mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-12-04 23:46:43 +00:00
423 lines
12 KiB
C
423 lines
12 KiB
C
/* GStreamer
|
|
* Copyright (C) 2013 Rdio <ingestions@rdio.com>
|
|
* Copyright (C) 2013 David Schleef <ds@schleef.org>
|
|
*
|
|
* This library is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Library General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2 of the License, or (at your option) any later version.
|
|
*
|
|
* This library is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* Library General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Library General Public
|
|
* License along with this library; if not, write to the
|
|
* Free Software Foundation, Inc., 51 Franklin Street, Suite 500,
|
|
* Boston, MA 02110-1335, USA.
|
|
*/
|
|
/**
|
|
* SECTION:element-watchdog
|
|
* @title: watchdog
|
|
*
|
|
* The watchdog element watches buffers and events flowing through
|
|
* a pipeline. If no buffers are seen for a configurable amount of
|
|
* time, a error message is sent to the bus.
|
|
*
|
|
* To use this element, insert it into a pipeline as you would an
|
|
* identity element. Once activated, any pause in the flow of
|
|
* buffers through the element will cause an element error. The
|
|
* maximum allowed pause is determined by the timeout property.
|
|
*
|
|
* This element is currently intended for transcoding pipelines,
|
|
* although may be useful in other contexts.
|
|
*
|
|
* ## Example launch line
|
|
* |[
|
|
* gst-launch-1.0 -v fakesrc ! watchdog ! fakesink
|
|
* ]|
|
|
*
|
|
*/
|
|
|
|
#ifdef HAVE_CONFIG_H
|
|
#include "config.h"
|
|
#endif
|
|
|
|
#include <gst/gst.h>
|
|
#include <gst/base/gstbasetransform.h>
|
|
#include "gstdebugutilsbadelements.h"
|
|
#include "gstwatchdog.h"
|
|
|
|
GST_DEBUG_CATEGORY_STATIC (gst_watchdog_debug_category);
|
|
#define GST_CAT_DEFAULT gst_watchdog_debug_category
|
|
|
|
/* prototypes */
|
|
|
|
static void gst_watchdog_set_property (GObject * object,
|
|
guint property_id, const GValue * value, GParamSpec * pspec);
|
|
static void gst_watchdog_get_property (GObject * object,
|
|
guint property_id, GValue * value, GParamSpec * pspec);
|
|
|
|
static gboolean gst_watchdog_start (GstBaseTransform * trans);
|
|
static gboolean gst_watchdog_stop (GstBaseTransform * trans);
|
|
static gboolean gst_watchdog_sink_event (GstBaseTransform * trans,
|
|
GstEvent * event);
|
|
static gboolean gst_watchdog_src_event (GstBaseTransform * trans,
|
|
GstEvent * event);
|
|
static GstFlowReturn gst_watchdog_transform_ip (GstBaseTransform * trans,
|
|
GstBuffer * buf);
|
|
static void gst_watchdog_feed (GstWatchdog * watchdog, gpointer mini_object,
|
|
gboolean force);
|
|
|
|
static GstStateChangeReturn
|
|
gst_watchdog_change_state (GstElement * element, GstStateChange transition);
|
|
|
|
enum
|
|
{
|
|
PROP_0,
|
|
PROP_TIMEOUT
|
|
};
|
|
|
|
/* class initialization */
|
|
|
|
G_DEFINE_TYPE_WITH_CODE (GstWatchdog, gst_watchdog, GST_TYPE_BASE_TRANSFORM,
|
|
GST_DEBUG_CATEGORY_INIT (gst_watchdog_debug_category, "watchdog", 0,
|
|
"debug category for watchdog element"));
|
|
GST_ELEMENT_REGISTER_DEFINE (watchdog, "watchdog", GST_RANK_NONE,
|
|
gst_watchdog_get_type ());
|
|
|
|
static void
|
|
gst_watchdog_class_init (GstWatchdogClass * klass)
|
|
{
|
|
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
|
|
GstBaseTransformClass *base_transform_class =
|
|
GST_BASE_TRANSFORM_CLASS (klass);
|
|
|
|
GstElementClass *gstelement_klass = (GstElementClass *) klass;
|
|
|
|
gst_element_class_add_pad_template (GST_ELEMENT_CLASS (klass),
|
|
gst_pad_template_new ("src", GST_PAD_SRC, GST_PAD_ALWAYS,
|
|
gst_caps_new_any ()));
|
|
gst_element_class_add_pad_template (GST_ELEMENT_CLASS (klass),
|
|
gst_pad_template_new ("sink", GST_PAD_SINK, GST_PAD_ALWAYS,
|
|
gst_caps_new_any ()));
|
|
|
|
gst_element_class_set_static_metadata (GST_ELEMENT_CLASS (klass),
|
|
"Watchdog", "Generic", "Watches for pauses in stream buffers",
|
|
"David Schleef <ds@schleef.org>");
|
|
|
|
gstelement_klass->change_state =
|
|
GST_DEBUG_FUNCPTR (gst_watchdog_change_state);
|
|
gobject_class->set_property = gst_watchdog_set_property;
|
|
gobject_class->get_property = gst_watchdog_get_property;
|
|
base_transform_class->start = GST_DEBUG_FUNCPTR (gst_watchdog_start);
|
|
base_transform_class->stop = GST_DEBUG_FUNCPTR (gst_watchdog_stop);
|
|
base_transform_class->sink_event =
|
|
GST_DEBUG_FUNCPTR (gst_watchdog_sink_event);
|
|
base_transform_class->src_event = GST_DEBUG_FUNCPTR (gst_watchdog_src_event);
|
|
base_transform_class->transform_ip =
|
|
GST_DEBUG_FUNCPTR (gst_watchdog_transform_ip);
|
|
|
|
g_object_class_install_property (gobject_class, PROP_TIMEOUT,
|
|
g_param_spec_int ("timeout", "Timeout", "Timeout (in ms) after "
|
|
"which an element error is sent to the bus if no buffers are "
|
|
"received. 0 means disabled.", 0, G_MAXINT, 1000,
|
|
G_PARAM_CONSTRUCT | G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
|
|
|
|
}
|
|
|
|
static void
|
|
gst_watchdog_init (GstWatchdog * watchdog)
|
|
{
|
|
}
|
|
|
|
static void
|
|
gst_watchdog_set_property (GObject * object, guint property_id,
|
|
const GValue * value, GParamSpec * pspec)
|
|
{
|
|
GstWatchdog *watchdog = GST_WATCHDOG (object);
|
|
|
|
GST_DEBUG_OBJECT (watchdog, "set_property");
|
|
|
|
switch (property_id) {
|
|
case PROP_TIMEOUT:
|
|
GST_OBJECT_LOCK (watchdog);
|
|
watchdog->timeout = g_value_get_int (value);
|
|
gst_watchdog_feed (watchdog, NULL, FALSE);
|
|
GST_OBJECT_UNLOCK (watchdog);
|
|
break;
|
|
default:
|
|
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void
|
|
gst_watchdog_get_property (GObject * object, guint property_id,
|
|
GValue * value, GParamSpec * pspec)
|
|
{
|
|
GstWatchdog *watchdog = GST_WATCHDOG (object);
|
|
|
|
GST_DEBUG_OBJECT (watchdog, "get_property");
|
|
|
|
switch (property_id) {
|
|
case PROP_TIMEOUT:
|
|
g_value_set_int (value, watchdog->timeout);
|
|
break;
|
|
default:
|
|
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static gpointer
|
|
gst_watchdog_thread (gpointer user_data)
|
|
{
|
|
GstWatchdog *watchdog = GST_WATCHDOG (user_data);
|
|
|
|
GST_DEBUG_OBJECT (watchdog, "thread starting");
|
|
|
|
g_main_loop_run (watchdog->main_loop);
|
|
|
|
GST_DEBUG_OBJECT (watchdog, "thread exiting");
|
|
|
|
return NULL;
|
|
}
|
|
|
|
static gboolean
|
|
gst_watchdog_trigger (gpointer ptr)
|
|
{
|
|
GstWatchdog *watchdog = GST_WATCHDOG (ptr);
|
|
|
|
GST_DEBUG_OBJECT (watchdog, "watchdog triggered");
|
|
|
|
GST_ELEMENT_ERROR (watchdog, STREAM, FAILED, ("Watchdog triggered"),
|
|
("Watchdog triggered"));
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
static gboolean
|
|
gst_watchdog_quit_mainloop (gpointer ptr)
|
|
{
|
|
GstWatchdog *watchdog = GST_WATCHDOG (ptr);
|
|
|
|
GST_DEBUG_OBJECT (watchdog, "watchdog quit");
|
|
|
|
g_main_loop_quit (watchdog->main_loop);
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
/* Call with OBJECT_LOCK taken */
|
|
static void
|
|
gst_watchdog_feed (GstWatchdog * watchdog, gpointer mini_object, gboolean force)
|
|
{
|
|
if (watchdog->source) {
|
|
if (watchdog->waiting_for_flush_start) {
|
|
if (mini_object && GST_IS_EVENT (mini_object) &&
|
|
GST_EVENT_TYPE (mini_object) == GST_EVENT_FLUSH_START) {
|
|
watchdog->waiting_for_flush_start = FALSE;
|
|
watchdog->waiting_for_flush_stop = TRUE;
|
|
}
|
|
|
|
force = TRUE;
|
|
} else if (watchdog->waiting_for_flush_stop) {
|
|
if (mini_object && GST_IS_EVENT (mini_object) &&
|
|
GST_EVENT_TYPE (mini_object) == GST_EVENT_FLUSH_STOP) {
|
|
watchdog->waiting_for_flush_stop = FALSE;
|
|
watchdog->waiting_for_a_buffer = TRUE;
|
|
}
|
|
|
|
force = TRUE;
|
|
} else if (watchdog->waiting_for_a_buffer) {
|
|
if (mini_object && GST_IS_BUFFER (mini_object)) {
|
|
watchdog->waiting_for_a_buffer = FALSE;
|
|
GST_DEBUG_OBJECT (watchdog, "Got a buffer \\o/");
|
|
} else {
|
|
GST_DEBUG_OBJECT (watchdog, "Waiting for a buffer and did not get it,"
|
|
" keep trying even in PAUSED state");
|
|
force = TRUE;
|
|
}
|
|
}
|
|
g_source_destroy (watchdog->source);
|
|
g_source_unref (watchdog->source);
|
|
watchdog->source = NULL;
|
|
|
|
}
|
|
|
|
if (watchdog->timeout == 0) {
|
|
GST_LOG_OBJECT (watchdog, "Timeout is 0 => nothing to do");
|
|
} else if (watchdog->main_context == NULL) {
|
|
GST_LOG_OBJECT (watchdog, "No maincontext => nothing to do");
|
|
} else if ((GST_STATE (watchdog) != GST_STATE_PLAYING) && force == FALSE) {
|
|
GST_LOG_OBJECT (watchdog,
|
|
"Not in playing and force is FALSE => Nothing to do");
|
|
} else {
|
|
watchdog->source = g_timeout_source_new (watchdog->timeout);
|
|
g_source_set_callback (watchdog->source, gst_watchdog_trigger,
|
|
gst_object_ref (watchdog), gst_object_unref);
|
|
g_source_attach (watchdog->source, watchdog->main_context);
|
|
}
|
|
}
|
|
|
|
static gboolean
|
|
gst_watchdog_start (GstBaseTransform * trans)
|
|
{
|
|
GstWatchdog *watchdog = GST_WATCHDOG (trans);
|
|
|
|
GST_DEBUG_OBJECT (watchdog, "start");
|
|
GST_OBJECT_LOCK (watchdog);
|
|
|
|
watchdog->main_context = g_main_context_new ();
|
|
watchdog->main_loop = g_main_loop_new (watchdog->main_context, TRUE);
|
|
watchdog->thread = g_thread_new ("watchdog", gst_watchdog_thread, watchdog);
|
|
|
|
GST_OBJECT_UNLOCK (watchdog);
|
|
return TRUE;
|
|
}
|
|
|
|
static gboolean
|
|
gst_watchdog_stop (GstBaseTransform * trans)
|
|
{
|
|
GstWatchdog *watchdog = GST_WATCHDOG (trans);
|
|
GSource *quit_source;
|
|
|
|
GST_DEBUG_OBJECT (watchdog, "stop");
|
|
GST_OBJECT_LOCK (watchdog);
|
|
|
|
if (watchdog->source) {
|
|
g_source_destroy (watchdog->source);
|
|
g_source_unref (watchdog->source);
|
|
watchdog->source = NULL;
|
|
}
|
|
|
|
/* dispatch an idle event that trigger g_main_loop_quit to avoid race
|
|
* between g_main_loop_run and g_main_loop_quit */
|
|
quit_source = g_idle_source_new ();
|
|
g_source_set_callback (quit_source, gst_watchdog_quit_mainloop, watchdog,
|
|
NULL);
|
|
g_source_attach (quit_source, watchdog->main_context);
|
|
g_source_unref (quit_source);
|
|
|
|
g_thread_join (watchdog->thread);
|
|
watchdog->thread = NULL;
|
|
|
|
g_main_loop_unref (watchdog->main_loop);
|
|
watchdog->main_loop = NULL;
|
|
|
|
g_main_context_unref (watchdog->main_context);
|
|
watchdog->main_context = NULL;
|
|
|
|
GST_OBJECT_UNLOCK (watchdog);
|
|
return TRUE;
|
|
}
|
|
|
|
static gboolean
|
|
gst_watchdog_sink_event (GstBaseTransform * trans, GstEvent * event)
|
|
{
|
|
GstWatchdog *watchdog = GST_WATCHDOG (trans);
|
|
|
|
GST_DEBUG_OBJECT (watchdog, "sink_event");
|
|
|
|
GST_OBJECT_LOCK (watchdog);
|
|
gst_watchdog_feed (watchdog, event, FALSE);
|
|
GST_OBJECT_UNLOCK (watchdog);
|
|
|
|
return
|
|
GST_BASE_TRANSFORM_CLASS (gst_watchdog_parent_class)->sink_event (trans,
|
|
event);
|
|
}
|
|
|
|
static gboolean
|
|
gst_watchdog_src_event (GstBaseTransform * trans, GstEvent * event)
|
|
{
|
|
gboolean force = FALSE;
|
|
GstWatchdog *watchdog = GST_WATCHDOG (trans);
|
|
|
|
GST_DEBUG_OBJECT (watchdog, "src_event");
|
|
|
|
GST_OBJECT_LOCK (watchdog);
|
|
if (GST_EVENT_TYPE (event) == GST_EVENT_SEEK) {
|
|
GstSeekFlags flags;
|
|
|
|
gst_event_parse_seek (event, NULL, NULL, &flags, NULL, NULL, NULL, NULL);
|
|
|
|
if (flags & GST_SEEK_FLAG_FLUSH) {
|
|
force = TRUE;
|
|
GST_DEBUG_OBJECT (watchdog, "Got a FLUSHING seek, we need a buffer now!");
|
|
watchdog->waiting_for_flush_start = TRUE;
|
|
}
|
|
}
|
|
|
|
gst_watchdog_feed (watchdog, event, force);
|
|
GST_OBJECT_UNLOCK (watchdog);
|
|
|
|
return GST_BASE_TRANSFORM_CLASS (gst_watchdog_parent_class)->src_event (trans,
|
|
event);
|
|
}
|
|
|
|
static GstFlowReturn
|
|
gst_watchdog_transform_ip (GstBaseTransform * trans, GstBuffer * buf)
|
|
{
|
|
GstWatchdog *watchdog = GST_WATCHDOG (trans);
|
|
|
|
GST_DEBUG_OBJECT (watchdog, "transform_ip");
|
|
|
|
GST_OBJECT_LOCK (watchdog);
|
|
gst_watchdog_feed (watchdog, buf, FALSE);
|
|
GST_OBJECT_UNLOCK (watchdog);
|
|
|
|
return GST_FLOW_OK;
|
|
}
|
|
|
|
/*
|
|
* Change state handler for the element.
|
|
*/
|
|
static GstStateChangeReturn
|
|
gst_watchdog_change_state (GstElement * element, GstStateChange transition)
|
|
{
|
|
GstStateChangeReturn ret = GST_STATE_CHANGE_SUCCESS;
|
|
GstWatchdog *watchdog = GST_WATCHDOG (element);
|
|
|
|
GST_DEBUG_OBJECT (watchdog, "gst_watchdog_change_state");
|
|
|
|
switch (transition) {
|
|
case GST_STATE_CHANGE_PAUSED_TO_PLAYING:
|
|
/* Activate timer */
|
|
GST_OBJECT_LOCK (watchdog);
|
|
gst_watchdog_feed (watchdog, NULL, FALSE);
|
|
GST_OBJECT_UNLOCK (watchdog);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
ret =
|
|
GST_ELEMENT_CLASS (gst_watchdog_parent_class)->change_state (element,
|
|
transition);
|
|
|
|
switch (transition) {
|
|
case GST_STATE_CHANGE_READY_TO_PAUSED:
|
|
GST_OBJECT_LOCK (watchdog);
|
|
watchdog->waiting_for_a_buffer = TRUE;
|
|
gst_watchdog_feed (watchdog, NULL, TRUE);
|
|
GST_OBJECT_UNLOCK (watchdog);
|
|
break;
|
|
case GST_STATE_CHANGE_PLAYING_TO_PAUSED:
|
|
/* Disable the timer */
|
|
GST_OBJECT_LOCK (watchdog);
|
|
if (watchdog->source) {
|
|
g_source_destroy (watchdog->source);
|
|
g_source_unref (watchdog->source);
|
|
watchdog->source = NULL;
|
|
}
|
|
GST_OBJECT_UNLOCK (watchdog);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
return ret;
|
|
}
|