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New video capture implementation using WinRT Media APIs for UWP app. Due to the strict permission policy of UWP, device enumeration and open should be done via new WinRT APIs and to get permission from users, it will invoke permission dialog on UI. Strictly saying, this implementation is not a part of MediaFoundation but structurally it's very similar to MediaFoundation API. So we can avoid some code duplication by adding this implementation into MediaFoundation plugin. This implementation requires UniversalApiContract version >= 6.0 which is part of Windows 10 version 1803 (Redstone 4) Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/merge_requests/1241>
168 lines
6.9 KiB
C++
168 lines
6.9 KiB
C++
// MIT License
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//
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// Copyright (c) 2016 Microsoft Corporation
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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// THE SOFTWARE.
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// Source taken from https://github.com/microsoft/MixedRealityCompanionKit
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#pragma once
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#include <wrl.h>
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#include <wrl\async.h>
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#include <Windows.System.Threading.h>
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#include <functional>
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template <typename TDelegate, typename TOperation, typename TLambda>
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HRESULT StartAsyncThen(_In_ TOperation* pOperation, _In_ TLambda&& tFunc)
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{
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if (nullptr == pOperation)
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{
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return E_INVALIDARG;
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}
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auto spCallback = Microsoft::WRL::Callback<TDelegate>(
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[tFunc](_In_ TOperation* pOperation, _In_ AsyncStatus status) -> HRESULT
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{
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HRESULT hr = S_OK;
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// wrap the operation
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if (status != AsyncStatus::Completed)
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{
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Microsoft::WRL::ComPtr<TOperation> spOperation(pOperation);
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Microsoft::WRL::ComPtr<IAsyncInfo> spAsyncInfo;
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hr = spOperation.As(&spAsyncInfo);
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if (SUCCEEDED(hr))
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{
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spAsyncInfo->get_ErrorCode(&hr);
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}
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}
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return tFunc(hr, pOperation, status);
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});
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// start
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return (nullptr != spCallback) ? pOperation->put_Completed(spCallback.Get()) : E_OUTOFMEMORY;
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}
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template <typename TLambda>
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HRESULT StartAsyncThen(_In_ ABI::Windows::Foundation::IAsyncAction* pOperation, _In_ TLambda&& tFunc)
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{
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return StartAsyncThen<ABI::Windows::Foundation::IAsyncActionCompletedHandler, ABI::Windows::Foundation::IAsyncAction>(pOperation, static_cast<TLambda&&>(tFunc));
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}
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template <typename TProgress, typename TLambda>
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HRESULT StartAsyncThen(_In_ ABI::Windows::Foundation::IAsyncActionWithProgress<TProgress>* pOperation, _In_ TLambda&& tFunc)
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{
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return StartAsyncThen<ABI::Windows::Foundation::IAsyncActionWithProgressCompletedHandler<TProgress>, Windows::Foundation::IAsyncActionWithProgress<TProgress>>(pOperation, static_cast<TLambda&&>(tFunc));
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}
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template <typename TResult, typename TLambda>
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HRESULT StartAsyncThen(_In_ ABI::Windows::Foundation::IAsyncOperation<TResult>* pOperation, _In_ TLambda&& tFunc)
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{
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return StartAsyncThen<ABI::Windows::Foundation::IAsyncOperationCompletedHandler<TResult>, ABI::Windows::Foundation::IAsyncOperation<TResult>>(pOperation, static_cast<TLambda&&>(tFunc));
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}
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template <typename TResult, typename TProgress, typename TLambda>
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HRESULT StartAsyncThen(_In_ ABI::Windows::Foundation::IAsyncOperationWithProgress<TResult, TProgress>* pOperation, _In_ TLambda&& tFunc)
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{
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return StartAsyncThen<ABI::Windows::Foundation::IAsyncOperationWithProgressCompletedHandler<TResult, TProgress>, ABI::Windows::Foundation::IAsyncOperationWithProgress<TResult, TProgress>>(pOperation, static_cast<TLambda&&>(tFunc));
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}
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// eg. TOperation = IAsyncOperationWithProgress<UINT32, UINT32>
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// eg. THandler = IAsyncOperationWithProgressCompletedHandler<UINT, UINT>
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template<typename TOperation, typename THandler>
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class AsyncEventDelegate
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: public Microsoft::WRL::RuntimeClass
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< Microsoft::WRL::RuntimeClassFlags<Microsoft::WRL::RuntimeClassType::Delegate>
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, THandler
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, Microsoft::WRL::FtmBase >
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{
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public:
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AsyncEventDelegate()
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: _completedEvent(CreateEventEx(nullptr, nullptr, 0, EVENT_ALL_ACCESS))
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{
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ComPtr<AsyncEventDelegate> spThis(this);
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auto lambda = ([this, spThis](_In_ HRESULT hr, _In_ TOperation* pOperation)
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{
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SetEvent(_completedEvent.Get());
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});
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_func = std::move(lambda);
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}
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STDMETHOD(Invoke)(
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_In_ TOperation* pOperation,
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_In_ AsyncStatus status)
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{
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HRESULT hr = S_OK;
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// if we completed successfully, then there is no need for getting hresult
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if (status != AsyncStatus::Completed)
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{
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Microsoft::WRL::ComPtr<TOperation> spOperation(pOperation);
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Microsoft::WRL::ComPtr<IAsyncInfo> spAsyncInfo;
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if (SUCCEEDED(spOperation.As(&spAsyncInfo)))
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{
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spAsyncInfo->get_ErrorCode(&hr);
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}
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}
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_func(hr, pOperation);
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return S_OK;
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}
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STDMETHOD(SyncWait)(_In_ TOperation* pOperation, _In_ DWORD dwMilliseconds)
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{
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HRESULT hr = pOperation->put_Completed(this);
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if (FAILED(hr))
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{
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return hr;
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}
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DWORD dwWait = WaitForSingleObjectEx(_completedEvent.Get(), dwMilliseconds, TRUE);
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if (WAIT_IO_COMPLETION == dwWait || WAIT_OBJECT_0 == dwWait)
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return S_OK;
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return HRESULT_FROM_WIN32(GetLastError());
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}
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private:
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std::function<void(HRESULT, TOperation*)> _func;
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Microsoft::WRL::Wrappers::Event _completedEvent;
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};
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template <typename TOperation, typename THandler>
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HRESULT SyncWait(_In_ TOperation* pOperation, _In_ DWORD dwMilliseconds)
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{
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auto spCallback = Microsoft::WRL::Make<AsyncEventDelegate<TOperation, THandler>>();
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return spCallback->SyncWait(pOperation, dwMilliseconds);
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}
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template <typename TResult>
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HRESULT SyncWait(_In_ ABI::Windows::Foundation::IAsyncAction* pOperation, _In_ DWORD dwMilliseconds = INFINITE)
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{
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return SyncWait<ABI::Windows::Foundation::IAsyncAction, ABI::Windows::Foundation::IAsyncActionCompletedHandler>(pOperation, dwMilliseconds);
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}
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template <typename TResult>
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HRESULT SyncWait(_In_ ABI::Windows::Foundation::IAsyncOperation<TResult>* pOperation, _In_ DWORD dwMilliseconds = INFINITE)
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{
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return SyncWait<ABI::Windows::Foundation::IAsyncOperation<TResult>, ABI::Windows::Foundation::IAsyncOperationCompletedHandler<TResult>>(pOperation, dwMilliseconds);
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}
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template <typename TResult, typename TProgress>
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HRESULT SyncWait(_In_ ABI::Windows::Foundation::IAsyncOperationWithProgress<TResult, TProgress>* pOperation, _In_ DWORD dwMilliseconds = INFINITE)
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{
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return SyncWait<ABI::Windows::Foundation::IAsyncOperationWithProgress<TResult, TProgress>, ABI::Windows::Foundation::IAsyncOperationWithProgressCompletedHandler<TResult, TProgress>>(pOperation, dwMilliseconds);
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}
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