private async Task <bool> GetPlayStatusUpdateAsync(CancellationToken cancellationToken)
{
// Do not pass the cancellation token to the HTTP request since canceling a request will cause iTunes to close the current session.
DacpRequest request = new DacpRequest("/ctrl-int/1/playstatusupdate");
request.QueryParameters["revision-number"] = _playStatusRevisionNumber.ToString();
try
{
var response = await SendRequestAsync(request).ConfigureAwait(false);
// Do we still need to process this response?
if (cancellationToken.IsCancellationRequested)
{
return(false);
}
// Process response
var nodes = DacpNodeDictionary.Parse(response.Nodes);
_playStatusRevisionNumber = nodes.GetInt("cmsr");
// Current item and container IDs
if (nodes.ContainsKey("canp"))
{
byte[] value = nodes["canp"];
byte[] dbID = { value[0], value[1], value[2], value[3] };
byte[] containerID = { value[4], value[5], value[6], value[7] };
byte[] containerItemID = { value[8], value[9], value[10], value[11] };
byte[] itemID = { value[12], value[13], value[14], value[15] };
CurrentDatabaseID = dbID.GetInt32Value();
CurrentContainerID = containerID.GetInt32Value();
CurrentContainerItemID = containerItemID.GetInt32Value();
CurrentItemID = itemID.GetInt32Value();
}
else
{
CurrentDatabaseID = 0;
CurrentContainerID = 0;
CurrentContainerItemID = 0;
CurrentItemID = 0;
}
CurrentItemSignature = string.Format("{0}|{1}|{2}|{3}", CurrentDatabaseID, CurrentContainerID, CurrentContainerItemID, CurrentItemID);
// Current item info
CurrentArtistName = nodes.GetString("cana");
CurrentAlbumName = nodes.GetString("canl");
CurrentSongName = nodes.GetString("cann");
CurrentAlbumPersistentID = (UInt64)nodes.GetLong("asai");
// Play state
CurrentPlayState = (PlayState)nodes.GetByte("caps");
// Track time
UpdateTrackTime(nodes.GetInt("cast"), nodes.GetNullableInt("cant"));
// Shuffle
int caas = nodes.GetInt("caas");
IsShuffleAvailable = (caas & (1 << 1)) != 0;
CurrentShuffleMode = nodes.GetBool("cash");
// Repeat
int caar = nodes.GetInt("caar");
IsRepeatOneAvailable = (caar & (1 << 1)) != 0;
IsRepeatAllAvailable = (caar & (1 << 2)) != 0;
IsRepeatAvailable = (IsRepeatOneAvailable || IsRepeatAllAvailable);
CurrentRepeatMode = (RepeatMode)nodes.GetByte("carp");
//CurrentMediaKind = nodes.GetInt("cmmk");
//ShowUserRating = nodes.GetBool("casu");
// dacp.visualizer
IsVisualizerEnabled = nodes.GetBool("cavs");
// dacp.visualizerenabled
IsVisualizerAvailable = nodes.GetBool("cave");
// dacp.fullscreen
IsFullScreenModeEnabled = nodes.GetBool("cafs");
// dacp.fullscreenenabled
IsFullScreenModeAvailable = nodes.GetBool("cafe");
// iTunes Radio
iTunesRadioControlState newiTunesRadioControlState = 0;
if (iTunesRadioDatabase != null && iTunesRadioDatabase.ID == CurrentDatabaseID)
{
IsPlayingiTunesRadio = true;
CurrentiTunesRadioStationName = nodes.GetString("ceNR");
// caks = 1 when the next button is disabled, and 2 when it's enabled
if (nodes.GetByte("caks") != 1)
{
newiTunesRadioControlState |= iTunesRadioControlState.NextButtonEnabled;
}
// "aelb" indicates whether the star button (iTunes Radio menu) should be enabled, but this only seems to be set to true
// when connected via Home Sharing. This parameter is missing when an ad is playing, so use this to determine whether
// the menu should be enabled.
if (nodes.ContainsKey("aelb"))
{
newiTunesRadioControlState |= iTunesRadioControlState.MenuEnabled;
}
if (nodes.GetByte("aels") == 2)
{
newiTunesRadioControlState |= iTunesRadioControlState.CurrentSongFavorited;
}
}
else
{
IsPlayingiTunesRadio = false;
}
CurrentiTunesRadioControlState = newiTunesRadioControlState;
IsTrackTimePositionBarEnabled = nodes.GetBool("casc", true);
// Genius Shuffle
IsPlayingGeniusShuffle = nodes.GetBool("ceGs");
// There are two other nodes related to Genius Shuffle, "ceGS" and "aeGs" (currently unknown)
if (CurrentPlayState == PlayState.FastForward || CurrentPlayState == PlayState.Rewind)
{
BeginRepeatedTrackTimeRequests();
}
await GetVolumeLevelAsync().ConfigureAwait(false);
await GetSpeakersAsync().ConfigureAwait(false);
//var volumeTask = UpdateCurrentVolumeLevelAsync();
//var userRatingTask = UpdateCurrentSongUserRatingAsync();
//var playQueueTask = UpdatePlayQueueContentsAsync();
//Task[] tasks = new[] { volumeTask, userRatingTask, playQueueTask };
#if WP7
//await TaskEx.WhenAll(tasks).ConfigureAwait(false);
#else
//await Task.WhenAll(tasks).ConfigureAwait(false);
#endif
//SubmitGetSpeakersRequest();
PlayStatusUpdated.RaiseOnUIThread(this, new EventArgs());
}
catch { return(false); }
return(true);
}
private async Task <bool> GetSpeakersAsync()
{
DacpRequest request = new DacpRequest("/ctrl-int/1/getspeakers");
try
{
var response = await SendRequestAsync(request).ConfigureAwait(false);
var speakerNodes = response.Nodes.Where(n => n.Key == "mdcl").Select(n => DacpNodeDictionary.Parse(n.Value)).ToList();
var speakers = Speakers;
// Determine whether we need to replace the list of speakers
bool replaceSpeakers = false;
if (speakers == null || speakers.Count != speakerNodes.Count)
{
replaceSpeakers = true;
}
else
{
// Determine whether we still have the same speaker IDs
for (int i = 0; i < speakers.Count; i++)
{
if (speakers[i].ID != (UInt64)speakerNodes[i].GetLong("msma"))
{
replaceSpeakers = true;
break;
}
}
}
// Create the new list of speakers or update the existing speakers
if (replaceSpeakers)
{
Speakers = speakerNodes.Select(n => new AirPlaySpeaker(this, n)).ToList();
}
else
{
for (int i = 0; i < speakers.Count; i++)
{
speakers[i].ProcessNodes(speakerNodes[i]);
}
}
}
catch { return(false); }
return(true);
}
public AirPlaySpeaker(DacpClient client, DacpNodeDictionary nodes)
{
_client = client;
ProcessNodes(nodes);
}
internal Task <IDacpList> GetAlphaGroupedListAsync <T>(DacpRequest request, Func <DacpNodeDictionary, T> itemGenerator, string listKey = DacpUtility.DefaultListKey)
{
return(GetAlphaGroupedListAsync(request, b => itemGenerator(DacpNodeDictionary.Parse(b)), listKey));
}
protected virtual void ProcessNodes(DacpNodeDictionary nodes)
{
ID = nodes.GetInt("miid");
PersistentID = (UInt64)nodes.GetLong("mper");
Name = nodes.GetString("minm");
}
public DacpElement(DacpClient client, DacpNodeDictionary nodes)
{
Client = client;
ProcessNodes(nodes);
}
public static IEnumerable <T> GetItemsFromNodes <T>(IEnumerable <DacpNode> nodes, Func <DacpNodeDictionary, T> itemGenerator, string listKey = DefaultListKey)
{
return(GetItemsFromNodes(nodes, d => itemGenerator(DacpNodeDictionary.Parse(d)), listKey));
}
public static IEnumerable <T> GetItemsFromNodes <T>(byte[] data, Func <DacpNodeDictionary, T> itemGenerator, string listKey = DefaultListKey)
{
return(GetItemsFromNodes(GetResponseNodes(data), d => itemGenerator(DacpNodeDictionary.Parse(d)), listKey));
}
public static IDacpList GetAlphaGroupedDacpList <T>(IEnumerable <DacpNode> nodes, Func <DacpNodeDictionary, T> itemGenerator, out List <T> items, string listKey = DefaultListKey, bool useGroupMinimums = true)
{
return(GetAlphaGroupedDacpList(nodes, d => itemGenerator(DacpNodeDictionary.Parse(d)), out items, listKey, useGroupMinimums));
}