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//-*****************************************************************************
//
// Copyright (c) 2012,
// Sony Pictures Imageworks Inc. and
// Industrial Light & Magic, a division of Lucasfilm Entertainment Company Ltd.
//
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// * Neither the name of Sony Pictures Imageworks, nor
// Industrial Light & Magic, nor the names of their contributors may be used
// to endorse or promote products derived from this software without specific
// prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
//-*****************************************************************************
#ifndef PyAlembic_PyTypedArraySampleConverter_h
#define PyAlembic_PyTypedArraySampleConverter_h
#include <Foundation.h>
#include <PyTypeBindingTraits.h>
namespace {
using namespace boost::python;
//-*****************************************************************************
template<class TPTraits>
struct converterMemcopyable
{
typedef TypeBindingTraits<TPTraits> binding_traits;
typedef typename binding_traits::python_array_type array_type;
typedef typename binding_traits::native_value_type value_type;
typedef Abc::TypedArraySample<TPTraits> samp_type;
typedef AbcU::shared_ptr<samp_type> samp_type_ptr;
// Conversion from FixedArray to ArraySample
void operator()( void *storage, array_type &iFixedArray, PyObject* obj_ptr )
{
BOOST_STATIC_ASSERT ( binding_traits::memCopyable );
new (storage) samp_type( &iFixedArray.direct_index( 0 ),
iFixedArray.len() );
}
// Converion from ArraySample to FixedArray
PyObject* operator()( const samp_type& iSamp )
{
BOOST_STATIC_ASSERT ( binding_traits::memCopyable );
// Create a fixed array.
typename manage_new_object::apply<array_type *>::type converter;
array_type* fixedArray = new array_type( iSamp.size() );
object obj( handle<>( converter( fixedArray ) ) );
// Memory layout is transparent between the arraysample type
// and the fixedarray type, we just do a memcopy.
memcpy( (void *) (&( *fixedArray )[0]),
(void *) (iSamp.get()),
iSamp.size() * sizeof( value_type ) );
return incref(obj.ptr());
}
// Converion from ArraySamplePtr to FixedArray
PyObject* operator()( const samp_type_ptr& iSampPtr )
{
BOOST_STATIC_ASSERT ( binding_traits::memCopyable );
if ( !iSampPtr )
{
Py_RETURN_NONE;
}
const samp_type& iSamp = *iSampPtr;
// Create a fixed array.
// The memcopy is avoided by storing a samp_type_ptr(i.e. a shared_ptr )
// as a resource handle in a fixedArray.
typename manage_new_object::apply<array_type *>::type converter;
array_type* fixedArray = new array_type(
static_cast<typename array_type::BaseType*>(
const_cast<value_type*>( iSamp.get() ) ),
iSamp.size(), 1, iSampPtr );
object obj( handle<>( converter( fixedArray ) ) );
return incref(obj.ptr());
}
};
template<class T, class U>
inline void copyArray( const T& iFixedArray, U* oArray )
{
for ( Py_ssize_t i = 0; i < iFixedArray.len(); ++i )
oArray[i] = iFixedArray.direct_index( i );
}
inline void copyArray( const PyImath::StringArray& iFixedArray,
std::string* oArray )
{
for (Py_ssize_t i = 0; i < iFixedArray.len(); ++i)
oArray[i] = iFixedArray.getitem_string(i);
}
inline void copyArray( const PyImath::WstringArray& iFixedArray,
std::wstring* oArray )
{
for (Py_ssize_t i = 0; i < iFixedArray.len(); ++i)
oArray[i] = iFixedArray.getitem_string(i);
}
//-*****************************************************************************
template<class TPTraits>
struct converterNonMemCopyable
{
typedef TypeBindingTraits<TPTraits> binding_traits;
typedef typename binding_traits::python_array_type array_type;
typedef typename TPTraits::value_type value_type;
typedef Abc::TypedArraySample<TPTraits> samp_type;
typedef AbcU::shared_ptr<samp_type> samp_type_ptr;
// Conversion from FixedArray to ArraySamplePtr
void operator()( void *storage, array_type &iFixedArray, PyObject* obj_ptr )
{
BOOST_STATIC_ASSERT ( !binding_traits::memCopyable );
const size_t len( iFixedArray.len() );
value_type* array = new value_type[len];
copyArray( iFixedArray, array );
new ( storage ) samp_type_ptr( new samp_type( array, len ),
AbcA::TArrayDeleter<value_type>() );
}
// Converion from ArraySample to FixedArray
PyObject* operator()( const samp_type& iSamp )
{
BOOST_STATIC_ASSERT ( !binding_traits::memCopyable );
// Create a fixed array.
typename manage_new_object::apply<array_type *>::type converter;
array_type* fixedArray = new array_type( iSamp.size() );
object obj( handle<>( converter( fixedArray ) ) );
// Memory layout is not transparent between the arraysample type
// and the fixedarray type, we need to do explicit conversions
// for array elements.
for( size_t i = 0; i < iSamp.size(); ++i )
fixedArray->direct_index( i ) = iSamp[i];
return incref(obj.ptr());
}
// Converion from ArraySamplePtr to FixedArray
PyObject* operator()( const samp_type_ptr& iSampPtr )
{
BOOST_STATIC_ASSERT ( !binding_traits::memCopyable );
if ( !iSampPtr )
{
Py_RETURN_NONE;
}
return ( *this )( *iSampPtr );
}
};
} // namespace
#endif
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