diff options
Diffstat (limited to 'src/plugins/directshow/common/directshowsamplegrabber.cpp')
| -rw-r--r-- | src/plugins/directshow/common/directshowsamplegrabber.cpp | 197 |
1 files changed, 0 insertions, 197 deletions
diff --git a/src/plugins/directshow/common/directshowsamplegrabber.cpp b/src/plugins/directshow/common/directshowsamplegrabber.cpp deleted file mode 100644 index a9e74f9db..000000000 --- a/src/plugins/directshow/common/directshowsamplegrabber.cpp +++ /dev/null @@ -1,197 +0,0 @@ -/**************************************************************************** -** -** Copyright (C) 2016 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 -** Licensees holding valid commercial Qt licenses may use this file in -** accordance with the commercial license agreement provided with the -** Software or, alternatively, in accordance with the terms contained in -** a written agreement between you and The Qt Company. For licensing terms -** and conditions see https://www.qt.io/terms-conditions. For further -** information use the contact form at https://www.qt.io/contact-us. -** -** GNU Lesser General Public License Usage -** Alternatively, this file may be used under the terms of the GNU Lesser -** General Public License version 3 as published by the Free Software -** Foundation and appearing in the file LICENSE.LGPL3 included in the -** packaging of this file. Please review the following information to -** ensure the GNU Lesser General Public License version 3 requirements -** will be met: https://www.gnu.org/licenses/lgpl-3.0.html. -** -** 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 -** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3 -** included in the packaging of this file. Please review the following -** information to ensure the GNU General Public License requirements will -** be met: https://www.gnu.org/licenses/gpl-2.0.html and -** https://www.gnu.org/licenses/gpl-3.0.html. -** -** $QT_END_LICENSE$ -** -****************************************************************************/ - -#include "directshowsamplegrabber.h" - -#include "directshowglobal.h" -#include "directshowutils.h" - - -QT_BEGIN_NAMESPACE - -// Previously contained in <qedit.h>. -static const IID iID_ISampleGrabber = { 0x6B652FFF, 0x11FE, 0x4fce, { 0x92, 0xAD, 0x02, 0x66, 0xB5, 0xD7, 0xC7, 0x8F } }; -static const CLSID cLSID_SampleGrabber = { 0xC1F400A0, 0x3F08, 0x11d3, { 0x9F, 0x0B, 0x00, 0x60, 0x08, 0x03, 0x9E, 0x37 } }; - -class SampleGrabberCallbackPrivate : public ISampleGrabberCB -{ - Q_DISABLE_COPY(SampleGrabberCallbackPrivate) -public: - explicit SampleGrabberCallbackPrivate(DirectShowSampleGrabber *grabber) - : m_ref(1) - , m_grabber(grabber) - { } - - virtual ~SampleGrabberCallbackPrivate() = default; - - STDMETHODIMP_(ULONG) AddRef() override - { - return InterlockedIncrement(&m_ref); - } - - STDMETHODIMP_(ULONG) Release() override - { - ULONG ref = InterlockedDecrement(&m_ref); - if (ref == 0) - delete this; - return ref; - } - - STDMETHODIMP QueryInterface(REFIID riid, void **ppvObject) override - { - if (nullptr == ppvObject) - return E_POINTER; - - if (riid == IID_IUnknown /*__uuidof(IUnknown) */ ) { - AddRef(); - *ppvObject = static_cast<IUnknown *>(this); - return S_OK; - } - if (riid == IID_ISampleGrabberCB /*__uuidof(ISampleGrabberCB)*/ ) { - AddRef(); - *ppvObject = static_cast<ISampleGrabberCB *>(this); - return S_OK; - } - return E_NOTIMPL; - } - - STDMETHODIMP SampleCB(double time, IMediaSample *mediaSample) override - { - if (m_grabber) - Q_EMIT m_grabber->sampleAvailable(time, mediaSample); - - return S_OK; - } - - STDMETHODIMP BufferCB(double time, BYTE *buffer, long bufferLen) override - { - if (m_grabber) { - // Deep copy, the data might be modified or freed after the callback returns - QByteArray data(reinterpret_cast<const char *>(buffer), bufferLen); - Q_EMIT m_grabber->bufferAvailable(time, data); - } - return S_OK; - } - -private: - ULONG m_ref; - DirectShowSampleGrabber *m_grabber; -}; - -DirectShowSampleGrabber::DirectShowSampleGrabber(QObject *p) - : QObject(p) -{ - // Create sample grabber filter - HRESULT hr = CoCreateInstance(cLSID_SampleGrabber, nullptr, CLSCTX_INPROC, iID_ISampleGrabber, reinterpret_cast<void **>(&m_sampleGrabber)); - - if (FAILED(hr)) { - qCWarning(qtDirectShowPlugin, "Failed to create sample grabber"); - return; - } - - hr = m_sampleGrabber->QueryInterface(IID_IBaseFilter, reinterpret_cast<void **>(&m_filter)); - if (FAILED(hr)) - qCWarning(qtDirectShowPlugin, "Failed to get base filter interface"); -} - -DirectShowSampleGrabber::~DirectShowSampleGrabber() -{ - stop(); - SAFE_RELEASE(m_sampleGabberCb); - SAFE_RELEASE(m_filter); - SAFE_RELEASE(m_sampleGrabber); -} - -void DirectShowSampleGrabber::stop() -{ - if (!m_sampleGrabber) - return; - - if (FAILED(m_sampleGrabber->SetCallback(nullptr, static_cast<long>(m_callbackType)))) { - qCWarning(qtDirectShowPlugin, "Failed to stop sample grabber callback"); - return; - } -} - -bool DirectShowSampleGrabber::getConnectedMediaType(AM_MEDIA_TYPE *mediaType) -{ - Q_ASSERT(mediaType); - - if (!isValid()) - return false; - - if (FAILED(m_sampleGrabber->GetConnectedMediaType(mediaType))) { - qCWarning(qtDirectShowPlugin, "Failed to retrieve the connected media type"); - return false; - } - - return true; -} - -bool DirectShowSampleGrabber::setMediaType(const AM_MEDIA_TYPE *mediaType) -{ - Q_ASSERT(mediaType); - - if (FAILED(m_sampleGrabber->SetMediaType(mediaType))) { - qCWarning(qtDirectShowPlugin, "Failed to set media type"); - return false; - } - - return true; -} - -void DirectShowSampleGrabber::start(DirectShowSampleGrabber::CallbackMethod method, - bool oneShot, - bool bufferSamples) -{ - if (!m_sampleGrabber) - return; - - stop(); - - if (!m_sampleGabberCb) - m_sampleGabberCb = new SampleGrabberCallbackPrivate(this); - - m_callbackType = method; - m_sampleGrabber->SetCallback(m_sampleGabberCb, static_cast<long>(method)); - m_sampleGrabber->SetOneShot(oneShot); - m_sampleGrabber->SetBufferSamples(bufferSamples); -} - -QT_END_NAMESPACE |