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Original commit message from CVS: * ext/flac/gstflactag.c: * gst/alpha/gstalpha.c: * gst/debug/breakmydata.c: * gst/debug/negotiation.c: * gst/debug/testplugin.c: * gst/effectv/gstaging.c: * gst/effectv/gstdice.c: * gst/effectv/gstedge.c: * gst/effectv/gstquark.c: * gst/effectv/gstrev.c: * gst/effectv/gstshagadelic.c: * gst/effectv/gstvertigo.c: * gst/effectv/gstwarp.c: * gst/multipart/multipartdemux.c: * gst/multipart/multipartmux.c: * gst/videobox/gstvideobox.c: * gst/videofilter/gstgamma.c: * gst/videofilter/gstvideotemplate.c: * gst/videomixer/videomixer.c: * sys/sunaudio/gstsunaudiosrc.h: More G_OBJECT macro fixing.
305 lines
8.3 KiB
C
305 lines
8.3 KiB
C
/*
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* GStreamer
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* Copyright (C) 1999-2001 Erik Walthinsen <omega@cse.ogi.edu>
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* Copyright (C) 2002 David A. Schleef <ds@schleef.org>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#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 <string.h>
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#include <unistd.h>
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#include <sys/mman.h>
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#define GST_TYPE_NEGOTIATION \
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(gst_gst_negotiation_get_type())
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#define GST_NEGOTIATION(obj) \
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(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_NEGOTIATION,GstNegotiation))
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#define GST_NEGOTIATION_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_NEGOTIATION,GstNegotiation))
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#define GST_IS_NEGOTIATION(obj) \
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(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_NEGOTIATION))
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#define GST_IS_NEGOTIATION_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_NEGOTIATION))
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typedef struct _GstNegotiation GstNegotiation;
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typedef struct _GstNegotiationClass GstNegotiationClass;
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struct _GstNegotiation
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{
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GstElement element;
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GstPad *sinkpad, *srcpad;
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GstCaps *caps;
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};
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struct _GstNegotiationClass
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{
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GstElementClass parent_class;
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};
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GType gst_gst_negotiation_get_type (void);
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static const GstElementDetails plugin_details =
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GST_ELEMENT_DETAILS ("Negotiation",
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"Testing",
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"This element acts like identity, except that one can control how "
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"negotiation works",
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"David A. Schleef <ds@schleef.org>");
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/* Filter 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_ALLOWED_CAPS
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};
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static GstStaticPadTemplate gst_negotiation_sink_factory =
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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_ANY);
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static GstStaticPadTemplate gst_negotiation_src_factory =
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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_ANY);
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static void gst_negotiation_base_init (gpointer g_class);
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static void gst_negotiation_class_init (GstNegotiationClass * klass);
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static void gst_negotiation_init (GstNegotiation * filter);
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static GstCaps *gst_negotiation_getcaps (GstPad * pad);
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static GstPadLinkReturn gst_negotiation_pad_link (GstPad * pad,
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const GstCaps * caps);
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static void gst_negotiation_set_property (GObject * object, guint prop_id,
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const GValue * value, GParamSpec * pspec);
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static void gst_negotiation_get_property (GObject * object, guint prop_id,
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GValue * value, GParamSpec * pspec);
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static void gst_negotiation_update_caps (GstNegotiation * negotiation);
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static void gst_negotiation_chain (GstPad * pad, GstData * _data);
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static GstElementClass *parent_class = NULL;
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typedef struct _GstFencedBuffer GstFencedBuffer;
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struct _GstFencedBuffer
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{
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GstBuffer buffer;
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void *region;
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unsigned int length;
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};
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GType
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gst_gst_negotiation_get_type (void)
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{
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static GType plugin_type = 0;
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if (!plugin_type) {
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static const GTypeInfo plugin_info = {
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sizeof (GstNegotiationClass),
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gst_negotiation_base_init,
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NULL,
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(GClassInitFunc) gst_negotiation_class_init,
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NULL,
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NULL,
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sizeof (GstNegotiation),
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0,
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(GInstanceInitFunc) gst_negotiation_init,
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};
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plugin_type = g_type_register_static (GST_TYPE_ELEMENT,
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"GstNegotiation", &plugin_info, 0);
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}
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return plugin_type;
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}
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static void
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gst_negotiation_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_add_pad_template (element_class,
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gst_static_pad_template_get (&gst_negotiation_sink_factory));
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gst_element_class_add_pad_template (element_class,
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gst_static_pad_template_get (&gst_negotiation_src_factory));
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gst_element_class_set_details (element_class, &plugin_details);
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}
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static void
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gst_negotiation_class_init (GstNegotiationClass * 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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parent_class = g_type_class_peek_parent (klass);
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gobject_class->set_property = gst_negotiation_set_property;
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gobject_class->get_property = gst_negotiation_get_property;
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g_object_class_install_property (gobject_class, ARG_ALLOWED_CAPS,
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g_param_spec_boxed ("allowed-caps", "Caps",
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"The range of formats allowed by " "this element's peers",
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GST_TYPE_CAPS, G_PARAM_READABLE));
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}
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static void
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gst_negotiation_init (GstNegotiation * filter)
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{
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filter->sinkpad =
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gst_pad_new_from_static_template (&gst_negotiation_sink_factory, "sink");
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gst_pad_set_getcaps_function (filter->sinkpad, gst_negotiation_getcaps);
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gst_pad_set_link_function (filter->sinkpad, gst_negotiation_pad_link);
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filter->srcpad =
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gst_pad_new_from_static_template (&gst_negotiation_src_factory, "src");
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gst_pad_set_getcaps_function (filter->srcpad, gst_negotiation_getcaps);
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gst_pad_set_link_function (filter->srcpad, gst_negotiation_pad_link);
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gst_element_add_pad (GST_ELEMENT (filter), filter->sinkpad);
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gst_element_add_pad (GST_ELEMENT (filter), filter->srcpad);
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gst_pad_set_chain_function (filter->sinkpad, gst_negotiation_chain);
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}
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static GstCaps *
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gst_negotiation_getcaps (GstPad * pad)
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{
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GstNegotiation *negotiation = GST_NEGOTIATION (gst_pad_get_parent (pad));
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GstPad *otherpad;
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GstCaps *caps;
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otherpad = (pad == negotiation->sinkpad) ? negotiation->srcpad :
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negotiation->sinkpad;
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caps = gst_pad_get_allowed_caps (otherpad);
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GST_ERROR ("getcaps called on %" GST_PTR_FORMAT ", returning %"
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GST_PTR_FORMAT, pad, caps);
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gst_negotiation_update_caps (negotiation);
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gst_object_unref (negotiation);
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return caps;
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}
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static GstPadLinkReturn
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gst_negotiation_pad_link (GstPad * pad, const GstCaps * caps)
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{
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GstNegotiation *negotiation = GST_NEGOTIATION (gst_pad_get_parent (pad));
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GstPad *otherpad;
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GstPadLinkReturn ret;
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otherpad = (pad == negotiation->sinkpad) ? negotiation->srcpad :
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negotiation->sinkpad;
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ret = gst_pad_try_set_caps (otherpad, caps);
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GST_ERROR ("pad_link called on %" GST_PTR_FORMAT " with caps %"
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GST_PTR_FORMAT ", returning %d", pad, caps, ret);
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gst_object_unref (negotiation);
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return ret;
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}
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static void
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gst_negotiation_update_caps (GstNegotiation * negotiation)
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{
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GstCaps *srccaps;
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GstCaps *sinkcaps;
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GstCaps *icaps;
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srccaps = gst_pad_get_allowed_caps (negotiation->srcpad);
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sinkcaps = gst_pad_get_allowed_caps (negotiation->sinkpad);
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icaps = gst_caps_intersect (srccaps, sinkcaps);
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gst_caps_free (srccaps);
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gst_caps_free (sinkcaps);
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gst_caps_replace (&negotiation->caps, icaps);
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g_object_notify (G_OBJECT (negotiation), "allowed-caps");
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GST_DEBUG ("notify %" GST_PTR_FORMAT, icaps);
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}
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static void
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gst_negotiation_chain (GstPad * pad, GstData * _data)
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{
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GstNegotiation *negotiation = GST_NEGOTIATION (gst_pad_get_parent (pad));
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gst_pad_push (negotiation->srcpad, _data);
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gst_object_unref (negotiation);
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}
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static void
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gst_negotiation_set_property (GObject * object, guint prop_id,
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const GValue * value, GParamSpec * pspec)
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{
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GstNegotiation *filter;
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g_return_if_fail (GST_IS_NEGOTIATION (object));
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filter = GST_NEGOTIATION (object);
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switch (prop_id) {
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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_negotiation_get_property (GObject * object, guint prop_id,
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GValue * value, GParamSpec * pspec)
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{
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GstNegotiation *filter;
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g_return_if_fail (GST_IS_NEGOTIATION (object));
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filter = GST_NEGOTIATION (object);
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switch (prop_id) {
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case ARG_ALLOWED_CAPS:
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g_value_set_boxed (value, filter->caps);
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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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gboolean
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gst_negotiation_plugin_init (GstPlugin * plugin)
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{
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if (!gst_element_register (plugin, "negotiation", GST_RANK_NONE,
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GST_TYPE_NEGOTIATION))
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return FALSE;
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return TRUE;
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}
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