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381 lines
10 KiB
C
381 lines
10 KiB
C
/* GStreamer
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* Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
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* 2000,2001,2002,2003,2004,2005 Wim Taymans <wim@fluendo.com>
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*
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*
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* gsttee.c: Tee 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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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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#include "gsttee.h"
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#include <string.h>
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static GstStaticPadTemplate sinktemplate = 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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GST_DEBUG_CATEGORY_STATIC (gst_tee_debug);
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#define GST_CAT_DEFAULT gst_tee_debug
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static GstElementDetails gst_tee_details =
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GST_ELEMENT_DETAILS ("Tee pipe fitting",
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"Generic",
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"1-to-N pipe fitting",
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"Erik Walthinsen <omega@cse.ogi.edu>, "
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"Wim \"Tim\" Taymans <wim@fluendo.com>");
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enum
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{
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PROP_0,
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PROP_NUM_SRC_PADS,
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PROP_HAS_SINK_LOOP,
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PROP_HAS_CHAIN,
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PROP_SILENT,
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PROP_LAST_MESSAGE
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/* FILL ME */
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};
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GstStaticPadTemplate tee_src_template = GST_STATIC_PAD_TEMPLATE ("src%d",
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GST_PAD_SRC,
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GST_PAD_REQUEST,
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GST_STATIC_CAPS_ANY);
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#define _do_init(bla) \
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GST_DEBUG_CATEGORY_INIT (gst_tee_debug, "tee", 0, "tee element");
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GST_BOILERPLATE_FULL (GstTee, gst_tee, GstElement, GST_TYPE_ELEMENT, _do_init);
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static GstPad *gst_tee_request_new_pad (GstElement * element,
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GstPadTemplate * temp, const gchar * unused);
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static void gst_tee_finalize (GObject * object);
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static void gst_tee_set_property (GObject * object, guint prop_id,
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const GValue * value, GParamSpec * pspec);
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static void gst_tee_get_property (GObject * object, guint prop_id,
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GValue * value, GParamSpec * pspec);
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static GstFlowReturn gst_tee_chain (GstPad * pad, GstBuffer * buffer);
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static void gst_tee_loop (GstPad * pad);
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static gboolean gst_tee_sink_activate_push (GstPad * pad, gboolean active);
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static gboolean gst_tee_sink_activate_pull (GstPad * pad, gboolean active);
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static void
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gst_tee_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 (&sinktemplate));
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gst_element_class_set_details (gstelement_class, &gst_tee_details);
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gst_element_class_add_pad_template (gstelement_class,
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gst_static_pad_template_get (&tee_src_template));
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}
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static void
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gst_tee_finalize (GObject * object)
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{
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GstTee *tee;
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tee = GST_TEE (object);
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g_free (tee->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_tee_class_init (GstTeeClass * 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->finalize = GST_DEBUG_FUNCPTR (gst_tee_finalize);
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gobject_class->set_property = GST_DEBUG_FUNCPTR (gst_tee_set_property);
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gobject_class->get_property = GST_DEBUG_FUNCPTR (gst_tee_get_property);
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g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_NUM_SRC_PADS,
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g_param_spec_int ("num-src-pads", "num-src-pads", "num-src-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), PROP_HAS_SINK_LOOP,
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g_param_spec_boolean ("has-sink-loop", "has-sink-loop", "has-sink-loop",
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FALSE, G_PARAM_CONSTRUCT | G_PARAM_READWRITE));
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g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_HAS_CHAIN,
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g_param_spec_boolean ("has-chain", "has-chain", "has-chain",
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TRUE, G_PARAM_CONSTRUCT | G_PARAM_READWRITE));
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g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_SILENT,
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g_param_spec_boolean ("silent", "silent", "silent",
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TRUE, G_PARAM_CONSTRUCT | G_PARAM_READWRITE));
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g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_LAST_MESSAGE,
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g_param_spec_string ("last_message", "last_message", "last_message",
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NULL, G_PARAM_READABLE));
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gstelement_class->request_new_pad =
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GST_DEBUG_FUNCPTR (gst_tee_request_new_pad);
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}
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static void
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gst_tee_init (GstTee * tee, GstTeeClass * g_class)
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{
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tee->sinkpad =
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gst_pad_new_from_template (gst_static_pad_template_get (&sinktemplate),
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"sink");
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gst_pad_set_setcaps_function (tee->sinkpad,
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GST_DEBUG_FUNCPTR (gst_pad_proxy_setcaps));
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gst_pad_set_getcaps_function (tee->sinkpad,
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GST_DEBUG_FUNCPTR (gst_pad_proxy_getcaps));
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gst_element_add_pad (GST_ELEMENT (tee), tee->sinkpad);
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tee->last_message = NULL;
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}
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static void
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gst_tee_update_pad_functions (GstTee * tee)
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{
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gst_pad_set_activatepush_function (tee->sinkpad,
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GST_DEBUG_FUNCPTR (gst_tee_sink_activate_push));
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gst_pad_set_activatepull_function (tee->sinkpad,
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GST_DEBUG_FUNCPTR (gst_tee_sink_activate_pull));
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if (tee->has_chain)
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gst_pad_set_chain_function (tee->sinkpad,
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GST_DEBUG_FUNCPTR (gst_tee_chain));
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else
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gst_pad_set_chain_function (tee->sinkpad, NULL);
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}
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static GstPad *
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gst_tee_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 *srcpad;
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GstTee *tee;
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tee = GST_TEE (element);
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GST_LOCK (tee);
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name = g_strdup_printf ("src%d", tee->pad_counter++);
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GST_UNLOCK (tee);
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srcpad = gst_pad_new_from_template (templ, name);
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g_free (name);
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gst_pad_set_setcaps_function (srcpad,
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GST_DEBUG_FUNCPTR (gst_pad_proxy_setcaps));
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gst_pad_set_getcaps_function (srcpad,
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GST_DEBUG_FUNCPTR (gst_pad_proxy_getcaps));
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gst_element_add_pad (GST_ELEMENT (tee), srcpad);
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return srcpad;
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}
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static void
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gst_tee_set_property (GObject * object, guint prop_id, const GValue * value,
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GParamSpec * pspec)
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{
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GstTee *tee = GST_TEE (object);
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GST_LOCK (tee);
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switch (prop_id) {
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case PROP_HAS_SINK_LOOP:
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tee->has_sink_loop = g_value_get_boolean (value);
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gst_tee_update_pad_functions (tee);
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break;
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case PROP_HAS_CHAIN:
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tee->has_chain = g_value_get_boolean (value);
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gst_tee_update_pad_functions (tee);
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break;
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case PROP_SILENT:
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tee->silent = g_value_get_boolean (value);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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}
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GST_UNLOCK (tee);
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}
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static void
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gst_tee_get_property (GObject * object, guint prop_id, GValue * value,
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GParamSpec * pspec)
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{
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GstTee *tee = GST_TEE (object);
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GST_LOCK (tee);
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switch (prop_id) {
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case PROP_NUM_SRC_PADS:
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g_value_set_int (value, GST_ELEMENT (tee)->numsrcpads);
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break;
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case PROP_HAS_SINK_LOOP:
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g_value_set_boolean (value, tee->has_sink_loop);
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break;
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case PROP_HAS_CHAIN:
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g_value_set_boolean (value, tee->has_chain);
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break;
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case PROP_SILENT:
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g_value_set_boolean (value, tee->silent);
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break;
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case PROP_LAST_MESSAGE:
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g_value_set_string (value, tee->last_message);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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}
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GST_UNLOCK (tee);
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}
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typedef struct
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{
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GstTee *tee;
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GstBuffer *buffer;
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} PushData;
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static gboolean
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gst_tee_do_push (GstPad * pad, GValue * ret, PushData * data)
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{
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GstFlowReturn res;
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if (G_UNLIKELY (!data->tee->silent)) {
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GstTee *tee = data->tee;
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GstBuffer *buf = data->buffer;
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g_free (tee->last_message);
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tee->last_message =
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g_strdup_printf ("chain ******* (%s:%s)t (%d bytes, %"
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G_GUINT64_FORMAT ") %p", GST_DEBUG_PAD_NAME (pad),
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GST_BUFFER_SIZE (buf), GST_BUFFER_TIMESTAMP (buf), buf);
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g_object_notify (G_OBJECT (tee), "last_message");
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}
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res = gst_pad_push (pad, gst_buffer_ref (data->buffer));
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g_value_set_enum (ret, res);
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gst_object_unref (pad);
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return (res == GST_FLOW_OK);
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}
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static GstFlowReturn
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gst_tee_handle_buffer (GstTee * tee, GstBuffer * buffer)
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{
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GstIterator *iter;
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PushData data;
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GValue ret = { 0, };
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GstIteratorResult res;
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tee->offset += GST_BUFFER_SIZE (buffer);
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g_value_init (&ret, GST_TYPE_FLOW_RETURN);
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iter = gst_element_iterate_src_pads (GST_ELEMENT (tee));
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data.tee = tee;
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data.buffer = buffer;
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res = gst_iterator_fold (iter, (GstIteratorFoldFunction) gst_tee_do_push,
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&ret, &data);
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gst_iterator_free (iter);
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gst_buffer_unref (buffer);
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/* no need to unset gvalue */
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return g_value_get_enum (&ret);
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}
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static GstFlowReturn
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gst_tee_chain (GstPad * pad, GstBuffer * buffer)
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{
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GstFlowReturn res;
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GstTee *tee;
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tee = GST_TEE (GST_PAD_PARENT (pad));
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res = gst_tee_handle_buffer (tee, buffer);
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return res;
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}
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#define DEFAULT_SIZE 1024
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static void
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gst_tee_loop (GstPad * pad)
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{
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GstBuffer *buffer;
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GstFlowReturn res;
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GstTee *tee;
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tee = GST_TEE (GST_PAD_PARENT (pad));
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res = gst_pad_pull_range (pad, tee->offset, DEFAULT_SIZE, &buffer);
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if (res != GST_FLOW_OK)
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goto pause_task;
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res = gst_tee_handle_buffer (tee, buffer);
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if (res != GST_FLOW_OK)
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goto pause_task;
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return;
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pause_task:
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{
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gst_pad_pause_task (pad);
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return;
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}
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}
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static gboolean
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gst_tee_sink_activate_push (GstPad * pad, gboolean active)
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{
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GstTee *tee;
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tee = GST_TEE (GST_OBJECT_PARENT (pad));
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tee->sink_mode = active && GST_ACTIVATE_PUSH;
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if (active) {
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g_return_val_if_fail (tee->has_chain, FALSE);
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}
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return TRUE;
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}
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/* won't be called until we implement an activate function */
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static gboolean
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gst_tee_sink_activate_pull (GstPad * pad, gboolean active)
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{
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GstTee *tee;
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tee = GST_TEE (GST_OBJECT_PARENT (pad));
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tee->sink_mode = active && GST_ACTIVATE_PULL;
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if (active) {
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g_return_val_if_fail (tee->has_sink_loop, FALSE);
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return gst_pad_start_task (pad, (GstTaskFunction) gst_tee_loop, pad);
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} else {
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return gst_pad_stop_task (pad);
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}
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}
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