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99fc32962a
Original commit message from CVS: 2005-08-28 Andy Wingo <wingo@pobox.com> * Updates for two-arg init from GST_BOILERPLATE. * ext/ladspa/gstsignalprocessor.c (gst_signal_processor_init): Use the second arg for the class, because G_OBJECT_GET_CLASS (self) returns the wrong thing. (gst_signal_processor_add_pad_from_template): Make pads of the right type. * ext/ladspa/gstladspa.c (gst_ladspa_class_get_param_spec): Make writable param specs G_PARAM_CONSTRUCT so default values work. (gst_ladspa_init): Use the second arg for the class.
377 lines
11 KiB
C
377 lines
11 KiB
C
/* 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, N in 1 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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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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#include "gstaggregator.h"
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static GstStaticPadTemplate srctemplate = 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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GST_DEBUG_CATEGORY_STATIC (gst_aggregator_debug);
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#define GST_CAT_DEFAULT gst_aggregator_debug
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GstElementDetails gst_aggregator_details =
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GST_ELEMENT_DETAILS ("Aggregator pipe fitting",
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"Generic",
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"N-to-1 pipe fitting",
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"Wim Taymans <wim.taymans@chello.be>");
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/* Aggregator 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_NUM_PADS,
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ARG_SILENT,
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ARG_SCHED,
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ARG_LAST_MESSAGE
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/* FILL ME */
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};
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GstStaticPadTemplate aggregator_src_template =
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GST_STATIC_PAD_TEMPLATE ("sink%d",
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GST_PAD_SINK,
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GST_PAD_REQUEST,
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GST_STATIC_CAPS_ANY);
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#define GST_TYPE_AGGREGATOR_SCHED (gst_aggregator_sched_get_type())
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static GType
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gst_aggregator_sched_get_type (void)
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{
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static GType aggregator_sched_type = 0;
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static GEnumValue aggregator_sched[] = {
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{AGGREGATOR_LOOP, "1", "Loop Based"},
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{AGGREGATOR_LOOP_SELECT, "3", "Loop Based Select"},
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{AGGREGATOR_CHAIN, "4", "Chain Based"},
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{0, NULL, NULL},
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};
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if (!aggregator_sched_type) {
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aggregator_sched_type =
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g_enum_register_static ("GstAggregatorSched", aggregator_sched);
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}
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return aggregator_sched_type;
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}
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#define AGGREGATOR_IS_LOOP_BASED(ag) ((ag)->sched != AGGREGATOR_CHAIN)
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static GstPad *gst_aggregator_request_new_pad (GstElement * element,
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GstPadTemplate * temp, const gchar * unused);
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static void gst_aggregator_update_functions (GstAggregator * aggregator);
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static void gst_aggregator_finalize (GObject * object);
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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, GstData * _data);
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static void gst_aggregator_loop (GstElement * element);
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#define _do_init(bla) \
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GST_DEBUG_CATEGORY_INIT (gst_aggregator_debug, "aggregator", 0, "aggregator element");
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GST_BOILERPLATE_FULL (GstAggregator, gst_aggregator, GstElement,
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GST_TYPE_ELEMENT, _do_init);
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static void
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gst_aggregator_base_init (gpointer g_class)
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{
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GstElementClass *gstelement_class = GST_ELEMENT_CLASS (g_class);
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gst_element_class_add_pad_template (gstelement_class,
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gst_static_pad_template_get (&aggregator_src_template));
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gst_element_class_add_pad_template (gstelement_class,
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gst_static_pad_template_get (&srctemplate));
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gst_element_class_set_details (gstelement_class, &gst_aggregator_details);
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}
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static void
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gst_aggregator_finalize (GObject * object)
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{
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GstAggregator *aggregator;
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aggregator = GST_AGGREGATOR (object);
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g_list_free (aggregator->sinkpads);
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g_free (aggregator->last_message);
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G_OBJECT_CLASS (parent_class)->finalize (object);
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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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gobject_class->set_property = GST_DEBUG_FUNCPTR (gst_aggregator_set_property);
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gobject_class->get_property = GST_DEBUG_FUNCPTR (gst_aggregator_get_property);
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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", "The number of source 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", "Don't produce messages",
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FALSE, G_PARAM_READWRITE));
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g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_SCHED,
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g_param_spec_enum ("sched", "Scheduling",
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"The type of scheduling this element should use",
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GST_TYPE_AGGREGATOR_SCHED, AGGREGATOR_CHAIN, G_PARAM_READWRITE));
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g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_LAST_MESSAGE,
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g_param_spec_string ("last_message", "Last message",
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"The current state of the element", NULL, G_PARAM_READABLE));
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gobject_class->finalize = GST_DEBUG_FUNCPTR (gst_aggregator_finalize);
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gstelement_class->request_new_pad =
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GST_DEBUG_FUNCPTR (gst_aggregator_request_new_pad);
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}
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static void
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gst_aggregator_init (GstAggregator * aggregator, GstAggregatorClass * g_class)
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{
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aggregator->srcpad =
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gst_pad_new_from_template (gst_static_pad_template_get (&srctemplate),
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"src");
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gst_pad_set_getcaps_function (aggregator->srcpad, gst_pad_proxy_getcaps);
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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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aggregator->sched = AGGREGATOR_LOOP;
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aggregator->last_message = NULL;
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gst_aggregator_update_functions (aggregator);
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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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const gchar * unused)
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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 sink 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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g_free (name);
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if (!AGGREGATOR_IS_LOOP_BASED (aggregator)) {
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gst_pad_set_chain_function (sinkpad, gst_aggregator_chain);
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}
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gst_pad_set_getcaps_function (sinkpad, gst_pad_proxy_getcaps);
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gst_element_add_pad (GST_ELEMENT (aggregator), sinkpad);
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aggregator->sinkpads = g_list_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_update_functions (GstAggregator * aggregator)
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{
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GList *pads;
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if (AGGREGATOR_IS_LOOP_BASED (aggregator)) {
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gst_element_set_loop_function (GST_ELEMENT (aggregator),
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GST_DEBUG_FUNCPTR (gst_aggregator_loop));
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} else {
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gst_element_set_loop_function (GST_ELEMENT (aggregator), NULL);
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}
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pads = aggregator->sinkpads;
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while (pads) {
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GstPad *pad = GST_PAD (pads->data);
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if (AGGREGATOR_IS_LOOP_BASED (aggregator)) {
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gst_pad_set_get_function (pad, NULL);
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} else {
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gst_element_set_loop_function (GST_ELEMENT (aggregator), NULL);
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}
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pads = g_list_next (pads);
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}
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}
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static void
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gst_aggregator_set_property (GObject * object, guint prop_id,
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const GValue * value, GParamSpec * pspec)
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{
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GstAggregator *aggregator;
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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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case ARG_SCHED:
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aggregator->sched = g_value_get_enum (value);
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gst_aggregator_update_functions (aggregator);
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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,
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GParamSpec * pspec)
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{
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GstAggregator *aggregator;
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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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case ARG_SCHED:
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g_value_set_enum (value, aggregator->sched);
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break;
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case ARG_LAST_MESSAGE:
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g_value_set_string (value, aggregator->last_message);
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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_push (GstAggregator * aggregator, GstPad * pad, GstBuffer * buf,
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guchar * debug)
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{
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if (!aggregator->silent) {
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g_free (aggregator->last_message);
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aggregator->last_message =
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g_strdup_printf ("%10.10s ******* (%s:%s)a (%d bytes, %"
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G_GUINT64_FORMAT ")", debug, GST_DEBUG_PAD_NAME (pad),
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GST_BUFFER_SIZE (buf), GST_BUFFER_TIMESTAMP (buf));
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g_object_notify (G_OBJECT (aggregator), "last_message");
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}
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gst_pad_push (aggregator->srcpad, GST_DATA (buf));
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}
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static void
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gst_aggregator_loop (GstElement * element)
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{
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GstAggregator *aggregator;
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GstBuffer *buf;
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guchar *debug;
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aggregator = GST_AGGREGATOR (element);
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if (aggregator->sched == AGGREGATOR_LOOP) {
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GList *pads = aggregator->sinkpads;
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/* we'll loop over all pads and try to pull from all
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* active ones */
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while (pads) {
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GstPad *pad = GST_PAD (pads->data);
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pads = g_list_next (pads);
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/* we need to check is the pad is usable. IS_USABLE will check
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* if the pad is linked, if it is enabled (the element is
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* playing and the app didn't gst_pad_set_enabled (pad, FALSE))
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* and that the peer pad is also enabled.
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*/
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if (GST_PAD_IS_USABLE (pad)) {
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buf = GST_BUFFER (gst_pad_pull (pad));
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debug = "loop";
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/* then push it forward */
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gst_aggregator_push (aggregator, pad, buf, debug);
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}
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}
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} else {
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if (aggregator->sched == AGGREGATOR_LOOP_SELECT) {
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GstPad *pad;
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debug = "loop_select";
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buf = GST_BUFFER (gst_pad_collectv (&pad, aggregator->sinkpads));
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gst_aggregator_push (aggregator, pad, buf, debug);
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} else {
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g_assert_not_reached ();
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}
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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, GstData * _data)
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{
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GstBuffer *buf = GST_BUFFER (_data);
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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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gst_aggregator_push (aggregator, pad, buf, "chain");
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}
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