Chris@16: //
Chris@16: // detail/impl/buffer_sequence_adapter.ipp
Chris@16: // ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Chris@16: //
Chris@101: // Copyright (c) 2003-2015 Christopher M. Kohlhoff (chris at kohlhoff dot com)
Chris@16: //
Chris@16: // Distributed under the Boost Software License, Version 1.0. (See accompanying
Chris@16: // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
Chris@16: //
Chris@16: 
Chris@16: #ifndef BOOST_ASIO_DETAIL_IMPL_BUFFER_SEQUENCE_ADAPTER_IPP
Chris@16: #define BOOST_ASIO_DETAIL_IMPL_BUFFER_SEQUENCE_ADAPTER_IPP
Chris@16: 
Chris@16: #if defined(_MSC_VER) && (_MSC_VER >= 1200)
Chris@16: # pragma once
Chris@16: #endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
Chris@16: 
Chris@16: #include <boost/asio/detail/config.hpp>
Chris@16: 
Chris@16: #if defined(BOOST_ASIO_WINDOWS_RUNTIME)
Chris@16: 
Chris@16: #include <robuffer.h>
Chris@16: #include <windows.storage.streams.h>
Chris@16: #include <wrl/implements.h>
Chris@16: #include <boost/asio/detail/buffer_sequence_adapter.hpp>
Chris@16: 
Chris@16: #include <boost/asio/detail/push_options.hpp>
Chris@16: 
Chris@16: namespace boost {
Chris@16: namespace asio {
Chris@16: namespace detail {
Chris@16: 
Chris@16: class winrt_buffer_impl :
Chris@16:   public Microsoft::WRL::RuntimeClass<
Chris@16:     Microsoft::WRL::RuntimeClassFlags<
Chris@16:       Microsoft::WRL::RuntimeClassType::WinRtClassicComMix>,
Chris@16:     ABI::Windows::Storage::Streams::IBuffer,
Chris@16:     Windows::Storage::Streams::IBufferByteAccess>
Chris@16: {
Chris@16: public:
Chris@16:   explicit winrt_buffer_impl(const boost::asio::const_buffer& b)
Chris@16:   {
Chris@16:     bytes_ = const_cast<byte*>(boost::asio::buffer_cast<const byte*>(b));
Chris@16:     length_ = boost::asio::buffer_size(b);
Chris@16:     capacity_ = boost::asio::buffer_size(b);
Chris@16:   }
Chris@16: 
Chris@16:   explicit winrt_buffer_impl(const boost::asio::mutable_buffer& b)
Chris@16:   {
Chris@16:     bytes_ = const_cast<byte*>(boost::asio::buffer_cast<const byte*>(b));
Chris@16:     length_ = 0;
Chris@16:     capacity_ = boost::asio::buffer_size(b);
Chris@16:   }
Chris@16: 
Chris@16:   ~winrt_buffer_impl()
Chris@16:   {
Chris@16:   }
Chris@16: 
Chris@16:   STDMETHODIMP Buffer(byte** value)
Chris@16:   {
Chris@16:     *value = bytes_;
Chris@16:     return S_OK;
Chris@16:   }
Chris@16: 
Chris@16:   STDMETHODIMP get_Capacity(UINT32* value)
Chris@16:   {
Chris@16:     *value = capacity_;
Chris@16:     return S_OK;
Chris@16:   }
Chris@16: 
Chris@16:   STDMETHODIMP get_Length(UINT32 *value)
Chris@16:   {
Chris@16:     *value = length_;
Chris@16:     return S_OK;
Chris@16:   }
Chris@16: 
Chris@16:   STDMETHODIMP put_Length(UINT32 value)
Chris@16:   {
Chris@16:     if (value > capacity_)
Chris@16:       return E_INVALIDARG;
Chris@16:     length_ = value;
Chris@16:     return S_OK;
Chris@16:   }
Chris@16: 
Chris@16: private:
Chris@16:   byte* bytes_;
Chris@16:   UINT32 length_;
Chris@16:   UINT32 capacity_;
Chris@16: };
Chris@16: 
Chris@16: void buffer_sequence_adapter_base::init_native_buffer(
Chris@16:     buffer_sequence_adapter_base::native_buffer_type& buf,
Chris@16:     const boost::asio::mutable_buffer& buffer)
Chris@16: {
Chris@16:   std::memset(&buf, 0, sizeof(native_buffer_type));
Chris@16:   Microsoft::WRL::ComPtr<IInspectable> insp
Chris@16:     = Microsoft::WRL::Make<winrt_buffer_impl>(buffer);
Chris@16:   buf = reinterpret_cast<Windows::Storage::Streams::IBuffer^>(insp.Get());
Chris@16: }
Chris@16: 
Chris@16: void buffer_sequence_adapter_base::init_native_buffer(
Chris@16:     buffer_sequence_adapter_base::native_buffer_type& buf,
Chris@16:     const boost::asio::const_buffer& buffer)
Chris@16: {
Chris@16:   std::memset(&buf, 0, sizeof(native_buffer_type));
Chris@16:   Microsoft::WRL::ComPtr<IInspectable> insp
Chris@16:     = Microsoft::WRL::Make<winrt_buffer_impl>(buffer);
Chris@16:   Platform::Object^ buf_obj = reinterpret_cast<Platform::Object^>(insp.Get());
Chris@16:   buf = reinterpret_cast<Windows::Storage::Streams::IBuffer^>(insp.Get());
Chris@16: }
Chris@16: 
Chris@16: } // namespace detail
Chris@16: } // namespace asio
Chris@16: } // namespace boost
Chris@16: 
Chris@16: #include <boost/asio/detail/pop_options.hpp>
Chris@16: 
Chris@16: #endif // defined(BOOST_ASIO_WINDOWS_RUNTIME)
Chris@16: 
Chris@16: #endif // BOOST_ASIO_DETAIL_IMPL_BUFFER_SEQUENCE_ADAPTER_IPP