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Diffstat (limited to 'src/gsttools/qgstxvimagebuffer.cpp')
-rw-r--r-- | src/gsttools/qgstxvimagebuffer.cpp | 329 |
1 files changed, 0 insertions, 329 deletions
diff --git a/src/gsttools/qgstxvimagebuffer.cpp b/src/gsttools/qgstxvimagebuffer.cpp deleted file mode 100644 index d43b30f22..000000000 --- a/src/gsttools/qgstxvimagebuffer.cpp +++ /dev/null @@ -1,329 +0,0 @@ -/**************************************************************************** -** -** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies). -** Contact: http://www.qt-project.org/legal -** -** 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 Digia. For licensing terms and -** conditions see http://qt.digia.com/licensing. For further information -** use the contact form at http://qt.digia.com/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 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, Digia gives you certain additional -** rights. These rights are described in the Digia Qt LGPL Exception -** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. -** -** GNU General Public License Usage -** Alternatively, this file may be used under the terms of the GNU -** General Public License version 3.0 as published by the Free Software -** Foundation and appearing in the file LICENSE.GPL included in the -** packaging of this file. Please review the following information to -** ensure the GNU General Public License version 3.0 requirements will be -** met: http://www.gnu.org/copyleft/gpl.html. -** -** -** $QT_END_LICENSE$ -** -****************************************************************************/ - -#include <QtCore/qdebug.h> -#include <QtCore/qthread.h> -#include <QtCore/qvariant.h> -#include <QtGui/qguiapplication.h> -#include <QtGui/qwindow.h> -#include <qpa/qplatformnativeinterface.h> - -#include "qgstxvimagebuffer_p.h" -#include "qvideosurfacegstsink_p.h" -#include "qgstvideobuffer_p.h" - -QT_BEGIN_NAMESPACE - -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) -{ - m_threadId = QThread::currentThreadId(); -} - -QGstXvImageBufferPool::~QGstXvImageBufferPool() -{ -} - -bool QGstXvImageBufferPool::isFormatSupported(const QVideoSurfaceFormat &surfaceFormat) const -{ - 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; -} - -GType QGstXvImageBufferPool::bufferType() const -{ - return QGstXvImageBuffer::get_type(); -} - -GstBuffer *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" << QThread::currentThreadId() << m_threadId; - if (QThread::currentThreadId() == m_threadId) { - doAlloc(); - } 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 GST_BUFFER(res); -} - -QAbstractVideoBuffer::HandleType QGstXvImageBufferPool::handleType() const -{ - return QAbstractVideoBuffer::XvShmImageHandle; -} - -QAbstractVideoBuffer *QGstXvImageBufferPool::prepareVideoBuffer(GstBuffer *buffer, int bytesPerLine) -{ - if (!G_TYPE_CHECK_INSTANCE_TYPE(buffer, bufferType())) - return 0; - - QGstXvImageBuffer *xvBuffer = reinterpret_cast<QGstXvImageBuffer *>(buffer); - QVariant handle = QVariant::fromValue(xvBuffer->xvImage); - return new QGstVideoBuffer(buffer, bytesPerLine, QAbstractVideoBuffer::XvShmImageHandle, handle); -} - -QStringList QGstXvImageBufferPool::keys() const -{ - return QStringList() << QGstBufferPoolPluginKey; -} - -void QGstXvImageBufferPool::queuedAlloc() -{ - QMutexLocker lock(&m_poolMutex); - doAlloc(); - m_allocWaitCondition.wakeOne(); -} - -void QGstXvImageBufferPool::doAlloc() -{ - //should be always called from the main thread with m_poolMutex locked - //Q_ASSERT(QThread::currentThread() == thread()); - - XSync(display(), false); - - 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( - display(), - portId, - xvFormatId, - 0, - m_format.frameWidth(), - m_format.frameHeight(), - &xvBuffer->shmInfo - ); - - if (!xvBuffer->xvImage) { - qWarning() << "QGstXvImageBufferPool: XvShmCreateImage failed"; - return; - } - - XSync(display(), false); - - 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(display(), &xvBuffer->shmInfo)) { - qWarning() << "QGstXvImageBufferPool: XShmAttach failed"; - return; - } - - XSync(display(), false); - - 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); - - XSync(display(), false); -} - - -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); - - XSync(display(), false); - - foreach(XvShmImage xvImage, m_imagesToDestroy) { - if (xvImage.shmInfo.shmaddr != ((void *) -1)) { - XShmDetach(display(), &xvImage.shmInfo); - XSync(display(), false); - - shmdt(xvImage.shmInfo.shmaddr); - } - - if (xvImage.xvImage) - XFree(xvImage.xvImage); - } - - m_imagesToDestroy.clear(); - - XSync(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); -} - -Display *QGstXvImageBufferPool::display() const -{ - QWindow *window = QGuiApplication::topLevelWindows().first(); - Display *display = static_cast<Display *>(QGuiApplication::platformNativeInterface()->nativeResourceForWindow("Display", window)); - - return display; -} - -QT_END_NAMESPACE - |