// Stream-in ctor // Create and return a new SampleToChunkAtom by reading in from an ifstream SampleToChunkAtom::SampleToChunkAtom(MP4_FF_FILE *fp, uint32 size, uint32 type, OSCL_wString& filename, uint32 parsingMode) : FullAtom(fp, size, type) { _pfirstChunkVec = NULL; _psamplesPerChunkVec = NULL; _psampleDescriptionIndexVec = NULL; _Index = 0; _numChunksInRun = 0; _majorGetIndex = 0; _currGetChunk = -1; _numGetChunksInRun = 0; _currGetSampleCount = 0; _firstGetSampleInCurrChunk = 0; _numGetSamplesPerChunk = 0; _currGetSDI = 0; _majorPeekIndex = 0; _currPeekChunk = -1; _numPeekChunksInRun = 0; _currPeekSampleCount = 0; _firstPeekSampleInCurrChunk = 0; _numPeekSamplesPerChunk = 0; _currPeekSDI = 0; _parsed_entry_cnt = 0; _fileptr = NULL; _stbl_buff_size = MAX_CACHED_TABLE_ENTRIES_FILE; _next_buff_number = 0; _curr_buff_number = 0; _curr_entry_point = 0; _stbl_fptr_vec = NULL; _parsing_mode = parsingMode; iLogger = PVLogger::GetLoggerObject("mp4ffparser"); iStateVarLogger = PVLogger::GetLoggerObject("mp4ffparser_mediasamplestats"); iParsedDataLogger = PVLogger::GetLoggerObject("mp4ffparser_parseddata"); if (_success) { _currentChunkNumber = 0; _maxNumSamplesPerChunk = DEFAULT_MAX_NUM_SAMPLES_PER_CHUNK; _maxChunkDataSize = DEFAULT_MAX_CHUNK_DATA_SIZE; if (!AtomUtils::read32(fp, _entryCount)) { _success = false; } PVMF_MP4FFPARSER_LOGPARSEDINFO((0, "SampleToChunkAtom::SampleToChunkAtom- _entryCount =%d", _entryCount)); TOsclFileOffset dataSize = _size - (DEFAULT_FULL_ATOM_SIZE + 4); uint32 entrySize = (4 + 4 + 4); if ((TOsclFileOffset)(_entryCount*entrySize) > dataSize) { _success = false; } if (_success) { if (_entryCount > 0) { if (_parsing_mode) { if ((_entryCount > _stbl_buff_size)) // cahce size is 4K so that optimization should work if entry_count is greater than 4K { uint32 fptrBuffSize = (_entryCount / _stbl_buff_size) + 1; PV_MP4_FF_ARRAY_NEW(NULL, TOsclFileOffset, (fptrBuffSize), _stbl_fptr_vec); if (_stbl_fptr_vec == NULL) { _success = false; _mp4ErrorCode = MEMORY_ALLOCATION_FAILED; return; } PV_MP4_FF_ARRAY_NEW(NULL, uint32, (_stbl_buff_size), _pfirstChunkVec); if (_pfirstChunkVec == NULL) { _success = false; _mp4ErrorCode = MEMORY_ALLOCATION_FAILED; return; } PV_MP4_FF_ARRAY_NEW(NULL, uint32, (_stbl_buff_size), _psamplesPerChunkVec); if (_psamplesPerChunkVec == NULL) { _success = false; _mp4ErrorCode = MEMORY_ALLOCATION_FAILED; return; } PV_MP4_FF_ARRAY_NEW(NULL, uint32, (_stbl_buff_size), _psampleDescriptionIndexVec); if (_psampleDescriptionIndexVec == NULL) { _success = false; _mp4ErrorCode = MEMORY_ALLOCATION_FAILED; return; } { OsclAny* ptr = (MP4_FF_FILE *)(oscl_malloc(sizeof(MP4_FF_FILE))); if (ptr == NULL) { _success = false; _mp4ErrorCode = MEMORY_ALLOCATION_FAILED; return; } _fileptr = OSCL_PLACEMENT_NEW(ptr, MP4_FF_FILE()); _fileptr->_fileServSession = fp->_fileServSession; _fileptr->_pvfile.SetCPM(fp->_pvfile.GetCPM()); _fileptr->_pvfile.SetFileHandle(fp->_pvfile.iFileHandle); if (AtomUtils::OpenMP4File(filename, Oscl_File::MODE_READ | Oscl_File::MODE_BINARY, _fileptr) != 0) { _success = false; _mp4ErrorCode = FILE_OPEN_FAILED; } _fileptr->_fileSize = fp->_fileSize; } TOsclFileOffset _head_offset = AtomUtils::getCurrentFilePosition(fp); AtomUtils::seekFromCurrPos(fp, dataSize); AtomUtils::seekFromStart(_fileptr, _head_offset); ParseEntryUnit(0); uint32 firstsamplenum = 0; resetStateVariables(firstsamplenum); return; } else { _parsing_mode = 0; _stbl_buff_size = _entryCount; } } else { _parsing_mode = 0; _stbl_buff_size = _entryCount; } PV_MP4_FF_ARRAY_NEW(NULL, uint32, (_entryCount), _pfirstChunkVec); PV_MP4_FF_ARRAY_NEW(NULL, uint32, (_entryCount), _psamplesPerChunkVec); PV_MP4_FF_ARRAY_NEW(NULL, uint32, (_entryCount), _psampleDescriptionIndexVec); uint32 firstChunk; uint32 samplesPerChunk; uint32 sampleDescrIndex; uint32 offSet = 0; uint32 prevFirstChunk = 0; uint32 j = 0; for (uint32 i = 0; i < _entryCount; i++) { if (!AtomUtils::read32(fp, firstChunk)) { _success = false; break; } if (i == 0) offSet = firstChunk; if (!AtomUtils::read32(fp, samplesPerChunk)) { _success = false; break; } if (!AtomUtils::read32(fp, sampleDescrIndex)) { _success = false; break; } if (firstChunk > prevFirstChunk) { _pfirstChunkVec[j] = (firstChunk - offSet); _psamplesPerChunkVec[j] = (samplesPerChunk); _psampleDescriptionIndexVec[j] = (sampleDescrIndex); prevFirstChunk = firstChunk; j++; } } _entryCount = j; uint32 firstsamplenum = 0; resetStateVariables(firstsamplenum); } else { _pfirstChunkVec = NULL; _psamplesPerChunkVec = NULL; _psampleDescriptionIndexVec = NULL; } } if (!_success) { _mp4ErrorCode = READ_SAMPLE_TO_CHUNK_ATOM_FAILED; PVMF_MP4FFPARSER_LOGERROR((0, "ERROR =>SampleToChunkAtom::SampleToChunkAtom- Read SampleToChunk Atom failed %d", _mp4ErrorCode)); } } else { if (_mp4ErrorCode != ATOM_VERSION_NOT_SUPPORTED) { _mp4ErrorCode = READ_SAMPLE_TO_CHUNK_ATOM_FAILED; PVMF_MP4FFPARSER_LOGERROR((0, "ERROR =>SampleToChunkAtom::SampleToChunkAtom- Read SampleToChunk Atom failed %d", _mp4ErrorCode)); } } }
int32 CompositionOffsetAtom::resetStateVariables() { uint32 sampleNum = 0; return (resetStateVariables(sampleNum)); }