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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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0be8bc9d98
Basically we know that if we are using mixing, compositor will be able to do video conversion and scaling for us, so avoid adding those usless elements. This optimizes a lot caps negotiation for deeply nested timelines.
148 lines
4 KiB
C
148 lines
4 KiB
C
/* GStreamer Editing Services
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* Copyright (C) 2010 Brandon Lewis <brandon.lewis@collabora.co.uk>
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* 2010 Nokia Corporation
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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:gesvideotestsource
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* @title: GESVideoTestSource
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* @short_description: produce solid colors and patterns
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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 "ges-internal.h"
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#include "ges-track-element.h"
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#include "ges-video-test-source.h"
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#define DEFAULT_VPATTERN GES_VIDEO_TEST_PATTERN_SMPTE
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struct _GESVideoTestSourcePrivate
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{
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GESVideoTestPattern pattern;
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};
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G_DEFINE_TYPE_WITH_PRIVATE (GESVideoTestSource, ges_video_test_source,
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GES_TYPE_VIDEO_SOURCE);
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static GstElement *ges_video_test_source_create_source (GESTrackElement * self);
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static void
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ges_video_test_source_class_init (GESVideoTestSourceClass * klass)
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{
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GESVideoSourceClass *source_class = GES_VIDEO_SOURCE_CLASS (klass);
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source_class->create_source = ges_video_test_source_create_source;
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}
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static void
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ges_video_test_source_init (GESVideoTestSource * self)
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{
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self->priv = ges_video_test_source_get_instance_private (self);
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self->priv->pattern = DEFAULT_VPATTERN;
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}
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static GstElement *
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ges_video_test_source_create_source (GESTrackElement * self)
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{
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GstCaps *caps;
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gint pattern;
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GstElement *testsrc, *capsfilter, *res;
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const gchar *props[] = { "pattern", NULL };
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GPtrArray *elements;
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testsrc = gst_element_factory_make ("videotestsrc", NULL);
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capsfilter = gst_element_factory_make ("capsfilter", NULL);
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pattern = ((GESVideoTestSource *) self)->priv->pattern;
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g_object_set (testsrc, "pattern", pattern, NULL);
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elements = g_ptr_array_new ();
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g_ptr_array_add (elements, capsfilter);
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caps = gst_caps_new_empty_simple ("video/x-raw");
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g_object_set (capsfilter, "caps", caps, NULL);
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gst_caps_unref (caps);
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ges_track_element_add_children_props (self, testsrc, NULL, NULL, props);
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res = ges_source_create_topbin ("videotestsrc", testsrc, elements);
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g_ptr_array_free (elements, TRUE);
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return res;
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}
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/**
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* ges_video_test_source_set_pattern:
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* @self: a #GESVideoTestSource
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* @pattern: a #GESVideoTestPattern
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*
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* Sets the source to use the given @pattern.
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*/
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void
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ges_video_test_source_set_pattern (GESVideoTestSource
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* self, GESVideoTestPattern pattern)
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{
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GstElement *element =
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ges_track_element_get_element (GES_TRACK_ELEMENT (self));
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self->priv->pattern = pattern;
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if (element) {
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GValue val = { 0 };
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g_value_init (&val, GES_VIDEO_TEST_PATTERN_TYPE);
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g_value_set_enum (&val, pattern);
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ges_track_element_set_child_property (GES_TRACK_ELEMENT (self), "pattern",
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&val);
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}
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}
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/**
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* ges_video_test_source_get_pattern:
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* @source: a #GESVideoTestPattern
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*
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* Get the video pattern used by the @source.
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*
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* Returns: The video pattern used by the @source.
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*/
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GESVideoTestPattern
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ges_video_test_source_get_pattern (GESVideoTestSource * source)
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{
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GValue val = { 0 };
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ges_track_element_get_child_property (GES_TRACK_ELEMENT (source), "pattern",
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&val);
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return g_value_get_enum (&val);
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}
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/**
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* ges_video_test_source_new:
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*
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* Creates a new #GESVideoTestSource.
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*
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* Returns: (transfer floating) (nullable): The newly created
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* #GESVideoTestSource, or %NULL if there was an error.
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*/
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GESVideoTestSource *
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ges_video_test_source_new (void)
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{
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return g_object_new (GES_TYPE_VIDEO_TEST_SOURCE, "track-type",
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GES_TRACK_TYPE_VIDEO, NULL);
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}
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