This is useful for feature that are produced after probing a specific
node. You want to reload this plugin if the specific node(s) have been
removed, added, or reloaded.
https://bugzilla.gnome.org/show_bug.cgi?id=758080
In plugin is responsible for calculating a hash of the dependencies
in order to determine if the cache should be invalidated or not.
Currently, the hash combining method removes a bit of the original
have before combining with an addition. As we use 32bits for our hash
and shift 1 bit for each file and directory, that resulting hash only
account for the last 32 files. And is more affected by the last file.
Rotating technique (shifting, and adding back the ending bit), can be
use to make the addition non-commutative. In a way that different order
gives different hashes. In this case, I don't preserve this behaviour
because the order in which the files are provided by the OS is
irrelevant.
In most cases, the XOR operation is used to combine hashes. In this
code we use the addition. I decided to preserve the addition because
we make use of non-random hash ((guint) -1) in the algorithm for
matching files that are not really part of the hash (symlinks, special
files). Doing successive XOR on this value, will simply switch from
full ones, to full zero. The XOR used with whitelist has been preserved
as it's based on a fairly randomized hash (g_str_hash).
https://bugzilla.gnome.org/show_bug.cgi?id=758078
On iOS/OSX g_get_current_time was used by default. However, mach_time is
the preferred high-resolution monotonic clock to be used on Apple
platforms.
https://bugzilla.gnome.org/show_bug.cgi?id=758012
Helps catching when a state change is starting and ending.
It is also possible to track the end of state changes by checking the
async-done or state-change messages.
This is particularly important for elements that do async state changes.
Validate that the proxy pad indeed accepts the caps by also
comparing with the pad template caps, otherwise when the pad
had no internally linked pads it would always return true.
https://bugzilla.gnome.org/show_bug.cgi?id=754112
Instead of re-sending sticky events over and over to a not-linked
pad, mark them as sent the first time. If the not-linked came from
downstream, it already received the events. If the pad is actually
not-linked, the sticky events will be rescheduled when the
pad is linked anyway.
There is a similar explanation in gst_caps_make_writable, but the existing
documentation can be misleading since it does not define what 'is already
writable' means.
Also note when this function is meant to be used.
API: GST_BUFFER_DTS_OR_PTS
Many scenarios/elements require dealing with streams of buffers that
might have DTS set (i.e. encoded data, potentially reordered)
To simplify getting the increasing "timestamp" of those buffers, create
a macro that will return the DTS if valid, and if not the PTS
Updated gst_segment_position_from_stream_time and gst_segment_to_stream_time to reflect correct calculations for the case when the applied rate is negative.
Pasting from design docs:
===============================
Stream time is calculated using the buffer times and the preceding SEGMENT
event as follows:
stream_time = (B.timestamp - S.start) * ABS (S.applied_rate) + S.time
For negative rates, B.timestamp will go backwards from S.stop to S.start,
making the stream time go backwards.
===============================
Therefore, the calculation for applied_rate < 0 should be:
stream_time = (S.stop - B.timestamp) * ABS (S.applied_rate) + S.time
and the reverse:
B.timestamp = S.stop - (stream_time - S.time) / ABS (S.applied_rate)
https://bugzilla.gnome.org/show_bug.cgi?id=756810
An ASYNC READY->PAUSED might have failed without the bin code noticing during
the state change, in which case we will never get PAUSED->READY and would leak
messages.
https://bugzilla.gnome.org/show_bug.cgi?id=756611
This way one can define new tracing probes without changing the core. We are
using our own quark table, as 1) we only want to initialize them if we're
tracing, 2) we want to share them with the tracers.
Instead of a single invoke() function and a 'mask', register to individual
hooks. This avoids one level of indirection and allows us to remove the
hook enums. The message enms are now renamed to hook enums.
This way we only expand the structure when we're logging. This allows us to
meassure the pure tracing seperately from the logging.
Also add some comments on further improvements.
Keep tracer base class in tracer and move core support into the utils module.
Add a unstable-api guard to the tracer.h so that external modules would need to
acknowledge the status by setting GST_USE_UNSTABLE_API.
When adding an element to a bin we need to propagate the GstContext's
to/from the element.
This moves the GstContext list from GstBin to GstElement and adds
convenience functions to get the currently set list of GstContext's.
This does not deal with the collection of GstContext's propagated
using GST_CONTEXT_QUERY. Element subclasses are advised to call
gst_element_set_context if they need to propagate GstContext's
received from the context query.
https://bugzilla.gnome.org/show_bug.cgi?id=705579
A proxy-pad should always proxy the caps related queries
and events to its down or upstream peers on the other side
of the element. Falling back to a caps query seems wrong.
https://bugzilla.gnome.org/show_bug.cgi?id=754112
gst_segment_to_position might cause confusion, especially with the addition of
gst_segment_position_from_stream_time . Deprecated gst_segment_to_position
now, and replaced it with gst_segment_position_from_running_time.
Also added unit tests.
gst_segment_position_from_stream_time() will convert stream time into a
position in the segment so that gst_segment_to_stream_time() with that
position returns the same stream time. It will return -1 if the stream time
given is not inside the segment.
When a running-time-offset is stored in the event, it could become smaller
than 0 although the event is otherwise correct. This can happen when pad
offsets are used.
To prevent this, we set the timestamp to -diff, so that in the end the sum of
both is exactly 0.
https://bugzilla.gnome.org/show_bug.cgi?id=754356
This fixes a race where a state change may return failure if it has
request pads that are deactivated and removed (and thus have no
parent) at the same time as the element changes state and (de)activates
its pads.
https://bugzilla.gnome.org/show_bug.cgi?id=755342
In some cases, probes might want to handle the buffer/event/query
themselves and stop the data from travelling further downstream.
While this was somewhat possible with buffer/events and using
GST_PROBE_DROP, it was not applicable to queries, and would result
in the query failing.
With this new GST_PROBE_HANDLED value, the buffer/event/query will
be considered as successfully handled, will not be pushed further
and the appropriate return value (TRUE or GST_FLOW_OK) will be returned
This also allows probes to return a non-default GstFlowReturn when dealing
with buffer push. This can be done by setting the
GST_PAD_PROBE_INFO_FLOW_RETURN() field accordingly
https://bugzilla.gnome.org/show_bug.cgi?id=748643
It will make the default accept-caps handler use the pad template
caps instead of the query-caps result to check if the caps is
acceptable. This is aligned with what the design docs says the
accept-caps should do (be non-recursive) and should be faster. It
is *not* enabled by default, though.
API: GST_PAD_FLAG_ACCEPT_TEMPLATE
API: GST_PAD_IS_ACCEPT_TEMPLATE
API: GST_PAD_SET_ACCEPT_TEMPLATE
API: GST_PAD_UNSET_ACCEPT_TEMPLATE
https://bugzilla.gnome.org/show_bug.cgi?id=753623
If no date and only a time is given in gst_date_time_new_from_iso8601_string(),
assume that it is "today" and try to parse the time-only string. "Today" is
assumed to be in the timezone provided by the user (if any), otherwise Z -
just like the behavior of the existing code.
https://bugzilla.gnome.org/show_bug.cgi?id=753455
Add methods to add/remove the providers that should be hidden by this
provider. Also make a method to get a list of hidden providers.
This makes it possible to have multiple systems monitor the same devices
and remove duplicates.
Add a property to see all devices, even duplicate ones from hidden
providers.
The previous implementation was doing a direct call to the peer pad,
which resulted in query probes never being called on the original pad.
Instead of that, get the peer pad caps by using gst_pad_peer_query()
which will call probes in the expected fashion.
While calling gst_value_deserialize_sample, if there is a failure
after caps is ref'ed, then caps is getting leaked. Hence checking for
caps in fail: goto condition and unref'ing it
https://bugzilla.gnome.org/show_bug.cgi?id=753338
When running gst_registry_scan_plugin_file we were losing the
information about the registry being loaded and ended up adding the
plugin to the default registry which was not correct.
https://bugzilla.gnome.org/show_bug.cgi?id=752662
