/* GStreamer * Copyright (C) 1999,2000 Erik Walthinsen * 2000 Wim Taymans * * gstidentity.c: * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Library General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Library General Public License for more details. * * You should have received a copy of the GNU Library General Public * License along with this library; if not, write to the * Free Software Foundation, Inc., 59 Temple Place - Suite 330, * Boston, MA 02111-1307, USA. */ #include GstElementDetails gst_identity_details = { "Identity", "Filter", "Pass data without modification", VERSION, "Erik Walthinsen ", "(C) 1999", }; /* Identity signals and args */ enum { /* FILL ME */ LAST_SIGNAL }; enum { ARG_0, ARG_LOOP_BASED, ARG_SLEEP_TIME, ARG_SILENT, }; static void gst_identity_class_init (GstIdentityClass *klass); static void gst_identity_init (GstIdentity *identity); static void gst_identity_set_arg (GtkObject *object, GtkArg *arg, guint id); static void gst_identity_get_arg (GtkObject *object, GtkArg *arg, guint id); static void gst_identity_chain (GstPad *pad, GstBuffer *buf); static GstElementClass *parent_class = NULL; //static guint gst_identity_signals[LAST_SIGNAL] = { 0 }; GtkType gst_identity_get_type (void) { static GtkType identity_type = 0; if (!identity_type) { static const GtkTypeInfo identity_info = { "GstIdentity", sizeof(GstIdentity), sizeof(GstIdentityClass), (GtkClassInitFunc)gst_identity_class_init, (GtkObjectInitFunc)gst_identity_init, (GtkArgSetFunc)gst_identity_set_arg, (GtkArgGetFunc)gst_identity_get_arg, (GtkClassInitFunc)NULL, }; identity_type = gtk_type_unique (GST_TYPE_ELEMENT, &identity_info); } return identity_type; } static void gst_identity_class_init (GstIdentityClass *klass) { GtkObjectClass *gtkobject_class; gtkobject_class = (GtkObjectClass*)klass; parent_class = gtk_type_class (GST_TYPE_ELEMENT); gtk_object_add_arg_type ("GstIdentity::loop_based", GTK_TYPE_BOOL, GTK_ARG_READWRITE, ARG_LOOP_BASED); gtk_object_add_arg_type ("GstIdentity::sleep_time", GTK_TYPE_UINT, GTK_ARG_READWRITE, ARG_SLEEP_TIME); gtk_object_add_arg_type ("GstIdentity::silent", GTK_TYPE_BOOL, GTK_ARG_READWRITE, ARG_SILENT); gtkobject_class->set_arg = gst_identity_set_arg; gtkobject_class->get_arg = gst_identity_get_arg; } static GstBufferPool* gst_identity_get_bufferpool (GstPad *pad) { GstIdentity *identity; identity = GST_IDENTITY (gst_pad_get_parent (pad)); return gst_pad_get_bufferpool (identity->srcpad); } static GstPadNegotiateReturn gst_identity_negotiate_src (GstPad *pad, GstCaps **caps, gpointer *data) { GstIdentity *identity; identity = GST_IDENTITY (gst_pad_get_parent (pad)); return gst_pad_negotiate_proxy (pad, identity->sinkpad, caps); } static GstPadNegotiateReturn gst_identity_negotiate_sink (GstPad *pad, GstCaps **caps, gpointer *data) { GstIdentity *identity; identity = GST_IDENTITY (gst_pad_get_parent (pad)); return gst_pad_negotiate_proxy (pad, identity->srcpad, caps); } static void gst_identity_init (GstIdentity *identity) { identity->sinkpad = gst_pad_new ("sink", GST_PAD_SINK); gst_element_add_pad (GST_ELEMENT (identity), identity->sinkpad); gst_pad_set_chain_function (identity->sinkpad, gst_identity_chain); gst_pad_set_bufferpool_function (identity->sinkpad, gst_identity_get_bufferpool); gst_pad_set_negotiate_function (identity->sinkpad, gst_identity_negotiate_sink); identity->srcpad = gst_pad_new ("src", GST_PAD_SRC); gst_element_add_pad (GST_ELEMENT (identity), identity->srcpad); gst_pad_set_negotiate_function (identity->srcpad, gst_identity_negotiate_src); identity->loop_based = FALSE; identity->sleep_time = 0; identity->silent = FALSE; } static void gst_identity_chain (GstPad *pad, GstBuffer *buf) { GstIdentity *identity; g_return_if_fail (pad != NULL); g_return_if_fail (GST_IS_PAD (pad)); g_return_if_fail (buf != NULL); identity = GST_IDENTITY (gst_pad_get_parent (pad)); if (!identity->silent) g_print("identity: ******* (%s:%s)i \n",GST_DEBUG_PAD_NAME(pad)); gst_pad_push (identity->srcpad, buf); if (identity->sleep_time) usleep (identity->sleep_time); } static void gst_identity_loop (GstElement *element) { GstIdentity *identity; GstBuffer *buf; g_return_if_fail (element != NULL); g_return_if_fail (GST_IS_IDENTITY (element)); identity = GST_IDENTITY (element); do { buf = gst_pad_pull (identity->sinkpad); g_print("identity: ******* (%s:%s)i \n",GST_DEBUG_PAD_NAME(identity->sinkpad)); gst_pad_push (identity->srcpad, buf); if (identity->sleep_time) usleep (identity->sleep_time); } while (!GST_ELEMENT_IS_COTHREAD_STOPPING(element)); } static void gst_identity_set_arg (GtkObject *object, GtkArg *arg, guint id) { GstIdentity *identity; /* it's not null if we got it, but it might not be ours */ g_return_if_fail (GST_IS_IDENTITY (object)); identity = GST_IDENTITY (object); switch(id) { case ARG_LOOP_BASED: identity->loop_based = GTK_VALUE_BOOL (*arg); if (identity->loop_based) { gst_element_set_loop_function (GST_ELEMENT (identity), gst_identity_loop); gst_pad_set_chain_function (identity->sinkpad, NULL); } else { gst_pad_set_chain_function (identity->sinkpad, gst_identity_chain); gst_element_set_loop_function (GST_ELEMENT (identity), NULL); } break; case ARG_SLEEP_TIME: identity->sleep_time = GTK_VALUE_UINT (*arg); break; case ARG_SILENT: identity->silent = GTK_VALUE_BOOL (*arg); break; default: break; } } static void gst_identity_get_arg(GtkObject *object,GtkArg *arg,guint id) { GstIdentity *identity; /* it's not null if we got it, but it might not be ours */ g_return_if_fail (GST_IS_IDENTITY (object)); identity = GST_IDENTITY (object); switch (id) { case ARG_LOOP_BASED: GTK_VALUE_BOOL (*arg) = identity->loop_based; break; case ARG_SLEEP_TIME: GTK_VALUE_UINT (*arg) = identity->sleep_time; break; case ARG_SILENT: GTK_VALUE_BOOL (*arg) = identity->silent; break; default: arg->type = GTK_TYPE_INVALID; break; } }