Commit Graph

209 Commits

Author SHA1 Message Date
Bill Somerville
2aea76777a Remember power level setting used for tune
Patch provided by Mike W9MDB, thanks.

git-svn-id: svn+ssh://svn.code.sf.net/p/wsjt/wsjt/branches/wsjtx@6281 ab8295b8-cf94-4d9e-aec4-7959e3be5d79
2015-12-16 15:32:11 +00:00
Joe Taylor
475118428e Add facility to degrade S/N of data from .wav files.
git-svn-id: svn+ssh://svn.code.sf.net/p/wsjt/wsjt/branches/wsjtx@6165 ab8295b8-cf94-4d9e-aec4-7959e3be5d79
2015-11-23 18:05:36 +00:00
Bill Somerville
1a23757b26 Reintegrate merge from wsjtx_exp branch.
git-svn-id: svn+ssh://svn.code.sf.net/p/wsjt/wsjt/branches/wsjtx@6122 ab8295b8-cf94-4d9e-aec4-7959e3be5d79
2015-11-18 01:28:12 +00:00
Bill Somerville
58fab3474d Add WSPR decodes to UDP message protocol
The message_aggregator (MessageAggregator.cpp) has  been updated to do
something with WSPR decodes.

git-svn-id: svn+ssh://svn.code.sf.net/p/wsjt/wsjt/branches/wsjtx@6101 ab8295b8-cf94-4d9e-aec4-7959e3be5d79
2015-11-15 23:03:11 +00:00
Joe Taylor
a7e2168532 Remove code associated with the unimplemented JT9W mode.
git-svn-id: svn+ssh://svn.code.sf.net/p/wsjt/wsjt/branches/wsjtx@6061 ab8295b8-cf94-4d9e-aec4-7959e3be5d79
2015-11-09 17:19:48 +00:00
Bill Somerville
76eed0ecc4 Start dealing with thread related object lifetime issues
There are  several object  lifetime issues that  can cause  crashes on
application close down.  This change  is the first phase of addressing
these issues.

git-svn-id: svn+ssh://svn.code.sf.net/p/wsjt/wsjt/branches/wsjtx@5719 ab8295b8-cf94-4d9e-aec4-7959e3be5d79
2015-07-13 11:00:55 +00:00
Bill Somerville
1c8d8f749c Ensure that the WSPR Tx percentage is correctly initialized
Also tidied some code up.

git-svn-id: svn+ssh://svn.code.sf.net/p/wsjt/wsjt/branches/wsjtx@5700 ab8295b8-cf94-4d9e-aec4-7959e3be5d79
2015-07-07 19:02:25 +00:00
Bill Somerville
e0d4a2b2fb Update decodes widgets when entering and leaving WSPR modes
git-svn-id: svn+ssh://svn.code.sf.net/p/wsjt/wsjt/branches/wsjtx@5674 ab8295b8-cf94-4d9e-aec4-7959e3be5d79
2015-07-03 17:33:20 +00:00
Bill Somerville
3dd824ad6b Make the main window more portable and font change capable
The Rx meter  is now a better  Qt citizen and can be  resized. Added a
more obvious peak signal indicator. It  is now a custom widget derived
from QFrame and is now directly added via promotion in Designer.

Added a custom  widget to act as  a letter spin box, this  is used for
sub mode control.  Switched the frequency tolerance widget  to a combo
box with preset  values so that it is more  uniform across systems and
font sizes.

Added container widgets  for group control of various  UI widgets such
as  QSO controls,  DX call  controls and  WSPR controls.  Introduced a
stacked widget to allow the WSPR controls to be swapped in in place of
the "QSO" controls. The "QSO" controls  are are the Rx, Tx and related
controls along with  the main tab widget with the  message buttons and
fields. This means  that the WSPR version of the  main window (and EME
Echo mode) are now much cleaner.

Increased the  size of the  rig control  widget and styled  its colour
using a dynamic property so that it  can be defined in the Designer UI
definition. Reinstated it  as a push button to do  a rig control reset
and retry after an error.

Reset most UI widgets to default properties, particularly removing any
fixed sizes so that they can resize freely when fonts are changed. The
overall layout is now controlled almost exclusively by stretch factors
on some of the rows and columns of the various grid layout managers.

git-svn-id: svn+ssh://svn.code.sf.net/p/wsjt/wsjt/branches/wsjtx@5630 ab8295b8-cf94-4d9e-aec4-7959e3be5d79
2015-06-25 22:41:13 +00:00
Bill Somerville
46032112ca Clear generated messages when clearing DX after logging
git-svn-id: svn+ssh://svn.code.sf.net/p/wsjt/wsjt/branches/wsjtx@5623 ab8295b8-cf94-4d9e-aec4-7959e3be5d79
2015-06-18 22:18:05 +00:00
Joe Taylor
df873479d0 Add UTC to WSPR Tx dividing line; add WSPR Rx dividing line when no decodes;
increase ranges of Gaiz/Zero sliders on Echo Graph.


git-svn-id: svn+ssh://svn.code.sf.net/p/wsjt/wsjt/branches/wsjtx@5605 ab8295b8-cf94-4d9e-aec4-7959e3be5d79
2015-06-13 14:24:54 +00:00
Joe Taylor
55cdeea079 Oops! Bad Rx frequencies were being recorded in WSPR_history.txt. Fixed.
git-svn-id: svn+ssh://svn.code.sf.net/p/wsjt/wsjt/branches/wsjtx@5603 ab8295b8-cf94-4d9e-aec4-7959e3be5d79
2015-06-12 21:46:54 +00:00
Bill Somerville
3df86ef17e Initialize m_tuneup to ensure halt Tx button behaves
git-svn-id: svn+ssh://svn.code.sf.net/p/wsjt/wsjt/branches/wsjtx@5601 ab8295b8-cf94-4d9e-aec4-7959e3be5d79
2015-06-12 19:03:37 +00:00
Joe Taylor
f3a0cee87c WSPR mode appends Date Time Freq T/R N to file WSPR_history.txt.
For possible statistical analysis.  N is the number of decoded signals.


git-svn-id: svn+ssh://svn.code.sf.net/p/wsjt/wsjt/branches/wsjtx@5599 ab8295b8-cf94-4d9e-aec4-7959e3be5d79
2015-06-12 17:29:12 +00:00
Bill Somerville
588c037ae9 Do not make unneeded rig adjustments when Doppler tracking disabled
git-svn-id: svn+ssh://svn.code.sf.net/p/wsjt/wsjt/branches/wsjtx@5595 ab8295b8-cf94-4d9e-aec4-7959e3be5d79
2015-06-12 00:26:44 +00:00
Bill Somerville
724d5703c4 Add a flag for a mode to enforce simplex i.e. WSPR
git-svn-id: svn+ssh://svn.code.sf.net/p/wsjt/wsjt/branches/wsjtx@5593 ab8295b8-cf94-4d9e-aec4-7959e3be5d79
2015-06-11 22:42:41 +00:00
Joe Taylor
e38c71af1e Clear Message Averaging window when ClrAvg is clicked. Remove some
obsolete code.  Tweak a label.


git-svn-id: svn+ssh://svn.code.sf.net/p/wsjt/wsjt/branches/wsjtx@5588 ab8295b8-cf94-4d9e-aec4-7959e3be5d79
2015-06-11 17:18:07 +00:00
Joe Taylor
289b4c70f8 Correct the bounds error test in avecho. Ensure proper GUI controls
visible in Echo mode. Reset nsum=0 when Tx Enable is toggled ON in Echo mode.
Don't restart Monitor after finishing a sequence of Echo transmissions.


git-svn-id: svn+ssh://svn.code.sf.net/p/wsjt/wsjt/branches/wsjtx@5584 ab8295b8-cf94-4d9e-aec4-7959e3be5d79
2015-06-11 15:32:55 +00:00
Bill Somerville
aa561deed2 Refactor astro functionality into Astro class
Improved astronomical data and Doppler tracking control window widgets
and layout  management to make  it more platform independent  and font
change tolerant.

git-svn-id: svn+ssh://svn.code.sf.net/p/wsjt/wsjt/branches/wsjtx@5580 ab8295b8-cf94-4d9e-aec4-7959e3be5d79
2015-06-11 13:36:13 +00:00
Joe Taylor
7137098869 Results of Echo mode to text window. (Not yet calibrated!)
git-svn-id: svn+ssh://svn.code.sf.net/p/wsjt/wsjt/branches/wsjtx@5567 ab8295b8-cf94-4d9e-aec4-7959e3be5d79
2015-06-09 19:04:21 +00:00
Bill Somerville
28b4c31dee Various WSPR fixes
Make WSPRnet.org spot uploads tolerant  of network issues, spots still
get  discarded for  any period  that  has problems  but now  uploading
resumes on the next period.

Ensure that  decoded text starts  with correct  font by not  using the
base class append method directly.

Fixed a major  memory leak in the WSPRNet class  which was not freeing
processed request reply objects.

Added some helpful debug prints in WSPRnet.org spot processing.

Also  tidied  up a  number  of  class  implementations that  were  not
including he MOC generated code.

git-svn-id: svn+ssh://svn.code.sf.net/p/wsjt/wsjt/branches/wsjtx@5560 ab8295b8-cf94-4d9e-aec4-7959e3be5d79
2015-06-09 14:30:23 +00:00
Joe Taylor
4b1c3c319f Echo spectrum appears OK; must test Doppler corrections in both modes.
git-svn-id: svn+ssh://svn.code.sf.net/p/wsjt/wsjt/branches/wsjtx@5559 ab8295b8-cf94-4d9e-aec4-7959e3be5d79
2015-06-09 00:43:07 +00:00
Joe Taylor
fa96482008 Basic functionality of Echo spectrum is in place.
git-svn-id: svn+ssh://svn.code.sf.net/p/wsjt/wsjt/branches/wsjtx@5557 ab8295b8-cf94-4d9e-aec4-7959e3be5d79
2015-06-08 19:42:20 +00:00
Bill Somerville
982b4edcd0 Refactored help windows into a helpful class
Also  used it  to implement  the  prefixes, shortcuts  and mouse  help
windows.

git-svn-id: svn+ssh://svn.code.sf.net/p/wsjt/wsjt/branches/wsjtx@5554 ab8295b8-cf94-4d9e-aec4-7959e3be5d79
2015-06-08 16:05:01 +00:00
Bill Somerville
05a060c740 Make addon prefixes & suffixes help window platform independent
Also use a style  sheet to set the font as  widget level font settings
are overriden when the global default font is changed in settings.

git-svn-id: svn+ssh://svn.code.sf.net/p/wsjt/wsjt/branches/wsjtx@5553 ab8295b8-cf94-4d9e-aec4-7959e3be5d79
2015-06-08 14:30:31 +00:00
Joe Taylor
01dfb567f5 Don't allow a partial transmission in Echo mode. Fix RA, Dec, and Tsky
returned by astro().  



git-svn-id: svn+ssh://svn.code.sf.net/p/wsjt/wsjt/branches/wsjtx@5548 ab8295b8-cf94-4d9e-aec4-7959e3be5d79
2015-06-06 18:02:39 +00:00
Bill Somerville
db731fefb9 Improved function name
git-svn-id: svn+ssh://svn.code.sf.net/p/wsjt/wsjt/branches/wsjtx@5547 ab8295b8-cf94-4d9e-aec4-7959e3be5d79
2015-06-06 13:40:10 +00:00
Joe Taylor
1b0ba09639 More changes related to EME Echo mode.
git-svn-id: svn+ssh://svn.code.sf.net/p/wsjt/wsjt/branches/wsjtx@5542 ab8295b8-cf94-4d9e-aec4-7959e3be5d79
2015-06-06 00:02:02 +00:00
Steven Franke
7e3c93553f Enable new TX scheduler for WSPR mode.
git-svn-id: svn+ssh://svn.code.sf.net/p/wsjt/wsjt/branches/wsjtx@5533 ab8295b8-cf94-4d9e-aec4-7959e3be5d79
2015-06-04 22:25:27 +00:00
Joe Taylor
d72b85d6c9 Progressing toward activation of EME Echo mode. Not there yet!
git-svn-id: svn+ssh://svn.code.sf.net/p/wsjt/wsjt/branches/wsjtx@5528 ab8295b8-cf94-4d9e-aec4-7959e3be5d79
2015-06-04 19:46:12 +00:00
Joe Taylor
437c8c5c3f Starting to add EME Echo mode. (Not yet functional!)
git-svn-id: svn+ssh://svn.code.sf.net/p/wsjt/wsjt/branches/wsjtx@5522 ab8295b8-cf94-4d9e-aec4-7959e3be5d79
2015-06-04 16:42:38 +00:00
Bill Somerville
f3930eb5c8 Polish the UI for WSPR and WSPR band hopping
Provide  a  dialog for  band  hopping  scheduling which  replaces  tab
four. Ensure that split mode is  not used for WSPR. Select the correct
tab  for WSPR  operation.  Shift WSPR  band hopping  code  out of  the
MainWindow class.

git-svn-id: svn+ssh://svn.code.sf.net/p/wsjt/wsjt/branches/wsjtx@5517 ab8295b8-cf94-4d9e-aec4-7959e3be5d79
2015-06-04 01:45:40 +00:00
Bill Somerville
4a445b0779 Add FrequencyList methods to retrieve band name sets
Start to rationalize the new WSPR code with the data models.

git-svn-id: svn+ssh://svn.code.sf.net/p/wsjt/wsjt/branches/wsjtx@5475 ab8295b8-cf94-4d9e-aec4-7959e3be5d79
2015-05-31 11:51:40 +00:00
Joe Taylor
7390bf21ce WSPR-mode behavior changes.
Forbid consecutive Tx sequences.
Mark Tx sequences with horizontal yellow line in waterfall.
Reduce the wait time in msleep() command (mainwindow.cpp line 4342).


git-svn-id: svn+ssh://svn.code.sf.net/p/wsjt/wsjt/branches/wsjtx@5470 ab8295b8-cf94-4d9e-aec4-7959e3be5d79
2015-05-30 16:08:20 +00:00
Steven Franke
c0fc6ef382 Commit wspr tone frequency patch and fix GrayLineDuration typo
git-svn-id: svn+ssh://svn.code.sf.net/p/wsjt/wsjt/branches/wsjtx@5465 ab8295b8-cf94-4d9e-aec4-7959e3be5d79
2015-05-29 19:23:54 +00:00
Bill Somerville
f200506571 Add mode dependent working frequencies
Working frequencies are mode dependent  and a reset to defaults button
has been added.

Also re-factored much of the model  and item delegate code to simplify
several  of the  model  implementations. Introduced  a single  routine
called from main to register the custom types with Qt.

git-svn-id: svn+ssh://svn.code.sf.net/p/wsjt/wsjt/branches/wsjtx@5453 ab8295b8-cf94-4d9e-aec4-7959e3be5d79
2015-05-28 23:22:17 +00:00
Bill Somerville
0f7708a98a Respond to clicks on Gen/Free radio buttons even if checked
The generated and free text radio buttons now refresh the sent message
even if teh clicked radio button is already checked.

git-svn-id: svn+ssh://svn.code.sf.net/p/wsjt/wsjt/branches/wsjtx@5444 ab8295b8-cf94-4d9e-aec4-7959e3be5d79
2015-05-28 15:44:03 +00:00
Bill Somerville
34f8924cfc Reintegrate the wsjtx_exp branch into the trunk
This  merge brings  the WSPR  feature development  into the  main line
ready for release in a future v1.6 release.



git-svn-id: svn+ssh://svn.code.sf.net/p/wsjt/wsjt/branches/wsjtx@5424 ab8295b8-cf94-4d9e-aec4-7959e3be5d79
2015-05-27 13:08:28 +00:00
Bill Somerville
a51c5c4251 Reintegrate Joe's experimental VHF & up features
As at ^/branches/wsjtx_exp@5271



git-svn-id: svn+ssh://svn.code.sf.net/p/wsjt/wsjt/branches/wsjtx@5272 ab8295b8-cf94-4d9e-aec4-7959e3be5d79
2015-04-22 17:48:03 +00:00
Bill Somerville
3f75b4144a Send status information to UDP server
To  facilitate interaction  with other  applications WSJT-X  now sends
status  updates  to  a  predefined   UDP  server  or  multicast  group
address. The  status updates include the  information currently posted
to  the  decodes.txt and  wsjtx_status.txt  files.   An optional  back
communications  channel is  also implemented  allowing the  UDP server
application to control some basic actions in WSJT-X.

A reference implementaion of a typical UDP server written in C++ using
Qt is  provided to demonstrate  these facilities. This  application is
not intended  as a user  tool but  only as an  example of how  a third
party application may interact with WSJT-X.

The  UDP messages  Use QDataStream  based serialization.  Messages are
documented in  NetworkMessage.hpp along with some  helper classes that
simplify the building and decoding of messages.

Two  message  handling  classes   are  introduced,  MessageClient  and
MessageServer.  WSJT-X uses the MessageClient class to manage outgoing
and  incoming  UDP  messages   that  allow  communication  with  other
applications.   The MessageServer  class implements  the kind  of code
that a  potential cooperating  application might use.   Although these
classes  use  Qt serialization  facilities,  the  message formats  are
easily  read and  written  by  applications that  do  not  use the  Qt
framework.

MessageAggregator   is   a   demonstration   application   that   uses
MessageServer and  presents a GUI  that displays messages from  one or
more  WSJT-X instances  and  allows sending  back a  CQ  or QRZ  reply
invocation  by double  clicking  a decode.   This  application is  not
intended as  a user facing tool  but rather as a  demonstration of the
WSJT-X UDP messaging facility. It  also demonstrates being a multicast
UDP server by allowing multiple instances to run concurrently. This is
enabled by using an appropriate  multicast group address as the server
address.  Cooperating   applications  need  not   implement  multicast
techniques but  it is recomended  otherwise only a  single appliaction
can act as a broadcast message (from WSJT-X) recipient.

git-svn-id: svn+ssh://svn.code.sf.net/p/wsjt/wsjt/branches/wsjtx@5225 ab8295b8-cf94-4d9e-aec4-7959e3be5d79
2015-04-15 16:40:49 +00:00
Bill Somerville
083416e8ba Refine the special treatment of 73 messages
The  feature to  set the  next message  to be  sent to  auto generated
message number 6 (CQ) is now only trggered when a transmission of a 73
message is made for the first time in a QSO. If a second 73 message is
required, for example when a QSO  partner repeats an RRR message after
your 73 message, simply double  clicking the RRR message will initiate
another 73 message without triggering a  log QSO dialog or setting the
next message to CQ.

git-svn-id: svn+ssh://svn.code.sf.net/p/wsjt/wsjt/branches/wsjtx@5065 ab8295b8-cf94-4d9e-aec4-7959e3be5d79
2015-03-17 14:59:19 +00:00
Bill Somerville
2b781d1685 Improved automatic message handling
More consistent and accurate processing of compund callsigns including
recognizing the  user's call  in both base  and fully  qualified form,
extracting reports  from special type  one and type two  compound call
messages.  Ensure that  "CQ DX"  message prefixes  are recognized  and
processd correctly.

The  cycle of  double  clicking through  a QSO  has  been enhanced  to
recognoize the  standard messages correctly  and use the  correct next
message. The automatic  transmission button "Enable Tx"  now does what
it says and does not double as a stop transmit button. This allows the
current transmission  to complete  even if the  automatic transmission
feature is  disabled. In line with  this the "stop sending  after a 73
message is sent"  feature turns off the  automatic transmission enable
at the start of the sending of  a 73 message and also the next message
is now set up as the CQ  message automatically in this scenario.  A 73
message is now  either a standard message containing the  word "73" or
any free text  message containing "73" (not necessarily  as a distinct
word").

git-svn-id: svn+ssh://svn.code.sf.net/p/wsjt/wsjt/branches/wsjtx@5055 ab8295b8-cf94-4d9e-aec4-7959e3be5d79
2015-03-14 19:13:18 +00:00
Bill Somerville
6bd4602662 QtCreator/QtDesigner don't understand their own classes
Wrapping the  Ui:: UI  class in a  QScopedPointer, a  perfectly proper
thing to do, causes QtDesigner to fail to grok the code.

git-svn-id: svn+ssh://svn.code.sf.net/p/wsjt/wsjt/branches/wsjtx@5019 ab8295b8-cf94-4d9e-aec4-7959e3be5d79
2015-03-08 00:06:43 +00:00
Bill Somerville
9a8521d2d4 Add a progress dialog to show that FFT optimization is doing something
git-svn-id: svn+ssh://svn.code.sf.net/p/wsjt/wsjt/branches/wsjtx@4965 ab8295b8-cf94-4d9e-aec4-7959e3be5d79
2015-02-15 00:48:38 +00:00
Bill Somerville
127c633a97 Bring colour settings into line with general configuration strategy
Colours behave  like other  configuration items  and changes  are only
applied when the Settings UI is dismissed via the "OK" button.

Simplified font settings and use  style sheets consistently to set the
application and decoded  text fonts. This is necessary  because any UI
widget that  has a style  sheet applied does not  honor a font  set by
QWidget::setFont()  even if  there is  no  font setting  in the  style
sheet, this is broken behaviour IMHO  but that is the way Qt currently
works.

Use a  style sheet to style  the frequency display and  clock. This is
necessary to  allow fonts to  be cascaded through parent  style sheets
and still be overridden on these widgets.

Simplify  the decoded  text  widgets,  there is  no  need  to use  the
QTextBrowser  as a  super class  since  the simpler  QTextEdit set  as
read-only is sufficient. Also removed  colour setting via a background
brush  as it  doesn't  work  and the  HTML  'bgcolor' attribute  works
correctly.

Change  to  UI  properties  of  the  decoded  text  widgets  to  allow
horizontal scrolling if required, this  allows larger fonts to be used
without truncating decoded messages.

git-svn-id: svn+ssh://svn.code.sf.net/p/wsjt/wsjt/branches/wsjtx@4957 ab8295b8-cf94-4d9e-aec4-7959e3be5d79
2015-02-13 08:53:02 +00:00
Bill Somerville
f37ed4cd78 Take advantage of the new KVASD v1.12
Pass the  temporary directory to  jt9 and use  it to give  the correct
paths  to  temporary files.  Also  jt9  passes  the absolute  path  to
kvasd.dat in the temporary directory to kvasd.

Clear out all the annoying cruft that has accumulated due to having to
run with $CWD as the temporary directory.

Use QStandardPaths  to find the  writable data directory  where needed
rather than passing it around  between objects. This now works because
the $CWD hasn't been changed.

Do away with the CMake option WSJT_STANDARD_FILE_LOCATIONS as it is no
longer needed.

Fix astro status file azel.dat formatting.

git-svn-id: svn+ssh://svn.code.sf.net/p/wsjt/wsjt/branches/wsjtx@4732 ab8295b8-cf94-4d9e-aec4-7959e3be5d79
2014-12-03 00:06:54 +00:00
Joe Taylor
021f677687 Add wisdom for the FFTs done by symspec_(), wsjtx[.exe].
Also complete the wrapper code in wisdom.c.
TBD: should be possible to use fftw3f.f03 instead of the ad hoc wisdom.c.


git-svn-id: svn+ssh://svn.code.sf.net/p/wsjt/wsjt/branches/wsjtx@4617 ab8295b8-cf94-4d9e-aec4-7959e3be5d79
2014-11-21 15:17:22 +00:00
Joe Taylor
0e96882d8b Improve the way messages with compound calls are automatically generated.
Routine packmsg now tries the shortlist (Type 1 prefix or suffix) first.
Then it tries to to make a valid message using a Type 2 prefix or suffix.
If both fail, it packs the first 13 characters as a free-text message.

The GUI now generates the most useful messages with compound callsigns
of all valid types.



git-svn-id: svn+ssh://svn.code.sf.net/p/wsjt/wsjt/branches/wsjtx@4533 ab8295b8-cf94-4d9e-aec4-7959e3be5d79
2014-10-19 00:56:41 +00:00
Bill Somerville
c40cec50de Menu action to open the log directory
Since the log files have moved to  a hidden directory a menu action to
open the logs directory in a suitable system applicaiton is needed.

Added "Open log directory" to File manu bar pop up menu.

Merged from wsjtx-1.4 branch.




git-svn-id: svn+ssh://svn.code.sf.net/p/wsjt/wsjt/branches/wsjtx@4471 ab8295b8-cf94-4d9e-aec4-7959e3be5d79
2014-10-04 11:47:03 +00:00
Bill Somerville
8d3c86c399 Disallow multiple instances without a unique rig name
Because of confilicts using the  shared memory to communicate with jt9
only one instance of WSJT-X may run with each unique key (rig name).

Added a QLockFile for each unique  key in the temp directory and logic
to deal with stale locks and retries.

git-svn-id: svn+ssh://svn.code.sf.net/p/wsjt/wsjt/branches/wsjtx@4465 ab8295b8-cf94-4d9e-aec4-7959e3be5d79
2014-10-03 16:07:43 +00:00