| bool Impala::Core::Stream::RgbDataSrcLavc::PopulateIndex | ( | Lavc::VideoAccessStrategy & | accessStrategy | ) | [inline, private] |
Definition at line 309 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().
00310 { 00311 if (!Scan(accessStrategy)) 00312 return false; 00313 00314 ILOG_INFO("Starting index population..."); 00315 ILOG_INFO("Constructing intermediate index..."); 00316 Lavc::VideoIndex* tempIndex = accessStrategy.ConstructIndex(); 00317 if (!tempIndex) 00318 { 00319 ILOG_ERROR("Construction of intermediate index failed; " << 00320 "aborting video population"); 00321 return false; 00322 } 00323 00324 // copy data from temp index to local index 00325 const int nrOfFrames = accessStrategy.NrOfFrames(); 00326 String frameHash; 00327 int seekableFrameNr; 00328 UInt64 seekableFramePos = 0; 00329 for (int f = 0; f < nrOfFrames; f++) 00330 { 00331 if (accessStrategy.FrameIsValid(f)) 00332 { 00333 frameHash = accessStrategy.FrameHash(f); 00334 tempIndex->GetSeekInfo(f, &seekableFrameNr, &seekableFramePos); 00335 } 00336 else 00337 { 00338 MarkBadFrame(f); 00339 frameHash = DUMMY_FRAME_HASH; 00340 seekableFrameNr = -1; 00341 seekableFramePos = -1; 00342 } 00343 00344 ILOG_DEBUG("Adding to index: " << f << ", " << seekableFrameNr << 00345 ", " << seekableFramePos << ", " << frameHash); 00346 AddIndex(f, seekableFrameNr, seekableFramePos, frameHash); 00347 } 00348 00349 delete tempIndex; 00350 accessStrategy.CleanUp(); 00351 mIndexExists = true; 00352 ILOG_INFO("Finished index population"); 00353 return true; 00354 }
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