| bool Impala::Core::Stream::RgbDataSrcLavc::PopulateIndex | ( | Lavc::VideoAccessStrategy & | accessStrategy | ) | [inline, private] |
Definition at line 327 of file RgbDataSrcLavc.h.
References Impala::Core::Stream::RgbDataSrcInfo::AddIndex(), Impala::Core::Stream::Lavc::VideoAccessStrategy::CleanUp(), Impala::Core::Stream::Lavc::VideoAccessStrategy::ConstructIndex(), Impala::Core::Stream::RgbDataSrcInfo::DUMMY_FRAME_HASH, Impala::Core::Stream::Lavc::VideoAccessStrategy::FrameHash(), Impala::Core::Stream::Lavc::VideoAccessStrategy::FrameIsValid(), Impala::Core::Stream::Lavc::VideoIndex::GetSeekInfo(), ILOG_DEBUG, ILOG_ERROR, ILOG_INFO, Impala::Core::Stream::RgbDataSrcInfo::MarkBadFrame(), Impala::Core::Stream::RgbDataSrc::mIndexExists, Impala::Core::Stream::Lavc::VideoAccessStrategy::NrOfFrames(), and Scan().
Referenced by Init().
00328 { 00329 if (!Scan(accessStrategy)) 00330 return false; 00331 00332 ILOG_INFO("Starting index population..."); 00333 ILOG_INFO("Constructing intermediate index..."); 00334 Lavc::VideoIndex* tempIndex = accessStrategy.ConstructIndex(); 00335 if (!tempIndex) 00336 { 00337 ILOG_ERROR("Construction of intermediate index failed; " << 00338 "aborting video population"); 00339 return false; 00340 } 00341 00342 // copy data from temp index to local index 00343 const int nrOfFrames = accessStrategy.NrOfFrames(); 00344 String frameHash; 00345 int seekableFrameNr; 00346 UInt64 seekableFramePos = 0; 00347 for (int f = 0; f < nrOfFrames; f++) 00348 { 00349 if (accessStrategy.FrameIsValid(f)) 00350 { 00351 frameHash = accessStrategy.FrameHash(f); 00352 tempIndex->GetSeekInfo(f, &seekableFrameNr, &seekableFramePos); 00353 } 00354 else 00355 { 00356 MarkBadFrame(f); 00357 frameHash = DUMMY_FRAME_HASH; 00358 seekableFrameNr = -1; 00359 seekableFramePos = -1; 00360 } 00361 00362 ILOG_DEBUG("Adding to index: " << f << ", " << seekableFrameNr << 00363 ", " << seekableFramePos << ", " << frameHash); 00364 AddIndex(f, seekableFrameNr, seekableFramePos, frameHash); 00365 } 00366 00367 delete tempIndex; 00368 accessStrategy.CleanUp(); 00369 mIndexExists = true; 00370 ILOG_INFO("Finished index population"); 00371 return true; 00372 }
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