mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-12-13 20:06:35 +00:00
8b87d7bcf7
* Enabled cc file parsing from hotdoc * Moved package to plugins-good where it really is * Fixed section comments Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/6603>
577 lines
17 KiB
C++
577 lines
17 KiB
C++
/*
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* GStreamer
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* Copyright (C) 2016 Freescale Semiconductor, Inc. All rights reserved.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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/**
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* SECTION:element-qmlglsrc
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*
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* A video src that captures a window from a QML view.
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include "gstqtelements.h"
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#include "gstqtsrc.h"
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#include <QtGui/QGuiApplication>
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#define GST_CAT_DEFAULT gst_debug_qt_gl_src
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GST_DEBUG_CATEGORY (GST_CAT_DEFAULT);
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#define DEFAULT_IS_LIVE TRUE
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static void gst_qt_src_set_property (GObject * object, guint prop_id,
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const GValue * value, GParamSpec * pspec);
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static void gst_qt_src_get_property (GObject * object, guint prop_id,
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GValue * value, GParamSpec * pspec);
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static void gst_qt_src_finalize (GObject * object);
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static gboolean gst_qt_src_setcaps (GstBaseSrc * bsrc, GstCaps * caps);
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static GstCaps *gst_qt_src_get_caps (GstBaseSrc * bsrc, GstCaps * filter);
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static gboolean gst_qt_src_query (GstBaseSrc * bsrc, GstQuery * query);
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static gboolean gst_qt_src_decide_allocation (GstBaseSrc * bsrc,
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GstQuery * query);
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static GstFlowReturn gst_qt_src_fill (GstPushSrc * psrc, GstBuffer * buffer);
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static GstStateChangeReturn gst_qt_src_change_state (GstElement * element,
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GstStateChange transition);
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static gboolean gst_qt_src_start (GstBaseSrc * basesrc);
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static gboolean gst_qt_src_stop (GstBaseSrc * basesrc);
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static gboolean gst_qt_src_unlock(GstBaseSrc *basesrc);
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static GstStaticPadTemplate gst_qt_src_template =
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GST_STATIC_PAD_TEMPLATE ("src",
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GST_PAD_SRC,
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GST_PAD_ALWAYS,
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GST_STATIC_CAPS ("video/x-raw(" GST_CAPS_FEATURE_MEMORY_GL_MEMORY "), "
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"format = (string) RGBA, "
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"width = " GST_VIDEO_SIZE_RANGE ", "
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"height = " GST_VIDEO_SIZE_RANGE ", "
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"framerate = " GST_VIDEO_FPS_RANGE ", "
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"texture-target = (string) 2D"));
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enum
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{
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ARG_0,
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PROP_WINDOW,
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PROP_DEFAULT_FBO
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};
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#define gst_qt_src_parent_class parent_class
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G_DEFINE_TYPE_WITH_CODE (GstQtSrc, gst_qt_src,
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GST_TYPE_PUSH_SRC, GST_DEBUG_CATEGORY_INIT (GST_CAT_DEFAULT,
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"qtsrc", 0, "Qt Video Src"));
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GST_ELEMENT_REGISTER_DEFINE_WITH_CODE (qmlglsrc, "qmlglsrc",
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GST_RANK_NONE, GST_TYPE_QT_SRC, qt5_element_init (plugin));
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static const gfloat vertical_flip_matrix[] = {
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1.0f, 0.0f, 0.0f, 0.0f,
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0.0f, -1.0f, 0.0f, 0.0f,
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0.0f, 0.0f, 1.0f, 0.0f,
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0.0f, 1.0f, 0.0f, 1.0f,
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};
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static void
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gst_qt_src_class_init (GstQtSrcClass * klass)
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{
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GObjectClass *gobject_class = (GObjectClass *) klass;
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GstElementClass *gstelement_class = (GstElementClass *) klass;
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GstBaseSrcClass *gstbasesrc_class = (GstBaseSrcClass *) klass;
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GstPushSrcClass *gstpushsrc_class = (GstPushSrcClass *) klass;
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gobject_class->set_property = gst_qt_src_set_property;
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gobject_class->get_property = gst_qt_src_get_property;
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gobject_class->finalize = gst_qt_src_finalize;
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gst_element_class_set_metadata (gstelement_class, "Qt Video Source",
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"Source/Video", "A video src that captures a window from a QML view",
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"Multimedia Team <shmmmw@freescale.com>");
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g_object_class_install_property (gobject_class, PROP_WINDOW,
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g_param_spec_pointer ("window", "QQuickWindow",
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"The QQuickWindow to place in the object hierarchy",
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(GParamFlags) (G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)));
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g_object_class_install_property (gobject_class, PROP_DEFAULT_FBO,
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g_param_spec_boolean ("use-default-fbo",
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"Whether to use default FBO",
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"When set it will not create a new FBO for the QML render thread",
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FALSE, (GParamFlags) (G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)));
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gst_element_class_add_pad_template (gstelement_class,
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gst_static_pad_template_get (&gst_qt_src_template));
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gstelement_class->change_state = gst_qt_src_change_state;
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gstbasesrc_class->set_caps = gst_qt_src_setcaps;
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gstbasesrc_class->get_caps = gst_qt_src_get_caps;
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gstbasesrc_class->query = gst_qt_src_query;
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gstbasesrc_class->start = gst_qt_src_start;
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gstbasesrc_class->stop = gst_qt_src_stop;
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gstbasesrc_class->unlock = gst_qt_src_unlock;
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gstbasesrc_class->decide_allocation = gst_qt_src_decide_allocation;
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gstpushsrc_class->fill = gst_qt_src_fill;
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}
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static void
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gst_qt_src_init (GstQtSrc * src)
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{
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gst_base_src_set_format (GST_BASE_SRC (src), GST_FORMAT_TIME);
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gst_base_src_set_live (GST_BASE_SRC (src), DEFAULT_IS_LIVE);
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src->default_fbo = FALSE;
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src->pending_image_orientation = TRUE;
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}
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static void
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gst_qt_src_set_property (GObject * object, guint prop_id,
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const GValue * value, GParamSpec * pspec)
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{
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GstQtSrc *qt_src = GST_QT_SRC (object);
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switch (prop_id) {
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case PROP_WINDOW:{
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qt_src->qwindow =
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static_cast < QQuickWindow * >(g_value_get_pointer (value));
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if (qt_src->window) {
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delete qt_src->window;
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qt_src->window = NULL;
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}
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if (qt_src->qwindow)
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qt_src->window = new QtGLWindow (NULL, qt_src->qwindow);
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break;
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}
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case PROP_DEFAULT_FBO:
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qt_src->default_fbo = g_value_get_boolean (value);
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if (qt_src->window)
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qt_window_use_default_fbo (qt_src->window, qt_src->default_fbo);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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}
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}
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static void
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gst_qt_src_get_property (GObject * object, guint prop_id,
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GValue * value, GParamSpec * pspec)
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{
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GstQtSrc *qt_src = GST_QT_SRC (object);
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switch (prop_id) {
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case PROP_WINDOW:
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g_value_set_pointer (value, qt_src->qwindow);
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break;
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case PROP_DEFAULT_FBO:
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g_value_set_boolean (value, qt_src->default_fbo);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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}
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}
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static void
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gst_qt_src_finalize (GObject * object)
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{
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GstQtSrc *qt_src = GST_QT_SRC (object);
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GST_DEBUG ("qmlglsrc finalize");
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if (qt_src->context)
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gst_object_unref (qt_src->context);
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qt_src->context = NULL;
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if (qt_src->qt_context)
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gst_object_unref (qt_src->qt_context);
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qt_src->qt_context = NULL;
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if (qt_src->display)
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gst_object_unref (qt_src->display);
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qt_src->display = NULL;
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if (qt_src->window)
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delete qt_src->window;
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G_OBJECT_CLASS (parent_class)->finalize (object);
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}
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static gboolean
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gst_qt_src_setcaps (GstBaseSrc * bsrc, GstCaps * caps)
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{
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GstQtSrc *qt_src = GST_QT_SRC (bsrc);
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GST_DEBUG ("set caps with %" GST_PTR_FORMAT, caps);
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if (!gst_video_info_from_caps (&qt_src->v_info, caps))
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return FALSE;
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if (!qt_window_set_caps (qt_src->window, caps))
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return FALSE;
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return TRUE;
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}
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static GstCaps *
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gst_qt_src_get_caps (GstBaseSrc * bsrc, GstCaps * filter)
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{
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GstCaps *caps = NULL, *temp = NULL;
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GstPadTemplate *pad_template;
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GstBaseSrcClass *bclass = GST_BASE_SRC_GET_CLASS (bsrc);
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GstQtSrc *qt_src = GST_QT_SRC (bsrc);
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guint i;
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gint width, height;
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if (qt_src->window) {
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qt_src->window->getGeometry (&width, &height);
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}
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pad_template =
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gst_element_class_get_pad_template (GST_ELEMENT_CLASS (bclass), "src");
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if (pad_template != NULL)
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caps = gst_pad_template_get_caps (pad_template);
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if (qt_src->window) {
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temp = gst_caps_copy (caps);
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guint n_caps = gst_caps_get_size (caps);
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for (i = 0; i < n_caps; i++) {
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GstStructure *s = gst_caps_get_structure (temp, i);
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gst_structure_set (s, "width", G_TYPE_INT, width, NULL);
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gst_structure_set (s, "height", G_TYPE_INT, height, NULL);
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/* because the framerate is unknown */
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gst_structure_set (s, "framerate", GST_TYPE_FRACTION, 0, 1, NULL);
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gst_structure_set (s, "pixel-aspect-ratio",
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GST_TYPE_FRACTION, 1, 1, NULL);
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}
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gst_caps_unref (caps);
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caps = temp;
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}
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if (filter) {
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GstCaps *intersection;
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intersection =
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gst_caps_intersect_full (filter, caps, GST_CAPS_INTERSECT_FIRST);
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gst_caps_unref (caps);
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caps = intersection;
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}
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return caps;
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}
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static gboolean
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gst_qt_src_query (GstBaseSrc * bsrc, GstQuery * query)
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{
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GstQtSrc *qt_src = GST_QT_SRC (bsrc);
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gboolean res = FALSE;
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switch (GST_QUERY_TYPE (query)) {
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case GST_QUERY_CONTEXT:
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{
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if (!qt_window_is_scenegraph_initialized (qt_src->window))
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return FALSE;
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if (!qt_src->display && !qt_src->qt_context) {
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if (!qt_src->display)
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qt_src->display = qt_window_get_display (qt_src->window);
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if (!qt_src->qt_context)
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qt_src->qt_context = qt_window_get_qt_context (qt_src->window);
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if (!qt_src->context)
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qt_src->context = qt_window_get_context (qt_src->window);
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}
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if (gst_gl_handle_context_query ((GstElement *) qt_src, query,
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qt_src->display, qt_src->context, qt_src->qt_context))
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return TRUE;
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/* fallthrough */
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}
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default:
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res = GST_BASE_SRC_CLASS (parent_class)->query (bsrc, query);
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break;
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}
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return res;
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}
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static gboolean
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_find_local_gl_context (GstQtSrc * qt_src)
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{
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if (gst_gl_query_local_gl_context (GST_ELEMENT (qt_src), GST_PAD_SRC,
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&qt_src->context))
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return TRUE;
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return FALSE;
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}
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static gboolean
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gst_qt_src_decide_allocation (GstBaseSrc * bsrc, GstQuery * query)
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{
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GstBufferPool *pool = NULL;
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GstStructure *config;
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GstCaps *caps;
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guint min, max, size, n, i;
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gboolean update_pool, update_allocator;
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GstAllocator *allocator;
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GstAllocationParams params;
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GstGLVideoAllocationParams *glparams;
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GstVideoInfo vinfo;
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GstQtSrc *qt_src = GST_QT_SRC (bsrc);
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if (gst_query_find_allocation_meta (query,
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GST_VIDEO_AFFINE_TRANSFORMATION_META_API_TYPE, NULL)) {
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qt_src->downstream_supports_affine_meta = TRUE;
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} else {
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qt_src->downstream_supports_affine_meta = FALSE;
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}
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gst_query_parse_allocation (query, &caps, NULL);
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if (!caps)
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return FALSE;
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gst_video_info_from_caps (&vinfo, caps);
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n = gst_query_get_n_allocation_pools (query);
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if (n > 0) {
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update_pool = TRUE;
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for (i = 0; i < n; i++) {
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gst_query_parse_nth_allocation_pool (query, i, &pool, &size, &min, &max);
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if (!pool || !GST_IS_GL_BUFFER_POOL (pool)) {
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if (pool)
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gst_object_unref (pool);
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pool = NULL;
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}
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}
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}
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if (!pool) {
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size = vinfo.size;
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min = max = 0;
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update_pool = FALSE;
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}
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if (!qt_src->context && !_find_local_gl_context (qt_src))
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return FALSE;
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if (!qt_window_set_context (qt_src->window, qt_src->context))
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return FALSE;
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if (!pool) {
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if (!qt_src->context || !GST_IS_GL_CONTEXT (qt_src->context))
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return FALSE;
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pool = gst_gl_buffer_pool_new (qt_src->context);
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GST_INFO_OBJECT (qt_src, "No pool, create one ourself %p", pool);
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}
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config = gst_buffer_pool_get_config (pool);
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gst_buffer_pool_config_set_params (config, caps, size, min, max);
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gst_buffer_pool_config_add_option (config, GST_BUFFER_POOL_OPTION_VIDEO_META);
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if (gst_query_find_allocation_meta (query, GST_GL_SYNC_META_API_TYPE, NULL))
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gst_buffer_pool_config_add_option (config,
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GST_BUFFER_POOL_OPTION_GL_SYNC_META);
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if (gst_query_get_n_allocation_params (query) > 0) {
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gst_query_parse_nth_allocation_param (query, 0, &allocator, ¶ms);
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gst_buffer_pool_config_set_allocator (config, allocator, ¶ms);
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GST_INFO_OBJECT (qt_src, "got allocator %p", allocator);
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update_allocator = TRUE;
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} else {
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allocator = NULL;
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gst_allocation_params_init (¶ms);
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update_allocator = FALSE;
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}
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glparams =
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gst_gl_video_allocation_params_new (qt_src->context, ¶ms, &vinfo, 0,
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NULL, GST_GL_TEXTURE_TARGET_2D, GST_GL_RGBA);
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gst_buffer_pool_config_set_gl_allocation_params (config,
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(GstGLAllocationParams *) glparams);
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gst_gl_allocation_params_free ((GstGLAllocationParams *) glparams);
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if (!gst_buffer_pool_set_config (pool, config))
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GST_WARNING_OBJECT (qt_src, "Failed to set buffer pool config");
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if (update_allocator)
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gst_query_set_nth_allocation_param (query, 0, allocator, ¶ms);
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else
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gst_query_add_allocation_param (query, allocator, ¶ms);
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if (allocator)
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gst_object_unref (allocator);
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if (update_pool)
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gst_query_set_nth_allocation_pool (query, 0, pool, size, min, max);
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else
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gst_query_add_allocation_pool (query, pool, size, min, max);
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gst_object_unref (pool);
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GST_INFO_OBJECT (qt_src, "successfully decide_allocation");
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return TRUE;
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}
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static GstFlowReturn
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gst_qt_src_fill (GstPushSrc * psrc, GstBuffer * buffer)
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{
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GstQtSrc *qt_src = GST_QT_SRC (psrc);
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GstGLContext* context = qt_src->context;
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GstGLSyncMeta *sync_meta;
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GST_DEBUG_OBJECT (qt_src, "setting buffer %p", buffer);
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if (!qt_window_set_buffer (qt_src->window, buffer)) {
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GST_ERROR_OBJECT (qt_src, "failed to fill buffer %p", buffer);
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return GST_FLOW_ERROR;
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}
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sync_meta = gst_buffer_get_gl_sync_meta(buffer);
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if (sync_meta)
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gst_gl_sync_meta_wait(sync_meta, context);
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if (!qt_src->downstream_supports_affine_meta) {
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if (qt_src->pending_image_orientation) {
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/* let downstream know the image orientation is vertical filp */
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GstTagList *image_orientation_tag =
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gst_tag_list_new (GST_TAG_IMAGE_ORIENTATION, "flip-rotate-180", NULL);
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gst_pad_push_event (GST_BASE_SRC_PAD (psrc),
|
|
gst_event_new_tag (image_orientation_tag));
|
|
|
|
qt_src->pending_image_orientation = FALSE;
|
|
}
|
|
} else {
|
|
GstVideoAffineTransformationMeta *trans_meta;
|
|
trans_meta = gst_buffer_add_video_affine_transformation_meta (buffer);
|
|
gst_video_affine_transformation_meta_apply_matrix (trans_meta,
|
|
vertical_flip_matrix);
|
|
}
|
|
|
|
GST_DEBUG_OBJECT (qt_src, "buffer fill done %p", buffer);
|
|
|
|
return GST_FLOW_OK;
|
|
}
|
|
|
|
static GstStateChangeReturn
|
|
gst_qt_src_change_state (GstElement * element, GstStateChange transition)
|
|
{
|
|
GstQtSrc *qt_src = GST_QT_SRC (element);
|
|
GstStateChangeReturn ret = GST_STATE_CHANGE_SUCCESS;
|
|
QGuiApplication *app;
|
|
|
|
GST_DEBUG ("changing state: %s => %s",
|
|
gst_element_state_get_name (GST_STATE_TRANSITION_CURRENT (transition)),
|
|
gst_element_state_get_name (GST_STATE_TRANSITION_NEXT (transition)));
|
|
|
|
switch (transition) {
|
|
case GST_STATE_CHANGE_NULL_TO_READY:
|
|
app = static_cast < QGuiApplication * >(QCoreApplication::instance ());
|
|
if (!app) {
|
|
GST_ELEMENT_ERROR (element, RESOURCE, NOT_FOUND,
|
|
("%s", "Failed to connect to Qt"),
|
|
("%s", "Could not retrieve QGuiApplication instance"));
|
|
return GST_STATE_CHANGE_FAILURE;
|
|
}
|
|
|
|
if (!qt_src->window) {
|
|
GST_ELEMENT_ERROR (element, RESOURCE, NOT_FOUND,
|
|
("%s", "Required property \'window\' not set"), (NULL));
|
|
return GST_STATE_CHANGE_FAILURE;
|
|
}
|
|
|
|
if (!qt_window_is_scenegraph_initialized (qt_src->window)) {
|
|
GST_ELEMENT_ERROR (element, RESOURCE, NOT_FOUND,
|
|
("%s", "Could not initialize window system"), (NULL));
|
|
return GST_STATE_CHANGE_FAILURE;
|
|
}
|
|
|
|
qt_window_use_default_fbo (qt_src->window, qt_src->default_fbo);
|
|
|
|
break;
|
|
case GST_STATE_CHANGE_READY_TO_PAUSED:
|
|
break;
|
|
case GST_STATE_CHANGE_PAUSED_TO_PLAYING:
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
|
|
if (ret == GST_STATE_CHANGE_FAILURE)
|
|
return ret;
|
|
|
|
switch (transition) {
|
|
case GST_STATE_CHANGE_PLAYING_TO_PAUSED:
|
|
break;
|
|
case GST_STATE_CHANGE_PAUSED_TO_READY:
|
|
break;
|
|
case GST_STATE_CHANGE_READY_TO_NULL:
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static gboolean
|
|
gst_qt_src_start (GstBaseSrc * basesrc)
|
|
{
|
|
GstQtSrc *qt_src = GST_QT_SRC (basesrc);
|
|
|
|
/* already has get OpenGL configuration from qt */
|
|
if (qt_src->display && qt_src->qt_context)
|
|
return TRUE;
|
|
|
|
if (!qt_window_is_scenegraph_initialized (qt_src->window))
|
|
return FALSE;
|
|
|
|
qt_src->display = qt_window_get_display (qt_src->window);
|
|
qt_src->qt_context = qt_window_get_qt_context (qt_src->window);
|
|
qt_src->context = qt_window_get_context (qt_src->window);
|
|
|
|
if (!qt_src->display || !qt_src->qt_context) {
|
|
GST_ERROR_OBJECT (qt_src,
|
|
"Could not retrieve window system OpenGL configuration");
|
|
return FALSE;
|
|
}
|
|
|
|
GST_DEBUG_OBJECT (qt_src, "Got qt display %p and qt gl context %p",
|
|
qt_src->display, qt_src->qt_context);
|
|
return TRUE;
|
|
}
|
|
|
|
static gboolean
|
|
gst_qt_src_unlock(GstBaseSrc *basesrc)
|
|
{
|
|
GstQtSrc *qt_src = GST_QT_SRC (basesrc);
|
|
if (qt_src->window)
|
|
qt_window_stop (qt_src->window);
|
|
return TRUE;
|
|
}
|
|
|
|
static gboolean
|
|
gst_qt_src_stop (GstBaseSrc * basesrc)
|
|
{
|
|
return TRUE;
|
|
}
|