From e4e7f6e8cec4e5e5c6646902a598fed377aa8cf2 Mon Sep 17 00:00:00 2001
From: Andreas Monzner <andreas.monzner@multimedia-labs.de>
Date: Thu, 17 Jul 2008 21:11:30 +0000
Subject: [PATCH 1/1] add own demux policy for dm8000 which now have 5 demux
 devices one for each tuner and one for playback

---
 lib/dvb/demux.cpp |  4 ++-
 lib/dvb/demux.h   |  3 +-
 lib/dvb/dvb.cpp   | 86 ++++++++++++++++++++++++++++++++++-------------
 3 files changed, 68 insertions(+), 25 deletions(-)

diff --git a/lib/dvb/demux.cpp b/lib/dvb/demux.cpp
index 6a7e50db..29bbf264 100644
--- a/lib/dvb/demux.cpp
+++ b/lib/dvb/demux.cpp
@@ -76,11 +76,12 @@ RESULT eDVBDemux::setSourceFrontend(int fenum)
 {
 #if HAVE_DVB_API_VERSION >= 3
 	int fd = openDemux();
-	
 	int n = DMX_SOURCE_FRONT0 + fenum;
 	int res = ::ioctl(fd, DMX_SET_SOURCE, &n);
 	if (res)
 		eDebug("DMX_SET_SOURCE failed! - %m");
+	else
+		source = fenum;
 	::close(fd);
 	return res;
 #endif
@@ -93,6 +94,7 @@ RESULT eDVBDemux::setSourcePVR(int pvrnum)
 	int fd = openDemux();
 	int n = DMX_SOURCE_DVR0 + pvrnum;
 	int res = ::ioctl(fd, DMX_SET_SOURCE, &n);
+	source = -1;
 	::close(fd);
 	return res;
 #endif
diff --git a/lib/dvb/demux.h b/lib/dvb/demux.h
index 3541974e..1c0da47c 100644
--- a/lib/dvb/demux.h
+++ b/lib/dvb/demux.h
@@ -15,6 +15,7 @@ public:
 	virtual ~eDVBDemux();
 	
 	RESULT setSourceFrontend(int fenum);
+	int getSource() { return source; }
 	RESULT setSourcePVR(int pvrnum);
 	
 	RESULT createSectionReader(eMainloop *context, ePtr<iDVBSectionReader> &reader);
@@ -28,7 +29,7 @@ public:
 	
 	int getRefCount() { return ref; }
 private:
-	int adapter, demux;
+	int adapter, demux, source;
 	
 	int m_dvr_busy;
 	friend class eDVBSectionReader;
diff --git a/lib/dvb/dvb.cpp b/lib/dvb/dvb.cpp
index 23a9d5a9..11902507 100644
--- a/lib/dvb/dvb.cpp
+++ b/lib/dvb/dvb.cpp
@@ -374,40 +374,80 @@ RESULT eDVBResourceManager::allocateDemux(eDVBRegisteredFrontend *fe, ePtr<eDVBA
 
 	eDebug("allocate demux");
 	eSmartPtrList<eDVBRegisteredDemux>::iterator i(m_demux.begin());
-	
+
+	int n=0;
+
 	if (i == m_demux.end())
 		return -1;
-		
-	int n=0;
-		/* FIXME: hardware demux policy */
-	if (!(cap & iDVBChannel::capDecode))
+	
+	ePtr<eDVBRegisteredDemux> unused;
+	
+	if (m_demux.length() < 5)
 	{
-		if (m_demux.size() > 2)  /* assumed to be true, otherwise we have lost anyway */
+		/* FIXME: hardware demux policy */
+		if (!(cap & iDVBChannel::capDecode))
 		{
-			++i, ++n;
-			++i, ++n;
+			if (m_demux.size() > 2)  /* assumed to be true, otherwise we have lost anyway */
+			{
+				++i, ++n;
+				++i, ++n;
+			}
 		}
-	}
-	
-	for (; i != m_demux.end(); ++i, ++n)
-	{
-		int is_decode = n < 2;
+
+		for (; i != m_demux.end(); ++i, ++n)
+		{
+			int is_decode = n < 2;
 		
-		int in_use = is_decode ? (i->m_demux->getRefCount() != 2) : i->m_inuse;
+			int in_use = is_decode ? (i->m_demux->getRefCount() != 2) : i->m_inuse;
 		
-		if ((!in_use) && ((!fe) || (i->m_adapter == fe->m_adapter)))
+			if ((!in_use) && ((!fe) || (i->m_adapter == fe->m_adapter)))
+			{
+				if ((cap & iDVBChannel::capDecode) && !is_decode)
+					continue;
+				unused = i;	
+				break;
+			}
+		}
+	}
+	else // we asume dm8000
+	{
+		for (; i != m_demux.end(); ++i, ++n)
 		{
-			if ((cap & iDVBChannel::capDecode) && !is_decode)
-				continue;
-			
-			demux = new eDVBAllocatedDemux(i);
 			if (fe)
-				demux->get().setSourceFrontend(fe->m_frontend->getDVBID());
-			else
-				demux->get().setSourcePVR(0);
-			return 0;
+			{
+				if (!i->m_inuse)
+				{
+					if (!unused)
+						unused = i;
+				}
+				else if (i->m_adapter == fe->m_adapter && 
+				    i->m_demux->getSource() == fe->m_frontend->getDVBID())
+				{
+					demux = new eDVBAllocatedDemux(i);
+					return 0;
+				}
+			}
+			else if (n == 4) // always use demux4 for PVR (demux 4 can not descramble...)
+			{
+				if (i->m_inuse) {
+					demux = new eDVBAllocatedDemux(i);
+					return 0;
+				}
+				unused = i;
+			}
 		}
 	}
+
+	if (unused)
+	{
+		demux = new eDVBAllocatedDemux(unused);
+		if (fe)
+			demux->get().setSourceFrontend(fe->m_frontend->getDVBID());
+		else
+			demux->get().setSourcePVR(0);
+		return 0;
+	}
+
 	eDebug("demux not found");
 	return -1;
 }
-- 
2.30.2