mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-11-06 01:19:38 +00:00
e7f13ede0f
Our pad templates already expose ANY feature and the code supports that case even if only for the passthrough, we should not disable that feature. Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/4733>
135 lines
4.3 KiB
C
135 lines
4.3 KiB
C
/* GStreamer
|
|
* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
|
|
* Copyright (C) 2005-2012 David Schleef <ds@schleef.org>
|
|
*
|
|
* 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-videoscale
|
|
* @title: videoscale
|
|
* @see_also: videorate, videoconvert
|
|
*
|
|
* This element resizes video frames. By default the element will try to
|
|
* negotiate to the same size on the source and sinkpad so that no scaling
|
|
* is needed. It is therefore safe to insert this element in a pipeline to
|
|
* get more robust behaviour without any cost if no scaling is needed.
|
|
*
|
|
* This element supports a wide range of color spaces including various YUV and
|
|
* RGB formats and is therefore generally able to operate anywhere in a
|
|
* pipeline.
|
|
*
|
|
* ## Example pipelines
|
|
* |[
|
|
* gst-launch-1.0 -v filesrc location=videotestsrc.ogg ! oggdemux ! theoradec ! videoconvert ! videoscale ! autovideosink
|
|
* ]|
|
|
* Decode an Ogg/Theora and display the video. If the video sink chosen
|
|
* cannot perform scaling, the video scaling will be performed by videoscale
|
|
* when you resize the video window.
|
|
* To create the test Ogg/Theora file refer to the documentation of theoraenc.
|
|
* |[
|
|
* gst-launch-1.0 -v filesrc location=videotestsrc.ogg ! oggdemux ! theoradec ! videoconvert ! videoscale ! video/x-raw,width=100 ! autovideosink
|
|
* ]|
|
|
* Decode an Ogg/Theora and display the video with a width of 100.
|
|
*
|
|
*/
|
|
#ifdef HAVE_CONFIG_H
|
|
#include "config.h"
|
|
#endif
|
|
|
|
#define DEFAULT_PROP_GAMMA_DECODE FALSE
|
|
|
|
#include "gstvideoscale.h"
|
|
|
|
G_DEFINE_TYPE (GstVideoScale, gst_video_scale, GST_TYPE_VIDEO_CONVERT_SCALE);
|
|
GST_ELEMENT_REGISTER_DEFINE (videoscale, "videoscale",
|
|
GST_RANK_MARGINAL, gst_video_scale_get_type ());
|
|
|
|
enum
|
|
{
|
|
PROP_0,
|
|
PROP_GAMMA_DECODE
|
|
};
|
|
|
|
static void
|
|
gst_video_scale_get_property (GObject * object, guint prop_id,
|
|
GValue * value, GParamSpec * pspec)
|
|
{
|
|
switch (prop_id) {
|
|
case PROP_GAMMA_DECODE:
|
|
{
|
|
gint mode;
|
|
|
|
g_object_get (object, "gamma-mode", &mode, NULL);
|
|
g_value_set_boolean (value, mode == GST_VIDEO_GAMMA_MODE_REMAP);
|
|
|
|
break;
|
|
}
|
|
default:
|
|
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void
|
|
gst_video_scale_set_property (GObject * object, guint prop_id,
|
|
const GValue * value, GParamSpec * pspec)
|
|
{
|
|
switch (prop_id) {
|
|
case PROP_GAMMA_DECODE:
|
|
{
|
|
if (g_value_get_boolean (value))
|
|
g_object_set (object, "gamma-mode", GST_VIDEO_GAMMA_MODE_REMAP, NULL);
|
|
else
|
|
g_object_set (object, "gamma-mode", GST_VIDEO_GAMMA_MODE_NONE, NULL);
|
|
|
|
break;
|
|
}
|
|
default:
|
|
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void
|
|
gst_video_scale_class_init (GstVideoScaleClass * klass)
|
|
{
|
|
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
|
|
GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
|
|
GstVideoConvertScaleClass *convertscale_class =
|
|
GST_VIDEO_CONVERT_SCALE_CLASS (klass);
|
|
|
|
gobject_class->set_property = gst_video_scale_set_property;
|
|
gobject_class->get_property = gst_video_scale_get_property;
|
|
|
|
g_object_class_install_property (gobject_class, PROP_GAMMA_DECODE,
|
|
g_param_spec_boolean ("gamma-decode", "Gamma Decode",
|
|
"Decode gamma before scaling", DEFAULT_PROP_GAMMA_DECODE,
|
|
G_PARAM_CONSTRUCT | G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
|
|
|
|
gst_element_class_set_static_metadata (element_class,
|
|
"Video scaler", "Filter/Converter/Video/Scaler",
|
|
"Resizes video", "Wim Taymans <wim.taymans@gmail.com>");
|
|
|
|
convertscale_class->converts = FALSE;
|
|
convertscale_class->scales = TRUE;
|
|
}
|
|
|
|
static void
|
|
gst_video_scale_init (GstVideoScale * self)
|
|
{
|
|
|
|
}
|