117 lines
3.0 KiB
C++
117 lines
3.0 KiB
C++
// Copyright (c) 2016-2018 Easy2D - Nomango
|
|
//
|
|
// Permission is hereby granted, free of charge, to any person obtaining a copy
|
|
// of this software and associated documentation files (the "Software"), to deal
|
|
// in the Software without restriction, including without limitation the rights
|
|
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
|
// copies of the Software, and to permit persons to whom the Software is
|
|
// furnished to do so, subject to the following conditions:
|
|
//
|
|
// The above copyright notice and this permission notice shall be included in
|
|
// all copies or substantial portions of the Software.
|
|
//
|
|
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
|
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
|
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
|
// THE SOFTWARE.
|
|
|
|
#include "..\e2dimpl.h"
|
|
|
|
e2d::MediaAsyncCallback::MediaAsyncCallback(HWND hwnd, IMFMediaSession * pSession, HANDLE hCloseEvent)
|
|
: m_pSession(pSession)
|
|
, m_hCloseEvent(hCloseEvent)
|
|
, m_hwnd(hwnd)
|
|
{
|
|
}
|
|
|
|
HRESULT e2d::MediaAsyncCallback::QueryInterface(REFIID riid, void** ppv)
|
|
{
|
|
static const QITAB qit[] =
|
|
{
|
|
QITABENT(MediaAsyncCallback, IMFAsyncCallback),
|
|
{ 0 }
|
|
};
|
|
return QISearch(this, qit, riid, ppv);
|
|
}
|
|
|
|
ULONG e2d::MediaAsyncCallback::AddRef()
|
|
{
|
|
return InterlockedIncrement(&m_nRefCount);
|
|
}
|
|
|
|
ULONG e2d::MediaAsyncCallback::Release()
|
|
{
|
|
ULONG uCount = InterlockedDecrement(&m_nRefCount);
|
|
if (uCount == 0)
|
|
{
|
|
delete this;
|
|
}
|
|
return uCount;
|
|
}
|
|
|
|
HRESULT e2d::MediaAsyncCallback::GetParameters(DWORD *, DWORD *)
|
|
{
|
|
// Implementation of this method is optional.
|
|
return E_NOTIMPL;
|
|
}
|
|
|
|
HRESULT e2d::MediaAsyncCallback::Invoke(IMFAsyncResult *pResult)
|
|
{
|
|
MediaEventType meType = MEUnknown; // Event type
|
|
|
|
IMFMediaEvent *pEvent = NULL;
|
|
|
|
// Get the event from the event queue.
|
|
HRESULT hr = m_pSession->EndGetEvent(pResult, &pEvent);
|
|
if (FAILED(hr))
|
|
{
|
|
goto done;
|
|
}
|
|
|
|
// Get the event type.
|
|
hr = pEvent->GetType(&meType);
|
|
if (FAILED(hr))
|
|
{
|
|
goto done;
|
|
}
|
|
|
|
if (meType == MESessionClosed)
|
|
{
|
|
// The session was closed.
|
|
// The application is waiting on the m_hCloseEvent event handle.
|
|
SetEvent(m_hCloseEvent);
|
|
}
|
|
else
|
|
{
|
|
// For all other events, get the next event in the queue.
|
|
hr = m_pSession->BeginGetEvent(this, NULL);
|
|
if (FAILED(hr))
|
|
{
|
|
goto done;
|
|
}
|
|
}
|
|
|
|
// Check the application state.
|
|
|
|
// If a call to IMFMediaSession::Close is pending, it means the
|
|
// application is waiting on the m_hCloseEvent event and
|
|
// the application's message loop is blocked.
|
|
|
|
// Otherwise, post a private window message to the application.
|
|
|
|
//if (m_state != Closing)
|
|
{
|
|
// Leave a reference count on the event.
|
|
pEvent->AddRef();
|
|
|
|
::PostMessage(m_hwnd, WM_APP + 1, (WPARAM)pEvent, (LPARAM)meType);
|
|
}
|
|
|
|
done:
|
|
SafeRelease(pEvent);
|
|
return S_OK;
|
|
}
|