diff options
| -rw-r--r-- | CONTRIBUTORS | 1 | ||||
| -rw-r--r-- | HISTORY | 1 | ||||
| -rw-r--r-- | remux.c | 35 |
3 files changed, 33 insertions, 4 deletions
diff --git a/CONTRIBUTORS b/CONTRIBUTORS index 279c0dfb..f3b5ef3b 100644 --- a/CONTRIBUTORS +++ b/CONTRIBUTORS @@ -529,3 +529,4 @@ Paul Gohn <pgohn@nexgo.de> Teemu Rantanen <tvr@iki.fi> for increased the maximum possible packet size in remux.c to avoid corrupted streams with broadcasters that send extremely large PES packets + for adding TS error checking to remux.c @@ -1927,3 +1927,4 @@ Video Disk Recorder Revision History class to make sure replay remains smooth even under heavy system load. - Increased the maximum possible packet size in remux.c to avoid corrupted streams with broadcasters that send extremely large PES packets (thanks to Teemu Rantanen). +- Added TS error checking to remux.c (thanks to Teemu Rantanen). @@ -8,7 +8,7 @@ * the Linux DVB driver's 'tuxplayer' example and were rewritten to suit * VDR's needs. * - * $Id: remux.c 1.13 2003/01/24 14:21:17 kls Exp $ + * $Id: remux.c 1.14 2003/01/24 17:22:29 kls Exp $ */ /* The calling interface of the 'cRemux::Process()' function is defined @@ -97,11 +97,13 @@ #define PTS_ONLY 0x80 #define TS_SIZE 188 -#define PAY_START 0x40 #define PID_MASK_HI 0x1F -//flags +#define CONT_CNT_MASK 0x0F + +// Flags: +#define PAY_START 0x40 +#define TS_ERROR 0x80 #define ADAPT_FIELD 0x20 -//XXX TODO #define MAX_PLENGTH 0xFFFF // the maximum PES packet length (theoretically) #define MMAX_PLENGTH (8*MAX_PLENGTH) // some stations send PES packets that are extremely large, e.g. DVB-T in Finland @@ -132,6 +134,9 @@ private: bool done; uint8_t *resultBuffer; int *resultCount; + int tsErrors; + int ccErrors; + int ccCounter; static uint8_t headr[]; void store(uint8_t *Data, int Count); void reset_ipack(void); @@ -154,6 +159,10 @@ cTS2PES::cTS2PES(uint8_t *ResultBuffer, int *ResultCount, int Size, uint8_t Audi size = Size; audioCid = AudioCid; + tsErrors = 0; + ccErrors = 0; + ccCounter = -1; + if (!(buf = MALLOC(uint8_t, size))) esyslog("Not enough memory for ts_transform"); @@ -162,6 +171,8 @@ cTS2PES::cTS2PES(uint8_t *ResultBuffer, int *ResultCount, int Size, uint8_t Audi cTS2PES::~cTS2PES() { + if (tsErrors || ccErrors) + dsyslog("cTS2PES got %d TS errors, %d TS continuity errors", tsErrors, ccErrors); free(buf); } @@ -400,6 +411,22 @@ void cTS2PES::ts_to_pes(const uint8_t *Buf) // don't need count (=188) if (!Buf) return; + if (Buf[1] & TS_ERROR) + tsErrors++; + if ((Buf[3] ^ ccCounter) & CONT_CNT_MASK) { + // This should check duplicates and packets which do not increase the counter. + // But as the errors usually come in bursts this should be enough to + // show you there is something wrong with signal quality. + if (ccCounter != -1 && ((Buf[3] ^ (ccCounter + 1)) & CONT_CNT_MASK)) { + ccErrors++; + // Enable this if you are having problems with signal quality. + // These are the errors I used to get with Nova-T when antenna + // was not positioned correcly (not transport errors). //tvr + //dsyslog("TS continuity error (%d)", ccCounter); + } + ccCounter = Buf[3] & CONT_CNT_MASK; + } + if (Buf[1] & PAY_START) { if (plength == MMAX_PLENGTH - 6 && found > 6) { plength = found - 6; |