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Original commit message from CVS: * ext/gdk_pixbuf/pixbufscale.c: (gst_pixbufscale_link), (pixbufscale_scale), (gst_pixbufscale_chain): * ext/gdk_pixbuf/pixbufscale.h: Incorporate changes from Tim-Philipp Mueller <t.i.m@orange.net> to ensure rowstrides are calculated the same way as ffmpegcolorspace. Use gst_buffer_stamp instead of copying timestamps manually, so that we pick up duration and offset also.
486 lines
15 KiB
C
486 lines
15 KiB
C
/* GStreamer
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* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
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* Copyright (C) <2004> Jan Schmidt <thaytan@mad.scientist.com>
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* Copyright (C) <2004> Tim-Philipp Mueller <t.i.m@orange.net>
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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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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <pixbufscale.h>
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#include <gst/video/video.h>
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#include <gdk-pixbuf/gdk-pixbuf.h>
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#define ROUND_UP_2(x) (((x)+1)&~1)
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#define ROUND_UP_4(x) (((x)+3)&~3)
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#define ROUND_UP_8(x) (((x)+7)&~7)
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/* These match the ones gstffmpegcolorspace uses (Tim) */
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#define GST_RGB24_ROWSTRIDE(width) (ROUND_UP_4 ((width)*3))
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#define GST_RGB24_SIZE(width,height) ((height)*GST_RGB24_ROWSTRIDE(width))
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/* debug variable definition */
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GST_DEBUG_CATEGORY (pixbufscale_debug);
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#define GST_CAT_DEFAULT pixbufscale_debug
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/* elementfactory information */
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static GstElementDetails pixbufscale_details =
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GST_ELEMENT_DETAILS ("Gdk Pixbuf scaler",
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"Filter/Effect/Video",
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"Resizes video",
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"Jan Schmidt <thaytan@mad.scientist.com>\nWim Taymans <wim.taymans@chello.be>");
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/* GstPixbufScale signals and args */
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enum
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{
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/* FILL ME */
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LAST_SIGNAL
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};
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enum
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{
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ARG_0,
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ARG_METHOD
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/* FILL ME */
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};
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static GstStaticPadTemplate gst_pixbufscale_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_RGB)
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);
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static GstStaticPadTemplate gst_pixbufscale_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_RGB)
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);
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#define GST_TYPE_PIXBUFSCALE_METHOD (gst_pixbufscale_method_get_type())
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static GType
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gst_pixbufscale_method_get_type (void)
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{
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static GType pixbufscale_method_type = 0;
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static GEnumValue pixbufscale_methods[] = {
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{GST_PIXBUFSCALE_NEAREST, "0", "Nearest Neighbour"},
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{GST_PIXBUFSCALE_TILES, "1", "Tiles"},
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{GST_PIXBUFSCALE_BILINEAR, "2", "Bilinear"},
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{GST_PIXBUFSCALE_HYPER, "3", "Hyper"},
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{0, NULL, NULL},
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};
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if (!pixbufscale_method_type) {
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pixbufscale_method_type =
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g_enum_register_static ("GstPixbufScaleMethod", pixbufscale_methods);
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}
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return pixbufscale_method_type;
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}
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static void gst_pixbufscale_base_init (gpointer g_class);
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static void gst_pixbufscale_class_init (GstPixbufScaleClass * klass);
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static void gst_pixbufscale_init (GstPixbufScale * pixbufscale);
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static gboolean gst_pixbufscale_handle_src_event (GstPad * pad,
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GstEvent * event);
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static void gst_pixbufscale_set_property (GObject * object, guint prop_id,
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const GValue * value, GParamSpec * pspec);
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static void gst_pixbufscale_get_property (GObject * object, guint prop_id,
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GValue * value, GParamSpec * pspec);
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static void gst_pixbufscale_chain (GstPad * pad, GstData * _data);
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static GstElementClass *parent_class = NULL;
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GType
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gst_pixbufscale_get_type (void)
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{
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static GType pixbufscale_type = 0;
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if (!pixbufscale_type) {
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static const GTypeInfo pixbufscale_info = {
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sizeof (GstPixbufScaleClass),
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gst_pixbufscale_base_init,
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NULL,
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(GClassInitFunc) gst_pixbufscale_class_init,
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NULL,
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NULL,
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sizeof (GstPixbufScale),
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0,
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(GInstanceInitFunc) gst_pixbufscale_init,
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};
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pixbufscale_type =
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g_type_register_static (GST_TYPE_ELEMENT, "GstPixbufScale",
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&pixbufscale_info, 0);
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}
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return pixbufscale_type;
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}
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static void
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gst_pixbufscale_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, &pixbufscale_details);
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gst_element_class_add_pad_template (element_class,
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gst_static_pad_template_get (&gst_pixbufscale_src_template));
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gst_element_class_add_pad_template (element_class,
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gst_static_pad_template_get (&gst_pixbufscale_sink_template));
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}
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static void
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gst_pixbufscale_class_init (GstPixbufScaleClass * klass)
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{
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GObjectClass *gobject_class;
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GstElementClass *gstelement_class;
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gobject_class = (GObjectClass *) klass;
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gstelement_class = (GstElementClass *) klass;
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g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_METHOD,
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g_param_spec_enum ("method", "method", "method",
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GST_TYPE_PIXBUFSCALE_METHOD, GST_PIXBUFSCALE_BILINEAR,
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G_PARAM_READWRITE));
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parent_class = g_type_class_ref (GST_TYPE_ELEMENT);
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gobject_class->set_property = gst_pixbufscale_set_property;
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gobject_class->get_property = gst_pixbufscale_get_property;
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}
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static GstCaps *
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gst_pixbufscale_getcaps (GstPad * pad)
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{
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GstPixbufScale *pixbufscale;
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GstCaps *othercaps;
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GstCaps *caps;
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GstPad *otherpad;
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int i;
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pixbufscale = GST_PIXBUFSCALE (gst_pad_get_parent (pad));
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otherpad = (pad == pixbufscale->srcpad) ? pixbufscale->sinkpad :
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pixbufscale->srcpad;
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othercaps = gst_pad_get_allowed_caps (otherpad);
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caps = gst_caps_intersect (othercaps, gst_pad_get_pad_template_caps (pad));
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gst_caps_free (othercaps);
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for (i = 0; i < gst_caps_get_size (caps); i++) {
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GstStructure *structure = gst_caps_get_structure (caps, i);
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gst_structure_set (structure,
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"width", GST_TYPE_INT_RANGE, 16, 4096,
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"height", GST_TYPE_INT_RANGE, 16, 4096, NULL);
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gst_structure_remove_field (structure, "pixel-aspect-ratio");
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}
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GST_DEBUG ("getcaps are: %" GST_PTR_FORMAT, caps);
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return caps;
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}
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static GstPadLinkReturn
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gst_pixbufscale_link (GstPad * pad, const GstCaps * caps)
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{
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GstPixbufScale *pixbufscale;
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GstPadLinkReturn ret;
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GstPad *otherpad;
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GstStructure *structure;
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int height, width;
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GST_DEBUG ("gst_pixbufscale_link %s\n", gst_caps_to_string (caps));
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pixbufscale = GST_PIXBUFSCALE (gst_pad_get_parent (pad));
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otherpad = (pad == pixbufscale->srcpad) ? pixbufscale->sinkpad :
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pixbufscale->srcpad;
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structure = gst_caps_get_structure (caps, 0);
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ret = gst_structure_get_int (structure, "width", &width);
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ret &= gst_structure_get_int (structure, "height", &height);
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ret = gst_pad_try_set_caps (otherpad, caps);
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if (ret == GST_PAD_LINK_OK) {
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/* cool, we can use passthru */
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pixbufscale->to_width = width;
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pixbufscale->to_height = height;
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pixbufscale->from_width = width;
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pixbufscale->from_height = height;
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pixbufscale->from_buf_size = GST_RGB24_SIZE (width, height);
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pixbufscale->to_buf_size = GST_RGB24_SIZE (width, height);
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pixbufscale->from_stride = GST_RGB24_ROWSTRIDE (width);
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pixbufscale->to_stride = GST_RGB24_ROWSTRIDE (width);
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pixbufscale->inited = TRUE;
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return GST_PAD_LINK_OK;
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}
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if (gst_pad_is_negotiated (otherpad)) {
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GstCaps *newcaps = gst_caps_copy (caps);
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if (pad == pixbufscale->srcpad) {
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gst_caps_set_simple (newcaps,
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"width", G_TYPE_INT, pixbufscale->from_width,
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"height", G_TYPE_INT, pixbufscale->from_height, NULL);
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} else {
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gst_caps_set_simple (newcaps,
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"width", G_TYPE_INT, pixbufscale->to_width,
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"height", G_TYPE_INT, pixbufscale->to_height, NULL);
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}
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ret = gst_pad_try_set_caps (otherpad, newcaps);
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if (GST_PAD_LINK_FAILED (ret)) {
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return GST_PAD_LINK_REFUSED;
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}
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}
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pixbufscale->passthru = FALSE;
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if (pad == pixbufscale->srcpad) {
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pixbufscale->to_width = width;
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pixbufscale->to_height = height;
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} else {
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pixbufscale->from_width = width;
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pixbufscale->from_height = height;
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}
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if (gst_pad_is_negotiated (otherpad)) {
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pixbufscale->from_buf_size =
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GST_RGB24_SIZE (pixbufscale->from_width, pixbufscale->from_height);
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pixbufscale->to_buf_size =
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GST_RGB24_SIZE (pixbufscale->to_width, pixbufscale->to_height);
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pixbufscale->from_stride = GST_RGB24_ROWSTRIDE (pixbufscale->from_width);
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pixbufscale->to_stride = GST_RGB24_ROWSTRIDE (pixbufscale->to_width);
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pixbufscale->inited = TRUE;
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}
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return GST_PAD_LINK_OK;
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}
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static void
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gst_pixbufscale_init (GstPixbufScale * pixbufscale)
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{
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GST_DEBUG_OBJECT (pixbufscale, "_init");
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pixbufscale->sinkpad =
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gst_pad_new_from_template (gst_static_pad_template_get
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(&gst_pixbufscale_sink_template), "sink");
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gst_element_add_pad (GST_ELEMENT (pixbufscale), pixbufscale->sinkpad);
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gst_pad_set_chain_function (pixbufscale->sinkpad, gst_pixbufscale_chain);
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gst_pad_set_link_function (pixbufscale->sinkpad, gst_pixbufscale_link);
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gst_pad_set_getcaps_function (pixbufscale->sinkpad, gst_pixbufscale_getcaps);
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pixbufscale->srcpad =
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gst_pad_new_from_template (gst_static_pad_template_get
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(&gst_pixbufscale_src_template), "src");
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gst_element_add_pad (GST_ELEMENT (pixbufscale), pixbufscale->srcpad);
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gst_pad_set_event_function (pixbufscale->srcpad,
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gst_pixbufscale_handle_src_event);
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gst_pad_set_link_function (pixbufscale->srcpad, gst_pixbufscale_link);
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gst_pad_set_getcaps_function (pixbufscale->srcpad, gst_pixbufscale_getcaps);
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pixbufscale->inited = FALSE;
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pixbufscale->method = GST_PIXBUFSCALE_TILES;
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pixbufscale->gdk_method = GDK_INTERP_TILES;
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}
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static gboolean
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gst_pixbufscale_handle_src_event (GstPad * pad, GstEvent * event)
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{
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GstPixbufScale *pixbufscale;
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double a;
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GstStructure *structure;
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GstEvent *new_event;
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pixbufscale = GST_PIXBUFSCALE (gst_pad_get_parent (pad));
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switch (GST_EVENT_TYPE (event)) {
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case GST_EVENT_NAVIGATION:
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structure = gst_structure_copy (event->event_data.structure.structure);
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if (gst_structure_get_double (event->event_data.structure.structure,
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"pointer_x", &a)) {
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gst_structure_set (structure, "pointer_x", G_TYPE_DOUBLE,
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a * pixbufscale->from_width / pixbufscale->to_width, NULL);
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}
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if (gst_structure_get_double (event->event_data.structure.structure,
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"pointer_y", &a)) {
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gst_structure_set (structure, "pointer_y", G_TYPE_DOUBLE,
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a * pixbufscale->from_height / pixbufscale->to_height, NULL);
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}
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gst_event_unref (event);
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new_event = gst_event_new (GST_EVENT_NAVIGATION);
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new_event->event_data.structure.structure = structure;
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return gst_pad_event_default (pad, new_event);
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break;
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default:
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return gst_pad_event_default (pad, event);
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break;
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}
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}
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static void
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pixbufscale_scale (GstPixbufScale * scale, unsigned char *dest,
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unsigned char *src)
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{
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GdkPixbuf *src_pixbuf, *dest_pixbuf;
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src_pixbuf = gdk_pixbuf_new_from_data
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(src, GDK_COLORSPACE_RGB, FALSE,
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8, scale->from_width, scale->from_height,
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GST_RGB24_ROWSTRIDE (scale->from_width), NULL, NULL);
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dest_pixbuf = gdk_pixbuf_new_from_data
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(dest, GDK_COLORSPACE_RGB, FALSE,
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8, scale->to_width, scale->to_height,
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GST_RGB24_ROWSTRIDE (scale->to_width), NULL, NULL);
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gdk_pixbuf_scale (src_pixbuf, dest_pixbuf, 0, 0, scale->to_width,
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scale->to_height, 0, 0,
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(double) scale->to_width / scale->from_width,
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(double) scale->to_height / scale->from_height, scale->gdk_method);
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dest_pixbuf = gdk_pixbuf_scale_simple
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(src_pixbuf, scale->to_width, scale->to_height, scale->gdk_method);
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g_object_unref (src_pixbuf);
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g_object_unref (dest_pixbuf);
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}
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static void
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gst_pixbufscale_chain (GstPad * pad, GstData * _data)
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{
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GstBuffer *buf = GST_BUFFER (_data);
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GstPixbufScale *pixbufscale;
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guchar *data;
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gulong size;
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GstBuffer *outbuf;
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g_return_if_fail (pad != NULL);
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g_return_if_fail (GST_IS_PAD (pad));
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g_return_if_fail (buf != NULL);
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pixbufscale = GST_PIXBUFSCALE (gst_pad_get_parent (pad));
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g_return_if_fail (pixbufscale->inited);
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data = GST_BUFFER_DATA (buf);
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size = GST_BUFFER_SIZE (buf);
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if (pixbufscale->passthru) {
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GST_LOG_OBJECT (pixbufscale, "passing through buffer of %ld bytes in '%s'",
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size, GST_OBJECT_NAME (pixbufscale));
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gst_pad_push (pixbufscale->srcpad, GST_DATA (buf));
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return;
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}
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GST_LOG_OBJECT (pixbufscale, "got buffer of %ld bytes in '%s'", size,
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GST_OBJECT_NAME (pixbufscale));
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GST_LOG_OBJECT (pixbufscale,
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"size=%ld from=%dx%d to=%dx%d fromsize=%ld (should be %d) tosize=%d",
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size, pixbufscale->from_width, pixbufscale->from_height,
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pixbufscale->to_width, pixbufscale->to_height, size,
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pixbufscale->from_buf_size, pixbufscale->to_buf_size);
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if (size != pixbufscale->from_buf_size) {
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GST_ERROR ("Incoming RGB data is %d bytes (expected: %d bytes) (%dx%d)\n",
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size, pixbufscale->from_buf_size, pixbufscale->from_width,
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pixbufscale->from_height);
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return;
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}
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outbuf = gst_pad_alloc_buffer (pixbufscale->srcpad,
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GST_BUFFER_OFFSET_NONE, pixbufscale->to_buf_size);
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gst_buffer_stamp (outbuf, buf);
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pixbufscale_scale (pixbufscale, GST_BUFFER_DATA (outbuf), data);
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GST_DEBUG_OBJECT (pixbufscale, "pushing buffer of %d bytes in '%s'",
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GST_BUFFER_SIZE (outbuf), GST_OBJECT_NAME (pixbufscale));
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gst_pad_push (pixbufscale->srcpad, GST_DATA (outbuf));
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gst_buffer_unref (buf);
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}
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static void
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gst_pixbufscale_set_property (GObject * object, guint prop_id,
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const GValue * value, GParamSpec * pspec)
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{
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GstPixbufScale *src;
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g_return_if_fail (GST_IS_PIXBUFSCALE (object));
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src = GST_PIXBUFSCALE (object);
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switch (prop_id) {
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case ARG_METHOD:
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src->method = g_value_get_enum (value);
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switch (src->method) {
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case GST_PIXBUFSCALE_NEAREST:
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src->gdk_method = GDK_INTERP_NEAREST;
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break;
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case GST_PIXBUFSCALE_TILES:
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src->gdk_method = GDK_INTERP_TILES;
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break;
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case GST_PIXBUFSCALE_BILINEAR:
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src->gdk_method = GDK_INTERP_BILINEAR;
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break;
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case GST_PIXBUFSCALE_HYPER:
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src->gdk_method = GDK_INTERP_HYPER;
|
|
break;
|
|
}
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void
|
|
gst_pixbufscale_get_property (GObject * object, guint prop_id, GValue * value,
|
|
GParamSpec * pspec)
|
|
{
|
|
GstPixbufScale *src;
|
|
|
|
g_return_if_fail (GST_IS_PIXBUFSCALE (object));
|
|
src = GST_PIXBUFSCALE (object);
|
|
|
|
switch (prop_id) {
|
|
case ARG_METHOD:
|
|
g_value_set_enum (value, src->method);
|
|
break;
|
|
default:
|
|
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
|
|
break;
|
|
}
|
|
}
|
|
|
|
|
|
gboolean
|
|
pixbufscale_init (GstPlugin * plugin)
|
|
{
|
|
if (!gst_element_register (plugin, "gdkpixbufscale", GST_RANK_NONE,
|
|
GST_TYPE_PIXBUFSCALE))
|
|
return FALSE;
|
|
|
|
GST_DEBUG_CATEGORY_INIT (pixbufscale_debug, "gdkpixbufscale", 0,
|
|
"pixbufscale element");
|
|
|
|
return TRUE;
|
|
}
|