gstreamer/gst/debugutils/fpsdisplaysink.c

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/*
* Copyright 2009 Nokia Corporation <multimedia@maemo.org>
* 2006 Zeeshan Ali <zeeshan.ali@nokia.com>.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
/**
* SECTION:element-fpsdisplaysink
*
* Can display the current and average framerate as a testoverlay or on stdout.
*
* <refsect2>
* <title>Example launch lines</title>
* |[
* gst-launch videotestsrc ! fpsdisplaysink
* gst-launch videotestsrc ! fpsdisplaysink text-overlay=false
* gst-launch filesrc location=video.avi ! decodebin2 name=d ! queue ! fpsdisplaysink d. ! queue ! fakesink sync=true
2012-10-10 12:11:43 +00:00
* gst-launch playbin uri=file:///path/to/video.avi video-sink="fpsdisplaysink" audio-sink=fakesink
* ]|
* </refsect2>
*/
/* FIXME:
* - can we avoid plugging the textoverlay?
* - gst-seek 15 "videotestsrc ! fpsdisplaysink" dies when closing gst-seek
*
* NOTE:
* - if we make ourself RANK_PRIMARY+10 or something that autovideosink would
* select and fpsdisplaysink is set to use autovideosink as its internal sink
* it doesn't work. Reason: autovideosink creates a fpsdisplaysink, that
* creates an autovideosink, that...
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "debugutils-marshal.h"
#include "fpsdisplaysink.h"
#define DEFAULT_SIGNAL_FPS_MEASUREMENTS FALSE
#define DEFAULT_FPS_UPDATE_INTERVAL_MS 500 /* 500 ms */
#define DEFAULT_FONT "Sans 15"
#define DEFAULT_SILENT FALSE
#define DEFAULT_LAST_MESSAGE NULL
/* generic templates */
static GstStaticPadTemplate fps_display_sink_template =
GST_STATIC_PAD_TEMPLATE ("sink",
GST_PAD_SINK,
GST_PAD_ALWAYS,
GST_STATIC_CAPS_ANY);
GST_DEBUG_CATEGORY_STATIC (fps_display_sink_debug);
#define GST_CAT_DEFAULT fps_display_sink_debug
#define DEFAULT_SYNC TRUE
enum
{
/* FILL ME */
SIGNAL_FPS_MEASUREMENTS,
LAST_SIGNAL
};
enum
{
PROP_0,
PROP_SYNC,
PROP_TEXT_OVERLAY,
PROP_VIDEO_SINK,
PROP_FPS_UPDATE_INTERVAL,
PROP_MAX_FPS,
PROP_MIN_FPS,
PROP_SIGNAL_FPS_MEASUREMENTS,
PROP_FRAMES_DROPPED,
PROP_FRAMES_RENDERED,
PROP_SILENT,
PROP_LAST_MESSAGE
/* FILL ME */
};
static GstBinClass *parent_class = NULL;
static GstStateChangeReturn fps_display_sink_change_state (GstElement * element,
GstStateChange transition);
static void fps_display_sink_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec);
static void fps_display_sink_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec);
static void fps_display_sink_dispose (GObject * object);
static gboolean display_current_fps (gpointer data);
static guint fpsdisplaysink_signals[LAST_SIGNAL] = { 0 };
static GParamSpec *pspec_last_message = NULL;
static void
fps_display_sink_class_init (GstFPSDisplaySinkClass * klass)
{
GObjectClass *gobject_klass = G_OBJECT_CLASS (klass);
GstElementClass *gstelement_klass = GST_ELEMENT_CLASS (klass);
parent_class = g_type_class_peek_parent (klass);
gobject_klass->set_property = fps_display_sink_set_property;
gobject_klass->get_property = fps_display_sink_get_property;
gobject_klass->dispose = fps_display_sink_dispose;
g_object_class_install_property (gobject_klass, PROP_SYNC,
g_param_spec_boolean ("sync",
"Sync", "Sync on the clock (if the internally used sink doesn't "
"have this property it will be ignored", DEFAULT_SYNC,
G_PARAM_STATIC_STRINGS | G_PARAM_READWRITE));
g_object_class_install_property (gobject_klass, PROP_TEXT_OVERLAY,
g_param_spec_boolean ("text-overlay",
"text-overlay",
"Whether to use text-overlay", TRUE,
G_PARAM_STATIC_STRINGS | G_PARAM_READWRITE));
g_object_class_install_property (gobject_klass, PROP_VIDEO_SINK,
g_param_spec_object ("video-sink",
"video-sink",
"Video sink to use (Must only be called on NULL state)",
GST_TYPE_ELEMENT, G_PARAM_STATIC_STRINGS | G_PARAM_READWRITE));
g_object_class_install_property (gobject_klass, PROP_FPS_UPDATE_INTERVAL,
g_param_spec_int ("fps-update-interval", "Fps update interval",
"Time between consecutive frames per second measures and update "
" (in ms). Should be set on NULL state", 1, G_MAXINT,
DEFAULT_FPS_UPDATE_INTERVAL_MS,
G_PARAM_STATIC_STRINGS | G_PARAM_READWRITE));
g_object_class_install_property (gobject_klass, PROP_MAX_FPS,
g_param_spec_double ("max-fps", "Max fps",
"Maximum fps rate measured. Reset when going from NULL to READY."
"-1 means no measurement has yet been done", -1, G_MAXDOUBLE, -1,
G_PARAM_STATIC_STRINGS | G_PARAM_READABLE));
g_object_class_install_property (gobject_klass, PROP_MIN_FPS,
g_param_spec_double ("min-fps", "Min fps",
"Minimum fps rate measured. Reset when going from NULL to READY."
"-1 means no measurement has yet been done", -1, G_MAXDOUBLE, -1,
G_PARAM_STATIC_STRINGS | G_PARAM_READABLE));
g_object_class_install_property (gobject_klass, PROP_FRAMES_DROPPED,
g_param_spec_uint ("frames-dropped", "dropped frames",
"Number of frames dropped by the sink", 0, G_MAXUINT, 0,
G_PARAM_STATIC_STRINGS | G_PARAM_READABLE));
g_object_class_install_property (gobject_klass, PROP_FRAMES_RENDERED,
g_param_spec_uint ("frames-rendered", "rendered frames",
"Number of frames rendered", 0, G_MAXUINT, 0,
G_PARAM_STATIC_STRINGS | G_PARAM_READABLE));
g_object_class_install_property (gobject_klass, PROP_SILENT,
g_param_spec_boolean ("silent", "enable stdout output",
"Don't produce last_message events", DEFAULT_SILENT,
G_PARAM_STATIC_STRINGS | G_PARAM_READWRITE));
g_object_class_install_property (gobject_klass, PROP_SIGNAL_FPS_MEASUREMENTS,
g_param_spec_boolean ("signal-fps-measurements",
"Signal fps measurements",
"If the fps-measurements signal should be emited.",
DEFAULT_SIGNAL_FPS_MEASUREMENTS,
G_PARAM_STATIC_STRINGS | G_PARAM_READWRITE));
pspec_last_message = g_param_spec_string ("last-message", "Last Message",
"The message describing current status", DEFAULT_LAST_MESSAGE,
G_PARAM_READABLE | G_PARAM_STATIC_STRINGS);
g_object_class_install_property (gobject_klass, PROP_LAST_MESSAGE,
pspec_last_message);
/**
* GstFPSDisplaySink::fps-measurements:
* @fpsdisplaysink: a #GstFPSDisplaySink
* @fps: The current measured fps
* @droprate: The rate at which buffers are being dropped
* @avgfps: The average fps
*
* Signals the application about the measured fps
*
* Since: 0.10.20
*/
fpsdisplaysink_signals[SIGNAL_FPS_MEASUREMENTS] =
g_signal_new ("fps-measurements", G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_LAST, 0, NULL, NULL,
__gst_debugutils_marshal_VOID__DOUBLE_DOUBLE_DOUBLE,
G_TYPE_NONE, 3, G_TYPE_DOUBLE, G_TYPE_DOUBLE, G_TYPE_DOUBLE);
gstelement_klass->change_state = fps_display_sink_change_state;
gst_element_class_add_pad_template (gstelement_klass,
gst_static_pad_template_get (&fps_display_sink_template));
gst_element_class_set_static_metadata (gstelement_klass,
"Measure and show framerate on videosink", "Sink/Video",
"Shows the current frame-rate and drop-rate of the videosink as overlay or text on stdout",
"Zeeshan Ali <zeeshan.ali@nokia.com>, Stefan Kost <stefan.kost@nokia.com>");
}
2012-02-02 22:21:50 +00:00
static GstPadProbeReturn
on_video_sink_data_flow (GstPad * pad, GstPadProbeInfo * info,
gpointer user_data)
{
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GstMiniObject *mini_obj = GST_PAD_PROBE_INFO_DATA (info);
GstFPSDisplaySink *self = GST_FPS_DISPLAY_SINK (user_data);
#if 0
if (GST_IS_BUFFER (mini_obj)) {
GstBuffer *buf = GST_BUFFER_CAST (mini_obj);
if (GST_CLOCK_TIME_IS_VALID (self->next_ts)) {
if (GST_BUFFER_TIMESTAMP (buf) <= self->next_ts) {
self->frames_rendered++;
} else {
GST_WARNING_OBJECT (self, "dropping frame : ts %" GST_TIME_FORMAT
" < expected_ts %" GST_TIME_FORMAT,
GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (buf)),
GST_TIME_ARGS (self->next_ts));
self->frames_dropped++;
}
} else {
self->frames_rendered++;
}
} else
#endif
if (GST_IS_EVENT (mini_obj)) {
GstEvent *ev = GST_EVENT_CAST (mini_obj);
if (GST_EVENT_TYPE (ev) == GST_EVENT_QOS) {
GstClockTimeDiff diff;
GstClockTime ts;
2012-02-02 22:21:50 +00:00
gst_event_parse_qos (ev, NULL, NULL, &diff, &ts);
if (diff <= 0.0) {
g_atomic_int_inc (&self->frames_rendered);
} else {
g_atomic_int_inc (&self->frames_dropped);
}
ts = gst_util_get_timestamp ();
if (G_UNLIKELY (!GST_CLOCK_TIME_IS_VALID (self->start_ts))) {
self->interval_ts = self->last_ts = self->start_ts = ts;
}
if (GST_CLOCK_DIFF (self->interval_ts, ts) > self->fps_update_interval) {
display_current_fps (self);
self->interval_ts = ts;
}
}
}
2012-02-02 22:21:50 +00:00
return GST_PAD_PROBE_OK;
}
static void
update_sub_sync (GstElement * sink, gpointer data)
{
/* Some sinks (like autovideosink) don't have the sync property so
* we check it exists before setting it to avoid a warning at
* runtime. */
if (g_object_class_find_property (G_OBJECT_GET_CLASS (sink), "sync"))
g_object_set (sink, "sync", *((gboolean *) data), NULL);
else
GST_WARNING ("Internal sink doesn't have sync property");
}
2012-02-02 22:21:50 +00:00
static void
update_sub_sync_foreach (const GValue * item, gpointer data)
{
GstElement *sink = g_value_get_object (item);
update_sub_sync (sink, data);
}
static void
fps_display_sink_update_sink_sync (GstFPSDisplaySink * self)
{
GstIterator *iterator;
if (self->video_sink == NULL)
return;
if (GST_IS_BIN (self->video_sink)) {
iterator = gst_bin_iterate_sinks (GST_BIN (self->video_sink));
2012-02-02 22:21:50 +00:00
gst_iterator_foreach (iterator,
(GstIteratorForeachFunction) update_sub_sync_foreach,
(void *) &self->sync);
gst_iterator_free (iterator);
} else
update_sub_sync (self->video_sink, (void *) &self->sync);
}
static void
update_video_sink (GstFPSDisplaySink * self, GstElement * video_sink)
{
GstPad *sink_pad;
if (self->video_sink) {
/* remove pad probe */
sink_pad = gst_element_get_static_pad (self->video_sink, "sink");
2012-02-02 22:21:50 +00:00
gst_pad_remove_probe (sink_pad, self->data_probe_id);
gst_object_unref (sink_pad);
self->data_probe_id = -1;
/* remove ghost pad target */
gst_ghost_pad_set_target (GST_GHOST_PAD (self->ghost_pad), NULL);
/* remove old sink */
gst_bin_remove (GST_BIN (self), self->video_sink);
gst_object_unref (self->video_sink);
}
/* create child elements */
self->video_sink = video_sink;
if (self->video_sink == NULL)
return;
fps_display_sink_update_sink_sync (self);
/* take a ref before bin takes the ownership */
gst_object_ref (self->video_sink);
gst_bin_add (GST_BIN (self), self->video_sink);
/* attach or pad probe */
sink_pad = gst_element_get_static_pad (self->video_sink, "sink");
2012-02-02 22:21:50 +00:00
self->data_probe_id = gst_pad_add_probe (sink_pad,
GST_PAD_PROBE_TYPE_DATA_BOTH, on_video_sink_data_flow,
(gpointer) self, NULL);
gst_object_unref (sink_pad);
}
static void
fps_display_sink_init (GstFPSDisplaySink * self,
GstFPSDisplaySinkClass * g_class)
{
self->sync = DEFAULT_SYNC;
self->signal_measurements = DEFAULT_SIGNAL_FPS_MEASUREMENTS;
self->use_text_overlay = TRUE;
self->fps_update_interval = GST_MSECOND * DEFAULT_FPS_UPDATE_INTERVAL_MS;
self->video_sink = NULL;
self->max_fps = -1;
self->min_fps = -1;
self->silent = DEFAULT_SILENT;
self->last_message = g_strdup (DEFAULT_LAST_MESSAGE);
self->ghost_pad = gst_ghost_pad_new_no_target ("sink", GST_PAD_SINK);
gst_element_add_pad (GST_ELEMENT (self), self->ghost_pad);
}
static gboolean
display_current_fps (gpointer data)
{
GstFPSDisplaySink *self = GST_FPS_DISPLAY_SINK (data);
guint64 frames_rendered, frames_dropped;
gdouble rr, dr, average_fps;
gchar fps_message[256];
gdouble time_diff, time_elapsed;
GstClockTime current_ts = gst_util_get_timestamp ();
frames_rendered = g_atomic_int_get (&self->frames_rendered);
frames_dropped = g_atomic_int_get (&self->frames_dropped);
if ((frames_rendered + frames_dropped) == 0) {
/* in case timer fired and we didn't yet get any QOS events */
return TRUE;
}
time_diff = (gdouble) (current_ts - self->last_ts) / GST_SECOND;
time_elapsed = (gdouble) (current_ts - self->start_ts) / GST_SECOND;
rr = (gdouble) (frames_rendered - self->last_frames_rendered) / time_diff;
dr = (gdouble) (frames_dropped - self->last_frames_dropped) / time_diff;
average_fps = (gdouble) frames_rendered / time_elapsed;
if (self->max_fps == -1 || rr > self->max_fps) {
self->max_fps = rr;
GST_DEBUG_OBJECT (self, "Updated max-fps to %f", rr);
}
if (self->min_fps == -1 || rr < self->min_fps) {
self->min_fps = rr;
GST_DEBUG_OBJECT (self, "Updated min-fps to %f", rr);
}
if (self->signal_measurements) {
GST_LOG_OBJECT (self, "Signaling measurements: fps:%f droprate:%f "
"avg-fps:%f", rr, dr, average_fps);
g_signal_emit (G_OBJECT (self),
fpsdisplaysink_signals[SIGNAL_FPS_MEASUREMENTS], 0, rr, dr,
average_fps);
}
/* Display on a single line to make it easier to read and import
* into, for example, excel.. note: it would be nice to show
* timestamp too.. need to check if there is a sane way to log
* timestamp of last rendered buffer, so we could correlate dips
* in framerate to certain positions in the stream.
*/
if (dr == 0.0) {
g_snprintf (fps_message, 255,
"rendered: %" G_GUINT64_FORMAT ", dropped: %" G_GUINT64_FORMAT
", current: %.2f, average: %.2f", frames_rendered, frames_dropped, rr,
average_fps);
} else {
g_snprintf (fps_message, 255,
"rendered: %" G_GUINT64_FORMAT ", dropped: %" G_GUINT64_FORMAT
", fps: %.2f, drop rate: %.2f", frames_rendered, frames_dropped, rr,
dr);
}
if (self->use_text_overlay) {
g_object_set (self->text_overlay, "text", fps_message, NULL);
}
if (!self->silent) {
GST_OBJECT_LOCK (self);
g_free (self->last_message);
self->last_message = g_strdup (fps_message);
GST_OBJECT_UNLOCK (self);
#if !GLIB_CHECK_VERSION(2,26,0)
g_object_notify ((GObject *) self, "last-message");
#else
g_object_notify_by_pspec ((GObject *) self, pspec_last_message);
#endif
}
self->last_frames_rendered = frames_rendered;
self->last_frames_dropped = frames_dropped;
self->last_ts = current_ts;
return TRUE;
}
static void
fps_display_sink_start (GstFPSDisplaySink * self)
{
GstPad *target_pad = NULL;
/* Init counters */
self->frames_rendered = 0;
self->frames_dropped = 0;
self->last_frames_rendered = G_GUINT64_CONSTANT (0);
self->last_frames_dropped = G_GUINT64_CONSTANT (0);
self->max_fps = -1;
self->min_fps = -1;
/* init time stamps */
self->last_ts = self->start_ts = self->interval_ts = GST_CLOCK_TIME_NONE;
GST_DEBUG_OBJECT (self, "Use text-overlay? %d", self->use_text_overlay);
if (self->use_text_overlay) {
if (!self->text_overlay) {
self->text_overlay =
gst_element_factory_make ("textoverlay", "fps-display-text-overlay");
if (!self->text_overlay) {
GST_WARNING_OBJECT (self, "text-overlay element could not be created");
self->use_text_overlay = FALSE;
goto no_text_overlay;
}
gst_object_ref (self->text_overlay);
g_object_set (self->text_overlay,
"font-desc", DEFAULT_FONT, "silent", FALSE, NULL);
gst_bin_add (GST_BIN (self), self->text_overlay);
if (!gst_element_link (self->text_overlay, self->video_sink)) {
GST_ERROR_OBJECT (self, "Could not link elements");
}
}
target_pad = gst_element_get_static_pad (self->text_overlay, "video_sink");
}
no_text_overlay:
if (!self->use_text_overlay) {
if (self->text_overlay) {
gst_element_unlink (self->text_overlay, self->video_sink);
gst_bin_remove (GST_BIN (self), self->text_overlay);
self->text_overlay = NULL;
}
target_pad = gst_element_get_static_pad (self->video_sink, "sink");
}
gst_ghost_pad_set_target (GST_GHOST_PAD (self->ghost_pad), target_pad);
gst_object_unref (target_pad);
}
static void
fps_display_sink_stop (GstFPSDisplaySink * self)
{
if (self->text_overlay) {
gst_element_unlink (self->text_overlay, self->video_sink);
gst_bin_remove (GST_BIN (self), self->text_overlay);
gst_object_unref (self->text_overlay);
self->text_overlay = NULL;
}
if (!self->silent) {
gchar *str;
/* print the max and minimum fps values */
str =
g_strdup_printf ("Max-fps: %0.2f, Min-fps: %0.2f", self->max_fps,
self->min_fps);
GST_OBJECT_LOCK (self);
g_free (self->last_message);
self->last_message = str;
GST_OBJECT_UNLOCK (self);
#if !GLIB_CHECK_VERSION(2,26,0)
g_object_notify ((GObject *) self, "last-message");
#else
g_object_notify_by_pspec ((GObject *) self, pspec_last_message);
#endif
}
GST_OBJECT_LOCK (self);
g_free (self->last_message);
self->last_message = NULL;
GST_OBJECT_UNLOCK (self);
}
static void
fps_display_sink_dispose (GObject * object)
{
GstFPSDisplaySink *self = GST_FPS_DISPLAY_SINK (object);
if (self->video_sink) {
gst_object_unref (self->video_sink);
self->video_sink = NULL;
}
if (self->text_overlay) {
gst_object_unref (self->text_overlay);
self->text_overlay = NULL;
}
GST_OBJECT_LOCK (self);
g_free (self->last_message);
self->last_message = NULL;
GST_OBJECT_UNLOCK (self);
G_OBJECT_CLASS (parent_class)->dispose (object);
}
static void
fps_display_sink_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec)
{
GstFPSDisplaySink *self = GST_FPS_DISPLAY_SINK (object);
switch (prop_id) {
case PROP_SYNC:
self->sync = g_value_get_boolean (value);
fps_display_sink_update_sink_sync (self);
break;
case PROP_TEXT_OVERLAY:
self->use_text_overlay = g_value_get_boolean (value);
if (self->text_overlay) {
if (!self->use_text_overlay) {
GST_DEBUG_OBJECT (self, "text-overlay set to false");
g_object_set (self->text_overlay, "text", "", "silent", TRUE, NULL);
} else {
GST_DEBUG_OBJECT (self, "text-overlay set to true");
g_object_set (self->text_overlay, "silent", FALSE, NULL);
}
}
break;
case PROP_VIDEO_SINK:
/* FIXME should we add a state-lock or a lock around here?
* need to check if it is possible that a state change NULL->READY can
* happen while this code is executing on a different thread */
if (GST_STATE (self) != GST_STATE_NULL) {
g_warning ("Can't set video-sink property of fpsdisplaysink if not on "
"NULL state");
break;
}
update_video_sink (self, (GstElement *) g_value_get_object (value));
break;
case PROP_FPS_UPDATE_INTERVAL:
self->fps_update_interval =
GST_MSECOND * (GstClockTime) g_value_get_int (value);
break;
case PROP_SIGNAL_FPS_MEASUREMENTS:
self->signal_measurements = g_value_get_boolean (value);
break;
case PROP_SILENT:
self->silent = g_value_get_boolean (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
fps_display_sink_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec)
{
GstFPSDisplaySink *self = GST_FPS_DISPLAY_SINK (object);
switch (prop_id) {
case PROP_SYNC:
g_value_set_boolean (value, self->sync);
break;
case PROP_TEXT_OVERLAY:
g_value_set_boolean (value, self->use_text_overlay);
break;
case PROP_VIDEO_SINK:
g_value_set_object (value, self->video_sink);
break;
case PROP_FPS_UPDATE_INTERVAL:
g_value_set_int (value, (gint) (self->fps_update_interval / GST_MSECOND));
break;
case PROP_MAX_FPS:
g_value_set_double (value, self->max_fps);
break;
case PROP_MIN_FPS:
g_value_set_double (value, self->min_fps);
break;
case PROP_FRAMES_DROPPED:
g_value_set_uint (value, g_atomic_int_get (&self->frames_dropped));
break;
case PROP_FRAMES_RENDERED:
g_value_set_uint (value, g_atomic_int_get (&self->frames_rendered));
break;
case PROP_SIGNAL_FPS_MEASUREMENTS:
g_value_set_boolean (value, self->signal_measurements);
break;
case PROP_SILENT:
g_value_set_boolean (value, self->silent);
break;
case PROP_LAST_MESSAGE:
GST_OBJECT_LOCK (self);
g_value_set_string (value, self->last_message);
GST_OBJECT_UNLOCK (self);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static GstStateChangeReturn
fps_display_sink_change_state (GstElement * element, GstStateChange transition)
{
GstStateChangeReturn ret = GST_STATE_CHANGE_SUCCESS;
GstFPSDisplaySink *self = GST_FPS_DISPLAY_SINK (element);
switch (transition) {
case GST_STATE_CHANGE_NULL_TO_READY:
if (self->video_sink == NULL) {
GstElement *video_sink;
GST_DEBUG_OBJECT (self, "No video sink set, creating autovideosink");
video_sink = gst_element_factory_make ("autovideosink",
"fps-display-video_sink");
update_video_sink (self, video_sink);
}
if (self->video_sink != NULL) {
fps_display_sink_start (self);
} else {
GST_ELEMENT_ERROR (self, LIBRARY, INIT,
("No video sink set and autovideosink is not available"), (NULL));
ret = GST_STATE_CHANGE_FAILURE;
}
break;
case GST_STATE_CHANGE_READY_TO_PAUSED:
case GST_STATE_CHANGE_PAUSED_TO_PLAYING:
/* reinforce our sync to children, as they might have changed
* internally */
fps_display_sink_update_sink_sync (self);
break;
default:
break;
}
ret = GST_CALL_PARENT_WITH_DEFAULT (GST_ELEMENT_CLASS, change_state,
(element, transition), GST_STATE_CHANGE_SUCCESS);
switch (transition) {
case GST_STATE_CHANGE_READY_TO_NULL:
fps_display_sink_stop (self);
break;
default:
break;
}
return ret;
}
GType
fps_display_sink_get_type (void)
{
static GType fps_display_sink_type = 0;
if (!fps_display_sink_type) {
static const GTypeInfo fps_display_sink_info = {
sizeof (GstFPSDisplaySinkClass),
NULL,
NULL,
(GClassInitFunc) fps_display_sink_class_init,
NULL,
NULL,
sizeof (GstFPSDisplaySink),
0,
(GInstanceInitFunc) fps_display_sink_init,
};
fps_display_sink_type = g_type_register_static (GST_TYPE_BIN,
"GstFPSDisplaySink", &fps_display_sink_info, 0);
GST_DEBUG_CATEGORY_INIT (fps_display_sink_debug, "fpsdisplaysink", 0,
"FPS Display Sink");
}
return fps_display_sink_type;
}