2 * Copyright (C) 2005 Wim Taymans <wim@fluendo.com>
4 * gstsegment.c: GstSegment subsystem
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Library General Public
8 * License as published by the Free Software Foundation; either
9 * version 2 of the License, or (at your option) any later version.
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Library General Public License for more details.
16 * You should have received a copy of the GNU Library General Public
17 * License along with this library; if not, write to the
18 * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
19 * Boston, MA 02110-1301, USA.
22 #include "gst_private.h"
27 #include "gstsegment.h"
31 * @short_description: Structure describing the configured region of interest
33 * @see_also: #GstEvent
35 * This helper structure holds the relevant values for tracking the region of
36 * interest in a media file, called a segment.
38 * The structure can be used for two purposes:
40 * <listitem><para>performing seeks (handling seek events)</para></listitem>
41 * <listitem><para>tracking playback regions (handling newsegment events)</para></listitem>
44 * The segment is usually configured by the application with a seek event which
45 * is propagated upstream and eventually handled by an element that performs the seek.
47 * The configured segment is then propagated back downstream with a newsegment event.
48 * This information is then used to clip media to the segment boundaries.
50 * A segment structure is initialized with gst_segment_init(), which takes a #GstFormat
51 * that will be used as the format of the segment values. The segment will be configured
52 * with a start value of 0 and a stop/duration of -1, which is undefined. The default
53 * rate and applied_rate is 1.0.
55 * The public duration field contains the duration of the segment. When using
56 * the segment for seeking, the start and time members should normally be left
57 * to their default 0 value. The stop position is left to -1 unless explicitly
58 * configured to a different value after a seek event.
60 * The current position in the segment should be set by changing the position
61 * member in the structure.
63 * For elements that perform seeks, the current segment should be updated with the
64 * gst_segment_do_seek() and the values from the seek event. This method will update
65 * all the segment fields. The position field will contain the new playback position.
66 * If the start_type was different from GST_SEEK_TYPE_NONE, playback continues from
67 * the position position, possibly with updated flags or rate.
69 * For elements that want to use #GstSegment to track the playback region,
70 * update the segment fields with the information from the newsegment event.
71 * The gst_segment_clip() method can be used to check and clip
72 * the media data to the segment boundaries.
74 * For elements that want to synchronize to the pipeline clock, gst_segment_to_running_time()
75 * can be used to convert a timestamp to a value that can be used to synchronize
76 * to the clock. This function takes into account the base as well as
77 * any rate or applied_rate conversions.
79 * For elements that need to perform operations on media data in stream_time,
80 * gst_segment_to_stream_time() can be used to convert a timestamp and the segment
81 * info to stream time (which is always between 0 and the duration of the stream).
86 * @segment: (transfer none): a #GstSegment
88 * Create a copy of given @segment.
90 * Free-function: gst_segment_free
92 * Returns: (transfer full): a new #GstSegment, free with gst_segment_free().
95 gst_segment_copy (const GstSegment * segment)
97 GstSegment *result = NULL;
100 result = (GstSegment *) g_slice_copy (sizeof (GstSegment), segment);
106 * gst_segment_copy_into:
107 * @src: (transfer none): a #GstSegment
108 * @dest: (transfer none): a #GstSegment
110 * Copy the contents of @src into @dest.
113 gst_segment_copy_into (const GstSegment * src, GstSegment * dest)
115 memcpy (dest, src, sizeof (GstSegment));
118 G_DEFINE_BOXED_TYPE (GstSegment, gst_segment,
119 (GBoxedCopyFunc) gst_segment_copy, (GBoxedFreeFunc) gst_segment_free);
124 * Allocate a new #GstSegment structure and initialize it using
125 * gst_segment_init().
127 * Free-function: gst_segment_free
129 * Returns: (transfer full): a new #GstSegment, free with gst_segment_free().
132 gst_segment_new (void)
136 result = g_slice_new0 (GstSegment);
137 gst_segment_init (result, GST_FORMAT_UNDEFINED);
144 * @segment: (in) (transfer full): a #GstSegment
146 * Free the allocated segment @segment.
149 gst_segment_free (GstSegment * segment)
151 g_slice_free (GstSegment, segment);
156 * @segment: a #GstSegment structure.
157 * @format: the format of the segment.
159 * The start/position fields are set to 0 and the stop/duration
160 * fields are set to -1 (unknown). The default rate of 1.0 and no
163 * Initialize @segment to its default values.
166 gst_segment_init (GstSegment * segment, GstFormat format)
168 g_return_if_fail (segment != NULL);
170 segment->flags = GST_SEGMENT_FLAG_NONE;
172 segment->applied_rate = 1.0;
173 segment->format = format;
179 segment->position = 0;
180 segment->duration = -1;
184 * gst_segment_do_seek:
185 * @segment: a #GstSegment structure.
186 * @rate: the rate of the segment.
187 * @format: the format of the segment.
188 * @flags: the segment flags for the segment
189 * @start_type: the seek method
190 * @start: the seek start value
191 * @stop_type: the seek method
192 * @stop: the seek stop value
193 * @update: boolean holding whether position was updated.
195 * Update the segment structure with the field values of a seek event (see
196 * gst_event_new_seek()).
198 * After calling this method, the segment field position and time will
199 * contain the requested new position in the segment. The new requested
200 * position in the segment depends on @rate and @start_type and @stop_type.
202 * For positive @rate, the new position in the segment is the new @segment
203 * start field when it was updated with a @start_type different from
204 * #GST_SEEK_TYPE_NONE. If no update was performed on @segment start position
205 * (#GST_SEEK_TYPE_NONE), @start is ignored and @segment position is
208 * For negative @rate, the new position in the segment is the new @segment
209 * stop field when it was updated with a @stop_type different from
210 * #GST_SEEK_TYPE_NONE. If no stop was previously configured in the segment, the
211 * duration of the segment will be used to update the stop position.
212 * If no update was performed on @segment stop position (#GST_SEEK_TYPE_NONE),
213 * @stop is ignored and @segment position is unmodified.
215 * The applied rate of the segment will be set to 1.0 by default.
216 * If the caller can apply a rate change, it should update @segment
217 * rate and applied_rate after calling this function.
219 * @update will be set to %TRUE if a seek should be performed to the segment
220 * position field. This field can be %FALSE if, for example, only the @rate
221 * has been changed but not the playback position.
223 * Returns: %TRUE if the seek could be performed.
226 gst_segment_do_seek (GstSegment * segment, gdouble rate,
227 GstFormat format, GstSeekFlags flags,
228 GstSeekType start_type, guint64 start,
229 GstSeekType stop_type, guint64 stop, gboolean * update)
231 gboolean update_stop, update_start;
232 guint64 position, base;
234 g_return_val_if_fail (rate != 0.0, FALSE);
235 g_return_val_if_fail (segment != NULL, FALSE);
236 g_return_val_if_fail (segment->format == format, FALSE);
238 update_start = update_stop = TRUE;
240 position = segment->position;
242 /* segment->start is never invalid */
243 switch (start_type) {
244 case GST_SEEK_TYPE_NONE:
245 /* no update to segment, take previous start */
246 start = segment->start;
247 update_start = FALSE;
249 case GST_SEEK_TYPE_SET:
250 /* start holds desired position, map -1 to the start */
254 case GST_SEEK_TYPE_END:
255 if (segment->duration != -1) {
256 /* add start to total length */
257 start = segment->duration + start;
259 /* no update if duration unknown */
260 start = segment->start;
261 update_start = FALSE;
265 /* bring in sane range */
266 if (segment->duration != -1)
267 start = MIN (start, segment->duration);
269 start = MAX ((gint64) start, 0);
271 /* stop can be -1 if we have not configured a stop. */
273 case GST_SEEK_TYPE_NONE:
274 stop = segment->stop;
277 case GST_SEEK_TYPE_SET:
278 /* stop holds required value */
280 case GST_SEEK_TYPE_END:
281 if (segment->duration != -1) {
282 stop = segment->duration + stop;
284 stop = segment->stop;
290 /* if we have a valid stop time, make sure it is clipped */
292 if (segment->duration != -1)
293 stop = CLAMP ((gint64) stop, 0, (gint64) segment->duration);
295 stop = MAX ((gint64) stop, 0);
298 /* we can't have stop before start */
301 GST_WARNING ("segment update failed: start(%" G_GUINT64_FORMAT
302 ") > stop(%" G_GUINT64_FORMAT ")", start, stop);
303 g_return_val_if_fail (start <= stop, FALSE);
308 if (flags & GST_SEEK_FLAG_FLUSH) {
309 /* flush resets the running_time */
312 /* make sure the position is inside the segment start/stop */
313 position = CLAMP (position, segment->start, segment->stop);
315 /* remember the elapsed time */
316 base = gst_segment_to_running_time (segment, format, position);
317 GST_DEBUG ("updated segment.base: %" G_GUINT64_FORMAT, base);
320 if (update_start && rate > 0.0) {
323 if (update_stop && rate < 0.0) {
327 if (segment->duration != -1)
328 position = segment->duration;
334 /* set update arg to reflect update of position */
336 *update = position != segment->position;
338 /* update new values */
339 /* be explicit about our GstSeekFlag -> GstSegmentFlag conversion */
340 segment->flags = GST_SEGMENT_FLAG_NONE;
341 if ((flags & GST_SEEK_FLAG_FLUSH) != 0)
342 segment->flags |= GST_SEGMENT_FLAG_RESET;
343 if ((flags & GST_SEEK_FLAG_TRICKMODE) != 0)
344 segment->flags |= GST_SEGMENT_FLAG_TRICKMODE;
345 if ((flags & GST_SEEK_FLAG_SEGMENT) != 0)
346 segment->flags |= GST_SEGMENT_FLAG_SEGMENT;
347 if ((flags & GST_SEEK_FLAG_TRICKMODE_KEY_UNITS) != 0)
348 segment->flags |= GST_SEGMENT_FLAG_TRICKMODE_KEY_UNITS;
349 if ((flags & GST_SEEK_FLAG_TRICKMODE_NO_AUDIO) != 0)
350 segment->flags |= GST_SEGMENT_FLAG_TRICKMODE_NO_AUDIO;
352 segment->rate = rate;
353 segment->applied_rate = 1.0;
355 segment->base = base;
357 segment->offset = position - start;
360 segment->offset = stop - position;
361 else if (segment->duration != -1)
362 segment->offset = segment->duration - position;
367 segment->start = start;
368 segment->stop = stop;
369 segment->time = start;
370 segment->position = position;
372 GST_INFO ("segment updated: %" GST_SEGMENT_FORMAT, segment);
378 * gst_segment_to_stream_time:
379 * @segment: a #GstSegment structure.
380 * @format: the format of the segment.
381 * @position: the position in the segment
383 * Translate @position to stream time using the currently configured
384 * segment. The @position value must be between @segment start and
387 * This function is typically used by elements that need to operate on
388 * the stream time of the buffers it receives, such as effect plugins.
389 * In those use cases, @position is typically the buffer timestamp or
390 * clock time that one wants to convert to the stream time.
391 * The stream time is always between 0 and the total duration of the
394 * Returns: the position in stream_time or -1 when an invalid position
398 gst_segment_to_stream_time (const GstSegment * segment, GstFormat format,
401 guint64 stream_time, start, stop, time;
402 gdouble abs_applied_rate;
404 /* format does not matter for -1 */
405 if (G_UNLIKELY (position == -1))
408 g_return_val_if_fail (segment != NULL, -1);
409 g_return_val_if_fail (segment->format == format, -1);
411 stop = segment->stop;
413 /* outside of the segment boundary stop */
414 if (G_UNLIKELY (stop != -1 && position > stop))
417 start = segment->start;
419 /* before the segment boundary */
420 if (G_UNLIKELY (position < start))
423 time = segment->time;
425 /* time must be known */
426 if (G_UNLIKELY (time == -1))
429 abs_applied_rate = ABS (segment->applied_rate);
431 /* add or subtract from segment time based on applied rate */
432 if (G_LIKELY (segment->applied_rate > 0.0)) {
433 if (G_UNLIKELY (position < start))
435 /* bring to uncorrected position in segment */
436 stream_time = position - start;
437 /* correct for applied rate if needed */
438 if (G_UNLIKELY (abs_applied_rate != 1.0))
439 stream_time *= abs_applied_rate;
440 /* correct for segment time */
443 /* correct for segment time, clamp at 0. Streams with a negative
444 * applied_rate have timestamps between start and stop, as usual, but have
445 * the time member starting high and going backwards. */
446 if (G_UNLIKELY (position > stop))
448 stream_time = stop - position;
449 if (G_UNLIKELY (abs_applied_rate != 1.0))
450 stream_time *= abs_applied_rate;
458 * gst_segment_position_from_stream_time:
459 * @segment: a #GstSegment structure.
460 * @format: the format of the segment.
461 * @stream_time: the stream_time in the segment
463 * Convert @stream_time into a position in the segment so that
464 * gst_segment_to_stream_time() with that position returns @stream_time.
466 * Returns: the position in the segment for @stream_time. This function returns
467 * -1 when @stream_time is -1 or when it is not inside @segment.
472 gst_segment_position_from_stream_time (const GstSegment * segment,
473 GstFormat format, guint64 stream_time)
475 guint64 position, start, stop, time;
476 gdouble abs_applied_rate;
478 /* format does not matter for -1 */
479 if (G_UNLIKELY (stream_time == -1))
482 g_return_val_if_fail (segment != NULL, -1);
483 g_return_val_if_fail (segment->format == format, -1);
485 start = segment->start;
486 time = segment->time;
487 /* this stream time was for a previous segment */
488 if (G_UNLIKELY (stream_time < segment->time))
491 /* time must be known */
492 if (G_UNLIKELY (time == -1))
495 position = stream_time - time;
497 abs_applied_rate = ABS (segment->applied_rate);
498 stop = segment->stop;
500 /* correct for applied rate if needed */
501 if (G_UNLIKELY (abs_applied_rate != 1.0))
502 position /= abs_applied_rate;
504 if (G_LIKELY (segment->applied_rate > 0.0)) {
506 /* outside of the segment boundary stop */
507 if (G_UNLIKELY (stop != -1 && position > stop))
510 /* cannot calculate without known boundary stop */
511 if (G_UNLIKELY (stop == -1))
513 /* outside segment boundary */
514 if (G_UNLIKELY (position > stop))
517 position = stop - position;
519 /* position before segment start */
520 if (G_UNLIKELY (position < start))
528 * gst_segment_to_running_time_full:
529 * @segment: a #GstSegment structure.
530 * @format: the format of the segment.
531 * @position: the position in the segment
532 * @running_time: result running-time
534 * Translate @position to the total running time using the currently configured
535 * segment. Compared to gst_segment_to_running_time() this function can return
536 * negative running-time.
538 * This function is typically used by elements that need to synchronize buffers
539 * against the clock or eachother.
541 * @position can be any value and the result of this function for values outside
542 * of the segment is extrapolated.
544 * When 1 is returned, @position resulted in a positive running-time returned
547 * When this function returns -1, the returned @running_time should be negated
548 * to get the real negative running time.
550 * Returns: a 1 or -1 on success, 0 on failure.
555 gst_segment_to_running_time_full (const GstSegment * segment, GstFormat format,
556 guint64 position, guint64 * running_time)
560 guint64 start, stop, offset;
563 if (G_UNLIKELY (position == -1)) {
564 GST_DEBUG ("invalid position (-1)");
568 g_return_val_if_fail (segment != NULL, 0);
569 g_return_val_if_fail (segment->format == format, 0);
571 offset = segment->offset;
573 if (G_LIKELY (segment->rate > 0.0)) {
574 start = segment->start + offset;
576 /* bring to uncorrected position in segment */
577 if (position < start) {
579 result = start - position;
582 result = position - start;
586 stop = segment->stop;
588 /* cannot continue if no stop position set or invalid offset */
589 g_return_val_if_fail (stop != -1, 0);
590 g_return_val_if_fail (stop >= offset, 0);
594 /* bring to uncorrected position in segment */
595 if (position > stop) {
597 result = position - stop;
600 result = stop - position;
606 /* scale based on the rate, avoid division by and conversion to
607 * float when not needed */
608 abs_rate = ABS (segment->rate);
609 if (G_UNLIKELY (abs_rate != 1.0))
612 /* correct for base of the segment */
614 /* positive, add base */
615 *running_time = result + segment->base;
616 else if (segment->base >= result) {
617 /* negative and base is bigger, subtract from base and we have a
618 * positive value again */
619 *running_time = segment->base - result;
622 /* negative and base is smaller, subtract base and remainder is
624 *running_time = result - segment->base;
638 * gst_segment_to_running_time:
639 * @segment: a #GstSegment structure.
640 * @format: the format of the segment.
641 * @position: the position in the segment
643 * Translate @position to the total running time using the currently configured
644 * segment. Position is a value between @segment start and stop time.
646 * This function is typically used by elements that need to synchronize to the
647 * global clock in a pipeline. The running time is a constantly increasing value
648 * starting from 0. When gst_segment_init() is called, this value will reset to
651 * This function returns -1 if the position is outside of @segment start and stop.
653 * Returns: the position as the total running time or -1 when an invalid position
657 gst_segment_to_running_time (const GstSegment * segment, GstFormat format,
662 g_return_val_if_fail (segment != NULL, -1);
663 g_return_val_if_fail (segment->format == format, -1);
665 /* before the segment boundary */
666 if (G_UNLIKELY (position < segment->start)) {
667 GST_DEBUG ("position(%" G_GUINT64_FORMAT ") < start(%" G_GUINT64_FORMAT
668 ")", position, segment->start);
671 /* after the segment boundary */
672 if (G_UNLIKELY (segment->stop != -1 && position > segment->stop)) {
673 GST_DEBUG ("position(%" G_GUINT64_FORMAT ") > stop(%" G_GUINT64_FORMAT
674 ")", position, segment->stop);
678 if (gst_segment_to_running_time_full (segment, format, position,
687 * @segment: a #GstSegment structure.
688 * @format: the format of the segment.
689 * @start: the start position in the segment
690 * @stop: the stop position in the segment
691 * @clip_start: (out) (allow-none): the clipped start position in the segment
692 * @clip_stop: (out) (allow-none): the clipped stop position in the segment
694 * Clip the given @start and @stop values to the segment boundaries given
695 * in @segment. @start and @stop are compared and clipped to @segment
696 * start and stop values.
698 * If the function returns %FALSE, @start and @stop are known to fall
699 * outside of @segment and @clip_start and @clip_stop are not updated.
701 * When the function returns %TRUE, @clip_start and @clip_stop will be
702 * updated. If @clip_start or @clip_stop are different from @start or @stop
703 * respectively, the region fell partially in the segment.
705 * Note that when @stop is -1, @clip_stop will be set to the end of the
706 * segment. Depending on the use case, this may or may not be what you want.
708 * Returns: %TRUE if the given @start and @stop times fall partially or
709 * completely in @segment, %FALSE if the values are completely outside
713 gst_segment_clip (const GstSegment * segment, GstFormat format, guint64 start,
714 guint64 stop, guint64 * clip_start, guint64 * clip_stop)
716 g_return_val_if_fail (segment != NULL, FALSE);
717 g_return_val_if_fail (segment->format == format, FALSE);
719 /* if we have a stop position and a valid start and start is bigger,
720 * we're outside of the segment */
721 if (G_UNLIKELY (segment->stop != -1 && start != -1 && start >= segment->stop))
724 /* if a stop position is given and is before the segment start,
725 * we're outside of the segment. Special case is were start
726 * and stop are equal to the segment start. In that case we
727 * are inside the segment. */
728 if (G_UNLIKELY (stop != -1 && (stop < segment->start || (start != stop
729 && stop == segment->start))))
736 *clip_start = MAX (start, segment->start);
741 *clip_stop = segment->stop;
742 else if (segment->stop == -1)
745 *clip_stop = MIN (stop, segment->stop);
752 * gst_segment_position_from_running_time:
753 * @segment: a #GstSegment structure.
754 * @format: the format of the segment.
755 * @running_time: the running_time in the segment
757 * Convert @running_time into a position in the segment so that
758 * gst_segment_to_running_time() with that position returns @running_time.
760 * Returns: the position in the segment for @running_time. This function returns
761 * -1 when @running_time is -1 or when it is not inside @segment.
766 gst_segment_position_from_running_time (const GstSegment * segment,
767 GstFormat format, guint64 running_time)
770 guint64 start, stop, base;
773 if (G_UNLIKELY (running_time == -1))
776 g_return_val_if_fail (segment != NULL, -1);
777 g_return_val_if_fail (segment->format == format, FALSE);
779 base = segment->base;
781 /* this running_time was for a previous segment */
782 if (running_time < base)
785 /* start by subtracting the base time */
786 result = running_time - base;
788 /* move into the segment at the right rate */
789 abs_rate = ABS (segment->rate);
790 if (G_UNLIKELY (abs_rate != 1.0))
791 result = ceil (result * abs_rate);
793 start = segment->start;
794 stop = segment->stop;
796 if (G_LIKELY (segment->rate > 0.0)) {
797 /* bring to corrected position in segment */
798 result += start + segment->offset;
800 /* outside of the segment boundary stop */
801 if (G_UNLIKELY (stop != -1 && result > stop))
804 /* cannot continue if no stop position set or outside of
806 if (G_UNLIKELY (stop == -1 || result + start > stop))
809 /* bring to corrected position in segment */
810 result = stop - result - segment->offset;
816 * gst_segment_to_position:
817 * @segment: a #GstSegment structure.
818 * @format: the format of the segment.
819 * @running_time: the running_time in the segment
821 * Convert @running_time into a position in the segment so that
822 * gst_segment_to_running_time() with that position returns @running_time.
824 * Returns: the position in the segment for @running_time. This function returns
825 * -1 when @running_time is -1 or when it is not inside @segment.
827 * Deprecated. Use gst_segment_position_from_running_time() instead.
829 #ifndef GST_REMOVE_DEPRECATED
830 #ifdef GST_DISABLE_DEPRECATED
831 guint64 gst_segment_to_position (const GstSegment * segment, GstFormat format,
832 guint64 running_time);
835 gst_segment_to_position (const GstSegment * segment, GstFormat format,
836 guint64 running_time)
838 return gst_segment_position_from_running_time (segment, format, running_time);
843 * gst_segment_set_running_time:
844 * @segment: a #GstSegment structure.
845 * @format: the format of the segment.
846 * @running_time: the running_time in the segment
848 * Adjust the start/stop and base values of @segment such that the next valid
849 * buffer will be one with @running_time.
851 * Returns: %TRUE if the segment could be updated successfully. If %FALSE is
852 * returned, @running_time is -1 or not in @segment.
855 gst_segment_set_running_time (GstSegment * segment, GstFormat format,
856 guint64 running_time)
861 /* start by bringing the running_time into the segment position */
863 gst_segment_position_from_running_time (segment, format, running_time);
865 /* we must have a valid position now */
866 if (G_UNLIKELY (position == -1))
869 start = segment->start;
870 stop = segment->stop;
872 if (G_LIKELY (segment->rate > 0.0)) {
873 /* update the start and time values */
876 /* reverse, update stop */
879 /* and base time is exactly the running time */
880 segment->time = gst_segment_to_stream_time (segment, format, start);
881 segment->start = start;
882 segment->stop = stop;
883 segment->base = running_time;
889 * gst_segment_offset_running_time:
890 * @segment: a #GstSegment structure.
891 * @format: the format of the segment.
892 * @offset: the offset to apply in the segment
894 * Adjust the values in @segment so that @offset is applied to all
895 * future running-time calculations.
899 * Returns: %TRUE if the segment could be updated successfully. If %FALSE is
900 * returned, @offset is not in @segment.
903 gst_segment_offset_running_time (GstSegment * segment, GstFormat format,
906 g_return_val_if_fail (segment != NULL, FALSE);
907 g_return_val_if_fail (segment->format == format, FALSE);
913 /* positive offset, we can simply apply to the base time */
914 segment->base += offset;
917 /* negative offset, first try to subtract from base */
918 if (segment->base > offset) {
919 segment->base -= offset;
923 /* subtract all from segment.base, remainder in offset */
924 offset -= segment->base;
927 gst_segment_position_from_running_time (segment, format, offset);
931 segment->offset = position - segment->start;
938 * gst_segment_is_equal:
939 * @s0: a #GstSegment structure.
940 * @s1: a #GstSegment structure.
942 * Checks for two segments being equal. Equality here is defined
943 * as perfect equality, including floating point values.
947 * Returns: %TRUE if the segments are equal, %FALSE otherwise.
950 gst_segment_is_equal (const GstSegment * s0, const GstSegment * s1)
952 if (s0->flags != s1->flags)
954 if (s0->rate != s1->rate)
956 if (s0->applied_rate != s1->applied_rate)
958 if (s0->format != s1->format)
960 if (s0->base != s1->base)
962 if (s0->offset != s1->offset)
964 if (s0->start != s1->start)
966 if (s0->stop != s1->stop)
968 if (s0->time != s1->time)
970 if (s0->position != s1->position)
972 if (s0->duration != s1->duration)