optional fuzzing support

[enigma2.git] / lib / dvb / demux.cpp

diff --git a/lib/dvb/demux.cpp b/lib/dvb/demux.cpp
index 29bbf264c7f6fa71dea0ae40e6a43af7a7db486e..11465186c35a447594e70935560e2275d9b3e5cd 100644 (file)
--- a/lib/dvb/demux.cpp
+++ b/lib/dvb/demux.cpp
@@ -5,6 +5,13 @@
 #include <unistd.h>
 #include <signal.h>
 
+// #define FUZZING 1
+
+#if FUZZING
+               /* change every 1:FUZZING_PROPABILITY byte */
+#define FUZZING_PROPABILITY 100
+#endif
+
 #if HAVE_DVB_API_VERSION < 3
 #include <ost/dmx.h>
 
@@ -178,6 +185,14 @@ void eDVBSectionReader::data(int)
        __u8 data[4096]; // max. section size
        int r;
        r = ::read(fd, data, 4096);
+#if FUZZING
+       int j;
+       for (j = 0; j < r; ++j)
+       {
+               if (!(rand()%FUZZING_PROPABILITY))
+                       data[j] ^= rand();
+       }
+#endif 
        if(r < 0)
        {
                eWarning("ERROR reading section - %m\n");
@@ -206,7 +221,7 @@ eDVBSectionReader::eDVBSectionReader(eDVBDemux *demux, eMainloop *context, RESUL
        
        if (fd >= 0)
        {
-               notifier=new eSocketNotifier(context, fd, eSocketNotifier::Read, false);
+               notifier=eSocketNotifier::create(context, fd, eSocketNotifier::Read, false);
                CONNECT(notifier->activated, eDVBSectionReader::data);
                res = 0;
        } else
@@ -220,8 +235,6 @@ DEFINE_REF(eDVBSectionReader)
 
 eDVBSectionReader::~eDVBSectionReader()
 {
-       if (notifier)
-               delete notifier;
        if (fd >= 0)
                ::close(fd);
 }
@@ -245,11 +258,13 @@ RESULT eDVBSectionReader::start(const eDVBSectionFilterMask &mask)
 #else
        sct.flags   = DMX_IMMEDIATE_START;
 #endif
+#if !FUZZING
        if (mask.flags & eDVBSectionFilterMask::rfCRC)
        {
                sct.flags |= DMX_CHECK_CRC;
                checkcrc = 1;
        } else
+#endif
                checkcrc = 0;
        
        memcpy(sct.filter.filter, mask.data, DMX_FILTER_SIZE);
@@ -331,7 +346,7 @@ eDVBPESReader::eDVBPESReader(eDVBDemux *demux, eMainloop *context, RESULT &res):
        {
                ::ioctl(m_fd, DMX_SET_BUFFER_SIZE, 64*1024);
                ::fcntl(m_fd, F_SETFL, O_NONBLOCK);
-               m_notifier = new eSocketNotifier(context, m_fd, eSocketNotifier::Read, false);
+               m_notifier = eSocketNotifier::create(context, m_fd, eSocketNotifier::Read, false);
                CONNECT(m_notifier->activated, eDVBPESReader::data);
                res = 0;
        } else
@@ -345,8 +360,6 @@ DEFINE_REF(eDVBPESReader)
 
 eDVBPESReader::~eDVBPESReader()
 {
-       if (m_notifier)
-               delete m_notifier;
        if (m_fd >= 0)
                ::close(m_fd);
 }
@@ -406,15 +419,18 @@ class eDVBRecordFileThread: public eFilePushThread
 {
 public:
        eDVBRecordFileThread();
-       void setTimingPID(int pid);
+       void setTimingPID(int pid, int type);
        
-       void saveTimingInformation(const std::string &filename);
+       void startSaveMetaInformation(const std::string &filename);
+       void stopSaveMetaInformation();
+       int getLastPTS(pts_t &pts);
 protected:
        int filterRecordData(const unsigned char *data, int len, size_t &current_span_remaining);
 private:
        eMPEGStreamParserTS m_ts_parser;
        eMPEGStreamInformation m_stream_info;
        off_t m_current_offset;
+       pts_t m_last_pcr; /* very approximate.. */
        int m_pid;
 };
 
@@ -424,14 +440,24 @@ eDVBRecordFileThread::eDVBRecordFileThread()
        m_current_offset = 0;
 }
 
-void eDVBRecordFileThread::setTimingPID(int pid)
+void eDVBRecordFileThread::setTimingPID(int pid, int type)
+{
+       m_ts_parser.setPid(pid, type);
+}
+
+void eDVBRecordFileThread::startSaveMetaInformation(const std::string &filename)
+{
+       m_stream_info.startSave(filename.c_str());
+}
+
+void eDVBRecordFileThread::stopSaveMetaInformation()
 {
-       m_ts_parser.setPid(pid);
+       m_stream_info.stopSave();
 }
 
-void eDVBRecordFileThread::saveTimingInformation(const std::string &filename)
+int eDVBRecordFileThread::getLastPTS(pts_t &pts)
 {
-       m_stream_info.save(filename.c_str());
+       return m_ts_parser.getLastPTS(pts);
 }
 
 int eDVBRecordFileThread::filterRecordData(const unsigned char *data, int len, size_t &current_span_remaining)
@@ -517,6 +543,9 @@ RESULT eDVBTSRecorder::start()
        ::ioctl(m_source_fd, DMX_START);
        
 #endif
+
+       if (m_target_filename != "")
+               m_thread->startSaveMetaInformation(m_target_filename);
        
        m_thread->start(m_source_fd, m_target_fd);
        m_running = 1;
@@ -550,11 +579,11 @@ RESULT eDVBTSRecorder::removePID(int pid)
        return 0;
 }
 
-RESULT eDVBTSRecorder::setTimingPID(int pid)
+RESULT eDVBTSRecorder::setTimingPID(int pid, int type)
 {
        if (m_running)
                return -1;
-       m_thread->setTimingPID(pid);
+       m_thread->setTimingPID(pid, type);
        return 0;
 }
 
@@ -587,12 +616,23 @@ RESULT eDVBTSRecorder::stop()
        close(m_source_fd);
        m_source_fd = -1;
        
-       if (m_target_filename != "")
-               m_thread->saveTimingInformation(m_target_filename + ".ap");
+       m_thread->stopSaveMetaInformation();
        
        return 0;
 }
 
+RESULT eDVBTSRecorder::getCurrentPCR(pts_t &pcr)
+{
+       if (!m_running)
+               return 0;
+       if (!m_thread)
+               return 0;
+               /* XXX: we need a lock here */
+
+                       /* we don't filter PCR data, so just use the last received PTS, which is not accurate, but better than nothing */
+       return m_thread->getLastPTS(pcr);
+}
+
 RESULT eDVBTSRecorder::connectEvent(const Slot1<void,int> &event, ePtr<eConnection> &conn)
 {
        conn = new eConnection(this, m_event.connect(event));