James Almer
fa469545ba
avcodec: move leb reading functions to its own header
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Signed-off-by: James Almer <jamrial@gmail.com>
11 months ago
James Almer
0cc0d8c0b5
avcodec/get_bits: add get_leb()
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Signed-off-by: James Almer <jamrial@gmail.com>
1 year ago
Paul B Mahol
29b9fca4b3
avcodec: add multi vlc reader
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Heavily based and inspired by Christophe's cache branches.
Co-Authored-by: Christophe Gisquet
1 year ago
Anton Khirnov
0b33310cd0
lavc/bitstream: avoid UB in bits_{read,peek}_signed(0)
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bits_*_signed(0) will currently invoke an undefined shift by
8 * sizeof(int).
Add bits_*_signed_nz() that only works for n>0, analogous to
bits_read_nz(). Add an explicit check for n=0 in bits_*_signed().
Found-by: James Almer
2 years ago
Anton Khirnov
9177970bca
lavc/bitstream: templatize for BE/LE
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Allows using both BE and LE bitstream readers in the same file.
2 years ago
Alexandra Hájková
8fe551eca0
lavc: add standalone cached bitstream reader
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The cached bitstream reader was originally written by Alexandra Hájková
for Libav, with significant input from Kostya Shishkov and Luca Barbato.
It was then committed to FFmpeg in ca079b0954
, by merging it with the
implementation of the current bitstream reader.
This merge makes the code of get_bits.h significantly harder to read,
since it now contains two different bitstream readers interleaved with
#ifdefs. Additionally, the code was committed without proper authorship
attribution.
This commit re-adds the cached bitstream reader as a standalone header,
as it was originally developed. It will be made useful in following
commits.
Integration by Anton Khirnov.
Signed-off-by: Anton Khirnov <anton@khirnov.net>
2 years ago
Luca Barbato
79f64f7ebc
bitstream: Avoid undefined behavior in bitstream_skip()
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Do not use skip_remaining() to fully wipe the cache, as this could do
a 64-bit shift of a 64-bit variable which is undefined behavior in C.
Instead set the related variables to zero directly.
Thanks to Uoti for pointing out the problem.
CC: libav-stable@libav.org
8 years ago
Luca Barbato
0ac1fec1c3
bitstream: Move VLC reading functions into the vlc.h header
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This makes the bitstream.h header leaner.
Signed-off-by: Diego Biurrun <diego@biurrun.de>
8 years ago
Luca Barbato
9c2d36fcaf
dv: Convert to the new bitstream reader
8 years ago
Alexandra Hájková
dd3d7ddf2a
lavc: add a new bitstream reader to replace get_bits
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The new bit reader features a simpler API and an implementation without
stacks of nested macros.
Signed-off-by: Anton Khirnov <anton@khirnov.net>
8 years ago
Stefano Sabatini
9106a698e7
Rename bitstream.h to get_bits.h.
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Originally committed as revision 18494 to svn://svn.ffmpeg.org/ffmpeg/trunk
16 years ago
Stefano Sabatini
b275500706
Split bitstream.h, put the bitstream writer stuff in the new file
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put_bits.h.
Originally committed as revision 18461 to svn://svn.ffmpeg.org/ffmpeg/trunk
16 years ago
Stefano Sabatini
4af615b81e
Document the 'size' parameter of set_put_bits_buffer_size().
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Originally committed as revision 18448 to svn://svn.ffmpeg.org/ffmpeg/trunk
16 years ago
Stefano Sabatini
930cab5944
Document ff_put_string().
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Originally committed as revision 18447 to svn://svn.ffmpeg.org/ffmpeg/trunk
16 years ago
Stefano Sabatini
54b02ccda2
Rename the 'put_zero' parameter of ff_put_string() to
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'terminate_string'.
Originally committed as revision 18442 to svn://svn.ffmpeg.org/ffmpeg/trunk
16 years ago
Stefano Sabatini
980f54513e
Add documentation for skip_put_bytes().
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Originally committed as revision 18441 to svn://svn.ffmpeg.org/ffmpeg/trunk
16 years ago
Stefano Sabatini
093364da30
Doxygenate ff_copy_bits().
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Originally committed as revision 18440 to svn://svn.ffmpeg.org/ffmpeg/trunk
16 years ago
Stefano Sabatini
86755e82f7
Factorize declaration for the two variants of put_bits().
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Originally committed as revision 18439 to svn://svn.ffmpeg.org/ffmpeg/trunk
16 years ago
Stefano Sabatini
0a73e94fd6
Clarify documentation for put_bits_count().
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Originally committed as revision 18432 to svn://svn.ffmpeg.org/ffmpeg/trunk
16 years ago
Stefano Sabatini
facf521daa
Document align_put_bits().
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Originally committed as revision 18427 to svn://svn.ffmpeg.org/ffmpeg/trunk
16 years ago
Stefano Sabatini
fc660a0143
Doxygenate flush_put_bits() documentation.
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Originally committed as revision 18426 to svn://svn.ffmpeg.org/ffmpeg/trunk
16 years ago
Stefano Sabatini
e46ddebd14
Doxygenate put_bits_count() documentation.
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Originally committed as revision 18425 to svn://svn.ffmpeg.org/ffmpeg/trunk
16 years ago
Stefano Sabatini
f7a2aab7d8
Doxygenate init_put_bits().
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Originally committed as revision 18423 to svn://svn.ffmpeg.org/ffmpeg/trunk
16 years ago
Stefano Sabatini
f9f74ab97b
Add a notice telling that the behavior of skip_put_bits() is undefined
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if n is 0.
Originally committed as revision 18285 to svn://svn.ffmpeg.org/ffmpeg/trunk
16 years ago
Justin Ruggles
017c0811a1
Add a get_sbits_long() function.
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Originally committed as revision 17740 to svn://svn.ffmpeg.org/ffmpeg/trunk
16 years ago
Reimar Döffinger
edd532db64
Simplify show_bits_long and copy the GetBitsContext around only once instead of twice.
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Originally committed as revision 17736 to svn://svn.ffmpeg.org/ffmpeg/trunk
16 years ago
Michael Niedermayer
71a48ff23c
Add size_in_bits to PutBitContext
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Originally committed as revision 17006 to svn://svn.ffmpeg.org/ffmpeg/trunk
16 years ago
Diego Biurrun
bad5537e2c
Use full internal pathname in doxygen @file directives.
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Otherwise doxygen complains about ambiguous filenames when files exist
under the same name in different subdirectories.
Originally committed as revision 16912 to svn://svn.ffmpeg.org/ffmpeg/trunk
16 years ago
Reimar Döffinger
724cc2dfaa
Use AV_WL32/AV_WB32 in bitstream.h
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Originally committed as revision 16778 to svn://svn.ffmpeg.org/ffmpeg/trunk
16 years ago
Aurelien Jacobs
b250f9c66d
Change semantic of CONFIG_*, HAVE_* and ARCH_*.
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They are now always defined to either 0 or 1.
Originally committed as revision 16590 to svn://svn.ffmpeg.org/ffmpeg/trunk
16 years ago
Måns Rullgård
23ae2b68b0
Replace UNALIGNED_STORES_ARE_BAD with !HAVE_FAST_UNALIGNED
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Originally committed as revision 16364 to svn://svn.ffmpeg.org/ffmpeg/trunk
16 years ago
Måns Rullgård
a2fc0f6a6d
ARM: replace "armv4l" with "arm"
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Originally committed as revision 16179 to svn://svn.ffmpeg.org/ffmpeg/trunk
16 years ago
Diego Pettenò
be449fca79
Convert asm keyword into __asm__.
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Neither the asm() nor the __asm__() keyword is part of the C99
standard, but while GCC accepts the former in C89 syntax, it is not
accepted in C99 unless GNU extensions are turned on (with -fasm). The
latter form is accepted in any syntax as an extension (without
requiring further command-line options).
Sun Studio C99 compiler also does not accept asm() while accepting
__asm__(), albeit reporting warnings that it's not valid C99 syntax.
Originally committed as revision 15627 to svn://svn.ffmpeg.org/ffmpeg/trunk
16 years ago
Stefano Sabatini
987903826b
Globally rename the header inclusion guard names.
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Consistently apply this rule: the guard name is obtained from the
filename by stripping the leading "lib", converting '/' and '.' to
'_' and uppercasing the resulting name. Guard names in the root
directory have to be prefixed by "FFMPEG_".
Originally committed as revision 15120 to svn://svn.ffmpeg.org/ffmpeg/trunk
17 years ago
Stefano Sabatini
7a7c4a7bf7
Fix typo.
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Originally committed as revision 15034 to svn://svn.ffmpeg.org/ffmpeg/trunk
17 years ago
Bartlomiej Wolowiec
8580314463
Little-endian bitstream writer
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Originally committed as revision 14965 to svn://svn.ffmpeg.org/ffmpeg/trunk
17 years ago
Måns Rullgård
29c8b6263a
Remove dead code in bitstream.h
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Originally committed as revision 14238 to svn://svn.ffmpeg.org/ffmpeg/trunk
17 years ago
Ramiro Polla
6647ab80e3
bitstream: move put_sbits() from flacenc.c to bitstream.h and use it
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throughout libavcodec.
Originally committed as revision 14204 to svn://svn.ffmpeg.org/ffmpeg/trunk
17 years ago
Måns Rullgård
71c465a151
Bitstream: use AV_RB16() in LIBMPEG2_BITSTREAM_READER
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This makes LIBMPEG2_BITSTREAM_READER_HACK redundant, so remove it.
Originally committed as revision 14197 to svn://svn.ffmpeg.org/ffmpeg/trunk
17 years ago
Michael Niedermayer
d05b24ff89
Little helper macro to make the use of INIT_VLC_USE_NEW_STATIC easier.
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Originally committed as revision 13562 to svn://svn.ffmpeg.org/ffmpeg/trunk
17 years ago
Michael Niedermayer
ccc54864fe
Make init_vlc* support proper static tables instead of this broken beyond
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imagination alloc_static() trash.
Originally committed as revision 13561 to svn://svn.ffmpeg.org/ffmpeg/trunk
17 years ago
Diego Biurrun
245976da2a
Use full path for #includes from another directory.
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Originally committed as revision 13098 to svn://svn.ffmpeg.org/ffmpeg/trunk
17 years ago
Michael Niedermayer
1701cbfafc
const
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Originally committed as revision 11846 to svn://svn.ffmpeg.org/ffmpeg/trunk
17 years ago
Kostya Shishkov
b44665c4e6
Make decode210() common function.
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Originally committed as revision 11382 to svn://svn.ffmpeg.org/ffmpeg/trunk
17 years ago
Diego Biurrun
5b21bdabe4
Add FFMPEG_ prefix to all multiple inclusion guards.
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Originally committed as revision 10765 to svn://svn.ffmpeg.org/ffmpeg/trunk
17 years ago
Aurelien Jacobs
28296f9c9e
move get_unary() to its own file
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Originally committed as revision 10240 to svn://svn.ffmpeg.org/ffmpeg/trunk
18 years ago
Roman Shaposhnik
67c1b32f3d
* getting rid of code duplication
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Originally committed as revision 9997 to svn://svn.ffmpeg.org/ffmpeg/trunk
18 years ago
Alex Beregszaszi
971e878dca
copy get_unary from vc1
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Originally committed as revision 9994 to svn://svn.ffmpeg.org/ffmpeg/trunk
18 years ago
Michael Niedermayer
1ae7a85116
indent
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Originally committed as revision 9894 to svn://svn.ffmpeg.org/ffmpeg/trunk
18 years ago
Diego Biurrun
df3a80b50a
cosmetics: misc typo fixes
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Originally committed as revision 9815 to svn://svn.ffmpeg.org/ffmpeg/trunk
18 years ago