From 7fd4f3d49a6d2f93cae4769cf8678358ebd1abce Mon Sep 17 00:00:00 2001
From: Felix Domke <tmbinc@elitedvb.net>
Date: Sat, 30 Apr 2005 17:59:17 +0000
Subject: [PATCH]  - add ts recorder  - rename: isection.h -> idemux.h

---
 lib/dvb/demux.cpp  | 258 +++++++++++++++++++++++++++++++++++++++++++++
 lib/dvb/demux.h    |  41 ++++++-
 lib/dvb/eit.h      |   2 +-
 lib/dvb/esection.h |   2 +-
 lib/dvb/pmt.cpp    |   2 +
 lib/dvb/pmt.h      |   2 +-
 lib/dvb/scan.h     |   2 +-
 lib/dvb/specs.h    |   2 +-
 8 files changed, 305 insertions(+), 6 deletions(-)

diff --git a/lib/dvb/demux.cpp b/lib/dvb/demux.cpp
index f24fcddc..f6bdbd7b 100644
--- a/lib/dvb/demux.cpp
+++ b/lib/dvb/demux.cpp
@@ -4,6 +4,9 @@
 #include <sys/ioctl.h>
 #include <errno.h>
 #include <unistd.h>
+#include <signal.h>
+
+#include <lib/base/thread.h>
 
 #if HAVE_DVB_API_VERSION < 3
 #include <ost/dmx.h>
@@ -24,6 +27,7 @@
 
 eDVBDemux::eDVBDemux(int adapter, int demux): adapter(adapter), demux(demux)
 {
+	m_dvr_busy = 0;
 }
 
 eDVBDemux::~eDVBDemux()
@@ -41,6 +45,14 @@ RESULT eDVBDemux::createSectionReader(eMainloop *context, ePtr<iDVBSectionReader
 	return res;
 }
 
+RESULT eDVBDemux::createTSRecorder(ePtr<iDVBTSRecorder> &recorder)
+{
+	if (m_dvr_busy)
+		return -EBUSY;
+	recorder = new eDVBTSRecorder(this);
+	return 0;
+}
+
 RESULT eDVBDemux::getMPEGDecoder(ePtr<iTSMPEGDecoder> &decoder)
 {
 	decoder = new eTSMPEGDecoder(this, 0);
@@ -165,3 +177,249 @@ RESULT eDVBSectionReader::connectRead(const Slot1<void,const __u8*> &r, ePtr<eCo
 	conn = new eConnection(this, read.connect(r));
 	return 0;
 }
+
+DEFINE_REF(eDVBTSRecorder);
+
+class eDVBTSRecorderThread: public eThread
+{
+public:
+	eDVBTSRecorderThread();
+	void thread();
+	void stop();
+	void start(int sourcefd, int destfd);
+private:
+	int m_stop;
+	unsigned char m_buffer[65536];
+	int m_buf_start, m_buf_end;
+	int m_fd_source, m_fd_dest;
+};
+
+eDVBTSRecorderThread::eDVBTSRecorderThread()
+{
+	m_stop = 0;
+	m_buf_start = m_buf_end = 0;
+}
+
+static void signal_handler(int x)
+{
+}
+
+void eDVBTSRecorderThread::thread()
+{
+	eDebug("RECORDING THREAD START");
+		// this is race. FIXME.
+	
+		/* we set the signal to not restart syscalls, so we can detect our signal. */
+	struct sigaction act;
+	act.sa_handler = signal_handler; // no, SIG_IGN doesn't do it :/
+	act.sa_flags = 0;
+	sigaction(SIGUSR1, &act, 0);
+	
+		/* m_stop must be evaluated after each syscall. */
+	while (!m_stop)
+	{
+			/* first try flushing the bufptr */
+		if (m_buf_start != m_buf_end)
+		{
+				// TODO: take care of boundaries.
+			int w = write(m_fd_dest, m_buffer + m_buf_start, m_buf_end - m_buf_start);
+			if (w <= 0)
+			{
+				if (errno == -EINTR)
+					continue;
+				eDebug("eDVBTSRecorder *write error* - not yet handled");
+				// ... we would stop the thread
+			}
+			printf("TSRECORD: wrote %d bytes\n", w);
+			m_buf_start += w;
+			continue;
+		}
+			
+			/* now fill our buffer. */
+		m_buf_start = 0;
+		m_buf_end = read(m_fd_source, m_buffer, sizeof(m_buffer));
+		if (m_buf_end < 0)
+		{
+			m_buf_end = 0;
+			if (errno == EINTR)
+				continue;
+			eDebug("eDVBTSRecorder *read error* - not yet handled");
+		}
+		printf("TSRECORD: read %d bytes\n", m_buf_end);
+	}
+	
+	eDebug("RECORDING THREAD STOP");
+}
+
+void eDVBTSRecorderThread::start(int fd_source, int fd_dest)
+{
+	m_fd_source = fd_source;
+	m_fd_dest = fd_dest;
+	m_stop = 0;
+	run();
+}
+
+void eDVBTSRecorderThread::stop()
+{
+	m_stop = 1;
+	sendSignal(SIGUSR1);
+	kill();
+}
+
+eDVBTSRecorder::eDVBTSRecorder(eDVBDemux *demux): m_demux(demux)
+{
+	m_running = 0;
+	m_format = 0;
+	m_target_fd = -1;
+	m_thread = new eDVBTSRecorderThread();
+	m_demux->m_dvr_busy = 1;
+}
+
+eDVBTSRecorder::~eDVBTSRecorder()
+{
+	stop();
+	delete m_thread;
+	m_demux->m_dvr_busy = 0;
+}
+
+RESULT eDVBTSRecorder::start()
+{
+	if (m_running)
+		return -1;
+	
+	if (m_target_fd == -1)
+		return -2;
+		
+	char filename[128];
+#if HAVE_DVB_API_VERSION < 3
+	snprintf(filename, 128, "/dev/dvb/card%d/dvr%d", m_demux->adapter, m_demux->demux);
+#else
+	snprintf(filename, 128, "/dev/dvb/adapter%d/dvr%d", m_demux->adapter, m_demux->demux);
+#endif
+	m_source_fd = ::open(filename, O_RDONLY);
+	
+	if (m_source_fd < 0)
+	{
+		eDebug("FAILED to open dvr (%s) in ts recoder (%m)", filename);
+		return -3;
+	}
+	
+	m_thread->start(m_source_fd, m_target_fd);
+	m_running = 1;
+	
+	for (std::map<int,int>::iterator i(m_pids.begin()); i != m_pids.end(); ++i)
+		startPID(i->first);
+	
+	return 0;
+}
+
+RESULT eDVBTSRecorder::addPID(int pid)
+{
+	if (m_pids.find(pid) != m_pids.end())
+		return -1;
+	
+	m_pids.insert(std::pair<int,int>(pid, -1));
+	if (m_running)
+		startPID(pid);
+	return 0;
+}
+
+RESULT eDVBTSRecorder::removePID(int pid)
+{
+	if (m_pids.find(pid) == m_pids.end())
+		return -1;
+		
+	if (m_running)
+		stopPID(pid);
+	
+	m_pids.erase(pid);
+	return 0;
+}
+
+RESULT eDVBTSRecorder::setFormat(int format)
+{
+	if (m_running)
+		return -1;
+	m_format = format;
+	return 0;
+}
+
+RESULT eDVBTSRecorder::setTargetFD(int fd)
+{
+	m_target_fd = fd;
+	return 0;
+}
+
+RESULT eDVBTSRecorder::setBoundary(off_t max)
+{
+	return -1; // not yet implemented
+}
+
+RESULT eDVBTSRecorder::stop()
+{
+	for (std::map<int,int>::iterator i(m_pids.begin()); i != m_pids.end(); ++i)
+		stopPID(i->first);
+
+	if (!m_running)
+		return -1;
+	m_thread->stop();
+	
+	close(m_source_fd);
+	
+	return 0;
+}
+
+RESULT eDVBTSRecorder::connectEvent(const Slot1<void,int> &event, ePtr<eConnection> &conn)
+{
+	conn = new eConnection(this, m_event.connect(event));
+	return 0;
+}
+
+RESULT eDVBTSRecorder::startPID(int pid)
+{
+	char filename[128];
+#if HAVE_DVB_API_VERSION < 3
+	snprintf(filename, 128, "/dev/dvb/card%d/demux%d", m_demux->adapter, m_demux->demux);
+#else
+	snprintf(filename, 128, "/dev/dvb/adapter%d/demux%d", m_demux->adapter, m_demux->demux);
+#endif
+	int fd = ::open(filename, O_RDWR);
+	if (fd < 0)
+	{
+		eDebug("FAILED to open demux (%s) in ts recoder (%m)", filename);
+		return -1;
+	}
+
+#if HAVE_DVB_API_VERSION < 3
+	dmxPesFilterParams flt;
+	
+	flt.pesType = DMX_PES_OTHER;
+#else
+	dmx_pes_filter_params flt;
+	
+	flt.pes_type = DMX_PES_OTHER;
+#endif
+
+	flt.pid     = pid;
+	flt.input   = DMX_IN_FRONTEND;
+	flt.output  = DMX_OUT_TS_TAP;
+	
+	flt.flags   = DMX_IMMEDIATE_START;
+
+	int res = ::ioctl(fd, DMX_SET_PES_FILTER, &flt);
+	if (res < 0)
+	{
+		eDebug("set pes filter failed!");
+		::close(fd);
+		return -1;
+	}
+	m_pids[pid] = fd;
+
+	return 0;
+}
+
+void eDVBTSRecorder::stopPID(int pid)
+{
+	::close(m_pids[pid]);
+	m_pids[pid] = -1;
+}
diff --git a/lib/dvb/demux.h b/lib/dvb/demux.h
index d8c1078e..b2d571ac 100644
--- a/lib/dvb/demux.h
+++ b/lib/dvb/demux.h
@@ -2,19 +2,23 @@
 #define __dvb_demux_h
 
 #include <lib/dvb/idvb.h>
-#include <lib/dvb/isection.h>
+#include <lib/dvb/idemux.h>
 
 class eDVBDemux: public iDVBDemux
 {
 	int adapter, demux;
+	
+	int m_dvr_busy;
 	friend class eDVBSectionReader;
 	friend class eDVBAudio;
 	friend class eDVBVideo;
+	friend class eDVBTSRecorder;
 public:
 	DECLARE_REF(eDVBDemux);
 	eDVBDemux(int adapter, int demux);
 	virtual ~eDVBDemux();
 	RESULT createSectionReader(eMainloop *context, ePtr<iDVBSectionReader> &reader);
+	RESULT createTSRecorder(ePtr<iDVBTSRecorder> &recorder);
 	RESULT getMPEGDecoder(ePtr<iTSMPEGDecoder> &reader);
 };
 
@@ -38,4 +42,39 @@ public:
 	RESULT connectRead(const Slot1<void,const __u8*> &read, ePtr<eConnection> &conn);
 };
 
+class eDVBTSRecorderThread;
+
+class eDVBTSRecorder: public iDVBTSRecorder, public Object
+{
+	DECLARE_REF(eDVBTSRecorder);
+public:
+	eDVBTSRecorder(eDVBDemux *demux);
+	~eDVBTSRecorder();
+
+	RESULT start();
+	RESULT addPID(int pid);
+	RESULT removePID(int pid);
+	
+	RESULT setFormat(int pid);
+	
+	RESULT setTargetFD(int fd);
+	RESULT setBoundary(off_t max);
+	
+	RESULT stop();
+	
+	RESULT connectEvent(const Slot1<void,int> &event, ePtr<eConnection> &conn);
+private:
+	RESULT startPID(int pid);
+	void stopPID(int pid);
+	
+	eDVBTSRecorderThread *m_thread;
+	
+	std::map<int,int> m_pids;
+	Signal1<void,int> m_event;
+	
+	ePtr<eDVBDemux> m_demux;
+	
+	int m_running, m_format, m_target_fd, m_source_fd;
+};
+
 #endif
diff --git a/lib/dvb/eit.h b/lib/dvb/eit.h
index 7ec16bc8..a026773c 100644
--- a/lib/dvb/eit.h
+++ b/lib/dvb/eit.h
@@ -1,7 +1,7 @@
 #ifndef __lib_dvb_eit_h
 #define __lib_dvb_eit_h
 
-#include <lib/dvb/isection.h>
+#include <lib/dvb/idemux.h>
 #include <lib/dvb/esection.h>
 #include <lib/dvb_si/eit.h>
 #include <lib/service/event.h>
diff --git a/lib/dvb/esection.h b/lib/dvb/esection.h
index df0b93e5..2d71eef8 100644
--- a/lib/dvb/esection.h
+++ b/lib/dvb/esection.h
@@ -1,7 +1,7 @@
 #ifndef __esection_h
 #define __esection_h
 
-#include <lib/dvb/isection.h>
+#include <lib/dvb/idemux.h>
 #include <set>
 
 class eGTable: public iObject, public Object
diff --git a/lib/dvb/pmt.cpp b/lib/dvb/pmt.cpp
index 8c4388a4..3f9ac7f7 100644
--- a/lib/dvb/pmt.cpp
+++ b/lib/dvb/pmt.cpp
@@ -44,6 +44,7 @@ void eDVBServicePMTHandler::PMTready(int error)
 
 void eDVBServicePMTHandler::PATready(int)
 {
+	eDebug("got PAT");
 	ePtr<eTable<ProgramAssociationTable> > ptr;
 	if (!m_PAT.getCurrent(ptr))
 	{
@@ -67,6 +68,7 @@ void eDVBServicePMTHandler::PATready(int)
 
 int eDVBServicePMTHandler::getProgramInfo(struct program &program)
 {
+	eDebug("got PMT");
 	ePtr<eTable<ProgramMapTable> > ptr;
 	
 	program.videoStreams.clear();
diff --git a/lib/dvb/pmt.h b/lib/dvb/pmt.h
index 03df198b..136c1673 100644
--- a/lib/dvb/pmt.h
+++ b/lib/dvb/pmt.h
@@ -3,7 +3,7 @@
 
 #include <lib/dvb/idvb.h>
 #include <lib/dvb/dvb.h>
-#include <lib/dvb/isection.h>
+#include <lib/dvb/idemux.h>
 #include <lib/dvb/esection.h>
 #include <lib/dvb_si/pmt.h>
 #include <lib/dvb_si/pat.h>
diff --git a/lib/dvb/scan.h b/lib/dvb/scan.h
index 2f75291b..bfd3add9 100644
--- a/lib/dvb/scan.h
+++ b/lib/dvb/scan.h
@@ -4,7 +4,7 @@
 #include <lib/dvb_si/nit.h>
 #include <lib/dvb_si/sdt.h>
 #include <lib/dvb_si/bat.h>
-#include <lib/dvb/isection.h>
+#include <lib/dvb/idemux.h>
 #include <lib/dvb/esection.h>
 #include <lib/dvb/db.h>
 
diff --git a/lib/dvb/specs.h b/lib/dvb/specs.h
index 1a0353e5..5c26bfad 100644
--- a/lib/dvb/specs.h
+++ b/lib/dvb/specs.h
@@ -2,7 +2,7 @@
 #define __lib_dvb_specs_h
 
 #include <lib/dvb/idvb.h>
-#include <lib/dvb/isection.h>
+#include <lib/dvb/idemux.h>
 #include <lib/dvb_si/pmt.h>
 #include <lib/dvb_si/sdt.h>
 #include <lib/dvb_si/nit.h>
-- 
2.30.2