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The frame detector now only starts collecting PTS values after it has seen the first I-frame

This commit is contained in:
Klaus Schmidinger 2011-06-11 11:40:18 +02:00
parent b226ab46d6
commit c90e87d71f
3 changed files with 7 additions and 2 deletions
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2
CONTRIBUTORS
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@ -2572,6 +2572,8 @@ Derek Kelly (user.vdr@gmail.com)
for reporting a problem where the frame rate was not detected correctly
for testing the implementation of FE_CAN_TURBO_FEC
for reporting unjustified log entries about changed channel pids
for reporting a problem with the frame detector in case it gets MaxPtsValues values
and stops analyzing even though the incoming data is still garbage
Marcel Unbehaun <frostworks@gmx.de>
for adding cRecordingInfo::GetEvent()

3
HISTORY
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@ -6634,3 +6634,6 @@ Video Disk Recorder Revision History
channel is being received with.
- Fixed detecting frames in case the Picture Start Code or Access Unit Delimiter
extends over TS packet boundaries (reported by Johan Andersson).
- The frame detector now only starts collecting PTS values after it has seen the
first I-frame, otherwise it might get MaxPtsValues values and stop analyzing
even though the incoming data is still garbage (reported by Derek Kelly).

4
remux.c
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@ -4,7 +4,7 @@
* See the main source file 'vdr.c' for copyright information and
* how to reach the author.
*
* $Id: remux.c 2.54 2011/06/11 11:20:06 kls Exp $
* $Id: remux.c 2.55 2011/06/11 11:35:18 kls Exp $
*/
#include "remux.h"
@ -840,7 +840,7 @@ int cFrameDetector::Analyze(const uchar *Data, int Length)
// 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)) {
if (numIFrames && PesHasPts(Pes)) {
ptsValues[numPtsValues] = PesGetPts(Pes);
// check for rollover:
if (numPtsValues && ptsValues[numPtsValues - 1] > 0xF0000000 && ptsValues[numPtsValues] < 0x10000000) {