mirrors/gstreamer
mirrors/gstreamer
1
1
Fork 0
mirror of https://gitlab.freedesktop.org/gstreamer/gstreamer.git synced 2024-11-26 11:41:09 +00:00
Code Issues 1 Projects Releases Wiki Activity

gst/gstsegment.c: Also accumulate time correctly when doing reverse playback. Fixes #488201,

Browse source 
Original commit message from CVS:
* gst/gstsegment.c: (gst_segment_set_newsegment_full),
(gst_segment_to_stream_time), (gst_segment_to_running_time):
Also accumulate time correctly when doing reverse playback. Fixes
#488201,
When converting to running and stream time, use default values for
start/stop/time/accum when comparing different formats. Fixes #494245.
* libs/gst/base/gstbasesink.c: (gst_base_sink_get_sync_times):
Do running/stream time in TIME format.
* tests/check/gst/gstsegment.c: (GST_START_TEST),
(gst_segment_suite):
2 new unit tests for segment accumulation.
This commit is contained in:
Wim Taymans 2007-11-09 11:56:41 +00:00
parent def6b4bb66
commit c28238d8fe
4 changed files with 233 additions and 24 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

16
ChangeLog
View file

@ -1,3 +1,19 @@
2007-11-09 Wim Taymans <wim.taymans@gmail.com>
* gst/gstsegment.c: (gst_segment_set_newsegment_full),
(gst_segment_to_stream_time), (gst_segment_to_running_time):
Also accumulate time correctly when doing reverse playback. Fixes
#488201,
When converting to running and stream time, use default values for
start/stop/time/accum when comparing different formats. Fixes #494245.
* libs/gst/base/gstbasesink.c: (gst_base_sink_get_sync_times):
Do running/stream time in TIME format.
* tests/check/gst/gstsegment.c: (GST_START_TEST),
(gst_segment_suite):
2 new unit tests for segment accumulation.
2007-11-07 Tim-Philipp Müller <tim at centricular dot net>
* gst/gst.c: (init_pre):

78
gst/gstsegment.c
View file

@ -443,12 +443,21 @@ gst_segment_set_newsegment_full (GstSegment * segment, gboolean update,
g_return_if_fail (segment->format == format);
if (update) {
/* an update to the current segment is done, elapsed time is
* difference between the old start and new start. */
if (start > segment->start)
duration = start - segment->start;
else
duration = 0;
if (segment->rate > 0.0) {
/* an update to the current segment is done, elapsed time is
* difference between the old start and new start. */
if (start > segment->start)
duration = start - segment->start;
else
duration = 0;
} else {
/* for negative rates, the elapsed duration is the diff between the stop
* positions */
if (stop != -1 && stop < segment->stop)
duration = segment->stop - stop;
else
duration = 0;
}
} else {
/* the new segment has to be aligned with the old segment.
* We first update the accumulated time of the previous
@ -508,7 +517,7 @@ gint64
gst_segment_to_stream_time (GstSegment * segment, GstFormat format,
gint64 position)
{
gint64 result;
gint64 result, start, stop, time;
gdouble abs_applied_rate;
g_return_val_if_fail (segment != NULL, -1);
@ -519,23 +528,33 @@ gst_segment_to_stream_time (GstSegment * segment, GstFormat format,
if (G_UNLIKELY (segment->format == GST_FORMAT_UNDEFINED))
segment->format = format;
else
g_return_val_if_fail (segment->format == format, -1);
/* if we have the position for the same format as the segment, we can compare
* the start and stop values, otherwise we assume 0 and -1 */
if (segment->format == format) {
start = segment->start;
stop = segment->stop;
time = segment->time;
} else {
start = 0;
stop = -1;
time = 0;
}
/* outside of the segment boundary stop */
if (G_UNLIKELY (segment->stop != -1 && position > segment->stop))
if (G_UNLIKELY (stop != -1 && position > stop))
return -1;
/* before the segment boundary */
if (G_UNLIKELY (position < segment->start))
if (G_UNLIKELY (position < start))
return -1;
/* time must be known */
if (G_UNLIKELY (segment->time == -1))
if (G_UNLIKELY (time == -1))
return -1;
/* bring to uncorrected position in segment */
result = position - segment->start;
result = position - start;
abs_applied_rate = ABS (segment->applied_rate);
@ -546,11 +565,11 @@ gst_segment_to_stream_time (GstSegment * segment, GstFormat format,
/* add or subtract from segment time based on applied rate */
if (segment->applied_rate > 0.0) {
/* correct for segment time */
result += segment->time;
result += time;
} else {
/* correct for segment time, clamp at 0 */
if (segment->time > result)
result = segment->time - result;
if (time > result)
result = time - result;
else
result = 0;
}
@ -583,6 +602,7 @@ gst_segment_to_running_time (GstSegment * segment, GstFormat format,
gint64 position)
{
gint64 result;
gint64 start, stop, accum;
g_return_val_if_fail (segment != NULL, -1);
@ -591,28 +611,38 @@ gst_segment_to_running_time (GstSegment * segment, GstFormat format,
if (G_UNLIKELY (segment->format == GST_FORMAT_UNDEFINED))
segment->format = format;
else if (segment->accum)
g_return_val_if_fail (segment->format == format, -1);
/* if we have the position for the same format as the segment, we can compare
* the start and stop values, otherwise we assume 0 and -1 */
if (segment->format == format) {
start = segment->start;
stop = segment->stop;
accum = segment->accum;
} else {
start = 0;
stop = -1;
accum = 0;
}
/* before the segment boundary */
if (G_UNLIKELY (position < segment->start))
if (G_UNLIKELY (position < start))
return -1;
if (segment->rate > 0.0) {
/* outside of the segment boundary stop */
if (G_UNLIKELY (segment->stop != -1 && position > segment->stop))
if (G_UNLIKELY (stop != -1 && position > stop))
return -1;
/* bring to uncorrected position in segment */
result = position - segment->start;
result = position - start;
} else {
/* cannot continue if no stop position set or outside of
* the segment. */
if (G_UNLIKELY (segment->stop == -1 || position > segment->stop))
if (G_UNLIKELY (stop == -1 || position > stop))
return -1;
/* bring to uncorrected position in segment */
result = segment->stop - position;
result = stop - position;
}
/* scale based on the rate, avoid division by and conversion to
@ -621,7 +651,7 @@ gst_segment_to_running_time (GstSegment * segment, GstFormat format,
result /= segment->abs_rate;
/* correct for accumulated segments */
result += segment->accum;
result += accum;
return result;
}

2
libs/gst/base/gstbasesink.c
View file

@ -1341,6 +1341,8 @@ gst_base_sink_get_sync_times (GstBaseSink * basesink, GstMiniObject * obj,
if (G_UNLIKELY (format != GST_FORMAT_TIME)) {
cstart = start;
cstop = stop;
/* do running and stream time in TIME format */
format = GST_FORMAT_TIME;
goto do_times;
}

161
tests/check/gst/gstsegment.c
View file

@ -1334,6 +1334,165 @@ GST_START_TEST (segment_newsegment_runningtime)
GST_END_TEST;
/* mess with the segment structure in the time format */
GST_START_TEST (segment_newsegment_accum)
{
GstSegment segment;
gint64 result;
gst_segment_init (&segment, GST_FORMAT_TIME);
/***************************
* Normal reverse segment
***************************/
gst_segment_set_newsegment_full (&segment, FALSE, -1.0, 1.0,
GST_FORMAT_TIME, 0, 200, 0);
fail_unless (segment.rate == -1.0);
fail_unless (segment.applied_rate == 1.0);
fail_unless (segment.format == GST_FORMAT_TIME);
fail_unless (segment.flags == 0);
fail_unless (segment.start == 0);
fail_unless (segment.stop == 200);
fail_unless (segment.time == 0);
fail_unless (segment.accum == 0);
fail_unless (segment.last_stop == 0);
fail_unless (segment.duration == -1);
/* invalid time gives invalid result */
result = gst_segment_to_running_time (&segment, GST_FORMAT_TIME, -1);
fail_unless (result == -1);
result = gst_segment_to_running_time (&segment, GST_FORMAT_TIME, 200);
fail_unless (result == 0);
result = gst_segment_to_running_time (&segment, GST_FORMAT_TIME, 150);
fail_unless (result == 50);
/* update segment, this accumulates 50 from the previous segment. */
gst_segment_set_newsegment_full (&segment, TRUE, -2.0, 1.0,
GST_FORMAT_TIME, 0, 150, 0);
fail_unless (segment.rate == -2.0);
fail_unless (segment.applied_rate == 1.0);
fail_unless (segment.format == GST_FORMAT_TIME);
fail_unless (segment.flags == 0);
fail_unless (segment.start == 0);
fail_unless (segment.stop == 150);
fail_unless (segment.time == 0);
fail_unless (segment.accum == 50);
fail_unless (segment.last_stop == 0);
fail_unless (segment.duration == -1);
result = gst_segment_to_running_time (&segment, GST_FORMAT_TIME, 150);
fail_unless (result == 50);
/* 50 accumulated + 50 / 2 */
result = gst_segment_to_running_time (&segment, GST_FORMAT_TIME, 100);
fail_unless (result == 75);
/* update segment, this does not accumulate anything. */
gst_segment_set_newsegment_full (&segment, TRUE, 1.0, 1.0,
GST_FORMAT_TIME, 100, 200, 100);
fail_unless (segment.rate == 1.0);
fail_unless (segment.applied_rate == 1.0);
fail_unless (segment.format == GST_FORMAT_TIME);
fail_unless (segment.flags == 0);
fail_unless (segment.start == 100);
fail_unless (segment.stop == 200);
fail_unless (segment.time == 100);
fail_unless (segment.accum == 50);
fail_unless (segment.last_stop == 100);
fail_unless (segment.duration == -1);
result = gst_segment_to_running_time (&segment, GST_FORMAT_TIME, 100);
fail_unless (result == 50);
result = gst_segment_to_running_time (&segment, GST_FORMAT_TIME, 150);
fail_unless (result == 100);
}
GST_END_TEST;
/* mess with the segment structure in the time format */
GST_START_TEST (segment_newsegment_accum2)
{
GstSegment segment;
gint64 result;
gst_segment_init (&segment, GST_FORMAT_TIME);
/***************************
* Normal reverse segment
***************************/
gst_segment_set_newsegment_full (&segment, FALSE, -1.0, 1.0,
GST_FORMAT_TIME, 0, 200, 0);
fail_unless (segment.rate == -1.0);
fail_unless (segment.applied_rate == 1.0);
fail_unless (segment.format == GST_FORMAT_TIME);
fail_unless (segment.flags == 0);
fail_unless (segment.start == 0);
fail_unless (segment.stop == 200);
fail_unless (segment.time == 0);
fail_unless (segment.accum == 0);
fail_unless (segment.last_stop == 0);
fail_unless (segment.duration == -1);
/* invalid time gives invalid result */
result = gst_segment_to_running_time (&segment, GST_FORMAT_TIME, -1);
fail_unless (result == -1);
result = gst_segment_to_running_time (&segment, GST_FORMAT_TIME, 200);
fail_unless (result == 0);
result = gst_segment_to_running_time (&segment, GST_FORMAT_TIME, 150);
fail_unless (result == 50);
/* close segment, this accumulates nothing. */
gst_segment_set_newsegment_full (&segment, TRUE, -1.0, 1.0,
GST_FORMAT_TIME, 150, 200, 0);
fail_unless (segment.rate == -1.0);
fail_unless (segment.applied_rate == 1.0);
fail_unless (segment.format == GST_FORMAT_TIME);
fail_unless (segment.flags == 0);
fail_unless (segment.start == 150);
fail_unless (segment.stop == 200);
fail_unless (segment.time == 0);
fail_unless (segment.accum == 0);
fail_unless (segment.last_stop == 150);
fail_unless (segment.duration == -1);
/* new segment, this accumulates 50. */
gst_segment_set_newsegment_full (&segment, FALSE, 1.0, 1.0,
GST_FORMAT_TIME, 150, 300, 150);
fail_unless (segment.rate == 1.0);
fail_unless (segment.applied_rate == 1.0);
fail_unless (segment.format == GST_FORMAT_TIME);
fail_unless (segment.flags == 0);
fail_unless (segment.start == 150);
fail_unless (segment.stop == 300);
fail_unless (segment.time == 150);
fail_unless (segment.accum == 50);
fail_unless (segment.last_stop == 150);
fail_unless (segment.duration == -1);
/* invalid time gives invalid result */
result = gst_segment_to_running_time (&segment, GST_FORMAT_TIME, -1);
fail_unless (result == -1);
result = gst_segment_to_running_time (&segment, GST_FORMAT_TIME, 150);
fail_unless (result == 50);
result = gst_segment_to_running_time (&segment, GST_FORMAT_TIME, 200);
fail_unless (result == 100);
}
GST_END_TEST;
Suite *
gst_segment_suite (void)
{
@ -1353,6 +1512,8 @@ gst_segment_suite (void)
tcase_add_test (tc_chain, segment_newsegment_streamtime_applied_rate);
tcase_add_test (tc_chain, segment_newsegment_streamtime_applied_rate_rate);
tcase_add_test (tc_chain, segment_newsegment_runningtime);
tcase_add_test (tc_chain, segment_newsegment_accum);
tcase_add_test (tc_chain, segment_newsegment_accum2);
return s;
}