diff deps/Platinum/Source/Devices/MediaServer/PltMediaItem.cpp @ 0:3425707ddbf6

Initial import (hopefully this mercurial stuff works...)
author fraserofthenight
date Mon, 06 Jul 2009 08:06:28 -0700
parents
children
line wrap: on
line diff
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/deps/Platinum/Source/Devices/MediaServer/PltMediaItem.cpp	Mon Jul 06 08:06:28 2009 -0700
@@ -0,0 +1,701 @@
+/*****************************************************************
+|
+|   Platinum - AV Media Item
+|
+| Copyright (c) 2004-2008, Plutinosoft, LLC.
+| All rights reserved.
+| http://www.plutinosoft.com
+|
+| This program is free software; you can redistribute it and/or
+| modify it under the terms of the GNU General Public License
+| as published by the Free Software Foundation; either version 2
+| of the License, or (at your option) any later version.
+|
+| OEMs, ISVs, VARs and other distributors that combine and 
+| distribute commercially licensed software with Platinum software
+| and do not wish to distribute the source code for the commercially
+| licensed software under version 2, or (at your option) any later
+| version, of the GNU General Public License (the "GPL") must enter
+| into a commercial license agreement with Plutinosoft, LLC.
+| 
+| This program is distributed in the hope that it will be useful,
+| but WITHOUT ANY WARRANTY; without even the implied warranty of
+| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+| GNU General Public License for more details.
+|
+| You should have received a copy of the GNU General Public License
+| along with this program; see the file LICENSE.txt. If not, write to
+| the Free Software Foundation, Inc., 
+| 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+| http://www.gnu.org/licenses/gpl-2.0.html
+|
+****************************************************************/
+
+/*----------------------------------------------------------------------
+|   includes
++---------------------------------------------------------------------*/
+#include "PltMediaItem.h"
+#include "PltMediaServer.h"
+#include "PltMetadataHandler.h"
+#include "PltDidl.h"
+#include "PltXmlHelper.h"
+#include "PltService.h"
+
+NPT_SET_LOCAL_LOGGER("platinum.media.server.item")
+
+extern const char* didl_namespace_dc;
+extern const char* didl_namespace_upnp;
+
+/*----------------------------------------------------------------------
+|   PLT_PersonRoles::AddPerson
++---------------------------------------------------------------------*/
+NPT_Result
+PLT_PersonRoles::Add(const NPT_String& name, const NPT_String& role /* = "" */)
+{
+    PLT_PersonRole person;
+    person.name = name;
+    person.role = role;
+
+    return NPT_List<PLT_PersonRole>::Add(person);
+}
+
+/*----------------------------------------------------------------------
+|   PLT_PersonRoles::ToDidl
++---------------------------------------------------------------------*/
+NPT_Result
+PLT_PersonRoles::ToDidl(NPT_String& didl, const NPT_String& tag)
+{
+    NPT_String tmp;
+    for (NPT_List<PLT_PersonRole>::Iterator it = 
+         NPT_List<PLT_PersonRole>::GetFirstItem(); it; it++) {
+        // if there's an empty artist, allow it only if there's nothing else
+        if (it->name.IsEmpty() && m_ItemCount>1 && !tmp.IsEmpty()) continue;
+
+        tmp += "<upnp:" + tag;
+        if (!it->role.IsEmpty()) {
+            tmp += " role=\"";
+            PLT_Didl::AppendXmlEscape(tmp, it->role);
+            tmp += "\"";
+        }
+        tmp += ">";
+        PLT_Didl::AppendXmlEscape(tmp, it->name);
+        tmp += "</upnp:" + tag + ">";
+    }
+
+    didl += tmp;
+    return NPT_SUCCESS;
+}
+
+/*----------------------------------------------------------------------
+|   PLT_PersonRoles::ToDidl
++---------------------------------------------------------------------*/
+NPT_Result
+PLT_PersonRoles::FromDidl(const NPT_Array<NPT_XmlElementNode*>& nodes)
+{
+    for (NPT_Cardinal i=0; i<nodes.GetItemCount(); i++) {
+        PLT_PersonRole person;
+        const NPT_String* name = nodes[i]->GetText();
+        const NPT_String* role = nodes[i]->GetAttribute("role");
+        if (name) person.name = *name;
+        if (role) person.role = *role;
+        NPT_CHECK(NPT_List<PLT_PersonRole>::Add(person));
+    }
+    return NPT_SUCCESS;
+}
+
+/*----------------------------------------------------------------------
+|   PLT_MediaItemResource::PLT_MediaItemResource
++---------------------------------------------------------------------*/
+PLT_MediaItemResource::PLT_MediaItemResource()
+{
+    m_Uri             = "";
+    m_ProtocolInfo    = "";
+    m_Duration        = (NPT_UInt32)-1;
+    m_Size            = (NPT_Size)-1;
+    m_Protection      = "";
+    m_Bitrate         = (NPT_UInt32)-1;
+    m_BitsPerSample   = (NPT_UInt32)-1;
+    m_SampleFrequency = (NPT_UInt32)-1;
+    m_NbAudioChannels = (NPT_UInt32)-1;
+    m_Resolution      = "";
+    m_ColorDepth      = (NPT_UInt32)-1;
+}
+
+/*----------------------------------------------------------------------
+|   PLT_HttpFileRequestHandler_DefaultDlnaExtMapEntry
++---------------------------------------------------------------------*/
+typedef struct PLT_HttpFileRequestHandler_DefaultDlnaExtMapEntry {
+    const char* mime_type;
+    const char* dlna_ext;
+} PLT_HttpFileRequestHandler_DefaultDlnaExtMapEntry ;
+
+static const PLT_HttpFileRequestHandler_DefaultDlnaExtMapEntry 
+PLT_HttpFileRequestHandler_DefaultDlnaMap[] = {
+    {"image/gif",      "DLNA.ORG_PN=GIF_LRG"},
+    {"image/jpeg",     "DLNA.ORG_PN=JPEG_LRG"},
+    {"image/jp2",      "DLNA.ORG_PN=JPEG_LRG"},
+    {"image/png",      "DLNA.ORG_PN=PNG_LRG"},
+    {"image/bmp",      "DLNA.ORG_PN=BMP_LRG"},
+    {"image/tiff",     "DLNA.ORG_PN=TIFF_LRG"},
+    {"audio/mpeg",     "DLNA.ORG_PN=MP3;DLNA.ORG_OP=01;DLNA.ORG_CI=0"},
+    {"audio/mp4",      "DLNA.ORG_PN=AAC_ISO_320;DLNA.ORG_OP=01;DLNA.ORG_CI=0"},
+    {"audio/x-ms-wma", "DLNA.ORG_PN=WMABASE;DLNA.ORG_OP=01;DLNA.ORG_CI=0"},
+    {"audio/x-wav",    "DLNA.ORG_PN=WAV;DLNA.ORG_OP=01;DLNA.ORG_CI=0"},
+    {"video/avi",      "DLNA.ORG_PN=AVI;DLNA.ORG_OP=01;DLNA.ORG_CI=0"},
+    {"video/mp4",      "DLNA.ORG_PN=MPEG4_P2_SP_AAC;DLNA.ORG_CI=0"},
+    {"video/mpeg",     "DLNA.ORG_PN=MPEG_PS_PAL;DLNA.ORG_OP=01;DLNA.ORG_CI=0"},
+    {"video/x-ms-wmv", "DLNA.ORG_PN=WMVMED_FULL;DLNA.ORG_OP=01;DLNA.ORG_CI=0"},
+    {"video/x-ms-asf", "DLNA.ORG_OP=01;DLNA.ORG_CI=0"}
+};
+
+static const PLT_HttpFileRequestHandler_DefaultDlnaExtMapEntry 
+PLT_HttpFileRequestHandler_360DlnaMap[] = {
+    {"video/mp4",  "DLNA.ORG_OP=01;DLNA.ORG_CI=0"}
+};
+
+static const PLT_HttpFileRequestHandler_DefaultDlnaExtMapEntry 
+PLT_HttpFileRequestHandler_PS3DlnaMap[] = {
+    {"image/jpg",  "DLNA.ORG_OP=01"},
+    {"image/png",  "DLNA.ORG_OP=01"}
+};
+
+/*----------------------------------------------------------------------
+|   PLT_MediaObject::GetMimeType
++---------------------------------------------------------------------*/
+const char* 
+PLT_MediaObject::GetMimeType(const NPT_String& filename)
+{
+    int last_dot = filename.ReverseFind('.');
+    if (last_dot > 0) {
+        NPT_String extension = filename.GetChars()+last_dot+1;
+        extension.MakeLowercase();
+
+        for (unsigned int i=0; i<NPT_ARRAY_SIZE(NPT_HttpFileRequestHandler_DefaultFileTypeMap); i++) {
+            if (extension == NPT_HttpFileRequestHandler_DefaultFileTypeMap[i].extension) {
+                return NPT_HttpFileRequestHandler_DefaultFileTypeMap[i].mime_type;
+            }
+        }
+    }
+
+    return "application/unknown";
+}
+
+/*----------------------------------------------------------------------
+|   PLT_MediaObject::GetDlnaExtension
++---------------------------------------------------------------------*/
+const char* 
+PLT_MediaObject::GetDlnaExtension(const char*                   mime_type,
+                                  const PLT_HttpRequestContext& context)
+{
+    NPT_String _mime_type = mime_type;
+    _mime_type.MakeLowercase();
+    
+    // look for special case for 360
+    NPT_HttpRequest& request = (NPT_HttpRequest&)context.GetRequest();
+    const NPT_String* agent = request.GetHeaders().GetHeaderValue(NPT_HTTP_HEADER_USER_AGENT);
+    if (agent && (agent->Find("XBox", 0, true) >= 0 || agent->Find("Xenon", 0, true) >= 0)) {
+        for (unsigned int i=0; i<NPT_ARRAY_SIZE(PLT_HttpFileRequestHandler_360DlnaMap); i++) {
+            if (_mime_type == PLT_HttpFileRequestHandler_360DlnaMap[i].mime_type) {
+                return PLT_HttpFileRequestHandler_360DlnaMap[i].dlna_ext;
+            }
+        }
+        
+        return "*"; // Should we try default dlna instead?
+    }
+        
+    const NPT_String* hdr = request.GetHeaders().GetHeaderValue("X-AV-Client-Info");
+    if (hdr && hdr->Find("PLAYSTATION 3", 0, true) >= 0) {
+        for (unsigned int i=0; i<NPT_ARRAY_SIZE(PLT_HttpFileRequestHandler_PS3DlnaMap); i++) {
+            if (_mime_type == PLT_HttpFileRequestHandler_PS3DlnaMap[i].mime_type) {
+                return PLT_HttpFileRequestHandler_PS3DlnaMap[i].dlna_ext;
+            }
+        }
+        
+        return "DLNA.ORG_OP=01"; // Should we try default dlna instead?
+    }
+    
+    for (unsigned int i=0; i<NPT_ARRAY_SIZE(PLT_HttpFileRequestHandler_DefaultDlnaMap); i++) {
+        if (_mime_type == PLT_HttpFileRequestHandler_DefaultDlnaMap[i].mime_type) {
+            return PLT_HttpFileRequestHandler_DefaultDlnaMap[i].dlna_ext;
+        }
+    }
+
+    return "*";
+}
+
+/*----------------------------------------------------------------------
+|   PLT_MediaObject::GetProtInfo
++---------------------------------------------------------------------*/
+NPT_String
+PLT_MediaObject::GetProtInfo(const char*                   filepath, 
+                             const PLT_HttpRequestContext& context)
+{
+    NPT_String mime_type = GetMimeType(filepath);
+    return "http-get:*:"+mime_type+":"+GetDlnaExtension(mime_type, context);
+}
+
+/*----------------------------------------------------------------------
+|   PLT_MediaObject::GetUPnPClass
++---------------------------------------------------------------------*/
+const char*
+PLT_MediaObject::GetUPnPClass(const char*                   filepath, 
+                              const PLT_HttpRequestContext& context)
+{
+    NPT_COMPILER_UNUSED(context);
+
+    const char* ret = NULL;
+    NPT_String mime_type = GetMimeType(filepath);
+
+    if (mime_type.StartsWith("audio")) {
+        ret = "object.item.audioItem.musicTrack";
+    } else if (mime_type.StartsWith("video")) {
+        ret = "object.item.videoItem"; //Note: 360 wants "object.item.videoItem" and not "object.item.videoItem.Movie"
+    } else if (mime_type.StartsWith("image")) {
+        ret = "object.item.imageItem.photo";
+    } else {
+        ret = "object.item";
+    }
+
+    return ret;
+}
+
+/*----------------------------------------------------------------------
+|   PLT_MediaObject::Reset
++---------------------------------------------------------------------*/
+NPT_Result
+PLT_MediaObject::Reset() 
+{
+    m_ObjectClass.type = "";
+    m_ObjectClass.friendly_name = "";
+    m_ObjectID = "";
+    m_ParentID = "";
+
+    m_Title = "";
+    m_Creator = "";
+    m_Date = "";
+    m_Restricted = true;
+
+    m_People.actors.Clear();
+    m_People.artists.Clear();    
+    m_People.authors.Clear();
+
+    m_Affiliation.album     = "";
+    m_Affiliation.genre.Clear();
+    m_Affiliation.playlist  = "";
+
+    m_Description.description = "";
+    m_Description.long_description = "";
+    m_ExtraInfo.album_art_uri = "";
+    m_ExtraInfo.artist_discography_uri = "";
+
+    m_MiscInfo.original_track_number = 0;
+    m_MiscInfo.dvdregioncode = 0;
+    m_MiscInfo.toc = "";
+    m_MiscInfo.user_annotation = "";
+
+    m_Resources.Clear();
+
+    m_Didl = "";
+
+    return NPT_SUCCESS;
+}
+
+/*----------------------------------------------------------------------
+|   PLT_MediaObject::ToDidl
++---------------------------------------------------------------------*/
+NPT_Result
+PLT_MediaObject::ToDidl(NPT_UInt32 mask, NPT_String& didl)
+{
+    // title is required
+    didl += "<dc:title>";
+    PLT_Didl::AppendXmlEscape(didl, m_Title);
+    didl += "</dc:title>";
+
+    // creator
+    if (mask & PLT_FILTER_MASK_CREATOR && !m_Creator.IsEmpty()) {
+        didl += "<dc:creator>";
+        PLT_Didl::AppendXmlEscape(didl, m_Creator);
+        didl += "</dc:creator>";
+    }
+
+    // date
+    if (mask & PLT_FILTER_MASK_DATE && !m_Date.IsEmpty()) {
+        didl += "<dc:date>";
+        PLT_Didl::AppendXmlEscape(didl, m_Date);
+        didl += "</dc:date>";
+    } 
+
+    // artist
+    if (mask & PLT_FILTER_MASK_ARTIST) {
+        // force an empty artist just in case
+        if (m_People.artists.GetItemCount() == 0) m_People.artists.Add("");
+        m_People.artists.ToDidl(didl, "artist");
+    }
+
+    // actor
+    if (mask & PLT_FILTER_MASK_ACTOR) {
+        m_People.actors.ToDidl(didl, "actor");
+    }
+
+    // actor
+    if (mask & PLT_FILTER_MASK_AUTHOR) {
+        m_People.authors.ToDidl(didl, "author");
+    }
+    
+    // album
+    if (mask & PLT_FILTER_MASK_ALBUM && !m_Affiliation.album.IsEmpty()) {
+        didl += "<upnp:album>";
+        PLT_Didl::AppendXmlEscape(didl, m_Affiliation.album);
+        didl += "</upnp:album>";
+    }
+
+    // genre
+    if (mask & PLT_FILTER_MASK_GENRE) {
+        for (NPT_List<NPT_String>::Iterator it = 
+             m_Affiliation.genre.GetFirstItem(); it; ++it) {
+            didl += "<upnp:genre>";
+            PLT_Didl::AppendXmlEscape(didl, (*it));
+            didl += "</upnp:genre>";        
+        }
+    }
+
+    // album art URI
+    if (mask & PLT_FILTER_MASK_ALBUMARTURI && !m_ExtraInfo.album_art_uri.IsEmpty()) {
+        didl += "<upnp:albumArtURI";
+        if (!m_ExtraInfo.album_art_uri_dlna_profile.IsEmpty()) {
+            didl += " dlna:profileID=\"";
+            PLT_Didl::AppendXmlEscape(didl, m_ExtraInfo.album_art_uri_dlna_profile);
+            didl += "\"";
+        }
+        didl += ">";
+        PLT_Didl::AppendXmlEscape(didl, m_ExtraInfo.album_art_uri);
+        didl += "</upnp:albumArtURI>";
+    }
+
+    // description
+    if (mask & PLT_FILTER_MASK_DESCRIPTION && !m_Description.long_description.IsEmpty()) {
+        didl += "<upnp:longDescription>";
+        PLT_Didl::AppendXmlEscape(didl, m_Description.long_description);
+        didl += "</upnp:longDescription>";
+    }
+
+    // original track number
+    if (mask & PLT_FILTER_MASK_ORIGINALTRACK && m_MiscInfo.original_track_number > 0) {
+        didl += "<upnp:originalTrackNumber>";
+        didl += NPT_String::FromInteger(m_MiscInfo.original_track_number);
+        didl += "</upnp:originalTrackNumber>";
+    }
+
+    // resource
+    if (mask & PLT_FILTER_MASK_RES) {
+        for (NPT_Cardinal i=0; i<m_Resources.GetItemCount(); i++) {
+            if (m_Resources[i].m_ProtocolInfo.GetLength() > 0) {
+                // protocol info is required
+                didl += "<res";
+
+                if (mask & PLT_FILTER_MASK_RES_DURATION && m_Resources[i].m_Duration != (NPT_UInt32)-1) {
+                    didl += " duration=\"";
+                    PLT_Didl::FormatTimeStamp(didl, m_Resources[i].m_Duration);
+                    didl += "\"";
+                }
+
+                if (mask & PLT_FILTER_MASK_RES_SIZE && m_Resources[i].m_Size != (NPT_Size)-1) {
+                    didl += " size=\"";
+                    didl += NPT_String::FromIntegerU(m_Resources[i].m_Size);
+                    didl += "\"";
+                }
+
+                if (mask & PLT_FILTER_MASK_RES_PROTECTION && !m_Resources[i].m_Protection.IsEmpty()) {
+                    didl += " protection=\"";
+                    PLT_Didl::AppendXmlEscape(didl, m_Resources[i].m_Protection);
+                    didl += "\"";
+                }
+                
+                if (mask & PLT_FILTER_MASK_RES_RESOLUTION && !m_Resources[i].m_Resolution.IsEmpty()) {
+                    didl += " resolution=\"";
+                    PLT_Didl::AppendXmlEscape(didl, m_Resources[i].m_Resolution);
+                    didl += "\"";
+                }
+                
+                didl += " protocolInfo=\"";
+                PLT_Didl::AppendXmlEscape(didl, m_Resources[i].m_ProtocolInfo);
+                didl += "\">";
+                PLT_Didl::AppendXmlEscape(didl, m_Resources[i].m_Uri);
+                didl += "</res>";
+            }
+        }
+    }
+
+    // class is required
+    didl += "<upnp:class>";
+    PLT_Didl::AppendXmlEscape(didl, m_ObjectClass.type);
+    didl += "</upnp:class>";
+
+    return NPT_SUCCESS;
+}
+
+/*----------------------------------------------------------------------
+|   PLT_MediaObject::FromDidl
++---------------------------------------------------------------------*/
+NPT_Result
+PLT_MediaObject::FromDidl(NPT_XmlElementNode* entry)
+{
+    NPT_String str, xml;
+    NPT_Array<NPT_XmlElementNode*> children;
+    NPT_Result res;
+
+    // serialize the entry Didl as a we might need to pass it to a renderer
+    res = PLT_XmlHelper::Serialize(*entry, xml);
+    NPT_CHECK_LABEL_SEVERE(res, cleanup);
+    
+    m_Didl = didl_header + xml + didl_footer;    
+
+    // check if item is restricted (is default true?)
+    if (NPT_SUCCEEDED(PLT_XmlHelper::GetAttribute(entry, "restricted", str))) {
+        m_Restricted = PLT_Service::IsTrue(str);
+    }
+
+    res = PLT_XmlHelper::GetAttribute(entry, "id", m_ObjectID);
+    NPT_CHECK_LABEL_SEVERE(res, cleanup);
+
+    res = PLT_XmlHelper::GetAttribute(entry, "parentID", m_ParentID);
+    NPT_CHECK_LABEL_SEVERE(res, cleanup);
+
+    res = PLT_XmlHelper::GetChildText(entry, "title", m_Title, didl_namespace_dc);
+    NPT_CHECK_LABEL_SEVERE(res, cleanup);
+
+    res = PLT_XmlHelper::GetChildText(entry, "class", m_ObjectClass.type, didl_namespace_upnp);
+    NPT_CHECK_LABEL_SEVERE(res, cleanup);
+
+    // read non-required elements
+    PLT_XmlHelper::GetChildText(entry, "creator", m_Creator, didl_namespace_dc);
+    PLT_XmlHelper::GetChildText(entry, "date", m_Date, didl_namespace_dc);
+
+    PLT_XmlHelper::GetChildren(entry, children, "artist", didl_namespace_upnp);
+    m_People.artists.FromDidl(children);
+
+    PLT_XmlHelper::GetChildText(entry, "album", m_Affiliation.album, didl_namespace_upnp);
+
+    children.Clear();
+    PLT_XmlHelper::GetChildren(entry, children, "genre", didl_namespace_upnp);
+    for (NPT_Cardinal i=0; i<children.GetItemCount(); i++) {
+        if (children[i]->GetText()) {
+            m_Affiliation.genre.Add(*children[i]->GetText());
+        }
+    }
+
+    PLT_XmlHelper::GetChildText(entry, "albumArtURI", m_ExtraInfo.album_art_uri, didl_namespace_upnp);
+    PLT_XmlHelper::GetChildText(entry, "longDescription", m_Description.long_description, didl_namespace_upnp);
+    PLT_XmlHelper::GetChildText(entry, "originalTrackNumber", str, didl_namespace_upnp);
+    NPT_UInt32 value;
+    if (NPT_FAILED(str.ToInteger(value))) value = 0;
+    m_MiscInfo.original_track_number = value;
+
+    children.Clear();
+    PLT_XmlHelper::GetChildren(entry, children, "res");
+    if (children.GetItemCount() > 0) {
+        for (NPT_Cardinal i=0; i<children.GetItemCount(); i++) {
+            PLT_MediaItemResource resource;
+            if (children[i]->GetText() == NULL) {
+                goto cleanup;
+            }
+
+            resource.m_Uri = *children[i]->GetText();
+            if (NPT_FAILED(PLT_XmlHelper::GetAttribute(children[i], "protocolInfo", resource.m_ProtocolInfo))) {
+                goto cleanup;
+            }
+            
+            PLT_XmlHelper::GetAttribute(children[i], "protection", resource.m_Protection);
+            PLT_XmlHelper::GetAttribute(children[i], "resolution", resource.m_Resolution);
+
+            if (NPT_SUCCEEDED(PLT_XmlHelper::GetAttribute(children[i], "size", str))) {
+                if (NPT_FAILED(str.ToInteger(resource.m_Size))) resource.m_Size = (NPT_Size)-1;
+            }
+
+            if (NPT_SUCCEEDED(PLT_XmlHelper::GetAttribute(children[i], "duration", str))) {
+                if (NPT_FAILED(PLT_Didl::ParseTimeStamp(str, resource.m_Duration))) {
+                    // if error while converting, ignore and set to -1 to indicate we don't know the duration
+                    resource.m_Duration = (NPT_UInt32)-1;
+                }
+            }    
+            m_Resources.Add(resource);
+        }
+    }
+
+    return NPT_SUCCESS;
+
+cleanup:
+    return res;
+}
+
+/*----------------------------------------------------------------------
+|   PLT_MediaObjectList::PLT_MediaObjectList
++---------------------------------------------------------------------*/
+PLT_MediaObjectList::PLT_MediaObjectList()
+{
+}
+
+/*----------------------------------------------------------------------
+|   PLT_MediaObjectList::~PLT_MediaObjectList
++---------------------------------------------------------------------*/
+PLT_MediaObjectList::~PLT_MediaObjectList()
+{
+    Apply(NPT_ObjectDeleter<PLT_MediaObject>());
+}
+
+/*----------------------------------------------------------------------
+|   PLT_MediaItem::PLT_MediaItem
++---------------------------------------------------------------------*/
+PLT_MediaItem::PLT_MediaItem()
+{
+    Reset();
+}
+
+/*----------------------------------------------------------------------
+|   PLT_MediaItem::~PLT_MediaItem
++---------------------------------------------------------------------*/
+PLT_MediaItem::~PLT_MediaItem()
+{
+}
+
+/*----------------------------------------------------------------------
+|   PLT_MediaItem::ToDidl
++---------------------------------------------------------------------*/
+NPT_Result
+PLT_MediaItem::ToDidl(NPT_UInt32 mask, NPT_String& didl)
+{
+    NPT_String tmp;
+    // Allocate enough space for a big string we're going to concatenate in
+    tmp.Reserve(2048);
+
+    tmp = "<item id=\"";
+
+    PLT_Didl::AppendXmlEscape(tmp, m_ObjectID);
+    tmp += "\" parentID=\"";
+    PLT_Didl::AppendXmlEscape(tmp, m_ParentID);
+    tmp += "\" restricted=\"";
+    tmp += m_Restricted?"1\"":"0\"";
+
+    tmp += ">";
+
+    NPT_CHECK_SEVERE(PLT_MediaObject::ToDidl(mask, tmp));
+
+    /* close tag */
+    tmp += "</item>";
+
+    didl += tmp;
+    return NPT_SUCCESS;
+}
+
+/*----------------------------------------------------------------------
+|   PLT_MediaItem::FromDidl
++---------------------------------------------------------------------*/
+NPT_Result
+PLT_MediaItem::FromDidl(NPT_XmlElementNode* entry)
+{
+    /* reset first */
+    Reset();
+
+    if (entry->GetTag().Compare("item", true) != 0)
+        return NPT_ERROR_INTERNAL;
+
+    return PLT_MediaObject::FromDidl(entry);
+}
+
+/*----------------------------------------------------------------------
+|   PLT_MediaContainer::PLT_MediaContainer
++---------------------------------------------------------------------*/
+PLT_MediaContainer::PLT_MediaContainer()
+{
+    Reset();
+}
+
+/*----------------------------------------------------------------------
+|   PLT_MediaContainer::~PLT_MediaContainer
++---------------------------------------------------------------------*/
+PLT_MediaContainer::~PLT_MediaContainer(void)
+{
+}
+
+/*----------------------------------------------------------------------
+|   PLT_MediaContainer::Reset
++---------------------------------------------------------------------*/
+NPT_Result
+PLT_MediaContainer::Reset() 
+{
+    m_SearchClasses.Clear();
+    m_Searchable = true;
+    m_ChildrenCount = -1;
+
+    return PLT_MediaObject::Reset();
+}
+
+/*----------------------------------------------------------------------
+|   PLT_MediaContainer::ToDidl
++---------------------------------------------------------------------*/
+NPT_Result
+PLT_MediaContainer::ToDidl(NPT_UInt32 mask, NPT_String& didl)
+{
+    NPT_String tmp;
+    // Allocate enough space for a big string we're going to concatenate in
+    tmp.Reserve(2048);
+
+    tmp = "<container id=\"";
+
+    PLT_Didl::AppendXmlEscape(tmp, m_ObjectID);
+    tmp += "\" parentID=\"";
+    PLT_Didl::AppendXmlEscape(tmp, m_ParentID);
+    tmp += "\" restricted=\"";
+    tmp += m_Restricted?"1\"":"0\"";
+
+    if (mask & PLT_FILTER_MASK_SEARCHABLE) {
+        tmp += " searchable=\"";
+        tmp += m_Searchable?"1\"":"0\"";
+    }
+    
+    if (mask & PLT_FILTER_MASK_CHILDCOUNT && m_ChildrenCount != -1) {
+        tmp += " childCount=\"";
+        tmp += NPT_String::FromInteger(m_ChildrenCount);
+        tmp += "\"";
+    }
+
+    tmp += ">";
+
+    NPT_CHECK_SEVERE(PLT_MediaObject::ToDidl(mask, tmp));
+
+    /* close tag */
+    tmp += "</container>";
+
+    didl += tmp;
+    return NPT_SUCCESS;
+}
+
+/*----------------------------------------------------------------------
+|   PLT_MediaContainer::FromDidl
++---------------------------------------------------------------------*/
+NPT_Result
+PLT_MediaContainer::FromDidl(NPT_XmlElementNode* entry)
+{
+    NPT_String str;
+
+    /* reset first */
+    Reset();
+
+    // check entry type
+    if (entry->GetTag().Compare("Container", true) != 0) 
+        return NPT_ERROR_INTERNAL;
+
+    // check if item is searchable (is default true?)
+    if (NPT_SUCCEEDED(PLT_XmlHelper::GetAttribute(entry, "searchable", str))) {
+        m_Searchable = PLT_Service::IsTrue(str);
+    }
+
+    // look for childCount
+    if (NPT_SUCCEEDED(PLT_XmlHelper::GetAttribute(entry, "childCount", str))) {
+        NPT_UInt32 count;
+        NPT_CHECK_SEVERE(str.ToInteger(count));
+        m_ChildrenCount = count;
+    }
+
+    return PLT_MediaObject::FromDidl(entry);
+}