Commit graph

9082 commits

Author SHA1 Message Date
Sebastian Dröge
681e4d01c8 gst/gstregistrybinary.*: Don't write and check a CRC for the binary registry file. It's guaranteed that the registry ...
Original commit message from CVS:
* gst/gstregistrybinary.c: (gst_registry_binary_write_chunk),
(gst_registry_binary_initialize_magic),
(gst_registry_binary_write_cache),
(gst_registry_binary_check_magic):
* gst/gstregistrybinary.h:
Don't write and check a CRC for the binary registry file. It's
guaranteed that the registry is completely written (it's first written
to a temporary file and then moved) and if the registry was corrupted
by some hardware failure we would have bigger problems.
Bump binary registry version to 0.10.21.1 for this as it's an
incompatible change and to ensure that the registry gets rebuild
after the update.
This saves some milliseconds for reading/writing the registry.
Fixes bug #560399.
2008-11-12 10:39:25 +00:00
Wim Taymans
6f621b03a8 docs/random/wtay/poll-timeout: Some pseudo code for how we could implement clock timeouts with GstPoll.
Original commit message from CVS:
* docs/random/wtay/poll-timeout:
Some pseudo code for how we could implement clock timeouts with GstPoll.
2008-11-11 14:50:24 +00:00
Thomas Vander Stichele
a0e5eab525 plugins/elements/gstfilesink.c: Update Author string to match others.
Original commit message from CVS:
* plugins/elements/gstfilesink.c:
Update Author string to match others.
2008-11-10 13:56:51 +00:00
Wim Taymans
7f987200b5 gst/gstvalue.c: Reorganize some more, be more conservative with the GST_TYPE_ARRAY not being fixed and inline the tri...
Original commit message from CVS:
* gst/gstvalue.c: (gst_type_is_fixed), (gst_value_is_fixed):
Reorganize some more, be more conservative with the GST_TYPE_ARRAY not
being fixed and inline the trivial check.
2008-11-06 15:37:16 +00:00
Wim Taymans
18aeb9a41e gst/gstcaps.c: Callgrind micro optimisations.
Original commit message from CVS:
* gst/gstcaps.c: (gst_caps_copy), (_gst_caps_free),
(gst_caps_merge_structure), (gst_caps_get_structure),
(gst_caps_copy_nth), (gst_caps_set_simple),
(gst_caps_set_simple_valist), (gst_caps_is_fixed),
(gst_caps_is_equal_fixed), (gst_caps_intersect),
(gst_caps_subtract), (gst_caps_normalize), (gst_caps_do_simplify),
(gst_caps_to_string):
Callgrind micro optimisations.
Avoid array bounds checks and force inline of trivial function.
* gst/gstobject.c: (gst_object_set_name_default):
-1 is equivalent to letting glib to the strlen but then there is more
room for optimisations and it's not our fault.
* gst/gststructure.c: (gst_structure_id_empty_new_with_size):
no need to clear the array, we're cool.
* gst/gstvalue.c: (gst_type_is_fixed), (gst_value_is_fixed):
The most common _is_fixed() check is done on fundamental glib base
types so we check this first instead of doing a huge amount of
useless GST_TYPE_ARRAY calls.
2008-11-06 15:09:34 +00:00
Wim Taymans
812640dd18 gst/gstevent.h: Add a SKIP seek flag for use with advanced trickmodes.
Original commit message from CVS:
* gst/gstevent.h:
Add a SKIP seek flag for use with advanced trickmodes.
API: GstSeekFlags::GST_SEEK_FLAG_SKIP
2008-11-06 12:03:17 +00:00
Wim Taymans
209c57085c gst/gststructure.c: No need to memset, we can clear the value ourselves.
Original commit message from CVS:
* gst/gststructure.c: (gst_structure_id_empty_new_with_size):
No need to memset, we can clear the value ourselves.
* gst/gstvalue.c: (gst_type_is_fixed),
(gst_value_get_compare_func):
Some optimisations from a few callgrind sessions:
When checking if a type is fixed, check for trivial fundamental types
first before checking types for which we need to get the type followed
by the heavy duty type checks, this reduces the amount of
g_type_fundamental() calls a lot.
When getting the compare function, first check for our registered types.
If that fails, do the heavy duty g_type_is_a() checks, reduces the
amount of g_type_is_a() considerably.
2008-11-05 16:57:35 +00:00
Wim Taymans
773c1e4c1d docs/design/part-TODO.txt: Mumble something about removing GstXML.
Original commit message from CVS:
* docs/design/part-TODO.txt:
Mumble something about removing GstXML.
2008-11-05 11:17:24 +00:00
Wim Taymans
16e6c3ef96 gst/gstbin.c: Get the seqnum before we dispose the message.
Original commit message from CVS:
* gst/gstbin.c: (gst_bin_handle_message_func):
Get the seqnum before we dispose the message.
2008-11-04 18:10:04 +00:00
Wim Taymans
5605bbc5d5 docs/design/part-TODO.txt: Refer to the framestepping document.
Original commit message from CVS:
* docs/design/part-TODO.txt:
Refer to the framestepping document.
2008-11-04 16:10:04 +00:00
Wim Taymans
0a71170006 Copy seqnums from events to messages so that they can all be related back to eachother.
Original commit message from CVS:
* gst/gstbin.c: (bin_handle_async_start),
(gst_bin_handle_message_func), (gst_bin_query):
* libs/gst/base/gstbasesink.c: (gst_base_sink_render_object),
(gst_base_sink_event), (gst_base_sink_change_state):
* libs/gst/base/gstbasesrc.c: (gst_base_src_perform_seek),
(gst_base_src_loop), (gst_base_src_change_state):
Copy seqnums from events to messages so that they can all be related
back to eachother.
2008-11-04 15:56:55 +00:00
Wim Taymans
57792e66ac tools/gst-launch.c: Print the message seqnums.
Original commit message from CVS:
* tools/gst-launch.c: (event_loop):
Print the message seqnums.
2008-11-04 15:52:09 +00:00
Andy Wingo
1f1d642981 gst/gstutils.c (gst_util_seqnum_next): Refactor for clarity.
Original commit message from CVS:
2008-11-04  Andy Wingo  <wingo@pobox.com>

* gst/gstutils.c (gst_util_seqnum_next): Refactor for clarity.

Also add API: to previous changelog entry.
2008-11-04 13:56:37 +00:00
Andy Wingo
5f5fbbdd7d Add sequence numbers to events and messages. See #559250.
Original commit message from CVS:
2008-11-04  Andy Wingo  <wingo@pobox.com>

Add sequence numbers to events and messages. See #559250.

* gst/gstutils.c (gst_util_seqnum_next, gst_util_seqnum_compare):
New functions.

* gst/gstevent.h:
* gst/gstevent.c (_gst_event_copy, gst_event_new): Initialize new
events with a new sequence number, and copy it when copying.
(gst_event_get_seqnum, gst_event_set_seqnum): Accessors for an
event's sequence number.

* gst/gstmessage.h:
* gst/gstmessage.c (_gst_message_copy, gst_message_new_custom):
(gst_event_get_seqnum, gst_event_set_seqnum): As with events, so
with messages.

* docs/gst/gstreamer-sections.txt: Add new functions to the docs.
2008-11-04 12:22:53 +00:00
Wim Taymans
c6cc3bbca8 docs/manual/: Some Application Development Manual fixes thanks to
Original commit message from CVS:
* docs/manual/advanced-position.xml:
* docs/manual/basics-bins.xml:
* docs/manual/basics-bus.xml:
* docs/manual/basics-pads.xml:
* docs/manual/intro-gstreamer.xml:
* docs/manual/intro-preface.xml:
Some Application Development Manual fixes thanks to
Andrew Feren. Fixes #558459.
2008-11-04 11:55:08 +00:00
Stefan Kost
1d61cb0381 gst/gstregistrybinary.c: Don't bother with the GTimer if we don't output the results.
Original commit message from CVS:
* gst/gstregistrybinary.c:
Don't bother with the GTimer if we don't output the results.
2008-11-03 12:29:10 +00:00
David Schleef
6de992cf71 libs/gst/net/Makefile.am: Add WIN32_LIBS to libgstnet LIBADD. Fixes #557300.
Original commit message from CVS:
Patch by: David Schleef  <ds@schleef.org>
* libs/gst/net/Makefile.am:
Add WIN32_LIBS to libgstnet LIBADD. Fixes #557300.
2008-11-03 10:59:49 +00:00
Stefan Kost
0d430a59ef gst/gstregistrybinary.c: Oh my, studip, stupid me. Remove double stat() call.
Original commit message from CVS:
* gst/gstregistrybinary.c:
Oh my, studip, stupid me. Remove double stat() call.
2008-10-31 15:54:44 +00:00
Stefan Kost
5b29f0a1cc gst/gstpreset.c: Use g_unlink instead of unlink.
Original commit message from CVS:
* gst/gstpreset.c:
Use g_unlink instead of unlink.
* gst/gststructure.c:
Use glib type.
* gst/gstutils.c:
Add a FIXME:.
* gst/gsttaglist.c:
* gst/gsttypefind.c:
* gst/gstvalue.c:
Formatting & whitespaces.
2008-10-31 14:24:49 +00:00
Stefan Kost
fa7e7d29a2 plugins/elements/gstidentity.c: Doc typo. Use return value of parent_class->event.
Original commit message from CVS:
* plugins/elements/gstidentity.c:
Doc typo. Use return value of parent_class->event.
* plugins/elements/gsttypefindelement.c:
Chain up at the end for consistency.
2008-10-31 08:53:27 +00:00
Stefan Kost
7407326abb docs/: Change to xinclude based build - its faster and easier to maintain.
Original commit message from CVS:
* docs/Makefile.am:
* docs/gst/gstreamer-docs.sgml:
* docs/gst/gstreamer-sections.txt:
* docs/gst/running.xml:
* docs/libs/gstreamer-libs-docs.sgml:
Change to xinclude based build - its faster and easier to maintain.
2008-10-30 15:29:51 +00:00
Stefan Kost
588ab506b9 gst/: Use g_unlink() as none of these are directories.
Original commit message from CVS:
* gst/gstregistrybinary.c:
* gst/gstregistryxml.c:
Use g_unlink() as none of these are directories.
2008-10-30 14:15:14 +00:00
Wim Taymans
d0b44d1578 gst/gstpipeline.c: Some more comments.
Original commit message from CVS:
* gst/gstpipeline.c: (gst_pipeline_provide_clock_func):
Some more comments.
2008-10-29 17:04:50 +00:00
Wim Taymans
8798ea2cca libs/gst/base/gstbasetransform.c: If we have a fixate function, call it even if we already have fixed caps because th...
Original commit message from CVS:
* libs/gst/base/gstbasetransform.c:
(gst_base_transform_find_transform), (gst_base_transform_getrange):
If we have a fixate function, call it even if we already have fixed caps
because the subclass might add some caps. Makes audioconvert add a
default channel layout.
2008-10-27 15:02:48 +00:00
Wim Taymans
8d871b9c1d libs/gst/base/gstbasetransform.c: Clear the output buffer variable.
Original commit message from CVS:
* libs/gst/base/gstbasetransform.c:
(gst_base_transform_prepare_output_buffer),
(gst_base_transform_getrange):
Clear the output buffer variable.
Cleanups to the error path in the getrange function.
Fixes #557649.
2008-10-24 09:41:19 +00:00
Sebastian Dröge
5357a24dbf plugins/elements/: Use gst_buffer_try_new_and_alloc() and handle errors instead of using gst_buffer_new_and_alloc() w...
Original commit message from CVS:
* plugins/elements/gstfdsrc.c: (gst_fd_src_create):
* plugins/elements/gstfilesrc.c: (gst_file_src_create_read):
Use gst_buffer_try_new_and_alloc() and handle errors instead of
using gst_buffer_new_and_alloc() which aborts if the buffer couldn't
be allocated.
2008-10-23 12:52:58 +00:00
Wim Taymans
d2e5ffde24 gst/gstsegment.c: Set the last_stop to a more meaningful position when configuring the segment. ie. the start/stop of...
Original commit message from CVS:
* gst/gstsegment.c: (gst_segment_set_newsegment_full):
Set the last_stop to a more meaningful position when configuring the
segment. ie. the start/stop of the segment or clipped against the
updated segment boundaries.
* tests/check/gst/gstsegment.c: (GST_START_TEST):
Add some unit tests for the last_stop.
2008-10-23 09:49:07 +00:00
Sebastian Dröge
d3cb47b923 libs/gst/base/gstbytereader.c: Use GST_(READ|WRITE)_(FLOAT|DOUBLE)_(LE|BE) instead of our own copies of them.
Original commit message from CVS:
* libs/gst/base/gstbytereader.c:
Use GST_(READ|WRITE)_(FLOAT|DOUBLE)_(LE|BE) instead of our own
copies of them.
2008-10-23 07:11:54 +00:00
Sebastian Dröge
5644be89d7 API: Move float endianness conversion macros from libgstfloatcast to core as it's useful in general, even in core. Fi...
Original commit message from CVS:
* docs/gst/gstreamer-sections.txt:
* gst/gstutils.h:
API: Move float endianness conversion macros from libgstfloatcast
to core as it's useful in general, even in core. Fixes bug #555196.
This adds GDOUBLE_FROM_BE, GDOUBLE_FROM_LE, GDOUBLE_TO_BE,
GDOUBLE_TO_LE, GDOUBLE_SWAP_LE_BE, GFLOAT_FROM_BE, GFLOAT_FROM_LE,
GFLOAT_TO_BE, GFLOAT_TO_LE, GFLOAT_SWAP_LE_BE.
Also add GST_READ_ and GST_WRITE_ macros for floats and doubles:
GST_READ_FLOAT_LE, GST_READ_FLOAT_BE, GST_READ_DOUBLE_LE,
GST_READ_DOUBLE_BE, GST_WRITE_FLOAT_LE, GST_WRITE_FLOAT_BE,
GST_WRITE_DOUBLE_LE, GST_WRITE_DOUBLE_BE.
2008-10-23 07:09:21 +00:00
Sebastian Dröge
61ee0f414a API: Add gst_byte_reader_get_data and gst_byte_reader_peek_data to get a pointer to the data at the current position ...
Original commit message from CVS:
* docs/libs/gstreamer-libs-sections.txt:
* libs/gst/base/gstbytereader.c: (gst_byte_reader_get_data),
(gst_byte_reader_peek_data):
* libs/gst/base/gstbytereader.h:
* win32/common/libgstbase.def:
API: Add gst_byte_reader_get_data and gst_byte_reader_peek_data
to get a pointer to the data at the current position and have
a guaranteed size.
2008-10-22 14:47:04 +00:00
Jan Schmidt
d2c33f6d79 configure.ac: Fix a bug in the output of the configure script summary when --gst-disable-registry is supplied
Original commit message from CVS:
* configure.ac:
Fix a bug in the output of the configure script summary
when --gst-disable-registry is supplied
2008-10-22 14:25:16 +00:00
Jan Schmidt
446e8cb5e6 libs/gst/base/: Fix the names of 2 functions in the docs strings.
Original commit message from CVS:
* libs/gst/base/gstbitreader.c:
* libs/gst/base/gstbytereader.c:
Fix the names of 2 functions in the docs strings.
2008-10-22 13:47:20 +00:00
Wim Taymans
f59b56f75d libs/gst/base/gstbasetransform.c: Protect sink_alloc caps with the sinkpad lock to avoid nasty caps refcount problems...
Original commit message from CVS:
* libs/gst/base/gstbasetransform.c:
(gst_base_transform_prepare_output_buffer),
(gst_base_transform_buffer_alloc), (gst_base_transform_suggest):
Protect sink_alloc caps with the sinkpad lock to avoid nasty caps
refcount problems as seen in banshee and maybe also in farsight2.
Remove atomic int now that we need to take the lock anyways.
2008-10-21 16:30:41 +00:00
Wim Taymans
ca9ccf1d02 libs/gst/base/gstbasesink.c: Implement more seeking in pull mode.
Original commit message from CVS:
* libs/gst/base/gstbasesink.c: (gst_base_sink_default_do_seek),
(gst_base_sink_default_prepare_seek_segment),
(gst_base_sink_perform_seek), (gst_base_sink_get_position_last),
(gst_base_sink_get_position_paused), (gst_base_sink_get_position),
(gst_base_sink_query):
Implement more seeking in pull mode.
Use pad convert functions to convert position to the requested format.
Fix position/duration reporting in pull mode.
Implement position and duration reporting in other formats than time.
* libs/gst/base/gstbasesink.h:
Add member to keep track of when the segment is playing.
2008-10-20 15:18:14 +00:00
Wim Taymans
b340b510ce gst/gstpad.c: When we use gst_pad_alloc_buffer() without wanting to set the caps we also don't need to check if the c...
Original commit message from CVS:
* gst/gstpad.c: (gst_pad_configure_src):
When we use gst_pad_alloc_buffer() without wanting to set the caps we
also don't need to check if the caps are compatible because the caller
presumably is going to perform its own custom checks. Fixes some cases
where basetransform elements would error out when it was not needed.
2008-10-20 13:32:07 +00:00
Wim Taymans
b8609a7a76 libs/gst/base/gstbasesrc.c: Update comment.
Original commit message from CVS:
* libs/gst/base/gstbasesrc.c: (gst_base_src_perform_seek):
Update comment.
* libs/gst/base/gstbasetransform.c:
(gst_base_transform_handle_buffer),
(gst_base_transform_reconfigure):
Add some debug info.
* win32/common/libgstbase.def:
Add new method.
2008-10-20 13:29:06 +00:00
Stefan Kost
7198e34ee1 libs/gst/base/gstbasesrc.c: (gst_base_src_default_do_seek);
Original commit message from CVS:
* libs/gst/base/gstbasesrc.c: (gst_base_src_default_do_seek);
Remove duplicated assignment and log a message in failure case.
2008-10-19 19:57:25 +00:00
Dig Ge
8686083e85 tests/examples/helloworld/helloworld.c: Fix copy'n'paste bug in hello world example (#556900).
Original commit message from CVS:
Patch by: Dig Ge <dig.ge.cn at gmail com>
* tests/examples/helloworld/helloworld.c: (main):
Fix copy'n'paste bug in hello world example (#556900).
2008-10-19 10:13:39 +00:00
Wim Taymans
4561f3bf47 libs/gst/base/gstbasesink.c: Query the total number of bytes when activating the pad in pull mode.
Original commit message from CVS:
* libs/gst/base/gstbasesink.c: (gst_base_sink_pad_activate_pull),
(gst_base_sink_query):
Query the total number of bytes when activating the pad in pull mode.
Implement duration query in pull mode by using the installed pad convert
function to convert from bytes to the requested format.
2008-10-17 13:27:59 +00:00
Wim Taymans
fe07568997 Add method to commit the state in subclasses.
Original commit message from CVS:
* docs/libs/gstreamer-libs-sections.txt:
* libs/gst/base/gstbasesink.c: (gst_base_sink_do_preroll),
(gst_base_sink_flush_start), (gst_base_sink_flush_stop),
(gst_base_sink_event), (gst_base_sink_perform_seek),
(gst_base_sink_loop), (gst_base_sink_pad_activate_pull),
(gst_base_sink_send_event), (gst_base_sink_change_state):
* libs/gst/base/gstbasesink.h:
Add method to commit the state in subclasses.
Refactor the flush_start and flush_stop code because we need it for
flushing while seeking too.
Implement the beginnings of seeking in pull mode.
Use the segment last_stop field for the pulling offset.
Fix the pause method in pull mode.
Configure the segment to BYTES for pull mode.
API: GstBaseSink::gst_base_sink_do_preroll()
2008-10-16 14:09:18 +00:00
Wim Taymans
63b0da36b5 libs/gst/base/gstbasesrc.c: Update some docs.
Original commit message from CVS:
* libs/gst/base/gstbasesrc.c: (gst_base_src_class_init):
Update some docs.
2008-10-16 13:56:52 +00:00
Tim-Philipp Müller
1be929a4b6 gst/gstquark.c: Fix printf format warning.
Original commit message from CVS:
* gst/gstquark.c: (_priv_gst_quarks_initialize):
Fix printf format warning.
2008-10-14 17:10:43 +00:00
Sebastian Dröge
075811e654 plugins/elements/gsttee.c: Fix flow aggregation of tee. Error out immediately for all flow returns except OK and NOT_...
Original commit message from CVS:
* plugins/elements/gsttee.c: (gst_tee_handle_buffer):
Fix flow aggregation of tee. Error out immediately for all flow returns
except OK and NOT_LINKED, return NOT_LINKED if all pads are not linked
and return OK if at least one pad is linked.
Before we errored out on "fatal" flow returns (i.e. not for WRONG_STATE)
and otherwise returned the flow return of the last pad, which is wrong.
* tests/check/elements/tee.c: (_fake_chain), (_fake_chain_error),
(GST_START_TEST), (tee_suite):
Add unit tests for the flow aggregation.
2008-10-14 12:34:56 +00:00
Wim Taymans
97ec47cabb docs/design/part-TODO.txt: Remove item from the todo list because it was fixed with the latency state change rewrites.
Original commit message from CVS:
* docs/design/part-TODO.txt:
Remove item from the todo list because it was fixed with the latency
state change rewrites.
* docs/design/part-seeking.txt:
* docs/design/part-segments.txt:
Update some docs.
* gst/gstevent.c: (gst_event_new_new_segment_full),
(gst_event_parse_new_segment_full), (gst_event_new_buffer_size),
(gst_event_parse_buffer_size), (gst_event_new_qos),
(gst_event_parse_qos), (gst_event_new_seek),
(gst_event_parse_seek), (gst_event_new_latency),
(gst_event_parse_latency):
Use quarks to construct and parse events.
* gst/gstquark.c: (_priv_gst_quarks_initialize):
* gst/gstquark.h:
Add some more quarks to the table.
Emit a warning when the quark tables are not in sync.
* tests/check/gst/gstbus.c: (GST_START_TEST):
Add an assert.
2008-10-13 17:19:25 +00:00
Stefan Kost
35a2a49c00 plugins/: Don't install static libs for plugins. Fixes #550851 for core.
Original commit message from CVS:
* plugins/elements/Makefile.am:
* plugins/indexers/Makefile.am:
Don't install static libs for plugins. Fixes #550851 for core.
2008-10-13 16:47:51 +00:00
Wim Taymans
85de653640 gst/gstbus.c: Fix deadlock, g_source_get_id() cannot be called in finalize.
Original commit message from CVS:
* gst/gstbus.c: (gst_bus_source_finalize),
(gst_bus_add_watch_full_unlocked), (gst_bus_add_watch_full),
(gst_bus_enable_sync_message_emission),
(gst_bus_disable_sync_message_emission),
(gst_bus_add_signal_watch_full), (gst_bus_remove_signal_watch):
Fix deadlock, g_source_get_id() cannot be called in finalize.
Keep track of the watch source by keeping a pointer to the source object
instead.
Use the bus lock to protect access to the pointer to the current
watch source.
2008-10-13 10:50:17 +00:00
Olivier Crete
882c997103 gst/gstbus.c: Only allow one bus watch to be set at a time. This is necessary because the dispatcher pops the message...
Original commit message from CVS:
Base on Patch by: Olivier Crete <tester at tester dot ca>
* gst/gstbus.c: (gst_bus_source_finalize),
(gst_bus_add_watch_full), (gst_bus_add_signal_watch_full):
Only allow one bus watch to be set at a time. This is necessary
because the dispatcher pops the message from the bus and the second
watcher will then get NULL or the next message (and the first won't
get this next message then, etc). If more than one "watcher" is
required signal watches should be used. Fixes bug #526044.
2008-10-13 09:22:22 +00:00
Jan Schmidt
ba074c3689 tools/gst-launch.c: Change the printing of the 'buffering...' output to avoid putting a \r in a translateable string ...
Original commit message from CVS:
* tools/gst-launch.c:
Change the printing of the 'buffering...' output to avoid putting
a \r in a translateable string (flagged by the TP).
2008-10-12 22:16:00 +00:00
Sebastian Dröge
e6543e71ef gst/gstxml.c: Clarify that the save_thyself() and restore_thyself() virtual functions of GstObject need to be overrid...
Original commit message from CVS:
* gst/gstxml.c:
Clarify that the save_thyself() and restore_thyself() virtual
functions of GstObject need to be overriden, not
gst_object_(save|restore)_thyself() which is impossible.
Fixes bug #555700.
2008-10-10 15:38:06 +00:00
Wim Taymans
401cc7fe6a gst/gstpad.c: Revert a patch from 21 months ago that broke caps negotiation in pull mode. Basically, having a buffer ...
Original commit message from CVS:
* gst/gstpad.c: (gst_pad_get_range), (gst_pad_pull_range):
Revert a patch from 21 months ago that broke caps negotiation in pull
mode. Basically, having a buffer pass over a pad will trigger the
setcaps function when caps change, just like in push mode.
2008-10-10 15:27:37 +00:00