mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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Modernizing the documentation, making it simpler to read an modify and allowing us to possibly switch to hotdoc in the future.
1168 lines
42 KiB
C
1168 lines
42 KiB
C
/* GStreamer
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* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
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* Copyright (C) 2005-2012 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., 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-videoscale
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* @title: videoscale
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* @see_also: videorate, videoconvert
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*
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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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*
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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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*
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* ## Example pipelines
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* |[
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* gst-launch-1.0 -v filesrc location=videotestsrc.ogg ! oggdemux ! theoradec ! videoconvert ! videoscale ! autovideosink
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* ]|
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* Decode an Ogg/Theora and display the video. If the video sink chosen
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* cannot perform scaling, the video scaling will be performed by videoscale
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* 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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* |[
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* gst-launch-1.0 -v filesrc location=videotestsrc.ogg ! oggdemux ! theoradec ! videoconvert ! videoscale ! video/x-raw,width=100 ! autovideosink
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* ]|
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* Decode an Ogg/Theora and display the video with a width of 100.
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*
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*/
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/*
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* Formulas for PAR, DAR, width and height relations:
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*
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* dar_n w par_n
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* ----- = - * -----
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* dar_d h par_d
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*
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* par_n h dar_n
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* ----- = - * -----
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* par_d w dar_d
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*
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* dar_n par_d
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* w = h * ----- * -----
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* dar_d par_n
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*
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* dar_d par_n
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* h = w * ----- * -----
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* dar_n par_d
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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 <math.h>
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#include <gst/video/gstvideometa.h>
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#include <gst/video/gstvideopool.h>
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#include "gstvideoscale.h"
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#define GST_CAT_DEFAULT video_scale_debug
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GST_DEBUG_CATEGORY_STATIC (video_scale_debug);
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GST_DEBUG_CATEGORY_STATIC (CAT_PERFORMANCE);
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#define DEFAULT_PROP_METHOD GST_VIDEO_SCALE_BILINEAR
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#define DEFAULT_PROP_ADD_BORDERS TRUE
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#define DEFAULT_PROP_SHARPNESS 1.0
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#define DEFAULT_PROP_SHARPEN 0.0
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#define DEFAULT_PROP_DITHER FALSE
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#define DEFAULT_PROP_SUBMETHOD 1
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#define DEFAULT_PROP_ENVELOPE 2.0
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#define DEFAULT_PROP_GAMMA_DECODE FALSE
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#define DEFAULT_PROP_N_THREADS 1
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enum
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{
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PROP_0,
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PROP_METHOD,
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PROP_ADD_BORDERS,
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PROP_SHARPNESS,
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PROP_SHARPEN,
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PROP_DITHER,
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PROP_SUBMETHOD,
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PROP_ENVELOPE,
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PROP_GAMMA_DECODE,
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PROP_N_THREADS
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};
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#undef GST_VIDEO_SIZE_RANGE
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#define GST_VIDEO_SIZE_RANGE "(int) [ 1, 32767]"
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/* FIXME: add v210 support
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* FIXME: add v216 support
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* FIXME: add UYVP support
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* FIXME: add A420 support
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* FIXME: add YUV9 support
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* FIXME: add YVU9 support
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* FIXME: add IYU1 support
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* FIXME: add r210 support
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*/
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#define GST_VIDEO_FORMATS GST_VIDEO_FORMATS_ALL
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static GstStaticCaps gst_video_scale_format_caps =
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GST_STATIC_CAPS (GST_VIDEO_CAPS_MAKE (GST_VIDEO_FORMATS) ";"
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GST_VIDEO_CAPS_MAKE_WITH_FEATURES ("ANY", GST_VIDEO_FORMATS));
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#define GST_TYPE_VIDEO_SCALE_METHOD (gst_video_scale_method_get_type())
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static GType
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gst_video_scale_method_get_type (void)
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{
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static GType video_scale_method_type = 0;
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static const GEnumValue video_scale_methods[] = {
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{GST_VIDEO_SCALE_NEAREST, "Nearest Neighbour", "nearest-neighbour"},
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{GST_VIDEO_SCALE_BILINEAR, "Bilinear (2-tap)", "bilinear"},
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{GST_VIDEO_SCALE_4TAP, "4-tap Sinc", "4-tap"},
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{GST_VIDEO_SCALE_LANCZOS, "Lanczos", "lanczos"},
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{GST_VIDEO_SCALE_BILINEAR2, "Bilinear (multi-tap)", "bilinear2"},
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{GST_VIDEO_SCALE_SINC, "Sinc (multi-tap)", "sinc"},
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{GST_VIDEO_SCALE_HERMITE, "Hermite (multi-tap)", "hermite"},
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{GST_VIDEO_SCALE_SPLINE, "Spline (multi-tap)", "spline"},
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{GST_VIDEO_SCALE_CATROM, "Catmull-Rom (multi-tap)", "catrom"},
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{GST_VIDEO_SCALE_MITCHELL, "Mitchell (multi-tap)", "mitchell"},
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{0, NULL, NULL},
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};
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if (!video_scale_method_type) {
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video_scale_method_type =
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g_enum_register_static ("GstVideoScaleMethod", video_scale_methods);
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}
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return video_scale_method_type;
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}
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static GstCaps *
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gst_video_scale_get_capslist (void)
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{
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static GstCaps *caps = NULL;
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static volatile gsize inited = 0;
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if (g_once_init_enter (&inited)) {
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caps = gst_static_caps_get (&gst_video_scale_format_caps);
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g_once_init_leave (&inited, 1);
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}
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return caps;
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}
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static GstPadTemplate *
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gst_video_scale_src_template_factory (void)
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{
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return gst_pad_template_new ("src", GST_PAD_SRC, GST_PAD_ALWAYS,
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gst_video_scale_get_capslist ());
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}
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static GstPadTemplate *
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gst_video_scale_sink_template_factory (void)
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{
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return gst_pad_template_new ("sink", GST_PAD_SINK, GST_PAD_ALWAYS,
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gst_video_scale_get_capslist ());
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}
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static void gst_video_scale_finalize (GstVideoScale * videoscale);
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static gboolean gst_video_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_video_scale_transform_caps (GstBaseTransform * trans,
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GstPadDirection direction, GstCaps * caps, GstCaps * filter);
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static GstCaps *gst_video_scale_fixate_caps (GstBaseTransform * base,
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GstPadDirection direction, GstCaps * caps, GstCaps * othercaps);
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static gboolean gst_video_scale_set_info (GstVideoFilter * filter,
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GstCaps * in, GstVideoInfo * in_info, GstCaps * out,
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GstVideoInfo * out_info);
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static GstFlowReturn gst_video_scale_transform_frame (GstVideoFilter * filter,
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GstVideoFrame * in, GstVideoFrame * out);
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static void gst_video_scale_set_property (GObject * object, guint prop_id,
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const GValue * value, GParamSpec * pspec);
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static void gst_video_scale_get_property (GObject * object, guint prop_id,
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GValue * value, GParamSpec * pspec);
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#define gst_video_scale_parent_class parent_class
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G_DEFINE_TYPE (GstVideoScale, gst_video_scale, GST_TYPE_VIDEO_FILTER);
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static void
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gst_video_scale_class_init (GstVideoScaleClass * klass)
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{
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GObjectClass *gobject_class = (GObjectClass *) klass;
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GstElementClass *element_class = (GstElementClass *) klass;
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GstBaseTransformClass *trans_class = (GstBaseTransformClass *) klass;
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GstVideoFilterClass *filter_class = (GstVideoFilterClass *) klass;
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gobject_class->finalize = (GObjectFinalizeFunc) gst_video_scale_finalize;
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gobject_class->set_property = gst_video_scale_set_property;
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gobject_class->get_property = gst_video_scale_get_property;
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g_object_class_install_property (gobject_class, PROP_METHOD,
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g_param_spec_enum ("method", "method", "method",
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GST_TYPE_VIDEO_SCALE_METHOD, DEFAULT_PROP_METHOD,
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G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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g_object_class_install_property (gobject_class, PROP_ADD_BORDERS,
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g_param_spec_boolean ("add-borders", "Add Borders",
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"Add black borders if necessary to keep the display aspect ratio",
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DEFAULT_PROP_ADD_BORDERS,
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G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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g_object_class_install_property (gobject_class, PROP_SHARPNESS,
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g_param_spec_double ("sharpness", "Sharpness",
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"Sharpness of filter", 0.5, 1.5, DEFAULT_PROP_SHARPNESS,
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G_PARAM_CONSTRUCT | G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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g_object_class_install_property (gobject_class, PROP_SHARPEN,
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g_param_spec_double ("sharpen", "Sharpen",
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"Sharpening", 0.0, 1.0, DEFAULT_PROP_SHARPEN,
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G_PARAM_CONSTRUCT | G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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g_object_class_install_property (gobject_class, PROP_DITHER,
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g_param_spec_boolean ("dither", "Dither",
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"Add dither (only used for Lanczos method)",
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DEFAULT_PROP_DITHER,
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G_PARAM_CONSTRUCT | G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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#if 0
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/* I am hiding submethod for now, since it's poorly named, poorly
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* documented, and will probably just get people into trouble. */
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g_object_class_install_property (gobject_class, PROP_SUBMETHOD,
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g_param_spec_int ("submethod", "submethod",
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"submethod", 0, 3, DEFAULT_PROP_SUBMETHOD,
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G_PARAM_CONSTRUCT | G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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#endif
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g_object_class_install_property (gobject_class, PROP_ENVELOPE,
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g_param_spec_double ("envelope", "Envelope",
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"Size of filter envelope", 1.0, 5.0, DEFAULT_PROP_ENVELOPE,
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G_PARAM_CONSTRUCT | G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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g_object_class_install_property (gobject_class, PROP_GAMMA_DECODE,
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g_param_spec_boolean ("gamma-decode", "Gamma Decode",
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"Decode gamma before scaling", DEFAULT_PROP_GAMMA_DECODE,
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G_PARAM_CONSTRUCT | G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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g_object_class_install_property (gobject_class, PROP_N_THREADS,
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g_param_spec_uint ("n-threads", "Threads",
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"Maximum number of threads to use", 0, G_MAXUINT,
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DEFAULT_PROP_N_THREADS,
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G_PARAM_CONSTRUCT | G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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gst_element_class_set_static_metadata (element_class,
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"Video scaler", "Filter/Converter/Video/Scaler",
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"Resizes video", "Wim Taymans <wim.taymans@gmail.com>");
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gst_element_class_add_pad_template (element_class,
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gst_video_scale_sink_template_factory ());
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gst_element_class_add_pad_template (element_class,
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gst_video_scale_src_template_factory ());
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trans_class->transform_caps =
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GST_DEBUG_FUNCPTR (gst_video_scale_transform_caps);
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trans_class->fixate_caps = GST_DEBUG_FUNCPTR (gst_video_scale_fixate_caps);
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trans_class->src_event = GST_DEBUG_FUNCPTR (gst_video_scale_src_event);
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filter_class->set_info = GST_DEBUG_FUNCPTR (gst_video_scale_set_info);
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filter_class->transform_frame =
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GST_DEBUG_FUNCPTR (gst_video_scale_transform_frame);
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}
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static void
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gst_video_scale_init (GstVideoScale * videoscale)
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{
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videoscale->method = DEFAULT_PROP_METHOD;
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videoscale->add_borders = DEFAULT_PROP_ADD_BORDERS;
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videoscale->submethod = DEFAULT_PROP_SUBMETHOD;
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videoscale->sharpness = DEFAULT_PROP_SHARPNESS;
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videoscale->sharpen = DEFAULT_PROP_SHARPEN;
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videoscale->dither = DEFAULT_PROP_DITHER;
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videoscale->envelope = DEFAULT_PROP_ENVELOPE;
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videoscale->gamma_decode = DEFAULT_PROP_GAMMA_DECODE;
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videoscale->n_threads = DEFAULT_PROP_N_THREADS;
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}
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static void
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gst_video_scale_finalize (GstVideoScale * videoscale)
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{
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if (videoscale->convert)
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gst_video_converter_free (videoscale->convert);
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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_video_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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GstVideoScale *vscale = GST_VIDEO_SCALE (object);
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switch (prop_id) {
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case PROP_METHOD:
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GST_OBJECT_LOCK (vscale);
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vscale->method = g_value_get_enum (value);
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GST_OBJECT_UNLOCK (vscale);
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break;
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case PROP_ADD_BORDERS:
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GST_OBJECT_LOCK (vscale);
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vscale->add_borders = g_value_get_boolean (value);
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GST_OBJECT_UNLOCK (vscale);
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gst_base_transform_reconfigure_src (GST_BASE_TRANSFORM_CAST (vscale));
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break;
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case PROP_SHARPNESS:
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GST_OBJECT_LOCK (vscale);
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vscale->sharpness = g_value_get_double (value);
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GST_OBJECT_UNLOCK (vscale);
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break;
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case PROP_SHARPEN:
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GST_OBJECT_LOCK (vscale);
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vscale->sharpen = g_value_get_double (value);
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GST_OBJECT_UNLOCK (vscale);
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break;
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case PROP_DITHER:
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GST_OBJECT_LOCK (vscale);
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vscale->dither = g_value_get_boolean (value);
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GST_OBJECT_UNLOCK (vscale);
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break;
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case PROP_SUBMETHOD:
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GST_OBJECT_LOCK (vscale);
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vscale->submethod = g_value_get_int (value);
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GST_OBJECT_UNLOCK (vscale);
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break;
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case PROP_ENVELOPE:
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GST_OBJECT_LOCK (vscale);
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vscale->envelope = g_value_get_double (value);
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GST_OBJECT_UNLOCK (vscale);
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break;
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case PROP_GAMMA_DECODE:
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GST_OBJECT_LOCK (vscale);
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vscale->gamma_decode = g_value_get_boolean (value);
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GST_OBJECT_UNLOCK (vscale);
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break;
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case PROP_N_THREADS:
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GST_OBJECT_LOCK (vscale);
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vscale->n_threads = g_value_get_uint (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_video_scale_get_property (GObject * object, guint prop_id, GValue * value,
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GParamSpec * pspec)
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{
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GstVideoScale *vscale = GST_VIDEO_SCALE (object);
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switch (prop_id) {
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case PROP_METHOD:
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GST_OBJECT_LOCK (vscale);
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g_value_set_enum (value, vscale->method);
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GST_OBJECT_UNLOCK (vscale);
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break;
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case PROP_ADD_BORDERS:
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GST_OBJECT_LOCK (vscale);
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g_value_set_boolean (value, vscale->add_borders);
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GST_OBJECT_UNLOCK (vscale);
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break;
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case PROP_SHARPNESS:
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GST_OBJECT_LOCK (vscale);
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g_value_set_double (value, vscale->sharpness);
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GST_OBJECT_UNLOCK (vscale);
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break;
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case PROP_SHARPEN:
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GST_OBJECT_LOCK (vscale);
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g_value_set_double (value, vscale->sharpen);
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GST_OBJECT_UNLOCK (vscale);
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break;
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case PROP_DITHER:
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GST_OBJECT_LOCK (vscale);
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g_value_set_boolean (value, vscale->dither);
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GST_OBJECT_UNLOCK (vscale);
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break;
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case PROP_SUBMETHOD:
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GST_OBJECT_LOCK (vscale);
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g_value_set_int (value, vscale->submethod);
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GST_OBJECT_UNLOCK (vscale);
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break;
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case PROP_ENVELOPE:
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GST_OBJECT_LOCK (vscale);
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g_value_set_double (value, vscale->envelope);
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GST_OBJECT_UNLOCK (vscale);
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break;
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case PROP_GAMMA_DECODE:
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GST_OBJECT_LOCK (vscale);
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g_value_set_boolean (value, vscale->gamma_decode);
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GST_OBJECT_UNLOCK (vscale);
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break;
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case PROP_N_THREADS:
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GST_OBJECT_LOCK (vscale);
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g_value_set_uint (value, vscale->n_threads);
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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_video_scale_transform_caps (GstBaseTransform * trans,
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GstPadDirection direction, GstCaps * caps, GstCaps * filter)
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{
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GstCaps *ret;
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GstStructure *structure;
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GstCapsFeatures *features;
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gint i, n;
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GST_DEBUG_OBJECT (trans,
|
|
"Transforming caps %" GST_PTR_FORMAT " in direction %s", caps,
|
|
(direction == GST_PAD_SINK) ? "sink" : "src");
|
|
|
|
ret = gst_caps_new_empty ();
|
|
n = gst_caps_get_size (caps);
|
|
for (i = 0; i < n; i++) {
|
|
structure = gst_caps_get_structure (caps, i);
|
|
features = gst_caps_get_features (caps, i);
|
|
|
|
/* If this is already expressed by the existing caps
|
|
* skip this structure */
|
|
if (i > 0 && gst_caps_is_subset_structure_full (ret, structure, features))
|
|
continue;
|
|
|
|
/* make copy */
|
|
structure = gst_structure_copy (structure);
|
|
|
|
/* If the features are non-sysmem we can only do passthrough */
|
|
if (!gst_caps_features_is_any (features)
|
|
&& gst_caps_features_is_equal (features,
|
|
GST_CAPS_FEATURES_MEMORY_SYSTEM_MEMORY)) {
|
|
gst_structure_set (structure, "width", GST_TYPE_INT_RANGE, 1, G_MAXINT,
|
|
"height", GST_TYPE_INT_RANGE, 1, G_MAXINT, NULL);
|
|
|
|
/* if pixel aspect ratio, make a range of it */
|
|
if (gst_structure_has_field (structure, "pixel-aspect-ratio")) {
|
|
gst_structure_set (structure, "pixel-aspect-ratio",
|
|
GST_TYPE_FRACTION_RANGE, 1, G_MAXINT, G_MAXINT, 1, NULL);
|
|
}
|
|
}
|
|
gst_caps_append_structure_full (ret, structure,
|
|
gst_caps_features_copy (features));
|
|
}
|
|
|
|
if (filter) {
|
|
GstCaps *intersection;
|
|
|
|
intersection =
|
|
gst_caps_intersect_full (filter, ret, GST_CAPS_INTERSECT_FIRST);
|
|
gst_caps_unref (ret);
|
|
ret = intersection;
|
|
}
|
|
|
|
GST_DEBUG_OBJECT (trans, "returning caps: %" GST_PTR_FORMAT, ret);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static gboolean
|
|
gst_video_scale_set_info (GstVideoFilter * filter, GstCaps * in,
|
|
GstVideoInfo * in_info, GstCaps * out, GstVideoInfo * out_info)
|
|
{
|
|
GstVideoScale *videoscale = GST_VIDEO_SCALE (filter);
|
|
gint from_dar_n, from_dar_d, to_dar_n, to_dar_d;
|
|
|
|
if (!gst_util_fraction_multiply (in_info->width,
|
|
in_info->height, in_info->par_n, in_info->par_d, &from_dar_n,
|
|
&from_dar_d)) {
|
|
from_dar_n = from_dar_d = -1;
|
|
}
|
|
|
|
if (!gst_util_fraction_multiply (out_info->width,
|
|
out_info->height, out_info->par_n, out_info->par_d, &to_dar_n,
|
|
&to_dar_d)) {
|
|
to_dar_n = to_dar_d = -1;
|
|
}
|
|
|
|
videoscale->borders_w = videoscale->borders_h = 0;
|
|
if (to_dar_n != from_dar_n || to_dar_d != from_dar_d) {
|
|
if (videoscale->add_borders) {
|
|
gint n, d, to_h, to_w;
|
|
|
|
if (from_dar_n != -1 && from_dar_d != -1
|
|
&& gst_util_fraction_multiply (from_dar_n, from_dar_d,
|
|
out_info->par_d, out_info->par_n, &n, &d)) {
|
|
to_h = gst_util_uint64_scale_int (out_info->width, d, n);
|
|
if (to_h <= out_info->height) {
|
|
videoscale->borders_h = out_info->height - to_h;
|
|
videoscale->borders_w = 0;
|
|
} else {
|
|
to_w = gst_util_uint64_scale_int (out_info->height, n, d);
|
|
g_assert (to_w <= out_info->width);
|
|
videoscale->borders_h = 0;
|
|
videoscale->borders_w = out_info->width - to_w;
|
|
}
|
|
} else {
|
|
GST_WARNING_OBJECT (videoscale, "Can't calculate borders");
|
|
}
|
|
} else {
|
|
GST_WARNING_OBJECT (videoscale, "Can't keep DAR!");
|
|
}
|
|
}
|
|
|
|
if (in_info->width == out_info->width && in_info->height == out_info->height
|
|
&& videoscale->borders_w == 0 && videoscale->borders_h == 0) {
|
|
gst_base_transform_set_passthrough (GST_BASE_TRANSFORM (filter), TRUE);
|
|
} else {
|
|
GstStructure *options;
|
|
GST_CAT_DEBUG_OBJECT (CAT_PERFORMANCE, filter, "setup videoscaling");
|
|
gst_base_transform_set_passthrough (GST_BASE_TRANSFORM (filter), FALSE);
|
|
|
|
options = gst_structure_new_empty ("videoscale");
|
|
|
|
switch (videoscale->method) {
|
|
case GST_VIDEO_SCALE_NEAREST:
|
|
gst_structure_set (options,
|
|
GST_VIDEO_CONVERTER_OPT_RESAMPLER_METHOD,
|
|
GST_TYPE_VIDEO_RESAMPLER_METHOD, GST_VIDEO_RESAMPLER_METHOD_NEAREST,
|
|
NULL);
|
|
break;
|
|
case GST_VIDEO_SCALE_BILINEAR:
|
|
gst_structure_set (options,
|
|
GST_VIDEO_CONVERTER_OPT_RESAMPLER_METHOD,
|
|
GST_TYPE_VIDEO_RESAMPLER_METHOD, GST_VIDEO_RESAMPLER_METHOD_LINEAR,
|
|
GST_VIDEO_RESAMPLER_OPT_MAX_TAPS, G_TYPE_INT, 2, NULL);
|
|
break;
|
|
case GST_VIDEO_SCALE_4TAP:
|
|
gst_structure_set (options,
|
|
GST_VIDEO_CONVERTER_OPT_RESAMPLER_METHOD,
|
|
GST_TYPE_VIDEO_RESAMPLER_METHOD, GST_VIDEO_RESAMPLER_METHOD_SINC,
|
|
GST_VIDEO_RESAMPLER_OPT_MAX_TAPS, G_TYPE_INT, 4, NULL);
|
|
break;
|
|
case GST_VIDEO_SCALE_LANCZOS:
|
|
gst_structure_set (options,
|
|
GST_VIDEO_CONVERTER_OPT_RESAMPLER_METHOD,
|
|
GST_TYPE_VIDEO_RESAMPLER_METHOD, GST_VIDEO_RESAMPLER_METHOD_LANCZOS,
|
|
NULL);
|
|
break;
|
|
case GST_VIDEO_SCALE_BILINEAR2:
|
|
gst_structure_set (options,
|
|
GST_VIDEO_CONVERTER_OPT_RESAMPLER_METHOD,
|
|
GST_TYPE_VIDEO_RESAMPLER_METHOD, GST_VIDEO_RESAMPLER_METHOD_LINEAR,
|
|
NULL);
|
|
break;
|
|
case GST_VIDEO_SCALE_SINC:
|
|
gst_structure_set (options,
|
|
GST_VIDEO_CONVERTER_OPT_RESAMPLER_METHOD,
|
|
GST_TYPE_VIDEO_RESAMPLER_METHOD, GST_VIDEO_RESAMPLER_METHOD_SINC,
|
|
NULL);
|
|
break;
|
|
case GST_VIDEO_SCALE_HERMITE:
|
|
gst_structure_set (options,
|
|
GST_VIDEO_CONVERTER_OPT_RESAMPLER_METHOD,
|
|
GST_TYPE_VIDEO_RESAMPLER_METHOD, GST_VIDEO_RESAMPLER_METHOD_CUBIC,
|
|
GST_VIDEO_RESAMPLER_OPT_CUBIC_B, G_TYPE_DOUBLE, (gdouble) 0.0,
|
|
GST_VIDEO_RESAMPLER_OPT_CUBIC_C, G_TYPE_DOUBLE, (gdouble) 0.0,
|
|
NULL);
|
|
break;
|
|
case GST_VIDEO_SCALE_SPLINE:
|
|
gst_structure_set (options,
|
|
GST_VIDEO_CONVERTER_OPT_RESAMPLER_METHOD,
|
|
GST_TYPE_VIDEO_RESAMPLER_METHOD, GST_VIDEO_RESAMPLER_METHOD_CUBIC,
|
|
GST_VIDEO_RESAMPLER_OPT_CUBIC_B, G_TYPE_DOUBLE, (gdouble) 1.0,
|
|
GST_VIDEO_RESAMPLER_OPT_CUBIC_C, G_TYPE_DOUBLE, (gdouble) 0.0,
|
|
NULL);
|
|
break;
|
|
case GST_VIDEO_SCALE_CATROM:
|
|
gst_structure_set (options,
|
|
GST_VIDEO_CONVERTER_OPT_RESAMPLER_METHOD,
|
|
GST_TYPE_VIDEO_RESAMPLER_METHOD, GST_VIDEO_RESAMPLER_METHOD_CUBIC,
|
|
GST_VIDEO_RESAMPLER_OPT_CUBIC_B, G_TYPE_DOUBLE, (gdouble) 0.0,
|
|
GST_VIDEO_RESAMPLER_OPT_CUBIC_C, G_TYPE_DOUBLE, (gdouble) 0.5,
|
|
NULL);
|
|
break;
|
|
case GST_VIDEO_SCALE_MITCHELL:
|
|
gst_structure_set (options,
|
|
GST_VIDEO_CONVERTER_OPT_RESAMPLER_METHOD,
|
|
GST_TYPE_VIDEO_RESAMPLER_METHOD, GST_VIDEO_RESAMPLER_METHOD_CUBIC,
|
|
GST_VIDEO_RESAMPLER_OPT_CUBIC_B, G_TYPE_DOUBLE, (gdouble) 1.0 / 3.0,
|
|
GST_VIDEO_RESAMPLER_OPT_CUBIC_C, G_TYPE_DOUBLE, (gdouble) 1.0 / 3.0,
|
|
NULL);
|
|
break;
|
|
}
|
|
gst_structure_set (options,
|
|
GST_VIDEO_RESAMPLER_OPT_ENVELOPE, G_TYPE_DOUBLE, videoscale->envelope,
|
|
GST_VIDEO_RESAMPLER_OPT_SHARPNESS, G_TYPE_DOUBLE, videoscale->sharpness,
|
|
GST_VIDEO_RESAMPLER_OPT_SHARPEN, G_TYPE_DOUBLE, videoscale->sharpen,
|
|
GST_VIDEO_CONVERTER_OPT_DEST_X, G_TYPE_INT, videoscale->borders_w / 2,
|
|
GST_VIDEO_CONVERTER_OPT_DEST_Y, G_TYPE_INT, videoscale->borders_h / 2,
|
|
GST_VIDEO_CONVERTER_OPT_DEST_WIDTH, G_TYPE_INT,
|
|
out_info->width - videoscale->borders_w,
|
|
GST_VIDEO_CONVERTER_OPT_DEST_HEIGHT, G_TYPE_INT,
|
|
out_info->height - videoscale->borders_h,
|
|
GST_VIDEO_CONVERTER_OPT_MATRIX_MODE, GST_TYPE_VIDEO_MATRIX_MODE,
|
|
GST_VIDEO_MATRIX_MODE_NONE, GST_VIDEO_CONVERTER_OPT_DITHER_METHOD,
|
|
GST_TYPE_VIDEO_DITHER_METHOD, GST_VIDEO_DITHER_NONE,
|
|
GST_VIDEO_CONVERTER_OPT_CHROMA_MODE, GST_TYPE_VIDEO_CHROMA_MODE,
|
|
GST_VIDEO_CHROMA_MODE_NONE,
|
|
GST_VIDEO_CONVERTER_OPT_THREADS, G_TYPE_UINT, videoscale->n_threads,
|
|
NULL);
|
|
|
|
if (videoscale->gamma_decode) {
|
|
gst_structure_set (options,
|
|
GST_VIDEO_CONVERTER_OPT_GAMMA_MODE, GST_TYPE_VIDEO_GAMMA_MODE,
|
|
GST_VIDEO_GAMMA_MODE_REMAP, NULL);
|
|
}
|
|
|
|
if (videoscale->convert)
|
|
gst_video_converter_free (videoscale->convert);
|
|
videoscale->convert = gst_video_converter_new (in_info, out_info, options);
|
|
}
|
|
|
|
GST_DEBUG_OBJECT (videoscale, "from=%dx%d (par=%d/%d dar=%d/%d), size %"
|
|
G_GSIZE_FORMAT " -> to=%dx%d (par=%d/%d dar=%d/%d borders=%d:%d), "
|
|
"size %" G_GSIZE_FORMAT,
|
|
in_info->width, in_info->height, in_info->par_n, in_info->par_d,
|
|
from_dar_n, from_dar_d, in_info->size, out_info->width,
|
|
out_info->height, out_info->par_n, out_info->par_d, to_dar_n, to_dar_d,
|
|
videoscale->borders_w, videoscale->borders_h, out_info->size);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static GstCaps *
|
|
gst_video_scale_fixate_caps (GstBaseTransform * base, GstPadDirection direction,
|
|
GstCaps * caps, GstCaps * othercaps)
|
|
{
|
|
GstStructure *ins, *outs;
|
|
const GValue *from_par, *to_par;
|
|
GValue fpar = { 0, }, tpar = {
|
|
0,};
|
|
|
|
othercaps = gst_caps_truncate (othercaps);
|
|
othercaps = gst_caps_make_writable (othercaps);
|
|
|
|
GST_DEBUG_OBJECT (base, "trying to fixate othercaps %" GST_PTR_FORMAT
|
|
" based on caps %" GST_PTR_FORMAT, othercaps, caps);
|
|
|
|
ins = gst_caps_get_structure (caps, 0);
|
|
outs = gst_caps_get_structure (othercaps, 0);
|
|
|
|
from_par = gst_structure_get_value (ins, "pixel-aspect-ratio");
|
|
to_par = gst_structure_get_value (outs, "pixel-aspect-ratio");
|
|
|
|
/* If we're fixating from the sinkpad we always set the PAR and
|
|
* assume that missing PAR on the sinkpad means 1/1 and
|
|
* missing PAR on the srcpad means undefined
|
|
*/
|
|
if (direction == GST_PAD_SINK) {
|
|
if (!from_par) {
|
|
g_value_init (&fpar, GST_TYPE_FRACTION);
|
|
gst_value_set_fraction (&fpar, 1, 1);
|
|
from_par = &fpar;
|
|
}
|
|
if (!to_par) {
|
|
g_value_init (&tpar, GST_TYPE_FRACTION_RANGE);
|
|
gst_value_set_fraction_range_full (&tpar, 1, G_MAXINT, G_MAXINT, 1);
|
|
to_par = &tpar;
|
|
}
|
|
} else {
|
|
if (!to_par) {
|
|
g_value_init (&tpar, GST_TYPE_FRACTION);
|
|
gst_value_set_fraction (&tpar, 1, 1);
|
|
to_par = &tpar;
|
|
|
|
gst_structure_set (outs, "pixel-aspect-ratio", GST_TYPE_FRACTION, 1, 1,
|
|
NULL);
|
|
}
|
|
if (!from_par) {
|
|
g_value_init (&fpar, GST_TYPE_FRACTION);
|
|
gst_value_set_fraction (&fpar, 1, 1);
|
|
from_par = &fpar;
|
|
}
|
|
}
|
|
|
|
/* we have both PAR but they might not be fixated */
|
|
{
|
|
gint from_w, from_h, from_par_n, from_par_d, to_par_n, to_par_d;
|
|
gint w = 0, h = 0;
|
|
gint from_dar_n, from_dar_d;
|
|
gint num, den;
|
|
|
|
/* from_par should be fixed */
|
|
g_return_val_if_fail (gst_value_is_fixed (from_par), othercaps);
|
|
|
|
from_par_n = gst_value_get_fraction_numerator (from_par);
|
|
from_par_d = gst_value_get_fraction_denominator (from_par);
|
|
|
|
gst_structure_get_int (ins, "width", &from_w);
|
|
gst_structure_get_int (ins, "height", &from_h);
|
|
|
|
gst_structure_get_int (outs, "width", &w);
|
|
gst_structure_get_int (outs, "height", &h);
|
|
|
|
/* if both width and height are already fixed, we can't do anything
|
|
* about it anymore */
|
|
if (w && h) {
|
|
guint n, d;
|
|
|
|
GST_DEBUG_OBJECT (base, "dimensions already set to %dx%d, not fixating",
|
|
w, h);
|
|
if (!gst_value_is_fixed (to_par)) {
|
|
if (gst_video_calculate_display_ratio (&n, &d, from_w, from_h,
|
|
from_par_n, from_par_d, w, h)) {
|
|
GST_DEBUG_OBJECT (base, "fixating to_par to %dx%d", n, d);
|
|
if (gst_structure_has_field (outs, "pixel-aspect-ratio"))
|
|
gst_structure_fixate_field_nearest_fraction (outs,
|
|
"pixel-aspect-ratio", n, d);
|
|
else if (n != d)
|
|
gst_structure_set (outs, "pixel-aspect-ratio", GST_TYPE_FRACTION,
|
|
n, d, NULL);
|
|
}
|
|
}
|
|
goto done;
|
|
}
|
|
|
|
/* Calculate input DAR */
|
|
if (!gst_util_fraction_multiply (from_w, from_h, from_par_n, from_par_d,
|
|
&from_dar_n, &from_dar_d)) {
|
|
GST_ELEMENT_ERROR (base, CORE, NEGOTIATION, (NULL),
|
|
("Error calculating the output scaled size - integer overflow"));
|
|
goto done;
|
|
}
|
|
|
|
GST_DEBUG_OBJECT (base, "Input DAR is %d/%d", from_dar_n, from_dar_d);
|
|
|
|
/* If either width or height are fixed there's not much we
|
|
* can do either except choosing a height or width and PAR
|
|
* that matches the DAR as good as possible
|
|
*/
|
|
if (h) {
|
|
GstStructure *tmp;
|
|
gint set_w, set_par_n, set_par_d;
|
|
|
|
GST_DEBUG_OBJECT (base, "height is fixed (%d)", h);
|
|
|
|
/* If the PAR is fixed too, there's not much to do
|
|
* except choosing the width that is nearest to the
|
|
* width with the same DAR */
|
|
if (gst_value_is_fixed (to_par)) {
|
|
to_par_n = gst_value_get_fraction_numerator (to_par);
|
|
to_par_d = gst_value_get_fraction_denominator (to_par);
|
|
|
|
GST_DEBUG_OBJECT (base, "PAR is fixed %d/%d", to_par_n, to_par_d);
|
|
|
|
if (!gst_util_fraction_multiply (from_dar_n, from_dar_d, to_par_d,
|
|
to_par_n, &num, &den)) {
|
|
GST_ELEMENT_ERROR (base, CORE, NEGOTIATION, (NULL),
|
|
("Error calculating the output scaled size - integer overflow"));
|
|
goto done;
|
|
}
|
|
|
|
w = (guint) gst_util_uint64_scale_int (h, num, den);
|
|
gst_structure_fixate_field_nearest_int (outs, "width", w);
|
|
|
|
goto done;
|
|
}
|
|
|
|
/* The PAR is not fixed and it's quite likely that we can set
|
|
* an arbitrary PAR. */
|
|
|
|
/* Check if we can keep the input width */
|
|
tmp = gst_structure_copy (outs);
|
|
gst_structure_fixate_field_nearest_int (tmp, "width", from_w);
|
|
gst_structure_get_int (tmp, "width", &set_w);
|
|
|
|
/* Might have failed but try to keep the DAR nonetheless by
|
|
* adjusting the PAR */
|
|
if (!gst_util_fraction_multiply (from_dar_n, from_dar_d, h, set_w,
|
|
&to_par_n, &to_par_d)) {
|
|
GST_ELEMENT_ERROR (base, CORE, NEGOTIATION, (NULL),
|
|
("Error calculating the output scaled size - integer overflow"));
|
|
gst_structure_free (tmp);
|
|
goto done;
|
|
}
|
|
|
|
if (!gst_structure_has_field (tmp, "pixel-aspect-ratio"))
|
|
gst_structure_set_value (tmp, "pixel-aspect-ratio", to_par);
|
|
gst_structure_fixate_field_nearest_fraction (tmp, "pixel-aspect-ratio",
|
|
to_par_n, to_par_d);
|
|
gst_structure_get_fraction (tmp, "pixel-aspect-ratio", &set_par_n,
|
|
&set_par_d);
|
|
gst_structure_free (tmp);
|
|
|
|
/* Check if the adjusted PAR is accepted */
|
|
if (set_par_n == to_par_n && set_par_d == to_par_d) {
|
|
if (gst_structure_has_field (outs, "pixel-aspect-ratio") ||
|
|
set_par_n != set_par_d)
|
|
gst_structure_set (outs, "width", G_TYPE_INT, set_w,
|
|
"pixel-aspect-ratio", GST_TYPE_FRACTION, set_par_n, set_par_d,
|
|
NULL);
|
|
goto done;
|
|
}
|
|
|
|
/* Otherwise scale the width to the new PAR and check if the
|
|
* adjusted with is accepted. If all that fails we can't keep
|
|
* the DAR */
|
|
if (!gst_util_fraction_multiply (from_dar_n, from_dar_d, set_par_d,
|
|
set_par_n, &num, &den)) {
|
|
GST_ELEMENT_ERROR (base, CORE, NEGOTIATION, (NULL),
|
|
("Error calculating the output scaled size - integer overflow"));
|
|
goto done;
|
|
}
|
|
|
|
w = (guint) gst_util_uint64_scale_int (h, num, den);
|
|
gst_structure_fixate_field_nearest_int (outs, "width", w);
|
|
if (gst_structure_has_field (outs, "pixel-aspect-ratio") ||
|
|
set_par_n != set_par_d)
|
|
gst_structure_set (outs, "pixel-aspect-ratio", GST_TYPE_FRACTION,
|
|
set_par_n, set_par_d, NULL);
|
|
|
|
goto done;
|
|
} else if (w) {
|
|
GstStructure *tmp;
|
|
gint set_h, set_par_n, set_par_d;
|
|
|
|
GST_DEBUG_OBJECT (base, "width is fixed (%d)", w);
|
|
|
|
/* If the PAR is fixed too, there's not much to do
|
|
* except choosing the height that is nearest to the
|
|
* height with the same DAR */
|
|
if (gst_value_is_fixed (to_par)) {
|
|
to_par_n = gst_value_get_fraction_numerator (to_par);
|
|
to_par_d = gst_value_get_fraction_denominator (to_par);
|
|
|
|
GST_DEBUG_OBJECT (base, "PAR is fixed %d/%d", to_par_n, to_par_d);
|
|
|
|
if (!gst_util_fraction_multiply (from_dar_n, from_dar_d, to_par_d,
|
|
to_par_n, &num, &den)) {
|
|
GST_ELEMENT_ERROR (base, CORE, NEGOTIATION, (NULL),
|
|
("Error calculating the output scaled size - integer overflow"));
|
|
goto done;
|
|
}
|
|
|
|
h = (guint) gst_util_uint64_scale_int (w, den, num);
|
|
gst_structure_fixate_field_nearest_int (outs, "height", h);
|
|
|
|
goto done;
|
|
}
|
|
|
|
/* The PAR is not fixed and it's quite likely that we can set
|
|
* an arbitrary PAR. */
|
|
|
|
/* Check if we can keep the input height */
|
|
tmp = gst_structure_copy (outs);
|
|
gst_structure_fixate_field_nearest_int (tmp, "height", from_h);
|
|
gst_structure_get_int (tmp, "height", &set_h);
|
|
|
|
/* Might have failed but try to keep the DAR nonetheless by
|
|
* adjusting the PAR */
|
|
if (!gst_util_fraction_multiply (from_dar_n, from_dar_d, set_h, w,
|
|
&to_par_n, &to_par_d)) {
|
|
GST_ELEMENT_ERROR (base, CORE, NEGOTIATION, (NULL),
|
|
("Error calculating the output scaled size - integer overflow"));
|
|
gst_structure_free (tmp);
|
|
goto done;
|
|
}
|
|
if (!gst_structure_has_field (tmp, "pixel-aspect-ratio"))
|
|
gst_structure_set_value (tmp, "pixel-aspect-ratio", to_par);
|
|
gst_structure_fixate_field_nearest_fraction (tmp, "pixel-aspect-ratio",
|
|
to_par_n, to_par_d);
|
|
gst_structure_get_fraction (tmp, "pixel-aspect-ratio", &set_par_n,
|
|
&set_par_d);
|
|
gst_structure_free (tmp);
|
|
|
|
/* Check if the adjusted PAR is accepted */
|
|
if (set_par_n == to_par_n && set_par_d == to_par_d) {
|
|
if (gst_structure_has_field (outs, "pixel-aspect-ratio") ||
|
|
set_par_n != set_par_d)
|
|
gst_structure_set (outs, "height", G_TYPE_INT, set_h,
|
|
"pixel-aspect-ratio", GST_TYPE_FRACTION, set_par_n, set_par_d,
|
|
NULL);
|
|
goto done;
|
|
}
|
|
|
|
/* Otherwise scale the height to the new PAR and check if the
|
|
* adjusted with is accepted. If all that fails we can't keep
|
|
* the DAR */
|
|
if (!gst_util_fraction_multiply (from_dar_n, from_dar_d, set_par_d,
|
|
set_par_n, &num, &den)) {
|
|
GST_ELEMENT_ERROR (base, CORE, NEGOTIATION, (NULL),
|
|
("Error calculating the output scaled size - integer overflow"));
|
|
goto done;
|
|
}
|
|
|
|
h = (guint) gst_util_uint64_scale_int (w, den, num);
|
|
gst_structure_fixate_field_nearest_int (outs, "height", h);
|
|
if (gst_structure_has_field (outs, "pixel-aspect-ratio") ||
|
|
set_par_n != set_par_d)
|
|
gst_structure_set (outs, "pixel-aspect-ratio", GST_TYPE_FRACTION,
|
|
set_par_n, set_par_d, NULL);
|
|
|
|
goto done;
|
|
} else if (gst_value_is_fixed (to_par)) {
|
|
GstStructure *tmp;
|
|
gint set_h, set_w, f_h, f_w;
|
|
|
|
to_par_n = gst_value_get_fraction_numerator (to_par);
|
|
to_par_d = gst_value_get_fraction_denominator (to_par);
|
|
|
|
/* Calculate scale factor for the PAR change */
|
|
if (!gst_util_fraction_multiply (from_dar_n, from_dar_d, to_par_n,
|
|
to_par_d, &num, &den)) {
|
|
GST_ELEMENT_ERROR (base, CORE, NEGOTIATION, (NULL),
|
|
("Error calculating the output scaled size - integer overflow"));
|
|
goto done;
|
|
}
|
|
|
|
/* Try to keep the input height (because of interlacing) */
|
|
tmp = gst_structure_copy (outs);
|
|
gst_structure_fixate_field_nearest_int (tmp, "height", from_h);
|
|
gst_structure_get_int (tmp, "height", &set_h);
|
|
|
|
/* This might have failed but try to scale the width
|
|
* to keep the DAR nonetheless */
|
|
w = (guint) gst_util_uint64_scale_int (set_h, num, den);
|
|
gst_structure_fixate_field_nearest_int (tmp, "width", w);
|
|
gst_structure_get_int (tmp, "width", &set_w);
|
|
gst_structure_free (tmp);
|
|
|
|
/* We kept the DAR and the height is nearest to the original height */
|
|
if (set_w == w) {
|
|
gst_structure_set (outs, "width", G_TYPE_INT, set_w, "height",
|
|
G_TYPE_INT, set_h, NULL);
|
|
goto done;
|
|
}
|
|
|
|
f_h = set_h;
|
|
f_w = set_w;
|
|
|
|
/* If the former failed, try to keep the input width at least */
|
|
tmp = gst_structure_copy (outs);
|
|
gst_structure_fixate_field_nearest_int (tmp, "width", from_w);
|
|
gst_structure_get_int (tmp, "width", &set_w);
|
|
|
|
/* This might have failed but try to scale the width
|
|
* to keep the DAR nonetheless */
|
|
h = (guint) gst_util_uint64_scale_int (set_w, den, num);
|
|
gst_structure_fixate_field_nearest_int (tmp, "height", h);
|
|
gst_structure_get_int (tmp, "height", &set_h);
|
|
gst_structure_free (tmp);
|
|
|
|
/* We kept the DAR and the width is nearest to the original width */
|
|
if (set_h == h) {
|
|
gst_structure_set (outs, "width", G_TYPE_INT, set_w, "height",
|
|
G_TYPE_INT, set_h, NULL);
|
|
goto done;
|
|
}
|
|
|
|
/* If all this failed, keep the height that was nearest to the orignal
|
|
* height and the nearest possible width. This changes the DAR but
|
|
* there's not much else to do here.
|
|
*/
|
|
gst_structure_set (outs, "width", G_TYPE_INT, f_w, "height", G_TYPE_INT,
|
|
f_h, NULL);
|
|
goto done;
|
|
} else {
|
|
GstStructure *tmp;
|
|
gint set_h, set_w, set_par_n, set_par_d, tmp2;
|
|
|
|
/* width, height and PAR are not fixed but passthrough is not possible */
|
|
|
|
/* First try to keep the height and width as good as possible
|
|
* and scale PAR */
|
|
tmp = gst_structure_copy (outs);
|
|
gst_structure_fixate_field_nearest_int (tmp, "height", from_h);
|
|
gst_structure_get_int (tmp, "height", &set_h);
|
|
gst_structure_fixate_field_nearest_int (tmp, "width", from_w);
|
|
gst_structure_get_int (tmp, "width", &set_w);
|
|
|
|
if (!gst_util_fraction_multiply (from_dar_n, from_dar_d, set_h, set_w,
|
|
&to_par_n, &to_par_d)) {
|
|
GST_ELEMENT_ERROR (base, CORE, NEGOTIATION, (NULL),
|
|
("Error calculating the output scaled size - integer overflow"));
|
|
gst_structure_free (tmp);
|
|
goto done;
|
|
}
|
|
|
|
if (!gst_structure_has_field (tmp, "pixel-aspect-ratio"))
|
|
gst_structure_set_value (tmp, "pixel-aspect-ratio", to_par);
|
|
gst_structure_fixate_field_nearest_fraction (tmp, "pixel-aspect-ratio",
|
|
to_par_n, to_par_d);
|
|
gst_structure_get_fraction (tmp, "pixel-aspect-ratio", &set_par_n,
|
|
&set_par_d);
|
|
gst_structure_free (tmp);
|
|
|
|
if (set_par_n == to_par_n && set_par_d == to_par_d) {
|
|
gst_structure_set (outs, "width", G_TYPE_INT, set_w, "height",
|
|
G_TYPE_INT, set_h, NULL);
|
|
|
|
if (gst_structure_has_field (outs, "pixel-aspect-ratio") ||
|
|
set_par_n != set_par_d)
|
|
gst_structure_set (outs, "pixel-aspect-ratio", GST_TYPE_FRACTION,
|
|
set_par_n, set_par_d, NULL);
|
|
goto done;
|
|
}
|
|
|
|
/* Otherwise try to scale width to keep the DAR with the set
|
|
* PAR and height */
|
|
if (!gst_util_fraction_multiply (from_dar_n, from_dar_d, set_par_d,
|
|
set_par_n, &num, &den)) {
|
|
GST_ELEMENT_ERROR (base, CORE, NEGOTIATION, (NULL),
|
|
("Error calculating the output scaled size - integer overflow"));
|
|
goto done;
|
|
}
|
|
|
|
w = (guint) gst_util_uint64_scale_int (set_h, num, den);
|
|
tmp = gst_structure_copy (outs);
|
|
gst_structure_fixate_field_nearest_int (tmp, "width", w);
|
|
gst_structure_get_int (tmp, "width", &tmp2);
|
|
gst_structure_free (tmp);
|
|
|
|
if (tmp2 == w) {
|
|
gst_structure_set (outs, "width", G_TYPE_INT, tmp2, "height",
|
|
G_TYPE_INT, set_h, NULL);
|
|
if (gst_structure_has_field (outs, "pixel-aspect-ratio") ||
|
|
set_par_n != set_par_d)
|
|
gst_structure_set (outs, "pixel-aspect-ratio", GST_TYPE_FRACTION,
|
|
set_par_n, set_par_d, NULL);
|
|
goto done;
|
|
}
|
|
|
|
/* ... or try the same with the height */
|
|
h = (guint) gst_util_uint64_scale_int (set_w, den, num);
|
|
tmp = gst_structure_copy (outs);
|
|
gst_structure_fixate_field_nearest_int (tmp, "height", h);
|
|
gst_structure_get_int (tmp, "height", &tmp2);
|
|
gst_structure_free (tmp);
|
|
|
|
if (tmp2 == h) {
|
|
gst_structure_set (outs, "width", G_TYPE_INT, set_w, "height",
|
|
G_TYPE_INT, tmp2, NULL);
|
|
if (gst_structure_has_field (outs, "pixel-aspect-ratio") ||
|
|
set_par_n != set_par_d)
|
|
gst_structure_set (outs, "pixel-aspect-ratio", GST_TYPE_FRACTION,
|
|
set_par_n, set_par_d, NULL);
|
|
goto done;
|
|
}
|
|
|
|
/* If all fails we can't keep the DAR and take the nearest values
|
|
* for everything from the first try */
|
|
gst_structure_set (outs, "width", G_TYPE_INT, set_w, "height",
|
|
G_TYPE_INT, set_h, NULL);
|
|
if (gst_structure_has_field (outs, "pixel-aspect-ratio") ||
|
|
set_par_n != set_par_d)
|
|
gst_structure_set (outs, "pixel-aspect-ratio", GST_TYPE_FRACTION,
|
|
set_par_n, set_par_d, NULL);
|
|
}
|
|
}
|
|
|
|
done:
|
|
GST_DEBUG_OBJECT (base, "fixated othercaps to %" GST_PTR_FORMAT, othercaps);
|
|
|
|
if (from_par == &fpar)
|
|
g_value_unset (&fpar);
|
|
if (to_par == &tpar)
|
|
g_value_unset (&tpar);
|
|
|
|
return othercaps;
|
|
}
|
|
|
|
#define GET_LINE(frame, line) \
|
|
(gpointer)(((guint8*)(GST_VIDEO_FRAME_PLANE_DATA (frame, 0))) + \
|
|
GST_VIDEO_FRAME_PLANE_STRIDE (frame, 0) * (line))
|
|
|
|
static GstFlowReturn
|
|
gst_video_scale_transform_frame (GstVideoFilter * filter,
|
|
GstVideoFrame * in_frame, GstVideoFrame * out_frame)
|
|
{
|
|
GstVideoScale *videoscale = GST_VIDEO_SCALE_CAST (filter);
|
|
GstFlowReturn ret = GST_FLOW_OK;
|
|
|
|
GST_CAT_DEBUG_OBJECT (CAT_PERFORMANCE, filter, "doing video scaling");
|
|
|
|
gst_video_converter_frame (videoscale->convert, in_frame, out_frame);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static gboolean
|
|
gst_video_scale_src_event (GstBaseTransform * trans, GstEvent * event)
|
|
{
|
|
GstVideoScale *videoscale = GST_VIDEO_SCALE_CAST (trans);
|
|
GstVideoFilter *filter = GST_VIDEO_FILTER_CAST (trans);
|
|
gboolean ret;
|
|
gdouble a;
|
|
GstStructure *structure;
|
|
|
|
GST_DEBUG_OBJECT (videoscale, "handling %s event",
|
|
GST_EVENT_TYPE_NAME (event));
|
|
|
|
switch (GST_EVENT_TYPE (event)) {
|
|
case GST_EVENT_NAVIGATION:
|
|
if (filter->in_info.width != filter->out_info.width ||
|
|
filter->in_info.height != filter->out_info.height) {
|
|
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 * filter->in_info.width / filter->out_info.width, NULL);
|
|
}
|
|
if (gst_structure_get_double (structure, "pointer_y", &a)) {
|
|
gst_structure_set (structure, "pointer_y", G_TYPE_DOUBLE,
|
|
a * filter->in_info.height / filter->out_info.height, NULL);
|
|
}
|
|
}
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
ret = GST_BASE_TRANSFORM_CLASS (parent_class)->src_event (trans, event);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static gboolean
|
|
plugin_init (GstPlugin * plugin)
|
|
{
|
|
if (!gst_element_register (plugin, "videoscale", GST_RANK_NONE,
|
|
GST_TYPE_VIDEO_SCALE))
|
|
return FALSE;
|
|
|
|
GST_DEBUG_CATEGORY_INIT (video_scale_debug, "videoscale", 0,
|
|
"videoscale element");
|
|
GST_DEBUG_CATEGORY_GET (CAT_PERFORMANCE, "GST_PERFORMANCE");
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
|
|
GST_VERSION_MINOR,
|
|
videoscale,
|
|
"Resizes video", plugin_init, VERSION, GST_LICENSE, GST_PACKAGE_NAME,
|
|
GST_PACKAGE_ORIGIN)
|