Commit graph

7594 commits

Author SHA1 Message Date
Linus Svensson
b0fff643dc bus: gst_bus_add_watch() can return 0 on error
Fixes: https://bugzilla.gnome.org/show_bug.cgi?id=735195
2014-08-28 10:10:37 +03:00
Tim-Philipp Müller
b38264a9cb pad: add g-i 'transfer full' annotations to chain and chain_list functions
https://bugzilla.gnome.org/show_bug.cgi?id=735210
2014-08-23 12:24:27 +01:00
Guillaume Desmottes
a647d83267 pad: annotate GstPadEventFunction event with 'transfer full'
The callback is supposed to take ownership of the event so
best to be explicit about it.

https://bugzilla.gnome.org/show_bug.cgi?id=735210
2014-08-23 12:21:30 +01:00
Philippe Normand
b1f2359809 bus: destroy signal watch from the context it was mapped to
Don't rely on g_source_remove() because it operates on the main
context. If a signal watch was added to a new thread-default context
g_source_remove() would have no effect. So simply use
g_source_destroy() to avoid this problem.

Additionally the source_id was removed from GstBusPrivate because it
was redundant with the signal watch GSource also stored in that
structure.

https://bugzilla.gnome.org/show_bug.cgi?id=734716
2014-08-13 18:44:39 +03:00
Sebastian Dröge
2f33fd5c19 bin: Use allow-none instead of nullable until we depend on a new enough GI version 2014-08-13 12:40:37 +03:00
Sebastian Dröge
9b96d4c7cd bin: gst_bin_new() can accept NULL as name 2014-08-13 12:39:47 +03:00
Sebastian Dröge
82e01491a0 element: Clarify docs about gst_element_get_request_pad() and remove deprecation part
This function is not really pad or slow for the common case of requesting a
pad with the name of the template. It is only slower if you to name your pads
directly instead of letting the element handle it.

Also there's no reason to deprecate it in favor of a more complicated function
for the common case.
2014-08-13 12:37:08 +03:00
Arun Raghavan
d3e411bda4 docs: Trivial pad documentation fix
Presumably a copy-pasto.
2014-08-12 20:04:11 +05:30
Sebastian Dröge
27d1901d19 utils: Ghostpads can be request pads too but check if the pad has a template
Otherwise we dereference NULL in some cases and crash.
2014-08-06 14:43:08 +02:00
Sebastian Rasmussen
a041e65503 utils: Unref/release pads in error cases when linking pads
Previously gst_element_link_pads_full() forgot to unreference or release
request pads in several error cases. Also comments were added mentioning
why releasing is not necessary in some places.

Fixes https://bugzilla.gnome.org/show_bug.cgi?id=733119
2014-08-06 09:58:30 +02:00
Mohammed Sameer
59749833bb bufferpool: Add missing error checking to default_alloc_buffer()
default_alloc_buffer() calls gst_buffer_new_allocate() but does not check for
failed allocation.

This patch makes default_alloc_buffer() return an error (GST_FLOW_ERROR) if
buffer allocation fails.

https://bugzilla.gnome.org/show_bug.cgi?id=733974
2014-07-30 09:02:20 -04:00
Sebastian Rasmussen
0887020581 parse: Unref reference to enclosing bins
Previously all reference to enclosing bins of an element were leaked
when doing delaying setting a property.

Fixes https://bugzilla.gnome.org/show_bug.cgi?id=733697
2014-07-28 08:41:27 -03:00
Руслан Ижбулатов
b87c55f6ed poll: Prevent false-negative from WAKE_EVENT() on W32
SetEvent() seems to not call SetLastError(0) internally, so checking last
error after calling SetEvent() may return the error from an earlier W32 API
call. Fix this by calling SetlastError(0) explicitly.

Currently WAKE_EVENT() code is cramped into a macro and doesn't look to be
entirely correct. Particularly, it does not check the return value of
SetEvent(), only the thread-local W32 error value. It is likely that SetEvent()
actually just returns non-zero value, but the code mistakenly thinks that the
call has failed, because GetLastError() seems to indicate so.

https://bugzilla.gnome.org/show_bug.cgi?id=733805
2014-07-28 09:13:44 +02:00
Tim-Philipp Müller
24080568a1 gst: include atomicqueue.h again in gst.h
It's a public header of gstreamer core, so #include <gst/gst.h>
should make the API available.
2014-07-26 14:43:34 +01:00
Tim-Philipp Müller
fbe2477fae bufferlist: pre-allocate buffer array in one go with the buffer list
We can now create and free a buffer list with one slice alloc/free
call in most cases, instead of one slice alloc/free for the list,
one slice alloc/free for the GArray, and one malloc/free for the
GArray array. In practice we know the max size of our buffer list
from the start, so can avoid reallocs.

https://bugzilla.gnome.org/show_bug.cgi?id=732284
2014-07-24 10:45:23 +01:00
Stefan Sauer
3fbc3d76dc private: allow internal access to the debug base-time
Moving the extern to the head lets us access this from other parts as well. This
is neeed in the tracer branch.
2014-07-23 21:30:21 +02:00
Thiago Santos
4ca6694e09 gstvalue: add GstTagList compare function
When serializing GstStructures from events in GDP it will add a taglist
as a GstStructure field, having the compare function allows comparison of
GstStructures to check if the serialized/deserialized version matches the
original one, among other cases.

https://bugzilla.gnome.org/show_bug.cgi?id=733131
2014-07-21 11:42:05 -03:00
Sebastian Dröge
1299d06ef1 pipeline: Reset the start time when going from PAUSED to READY too 2014-07-21 09:33:54 +02:00
Sebastian Dröge
aa6aaa42a8 pipeline: Reset start time in READY->PAUSED before chaining up
Otherwise bin will change the state of the child elements without
distributing the new start time.
2014-07-21 09:33:54 +02:00
Sebastian Rasmussen
4dca9a79a2 debugutils: Unref pad template after use
Fixes https://bugzilla.gnome.org/show_bug.cgi?id=733121
2014-07-16 16:44:11 +02:00
Thiago Santos
c7aa4e6a5f gst: init taglist gtype to use it in gstvalue
Otherwise it will have a 0 value and GstTagList won't be found
for GstValue functions (serialization/deserialization)

https://bugzilla.gnome.org/show_bug.cgi?id=733131
2014-07-14 18:45:11 -03:00
Sebastian Rasmussen
863ba1a598 docs: Fix documentation typos and inconsistencies
* GstGlobalDeviceMonitor was renamed to GstDeviceMonitor
 * Expand GST_MESSAGE_DEVICE to the full enum value names
 * Correct the incorrect references to the GstDeviceProvider interfaces
 * Describe caps arguments for gstcheck interface
 * Add missing docs for GstNetAddressMeta and its add function
 * Add docs for toc helper macros
 * Avoid refering to GstValueList type as done elsewhere

Fixes https://bugzilla.gnome.org/show_bug.cgi?id=732786
2014-07-09 09:22:11 +02:00
Sebastian Dröge
125ae3acb1 message: Work around g-i/pygobject/gjs bug with ~0 in enums
GST_MESSAGE_ANY was considered a long by pygobject and gjs, and thus
couldn't be used in gst_bus_poll() and similar APIs as they expect an
int-typed enum.

Just use 0xffffffff instead for now.

https://bugzilla.gnome.org/show_bug.cgi?id=732633
2014-07-03 10:13:28 +02:00
Göran Jönsson
d0a808cdc8 pad: Don't unlock while iterating over all sticky events for removal
Otherwise we might end up getting the event removed from elsewhere
at the same time while we're unlocked for g_object_notify().

https://bugzilla.gnome.org/show_bug.cgi?id=732556
2014-07-01 19:26:18 +02:00
Evan Nemerson
5abc82e9f3 introspection: Assorted minor introspection and documentation fixes
https://bugzilla.gnome.org/show_bug.cgi?id=732534
2014-07-01 09:03:41 +02:00
Guillaume Desmottes
688108431a devicemonitor: Stop using g_clear_pointer()
We dont't want to depend on GLib 2.34 for now.
2014-06-30 11:17:44 +02:00
Tim-Philipp Müller
0e0e78e8af devicemonitor: don't fail when started without any filters
Just show all devices then.
2014-06-27 10:47:50 +01:00
Tim-Philipp Müller
9b07b935a4 deviceproviderfactory: handle NULL classes argument and match any 2014-06-27 10:44:01 +01:00
Olivier Crête
67440ce084 devicemonitor: Improve documentation 2014-06-26 21:01:38 -04:00
Olivier Crête
6d12b33945 devicemonitor: Make it possible to add multiple filters
Each filter will include a GstCaps and a set of classes to match
2014-06-26 21:01:38 -04:00
Olivier Crête
d76e0be9fd device: Add pre-conditions 2014-06-26 16:31:51 -04:00
Olivier Crête
c2583cae90 GstDeviceMonitor: Rename from GstGlobalDeviceMonitor 2014-06-26 15:08:46 -04:00
Olivier Crête
7992174a1a DeviceProvider: Rename from DeviceMonitor 2014-06-26 14:45:30 -04:00
Philip Withnall
9edef56efc miniobject: Add missing (nullable) annotations
gst_mini_object_replace() can take NULL mini-objects.

https://bugzilla.gnome.org/show_bug.cgi?id=730873
2014-06-26 19:16:07 +02:00
Sebastian Dröge
fe192fe399 message: Application and element messages should not have NULL structures
It does not make sense for them.
2014-06-26 19:02:06 +02:00
Evan Nemerson
4088363aea introspection: add some missing allow-none annotations to in params
https://bugzilla.gnome.org/show_bug.cgi?id=730957
2014-06-26 19:00:58 +02:00
Evan Nemerson
5d80cf12ba introspection: add nullability annotations to out and inout params
https://bugzilla.gnome.org/show_bug.cgi?id=730957
2014-06-26 18:59:15 +02:00
Evan Nemerson
2759882379 introspection: add missing (nullable) annotations to return values
Support for (nullable) was added to G-I at the same time as nullable
return values.  Previous versions of G-I will not mark return values as
nullable, even when an (allow-none) annotation is present, so it is
not necessary to add (allow-none) annotations for compatibility with
older versions of G-I.

https://bugzilla.gnome.org/show_bug.cgi?id=730957
2014-06-26 18:56:38 +02:00
George Kiagiadakis
780c83d5c4 caps: unset the parent refcount of the old features before freeing them in gst_caps_set_features()
Otherwise gst_caps_features_free() asserts and the features structure is leaked
2014-06-26 11:16:34 +03:00
Tim-Philipp Müller
8e30a9462c caps: gst_caps_is_any() should return TRUE or FALSE
Not some flag value instead of TRUE. Fixes code like
gst_caps_is_any() == TRUE.

https://bugzilla.gnome.org//show_bug.cgi?id=731704
2014-06-22 12:50:42 +01:00
Tim-Philipp Müller
2092754ed1 device: rename "klass" and get_klass() to "device-class" and _get_device_class()
There's some precedent in GstElementFactory, but a
"klass" property just seems weird.
2014-06-21 01:26:46 +01:00
Tim-Philipp Müller
89a5b89388 value: simplify GST_VALUE_HOLDS for our boxed and fundamental types
Boxed types can't be derived from, and we don't support
deriving from our special fundamental types (the code
checks for GType equality in most places.
2014-06-21 01:10:22 +01:00
Olivier Crête
77db6bf3d6 GstDevice: Document GstDevice and related classes 2014-06-20 16:55:06 -04:00
Tim-Philipp Müller
bc75a166f0 gstvalue: optimise checks for lists
Our fundamental types are non-derivable, so we can
just check for equality. Also avoid doing the same
check multiple times in a couple of places.
2014-06-19 08:40:16 +01:00
Tim-Philipp Müller
d74708a820 gstvalue: use g_assert() in internal function for already-checked things
So these get compiled out for releases.
2014-06-19 08:40:15 +01:00
Tim-Philipp Müller
bbefd6082f gstvalue: add internal _can_compare_unchecked() 2014-06-19 08:40:15 +01:00
Tim-Philipp Müller
adcbe94aff gstvalue: add internal _list_concat() that takes ownership of input values
Avoids unnecessary copies.
2014-06-19 08:40:15 +01:00
Tim-Philipp Müller
5f6088f039 structure: simplify value type checks in getters
Just check for GType equality in common cases.
2014-06-19 08:40:15 +01:00
Sebastian Dröge
8f4b479c98 value: Add a FIXME 2.0 for a fraction ranges optimization
Currently we leak the internal representation of them as two GValues that
contain a fraction. Without this we could store fraction ranges as
  data[0] = (min_n << 32) | (min_d)
  data[1] = (max_n << 32) | (max_d)
and wouldn't require an additional allocation per range.
2014-06-19 09:33:55 +02:00
Sebastian Dröge
9b7da39b68 value: Make sure to cast int range values to guints before storing them
Otherwise negative values will sets all of the 64 bits due to two's
complement's definition of negative values.

Also add a test for negative int ranges.
2014-06-19 09:33:54 +02:00
Sebastian Dröge
d84d01aad4 value: Store integer ranges directly in a GValue without additional allocation
Micro optimization to save some allocations. Next step to do this
with fraction ranges too.
2014-06-19 09:09:07 +02:00
Edward Hervey
37e8ffcc4f gst_private: Fix duplicate definition 2014-06-19 08:43:36 +02:00
Sebastian Dröge
db1e4422b6 gst: Store more basic type GTypes in variables
Micro optimization to change a function call to a variable access
for all our basic types.
2014-06-19 08:06:55 +02:00
Sebastian Dröge
f47a95f4cb value: Store our fundamental type GTypes in variables
Micro optimization to change a function call to a variable access
for all our basic types.
2014-06-19 08:06:55 +02:00
Edward Hervey
b0b20b44e5 gstvalue: Speed up gst_value_intersect/_subtract
Both gst_value_intersect and gst_value_subtract will call
gst_value_compare if one of their arguments isn't a list.

gst_value_compare will then re-do a check to see if one of
the arguments is a list (for the special case of comparing a unitary
value with a list of length 1).

The problem is that the various G_VALUE_HOLDS represent an expensive
amount of calling gst_value_compare (almost half of it) to see if
the provided arguments are list. These checks can be done without
when we know that the arguments aren't lists.

* Create a new "nolist" gst_value_compare which avoids that special
  case comparision

Benchmarks:
 valgrind/callgrind: average speedup in instruction calls for
 gst_value_intersect and gst_value_subtract is around 56% (Makes 63%
 of the calls it used to take previously)

 tests/benchmarks/capsnego: With default settings (depth 4, children 3
 607 elements), time taken for transition from READY to PAUSED:
   Before : 00.391519153
   After  : 00.220397492
    56% of the time previously used, +77% speedup

https://bugzilla.gnome.org/show_bug.cgi?id=731756
2014-06-17 16:27:07 +02:00
Tim-Philipp Müller
87fcf1e078 bufferlist: fix buffer leak in _remove() 2014-06-16 20:29:56 +01:00
Tim-Philipp Müller
bd26fa7ccb devicemonitor: some docs additions and fixes 2014-06-14 16:30:49 +01:00
Evan Nemerson
2a14482c62 introspection: minor annotation additions
https://bugzilla.gnome.org/show_bug.cgi?id=731541
2014-06-12 09:26:38 +01:00
Evan Nemerson
ba1212f63b introspection: include gstversion.h in GIR generation
https://bugzilla.gnome.org/show_bug.cgi?id=703021
2014-06-12 08:22:20 +01:00
Tim-Philipp Müller
12088d87bb globaldevicemonitor: prettify header 2014-06-07 10:13:56 +01:00
Evan Nemerson
1fe6d3ad08 introspection: fix some minor annotation bugs
https://bugzilla.gnome.org/show_bug.cgi?id=730982
2014-06-06 15:15:12 -04:00
Tim-Philipp Müller
b65a7a7034 info: make printing datetimes work with GST_PTR_FORMAT 2014-06-03 23:49:26 +01:00
Tim-Philipp Müller
8998cf840d datetime: change internal implementation to mini object
And move type stuff from GstValue to GstDateTime.
2014-06-03 23:49:21 +01:00
Wim Taymans
36d4c4c218 info: first handle all miniobjects, then GObjects
First handle all miniobjects before we attempt to dereference the first
field pointer and look at the GType. With the recent glib change to
speed up G_IS_OBJECT, this causes crashes on miniobjects otherwise.
2014-06-03 14:47:17 +02:00
Wim Taymans
460be3e124 info: GstDateTime does not have a GType as first field
GstDateTime does not have the GType as the first field so we can't use
it to detect its type.
2014-06-03 14:46:11 +02:00
Wim Taymans
e457739ac9 info: use macros to check types
Use the macros to check the type of objects instead of directly poking
at the first field.
2014-06-03 14:45:22 +02:00
Tim-Philipp Müller
64c71323a6 globaldevicemonitor: connect sync-message signal on the right object
Fixes criticals at runtime and makes stuff actually work.
2014-06-01 23:51:20 +01:00
Sebastian Dröge
066fdcd432 Revert "miniobject: Add missing (nullable) annotations"
This reverts commit 96361e9b5c.

This was not supposed to be pushed yet!
2014-05-30 09:13:16 +02:00
Sebastian Dröge
67138f4ee8 bufferpool: It's pool, not poo... even when talking about flushing 2014-05-30 09:12:50 +02:00
Philip Withnall
96361e9b5c miniobject: Add missing (nullable) annotations
gst_mini_object_replace() can take NULL mini-objects.

https://bugzilla.gnome.org/show_bug.cgi?id=730873
2014-05-30 09:12:49 +02:00
Evan Nemerson
e10266e3f3 docs: convert NULL, TRUE, and FALSE to %NULL, %TRUE, and %FALSE
This should help improve documentation generated for
languages other than C.

https://bugzilla.gnome.org/show_bug.cgi?id=730961
2014-05-30 00:20:27 +01:00
Tim-Philipp Müller
88191aa880 docs: fix type in GstObject docs 2014-05-30 00:14:01 +01:00
Evan Nemerson
4397150d54 bufferpool: fix gst_buffer_pool_has_option() documentation
https://bugzilla.gnome.org/show_bug.cgi?id=730962
2014-05-29 23:18:18 +01:00
Thiago Santos
1911554cff element: set pads need-parent flag to false when removing
When a pad is added the need-parent flag is set to true, so when
they are removed the flag should be set back to false

This was preventing GstPads to be reused in elements (removed and
later re-added). A unit tests was added to verify that this is
working now.

The use case is tsdemux that has a program-number property and
allows the user to switch programs. In order to do that tsdemux
will remove the pads of the current program and add from the new
ones. The removed pads are kept in the demuxer for later if the
user selects the old program again.
2014-05-29 17:01:20 -03:00
Tim-Philipp Müller
ba3073ffce pad: two minor docs fixes 2014-05-27 13:37:05 +01:00
Thiago Santos
c6f92562b6 pad: store last flow return and provide acessor function
Stores the last result of a gst_pad_push or a pull on the GstPad and provides
a getter and a macro to access this field.

Whenever the pad is inactive it is set to FLUSHING

API: gst_pad_get_last_flow_return

https://bugzilla.gnome.org/show_bug.cgi?id=709224
2014-05-26 15:29:53 -03:00
Nicolas Dufresne
103a40b6ce bufferpool: Add method and virtuals to set flushing state
Currently there is no other way to unlock a buffer pool other then
stopping it. This may have the effect of freeing all the buffers,
which is too heavy for a seek. This patch add a method to enter and
leave flushing state. As a convenience, flush_start/flush_stop
virtual are added so pool implementation can also unblock their own
internal poll atomically with the rest of the pool.  This is fully
backward compatible with doing stop/start to actually flush the pool
(as being done in GstBaseSrc).

https://bugzilla.gnome.org/show_bug.cgi?id=727611
2014-05-26 13:31:21 -04:00
Tim-Philipp Müller
48b608337b pluginloader: fix compiler warning on windows
gstpluginloader.c:584:1: error: label 'beach' defined but not used

https://bugzilla.gnome.org/show_bug.cgi?id=730125
2014-05-14 13:40:03 +01:00
Edward Hervey
c7d68da704 pluginloader: Don't leak pluginloader in error cases
CID #1212154
2014-05-12 17:03:46 +02:00
Edward Hervey
25bcc2d7f6 caps: Don't leak features on error cases
If we fail to parse fields, we would end up leaking the features we
parsed just before

CID #1212152
2014-05-12 16:59:29 +02:00
Nicolas Dufresne
194db480e0 bufferpool: Add an helper to validate config
When we call gst_buffer_pool_set_config() the pool may return FALSE and
slightly change the parameters. This helper is useful to do the minial required
validation before accepting the modified configuration.

https://bugzilla.gnome.org/show_bug.cgi?id=727916
2014-05-08 13:11:14 -04:00
Nicolas Dufresne
43acfbbb86 bufferpool: Update the configure even if set_config() returned false
According to the documentation, when set_config() return false, it should be
possible to read the modified version of the config. This patch fixes the
implementation so it is now according to the documentation.

https://bugzilla.gnome.org/show_bug.cgi?id=727916
2014-05-08 13:08:21 -04:00
Nicolas Dufresne
6079666a71 bufferpool: Add support for reconfiguring a pool
If a pool config is being configured again, check if the configuration have changed.
If not, skip that step. Finally, if the pool is active, try deactivating it.

https://bugzilla.gnome.org/show_bug.cgi?id=728268
2014-05-08 13:08:21 -04:00
Nicolas Dufresne
64aa64cb80 value: Add support for GstAllocationParams comparision
This is useful to compare buffer pool configuaration.

https://bugzilla.gnome.org/show_bug.cgi?id=728268
2014-05-08 13:08:21 -04:00
Nicolas Dufresne
00614e2c2b value: Add support for GObject comparising in structures
This is useful to allow comparing pool configuration where a GstAllocator
is set.

https://bugzilla.gnome.org/show_bug.cgi?id=728268
2014-05-08 13:08:21 -04:00
Tim-Philipp Müller
035bc8b8db plugin: fix case where gst_plugin_load_file() didn't set the error on failure 2014-05-08 17:51:31 +01:00
Wim Taymans
35a1822d7a pads: update docs for request pads
We would like to encourage the use of gst_element_request_pad()
2014-05-08 09:13:04 +02:00
Tim-Philipp Müller
4e1699e030 value: init flag mask more correctly 2014-05-04 14:52:01 +01:00
Sebastian Dröge
d2e431e0ff bin: Always first post the state-changed message for PAUSED->READY before posting any pending EOS message
https://bugzilla.gnome.org/show_bug.cgi?id=727949
2014-05-01 20:11:04 +02:00
Stian Selnes
40c8208ad2 bufferpool: fix log message of buffer pointer 2014-05-01 10:03:39 +02:00
Sebastian Dröge
3b331155e1 query: Add boolean to URI query to specify if a redirect is permanent or not 2014-04-28 10:03:15 +02:00
Felipe Ortiz
c10663ba3e docs: add docs for various GstPad macros
https://bugzilla.gnome.org/show_bug.cgi?id=723652
2014-04-26 23:14:36 +01:00
Tim-Philipp Müller
b2722a45dd Revert "docs: add docs for various GstPad macros"
This reverts commit d17438d5fd.

This commit featured the wrong author, sorry.
2014-04-26 23:12:13 +01:00
Tim-Philipp Müller
6eb6d9ec38 docs: remove outdated and pointless 'Last reviewed' lines from docs
They are very confusing for people, and more often than not
also just not very accurate. Seeing 'last reviewed: 2005' in
your docs is not very confidence-inspiring. Let's just remove
those comments.
2014-04-26 21:21:51 +01:00
Nicolas Dufresne
ec69ad4e8a buffer: Only set TAG_MEMORY if the memory has been replaced
Currently we set TAG_MEMORY as soon a resize changes the size of one
of the memory. This has the side effect that buffer pool cannot know if
the memory have simply been resized, or if the memorys has been replaced.
This make it hard to actually implement _reset(). Instead, only set the
TAG_MEMORY if one or more memory has been replaced, and do a light
sanity check of the size.

https://bugzilla.gnome.org/show_bug.cgi?id=727109
2014-04-26 15:03:04 -04:00
Showayb Zahda
d17438d5fd docs: add docs for various GstPad macros
https://bugzilla.gnome.org/show_bug.cgi?id=723652
2014-04-26 17:05:41 +01:00
Sebastian Dröge
b76d336549 bin: When going to READY make sure to always deactivate pads
We might not have reached PAUSED yet because of an async error,
but nonetheless we want to make sure that the pads are always
deactivated in READY state.
2014-04-25 15:38:39 +02:00
Sebastian Dröge
ce8752c5ce bin: Don't left-shift into the sign bit, the result is undefined 2014-04-22 18:23:15 +02:00
Sebastian Dröge
3cbcfa1d7e value: Use an unsigned 64 bit integer as a mask
We shift the mask to the right later and shifting the result
of shifting over the sign bit is undefined.
2014-04-22 18:16:10 +02:00
Edward Hervey
8b51e9dc60 gstvalue: Prevent division or modulo by zero
The step can end up being zero if the underlying value isn't a valid
range GValue.

In those cases, return FALSE.

We don't use g_return*_if_fail since it will already have been triggered
by the above-mentionned _get_step() functions.

CID #1037132
2014-04-17 13:20:45 +02:00