Added streamdev-client support for upcoming streamdev-server versions

with purely priority driven precedence.

HISTORY

@@ -1,6 +1,8 @@
 VDR Plugin 'streamdev' Revision History
 ---------------------------------------
  
+- Added streamdev-client support for upcoming streamdev-server versions
+  with purely priority driven precedence.
 - API change of VDR 1.7.26: "avoid device" is no longer available
 - Fixed ProvidesChannel() on client always returning true since the new timeout
   option has been added.

client/device.c

@@ -19,6 +19,14 @@
 
 using namespace std;
 
+#ifndef LIVEPRIORITY
+#define LIVEPRIORITY 0
+#endif
+
+#ifndef TRANSFERPRIORITY
+#define TRANSFERPRIORITY -1
+#endif
+
 #define VIDEOBUFSIZE MEGABYTE(3)
 
 cStreamdevDevice *cStreamdevDevice::m_Device = NULL;
@@ -89,7 +97,11 @@ bool cStreamdevDevice::IsTunedToTransponder(const cChannel *Channel)
 bool cStreamdevDevice::ProvidesChannel(const cChannel *Channel, int Priority, 
 		bool *NeedsDetachReceivers) const {
 	bool res = false;
+#if APIVERSNUM >= 10725
+	bool prio = Priority == IDLEPRIORITY || Priority >= this->Priority();
+#else
 	bool prio = Priority < 0 || Priority > this->Priority();
+#endif
 	bool ndr = false;
 
 	if (!StreamdevClientSetup.StartClient || Channel == m_DenyChannel)
@@ -114,7 +126,24 @@ bool cStreamdevDevice::ProvidesChannel(const cChannel *Channel, int Priority,
 			&& TRANSPONDER(Channel, m_Channel))
 		res = true;
 	else {
+		if (Priority == LIVEPRIORITY)
+		{
+			if (ClientSocket.ServerVersion() >= 100)
+			{
+				Priority = StreamdevClientSetup.LivePriority;
+				UpdatePriority(true);
+			}
+			else
+			{
+				if (StreamdevClientSetup.LivePriority >= 0)
+					Priority = StreamdevClientSetup.LivePriority;
+			}
+		}
+
 		res = prio && ClientSocket.ProvidesChannel(Channel, Priority);
+
+		if (ClientSocket.ServerVersion() >= 100)
+			UpdatePriority(false);
 		ndr = true;
 	}
 
@@ -316,14 +345,21 @@ bool cStreamdevDevice::ReInit(void) {
 	return StreamdevClientSetup.StartClient ? Init() : true;
 }
 
-void cStreamdevDevice::UpdatePriority(void) {
+void cStreamdevDevice::UpdatePriority(bool SwitchingChannels) {
 	if (m_Device) {
 		m_Device->Lock();
 		if (m_Device->m_UpdatePriority && ClientSocket.DataSocket(siLive)) {
 			int Priority = m_Device->Priority();
 			// override TRANSFERPRIORITY (-1) with live TV priority from setup
-			if (m_Device == cDevice::ActualDevice() && Priority == -1)
+			if (m_Device == cDevice::ActualDevice() && Priority == TRANSFERPRIORITY) {
 				Priority = StreamdevClientSetup.LivePriority;
+				// temporarily lower priority
+				if (SwitchingChannels)
+					Priority--;
+				if (Priority < 0 && ClientSocket.ServerVersion() < 100)
+					Priority = 0;
+
+			}
 			if (m_Device->m_Priority != Priority && ClientSocket.SetPriority(Priority))
 				m_Device->m_Priority = Priority;
 		}

client/device.h

@@ -70,7 +70,7 @@ public:
 	virtual int SignalStrength(void) const;
 	virtual int SignalQuality(void) const;
 
-	static void UpdatePriority(void);
+	static void UpdatePriority(bool SwitchingChannels = false);
 	static void DenyChannel(const cChannel *Channel) { m_DenyChannel = Channel; }
 	static bool Init(void);
 	static bool ReInit(void);

client/setup.c

@@ -7,6 +7,10 @@
 #include "client/setup.h"
 #include "client/device.h"
 
+#ifndef MINPRIORITY
+#define MINPRIORITY -MAXPRIORITY
+#endif
+
 cStreamdevClientSetup StreamdevClientSetup;
 
 cStreamdevClientSetup::cStreamdevClientSetup(void) {
@@ -16,7 +20,7 @@ cStreamdevClientSetup::cStreamdevClientSetup(void) {
 	StreamFilters = false;
 	HideMenuEntry = false;
 	LivePriority  = 0;
-	MinPriority   = -MAXPRIORITY;
+	MinPriority   = MINPRIORITY;
 	MaxPriority   = MAXPRIORITY;
 #if APIVERSNUM >= 10700
 	NumProvidedSystems = 1;
@@ -55,9 +59,9 @@ cStreamdevClientMenuSetupPage::cStreamdevClientMenuSetupPage(void) {
 	Add(new cMenuEditIntItem (tr("Remote Port"),         &m_NewSetup.RemotePort, 0, 65535));
 	Add(new cMenuEditIntItem (tr("Timeout (s)"),         &m_NewSetup.Timeout, 1, 15));
 	Add(new cMenuEditBoolItem(tr("Filter Streaming"),    &m_NewSetup.StreamFilters));
-	Add(new cMenuEditIntItem (tr("Live TV Priority"),    &m_NewSetup.LivePriority, 0, MAXPRIORITY));
+	Add(new cMenuEditIntItem (tr("Live TV Priority"),    &m_NewSetup.LivePriority, MINPRIORITY, MAXPRIORITY));
-	Add(new cMenuEditIntItem (tr("Minimum Priority"),    &m_NewSetup.MinPriority, -MAXPRIORITY, MAXPRIORITY));
+	Add(new cMenuEditIntItem (tr("Minimum Priority"),    &m_NewSetup.MinPriority, MINPRIORITY, MAXPRIORITY));
-	Add(new cMenuEditIntItem (tr("Maximum Priority"),    &m_NewSetup.MaxPriority, -MAXPRIORITY, MAXPRIORITY));
+	Add(new cMenuEditIntItem (tr("Maximum Priority"),    &m_NewSetup.MaxPriority, MINPRIORITY, MAXPRIORITY));
 #if APIVERSNUM >= 10715
 	Add(new cMenuEditIntItem (tr("Broadcast Systems / Cost"),  &m_NewSetup.NumProvidedSystems, 1, 15));
 #elif APIVERSNUM >= 10700

client/socket.c

@@ -23,6 +23,7 @@ cClientSocket ClientSocket;
 cClientSocket::cClientSocket(void) 
 {
 	memset(m_DataSockets, 0, sizeof(cTBSocket*) * si_Count);
+	m_ServerVersion = 0;
 	m_Prio = false;
 	m_Abort = false;
 	m_LastSignalUpdate = 0;
@@ -153,23 +154,38 @@ bool cClientSocket::CheckConnection(void) {
 		return false;
 	}
 
-	if (!Command("CAPS TSPIDS", 220)) {
+	unsigned int major, minor;
-		Close();
+	if (sscanf(buffer.c_str(), "%*u VTP/%u.%u", &major, &minor) == 2)
-		return false;
+		m_ServerVersion = major * 100 + minor;
+
+	if (m_ServerVersion == 0) {
+		if (!Command("CAPS TSPIDS", 220)) {
+			Close();
+			return false;
+		}
+
+		const char *Filters = "";
+		if(Command("CAPS FILTERS", 220))
+			Filters = ",FILTERS";
+
+		const char *Prio = "";
+		if(Command("CAPS PRIO", 220)) {
+			Prio = ",PRIO";
+			m_Prio = true;
+		}
+		isyslog("streamdev-client: Connected to server %s:%d using capabilities TSPIDS%s%s",
+				RemoteIp().c_str(), RemotePort(), Filters, Prio);
 	}
-
+	else {
-	const char *Filters = "";
+		if(!Command("VERS 1.0", 220)) {
-	if(Command("CAPS FILTERS", 220))
+			Close();
-		Filters = ",FILTERS";
+			return false;
-
+		}
-	const char *Prio = "";
-	if(Command("CAPS PRIO", 220)) {
-		Prio = ",PRIO";
 		m_Prio = true;
+		isyslog("streamdev-client: Connected to server %s:%d using protocol version %u.%u",
+				RemoteIp().c_str(), RemotePort(), major, minor);
 	}
 
-	isyslog("streamdev-client: Connected to server %s:%d using capabilities TSPIDS%s%s",
-	        RemoteIp().c_str(), RemotePort(), Filters, Prio);
 	return true;
 }
 

client/socket.h

@@ -21,6 +21,7 @@ private:
 	cTBSocket    *m_DataSockets[si_Count];
 	cMutex        m_Mutex;
 	char          m_Buffer[BUFSIZ + 1]; // various uses
+	unsigned int  m_ServerVersion;
 	bool          m_Prio; // server supports command PRIO
 	bool          m_Abort; // quit command pending
 
@@ -52,6 +53,7 @@ public:
 	bool CloseDataConnection(eSocketId Id);
 	bool SetChannelDevice(const cChannel *Channel);
 	bool SupportsPrio() { return m_Prio; }
+	unsigned int ServerVersion() { return m_ServerVersion; }
 	bool SetPriority(int Priority);
 	bool SetPid(int Pid, bool On);
 	bool SetFilter(ushort Pid, uchar Tid, uchar Mask, bool On);