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docs/design/part-qos.txt: Fix typo.
Original commit message from CVS: * docs/design/part-qos.txt: Fix typo. * gst/gstevent.c: * gst/gstevent.h: Update seek event docs regarding negative rates. Rename @cur to @start. * gst/gstsegment.c: (gst_segment_set_seek): * gst/gstsegment.h: Update set_seek docs regarding negative rates. Correctly update last_stop to @stop when dealing with negative rates. Rename @cur to @start. * tests/check/gst/gstpad.c: (GST_START_TEST): Activate pads before trying to use them. * tests/check/gst/gstsegment.c: (GST_START_TEST), (gst_segment_suite): Add simple check for segments and negative rates.
This commit is contained in:
Wim Taymans
parent
3a8fdc1d39
commit
89814eed61
8 changed files with 135 additions and 45 deletions
24
ChangeLog
24
ChangeLog
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@ -1,3 +1,27 @@
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2006-10-09 Wim Taymans <wim@fluendo.com>
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* docs/design/part-qos.txt:
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Fix typo.
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* gst/gstevent.c:
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* gst/gstevent.h:
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Update seek event docs regarding negative rates.
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Rename @cur to @start.
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* gst/gstsegment.c: (gst_segment_set_seek):
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* gst/gstsegment.h:
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Update set_seek docs regarding negative rates.
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Correctly update last_stop to @stop when dealing with negative
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rates.
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Rename @cur to @start.
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* tests/check/gst/gstpad.c: (GST_START_TEST):
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Activate pads before trying to use them.
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* tests/check/gst/gstsegment.c: (GST_START_TEST),
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(gst_segment_suite):
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Add simple check for segments and negative rates.
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2006-10-09 Tim-Philipp Müller <tim at centricular dot net>
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* gst/gsttaglist.c: (gst_tag_list_is_empty):
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@ -32,9 +32,9 @@ The QoS event travels upstream and contains the following fields:
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- timestamp: The timestamp on the buffer that generated the QoS
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event. These timestamps are expressed in total running time in
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the sink so that the value is every increasing.
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the sink so that the value is ever increasing.
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- jitter: The difference of that timestamp against the currentl clock time.
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- jitter: The difference of that timestamp against the current clock time.
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Negative values mean the timestamp was on time. Positive values
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indicate the timestamp was late by that amount.
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@ -785,33 +785,34 @@ gst_event_parse_qos (GstEvent * event, gdouble * proportion,
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* @rate: The new playback rate
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* @format: The format of the seek values
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* @flags: The optional seek flags
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* @cur_type: The type and flags for the new current position
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* @cur: The value of the new current position
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* @start_type: The type and flags for the new start position
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* @start: The value of the new start position
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* @stop_type: The type and flags for the new stop position
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* @stop: The value of the new stop position
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*
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* Allocate a new seek event with the given parameters.
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*
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* The seek event configures playback of the pipeline from
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* @cur to @stop at the speed given in @rate, also called a playback segment.
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* The @cur and @stop values are expressed in format @format.
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* The seek event configures playback of the pipeline between @start to @stop
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* at the speed given in @rate, also called a playback segment.
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* The @start and @stop values are expressed in @format.
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*
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* A @rate of 1.0 means normal playback rate, 2.0 means double speed.
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* Negatives values means backwards playback. A value of 0.0 for the
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* rate is not allowed and should be accomplished instead by PAUSING the
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* pipeline.
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*
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* A pipeline has a default playback segment configured with a current
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* position of 0, a stop position of the total duration of the stream(s) and
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* a rate of 1.0. The currently configured playback segment can be queried
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* with #GST_QUERY_SEGMENT.
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* A pipeline has a default playback segment configured with a start
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* position of 0, a stop position of -1 and a rate of 1.0. The currently
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* configured playback segment can be queried with #GST_QUERY_SEGMENT.
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*
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* @cur_type and @stop_type specify how to adjust the current and stop
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* time, relative or absolute to the last configured playback segment. A type
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* of #GST_SEEK_TYPE_NONE means that the position should not be updated.
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* @start_type and @stop_type specify how to adjust the currently configured
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* start and stop fields in @segment. Adjustments can be made relative or
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* absolute to the last configured values. A type of #GST_SEEK_TYPE_NONE means
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* that the position should not be updated.
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*
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* Updating the @cur position will actually move the current playback position
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* to that new position.
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* When the rate is positive and @start has been updated, playback will start
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* from the newly configured start position. For negative rates, playback will
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* start from the newly configured stop position.
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*
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* It is not possible to seek relative to the current playback position, to do
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* this, PAUSE the pipeline, query the current playback position with
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@ -411,11 +411,11 @@ void gst_event_parse_qos (GstEvent *event, gdouble *proportion, GstClockTimeDi
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GstClockTime *timestamp);
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/* seek event */
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GstEvent* gst_event_new_seek (gdouble rate, GstFormat format, GstSeekFlags flags,
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GstSeekType cur_type, gint64 cur,
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GstSeekType start_type, gint64 start,
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GstSeekType stop_type, gint64 stop);
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void gst_event_parse_seek (GstEvent *event, gdouble *rate, GstFormat *format,
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GstSeekFlags *flags,
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GstSeekType *cur_type, gint64 *cur,
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GstSeekType *start_type, gint64 *start,
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GstSeekType *stop_type, gint64 *stop);
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/* navigation event */
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GstEvent* gst_event_new_navigation (GstStructure *structure);
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@ -172,11 +172,11 @@ gst_segment_init (GstSegment * segment, GstFormat format)
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* gst_segment_set_duration:
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* @segment: a #GstSegment structure.
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* @format: the format of the segment.
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* @duration: the duration of the segment info.
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* @duration: the duration of the segment info or -1 if unknown.
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*
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* Set the duration of the segment to @duration. This function is mainly
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* used by elements that perform seeking and know the total duration of the
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* segment.
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* segment.
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*
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* This field should be set to allow seeking requests relative to the
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* duration.
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@ -226,19 +226,31 @@ gst_segment_set_last_stop (GstSegment * segment, GstFormat format,
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* @rate: the rate of the segment.
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* @format: the format of the segment.
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* @flags: the seek flags for the segment
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* @cur_type: the seek method
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* @cur: the seek start value
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* @start_type: the seek method
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* @start: the seek start value
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* @stop_type: the seek method
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* @stop: the seek stop value
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* @update: boolean holding whether start or stop were updated.
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*
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* Update the segment structure with the field values of a seek event.
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* Update the segment structure with the field values of a seek event (see
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* gst_event_new_seek()).
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*
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* After calling this method, the segment field last_stop will contain
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* the requested new position in the segment. If the cur_type is different
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* from GST_SEEK_TYPE_NONE, the current position is not updated and
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* streaming should continue from the last position, possibly with
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* updated rate, flags or stop position.
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* After calling this method, the segment field last_stop and time will
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* contain the requested new position in the segment. The new requested
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* position in the segment depends on @rate and @start_type and @stop_type.
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*
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* For positive @rate, the new position in the segment is the new @segment
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* start field when it was updated with a @start_type different from
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* #GST_SEEK_TYPE_NONE. If no update was performed on @segment start position
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* (#GST_SEEK_TYPE_NONE), @start is ignored and @segment last_stop is
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* unmodified.
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*
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* For negative @rate, the new position in the segment is the new @segment
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* stop field when it was updated with a @stop_type different from
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* #GST_SEEK_TYPE_NONE. If no stop was previously configured in the segment, the
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* duration of the segment will be used to update the stop position.
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* If no update was performed on @segment stop position (#GST_SEEK_TYPE_NONE),
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* @stop is ignored and @segment last_stop is unmodified.
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*
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* The applied rate of the segment will be set to 1.0 by default.
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* If the caller can apply a rate change, it should update @segment
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@ -247,7 +259,7 @@ gst_segment_set_last_stop (GstSegment * segment, GstFormat format,
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void
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gst_segment_set_seek (GstSegment * segment, gdouble rate,
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GstFormat format, GstSeekFlags flags,
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GstSeekType cur_type, gint64 cur,
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GstSeekType start_type, gint64 start,
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GstSeekType stop_type, gint64 stop, gboolean * update)
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{
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gboolean update_stop, update_start;
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@ -263,35 +275,35 @@ gst_segment_set_seek (GstSegment * segment, gdouble rate,
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update_stop = update_start = TRUE;
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/* start is never invalid */
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switch (cur_type) {
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switch (start_type) {
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case GST_SEEK_TYPE_NONE:
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/* no update to segment */
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cur = segment->start;
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start = segment->start;
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update_start = FALSE;
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break;
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case GST_SEEK_TYPE_SET:
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/* cur holds desired position */
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/* start holds desired position */
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break;
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case GST_SEEK_TYPE_CUR:
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/* add cur to currently configure segment */
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cur = segment->start + cur;
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/* add start to currently configure segment */
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start = segment->start + start;
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break;
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case GST_SEEK_TYPE_END:
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if (segment->duration != -1) {
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/* add cur to total length */
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cur = segment->duration + cur;
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/* add start to total length */
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start = segment->duration + start;
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} else {
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/* no update if duration unknown */
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cur = segment->start;
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start = segment->start;
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update_start = FALSE;
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}
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break;
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}
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/* bring in sane range */
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if (segment->duration != -1)
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cur = CLAMP (cur, 0, segment->duration);
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start = CLAMP (start, 0, segment->duration);
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else
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cur = MAX (cur, 0);
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start = MAX (start, 0);
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/* stop can be -1 if we have not configured a stop. */
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switch (stop_type) {
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@ -328,15 +340,18 @@ gst_segment_set_seek (GstSegment * segment, gdouble rate,
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/* we can't have stop before start */
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if (stop != -1)
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g_return_if_fail (cur <= stop);
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g_return_if_fail (start <= stop);
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segment->rate = rate;
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segment->abs_rate = ABS (rate);
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segment->applied_rate = 1.0;
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segment->flags = flags;
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segment->start = cur;
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if (update_start) {
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segment->last_stop = cur;
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segment->start = start;
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if (update_start && rate > 0.0) {
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segment->last_stop = start;
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}
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if (update_stop && rate < 0.0) {
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segment->last_stop = stop;
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}
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segment->time = segment->last_stop;
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segment->stop = stop;
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@ -83,7 +83,7 @@ void gst_segment_set_last_stop (GstSegment *segment, GstFormat for
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void gst_segment_set_seek (GstSegment *segment, gdouble rate,
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GstFormat format, GstSeekFlags flags,
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GstSeekType cur_type, gint64 cur,
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GstSeekType start_type, gint64 start,
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GstSeekType stop_type, gint64 stop,
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gboolean *update);
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@ -333,9 +333,21 @@ GST_START_TEST (test_push_linked)
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fail_unless (GST_PAD_LINK_SUCCESSFUL (plr));
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ASSERT_CAPS_REFCOUNT (caps, "caps", 3);
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buffer = gst_buffer_new ();
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#if 0
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/* FIXME, new pad should be flushing */
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gst_buffer_ref (buffer);
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fail_unless (gst_pad_push (src, buffer) == GST_FLOW_WRONG_STATE);
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gst_buffer_ref (buffer);
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fail_unless (gst_pad_chain (sink, buffer) == GST_FLOW_WRONG_STATE);
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#endif
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/* activate pads */
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gst_pad_set_active (src, TRUE);
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gst_pad_set_active (sink, TRUE);
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/* test */
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/* pushing on a linked pad will drop the ref to the buffer */
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buffer = gst_buffer_new ();
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gst_buffer_ref (buffer);
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fail_unless (gst_pad_push (src, buffer) == GST_FLOW_OK);
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ASSERT_MINI_OBJECT_REFCOUNT (buffer, "buffer", 2);
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@ -380,6 +380,43 @@ GST_START_TEST (segment_seek_size)
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GST_END_TEST;
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GST_START_TEST (segment_seek_reverse)
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{
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GstSegment segment;
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gboolean update;
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gst_segment_init (&segment, GST_FORMAT_BYTES);
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gst_segment_set_duration (&segment, GST_FORMAT_BYTES, 200);
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/* configure segment to stop 100 */
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gst_segment_set_seek (&segment, -1.0,
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GST_FORMAT_BYTES,
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GST_SEEK_FLAG_NONE,
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GST_SEEK_TYPE_SET, 0, GST_SEEK_TYPE_SET, 100, &update);
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fail_unless (segment.start == 0);
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fail_unless (segment.stop == 100);
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fail_unless (segment.last_stop == 100);
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/* update */
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gst_segment_set_seek (&segment, -1.0,
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GST_FORMAT_BYTES,
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GST_SEEK_FLAG_NONE,
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GST_SEEK_TYPE_SET, 10, GST_SEEK_TYPE_CUR, -20, &update);
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fail_unless (segment.start == 10);
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fail_unless (segment.stop == 80);
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fail_unless (segment.last_stop == 80);
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gst_segment_set_seek (&segment, -1.0,
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GST_FORMAT_BYTES,
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GST_SEEK_FLAG_NONE,
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GST_SEEK_TYPE_SET, 20, GST_SEEK_TYPE_NONE, 0, &update);
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fail_unless (segment.start == 20);
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fail_unless (segment.stop == 80);
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fail_unless (segment.last_stop == 80);
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}
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GST_END_TEST;
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/* mess with the segment structure in the bytes format */
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GST_START_TEST (segment_newsegment_open)
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{
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@ -1289,6 +1326,7 @@ gst_segment_suite (void)
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suite_add_tcase (s, tc_chain);
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tcase_add_test (tc_chain, segment_seek_nosize);
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tcase_add_test (tc_chain, segment_seek_size);
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tcase_add_test (tc_chain, segment_seek_reverse);
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tcase_add_test (tc_chain, segment_newsegment_open);
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tcase_add_test (tc_chain, segment_newsegment_closed);
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tcase_add_test (tc_chain, segment_newsegment_streamtime);
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