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