/* Must be called with object lock */
static void
gst_timecodestamper_reset_timecode (GstTimeCodeStamper * timecodestamper)
{
GDateTime *jam = NULL;
if (timecodestamper->first_tc &&
timecodestamper->first_tc->config.latest_daily_jam)
jam = g_date_time_ref (timecodestamper->first_tc->config.latest_daily_jam);
else if (timecodestamper->current_tc->config.latest_daily_jam)
jam =
g_date_time_ref (timecodestamper->current_tc->config.latest_daily_jam);
gst_video_time_code_clear (timecodestamper->current_tc);
/* FIXME: What if the buffer doesn't contain both top and bottom fields? */
gst_video_time_code_init (timecodestamper->current_tc,
timecodestamper->vinfo.fps_n,
timecodestamper->vinfo.fps_d,
jam,
timecodestamper->vinfo.interlace_mode ==
GST_VIDEO_INTERLACE_MODE_PROGRESSIVE ? 0 :
GST_VIDEO_TIME_CODE_FLAGS_INTERLACED, 0, 0, 0, 0, 0);
if (jam)
g_date_time_unref (jam);
if (timecodestamper->first_tc) {
timecodestamper->current_tc->hours = timecodestamper->first_tc->hours;
timecodestamper->current_tc->minutes = timecodestamper->first_tc->minutes;
timecodestamper->current_tc->seconds = timecodestamper->first_tc->seconds;
timecodestamper->current_tc->frames = timecodestamper->first_tc->frames;
timecodestamper->current_tc->field_count =
timecodestamper->first_tc->field_count;
}
gst_timecodestamper_set_drop_frame (timecodestamper);
}
static GstFlowReturn
gst_timecodestamper_transform_ip (GstBaseTransform * vfilter,
GstBuffer * buffer)
{
GstTimeCodeStamper *timecodestamper = GST_TIME_CODE_STAMPER (vfilter);
GstClockTime ref_time;
GST_OBJECT_LOCK (timecodestamper);
if (gst_buffer_get_video_time_code_meta (buffer)
&& !timecodestamper->override_existing) {
GST_OBJECT_UNLOCK (timecodestamper);
return GST_FLOW_OK;
} else if (timecodestamper->override_existing) {
gst_buffer_foreach_meta (buffer, remove_timecode_meta, NULL);
}
if (timecodestamper->source_clock != NULL) {
if (timecodestamper->current_tc->hours == 0
&& timecodestamper->current_tc->minutes == 0
&& timecodestamper->current_tc->seconds == 0
&& timecodestamper->current_tc->frames == 0) {
guint64 hours, minutes, seconds, frames;
/* Daily jam time */
ref_time = gst_clock_get_time (timecodestamper->source_clock);
ref_time = ref_time % (24 * 60 * 60 * GST_SECOND);
hours = ref_time / (GST_SECOND * 60 * 60);
ref_time -= hours * GST_SECOND * 60 * 60;
minutes = ref_time / (GST_SECOND * 60);
ref_time -= minutes * GST_SECOND * 60;
seconds = ref_time / GST_SECOND;
ref_time -= seconds * GST_SECOND;
/* Converting to frames for the whole ref_time might be inaccurate in case
* we have a drop frame timecode */
frames = gst_util_uint64_scale (ref_time, timecodestamper->vinfo.fps_n,
timecodestamper->vinfo.fps_d * GST_SECOND);
GST_DEBUG_OBJECT (timecodestamper,
"Initializing with %" G_GUINT64_FORMAT ":%" G_GUINT64_FORMAT ":%"
G_GUINT64_FORMAT ":%" G_GUINT64_FORMAT "", hours, minutes, seconds,
frames);
gst_video_time_code_init (timecodestamper->current_tc,
timecodestamper->vinfo.fps_n,
timecodestamper->vinfo.fps_d,
NULL,
timecodestamper->vinfo.interlace_mode ==
GST_VIDEO_INTERLACE_MODE_PROGRESSIVE ? 0 :
GST_VIDEO_TIME_CODE_FLAGS_INTERLACED, hours, minutes, seconds, 0, 0);
gst_timecodestamper_set_drop_frame (timecodestamper);
/* Do not use frames when initializing because maybe we have drop frame */
gst_video_time_code_add_frames (timecodestamper->current_tc, frames);
}
} else if (timecodestamper->source_clock == NULL) {
GstClockTime timecode_time;
timecode_time =
gst_video_time_code_nsec_since_daily_jam (timecodestamper->current_tc);
ref_time =
gst_segment_to_stream_time (&vfilter->segment, GST_FORMAT_TIME,
buffer->pts);
if (timecode_time != GST_CLOCK_TIME_NONE && ref_time != GST_CLOCK_TIME_NONE
&& ((timecode_time > ref_time && timecode_time - ref_time > GST_SECOND)
|| (ref_time > timecode_time
&& ref_time - timecode_time > GST_SECOND))) {
gchar *tc_str =
gst_video_time_code_to_string (timecodestamper->current_tc);
GST_WARNING_OBJECT (timecodestamper,
"Time code %s (stream time %" GST_TIME_FORMAT
") has drifted more than one second from stream time %"
GST_TIME_FORMAT, tc_str, GST_TIME_ARGS (timecode_time),
GST_TIME_ARGS (ref_time));
g_free (tc_str);
}
}
gst_buffer_add_video_time_code_meta (buffer, timecodestamper->current_tc);
gst_video_time_code_increment_frame (timecodestamper->current_tc);
GST_OBJECT_UNLOCK (timecodestamper);
return GST_FLOW_OK;
}
static gboolean
gst_timecodestamper_sink_event (GstBaseTransform * trans, GstEvent * event)
{
gboolean ret = FALSE;
GstTimeCodeStamper *timecodestamper = GST_TIME_CODE_STAMPER (trans);
GST_DEBUG_OBJECT (trans, "received event %" GST_PTR_FORMAT, event);
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_SEGMENT:
{
GstSegment segment;
guint64 frames;
gchar *tc_str;
gboolean notify = FALSE;
GST_OBJECT_LOCK (timecodestamper);
gst_event_copy_segment (event, &segment);
if (segment.format != GST_FORMAT_TIME) {
GST_OBJECT_UNLOCK (timecodestamper);
GST_ERROR_OBJECT (timecodestamper, "Invalid segment format");
return FALSE;
}
if (GST_VIDEO_INFO_FORMAT (&timecodestamper->vinfo) ==
GST_VIDEO_FORMAT_UNKNOWN) {
GST_ERROR_OBJECT (timecodestamper,
"Received segment event without caps");
GST_OBJECT_UNLOCK (timecodestamper);
return FALSE;
}
if (timecodestamper->first_tc_now && !timecodestamper->first_tc) {
GDateTime *dt = g_date_time_new_now_local ();
GstVideoTimeCode *tc;
gst_timecodestamper_set_drop_frame (timecodestamper);
tc = gst_video_time_code_new_from_date_time (timecodestamper->
vinfo.fps_n, timecodestamper->vinfo.fps_d, dt,
timecodestamper->current_tc->config.flags, 0);
g_date_time_unref (dt);
timecodestamper->first_tc = tc;
notify = TRUE;
}
frames =
gst_util_uint64_scale (segment.time, timecodestamper->vinfo.fps_n,
timecodestamper->vinfo.fps_d * GST_SECOND);
gst_timecodestamper_reset_timecode (timecodestamper);
gst_video_time_code_add_frames (timecodestamper->current_tc, frames);
GST_DEBUG_OBJECT (timecodestamper,
"Got %" G_GUINT64_FORMAT " frames when segment time is %"
GST_TIME_FORMAT, frames, GST_TIME_ARGS (segment.time));
tc_str = gst_video_time_code_to_string (timecodestamper->current_tc);
GST_DEBUG_OBJECT (timecodestamper, "New timecode is %s", tc_str);
g_free (tc_str);
GST_OBJECT_UNLOCK (timecodestamper);
if (notify)
g_object_notify (G_OBJECT (timecodestamper), "first-timecode");
break;
}
case GST_EVENT_CAPS:
{
GstCaps *caps;
GST_OBJECT_LOCK (timecodestamper);
gst_event_parse_caps (event, &caps);
if (!gst_video_info_from_caps (&timecodestamper->vinfo, caps)) {
GST_OBJECT_UNLOCK (timecodestamper);
return FALSE;
}
gst_timecodestamper_reset_timecode (timecodestamper);
GST_OBJECT_UNLOCK (timecodestamper);
break;
}
default:
break;
}
ret =
GST_BASE_TRANSFORM_CLASS (gst_timecodestamper_parent_class)->sink_event
(trans, event);
return ret;
}
