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Add RGB to YCbCr matrixing Add tiny color management system (CMS) for video Add quality level for colorspace
676 lines
20 KiB
C
676 lines
20 KiB
C
/* GStreamer
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* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
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* Copyright (C) 2005 David Schleef <ds@schleef.org>
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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., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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/**
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* SECTION:element-videoscale
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* @see_also: videorate, ffmpegcolorspace
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*
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* <refsect2>
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* <para>
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* This element resizes video frames. By default the element will try to
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* negotiate to the same size on the source and sinkpad so that no scaling
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* is needed. It is therefore safe to insert this element in a pipeline to
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* get more robust behaviour without any cost if no scaling is needed.
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* </para>
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* <para>
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* This element supports a wide range of color spaces including various YUV and
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* RGB formats and is therefore generally able to operate anywhere in a
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* pipeline.
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* </para>
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* <title>Example pipelines</title>
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* <para>
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* <programlisting>
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* gst-launch -v filesrc location=videotestsrc.ogg ! oggdemux ! theoradec ! ffmpegcolorspace ! videoscale ! ximagesink
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* </programlisting>
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* Decode an Ogg/Theora and display the video using ximagesink. Since
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* ximagesink cannot perform scaling, the video scaling will be performed by
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* videoscale when you resize the video window.
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* To create the test Ogg/Theora file refer to the documentation of theoraenc.
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* </para>
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* <para>
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* <programlisting>
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* gst-launch -v filesrc location=videotestsrc.ogg ! oggdemux ! theoradec ! videoscale ! video/x-raw-yuv, width=50 ! xvimagesink
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* </programlisting>
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* Decode an Ogg/Theora and display the video using xvimagesink with a width of
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* 50.
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* </para>
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* </refsect2>
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*
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* Last reviewed on 2006-03-02 (0.10.4)
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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 <string.h>
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#include <gst/gst.h>
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#include <gst/video/video.h>
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#include <gst/base/gstbasetransform.h>
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#include <cog/cog.h>
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#include <cog/cogvirtframe.h>
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#include "gstcogutils.h"
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GST_DEBUG_CATEGORY_STATIC (cog_scale_debug);
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#define GST_CAT_DEFAULT cog_scale_debug
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#define GST_TYPE_COG_SCALE \
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(gst_cog_scale_get_type())
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#define GST_COG_SCALE(obj) \
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(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_COG_SCALE,GstCogScale))
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#define GST_COG_SCALE_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_COG_SCALE,GstCogScaleClass))
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#define GST_IS_COG_SCALE(obj) \
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(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_COG_SCALE))
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#define GST_IS_COG_SCALE_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_COG_SCALE))
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typedef struct _GstCogScale GstCogScale;
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typedef struct _GstCogScaleClass GstCogScaleClass;
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/**
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* GstCogScale:
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*
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* Opaque data structure
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*/
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struct _GstCogScale
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{
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GstBaseTransform element;
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int quality;
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/* negotiated stuff */
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GstVideoFormat format;
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guint src_size;
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guint dest_size;
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gint to_width;
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gint to_height;
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gint from_width;
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gint from_height;
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/*< private > */
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};
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struct _GstCogScaleClass
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{
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GstBaseTransformClass parent_class;
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};
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GType gst_cog_scale_get_type (void);
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/* elementfactory information */
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static const GstElementDetails cog_scale_details =
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GST_ELEMENT_DETAILS ("Video scaler",
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"Filter/Effect/Video",
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"Resizes video",
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"Wim Taymans <wim.taymans@chello.be>");
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#define DEFAULT_QUALITY 5
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enum
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{
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PROP_0,
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PROP_QUALITY
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};
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/* can't handle width/height of 1 yet, since we divide a lot by (n-1) */
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#undef GST_VIDEO_SIZE_RANGE
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#define GST_VIDEO_SIZE_RANGE "(int) [ 2, MAX ]"
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#define TEMPLATE_CAPS \
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GST_STATIC_CAPS (GST_VIDEO_CAPS_YUV ("{ I420, YV12, YUY2, UYVY, AYUV, Y42B }") ";" \
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GST_VIDEO_CAPS_ARGB)
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#if 0
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/* not supported */
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GST_VIDEO_CAPS_RGBx
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GST_VIDEO_CAPS_BGRx
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GST_VIDEO_CAPS_xRGB
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GST_VIDEO_CAPS_xBGR
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GST_VIDEO_CAPS_RGBA
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GST_VIDEO_CAPS_BGRA
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GST_VIDEO_CAPS_ABGR GST_VIDEO_CAPS_RGB GST_VIDEO_CAPS_BGR
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GST_VIDEO_CAPS_YUV ("{ Y41B, YVYU }")
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#endif
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static GstStaticPadTemplate gst_cog_scale_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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TEMPLATE_CAPS);
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static GstStaticPadTemplate gst_cog_scale_sink_template =
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GST_STATIC_PAD_TEMPLATE ("sink",
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GST_PAD_SINK,
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GST_PAD_ALWAYS,
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TEMPLATE_CAPS);
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static void gst_cog_scale_base_init (gpointer g_class);
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static void gst_cog_scale_class_init (GstCogScaleClass * klass);
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static void gst_cog_scale_init (GstCogScale * videoscale);
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static void gst_cog_scale_finalize (GstCogScale * videoscale);
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static gboolean gst_cog_scale_src_event (GstBaseTransform * trans,
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GstEvent * event);
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/* base transform vmethods */
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static GstCaps *gst_cog_scale_transform_caps (GstBaseTransform * trans,
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GstPadDirection direction, GstCaps * caps);
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static gboolean gst_cog_scale_set_caps (GstBaseTransform * trans,
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GstCaps * in, GstCaps * out);
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static gboolean gst_cog_scale_get_unit_size (GstBaseTransform * trans,
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GstCaps * caps, guint * size);
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static GstFlowReturn gst_cog_scale_transform (GstBaseTransform * trans,
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GstBuffer * in, GstBuffer * out);
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static void gst_cog_scale_fixate_caps (GstBaseTransform * base,
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GstPadDirection direction, GstCaps * caps, GstCaps * othercaps);
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static void gst_cog_scale_set_property (GObject * object, guint prop_id,
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const GValue * value, GParamSpec * pspec);
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static void gst_cog_scale_get_property (GObject * object, guint prop_id,
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GValue * value, GParamSpec * pspec);
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static GstElementClass *parent_class = NULL;
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GType
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gst_cog_scale_get_type (void)
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{
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static GType cog_scale_type = 0;
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if (!cog_scale_type) {
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static const GTypeInfo cog_scale_info = {
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sizeof (GstCogScaleClass),
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gst_cog_scale_base_init,
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NULL,
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(GClassInitFunc) gst_cog_scale_class_init,
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NULL,
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NULL,
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sizeof (GstCogScale),
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0,
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(GInstanceInitFunc) gst_cog_scale_init,
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};
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cog_scale_type =
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g_type_register_static (GST_TYPE_BASE_TRANSFORM, "GstCogScale",
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&cog_scale_info, 0);
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GST_DEBUG_CATEGORY_INIT (cog_scale_debug, "cogscale", 0, "Cog scale");
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}
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return cog_scale_type;
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}
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static void
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gst_cog_scale_base_init (gpointer g_class)
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{
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GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
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gst_element_class_set_details (element_class, &cog_scale_details);
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gst_element_class_add_pad_template (element_class,
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gst_static_pad_template_get (&gst_cog_scale_src_template));
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gst_element_class_add_pad_template (element_class,
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gst_static_pad_template_get (&gst_cog_scale_sink_template));
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}
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static void
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gst_cog_scale_class_init (GstCogScaleClass * klass)
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{
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GObjectClass *gobject_class;
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GstBaseTransformClass *trans_class;
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gobject_class = (GObjectClass *) klass;
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trans_class = (GstBaseTransformClass *) klass;
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gobject_class->finalize = (GObjectFinalizeFunc) gst_cog_scale_finalize;
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gobject_class->set_property = gst_cog_scale_set_property;
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gobject_class->get_property = gst_cog_scale_get_property;
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g_object_class_install_property (gobject_class, PROP_QUALITY,
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g_param_spec_int ("quality", "quality", "Scaling Quality",
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0, 10, DEFAULT_QUALITY, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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trans_class->transform_caps =
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GST_DEBUG_FUNCPTR (gst_cog_scale_transform_caps);
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trans_class->set_caps = GST_DEBUG_FUNCPTR (gst_cog_scale_set_caps);
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trans_class->get_unit_size = GST_DEBUG_FUNCPTR (gst_cog_scale_get_unit_size);
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trans_class->transform = GST_DEBUG_FUNCPTR (gst_cog_scale_transform);
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trans_class->fixate_caps = GST_DEBUG_FUNCPTR (gst_cog_scale_fixate_caps);
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trans_class->src_event = GST_DEBUG_FUNCPTR (gst_cog_scale_src_event);
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trans_class->passthrough_on_same_caps = TRUE;
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parent_class = g_type_class_peek_parent (klass);
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}
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static void
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gst_cog_scale_init (GstCogScale * videoscale)
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{
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gst_base_transform_set_qos_enabled (GST_BASE_TRANSFORM (videoscale), TRUE);
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videoscale->quality = DEFAULT_QUALITY;
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}
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static void
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gst_cog_scale_finalize (GstCogScale * videoscale)
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{
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G_OBJECT_CLASS (parent_class)->finalize (G_OBJECT (videoscale));
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}
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static void
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gst_cog_scale_set_property (GObject * object, guint prop_id,
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const GValue * value, GParamSpec * pspec)
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{
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GstCogScale *vscale = GST_COG_SCALE (object);
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switch (prop_id) {
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case PROP_QUALITY:
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GST_OBJECT_LOCK (vscale);
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vscale->quality = g_value_get_int (value);
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GST_OBJECT_UNLOCK (vscale);
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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_cog_scale_get_property (GObject * object, guint prop_id, GValue * value,
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GParamSpec * pspec)
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{
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GstCogScale *vscale = GST_COG_SCALE (object);
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switch (prop_id) {
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case PROP_QUALITY:
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GST_OBJECT_LOCK (vscale);
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g_value_set_int (value, vscale->quality);
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GST_OBJECT_UNLOCK (vscale);
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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 GstCaps *
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gst_cog_scale_transform_caps (GstBaseTransform * trans,
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GstPadDirection direction, GstCaps * caps)
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{
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GstCogScale *videoscale;
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GstCaps *ret;
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GstStructure *structure;
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const GValue *par;
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/* this function is always called with a simple caps */
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g_return_val_if_fail (GST_CAPS_IS_SIMPLE (caps), NULL);
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videoscale = GST_COG_SCALE (trans);
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structure = gst_caps_get_structure (caps, 0);
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ret = gst_caps_copy (caps);
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structure = gst_caps_get_structure (ret, 0);
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gst_structure_set (structure,
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"width", GST_TYPE_INT_RANGE, 1, G_MAXINT,
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"height", GST_TYPE_INT_RANGE, 1, G_MAXINT, NULL);
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/* if pixel aspect ratio, make a range of it */
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if ((par = gst_structure_get_value (structure, "pixel-aspect-ratio"))) {
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GstCaps *copy;
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GstStructure *cstruct;
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/* copy input PAR first, this is the prefered PAR */
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gst_structure_set_value (structure, "pixel-aspect-ratio", par);
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/* then make a copy with a fraction range as a second choice */
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copy = gst_caps_copy (ret);
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cstruct = gst_caps_get_structure (copy, 0);
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gst_structure_set (cstruct,
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"pixel-aspect-ratio", GST_TYPE_FRACTION_RANGE, 0, 1, G_MAXINT, 1, NULL);
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/* and append */
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gst_caps_append (ret, copy);
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}
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GST_DEBUG_OBJECT (trans, "returning caps: %" GST_PTR_FORMAT, ret);
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return ret;
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}
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static gboolean
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gst_cog_scale_set_caps (GstBaseTransform * trans, GstCaps * in, GstCaps * out)
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{
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GstCogScale *videoscale;
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gboolean ret;
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videoscale = GST_COG_SCALE (trans);
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ret = gst_video_format_parse_caps (in, &videoscale->format,
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&videoscale->from_width, &videoscale->from_height);
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ret &= gst_video_format_parse_caps (out, NULL,
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&videoscale->to_width, &videoscale->to_height);
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if (!ret)
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goto done;
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videoscale->src_size = gst_video_format_get_size (videoscale->format,
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videoscale->from_width, videoscale->from_height);
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videoscale->dest_size = gst_video_format_get_size (videoscale->format,
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videoscale->to_width, videoscale->to_height);
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/* FIXME: par */
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GST_DEBUG_OBJECT (videoscale, "from=%dx%d, size %d -> to=%dx%d, size %d",
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videoscale->from_width, videoscale->from_height, videoscale->src_size,
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videoscale->to_width, videoscale->to_height, videoscale->dest_size);
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done:
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return ret;
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}
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static gboolean
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gst_cog_scale_get_unit_size (GstBaseTransform * trans, GstCaps * caps,
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guint * size)
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{
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GstCogScale *videoscale;
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GstVideoFormat format;
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gint width, height;
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g_assert (size);
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videoscale = GST_COG_SCALE (trans);
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if (!gst_video_format_parse_caps (caps, &format, &width, &height))
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return FALSE;
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*size = gst_video_format_get_size (format, width, height);
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return TRUE;
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}
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static void
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gst_cog_scale_fixate_caps (GstBaseTransform * base, GstPadDirection direction,
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GstCaps * caps, GstCaps * othercaps)
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{
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GstStructure *ins, *outs;
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const GValue *from_par, *to_par;
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g_return_if_fail (gst_caps_is_fixed (caps));
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GST_DEBUG_OBJECT (base, "trying to fixate othercaps %" GST_PTR_FORMAT
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" based on caps %" GST_PTR_FORMAT, othercaps, caps);
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ins = gst_caps_get_structure (caps, 0);
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outs = gst_caps_get_structure (othercaps, 0);
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from_par = gst_structure_get_value (ins, "pixel-aspect-ratio");
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to_par = gst_structure_get_value (outs, "pixel-aspect-ratio");
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/* we have both PAR but they might not be fixated */
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if (from_par && to_par) {
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gint from_w, from_h, from_par_n, from_par_d, to_par_n, to_par_d;
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gint count = 0, w = 0, h = 0;
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guint num, den;
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/* from_par should be fixed */
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g_return_if_fail (gst_value_is_fixed (from_par));
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from_par_n = gst_value_get_fraction_numerator (from_par);
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from_par_d = gst_value_get_fraction_denominator (from_par);
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/* fixate the out PAR */
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if (!gst_value_is_fixed (to_par)) {
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GST_DEBUG_OBJECT (base, "fixating to_par to %dx%d", from_par_n,
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from_par_d);
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gst_structure_fixate_field_nearest_fraction (outs, "pixel-aspect-ratio",
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from_par_n, from_par_d);
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}
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to_par_n = gst_value_get_fraction_numerator (to_par);
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to_par_d = gst_value_get_fraction_denominator (to_par);
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/* if both width and height are already fixed, we can't do anything
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* about it anymore */
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if (gst_structure_get_int (outs, "width", &w))
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++count;
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if (gst_structure_get_int (outs, "height", &h))
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++count;
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if (count == 2) {
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GST_DEBUG_OBJECT (base, "dimensions already set to %dx%d, not fixating",
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w, h);
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return;
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}
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gst_structure_get_int (ins, "width", &from_w);
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gst_structure_get_int (ins, "height", &from_h);
|
|
|
|
if (!gst_video_calculate_display_ratio (&num, &den, from_w, from_h,
|
|
from_par_n, from_par_d, to_par_n, to_par_d)) {
|
|
GST_ELEMENT_ERROR (base, CORE, NEGOTIATION, (NULL),
|
|
("Error calculating the output scaled size - integer overflow"));
|
|
return;
|
|
}
|
|
|
|
GST_DEBUG_OBJECT (base,
|
|
"scaling input with %dx%d and PAR %d/%d to output PAR %d/%d",
|
|
from_w, from_h, from_par_n, from_par_d, to_par_n, to_par_d);
|
|
GST_DEBUG_OBJECT (base, "resulting output should respect ratio of %d/%d",
|
|
num, den);
|
|
|
|
/* now find a width x height that respects this display ratio.
|
|
* prefer those that have one of w/h the same as the incoming video
|
|
* using wd / hd = num / den */
|
|
|
|
/* if one of the output width or height is fixed, we work from there */
|
|
if (h) {
|
|
GST_DEBUG_OBJECT (base, "height is fixed,scaling width");
|
|
w = (guint) gst_util_uint64_scale_int (h, num, den);
|
|
} else if (w) {
|
|
GST_DEBUG_OBJECT (base, "width is fixed, scaling height");
|
|
h = (guint) gst_util_uint64_scale_int (w, den, num);
|
|
} else {
|
|
/* none of width or height is fixed, figure out both of them based only on
|
|
* the input width and height */
|
|
/* check hd / den is an integer scale factor, and scale wd with the PAR */
|
|
if (from_h % den == 0) {
|
|
GST_DEBUG_OBJECT (base, "keeping video height");
|
|
h = from_h;
|
|
w = (guint) gst_util_uint64_scale_int (h, num, den);
|
|
} else if (from_w % num == 0) {
|
|
GST_DEBUG_OBJECT (base, "keeping video width");
|
|
w = from_w;
|
|
h = (guint) gst_util_uint64_scale_int (w, den, num);
|
|
} else {
|
|
GST_DEBUG_OBJECT (base, "approximating but keeping video height");
|
|
h = from_h;
|
|
w = (guint) gst_util_uint64_scale_int (h, num, den);
|
|
}
|
|
}
|
|
GST_DEBUG_OBJECT (base, "scaling to %dx%d", w, h);
|
|
|
|
/* now fixate */
|
|
gst_structure_fixate_field_nearest_int (outs, "width", w);
|
|
gst_structure_fixate_field_nearest_int (outs, "height", h);
|
|
} else {
|
|
gint width, height;
|
|
|
|
if (gst_structure_get_int (ins, "width", &width)) {
|
|
if (gst_structure_has_field (outs, "width")) {
|
|
gst_structure_fixate_field_nearest_int (outs, "width", width);
|
|
}
|
|
}
|
|
if (gst_structure_get_int (ins, "height", &height)) {
|
|
if (gst_structure_has_field (outs, "height")) {
|
|
gst_structure_fixate_field_nearest_int (outs, "height", height);
|
|
}
|
|
}
|
|
}
|
|
|
|
GST_DEBUG_OBJECT (base, "fixated othercaps to %" GST_PTR_FORMAT, othercaps);
|
|
}
|
|
|
|
#if 0
|
|
static gboolean
|
|
gst_cog_scale_prepare_image (gint format, GstBuffer * buf,
|
|
VSImage * img, VSImage * img_u, VSImage * img_v)
|
|
{
|
|
gboolean res = TRUE;
|
|
|
|
img->pixels = GST_BUFFER_DATA (buf);
|
|
|
|
switch (format) {
|
|
case GST_VIDEO_FORMAT_I420:
|
|
case GST_VIDEO_FORMAT_YV12:
|
|
img_u->pixels = img->pixels + GST_ROUND_UP_2 (img->height) * img->stride;
|
|
img_u->height = GST_ROUND_UP_2 (img->height) / 2;
|
|
img_u->width = GST_ROUND_UP_2 (img->width) / 2;
|
|
img_u->stride = GST_ROUND_UP_4 (img_u->width);
|
|
memcpy (img_v, img_u, sizeof (*img_v));
|
|
img_v->pixels = img_u->pixels + img_u->height * img_u->stride;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
return res;
|
|
}
|
|
#endif
|
|
|
|
static GstFlowReturn
|
|
gst_cog_scale_transform (GstBaseTransform * trans, GstBuffer * in,
|
|
GstBuffer * out)
|
|
{
|
|
GstCogScale *videoscale;
|
|
GstFlowReturn ret = GST_FLOW_OK;
|
|
CogFrame *outframe;
|
|
CogFrame *frame;
|
|
int w, h;
|
|
int quality;
|
|
static const int n_vert_taps[11] = { 1, 1, 2, 2, 2, 2, 4, 4, 4, 4, 4 };
|
|
static const int n_horiz_taps[11] = { 1, 1, 1, 1, 2, 2, 2, 2, 4, 4, 4 };
|
|
|
|
videoscale = GST_COG_SCALE (trans);
|
|
|
|
GST_OBJECT_LOCK (videoscale);
|
|
quality = videoscale->quality;
|
|
GST_OBJECT_UNLOCK (videoscale);
|
|
|
|
frame = gst_cog_buffer_wrap (gst_buffer_ref (in), videoscale->format,
|
|
videoscale->from_width, videoscale->from_height);
|
|
outframe = gst_cog_buffer_wrap (gst_buffer_ref (out), videoscale->format,
|
|
videoscale->to_width, videoscale->to_height);
|
|
|
|
frame = cog_virt_frame_new_unpack (frame);
|
|
|
|
w = videoscale->from_width;
|
|
h = videoscale->from_height;
|
|
while (w >= 2 * videoscale->to_width || h >= 2 * videoscale->to_height) {
|
|
if (w >= 2 * videoscale->to_width) {
|
|
frame = cog_virt_frame_new_horiz_downsample (frame, 3);
|
|
w /= 2;
|
|
}
|
|
if (h >= 2 * videoscale->to_height) {
|
|
frame = cog_virt_frame_new_vert_downsample (frame, 4);
|
|
h /= 2;
|
|
}
|
|
}
|
|
if (w != videoscale->to_width) {
|
|
frame = cog_virt_frame_new_horiz_resample (frame, videoscale->to_width,
|
|
n_horiz_taps[quality]);
|
|
}
|
|
if (h != videoscale->to_height) {
|
|
frame = cog_virt_frame_new_vert_resample (frame, videoscale->to_height,
|
|
n_vert_taps[quality]);
|
|
}
|
|
|
|
switch (videoscale->format) {
|
|
case GST_VIDEO_FORMAT_YUY2:
|
|
frame = cog_virt_frame_new_pack_YUY2 (frame);
|
|
break;
|
|
case GST_VIDEO_FORMAT_UYVY:
|
|
frame = cog_virt_frame_new_pack_UYVY (frame);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
cog_virt_frame_render (frame, outframe);
|
|
cog_frame_unref (frame);
|
|
cog_frame_unref (outframe);
|
|
|
|
GST_LOG_OBJECT (videoscale, "pushing buffer of %d bytes",
|
|
GST_BUFFER_SIZE (out));
|
|
|
|
return ret;
|
|
|
|
/* ERRORS */
|
|
#if 0
|
|
unsupported:
|
|
{
|
|
GST_ELEMENT_ERROR (videoscale, STREAM, NOT_IMPLEMENTED, (NULL),
|
|
("Unsupported format %d for scaling method %d",
|
|
videoscale->format, method));
|
|
return GST_FLOW_ERROR;
|
|
}
|
|
unknown_mode:
|
|
{
|
|
GST_ELEMENT_ERROR (videoscale, STREAM, NOT_IMPLEMENTED, (NULL),
|
|
("Unknown scaling method %d", videoscale->method));
|
|
return GST_FLOW_ERROR;
|
|
}
|
|
#endif
|
|
}
|
|
|
|
static gboolean
|
|
gst_cog_scale_src_event (GstBaseTransform * trans, GstEvent * event)
|
|
{
|
|
GstCogScale *videoscale;
|
|
gboolean ret;
|
|
double a;
|
|
GstStructure *structure;
|
|
|
|
videoscale = GST_COG_SCALE (trans);
|
|
|
|
GST_DEBUG_OBJECT (videoscale, "handling %s event",
|
|
GST_EVENT_TYPE_NAME (event));
|
|
|
|
switch (GST_EVENT_TYPE (event)) {
|
|
case GST_EVENT_NAVIGATION:
|
|
event =
|
|
GST_EVENT (gst_mini_object_make_writable (GST_MINI_OBJECT (event)));
|
|
|
|
structure = (GstStructure *) gst_event_get_structure (event);
|
|
if (gst_structure_get_double (structure, "pointer_x", &a)) {
|
|
gst_structure_set (structure, "pointer_x", G_TYPE_DOUBLE,
|
|
a * videoscale->from_width / videoscale->to_width, NULL);
|
|
}
|
|
if (gst_structure_get_double (structure, "pointer_y", &a)) {
|
|
gst_structure_set (structure, "pointer_y", G_TYPE_DOUBLE,
|
|
a * videoscale->from_height / videoscale->to_height, NULL);
|
|
}
|
|
break;
|
|
case GST_EVENT_QOS:
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
ret = GST_BASE_TRANSFORM_CLASS (parent_class)->src_event (trans, event);
|
|
|
|
return ret;
|
|
}
|