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149b17079e
Original commit message from CVS: Fix some memleaks: * gst/autoplug/gstspider.c: (gst_spider_request_new_pad), (gst_spider_plug_from_srcpad): * gst/autoplug/gstspideridentity.c: (gst_spider_identity_link):
553 lines
17 KiB
C
553 lines
17 KiB
C
/* GStreamer
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* Copyright (C) 2002 Erik Walthinsen <omega@cse.ogi.edu>
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* 2002 Wim Taymans <wtay@chello.be>
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*
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* gstspideridentity.c: identity element for the spider autoplugger
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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 "gstspideridentity.h"
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#include "gstspider.h"
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GST_DEBUG_CATEGORY_STATIC (gst_spider_identity_debug);
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#define GST_CAT_DEFAULT gst_spider_identity_debug
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static GstElementDetails gst_spider_identity_details = GST_ELEMENT_DETAILS (
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"SpiderIdentity",
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"Generic",
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"Link between spider and outside elements",
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"Benjamin Otte <in7y118@public.uni-hamburg.de>"
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);
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/* generic templates
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* delete me when meging with spider.c
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*/
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static GstStaticPadTemplate spider_src_factory =
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GST_STATIC_PAD_TEMPLATE (
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"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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);
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static GstStaticPadTemplate spider_sink_factory =
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GST_STATIC_PAD_TEMPLATE (
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"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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);
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/* SpiderIdentity 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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/* FILL ME */
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};
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/* GObject stuff */
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static void gst_spider_identity_class_init (GstSpiderIdentityClass *klass);
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static void gst_spider_identity_init (GstSpiderIdentity *spider_identity);
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/* functions set in pads, elements and stuff */
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static void gst_spider_identity_chain (GstPad *pad, GstBuffer *buf);
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static GstElementStateReturn gst_spider_identity_change_state (GstElement *element);
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static GstPadLinkReturn gst_spider_identity_link (GstPad *pad, const GstCaps *caps);
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static GstCaps * gst_spider_identity_getcaps (GstPad *pad);
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/* loop functions */
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static void gst_spider_identity_dumb_loop (GstSpiderIdentity *ident);
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static void gst_spider_identity_src_loop (GstSpiderIdentity *ident);
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static void gst_spider_identity_sink_loop_type_finding (GstSpiderIdentity *ident);
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static gboolean gst_spider_identity_handle_src_event (GstPad *pad, GstEvent *event);
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/* other functions */
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static void gst_spider_identity_start_type_finding (GstSpiderIdentity *ident);
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static GstElementClass * parent_class = NULL;
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/* no signals
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static guint gst_spider_identity_signals[LAST_SIGNAL] = { 0 }; */
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GType
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gst_spider_identity_get_type (void)
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{
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static GType spider_identity_type = 0;
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if (!spider_identity_type) {
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static const GTypeInfo spider_identity_info = {
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sizeof(GstSpiderIdentityClass), NULL,
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NULL,
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(GClassInitFunc)gst_spider_identity_class_init,
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NULL,
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NULL,
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sizeof(GstSpiderIdentity),
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0,
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(GInstanceInitFunc)gst_spider_identity_init,
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};
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spider_identity_type = g_type_register_static (GST_TYPE_ELEMENT, "GstSpiderIdentity",
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&spider_identity_info, 0);
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GST_DEBUG_CATEGORY_INIT (gst_spider_identity_debug, "spideridentity",
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0, "spider autoplugging proxy element");
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}
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return spider_identity_type;
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}
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static void
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gst_spider_identity_class_init (GstSpiderIdentityClass *klass)
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{
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GstElementClass *gstelement_class = (GstElementClass *) klass;
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parent_class = g_type_class_ref (GST_TYPE_ELEMENT);
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/* add our two pad templates */
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gst_element_class_add_pad_template (gstelement_class,
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gst_static_pad_template_get (&spider_src_factory));
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gst_element_class_add_pad_template (gstelement_class,
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gst_static_pad_template_get (&spider_sink_factory));
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gst_element_class_set_details (gstelement_class, &gst_spider_identity_details);
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gstelement_class->change_state = GST_DEBUG_FUNCPTR(gst_spider_identity_change_state);
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gstelement_class->request_new_pad = GST_DEBUG_FUNCPTR(gst_spider_identity_request_new_pad);
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}
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static void
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gst_spider_identity_init (GstSpiderIdentity *ident)
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{
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/* sink */
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ident->sink = gst_pad_new_from_template (
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gst_static_pad_template_get (&spider_sink_factory), "sink");
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gst_element_add_pad (GST_ELEMENT (ident), ident->sink);
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gst_pad_set_link_function (ident->sink, GST_DEBUG_FUNCPTR (gst_spider_identity_link));
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gst_pad_set_getcaps_function (ident->sink, GST_DEBUG_FUNCPTR (gst_spider_identity_getcaps));
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/* src */
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ident->src = gst_pad_new_from_template (
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gst_static_pad_template_get (&spider_src_factory), "src");
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gst_element_add_pad (GST_ELEMENT (ident), ident->src);
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gst_pad_set_link_function (ident->src, GST_DEBUG_FUNCPTR (gst_spider_identity_link));
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gst_pad_set_getcaps_function (ident->src, GST_DEBUG_FUNCPTR (gst_spider_identity_getcaps));
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gst_pad_set_event_function (ident->src, GST_DEBUG_FUNCPTR (gst_spider_identity_handle_src_event));
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/* variables */
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ident->plugged = FALSE;
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}
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static void
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gst_spider_identity_chain (GstPad *pad, GstBuffer *buf)
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{
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GstSpiderIdentity *ident;
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/*g_print ("chaining on pad %s:%s with buffer %p\n", GST_DEBUG_PAD_NAME (pad), buf);*/
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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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if (buf == NULL) return;
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ident = GST_SPIDER_IDENTITY (gst_pad_get_parent (pad));
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if (GST_IS_EVENT (buf)) {
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/* start hack for current event stuff here */
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/* check for unlinked elements and send them the EOS event, too */
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if (GST_EVENT_TYPE (GST_EVENT (buf)) == GST_EVENT_EOS)
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{
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GstSpider *spider = (GstSpider *) GST_OBJECT_PARENT (ident);
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GList *list = spider->links;
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while (list)
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{
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GstSpiderConnection *conn = (GstSpiderConnection *) list->data;
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list = g_list_next (list);
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if (conn->current != (GstElement *) conn->src) {
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GST_DEBUG ("sending EOS to unconnected element %s from %s",
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GST_ELEMENT_NAME (conn->src), GST_ELEMENT_NAME (ident));
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gst_pad_push (conn->src->src, GST_DATA (GST_BUFFER (gst_event_new (GST_EVENT_EOS))));
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gst_element_set_eos (GST_ELEMENT (conn->src));
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}
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}
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}
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/* end hack for current event stuff here */
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gst_pad_event_default (pad, GST_EVENT (buf));
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return;
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}
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if ((ident->src != NULL) && (GST_PAD_PEER (ident->src) != NULL)) {
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/* g_print("pushing buffer %p (refcount %d - buffersize %d) to pad %s:%s\n", buf, GST_BUFFER_REFCOUNT (buf), GST_BUFFER_SIZE (buf), GST_DEBUG_PAD_NAME (ident->src)); */
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GST_LOG ( "push %p %" G_GINT64_FORMAT, buf, GST_BUFFER_OFFSET (buf));
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gst_pad_push (ident->src, GST_DATA (buf));
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} else if (GST_IS_BUFFER (buf)) {
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gst_buffer_unref (buf);
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}
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}
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GstSpiderIdentity*
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gst_spider_identity_new_src (gchar *name)
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{
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GstSpiderIdentity *ret = (GstSpiderIdentity *) gst_element_factory_make ("spideridentity", name);
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/* set the right functions */
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gst_element_set_loop_function (GST_ELEMENT (ret), (GstElementLoopFunction) GST_DEBUG_FUNCPTR (gst_spider_identity_src_loop));
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return ret;
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}
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GstSpiderIdentity*
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gst_spider_identity_new_sink (gchar *name)
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{
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GstSpiderIdentity *ret = (GstSpiderIdentity *) gst_element_factory_make ("spideridentity", name);
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/* set the right functions */
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gst_element_set_loop_function (GST_ELEMENT (ret), (GstElementLoopFunction) GST_DEBUG_FUNCPTR (gst_spider_identity_dumb_loop));
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return ret;
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}
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/* shamelessly stolen from gstqueue.c to get proxy links */
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static GstPadLinkReturn
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gst_spider_identity_link (GstPad *pad, const GstCaps *caps)
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{
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GstSpiderIdentity *spider_identity = GST_SPIDER_IDENTITY (gst_pad_get_parent (pad));
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GstPad *otherpad;
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if (pad == spider_identity->src)
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otherpad = spider_identity->sink;
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else
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otherpad = spider_identity->src;
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g_return_val_if_fail (otherpad != NULL, GST_PAD_LINK_REFUSED);
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if (GST_PAD_PEER (otherpad) == NULL)
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return GST_PAD_LINK_DELAYED;
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return gst_pad_try_set_caps (otherpad, caps);
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}
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static GstCaps*
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gst_spider_identity_getcaps (GstPad *pad)
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{
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GstSpiderIdentity *ident = GST_SPIDER_IDENTITY (gst_pad_get_parent (pad));
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GstPad *otherpad;
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if (pad == ident->src)
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otherpad = ident->sink;
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else
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otherpad = ident->src;
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if (otherpad != NULL) {
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if (GST_PAD_PEER (otherpad)) {
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GstCaps *ret = gst_pad_get_allowed_caps (otherpad);
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if (ident->caps) {
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GstCaps *ret2 = gst_caps_intersect (ident->caps, ret);
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gst_caps_free (ret);
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ret = ret2;
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}
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return ret;
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}
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}
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if (ident->caps)
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return gst_caps_copy (ident->caps);
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return gst_caps_new_any ();
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}
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GstPad*
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gst_spider_identity_request_new_pad (GstElement *element, GstPadTemplate *templ, const gchar *name)
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{
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GstSpiderIdentity *ident;
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/*checks */
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g_return_val_if_fail (templ != NULL, NULL);
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g_return_val_if_fail (GST_IS_PAD_TEMPLATE (templ), NULL);
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ident = GST_SPIDER_IDENTITY (element);
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g_return_val_if_fail (ident != NULL, NULL);
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g_return_val_if_fail (GST_IS_SPIDER_IDENTITY (ident), NULL);
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switch (GST_PAD_TEMPLATE_DIRECTION (templ))
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{
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case GST_PAD_SINK:
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if (ident->sink != NULL) break;
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/* sink */
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GST_DEBUG ( "element %s requests new sink pad", GST_ELEMENT_NAME(ident));
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ident->sink = gst_pad_new ("sink", GST_PAD_SINK);
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gst_element_add_pad (GST_ELEMENT (ident), ident->sink);
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gst_pad_set_link_function (ident->sink, GST_DEBUG_FUNCPTR (gst_spider_identity_link));
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gst_pad_set_getcaps_function (ident->sink, GST_DEBUG_FUNCPTR (gst_spider_identity_getcaps));
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return ident->sink;
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case GST_PAD_SRC:
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/* src */
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if (ident->src != NULL) break;
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GST_DEBUG ( "element %s requests new src pad", GST_ELEMENT_NAME(ident));
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ident->src = gst_pad_new ("src", GST_PAD_SRC);
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gst_element_add_pad (GST_ELEMENT (ident), ident->src);
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gst_pad_set_link_function (ident->src, GST_DEBUG_FUNCPTR (gst_spider_identity_link));
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gst_pad_set_getcaps_function (ident->src, GST_DEBUG_FUNCPTR (gst_spider_identity_getcaps));
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gst_pad_set_event_function (ident->src, GST_DEBUG_FUNCPTR (gst_spider_identity_handle_src_event));
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return ident->src;
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default:
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break;
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}
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GST_DEBUG ( "element %s requested a new pad but none could be created", GST_ELEMENT_NAME(ident));
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return NULL;
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}
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/* this function has to
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* - start the autoplugger
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* - start type finding
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* ...
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*/
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static GstElementStateReturn
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gst_spider_identity_change_state (GstElement *element)
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{
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GstSpiderIdentity *ident;
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GstSpider *spider;
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GstElementStateReturn ret = GST_STATE_SUCCESS;
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/* element check */
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ident = GST_SPIDER_IDENTITY (element);
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g_return_val_if_fail (ident != NULL, GST_STATE_FAILURE);
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g_return_val_if_fail (GST_IS_SPIDER_IDENTITY (ident), GST_STATE_FAILURE);
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switch (GST_STATE_TRANSITION (element)) {
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case GST_STATE_PAUSED_TO_READY:
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gst_caps_replace (&ident->caps, NULL);
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break;
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case GST_STATE_PAUSED_TO_PLAYING:
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/* autoplugger check */
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spider = GST_SPIDER (GST_ELEMENT_PARENT (ident));
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g_return_val_if_fail (spider != NULL, GST_STATE_FAILURE);
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g_return_val_if_fail (GST_IS_SPIDER (spider), GST_STATE_FAILURE);
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/* start typefinding or plugging */
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if ((GST_RPAD_PEER (ident->sink) != NULL) && (GST_RPAD_PEER (ident->src) == NULL))
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{
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GstCaps *caps = gst_pad_get_caps ((GstPad *) GST_PAD_PEER (ident->sink));
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if (gst_caps_is_any (caps) || gst_caps_is_empty (caps))
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{
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gst_spider_identity_start_type_finding (ident);
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gst_caps_free (caps);
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break;
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} else {
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gst_spider_identity_plug (ident);
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}
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gst_caps_free (caps);
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}
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/* autoplug on src */
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if ((GST_RPAD_PEER (ident->src) != NULL) && (GST_RPAD_PEER (ident->sink) == NULL))
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{
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gst_spider_identity_plug (ident);
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}
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default:
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break;
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}
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if ((ret != GST_STATE_FAILURE) && (GST_ELEMENT_CLASS (parent_class)->change_state))
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ret = GST_ELEMENT_CLASS (parent_class)->change_state (element);
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return ret;
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}
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static void
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gst_spider_identity_start_type_finding (GstSpiderIdentity *ident)
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{
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/* GstElement* typefind;
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gchar *name;*/
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gboolean restart = FALSE;
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GST_DEBUG ("element %s starts typefinding", GST_ELEMENT_NAME(ident));
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if (GST_STATE (GST_ELEMENT_PARENT (ident)) == GST_STATE_PLAYING)
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{
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gst_element_set_state (GST_ELEMENT (GST_ELEMENT_PARENT (ident)), GST_STATE_PAUSED);
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restart = TRUE;
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}
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gst_element_set_loop_function (GST_ELEMENT (ident), (GstElementLoopFunction) GST_DEBUG_FUNCPTR (gst_spider_identity_sink_loop_type_finding));
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if (restart)
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{
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gst_element_set_state (GST_ELEMENT (GST_ELEMENT_PARENT (ident)), GST_STATE_PLAYING);
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}
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}
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/* since we can't set the loop function to NULL if there's a cothread for us,
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* we have to use a dumb one
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*/
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static void
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gst_spider_identity_dumb_loop (GstSpiderIdentity *ident)
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{
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GstBuffer *buf;
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g_return_if_fail (ident != NULL);
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g_return_if_fail (GST_IS_SPIDER_IDENTITY (ident));
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g_assert (ident->sink != NULL);
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buf = GST_BUFFER (gst_pad_pull (ident->sink));
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gst_spider_identity_chain (ident->sink, buf);
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}
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/* do nothing until we're linked - then disable yourself
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*/
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static void
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gst_spider_identity_src_loop (GstSpiderIdentity *ident)
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{
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/* checks - disable for speed */
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g_return_if_fail (ident != NULL);
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g_return_if_fail (GST_IS_SPIDER_IDENTITY (ident));
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/* we don't want a loop function if we're plugged */
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if (ident->sink && GST_PAD_PEER (ident->sink))
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{
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gst_element_set_loop_function (GST_ELEMENT (ident), (GstElementLoopFunction) GST_DEBUG_FUNCPTR (gst_spider_identity_dumb_loop));
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gst_spider_identity_dumb_loop (ident);
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return;
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}
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gst_element_interrupt (GST_ELEMENT (ident));
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}
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/* This loop function is only needed when typefinding.
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*/
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typedef struct {
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GstBuffer *buffer;
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guint best_probability;
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GstCaps *caps;
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} SpiderTypeFind;
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guint8 *
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spider_find_peek (gpointer data, gint64 offset, guint size)
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{
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SpiderTypeFind *find = (SpiderTypeFind *) data;
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gint64 buffer_offset = GST_BUFFER_OFFSET_IS_VALID (find->buffer) ?
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GST_BUFFER_OFFSET (find->buffer) : 0;
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if (offset >= buffer_offset && offset + size <= buffer_offset + GST_BUFFER_SIZE (find->buffer)) {
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GST_LOG ("peek %"G_GINT64_FORMAT", %u successful", offset, size);
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return GST_BUFFER_DATA (find->buffer) + offset - buffer_offset;
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} else {
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|
GST_LOG ("peek %"G_GINT64_FORMAT", %u failed", offset, size);
|
|
return NULL;
|
|
}
|
|
}
|
|
static void
|
|
spider_find_suggest (gpointer data, guint probability, const GstCaps *caps)
|
|
{
|
|
SpiderTypeFind *find = (SpiderTypeFind *) data;
|
|
|
|
GST_INFO ("suggest %u, %" GST_PTR_FORMAT, probability, caps);
|
|
if (probability > find->best_probability) {
|
|
gst_caps_replace (&find->caps, gst_caps_copy (caps));
|
|
find->best_probability = probability;
|
|
}
|
|
}
|
|
static void
|
|
gst_spider_identity_sink_loop_type_finding (GstSpiderIdentity *ident)
|
|
{
|
|
GstData *data;
|
|
GstTypeFind gst_find;
|
|
SpiderTypeFind find;
|
|
GList *walk, *type_list = NULL;
|
|
|
|
g_return_if_fail (GST_IS_SPIDER_IDENTITY (ident));
|
|
|
|
data = gst_pad_pull (ident->sink);
|
|
if (!GST_IS_BUFFER (data)) {
|
|
gst_spider_identity_chain (ident->sink, GST_BUFFER (data));
|
|
return;
|
|
}
|
|
|
|
find.buffer = GST_BUFFER (data);
|
|
/* maybe there are already valid caps now? */
|
|
find.caps = gst_pad_get_allowed_caps (ident->sink);
|
|
if (!gst_caps_is_empty (find.caps) && !gst_caps_is_any (find.caps)) {
|
|
goto plug;
|
|
} else {
|
|
gst_caps_free (find.caps);
|
|
find.caps = NULL;
|
|
}
|
|
|
|
/* now do the actual typefinding with the supplied buffer */
|
|
walk = type_list = gst_type_find_factory_get_list ();
|
|
|
|
find.best_probability = 0;
|
|
find.caps = NULL;
|
|
gst_find.data = &find;
|
|
gst_find.peek = spider_find_peek;
|
|
gst_find.suggest = spider_find_suggest;
|
|
while (walk) {
|
|
GstTypeFindFactory *factory = GST_TYPE_FIND_FACTORY (walk->data);
|
|
|
|
GST_DEBUG ("trying typefind function %s", GST_PLUGIN_FEATURE_NAME (factory));
|
|
gst_type_find_factory_call_function (factory, &gst_find);
|
|
if (find.best_probability >= GST_TYPE_FIND_MAXIMUM)
|
|
goto plug;
|
|
walk = g_list_next (walk);
|
|
}
|
|
if (find.best_probability > 0)
|
|
goto plug;
|
|
GST_ELEMENT_ERROR (ident, STREAM, TYPE_NOT_FOUND, (NULL), (NULL));
|
|
find.buffer = GST_BUFFER (gst_event_new (GST_EVENT_EOS));
|
|
|
|
end:
|
|
/* remove loop function */
|
|
gst_element_set_loop_function (GST_ELEMENT (ident),
|
|
(GstElementLoopFunction) GST_DEBUG_FUNCPTR (gst_spider_identity_dumb_loop));
|
|
|
|
/* push the buffer */
|
|
gst_spider_identity_chain (ident->sink, find.buffer);
|
|
|
|
return;
|
|
|
|
plug:
|
|
GST_INFO ("typefind function found caps");
|
|
ident->caps = find.caps;
|
|
if (GST_PAD_IS_LINKED (ident->src)) {
|
|
GstPadLinkReturn ret;
|
|
|
|
ret = gst_pad_try_set_caps (ident->src, find.caps);
|
|
if (GST_PAD_LINK_FAILED (ret)){
|
|
g_critical("could not set caps on spideridentity src pad\n");
|
|
}
|
|
}
|
|
GST_LOG_OBJECT (ident, "spider starting caps: %" GST_PTR_FORMAT, find.caps);
|
|
if (type_list)
|
|
g_list_free (type_list);
|
|
|
|
gst_spider_identity_plug (ident);
|
|
|
|
goto end;
|
|
}
|
|
|
|
static gboolean
|
|
gst_spider_identity_handle_src_event (GstPad *pad, GstEvent *event)
|
|
{
|
|
gboolean res = TRUE;
|
|
GstSpiderIdentity *ident;
|
|
|
|
GST_DEBUG ( "spider_identity src_event");
|
|
|
|
ident = GST_SPIDER_IDENTITY (gst_pad_get_parent (pad));
|
|
|
|
switch (GST_EVENT_TYPE (event)) {
|
|
case GST_EVENT_FLUSH:
|
|
case GST_EVENT_SEEK:
|
|
default:
|
|
res = gst_pad_event_default (pad, event);
|
|
break;
|
|
}
|
|
|
|
return res;
|
|
}
|