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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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There's not much point in using GST_DEBUG_FUNCPTR with GObject virtual functions such as get_property, set_propery, finalize and dispose, since they'll never be used by anyone anyway. Saves a few bytes and possibly a tenth of a polar bear.
935 lines
26 KiB
C
935 lines
26 KiB
C
/* GStreamer
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* Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
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* 2000,2001,2002,2003,2004,2005 Wim Taymans <wim@fluendo.com>
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* 2007 Wim Taymans <wim.taymans@gmail.com>
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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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/**
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* SECTION:element-tee
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* @see_also: #GstIdentity
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*
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* Split data to multiple pads.
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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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static GstStaticPadTemplate sinktemplate = GST_STATIC_PAD_TEMPLATE ("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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GST_DEBUG_CATEGORY_STATIC (gst_tee_debug);
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#define GST_CAT_DEFAULT gst_tee_debug
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#define GST_TYPE_TEE_PULL_MODE (gst_tee_pull_mode_get_type())
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static GType
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gst_tee_pull_mode_get_type (void)
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{
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static GType type = 0;
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static const GEnumValue data[] = {
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{GST_TEE_PULL_MODE_NEVER, "Never activate in pull mode", "never"},
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{GST_TEE_PULL_MODE_SINGLE, "Only one src pad can be active in pull mode",
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"single"},
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{0, NULL, NULL},
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};
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if (!type) {
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type = g_enum_register_static ("GstTeePullMode", data);
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}
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return type;
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}
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/* lock to protect request pads from being removed while downstream */
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#define GST_TEE_DYN_LOCK(tee) g_mutex_lock ((tee)->dyn_lock)
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#define GST_TEE_DYN_UNLOCK(tee) g_mutex_unlock ((tee)->dyn_lock)
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#define DEFAULT_PROP_NUM_SRC_PADS 0
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#define DEFAULT_PROP_HAS_SINK_LOOP FALSE
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#define DEFAULT_PROP_HAS_CHAIN TRUE
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#define DEFAULT_PROP_SILENT TRUE
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#define DEFAULT_PROP_LAST_MESSAGE NULL
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#define DEFAULT_PULL_MODE GST_TEE_PULL_MODE_NEVER
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enum
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{
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PROP_0,
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PROP_NUM_SRC_PADS,
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PROP_HAS_SINK_LOOP,
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PROP_HAS_CHAIN,
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PROP_SILENT,
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PROP_LAST_MESSAGE,
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PROP_PULL_MODE,
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PROP_ALLOC_PAD,
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};
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static GstStaticPadTemplate tee_src_template = GST_STATIC_PAD_TEMPLATE ("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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#define _do_init(bla) \
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GST_DEBUG_CATEGORY_INIT (gst_tee_debug, "tee", 0, "tee element");
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GST_BOILERPLATE_FULL (GstTee, gst_tee, GstElement, GST_TYPE_ELEMENT, _do_init);
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/* structure and quark to keep track of which pads have been pushed */
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static GQuark push_data;
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typedef struct
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{
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gboolean pushed;
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GstFlowReturn result;
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gboolean removed;
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} PushData;
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static GstPad *gst_tee_request_new_pad (GstElement * element,
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GstPadTemplate * temp, const gchar * unused);
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static void gst_tee_release_pad (GstElement * element, GstPad * pad);
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static void gst_tee_finalize (GObject * object);
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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 GstFlowReturn gst_tee_chain (GstPad * pad, GstBuffer * buffer);
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static GstFlowReturn gst_tee_chain_list (GstPad * pad, GstBufferList * list);
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static GstFlowReturn gst_tee_buffer_alloc (GstPad * pad, guint64 offset,
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guint size, GstCaps * caps, GstBuffer ** buf);
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static gboolean gst_tee_sink_acceptcaps (GstPad * pad, GstCaps * caps);
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static gboolean gst_tee_sink_activate_push (GstPad * pad, gboolean active);
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static gboolean gst_tee_src_check_get_range (GstPad * pad);
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static gboolean gst_tee_src_activate_pull (GstPad * pad, gboolean active);
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static GstFlowReturn gst_tee_src_get_range (GstPad * pad, guint64 offset,
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guint length, GstBuffer ** buf);
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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_simple (gstelement_class,
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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>, " "Wim Taymans <wim@fluendo.com>");
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gst_element_class_add_pad_template (gstelement_class,
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gst_static_pad_template_get (&sinktemplate));
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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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push_data = g_quark_from_static_string ("tee-push-data");
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}
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static void
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gst_tee_finalize (GObject * object)
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{
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GstTee *tee;
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tee = GST_TEE (object);
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g_free (tee->last_message);
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g_mutex_free (tee->dyn_lock);
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G_OBJECT_CLASS (parent_class)->finalize (object);
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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 = G_OBJECT_CLASS (klass);
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gstelement_class = GST_ELEMENT_CLASS (klass);
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gobject_class->finalize = gst_tee_finalize;
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gobject_class->set_property = gst_tee_set_property;
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gobject_class->get_property = gst_tee_get_property;
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g_object_class_install_property (gobject_class, PROP_NUM_SRC_PADS,
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g_param_spec_int ("num-src-pads", "Num Src Pads",
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"The number of source pads", 0, G_MAXINT, DEFAULT_PROP_NUM_SRC_PADS,
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G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
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g_object_class_install_property (gobject_class, PROP_HAS_SINK_LOOP,
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g_param_spec_boolean ("has-sink-loop", "Has Sink Loop",
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"If the element should spawn a thread (unimplemented and deprecated)",
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DEFAULT_PROP_HAS_SINK_LOOP,
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G_PARAM_CONSTRUCT | G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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g_object_class_install_property (gobject_class, PROP_HAS_CHAIN,
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g_param_spec_boolean ("has-chain", "Has Chain",
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"If the element can operate in push mode", DEFAULT_PROP_HAS_CHAIN,
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G_PARAM_CONSTRUCT | G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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g_object_class_install_property (gobject_class, PROP_SILENT,
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g_param_spec_boolean ("silent", "Silent",
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"Don't produce last_message events", DEFAULT_PROP_SILENT,
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G_PARAM_CONSTRUCT | G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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g_object_class_install_property (gobject_class, PROP_LAST_MESSAGE,
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g_param_spec_string ("last-message", "Last Message",
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"The message describing current status", DEFAULT_PROP_LAST_MESSAGE,
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G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
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g_object_class_install_property (gobject_class, PROP_PULL_MODE,
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g_param_spec_enum ("pull-mode", "Pull mode",
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"Behavior of tee in pull mode", GST_TYPE_TEE_PULL_MODE,
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DEFAULT_PULL_MODE,
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G_PARAM_CONSTRUCT | G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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g_object_class_install_property (gobject_class, PROP_ALLOC_PAD,
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g_param_spec_object ("alloc-pad", "Allocation Src Pad",
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"The pad used for gst_pad_alloc_buffer", GST_TYPE_PAD,
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G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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gstelement_class->request_new_pad =
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GST_DEBUG_FUNCPTR (gst_tee_request_new_pad);
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gstelement_class->release_pad = GST_DEBUG_FUNCPTR (gst_tee_release_pad);
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}
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static void
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gst_tee_init (GstTee * tee, GstTeeClass * g_class)
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{
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tee->dyn_lock = g_mutex_new ();
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tee->sinkpad = gst_pad_new_from_static_template (&sinktemplate, "sink");
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tee->sink_mode = GST_ACTIVATE_NONE;
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gst_pad_set_setcaps_function (tee->sinkpad,
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GST_DEBUG_FUNCPTR (gst_pad_proxy_setcaps));
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gst_pad_set_getcaps_function (tee->sinkpad,
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GST_DEBUG_FUNCPTR (gst_pad_proxy_getcaps));
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gst_pad_set_acceptcaps_function (tee->sinkpad,
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GST_DEBUG_FUNCPTR (gst_tee_sink_acceptcaps));
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gst_pad_set_bufferalloc_function (tee->sinkpad,
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GST_DEBUG_FUNCPTR (gst_tee_buffer_alloc));
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gst_pad_set_activatepush_function (tee->sinkpad,
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GST_DEBUG_FUNCPTR (gst_tee_sink_activate_push));
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gst_pad_set_chain_function (tee->sinkpad, GST_DEBUG_FUNCPTR (gst_tee_chain));
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gst_pad_set_chain_list_function (tee->sinkpad,
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GST_DEBUG_FUNCPTR (gst_tee_chain_list));
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gst_element_add_pad (GST_ELEMENT (tee), tee->sinkpad);
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tee->last_message = NULL;
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}
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static GstPad *
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gst_tee_request_new_pad (GstElement * element, GstPadTemplate * templ,
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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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GstActivateMode mode;
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gboolean res;
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PushData *data;
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tee = GST_TEE (element);
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GST_DEBUG_OBJECT (tee, "requesting pad");
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GST_OBJECT_LOCK (tee);
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name = g_strdup_printf ("src%d", tee->pad_counter++);
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srcpad = gst_pad_new_from_template (templ, name);
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g_free (name);
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mode = tee->sink_mode;
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/* install the data, we automatically free it when the pad is disposed because
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* of _release_pad or when the element goes away. */
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data = g_new0 (PushData, 1);
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data->pushed = FALSE;
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data->result = GST_FLOW_NOT_LINKED;
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data->removed = FALSE;
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g_object_set_qdata_full (G_OBJECT (srcpad), push_data, data, g_free);
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GST_OBJECT_UNLOCK (tee);
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switch (mode) {
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case GST_ACTIVATE_PULL:
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/* we already have a src pad in pull mode, and our pull mode can only be
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SINGLE, so fall through to activate this new pad in push mode */
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case GST_ACTIVATE_PUSH:
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res = gst_pad_activate_push (srcpad, TRUE);
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break;
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default:
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res = TRUE;
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break;
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}
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if (!res)
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goto activate_failed;
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gst_pad_set_setcaps_function (srcpad,
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GST_DEBUG_FUNCPTR (gst_pad_proxy_setcaps));
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gst_pad_set_getcaps_function (srcpad,
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GST_DEBUG_FUNCPTR (gst_pad_proxy_getcaps));
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gst_pad_set_activatepull_function (srcpad,
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GST_DEBUG_FUNCPTR (gst_tee_src_activate_pull));
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gst_pad_set_checkgetrange_function (srcpad,
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GST_DEBUG_FUNCPTR (gst_tee_src_check_get_range));
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gst_pad_set_getrange_function (srcpad,
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GST_DEBUG_FUNCPTR (gst_tee_src_get_range));
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gst_element_add_pad (GST_ELEMENT_CAST (tee), srcpad);
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return srcpad;
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/* ERRORS */
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activate_failed:
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{
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GST_OBJECT_LOCK (tee);
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GST_DEBUG_OBJECT (tee, "warning failed to activate request pad");
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if (tee->allocpad == srcpad)
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tee->allocpad = NULL;
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gst_object_unref (srcpad);
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GST_OBJECT_UNLOCK (tee);
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g_object_notify (G_OBJECT (tee), "alloc-pad");
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return NULL;
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}
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}
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static void
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gst_tee_release_pad (GstElement * element, GstPad * pad)
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{
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GstTee *tee;
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PushData *data;
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tee = GST_TEE (element);
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GST_DEBUG_OBJECT (tee, "releasing pad");
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GST_OBJECT_LOCK (tee);
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if (tee->allocpad == pad)
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tee->allocpad = NULL;
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GST_OBJECT_UNLOCK (tee);
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g_object_notify (G_OBJECT (tee), "alloc-pad");
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/* wait for pending pad_alloc to finish */
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GST_TEE_DYN_LOCK (tee);
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/* mark the pad as removed so that future pad_alloc fails with NOT_LINKED. */
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data = g_object_get_qdata (G_OBJECT (pad), push_data);
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data->removed = TRUE;
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gst_pad_set_active (pad, FALSE);
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gst_element_remove_pad (GST_ELEMENT_CAST (tee), pad);
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GST_TEE_DYN_UNLOCK (tee);
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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,
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GParamSpec * pspec)
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{
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GstTee *tee = GST_TEE (object);
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GST_OBJECT_LOCK (tee);
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switch (prop_id) {
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case PROP_HAS_SINK_LOOP:
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tee->has_sink_loop = g_value_get_boolean (value);
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if (tee->has_sink_loop) {
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g_warning ("tee will never implement has-sink-loop==TRUE");
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}
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break;
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case PROP_HAS_CHAIN:
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tee->has_chain = g_value_get_boolean (value);
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break;
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case PROP_SILENT:
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tee->silent = g_value_get_boolean (value);
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break;
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case PROP_PULL_MODE:
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tee->pull_mode = g_value_get_enum (value);
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break;
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case PROP_ALLOC_PAD:
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{
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GstPad *pad = g_value_get_object (value);
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GST_OBJECT_LOCK (pad);
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if (GST_OBJECT_PARENT (pad) == GST_OBJECT_CAST (object))
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tee->allocpad = pad;
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else
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GST_WARNING_OBJECT (object, "Tried to set alloc pad %s which"
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" is not my pad", GST_OBJECT_NAME (pad));
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GST_OBJECT_UNLOCK (pad);
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break;
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}
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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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GST_OBJECT_UNLOCK (tee);
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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,
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GParamSpec * pspec)
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{
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GstTee *tee = GST_TEE (object);
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GST_OBJECT_LOCK (tee);
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switch (prop_id) {
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case PROP_NUM_SRC_PADS:
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g_value_set_int (value, GST_ELEMENT (tee)->numsrcpads);
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break;
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case PROP_HAS_SINK_LOOP:
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g_value_set_boolean (value, tee->has_sink_loop);
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break;
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case PROP_HAS_CHAIN:
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g_value_set_boolean (value, tee->has_chain);
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break;
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case PROP_SILENT:
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g_value_set_boolean (value, tee->silent);
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break;
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case PROP_LAST_MESSAGE:
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g_value_set_string (value, tee->last_message);
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break;
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case PROP_PULL_MODE:
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g_value_set_enum (value, tee->pull_mode);
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break;
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case PROP_ALLOC_PAD:
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g_value_set_object (value, tee->allocpad);
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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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GST_OBJECT_UNLOCK (tee);
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}
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/* we have no previous source pad we can use to proxy the pad alloc. Loop over
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* the source pads, try to alloc a buffer on each one of them. Keep a reference
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* to the first pad that succeeds, we will be using it to alloc more buffers
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* later. must be called with the OBJECT_LOCK on tee. */
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static GstFlowReturn
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gst_tee_find_buffer_alloc (GstTee * tee, guint64 offset, guint size,
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GstCaps * caps, GstBuffer ** buf)
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{
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GstFlowReturn res;
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GList *pads;
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guint32 cookie;
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res = GST_FLOW_NOT_LINKED;
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retry:
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pads = GST_ELEMENT_CAST (tee)->srcpads;
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cookie = GST_ELEMENT_CAST (tee)->pads_cookie;
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while (pads) {
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GstPad *pad;
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PushData *data;
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pad = GST_PAD_CAST (pads->data);
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gst_object_ref (pad);
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GST_DEBUG_OBJECT (tee, "try alloc on pad %s:%s", GST_DEBUG_PAD_NAME (pad));
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GST_OBJECT_UNLOCK (tee);
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GST_TEE_DYN_LOCK (tee);
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data = g_object_get_qdata (G_OBJECT (pad), push_data);
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if (!data->removed)
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res = gst_pad_alloc_buffer (pad, offset, size, caps, buf);
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else
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res = GST_FLOW_NOT_LINKED;
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GST_TEE_DYN_UNLOCK (tee);
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|
|
GST_DEBUG_OBJECT (tee, "got return value %d", res);
|
|
|
|
gst_object_unref (pad);
|
|
|
|
GST_OBJECT_LOCK (tee);
|
|
if (GST_ELEMENT_CAST (tee)->pads_cookie != cookie) {
|
|
GST_DEBUG_OBJECT (tee, "pad list changed, restart");
|
|
/* pad list changed, restart. If the pad alloc function returned OK we
|
|
* need to unref the buffer */
|
|
if (res == GST_FLOW_OK)
|
|
gst_buffer_unref (*buf);
|
|
*buf = NULL;
|
|
goto retry;
|
|
}
|
|
if (res == GST_FLOW_OK) {
|
|
GST_DEBUG_OBJECT (tee, "we have a buffer on pad %s:%s",
|
|
GST_DEBUG_PAD_NAME (pad));
|
|
/* we have a buffer, keep the pad for later and exit the loop. */
|
|
tee->allocpad = pad;
|
|
GST_OBJECT_UNLOCK (tee);
|
|
g_object_notify (G_OBJECT (tee), "alloc-pad");
|
|
GST_OBJECT_LOCK (tee);
|
|
break;
|
|
}
|
|
/* no valid buffer, try another pad */
|
|
pads = g_list_next (pads);
|
|
}
|
|
|
|
return res;
|
|
}
|
|
|
|
static GstFlowReturn
|
|
gst_tee_buffer_alloc (GstPad * pad, guint64 offset, guint size,
|
|
GstCaps * caps, GstBuffer ** buf)
|
|
{
|
|
GstTee *tee;
|
|
GstFlowReturn res;
|
|
GstPad *allocpad;
|
|
|
|
tee = GST_TEE (GST_PAD_PARENT (pad));
|
|
|
|
res = GST_FLOW_NOT_LINKED;
|
|
|
|
GST_OBJECT_LOCK (tee);
|
|
if ((allocpad = tee->allocpad)) {
|
|
PushData *data;
|
|
|
|
/* if we had a previous pad we used for allocating a buffer, continue using
|
|
* it. */
|
|
GST_DEBUG_OBJECT (tee, "using pad %s:%s for alloc",
|
|
GST_DEBUG_PAD_NAME (allocpad));
|
|
gst_object_ref (allocpad);
|
|
GST_OBJECT_UNLOCK (tee);
|
|
|
|
GST_TEE_DYN_LOCK (tee);
|
|
data = g_object_get_qdata (G_OBJECT (allocpad), push_data);
|
|
if (!data->removed)
|
|
res = gst_pad_alloc_buffer (allocpad, offset, size, caps, buf);
|
|
else
|
|
res = GST_FLOW_NOT_LINKED;
|
|
GST_TEE_DYN_UNLOCK (tee);
|
|
|
|
gst_object_unref (allocpad);
|
|
|
|
GST_OBJECT_LOCK (tee);
|
|
}
|
|
/* either we failed to alloc on the the previous pad or we did not have a
|
|
* previous pad. */
|
|
if (res == GST_FLOW_NOT_LINKED) {
|
|
/* find a new pad to alloc a buffer on */
|
|
GST_DEBUG_OBJECT (tee, "finding pad for alloc");
|
|
res = gst_tee_find_buffer_alloc (tee, offset, size, caps, buf);
|
|
}
|
|
GST_OBJECT_UNLOCK (tee);
|
|
|
|
return res;
|
|
}
|
|
|
|
/* on the sink we accept caps that are acceptable to all srcpads */
|
|
static gboolean
|
|
gst_tee_sink_acceptcaps (GstPad * pad, GstCaps * caps)
|
|
{
|
|
GstTee *tee;
|
|
gboolean res, done;
|
|
GstIterator *it;
|
|
|
|
tee = GST_TEE (GST_PAD_PARENT (pad));
|
|
|
|
it = gst_element_iterate_src_pads (GST_ELEMENT_CAST (tee));
|
|
|
|
res = TRUE;
|
|
done = FALSE;
|
|
while (!done && res) {
|
|
gpointer item;
|
|
|
|
switch (gst_iterator_next (it, &item)) {
|
|
case GST_ITERATOR_OK:
|
|
res &= gst_pad_peer_accept_caps (GST_PAD_CAST (item), caps);
|
|
gst_object_unref (item);
|
|
break;
|
|
case GST_ITERATOR_RESYNC:
|
|
res = TRUE;
|
|
gst_iterator_resync (it);
|
|
break;
|
|
case GST_ITERATOR_ERROR:
|
|
res = FALSE;
|
|
done = TRUE;
|
|
break;
|
|
case GST_ITERATOR_DONE:
|
|
done = TRUE;
|
|
break;
|
|
}
|
|
}
|
|
gst_iterator_free (it);
|
|
|
|
return res;
|
|
}
|
|
|
|
static GstFlowReturn
|
|
gst_tee_do_push (GstTee * tee, GstPad * pad, gpointer data, gboolean is_list)
|
|
{
|
|
GstFlowReturn res;
|
|
|
|
if (G_UNLIKELY (!tee->silent)) {
|
|
GST_OBJECT_LOCK (tee);
|
|
g_free (tee->last_message);
|
|
if (is_list) {
|
|
tee->last_message =
|
|
g_strdup_printf ("chain-list ******* (%s:%s)t %p",
|
|
GST_DEBUG_PAD_NAME (pad), data);
|
|
} else {
|
|
tee->last_message =
|
|
g_strdup_printf ("chain ******* (%s:%s)t (%d bytes, %"
|
|
G_GUINT64_FORMAT ") %p", GST_DEBUG_PAD_NAME (pad),
|
|
GST_BUFFER_SIZE (data), GST_BUFFER_TIMESTAMP (data), data);
|
|
}
|
|
GST_OBJECT_UNLOCK (tee);
|
|
g_object_notify (G_OBJECT (tee), "last_message");
|
|
}
|
|
|
|
/* Push */
|
|
if (pad == tee->pull_pad) {
|
|
/* don't push on the pad we're pulling from */
|
|
res = GST_FLOW_OK;
|
|
} else if (is_list) {
|
|
res =
|
|
gst_pad_push_list (pad,
|
|
gst_buffer_list_ref (GST_BUFFER_LIST_CAST (data)));
|
|
} else {
|
|
res = gst_pad_push (pad, gst_buffer_ref (GST_BUFFER_CAST (data)));
|
|
}
|
|
return res;
|
|
}
|
|
|
|
static void
|
|
clear_pads (GstPad * pad, GstTee * tee)
|
|
{
|
|
PushData *data;
|
|
|
|
data = g_object_get_qdata (G_OBJECT (pad), push_data);
|
|
|
|
/* the data must be there or we have a screwed up internal state */
|
|
g_assert (data != NULL);
|
|
|
|
data->pushed = FALSE;
|
|
data->result = GST_FLOW_NOT_LINKED;
|
|
}
|
|
|
|
static GstFlowReturn
|
|
gst_tee_handle_data (GstTee * tee, gpointer data, gboolean is_list)
|
|
{
|
|
GList *pads;
|
|
guint32 cookie;
|
|
GstFlowReturn ret, cret;
|
|
|
|
if (!is_list) {
|
|
tee->offset += GST_BUFFER_SIZE (data);
|
|
}
|
|
|
|
GST_OBJECT_LOCK (tee);
|
|
/* mark all pads as 'not pushed on yet' */
|
|
g_list_foreach (GST_ELEMENT_CAST (tee)->srcpads, (GFunc) clear_pads, tee);
|
|
|
|
restart:
|
|
cret = GST_FLOW_NOT_LINKED;
|
|
pads = GST_ELEMENT_CAST (tee)->srcpads;
|
|
cookie = GST_ELEMENT_CAST (tee)->pads_cookie;
|
|
|
|
while (pads) {
|
|
GstPad *pad;
|
|
PushData *pdata;
|
|
|
|
pad = GST_PAD_CAST (pads->data);
|
|
|
|
/* get the private data, something is really wrong with the internal state
|
|
* when it is not there */
|
|
pdata = g_object_get_qdata (G_OBJECT (pad), push_data);
|
|
g_assert (pdata != NULL);
|
|
|
|
if (!pdata->pushed) {
|
|
/* not yet pushed, release lock and start pushing */
|
|
gst_object_ref (pad);
|
|
GST_OBJECT_UNLOCK (tee);
|
|
|
|
GST_LOG_OBJECT (tee, "Starting to push %s %p",
|
|
is_list ? "list" : "buffer", data);
|
|
|
|
ret = gst_tee_do_push (tee, pad, data, is_list);
|
|
|
|
GST_LOG_OBJECT (tee, "Pushing item %p yielded result %s", data,
|
|
gst_flow_get_name (ret));
|
|
|
|
GST_OBJECT_LOCK (tee);
|
|
/* keep track of which pad we pushed and the result value. We need to do
|
|
* this before we release the refcount on the pad, the PushData is
|
|
* destroyed when the last ref of the pad goes away. */
|
|
pdata->pushed = TRUE;
|
|
pdata->result = ret;
|
|
gst_object_unref (pad);
|
|
} else {
|
|
/* already pushed, use previous return value */
|
|
ret = pdata->result;
|
|
GST_LOG_OBJECT (tee, "pad already pushed with %s",
|
|
gst_flow_get_name (ret));
|
|
}
|
|
|
|
/* before we go combining the return value, check if the pad list is still
|
|
* the same. It could be possible that the pad we just pushed was removed
|
|
* and the return value it not valid anymore */
|
|
if (GST_ELEMENT_CAST (tee)->pads_cookie != cookie) {
|
|
GST_LOG_OBJECT (tee, "pad list changed");
|
|
/* the list of pads changed, restart iteration. Pads that we already
|
|
* pushed on and are still in the new list, will not be pushed on
|
|
* again. */
|
|
goto restart;
|
|
}
|
|
|
|
/* stop pushing more buffers when we have a fatal error */
|
|
if (ret != GST_FLOW_OK && ret != GST_FLOW_NOT_LINKED)
|
|
goto error;
|
|
|
|
/* keep all other return values, overwriting the previous one. */
|
|
if (ret != GST_FLOW_NOT_LINKED) {
|
|
GST_LOG_OBJECT (tee, "Replacing ret val %d with %d", cret, ret);
|
|
cret = ret;
|
|
}
|
|
pads = g_list_next (pads);
|
|
}
|
|
GST_OBJECT_UNLOCK (tee);
|
|
|
|
gst_mini_object_unref (GST_MINI_OBJECT_CAST (data));
|
|
|
|
/* no need to unset gvalue */
|
|
return cret;
|
|
|
|
/* ERRORS */
|
|
error:
|
|
{
|
|
GST_DEBUG_OBJECT (tee, "received error %s", gst_flow_get_name (ret));
|
|
gst_mini_object_unref (GST_MINI_OBJECT_CAST (data));
|
|
GST_OBJECT_UNLOCK (tee);
|
|
return ret;
|
|
}
|
|
}
|
|
|
|
static GstFlowReturn
|
|
gst_tee_chain (GstPad * pad, GstBuffer * buffer)
|
|
{
|
|
GstFlowReturn res;
|
|
GstTee *tee;
|
|
|
|
tee = GST_TEE (gst_pad_get_parent (pad));
|
|
|
|
GST_DEBUG_OBJECT (tee, "received buffer %p", buffer);
|
|
|
|
res = gst_tee_handle_data (tee, buffer, FALSE);
|
|
|
|
GST_DEBUG_OBJECT (tee, "handled buffer %s", gst_flow_get_name (res));
|
|
|
|
gst_object_unref (tee);
|
|
|
|
return res;
|
|
}
|
|
|
|
static GstFlowReturn
|
|
gst_tee_chain_list (GstPad * pad, GstBufferList * list)
|
|
{
|
|
GstFlowReturn res;
|
|
GstTee *tee;
|
|
|
|
tee = GST_TEE (gst_pad_get_parent (pad));
|
|
|
|
GST_DEBUG_OBJECT (tee, "received list %p", list);
|
|
|
|
res = gst_tee_handle_data (tee, list, TRUE);
|
|
|
|
GST_DEBUG_OBJECT (tee, "handled list %s", gst_flow_get_name (res));
|
|
|
|
gst_object_unref (tee);
|
|
|
|
return res;
|
|
}
|
|
|
|
static gboolean
|
|
gst_tee_sink_activate_push (GstPad * pad, gboolean active)
|
|
{
|
|
GstTee *tee;
|
|
|
|
tee = GST_TEE (GST_OBJECT_PARENT (pad));
|
|
|
|
GST_OBJECT_LOCK (tee);
|
|
tee->sink_mode = active && GST_ACTIVATE_PUSH;
|
|
|
|
if (active && !tee->has_chain)
|
|
goto no_chain;
|
|
GST_OBJECT_UNLOCK (tee);
|
|
|
|
return TRUE;
|
|
|
|
/* ERRORS */
|
|
no_chain:
|
|
{
|
|
GST_OBJECT_UNLOCK (tee);
|
|
GST_INFO_OBJECT (tee,
|
|
"Tee cannot operate in push mode with has-chain==FALSE");
|
|
return FALSE;
|
|
}
|
|
}
|
|
|
|
static gboolean
|
|
gst_tee_src_activate_pull (GstPad * pad, gboolean active)
|
|
{
|
|
GstTee *tee;
|
|
gboolean res;
|
|
GstPad *sinkpad;
|
|
|
|
tee = GST_TEE (gst_pad_get_parent (pad));
|
|
|
|
GST_OBJECT_LOCK (tee);
|
|
|
|
if (tee->pull_mode == GST_TEE_PULL_MODE_NEVER)
|
|
goto cannot_pull;
|
|
|
|
if (tee->pull_mode == GST_TEE_PULL_MODE_SINGLE && active && tee->pull_pad)
|
|
goto cannot_pull_multiple_srcs;
|
|
|
|
sinkpad = gst_object_ref (tee->sinkpad);
|
|
|
|
GST_OBJECT_UNLOCK (tee);
|
|
|
|
res = gst_pad_activate_pull (sinkpad, active);
|
|
gst_object_unref (sinkpad);
|
|
|
|
if (!res)
|
|
goto sink_activate_failed;
|
|
|
|
GST_OBJECT_LOCK (tee);
|
|
if (active) {
|
|
if (tee->pull_mode == GST_TEE_PULL_MODE_SINGLE)
|
|
tee->pull_pad = pad;
|
|
} else {
|
|
if (pad == tee->pull_pad)
|
|
tee->pull_pad = NULL;
|
|
}
|
|
tee->sink_mode = active && GST_ACTIVATE_PULL;
|
|
GST_OBJECT_UNLOCK (tee);
|
|
|
|
gst_object_unref (tee);
|
|
|
|
return res;
|
|
|
|
/* ERRORS */
|
|
cannot_pull:
|
|
{
|
|
GST_OBJECT_UNLOCK (tee);
|
|
GST_INFO_OBJECT (tee, "Cannot activate in pull mode, pull-mode "
|
|
"set to NEVER");
|
|
gst_object_unref (tee);
|
|
return FALSE;
|
|
}
|
|
cannot_pull_multiple_srcs:
|
|
{
|
|
GST_OBJECT_UNLOCK (tee);
|
|
GST_INFO_OBJECT (tee, "Cannot activate multiple src pads in pull mode, "
|
|
"pull-mode set to SINGLE");
|
|
gst_object_unref (tee);
|
|
return FALSE;
|
|
}
|
|
sink_activate_failed:
|
|
{
|
|
GST_INFO_OBJECT (tee, "Failed to %sactivate sink pad in pull mode",
|
|
active ? "" : "de");
|
|
gst_object_unref (tee);
|
|
return FALSE;
|
|
}
|
|
}
|
|
|
|
static gboolean
|
|
gst_tee_src_check_get_range (GstPad * pad)
|
|
{
|
|
GstTee *tee;
|
|
gboolean res;
|
|
GstPad *sinkpad;
|
|
|
|
tee = GST_TEE (gst_pad_get_parent (pad));
|
|
|
|
GST_OBJECT_LOCK (tee);
|
|
|
|
if (tee->pull_mode == GST_TEE_PULL_MODE_NEVER)
|
|
goto cannot_pull;
|
|
|
|
if (tee->pull_mode == GST_TEE_PULL_MODE_SINGLE && tee->pull_pad)
|
|
goto cannot_pull_multiple_srcs;
|
|
|
|
sinkpad = gst_object_ref (tee->sinkpad);
|
|
|
|
GST_OBJECT_UNLOCK (tee);
|
|
|
|
res = gst_pad_check_pull_range (sinkpad);
|
|
gst_object_unref (sinkpad);
|
|
|
|
gst_object_unref (tee);
|
|
|
|
return res;
|
|
|
|
/* ERRORS */
|
|
cannot_pull:
|
|
{
|
|
GST_OBJECT_UNLOCK (tee);
|
|
GST_INFO_OBJECT (tee, "Cannot activate in pull mode, pull-mode "
|
|
"set to NEVER");
|
|
gst_object_unref (tee);
|
|
return FALSE;
|
|
}
|
|
cannot_pull_multiple_srcs:
|
|
{
|
|
GST_OBJECT_UNLOCK (tee);
|
|
GST_INFO_OBJECT (tee, "Cannot activate multiple src pads in pull mode, "
|
|
"pull-mode set to SINGLE");
|
|
gst_object_unref (tee);
|
|
return FALSE;
|
|
}
|
|
}
|
|
|
|
static void
|
|
gst_tee_push_eos (GstPad * pad, GstTee * tee)
|
|
{
|
|
if (pad != tee->pull_pad)
|
|
gst_pad_push_event (pad, gst_event_new_eos ());
|
|
gst_object_unref (pad);
|
|
}
|
|
|
|
static void
|
|
gst_tee_pull_eos (GstTee * tee)
|
|
{
|
|
GstIterator *iter;
|
|
|
|
iter = gst_element_iterate_src_pads (GST_ELEMENT (tee));
|
|
gst_iterator_foreach (iter, (GFunc) gst_tee_push_eos, tee);
|
|
gst_iterator_free (iter);
|
|
}
|
|
|
|
static GstFlowReturn
|
|
gst_tee_src_get_range (GstPad * pad, guint64 offset, guint length,
|
|
GstBuffer ** buf)
|
|
{
|
|
GstTee *tee;
|
|
GstFlowReturn ret;
|
|
|
|
tee = GST_TEE (gst_pad_get_parent (pad));
|
|
|
|
ret = gst_pad_pull_range (tee->sinkpad, offset, length, buf);
|
|
|
|
if (ret == GST_FLOW_OK)
|
|
ret = gst_tee_handle_data (tee, gst_buffer_ref (*buf), FALSE);
|
|
else if (ret == GST_FLOW_UNEXPECTED)
|
|
gst_tee_pull_eos (tee);
|
|
|
|
gst_object_unref (tee);
|
|
|
|
return ret;
|
|
}
|