mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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2ecb08f2bd
Original commit message from CVS: Negotiation fixes
310 lines
8.5 KiB
C
310 lines
8.5 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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* 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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GST_DEBUG_CATEGORY_STATIC (gst_tee_debug);
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#define GST_CAT_DEFAULT gst_tee_debug
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GstElementDetails gst_tee_details = GST_ELEMENT_DETAILS (
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"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 Taymans <wim.taymans@chello.be>"
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);
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/* Tee 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_SILENT,
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ARG_NUM_PADS,
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ARG_LAST_MESSAGE,
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/* FILL ME */
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};
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GstStaticPadTemplate tee_src_template = GST_STATIC_PAD_TEMPLATE (
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"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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);
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static void gst_tee_base_init (gpointer g_class);
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static void gst_tee_class_init (GstTeeClass *klass);
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static void gst_tee_init (GstTee *tee);
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static GstPad* gst_tee_request_new_pad (GstElement *element, GstPadTemplate *temp, const gchar *unused);
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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 void gst_tee_chain (GstPad *pad, GstData *_data);
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static GstElementClass *parent_class = NULL;
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/*static guint gst_tee_signals[LAST_SIGNAL] = { 0 };*/
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GType
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gst_tee_get_type(void) {
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static GType tee_type = 0;
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if (!tee_type) {
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static const GTypeInfo tee_info = {
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sizeof(GstTeeClass),
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gst_tee_base_init,
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NULL,
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(GClassInitFunc)gst_tee_class_init,
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NULL,
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NULL,
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sizeof(GstTee),
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0,
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(GInstanceInitFunc)gst_tee_init,
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};
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tee_type = g_type_register_static (GST_TYPE_ELEMENT, "GstTee", &tee_info, 0);
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GST_DEBUG_CATEGORY_INIT (gst_tee_debug, "tee", 0, "tee element");
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}
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return tee_type;
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}
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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_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_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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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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g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_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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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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gstelement_class->request_new_pad = 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)
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{
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tee->sinkpad = gst_pad_new ("sink", GST_PAD_SINK);
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gst_element_add_pad (GST_ELEMENT (tee), tee->sinkpad);
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gst_pad_set_chain_function (tee->sinkpad, GST_DEBUG_FUNCPTR (gst_tee_chain));
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gst_pad_set_link_function (tee->sinkpad, GST_DEBUG_FUNCPTR (gst_pad_proxy_pad_link));
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gst_pad_set_getcaps_function (tee->sinkpad, GST_DEBUG_FUNCPTR (gst_pad_proxy_getcaps));
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gst_pad_set_fixate_function (tee->sinkpad, GST_DEBUG_FUNCPTR (gst_pad_proxy_fixate));
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tee->silent = FALSE;
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tee->last_message = NULL;
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}
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/* helper compare function */
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gint name_pad_compare (gconstpointer a, gconstpointer b)
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{
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GstPad* pad = (GstPad*) a;
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gchar *name = (gchar *) b;
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g_assert (GST_IS_PAD (pad));
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return strcmp (name, gst_pad_get_name (pad)); /* returns 0 if match */
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}
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static GstPad*
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gst_tee_request_new_pad (GstElement *element, GstPadTemplate *templ, 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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gint i = 0;
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const GList *pads;
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g_return_val_if_fail (GST_IS_TEE (element), NULL);
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if (templ->direction != GST_PAD_SRC) {
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g_warning ("gsttee: request new pad that is not a SRC pad\n");
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return NULL;
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}
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tee = GST_TEE (element);
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/* try names in order and find one that's not in use atm */
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pads = gst_element_get_pad_list (element);
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name = NULL;
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while (!name)
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{
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name = g_strdup_printf ("src%d", i);
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if (g_list_find_custom ((GList *)pads, (gconstpointer) name, name_pad_compare) != NULL)
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{
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/* this name is taken, use the next one */
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++i;
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g_free (name);
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name = NULL;
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}
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}
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if (!tee->silent) {
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g_free (tee->last_message);
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tee->last_message = g_strdup_printf ("new pad %s", name);
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g_object_notify (G_OBJECT (tee), "last_message");
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}
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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_link_function (srcpad, GST_DEBUG_FUNCPTR (gst_pad_proxy_pad_link));
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gst_pad_set_getcaps_function (srcpad, GST_DEBUG_FUNCPTR (gst_pad_proxy_getcaps));
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gst_pad_set_fixate_function (srcpad, GST_DEBUG_FUNCPTR (gst_pad_proxy_fixate));
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gst_element_add_pad (GST_ELEMENT (tee), srcpad);
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GST_PAD_ELEMENT_PRIVATE (srcpad) = NULL;
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if (GST_PAD_CAPS (tee->sinkpad)) {
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gst_pad_try_set_caps (srcpad, GST_PAD_CAPS (tee->sinkpad));
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}
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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, GParamSpec *pspec)
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{
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GstTee *tee;
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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_TEE (object));
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tee = GST_TEE (object);
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switch (prop_id) {
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case ARG_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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}
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static void
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gst_tee_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec)
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{
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GstTee *tee;
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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_TEE (object));
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tee = GST_TEE (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, GST_ELEMENT (tee)->numsrcpads);
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break;
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case ARG_SILENT:
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g_value_set_boolean (value, tee->silent);
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break;
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case ARG_LAST_MESSAGE:
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g_value_set_string ((GValue *) 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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}
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/**
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* gst_tee_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_tee_chain (GstPad *pad, GstData *_data)
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{
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GstBuffer *buf = GST_BUFFER (_data);
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GstTee *tee;
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const GList *pads;
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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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tee = GST_TEE (gst_pad_get_parent (pad));
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gst_buffer_ref_by_count (buf, GST_ELEMENT (tee)->numsrcpads - 1);
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pads = gst_element_get_pad_list (GST_ELEMENT (tee));
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while (pads) {
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GstPad *outpad = GST_PAD (pads->data);
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pads = g_list_next (pads);
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if (GST_PAD_DIRECTION (outpad) != GST_PAD_SRC)
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continue;
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if (!tee->silent) {
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g_free (tee->last_message);
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tee->last_message = g_strdup_printf ("chain ******* (%s:%s)t (%d bytes, %"
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G_GUINT64_FORMAT ") %p",
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GST_DEBUG_PAD_NAME (outpad), 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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if (GST_PAD_IS_USABLE (outpad))
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gst_pad_push (outpad, GST_DATA (buf));
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else
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gst_buffer_unref (buf);
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}
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}
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