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1177 lines
35 KiB
C
1177 lines
35 KiB
C
/* GStreamer
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* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
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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-videobox
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* @see_also: #GstVideoCrop
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*
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* This plugin crops or enlarges the image. It takes 4 values as input, a
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* top, bottom, left and right offset. Positive values will crop that much
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* pixels from the respective border of the image, negative values will add
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* that much pixels. When pixels are added, you can specify their color.
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* Some predefined colors are usable with an enum property.
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*
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* The plugin is alpha channel aware and will try to negotiate with a format
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* that supports alpha channels first. When alpha channel is active two
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* other properties, alpha and border_alpha can be used to set the alpha
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* values of the inner picture and the border respectively. an alpha value of
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* 0.0 means total transparency, 1.0 is opaque.
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*
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* The videobox plugin has many uses such as doing a mosaic of pictures,
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* letterboxing video, cutting out pieces of video, picture in picture, etc..
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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 <gst/gst.h>
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#include <gst/base/gstbasetransform.h>
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#include <gst/video/video.h>
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#include <math.h>
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#include <liboil/liboil.h>
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#include <string.h>
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GST_DEBUG_CATEGORY_STATIC (videobox_debug);
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#define GST_CAT_DEFAULT videobox_debug
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#define GST_TYPE_VIDEO_BOX \
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(gst_video_box_get_type())
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#define GST_VIDEO_BOX(obj) \
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(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_VIDEO_BOX,GstVideoBox))
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#define GST_VIDEO_BOX_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_VIDEO_BOX,GstVideoBoxClass))
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#define GST_IS_VIDEO_BOX(obj) \
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(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_VIDEO_BOX))
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#define GST_IS_VIDEO_BOX_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_VIDEO_BOX))
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typedef struct _GstVideoBox GstVideoBox;
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typedef struct _GstVideoBoxClass GstVideoBoxClass;
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typedef enum
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{
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VIDEO_BOX_FILL_BLACK,
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VIDEO_BOX_FILL_GREEN,
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VIDEO_BOX_FILL_BLUE,
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VIDEO_BOX_FILL_LAST
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}
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GstVideoBoxFill;
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struct _GstVideoBox
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{
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GstBaseTransform element;
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/* caps */
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guint32 in_fourcc;
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gint in_width, in_height;
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guint32 out_fourcc;
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gint out_width, out_height;
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gint box_left, box_right, box_top, box_bottom;
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gint border_left, border_right, border_top, border_bottom;
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gint crop_left, crop_right, crop_top, crop_bottom;
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gdouble alpha;
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gdouble border_alpha;
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GstVideoBoxFill fill_type;
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};
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struct _GstVideoBoxClass
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{
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GstBaseTransformClass parent_class;
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};
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/* elementfactory information */
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static const GstElementDetails gst_video_box_details =
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GST_ELEMENT_DETAILS ("Video box filter",
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"Filter/Effect/Video",
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"Resizes a video by adding borders or cropping",
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"Wim Taymans <wim@fluendo.com>");
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#define DEFAULT_LEFT 0
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#define DEFAULT_RIGHT 0
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#define DEFAULT_TOP 0
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#define DEFAULT_BOTTOM 0
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#define DEFAULT_FILL_TYPE VIDEO_BOX_FILL_BLACK
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#define DEFAULT_ALPHA 1.0
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#define DEFAULT_BORDER_ALPHA 1.0
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enum
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{
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PROP_0,
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PROP_LEFT,
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PROP_RIGHT,
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PROP_TOP,
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PROP_BOTTOM,
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PROP_FILL_TYPE,
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PROP_ALPHA,
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PROP_BORDER_ALPHA
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/* FILL ME */
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};
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static GstStaticPadTemplate gst_video_box_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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GST_STATIC_CAPS (GST_VIDEO_CAPS_YUV ("AYUV") ";"
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GST_VIDEO_CAPS_YUV ("I420"))
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);
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static GstStaticPadTemplate gst_video_box_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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GST_STATIC_CAPS (GST_VIDEO_CAPS_YUV ("AYUV") ";"
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GST_VIDEO_CAPS_YUV ("I420"))
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);
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GST_BOILERPLATE (GstVideoBox, gst_video_box, GstBaseTransform,
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GST_TYPE_BASE_TRANSFORM);
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static void gst_video_box_set_property (GObject * object, guint prop_id,
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const GValue * value, GParamSpec * pspec);
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static void gst_video_box_get_property (GObject * object, guint prop_id,
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GValue * value, GParamSpec * pspec);
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static GstCaps *gst_video_box_transform_caps (GstBaseTransform * trans,
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GstPadDirection direction, GstCaps * from);
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static gboolean gst_video_box_set_caps (GstBaseTransform * trans,
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GstCaps * in, GstCaps * out);
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static gboolean gst_video_box_get_unit_size (GstBaseTransform * trans,
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GstCaps * caps, guint * size);
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static GstFlowReturn gst_video_box_transform (GstBaseTransform * trans,
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GstBuffer * in, GstBuffer * out);
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#define GST_TYPE_VIDEO_BOX_FILL (gst_video_box_fill_get_type())
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static GType
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gst_video_box_fill_get_type (void)
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{
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static GType video_box_fill_type = 0;
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static const GEnumValue video_box_fill[] = {
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{VIDEO_BOX_FILL_BLACK, "Black", "black"},
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{VIDEO_BOX_FILL_GREEN, "Colorkey green", "green"},
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{VIDEO_BOX_FILL_BLUE, "Colorkey blue", "blue"},
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{0, NULL, NULL},
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};
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if (!video_box_fill_type) {
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video_box_fill_type =
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g_enum_register_static ("GstVideoBoxFill", video_box_fill);
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}
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return video_box_fill_type;
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}
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static void
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gst_video_box_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, &gst_video_box_details);
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gst_element_class_add_pad_template (element_class,
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gst_static_pad_template_get (&gst_video_box_sink_template));
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gst_element_class_add_pad_template (element_class,
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gst_static_pad_template_get (&gst_video_box_src_template));
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}
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static void
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gst_video_box_class_init (GstVideoBoxClass * 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->set_property = gst_video_box_set_property;
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gobject_class->get_property = gst_video_box_get_property;
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g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_FILL_TYPE,
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g_param_spec_enum ("fill", "Fill", "How to fill the borders",
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GST_TYPE_VIDEO_BOX_FILL, DEFAULT_FILL_TYPE,
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(GParamFlags) G_PARAM_READWRITE));
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g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_LEFT,
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g_param_spec_int ("left", "Left",
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"Pixels to box at left (<0 = add a border)", G_MININT, G_MAXINT,
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DEFAULT_LEFT, G_PARAM_READWRITE));
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g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_RIGHT,
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g_param_spec_int ("right", "Right",
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"Pixels to box at right (<0 = add a border)", G_MININT, G_MAXINT,
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DEFAULT_RIGHT, G_PARAM_READWRITE));
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g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_TOP,
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g_param_spec_int ("top", "Top",
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"Pixels to box at top (<0 = add a border)", G_MININT, G_MAXINT,
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DEFAULT_TOP, G_PARAM_READWRITE));
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g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_BOTTOM,
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g_param_spec_int ("bottom", "Bottom",
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"Pixels to box at bottom (<0 = add a border)", G_MININT, G_MAXINT,
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DEFAULT_BOTTOM, G_PARAM_READWRITE));
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g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_ALPHA,
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g_param_spec_double ("alpha", "Alpha", "Alpha value picture", 0.0, 1.0,
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DEFAULT_ALPHA, G_PARAM_READWRITE));
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g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_BORDER_ALPHA,
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g_param_spec_double ("border_alpha", "Border Alpha",
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"Alpha value of the border", 0.0, 1.0, DEFAULT_BORDER_ALPHA,
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G_PARAM_READWRITE));
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trans_class->transform = GST_DEBUG_FUNCPTR (gst_video_box_transform);
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trans_class->transform_caps =
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GST_DEBUG_FUNCPTR (gst_video_box_transform_caps);
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trans_class->set_caps = GST_DEBUG_FUNCPTR (gst_video_box_set_caps);
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trans_class->get_unit_size = GST_DEBUG_FUNCPTR (gst_video_box_get_unit_size);
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GST_DEBUG_CATEGORY_INIT (videobox_debug, "videobox", 0,
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"Resizes a video by adding borders or cropping");
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}
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static void
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gst_video_box_init (GstVideoBox * video_box, GstVideoBoxClass * g_class)
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{
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video_box->box_right = DEFAULT_RIGHT;
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video_box->box_left = DEFAULT_LEFT;
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video_box->box_top = DEFAULT_TOP;
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video_box->box_bottom = DEFAULT_BOTTOM;
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video_box->crop_right = 0;
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video_box->crop_left = 0;
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video_box->crop_top = 0;
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video_box->crop_bottom = 0;
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video_box->fill_type = DEFAULT_FILL_TYPE;
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video_box->alpha = DEFAULT_ALPHA;
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video_box->border_alpha = DEFAULT_BORDER_ALPHA;
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}
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static void
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gst_video_box_set_property (GObject * object, guint prop_id,
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const GValue * value, GParamSpec * pspec)
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{
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GstVideoBox *video_box = GST_VIDEO_BOX (object);
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GST_BASE_TRANSFORM_LOCK (GST_BASE_TRANSFORM_CAST (video_box));
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switch (prop_id) {
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case PROP_LEFT:
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video_box->box_left = g_value_get_int (value);
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if (video_box->box_left < 0) {
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video_box->border_left = -video_box->box_left;
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video_box->crop_left = 0;
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} else {
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video_box->border_left = 0;
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video_box->crop_left = video_box->box_left;
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}
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break;
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case PROP_RIGHT:
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video_box->box_right = g_value_get_int (value);
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if (video_box->box_right < 0) {
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video_box->border_right = -video_box->box_right;
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video_box->crop_right = 0;
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} else {
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video_box->border_right = 0;
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video_box->crop_right = video_box->box_right;
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}
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break;
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case PROP_TOP:
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video_box->box_top = g_value_get_int (value);
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if (video_box->box_top < 0) {
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video_box->border_top = -video_box->box_top;
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video_box->crop_top = 0;
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} else {
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video_box->border_top = 0;
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video_box->crop_top = video_box->box_top;
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}
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break;
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case PROP_BOTTOM:
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video_box->box_bottom = g_value_get_int (value);
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if (video_box->box_bottom < 0) {
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video_box->border_bottom = -video_box->box_bottom;
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video_box->crop_bottom = 0;
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} else {
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video_box->border_bottom = 0;
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video_box->crop_bottom = video_box->box_bottom;
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}
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break;
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case PROP_FILL_TYPE:
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video_box->fill_type = g_value_get_enum (value);
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break;
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case PROP_ALPHA:
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video_box->alpha = g_value_get_double (value);
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break;
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case PROP_BORDER_ALPHA:
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video_box->border_alpha = g_value_get_double (value);
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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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GST_DEBUG_OBJECT (video_box, "Calling reconfigure");
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gst_base_transform_reconfigure (GST_BASE_TRANSFORM (video_box));
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GST_BASE_TRANSFORM_UNLOCK (GST_BASE_TRANSFORM_CAST (video_box));
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}
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static void
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gst_video_box_get_property (GObject * object, guint prop_id, GValue * value,
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GParamSpec * pspec)
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{
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GstVideoBox *video_box = GST_VIDEO_BOX (object);
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switch (prop_id) {
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case PROP_LEFT:
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g_value_set_int (value, video_box->box_left);
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break;
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case PROP_RIGHT:
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g_value_set_int (value, video_box->box_right);
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break;
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case PROP_TOP:
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g_value_set_int (value, video_box->box_top);
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break;
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case PROP_BOTTOM:
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g_value_set_int (value, video_box->box_bottom);
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break;
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case PROP_FILL_TYPE:
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g_value_set_enum (value, video_box->fill_type);
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break;
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case PROP_ALPHA:
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g_value_set_double (value, video_box->alpha);
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break;
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case PROP_BORDER_ALPHA:
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g_value_set_double (value, video_box->border_alpha);
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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_box_transform_caps (GstBaseTransform * trans,
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GstPadDirection direction, GstCaps * from)
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{
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GstVideoBox *video_box;
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GstCaps *to, *ret;
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const GstCaps *templ;
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GstStructure *structure;
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GstPad *other;
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gint width, height;
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video_box = GST_VIDEO_BOX (trans);
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to = gst_caps_copy (from);
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structure = gst_caps_get_structure (to, 0);
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/* get rid of format */
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gst_structure_remove_field (structure, "format");
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/* calculate width and height */
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if (gst_structure_get_int (structure, "width", &width)) {
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if (direction == GST_PAD_SINK) {
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width -= video_box->box_left;
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width -= video_box->box_right;
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} else {
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width += video_box->box_left;
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width += video_box->box_right;
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}
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if (width <= 0)
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width = 1;
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GST_DEBUG_OBJECT (trans, "New caps width: %d", width);
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gst_structure_set (structure, "width", G_TYPE_INT, width, NULL);
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}
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if (gst_structure_get_int (structure, "height", &height)) {
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if (direction == GST_PAD_SINK) {
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height -= video_box->box_top;
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height -= video_box->box_bottom;
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} else {
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height += video_box->box_top;
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height += video_box->box_bottom;
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}
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if (height <= 0)
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height = 1;
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GST_DEBUG_OBJECT (trans, "New caps height: %d", height);
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gst_structure_set (structure, "height", G_TYPE_INT, height, NULL);
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}
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/* filter against set allowed caps on the pad */
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other = (direction == GST_PAD_SINK) ? trans->srcpad : trans->sinkpad;
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templ = gst_pad_get_pad_template_caps (other);
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ret = gst_caps_intersect (to, templ);
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gst_caps_unref (to);
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GST_DEBUG_OBJECT (video_box, "direction %d, transformed %" GST_PTR_FORMAT
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" to %" GST_PTR_FORMAT, direction, from, ret);
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return ret;
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}
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static gboolean
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gst_video_box_set_caps (GstBaseTransform * trans, GstCaps * in, GstCaps * out)
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{
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GstVideoBox *video_box;
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GstStructure *structure;
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gboolean ret;
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video_box = GST_VIDEO_BOX (trans);
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structure = gst_caps_get_structure (in, 0);
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ret = gst_structure_get_int (structure, "width", &video_box->in_width);
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ret &= gst_structure_get_int (structure, "height", &video_box->in_height);
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ret &= gst_structure_get_fourcc (structure, "format", &video_box->in_fourcc);
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structure = gst_caps_get_structure (out, 0);
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ret &= gst_structure_get_int (structure, "width", &video_box->out_width);
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ret &= gst_structure_get_int (structure, "height", &video_box->out_height);
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ret &= gst_structure_get_fourcc (structure, "format", &video_box->out_fourcc);
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/* something wrong getting the caps */
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if (!ret)
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goto no_caps;
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GST_DEBUG_OBJECT (trans, "Input w: %d h: %d", video_box->in_width,
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video_box->in_height);
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GST_DEBUG_OBJECT (trans, "Output w: %d h: %d", video_box->out_width,
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video_box->out_height);
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/* if we have the same format in and out and we don't need to perform and
|
|
* cropping at all, we can just operate in passthorugh mode */
|
|
if (video_box->in_fourcc == video_box->out_fourcc &&
|
|
video_box->box_left == 0 && video_box->box_right == 0 &&
|
|
video_box->box_top == 0 && video_box->box_bottom == 0) {
|
|
|
|
GST_LOG_OBJECT (video_box, "we are using passthrough");
|
|
gst_base_transform_set_passthrough (GST_BASE_TRANSFORM (video_box), TRUE);
|
|
} else {
|
|
GST_LOG_OBJECT (video_box, "we are not using passthrough");
|
|
gst_base_transform_set_passthrough (GST_BASE_TRANSFORM (video_box), FALSE);
|
|
}
|
|
|
|
return ret;
|
|
|
|
/* ERRORS */
|
|
no_caps:
|
|
{
|
|
GST_DEBUG_OBJECT (video_box, "Could not get all caps fields");
|
|
return FALSE;
|
|
}
|
|
}
|
|
|
|
/* see gst-plugins/gst/games/gstvideoimage.c, paint_setup_I420() */
|
|
#define GST_VIDEO_I420_Y_ROWSTRIDE(width) (GST_ROUND_UP_4(width))
|
|
#define GST_VIDEO_I420_U_ROWSTRIDE(width) (GST_ROUND_UP_8(width)/2)
|
|
#define GST_VIDEO_I420_V_ROWSTRIDE(width) ((GST_ROUND_UP_8(GST_VIDEO_I420_Y_ROWSTRIDE(width)))/2)
|
|
|
|
#define GST_VIDEO_I420_Y_OFFSET(w,h) (0)
|
|
#define GST_VIDEO_I420_U_OFFSET(w,h) (GST_VIDEO_I420_Y_OFFSET(w,h)+(GST_VIDEO_I420_Y_ROWSTRIDE(w)*GST_ROUND_UP_2(h)))
|
|
#define GST_VIDEO_I420_V_OFFSET(w,h) (GST_VIDEO_I420_U_OFFSET(w,h)+(GST_VIDEO_I420_U_ROWSTRIDE(w)*GST_ROUND_UP_2(h)/2))
|
|
|
|
#define GST_VIDEO_I420_SIZE(w,h) (GST_VIDEO_I420_V_OFFSET(w,h)+(GST_VIDEO_I420_V_ROWSTRIDE(w)*GST_ROUND_UP_2(h)/2))
|
|
|
|
static gboolean
|
|
gst_video_box_get_unit_size (GstBaseTransform * trans, GstCaps * caps,
|
|
guint * size)
|
|
{
|
|
|
|
GstVideoBox *video_box;
|
|
GstStructure *structure = NULL;
|
|
guint32 fourcc;
|
|
gint width, height;
|
|
|
|
g_assert (size);
|
|
|
|
video_box = GST_VIDEO_BOX (trans);
|
|
|
|
structure = gst_caps_get_structure (caps, 0);
|
|
gst_structure_get_fourcc (structure, "format", &fourcc);
|
|
gst_structure_get_int (structure, "width", &width);
|
|
gst_structure_get_int (structure, "height", &height);
|
|
|
|
switch (fourcc) {
|
|
case GST_MAKE_FOURCC ('A', 'Y', 'U', 'V'):
|
|
*size = width * height * 4;
|
|
break;
|
|
case GST_MAKE_FOURCC ('I', '4', '2', '0'):
|
|
*size = GST_VIDEO_I420_SIZE (width, height);
|
|
break;
|
|
default:
|
|
return FALSE;
|
|
break;
|
|
}
|
|
|
|
GST_LOG_OBJECT (video_box, "Returning from _unit_size %d", *size);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static const guint8 yuv_colors_Y[VIDEO_BOX_FILL_LAST] = { 16, 150, 29 };
|
|
static const guint8 yuv_colors_U[VIDEO_BOX_FILL_LAST] = { 128, 46, 255 };
|
|
static const guint8 yuv_colors_V[VIDEO_BOX_FILL_LAST] = { 128, 21, 107 };
|
|
|
|
static void
|
|
gst_video_box_copy_plane_i420 (GstVideoBox * video_box, guint8 * src,
|
|
guint8 * dest, gint br, gint bl, gint bt, gint bb, gint src_crop_width,
|
|
gint src_crop_height, gint src_stride, gint dest_width, gint dest_stride,
|
|
guint8 fill_color)
|
|
{
|
|
gint j;
|
|
|
|
/* top border */
|
|
for (j = 0; j < bt; j++) {
|
|
oil_splat_u8_ns (dest, &fill_color, dest_width);
|
|
dest += dest_stride;
|
|
}
|
|
|
|
/* copy and add left and right border */
|
|
for (j = 0; j < src_crop_height; j++) {
|
|
oil_splat_u8_ns (dest, &fill_color, bl);
|
|
oil_memcpy (dest + bl, src, src_crop_width);
|
|
oil_splat_u8_ns (dest + bl + src_crop_width, &fill_color, br);
|
|
dest += dest_stride;
|
|
src += src_stride;
|
|
}
|
|
|
|
/* bottom border */
|
|
for (j = 0; j < bb; j++) {
|
|
oil_splat_u8_ns (dest, &fill_color, dest_width);
|
|
dest += dest_stride;
|
|
}
|
|
}
|
|
|
|
static void
|
|
gst_video_box_apply_alpha (guint8 * dest, guint8 alpha)
|
|
{
|
|
if (dest[0] != 0)
|
|
dest[0] = alpha;
|
|
}
|
|
|
|
static void
|
|
gst_video_box_ayuv_ayuv (GstVideoBox * video_box, guint8 * src, guint8 * dest)
|
|
{
|
|
gint dblen = video_box->out_height * video_box->out_width;
|
|
guint32 *destb = (guint32 *) dest;
|
|
guint32 *srcb = (guint32 *) src;
|
|
guint8 b_alpha = (guint8) (video_box->border_alpha * 255);
|
|
guint8 i_alpha = (guint8) (video_box->alpha * 255);
|
|
gint br, bl, bt, bb, crop_w, crop_h;
|
|
gint i;
|
|
guint32 *loc = destb;
|
|
guint32 empty_pixel;
|
|
|
|
GST_LOG ("Processing AYUV -> AYUV data");
|
|
|
|
crop_h = 0;
|
|
crop_w = 0;
|
|
empty_pixel = GUINT32_FROM_BE ((b_alpha << 24) |
|
|
(yuv_colors_Y[video_box->fill_type] << 16) |
|
|
(yuv_colors_U[video_box->fill_type] << 8) |
|
|
yuv_colors_V[video_box->fill_type]);
|
|
|
|
br = video_box->box_right;
|
|
bl = video_box->box_left;
|
|
bt = video_box->box_top;
|
|
bb = video_box->box_bottom;
|
|
|
|
if (br >= 0 && bl >= 0) {
|
|
crop_w = video_box->in_width - (br + bl);
|
|
} else if (br >= 0 && bl < 0) {
|
|
crop_w = video_box->in_width - (br);
|
|
} else if (br < 0 && bl >= 0) {
|
|
crop_w = video_box->in_width - (bl);
|
|
} else if (br < 0 && bl < 0) {
|
|
crop_w = video_box->in_width;
|
|
}
|
|
|
|
if (bb >= 0 && bt >= 0) {
|
|
crop_h = video_box->in_height - (bb + bt);
|
|
} else if (bb >= 0 && bt < 0) {
|
|
crop_h = video_box->in_height - (bb);
|
|
} else if (bb < 0 && bt >= 0) {
|
|
crop_h = video_box->in_height - (bt);
|
|
} else if (bb < 0 && bt < 0) {
|
|
crop_h = video_box->in_height;
|
|
}
|
|
|
|
GST_DEBUG ("Borders are: L:%d, R:%d, T:%d, B:%d", bl, br, bt, bb);
|
|
GST_DEBUG ("Alpha value is: %d", i_alpha);
|
|
|
|
if (crop_h <= 0 || crop_w <= 0) {
|
|
|
|
oil_splat_u32_ns (destb, &empty_pixel, dblen);
|
|
|
|
} else {
|
|
|
|
guint32 *src_loc = srcb;
|
|
|
|
/* Top border */
|
|
if (bt < 0) {
|
|
oil_splat_u32_ns (loc, &empty_pixel, (-bt) * video_box->out_width);
|
|
loc = loc + ((-bt) * video_box->out_width);
|
|
} else {
|
|
src_loc = src_loc + (bt * video_box->in_width);
|
|
}
|
|
|
|
if (bl >= 0)
|
|
src_loc += bl;
|
|
|
|
for (i = 0; i < crop_h; i++) {
|
|
gint j;
|
|
|
|
/* Left border */
|
|
if (bl < 0) {
|
|
oil_splat_u32_ns (loc, &empty_pixel, -bl);
|
|
loc += (-bl);
|
|
}
|
|
|
|
/* Cropped area */
|
|
oil_copy_u8 ((guint8 *) loc, (guint8 *) src_loc, crop_w * 4);
|
|
|
|
for (j = 0; j < crop_w; j++)
|
|
gst_video_box_apply_alpha ((guint8 *) & loc[j], i_alpha);
|
|
|
|
src_loc += video_box->in_width;
|
|
loc += crop_w;
|
|
|
|
/* Right border */
|
|
if (br < 0) {
|
|
oil_splat_u32_ns (loc, &empty_pixel, -br);
|
|
loc += (-br);
|
|
}
|
|
}
|
|
|
|
/* Bottom border */
|
|
if (bb < 0) {
|
|
oil_splat_u32_ns (loc, &empty_pixel, (-bb) * video_box->out_width);
|
|
}
|
|
}
|
|
|
|
GST_LOG ("image created");
|
|
|
|
}
|
|
|
|
static gpointer
|
|
gst_video_box_clear (gpointer dest, gint size)
|
|
{
|
|
guint8 nil = 255;
|
|
|
|
oil_splat_u8_ns (dest, &nil, size);
|
|
|
|
return dest;
|
|
}
|
|
|
|
static gint
|
|
UVfloor (gint j)
|
|
{
|
|
return floor (((float) j) / 2);
|
|
}
|
|
|
|
static gint
|
|
UVceil (gint j)
|
|
{
|
|
return ceil (((float) j) / 2);
|
|
}
|
|
|
|
static void
|
|
gst_video_box_ayuv_i420 (GstVideoBox * video_box, guint8 * src, guint8 * dest)
|
|
{
|
|
gint br, bl, bt, bb, crop_w, crop_h, rest;
|
|
gint Ysize, Usize, Vsize;
|
|
guint8 *Ydest, *Udest, *Vdest;
|
|
guint8 *Utemp, *Vtemp;
|
|
guint32 empty_px_values[3];
|
|
gint i, j;
|
|
guint Ywidth, Uwidth, Vwidth;
|
|
|
|
GST_LOG ("AYUV to I420 conversion");
|
|
|
|
crop_h = 0;
|
|
crop_w = 0;
|
|
rest = 0;
|
|
|
|
empty_px_values[0] = yuv_colors_Y[video_box->fill_type];
|
|
empty_px_values[1] = yuv_colors_U[video_box->fill_type];
|
|
empty_px_values[2] = yuv_colors_V[video_box->fill_type];
|
|
|
|
Ywidth = GST_VIDEO_I420_Y_ROWSTRIDE (video_box->out_width);
|
|
Uwidth = GST_VIDEO_I420_U_ROWSTRIDE (video_box->out_width);
|
|
Vwidth = GST_VIDEO_I420_V_ROWSTRIDE (video_box->out_width);
|
|
|
|
Ydest = dest + GST_VIDEO_I420_Y_OFFSET (video_box->out_width,
|
|
video_box->out_height);
|
|
Udest = Ydest + GST_VIDEO_I420_U_OFFSET (video_box->out_width,
|
|
video_box->out_height);
|
|
Vdest = Ydest + GST_VIDEO_I420_V_OFFSET (video_box->out_width,
|
|
video_box->out_height);
|
|
|
|
Ysize = Ywidth * video_box->out_height;
|
|
Usize = Uwidth * UVceil (video_box->out_height);
|
|
Vsize = Vwidth * UVceil (video_box->out_height);
|
|
|
|
br = video_box->box_right;
|
|
bl = video_box->box_left;
|
|
bt = video_box->box_top;
|
|
bb = video_box->box_bottom;
|
|
|
|
if (br >= 0 && bl >= 0) {
|
|
rest = Ywidth - video_box->out_width;
|
|
crop_w = video_box->in_width - (bl + br);
|
|
} else if (br >= 0 && bl < 0) {
|
|
rest = Ywidth - video_box->out_width;
|
|
crop_w = video_box->in_width - (br);
|
|
} else if (br < 0 && bl >= 0) {
|
|
rest = Ywidth - video_box->out_width;
|
|
crop_w = video_box->in_width - (bl);
|
|
} else if (br < 0 && bl < 0) {
|
|
rest = Ywidth - video_box->out_width;
|
|
crop_w = video_box->in_width;
|
|
}
|
|
|
|
if (bb >= 0 && bt >= 0) {
|
|
crop_h = video_box->in_height - (bb + bt);
|
|
} else if (bb >= 0 && bt < 0) {
|
|
crop_h = video_box->in_height - (bb);
|
|
} else if (bb < 0 && bt >= 0) {
|
|
crop_h = video_box->in_height - (bt);
|
|
} else if (bb < 0 && bt < 0) {
|
|
crop_h = video_box->in_height;
|
|
}
|
|
|
|
Utemp = g_malloc0 (Uwidth);
|
|
Vtemp = g_malloc0 (Vwidth);
|
|
|
|
GST_LOG ("Borders are: L:%d, R:%d, T:%d, B:%d", bl, br, bt, bb);
|
|
|
|
GST_LOG ("Starting conversion");
|
|
|
|
if (crop_h <= 0 || crop_w <= 0) {
|
|
|
|
oil_splat_u8_ns (Ydest, (guint8 *) & empty_px_values[0], Ysize);
|
|
oil_splat_u8_ns (Udest, (guint8 *) & empty_px_values[1], Usize);
|
|
oil_splat_u8_ns (Vdest, (guint8 *) & empty_px_values[2], Vsize);
|
|
|
|
} else {
|
|
|
|
gboolean sumbuff = FALSE;
|
|
guint32 *src_loc1;
|
|
gint a = 0;
|
|
|
|
src_loc1 = (guint32 *) src;
|
|
|
|
if (bt < 0) {
|
|
oil_splat_u8_ns (Ydest, (guint8 *) & empty_px_values[0], (-bt) * Ywidth);
|
|
|
|
oil_splat_u8_ns (Udest, (guint8 *) & empty_px_values[1],
|
|
(UVfloor (-bt) * Uwidth) + 7);
|
|
oil_splat_u8_ns (Vdest, (guint8 *) & empty_px_values[2],
|
|
UVfloor (-bt) * Vwidth);
|
|
|
|
if ((-bt) % 2 > 0) {
|
|
oil_splat_u8_ns (Utemp, (guint8 *) & empty_px_values[1], Uwidth);
|
|
oil_splat_u8_ns (Vtemp, (guint8 *) & empty_px_values[2], Vwidth);
|
|
sumbuff = TRUE;
|
|
}
|
|
|
|
Ydest += ((-bt) * Ywidth);
|
|
Udest += (UVfloor (-bt) * Uwidth);
|
|
Vdest += (UVfloor (-bt) * Vwidth);
|
|
|
|
} else {
|
|
src_loc1 = src_loc1 + (bt * video_box->in_width);
|
|
}
|
|
|
|
if (bl >= 0)
|
|
src_loc1 += bl;
|
|
|
|
GST_LOG ("Cropped area");
|
|
GST_LOG ("Ydest value: %p Ywidth: %u", Ydest, Ywidth);
|
|
GST_LOG ("Udest value: %p Uwidth: %u", Udest, Uwidth);
|
|
GST_LOG ("Vdest value: %p Vwidth: %u", Vdest, Vwidth);
|
|
GST_LOG ("Rest: %d", rest);
|
|
for (i = 0; i < crop_h; i++) {
|
|
|
|
a = 0;
|
|
if (sumbuff) {
|
|
/* left border */
|
|
if (bl < 0) {
|
|
oil_splat_u8_ns (Ydest, (guint8 *) & empty_px_values[0], -bl);
|
|
|
|
for (j = 0; j < -bl; j++) {
|
|
Utemp[UVfloor (j)] = (Utemp[UVfloor (j)] + empty_px_values[1]) / 2;
|
|
Vtemp[UVfloor (j)] = (Vtemp[UVfloor (j)] + empty_px_values[2]) / 2;
|
|
}
|
|
Ydest += -bl;
|
|
a = -bl;
|
|
}
|
|
|
|
for (j = 0; j < crop_w; j++) {
|
|
/* check ARCH */
|
|
Ydest[j] = ((guint8 *) & src_loc1[j])[1];
|
|
Utemp[UVfloor (a + j)] =
|
|
(Utemp[UVfloor (a + j)] + ((guint8 *) & src_loc1[j])[2]) / 2;
|
|
Vtemp[UVfloor (a + j)] =
|
|
(Vtemp[UVfloor (a + j)] + ((guint8 *) & src_loc1[j])[3]) / 2;
|
|
}
|
|
Ydest += crop_w;
|
|
|
|
/* right border */
|
|
if (br < 0) {
|
|
oil_splat_u8_ns (Ydest, (guint8 *) & empty_px_values[0], -br);
|
|
for (j = 0; j < -br; j++) {
|
|
Utemp[UVfloor (a + crop_w + j)] =
|
|
(Utemp[UVfloor (a + crop_w + j)] + empty_px_values[1]) / 2;
|
|
Vtemp[UVfloor (a + crop_w + j)] =
|
|
(Vtemp[UVfloor (a + crop_w + j)] + empty_px_values[2]) / 2;
|
|
}
|
|
Ydest += -br;
|
|
}
|
|
oil_copy_u8 (Udest, Utemp, Uwidth);
|
|
oil_copy_u8 (Vdest, Vtemp, Vwidth);
|
|
Udest += Uwidth;
|
|
Vdest += Vwidth;
|
|
Ydest += rest;
|
|
gst_video_box_clear (Utemp, Uwidth);
|
|
gst_video_box_clear (Vtemp, Vwidth);
|
|
src_loc1 += video_box->in_width;
|
|
sumbuff = FALSE;
|
|
|
|
} else {
|
|
|
|
/* left border */
|
|
a = 0;
|
|
if (bl < 0) {
|
|
oil_splat_u8_ns (Ydest, (guint8 *) & empty_px_values[0], -bl);
|
|
oil_splat_u8_ns (Vtemp, (guint8 *) & empty_px_values[1],
|
|
UVceil (-bl));
|
|
oil_splat_u8_ns (Utemp, (guint8 *) & empty_px_values[2],
|
|
UVceil (-bl));
|
|
Ydest += -bl;
|
|
a = -bl;
|
|
}
|
|
|
|
for (j = 0; j < crop_w; j++) {
|
|
|
|
/* check ARCH */
|
|
Ydest[j] = ((guint8 *) & src_loc1[j])[1];
|
|
|
|
if ((a + j) % 2 > 0) {
|
|
Utemp[UVfloor (a + j)] =
|
|
(Utemp[UVfloor (a + j)] + ((guint8 *) & src_loc1[j])[2]) / 2;
|
|
Vtemp[UVfloor (a + j)] =
|
|
(Vtemp[UVfloor (a + j)] + ((guint8 *) & src_loc1[j])[3]) / 2;
|
|
} else {
|
|
Utemp[UVfloor (a + j)] = ((guint8 *) & src_loc1[j])[2] / 2;
|
|
Vtemp[UVfloor (a + j)] = ((guint8 *) & src_loc1[j])[3] / 2;
|
|
}
|
|
}
|
|
Ydest += crop_w;
|
|
|
|
/* right border */
|
|
if (br < 0) {
|
|
j = 0;
|
|
if ((a + crop_w) % 2 > 0) {
|
|
Utemp[UVfloor (a + crop_w)] =
|
|
(Utemp[UVfloor (a + crop_w)] + empty_px_values[1]) / 2;
|
|
Vtemp[UVfloor (a + crop_w)] =
|
|
(Vtemp[UVfloor (a + crop_w)] + empty_px_values[2]) / 2;
|
|
a++;
|
|
j = -1;
|
|
}
|
|
|
|
oil_splat_u8_ns (Ydest, (guint8 *) & empty_px_values[0], -br);
|
|
oil_splat_u8_ns (&Utemp[UVfloor (a + crop_w)],
|
|
(guint8 *) & empty_px_values[1], UVceil ((-br) + j));
|
|
oil_splat_u8_ns (&Vtemp[UVfloor (a + crop_w)],
|
|
(guint8 *) & empty_px_values[2], UVceil ((-br) + j));
|
|
Ydest += -br;
|
|
}
|
|
Ydest += rest;
|
|
src_loc1 += video_box->in_width;
|
|
sumbuff = TRUE;
|
|
|
|
}
|
|
}
|
|
|
|
/* bottom border */
|
|
if (bb < 0) {
|
|
oil_splat_u8_ns (Ydest, (guint8 *) & empty_px_values[0], (-bb) * Ywidth);
|
|
if (sumbuff) {
|
|
for (i = 0; i < Uwidth; i++) {
|
|
Utemp[i] = (Utemp[i] + empty_px_values[1]) / 2;
|
|
}
|
|
for (i = 0; i < Vwidth; i++) {
|
|
Vtemp[i] = (Vtemp[i] + empty_px_values[2]) / 2;
|
|
}
|
|
|
|
oil_copy_u8 (Udest, Utemp, Uwidth);
|
|
oil_copy_u8 (Vdest, Vtemp, Vwidth);
|
|
Udest += Uwidth;
|
|
Vdest += Vwidth;
|
|
sumbuff = FALSE;
|
|
}
|
|
oil_splat_u8_ns (Udest, (guint8 *) & empty_px_values[1],
|
|
(UVfloor ((-bb))) * Uwidth);
|
|
oil_splat_u8_ns (Vdest, (guint8 *) & empty_px_values[2],
|
|
(UVfloor ((-bb))) * Vwidth);
|
|
}
|
|
if (sumbuff) {
|
|
oil_copy_u8 (Udest, Utemp, Uwidth);
|
|
oil_copy_u8 (Vdest, Vtemp, Vwidth);
|
|
}
|
|
}
|
|
|
|
GST_LOG ("image created");
|
|
g_free (Utemp);
|
|
g_free (Vtemp);
|
|
}
|
|
|
|
static void
|
|
gst_video_box_i420_ayuv (GstVideoBox * video_box, guint8 * src, guint8 * dest)
|
|
{
|
|
guint8 *srcY, *srcU, *srcV;
|
|
gint crop_width, crop_width2, crop_height;
|
|
gint out_width;
|
|
gint src_stridey, src_strideu, src_stridev;
|
|
gint br, bl, bt, bb;
|
|
gint colorY, colorU, colorV;
|
|
gint i, j;
|
|
guint8 b_alpha = (guint8) (video_box->border_alpha * 255);
|
|
guint8 i_alpha = (guint8) (video_box->alpha * 255);
|
|
guint32 *destp;
|
|
guint32 *destb = (guint32 *) dest;
|
|
guint32 ayuv;
|
|
|
|
br = video_box->border_right;
|
|
bl = video_box->border_left;
|
|
bt = video_box->border_top;
|
|
bb = video_box->border_bottom;
|
|
|
|
out_width = video_box->out_width;
|
|
|
|
src_stridey = GST_VIDEO_I420_Y_ROWSTRIDE (video_box->in_width);
|
|
src_strideu = GST_VIDEO_I420_U_ROWSTRIDE (video_box->in_width);
|
|
src_stridev = GST_VIDEO_I420_V_ROWSTRIDE (video_box->in_width);
|
|
|
|
crop_width = video_box->in_width;
|
|
crop_width -= (video_box->crop_left + video_box->crop_right);
|
|
crop_width2 = crop_width / 2;
|
|
crop_height = video_box->in_height;
|
|
crop_height -= (video_box->crop_top + video_box->crop_bottom);
|
|
|
|
srcY =
|
|
src + GST_VIDEO_I420_Y_OFFSET (video_box->in_width, video_box->in_height);
|
|
srcY += src_stridey * video_box->crop_top + video_box->crop_left;
|
|
srcU =
|
|
src + GST_VIDEO_I420_U_OFFSET (video_box->in_width, video_box->in_height);
|
|
srcU += src_strideu * (video_box->crop_top / 2) + (video_box->crop_left / 2);
|
|
srcV =
|
|
src + GST_VIDEO_I420_V_OFFSET (video_box->in_width, video_box->in_height);
|
|
srcV += src_stridev * (video_box->crop_top / 2) + (video_box->crop_left / 2);
|
|
|
|
colorY = yuv_colors_Y[video_box->fill_type];
|
|
colorU = yuv_colors_U[video_box->fill_type];
|
|
colorV = yuv_colors_V[video_box->fill_type];
|
|
|
|
ayuv =
|
|
GUINT32_FROM_BE ((b_alpha << 24) | (colorY << 16) | (colorU << 8) |
|
|
colorV);
|
|
|
|
/* top border */
|
|
if (bt) {
|
|
size_t nb_pixels = bt * out_width;
|
|
|
|
oil_splat_u32_ns (destb, &ayuv, nb_pixels);
|
|
destb += nb_pixels;
|
|
}
|
|
for (i = 0; i < crop_height; i++) {
|
|
destp = destb;
|
|
/* left border */
|
|
if (bl) {
|
|
oil_splat_u32_ns (destp, &ayuv, bl);
|
|
destp += bl;
|
|
}
|
|
dest = (guint8 *) destp;
|
|
/* center */
|
|
/* We can splat the alpha channel for the whole line */
|
|
oil_splat_u8 (dest, 4, &i_alpha, crop_width);
|
|
for (j = 0; j < crop_width2; j++) {
|
|
dest++;
|
|
*dest++ = *srcY++;
|
|
*dest++ = *srcU;
|
|
*dest++ = *srcV;
|
|
dest++;
|
|
*dest++ = *srcY++;
|
|
*dest++ = *srcU++;
|
|
*dest++ = *srcV++;
|
|
}
|
|
if (i % 2 == 0) {
|
|
srcU -= crop_width2;
|
|
srcV -= crop_width2;
|
|
} else {
|
|
srcU += src_strideu - crop_width2;
|
|
srcV += src_stridev - crop_width2;
|
|
}
|
|
srcY += src_stridey - (crop_width2 * 2);
|
|
|
|
destp = (guint32 *) dest;
|
|
/* right border */
|
|
if (br) {
|
|
oil_splat_u32_ns (destp, &ayuv, br);
|
|
}
|
|
destb += out_width;
|
|
}
|
|
/* bottom border */
|
|
if (bb) {
|
|
size_t nb_pixels = bb * out_width;
|
|
|
|
oil_splat_u32_ns (destb, &ayuv, nb_pixels);
|
|
}
|
|
}
|
|
|
|
|
|
static void
|
|
gst_video_box_i420_i420 (GstVideoBox * video_box, guint8 * src, guint8 * dest)
|
|
{
|
|
guint8 *srcY, *srcU, *srcV;
|
|
guint8 *destY, *destU, *destV;
|
|
gint crop_width, crop_height;
|
|
gint out_width, out_height;
|
|
gint src_width, src_height;
|
|
gint src_stride, dest_stride;
|
|
gint br, bl, bt, bb;
|
|
|
|
br = video_box->border_right;
|
|
bl = video_box->border_left;
|
|
bt = video_box->border_top;
|
|
bb = video_box->border_bottom;
|
|
|
|
out_width = video_box->out_width;
|
|
out_height = video_box->out_height;
|
|
|
|
src_width = video_box->in_width;
|
|
src_height = video_box->in_height;
|
|
|
|
crop_width = src_width - (video_box->crop_left + video_box->crop_right);
|
|
crop_height = src_height - (video_box->crop_top + video_box->crop_bottom);
|
|
|
|
/* Y plane */
|
|
src_stride = GST_VIDEO_I420_Y_ROWSTRIDE (src_width);
|
|
dest_stride = GST_VIDEO_I420_Y_ROWSTRIDE (out_width);
|
|
|
|
destY = dest + GST_VIDEO_I420_Y_OFFSET (out_width, out_height);
|
|
|
|
srcY = src + GST_VIDEO_I420_Y_OFFSET (src_width, src_height);
|
|
srcY += src_stride * video_box->crop_top + video_box->crop_left;
|
|
|
|
gst_video_box_copy_plane_i420 (video_box, srcY, destY, br, bl, bt, bb,
|
|
crop_width, crop_height, src_stride, out_width, dest_stride,
|
|
yuv_colors_Y[video_box->fill_type]);
|
|
|
|
/* U plane */
|
|
src_stride = GST_VIDEO_I420_U_ROWSTRIDE (src_width);
|
|
dest_stride = GST_VIDEO_I420_U_ROWSTRIDE (out_width);
|
|
|
|
destU = dest + GST_VIDEO_I420_U_OFFSET (out_width, out_height);
|
|
|
|
srcU = src + GST_VIDEO_I420_U_OFFSET (src_width, src_height);
|
|
srcU += src_stride * (video_box->crop_top / 2) + (video_box->crop_left / 2);
|
|
|
|
gst_video_box_copy_plane_i420 (video_box, srcU, destU, br / 2, bl / 2, bt / 2,
|
|
bb / 2, crop_width / 2, crop_height / 2, src_stride, out_width / 2,
|
|
dest_stride, yuv_colors_U[video_box->fill_type]);
|
|
|
|
/* V plane */
|
|
src_stride = GST_VIDEO_I420_V_ROWSTRIDE (src_width);
|
|
dest_stride = GST_VIDEO_I420_V_ROWSTRIDE (out_width);
|
|
|
|
destV = dest + GST_VIDEO_I420_V_OFFSET (out_width, out_height);
|
|
|
|
srcV = src + GST_VIDEO_I420_V_OFFSET (src_width, src_height);
|
|
srcV += src_stride * (video_box->crop_top / 2) + (video_box->crop_left / 2);
|
|
|
|
gst_video_box_copy_plane_i420 (video_box, srcV, destV, br / 2, bl / 2, bt / 2,
|
|
bb / 2, crop_width / 2, crop_height / 2, src_stride, out_width / 2,
|
|
dest_stride, yuv_colors_V[video_box->fill_type]);
|
|
}
|
|
|
|
static GstFlowReturn
|
|
gst_video_box_transform (GstBaseTransform * trans, GstBuffer * in,
|
|
GstBuffer * out)
|
|
{
|
|
GstVideoBox *video_box;
|
|
guint8 *indata, *outdata;
|
|
|
|
video_box = GST_VIDEO_BOX (trans);
|
|
|
|
indata = GST_BUFFER_DATA (in);
|
|
outdata = GST_BUFFER_DATA (out);
|
|
|
|
switch (video_box->in_fourcc) {
|
|
case GST_MAKE_FOURCC ('A', 'Y', 'U', 'V'):
|
|
switch (video_box->out_fourcc) {
|
|
case GST_MAKE_FOURCC ('A', 'Y', 'U', 'V'):
|
|
gst_video_box_ayuv_ayuv (video_box, indata, outdata);
|
|
break;
|
|
case GST_MAKE_FOURCC ('I', '4', '2', '0'):
|
|
gst_video_box_ayuv_i420 (video_box, indata, outdata);
|
|
break;
|
|
default:
|
|
goto invalid_format;
|
|
}
|
|
break;
|
|
case GST_MAKE_FOURCC ('I', '4', '2', '0'):
|
|
switch (video_box->out_fourcc) {
|
|
case GST_MAKE_FOURCC ('A', 'Y', 'U', 'V'):
|
|
gst_video_box_i420_ayuv (video_box, indata, outdata);
|
|
break;
|
|
case GST_MAKE_FOURCC ('I', '4', '2', '0'):
|
|
gst_video_box_i420_i420 (video_box, indata, outdata);
|
|
break;
|
|
default:
|
|
goto invalid_format;
|
|
}
|
|
break;
|
|
default:
|
|
goto invalid_format;
|
|
}
|
|
return GST_FLOW_OK;
|
|
|
|
/* ERRORS */
|
|
invalid_format:
|
|
{
|
|
return GST_FLOW_ERROR;
|
|
}
|
|
}
|
|
|
|
/* FIXME: 0.11 merge with videocrop plugin */
|
|
static gboolean
|
|
plugin_init (GstPlugin * plugin)
|
|
{
|
|
oil_init ();
|
|
|
|
return gst_element_register (plugin, "videobox", GST_RANK_NONE,
|
|
GST_TYPE_VIDEO_BOX);
|
|
}
|
|
|
|
GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
|
|
GST_VERSION_MINOR,
|
|
"videobox",
|
|
"resizes a video by adding borders or cropping",
|
|
plugin_init, VERSION, GST_LICENSE, GST_PACKAGE_NAME, GST_PACKAGE_ORIGIN)
|