--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/plugins/multimedia/gstreamer/qgstxvimagebuffer.cpp Wed Aug 25 15:49:42 2010 +0300
@@ -0,0 +1,281 @@
+/****************************************************************************
+**
+** Copyright (C) 2010 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 <QtCore/qdebug.h>
+#include <QtCore/qthread.h>
+#include <QtCore/qvariant.h>
+#include <QtGui/qx11info_x11.h>
+
+#include "qgstxvimagebuffer.h"
+#include "qvideosurfacegstsink.h"
+
+#ifndef QT_NO_XVIDEO
+
+GstBufferClass *QGstXvImageBuffer::parent_class = NULL;
+
+GType QGstXvImageBuffer::get_type(void)
+{
+ static GType buffer_type = 0;
+
+ if (buffer_type == 0) {
+ static const GTypeInfo buffer_info = {
+ sizeof (GstBufferClass),
+ NULL,
+ NULL,
+ QGstXvImageBuffer::class_init,
+ NULL,
+ NULL,
+ sizeof(QGstXvImageBuffer),
+ 0,
+ (GInstanceInitFunc)QGstXvImageBuffer::buffer_init,
+ NULL
+ };
+ buffer_type = g_type_register_static(GST_TYPE_BUFFER,
+ "QGstXvImageBuffer", &buffer_info, GTypeFlags(0));
+ }
+ return buffer_type;
+}
+
+void QGstXvImageBuffer::class_init(gpointer g_class, gpointer class_data)
+{
+ Q_UNUSED(class_data);
+ GST_MINI_OBJECT_CLASS(g_class)->finalize =
+ (GstMiniObjectFinalizeFunction)buffer_finalize;
+ parent_class = (GstBufferClass*)g_type_class_peek_parent(g_class);
+}
+
+void QGstXvImageBuffer::buffer_init(QGstXvImageBuffer *xvImage, gpointer g_class)
+{
+ Q_UNUSED(g_class);
+ xvImage->pool = 0;
+ xvImage->shmInfo.shmaddr = ((char *) -1);
+ xvImage->shmInfo.shmid = -1;
+ xvImage->markedForDeletion = false;
+}
+
+void QGstXvImageBuffer::buffer_finalize(QGstXvImageBuffer * xvImage)
+{
+ if (xvImage->pool) {
+ if (xvImage->markedForDeletion)
+ xvImage->pool->destroyBuffer(xvImage);
+ else
+ xvImage->pool->recycleBuffer(xvImage);
+ }
+}
+
+
+QGstXvImageBufferPool::QGstXvImageBufferPool(QObject *parent)
+ :QObject(parent)
+{
+}
+
+QGstXvImageBufferPool::~QGstXvImageBufferPool()
+{
+}
+
+bool QGstXvImageBufferPool::isFormatSupported(const QVideoSurfaceFormat &surfaceFormat)
+{
+ bool ok = true;
+ surfaceFormat.property("portId").toULongLong(&ok);
+ if (!ok)
+ return false;
+
+ int xvFormatId = surfaceFormat.property("xvFormatId").toInt(&ok);
+ if (!ok || xvFormatId < 0)
+ return false;
+
+ int dataSize = surfaceFormat.property("dataSize").toInt(&ok);
+ if (!ok || dataSize<=0)
+ return false;
+
+ return true;
+}
+
+QGstXvImageBuffer *QGstXvImageBufferPool::takeBuffer(const QVideoSurfaceFormat &format, GstCaps *caps)
+{
+ m_poolMutex.lock();
+
+ m_caps = caps;
+ if (format != m_format) {
+ doClear();
+ m_format = format;
+ }
+
+
+ if (m_pool.isEmpty()) {
+ //qDebug() << "QGstXvImageBufferPool::takeBuffer: no buffer available, allocate the new one";
+ if (QThread::currentThread() == thread()) {
+ m_poolMutex.unlock();
+ queuedAlloc();
+ m_poolMutex.lock();
+ } else {
+ QMetaObject::invokeMethod(this, "queuedAlloc", Qt::QueuedConnection);
+ m_allocWaitCondition.wait(&m_poolMutex, 300);
+ }
+ }
+ QGstXvImageBuffer *res = 0;
+
+ if (!m_pool.isEmpty()) {
+ res = m_pool.takeLast();
+ }
+
+ m_poolMutex.unlock();
+
+ return res;
+}
+
+void QGstXvImageBufferPool::queuedAlloc()
+{
+ QMutexLocker lock(&m_poolMutex);
+
+ Q_ASSERT(QThread::currentThread() == thread());
+
+ QGstXvImageBuffer *xvBuffer = (QGstXvImageBuffer *)gst_mini_object_new(QGstXvImageBuffer::get_type());
+
+ quint64 portId = m_format.property("portId").toULongLong();
+ int xvFormatId = m_format.property("xvFormatId").toInt();
+
+ xvBuffer->xvImage = XvShmCreateImage(
+ QX11Info::display(),
+ portId,
+ xvFormatId,
+ 0,
+ m_format.frameWidth(),
+ m_format.frameHeight(),
+ &xvBuffer->shmInfo
+ );
+
+ if (!xvBuffer->xvImage) {
+ //qDebug() << "QGstXvImageBufferPool: XvShmCreateImage failed";
+ m_allocWaitCondition.wakeOne();
+ return;
+ }
+
+ xvBuffer->shmInfo.shmid = shmget(IPC_PRIVATE, xvBuffer->xvImage->data_size, IPC_CREAT | 0777);
+ xvBuffer->shmInfo.shmaddr = xvBuffer->xvImage->data = (char*)shmat(xvBuffer->shmInfo.shmid, 0, 0);
+ xvBuffer->shmInfo.readOnly = False;
+
+ if (!XShmAttach(QX11Info::display(), &xvBuffer->shmInfo)) {
+ //qDebug() << "QGstXvImageBufferPool: XShmAttach failed";
+ m_allocWaitCondition.wakeOne();
+ return;
+ }
+
+ shmctl (xvBuffer->shmInfo.shmid, IPC_RMID, NULL);
+
+ xvBuffer->pool = this;
+ GST_MINI_OBJECT_CAST(xvBuffer)->flags = 0;
+ gst_buffer_set_caps(GST_BUFFER_CAST(xvBuffer), m_caps);
+ GST_BUFFER_DATA(xvBuffer) = (uchar*)xvBuffer->xvImage->data;
+ GST_BUFFER_SIZE(xvBuffer) = xvBuffer->xvImage->data_size;
+
+ m_allBuffers.append(xvBuffer);
+ m_pool.append(xvBuffer);
+
+ m_allocWaitCondition.wakeOne();
+}
+
+
+void QGstXvImageBufferPool::clear()
+{
+ QMutexLocker lock(&m_poolMutex);
+ doClear();
+}
+
+void QGstXvImageBufferPool::doClear()
+{
+ foreach (QGstXvImageBuffer *xvBuffer, m_allBuffers) {
+ xvBuffer->markedForDeletion = true;
+ }
+ m_allBuffers.clear();
+
+ foreach (QGstXvImageBuffer *xvBuffer, m_pool) {
+ gst_buffer_unref(GST_BUFFER(xvBuffer));
+ }
+ m_pool.clear();
+
+ m_format = QVideoSurfaceFormat();
+}
+
+void QGstXvImageBufferPool::queuedDestroy()
+{
+ QMutexLocker lock(&m_destroyMutex);
+
+ foreach(XvShmImage xvImage, m_imagesToDestroy) {
+ if (xvImage.shmInfo.shmaddr != ((void *) -1)) {
+ XShmDetach(QX11Info::display(), &xvImage.shmInfo);
+ XSync(QX11Info::display(), false);
+
+ shmdt(xvImage.shmInfo.shmaddr);
+ }
+
+ if (xvImage.xvImage)
+ XFree(xvImage.xvImage);
+ }
+
+ m_imagesToDestroy.clear();
+
+ XSync(QX11Info::display(), false);
+}
+
+void QGstXvImageBufferPool::recycleBuffer(QGstXvImageBuffer *xvBuffer)
+{
+ QMutexLocker lock(&m_poolMutex);
+ gst_buffer_ref(GST_BUFFER_CAST(xvBuffer));
+ m_pool.append(xvBuffer);
+}
+
+void QGstXvImageBufferPool::destroyBuffer(QGstXvImageBuffer *xvBuffer)
+{
+ XvShmImage imageToDestroy;
+ imageToDestroy.xvImage = xvBuffer->xvImage;
+ imageToDestroy.shmInfo = xvBuffer->shmInfo;
+
+ m_destroyMutex.lock();
+ m_imagesToDestroy.append(imageToDestroy);
+ m_destroyMutex.unlock();
+
+ if (m_imagesToDestroy.size() == 1)
+ QMetaObject::invokeMethod(this, "queuedDestroy", Qt::QueuedConnection);
+}
+
+#endif //QT_NO_XVIDEO
+