diff options
Diffstat (limited to 'remux.c')
| -rw-r--r-- | remux.c | 47 |
1 files changed, 16 insertions, 31 deletions
@@ -4,7 +4,7 @@ * See the main source file 'vdr.c' for copyright information and * how to reach the author. * - * $Id: remux.c 2.47 2010/06/05 13:32:15 kls Exp $ + * $Id: remux.c 2.48 2010/11/01 12:29:17 kls Exp $ */ #include "remux.h" @@ -780,9 +780,8 @@ cFrameDetector::cFrameDetector(int Pid, int Type) newFrame = independentFrame = false; numPtsValues = 0; numIFrames = 0; - frameDuration = 0; + framesPerSecond = 0; framesInPayloadUnit = framesPerPayloadUnit = 0; - payloadUnitOfFrame = 0; scanning = false; scanner = EMPTY_SCANNER; } @@ -804,7 +803,6 @@ void cFrameDetector::SetPid(int Pid, int Type) void cFrameDetector::Reset(void) { newFrame = independentFrame = false; - payloadUnitOfFrame = 0; scanning = false; scanner = EMPTY_SCANNER; } @@ -831,8 +829,8 @@ int cFrameDetector::Analyze(const uchar *Data, int Length) return Processed; if (Length < MIN_TS_PACKETS_FOR_FRAME_DETECTOR * TS_SIZE) return Processed; // need more data, in case the frame type is not stored in the first TS packet - if (!frameDuration) { - // frame duration unknown, so collect a sequence of PTS values: + if (!framesPerSecond) { + // frame rate unknown, so collect a sequence of PTS values: if (numPtsValues < MaxPtsValues && numIFrames < 2) { // collect a sequence containing at least two I-frames const uchar *Pes = Data + TsPayloadOffset(Data); if (PesHasPts(Pes)) { @@ -857,28 +855,22 @@ int cFrameDetector::Analyze(const uchar *Data, int Length) uint32_t Delta = ptsValues[0]; // determine frame info: if (isVideo) { - if (Delta % 3600 == 0) - frameDuration = 3600; // PAL, 25 fps, exact timing - else if (abs(Delta % 3600) == 3599 || abs(Delta % 3600) == 1) - frameDuration = 3600; // PAL, 25 fps, timing with jitter + if (abs(Delta - 3600) <= 1) + framesPerSecond = 25.0; else if (Delta % 3003 == 0) - frameDuration = 3003; // NTSC, 29.97 fps - else if (abs(Delta - 1800) <= 1) { - frameDuration = 3600; // PAL, 25 fps - framesPerPayloadUnit = -2; - } - else if (Delta == 1501) { - frameDuration = 3003; // NTSC, 29.97 fps - framesPerPayloadUnit = -2; - } + framesPerSecond = 30.0 / 1.001; + else if (abs(Delta - 1800) <= 1) + framesPerSecond = 50.0; + else if (Delta == 1501) + framesPerSecond = 60.0 / 1.001; else { - frameDuration = 3600; // unknown, assuming 25 fps - dsyslog("unknown frame duration (%d), assuming 25 fps", Delta); + framesPerSecond = 25.0; + dsyslog("unknown frame delta (%d), assuming 25 fps", Delta); } } else // audio - frameDuration = Delta; // PTS of audio frames is always increasing - dbgframes("\nframe duration = %d FPS = %5.2f FPPU = %d\n", frameDuration, 90000.0 / frameDuration, framesPerPayloadUnit); + framesPerSecond = 90000.0 / Delta; // PTS of audio frames is always increasing + dbgframes("\nDelta = %d FPS = %5.2f FPPU = %d\n", Delta, framesPerSecond, framesPerPayloadUnit); } } scanner = EMPTY_SCANNER; @@ -927,13 +919,6 @@ int cFrameDetector::Analyze(const uchar *Data, int Length) newFrame = true; independentFrame = Data[i + 1] == 0x10; if (synced) { - if (framesPerPayloadUnit < 0) { - payloadUnitOfFrame = (payloadUnitOfFrame + 1) % -framesPerPayloadUnit; - if (payloadUnitOfFrame != 0 && independentFrame) - payloadUnitOfFrame = 0; - if (payloadUnitOfFrame) - newFrame = false; - } if (framesPerPayloadUnit <= 1) scanning = false; } @@ -964,7 +949,7 @@ int cFrameDetector::Analyze(const uchar *Data, int Length) pid = 0; // let's just ignore any further data } } - if (!synced && frameDuration && independentFrame) { + if (!synced && framesPerSecond && independentFrame) { synced = true; dbgframes("*"); Reset(); |