Impala Documentation

bool Impala::Core::Stream::Lavc::StrategyIgnoringNativeIndex::FindSeekPosition	(	int	frameNr,
		UInt64 *	seekPos,
		int *	refPacket
	)			const `[inline, private]`

Definition at line 317 of file StrategyIgnoringNativeIndex.h.

References FindCandidateSeekPosition(), ILOG_DEBUG, and IsValidSeekTarget().

Referenced by ConstructIndexProtected().

00318     {
00319         // find: the first next file position suitable for seeking the frame
00320         bool foundCandSeekPos = FindCandidateSeekPosition(seekPos, refPacket);
00321         if (!foundCandSeekPos || !IsValidSeekTarget(frameNr, *seekPos))
00322         {
00323             ILOG_DEBUG("No valid seek position found for frame " << frameNr);
00324             return false;
00325         }
00326 
00327         // optimize: check whether the next candidate position is also valid
00328         UInt64 nextSeekTarget;
00329         int tempRefPacket = *refPacket;
00330         while (true)
00331         {
00332             foundCandSeekPos = 
00333                 FindCandidateSeekPosition(&nextSeekTarget, &tempRefPacket);
00334             if (!foundCandSeekPos || !IsValidSeekTarget(frameNr, nextSeekTarget))
00335                 break;
00336             *seekPos = nextSeekTarget;
00337             *refPacket = tempRefPacket;
00338         }
00339         return true;
00340     }

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