m_futile = 0;
}
+void eDVBTSTools::closeSource()
+{
+ m_source = NULL;
+}
+
eDVBTSTools::~eDVBTSTools()
{
- closeFile();
+ closeSource();
}
int eDVBTSTools::openFile(const char *filename, int nostreaminfo)
+{
+ eRawFile *f = new eRawFile();
+ ePtr<iTsSource> src = f;
+
+ if (f->open(filename, 1) < 0)
+ return -1;
+
+ setSource(src, nostreaminfo ? NULL : filename);
+
+ return 0;
+}
+
+void eDVBTSTools::setSource(ePtr<iTsSource> &source, const char *stream_info_filename)
{
closeFile();
-
- if (!nostreaminfo)
+
+ m_source = source;
+
+ if (stream_info_filename)
{
- eDebug("loading streaminfo for %s", filename);
- m_streaminfo.load(filename);
+ eDebug("loading streaminfo for %s", stream_info_filename);
+ m_streaminfo.load(stream_info_filename);
}
if (!m_streaminfo.empty())
// eDebug("no recorded stream information available");
m_use_streaminfo = 0;
}
-
- m_samples_taken = 0;
- if (m_file.open(filename, 1) < 0)
- return -1;
- return 0;
+ m_samples_taken = 0;
}
void eDVBTSTools::closeFile()
{
- m_file.close();
+ if (m_source)
+ closeSource();
}
void eDVBTSTools::setSyncPID(int pid)
if (!m_streaminfo.getPTS(offset, pts))
return 0;
- if (!m_file.valid())
+ if (!m_source || !m_source->valid())
return -1;
offset -= offset % 188;
-
- if (m_file.lseek(offset, SEEK_SET) < 0)
- {
- eDebug("lseek failed");
- return -1;
- }
-
+
int left = m_maxrange;
while (left >= 188)
{
unsigned char packet[188];
- if (m_file.read(packet, 188) != 188)
+ if (m_source->read(offset, packet, 188) != 188)
{
eDebug("read error");
break;
}
left -= 188;
offset += 188;
-
+
if (packet[0] != 0x47)
{
eDebug("resync");
if (packet[i] == 0x47)
break;
++i;
+ --offset;
}
- offset = m_file.lseek(i - 188, SEEK_CUR);
continue;
}
} else
payload = packet + 4;
-
/* if (m_pid >= 0)
if (pid != m_pid)
continue; */
if (!pusi)
continue;
-
-
+
/* somehow not a startcode. (this is invalid, since pusi was set.) ignore it. */
if (payload[0] || payload[1] || (payload[2] != 1))
continue;
-
+
+ if (payload[3] == 0xFD)
+ { // stream use extension mechanism defined in ISO 13818-1 Amendment 2
+ if (payload[7] & 1) // PES extension flag
+ {
+ int offs = 0;
+ if (payload[7] & 0x80) // pts avail
+ offs += 5;
+ if (payload[7] & 0x40) // dts avail
+ offs += 5;
+ if (payload[7] & 0x20) // escr avail
+ offs += 6;
+ if (payload[7] & 0x10) // es rate
+ offs += 3;
+ if (payload[7] & 0x8) // dsm trickmode
+ offs += 1;
+ if (payload[7] & 0x4) // additional copy info
+ offs += 1;
+ if (payload[7] & 0x2) // crc
+ offs += 2;
+ if (payload[8] < offs)
+ continue;
+ uint8_t pef = payload[9+offs++]; // pes extension field
+ if (pef & 1) // pes extension flag 2
+ {
+ if (pef & 0x80) // private data flag
+ offs += 16;
+ if (pef & 0x40) // pack header field flag
+ offs += 1;
+ if (pef & 0x20) // program packet sequence counter flag
+ offs += 2;
+ if (pef & 0x10) // P-STD buffer flag
+ offs += 2;
+ if (payload[8] < offs)
+ continue;
+ uint8_t stream_id_extension_len = payload[9+offs++] & 0x7F;
+ if (stream_id_extension_len >= 1)
+ {
+ if (payload[8] < (offs + stream_id_extension_len) )
+ continue;
+ if (payload[9+offs] & 0x80) // stream_id_extension_bit (should not set)
+ continue;
+ switch (payload[9+offs])
+ {
+ case 0x55 ... 0x5f: // VC-1
+ break;
+ case 0x71: // AC3 / DTS
+ break;
+ case 0x72: // DTS - HD
+ break;
+ default:
+ eDebug("skip unknwn stream_id_extension %02x\n", payload[9+offs]);
+ continue;
+ }
+ }
+ else
+ continue;
+ }
+ else
+ continue;
+ }
+ else
+ continue;
+ }
/* drop non-audio, non-video packets because other streams
can be non-compliant.*/
- if (((payload[3] & 0xE0) != 0xC0) && // audio
- ((payload[3] & 0xF0) != 0xE0)) // video
+ else if (((payload[3] & 0xE0) != 0xC0) && // audio
+ ((payload[3] & 0xF0) != 0xE0)) // video
continue;
-
+
if (payload[7] & 0x80) /* PTS */
{
pts = ((unsigned long long)(payload[ 9]&0xE)) << 29;
void eDVBTSTools::calcBegin()
{
- if (!m_file.valid())
+ if (!m_source || !m_source->valid())
return;
if (!(m_begin_valid || m_futile))
void eDVBTSTools::calcEnd()
{
- if (!m_file.valid())
+ if (!m_source || !m_source->valid())
return;
-
- off_t end = m_file.lseek(0, SEEK_END);
+
+ off_t end = m_source->lseek(0, SEEK_END);
if (llabs(end - m_last_filelength) > 1*1024*1024)
{
int eDVBTSTools::findPMT(int &pmt_pid, int &service_id)
{
/* FIXME: this will be factored out soon! */
- if (!m_file.valid())
+ if (!m_source || !m_source->valid())
{
eDebug(" file not valid");
return -1;
}
- if (m_file.lseek(0, SEEK_SET) < 0)
- {
- eDebug("seek failed");
- return -1;
- }
+ off_t position=0;
int left = 5*1024*1024;
while (left >= 188)
{
unsigned char packet[188];
- if (m_file.read(packet, 188) != 188)
+ int ret = m_source->read(position, packet, 188);
+ if (ret != 188)
{
eDebug("read error");
break;
}
left -= 188;
-
+ position += 188;
+
if (packet[0] != 0x47)
{
int i = 0;
{
if (packet[i] == 0x47)
break;
+ --position;
++i;
}
- m_file.lseek(i - 188, SEEK_CUR);
continue;
}
-
int pid = ((packet[1] << 8) | packet[2]) & 0x1FFF;
int pusi = !!(packet[1] & 0x40);
else if (direction == +1)
direction = 0;
}
- /* let's find the next frame after the given offset */
off_t start = offset;
+#if 0
+ /* backtrack to find the previous sequence start, in case of MPEG2 */
+ if ((data & 0xFF) == 0x00) {
+ do {
+ --start;
+ if (m_streaminfo.getStructureEntry(start, data, 0))
+ {
+ eDebug("get previous failed");
+ return -1;
+ }
+ } while (((data & 0xFF) != 9) && ((data & 0xFF) != 0x00) && ((data & 0xFF) != 0xB3)); /* sequence start or previous frame */
+ if ((data & 0xFF) != 0xB3)
+ start = offset; /* Failed to find corresponding sequence start, so never mind */
+ }
+
+#endif
+
+ /* let's find the next frame after the given offset */
do {
if (m_streaminfo.getStructureEntry(offset, data, 1))
{
// eDebug("%08llx@%llx (next)", data, offset);
} while (((data & 0xFF) != 9) && ((data & 0xFF) != 0x00)); /* next frame */
+#if 0
/* align to TS pkt start */
-// start = start - (start % 188);
-// offset = offset - (offset % 188);
+ start = start - (start % 188);
+ offset = offset - (offset % 188);
+#endif
len = offset - start;
_offset = start;
git.cweiske.de / enigma2.git / blobdiff