| /**************************************************************************** |
| ** |
| ** Copyright (C) 2017 The Qt Company Ltd. |
| ** Contact: https://www.qt.io/licensing/ |
| ** |
| ** This file is part of the Qt Toolkit. |
| ** |
| ** $QT_BEGIN_LICENSE:LGPL$ |
| ** Commercial License Usage |
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| ** GNU Lesser General Public License Usage |
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| ** General Public License version 3 as published by the Free Software |
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| ** |
| ** GNU General Public License Usage |
| ** Alternatively, this file may be used under the terms of the GNU |
| ** General Public License version 2.0 or (at your option) the GNU General |
| ** Public license version 3 or any later version approved by the KDE Free |
| ** Qt Foundation. The licenses are as published by the Free Software |
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| ** $QT_END_LICENSE$ |
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| ****************************************************************************/ |
| |
| #include "directshowbasefilter.h" |
| |
| #include "directshowpinenum.h" |
| |
| #include <mutex> |
| |
| QT_BEGIN_NAMESPACE |
| |
| DirectShowBaseFilter::DirectShowBaseFilter() |
| = default; |
| |
| DirectShowBaseFilter::~DirectShowBaseFilter() |
| { |
| if (m_clock) { |
| m_clock->Release(); |
| m_clock = nullptr; |
| } |
| } |
| |
| HRESULT DirectShowBaseFilter::GetClassID(CLSID *pClassID) |
| { |
| *pClassID = CLSID_NULL; |
| return S_OK; |
| } |
| |
| HRESULT DirectShowBaseFilter::NotifyEvent(long eventCode, LONG_PTR eventParam1, LONG_PTR eventParam2) |
| { |
| IMediaEventSink *sink = m_sink; |
| if (sink) { |
| if (eventCode == EC_COMPLETE) |
| eventParam2 = (LONG_PTR)(IBaseFilter*)this; |
| |
| return sink->Notify(eventCode, eventParam1, eventParam2); |
| } |
| return E_NOTIMPL; |
| } |
| |
| HRESULT DirectShowBaseFilter::Run(REFERENCE_TIME tStart) |
| { |
| Q_UNUSED(tStart) |
| const std::lock_guard<QRecursiveMutex> locker(m_mutex); |
| |
| m_startTime = tStart; |
| |
| if (m_state == State_Stopped){ |
| HRESULT hr = Pause(); |
| if (FAILED(hr)) |
| return hr; |
| } |
| |
| m_state = State_Running; |
| |
| return S_OK; |
| } |
| |
| HRESULT DirectShowBaseFilter::Pause() |
| { |
| const std::lock_guard<QRecursiveMutex> locker(m_mutex); |
| |
| if (m_state == State_Stopped) { |
| const QList<DirectShowPin *> pinList = pins(); |
| for (DirectShowPin *pin : pinList) { |
| if (pin->isConnected()) { |
| HRESULT hr = pin->setActive(true); |
| if (FAILED(hr)) |
| return hr; |
| } |
| } |
| } |
| |
| m_state = State_Paused; |
| |
| return S_OK; |
| } |
| |
| HRESULT DirectShowBaseFilter::Stop() |
| { |
| const std::lock_guard<QRecursiveMutex> locker(m_mutex); |
| |
| HRESULT hr = S_OK; |
| |
| if (m_state != State_Stopped) { |
| const QList<DirectShowPin *> pinList = pins(); |
| for (DirectShowPin *pin : pinList) { |
| if (pin->isConnected()) { |
| HRESULT hrTmp = pin->setActive(false); |
| if (FAILED(hrTmp) && SUCCEEDED(hr)) |
| hr = hrTmp; |
| } |
| } |
| } |
| |
| m_state = State_Stopped; |
| |
| return hr; |
| } |
| |
| HRESULT DirectShowBaseFilter::GetState(DWORD dwMilliSecsTimeout, FILTER_STATE *pState) |
| { |
| Q_UNUSED(dwMilliSecsTimeout); |
| |
| if (!pState) { |
| return E_POINTER; |
| } else { |
| const std::lock_guard<QRecursiveMutex> locker(m_mutex); |
| |
| *pState = m_state; |
| |
| return S_OK; |
| } |
| } |
| |
| HRESULT DirectShowBaseFilter::SetSyncSource(IReferenceClock *pClock) |
| { |
| const std::lock_guard<QRecursiveMutex> locker(m_mutex); |
| |
| if (m_clock) |
| m_clock->Release(); |
| |
| m_clock = pClock; |
| |
| if (m_clock) |
| m_clock->AddRef(); |
| |
| return S_OK; |
| } |
| |
| HRESULT DirectShowBaseFilter::GetSyncSource(IReferenceClock **ppClock) |
| { |
| if (!ppClock) |
| return E_POINTER; |
| |
| if (!m_clock) { |
| *ppClock = nullptr; |
| return S_FALSE; |
| } |
| m_clock->AddRef(); |
| *ppClock = m_clock; |
| return S_OK; |
| } |
| |
| HRESULT DirectShowBaseFilter::EnumPins(IEnumPins **ppEnum) |
| { |
| if (!ppEnum) |
| return E_POINTER; |
| *ppEnum = new DirectShowPinEnum(this); |
| return S_OK; |
| } |
| |
| HRESULT DirectShowBaseFilter::FindPin(LPCWSTR Id, IPin **ppPin) |
| { |
| if (!ppPin || !Id) |
| return E_POINTER; |
| |
| const std::lock_guard<QRecursiveMutex> locker(m_mutex); |
| const QList<DirectShowPin *> pinList = pins(); |
| for (DirectShowPin *pin : pinList) { |
| if (pin->name() == QStringView(Id)) { |
| pin->AddRef(); |
| *ppPin = pin; |
| return S_OK; |
| } |
| } |
| |
| *ppPin = nullptr; |
| return VFW_E_NOT_FOUND; |
| } |
| |
| HRESULT DirectShowBaseFilter::JoinFilterGraph(IFilterGraph *pGraph, LPCWSTR pName) |
| { |
| const std::lock_guard<QRecursiveMutex> locker(m_mutex); |
| |
| m_filterName = QString::fromWCharArray(pName); |
| m_graph = pGraph; |
| m_sink = nullptr; |
| |
| if (m_graph) { |
| if (SUCCEEDED(m_graph->QueryInterface(IID_PPV_ARGS(&m_sink)))) |
| m_sink->Release(); // we don't keep a reference on it |
| } |
| |
| return S_OK; |
| } |
| |
| HRESULT DirectShowBaseFilter::QueryFilterInfo(FILTER_INFO *pInfo) |
| { |
| if (!pInfo) |
| return E_POINTER; |
| |
| QString name = m_filterName; |
| |
| if (name.length() >= MAX_FILTER_NAME) |
| name.truncate(MAX_FILTER_NAME - 1); |
| |
| int length = name.toWCharArray(pInfo->achName); |
| pInfo->achName[length] = '\0'; |
| |
| if (m_graph) |
| m_graph->AddRef(); |
| |
| pInfo->pGraph = m_graph; |
| |
| return S_OK; |
| } |
| |
| HRESULT DirectShowBaseFilter::QueryVendorInfo(LPWSTR *pVendorInfo) |
| { |
| Q_UNUSED(pVendorInfo); |
| return E_NOTIMPL; |
| } |
| |
| QT_END_NAMESPACE |