BOOL _PLMTPC_Seek(PlayListManager manager, int trackNumber)
{
PlayListManager_PC state = (PlayListManager_PC)manager->InternalState;
BOOL result = FALSE;
if(trackNumber >= state->StartingTrackNumber && trackNumber <= (state->StartingTrackNumber + state->Count - 1))
{
int index = trackNumber - state->StartingTrackNumber;
if(manager->TrackMetaData != NULL)
{
CDS_ObjRef_Release(manager->TrackMetaData);
manager->TrackMetaData = NULL;
}
String_Destroy(manager->TrackURI);
manager->TrackURI = NULL;
manager->TrackMetaData = state->Objects[index];
CDS_ObjRef_Add(manager->TrackMetaData);
manager->TrackNumber = trackNumber;
manager->TrackURI = String_Create(manager->TrackMetaData->Res->Value);
result = TRUE;
}
else
{
if(Browse(state, trackNumber) == TRUE)
{
if(manager->TrackMetaData != NULL)
{
CDS_ObjRef_Release(manager->TrackMetaData);
manager->TrackMetaData = NULL;
}
String_Destroy(manager->TrackURI);
manager->TrackURI = NULL;
manager->TrackMetaData = state->Objects[0];
CDS_ObjRef_Add(manager->TrackMetaData);
manager->TrackNumber = trackNumber;
manager->TrackURI = String_Create(manager->TrackMetaData->Res->Value);
result = TRUE;
}
else
{
if(manager->TrackMetaData != NULL)
{
CDS_ObjRef_Release(manager->TrackMetaData);
manager->TrackMetaData = NULL;
}
String_Destroy(manager->TrackURI);
manager->TrackURI = NULL;
result = FALSE;
}
}
return result;
}
/* Methods */
void _PLMTPC_Destroy(PlayListManager manager)
{
PlayListManager_PC state = (PlayListManager_PC)manager->InternalState;
if(state != NULL)
{
sem_wait(&state->LockObject);
sem_destroy(&state->LockObject);
String_Destroy(state->UDN);
String_Destroy(state->ServiceID);
String_Destroy(state->ContainerID);
String_Destroy(state->FirstItemID);
String_Destroy(state->SortArgs);
ClearMetadata(state);
free(state);
}
if(manager->TrackURI != NULL)
{
free(manager->TrackURI);
}
if(manager->TrackMetaData != NULL)
{
CDS_ObjRef_Release(manager->TrackMetaData);
}
sem_destroy(&manager->LockObject);
if(manager->ShuffleArray != NULL)
{
BitArray_Destroy(manager->ShuffleArray);
}
free(manager);
}
/* Methods */
void _PLMTS_Destroy(PlayListManager manager)
{
PlayListManager_S state = (PlayListManager_S)manager->InternalState;
if(state != NULL)
{
sem_wait(&state->FirstBlockFinished);
sem_destroy(&state->FirstBlockFinished);
sem_wait(&state->BlocksFinished);
sem_destroy(&state->BlocksFinished);
CircularBuffer_Destroy(state->_buffer);
IndexBlocks_Destroy(state->Blocks);
free(state);
}
if(manager->TrackURI != NULL)
{
free(manager->TrackURI);
}
if(manager->TrackMetaData != NULL)
{
CDS_ObjRef_Release(manager->TrackMetaData);
}
sem_destroy(&manager->LockObject);
if(manager->ShuffleArray != NULL)
{
BitArray_Destroy(manager->ShuffleArray);
}
free(manager);
}
void ClearMetadata(PlayListManager_PC instance)
{
int i;
for(i = 0; i < instance->Count; i++)
{
if(instance->Objects[i] != NULL)
{
CDS_ObjRef_Release(instance->Objects[i]);
instance->Objects[i] = NULL;
}
}
instance->Count = 0;
}
void _Callback2(struct UPnPService *sender, int ErrorCode, void *user,
char* Result, unsigned int NumberReturned,
unsigned int TotalMatches, unsigned int UpdateID)
{
PlayListManager_PC state = (PlayListManager_PC)user;
struct ILibXMLNode* root = NULL;
int count = (int)NumberReturned;
state->Error = -ErrorCode;
if(ErrorCode != 0)
{
sem_post(&state->LockObject);
return;
}
ClearMetadata(state);
if((int)TotalMatches != state->Parent->TrackCount)
{
state->Parent->TrackCount = (int)TotalMatches;
BitArray_ChangeSize(state->Parent->ShuffleArray, state->Parent->TrackCount);
if(state->Parent->OnTrackCountChanged != NULL)
{
state->Parent->OnTrackCountChanged(state->Parent);
}
}
root = ILibParseXML(Result, 0, (int)strlen(Result));
if(root != NULL)
{
BOOL failure = FALSE;
if(ILibProcessXMLNodeList(root) == 0)
{
int i = 0;
struct ILibXMLNode* item = root->Next;
ILibXML_BuildNamespaceLookupTable(root);
while(item != NULL && i < count)
{
struct ILibXMLAttribute* attrs = ILibGetXMLAttributes(item);
if(attrs != NULL)
{
state->Objects[i] = CDS_DeserializeDidlToObject(item, attrs, 1, Result, Result + strlen(Result));
ILibDestructXMLAttributeList(attrs);
}
else
{
failure = TRUE;
state->Objects[i] = NULL;
}
i++;
item = item->Peer;
}
}
ILibDestructXMLNodeList(root);
if(failure == TRUE)
{
int i;
state->Count = 0;
for(i = 0; i < count; i++)
{
if(state->Objects[i] != NULL)
{
CDS_ObjRef_Release(state->Objects[i]);
state->Objects[i] = NULL;
}
}
state->Error = 1;
}
state->Count = count;
}
else
{
state->Error = 2;
}
sem_post(&state->LockObject);
}
BOOL _PLMTS_Seek(PlayListManager manager, int trackNumber)
{
char* format = "<DIDL-Lite xmlns=\"urn:schemas-upnp-org:metadata-1-0/DIDL-Lite/\" xmlns:dc=\"http://purl.org/dc/elements/1.1/\" xmlns:upnp=\"urn:schemas-upnp-org:metadata-1-0/upnp/\" xmlns:dlna=\"urn:schemas-dlna-org:metadata-1-0/\">%s</DIDL-Lite>";
char* fragment = NULL;
char* xml = NULL;
BOOL result = FALSE;
char* metadata = NULL;
int offset = 0;
int length = 0;
PlayListManager_S state = (PlayListManager_S)manager->InternalState;
metadata = _GetTrackMetadata(state, trackNumber - 1, &offset, &length);
if(metadata == NULL)
{
return FALSE;
}
fragment = ILibString_Copy(metadata + offset, length);
xml = (char*)malloc(strlen(fragment) + strlen(format));
sprintf(xml, format, fragment);
free(fragment);
free(metadata);
if(xml != NULL)
{
struct ILibXMLNode* root = ILibParseXML(xml, 0, (int)strlen(xml));
if(root != NULL)
{
if(ILibProcessXMLNodeList(root) == 0)
{
ILibXML_BuildNamespaceLookupTable(root);
if(root->Next != NULL)
{
struct ILibXMLNode* item = root->Next;
struct ILibXMLAttribute* attrs = ILibGetXMLAttributes(item);
if(attrs != NULL)
{
struct CdsObject* cdsItem = CDS_DeserializeDidlToObject(item, attrs, 1, metadata + offset, metadata + offset + length);
if(cdsItem != NULL)
{
if(state->Parent->TrackMetaData != NULL)
{
CDS_ObjRef_Release(state->Parent->TrackMetaData);
state->Parent->TrackMetaData = NULL;
}
if(state->Parent->TrackURI != NULL)
{
free(state->Parent->TrackURI);
state->Parent->TrackURI = NULL;
}
state->Parent->TrackNumber = trackNumber;
state->Parent->TrackMetaData = cdsItem;
state->Parent->TrackNumber = trackNumber;
result = TRUE;
}
ILibDestructXMLAttributeList(attrs);
}
}
}
ILibDestructXMLNodeList(root);
}
free(xml);
}
return result;
}