/// <summary>
/// Send a stop request to the DNLA device
/// </summary>
public async override void Stop()
{
// Assume the DLMA request will complte and clear some state variables first
IsPlaying = false;
ReleaseLock();
string request = DlnaRequestHelper.MakeRequest("POST", PlaybackDevice.PlayUrl, "urn:schemas-upnp-org:service:AVTransport:1#Stop",
PlaybackDevice.IPAddress, PlaybackDevice.Port, DlnaRequestHelper.MakeSoapRequest("Stop"));
// Run off the calling thread
string response = await Task.Run(() => DlnaRequestHelper.SendRequest(PlaybackDevice, request));
}
/// <summary>
/// Send a Play request to the DNLA device
/// </summary>
/// <returns></returns>
private async Task <bool> PlaySong()
{
string soapContent = DlnaRequestHelper.MakeSoapRequest("Play", "<Speed>1</Speed>\r\n");
string request = DlnaRequestHelper.MakeRequest("POST", PlaybackDevice.PlayUrl, "urn:schemas-upnp-org:service:AVTransport:1#Play",
PlaybackDevice.IPAddress, PlaybackDevice.Port, soapContent);
// Run off the calling thread
string response = await Task.Run(() => DlnaRequestHelper.SendRequest(PlaybackDevice, request));
return(DlnaRequestHelper.GetResponseCode(response) == 200);
}
/// <summary>
/// Send the Uri of the song to the DNLA device
/// </summary>
/// <param name="fileName"></param>
/// <returns></returns>
private async Task <bool> PrepareSong(string fileName, Song songToPlay)
{
string soapContent = DlnaRequestHelper.MakeSoapRequest("SetAVTransportURI",
$"<CurrentURI>{fileName}</CurrentURI>\r\n<CurrentURIMetaData>{Desc( fileName, songToPlay )}</CurrentURIMetaData>\r\n");
string request = DlnaRequestHelper.MakeRequest("POST", PlaybackDevice.PlayUrl, "urn:schemas-upnp-org:service:AVTransport:1#SetAVTransportURI",
PlaybackDevice.IPAddress, PlaybackDevice.Port, soapContent);
// Run off the calling thread
string response = await Task.Run(() => DlnaRequestHelper.SendRequest(PlaybackDevice, request));
return(DlnaRequestHelper.GetResponseCode(response) == 200);
}
/// <summary>
/// Send a Pause request to the DNLA device
/// </summary>
public async override void Pause()
{
string request = DlnaRequestHelper.MakeRequest("POST", PlaybackDevice.PlayUrl, "urn:schemas-upnp-org:service:AVTransport:1#Pause",
PlaybackDevice.IPAddress, PlaybackDevice.Port, DlnaRequestHelper.MakeSoapRequest("Pause"));
// Run off the calling thread
string response = await Task.Run(() => DlnaRequestHelper.SendRequest(PlaybackDevice, request));
if (DlnaRequestHelper.GetResponseCode(response) == 200)
{
IsPlaying = false;
ReleaseLock();
}
}
/// <summary>
/// Called when the position timer has elapsed.
/// Get the current playback posiotn from the DLNA device
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
protected override async void PositionTimerElapsed()
{
// Only process the timer if a song is being played
if (IsPlaying == true)
{
// Stop the timer whilst getting the position as it may take a while
StopTimer();
// Send the GetPositionInfo request and get the response
// Run off the calling thread
string response = await Task.Run(() => DlnaRequestHelper.SendRequest(PlaybackDevice,
DlnaRequestHelper.MakeRequest("POST", PlaybackDevice.PlayUrl, "urn:schemas-upnp-org:service:AVTransport:1#GetPositionInfo",
PlaybackDevice.IPAddress, PlaybackDevice.Port,
DlnaRequestHelper.MakeSoapRequest("GetPositionInfo"))));
if (DlnaRequestHelper.GetResponseCode(response) == 200)
{
durationMilliseconds = TimeStringToMilliseconds(response.TrimStart("<TrackDuration>").TrimAfter("</TrackDuration>"));
positionMilliseconds = TimeStringToMilliseconds(response.TrimStart("<RelTime>").TrimAfter("</RelTime>"));
Logger.Log($"Position: {positionMilliseconds}, Duration {durationMilliseconds}");
// Assume the track has not finished
bool nextTrack = false;
// If a chnage has already been schedukled then do it now
if (changeTrackNextTime == true)
{
nextTrack = true;
changeTrackNextTime = false;
}
else
{
// If the duration is 0 this could be due to missing the end of a song, or it can also happen at the
// very start of a track. So keep track of this and if it happens a few times switch to the next track
if (durationMilliseconds == 0)
{
if (++noPlayCount > 3)
{
nextTrack = true;
noPlayCount = 0;
}
}
else
{
noPlayCount = 0;
// If the position is within 1/4 second of the duration when assume this track has finished and move on to the next track.
// If the position is around 1 second of the duration then move on to the next track the next time this position is obtained
int timeLeft = Math.Abs(durationMilliseconds - positionMilliseconds);
if (timeLeft < 250)
{
nextTrack = true;
}
else if (timeLeft < 1050)
{
changeTrackNextTime = true;
}
}
}
if (nextTrack == true)
{
IsPlaying = false;
ReleaseLock();
ReportSongFinished();
}
}
else
{
// Failed to get the response - report this and try again when the timer expires
Logger.Error("Failed to get PositionInfo");
}
StartTimer();
}
base.PositionTimerElapsed();
}
