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73 lines
1.9 KiB
C++
73 lines
1.9 KiB
C++
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// Copyright 2017 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include "base/win/winrt_storage_util.h"
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#include <robuffer.h>
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#include <string.h>
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#include <wrl/client.h>
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#include "base/strings/string_util.h"
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#include "base/win/core_winrt_util.h"
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#include "base/win/scoped_hstring.h"
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namespace base {
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namespace win {
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using IBuffer = ABI::Windows::Storage::Streams::IBuffer;
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HRESULT GetPointerToBufferData(IBuffer* buffer, uint8_t** out, UINT32* length) {
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*out = nullptr;
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Microsoft::WRL::ComPtr<Windows::Storage::Streams::IBufferByteAccess>
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buffer_byte_access;
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HRESULT hr = buffer->QueryInterface(IID_PPV_ARGS(&buffer_byte_access));
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if (FAILED(hr))
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return hr;
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hr = buffer->get_Length(length);
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if (FAILED(hr))
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return hr;
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// Lifetime of the pointing buffer is controlled by the buffer object.
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return buffer_byte_access->Buffer(out);
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}
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HRESULT CreateIBufferFromData(const uint8_t* data,
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UINT32 length,
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Microsoft::WRL::ComPtr<IBuffer>* buffer) {
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*buffer = nullptr;
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Microsoft::WRL::ComPtr<ABI::Windows::Storage::Streams::IBufferFactory>
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buffer_factory;
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HRESULT hr = base::win::GetActivationFactory<
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ABI::Windows::Storage::Streams::IBufferFactory,
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RuntimeClass_Windows_Storage_Streams_Buffer>(&buffer_factory);
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if (FAILED(hr))
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return hr;
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Microsoft::WRL::ComPtr<IBuffer> internal_buffer;
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hr = buffer_factory->Create(length, internal_buffer.GetAddressOf());
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if (FAILED(hr))
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return hr;
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hr = internal_buffer->put_Length(length);
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if (FAILED(hr))
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return hr;
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uint8_t* p_buffer_data;
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hr = GetPointerToBufferData(internal_buffer.Get(), &p_buffer_data, &length);
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if (FAILED(hr))
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return hr;
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memcpy(p_buffer_data, data, length);
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*buffer = std::move(internal_buffer);
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return S_OK;
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}
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} // namespace win
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} // namespace base
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