//-*****************************************************************************
// Same as above, only this time for the files.
// Alembic uses LittleEndian by default.
hid_t GetFileH5T( const AbcA::DataType &adt, bool &oCleanUp )
{
oCleanUp = false;
hid_t baseDtype = -1;
switch ( adt.getPod() )
{
case kBooleanPOD:
oCleanUp = true;
baseDtype = GetFileBoolH5T(); break;
case kUint8POD: baseDtype = H5T_STD_U8LE; break;
case kInt8POD: baseDtype = H5T_STD_I8LE; break;
case kUint16POD: baseDtype = H5T_STD_U16LE; break;
case kInt16POD: baseDtype = H5T_STD_I16LE; break;
case kUint32POD: baseDtype = H5T_STD_U32LE; break;
case kInt32POD: baseDtype = H5T_STD_I32LE; break;
case kUint64POD: baseDtype = H5T_STD_U64LE; break;
case kInt64POD: baseDtype = H5T_STD_I64LE; break;
case kFloat16POD:
oCleanUp = true;
baseDtype = GetFileHalfH5T(); break;
case kFloat32POD: baseDtype = H5T_IEEE_F32LE; break;
case kFloat64POD: baseDtype = H5T_IEEE_F64LE; break;
default:
ABCA_THROW( "Unsuppored POD type: " << PODName( adt.getPod() ) );
}
ABCA_ASSERT( baseDtype >= 0, "Bad base datatype id" );
return baseDtype;
}
//-*****************************************************************************
//-*****************************************************************************
//-*****************************************************************************
// SUPPORT FUNCTIONS
//-*****************************************************************************
//-*****************************************************************************
//-*****************************************************************************
// In order to read or write a slab of a given DataType, we need an H5::Datatype
// for the dataset in the file, and a 'native' one for how it will be
// stored in local memory. We are not bothering with named datatypes for now.
// Though, it may prove timesaving later on.
//
// So - we need some sort of structure which allows you to take an
// AlembicAsset::DataType and come up with an H5::Datatype for it.
hid_t GetNativeH5T( const AbcA::DataType &adt, bool &oCleanUp )
{
oCleanUp = false;
hid_t baseDtype = -1;
switch ( adt.getPod() )
{
case kBooleanPOD:
oCleanUp = true;
baseDtype = GetNativeBoolH5T();
break;
case kUint8POD: baseDtype = H5T_NATIVE_UINT8; break;
case kInt8POD: baseDtype = H5T_NATIVE_INT8; break;
case kUint16POD: baseDtype = H5T_NATIVE_UINT16; break;
case kInt16POD: baseDtype = H5T_NATIVE_INT16; break;
case kUint32POD: baseDtype = H5T_NATIVE_UINT32; break;
case kInt32POD: baseDtype = H5T_NATIVE_INT32; break;
case kUint64POD: baseDtype = H5T_NATIVE_UINT64; break;
case kInt64POD: baseDtype = H5T_NATIVE_INT64; break;
case kFloat16POD:
oCleanUp = true;
baseDtype = GetNativeHalfH5T();
break;
case kFloat32POD: baseDtype = H5T_NATIVE_FLOAT; break;
case kFloat64POD: baseDtype = H5T_NATIVE_DOUBLE; break;
default:
ABCA_THROW( "Unsuppored POD type: " << PODName( adt.getPod() ) );
}
ABCA_ASSERT( baseDtype >= 0, "Bad base datatype id" );
return baseDtype;
}
//-*****************************************************************************
AbcA::ArrayPropertyWriterPtr
CpwData::createArrayProperty( AbcA::CompoundPropertyWriterPtr iParent,
const std::string & iName,
const AbcA::MetaData & iMetaData,
const AbcA::DataType & iDataType,
Util::uint32_t iTimeSamplingIndex )
{
if ( m_madeProperties.count( iName ) )
{
ABCA_THROW( "Already have a property named: " << iName );
}
ABCA_ASSERT( iDataType.getExtent() != 0 &&
iDataType.getPod() != Alembic::Util::kNumPlainOldDataTypes &&
iDataType.getPod() != Alembic::Util::kUnknownPOD,
"createArrayProperty, illegal DataType provided.");
// will assert if TimeSamplingPtr not found
AbcA::TimeSamplingPtr ts =
iParent->getObject()->getArchive()->getTimeSampling(
iTimeSamplingIndex );
PropertyHeaderPtr headerPtr( new PropertyHeaderAndFriends( iName,
AbcA::kArrayProperty, iMetaData, iDataType, ts, iTimeSamplingIndex ) );
Alembic::Util::shared_ptr<ApwImpl>
ret( new ApwImpl( iParent, m_group->addGroup(), headerPtr,
m_propertyHeaders.size() ) );
m_propertyHeaders.push_back( headerPtr );
m_madeProperties[iName] = WeakBpwPtr( ret );
m_hashes.push_back(0);
m_hashes.push_back(0);
return ret;
}
//-*****************************************************************************
void WritePropertyInfo( hid_t iGroup,
const std::string &iName,
AbcA::PropertyType iPropertyType,
const AbcA::DataType &iDataType,
bool isScalarLike,
uint32_t iTimeSamplingIndex,
uint32_t iNumSamples,
uint32_t iFirstChangedIndex,
uint32_t iLastChangedIndex )
{
uint32_t info[5] = {0, 0, 0, 0, 0};
uint32_t numFields = 1;
static const uint32_t ptypeMask = ( uint32_t )BOOST_BINARY (
0000 0000 0000 0000 0000 0000 0000 0011 );
static const uint32_t podMask = ( uint32_t )BOOST_BINARY (
0000 0000 0000 0000 0000 0000 0011 1100 );
static const uint32_t hasTsidxMask = ( uint32_t )BOOST_BINARY (
0000 0000 0000 0000 0000 0000 0100 0000 );
static const uint32_t noRepeatsMask = ( uint32_t )BOOST_BINARY (
0000 0000 0000 0000 0000 0000 1000 0000 );
static const uint32_t extentMask = ( uint32_t )BOOST_BINARY(
0000 0000 0000 0000 1111 1111 0000 0000 );
// for compounds we just write out 0
if ( iPropertyType != AbcA::kCompoundProperty )
{
// Slam the property type in there.
info[0] |= ptypeMask & ( uint32_t )iPropertyType;
// arrays may be scalar like, scalars are already scalar like
info[0] |= ( uint32_t ) isScalarLike;
uint32_t pod = ( uint32_t )iDataType.getPod();
info[0] |= podMask & ( pod << 2 );
if (iTimeSamplingIndex != 0)
{
info[0] |= hasTsidxMask;
}
if (iFirstChangedIndex == 1 && iLastChangedIndex == iNumSamples - 1)
{
info[0] |= noRepeatsMask;
}
uint32_t extent = ( uint32_t )iDataType.getExtent();
info[0] |= extentMask & ( extent << 8 );
ABCA_ASSERT( iFirstChangedIndex <= iNumSamples &&
iLastChangedIndex <= iNumSamples &&
iFirstChangedIndex <= iLastChangedIndex,
"Illegal Sampling!" << std::endl <<
"Num Samples: " << iNumSamples << std::endl <<
"First Changed Index: " << iFirstChangedIndex << std::endl <<
"Last Changed Index: " << iLastChangedIndex << std::endl );
// Write the num samples. Only bother writing if
// the num samples is greater than 1. Existence of name.smp0
// is used by the reader to determine if 0 or 1 sample.
if ( iNumSamples > 1 )
{
info[1] = iNumSamples;
numFields ++;
if ( iFirstChangedIndex > 1 || ( iLastChangedIndex != 0 &&
iLastChangedIndex != iNumSamples - 1 ) )
{
info[2] = iFirstChangedIndex;
info[3] = iLastChangedIndex;
numFields += 2;
}
}
// finally set time sampling index on the end if necessary
if (iTimeSamplingIndex != 0)
{
info[numFields] = iTimeSamplingIndex;
numFields ++;
}
}
WriteSmallArray( iGroup, iName + ".info",
H5T_STD_U32LE, H5T_NATIVE_UINT32, numFields,
( const void * ) info );
}
//-*****************************************************************************
void
ReadArray( void * iIntoLocation,
hid_t iParent,
const std::string &iName,
const AbcA::DataType &iDataType,
hid_t iType )
{
// Dispatch string stuff.
if ( iDataType.getPod() == kStringPOD )
{
return ReadStringArray( iIntoLocation, iParent, iName, iDataType );
}
else if ( iDataType.getPod() == kWstringPOD )
{
return ReadWstringArray( iIntoLocation, iParent, iName, iDataType );
}
assert( iDataType.getPod() != kStringPOD &&
iDataType.getPod() != kWstringPOD );
// Open the data set.
hid_t dsetId = H5Dopen( iParent, iName.c_str(), H5P_DEFAULT );
ABCA_ASSERT( dsetId >= 0, "Cannot open dataset: " << iName );
DsetCloser dsetCloser( dsetId );
// Read the data space.
hid_t dspaceId = H5Dget_space( dsetId );
ABCA_ASSERT( dspaceId >= 0, "Could not get dataspace for dataSet: "
<< iName );
DspaceCloser dspaceCloser( dspaceId );
// Read the data type.
hid_t dtypeId = H5Dget_type( dsetId );
ABCA_ASSERT( dtypeId >= 0, "Could not get datatype for dataSet: "
<< iName );
DtypeCloser dtypeCloser( dtypeId );
H5S_class_t dspaceClass = H5Sget_simple_extent_type( dspaceId );
if ( dspaceClass == H5S_SIMPLE )
{
// Get the dimensions
int rank = H5Sget_simple_extent_ndims( dspaceId );
ABCA_ASSERT( rank == 1,
"H5Sget_simple_extent_ndims() must be 1." );
hsize_t hdim = 0;
rank = H5Sget_simple_extent_dims( dspaceId, &hdim, NULL );
ABCA_ASSERT( hdim > 0,
"Degenerate dims in Dataset read" );
// And... read into it.
herr_t status = H5Dread( dsetId, iType,
H5S_ALL, H5S_ALL, H5P_DEFAULT,
iIntoLocation );
ABCA_ASSERT( status >= 0, "H5Dread() failed." );
}
else if ( dspaceClass != H5S_NULL )
{
ABCA_THROW( "Unexpected scalar dataspace encountered." );
}
}
//-*****************************************************************************
AbcA::ArraySamplePtr
ReadArray( AbcA::ReadArraySampleCachePtr iCache,
hid_t iParent,
const std::string &iName,
const AbcA::DataType &iDataType,
hid_t iFileType,
hid_t iNativeType )
{
// Dispatch string stuff.
if ( iDataType.getPod() == kStringPOD )
{
return ReadStringArray( iCache, iParent, iName, iDataType );
}
else if ( iDataType.getPod() == kWstringPOD )
{
return ReadWstringArray( iCache, iParent, iName, iDataType );
}
assert( iDataType.getPod() != kStringPOD &&
iDataType.getPod() != kWstringPOD );
// Open the data set.
hid_t dsetId = H5Dopen( iParent, iName.c_str(), H5P_DEFAULT );
ABCA_ASSERT( dsetId >= 0, "Cannot open dataset: " << iName );
DsetCloser dsetCloser( dsetId );
// Read the data space.
hid_t dspaceId = H5Dget_space( dsetId );
ABCA_ASSERT( dspaceId >= 0, "Could not get dataspace for dataSet: "
<< iName );
DspaceCloser dspaceCloser( dspaceId );
AbcA::ArraySample::Key key;
bool foundDigest = false;
// if we are caching, get the key and see if it is being used
if ( iCache )
{
key.origPOD = iDataType.getPod();
key.readPOD = key.origPOD;
key.numBytes = Util::PODNumBytes( key.readPOD ) *
H5Sget_simple_extent_npoints( dspaceId );
foundDigest = ReadKey( dsetId, "key", key );
AbcA::ReadArraySampleID found = iCache->find( key );
if ( found )
{
AbcA::ArraySamplePtr ret = found.getSample();
assert( ret );
if ( ret->getDataType().getPod() != iDataType.getPod() )
{
ABCA_THROW( "ERROR: Read data type for dset: " << iName
<< ": " << ret->getDataType()
<< " does not match expected data type: "
<< iDataType );
}
// Got it!
return ret;
}
}
// Okay, we haven't found it in a cache.
// Read the data type.
hid_t dtypeId = H5Dget_type( dsetId );
ABCA_ASSERT( dtypeId >= 0, "Could not get datatype for dataSet: "
<< iName );
DtypeCloser dtypeCloser( dtypeId );
ABCA_ASSERT( EquivalentDatatypes( iFileType, dtypeId ),
"File DataType clash for array dataset: "
<< iName );
AbcA::ArraySamplePtr ret;
H5S_class_t dspaceClass = H5Sget_simple_extent_type( dspaceId );
if ( dspaceClass == H5S_SIMPLE )
{
// Get the dimensions
int rank = H5Sget_simple_extent_ndims( dspaceId );
ABCA_ASSERT( rank == 1,
"H5Sget_simple_extent_ndims() must be 1." );
hsize_t hdim = 0;
rank = H5Sget_simple_extent_dims( dspaceId, &hdim, NULL );
Dimensions dims;
std::string dimName = iName + ".dims";
if ( H5Aexists( iParent, dimName.c_str() ) )
{
ReadDimensions( iParent, dimName, dims );
}
else
{
dims.setRank(1);
dims[0] = hdim / iDataType.getExtent();
}
ABCA_ASSERT( dims.numPoints() > 0,
"Degenerate dims in Dataset read" );
// Create a buffer into which we shall read.
ret = AbcA::AllocateArraySample( iDataType, dims );
assert( ret->getData() );
// And... read into it.
herr_t status = H5Dread( dsetId, iNativeType,
H5S_ALL, H5S_ALL, H5P_DEFAULT,
const_cast<void*>( ret->getData() ) );
ABCA_ASSERT( status >= 0, "H5Dread() failed." );
}
else if ( dspaceClass == H5S_NULL )
{
Dimensions dims;
std::string dimName = iName + ".dims";
if ( H5Aexists( iParent, dimName.c_str() ) )
{
ReadDimensions( iParent, dimName, dims );
ABCA_ASSERT( dims.rank() > 0,
"Degenerate rank in Dataset read" );
// Num points should be zero here.
ABCA_ASSERT( dims.numPoints() == 0,
"Expecting zero points in dimensions" );
}
else
{
dims.setRank(1);
dims[0] = 0;
}
ret = AbcA::AllocateArraySample( iDataType, dims );
}
else
{
ABCA_THROW( "Unexpected scalar dataspace encountered." );
}
// Store if there is a cache.
if ( foundDigest && iCache )
{
AbcA::ReadArraySampleID stored = iCache->store( key, ret );
if ( stored )
{
return stored.getSample();
}
}
// Otherwise, just leave! ArraySamplePtr returned by AllocateArraySample
// already has fancy-dan deleter built in.
// I REALLY LOVE SMART PTRS.
return ret;
}