+ return 1;
+}
+
+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 packet[188];
+ if (m_file.read(packet, 188) != 188)
+ {
+ eDebug("read error");
+ break;
+ }
+ left -= 188;
+
+ if (packet[0] != 0x47)
+ {
+ int i = 0;
+ while (i < 188)
+ {
+ if (packet[i] == 0x47)
+ break;
+ ++i;
+ }
+ m_file.lseek(i - 188, SEEK_CUR);
+ continue;
+ }
+
+ int pid = ((packet[1] << 8) | packet[2]) & 0x1FFF;
+
+ int pusi = !!(packet[1] & 0x40);
+
+ if (!pusi)
+ continue;
+
+ /* ok, now we have a PES header or section header*/
+ unsigned char *sec;
+
+ /* check for adaption field */
+ if (packet[3] & 0x20)
+ {
+ if (packet[4] >= 183)
+ continue;
+ sec = packet + packet[4] + 4 + 1;
+ } else
+ sec = packet + 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;
+}
+
+int eDVBTSTools::findFrame(off_t &_offset, size_t &len, int &direction, int frame_types)
+{
+ off_t offset = _offset;
+ int nr_frames = 0;
+// eDebug("trying to find iFrame at %llx", offset);
+
+ if (!m_use_streaminfo)
+ {
+// eDebug("can't get next iframe without streaminfo");
+ return -1;
+ }
+
+ /* let's find the iframe before the given offset */
+ unsigned long long data;
+
+ if (direction < 0)
+ offset--;
+
+ while (1)
+ {
+ if (m_streaminfo.getStructureEntry(offset, data, (direction == 0) ? 1 : 0))
+ {
+ eDebug("getting structure info for origin offset failed.");
+ return -1;
+ }
+ if (offset == 0x7fffffffffffffffLL) /* eof */
+ {
+ eDebug("reached eof");
+ return -1;
+ }
+ /* data is usually the start code in the lower 8 bit, and the next byte <<8. we extract the picture type from there */
+ /* we know that we aren't recording startcode 0x09 for mpeg2, so this is safe */
+ /* TODO: check frame_types */
+ int is_start = (data & 0xE0FF) == 0x0009; /* H.264 NAL unit access delimiter with I-frame*/
+ is_start |= (data & 0x3800FF) == 0x080000; /* MPEG2 picture start code with I-frame */
+
+ int is_frame = ((data & 0xFF) == 0x0009) || ((data & 0xFF) == 0x00); /* H.264 UAD or MPEG2 start code */
+
+ if (is_frame)
+ {
+ if (direction < 0)
+ --nr_frames;
+ else
+ ++nr_frames;
+ }
+// eDebug("%08llx@%llx -> %d, %d", data, offset, is_start, nr_frames);
+ if (is_start)
+ break;
+
+ if (direction == -1)
+ --offset; /* move to previous entry */
+ else if (direction == +1)
+ direction = 0;
+ }
+ /* let's find the next frame after the given offset */
+ off_t start = offset;
+
+ do {
+ if (m_streaminfo.getStructureEntry(offset, data, 1))
+ {
+ eDebug("get next failed");
+ return -1;
+ }
+ if (offset == 0x7fffffffffffffffLL) /* eof */
+ {
+ eDebug("reached eof (while looking for end of iframe)");
+ return -1;
+ }
+// eDebug("%08llx@%llx (next)", data, offset);
+ } while (((data & 0xFF) != 9) && ((data & 0xFF) != 0x00)); /* next frame */
+
+ /* align to TS pkt start */
+// start = start - (start % 188);
+// offset = offset - (offset % 188);
+
+ len = offset - start;
+ _offset = start;
+ direction = nr_frames;
+// eDebug("result: offset=%llx, len: %ld", offset, (int)len);
+ return 0;
+}
+
+int eDVBTSTools::findNextPicture(off_t &offset, size_t &len, int &distance, int frame_types)
+{
+ int nr_frames, direction;
+// eDebug("trying to move %d frames at %llx", distance, offset);
+
+ frame_types = frametypeI; /* TODO: intelligent "allow IP frames when not crossing an I-Frame */
+
+ off_t new_offset = offset;
+ size_t new_len = len;
+ int first = 1;
+
+ if (distance > 0) {
+ direction = 0;
+ nr_frames = 0;
+ } else {
+ direction = -1;
+ nr_frames = -1;
+ distance = -distance+1;
+ }
+ while (distance > 0)
+ {
+ int dir = direction;
+ if (findFrame(new_offset, new_len, dir, frame_types))
+ {
+// eDebug("findFrame failed!\n");
+ return -1;
+ }
+
+ distance -= abs(dir);
+
+// eDebug("we moved %d, %d to go frames (now at %llx)", dir, distance, new_offset);
+
+ if (distance >= 0 || direction == 0)
+ {
+ first = 0;
+ offset = new_offset;
+ len = new_len;
+ nr_frames += abs(dir);
+ }
+ else if (first) {
+ first = 0;
+ offset = new_offset;
+ len = new_len;
+ nr_frames += abs(dir) + distance; // never jump forward during rewind
+ }
+ }
+
+ distance = (direction < 0) ? -nr_frames : nr_frames;
+// eDebug("in total, we moved %d frames", nr_frames);
+
+ return 0;