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gstreamer/libs/gst/base
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Thibault Saunier 39b9cc554c basesink: Fix clock synchronization running time in reverse playback 
In reverse playback, buffers have to be displayed at buffer.stop running
time, otherwise a same set of buffer can't be displayed in the exact opposite
order to forward playback.

For example, seeking a video stream at 1fps with start=0, stop=5s, rate=1.0

will display the following buffers:

  b0.pts = 0s, b0.duration = 1s - at running time = 0s
  b1.pts = 1s, b1.duration = 1s - at running time = 1s
  b2.pts = 2s, b2.duration = 1s - at running time = 2s
  b3.pts = 3s, b3.duration = 1s - at running time = 3s
  b4.pts = 4s, b4.duration = 1s - at running time = 4s
  <wait at EOS for 1second>

Now, playing that reverse with start=0, stop=5s, rate=1.0 has to display
the following buffers:

  b0.pts = 4s, b0.duration = 1s - at running time = 0s
  b1.pts = 3s, b1.duration = 1s - at running time = 1s
  b2.pts = 2s, b2.duration = 1s - at running time = 2s
  b3.pts = 1s, b3.duration = 1s - at running time = 3s
  b4.pts = 0s, b4.duration = 1s - at running time = 4s
  <wait at EOS for 1second>

With the previous code, it reproduced the following:

  b0.pts = 4s, b0.duration = 1s - at running time = 1s
  b1.pts = 3s, b1.duration = 1s - at running time = 2s
  b2.pts = 2s, b2.duration = 1s - at running time = 3s
  b3.pts = 1s, b3.duration = 1s - at running time = 4s
  b4.pts = 0s, b4.duration = 1s - at running time = 5s
  <NO WAIT AT EOS AND POST EOS RIGHT AWAY>

This is being tested with the `validate.launch_pipeline.sink.reverse_playback_clock_waits.*`
set of tests

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/450>
2020-05-06 14:24:36 +00:00
..
base-prelude.h libs: figure out right export define in configure 2018-09-24 08:39:37 +01:00
base.h base: Include gstbitwriter.h in the single-include header 2019-04-23 15:15:56 +00:00
gstadapter.c doc: Fix hotdoc warnings 2019-05-13 16:34:09 -04:00
gstadapter.h Use G_DEFINE_AUTOPTR_CLEANUP_FUNC unconditionally 2019-06-04 08:50:59 +02:00
gstaggregator.c aggregator: Mark segment parameter as const in gst_aggregator_update_segment() 2020-05-03 16:11:39 +03:00
gstaggregator.h aggregator: Mark segment parameter as const in gst_aggregator_update_segment() 2020-05-03 16:11:39 +03:00
gstbaseparse.c baseparse: Always clear drain flag before pulling 2020-04-23 13:20:46 +00:00
gstbaseparse.h Use G_DEFINE_AUTOPTR_CLEANUP_FUNC unconditionally 2019-06-04 08:50:59 +02:00
gstbasesink.c basesink: Fix clock synchronization running time in reverse playback 2020-05-06 14:24:36 +00:00
gstbasesink.h base: GstBaseSrc/GstBaseSink::get_caps: add (nullable) to filter 2019-09-11 11:13:38 +02:00
gstbasesrc.c basesrc: Fix the way position is computed in reverse playback 2020-05-06 14:24:36 +00:00
gstbasesrc.h base: GstBaseSrc/GstBaseSink::get_caps: add (nullable) to filter 2019-09-11 11:13:38 +02:00
gstbasetransform.c basetransform: allow not passthrough if generate_output is implemented 2020-03-11 23:00:20 +11:00
gstbasetransform.h basetransform: Make gst_base_transform_reconfigure() public 2020-02-10 13:19:26 +02:00
gstbitreader-docs.h docs: align the comments correctly with the declaration in bitreader docs 2013-01-29 15:43:05 +00:00
gstbitreader.c Port to hotdoc 2019-05-13 16:34:09 -04:00
gstbitreader.h base: GST_EXPORT -> GST_BASE_API 2018-03-13 00:46:00 +00:00
gstbitwriter-docs.h bitwriter: Add a generic bit writer 2018-05-06 17:05:21 +02:00
gstbitwriter.c documentation: fix a number of typos 2019-10-06 11:12:11 -04:00
gstbitwriter.h bitwriter: Fix inclusion of header in C++ code 2019-04-23 15:15:56 +00:00
gstbytereader-docs.h docs: add a missing const in bytereader docs 2017-06-29 21:08:01 +02:00
gstbytereader.c Port to hotdoc 2019-05-13 16:34:09 -04:00
gstbytereader.h base: GST_EXPORT -> GST_BASE_API 2018-03-13 00:46:00 +00:00
gstbytewriter-docs.h docs: Fix typos in function/object descriptions 2013-12-07 17:11:12 +00:00
gstbytewriter.c Port to hotdoc 2019-05-13 16:34:09 -04:00
gstbytewriter.h base: GST_EXPORT -> GST_BASE_API 2018-03-13 00:46:00 +00:00
gstcollectpads.c Use gst_object_unref() / gst_object_clear() instead of the GObject ones 2020-04-20 16:28:52 +00:00
gstcollectpads.h Use G_DEFINE_AUTOPTR_CLEANUP_FUNC unconditionally 2019-06-04 08:50:59 +02:00
gstdataqueue.c Don't pass default GLib marshallers for signals 2019-09-09 12:16:24 +00:00
gstdataqueue.h Use G_DEFINE_AUTOPTR_CLEANUP_FUNC unconditionally 2019-06-04 08:50:59 +02:00
gstflowcombiner.c flowcombiner: passthrough the flow return if there are no pads 2020-03-26 02:31:52 +00:00
gstflowcombiner.h Use G_DEFINE_AUTOPTR_CLEANUP_FUNC unconditionally 2019-06-04 08:50:59 +02:00
gstindex.c documentation: fix a number of typos 2019-10-06 11:12:11 -04:00
gstindex.h base: GST_EXPORT -> GST_BASE_API 2018-03-13 00:46:00 +00:00
gstmemindex.c Fix FSF address 2012-11-03 20:44:48 +00:00
gstpushsrc.c Port gtk-doc comments to their equivalent markdown syntax 2017-01-27 16:36:38 -03:00
gstpushsrc.h Use G_DEFINE_AUTOPTR_CLEANUP_FUNC unconditionally 2019-06-04 08:50:59 +02:00
gstqueuearray.c queuearray: Only clear dropped item if it is not returned 2018-10-15 18:47:16 +03:00
gstqueuearray.h queuearray: Add set_clear_func and clear functions 2018-09-27 19:32:54 +03:00
gsttypefindhelper.c typefindhelper: Mark gst_type_find_helper_get_range_full() as Since 1.14.3 2018-08-02 10:57:28 +03:00
gsttypefindhelper.h typefind: Add new gst_type_find_helper_get_range_full() that returns flow return 2018-08-01 14:23:04 +03:00
meson.build Port to hotdoc 2019-05-13 16:34:09 -04:00
README add short/long description docs to base classes add pushsrc to the docs remove consolidated doc fragments 2005-08-03 13:30:18 +00:00

README 

Base classes
------------

GstBaseSink
  FIXME: not much point making it operate in pull mode as a generic
  base class I guess...