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/*
* Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
#include "modules/desktop_capture/win/d3d_device.h"
#include <utility>
#include "modules/desktop_capture/win/desktop_capture_utils.h"
#include "rtc_base/logging.h"
namespace webrtc {
using Microsoft::WRL::ComPtr;
D3dDevice::D3dDevice() = default;
D3dDevice::D3dDevice(const D3dDevice& other) = default;
D3dDevice::D3dDevice(D3dDevice&& other) = default;
D3dDevice::~D3dDevice() = default;
bool D3dDevice::Initialize(const ComPtr<IDXGIAdapter>& adapter) {
dxgi_adapter_ = adapter;
if (!dxgi_adapter_) {
RTC_LOG(LS_WARNING) << "An empty IDXGIAdapter instance has been received.";
return false;
}
D3D_FEATURE_LEVEL feature_level;
// Default feature levels contain D3D 9.1 through D3D 11.0.
_com_error error = D3D11CreateDevice(
adapter.Get(), D3D_DRIVER_TYPE_UNKNOWN, nullptr,
D3D11_CREATE_DEVICE_BGRA_SUPPORT | D3D11_CREATE_DEVICE_SINGLETHREADED,
nullptr, 0, D3D11_SDK_VERSION, d3d_device_.GetAddressOf(), &feature_level,
context_.GetAddressOf());
if (error.Error() != S_OK || !d3d_device_ || !context_) {
RTC_LOG(LS_WARNING) << "D3D11CreateDevice returned: "
<< desktop_capture::utils::ComErrorToString(error);
return false;
}
if (feature_level < D3D_FEATURE_LEVEL_11_0) {
RTC_LOG(LS_WARNING)
<< "D3D11CreateDevice returned an instance without DirectX 11 support, "
<< "level " << feature_level << ". Following initialization may fail.";
// D3D_FEATURE_LEVEL_11_0 is not officially documented on MSDN to be a
// requirement of Dxgi duplicator APIs.
}
error = d3d_device_.As(&dxgi_device_);
if (error.Error() != S_OK || !dxgi_device_) {
RTC_LOG(LS_WARNING)
<< "ID3D11Device is not an implementation of IDXGIDevice, "
<< "this usually means the system does not support DirectX "
<< "11. Error received: "
<< desktop_capture::utils::ComErrorToString(error);
return false;
}
return true;
}
// static
std::vector<D3dDevice> D3dDevice::EnumDevices() {
ComPtr<IDXGIFactory1> factory;
_com_error error =
CreateDXGIFactory1(__uuidof(IDXGIFactory1),
reinterpret_cast<void**>(factory.GetAddressOf()));
if (error.Error() != S_OK || !factory) {
RTC_LOG(LS_WARNING) << "Cannot create IDXGIFactory1: "
<< desktop_capture::utils::ComErrorToString(error);
return std::vector<D3dDevice>();
}
std::vector<D3dDevice> result;
for (int i = 0;; i++) {
ComPtr<IDXGIAdapter> adapter;
error = factory->EnumAdapters(i, adapter.GetAddressOf());
if (error.Error() == S_OK) {
D3dDevice device;
if (device.Initialize(adapter)) {
result.push_back(std::move(device));
}
} else if (error.Error() == DXGI_ERROR_NOT_FOUND) {
break;
} else {
RTC_LOG(LS_WARNING)
<< "IDXGIFactory1::EnumAdapters returned an unexpected error: "
<< desktop_capture::utils::ComErrorToString(error);
}
}
return result;
}
} // namespace webrtc
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