Moved general gstreamer helper classes into separate library.
Cleaned up configuration of gstreamer with a separate config test. Change-Id: I1ec9ee466233687fbcfdc544a12d9fce578e4379 Reviewed-on: http://codereview.qt-project.org/6459 Sanity-Review: Qt Sanity Bot <qt_sanity_bot@ovi.com> Reviewed-by: Michael Goddard <michael.goddard@nokia.com>
This commit is contained in:
Jonas Rabbe
Qt by Nokia
311
src/gsttools/qgstxvimagebuffer.cpp
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311
src/gsttools/qgstxvimagebuffer.cpp
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/****************************************************************************
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**
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** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
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** All rights reserved.
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** Contact: Nokia Corporation (qt-info@nokia.com)
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**
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** This file is part of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:LGPL$
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** GNU Lesser General Public License Usage
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** This file may be used under the terms of the GNU Lesser General Public
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** License version 2.1 as published by the Free Software Foundation and
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** appearing in the file LICENSE.LGPL included in the packaging of this
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** file. Please review the following information to ensure the GNU Lesser
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** General Public License version 2.1 requirements will be met:
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** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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**
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** In addition, as a special exception, Nokia gives you certain additional
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** rights. These rights are described in the Nokia Qt LGPL Exception
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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**
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** GNU General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU General
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** Public License version 3.0 as published by the Free Software Foundation
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** and appearing in the file LICENSE.GPL included in the packaging of this
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** file. Please review the following information to ensure the GNU General
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** Public License version 3.0 requirements will be met:
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** http://www.gnu.org/copyleft/gpl.html.
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**
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** Other Usage
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** Alternatively, this file may be used in accordance with the terms and
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** conditions contained in a signed written agreement between you and Nokia.
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**
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**
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**
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**
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#include <QtCore/qdebug.h>
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#include <QtCore/qthread.h>
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#include <QtCore/qvariant.h>
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#include <QtWidgets/qx11info_x11.h>
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#include "qgstxvimagebuffer_p.h"
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#include "qvideosurfacegstsink_p.h"
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#include "qgstvideobuffer_p.h"
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#ifndef QT_NO_XVIDEO
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GstBufferClass *QGstXvImageBuffer::parent_class = NULL;
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GType QGstXvImageBuffer::get_type(void)
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{
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static GType buffer_type = 0;
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if (buffer_type == 0) {
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static const GTypeInfo buffer_info = {
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sizeof (GstBufferClass),
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NULL,
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NULL,
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QGstXvImageBuffer::class_init,
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NULL,
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NULL,
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sizeof(QGstXvImageBuffer),
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0,
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(GInstanceInitFunc)QGstXvImageBuffer::buffer_init,
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NULL
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};
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buffer_type = g_type_register_static(GST_TYPE_BUFFER,
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"QGstXvImageBuffer", &buffer_info, GTypeFlags(0));
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}
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return buffer_type;
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}
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void QGstXvImageBuffer::class_init(gpointer g_class, gpointer class_data)
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{
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Q_UNUSED(class_data);
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GST_MINI_OBJECT_CLASS(g_class)->finalize =
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(GstMiniObjectFinalizeFunction)buffer_finalize;
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parent_class = (GstBufferClass*)g_type_class_peek_parent(g_class);
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}
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void QGstXvImageBuffer::buffer_init(QGstXvImageBuffer *xvImage, gpointer g_class)
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{
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Q_UNUSED(g_class);
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xvImage->pool = 0;
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xvImage->shmInfo.shmaddr = ((char *) -1);
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xvImage->shmInfo.shmid = -1;
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xvImage->markedForDeletion = false;
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}
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void QGstXvImageBuffer::buffer_finalize(QGstXvImageBuffer * xvImage)
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{
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if (xvImage->pool) {
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if (xvImage->markedForDeletion)
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xvImage->pool->destroyBuffer(xvImage);
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else
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xvImage->pool->recycleBuffer(xvImage);
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}
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}
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QGstXvImageBufferPool::QGstXvImageBufferPool(QObject *parent)
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:QObject(parent)
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{
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m_threadId = QThread::currentThreadId();
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}
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QGstXvImageBufferPool::~QGstXvImageBufferPool()
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{
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}
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bool QGstXvImageBufferPool::isFormatSupported(const QVideoSurfaceFormat &surfaceFormat) const
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{
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bool ok = true;
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surfaceFormat.property("portId").toULongLong(&ok);
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if (!ok)
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return false;
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int xvFormatId = surfaceFormat.property("xvFormatId").toInt(&ok);
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if (!ok || xvFormatId < 0)
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return false;
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int dataSize = surfaceFormat.property("dataSize").toInt(&ok);
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if (!ok || dataSize<=0)
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return false;
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return true;
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}
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GType QGstXvImageBufferPool::bufferType() const
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{
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return QGstXvImageBuffer::get_type();
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}
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GstBuffer *QGstXvImageBufferPool::takeBuffer(
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const QVideoSurfaceFormat &format, GstCaps *caps)
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{
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m_poolMutex.lock();
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m_caps = caps;
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if (format != m_format) {
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doClear();
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m_format = format;
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}
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if (m_pool.isEmpty()) {
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//qDebug() << "QGstXvImageBufferPool::takeBuffer: no buffer available, allocate the new one" << QThread::currentThreadId() << m_threadId;
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if (QThread::currentThreadId() == m_threadId) {
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doAlloc();
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} else {
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QMetaObject::invokeMethod(this, "queuedAlloc", Qt::QueuedConnection);
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m_allocWaitCondition.wait(&m_poolMutex, 300);
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}
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}
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QGstXvImageBuffer *res = 0;
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if (!m_pool.isEmpty()) {
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res = m_pool.takeLast();
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}
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m_poolMutex.unlock();
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return GST_BUFFER(res);
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}
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QAbstractVideoBuffer::HandleType QGstXvImageBufferPool::handleType() const
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{
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return QAbstractVideoBuffer::XvShmImageHandle;
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}
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QAbstractVideoBuffer *QGstXvImageBufferPool::prepareVideoBuffer(GstBuffer *buffer, int bytesPerLine)
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{
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QGstXvImageBuffer *xvBuffer = reinterpret_cast<QGstXvImageBuffer *>(buffer);
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QVariant handle = QVariant::fromValue(xvBuffer->xvImage);
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return new QGstVideoBuffer(buffer, bytesPerLine, QAbstractVideoBuffer::XvShmImageHandle, handle);
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}
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void QGstXvImageBufferPool::queuedAlloc()
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{
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QMutexLocker lock(&m_poolMutex);
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doAlloc();
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m_allocWaitCondition.wakeOne();
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}
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void QGstXvImageBufferPool::doAlloc()
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{
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//should be always called from the main thread with m_poolMutex locked
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//Q_ASSERT(QThread::currentThread() == thread());
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XSync(QX11Info::display(), false);
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QGstXvImageBuffer *xvBuffer = (QGstXvImageBuffer *)gst_mini_object_new(QGstXvImageBuffer::get_type());
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quint64 portId = m_format.property("portId").toULongLong();
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int xvFormatId = m_format.property("xvFormatId").toInt();
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xvBuffer->xvImage = XvShmCreateImage(
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QX11Info::display(),
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portId,
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xvFormatId,
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0,
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m_format.frameWidth(),
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m_format.frameHeight(),
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&xvBuffer->shmInfo
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);
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if (!xvBuffer->xvImage) {
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qWarning() << "QGstXvImageBufferPool: XvShmCreateImage failed";
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return;
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}
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XSync(QX11Info::display(), false);
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xvBuffer->shmInfo.shmid = shmget(IPC_PRIVATE, xvBuffer->xvImage->data_size, IPC_CREAT | 0777);
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xvBuffer->shmInfo.shmaddr = xvBuffer->xvImage->data = (char*)shmat(xvBuffer->shmInfo.shmid, 0, 0);
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xvBuffer->shmInfo.readOnly = False;
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if (!XShmAttach(QX11Info::display(), &xvBuffer->shmInfo)) {
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qWarning() << "QGstXvImageBufferPool: XShmAttach failed";
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return;
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}
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XSync(QX11Info::display(), false);
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shmctl (xvBuffer->shmInfo.shmid, IPC_RMID, NULL);
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xvBuffer->pool = this;
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GST_MINI_OBJECT_CAST(xvBuffer)->flags = 0;
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gst_buffer_set_caps(GST_BUFFER_CAST(xvBuffer), m_caps);
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GST_BUFFER_DATA(xvBuffer) = (uchar*)xvBuffer->xvImage->data;
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GST_BUFFER_SIZE(xvBuffer) = xvBuffer->xvImage->data_size;
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m_allBuffers.append(xvBuffer);
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m_pool.append(xvBuffer);
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XSync(QX11Info::display(), false);
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}
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void QGstXvImageBufferPool::clear()
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{
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QMutexLocker lock(&m_poolMutex);
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doClear();
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}
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void QGstXvImageBufferPool::doClear()
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{
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foreach (QGstXvImageBuffer *xvBuffer, m_allBuffers) {
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xvBuffer->markedForDeletion = true;
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}
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m_allBuffers.clear();
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foreach (QGstXvImageBuffer *xvBuffer, m_pool) {
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gst_buffer_unref(GST_BUFFER(xvBuffer));
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}
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m_pool.clear();
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m_format = QVideoSurfaceFormat();
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}
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void QGstXvImageBufferPool::queuedDestroy()
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{
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QMutexLocker lock(&m_destroyMutex);
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XSync(QX11Info::display(), false);
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foreach(XvShmImage xvImage, m_imagesToDestroy) {
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if (xvImage.shmInfo.shmaddr != ((void *) -1)) {
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XShmDetach(QX11Info::display(), &xvImage.shmInfo);
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XSync(QX11Info::display(), false);
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shmdt(xvImage.shmInfo.shmaddr);
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}
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if (xvImage.xvImage)
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XFree(xvImage.xvImage);
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}
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m_imagesToDestroy.clear();
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XSync(QX11Info::display(), false);
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}
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void QGstXvImageBufferPool::recycleBuffer(QGstXvImageBuffer *xvBuffer)
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{
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QMutexLocker lock(&m_poolMutex);
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gst_buffer_ref(GST_BUFFER_CAST(xvBuffer));
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m_pool.append(xvBuffer);
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}
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void QGstXvImageBufferPool::destroyBuffer(QGstXvImageBuffer *xvBuffer)
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{
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XvShmImage imageToDestroy;
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imageToDestroy.xvImage = xvBuffer->xvImage;
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imageToDestroy.shmInfo = xvBuffer->shmInfo;
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m_destroyMutex.lock();
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m_imagesToDestroy.append(imageToDestroy);
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m_destroyMutex.unlock();
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if (m_imagesToDestroy.size() == 1)
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QMetaObject::invokeMethod(this, "queuedDestroy", Qt::QueuedConnection);
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}
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#endif //QT_NO_XVIDEO
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