;
  }



  // Propogate the error if necessary.
  checkResult(hr);
}

//.........这里部分代码省略.........
		fprintf (stderr, "MultiByteToWideChar returned 0. Invalid multibyte string\n");
		exit(1);
	}
#endif

	// SetName() calls OMSimpleProperty::set() which does a memcpy of the mobname string
	// to an OMByte* variable 'bits()' at OMProperty.cpp:399
	// Found by setting an rwatch on mobname address.
	check(pMob->SetName(mobname));
	aafUInt32 size_before = 0;
	check(pMob->GetNameBufLen(&size_before));
	check(pHeader->AddMob(pMob));
	pMob->Release();
	pHeader->Release();
	pDictionary->Release();

	// All the work of storing to disk happens during Save()
	// The bits() variable is next read in OMType::contract() at OMType.cpp:137
	// which is called by ImplAAFTypeDefCharacter::externalize() at ImplAAFTypeDefCharacter.cpp:307
	// which is called by ImplAAFTypeDefString::externalize() at ImplAAFTypeDefString.cpp:584
	// which is called by OMSSStoredObject::save() at OMSSStoredObject.cpp:382
	check(pFile->Save());
	check(pFile->Close());
	pFile->Release();

	// OMCharacterStringProperty<CharacterType>::stringLength() at OMVariableSizePropertyT.h:80
	// calculates string length of AAF string properties

	// Read AAF file back in
	check(AAFFileOpenExistingRead(filename, mode, &pFile));

	// Get the Mob
	check(pFile->GetHeader(&pHeader));
	check(pHeader->LookupMob(TEST_MobID, &pMob));
	aafUInt32 size_after = 0;
	check(pMob->GetNameBufLen(&size_after));
	aafCharacter *mobname_after = new aafCharacter[size_after];
	check(pMob->GetName(mobname_after, size_after));

	// Compare Mob name before storing to disk with Mob name read back from disk
	int test_result = 0;
	if (size_before != size_after) {
		printf("size_before=%d != size_after=%d\n", size_before, size_after);
		test_result = 1;
	}
	else {
		if (memcmp(mobname, mobname_after, size_before) != 0) {
			printf("wchar_t* mobname and wchar_t* mobname_after differ:\n");
			printf("  %s\n", hexDump(mobname, size_before));
			printf("  %s\n", hexDump(mobname_after, size_after));
			test_result = 1;
		}
	}

	// Check if the multibyte (UTF-8) versions of mobname and mobname_after match.
	char *outputStr;
#ifndef _MSC_VER
	wlen = wcslen(mobname_after)*sizeof(aafCharacter) + 1;
	outputStr = new char [wlen];
	n = wcstombs (outputStr, mobname_after, wlen);
	if (n == -1)
	{
		fprintf(stderr, "Could not convert mobname_after to multibyte str\n");
		exit(1);
	}
#else