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//
// detail/impl/buffer_sequence_adapter.ipp
// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
//
// Copyright (c) 2003-2018 Christopher M. Kohlhoff (chris at kohlhoff dot com)
//
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
//
#ifndef ASIO_DETAIL_IMPL_BUFFER_SEQUENCE_ADAPTER_IPP
#define ASIO_DETAIL_IMPL_BUFFER_SEQUENCE_ADAPTER_IPP
#if defined(_MSC_VER) && (_MSC_VER >= 1200)
# pragma once
#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
#include "asio/detail/config.hpp"
#if defined(ASIO_WINDOWS_RUNTIME)
#include <robuffer.h>
#include <windows.storage.streams.h>
#include <wrl/implements.h>
#include "asio/detail/buffer_sequence_adapter.hpp"
#include "asio/detail/push_options.hpp"
namespace asio {
namespace detail {
class winrt_buffer_impl :
public Microsoft::WRL::RuntimeClass<
Microsoft::WRL::RuntimeClassFlags<
Microsoft::WRL::RuntimeClassType::WinRtClassicComMix>,
ABI::Windows::Storage::Streams::IBuffer,
Windows::Storage::Streams::IBufferByteAccess>
{
public:
explicit winrt_buffer_impl(const asio::const_buffer& b)
{
bytes_ = const_cast<byte*>(static_cast<const byte*>(b.data()));
length_ = b.size();
capacity_ = b.size();
}
explicit winrt_buffer_impl(const asio::mutable_buffer& b)
{
bytes_ = static_cast<byte*>(b.data());
length_ = 0;
capacity_ = b.size();
}
~winrt_buffer_impl()
{
}
STDMETHODIMP Buffer(byte** value)
{
*value = bytes_;
return S_OK;
}
STDMETHODIMP get_Capacity(UINT32* value)
{
*value = capacity_;
return S_OK;
}
STDMETHODIMP get_Length(UINT32 *value)
{
*value = length_;
return S_OK;
}
STDMETHODIMP put_Length(UINT32 value)
{
if (value > capacity_)
return E_INVALIDARG;
length_ = value;
return S_OK;
}
private:
byte* bytes_;
UINT32 length_;
UINT32 capacity_;
};
void buffer_sequence_adapter_base::init_native_buffer(
buffer_sequence_adapter_base::native_buffer_type& buf,
const asio::mutable_buffer& buffer)
{
std::memset(&buf, 0, sizeof(native_buffer_type));
Microsoft::WRL::ComPtr<IInspectable> insp
= Microsoft::WRL::Make<winrt_buffer_impl>(buffer);
buf = reinterpret_cast<Windows::Storage::Streams::IBuffer^>(insp.Get());
}
void buffer_sequence_adapter_base::init_native_buffer(
buffer_sequence_adapter_base::native_buffer_type& buf,
const asio::const_buffer& buffer)
{
std::memset(&buf, 0, sizeof(native_buffer_type));
Microsoft::WRL::ComPtr<IInspectable> insp
= Microsoft::WRL::Make<winrt_buffer_impl>(buffer);
Platform::Object^ buf_obj = reinterpret_cast<Platform::Object^>(insp.Get());
buf = reinterpret_cast<Windows::Storage::Streams::IBuffer^>(insp.Get());
}
} // namespace detail
} // namespace asio
#include "asio/detail/pop_options.hpp"
#endif // defined(ASIO_WINDOWS_RUNTIME)
#endif // ASIO_DETAIL_IMPL_BUFFER_SEQUENCE_ADAPTER_IPP
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