Impala Documentation

bool Impala::Core::Stream::Lavc::StrategyIgnoringNativeIndex::ScanOnePacket	(	int *	packetCount,
		int *	frameCount,
		bool	validating
	)			`[inline, private]`

Definition at line 207 of file StrategyIgnoringNativeIndex.h.

References Impala::Core::Stream::Lavc::VideoAccessObject::AtEof(), Impala::Core::Stream::Lavc::VideoAccessObject::GopSize(), ILOG_DEBUG, Impala::Max(), Impala::Core::Stream::Lavc::VideoAccessStrategy::mVao, ProcessPacket(), and Impala::Core::Stream::Lavc::VideoAccessObject::ReadPacket().

Referenced by ScanPackets().

00208     {
00209         const int MAX_POST_EOF_FAILURES = Max(15, 2 * mVao->GopSize());
00210         int nrOfConsecutivePostEofFailures = 0;
00211 
00212         while (true)
00213         {
00214             const bool atEofBeforeRead = mVao->AtEof();
00215             const int readPacketResult = mVao->ReadPacket();
00216             if (mVao->AtEof() && !atEofBeforeRead)
00217                 ILOG_DEBUG("Reached end of file");
00218 
00219             const bool readPacketFailed = (readPacketResult < 0);
00220             if (!readPacketFailed)
00221             {
00222                 if (atEofBeforeRead)
00223                 {
00224                     ILOG_DEBUG("A packet was successfully read after " <<
00225                         "reading arrived at end of file");
00226                 }
00227                 const int packetNr = (*packetCount)++;
00228                 ProcessPacket(packetNr, frameCount, validating);
00229                 return false;
00230             }
00231 
00232             ILOG_DEBUG("ReadPacket() failed and returned: " << 
00233                 readPacketResult);
00234 
00235             if (atEofBeforeRead)
00236             {
00237                 if (readPacketFailed)
00238                 {
00239                     nrOfConsecutivePostEofFailures++;
00240                     if (nrOfConsecutivePostEofFailures > MAX_POST_EOF_FAILURES)
00241                     {
00242                         ILOG_DEBUG("Max. nr of consecutive post-EOF " <<
00243                             "read failures reached (" <<
00244                             MAX_POST_EOF_FAILURES << ")");
00245                         return true;
00246                     }
00247                 }
00248                 else 
00249                     nrOfConsecutivePostEofFailures = 0;
00250             }
00251         }
00252     }

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