diff options
Diffstat (limited to 'remux.h')
| -rw-r--r-- | remux.h | 66 |
1 files changed, 62 insertions, 4 deletions
@@ -4,7 +4,7 @@ * See the main source file 'vdr.c' for copyright information and * how to reach the author. * - * $Id: remux.h 2.34 2012/11/06 11:03:06 kls Exp $ + * $Id: remux.h 2.35 2012/11/18 12:17:23 kls Exp $ */ #ifndef __REMUX_H @@ -52,6 +52,11 @@ public: #define PATPID 0x0000 // PAT PID (constant 0) #define MAXPID 0x2000 // for arrays that use a PID as the index +#define PTSTICKS 90000 // number of PTS ticks per second +#define PCRFACTOR 300 // conversion from 27MHz PCR extension to 90kHz PCR base +#define MAX33BIT 0x00000001FFFFFFFFLL // max. possible value with 33 bit +#define MAX27MHZ ((MAX33BIT + 1) * PCRFACTOR - 1) // max. possible PCR value + inline bool TsHasPayload(const uchar *p) { return p[3] & TS_PAYLOAD_EXISTS; @@ -82,6 +87,16 @@ inline bool TsIsScrambled(const uchar *p) return p[3] & TS_SCRAMBLING_CONTROL; } +inline uchar TsGetContinuityCounter(const uchar *p) +{ + return p[3] & TS_CONT_CNT_MASK; +} + +inline void TsSetContinuityCounter(uchar *p, uchar Counter) +{ + p[3] = (p[3] & ~TS_CONT_CNT_MASK) | (Counter & TS_CONT_CNT_MASK); +} + inline int TsPayloadOffset(const uchar *p) { int o = TsHasAdaptationField(p) ? p[4] + 5 : 4; @@ -103,15 +118,31 @@ inline int TsContinuityCounter(const uchar *p) return p[3] & TS_CONT_CNT_MASK; } -inline int TsGetAdaptationField(const uchar *p) +inline int64_t TsGetPcr(const uchar *p) { - return TsHasAdaptationField(p) ? p[5] : 0x00; + if (TsHasAdaptationField(p)) { + if (p[4] >= 7 && (p[5] & TS_ADAPT_PCR)) { + return ((((int64_t)p[ 6]) << 25) | + (((int64_t)p[ 7]) << 17) | + (((int64_t)p[ 8]) << 9) | + (((int64_t)p[ 9]) << 1) | + (((int64_t)p[10]) >> 7)) * PCRFACTOR + + (((((int)p[10]) & 0x01) << 8) | + ( ((int)p[11]))); + } + } + return -1; } +void TsHidePayload(uchar *p); +void TsSetPcr(uchar *p, int64_t Pcr); + // The following functions all take a pointer to a sequence of complete TS packets. int64_t TsGetPts(const uchar *p, int l); -void TsSetTeiOnBrokenPackets(uchar *p, int l); +int64_t TsGetDts(const uchar *p, int l); +void TsSetPts(uchar *p, int l, int64_t Pts); +void TsSetDts(uchar *p, int l, int64_t Dts); // Some PES handling tools: // The following functions that take a pointer to PES data all assume that @@ -142,6 +173,11 @@ inline bool PesHasPts(const uchar *p) return (p[7] & 0x80) && p[8] >= 5; } +inline bool PesHasDts(const uchar *p) +{ + return (p[7] & 0x40) && p[8] >= 10; +} + inline int64_t PesGetPts(const uchar *p) { return ((((int64_t)p[ 9]) & 0x0E) << 29) | @@ -151,6 +187,28 @@ inline int64_t PesGetPts(const uchar *p) ((((int64_t)p[13]) & 0xFE) >> 1); } +inline int64_t PesGetDts(const uchar *p) +{ + return ((((int64_t)p[14]) & 0x0E) << 29) | + (( (int64_t)p[15]) << 22) | + ((((int64_t)p[16]) & 0xFE) << 14) | + (( (int64_t)p[17]) << 7) | + ((((int64_t)p[18]) & 0xFE) >> 1); +} + +void PesSetPts(uchar *p, int64_t Pts); +void PesSetDts(uchar *p, int64_t Dts); + +// PTS handling: + +inline int64_t PtsAdd(int64_t Pts1, int64_t Pts2) { return (Pts1 + Pts2) & MAX33BIT; } + ///< Adds the given PTS values, taking into account the 33bit wrap around. +int64_t PtsDiff(int64_t Pts1, int64_t Pts2); + ///< Returns the difference between two PTS values. The result of Pts2 - Pts1 + ///< is the actual number of 90kHz time ticks that pass from Pts1 to Pts2, + ///< properly taking into account the 33bit wrap around. If Pts2 is "before" + ///< Pts1, the result is negative. + // A transprent TS payload handler: class cTsPayload { |