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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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943 lines
31 KiB
C
943 lines
31 KiB
C
/* GStreamer
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* Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
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* 2000 Wim Taymans <wtay@chello.be>
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* 2005 Wim Taymans <wim@fluendo.com>
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*
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* gstidentity.c:
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 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-identity
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*
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* Dummy element that passes incoming data through unmodified. It has some
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* useful diagnostic functions, such as offset and timestamp checking.
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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 <stdlib.h>
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#include <string.h>
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#include "gstelements_private.h"
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#include "../../gst/gst-i18n-lib.h"
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#include "gstidentity.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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static GstStaticPadTemplate srctemplate = GST_STATIC_PAD_TEMPLATE ("src",
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GST_PAD_SRC,
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GST_PAD_ALWAYS,
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GST_STATIC_CAPS_ANY);
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GST_DEBUG_CATEGORY_STATIC (gst_identity_debug);
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#define GST_CAT_DEFAULT gst_identity_debug
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/* Identity signals and args */
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enum
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{
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SIGNAL_HANDOFF,
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/* FILL ME */
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LAST_SIGNAL
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};
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#define DEFAULT_SLEEP_TIME 0
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#define DEFAULT_DUPLICATE 1
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#define DEFAULT_ERROR_AFTER -1
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#define DEFAULT_DROP_PROBABILITY 0.0
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#define DEFAULT_DROP_BUFFER_FLAGS 0
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#define DEFAULT_DATARATE 0
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#define DEFAULT_SILENT TRUE
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#define DEFAULT_SINGLE_SEGMENT FALSE
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#define DEFAULT_DUMP FALSE
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#define DEFAULT_SYNC FALSE
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#define DEFAULT_CHECK_IMPERFECT_TIMESTAMP FALSE
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#define DEFAULT_CHECK_IMPERFECT_OFFSET FALSE
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#define DEFAULT_SIGNAL_HANDOFFS TRUE
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enum
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{
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PROP_0,
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PROP_SLEEP_TIME,
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PROP_ERROR_AFTER,
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PROP_DROP_PROBABILITY,
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PROP_DROP_BUFFER_FLAGS,
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PROP_DATARATE,
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PROP_SILENT,
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PROP_SINGLE_SEGMENT,
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PROP_LAST_MESSAGE,
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PROP_DUMP,
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PROP_SYNC,
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PROP_CHECK_IMPERFECT_TIMESTAMP,
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PROP_CHECK_IMPERFECT_OFFSET,
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PROP_SIGNAL_HANDOFFS
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};
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#define _do_init \
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GST_DEBUG_CATEGORY_INIT (gst_identity_debug, "identity", 0, "identity element");
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#define gst_identity_parent_class parent_class
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G_DEFINE_TYPE_WITH_CODE (GstIdentity, gst_identity, GST_TYPE_BASE_TRANSFORM,
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_do_init);
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static void gst_identity_finalize (GObject * object);
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static void gst_identity_set_property (GObject * object, guint prop_id,
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const GValue * value, GParamSpec * pspec);
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static void gst_identity_get_property (GObject * object, guint prop_id,
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GValue * value, GParamSpec * pspec);
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static gboolean gst_identity_sink_event (GstBaseTransform * trans,
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GstEvent * event);
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static GstFlowReturn gst_identity_transform_ip (GstBaseTransform * trans,
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GstBuffer * buf);
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static gboolean gst_identity_start (GstBaseTransform * trans);
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static gboolean gst_identity_stop (GstBaseTransform * trans);
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static GstStateChangeReturn gst_identity_change_state (GstElement * element,
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GstStateChange transition);
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static gboolean gst_identity_accept_caps (GstBaseTransform * base,
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GstPadDirection direction, GstCaps * caps);
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static gboolean gst_identity_query (GstBaseTransform * base,
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GstPadDirection direction, GstQuery * query);
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static guint gst_identity_signals[LAST_SIGNAL] = { 0 };
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static GParamSpec *pspec_last_message = NULL;
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static void
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gst_identity_finalize (GObject * object)
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{
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GstIdentity *identity;
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identity = GST_IDENTITY (object);
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g_free (identity->last_message);
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g_cond_clear (&identity->blocked_cond);
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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_identity_class_init (GstIdentityClass * klass)
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{
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GObjectClass *gobject_class;
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GstElementClass *gstelement_class;
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GstBaseTransformClass *gstbasetrans_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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gstbasetrans_class = GST_BASE_TRANSFORM_CLASS (klass);
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gobject_class->set_property = gst_identity_set_property;
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gobject_class->get_property = gst_identity_get_property;
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g_object_class_install_property (gobject_class, PROP_SLEEP_TIME,
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g_param_spec_uint ("sleep-time", "Sleep time",
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"Microseconds to sleep between processing", 0, G_MAXUINT,
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DEFAULT_SLEEP_TIME, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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g_object_class_install_property (gobject_class, PROP_ERROR_AFTER,
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g_param_spec_int ("error-after", "Error After", "Error after N buffers",
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G_MININT, G_MAXINT, DEFAULT_ERROR_AFTER,
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G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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g_object_class_install_property (gobject_class, PROP_DROP_PROBABILITY,
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g_param_spec_float ("drop-probability", "Drop Probability",
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"The Probability a buffer is dropped", 0.0, 1.0,
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DEFAULT_DROP_PROBABILITY,
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G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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/**
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* GstIdentity:drop-buffer-flags:
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*
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* Drop buffers with the given flags.
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*
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* Since: 1.8
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**/
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g_object_class_install_property (gobject_class, PROP_DROP_BUFFER_FLAGS,
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g_param_spec_flags ("drop-buffer-flags", "Check flags to drop buffers",
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"Drop buffers with the given flags",
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GST_TYPE_BUFFER_FLAGS, DEFAULT_DROP_BUFFER_FLAGS,
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G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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g_object_class_install_property (gobject_class, PROP_DATARATE,
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g_param_spec_int ("datarate", "Datarate",
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"(Re)timestamps buffers with number of bytes per second (0 = inactive)",
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0, G_MAXINT, DEFAULT_DATARATE,
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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", "silent", DEFAULT_SILENT,
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G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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g_object_class_install_property (gobject_class, PROP_SINGLE_SEGMENT,
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g_param_spec_boolean ("single-segment", "Single Segment",
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"Timestamp buffers and eat segments so as to appear as one segment",
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DEFAULT_SINGLE_SEGMENT, 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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"last-message", NULL, 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_DUMP,
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g_param_spec_boolean ("dump", "Dump", "Dump buffer contents to stdout",
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DEFAULT_DUMP, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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g_object_class_install_property (gobject_class, PROP_SYNC,
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g_param_spec_boolean ("sync", "Synchronize",
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"Synchronize to pipeline clock", DEFAULT_SYNC,
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G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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g_object_class_install_property (gobject_class,
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PROP_CHECK_IMPERFECT_TIMESTAMP,
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g_param_spec_boolean ("check-imperfect-timestamp",
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"Check for discontiguous timestamps",
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"Send element messages if timestamps and durations do not match up",
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DEFAULT_CHECK_IMPERFECT_TIMESTAMP,
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G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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g_object_class_install_property (gobject_class, PROP_CHECK_IMPERFECT_OFFSET,
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g_param_spec_boolean ("check-imperfect-offset",
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"Check for discontiguous offset",
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"Send element messages if offset and offset_end do not match up",
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DEFAULT_CHECK_IMPERFECT_OFFSET,
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G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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/**
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* GstIdentity:signal-handoffs
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*
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* If set to #TRUE, the identity will emit a handoff signal when handling a buffer.
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* When set to #FALSE, no signal will be emitted, which might improve performance.
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*/
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g_object_class_install_property (gobject_class, PROP_SIGNAL_HANDOFFS,
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g_param_spec_boolean ("signal-handoffs",
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"Signal handoffs", "Send a signal before pushing the buffer",
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DEFAULT_SIGNAL_HANDOFFS, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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/**
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* GstIdentity::handoff:
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* @identity: the identity instance
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* @buffer: the buffer that just has been received
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* @pad: the pad that received it
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*
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* This signal gets emitted before passing the buffer downstream.
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*/
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gst_identity_signals[SIGNAL_HANDOFF] =
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g_signal_new ("handoff", G_TYPE_FROM_CLASS (klass), G_SIGNAL_RUN_LAST,
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G_STRUCT_OFFSET (GstIdentityClass, handoff), NULL, NULL,
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g_cclosure_marshal_generic, G_TYPE_NONE, 1,
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GST_TYPE_BUFFER | G_SIGNAL_TYPE_STATIC_SCOPE);
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gobject_class->finalize = gst_identity_finalize;
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gst_element_class_set_static_metadata (gstelement_class,
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"Identity",
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"Generic",
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"Pass data without modification", "Erik Walthinsen <omega@cse.ogi.edu>");
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gst_element_class_add_static_pad_template (gstelement_class, &srctemplate);
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gst_element_class_add_static_pad_template (gstelement_class, &sinktemplate);
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gstelement_class->change_state =
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GST_DEBUG_FUNCPTR (gst_identity_change_state);
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gstbasetrans_class->sink_event = GST_DEBUG_FUNCPTR (gst_identity_sink_event);
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gstbasetrans_class->transform_ip =
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GST_DEBUG_FUNCPTR (gst_identity_transform_ip);
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gstbasetrans_class->start = GST_DEBUG_FUNCPTR (gst_identity_start);
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gstbasetrans_class->stop = GST_DEBUG_FUNCPTR (gst_identity_stop);
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gstbasetrans_class->accept_caps =
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GST_DEBUG_FUNCPTR (gst_identity_accept_caps);
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gstbasetrans_class->query = gst_identity_query;
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}
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static void
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gst_identity_init (GstIdentity * identity)
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{
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identity->sleep_time = DEFAULT_SLEEP_TIME;
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identity->error_after = DEFAULT_ERROR_AFTER;
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identity->drop_probability = DEFAULT_DROP_PROBABILITY;
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identity->drop_buffer_flags = DEFAULT_DROP_BUFFER_FLAGS;
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identity->datarate = DEFAULT_DATARATE;
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identity->silent = DEFAULT_SILENT;
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identity->single_segment = DEFAULT_SINGLE_SEGMENT;
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identity->sync = DEFAULT_SYNC;
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identity->check_imperfect_timestamp = DEFAULT_CHECK_IMPERFECT_TIMESTAMP;
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identity->check_imperfect_offset = DEFAULT_CHECK_IMPERFECT_OFFSET;
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identity->dump = DEFAULT_DUMP;
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identity->last_message = NULL;
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identity->signal_handoffs = DEFAULT_SIGNAL_HANDOFFS;
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g_cond_init (&identity->blocked_cond);
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gst_base_transform_set_gap_aware (GST_BASE_TRANSFORM_CAST (identity), TRUE);
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}
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static void
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gst_identity_notify_last_message (GstIdentity * identity)
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{
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g_object_notify_by_pspec ((GObject *) identity, pspec_last_message);
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}
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static GstFlowReturn
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gst_identity_do_sync (GstIdentity * identity, GstClockTime running_time)
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{
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GstFlowReturn ret = GST_FLOW_OK;
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if (identity->sync &&
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GST_BASE_TRANSFORM_CAST (identity)->segment.format == GST_FORMAT_TIME) {
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GstClock *clock;
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GST_OBJECT_LOCK (identity);
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while (identity->blocked)
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g_cond_wait (&identity->blocked_cond, GST_OBJECT_GET_LOCK (identity));
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if ((clock = GST_ELEMENT (identity)->clock)) {
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GstClockReturn cret;
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GstClockTime timestamp;
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timestamp = running_time + GST_ELEMENT (identity)->base_time +
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identity->upstream_latency;
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/* save id if we need to unlock */
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identity->clock_id = gst_clock_new_single_shot_id (clock, timestamp);
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GST_OBJECT_UNLOCK (identity);
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cret = gst_clock_id_wait (identity->clock_id, NULL);
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GST_OBJECT_LOCK (identity);
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if (identity->clock_id) {
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gst_clock_id_unref (identity->clock_id);
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identity->clock_id = NULL;
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}
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if (cret == GST_CLOCK_UNSCHEDULED)
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ret = GST_FLOW_EOS;
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}
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GST_OBJECT_UNLOCK (identity);
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}
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return ret;
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}
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static gboolean
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gst_identity_sink_event (GstBaseTransform * trans, GstEvent * event)
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{
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GstIdentity *identity;
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gboolean ret = TRUE;
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identity = GST_IDENTITY (trans);
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if (!identity->silent) {
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const GstStructure *s;
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const gchar *tstr;
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gchar *sstr;
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GST_OBJECT_LOCK (identity);
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g_free (identity->last_message);
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tstr = gst_event_type_get_name (GST_EVENT_TYPE (event));
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if ((s = gst_event_get_structure (event)))
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sstr = gst_structure_to_string (s);
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else
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sstr = g_strdup ("");
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identity->last_message =
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g_strdup_printf ("event ******* (%s:%s) E (type: %s (%d), %s) %p",
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GST_DEBUG_PAD_NAME (trans->sinkpad), tstr, GST_EVENT_TYPE (event),
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sstr, event);
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g_free (sstr);
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GST_OBJECT_UNLOCK (identity);
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gst_identity_notify_last_message (identity);
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}
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if (identity->single_segment && (GST_EVENT_TYPE (event) == GST_EVENT_SEGMENT)) {
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if (!trans->have_segment) {
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GstEvent *news;
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GstSegment segment;
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gst_event_copy_segment (event, &segment);
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gst_event_copy_segment (event, &trans->segment);
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trans->have_segment = TRUE;
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/* This is the first segment, send out a (0, -1) segment */
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gst_segment_init (&segment, segment.format);
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news = gst_event_new_segment (&segment);
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gst_pad_event_default (trans->sinkpad, GST_OBJECT_CAST (trans), news);
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} else {
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/* need to track segment for proper running time */
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gst_event_copy_segment (event, &trans->segment);
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}
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}
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if (GST_EVENT_TYPE (event) == GST_EVENT_GAP &&
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trans->have_segment && trans->segment.format == GST_FORMAT_TIME) {
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GstClockTime start, dur;
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gst_event_parse_gap (event, &start, &dur);
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if (GST_CLOCK_TIME_IS_VALID (start)) {
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start = gst_segment_to_running_time (&trans->segment,
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GST_FORMAT_TIME, start);
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gst_identity_do_sync (identity, start);
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/* also transform GAP timestamp similar to buffer timestamps */
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if (identity->single_segment) {
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gst_event_unref (event);
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event = gst_event_new_gap (start, dur);
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}
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}
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}
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/* Reset previous timestamp, duration and offsets on SEGMENT
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* to prevent false warnings when checking for perfect streams */
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if (GST_EVENT_TYPE (event) == GST_EVENT_SEGMENT) {
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identity->prev_timestamp = identity->prev_duration = GST_CLOCK_TIME_NONE;
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identity->prev_offset = identity->prev_offset_end = GST_BUFFER_OFFSET_NONE;
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}
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if (identity->single_segment && GST_EVENT_TYPE (event) == GST_EVENT_SEGMENT) {
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/* eat up segments */
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gst_event_unref (event);
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ret = TRUE;
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} else {
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if (GST_EVENT_TYPE (event) == GST_EVENT_FLUSH_START) {
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GST_OBJECT_LOCK (identity);
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if (identity->clock_id) {
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GST_DEBUG_OBJECT (identity, "unlock clock wait");
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gst_clock_id_unschedule (identity->clock_id);
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}
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GST_OBJECT_UNLOCK (identity);
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}
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ret = GST_BASE_TRANSFORM_CLASS (parent_class)->sink_event (trans, event);
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}
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return ret;
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}
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static void
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gst_identity_check_imperfect_timestamp (GstIdentity * identity, GstBuffer * buf)
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{
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GstClockTime timestamp = GST_BUFFER_TIMESTAMP (buf);
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/* invalid timestamp drops us out of check. FIXME: maybe warn ? */
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if (timestamp != GST_CLOCK_TIME_NONE) {
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/* check if we had a previous buffer to compare to */
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if (identity->prev_timestamp != GST_CLOCK_TIME_NONE &&
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identity->prev_duration != GST_CLOCK_TIME_NONE) {
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GstClockTime t_expected;
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GstClockTimeDiff dt;
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t_expected = identity->prev_timestamp + identity->prev_duration;
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dt = GST_CLOCK_DIFF (t_expected, timestamp);
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if (dt != 0) {
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/*
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* "imperfect-timestamp" bus message:
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* @identity: the identity instance
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* @delta: the GST_CLOCK_DIFF to the prev timestamp
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* @prev-timestamp: the previous buffer timestamp
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* @prev-duration: the previous buffer duration
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* @prev-offset: the previous buffer offset
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* @prev-offset-end: the previous buffer offset end
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* @cur-timestamp: the current buffer timestamp
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* @cur-duration: the current buffer duration
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* @cur-offset: the current buffer offset
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* @cur-offset-end: the current buffer offset end
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*
|
|
* This bus message gets emitted if the check-imperfect-timestamp
|
|
* property is set and there is a gap in time between the
|
|
* last buffer and the newly received buffer.
|
|
*/
|
|
gst_element_post_message (GST_ELEMENT (identity),
|
|
gst_message_new_element (GST_OBJECT (identity),
|
|
gst_structure_new ("imperfect-timestamp",
|
|
"delta", G_TYPE_INT64, dt,
|
|
"prev-timestamp", G_TYPE_UINT64,
|
|
identity->prev_timestamp, "prev-duration", G_TYPE_UINT64,
|
|
identity->prev_duration, "prev-offset", G_TYPE_UINT64,
|
|
identity->prev_offset, "prev-offset-end", G_TYPE_UINT64,
|
|
identity->prev_offset_end, "cur-timestamp", G_TYPE_UINT64,
|
|
timestamp, "cur-duration", G_TYPE_UINT64,
|
|
GST_BUFFER_DURATION (buf), "cur-offset", G_TYPE_UINT64,
|
|
GST_BUFFER_OFFSET (buf), "cur-offset-end", G_TYPE_UINT64,
|
|
GST_BUFFER_OFFSET_END (buf), NULL)));
|
|
}
|
|
} else {
|
|
GST_DEBUG_OBJECT (identity, "can't check data-contiguity, no "
|
|
"offset_end was set on previous buffer");
|
|
}
|
|
}
|
|
}
|
|
|
|
static void
|
|
gst_identity_check_imperfect_offset (GstIdentity * identity, GstBuffer * buf)
|
|
{
|
|
guint64 offset;
|
|
|
|
offset = GST_BUFFER_OFFSET (buf);
|
|
|
|
if (identity->prev_offset_end != offset &&
|
|
identity->prev_offset_end != GST_BUFFER_OFFSET_NONE &&
|
|
offset != GST_BUFFER_OFFSET_NONE) {
|
|
/*
|
|
* "imperfect-offset" bus message:
|
|
* @identity: the identity instance
|
|
* @prev-timestamp: the previous buffer timestamp
|
|
* @prev-duration: the previous buffer duration
|
|
* @prev-offset: the previous buffer offset
|
|
* @prev-offset-end: the previous buffer offset end
|
|
* @cur-timestamp: the current buffer timestamp
|
|
* @cur-duration: the current buffer duration
|
|
* @cur-offset: the current buffer offset
|
|
* @cur-offset-end: the current buffer offset end
|
|
*
|
|
* This bus message gets emitted if the check-imperfect-offset
|
|
* property is set and there is a gap in offsets between the
|
|
* last buffer and the newly received buffer.
|
|
*/
|
|
gst_element_post_message (GST_ELEMENT (identity),
|
|
gst_message_new_element (GST_OBJECT (identity),
|
|
gst_structure_new ("imperfect-offset", "prev-timestamp",
|
|
G_TYPE_UINT64, identity->prev_timestamp, "prev-duration",
|
|
G_TYPE_UINT64, identity->prev_duration, "prev-offset",
|
|
G_TYPE_UINT64, identity->prev_offset, "prev-offset-end",
|
|
G_TYPE_UINT64, identity->prev_offset_end, "cur-timestamp",
|
|
G_TYPE_UINT64, GST_BUFFER_TIMESTAMP (buf), "cur-duration",
|
|
G_TYPE_UINT64, GST_BUFFER_DURATION (buf), "cur-offset",
|
|
G_TYPE_UINT64, GST_BUFFER_OFFSET (buf), "cur-offset-end",
|
|
G_TYPE_UINT64, GST_BUFFER_OFFSET_END (buf), NULL)));
|
|
} else {
|
|
GST_DEBUG_OBJECT (identity, "can't check offset contiguity, no offset "
|
|
"and/or offset_end were set on previous buffer");
|
|
}
|
|
}
|
|
|
|
static const gchar *
|
|
print_pretty_time (gchar * ts_str, gsize ts_str_len, GstClockTime ts)
|
|
{
|
|
if (ts == GST_CLOCK_TIME_NONE)
|
|
return "none";
|
|
|
|
g_snprintf (ts_str, ts_str_len, "%" GST_TIME_FORMAT, GST_TIME_ARGS (ts));
|
|
return ts_str;
|
|
}
|
|
|
|
static void
|
|
gst_identity_update_last_message_for_buffer (GstIdentity * identity,
|
|
const gchar * action, GstBuffer * buf, gsize size)
|
|
{
|
|
gchar dts_str[64], pts_str[64], dur_str[64];
|
|
gchar *flag_str;
|
|
|
|
GST_OBJECT_LOCK (identity);
|
|
|
|
flag_str = gst_buffer_get_flags_string (buf);
|
|
|
|
g_free (identity->last_message);
|
|
identity->last_message = g_strdup_printf ("%s ******* (%s:%s) "
|
|
"(%" G_GSIZE_FORMAT " bytes, dts: %s, pts: %s, duration: %s, offset: %"
|
|
G_GINT64_FORMAT ", " "offset_end: % " G_GINT64_FORMAT
|
|
", flags: %08x %s) %p", action,
|
|
GST_DEBUG_PAD_NAME (GST_BASE_TRANSFORM_CAST (identity)->sinkpad), size,
|
|
print_pretty_time (dts_str, sizeof (dts_str), GST_BUFFER_DTS (buf)),
|
|
print_pretty_time (pts_str, sizeof (pts_str), GST_BUFFER_PTS (buf)),
|
|
print_pretty_time (dur_str, sizeof (dur_str), GST_BUFFER_DURATION (buf)),
|
|
GST_BUFFER_OFFSET (buf), GST_BUFFER_OFFSET_END (buf),
|
|
GST_BUFFER_FLAGS (buf), flag_str, buf);
|
|
g_free (flag_str);
|
|
|
|
GST_OBJECT_UNLOCK (identity);
|
|
|
|
gst_identity_notify_last_message (identity);
|
|
}
|
|
|
|
static GstFlowReturn
|
|
gst_identity_transform_ip (GstBaseTransform * trans, GstBuffer * buf)
|
|
{
|
|
GstFlowReturn ret = GST_FLOW_OK;
|
|
GstIdentity *identity = GST_IDENTITY (trans);
|
|
GstClockTime rundts = GST_CLOCK_TIME_NONE;
|
|
GstClockTime runpts = GST_CLOCK_TIME_NONE;
|
|
GstClockTime ts, duration, runtimestamp;
|
|
gsize size;
|
|
|
|
size = gst_buffer_get_size (buf);
|
|
|
|
if (identity->check_imperfect_timestamp)
|
|
gst_identity_check_imperfect_timestamp (identity, buf);
|
|
if (identity->check_imperfect_offset)
|
|
gst_identity_check_imperfect_offset (identity, buf);
|
|
|
|
/* update prev values */
|
|
identity->prev_timestamp = GST_BUFFER_TIMESTAMP (buf);
|
|
identity->prev_duration = GST_BUFFER_DURATION (buf);
|
|
identity->prev_offset_end = GST_BUFFER_OFFSET_END (buf);
|
|
identity->prev_offset = GST_BUFFER_OFFSET (buf);
|
|
|
|
if (identity->error_after >= 0) {
|
|
identity->error_after--;
|
|
if (identity->error_after == 0)
|
|
goto error_after;
|
|
}
|
|
|
|
if (identity->drop_probability > 0.0) {
|
|
if ((gfloat) (1.0 * rand () / (RAND_MAX)) < identity->drop_probability)
|
|
goto dropped;
|
|
}
|
|
|
|
if (GST_BUFFER_FLAG_IS_SET (buf, identity->drop_buffer_flags))
|
|
goto dropped;
|
|
|
|
if (identity->dump) {
|
|
GstMapInfo info;
|
|
|
|
if (gst_buffer_map (buf, &info, GST_MAP_READ)) {
|
|
gst_util_dump_mem (info.data, info.size);
|
|
gst_buffer_unmap (buf, &info);
|
|
}
|
|
}
|
|
|
|
if (!identity->silent) {
|
|
gst_identity_update_last_message_for_buffer (identity, "chain", buf, size);
|
|
}
|
|
|
|
if (identity->datarate > 0) {
|
|
GstClockTime time = gst_util_uint64_scale_int (identity->offset,
|
|
GST_SECOND, identity->datarate);
|
|
|
|
GST_BUFFER_PTS (buf) = GST_BUFFER_DTS (buf) = time;
|
|
GST_BUFFER_DURATION (buf) = size * GST_SECOND / identity->datarate;
|
|
}
|
|
|
|
if (identity->signal_handoffs)
|
|
g_signal_emit (identity, gst_identity_signals[SIGNAL_HANDOFF], 0, buf);
|
|
|
|
if (trans->segment.format == GST_FORMAT_TIME) {
|
|
rundts = gst_segment_to_running_time (&trans->segment,
|
|
GST_FORMAT_TIME, GST_BUFFER_DTS (buf));
|
|
runpts = gst_segment_to_running_time (&trans->segment,
|
|
GST_FORMAT_TIME, GST_BUFFER_PTS (buf));
|
|
}
|
|
|
|
if (GST_CLOCK_TIME_IS_VALID (rundts))
|
|
runtimestamp = rundts;
|
|
else if (GST_CLOCK_TIME_IS_VALID (runpts))
|
|
runtimestamp = runpts;
|
|
else
|
|
runtimestamp = 0;
|
|
ret = gst_identity_do_sync (identity, runtimestamp);
|
|
|
|
identity->offset += size;
|
|
|
|
if (identity->sleep_time && ret == GST_FLOW_OK)
|
|
g_usleep (identity->sleep_time);
|
|
|
|
if (identity->single_segment && (trans->segment.format == GST_FORMAT_TIME)
|
|
&& (ret == GST_FLOW_OK)) {
|
|
GST_BUFFER_DTS (buf) = rundts;
|
|
GST_BUFFER_PTS (buf) = runpts;
|
|
GST_BUFFER_OFFSET (buf) = GST_CLOCK_TIME_NONE;
|
|
GST_BUFFER_OFFSET_END (buf) = GST_CLOCK_TIME_NONE;
|
|
}
|
|
|
|
return ret;
|
|
|
|
/* ERRORS */
|
|
error_after:
|
|
{
|
|
GST_ELEMENT_ERROR (identity, CORE, FAILED,
|
|
(_("Failed after iterations as requested.")), (NULL));
|
|
return GST_FLOW_ERROR;
|
|
}
|
|
dropped:
|
|
{
|
|
if (!identity->silent) {
|
|
gst_identity_update_last_message_for_buffer (identity, "dropping", buf,
|
|
size);
|
|
}
|
|
|
|
ts = GST_BUFFER_TIMESTAMP (buf);
|
|
if (GST_CLOCK_TIME_IS_VALID (ts)) {
|
|
duration = GST_BUFFER_DURATION (buf);
|
|
gst_pad_push_event (GST_BASE_TRANSFORM_SRC_PAD (identity),
|
|
gst_event_new_gap (ts, duration));
|
|
}
|
|
|
|
/* return DROPPED to basetransform. */
|
|
return GST_BASE_TRANSFORM_FLOW_DROPPED;
|
|
}
|
|
}
|
|
|
|
static void
|
|
gst_identity_set_property (GObject * object, guint prop_id,
|
|
const GValue * value, GParamSpec * pspec)
|
|
{
|
|
GstIdentity *identity;
|
|
|
|
identity = GST_IDENTITY (object);
|
|
|
|
switch (prop_id) {
|
|
case PROP_SLEEP_TIME:
|
|
identity->sleep_time = g_value_get_uint (value);
|
|
break;
|
|
case PROP_SILENT:
|
|
identity->silent = g_value_get_boolean (value);
|
|
break;
|
|
case PROP_SINGLE_SEGMENT:
|
|
identity->single_segment = g_value_get_boolean (value);
|
|
break;
|
|
case PROP_DUMP:
|
|
identity->dump = g_value_get_boolean (value);
|
|
break;
|
|
case PROP_ERROR_AFTER:
|
|
identity->error_after = g_value_get_int (value);
|
|
break;
|
|
case PROP_DROP_PROBABILITY:
|
|
identity->drop_probability = g_value_get_float (value);
|
|
break;
|
|
case PROP_DROP_BUFFER_FLAGS:
|
|
identity->drop_buffer_flags = g_value_get_flags (value);
|
|
break;
|
|
case PROP_DATARATE:
|
|
identity->datarate = g_value_get_int (value);
|
|
break;
|
|
case PROP_SYNC:
|
|
identity->sync = g_value_get_boolean (value);
|
|
break;
|
|
case PROP_CHECK_IMPERFECT_TIMESTAMP:
|
|
identity->check_imperfect_timestamp = g_value_get_boolean (value);
|
|
break;
|
|
case PROP_CHECK_IMPERFECT_OFFSET:
|
|
identity->check_imperfect_offset = g_value_get_boolean (value);
|
|
break;
|
|
case PROP_SIGNAL_HANDOFFS:
|
|
identity->signal_handoffs = g_value_get_boolean (value);
|
|
break;
|
|
default:
|
|
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
|
|
break;
|
|
}
|
|
if (identity->datarate > 0 || identity->single_segment)
|
|
gst_base_transform_set_passthrough (GST_BASE_TRANSFORM (identity), FALSE);
|
|
else
|
|
gst_base_transform_set_passthrough (GST_BASE_TRANSFORM (identity), TRUE);
|
|
}
|
|
|
|
static void
|
|
gst_identity_get_property (GObject * object, guint prop_id, GValue * value,
|
|
GParamSpec * pspec)
|
|
{
|
|
GstIdentity *identity;
|
|
|
|
identity = GST_IDENTITY (object);
|
|
|
|
switch (prop_id) {
|
|
case PROP_SLEEP_TIME:
|
|
g_value_set_uint (value, identity->sleep_time);
|
|
break;
|
|
case PROP_ERROR_AFTER:
|
|
g_value_set_int (value, identity->error_after);
|
|
break;
|
|
case PROP_DROP_PROBABILITY:
|
|
g_value_set_float (value, identity->drop_probability);
|
|
break;
|
|
case PROP_DROP_BUFFER_FLAGS:
|
|
g_value_set_flags (value, identity->drop_buffer_flags);
|
|
break;
|
|
case PROP_DATARATE:
|
|
g_value_set_int (value, identity->datarate);
|
|
break;
|
|
case PROP_SILENT:
|
|
g_value_set_boolean (value, identity->silent);
|
|
break;
|
|
case PROP_SINGLE_SEGMENT:
|
|
g_value_set_boolean (value, identity->single_segment);
|
|
break;
|
|
case PROP_DUMP:
|
|
g_value_set_boolean (value, identity->dump);
|
|
break;
|
|
case PROP_LAST_MESSAGE:
|
|
GST_OBJECT_LOCK (identity);
|
|
g_value_set_string (value, identity->last_message);
|
|
GST_OBJECT_UNLOCK (identity);
|
|
break;
|
|
case PROP_SYNC:
|
|
g_value_set_boolean (value, identity->sync);
|
|
break;
|
|
case PROP_CHECK_IMPERFECT_TIMESTAMP:
|
|
g_value_set_boolean (value, identity->check_imperfect_timestamp);
|
|
break;
|
|
case PROP_CHECK_IMPERFECT_OFFSET:
|
|
g_value_set_boolean (value, identity->check_imperfect_offset);
|
|
break;
|
|
case PROP_SIGNAL_HANDOFFS:
|
|
g_value_set_boolean (value, identity->signal_handoffs);
|
|
break;
|
|
default:
|
|
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static gboolean
|
|
gst_identity_start (GstBaseTransform * trans)
|
|
{
|
|
GstIdentity *identity;
|
|
|
|
identity = GST_IDENTITY (trans);
|
|
|
|
identity->offset = 0;
|
|
identity->prev_timestamp = GST_CLOCK_TIME_NONE;
|
|
identity->prev_duration = GST_CLOCK_TIME_NONE;
|
|
identity->prev_offset_end = GST_BUFFER_OFFSET_NONE;
|
|
identity->prev_offset = GST_BUFFER_OFFSET_NONE;
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static gboolean
|
|
gst_identity_stop (GstBaseTransform * trans)
|
|
{
|
|
GstIdentity *identity;
|
|
|
|
identity = GST_IDENTITY (trans);
|
|
|
|
GST_OBJECT_LOCK (identity);
|
|
g_free (identity->last_message);
|
|
identity->last_message = NULL;
|
|
GST_OBJECT_UNLOCK (identity);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static gboolean
|
|
gst_identity_accept_caps (GstBaseTransform * base,
|
|
GstPadDirection direction, GstCaps * caps)
|
|
{
|
|
gboolean ret;
|
|
GstPad *pad;
|
|
|
|
/* Proxy accept-caps */
|
|
|
|
if (direction == GST_PAD_SRC)
|
|
pad = GST_BASE_TRANSFORM_SINK_PAD (base);
|
|
else
|
|
pad = GST_BASE_TRANSFORM_SRC_PAD (base);
|
|
|
|
ret = gst_pad_peer_query_accept_caps (pad, caps);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static gboolean
|
|
gst_identity_query (GstBaseTransform * base, GstPadDirection direction,
|
|
GstQuery * query)
|
|
{
|
|
GstIdentity *identity;
|
|
gboolean ret;
|
|
|
|
identity = GST_IDENTITY (base);
|
|
|
|
ret = GST_BASE_TRANSFORM_CLASS (parent_class)->query (base, direction, query);
|
|
|
|
if (GST_QUERY_TYPE (query) == GST_QUERY_LATENCY) {
|
|
gboolean live = FALSE;
|
|
GstClockTime min = 0, max = 0;
|
|
|
|
if (ret) {
|
|
gst_query_parse_latency (query, &live, &min, &max);
|
|
|
|
if (identity->sync && max < min) {
|
|
GST_ELEMENT_WARNING (base, CORE, CLOCK, (NULL),
|
|
("Impossible to configure latency before identity sync=true:"
|
|
" max %" GST_TIME_FORMAT " < min %"
|
|
GST_TIME_FORMAT ". Add queues or other buffering elements.",
|
|
GST_TIME_ARGS (max), GST_TIME_ARGS (min)));
|
|
}
|
|
}
|
|
|
|
/* Ignore the upstream latency if it is not live */
|
|
GST_OBJECT_LOCK (identity);
|
|
if (live)
|
|
identity->upstream_latency = min;
|
|
else
|
|
identity->upstream_latency = 0;
|
|
GST_OBJECT_UNLOCK (identity);
|
|
|
|
gst_query_set_latency (query, live || identity->sync, min, max);
|
|
ret = TRUE;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
static GstStateChangeReturn
|
|
gst_identity_change_state (GstElement * element, GstStateChange transition)
|
|
{
|
|
GstStateChangeReturn ret;
|
|
GstIdentity *identity = GST_IDENTITY (element);
|
|
gboolean no_preroll = FALSE;
|
|
|
|
switch (transition) {
|
|
case GST_STATE_CHANGE_NULL_TO_READY:
|
|
break;
|
|
case GST_STATE_CHANGE_READY_TO_PAUSED:
|
|
GST_OBJECT_LOCK (identity);
|
|
identity->blocked = TRUE;
|
|
GST_OBJECT_UNLOCK (identity);
|
|
if (identity->sync)
|
|
no_preroll = TRUE;
|
|
break;
|
|
case GST_STATE_CHANGE_PAUSED_TO_PLAYING:
|
|
GST_OBJECT_LOCK (identity);
|
|
identity->blocked = FALSE;
|
|
g_cond_broadcast (&identity->blocked_cond);
|
|
GST_OBJECT_UNLOCK (identity);
|
|
break;
|
|
case GST_STATE_CHANGE_PAUSED_TO_READY:
|
|
GST_OBJECT_LOCK (identity);
|
|
if (identity->clock_id) {
|
|
GST_DEBUG_OBJECT (identity, "unlock clock wait");
|
|
gst_clock_id_unschedule (identity->clock_id);
|
|
}
|
|
identity->blocked = FALSE;
|
|
g_cond_broadcast (&identity->blocked_cond);
|
|
GST_OBJECT_UNLOCK (identity);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
|
|
|
|
switch (transition) {
|
|
case GST_STATE_CHANGE_PLAYING_TO_PAUSED:
|
|
GST_OBJECT_LOCK (identity);
|
|
identity->upstream_latency = 0;
|
|
identity->blocked = TRUE;
|
|
GST_OBJECT_UNLOCK (identity);
|
|
if (identity->sync)
|
|
no_preroll = TRUE;
|
|
break;
|
|
case GST_STATE_CHANGE_PAUSED_TO_READY:
|
|
break;
|
|
case GST_STATE_CHANGE_READY_TO_NULL:
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
if (no_preroll && ret == GST_STATE_CHANGE_SUCCESS)
|
|
ret = GST_STATE_CHANGE_NO_PREROLL;
|
|
|
|
return ret;
|
|
}
|