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If the aggregated size is 0 and we create a pool, the pool would provide
buffers with no memory assigned. Handle that case and skip the pool.
This was the behaviour before cf803ea9f4
.
Add a test for this scenario.
https://bugzilla.gnome.org/show_bug.cgi?id=730758
1241 lines
35 KiB
C
1241 lines
35 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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* @title: 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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* ## Example launch line
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* |[
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* gst-launch-1.0 filesrc location=song.ogg ! decodebin ! tee name=t ! queue ! audioconvert ! audioresample ! autoaudiosink t. ! queue ! audioconvert ! goom ! videoconvert ! autovideosink
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* ]|
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*
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* Play song.ogg audio file which must be in the current working directory
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* and render visualisations using the goom element (this can be easier done
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* using the playbin element, this is just an example pipeline).
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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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#include <stdio.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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#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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#define DEFAULT_PROP_ALLOW_NOT_LINKED FALSE
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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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PROP_ALLOW_NOT_LINKED,
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};
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static GstStaticPadTemplate src_template = 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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guint index;
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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_hash_table_unref (tee->pad_indexes);
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g_free (tee->last_message);
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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 (DEPRECATED, has no effect)",
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GST_TYPE_PAD,
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G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS | G_PARAM_DEPRECATED);
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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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/**
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* GstTee:allow-not-linked
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*
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* This property makes sink pad return GST_FLOW_OK even if there are no
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* source pads or any of them is linked.
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*
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* This is useful to avoid errors when you have a dynamic pipeline and during
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* a reconnection you can have all the pads unlinked or removed.
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*
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* Since: 1.6
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*/
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g_object_class_install_property (gobject_class, PROP_ALLOW_NOT_LINKED,
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g_param_spec_boolean ("allow-not-linked", "Allow not linked",
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"Return GST_FLOW_OK even if there are no source pads or they are "
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"all unlinked", DEFAULT_PROP_ALLOW_NOT_LINKED,
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G_PARAM_CONSTRUCT | G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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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_static_pad_template (gstelement_class, &sinktemplate);
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gst_element_class_add_static_pad_template (gstelement_class, &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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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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|
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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->pad_indexes = g_hash_table_new (NULL, NULL);
|
|
|
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tee->last_message = NULL;
|
|
}
|
|
|
|
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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GstPad *srcpad = GST_PAD_CAST (user_data);
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|
GstFlowReturn ret;
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|
|
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ret = gst_pad_store_sticky_event (srcpad, *event);
|
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if (ret != GST_FLOW_OK) {
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GST_DEBUG_OBJECT (srcpad, "storing sticky event %p (%s) failed: %s", *event,
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GST_EVENT_TYPE_NAME (*event), gst_flow_get_name (ret));
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}
|
|
|
|
return TRUE;
|
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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 * name_templ, const GstCaps * caps)
|
|
{
|
|
gchar *name;
|
|
GstPad *srcpad;
|
|
GstTee *tee;
|
|
GstPadMode mode;
|
|
gboolean res;
|
|
guint index = 0;
|
|
|
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tee = GST_TEE (element);
|
|
|
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GST_DEBUG_OBJECT (tee, "requesting pad");
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|
|
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GST_OBJECT_LOCK (tee);
|
|
|
|
if (name_templ && sscanf (name_templ, "src_%u", &index) == 1) {
|
|
GST_LOG_OBJECT (element, "name: %s (index %d)", name_templ, index);
|
|
if (g_hash_table_contains (tee->pad_indexes, GUINT_TO_POINTER (index))) {
|
|
GST_ERROR_OBJECT (element, "pad name %s is not unique", name_templ);
|
|
GST_OBJECT_UNLOCK (tee);
|
|
return NULL;
|
|
}
|
|
if (index >= tee->next_pad_index)
|
|
tee->next_pad_index = index + 1;
|
|
} else {
|
|
index = tee->next_pad_index;
|
|
|
|
while (g_hash_table_contains (tee->pad_indexes, GUINT_TO_POINTER (index)))
|
|
index++;
|
|
|
|
tee->next_pad_index = index + 1;
|
|
}
|
|
|
|
g_hash_table_insert (tee->pad_indexes, GUINT_TO_POINTER (index), NULL);
|
|
|
|
name = g_strdup_printf ("src_%u", index);
|
|
|
|
srcpad = GST_PAD_CAST (g_object_new (GST_TYPE_TEE_PAD,
|
|
"name", name, "direction", templ->direction, "template", templ,
|
|
NULL));
|
|
GST_TEE_PAD_CAST (srcpad)->index = index;
|
|
g_free (name);
|
|
|
|
mode = tee->sink_mode;
|
|
|
|
GST_OBJECT_UNLOCK (tee);
|
|
|
|
switch (mode) {
|
|
case GST_PAD_MODE_PULL:
|
|
/* we already have a src pad in pull mode, and our pull mode can only be
|
|
SINGLE, so fall through to activate this new pad in push mode */
|
|
case GST_PAD_MODE_PUSH:
|
|
res = gst_pad_activate_mode (srcpad, GST_PAD_MODE_PUSH, TRUE);
|
|
break;
|
|
default:
|
|
res = TRUE;
|
|
break;
|
|
}
|
|
|
|
if (!res)
|
|
goto activate_failed;
|
|
|
|
gst_pad_set_activatemode_function (srcpad,
|
|
GST_DEBUG_FUNCPTR (gst_tee_src_activate_mode));
|
|
gst_pad_set_query_function (srcpad, GST_DEBUG_FUNCPTR (gst_tee_src_query));
|
|
gst_pad_set_getrange_function (srcpad,
|
|
GST_DEBUG_FUNCPTR (gst_tee_src_get_range));
|
|
GST_OBJECT_FLAG_SET (srcpad, GST_PAD_FLAG_PROXY_CAPS);
|
|
/* Forward sticky events to the new srcpad */
|
|
gst_pad_sticky_events_foreach (tee->sinkpad, forward_sticky_events, srcpad);
|
|
gst_element_add_pad (GST_ELEMENT_CAST (tee), srcpad);
|
|
|
|
return srcpad;
|
|
|
|
/* ERRORS */
|
|
activate_failed:
|
|
{
|
|
gboolean changed = FALSE;
|
|
|
|
GST_OBJECT_LOCK (tee);
|
|
GST_DEBUG_OBJECT (tee, "warning failed to activate request pad");
|
|
if (tee->allocpad == srcpad) {
|
|
tee->allocpad = NULL;
|
|
changed = TRUE;
|
|
}
|
|
GST_OBJECT_UNLOCK (tee);
|
|
gst_object_unref (srcpad);
|
|
if (changed) {
|
|
gst_tee_notify_alloc_pad (tee);
|
|
}
|
|
return NULL;
|
|
}
|
|
}
|
|
|
|
static void
|
|
gst_tee_release_pad (GstElement * element, GstPad * pad)
|
|
{
|
|
GstTee *tee;
|
|
gboolean changed = FALSE;
|
|
guint index;
|
|
|
|
tee = GST_TEE (element);
|
|
|
|
GST_DEBUG_OBJECT (tee, "releasing pad");
|
|
|
|
GST_OBJECT_LOCK (tee);
|
|
index = GST_TEE_PAD_CAST (pad)->index;
|
|
/* mark the pad as removed so that future pad_alloc fails with NOT_LINKED. */
|
|
GST_TEE_PAD_CAST (pad)->removed = TRUE;
|
|
if (tee->allocpad == pad) {
|
|
tee->allocpad = NULL;
|
|
changed = TRUE;
|
|
}
|
|
GST_OBJECT_UNLOCK (tee);
|
|
|
|
gst_object_ref (pad);
|
|
gst_element_remove_pad (GST_ELEMENT_CAST (tee), pad);
|
|
|
|
gst_pad_set_active (pad, FALSE);
|
|
|
|
gst_object_unref (pad);
|
|
|
|
if (changed) {
|
|
gst_tee_notify_alloc_pad (tee);
|
|
}
|
|
|
|
GST_OBJECT_LOCK (tee);
|
|
g_hash_table_remove (tee->pad_indexes, GUINT_TO_POINTER (index));
|
|
GST_OBJECT_UNLOCK (tee);
|
|
}
|
|
|
|
static void
|
|
gst_tee_set_property (GObject * object, guint prop_id, const GValue * value,
|
|
GParamSpec * pspec)
|
|
{
|
|
GstTee *tee = GST_TEE (object);
|
|
|
|
GST_OBJECT_LOCK (tee);
|
|
switch (prop_id) {
|
|
case PROP_HAS_CHAIN:
|
|
tee->has_chain = g_value_get_boolean (value);
|
|
break;
|
|
case PROP_SILENT:
|
|
tee->silent = g_value_get_boolean (value);
|
|
break;
|
|
case PROP_PULL_MODE:
|
|
tee->pull_mode = (GstTeePullMode) g_value_get_enum (value);
|
|
break;
|
|
case PROP_ALLOC_PAD:
|
|
{
|
|
GstPad *pad = g_value_get_object (value);
|
|
GST_OBJECT_LOCK (pad);
|
|
if (GST_OBJECT_PARENT (pad) == GST_OBJECT_CAST (object))
|
|
tee->allocpad = pad;
|
|
else
|
|
GST_WARNING_OBJECT (object, "Tried to set alloc pad %s which"
|
|
" is not my pad", GST_OBJECT_NAME (pad));
|
|
GST_OBJECT_UNLOCK (pad);
|
|
break;
|
|
}
|
|
case PROP_ALLOW_NOT_LINKED:
|
|
tee->allow_not_linked = g_value_get_boolean (value);
|
|
break;
|
|
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;
|
|
case PROP_ALLOW_NOT_LINKED:
|
|
g_value_set_boolean (value, tee->allow_not_linked);
|
|
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;
|
|
}
|
|
|
|
struct AllocQueryCtx
|
|
{
|
|
GstTee *tee;
|
|
GstQuery *query;
|
|
GstAllocationParams params;
|
|
guint size;
|
|
guint min_buffers;
|
|
gboolean first_query;
|
|
guint num_pads;
|
|
};
|
|
|
|
/* This function will aggregate some of the allocation query information with
|
|
* the strategy to force upstream allocation. Depending on downstream
|
|
* allocation would otherwise make dynamic pipelines much more complicated as
|
|
* application would need to now drain buffer in certain cases before getting
|
|
* rid of a tee branch. */
|
|
static gboolean
|
|
gst_tee_query_allocation (const GValue * item, GValue * ret, gpointer user_data)
|
|
{
|
|
struct AllocQueryCtx *ctx = user_data;
|
|
GstPad *src_pad = g_value_get_object (item);
|
|
GstPad *peer_pad;
|
|
GstCaps *caps;
|
|
GstQuery *query;
|
|
guint count, i, size, min;
|
|
|
|
GST_DEBUG_OBJECT (ctx->tee, "Aggregating allocation from pad %s:%s",
|
|
GST_DEBUG_PAD_NAME (src_pad));
|
|
|
|
peer_pad = gst_pad_get_peer (src_pad);
|
|
if (!peer_pad) {
|
|
if (ctx->tee->allow_not_linked) {
|
|
GST_DEBUG_OBJECT (ctx->tee, "Pad %s:%s has no peer, but allowed.",
|
|
GST_DEBUG_PAD_NAME (src_pad));
|
|
return TRUE;
|
|
} else {
|
|
GST_DEBUG_OBJECT (ctx->tee, "Pad %s:%s has no peer, ignoring allocation.",
|
|
GST_DEBUG_PAD_NAME (src_pad));
|
|
g_value_set_boolean (ret, FALSE);
|
|
return FALSE;
|
|
}
|
|
}
|
|
|
|
gst_query_parse_allocation (ctx->query, &caps, NULL);
|
|
|
|
query = gst_query_new_allocation (caps, FALSE);
|
|
if (!gst_pad_query (peer_pad, query)) {
|
|
GST_DEBUG_OBJECT (ctx->tee,
|
|
"Allocation query failed on pad %s, ignoring allocation",
|
|
GST_PAD_NAME (src_pad));
|
|
g_value_set_boolean (ret, FALSE);
|
|
gst_query_unref (query);
|
|
gst_object_unref (peer_pad);
|
|
return FALSE;
|
|
}
|
|
|
|
gst_object_unref (peer_pad);
|
|
|
|
/* Allocation Params:
|
|
* store the maximum alignment, prefix and pading, but ignore the
|
|
* allocators and the flags which are tied to downstream allocation */
|
|
count = gst_query_get_n_allocation_params (query);
|
|
for (i = 0; i < count; i++) {
|
|
GstAllocationParams params = { 0, };
|
|
|
|
gst_query_parse_nth_allocation_param (query, i, NULL, ¶ms);
|
|
|
|
GST_DEBUG_OBJECT (ctx->tee, "Aggregating AllocationParams align=%"
|
|
G_GSIZE_FORMAT " prefix=%" G_GSIZE_FORMAT " padding=%"
|
|
G_GSIZE_FORMAT, params.align, params.prefix, params.padding);
|
|
|
|
if (ctx->params.align < params.align)
|
|
ctx->params.align = params.align;
|
|
|
|
if (ctx->params.prefix < params.prefix)
|
|
ctx->params.prefix = params.prefix;
|
|
|
|
if (ctx->params.padding < params.padding)
|
|
ctx->params.padding = params.padding;
|
|
}
|
|
|
|
/* Allocation Pool:
|
|
* We want to keep the biggest size and biggest minimum number of buffers to
|
|
* make sure downstream requirement can be satisfied. We don't really care
|
|
* about the maximum, as this is a parameter of the downstream provided
|
|
* pool. We only read the first allocation pool as the minimum number of
|
|
* buffers is normally constant regardless of the pool being used. */
|
|
if (gst_query_get_n_allocation_pools (query) > 0) {
|
|
gst_query_parse_nth_allocation_pool (query, 0, NULL, &size, &min, NULL);
|
|
|
|
GST_DEBUG_OBJECT (ctx->tee,
|
|
"Aggregating allocation pool size=%u min_buffers=%u", size, min);
|
|
|
|
if (ctx->size < size)
|
|
ctx->size = size;
|
|
|
|
if (ctx->min_buffers < min)
|
|
ctx->min_buffers = min;
|
|
}
|
|
|
|
/* Allocation Meta:
|
|
* For allocation meta, we'll need to aggregate the argument using the new
|
|
* GstMetaInfo::agggregate_func */
|
|
count = gst_query_get_n_allocation_metas (query);
|
|
for (i = 0; i < count; i++) {
|
|
guint ctx_index;
|
|
GType api;
|
|
const GstStructure *param;
|
|
|
|
api = gst_query_parse_nth_allocation_meta (query, i, ¶m);
|
|
|
|
/* For the first query, copy all metas */
|
|
if (ctx->first_query) {
|
|
gst_query_add_allocation_meta (ctx->query, api, param);
|
|
continue;
|
|
}
|
|
|
|
/* Afterward, aggregate the common params */
|
|
if (gst_query_find_allocation_meta (ctx->query, api, &ctx_index)) {
|
|
const GstStructure *ctx_param;
|
|
|
|
gst_query_parse_nth_allocation_meta (ctx->query, ctx_index, &ctx_param);
|
|
|
|
/* Keep meta which has no params */
|
|
if (ctx_param == NULL && param == NULL)
|
|
continue;
|
|
|
|
GST_DEBUG_OBJECT (ctx->tee, "Dropping allocation meta %s",
|
|
g_type_name (api));
|
|
gst_query_remove_nth_allocation_meta (ctx->query, ctx_index);
|
|
}
|
|
}
|
|
|
|
/* Finally, cleanup metas from the stored query that aren't support on this
|
|
* pad. */
|
|
count = gst_query_get_n_allocation_metas (ctx->query);
|
|
for (i = 0; i < count;) {
|
|
GType api = gst_query_parse_nth_allocation_meta (ctx->query, i, NULL);
|
|
|
|
if (!gst_query_find_allocation_meta (query, api, NULL)) {
|
|
GST_DEBUG_OBJECT (ctx->tee, "Dropping allocation meta %s",
|
|
g_type_name (api));
|
|
gst_query_remove_nth_allocation_meta (ctx->query, i);
|
|
count--;
|
|
continue;
|
|
}
|
|
|
|
i++;
|
|
}
|
|
|
|
ctx->first_query = FALSE;
|
|
ctx->num_pads++;
|
|
gst_query_unref (query);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
|
|
static void
|
|
gst_tee_clear_query_allocation_meta (GstQuery * query)
|
|
{
|
|
guint count = gst_query_get_n_allocation_metas (query);
|
|
guint i;
|
|
|
|
for (i = 1; i <= count; i++)
|
|
gst_query_remove_nth_allocation_meta (query, count - i);
|
|
}
|
|
|
|
static gboolean
|
|
gst_tee_sink_query (GstPad * pad, GstObject * parent, GstQuery * query)
|
|
{
|
|
GstTee *tee = GST_TEE (parent);
|
|
gboolean res;
|
|
|
|
switch (GST_QUERY_TYPE (query)) {
|
|
case GST_QUERY_ALLOCATION:
|
|
{
|
|
GstIterator *iter;
|
|
GValue ret = G_VALUE_INIT;
|
|
struct AllocQueryCtx ctx = { tee, query, };
|
|
|
|
g_value_init (&ret, G_TYPE_BOOLEAN);
|
|
g_value_set_boolean (&ret, TRUE);
|
|
|
|
ctx.first_query = TRUE;
|
|
gst_allocation_params_init (&ctx.params);
|
|
|
|
iter = gst_element_iterate_src_pads (GST_ELEMENT (tee));
|
|
while (GST_ITERATOR_RESYNC ==
|
|
gst_iterator_fold (iter, gst_tee_query_allocation, &ret, &ctx)) {
|
|
gst_iterator_resync (iter);
|
|
ctx.first_query = TRUE;
|
|
gst_allocation_params_init (&ctx.params);
|
|
ctx.size = 0;
|
|
ctx.min_buffers = 0;
|
|
ctx.num_pads = 0;
|
|
gst_tee_clear_query_allocation_meta (query);
|
|
}
|
|
|
|
gst_iterator_free (iter);
|
|
res = g_value_get_boolean (&ret);
|
|
g_value_unset (&ret);
|
|
|
|
if (res) {
|
|
GST_DEBUG_OBJECT (tee, "Aggregated AllocationParams to align=%"
|
|
G_GSIZE_FORMAT " prefix=%" G_GSIZE_FORMAT " padding=%"
|
|
G_GSIZE_FORMAT, ctx.params.align, ctx.params.prefix,
|
|
ctx.params.padding);
|
|
|
|
GST_DEBUG_OBJECT (tee,
|
|
"Aggregated allocation pools size=%u min_buffers=%u", ctx.size,
|
|
ctx.min_buffers);
|
|
|
|
#ifndef GST_DISABLE_GST_DEBUG
|
|
{
|
|
guint count = gst_query_get_n_allocation_metas (query);
|
|
guint i;
|
|
|
|
GST_DEBUG_OBJECT (tee, "Aggregated %u allocation meta:", count);
|
|
|
|
for (i = 0; i < count; i++)
|
|
GST_DEBUG_OBJECT (tee, " + aggregated allocation meta %s",
|
|
g_type_name (gst_query_parse_nth_allocation_meta (ctx.query, i,
|
|
NULL)));
|
|
}
|
|
#endif
|
|
|
|
/* Allocate one more buffers when multiplexing so we don't starve the
|
|
* downstream threads. */
|
|
if (ctx.num_pads > 1)
|
|
ctx.min_buffers++;
|
|
|
|
/* Check that we actually have parameters besides the defaults. */
|
|
if (ctx.params.align || ctx.params.prefix || ctx.params.padding) {
|
|
gst_query_add_allocation_param (ctx.query, NULL, &ctx.params);
|
|
}
|
|
/* When size == 0, buffers created from this pool would have no memory
|
|
* allocated. */
|
|
if (ctx.size) {
|
|
gst_query_add_allocation_pool (ctx.query, NULL, ctx.size,
|
|
ctx.min_buffers, 0);
|
|
}
|
|
} else {
|
|
gst_tee_clear_query_allocation_meta (query);
|
|
}
|
|
break;
|
|
}
|
|
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);
|
|
|
|
/* Keep another ref around, a pad probe
|
|
* might release and destroy the pad */
|
|
gst_object_ref (pad);
|
|
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));
|
|
}
|
|
|
|
if (GST_TEE_PAD_CAST (pad)->removed)
|
|
ret = GST_FLOW_NOT_LINKED;
|
|
|
|
if (ret == GST_FLOW_NOT_LINKED && tee->allow_not_linked) {
|
|
ret = GST_FLOW_OK;
|
|
}
|
|
|
|
gst_object_unref (pad);
|
|
|
|
return ret;
|
|
}
|
|
|
|
/* mark all pads as 'not pushed on yet' */
|
|
g_list_foreach (pads, (GFunc) clear_pads, tee);
|
|
|
|
restart:
|
|
if (tee->allow_not_linked) {
|
|
cret = GST_FLOW_OK;
|
|
} else {
|
|
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 (pad, "Starting to push %s %p",
|
|
is_list ? "list" : "buffer", data);
|
|
|
|
ret = gst_tee_do_push (tee, pad, data, is_list);
|
|
|
|
GST_LOG_OBJECT (pad, "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);
|
|
pad = NULL;
|
|
} else {
|
|
/* already pushed, use previous return value */
|
|
ret = GST_TEE_PAD_CAST (pad)->result;
|
|
GST_LOG_OBJECT (pad, "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:
|
|
{
|
|
if (tee->allow_not_linked) {
|
|
GST_DEBUG_OBJECT (tee, "there are no pads, dropping %s",
|
|
is_list ? "buffer-list" : "buffer");
|
|
ret = GST_FLOW_OK;
|
|
} else {
|
|
GST_DEBUG_OBJECT (tee, "there are no pads, return not-linked");
|
|
ret = GST_FLOW_NOT_LINKED;
|
|
}
|
|
goto end;
|
|
}
|
|
error:
|
|
{
|
|
GST_DEBUG_OBJECT (tee, "received error %s", gst_flow_get_name (ret));
|
|
goto end;
|
|
}
|
|
end:
|
|
{
|
|
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));
|
|
while (gst_iterator_foreach (iter,
|
|
(GstIteratorForeachFunction) gst_tee_push_eos,
|
|
tee) == GST_ITERATOR_RESYNC)
|
|
gst_iterator_resync (iter);
|
|
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;
|
|
}
|