--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/qtmobility/plugins/multimedia/directshow/player/directshowsamplescheduler.cpp Fri Apr 16 15:51:22 2010 +0300
@@ -0,0 +1,409 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the Qt Mobility Components.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights. These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "directshowsamplescheduler.h"
+
+#include <QtCore/qcoreevent.h>
+
+class DirectShowTimedSample
+{
+public:
+ DirectShowTimedSample(IMediaSample *sample)
+ : m_next(0)
+ , m_sample(sample)
+ , m_cookie(0)
+ , m_lastSample(false)
+ {
+ m_sample->AddRef();
+ }
+
+ ~DirectShowTimedSample()
+ {
+ m_sample->Release();
+ }
+
+ IMediaSample *sample() const { return m_sample; }
+
+ DirectShowTimedSample *nextSample() const { return m_next; }
+ void setNextSample(DirectShowTimedSample *sample) { Q_ASSERT(!m_next); m_next = sample; }
+
+ DirectShowTimedSample *remove() {
+ DirectShowTimedSample *next = m_next; delete this; return next; }
+
+ bool schedule(IReferenceClock *clock, REFERENCE_TIME startTime, HANDLE handle);
+ void unschedule(IReferenceClock *clock);
+
+ bool isReady(IReferenceClock *clock) const;
+
+ bool isLast() const { return m_lastSample; }
+ void setLast() { m_lastSample = true; }
+
+private:
+ DirectShowTimedSample *m_next;
+ IMediaSample *m_sample;
+ DWORD_PTR m_cookie;
+ bool m_lastSample;
+};
+
+bool DirectShowTimedSample::schedule(
+ IReferenceClock *clock, REFERENCE_TIME startTime, HANDLE handle)
+{
+ REFERENCE_TIME sampleStartTime;
+ REFERENCE_TIME sampleEndTime;
+ if (m_sample->GetTime(&sampleStartTime, &sampleEndTime) == S_OK) {
+ if (clock->AdviseTime(
+ startTime, sampleStartTime, reinterpret_cast<HEVENT>(handle), &m_cookie) == S_OK) {
+ return true;
+ }
+ }
+ return false;
+}
+
+void DirectShowTimedSample::unschedule(IReferenceClock *clock)
+{
+ clock->Unadvise(m_cookie);
+}
+
+bool DirectShowTimedSample::isReady(IReferenceClock *clock) const
+{
+ REFERENCE_TIME sampleStartTime;
+ REFERENCE_TIME sampleEndTime;
+ REFERENCE_TIME currentTime;
+ if (m_sample->GetTime(&sampleStartTime, &sampleEndTime) == S_OK) {
+ if (clock->GetTime(¤tTime) == S_OK)
+ return currentTime >= sampleStartTime;
+ }
+ return true;
+}
+
+DirectShowSampleScheduler::DirectShowSampleScheduler(IUnknown *pin, QObject *parent)
+ : QWinEventNotifier(parent)
+ , m_pin(pin)
+ , m_clock(0)
+ , m_allocator(0)
+ , m_head(0)
+ , m_tail(0)
+ , m_maximumSamples(2)
+ , m_state(Stopped)
+ , m_startTime(0)
+ , m_timeoutEvent(::CreateEvent(0, 0, 0, 0))
+{
+ m_semaphore.release(m_maximumSamples);
+
+ setHandle(m_timeoutEvent);
+ setEnabled(true);
+}
+
+DirectShowSampleScheduler::~DirectShowSampleScheduler()
+{
+ setEnabled(false);
+
+ ::CloseHandle(m_timeoutEvent);
+
+ Q_ASSERT(!m_clock);
+ Q_ASSERT(!m_allocator);
+}
+
+HRESULT DirectShowSampleScheduler::QueryInterface(REFIID riid, void **ppvObject)
+{
+ return m_pin->QueryInterface(riid, ppvObject);
+}
+
+ULONG DirectShowSampleScheduler::AddRef()
+{
+ return m_pin->AddRef();
+}
+
+ULONG DirectShowSampleScheduler::Release()
+{
+ return m_pin->Release();
+}
+
+// IMemInputPin
+HRESULT DirectShowSampleScheduler::GetAllocator(IMemAllocator **ppAllocator)
+{
+ if (!ppAllocator) {
+ return E_POINTER;
+ } else {
+ QMutexLocker locker(&m_mutex);
+
+ if (!m_allocator) {
+ return VFW_E_NO_ALLOCATOR;
+ } else {
+ *ppAllocator = m_allocator;
+
+ return S_OK;
+ }
+ }
+}
+
+HRESULT DirectShowSampleScheduler::NotifyAllocator(IMemAllocator *pAllocator, BOOL bReadOnly)
+{
+ Q_UNUSED(bReadOnly);
+
+ HRESULT hr;
+ ALLOCATOR_PROPERTIES properties;
+
+ if (!pAllocator) {
+ if (m_allocator)
+ m_allocator->Release();
+
+ m_allocator = 0;
+
+ return S_OK;
+ } else if ((hr = pAllocator->GetProperties(&properties)) != S_OK) {
+ return hr;
+ } else {
+ if (properties.cBuffers == 1) {
+ ALLOCATOR_PROPERTIES actual;
+
+ properties.cBuffers = 2;
+ if ((hr = pAllocator->SetProperties(&properties, &actual)) != S_OK)
+ return hr;
+ }
+
+ QMutexLocker locker(&m_mutex);
+
+ if (m_allocator)
+ m_allocator->Release();
+
+ m_allocator = pAllocator;
+ m_allocator->AddRef();
+
+ return S_OK;
+ }
+}
+
+HRESULT DirectShowSampleScheduler::GetAllocatorRequirements(ALLOCATOR_PROPERTIES *pProps)
+{
+ if (!pProps)
+ return E_POINTER;
+
+ pProps->cBuffers = 2;
+
+ return S_OK;
+}
+
+HRESULT DirectShowSampleScheduler::Receive(IMediaSample *pSample)
+{
+ if (!pSample)
+ return E_POINTER;
+
+ m_semaphore.acquire(1);
+
+ QMutexLocker locker(&m_mutex);
+
+ if (m_state & Flushing) {
+ m_semaphore.release(1);
+
+ return S_FALSE;
+ } else if (m_state == Stopped) {
+ m_semaphore.release();
+
+ return VFW_E_WRONG_STATE;
+ } else {
+ DirectShowTimedSample *timedSample = new DirectShowTimedSample(pSample);
+
+ if (m_tail)
+ m_tail->setNextSample(timedSample);
+ else
+ m_head = timedSample;
+
+ m_tail = timedSample;
+
+ if (m_state == Running) {
+ if (!timedSample->schedule(m_clock, m_startTime, m_timeoutEvent)) {
+ // Timing information is unavailable, so schedule frames immediately.
+ QMetaObject::invokeMethod(this, "timerActivated", Qt::QueuedConnection);
+ }
+ } else if (m_tail == m_head) {
+ // If this is the first frame make is available.
+ QMetaObject::invokeMethod(this, "timerActivated", Qt::QueuedConnection);
+ }
+
+ return S_OK;
+ }
+}
+
+HRESULT DirectShowSampleScheduler::ReceiveMultiple(
+ IMediaSample **pSamples, long nSamples, long *nSamplesProcessed)
+{
+ if (!pSamples || !nSamplesProcessed)
+ return E_POINTER;
+
+ for (*nSamplesProcessed = 0; *nSamplesProcessed < nSamples; ++(*nSamplesProcessed)) {
+ HRESULT hr = Receive(pSamples[*nSamplesProcessed]);
+
+ if (hr != S_OK)
+ return hr;
+ }
+ return S_OK;
+}
+
+HRESULT DirectShowSampleScheduler::ReceiveCanBlock()
+{
+ return S_OK;
+}
+
+void DirectShowSampleScheduler::run(REFERENCE_TIME startTime)
+{
+ QMutexLocker locker(&m_mutex);
+
+ m_state = (m_state & Flushing) | Running;
+ m_startTime = startTime;
+
+ for (DirectShowTimedSample *sample = m_head; sample; sample = sample->nextSample()) {
+ sample->schedule(m_clock, m_startTime, m_timeoutEvent);
+ }
+}
+
+void DirectShowSampleScheduler::pause()
+{
+ QMutexLocker locker(&m_mutex);
+
+ m_state = (m_state & Flushing) | Paused;
+
+ for (DirectShowTimedSample *sample = m_head; sample; sample = sample->nextSample())
+ sample->unschedule(m_clock);
+}
+
+void DirectShowSampleScheduler::stop()
+{
+ QMutexLocker locker(&m_mutex);
+
+ m_state = m_state & Flushing;
+
+ for (DirectShowTimedSample *sample = m_head; sample; sample = sample->remove()) {
+ sample->unschedule(m_clock);
+
+ m_semaphore.release(1);
+ }
+
+ m_head = 0;
+ m_tail = 0;
+}
+
+void DirectShowSampleScheduler::setFlushing(bool flushing)
+{
+ QMutexLocker locker(&m_mutex);
+
+ const bool isFlushing = m_state & Flushing;
+
+ if (isFlushing != flushing) {
+ if (flushing) {
+ m_state |= Flushing;
+
+ for (DirectShowTimedSample *sample = m_head; sample; sample = sample->remove()) {
+ sample->unschedule(m_clock);
+
+ m_semaphore.release(1);
+ }
+ m_head = 0;
+ m_tail = 0;
+ } else {
+ m_state &= ~Flushing;
+ }
+ }
+}
+
+void DirectShowSampleScheduler::setClock(IReferenceClock *clock)
+{
+ QMutexLocker locker(&m_mutex);
+
+ if (m_clock)
+ m_clock->Release();
+
+ m_clock = clock;
+
+ if (m_clock)
+ m_clock->AddRef();
+}
+
+IMediaSample *DirectShowSampleScheduler::takeSample(bool *eos)
+{
+ QMutexLocker locker(&m_mutex);
+
+ if (m_head && m_head->isReady(m_clock)) {
+ IMediaSample *sample = m_head->sample();
+ sample->AddRef();
+
+ if (m_state == Running) {
+ *eos = m_head->isLast();
+
+ m_head = m_head->remove();
+
+ if (!m_head)
+ m_tail = 0;
+
+ m_semaphore.release(1);
+ }
+
+ return sample;
+ } else {
+ return 0;
+ }
+}
+
+bool DirectShowSampleScheduler::scheduleEndOfStream()
+{
+ QMutexLocker locker(&m_mutex);
+
+ if (m_tail) {
+ m_tail->setLast();
+
+ return true;
+ } else {
+ return false;
+ }
+}
+
+bool DirectShowSampleScheduler::event(QEvent *event)
+{
+ if (event->type() == QEvent::WinEventAct) {
+ QObject::event(event);
+
+ emit sampleReady();
+
+ return true;
+ } else {
+ return QWinEventNotifier::event(event);
+ }
+}