- add ts recorder
[enigma2.git] / lib / dvb / demux.cpp
index f24fcdd..f6bdbd7 100644 (file)
@@ -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;
+}