+#include <config.h>
#include <lib/dvb/tstools.h>
+#include <lib/base/eerror.h>
#include <unistd.h>
#include <fcntl.h>
{
m_fd = -1;
m_pid = -1;
- m_maxrange = 1*1024*1024;
+ m_maxrange = 256*1024;
m_begin_valid = 0;
m_end_valid = 0;
{
if (m_fd < 0)
return -1;
- if (m_pid < 0)
- return -1;
offset -= offset % 188;
{
int i = 0;
while (i < 188)
+ {
if (block[i] == 0x47)
break;
+ ++i;
+ }
offset = lseek(m_fd, i - 188, SEEK_CUR);
continue;
}
// printf("PID %04x, PUSI %d\n", pid, pusi);
- if (pid != m_pid)
- continue;
+ if (m_pid >= 0)
+ if (pid != m_pid)
+ continue;
if (!pusi)
continue;
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;
return 0;
}
}
-
+
return -1;
}
{
if (m_fd < 0)
return;
+
if (!m_begin_valid)
{
m_offset_begin = 0;
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;
}
}
return 0;
}
+int eDVBTSTools::calcBitrate()
+{
+ calcBegin(); calcEnd();
+ if (!(m_begin_valid && m_end_valid))
+ return -1;
+
+ pts_t len_in_pts = m_pts_end - m_pts_begin;
+ off_t len_in_bytes = m_offset_end - m_offset_begin;
+
+ if (!len_in_pts)
+ return -1;
+
+ unsigned long long bitrate = len_in_bytes * 90000 * 8 / len_in_pts;
+ if ((bitrate < 10000) || (bitrate > 100000000))
+ return -1;
+
+ return bitrate;
+}