//-------------------------------------
// Production helper methods.
///////////////////////////////////////////////////////////////////////////////
// Description: Adds the Album Art part to the package and creates a package relationship to that has the Album Art part as its target.
///////////////////////////////////////////////////////////////////////////////
private static void AddAlbumArtToBundle(IOpcFactory opcFactory,
IOpcPartSet packagePartSet, // Represents the set of parts (excluding Relationships parts) in a package.
IOpcRelationshipSet packageRelationshipSet, // Represents the Relationships part that stores package relationships.
string inputDirectory // Directory location of the files specified in trackName and lyricsName.
)
{
// Add Album Art part.
AddPartToBundle(opcFactory, g_albumArt, packagePartSet, g_albumArtContentType, OPC_COMPRESSION_OPTIONS.OPC_COMPRESSION_NONE, inputDirectory, out IOpcPartUri albumArtPartUri, out _);
// Add a package relationship that has the Album Art part as its target.
packageRelationshipSet.CreateRelationship(default, // Use auto-generated relationship ID.
///////////////////////////////////////////////////////////////////////////////
// Description: Gets the relationship of the specified type from a specified relationship set.
// Note: Method expects exactly one relationship of the specified type. This limitation is described in the Music Bundle Package
// specification--and is not imposed by the Packaging APIs or the OPC.
///////////////////////////////////////////////////////////////////////////////
private static void GetRelationshipByType(IOpcRelationshipSet relsSet, // Relationship set that contains the relationship.
string relationshipType, // The relationship type of the relationship.
out IOpcRelationship targetRelationship // Recieves the relationship. Method may return a valid
// pointer even on failure, and the caller must always release if a non-default value is returned.
)
{
targetRelationship = null;
HRESULT hr = HRESULT.S_OK;
// Get an enumerator of all relationships of the required type.
IOpcRelationshipEnumerator relsEnumerator = relsSet.GetEnumeratorForType(relationshipType);
// Enumerate through relationships, ensuring that there is exactly one relationship that has the specified type.
var count = 0;
while (hr.Succeeded && (hr = relsEnumerator.MoveNext(out var hasNext)).Succeeded && hasNext)
{
count++;
if (count > 1)
{
// There is more than one relationship of the specified type.
Console.Error.Write("Invalid music bundle package: cannot have more than 1 relationship with type: {0}.\n", relationshipType);
// Set the return code to an error.
hr = HRESULT.E_FAIL;
// An error was encountered; stop enumerating.
break;
}
if (hr.Succeeded)
{
// Get the relationship at the current position of the enumerator.
hr = relsEnumerator.GetCurrent(out targetRelationship);
}
}
if (hr.Succeeded)
{
if (count == 0)
{
// There were no relationships in the set that had the specified type.
Console.Error.Write("Invalid music bundle package: relationship with type {0} does not exist.\n", relationshipType);
throw new InvalidOperationException();
}
}
else
{
throw new InvalidOperationException();
}
}
public void LoadTest()
{
Assert.That(factory.CreateStreamOnFile(TestCaseSources.WordDoc, OPC_STREAM_IO_MODE.OPC_STREAM_IO_READ, null, 0, out var sourceFileStream), ResultIs.Successful);
using var psourceFileString = ComReleaserFactory.Create(sourceFileStream);
Assert.That(factory.ReadPackageFromStream(sourceFileStream, OPC_READ_FLAGS.OPC_CACHE_ON_ACCESS, out var outPackage), ResultIs.Successful);
using var poutPackage = ComReleaserFactory.Create(outPackage);
IOpcPartSet pset = null;
Assert.That(() => pset = outPackage.GetPartSet(), Throws.Nothing);
using var ppset = ComReleaserFactory.Create(pset);
IOpcPartEnumerator penum = null;
Assert.That(() => penum = pset.GetEnumerator(), Throws.Nothing);
using var ppenum = new OpcEnumerator <IOpcPartEnumerator, IOpcPart>(penum);
while (ppenum.MoveNext())
{
TestContext.WriteLine($"{ppenum.Current.GetContentType()}, {ppenum.Current.GetCompressionOptions()}");
}
TestContext.WriteLine();
IOpcRelationshipSet rset = null;
Assert.That(() => rset = outPackage.GetRelationshipSet(), Throws.Nothing);
using var prset = ComReleaserFactory.Create(rset);
IOpcRelationshipEnumerator renum = null;
Assert.That(() => renum = rset.GetEnumerator(), Throws.Nothing);
using var prenum = new OpcEnumerator <IOpcRelationshipEnumerator, IOpcRelationship>(renum);
while (prenum.MoveNext())
{
TestContext.WriteLine($"{prenum.Current.GetId()}, {prenum.Current.GetRelationshipType()}, {prenum.Current.GetTargetMode()}");
}
TestContext.WriteLine();
}
