winrt_storage_util.cc 1.9 KB

1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253545556575859606162636465666768697071727374
  1. // Copyright 2017 The Chromium Authors. All rights reserved.
  2. // Use of this source code is governed by a BSD-style license that can be
  3. // found in the LICENSE file.
  4. #include "base/win/winrt_storage_util.h"
  5. #include <robuffer.h>
  6. #include <string.h>
  7. #include <wrl/client.h>
  8. #include <utility>
  9. #include "base/strings/string_util.h"
  10. #include "base/win/core_winrt_util.h"
  11. #include "base/win/scoped_hstring.h"
  12. namespace base {
  13. namespace win {
  14. using IBuffer = ABI::Windows::Storage::Streams::IBuffer;
  15. HRESULT GetPointerToBufferData(IBuffer* buffer, uint8_t** out, UINT32* length) {
  16. *out = nullptr;
  17. Microsoft::WRL::ComPtr<Windows::Storage::Streams::IBufferByteAccess>
  18. buffer_byte_access;
  19. HRESULT hr = buffer->QueryInterface(IID_PPV_ARGS(&buffer_byte_access));
  20. if (FAILED(hr))
  21. return hr;
  22. hr = buffer->get_Length(length);
  23. if (FAILED(hr))
  24. return hr;
  25. // Lifetime of the pointing buffer is controlled by the buffer object.
  26. return buffer_byte_access->Buffer(out);
  27. }
  28. HRESULT CreateIBufferFromData(const uint8_t* data,
  29. UINT32 length,
  30. Microsoft::WRL::ComPtr<IBuffer>* buffer) {
  31. *buffer = nullptr;
  32. Microsoft::WRL::ComPtr<ABI::Windows::Storage::Streams::IBufferFactory>
  33. buffer_factory;
  34. HRESULT hr = base::win::GetActivationFactory<
  35. ABI::Windows::Storage::Streams::IBufferFactory,
  36. RuntimeClass_Windows_Storage_Streams_Buffer>(&buffer_factory);
  37. if (FAILED(hr))
  38. return hr;
  39. Microsoft::WRL::ComPtr<IBuffer> internal_buffer;
  40. hr = buffer_factory->Create(length, &internal_buffer);
  41. if (FAILED(hr))
  42. return hr;
  43. hr = internal_buffer->put_Length(length);
  44. if (FAILED(hr))
  45. return hr;
  46. uint8_t* p_buffer_data;
  47. hr = GetPointerToBufferData(internal_buffer.Get(), &p_buffer_data, &length);
  48. if (FAILED(hr))
  49. return hr;
  50. memcpy(p_buffer_data, data, length);
  51. *buffer = std::move(internal_buffer);
  52. return S_OK;
  53. }
  54. } // namespace win
  55. } // namespace base