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libgstvideo: Add force key unit events
This commit is contained in:
Andoni Morales Alastruey
Alessandro Decina
parent
0a841f6712
commit
df44e771f1
2 changed files with 206 additions and 0 deletions
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@ -2330,3 +2330,188 @@ gst_video_parse_caps_palette (GstCaps * caps)
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return p;
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}
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#define GST_VIDEO_EVENT_FORCE_KEY_UNIT_NAME "GstForceKeyUnit"
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/**
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* gst_video_event_new_downstream_force_key_unit:
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* @timestamp: #GstClockTime value with the timestamp of the buffer that triggered the
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* event, or GST_CLOCK_TIME_NONE
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* @streamtime: #GstClockTime value with the stream position that triggered the event,
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* or GST_CLOCK_TIME_NONE
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* @runningtime: #GstClockTime with the running time of the stream when the event was
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* triggered, or GST_CLOCK_TIME_NONE
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* @all-headers: boolean to send all headers, including those in the caps or
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* those sent at the start of the stream.
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* @count: integer with the count of forced key units
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*
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* Creates a new downstream Force Key Unit event.
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*
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* To parse an event created by gst_video_event_new_downstream_force_key_unit() use
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* gst_video_event_parse_downstream_force_key_unit().
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*
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* Returns: The new GstEvent
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* Since: 0.10.35
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*/
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GstEvent *
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gst_video_event_new_downstream_force_key_unit (GstClockTime timestamp,
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GstClockTime streamtime, GstClockTime runningtime, gboolean all_headers,
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guint count)
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{
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GstEvent *force_key_unit_event;
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GstStructure *s;
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s = gst_structure_new (GST_VIDEO_EVENT_FORCE_KEY_UNIT_NAME,
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"timestamp", G_TYPE_UINT64, timestamp,
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"stream-time", G_TYPE_UINT64, streamtime,
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"running-time", G_TYPE_UINT64, runningtime,
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"all-headers", G_TYPE_BOOLEAN, all_headers,
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"count", G_TYPE_UINT, count, NULL);
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force_key_unit_event = gst_event_new_custom (GST_EVENT_CUSTOM_DOWNSTREAM, s);
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return force_key_unit_event;
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}
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/**
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* gst_video_event_new_upstream_force_key_unit:
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* @all-headers: boolean to send all headers, including those in the caps or
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* those sent at the start of the stream.
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*
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* Creates a new upstream Force Key Unit event.
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*
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* To parse an event created by gst_video_event_new_upstream_force_key_unit() use
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* gst_video_event_parse_upstream_force_key_unit().
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*
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* Returns: The new GstEvent
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* Since: 0.10.35
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*/
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GstEvent *
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gst_video_event_new_upstream_force_key_unit (gboolean all_headers)
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{
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GstEvent *force_key_unit_event;
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GstStructure *s;
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s = gst_structure_new (GST_VIDEO_EVENT_FORCE_KEY_UNIT_NAME,
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"all-headers", G_TYPE_BOOLEAN, all_headers, NULL);
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force_key_unit_event = gst_event_new_custom (GST_EVENT_CUSTOM_UPSTREAM, s);
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return force_key_unit_event;
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}
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/**
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* gst_video_event_is_force_key_unit:
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* @event: A #GstEvent to check
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*
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* Checks if an event is a Force Key Unit event, wihout making the difference
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* from the upstream and downstream version
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*
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* Returns: %TRUE if the event is a valid Force Key Unit event
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* Since: 0.10.35
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*/
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gboolean
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gst_video_event_is_force_key_unit (GstEvent * event)
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{
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const GstStructure *s;
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g_return_val_if_fail (event != NULL, FALSE);
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if (GST_EVENT_TYPE (event) != GST_EVENT_CUSTOM_DOWNSTREAM &&
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GST_EVENT_TYPE (event) != GST_EVENT_CUSTOM_UPSTREAM)
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return FALSE; /* Not a force key unit event */
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s = gst_event_get_structure (event);
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if (s == NULL
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|| !gst_structure_has_name (s, GST_VIDEO_EVENT_FORCE_KEY_UNIT_NAME))
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return FALSE;
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return TRUE;
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}
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/**
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* gst_video_event_parse_downstream_force_key_unit:
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* @event: A #GstEvent to parse
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* @timestamp: #GstClockTime value with the timestamp of the buffer that triggered the
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* event, or GST_CLOCK_TIME_NONE
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* @stream_time: #GstClockTime value with the stream position that triggered the event,
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* or GST_CLOCK_TIME_NONE
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* @running_time: #GstClockTime with the running time of the stream when the event was
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* triggered, or GST_CLOCK_TIME_NONE
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* @all-headers: boolean to send all headers, including those in the caps or
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* those sent at the start of the stream
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* @count: integer with the count of forced key units
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*
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* Parse a #GstEvent, identify if it is a downstream Force Key Unit event, and
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* return the timestamp of the buffer that triggered the event, the stream-time
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* position that triggered this event and the running-time of the stream when
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* the event was triggered, wheter all headers should be resent and the count of
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* forced keyframes
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*
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* Create a downstream force key unit event using gst_video_event_new_downstream_force_key_unit()
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*
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* Returns: %TRUE if the event is a valid downstream force-key-unit event. %FALSE if not
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* Since: 0.10.35
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*/
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gboolean
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gst_video_event_parse_downstream_force_key_unit (GstEvent * event,
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GstClockTime * timestamp, GstClockTime * stream_time,
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GstClockTime * running_time, gboolean * all_headers, guint * count)
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{
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const GstStructure *s;
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g_return_val_if_fail (event != NULL, FALSE);
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if (GST_EVENT_TYPE (event) != GST_EVENT_CUSTOM_DOWNSTREAM)
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return FALSE; /* Not a force key unit event */
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s = gst_event_get_structure (event);
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if (s == NULL
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|| !gst_structure_has_name (s, GST_VIDEO_EVENT_FORCE_KEY_UNIT_NAME))
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return FALSE;
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if (!gst_structure_get_clock_time (s, "timestamp", &(*timestamp)))
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return FALSE; /* Not a force key unit event */
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if (!gst_structure_get_clock_time (s, "stream-time", &(*stream_time)))
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return FALSE; /* Not a force key unit event */
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if (!gst_structure_get_clock_time (s, "running-time", &(*running_time)))
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return FALSE; /* Not a force key unit event */
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if (!gst_structure_get_boolean (s, "all-headers", &(*all_headers)))
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return FALSE; /* Not a force key unit event */
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if (!gst_structure_get_uint (s, "count", &(*count)))
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return FALSE; /* Not a force key unit event */
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return TRUE;
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}
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/**
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* gst_video_event_parse_upstream_force_key_unit:
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* @event: A #GstEvent to parse
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* @all-headers: boolean to send all headers, including those in the caps or
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* those sent at the start of the stream.
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*
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* Parse a #GstEvent, identify if it is an upstream Force Key Unit event, and
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* return a if all headers should be resent.
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*
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* Create an upstream force key unit event using gst_video_event_new_upstream_force_key_unit()
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*
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* Returns: %TRUE if the event is a valid upstream force-key-unit event. %FALSE if not
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* Since: 0.10.35
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*/
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gboolean
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gst_video_event_parse_upstream_force_key_unit (GstEvent * event,
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gboolean * all_headers)
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{
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const GstStructure *s;
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g_return_val_if_fail (event != NULL, FALSE);
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if (GST_EVENT_TYPE (event) != GST_EVENT_CUSTOM_UPSTREAM)
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return FALSE; /* Not a force key unit event */
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s = gst_event_get_structure (event);
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if (s == NULL
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|| !gst_structure_has_name (s, GST_VIDEO_EVENT_FORCE_KEY_UNIT_NAME))
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return FALSE;
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if (!gst_structure_get_boolean (s, "all-headers", &(*all_headers)))
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return FALSE; /* Not a force key unit event */
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return TRUE;
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}
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@ -552,6 +552,27 @@ GstEvent * gst_video_event_new_still_frame (gboolean in_still);
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gboolean gst_video_event_parse_still_frame (GstEvent * event, gboolean * in_still);
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/* video force key unit event creation and parsing */
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GstEvent * gst_video_event_new_downstream_force_key_unit (GstClockTime timestamp,
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GstClockTime streamtime,
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GstClockTime runningtime,
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gboolean all_headers,
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guint count);
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gboolean gst_video_event_parse_downstream_force_key_unit (GstEvent * event,
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GstClockTime * timestamp,
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GstClockTime * streamtime,
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GstClockTime * runningtime,
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gboolean * all_headers,
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guint * count);
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GstEvent * gst_video_event_new_upstream_force_key_unit (gboolean all_headers);
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gboolean gst_video_event_parse_upstream_force_key_unit (GstEvent * event,
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gboolean * all_headers);
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gboolean gst_video_event_is_force_key_unit(GstEvent *event);
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/* convert/encode video frame from one format to another */
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