mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-09-08 13:18:52 +00:00
Should probably proxy ALLOCATION queries on that though, if set. But what else? CAPS and ACCEPT_CAPS too?
916 lines
25 KiB
C
916 lines
25 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., 51 Franklin St, Fifth Floor,
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* Boston, MA 02110-1301, 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. Branching the data flow is useful when e.g.
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* capturing a video where the video is shown on the screen and also encoded and
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* written to a file. Another example is playing music and hooking up a
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* visualisation module.
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*
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* One needs to use separate queue elements (or a multiqueue) in each branch to
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* provide separate threads for each branch. Otherwise a blocked dataflow in one
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* branch would stall the other branches.
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*
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* <refsect2>
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* <title>Example launch line</title>
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* |[
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* gst-launch filesrc location=song.ogg ! decodebin2 ! tee name=t ! queue ! autoaudiosink t. ! queue ! audioconvert ! goom ! videoconvert ! autovideosink
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* ]| Play a song.ogg from local dir and render visualisations using the goom
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* element.
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* </refsect2>
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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 "gst/glib-compat-private.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_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_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 =
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GST_STATIC_PAD_TEMPLATE ("src_%u",
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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 \
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GST_DEBUG_CATEGORY_INIT (gst_tee_debug, "tee", 0, "tee element");
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#define gst_tee_parent_class parent_class
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G_DEFINE_TYPE_WITH_CODE (GstTee, gst_tee, GST_TYPE_ELEMENT, _do_init);
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static GParamSpec *pspec_last_message = NULL;
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static GParamSpec *pspec_alloc_pad = NULL;
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GType gst_tee_pad_get_type (void);
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#define GST_TYPE_TEE_PAD \
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(gst_tee_pad_get_type())
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#define GST_TEE_PAD(obj) \
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(G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_TEE_PAD, GstTeePad))
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#define GST_TEE_PAD_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_CAST ((klass), GST_TYPE_TEE_PAD, GstTeePadClass))
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#define GST_IS_TEE_PAD(obj) \
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(G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_TEE_PAD))
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#define GST_IS_TEE_PAD_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_TYPE ((klass), GST_TYPE_TEE_PAD))
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#define GST_TEE_PAD_CAST(obj) \
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((GstTeePad *)(obj))
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typedef struct _GstTeePad GstTeePad;
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typedef struct _GstTeePadClass GstTeePadClass;
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struct _GstTeePad
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{
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GstPad parent;
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gboolean pushed;
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GstFlowReturn result;
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gboolean removed;
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};
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struct _GstTeePadClass
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{
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GstPadClass parent;
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};
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G_DEFINE_TYPE (GstTeePad, gst_tee_pad, GST_TYPE_PAD);
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static void
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gst_tee_pad_class_init (GstTeePadClass * klass)
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{
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}
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static void
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gst_tee_pad_reset (GstTeePad * pad)
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{
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pad->pushed = FALSE;
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pad->result = GST_FLOW_NOT_LINKED;
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pad->removed = FALSE;
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}
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static void
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gst_tee_pad_init (GstTeePad * pad)
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{
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gst_tee_pad_reset (pad);
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}
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static GstPad *gst_tee_request_new_pad (GstElement * element,
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GstPadTemplate * temp, const gchar * unused, const GstCaps * caps);
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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 void gst_tee_dispose (GObject * object);
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static GstFlowReturn gst_tee_chain (GstPad * pad, GstObject * parent,
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GstBuffer * buffer);
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static GstFlowReturn gst_tee_chain_list (GstPad * pad, GstObject * parent,
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GstBufferList * list);
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static gboolean gst_tee_sink_event (GstPad * pad, GstObject * parent,
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GstEvent * event);
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static gboolean gst_tee_sink_query (GstPad * pad, GstObject * parent,
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GstQuery * query);
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static gboolean gst_tee_sink_activate_mode (GstPad * pad, GstObject * parent,
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GstPadMode mode, gboolean active);
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static gboolean gst_tee_src_query (GstPad * pad, GstObject * parent,
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GstQuery * query);
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static gboolean gst_tee_src_activate_mode (GstPad * pad, GstObject * parent,
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GstPadMode mode, gboolean active);
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static GstFlowReturn gst_tee_src_get_range (GstPad * pad, GstObject * parent,
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guint64 offset, guint length, GstBuffer ** buf);
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static void
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gst_tee_dispose (GObject * object)
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{
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GList *item;
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restart:
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for (item = GST_ELEMENT_PADS (object); item; item = g_list_next (item)) {
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GstPad *pad = GST_PAD (item->data);
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if (GST_PAD_IS_SRC (pad)) {
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gst_element_release_request_pad (GST_ELEMENT (object), pad);
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goto restart;
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}
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}
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G_OBJECT_CLASS (parent_class)->dispose (object);
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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_clear (&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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gobject_class->dispose = gst_tee_dispose;
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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_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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pspec_last_message = 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_LAST_MESSAGE,
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pspec_last_message);
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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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pspec_alloc_pad = g_param_spec_object ("alloc-pad", "Allocation Src Pad",
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"The pad ALLOCATION queries will be proxied to (unused)", GST_TYPE_PAD,
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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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pspec_alloc_pad);
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gst_element_class_set_static_metadata (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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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)
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{
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g_mutex_init (&tee->dyn_lock);
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tee->sinkpad = gst_pad_new_from_static_template (&sinktemplate, "sink");
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tee->sink_mode = GST_PAD_MODE_NONE;
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gst_pad_set_event_function (tee->sinkpad,
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GST_DEBUG_FUNCPTR (gst_tee_sink_event));
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gst_pad_set_query_function (tee->sinkpad,
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GST_DEBUG_FUNCPTR (gst_tee_sink_query));
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gst_pad_set_activatemode_function (tee->sinkpad,
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GST_DEBUG_FUNCPTR (gst_tee_sink_activate_mode));
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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_OBJECT_FLAG_SET (tee->sinkpad, GST_PAD_FLAG_PROXY_CAPS);
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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 void
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gst_tee_notify_alloc_pad (GstTee * tee)
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{
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g_object_notify_by_pspec ((GObject *) tee, pspec_alloc_pad);
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}
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static gboolean
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forward_sticky_events (GstPad * pad, GstEvent ** event, gpointer user_data)
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{
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GstPad *srcpad = GST_PAD_CAST (user_data);
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gst_pad_push_event (srcpad, gst_event_ref (*event));
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return TRUE;
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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, const GstCaps * caps)
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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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GstPadMode mode;
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gboolean res;
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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_%u", tee->pad_counter++);
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srcpad = GST_PAD_CAST (g_object_new (GST_TYPE_TEE_PAD,
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"name", name, "direction", templ->direction, "template", templ,
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NULL));
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g_free (name);
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mode = tee->sink_mode;
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GST_OBJECT_UNLOCK (tee);
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switch (mode) {
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case GST_PAD_MODE_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_PAD_MODE_PUSH:
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res = gst_pad_activate_mode (srcpad, GST_PAD_MODE_PUSH, 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_activatemode_function (srcpad,
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GST_DEBUG_FUNCPTR (gst_tee_src_activate_mode));
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gst_pad_set_query_function (srcpad, GST_DEBUG_FUNCPTR (gst_tee_src_query));
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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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/* Forward sticky events to the new srcpad */
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gst_pad_sticky_events_foreach (tee->sinkpad, forward_sticky_events, srcpad);
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GST_OBJECT_FLAG_SET (srcpad, GST_PAD_FLAG_PROXY_CAPS);
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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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gboolean changed = FALSE;
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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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changed = TRUE;
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}
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GST_OBJECT_UNLOCK (tee);
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gst_object_unref (srcpad);
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if (changed) {
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gst_tee_notify_alloc_pad (tee);
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}
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return NULL;
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}
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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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gboolean changed = FALSE;
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tee = GST_TEE (element);
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GST_DEBUG_OBJECT (tee, "releasing 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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GST_OBJECT_LOCK (tee);
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/* mark the pad as removed so that future pad_alloc fails with NOT_LINKED. */
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GST_TEE_PAD_CAST (pad)->removed = TRUE;
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if (tee->allocpad == pad) {
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tee->allocpad = NULL;
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changed = TRUE;
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}
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GST_OBJECT_UNLOCK (tee);
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gst_object_ref (pad);
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gst_element_remove_pad (GST_ELEMENT_CAST (tee), pad);
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gst_pad_set_active (pad, FALSE);
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GST_TEE_DYN_UNLOCK (tee);
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|
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gst_object_unref (pad);
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|
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if (changed) {
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gst_tee_notify_alloc_pad (tee);
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}
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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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|
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GST_OBJECT_LOCK (tee);
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switch (prop_id) {
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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 = (GstTeePullMode) 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"
|
|
" 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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}
|
|
default:
|
|
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
|
|
break;
|
|
}
|
|
GST_OBJECT_UNLOCK (tee);
|
|
}
|
|
|
|
static void
|
|
gst_tee_get_property (GObject * object, guint prop_id, GValue * value,
|
|
GParamSpec * pspec)
|
|
{
|
|
GstTee *tee = GST_TEE (object);
|
|
|
|
GST_OBJECT_LOCK (tee);
|
|
switch (prop_id) {
|
|
case PROP_NUM_SRC_PADS:
|
|
g_value_set_int (value, GST_ELEMENT (tee)->numsrcpads);
|
|
break;
|
|
case PROP_HAS_CHAIN:
|
|
g_value_set_boolean (value, tee->has_chain);
|
|
break;
|
|
case PROP_SILENT:
|
|
g_value_set_boolean (value, tee->silent);
|
|
break;
|
|
case PROP_LAST_MESSAGE:
|
|
g_value_set_string (value, tee->last_message);
|
|
break;
|
|
case PROP_PULL_MODE:
|
|
g_value_set_enum (value, tee->pull_mode);
|
|
break;
|
|
case PROP_ALLOC_PAD:
|
|
g_value_set_object (value, tee->allocpad);
|
|
break;
|
|
default:
|
|
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
|
|
break;
|
|
}
|
|
GST_OBJECT_UNLOCK (tee);
|
|
}
|
|
|
|
static gboolean
|
|
gst_tee_sink_event (GstPad * pad, GstObject * parent, GstEvent * event)
|
|
{
|
|
gboolean res;
|
|
|
|
switch (GST_EVENT_TYPE (event)) {
|
|
default:
|
|
res = gst_pad_event_default (pad, parent, event);
|
|
break;
|
|
}
|
|
|
|
return res;
|
|
}
|
|
|
|
static gboolean
|
|
gst_tee_sink_query (GstPad * pad, GstObject * parent, GstQuery * query)
|
|
{
|
|
gboolean res;
|
|
|
|
switch (GST_QUERY_TYPE (query)) {
|
|
default:
|
|
res = gst_pad_query_default (pad, parent, query);
|
|
break;
|
|
}
|
|
return res;
|
|
}
|
|
|
|
static void
|
|
gst_tee_do_message (GstTee * tee, GstPad * pad, gpointer data, gboolean is_list)
|
|
{
|
|
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 (%" G_GSIZE_FORMAT
|
|
" bytes, %" G_GUINT64_FORMAT ") %p", GST_DEBUG_PAD_NAME (pad),
|
|
gst_buffer_get_size (data), GST_BUFFER_TIMESTAMP (data), data);
|
|
}
|
|
GST_OBJECT_UNLOCK (tee);
|
|
|
|
g_object_notify_by_pspec ((GObject *) tee, pspec_last_message);
|
|
}
|
|
|
|
static GstFlowReturn
|
|
gst_tee_do_push (GstTee * tee, GstPad * pad, gpointer data, gboolean is_list)
|
|
{
|
|
GstFlowReturn res;
|
|
|
|
/* 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)
|
|
{
|
|
GST_TEE_PAD_CAST (pad)->pushed = FALSE;
|
|
GST_TEE_PAD_CAST (pad)->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 (G_UNLIKELY (!tee->silent))
|
|
gst_tee_do_message (tee, tee->sinkpad, data, is_list);
|
|
|
|
GST_OBJECT_LOCK (tee);
|
|
pads = GST_ELEMENT_CAST (tee)->srcpads;
|
|
|
|
/* special case for zero pads */
|
|
if (G_UNLIKELY (!pads))
|
|
goto no_pads;
|
|
|
|
/* special case for just one pad that avoids reffing the buffer */
|
|
if (!pads->next) {
|
|
GstPad *pad = GST_PAD_CAST (pads->data);
|
|
|
|
GST_OBJECT_UNLOCK (tee);
|
|
|
|
if (pad == tee->pull_pad) {
|
|
ret = GST_FLOW_OK;
|
|
} else if (is_list) {
|
|
ret = gst_pad_push_list (pad, GST_BUFFER_LIST_CAST (data));
|
|
} else {
|
|
ret = gst_pad_push (pad, GST_BUFFER_CAST (data));
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
/* mark all pads as 'not pushed on yet' */
|
|
g_list_foreach (pads, (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;
|
|
|
|
pad = GST_PAD_CAST (pads->data);
|
|
|
|
if (G_LIKELY (!GST_TEE_PAD_CAST (pad)->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 */
|
|
GST_TEE_PAD_CAST (pad)->pushed = TRUE;
|
|
GST_TEE_PAD_CAST (pad)->result = ret;
|
|
gst_object_unref (pad);
|
|
} else {
|
|
/* already pushed, use previous return value */
|
|
ret = GST_TEE_PAD_CAST (pad)->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 (G_UNLIKELY (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 (G_UNLIKELY (ret != GST_FLOW_OK && ret != GST_FLOW_NOT_LINKED))
|
|
goto error;
|
|
|
|
/* keep all other return values, overwriting the previous one. */
|
|
if (G_LIKELY (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 */
|
|
no_pads:
|
|
{
|
|
GST_DEBUG_OBJECT (tee, "there are no pads, return not-linked");
|
|
ret = GST_FLOW_NOT_LINKED;
|
|
goto error;
|
|
}
|
|
error:
|
|
{
|
|
GST_DEBUG_OBJECT (tee, "received error %s", gst_flow_get_name (ret));
|
|
GST_OBJECT_UNLOCK (tee);
|
|
gst_mini_object_unref (GST_MINI_OBJECT_CAST (data));
|
|
return ret;
|
|
}
|
|
}
|
|
|
|
static GstFlowReturn
|
|
gst_tee_chain (GstPad * pad, GstObject * parent, GstBuffer * buffer)
|
|
{
|
|
GstFlowReturn res;
|
|
GstTee *tee;
|
|
|
|
tee = GST_TEE_CAST (parent);
|
|
|
|
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));
|
|
|
|
return res;
|
|
}
|
|
|
|
static GstFlowReturn
|
|
gst_tee_chain_list (GstPad * pad, GstObject * parent, GstBufferList * list)
|
|
{
|
|
GstFlowReturn res;
|
|
GstTee *tee;
|
|
|
|
tee = GST_TEE_CAST (parent);
|
|
|
|
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));
|
|
|
|
return res;
|
|
}
|
|
|
|
static gboolean
|
|
gst_tee_sink_activate_mode (GstPad * pad, GstObject * parent, GstPadMode mode,
|
|
gboolean active)
|
|
{
|
|
gboolean res;
|
|
GstTee *tee;
|
|
|
|
tee = GST_TEE (parent);
|
|
|
|
switch (mode) {
|
|
case GST_PAD_MODE_PUSH:
|
|
{
|
|
GST_OBJECT_LOCK (tee);
|
|
tee->sink_mode = active ? mode : GST_PAD_MODE_NONE;
|
|
|
|
if (active && !tee->has_chain)
|
|
goto no_chain;
|
|
GST_OBJECT_UNLOCK (tee);
|
|
res = TRUE;
|
|
break;
|
|
}
|
|
default:
|
|
res = FALSE;
|
|
break;
|
|
}
|
|
return res;
|
|
|
|
/* 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_mode (GstPad * pad, GstObject * parent, GstPadMode mode,
|
|
gboolean active)
|
|
{
|
|
GstTee *tee;
|
|
gboolean res;
|
|
GstPad *sinkpad;
|
|
|
|
tee = GST_TEE (parent);
|
|
|
|
switch (mode) {
|
|
case GST_PAD_MODE_PULL:
|
|
{
|
|
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_mode (sinkpad, GST_PAD_MODE_PULL, 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_PAD_MODE_PULL : GST_PAD_MODE_NONE);
|
|
GST_OBJECT_UNLOCK (tee);
|
|
break;
|
|
}
|
|
default:
|
|
res = TRUE;
|
|
break;
|
|
}
|
|
|
|
return res;
|
|
|
|
/* ERRORS */
|
|
cannot_pull:
|
|
{
|
|
GST_OBJECT_UNLOCK (tee);
|
|
GST_INFO_OBJECT (tee, "Cannot activate in pull mode, pull-mode "
|
|
"set to NEVER");
|
|
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");
|
|
return FALSE;
|
|
}
|
|
sink_activate_failed:
|
|
{
|
|
GST_INFO_OBJECT (tee, "Failed to %sactivate sink pad in pull mode",
|
|
active ? "" : "de");
|
|
return FALSE;
|
|
}
|
|
}
|
|
|
|
static gboolean
|
|
gst_tee_src_query (GstPad * pad, GstObject * parent, GstQuery * query)
|
|
{
|
|
GstTee *tee;
|
|
gboolean res;
|
|
GstPad *sinkpad;
|
|
|
|
tee = GST_TEE (parent);
|
|
|
|
switch (GST_QUERY_TYPE (query)) {
|
|
case GST_QUERY_SCHEDULING:
|
|
{
|
|
gboolean pull_mode;
|
|
|
|
GST_OBJECT_LOCK (tee);
|
|
pull_mode = TRUE;
|
|
if (tee->pull_mode == GST_TEE_PULL_MODE_NEVER) {
|
|
GST_INFO_OBJECT (tee, "Cannot activate in pull mode, pull-mode "
|
|
"set to NEVER");
|
|
pull_mode = FALSE;
|
|
} else if (tee->pull_mode == GST_TEE_PULL_MODE_SINGLE && tee->pull_pad) {
|
|
GST_INFO_OBJECT (tee, "Cannot activate multiple src pads in pull mode, "
|
|
"pull-mode set to SINGLE");
|
|
pull_mode = FALSE;
|
|
}
|
|
|
|
sinkpad = gst_object_ref (tee->sinkpad);
|
|
GST_OBJECT_UNLOCK (tee);
|
|
|
|
if (pull_mode) {
|
|
/* ask peer if we can operate in pull mode */
|
|
res = gst_pad_peer_query (sinkpad, query);
|
|
} else {
|
|
res = TRUE;
|
|
}
|
|
gst_object_unref (sinkpad);
|
|
break;
|
|
}
|
|
default:
|
|
res = gst_pad_query_default (pad, parent, query);
|
|
break;
|
|
}
|
|
|
|
return res;
|
|
}
|
|
|
|
static void
|
|
gst_tee_push_eos (const GValue * vpad, GstTee * tee)
|
|
{
|
|
GstPad *pad = g_value_get_object (vpad);
|
|
|
|
if (pad != tee->pull_pad)
|
|
gst_pad_push_event (pad, gst_event_new_eos ());
|
|
}
|
|
|
|
static void
|
|
gst_tee_pull_eos (GstTee * tee)
|
|
{
|
|
GstIterator *iter;
|
|
|
|
iter = gst_element_iterate_src_pads (GST_ELEMENT (tee));
|
|
gst_iterator_foreach (iter, (GstIteratorForeachFunction) gst_tee_push_eos,
|
|
tee);
|
|
gst_iterator_free (iter);
|
|
}
|
|
|
|
static GstFlowReturn
|
|
gst_tee_src_get_range (GstPad * pad, GstObject * parent, guint64 offset,
|
|
guint length, GstBuffer ** buf)
|
|
{
|
|
GstTee *tee;
|
|
GstFlowReturn ret;
|
|
|
|
tee = GST_TEE (parent);
|
|
|
|
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_EOS)
|
|
gst_tee_pull_eos (tee);
|
|
|
|
return ret;
|
|
}
|