/// <summary>
/// Retrieves the attribute names for a given playlist-based attribute source.
/// </summary>
/// <param name="Source">An AttributeSource specifying the type of media to inspect</param>
/// <returns>void</returns>
private void getMetadataFromPlaylist(AttributeSource Source)
{
IWMPPlaylist playlist = null;
string name = "";
try
{
switch (Source)
{
// DVDs and CDs use the same CD object.
case AttributeSource.DVDToc:
case AttributeSource.CDPlaylist:
playlist = CD.Playlist;
break;
case AttributeSource.PlaylistCollection:
// Retrieve a playlist from the PlaylistCollection.
playlist = PLCollection.getAll().Item(0);
break;
case AttributeSource.CurrentPlaylist:
playlist = Player.currentPlaylist;
break;
default:
// This is strictly for debugging, it should never happen.
// If it does, we need a new case here or to fix the calling function.
throw new ArgumentOutOfRangeException("Source");
}
int cAttributes = playlist.attributeCount;
// Log the attribute name and writability.
for (int i = 0; i < cAttributes; i++)
{
name = playlist.get_attributeName(i);
ListViewItem item = new ListViewItem(Source.ToString());
item.SubItems.Add(name);
item.SubItems.Add(playlist.getItemInfo(name));
// We'll assume it's read-only.
// If we can actually write it, we'll flip the bool.
// We do this because there is no IsReadOnlyItem property
// available on the playlist object.
bool bRO = true;
try
{
// Cache the value.
string temp = playlist.getItemInfo(name);
// Try to write something.
playlist.setItemInfo(name, "random");
// Write back the cached value.
playlist.setItemInfo(name, temp);
bRO = false;
}
catch (COMException)
{
// Writing the test value failed.
// bRO is true by default, so nothing to do here.
}
item.SubItems.Add(bRO.ToString());
listView1.Items.Add(item);
}
}
catch (NullReferenceException)
{
ListViewItem item2 = new ListViewItem(Source.ToString());
item2.SubItems.Add("NullReferenceException");
item2.SubItems.Add("Does your library contain a playlist?");
listView1.Items.Add(item2);
}
catch (ArgumentOutOfRangeException exc)
{
lblStatus.Text = "Invalid parameter in getMetadataFromPlaylist: " + exc.Message;
}
catch (COMException exc)
{
lblStatus.Text = "Exception in getMetadata: " + exc.Message;
}
catch
{
lblStatus.Text = "Exception in getMetadata.";
throw;
}
}
/// <summary>
/// Retrieves the attribute names for a given playlist-based attribute source.
/// </summary>
/// <param name="Source">An AttributeSource specifying the type of media to inspect</param>
/// <returns>void</returns>
private void getMetadataFromPlaylist(AttributeSource Source)
{
IWMPPlaylist playlist = null;
string name = "";
try
{
switch (Source)
{
// DVDs and CDs use the same CD object.
case AttributeSource.DVDToc:
case AttributeSource.CDPlaylist:
playlist = CD.Playlist;
break;
case AttributeSource.PlaylistCollection:
// Retrieve a playlist from the PlaylistCollection.
playlist = PLCollection.getAll().Item(0);
break;
case AttributeSource.CurrentPlaylist:
playlist = Player.currentPlaylist;
break;
default:
// This is strictly for debugging, it should never happen.
// If it does, we need a new case here or to fix the calling function.
throw new ArgumentOutOfRangeException("Source");
}
int cAttributes = playlist.attributeCount;
// Log the attribute name and writability.
for (int i = 0; i < cAttributes; i++)
{
name = playlist.get_attributeName(i);
ListViewItem item = new ListViewItem(Source.ToString());
item.SubItems.Add(name);
item.SubItems.Add(playlist.getItemInfo(name));
// We'll assume it's read-only.
// If we can actually write it, we'll flip the bool.
// We do this because there is no IsReadOnlyItem property
// available on the playlist object.
bool bRO = true;
try
{
// Cache the value.
string temp = playlist.getItemInfo(name);
// Try to write something.
playlist.setItemInfo(name, "random");
// Write back the cached value.
playlist.setItemInfo(name, temp);
bRO = false;
}
catch (COMException)
{
// Writing the test value failed.
// bRO is true by default, so nothing to do here.
}
item.SubItems.Add(bRO.ToString());
listView1.Items.Add(item);
}
}
catch (NullReferenceException)
{
ListViewItem item2 = new ListViewItem(Source.ToString());
item2.SubItems.Add("NullReferenceException");
item2.SubItems.Add("Does your library contain a playlist?");
listView1.Items.Add(item2);
}
catch (ArgumentOutOfRangeException exc)
{
lblStatus.Text = "Invalid parameter in getMetadataFromPlaylist: " + exc.Message;
}
catch (COMException exc)
{
lblStatus.Text = "Exception in getMetadata: " + exc.Message;
}
catch
{
lblStatus.Text = "Exception in getMetadata.";
throw;
}
}
/// <summary>
/// Displays the attribute information for a given media-based attribute source.
/// </summary>
/// <param name="Source">An AttributeSource specifying the schema to inspect.</param>
/// <returns>void</returns>
private void getMetadataFromMedia(AttributeSource Source)
{
IWMPPlaylist playlist = null;
IWMPMedia media = null;
string name = "";
try
{
switch (Source)
{
case AttributeSource.CDTrack:
playlist = CD.Playlist;
break;
case AttributeSource.CurrentMedia:
playlist = Player.currentPlaylist;
break;
default:
// Get a playlist filled with media for the specified schema.
playlist = MediaCollection.getByAttribute("MediaType", Source.ToString());
break;
}
if (0 != playlist.count)
{
// Get the first item from the playlist.
media = playlist.get_Item(0);
}
else
{
throw new EmptyPlaylistException();
}
int cAttributes = media.attributeCount;
// Log the attribute name, value, and writability.
for (int i = 0; i < cAttributes; i++)
{
name = media.getAttributeName(i);
ListViewItem item = new ListViewItem(Source.ToString());
item.SubItems.Add(name);
item.SubItems.Add(media.getItemInfo(name));
bool bRO = media.isReadOnlyItem(name);
item.SubItems.Add(bRO.ToString());
listView1.Items.Add(item);
}
}
catch (EmptyPlaylistException)
{
ListViewItem item3 = new ListViewItem(Source.ToString());
item3.SubItems.Add("EmptyPlaylistException");
item3.SubItems.Add("Does your library contain media for this type or source?");
listView1.Items.Add(item3);
}
catch (COMException exc)
{
lblStatus.Text = "Exception in getMetadata: " + exc.Message;
}
catch
{
lblStatus.Text = "Exception in getMetadata.";
throw;
}
// Insert an empty line in the listview.
ListViewItem item2 = new ListViewItem("");
listView1.Items.Add(item2);
}
/// <summary>
/// Displays the attribute information for a given media-based attribute source.
/// </summary>
/// <param name="Source">An AttributeSource specifying the schema to inspect.</param>
/// <returns>void</returns>
private void getMetadataFromMedia(AttributeSource Source)
{
IWMPPlaylist playlist = null;
IWMPMedia media = null;
string name = "";
try
{
switch (Source)
{
case AttributeSource.CDTrack:
playlist = CD.Playlist;
break;
case AttributeSource.CurrentMedia:
playlist = Player.currentPlaylist;
break;
default:
// Get a playlist filled with media for the specified schema.
playlist = MediaCollection.getByAttribute("MediaType", Source.ToString());
break;
}
if (0 != playlist.count)
{
// Get the first item from the playlist.
media = playlist.get_Item(0);
}
else
{
throw new EmptyPlaylistException();
}
int cAttributes = media.attributeCount;
// Log the attribute name, value, and writability.
for (int i = 0; i < cAttributes; i++)
{
name = media.getAttributeName(i);
ListViewItem item = new ListViewItem(Source.ToString());
item.SubItems.Add(name);
item.SubItems.Add(media.getItemInfo(name));
bool bRO = media.isReadOnlyItem(name);
item.SubItems.Add(bRO.ToString());
listView1.Items.Add(item);
}
}
catch (EmptyPlaylistException)
{
ListViewItem item3 = new ListViewItem(Source.ToString());
item3.SubItems.Add("EmptyPlaylistException");
item3.SubItems.Add("Does your library contain media for this type or source?");
listView1.Items.Add(item3);
}
catch (COMException exc)
{
lblStatus.Text = "Exception in getMetadata: " + exc.Message;
}
catch
{
lblStatus.Text = "Exception in getMetadata.";
throw;
}
// Insert an empty line in the listview.
ListViewItem item2 = new ListViewItem("");
listView1.Items.Add(item2);
}