117 lines
3.0 KiB
C++
117 lines
3.0 KiB
C++
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// Copyright (c) 2016-2018 Easy2D - Nomango
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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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#include "..\e2dimpl.h"
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e2d::MediaAsyncCallback::MediaAsyncCallback(HWND hwnd, IMFMediaSession * pSession, HANDLE hCloseEvent)
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: m_pSession(pSession)
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, m_hCloseEvent(hCloseEvent)
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, m_hwnd(hwnd)
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{
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}
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HRESULT e2d::MediaAsyncCallback::QueryInterface(REFIID riid, void** ppv)
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{
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static const QITAB qit[] =
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{
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QITABENT(MediaAsyncCallback, IMFAsyncCallback),
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{ 0 }
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};
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return QISearch(this, qit, riid, ppv);
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}
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ULONG e2d::MediaAsyncCallback::AddRef()
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{
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return InterlockedIncrement(&m_nRefCount);
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}
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ULONG e2d::MediaAsyncCallback::Release()
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{
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ULONG uCount = InterlockedDecrement(&m_nRefCount);
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if (uCount == 0)
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{
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delete this;
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}
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return uCount;
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}
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HRESULT e2d::MediaAsyncCallback::GetParameters(DWORD *, DWORD *)
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{
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// Implementation of this method is optional.
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return E_NOTIMPL;
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}
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HRESULT e2d::MediaAsyncCallback::Invoke(IMFAsyncResult *pResult)
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{
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MediaEventType meType = MEUnknown; // Event type
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IMFMediaEvent *pEvent = NULL;
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// Get the event from the event queue.
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HRESULT hr = m_pSession->EndGetEvent(pResult, &pEvent);
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if (FAILED(hr))
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{
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goto done;
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}
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// Get the event type.
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hr = pEvent->GetType(&meType);
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if (FAILED(hr))
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{
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goto done;
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}
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if (meType == MESessionClosed)
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{
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// The session was closed.
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// The application is waiting on the m_hCloseEvent event handle.
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SetEvent(m_hCloseEvent);
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}
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else
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{
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// For all other events, get the next event in the queue.
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hr = m_pSession->BeginGetEvent(this, NULL);
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if (FAILED(hr))
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{
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goto done;
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}
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}
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// Check the application state.
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// If a call to IMFMediaSession::Close is pending, it means the
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// application is waiting on the m_hCloseEvent event and
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// the application's message loop is blocked.
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// Otherwise, post a private window message to the application.
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//if (m_state != Closing)
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{
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// Leave a reference count on the event.
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pEvent->AddRef();
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::PostMessage(m_hwnd, WM_APP + 1, (WPARAM)pEvent, (LPARAM)meType);
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}
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done:
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SafeRelease(pEvent);
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return S_OK;
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}
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