m_use_streaminfo = 0;
m_samples_taken = 0;
+
+ m_last_filelength = 0;
+
+ m_futile = 0;
}
eDVBTSTools::~eDVBTSTools()
m_use_streaminfo = 1;
else
{
- eDebug("no recorded stream information available");
+// eDebug("no recorded stream information available");
m_use_streaminfo = 0;
}
m_samples_taken = 0;
- if (m_file.open(filename) < 0)
+ if (m_file.open(filename, 1) < 0)
return -1;
return 0;
}
if (m_use_streaminfo)
return m_streaminfo.getPTS(offset, pts);
- if (!m_file.valid() < 0)
+ if (!m_file.valid())
return -1;
offset -= offset % 188;
if (!m_samples_taken)
takeSamples();
- if (m_samples.empty())
- return -1;
-
+ if (!m_samples.empty())
+ {
// eDebug("ok, samples ok");
- /* search entry before and after */
- std::map<pts_t, off_t>::const_iterator l = m_samples.lower_bound(pts);
- std::map<pts_t, off_t>::const_iterator u = l;
+ /* search entry before and after */
+ std::map<pts_t, off_t>::const_iterator l = m_samples.lower_bound(pts);
+ std::map<pts_t, off_t>::const_iterator u = l;
- if (l != m_samples.begin())
- --l;
+ if (l != m_samples.begin())
+ --l;
- int birate;
- if ((u == m_samples.end()) || (l == m_samples.end()))
- return -1;
-
- pts_t pts_diff = u->first - l->first;
- off_t offset_diff = u->second - l->second;
+ if ((u != m_samples.end()) && (l != m_samples.end()))
+ {
+ pts_t pts_diff = u->first - l->first;
+ off_t offset_diff = u->second - l->second;
// eDebug("using: %llx:%llx -> %llx:%llx", l->first, u->first, l->second, u->second);
- if (!pts_diff)
- return -1;
-
- int bitrate = calcBitrate(); /* in bits/s */
- bitrate = offset_diff * 90000 * 8 / pts_diff;
-
- if (bitrate <= 0)
- return -1;
+ if (pts_diff)
+ {
+ int bitrate = offset_diff * 90000 * 8 / pts_diff;
+ if (bitrate > 0)
+ {
+ offset = l->second;
+ offset += ((pts - l->first) * (pts_t)bitrate) / 8ULL / 90000ULL;
+ offset -= offset % 188;
+ return 0;
+ }
+ }
+ }
+ }
- offset = l->second;
- offset += ((pts - l->first) * (pts_t)bitrate) / 8ULL / 90000ULL;
+ eDebug("falling back");
+ int bitrate = calcBitrate();
+ offset = pts * (pts_t)bitrate / 8ULL / 90000ULL;
offset -= offset % 188;
return 0;
if (!m_file.valid())
return;
- if (!m_begin_valid)
+ if (!(m_begin_valid || m_futile))
{
m_offset_begin = 0;
if (!getPTS(m_offset_begin, m_pts_begin))
m_begin_valid = 1;
+ else
+ m_futile = 1;
}
}
off_t end = m_file.lseek(0, SEEK_END);
- if (abs(end - m_offset_end) > 1*1024*1024)
+ if (abs(end - m_last_filelength) > 1*1024*1024)
{
- m_offset_end = end;
+ m_last_filelength = end;
m_end_valid = 0;
- eDebug("file size changed, recalc length");
+
+ m_futile = 0;
+// eDebug("file size changed, recalc length");
}
int maxiter = 10;
- while (!m_end_valid)
+ m_offset_end = m_last_filelength;
+
+ while (!(m_end_valid || m_futile))
{
if (!--maxiter)
+ {
+ m_futile = 1;
return;
-
+ }
+
m_offset_end -= m_maxrange;
if (m_offset_end < 0)
m_offset_end = 0;
+
+ /* restore offset if getpts fails */
+ off_t off = m_offset_end;
+
if (!getPTS(m_offset_end, m_pts_end))
m_end_valid = 1;
+ else
+ m_offset_end = off;
+
if (!m_offset_end)
- return;
+ {
+ m_futile = 1;
+ break;
+ }
}
}
int nr_samples = 30;
off_t bytes_per_sample = (m_offset_end - m_offset_begin) / (long long)nr_samples;
- if (bytes_per_sample < 1*1024*1024)
- bytes_per_sample = 1*1024*1024;
+ if (bytes_per_sample < 40*1024*1024)
+ bytes_per_sample = 40*1024*1024;
bytes_per_sample -= bytes_per_sample % 188;
m_samples[m_pts_end] = m_offset_end;
// eDebug("begin, end: %llx %llx", m_offset_begin, m_offset_end);
}
+
+int eDVBTSTools::findPMT(int &pmt_pid, int &service_id)
+{
+ /* FIXME: this will be factored out soon! */
+ if (!m_file.valid())
+ {
+ eDebug(" file not valid");
+ return -1;
+ }
+
+ if (m_file.lseek(0, SEEK_SET) < 0)
+ {
+ eDebug("seek failed");
+ return -1;
+ }
+
+ int left = 5*1024*1024;
+
+ while (left >= 188)
+ {
+ unsigned char block[188];
+ if (m_file.read(block, 188) != 188)
+ {
+ eDebug("read error");
+ break;
+ }
+ left -= 188;
+
+ if (block[0] != 0x47)
+ {
+ int i = 0;
+ while (i < 188)
+ {
+ if (block[i] == 0x47)
+ break;
+ ++i;
+ }
+ m_file.lseek(i - 188, SEEK_CUR);
+ continue;
+ }
+
+ int pid = ((block[1] << 8) | block[2]) & 0x1FFF;
+
+ int pusi = !!(block[1] & 0x40);
+
+ if (!pusi)
+ continue;
+
+ /* ok, now we have a PES header or section header*/
+ unsigned char *sec;
+
+ /* check for adaption field */
+ if (block[3] & 0x20)
+ sec = block + block[4] + 4 + 1;
+ else
+ sec = block + 4;
+
+ if (sec[0]) /* table pointer, assumed to be 0 */
+ continue;
+
+ if (sec[1] == 0x02) /* program map section */
+ {
+ pmt_pid = pid;
+ service_id = (sec[4] << 8) | sec[5];
+ return 0;
+ }
+ }
+
+ return -1;
+}