static GstElement *
default_create_pipeline (GstRTSPMediaFactory * factory, GstRTSPMedia * media)
{
GstElement *pipeline;
pipeline = gst_pipeline_new ("media-pipeline");
gst_rtsp_media_take_pipeline (media, GST_PIPELINE_CAST (pipeline));
return pipeline;
}
static GstElement *
create_pipeline (GstRTSPMediaFactory * factory, GstRTSPMedia * media)
{
GstElement *pipeline;
pipeline = gst_pipeline_new ("media-pipeline");
if (global_clock == NULL) {
g_print ("No clock!!!!\n");
} else {
gst_pipeline_use_clock (GST_PIPELINE (pipeline), global_clock);
}
gst_rtsp_media_take_pipeline (media, GST_PIPELINE_CAST (pipeline));
return pipeline;
}
static GstElement *
default_create_pipeline (GstRTSPMediaFactory * factory, GstRTSPMedia * media)
{
GstElement *pipeline;
pipeline = gst_pipeline_new ("media-pipeline");
/* FIXME 2.0: This should be done by the caller, not the vfunc. Every
* implementation of the vfunc has to call it otherwise at the end.
* Also it does not allow use to add further behaviour here that could
* be reused by subclasses that chain up */
gst_rtsp_media_take_pipeline (media, GST_PIPELINE_CAST (pipeline));
return pipeline;
}
static int act_gstreamer_render (VisPluginData *plugin, VisVideo *video, VisAudio *audio)
{
GstreamerPrivate *priv = visual_object_get_private (VISUAL_OBJECT (plugin));
static int playing = 0;
if (playing == 0) {
char pipe[1024];
gst_init (NULL, NULL);
/*
snprintf(pipe, 1024, "filesrc location=%s ! decodebin ! ffmpegcolorspace ! "
"videoscale ! video/x-raw-rgb,bpp=32,depth=32,width=%d,height=%d,"
"red_mask=0xff000000,green_mask=0x00ff0000,blue_mask=0x0000ff00 !"
"fakesink name=sink sync=true", "test.mpg", video->width, video->height);
*/
snprintf(pipe, 1024, "filesrc location=%s ! decodebin ! ffmpegcolorspace ! "
"video/x-raw-rgb,bpp=24,depth=24 ! "
"fakesink name=sink signal-handoffs=true", "test.mpg");
GError *err = NULL;
priv->pipe = GST_PIPELINE_CAST(gst_parse_launch (pipe, &err));
if (err) {
visual_log (VISUAL_LOG_ERROR, "Failed to create pipeline", err->message);
return;
}
gst_element_set_state (GST_ELEMENT (priv->pipe), GST_STATE_PLAYING);
g_signal_connect (gst_bin_get_by_name_recurse_up (GST_BIN (priv->pipe), "sink"),
"handoff", G_CALLBACK (have_data), video);
playing = 1;
}
// g_signal_handlers_disconnect_by_func (gst_bin_get_by_name_recurse_up (GST_BIN (priv->pipe), "sink"),
// G_CALLBACK (have_data), priv->old_video);
gst_bin_iterate (GST_BIN (priv->pipe));
priv->old_video = video;
return 0;
}
/* takes a snapshot of the running_time of the pipeline and store this as the
* element start_time. This is the time we will set as the running_time of the
* pipeline when we go to PLAYING next. */
static void
pipeline_update_start_time (GstElement * element)
{
GstPipeline *pipeline = GST_PIPELINE_CAST (element);
GstClock *clock;
GST_OBJECT_LOCK (element);
if ((clock = element->clock)) {
GstClockTime now;
gst_object_ref (clock);
GST_OBJECT_UNLOCK (element);
/* calculate the time when we stopped */
now = gst_clock_get_time (clock);
gst_object_unref (clock);
GST_OBJECT_LOCK (element);
/* store the current running time */
if (GST_ELEMENT_START_TIME (pipeline) != GST_CLOCK_TIME_NONE) {
if (now != GST_CLOCK_TIME_NONE)
GST_ELEMENT_START_TIME (pipeline) = now - element->base_time;
else
GST_WARNING_OBJECT (element,
"Clock %s returned invalid time, can't calculate "
"running_time when going to the PAUSED state",
GST_OBJECT_NAME (clock));
/* we went to PAUSED, when going to PLAYING select clock and new
* base_time */
pipeline->priv->update_clock = TRUE;
}
GST_DEBUG_OBJECT (element,
"start_time=%" GST_TIME_FORMAT ", now=%" GST_TIME_FORMAT
", base_time %" GST_TIME_FORMAT,
GST_TIME_ARGS (GST_ELEMENT_START_TIME (pipeline)),
GST_TIME_ARGS (now), GST_TIME_ARGS (element->base_time));
}
GST_OBJECT_UNLOCK (element);
}
/**
* gst_validate_monitor_factory_create:
* @target: The #GstObject to create a #GstValidateMonitor for
* @runner: The #GstValidateRunner to use for the new monitor
* @parent: (nullable): The parent of the new monitor
*
* Create a new monitor for @target and starts monitoring it.
*
* Returns: (transfer full): The newly created #GstValidateMonitor
*/
GstValidateMonitor *
gst_validate_monitor_factory_create (GstObject * target,
GstValidateRunner * runner, GstValidateMonitor * parent)
{
GstValidateMonitor *monitor = NULL;
g_return_val_if_fail (target != NULL, NULL);
monitor = g_object_get_data ((GObject *) target, "validate-monitor");
if (monitor) {
GST_INFO_OBJECT (target, "Is already monitored by %" GST_PTR_FORMAT,
monitor);
return g_object_ref (monitor);
}
if (GST_IS_PAD (target)) {
monitor =
GST_VALIDATE_MONITOR_CAST (gst_validate_pad_monitor_new (GST_PAD_CAST
(target), runner, GST_VALIDATE_ELEMENT_MONITOR_CAST (parent)));
} else if (GST_IS_PIPELINE (target)) {
monitor =
GST_VALIDATE_MONITOR_CAST (gst_validate_pipeline_monitor_new
(GST_PIPELINE_CAST (target), runner, parent));
} else if (GST_IS_BIN (target)) {
monitor =
GST_VALIDATE_MONITOR_CAST (gst_validate_bin_monitor_new (GST_BIN_CAST
(target), runner, parent));
} else if (GST_IS_ELEMENT (target)) {
monitor =
GST_VALIDATE_MONITOR_CAST (gst_validate_element_monitor_new
(GST_ELEMENT_CAST (target), runner, parent));
} else {
g_assert_not_reached ();
}
return monitor;
}
/* intercept the bus messages from our children. We watch for the ASYNC_START
* message with is posted by the elements (sinks) that require a reset of the
* running_time after a flush. ASYNC_START also brings the pipeline back into
* the PAUSED, pending PAUSED state. When the ASYNC_DONE message is received the
* pipeline will redistribute the new base_time and will bring the elements back
* to the desired state of the pipeline. */
static void
gst_pipeline_handle_message (GstBin * bin, GstMessage * message)
{
GstPipeline *pipeline = GST_PIPELINE_CAST (bin);
switch (GST_MESSAGE_TYPE (message)) {
case GST_MESSAGE_RESET_TIME:
{
GstClockTime running_time;
gst_message_parse_reset_time (message, &running_time);
/* reset our running time if we need to distribute a new base_time to the
* children. */
reset_start_time (pipeline, running_time);
break;
}
case GST_MESSAGE_CLOCK_LOST:
{
GstClock *clock;
gst_message_parse_clock_lost (message, &clock);
GST_OBJECT_LOCK (bin);
if (clock == GST_ELEMENT_CAST (bin)->clock) {
GST_DEBUG_OBJECT (bin, "Used clock '%s' got lost",
GST_OBJECT_NAME (clock));
pipeline->priv->update_clock = TRUE;
}
GST_OBJECT_UNLOCK (bin);
}
default:
break;
}
GST_BIN_CLASS (parent_class)->handle_message (bin, message);
}
/* MT safe */
static GstStateChangeReturn
gst_pipeline_change_state (GstElement * element, GstStateChange transition)
{
GstStateChangeReturn result = GST_STATE_CHANGE_SUCCESS;
GstPipeline *pipeline = GST_PIPELINE_CAST (element);
GstClock *clock;
switch (transition) {
case GST_STATE_CHANGE_NULL_TO_READY:
GST_OBJECT_LOCK (element);
if (element->bus)
gst_bus_set_flushing (element->bus, FALSE);
GST_OBJECT_UNLOCK (element);
break;
case GST_STATE_CHANGE_READY_TO_PAUSED:
GST_OBJECT_LOCK (element);
pipeline->priv->update_clock = TRUE;
GST_OBJECT_UNLOCK (element);
/* READY to PAUSED starts running_time from 0 */
reset_start_time (pipeline, 0);
break;
case GST_STATE_CHANGE_PAUSED_TO_PLAYING:
{
GstClockTime now, start_time, last_start_time, delay;
gboolean update_clock;
GstClock *cur_clock;
GST_DEBUG_OBJECT (element, "selecting clock and base_time");
GST_OBJECT_LOCK (element);
cur_clock = element->clock;
if (cur_clock)
gst_object_ref (cur_clock);
/* get the desired running_time of the first buffer aka the start_time */
start_time = GST_ELEMENT_START_TIME (pipeline);
last_start_time = pipeline->priv->last_start_time;
pipeline->priv->last_start_time = start_time;
/* see if we need to update the clock */
update_clock = pipeline->priv->update_clock;
pipeline->priv->update_clock = FALSE;
delay = pipeline->delay;
GST_OBJECT_UNLOCK (element);
/* running time changed, either with a PAUSED or a flush, we need to check
* if there is a new clock & update the base time */
/* only do this for top-level, however */
if (GST_OBJECT_PARENT (element) == NULL &&
(update_clock || last_start_time != start_time)) {
GST_DEBUG_OBJECT (pipeline, "Need to update start_time");
/* when going to PLAYING, select a clock when needed. If we just got
* flushed, we don't reselect the clock. */
if (update_clock) {
GST_DEBUG_OBJECT (pipeline, "Need to update clock.");
clock = gst_element_provide_clock (element);
} else {
GST_DEBUG_OBJECT (pipeline,
"Don't need to update clock, using old clock.");
/* only try to ref if cur_clock is not NULL */
if (cur_clock)
gst_object_ref (cur_clock);
clock = cur_clock;
}
if (clock) {
now = gst_clock_get_time (clock);
} else {
GST_DEBUG_OBJECT (pipeline, "no clock, using base time of NONE");
now = GST_CLOCK_TIME_NONE;
}
if (clock != cur_clock) {
/* now distribute the clock (which could be NULL). If some
* element refuses the clock, this will return FALSE and
* we effectively fail the state change. */
if (!gst_element_set_clock (element, clock))
goto invalid_clock;
/* if we selected and distributed a new clock, let the app
* know about it */
gst_element_post_message (element,
gst_message_new_new_clock (GST_OBJECT_CAST (element), clock));
}
if (clock)
gst_object_unref (clock);
if (start_time != GST_CLOCK_TIME_NONE && now != GST_CLOCK_TIME_NONE) {
GstClockTime new_base_time = now - start_time + delay;
GST_DEBUG_OBJECT (element,
"start_time=%" GST_TIME_FORMAT ", now=%" GST_TIME_FORMAT
", base_time %" GST_TIME_FORMAT,
GST_TIME_ARGS (start_time), GST_TIME_ARGS (now),
GST_TIME_ARGS (new_base_time));
gst_element_set_base_time (element, new_base_time);
} else {
GST_DEBUG_OBJECT (pipeline,
"NOT adjusting base_time because start_time is NONE");
}
} else {
GST_DEBUG_OBJECT (pipeline,
"NOT adjusting base_time because we selected one before");
}
if (cur_clock)
gst_object_unref (cur_clock);
break;
}
case GST_STATE_CHANGE_PLAYING_TO_PAUSED:
{
/* we take a start_time snapshot before calling the children state changes
* so that they know about when the pipeline PAUSED. */
pipeline_update_start_time (element);
break;
}
case GST_STATE_CHANGE_PAUSED_TO_READY:
reset_start_time (pipeline, 0);
break;
case GST_STATE_CHANGE_READY_TO_NULL:
break;
}
result = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
switch (transition) {
case GST_STATE_CHANGE_NULL_TO_READY:
break;
case GST_STATE_CHANGE_READY_TO_PAUSED:
break;
case GST_STATE_CHANGE_PAUSED_TO_PLAYING:
break;
case GST_STATE_CHANGE_PLAYING_TO_PAUSED:
{
/* Take a new snapshot of the start_time after calling the state change on
* all children. This will be the running_time of the pipeline when we go
* back to PLAYING */
pipeline_update_start_time (element);
break;
}
case GST_STATE_CHANGE_PAUSED_TO_READY:
break;
case GST_STATE_CHANGE_READY_TO_NULL:
{
GstBus *bus;
gboolean auto_flush;
/* grab some stuff before we release the lock to flush out the bus */
GST_OBJECT_LOCK (element);
if ((bus = element->bus))
gst_object_ref (bus);
auto_flush = pipeline->priv->auto_flush_bus;
GST_OBJECT_UNLOCK (element);
if (bus) {
if (auto_flush) {
gst_bus_set_flushing (bus, TRUE);
} else {
GST_INFO_OBJECT (element, "not flushing bus, auto-flushing disabled");
}
gst_object_unref (bus);
}
break;
}
}
return result;
/* ERRORS */
invalid_clock:
{
/* we generate this error when the selected clock was not
* accepted by some element */
GST_ELEMENT_ERROR (pipeline, CORE, CLOCK,
(_("Selected clock cannot be used in pipeline.")),
("Pipeline cannot operate with selected clock"));
GST_DEBUG_OBJECT (pipeline,
"Pipeline cannot operate with selected clock %p", clock);
if (clock)
gst_object_unref (clock);
return GST_STATE_CHANGE_FAILURE;
}
}
