/**
* Sets (activates or deactivates) the speakers as defined in the given list.
*
* @param speakers all speakers to read the active flag from
*/
public void setSpeakers(List<Speaker> speakers) {
try {
Log.d(TAG, "setSpeakers() requesting...");
String idsString = "";
boolean first = true;
// The list of speakers to activate is a comma-separated string with
// the hex versions of the speakers' IDs
for (Speaker speaker : speakers) {
if (speaker.isActive()) {
if (!first) {
idsString += ",";
} else {
first = false;
}
idsString += speaker.getIdAsHex();
}
}
String url =
String.format(
"%s/ctrl-int/1/setspeakers?speaker-id=%s&session-id=%s",
session.getRequestBase(), idsString, session.sessionId);
RequestHelper.request(url, false);
} catch (Exception e) {
Log.e(TAG, "Could not set speakers: ", e);
}
}
/**
* Helper to control a speaker's relative volume. This relative volume is a value between 0 and
* 100 describing the relative volume of a speaker in comparison to the master volume. For this
* the URL parameters <code>%s/ctrl-int/1/setproperty?speaker-id=%s&dmcp.volume=%d</code> are
* used.
*
* @param speakerId ID of the speaker to control
* @param relativeVolume the relative volume to set
* @throws Exception
*/
private void setRelativeVolume(long speakerId, int relativeVolume) throws Exception {
String url;
url =
String.format(
"%s/ctrl-int/1/setproperty?speaker-id=%s&dmcp.volume=%d" + "&session-id=%s",
session.getRequestBase(), speakerId, relativeVolume, session.sessionId);
RequestHelper.request(url, false);
}
/**
* Helper to control a speakers's absolute volume. This uses the URL parameters <code>
* setproperty?dmcp.volume=%d&include-speaker-id=%s</code> which results in iTunes controlling the
* master volume and the selected speaker synchronously.
*
* @param speakerId ID of the speaker to control
* @param absoluteVolume the volume to set absolutely
* @throws Exception
*/
private void setAbsoluteVolume(long speakerId, int absoluteVolume) throws Exception {
String url;
url =
String.format(
"%s/ctrl-int/1/setproperty?dmcp.volume=%d&include-speaker-id=%s" + "&session-id=%s",
session.getRequestBase(), absoluteVolume, speakerId, session.sessionId);
RequestHelper.request(url, false);
}
/**
* Reads the list of available speakers
*
* @return list of available speakers
*/
public List<Speaker> getSpeakers(final List<Speaker> speakers) {
try {
Log.d(TAG, "getSpeakers() requesting...");
String temp =
String.format(
"%s/ctrl-int/1/getspeakers?session-id=%s",
session.getRequestBase(), session.sessionId);
byte[] raw = RequestHelper.request(temp, false);
Response response = ResponseParser.performParse(raw);
Response casp = response.getNested("casp");
if (casp != null) {
speakers.clear();
}
List<Response> mdclArray = casp.findArray("mdcl");
// Master volume is required to compute the speakers' absolute volume
long masterVolume = getVolume();
for (Response mdcl : mdclArray) {
Speaker speaker = new Speaker();
speaker.setName(mdcl.getString("minm"));
long id = mdcl.getNumberLong("msma");
speaker.setId(id);
Log.d(TAG, "Speaker = " + speaker.getName());
int relativeVolume = (int) mdcl.getNumberLong("cmvo");
boolean isActive = mdcl.containsKey("caia");
speaker.setActive(isActive);
// mastervolume/100 * relativeVolume/100 * 100
int absoluteVolume = isActive ? (int) masterVolume * relativeVolume / 100 : 0;
speaker.setAbsoluteVolume(absoluteVolume);
speakers.add(speaker);
}
} catch (Exception e) {
Log.e(TAG, "Could not get speakers: ", e);
speakers.clear();
Speaker speaker = new Speaker();
speaker.setName("Computer");
speaker.setId(1);
speaker.setActive(true);
speaker.setAbsoluteVolume(50);
speakers.add(speaker);
}
return speakers;
}
