mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-07-02 04:35:55 +00:00
nle: Seek the whole stack on initialization
Instead of seeking each nleobject separately to setup new stack, wait for the whole stack to preroll and then seek that newly setup stack, leading to the same code path and seek 'tweaking' as when processing a seek on the composition (without stack changes). This is mandatory to properly handle filter that tweak segments to handle time remapping for example.
This commit is contained in:
Thibault Saunier
parent
17500f6836
commit
c63586e0a7
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@ -79,7 +79,7 @@ typedef enum
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} NleUpdateStackReason;
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static const char *UPDATE_PIPELINE_REASONS[] = {
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"Initialize", "Commit", "EOS", "Seek"
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"Initialize", "Commit", "EOS", "Seek", "None"
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};
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typedef struct
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@ -194,6 +194,8 @@ struct _NleCompositionPrivate
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/* 0 means that we already received the right caps or segment */
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gint seqnum_to_restart_task;
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gboolean waiting_serialized_query_or_buffer;
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GstEvent *stack_initialization_seek;
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volatile gboolean stack_initialization_seek_sent;
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gboolean tearing_down_stack;
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gboolean suppress_child_error;
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@ -258,7 +260,7 @@ static void _update_pipeline_func (NleComposition * comp,
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static void _commit_func (NleComposition * comp,
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UpdateCompositionData * ucompo);
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static GstEvent *get_new_seek_event (NleComposition * comp, gboolean initial,
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gboolean updatestoponly);
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gboolean updatestoponly, NleUpdateStackReason reason);
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static gboolean _nle_composition_add_object (NleComposition * comp,
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NleObject * object);
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static gboolean _nle_composition_remove_object (NleComposition * comp,
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@ -453,6 +455,22 @@ _start_task (NleComposition * comp)
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GST_OBJECT_UNLOCK (comp);
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}
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static gboolean
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_pause_task (NleComposition * comp)
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{
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GST_OBJECT_LOCK (comp);
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if (comp->task == NULL) {
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GST_INFO_OBJECT (comp, "No task set, it must have been stopped, returning");
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GST_OBJECT_UNLOCK (comp);
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return FALSE;
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}
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gst_task_pause (comp->task);
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GST_OBJECT_UNLOCK (comp);
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return TRUE;
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}
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static gboolean
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_stop_task (NleComposition * comp)
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{
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@ -546,16 +564,36 @@ _seek_pipeline_func (NleComposition * comp, SeekData * seekd)
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GstSeekType cur_type, stop_type;
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gint64 cur, stop;
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NleCompositionPrivate *priv = comp->priv;
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gboolean initializing_stack = priv->stack_initialization_seek == seekd->event;
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NleUpdateStackReason reason =
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initializing_stack ? COMP_UPDATE_STACK_NONE : COMP_UPDATE_STACK_ON_SEEK;
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GstClockTime segment_start, segment_stop;
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gboolean reverse;
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gst_event_parse_seek (seekd->event, &rate, &format, &flags,
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&cur_type, &cur, &stop_type, &stop);
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reverse = rate < 0;
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GST_DEBUG_OBJECT (seekd->comp,
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"start:%" GST_TIME_FORMAT " -- stop:%" GST_TIME_FORMAT " flags:%d",
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GST_TIME_ARGS (cur), GST_TIME_ARGS (stop), flags);
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if (!initializing_stack) {
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segment_start = cur;
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segment_stop = stop;
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} else {
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/* During plain playback (no seek), the segment->stop doesn't
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* evolve when going from stack to stack, only the start does
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* (in reverse playback, the logic is reversed) */
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segment_start = reverse ? priv->segment->start : cur;
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segment_stop = reverse ? stop : priv->segment->stop;
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}
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gst_segment_do_seek (priv->segment,
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rate, format, flags, cur_type, cur, stop_type, stop, NULL);
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rate, format, flags, cur_type, segment_start, stop_type, segment_stop,
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NULL);
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gst_segment_do_seek (priv->seek_segment,
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rate, format, flags, cur_type, cur, stop_type, stop, NULL);
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@ -576,8 +614,9 @@ _seek_pipeline_func (NleComposition * comp, SeekData * seekd)
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}
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#endif
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_post_start_composition_update (seekd->comp,
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gst_event_get_seqnum (seekd->event), COMP_UPDATE_STACK_ON_SEEK);
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if (!initializing_stack)
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_post_start_composition_update (seekd->comp,
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gst_event_get_seqnum (seekd->event), COMP_UPDATE_STACK_ON_SEEK);
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/* crop the segment start/stop values */
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/* Only crop segment start value if we don't have a default object */
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@ -587,15 +626,21 @@ _seek_pipeline_func (NleComposition * comp, SeekData * seekd)
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priv->segment->stop =
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MIN (priv->segment->stop, NLE_OBJECT_STOP (seekd->comp));
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priv->next_base_time = 0;
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comp->priv->flush_seqnum = comp->priv->seek_seqnum =
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gst_event_get_seqnum (seekd->event);
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seek_handling (seekd->comp, gst_event_get_seqnum (seekd->event),
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COMP_UPDATE_STACK_ON_SEEK);
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if (initializing_stack) {
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GST_INFO_OBJECT (seekd->comp, "Pausing task to run initializing seek.");
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_pause_task (seekd->comp);
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} else {
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priv->next_base_time = 0;
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comp->priv->flush_seqnum = comp->priv->seek_seqnum =
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gst_event_get_seqnum (seekd->event);
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}
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_post_start_composition_update_done (seekd->comp,
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gst_event_get_seqnum (seekd->event), COMP_UPDATE_STACK_ON_SEEK);
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seek_handling (seekd->comp, gst_event_get_seqnum (seekd->event), reason);
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if (!initializing_stack)
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_post_start_composition_update_done (seekd->comp,
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gst_event_get_seqnum (seekd->event), COMP_UPDATE_STACK_ON_SEEK);
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}
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/* Must be called with OBJECTS_LOCK taken */
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@ -838,7 +883,7 @@ _add_action_locked (NleComposition * comp, GCallback func,
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GST_INFO_OBJECT (comp, "Adding Action for function: %p:%s",
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action, GST_DEBUG_FUNCPTR_NAME (func));
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if (func == G_CALLBACK (_emit_commited_signal_func))
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if (priority == G_PRIORITY_HIGH)
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priv->actions = g_list_prepend (priv->actions, action);
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else
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priv->actions = g_list_append (priv->actions, action);
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@ -858,6 +903,17 @@ _add_action (NleComposition * comp, GCallback func,
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ACTIONS_UNLOCK (comp);
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}
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static SeekData *
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create_seek_data (NleComposition * comp, GstEvent * event)
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{
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SeekData *seekd = g_slice_new0 (SeekData);
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seekd->comp = comp;
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seekd->event = event;
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return seekd;
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}
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static void
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_add_seek_action (NleComposition * comp, GstEvent * event)
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{
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@ -904,11 +960,8 @@ _add_seek_action (NleComposition * comp, GstEvent * event)
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}
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}
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GST_DEBUG_OBJECT (comp, "Adding Action");
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seekd = g_slice_new0 (SeekData);
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seekd->comp = comp;
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seekd->event = event;
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GST_DEBUG_OBJECT (comp, "Adding seek Action");
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seekd = create_seek_data (comp, event);
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comp->priv->next_eos_seqnum = 0;
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comp->priv->real_eos_seqnum = 0;
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@ -1160,6 +1213,7 @@ nle_composition_dispose (GObject * object)
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g_list_free (priv->objects_stop);
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g_list_free_full (priv->actions, (GDestroyNotify) _remove_each_action);
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g_clear_object (&priv->stack_initialization_seek);
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nle_composition_reset_target_pad (comp);
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@ -1261,7 +1315,6 @@ nle_composition_reset (NleComposition * comp)
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nle_composition_reset_target_pad (comp);
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priv->initialized = FALSE;
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priv->send_stream_start = TRUE;
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priv->real_eos_seqnum = 0;
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priv->seek_seqnum = 0;
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priv->next_eos_seqnum = 0;
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@ -1280,8 +1333,33 @@ ghost_event_probe_handler (GstPad * ghostpad G_GNUC_UNUSED,
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NleCompositionPrivate *priv = comp->priv;
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GstEvent *event;
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if (GST_IS_BUFFER (info->data) ||
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(GST_IS_QUERY (info->data) && GST_QUERY_IS_SERIALIZED (info->data))) {
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if (GST_IS_BUFFER (info->data) || (GST_IS_QUERY (info->data)
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&& GST_QUERY_IS_SERIALIZED (info->data))) {
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if (priv->stack_initialization_seek) {
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if (g_atomic_int_compare_and_exchange
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(&priv->stack_initialization_seek_sent, FALSE, TRUE)) {
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_add_action (comp, G_CALLBACK (_seek_pipeline_func),
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create_seek_data (comp,
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gst_event_ref (priv->stack_initialization_seek)),
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G_PRIORITY_HIGH);
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GST_OBJECT_LOCK (comp);
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if (comp->task)
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gst_task_start (comp->task);
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GST_OBJECT_UNLOCK (comp);
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priv->send_stream_start =
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priv->updating_reason == COMP_UPDATE_STACK_INITIALIZE;
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}
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GST_DEBUG_OBJECT (comp,
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"Dropping %" GST_PTR_FORMAT " while sending initializing stack seek",
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info->data);
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return GST_PAD_PROBE_DROP;
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}
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if (priv->waiting_serialized_query_or_buffer) {
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GST_INFO_OBJECT (comp, "update_pipeline DONE");
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_restart_task (comp);
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@ -1299,6 +1377,12 @@ ghost_event_probe_handler (GstPad * ghostpad G_GNUC_UNUSED,
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if (_is_ready_to_restart_task (comp, event))
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_restart_task (comp);
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if (g_atomic_int_compare_and_exchange
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(&priv->stack_initialization_seek_sent, TRUE, FALSE)) {
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GST_INFO_OBJECT (comp, "Done seeking initialization stack.");
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gst_clear_event (&priv->stack_initialization_seek);
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}
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if (gst_event_get_seqnum (event) != comp->priv->flush_seqnum) {
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GST_INFO_OBJECT (comp, "Dropping FLUSH_STOP %d -- %d",
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gst_event_get_seqnum (event), priv->flush_seqnum);
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@ -1353,6 +1437,15 @@ ghost_event_probe_handler (GstPad * ghostpad G_GNUC_UNUSED,
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retval = GST_PAD_PROBE_DROP;
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}
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break;
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case GST_EVENT_CAPS:
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{
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if (priv->stack_initialization_seek) {
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GST_INFO_OBJECT (comp,
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"Waiting for preroll to send initializing seek, dropping caps.");
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return GST_PAD_PROBE_DROP;
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}
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break;
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}
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case GST_EVENT_SEGMENT:
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{
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guint64 rstart, rstop;
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@ -1361,6 +1454,11 @@ ghost_event_probe_handler (GstPad * ghostpad G_GNUC_UNUSED,
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GstEvent *event2;
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/* next_base_time */
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if (priv->stack_initialization_seek) {
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GST_INFO_OBJECT (comp, "Waiting for preroll to send initializing seek");
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return GST_PAD_PROBE_DROP;
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}
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if (_is_ready_to_restart_task (comp, event))
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_restart_task (comp);
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@ -1495,7 +1593,7 @@ nle_composition_commit_func (NleObject * object, gboolean recurse)
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*/
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static GstEvent *
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get_new_seek_event (NleComposition * comp, gboolean initial,
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gboolean updatestoponly)
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gboolean updatestoponly, NleUpdateStackReason reason)
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{
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GstSeekFlags flags = GST_SEEK_FLAG_ACCURATE | GST_SEEK_FLAG_FLUSH;
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gint64 start, stop;
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@ -1517,12 +1615,18 @@ get_new_seek_event (NleComposition * comp, gboolean initial,
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GST_TIME_FORMAT, GST_TIME_ARGS (priv->segment->stop),
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GST_TIME_ARGS (priv->current_stack_stop));
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start = GST_CLOCK_TIME_IS_VALID (priv->segment->start)
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? MAX (priv->segment->start, priv->current_stack_start)
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: priv->current_stack_start;
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stop = GST_CLOCK_TIME_IS_VALID (priv->segment->stop)
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? MIN (priv->segment->stop, priv->current_stack_stop)
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: priv->current_stack_stop;
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if (reason == COMP_UPDATE_STACK_INITIALIZE
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|| reason == COMP_UPDATE_STACK_ON_EOS) {
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start = priv->current_stack_start;
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stop = priv->current_stack_stop;
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} else {
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start = GST_CLOCK_TIME_IS_VALID (priv->segment->start)
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? MAX (priv->segment->start, priv->current_stack_start)
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: priv->current_stack_start;
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stop = GST_CLOCK_TIME_IS_VALID (priv->segment->stop)
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? MIN (priv->segment->stop, priv->current_stack_stop)
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: priv->current_stack_stop;
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}
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if (updatestoponly) {
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starttype = GST_SEEK_TYPE_NONE;
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@ -1673,6 +1777,7 @@ _seek_current_stack (NleComposition * comp, GstEvent * event,
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GST_INFO_OBJECT (comp, "Seeking itself %" GST_PTR_FORMAT, event);
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if (!peer) {
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gst_event_unref (event);
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GST_ERROR_OBJECT (comp, "Can't seek because no pad available - "
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"no children in the composition ready to be used, the duration is 0, "
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"or not committed yet");
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@ -1719,7 +1824,8 @@ seek_handling (NleComposition * comp, gint32 seqnum,
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update_pipeline (comp, comp->priv->segment->stop, seqnum,
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update_stack_reason);
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} else {
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GstEvent *toplevel_seek = get_new_seek_event (comp, FALSE, FALSE);
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GstEvent *toplevel_seek = get_new_seek_event (comp, FALSE, FALSE,
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update_stack_reason);
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gst_event_set_seqnum (toplevel_seek, seqnum);
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_set_real_eos_seqnum_from_seek (comp, toplevel_seek);
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@ -1873,7 +1979,6 @@ nle_composition_reset_target_pad (NleComposition * comp)
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nle_object_ghost_pad_set_target (NLE_OBJECT (comp),
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NLE_OBJECT_SRC (comp), NULL);
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priv->send_stream_start = TRUE;
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}
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/* nle_composition_ghost_pad_set_target:
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@ -2243,7 +2348,7 @@ get_clean_toplevel_stack (NleComposition * comp, GstClockTime * timestamp,
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return NULL;
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}
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GST_DEBUG ("start:%" GST_TIME_FORMAT ", stop:%" GST_TIME_FORMAT,
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GST_DEBUG_OBJECT (comp, "start:%" GST_TIME_FORMAT ", stop:%" GST_TIME_FORMAT,
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GST_TIME_ARGS (start), GST_TIME_ARGS (stop));
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if (stack) {
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@ -2366,6 +2471,7 @@ _restart_task (NleComposition * comp)
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comp->priv->seqnum_to_restart_task = 0;
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comp->priv->waiting_serialized_query_or_buffer = FALSE;
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gst_clear_event (&comp->priv->stack_initialization_seek);
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comp->priv->updating_reason = COMP_UPDATE_STACK_NONE;
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GST_OBJECT_LOCK (comp);
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@ -2817,7 +2923,6 @@ _relink_single_node (NleComposition * comp, GNode * node,
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NleObject *newparent;
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GNode *node_it;
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GstPad *srcpad = NULL, *sinkpad = NULL;
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GstEvent *translated_seek;
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if (G_UNLIKELY (!node))
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return;
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@ -2839,11 +2944,6 @@ _relink_single_node (NleComposition * comp, GNode * node,
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gst_bin_add (GST_BIN (comp->priv->current_bin), GST_ELEMENT (newobj));
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gst_element_sync_state_with_parent (GST_ELEMENT_CAST (newobj));
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translated_seek = nle_object_translate_incoming_seek (newobj,
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gst_event_ref (toplevel_seek));
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gst_element_send_event (GST_ELEMENT (newobj), translated_seek);
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/* link to parent if needed. */
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if (newparent) {
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_link_to_parent (comp, newobj, newparent);
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@ -2976,7 +3076,7 @@ beach:
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}
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static inline gboolean
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_activate_new_stack (NleComposition * comp)
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_activate_new_stack (NleComposition * comp, GstEvent * toplevel_seek)
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{
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GstPad *pad;
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GstElement *topelement;
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@ -2992,10 +3092,15 @@ _activate_new_stack (NleComposition * comp)
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GST_DEBUG_OBJECT (comp, "Nothing else in the composition"
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", update 'worked'");
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gst_event_unref (toplevel_seek);
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goto resync_state;
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}
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/* The stack is entirely ready, send seek out synchronously */
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/* The stack is entirely ready, stack initializing seek once ready */
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GST_INFO_OBJECT (comp, "Activating stack with seek: %" GST_PTR_FORMAT,
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toplevel_seek);
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comp->priv->stack_initialization_seek = toplevel_seek;
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topelement = GST_ELEMENT (priv->current->data);
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/* Get toplevel object source pad */
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pad = NLE_OBJECT_SRC (topelement);
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@ -3008,6 +3113,7 @@ _activate_new_stack (NleComposition * comp)
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GST_DEBUG_OBJECT (comp, "New stack activated!");
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resync_state:
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g_atomic_int_set (&priv->stack_initialization_seek_sent, FALSE);
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gst_element_set_locked_state (priv->current_bin, FALSE);
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GST_DEBUG ("going back to parent state");
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@ -3226,7 +3332,8 @@ update_pipeline (NleComposition * comp, GstClockTime currenttime, gint32 seqnum,
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}
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#endif
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toplevel_seek = get_new_seek_event (comp, TRUE, updatestoponly);
|
||||
toplevel_seek =
|
||||
get_new_seek_event (comp, TRUE, updatestoponly, update_reason);
|
||||
gst_event_set_seqnum (toplevel_seek, seqnum);
|
||||
_set_real_eos_seqnum_from_seek (comp, toplevel_seek);
|
||||
|
||||
|
|
@ -3236,7 +3343,7 @@ update_pipeline (NleComposition * comp, GstClockTime currenttime, gint32 seqnum,
|
|||
if (tear_down) {
|
||||
_dump_stack (comp, update_reason, stack);
|
||||
_deactivate_stack (comp, update_reason);
|
||||
_relink_new_stack (comp, stack, toplevel_seek);
|
||||
_relink_new_stack (comp, stack, gst_event_ref (toplevel_seek));
|
||||
}
|
||||
|
||||
/* Unlock all elements in new stack */
|
||||
|
|
@ -3258,24 +3365,17 @@ update_pipeline (NleComposition * comp, GstClockTime currenttime, gint32 seqnum,
|
|||
comp->priv->updating_reason = update_reason;
|
||||
comp->priv->seqnum_to_restart_task = seqnum;
|
||||
|
||||
GST_OBJECT_LOCK (comp);
|
||||
if (comp->task == NULL) {
|
||||
GST_INFO_OBJECT (comp,
|
||||
"No task set, it must have been stopped, returning");
|
||||
GST_OBJECT_UNLOCK (comp);
|
||||
return FALSE;
|
||||
if (!_pause_task (comp)) {
|
||||
gst_event_unref (toplevel_seek);
|
||||
return FALSE;
|
||||
}
|
||||
|
||||
gst_task_pause (comp->task);
|
||||
GST_OBJECT_UNLOCK (comp);
|
||||
}
|
||||
|
||||
/* Activate stack */
|
||||
if (tear_down)
|
||||
return _activate_new_stack (comp);
|
||||
else
|
||||
return _seek_current_stack (comp, toplevel_seek,
|
||||
_have_to_flush_downstream (update_reason));
|
||||
return _activate_new_stack (comp, toplevel_seek);
|
||||
return _seek_current_stack (comp, toplevel_seek,
|
||||
_have_to_flush_downstream (update_reason));
|
||||
}
|
||||
|
||||
static gboolean
|
||||
|
|
|
|||
|
|
@ -443,7 +443,7 @@ nle_source_send_event (GstElement * element, GstEvent * event)
|
|||
switch (GST_EVENT_TYPE (event)) {
|
||||
case GST_EVENT_SEEK:
|
||||
g_mutex_lock (&source->priv->seek_lock);
|
||||
source->priv->seek_event = event;
|
||||
gst_event_replace (&source->priv->seek_event, event);
|
||||
g_mutex_unlock (&source->priv->seek_lock);
|
||||
break;
|
||||
default:
|
||||
|
|
@ -459,6 +459,7 @@ ghost_seek_pad (GstElement * source, gpointer user_data)
|
|||
{
|
||||
NleSourcePrivate *priv = NLE_SOURCE (source)->priv;
|
||||
|
||||
g_assert (!NLE_OBJECT (source)->in_composition);
|
||||
g_mutex_lock (&priv->seek_lock);
|
||||
if (priv->seek_event) {
|
||||
GstEvent *seek_event = priv->seek_event;
|
||||
|
|
@ -482,7 +483,7 @@ pad_brobe_cb (GstPad * pad, GstPadProbeInfo * info, NleSource * source)
|
|||
GstPadProbeReturn res = GST_PAD_PROBE_OK;
|
||||
|
||||
GST_OBJECT_LOCK (source);
|
||||
if (!priv->areblocked) {
|
||||
if (!priv->areblocked && priv->seek_event) {
|
||||
GST_INFO_OBJECT (pad, "Blocked now, launching seek");
|
||||
priv->areblocked = TRUE;
|
||||
gst_element_call_async (GST_ELEMENT (source), ghost_seek_pad, NULL, NULL);
|
||||
|
|
@ -492,9 +493,6 @@ pad_brobe_cb (GstPad * pad, GstPadProbeInfo * info, NleSource * source)
|
|||
}
|
||||
|
||||
if (priv->probeid && GST_EVENT_SEQNUM (info->data) == priv->flush_seqnum) {
|
||||
GST_INFO_OBJECT (source, "Seeking now done: %" GST_PTR_FORMAT
|
||||
" - %d ? %d", info->data, GST_EVENT_SEQNUM (info->data),
|
||||
priv->flush_seqnum);
|
||||
priv->flush_seqnum = GST_SEQNUM_INVALID;
|
||||
priv->areblocked = FALSE;
|
||||
priv->probeid = 0;
|
||||
|
|
@ -526,33 +524,35 @@ nle_source_prepare (NleObject * object)
|
|||
return FALSE;
|
||||
}
|
||||
|
||||
if (object->in_composition == FALSE) {
|
||||
gst_element_send_event (GST_ELEMENT_CAST (parent),
|
||||
gst_event_new_seek (1.0, GST_FORMAT_TIME,
|
||||
GST_SEEK_FLAG_ACCURATE | GST_SEEK_FLAG_FLUSH,
|
||||
GST_SEEK_TYPE_SET, object->start, GST_SEEK_TYPE_SET, object->stop));
|
||||
}
|
||||
|
||||
GST_LOG_OBJECT (source, "srcpad:%p, dynamicpads:%d",
|
||||
object->srcpad, priv->dynamicpads);
|
||||
|
||||
if (!priv->staticpad && !(get_valid_src_pad (source, source->element, &pad))) {
|
||||
GST_DEBUG_OBJECT (source, "Couldn't find a valid source pad");
|
||||
gst_object_unref (parent);
|
||||
return FALSE;
|
||||
} else {
|
||||
if (priv->staticpad)
|
||||
pad = gst_object_ref (priv->staticpad);
|
||||
priv->ghostedpad = pad;
|
||||
}
|
||||
|
||||
if (priv->staticpad)
|
||||
pad = gst_object_ref (priv->staticpad);
|
||||
priv->ghostedpad = pad;
|
||||
|
||||
if (object->in_composition == FALSE) {
|
||||
g_mutex_lock (&source->priv->seek_lock);
|
||||
source->priv->seek_event =
|
||||
gst_event_new_seek (1.0, GST_FORMAT_TIME,
|
||||
GST_SEEK_FLAG_ACCURATE | GST_SEEK_FLAG_FLUSH,
|
||||
GST_SEEK_TYPE_SET, object->start, GST_SEEK_TYPE_SET, object->stop);
|
||||
g_mutex_unlock (&source->priv->seek_lock);
|
||||
GST_OBJECT_LOCK (source);
|
||||
priv->probeid = gst_pad_add_probe (pad,
|
||||
GST_PAD_PROBE_TYPE_BLOCK_DOWNSTREAM | GST_PAD_PROBE_TYPE_EVENT_FLUSH |
|
||||
GST_PAD_PROBE_TYPE_EVENT_DOWNSTREAM, (GstPadProbeCallback) pad_brobe_cb,
|
||||
source, NULL);
|
||||
GST_OBJECT_UNLOCK (source);
|
||||
gst_object_unref (pad);
|
||||
}
|
||||
|
||||
GST_LOG_OBJECT (source, "srcpad:%p, dynamicpads:%d",
|
||||
object->srcpad, priv->dynamicpads);
|
||||
|
||||
gst_object_unref (pad);
|
||||
gst_object_unref (parent);
|
||||
|
||||
return TRUE;
|
||||
|
|
|
|||
Loading…
Reference in a new issue