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Original commit message from CVS: Remove threadsafe properties. Fix elements because GObject complains when installing a property before declaring a set/get_property handler. Rearrange gstelement.h file, use STATE macros for state locks. Free mutexes in the finalize method instead of dispose.
373 lines
10 KiB
C
373 lines
10 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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* gstshaper.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 <stdlib.h>
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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 "gstshaper.h"
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GST_DEBUG_CATEGORY_STATIC (gst_shaper_debug);
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#define GST_CAT_DEFAULT gst_shaper_debug
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GstElementDetails gst_shaper_details = GST_ELEMENT_DETAILS ("Shaper",
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"Generic",
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"Synchronizes streams on different pads",
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"Wim Taymans <wim.taymans@chello.be>");
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/* Shaper signals and args */
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enum
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{
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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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{
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ARG_0,
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ARG_POLICY,
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ARG_SILENT,
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ARG_LAST_MESSAGE
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};
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typedef struct
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{
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GstPad *sinkpad;
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GstPad *srcpad;
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GstBuffer *buffer;
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}
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GstShaperConnection;
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GstStaticPadTemplate shaper_src_template = GST_STATIC_PAD_TEMPLATE ("src%d",
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GST_PAD_SRC,
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GST_PAD_SOMETIMES,
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GST_STATIC_CAPS_ANY);
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GstStaticPadTemplate shaper_sink_template = GST_STATIC_PAD_TEMPLATE ("sink%d",
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GST_PAD_SINK,
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GST_PAD_REQUEST,
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GST_STATIC_CAPS_ANY);
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#define GST_TYPE_SHAPER_POLICY (gst_shaper_policy_get_type())
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static GType
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gst_shaper_policy_get_type (void)
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{
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static GType shaper_policy_type = 0;
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static GEnumValue shaper_policy[] = {
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{SHAPER_POLICY_TIMESTAMPS, "1", "sync on timestamps"},
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{SHAPER_POLICY_BUFFERSIZE, "2", "sync on buffer size"},
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{0, NULL, NULL},
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};
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if (!shaper_policy_type) {
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shaper_policy_type =
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g_enum_register_static ("GstShaperPolicy", shaper_policy);
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}
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return shaper_policy_type;
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}
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#define _do_init(bla) \
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GST_DEBUG_CATEGORY_INIT (gst_shaper_debug, "shaper", 0, "shaper element");
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GST_BOILERPLATE_FULL (GstShaper, gst_shaper, GstElement, GST_TYPE_ELEMENT,
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_do_init);
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static void gst_shaper_set_property (GObject * object, guint prop_id,
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const GValue * value, GParamSpec * pspec);
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static void gst_shaper_get_property (GObject * object, guint prop_id,
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GValue * value, GParamSpec * pspec);
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static GstPad *gst_shaper_request_new_pad (GstElement * element,
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GstPadTemplate * templ, const gchar * unused);
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static void gst_shaper_loop (GstElement * element);
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static void
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gst_shaper_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_shaper_details);
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gst_element_class_add_pad_template (gstelement_class,
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gst_static_pad_template_get (&shaper_src_template));
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gst_element_class_add_pad_template (gstelement_class,
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gst_static_pad_template_get (&shaper_sink_template));
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}
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static void
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gst_shaper_class_init (GstShaperClass * 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->set_property = GST_DEBUG_FUNCPTR (gst_shaper_set_property);
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gobject_class->get_property = GST_DEBUG_FUNCPTR (gst_shaper_get_property);
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g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_POLICY,
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g_param_spec_enum ("policy", "Policy", "Shaper policy",
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GST_TYPE_SHAPER_POLICY, SHAPER_POLICY_TIMESTAMPS, G_PARAM_READWRITE));
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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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gstelement_class->request_new_pad =
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GST_DEBUG_FUNCPTR (gst_shaper_request_new_pad);
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}
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static GstCaps *
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gst_shaper_getcaps (GstPad * pad)
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{
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GstPad *otherpad;
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GstShaperConnection *connection;
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connection = gst_pad_get_element_private (pad);
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otherpad =
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(pad == connection->srcpad ? connection->sinkpad : connection->srcpad);
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if (GST_PAD_PEER (otherpad)) {
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return gst_pad_get_caps (GST_PAD_PEER (otherpad));
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} else {
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return gst_caps_new_any ();
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}
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}
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static GList *
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gst_shaper_get_internal_link (GstPad * pad)
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{
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GList *res = NULL;
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GstShaperConnection *connection;
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GstPad *otherpad;
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connection = gst_pad_get_element_private (pad);
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otherpad =
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(pad == connection->srcpad ? connection->sinkpad : connection->srcpad);
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res = g_list_prepend (res, otherpad);
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return res;
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}
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static GstPadLinkReturn
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gst_shaper_link (GstPad * pad, const GstCaps * caps)
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{
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GstPad *otherpad;
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GstShaperConnection *connection;
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connection = gst_pad_get_element_private (pad);
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otherpad =
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(pad == connection->srcpad ? connection->sinkpad : connection->srcpad);
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return gst_pad_try_set_caps (otherpad, caps);
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}
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static GstShaperConnection *
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gst_shaper_create_connection (GstShaper * shaper)
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{
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GstShaperConnection *connection;
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gchar *padname;
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shaper->nconnections++;
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connection = g_new0 (GstShaperConnection, 1);
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padname = g_strdup_printf ("sink%d", shaper->nconnections);
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connection->sinkpad =
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gst_pad_new_from_template (gst_static_pad_template_get
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(&shaper_sink_template), padname);
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g_free (padname);
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gst_pad_set_getcaps_function (connection->sinkpad, gst_shaper_getcaps);
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gst_pad_set_internal_link_function (connection->sinkpad,
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gst_shaper_get_internal_link);
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gst_pad_set_link_function (connection->sinkpad, gst_shaper_link);
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gst_pad_set_element_private (connection->sinkpad, connection);
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gst_element_add_pad (GST_ELEMENT (shaper), connection->sinkpad);
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padname = g_strdup_printf ("src%d", shaper->nconnections);
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connection->srcpad =
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gst_pad_new_from_template (gst_static_pad_template_get
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(&shaper_src_template), padname);
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g_free (padname);
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gst_pad_set_getcaps_function (connection->srcpad, gst_shaper_getcaps);
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gst_pad_set_internal_link_function (connection->srcpad,
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gst_shaper_get_internal_link);
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gst_pad_set_link_function (connection->srcpad, gst_shaper_link);
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gst_pad_set_element_private (connection->srcpad, connection);
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gst_element_add_pad (GST_ELEMENT (shaper), connection->srcpad);
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shaper->connections = g_slist_prepend (shaper->connections, connection);
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return connection;
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}
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static GstPad *
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gst_shaper_request_new_pad (GstElement * element, GstPadTemplate * templ,
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const gchar * unused)
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{
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GstShaper *shaper = GST_SHAPER (element);
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GstShaperConnection *connection;
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connection = gst_shaper_create_connection (shaper);
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return connection->sinkpad;
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}
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static void
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gst_shaper_init (GstShaper * shaper)
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{
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gst_element_set_loop_function (GST_ELEMENT (shaper), gst_shaper_loop);
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shaper->policy = SHAPER_POLICY_TIMESTAMPS;
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shaper->connections = NULL;
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shaper->nconnections = 0;
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shaper->silent = FALSE;
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shaper->last_message = NULL;
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}
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static void
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gst_shaper_loop (GstElement * element)
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{
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GstShaper *shaper;
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GSList *connections;
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gboolean eos = TRUE;
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GstShaperConnection *min = NULL;
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shaper = GST_SHAPER (element);
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/* first make sure we have a buffer on all pads */
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connections = shaper->connections;
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while (connections) {
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GstShaperConnection *connection = (GstShaperConnection *) connections->data;
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/* try to fill a connection without a buffer on a pad that is
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* active */
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if (connection->buffer == NULL && GST_PAD_IS_USABLE (connection->sinkpad)) {
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GstBuffer *buffer;
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buffer = GST_BUFFER (gst_pad_pull (connection->sinkpad));
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/* events are simply pushed ASAP */
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if (GST_IS_EVENT (buffer)) {
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/* save event type as it will be unreffed after the next push */
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GstEventType type = GST_EVENT_TYPE (buffer);
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gst_pad_push (connection->srcpad, GST_DATA (buffer));
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switch (type) {
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/* on EOS we disable the pad so that we don't pull on
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* it again and never get more data */
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case GST_EVENT_EOS:
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gst_pad_set_active (connection->sinkpad, FALSE);
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break;
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default:
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break;
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}
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} else {
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/* we store the buffer */
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connection->buffer = buffer;
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}
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}
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/* FIXME policy stuff goes here */
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/* find connection with lowest timestamp */
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if (min == NULL || (connection->buffer != NULL &&
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(GST_BUFFER_TIMESTAMP (connection->buffer) <
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GST_BUFFER_TIMESTAMP (min->buffer)))) {
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min = connection;
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}
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connections = g_slist_next (connections);
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}
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/* if we have a connection with a buffer, push it */
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if (min != NULL && min->buffer) {
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gst_pad_push (min->srcpad, GST_DATA (min->buffer));
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min->buffer = NULL;
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/* since we pushed a buffer, it's not EOS */
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eos = FALSE;
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}
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if (eos) {
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gst_element_set_eos (element);
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}
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}
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static void
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gst_shaper_set_property (GObject * object, guint prop_id, const GValue * value,
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GParamSpec * pspec)
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{
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GstShaper *shaper;
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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_SHAPER (object));
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shaper = GST_SHAPER (object);
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switch (prop_id) {
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case ARG_POLICY:
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shaper->policy = g_value_get_enum (value);
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break;
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case ARG_SILENT:
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shaper->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_shaper_get_property (GObject * object, guint prop_id, GValue * value,
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GParamSpec * pspec)
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{
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GstShaper *shaper;
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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_SHAPER (object));
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shaper = GST_SHAPER (object);
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switch (prop_id) {
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case ARG_POLICY:
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g_value_set_enum (value, shaper->policy);
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break;
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case ARG_SILENT:
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g_value_set_boolean (value, shaper->silent);
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break;
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case ARG_LAST_MESSAGE:
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g_value_set_string (value, shaper->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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