add needed functions

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

diff --git a/lib/dvb/tstools.cpp b/lib/dvb/tstools.cpp
index b83fd50aa6de36b0a006c1e38c10ea8beede13cf..20eb3ce62c076815c703ec1f6c41bb4329c8a036 100644 (file)
--- a/lib/dvb/tstools.cpp
+++ b/lib/dvb/tstools.cpp
@@ -10,7 +10,7 @@ eDVBTSTools::eDVBTSTools()
 {
        m_fd = -1;
        m_pid = -1;
-       m_maxrange = 1*1024*1024;
+       m_maxrange = 256*1024;
        
        m_begin_valid = 0;
        m_end_valid = 0;
@@ -71,8 +71,11 @@ int eDVBTSTools::getPTS(off_t &offset, pts_t &pts)
                {
                        int i = 0;
                        while (i < 188)
+                       {
                                if (block[i] == 0x47)
                                        break;
+                               ++i;
+                       }
                        offset = lseek(m_fd, i - 188, SEEK_CUR);
                        continue;
                }
@@ -92,7 +95,7 @@ int eDVBTSTools::getPTS(off_t &offset, pts_t &pts)
                unsigned char *pes;
                
                        /* check for adaption field */
-               if (block[3] & 0x10)
+               if (block[3] & 0x20)
                        pes = block + block[4] + 4 + 1;
                else
                        pes = block + 4;
@@ -112,7 +115,7 @@ int eDVBTSTools::getPTS(off_t &offset, pts_t &pts)
                        return 0;
                }
        }
-
+       
        return -1;
 }
 
@@ -120,6 +123,7 @@ void eDVBTSTools::calcBegin()
 {
        if (m_fd < 0)   
                return;
+
        if (!m_begin_valid)
        {
                m_offset_begin = 0;
@@ -133,11 +137,22 @@ void eDVBTSTools::calcEnd()
        if (m_fd < 0)   
                return;
        
-       if (!m_end_valid)
+       m_offset_end = lseek(m_fd, 0, SEEK_END);
+       
+       int maxiter = 10;
+       
+       while (!m_end_valid)
        {
-               m_offset_end = lseek(m_fd, 0, SEEK_END) - m_maxrange;
+               if (!--maxiter)
+                       return;
+               
+               m_offset_end -= m_maxrange;
+               if (m_offset_end < 0)
+                       m_offset_end = 0;
                if (!getPTS(m_offset_end, m_pts_end))
                        m_end_valid = 1;
+               if (!m_offset_end)
+                       return;
        }
 }