mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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13502fc293
Original commit message from CVS: Added some caps != NULL checks. Patched up a problem with the thread handling when the iteration fails. Cleaned up the output of -inspect a tiny bit.
250 lines
6.7 KiB
C
250 lines
6.7 KiB
C
/* GStreamer
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* Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
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* 2000 Wim Taymans <wtay@chello.be>
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*
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* gstidentity.c:
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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 <gstidentity.h>
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GstElementDetails gst_identity_details = {
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"Identity",
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"Filter",
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"Pass data without modification",
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VERSION,
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"Erik Walthinsen <omega@cse.ogi.edu>",
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"(C) 1999",
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};
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/* Identity 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_LOOP_BASED,
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ARG_SLEEP_TIME,
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ARG_SILENT,
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};
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static void gst_identity_class_init (GstIdentityClass *klass);
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static void gst_identity_init (GstIdentity *identity);
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static void gst_identity_set_arg (GtkObject *object, GtkArg *arg, guint id);
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static void gst_identity_get_arg (GtkObject *object, GtkArg *arg, guint id);
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static void gst_identity_chain (GstPad *pad, GstBuffer *buf);
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static GstElementClass *parent_class = NULL;
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//static guint gst_identity_signals[LAST_SIGNAL] = { 0 };
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GtkType
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gst_identity_get_type (void)
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{
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static GtkType identity_type = 0;
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if (!identity_type) {
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static const GtkTypeInfo identity_info = {
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"GstIdentity",
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sizeof(GstIdentity),
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sizeof(GstIdentityClass),
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(GtkClassInitFunc)gst_identity_class_init,
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(GtkObjectInitFunc)gst_identity_init,
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(GtkArgSetFunc)gst_identity_set_arg,
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(GtkArgGetFunc)gst_identity_get_arg,
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(GtkClassInitFunc)NULL,
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};
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identity_type = gtk_type_unique (GST_TYPE_ELEMENT, &identity_info);
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}
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return identity_type;
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}
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static void
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gst_identity_class_init (GstIdentityClass *klass)
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{
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GtkObjectClass *gtkobject_class;
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gtkobject_class = (GtkObjectClass*)klass;
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parent_class = gtk_type_class (GST_TYPE_ELEMENT);
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gtk_object_add_arg_type ("GstIdentity::loop_based", GTK_TYPE_BOOL,
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GTK_ARG_READWRITE, ARG_LOOP_BASED);
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gtk_object_add_arg_type ("GstIdentity::sleep_time", GTK_TYPE_UINT,
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GTK_ARG_READWRITE, ARG_SLEEP_TIME);
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gtk_object_add_arg_type ("GstIdentity::silent", GTK_TYPE_BOOL,
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GTK_ARG_READWRITE, ARG_SILENT);
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gtkobject_class->set_arg = gst_identity_set_arg;
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gtkobject_class->get_arg = gst_identity_get_arg;
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}
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static GstBufferPool*
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gst_identity_get_bufferpool (GstPad *pad)
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{
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GstIdentity *identity;
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identity = GST_IDENTITY (gst_pad_get_parent (pad));
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return gst_pad_get_bufferpool (identity->srcpad);
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}
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static GstPadNegotiateReturn
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gst_identity_negotiate_src (GstPad *pad, GstCaps **caps, gpointer *data)
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{
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GstIdentity *identity;
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identity = GST_IDENTITY (gst_pad_get_parent (pad));
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return gst_pad_negotiate_proxy (pad, identity->sinkpad, caps);
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}
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static GstPadNegotiateReturn
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gst_identity_negotiate_sink (GstPad *pad, GstCaps **caps, gpointer *data)
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{
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GstIdentity *identity;
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identity = GST_IDENTITY (gst_pad_get_parent (pad));
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return gst_pad_negotiate_proxy (pad, identity->srcpad, caps);
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}
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static void
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gst_identity_init (GstIdentity *identity)
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{
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identity->sinkpad = gst_pad_new ("sink", GST_PAD_SINK);
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gst_element_add_pad (GST_ELEMENT (identity), identity->sinkpad);
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gst_pad_set_chain_function (identity->sinkpad, gst_identity_chain);
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gst_pad_set_bufferpool_function (identity->sinkpad, gst_identity_get_bufferpool);
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gst_pad_set_negotiate_function (identity->sinkpad, gst_identity_negotiate_sink);
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identity->srcpad = gst_pad_new ("src", GST_PAD_SRC);
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gst_element_add_pad (GST_ELEMENT (identity), identity->srcpad);
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gst_pad_set_negotiate_function (identity->srcpad, gst_identity_negotiate_src);
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identity->loop_based = FALSE;
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identity->sleep_time = 0;
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identity->silent = FALSE;
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}
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static void
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gst_identity_chain (GstPad *pad, GstBuffer *buf)
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{
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GstIdentity *identity;
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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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identity = GST_IDENTITY (gst_pad_get_parent (pad));
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if (!identity->silent)
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g_print("identity: ******* (%s:%s)i \n",GST_DEBUG_PAD_NAME(pad));
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gst_pad_push (identity->srcpad, buf);
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if (identity->sleep_time)
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usleep (identity->sleep_time);
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}
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static void
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gst_identity_loop (GstElement *element)
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{
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GstIdentity *identity;
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GstBuffer *buf;
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g_return_if_fail (element != NULL);
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g_return_if_fail (GST_IS_IDENTITY (element));
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identity = GST_IDENTITY (element);
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do {
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buf = gst_pad_pull (identity->sinkpad);
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if (!identity->silent)
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g_print("identity: ******* (%s:%s)i \n",GST_DEBUG_PAD_NAME(identity->sinkpad));
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gst_pad_push (identity->srcpad, buf);
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if (identity->sleep_time)
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usleep (identity->sleep_time);
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} while (!GST_ELEMENT_IS_COTHREAD_STOPPING(element));
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}
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static void
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gst_identity_set_arg (GtkObject *object, GtkArg *arg, guint id)
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{
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GstIdentity *identity;
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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_IDENTITY (object));
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identity = GST_IDENTITY (object);
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switch(id) {
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case ARG_LOOP_BASED:
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identity->loop_based = GTK_VALUE_BOOL (*arg);
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if (identity->loop_based) {
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gst_element_set_loop_function (GST_ELEMENT (identity), gst_identity_loop);
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gst_pad_set_chain_function (identity->sinkpad, NULL);
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}
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else {
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gst_pad_set_chain_function (identity->sinkpad, gst_identity_chain);
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gst_element_set_loop_function (GST_ELEMENT (identity), NULL);
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}
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break;
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case ARG_SLEEP_TIME:
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identity->sleep_time = GTK_VALUE_UINT (*arg);
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break;
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case ARG_SILENT:
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identity->silent = GTK_VALUE_BOOL (*arg);
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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 gst_identity_get_arg(GtkObject *object,GtkArg *arg,guint id) {
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GstIdentity *identity;
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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_IDENTITY (object));
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identity = GST_IDENTITY (object);
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switch (id) {
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case ARG_LOOP_BASED:
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GTK_VALUE_BOOL (*arg) = identity->loop_based;
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break;
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case ARG_SLEEP_TIME:
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GTK_VALUE_UINT (*arg) = identity->sleep_time;
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break;
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case ARG_SILENT:
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GTK_VALUE_BOOL (*arg) = identity->silent;
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break;
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default:
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arg->type = GTK_TYPE_INVALID;
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break;
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}
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}
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