/*
* Ask the server to create a new play for us, and queue it up
*/
private IEnumerator RequestNextPlay()
{
if (pendingRequest != null) {
// we're already waiting for a play to come in
yield break;
}
yield return StartCoroutine (EnsureClientId ());
while (clientId != null) {
Ajax ajax = new Ajax(Ajax.RequestType.POST, apiServerBase + "/play");
ajax.addParameter("formats", formats);
ajax.addParameter("client_id", clientId);
ajax.addParameter("max_bitrate", maxBitrate);
if (!String.IsNullOrEmpty(_placementId)) {
ajax.addParameter("placement_id", _placementId);
}
if (!String.IsNullOrEmpty(_stationId)) {
ajax.addParameter ("station_id", _stationId);
}
// let the rest of the code know we're awaiting a response
pendingRequest = new PendingRequest {
ajax = ajax,
retryCount = 0
};
yield return StartCoroutine(SignedRequest(ajax));
if ((pendingRequest == null) || (pendingRequest.ajax != ajax)) {
// another request snuck in while waiting for the response to this one,
// so we don't care about this one any more - just quit
yield break;
}
if (ajax.success) {
inUS = true;
pendingRequest = null;
if (current != null) {
// play this when the current song is complete
pendingPlay = ajax.response["play"];
} else {
// start playing this right now, since nothing else is active
AssignCurrentPlay (ajax.response["play"]);
}
yield break;
} else if (ajax.error == (int) FeedError.NoMoreMusic) {
if (current != null) {
// ran out of music to play, but we're still playing something, so
// just make a note here
pendingPlay = null;
} else {
// ran out of music, and nothing else to play
exhausted = true;
if (onPlaysExhausted != null) onPlaysExhausted(this);
}
pendingRequest = null;
yield break;
} else if (ajax.error == (int) FeedError.NotUS) {
// user isn't in the united states, so can't play anything
inUS = false;
if (onNotInUS != null) onNotInUS(this);
yield break;
} else {
// some unknown error
pendingRequest.retryCount++;
// wait for an increasingly long time before retrying
yield return new WaitForSeconds(0.5f * (float) Math.Pow(2.0, pendingRequest.retryCount));
}
}
}
/*
* Start pulling in music
*/
public virtual void Tune()
{
if (string.IsNullOrEmpty(token)) {
throw new Exception("no <token> value specified!");
}
if (string.IsNullOrEmpty(secret)) {
throw new Exception(" no <secret> value specified!");
}
// abort any pending requests or plays
pendingRequest = null;
pendingPlay = null;
// pretend we've got music available
exhausted = false;
// no music has started yet
startedPlayback = false;
// stop playback of current song and set status to waiting
AssignCurrentPlay(null, true);
// do some async shizzle
StartCoroutine (TuneCoroutine ());
}
