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230 lines
6.2 KiB
C
230 lines
6.2 KiB
C
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/* GStreamer
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* Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
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* 2000 Wim Taymans <wim.taymans@chello.be>
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*
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* gstaggregator.c: Aggregator element, one in N out
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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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#include "gstaggregator.h"
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GstElementDetails gst_aggregator_details = {
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"Aggregator pipe fitting",
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"Aggregator",
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"N-to-1 pipe fitting",
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VERSION,
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"Wim Taymans <wim.taymans@chello.be>",
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"(C) 2001",
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};
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/* Aggregator signals and args */
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enum {
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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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ARG_0,
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ARG_NUM_PADS,
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ARG_SILENT,
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/* FILL ME */
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};
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GST_PADTEMPLATE_FACTORY (aggregator_src_factory,
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"sink%d",
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GST_PAD_SINK,
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GST_PAD_REQUEST,
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NULL /* no caps */
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);
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static void gst_aggregator_class_init (GstAggregatorClass *klass);
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static void gst_aggregator_init (GstAggregator *aggregator);
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static GstPad* gst_aggregator_request_new_pad (GstElement *element, GstPadTemplate *temp);
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static void gst_aggregator_set_property (GObject *object, guint prop_id,
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const GValue *value, GParamSpec *pspec);
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static void gst_aggregator_get_property (GObject *object, guint prop_id,
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GValue *value, GParamSpec *pspec);
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static void gst_aggregator_chain (GstPad *pad, GstBuffer *buf);
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static GstElementClass *parent_class = NULL;
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//static guint gst_aggregator_signals[LAST_SIGNAL] = { 0 };
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GType
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gst_aggregator_get_type (void)
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{
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static GType aggregator_type = 0;
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if (!aggregator_type) {
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static const GTypeInfo aggregator_info = {
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sizeof(GstAggregatorClass),
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NULL,
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NULL,
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(GClassInitFunc)gst_aggregator_class_init,
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NULL,
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NULL,
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sizeof(GstAggregator),
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0,
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(GInstanceInitFunc)gst_aggregator_init,
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};
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aggregator_type = g_type_register_static (GST_TYPE_ELEMENT, "GstAggregator", &aggregator_info, 0);
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}
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return aggregator_type;
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}
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static void
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gst_aggregator_class_init (GstAggregatorClass *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_ref (GST_TYPE_ELEMENT);
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g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_NUM_PADS,
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g_param_spec_int ("num_pads", "num_pads", "num_pads",
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0, G_MAXINT, 0, G_PARAM_READABLE));
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g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_SILENT,
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g_param_spec_boolean ("silent", "silent", "silent",
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FALSE, G_PARAM_READWRITE));
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gobject_class->set_property = gst_aggregator_set_property;
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gobject_class->get_property = gst_aggregator_get_property;
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gstelement_class->request_new_pad = gst_aggregator_request_new_pad;
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}
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static void
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gst_aggregator_init (GstAggregator *aggregator)
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{
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aggregator->srcpad = gst_pad_new ("src", GST_PAD_SINK);
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gst_element_add_pad (GST_ELEMENT (aggregator), aggregator->srcpad);
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aggregator->numsinkpads = 0;
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aggregator->sinkpads = NULL;
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aggregator->silent = FALSE;
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}
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static GstPad*
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gst_aggregator_request_new_pad (GstElement *element, GstPadTemplate *templ)
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{
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gchar *name;
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GstPad *sinkpad;
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GstAggregator *aggregator;
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g_return_val_if_fail (GST_IS_AGGREGATOR (element), NULL);
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if (templ->direction != GST_PAD_SINK) {
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g_warning ("gstaggregator: request new pad that is not a SRC pad\n");
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return NULL;
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}
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aggregator = GST_AGGREGATOR (element);
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name = g_strdup_printf ("sink%d",aggregator->numsinkpads);
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sinkpad = gst_pad_new_from_template (templ, name);
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gst_pad_set_chain_function (sinkpad, gst_aggregator_chain);
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gst_element_add_pad (GST_ELEMENT (aggregator), sinkpad);
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aggregator->sinkpads = g_slist_prepend (aggregator->sinkpads, sinkpad);
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aggregator->numsinkpads++;
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return sinkpad;
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}
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static void
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gst_aggregator_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec)
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{
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GstAggregator *aggregator;
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/* it's not null if we got it, but it might not be ours */
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g_return_if_fail (GST_IS_AGGREGATOR (object));
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aggregator = GST_AGGREGATOR (object);
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switch (prop_id) {
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case ARG_SILENT:
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aggregator->silent = g_value_get_boolean (value);
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break;
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default:
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break;
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}
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}
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static void
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gst_aggregator_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec)
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{
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GstAggregator *aggregator;
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/* it's not null if we got it, but it might not be ours */
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g_return_if_fail (GST_IS_AGGREGATOR (object));
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aggregator = GST_AGGREGATOR (object);
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switch (prop_id) {
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case ARG_NUM_PADS:
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g_value_set_int (value, aggregator->numsinkpads);
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break;
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case ARG_SILENT:
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g_value_set_boolean (value, aggregator->silent);
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break;
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default:
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break;
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}
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}
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/**
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* gst_aggregator_chain:
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* @pad: the pad to follow
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* @buf: the buffer to pass
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*
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* Chain a buffer on a pad.
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*/
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static void
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gst_aggregator_chain (GstPad *pad, GstBuffer *buf)
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{
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GstAggregator *aggregator;
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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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aggregator = GST_AGGREGATOR (gst_pad_get_parent (pad));
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gst_trace_add_entry (NULL, 0, buf, "aggregator buffer");
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if (!aggregator->silent)
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g_print("aggregator: chain ******* (%s:%s)a (%d bytes, %llu) \n",
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GST_DEBUG_PAD_NAME (pad), GST_BUFFER_SIZE (buf), GST_BUFFER_TIMESTAMP (buf));
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gst_pad_push (aggregator->srcpad, buf);
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}
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gboolean
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gst_aggregator_factory_init (GstElementFactory *factory)
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{
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gst_elementfactory_add_padtemplate (factory, GST_PADTEMPLATE_GET (aggregator_src_factory));
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return TRUE;
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}
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