Add support for SqueezePlay based players to provide direct streaming…

… of HTTPS sources

- players wanting to support this feature need to be based on SqueezePlay (eg. SqueezeLite)
- the player needs to add „CanHTTPS=1“ to the capabilities string to announce this capability

Slim/Player/Client.pm

@@ -688,6 +688,8 @@ sub canDoReplayGain { return 0; }
 
 sub canPowerOff { return 1; }
 
+sub canHTTPS { return 0; }
+
 =head2 mixerConstant( $client, $feature, $aspect )
 
 Returns the requested aspect of a given mixer feature.

Slim/Player/Protocols/HTTPS.pm

@@ -49,7 +49,16 @@ sub new {
 	return $sock->request($args);
 }
 
-# we can't direct stream, as players don't support SSL 
-sub canDirectStream { 0 }
+# Check whether the current player can stream HTTPS or not 
+sub canDirectStream {
+	my $self = shift;
+	my ($client) = @_;
+
+	if ( $client->canHTTPS ) {
+		return $self->SUPER::canDirectStream(@_);
+	}
+
+	return 0;
+}
 
 1;

Slim/Player/SqueezePlay.pm

@@ -41,6 +41,7 @@ BEGIN {
 		hasPolarityInversion
 		spDirectHandlers
 		proxyAddress
+		_canHTTPS
 	));
 }
 
@@ -58,6 +59,7 @@ sub new {
 		firmware                => 0,
 		canDecodeRhapsody       => 0,
 		canDecodeRtmp           => 0,
+		_canHTTPS               => 0,
 		hasDigitalOut           => 0,
 		hasPreAmp               => 0,
 		hasDisableDac           => 0,
@@ -86,6 +88,7 @@ my %CapabilitiesMap = (
 	SyncgroupID             => undef,
 	Spdirect                => 'spDirectHandlers',
 	Proxy                   => 'proxyAddress',
+	CanHTTPS                => '_canHTTPS',
 
 	# deprecated
 	model                   => '_model',
@@ -96,6 +99,10 @@ sub model {
 	return shift->_model;
 }
 
+sub canHTTPS {
+	return shift->_canHTTPS;
+}
+
 # This will return the full version + revision, i.e. 7.5.0 r8265
 sub revision {
 	return shift->firmware;