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/****************************************************************************
**
** 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 "samplegrabber.h"
#include "mfaudioprobecontrol.h"
STDMETHODIMP SampleGrabberCallback::QueryInterface(REFIID riid, void** ppv)
{
if (!ppv)
return E_POINTER;
if (riid == IID_IMFSampleGrabberSinkCallback) {
*ppv = static_cast<IMFSampleGrabberSinkCallback*>(this);
} else if (riid == IID_IMFClockStateSink) {
*ppv = static_cast<IMFClockStateSink*>(this);
} else if (riid == IID_IUnknown) {
*ppv = static_cast<IUnknown*>(this);
} else {
*ppv = NULL;
return E_NOINTERFACE;
}
AddRef();
return S_OK;
}
STDMETHODIMP_(ULONG) SampleGrabberCallback::AddRef()
{
return InterlockedIncrement(&m_cRef);
}
STDMETHODIMP_(ULONG) SampleGrabberCallback::Release()
{
ULONG cRef = InterlockedDecrement(&m_cRef);
if (cRef == 0) {
delete this;
}
return cRef;
}
// IMFClockStateSink methods.
STDMETHODIMP SampleGrabberCallback::OnClockStart(MFTIME hnsSystemTime, LONGLONG llClockStartOffset)
{
Q_UNUSED(hnsSystemTime);
Q_UNUSED(llClockStartOffset);
return S_OK;
}
STDMETHODIMP SampleGrabberCallback::OnClockStop(MFTIME hnsSystemTime)
{
Q_UNUSED(hnsSystemTime);
return S_OK;
}
STDMETHODIMP SampleGrabberCallback::OnClockPause(MFTIME hnsSystemTime)
{
Q_UNUSED(hnsSystemTime);
return S_OK;
}
STDMETHODIMP SampleGrabberCallback::OnClockRestart(MFTIME hnsSystemTime)
{
Q_UNUSED(hnsSystemTime);
return S_OK;
}
STDMETHODIMP SampleGrabberCallback::OnClockSetRate(MFTIME hnsSystemTime, float flRate)
{
Q_UNUSED(hnsSystemTime);
Q_UNUSED(flRate);
return S_OK;
}
// IMFSampleGrabberSink methods.
STDMETHODIMP SampleGrabberCallback::OnSetPresentationClock(IMFPresentationClock* pClock)
{
Q_UNUSED(pClock);
return S_OK;
}
STDMETHODIMP SampleGrabberCallback::OnShutdown()
{
return S_OK;
}
void AudioSampleGrabberCallback::addProbe(MFAudioProbeControl* probe)
{
QMutexLocker locker(&m_audioProbeMutex);
if (m_audioProbes.contains(probe))
return;
m_audioProbes.append(probe);
}
void AudioSampleGrabberCallback::removeProbe(MFAudioProbeControl* probe)
{
QMutexLocker locker(&m_audioProbeMutex);
m_audioProbes.removeOne(probe);
}
void AudioSampleGrabberCallback::setFormat(const QAudioFormat& format)
{
m_format = format;
}
STDMETHODIMP AudioSampleGrabberCallback::OnProcessSample(REFGUID guidMajorMediaType, DWORD dwSampleFlags,
LONGLONG llSampleTime, LONGLONG llSampleDuration, const BYTE * pSampleBuffer,
DWORD dwSampleSize)
{
Q_UNUSED(dwSampleFlags);
Q_UNUSED(llSampleTime);
Q_UNUSED(llSampleDuration);
if (guidMajorMediaType != GUID_NULL && guidMajorMediaType != MFMediaType_Audio)
return S_OK;
QMutexLocker locker(&m_audioProbeMutex);
if (m_audioProbes.isEmpty())
return S_OK;
// Check if sample has a presentation time
if (llSampleTime == _I64_MAX) {
// Set default QAudioBuffer start time
llSampleTime = -1;
} else {
// WMF uses 100-nanosecond units, Qt uses microseconds
llSampleTime /= 10;
}
for (MFAudioProbeControl* probe : qAsConst(m_audioProbes))
probe->bufferProbed((const char*)pSampleBuffer, dwSampleSize, m_format, llSampleTime);
return S_OK;
}
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