Commit Graph

2228 Commits

Author SHA1 Message Date
Michael Niedermayer 16e25ef34b Merge remote-tracking branch 'qatar/master'
* qatar/master:
  avconv: extend -r to work on any input stream.
  doc/avconv: expand documentation for the -s option.
  avconv: don't print filters inserted by avconv in stream mappings.
  avconv: merge configuration code for complex and simple filters
  avconv: split configuring input filters out of configure_complex_filter

Conflicts:
	configure
	doc/ffmpeg.texi
	ffmpeg.c
	tests/ref/fate/idroq-video-encode

Merged-by: Michael Niedermayer <michaelni@gmx.at>
2012-05-30 04:38:32 +02:00
Michael Niedermayer b0387edd5e Merge commit 'f919cc7df6ab844bc12f89fe7bef4fb915a47725'
* commit 'f919cc7df6ab844bc12f89fe7bef4fb915a47725':
  fate: fix acodec/vsynth tests for make 3.81
  pcm_mpeg: fix number of consumed bytes to include the header.
  avfilter: include required header file avfilter.h in video.h
  x86: Avoid movs on BUTTERFLYPS when in AVX mode
  x86: use new schema for ASM macros
  fate: convert codec-regression.sh to makefile rules
  fate: allow tests to specify unit size for psnr comparison
  fate: teach videogen/rotozoom to output a single raw video stream
  http: Add support for reusing the http socket for subsequent requests
  http: Add support for using persistent connections

Merged-by: Michael Niedermayer <michaelni@gmx.at>
2012-05-30 01:40:54 +02:00
Anton Khirnov c9cc76290f avconv: extend -r to work on any input stream.
This is done by automatically inserting a setpts filter.
2012-05-29 19:19:17 +02:00
Mans Rullgard 7263cd5544 fate: convert codec-regression.sh to makefile rules
Signed-off-by: Mans Rullgard <mans@mansr.com>
2012-05-29 08:35:41 +01:00
Michael Niedermayer f2bc2e8954 configure: disable avresample by default
avresample is redundant and unneeded

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
2012-05-28 19:43:57 +02:00
Michael Niedermayer f0e39889ad configure: add asyncts->avresample dependancy
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
2012-05-28 19:43:34 +02:00
Michael Niedermayer d5a17d7f4d configure: fix the wording for gpl incompatible licenses warnings
calling the 4 clause BSD license non free is quite a stretch ;)

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
2012-05-28 15:49:12 +02:00
Michael Niedermayer f997ac1c8b configure: openssl is compatible with the LGPL.
looking at the license i cannot see why they would be incompatible and
researching this matter a bit also turned up no reasons.

If i missed something, please dont hesitate to flame me and or revert

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
2012-05-28 15:49:07 +02:00
Clément Bœsch 5c3f79198c lavfi/deshake: add libavcodec dependency (dsputil). 2012-05-27 00:34:09 +02:00
Carl Eugen Hoyos c0532f4bbc Build the aformat filter when ffmpeg is built. 2012-05-24 12:26:31 +02:00
Carl Eugen Hoyos 36d0f8c9db Do not disable ffmpeg with --disable-everything. 2012-05-24 08:14:48 +02:00
Diego Biurrun db9e00f469 Remove libnut wrapper
libnut is unmaintained and known to be buggy; native NUT code exists.
2012-05-21 08:51:50 +02:00
Diego Biurrun 9309bdfe2c fate: change name of FATE samples location environment variable
FATE_SAMPLES is now used directly by the Makefiles, which induces the test
system to run a test with the value of the environment variable as name.
Renaming the environment variable to LIBAV_SAMPLES avoids this problem.
2012-05-21 08:51:49 +02:00
Nicolas George 83f954e859 configure: check for pthread_cancel. 2012-05-14 19:32:43 +02:00
Michael Niedermayer 1caf614bec Merge remote-tracking branch 'qatar/master'
* qatar/master:
  lavfi: autoinsert resample filter when necessary.
  lavfi: add lavr-based audio resampling filter.
  x86: vc1: drop MMX loop filter implementation, which uses MMX2 instructions.

Conflicts:
	configure
	doc/filters.texi
	libavcodec/x86/vc1dsp_mmx.c
	libavfilter/Makefile
	libavfilter/allfilters.c
	libavfilter/avfiltergraph.c

Merged-by: Michael Niedermayer <michaelni@gmx.at>
2012-05-13 00:13:49 +02:00
Anton Khirnov d371e7b988 lavfi: add lavr-based audio resampling filter. 2012-05-12 18:09:28 +02:00
Michael Niedermayer 015903294c Merge remote-tracking branch 'qatar/master'
* qatar/master: (25 commits)
  rv40dsp x86: MMX/MMX2/3DNow/SSE2/SSSE3 implementations of MC
  ape: Use unsigned integer maths
  arm: dsputil: fix overreads in put/avg_pixels functions
  h264: K&R formatting cosmetics for header files (part II/II)
  h264: K&R formatting cosmetics for header files (part I/II)
  rtmp: Implement check bandwidth notification.
  rtmp: Support 'rtmp_swfurl', an option which specifies the URL of the SWF player.
  rtmp: Support 'rtmp_flashver', an option which overrides the version of the Flash plugin.
  rtmp: Support 'rtmp_tcurl', an option which overrides the URL of the target stream.
  cmdutils: Add fallback case to switch in check_stream_specifier().
  sctp: be consistent with socket option level
  configure: Add _XOPEN_SOURCE=600 to Solaris preprocessor flags.
  vcr1enc: drop pointless empty encode_init() wrapper function
  vcr1: drop pointless write-only AVCodecContext member from VCR1Context
  vcr1: group encoder code together to save #ifdefs
  vcr1: cosmetics: K&R prettyprinting, typos, parentheses, dead code, comments
  mov: make one comment slightly more specific
  lavr: replace the SSE version of ff_conv_fltp_to_flt_6ch() with SSE4 and AVX
  lavfi: move audio-related functions to a separate file.
  lavfi: remove some audio-related function from public API.
  ...

Conflicts:
	cmdutils.c
	libavcodec/h264.h
	libavcodec/h264_mvpred.h
	libavcodec/vcr1.c
	libavfilter/avfilter.c
	libavfilter/avfilter.h
	libavfilter/defaults.c
	libavfilter/internal.h

Merged-by: Michael Niedermayer <michaelni@gmx.at>
2012-05-10 23:30:42 +02:00
Michael Niedermayer afcb67113d Revert "Remove libvorbis Vorbis decoding support. Our native decoder is complete"
Its useful to support the official decoder for comparission and debugging.

This reverts commit f9def9ccc6.

Conflicts:

	Changelog
	configure
	libavcodec/allcodecs.c
	libavcodec/libvorbis.c

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
2012-05-10 19:24:32 +02:00
Michael Niedermayer 61930bd0d7 Merge remote-tracking branch 'qatar/master'
* qatar/master: (27 commits)
  libxvid: Give more suitable names to libxvid-related files.
  libxvid: Separate libxvid encoder from libxvid rate control code.
  jpeglsdec: Remove write-only variable in ff_jpegls_decode_lse().
  fate: cosmetics: lowercase some comments
  fate: Give more consistent names to some RealVideo/RealAudio tests.
  lavfi: add avfilter_get_audio_buffer_ref_from_arrays().
  lavfi: add extended_data to AVFilterBuffer.
  lavc: check that extended_data is properly set in avcodec_encode_audio2().
  lavc: pad last audio frame with silence when needed.
  samplefmt: add a function for filling a buffer with silence.
  samplefmt: add a function for copying audio samples.
  lavr: do not try to copy to uninitialized output audio data.
  lavr: make avresample_read() with NULL output discard samples.
  fate: split idroq audio and video into separate tests
  fate: improve dependencies
  fate: add convenient shorthands for ea-vp6, libavcodec, libavutil tests
  fate: split some combined tests into separate audio and video tests
  fate: fix dependencies for probe tests
  mips: intreadwrite: fix inline asm for gcc 4.8
  mips: intreadwrite: remove unnecessary inline asm
  ...

Conflicts:
	cmdutils.h
	configure
	doc/APIchanges
	doc/filters.texi
	ffmpeg.c
	ffplay.c
	libavcodec/internal.h
	libavcodec/jpeglsdec.c
	libavcodec/libschroedingerdec.c
	libavcodec/libxvid.c
	libavcodec/libxvid_rc.c
	libavcodec/utils.c
	libavcodec/version.h
	libavfilter/avfilter.c
	libavfilter/avfilter.h
	libavfilter/buffersink.h
	tests/Makefile
	tests/fate/aac.mak
	tests/fate/audio.mak
	tests/fate/demux.mak
	tests/fate/ea.mak
	tests/fate/image.mak
	tests/fate/libavutil.mak
	tests/fate/lossless-audio.mak
	tests/fate/lossless-video.mak
	tests/fate/microsoft.mak
	tests/fate/qt.mak
	tests/fate/real.mak
	tests/fate/screen.mak
	tests/fate/video.mak
	tests/fate/voice.mak
	tests/fate/vqf.mak
	tests/ref/fate/ea-mad
	tests/ref/fate/ea-tqi

Merged-by: Michael Niedermayer <michaelni@gmx.at>
2012-05-10 02:25:41 +02:00
Sean McGovern 779222dbfe configure: Add _XOPEN_SOURCE=600 to Solaris preprocessor flags.
This is needed to expose some networking APIs.

Signed-off-by: Diego Biurrun <diego@biurrun.de>
2012-05-10 00:01:44 +02:00
Anton Khirnov ac71230902 lavfi: add video buffer sink, and use it in avtools
Also add the public interface libavfilter/buffersink.h.

Based on a commit by Stefano Sabatini.
2012-05-09 08:59:37 +02:00
Luca Barbato 5699884c2e sctp: Initial tcp-alike sctp support with streams
Signed-off-by: Jordi Ortiz <nenjordi@gmail.com>
Signed-off-by: Luca Barbato <lu_zero@gentoo.org>
2012-05-08 16:06:49 -07:00
Michael Niedermayer 715c8a5a50 Merge remote-tracking branch 'qatar/master'
* qatar/master: (28 commits)
  dfa: use more meaningful return codes
  eatgv: check vector_bits
  eatgv: check motion vectors
  Mark a number of variables only used in av_dlog() calls as av_unused.
  dvdec: drop const qualifier from variable to eliminate a warning
  avcodec: Improve comment for thread_safe_callbacks to avoid misinterpretation.
  tests/utils: don't ignore the return value of fwrite()
  lavfi/formats: use sizeof(var) instead of sizeof(type).
  lavfi: remove avfilter_default_config_input_link() declaration
  lavfi: always enable the scale filter and depend on sws.
  vf_split: support user-specifiable number of outputs.
  avconv: remove stray useless comment.
  mpegmux: add stuffing to avoid incomplete PCM frames
  rtsp: avoid const warnings from strtol() call
  avserver: check return value of ftruncate()
  lagarith: make offset array type unsigned
  dfa: add some checks to ensure that decoder won't write past frame end
  aacps: NEON optimisations
  aacps: align some arrays
  aacps: move some loops to function pointers
  ...

Conflicts:
	configure
	doc/filters.texi
	libavcodec/dfa.c
	libavcodec/eatgv.c
	libavfilter/Makefile
	libavfilter/allfilters.c
	libavfilter/avfilter.h
	libavfilter/formats.c
	libavfilter/vf_split.c

Merged-by: Michael Niedermayer <michaelni@gmx.at>
2012-05-06 21:53:19 +02:00
Anton Khirnov 25b3babe11 lavfi: always enable the scale filter and depend on sws.
The scale filter is used for internal colorspace conversions, so it must
always be present.
2012-05-06 16:22:29 +02:00
Michael Niedermayer bce42e95d1 Merge remote-tracking branch 'qatar/master'
* qatar/master:
  configure: add POWER[5-7] support
  arm: intreadwrite: revert 16-bit load asm to old version for gcc < 4.6
  vqavideo: return error if image size is not a multiple of block size
  cosmetics: indentation
  avformat: only fill-in interpolated timestamps if duration is non-zero
  avformat: remove a workaround for broken timestamps

Conflicts:
	libavformat/utils.c

Merged-by: Michael Niedermayer <michaelni@gmx.at>
2012-05-05 00:54:28 +02:00
Sean McGovern 313f9fbfbb configure: add POWER[5-7] support
Also merge POWER3 and POWER4 configuration together with the additions.

Signed-off-by: Mans Rullgard <mans@mansr.com>
2012-05-04 13:54:03 +01:00
Michael Niedermayer 27744fe439 Merge remote-tracking branch 'qatar/master'
* qatar/master:
  mpeg12: fixed parsing in some mpeg2 streams
  Add SMPTE240M transfer characteristics flag.
  mpegts: Some additional HDMV types and reg descriptors for mpegts
  motionpixels: Clip YUV values after applying a gradient.
  jpeg: handle progressive in second field of interlaced.
  ituh263dec: Implement enough of Annex O (scalability) to fix a FPE.
  h263: more strictly forbid frame size changes with frame-mt.
  h264: additional protection against unsupported size/bitdepth changes.
  tta: prevents overflows for 32bit integers in header.
  configure: remove malloc_aligned.
  vp8: update frame size changes on thread context switches.
  snowdsp: explicitily state instruction size.
  wmall: fix reconstructing audio with uncoded channels
  WMAL cosmetics: fix indentation
  gitignore: add Win32 library suffixes

Conflicts:
	configure
	libavcodec/h263dec.c
	libavcodec/h264.c
	libavcodec/ituh263dec.c
	libavcodec/mjpegdec.c
	libavcodec/wmalosslessdec.c
	libavcodec/x86/snowdsp_mmx.c
	libavformat/mpegts.c

Merged-by: Michael Niedermayer <michaelni@gmx.at>
2012-05-03 21:02:32 +02:00
Ronald S. Bultje 77cfb2563c configure: remove malloc_aligned.
It was to signal that allocations are 16-byte aligned, but AVX requires
32-byte alignment, thus the check is no longer useful (and causes
crashes).
2012-05-02 09:57:12 -07:00
Michael Niedermayer e890b68962 Merge remote-tracking branch 'qatar/master'
* qatar/master:
  dsputil: fix invalid array indexing
  configure: add libavresample to rpath
  build: icc: silence some warnings
  fft-test: add option to set cpuflag mask
  cpu: recognise only cpu flag names pertinent to the architecture
  avutil: add av_parse_cpu_flags() function
  vp8: armv6: fix non-armv6t2 build
  vp8: armv6 optimisations
  vp8: arm: separate ARMv6 functions from NEON
  ARM: add some compatibility macros
  mov: support eac3 audio
  avf: fix faulty check in has_duration

Conflicts:
	configure
	doc/APIchanges
	ffmpeg.c
	libavcodec/arm/Makefile
	libavcodec/arm/asm.S
	libavcodec/arm/vp8dsp_armv6.S
	libavcodec/arm/vp8dsp_init_arm.c
	libavutil/avutil.h

Merged-by: Michael Niedermayer <michaelni@gmx.at>
2012-04-26 22:24:58 +02:00
Sean McGovern 3510a13307 configure: add libavresample to rpath
Signed-off-by: Mans Rullgard <mans@mansr.com>
2012-04-26 11:25:23 +01:00
Mans Rullgard 88de5b0a73 build: icc: silence some warnings
This disables the warning "external declaration in primary source file"
which is issued when a prototype for an extern function is found in a
.c file rather than a header file.  We have such prototypes for asm
functions where a separate header file would be pointless.

Signed-off-by: Mans Rullgard <mans@mansr.com>
2012-04-25 23:19:40 +01:00
Michael Niedermayer 3ead79eaa3 Merge remote-tracking branch 'qatar/master'
* qatar/master:
  FATE: use updated reference for aac-latm_stereo_to_51
  avconv: use libavresample
  Add libavresample
  FATE: avoid channel mixing in lavf-dv_fmt

Conflicts:
	Changelog
	Makefile
	cmdutils.c
	configure
	doc/APIchanges
	ffmpeg.c
	tests/lavf-regression.sh
	tests/ref/lavf/dv_fmt
	tests/ref/seek/lavf_dv

Merged-by: Michael Niedermayer <michaelni@gmx.at>
2012-04-25 23:17:41 +02:00
Justin Ruggles c8af852b97 Add libavresample
This is a new library for audio sample format, channel layout, and sample rate
conversion.
2012-04-24 21:28:27 -04:00
Michael Niedermayer 3bbf3f7e42 Merge remote-tracking branch 'qatar/master'
* qatar/master:
  matroska: Clear prev_pkt between seeks.
  avutil: change default buffer size alignment for sample buffer functions
  audemux: Add a sanity check for the number of channels
  Remove libdirac decoder.
  matroska: Add incremental parsing of clusters.
  avconv: fix off by one check in complex_filter
  mpegts: Try seeking back even for nonseekable protocols
  swscale: K&R formatting cosmetics (part III)

Conflicts:
	configure
	doc/general.texi
	doc/platform.texi
	ffmpeg.c
	libavcodec/Makefile
	libavcodec/allcodecs.c
	libavcodec/libdirac.h
	libavcodec/libdiracdec.c
	libavformat/au.c
	libavformat/mpegts.c
	libswscale/input.c
	tests/ref/seek/lavf_mkv

Merged-by: Michael Niedermayer <michaelni@gmx.at>
2012-04-24 02:30:41 +02:00
Diego Biurrun a229d6c285 Remove libdirac decoder.
libschroedinger is the preferred way to decode Dirac video.
2012-04-23 09:20:24 +02:00
Michael Niedermayer 2a976debc1 Merge remote-tracking branch 'qatar/master'
* qatar/master:
  dv: Initialize encoder tables during encoder init.
  dv: Replace some magic numbers by the appropriate #define.
  FATE: pass the decoded output format and audio source file to enc_dec_pcm
  FATE: specify the input format when decoding in enc_dec_pcm()
  x86inc: support AVX abstraction for 2-operand instructions
  configure: detect PGI compiler and set suitable flags
  avconv: check for an incompatible changing channel layout
  avio: make AVIOContext.av_class pointer to const
  nutdec: add malloc check and fix const to non-const conversion warnings

Conflicts:
	ffmpeg.c

Merged-by: Michael Niedermayer <michaelni@gmx.at>
2012-04-19 21:23:52 +02:00
Michael Niedermayer 2ff935f4bb build system: remove -wcast-qual
Generating warnings when casting const away leads to tight constraints
on the code if one wants to avoid warnings. This is especially true for
generic code that is supposed to work with both const and non const.
These tight constrains cause people to waste time trying to find a
way to write code so it doesnt generate any warning, while people
should rather spend their time thinking on how to write fast,
clean, maintainable and bug free code.
Removing this class of warnings fixes this issue.

Approved-by: Nicolas George <nicolas.george@normalesup.org>
Approved-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
2012-04-19 20:01:33 +02:00
Mans Rullgard e73ec9216b configure: detect PGI compiler and set suitable flags
Signed-off-by: Mans Rullgard <mans@mansr.com>
2012-04-19 02:02:49 +01:00
Michael Niedermayer 74e4bb6912 Merge remote-tracking branch 'hexene/stagefright'
* hexene/stagefright:
  libstagefright: avoid memory leak
  libstagefright: support more output pixel formats
  libstagefright: avoid potential deadlock on output MediaBuffer
  libstagefright: explicitly set positive timestamps as stagefright expects them so
  Merge branches 'stagefright' and 'stagefright-test' into stagefright-test

Merged-by: Michael Niedermayer <michaelni@gmx.at>
2012-04-19 01:58:30 +02:00
Mohamed Naufal 7b915a4045 libstagefright: explicitly set positive timestamps as stagefright expects them so 2012-04-19 00:02:53 +05:30
Nicolas George b7027685b8 configure: add dependencies for colormatrix test. 2012-04-15 14:21:14 +02:00
Michael Niedermayer 367d9b2957 Merge remote-tracking branch 'qatar/master'
* qatar/master:
  swscale: K&R formatting cosmetics (part II)
  tiffdec: Add a malloc check and refactor another.
  faxcompr: Check malloc results and unify return path
  configure: escape colons in values written to config.fate
  ac3dsp: call femms/emms at the end of float_to_fixed24() for 3DNow and SSE
  matroska: Fix leaking memory allocated for laces.
  pthread: Fix crash due to fctx->delaying not being cleared.
  vp3: Assert on invalid filter_limit values.
  h264: fix 10bit biweight functions after recent x86inc.asm fixes.
  ffv1: Fix size mismatch in encode_line.
  movenc: Remove a dead initialization
  git-howto: Explain how to avoid Windows line endings in git checkouts.
  build: Move all arch OBJS declarations into arch subdirectory Makefiles.

Conflicts:
	configure
	libavcodec/vp3.c
	libavformat/matroskadec.c
	libavutil/Makefile
	libswscale/Makefile
	libswscale/swscale.c
	libswscale/swscale_internal.h
	libswscale/utils.c

Merged-by: Michael Niedermayer <michaelni@gmx.at>
2012-04-13 21:50:37 +02:00
Mans Rullgard 6555acad10 configure: escape colons in values written to config.fate
The fields in config.fate are colon-separated so any colons
within the fields should be escaped to prevent confusion.

Signed-off-by: Mans Rullgard <mans@mansr.com>
2012-04-13 13:22:37 +01:00
Stefano Sabatini b7a7830dd4 lavfi: port 2xsai filter from libmpcodecs
Partially based on the port by Niel van der Westhuizen
<nielkie@gmail.com>, done for GCI 2010. Same output as the original
filter and as fast.

See thread:
Subject: [FFmpeg-devel] [PATCH] Port MPlayer 2xSaI filter to libavfilter
Date: Thu, 25 Nov 2010 01:31:24 +1000
2012-04-13 00:14:06 +02:00
Nicolas George 40b7a27bad vf_drawtext: fontconfig support. 2012-04-10 15:16:47 +02:00
Michael Niedermayer 352a67e6f8 configure: fix - vs _ error
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
2012-04-08 09:43:38 +02:00
Michael Niedermayer 6101e5322f Merge remote-tracking branch 'qatar/master'
* qatar/master:
  rtpdec_asf: Set the no_resync_search option for the chained asf demuxer
  asfdec: Add an option for not searching for the packet markers
  cosmetics: Clean up the tiffenc pix_fmts declaration to match the style of others
  cosmetics: Align codec declarations
  cosmetics: Convert mimic.c to utf-8
  avconv: remove an unused function parameter.
  avconv: remove now pointless variables.
  avconv: drop support for building without libavfilter.
  nellymoserenc: fix crash due to memsetting the wrong area.
  libavformat: Only require first packet to be known for audio/video streams
  avplay: Don't try to scale timestamps if the tb isn't set

Conflicts:
	Changelog
	configure
	ffmpeg.c
	libavcodec/aacenc.c
	libavcodec/bmpenc.c
	libavcodec/dnxhddec.c
	libavcodec/dnxhdenc.c
	libavcodec/ffv1.c
	libavcodec/flacenc.c
	libavcodec/fraps.c
	libavcodec/huffyuv.c
	libavcodec/libopenjpegdec.c
	libavcodec/mpeg12enc.c
	libavcodec/mpeg4videodec.c
	libavcodec/pamenc.c
	libavcodec/pgssubdec.c
	libavcodec/pngenc.c
	libavcodec/qtrleenc.c
	libavcodec/rawdec.c
	libavcodec/sgienc.c
	libavcodec/tiffenc.c
	libavcodec/v210dec.c
	libavcodec/wmv2dec.c
	libavformat/utils.c

Merged-by: Michael Niedermayer <michaelni@gmx.at>
2012-04-07 22:41:37 +02:00
Stefano Sabatini 2f83681c79 lavfi: port libmpcodecs remove-logo filter
The code is based on the remove-logo filter in MPlayer/libmpcodecs, by
Robert Edele, relicensed to LGPL with consent of the author.

Address trac issue #249.
2012-04-07 13:57:39 +02:00
Michael Niedermayer fe5b7db07a build system: support setting avassert() assert_level
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
2012-04-07 09:23:06 +02:00
Anton Khirnov e06d2dfcde avconv: drop support for building without libavfilter.
Since the mandatory memcpy in vsrc_buffer has been eliminated, there
shouldn't be any significant reason to build without lavfi anymore.

This will make upcoming support for complex filtergraphs easier to do.
2012-04-06 20:21:07 +02:00