mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-11-24 10:41:04 +00:00
233 lines
9 KiB
C
233 lines
9 KiB
C
/*
|
|
* GStreamer
|
|
* Copyright (C) 2017 Collabora Inc.
|
|
* Author: Nicolas Dufresne <nicolas.dufresne@collabora.com>
|
|
*
|
|
* This library is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Library General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2 of the License, or (at your option) any later version.
|
|
*
|
|
* This library is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* Library General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Library General Public
|
|
* License along with this library; if not, write to the
|
|
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
|
|
* Boston, MA 02110-1301, USA.
|
|
*/
|
|
|
|
/**
|
|
* SECTION:element-fakevideosink
|
|
* @title: fakevideosink
|
|
*
|
|
* This element is the same as fakesink but will pretend to support various
|
|
* allocation meta API like GstVideoMeta in order to prevent memory copies.
|
|
* This is useful for throughput testing and testing zero-copy path while
|
|
* creating a new pipeline.
|
|
*
|
|
* ## Example launch lines
|
|
* |[
|
|
* gst-launch-1.0 videotestsrc ! fakevideosink
|
|
* gst-launch-1.0 videotestsrc ! fpsdisplaysink text-overlay=false video-sink=fakevideosink
|
|
* ]|
|
|
*
|
|
* Since 1.14
|
|
*/
|
|
|
|
#include "gstfakevideosink.h"
|
|
|
|
#include <gst/video/video.h>
|
|
|
|
static GstStaticPadTemplate sink_factory = GST_STATIC_PAD_TEMPLATE ("sink",
|
|
GST_PAD_SINK,
|
|
GST_PAD_ALWAYS,
|
|
GST_STATIC_CAPS (GST_VIDEO_CAPS_MAKE_WITH_FEATURES ("ANY",
|
|
GST_VIDEO_FORMATS_ALL)));
|
|
|
|
G_DEFINE_TYPE (GstFakeVideoSink, gst_fake_video_sink, GST_TYPE_BIN);
|
|
|
|
static gboolean
|
|
gst_fake_video_sink_query (GstPad * pad, GstObject * parent, GstQuery * query)
|
|
{
|
|
GstFakeVideoSink *self = GST_FAKE_VIDEO_SINK (parent);
|
|
GstCaps *caps;
|
|
GstVideoInfo info;
|
|
guint min_buffers = 1;
|
|
|
|
if (GST_QUERY_TYPE (query) != GST_QUERY_ALLOCATION)
|
|
return gst_pad_query_default (pad, parent, query);
|
|
|
|
gst_query_parse_allocation (query, &caps, NULL);
|
|
if (!gst_video_info_from_caps (&info, caps))
|
|
return FALSE;
|
|
|
|
/* Request an extra buffer if we are keeping a ref on the last rendered buffer */
|
|
if (gst_base_sink_is_last_sample_enabled (GST_BASE_SINK (self->child)))
|
|
min_buffers++;
|
|
|
|
gst_query_add_allocation_pool (query, NULL, info.size, min_buffers, 0);
|
|
gst_query_add_allocation_meta (query, GST_VIDEO_META_API_TYPE, NULL);
|
|
gst_query_add_allocation_meta (query, GST_VIDEO_CROP_META_API_TYPE, NULL);
|
|
gst_query_add_allocation_meta (query,
|
|
GST_VIDEO_OVERLAY_COMPOSITION_META_API_TYPE, NULL);
|
|
/* add here any meta API that would help support zero-copy */
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
/* TODO complete the types and make this an utility */
|
|
static void
|
|
gst_fake_video_sink_proxy_properties (GstFakeVideoSink * self,
|
|
GstElement * child)
|
|
{
|
|
static gsize initialized = 0;
|
|
|
|
if (g_once_init_enter (&initialized)) {
|
|
GObjectClass *object_class;
|
|
GParamSpec **properties;
|
|
guint n_properties, i;
|
|
|
|
object_class = G_OBJECT_CLASS (GST_FAKE_VIDEO_SINK_GET_CLASS (self));
|
|
properties = g_object_class_list_properties (G_OBJECT_GET_CLASS (child),
|
|
&n_properties);
|
|
|
|
for (i = 0; i < n_properties; i++) {
|
|
if (properties[i]->owner_type != G_OBJECT_TYPE (child) &&
|
|
properties[i]->owner_type != GST_TYPE_BASE_SINK)
|
|
continue;
|
|
|
|
if (G_IS_PARAM_SPEC_BOOLEAN (properties[i])) {
|
|
GParamSpecBoolean *prop = G_PARAM_SPEC_BOOLEAN (properties[i]);
|
|
g_object_class_install_property (object_class, i + 1,
|
|
g_param_spec_boolean (g_param_spec_get_name (properties[i]),
|
|
g_param_spec_get_nick (properties[i]),
|
|
g_param_spec_get_blurb (properties[i]),
|
|
prop->default_value, properties[i]->flags));
|
|
} else if (G_IS_PARAM_SPEC_INT (properties[i])) {
|
|
GParamSpecInt *prop = G_PARAM_SPEC_INT (properties[i]);
|
|
g_object_class_install_property (object_class, i + 1,
|
|
g_param_spec_int (g_param_spec_get_name (properties[i]),
|
|
g_param_spec_get_nick (properties[i]),
|
|
g_param_spec_get_blurb (properties[i]),
|
|
prop->minimum, prop->maximum, prop->default_value,
|
|
properties[i]->flags));
|
|
} else if (G_IS_PARAM_SPEC_UINT (properties[i])) {
|
|
GParamSpecUInt *prop = G_PARAM_SPEC_UINT (properties[i]);
|
|
g_object_class_install_property (object_class, i + 1,
|
|
g_param_spec_uint (g_param_spec_get_name (properties[i]),
|
|
g_param_spec_get_nick (properties[i]),
|
|
g_param_spec_get_blurb (properties[i]),
|
|
prop->minimum, prop->maximum, prop->default_value,
|
|
properties[i]->flags));
|
|
} else if (G_IS_PARAM_SPEC_INT64 (properties[i])) {
|
|
GParamSpecInt64 *prop = G_PARAM_SPEC_INT64 (properties[i]);
|
|
g_object_class_install_property (object_class, i + 1,
|
|
g_param_spec_int64 (g_param_spec_get_name (properties[i]),
|
|
g_param_spec_get_nick (properties[i]),
|
|
g_param_spec_get_blurb (properties[i]),
|
|
prop->minimum, prop->maximum, prop->default_value,
|
|
properties[i]->flags));
|
|
} else if (G_IS_PARAM_SPEC_UINT64 (properties[i])) {
|
|
GParamSpecUInt64 *prop = G_PARAM_SPEC_UINT64 (properties[i]);
|
|
g_object_class_install_property (object_class, i + 1,
|
|
g_param_spec_uint64 (g_param_spec_get_name (properties[i]),
|
|
g_param_spec_get_nick (properties[i]),
|
|
g_param_spec_get_blurb (properties[i]),
|
|
prop->minimum, prop->maximum, prop->default_value,
|
|
properties[i]->flags));
|
|
} else if (G_IS_PARAM_SPEC_ENUM (properties[i])) {
|
|
GParamSpecEnum *prop = G_PARAM_SPEC_ENUM (properties[i]);
|
|
g_object_class_install_property (object_class, i + 1,
|
|
g_param_spec_enum (g_param_spec_get_name (properties[i]),
|
|
g_param_spec_get_nick (properties[i]),
|
|
g_param_spec_get_blurb (properties[i]),
|
|
properties[i]->value_type, prop->default_value,
|
|
properties[i]->flags));
|
|
} else if (G_IS_PARAM_SPEC_STRING (properties[i])) {
|
|
GParamSpecString *prop = G_PARAM_SPEC_STRING (properties[i]);
|
|
g_object_class_install_property (object_class, i + 1,
|
|
g_param_spec_string (g_param_spec_get_name (properties[i]),
|
|
g_param_spec_get_nick (properties[i]),
|
|
g_param_spec_get_blurb (properties[i]),
|
|
prop->default_value, properties[i]->flags));
|
|
} else if (G_IS_PARAM_SPEC_BOXED (properties[i])) {
|
|
g_object_class_install_property (object_class, i + 1,
|
|
g_param_spec_boxed (g_param_spec_get_name (properties[i]),
|
|
g_param_spec_get_nick (properties[i]),
|
|
g_param_spec_get_blurb (properties[i]),
|
|
properties[i]->value_type, properties[i]->flags));
|
|
}
|
|
}
|
|
|
|
g_free (properties);
|
|
g_once_init_leave (&initialized, 1);
|
|
}
|
|
}
|
|
|
|
static void
|
|
gst_fake_video_sink_init (GstFakeVideoSink * self)
|
|
{
|
|
GstElement *child;
|
|
GstPadTemplate *template = gst_static_pad_template_get (&sink_factory);
|
|
|
|
child = gst_element_factory_make ("fakesink", "sink");
|
|
|
|
if (child) {
|
|
GstPad *sink_pad = gst_element_get_static_pad (child, "sink");
|
|
GstPad *ghost_pad;
|
|
|
|
/* mimic GstVideoSink base class */
|
|
g_object_set (child, "max-lateness", G_GINT64_CONSTANT (20000000), "qos",
|
|
TRUE, "sync", TRUE, NULL);
|
|
|
|
gst_bin_add (GST_BIN (self), child);
|
|
|
|
ghost_pad = gst_ghost_pad_new_from_template ("sink", sink_pad, template);
|
|
gst_object_unref (template);
|
|
gst_element_add_pad (GST_ELEMENT (self), ghost_pad);
|
|
gst_object_unref (sink_pad);
|
|
|
|
gst_pad_set_query_function (ghost_pad, gst_fake_video_sink_query);
|
|
|
|
self->child = child;
|
|
|
|
gst_fake_video_sink_proxy_properties (self, child);
|
|
} else {
|
|
g_warning ("Check your GStreamer installation, "
|
|
"core element 'fakesink' is missing.");
|
|
}
|
|
}
|
|
|
|
static void
|
|
gst_fake_video_sink_get_property (GObject * object, guint property_id,
|
|
GValue * value, GParamSpec * pspec)
|
|
{
|
|
GstFakeVideoSink *self = GST_FAKE_VIDEO_SINK (object);
|
|
g_object_get_property (G_OBJECT (self->child), pspec->name, value);
|
|
}
|
|
|
|
static void
|
|
gst_fake_video_sink_set_property (GObject * object, guint property_id,
|
|
const GValue * value, GParamSpec * pspec)
|
|
{
|
|
GstFakeVideoSink *self = GST_FAKE_VIDEO_SINK (object);
|
|
g_object_set_property (G_OBJECT (self->child), pspec->name, value);
|
|
}
|
|
|
|
static void
|
|
gst_fake_video_sink_class_init (GstFakeVideoSinkClass * klass)
|
|
{
|
|
GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
|
|
GObjectClass *object_class = G_OBJECT_CLASS (klass);
|
|
|
|
object_class->get_property = gst_fake_video_sink_get_property;
|
|
object_class->set_property = gst_fake_video_sink_set_property;
|
|
|
|
gst_element_class_add_static_pad_template (element_class, &sink_factory);
|
|
gst_element_class_set_static_metadata (element_class, "Fake Video Sink",
|
|
"Video/Sink", "Fake video display that allow zero-copy",
|
|
"Nicolas Dufresne <nicolas.dufresne@collabora.com>");
|
|
}
|