+bool eDVBResourceManager::canMeasureFrontendInputPower()
+{
+ for (eSmartPtrList<eDVBRegisteredFrontend>::iterator i(m_frontend.begin()); i != m_frontend.end(); ++i)
+ {
+ return i->m_frontend->readInputpower() >= 0;
+ }
+ return false;
+}
+
+class eDVBChannelFilePush: public eFilePushThread
+{
+public:
+ eDVBChannelFilePush() { setIFrameSearch(0); setTimebaseChange(0); }
+ void setIFrameSearch(int enabled) { m_iframe_search = enabled; m_iframe_state = 0; }
+
+ /* "timebase change" is for doing trickmode playback at an exact speed, even when pictures are skipped. */
+ /* you need to set it to 1/16 if you want 16x playback, for example. you need video master sync. */
+ void setTimebaseChange(int ratio) { m_timebase_change = ratio; } /* 16bit fixpoint, 0 for disable */
+protected:
+ int m_iframe_search, m_iframe_state, m_pid;
+ int m_timebase_change;
+ int filterRecordData(const unsigned char *data, int len, size_t ¤t_span_remaining);
+};
+
+int eDVBChannelFilePush::filterRecordData(const unsigned char *_data, int len, size_t ¤t_span_remaining)
+{
+#if 0
+ if (m_timebase_change)
+ {
+ eDebug("timebase change: %d", m_timebase_change);
+ int offset;
+ for (offset = 0; offset < len; offset += 188)
+ {
+ unsigned char *pkt = (unsigned char*)_data + offset;
+ if (pkt[1] & 0x40) /* pusi */
+ {
+ if (pkt[3] & 0x20) // adaption field present?
+ pkt += pkt[4] + 4 + 1; /* skip adaption field and header */
+ else
+ pkt += 4; /* skip header */
+ if (pkt[0] || pkt[1] || (pkt[2] != 1))
+ {
+ eWarning("broken startcode");
+ continue;
+ }
+
+ pts_t pts = 0;
+
+ if (pkt[7] & 0x80) // PTS present?
+ {
+ pts = ((unsigned long long)(pkt[ 9]&0xE)) << 29;
+ pts |= ((unsigned long long)(pkt[10]&0xFF)) << 22;
+ pts |= ((unsigned long long)(pkt[11]&0xFE)) << 14;
+ pts |= ((unsigned long long)(pkt[12]&0xFF)) << 7;
+ pts |= ((unsigned long long)(pkt[13]&0xFE)) >> 1;
+
+#if 0
+ off_t off = 0;
+ RESULT r = m_tstools.fixupPTS(off, pts);
+ if (r)
+ eWarning("fixup PTS while trickmode playback failed.\n");
+#endif
+
+ int sec = pts / 90000;
+ int frm = pts % 90000;
+ int min = sec / 60;
+ sec %= 60;
+ int hr = min / 60;
+ min %= 60;
+ int d = hr / 24;
+ hr %= 24;
+
+// eDebug("original, fixed pts: %016llx %d:%02d:%02d:%02d:%05d", pts, d, hr, min, sec, frm);
+
+ pts += 0x80000000LL;
+ pts *= m_timebase_change;
+ pts >>= 16;
+
+ sec = pts / 90000;
+ frm = pts % 90000;
+ min = sec / 60;
+ sec %= 60;
+ hr = min / 60;
+ min %= 60;
+ d = hr / 24;
+ hr %= 24;
+
+// eDebug("new pts (after timebase change): %016llx %d:%02d:%02d:%02d:%05d", pts, d, hr, min, sec, frm);
+
+ pkt[9] &= ~0xE;
+ pkt[10] = 0;
+ pkt[11] &= ~1;
+ pkt[12] = 0;
+ pkt[13] &= ~1;
+
+ pkt[9] |= (pts >> 29) & 0xE;
+ pkt[10] |= (pts >> 22) & 0xFF;
+ pkt[11] |= (pts >> 14) & 0xFE;
+ pkt[12] |= (pts >> 7) & 0xFF;
+ pkt[13] |= (pts << 1) & 0xFE;
+ }
+ }
+ }
+ }
+#endif
+
+#if 1 /* not yet */
+ if (!m_iframe_search)
+ return len;
+
+ unsigned char *data = (unsigned char*)_data; /* remove that const. we know what we are doing. */
+
+// eDebug("filterRecordData, size=%d (mod 188=%d), first byte is %02x", len, len %188, data[0]);
+
+ unsigned char *d = data;
+ while ((d = (unsigned char*)memmem(d, data + len - d, "\x00\x00\x01", 3)))
+ {
+ int offset = d - data;
+ int ts_offset = offset - offset % 188; /* offset to the start of TS packet */
+ unsigned char *ts = data + ts_offset;
+ int pid = ((ts[1] << 8) | ts[2]) & 0x1FFF;
+
+ if ((d[3] == 0 || d[3] == 0x09 && d[-1] == 0 && (ts[1] & 0x40)) && (m_pid == pid)) /* picture start */
+ {
+ int picture_type = (d[3]==0 ? (d[5] >> 3) & 7 : (d[4] >> 5) + 1);
+ d += 4;
+
+// eDebug("%d-frame at %d, offset in TS packet: %d, pid=%04x", picture_type, offset, offset % 188, pid);
+
+ if (m_iframe_state == 1)
+ {
+ /* we are allowing data, and stop allowing data on the next frame.
+ we now found a frame. so stop here. */
+ memset(data + offset, 0, 188 - (offset%188)); /* zero out rest of TS packet */
+ current_span_remaining = 0;
+ m_iframe_state = 0;
+ unsigned char *fts = ts + 188;
+ while (fts < (data + len))
+ {
+ fts[1] |= 0x1f;
+ fts[2] |= 0xff; /* drop packet */
+ fts += 188;
+ }
+
+ return len; // ts_offset + 188; /* deliver this packet, but not more. */
+ } else
+ {
+ if (picture_type != 1) /* we are only interested in I frames */
+ continue;
+
+ unsigned char *fts = data;
+ while (fts < ts)
+ {
+ fts[1] |= 0x1f;
+ fts[2] |= 0xff; /* drop packet */
+
+ fts += 188;
+ }
+ /* force payload only */
+ ts[3] &= ~0x30;
+ ts[3] |= 0x10;
+
+// memset(ts + 4, 0xFF, (offset % 188) - 4);
+
+ m_iframe_state = 1;
+ }
+ } else if ((d[3] & 0xF0) == 0xE0) /* video stream */
+ {
+ /* verify that this is actually a PES header, not just some ES data */
+ if (ts[1] & 0x40) /* PUSI set */
+ {
+ int payload_start = 4;
+ if (ts[3] & 0x20) /* adaptation field present */
+ payload_start += ts[4] + 1; /* skip AF */
+ if (payload_start == (offset%184)) /* the 00 00 01 should be directly at the payload start, otherwise it's not a PES header */
+ {
+ if (m_pid != pid)
+ {
+ eDebug("now locked to pid %04x (%02x %02x %02x %02x)", pid, ts[0], ts[1], ts[2], ts[3]);
+ m_pid = pid;
+ }
+ }
+ }
+// m_pid = 0x6e;
+ d += 4;
+ } else
+ d += 4; /* ignore */
+
+ }
+
+ if (m_iframe_state == 1)
+ return len;
+ else
+ return 0; /* we need find an iframe first */
+#else
+ return len;
+#endif
+}
+
git.cweiske.de / enigma2.git / blobdiff