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107 Commits

Author SHA1 Message Date
Ronald S. Bultje
5eec5a79da jpeg: handle progressive in second field of interlaced. 
Progressive data is allocated later in decode_sof(), not allocating
that data leads to NULL dereferences.

Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
CC: libav-stable@libav.org
 2012-05-02 10:29:51 -07:00
Mans Rullgard
2bcbd98459 Remove lowres video decoding 
This feature is complex, of questionable utility, and slows down
normal decoding.

Signed-off-by: Mans Rullgard <mans@mansr.com>
 2012-04-21 18:56:19 +01:00
Diego Biurrun
a92be9b856 Replace memset(0) by zero initializations. 
Also remove one pointless zero initialization in rangecoder.c.
 2012-03-28 09:38:33 +02:00
Alex Converse
3574a85ce5 Replace computations of remaining bits with calls to get_bits_left(). 2012-03-05 11:22:11 -08:00
Diego Biurrun
1c4717be4f mjpegdec: use correct variable in av_log invocation 
libavcodec/mjpegdec.c:1463: warning: format ‘%x’ expects type ‘unsigned int’, but argument 5 has type ‘const uint8_t *’
 2012-03-01 23:11:15 +01:00
Ronald S. Bultje
ab492ca2ab mjpeg: abort decoding if packet is too large. 
Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
CC: libav-stable@libav.org
 2012-02-24 07:28:43 -08:00
Martin Storsjö
9cf0841ef3 dsputil: Add ff_ prefix to the dsputil*_init* functions 
Signed-off-by: Martin Storsjö <martin@martin.st>
 2012-02-15 22:06:34 +02:00
Martin Storsjö
e96b4a53df vlc/rl: Add ff_ prefix to the nonstatic symbols 
Signed-off-by: Martin Storsjö <martin@martin.st>
 2012-02-15 22:06:26 +02:00
Reimar Döffinger
0880503fbb mjpegdec: use av_fast_padded_malloc() 
also check for allocation failure

Signed-off-by: Justin Ruggles <justin.ruggles@gmail.com>
 2012-02-01 14:37:47 -05:00
Anton Khirnov
99ace37e68 lavc: remove disabled FF_API_MJPEG_GLOBAL_OPTS cruft. 2012-01-27 10:38:34 +01:00
Daniel Huang
8549cf073b mjpegdec: K&R formatting cosmetics 
Signed-off-by: Diego Biurrun <diego@biurrun.de>
 2012-01-08 23:33:00 +01:00
Janne Grunau
e268a352af mjpegdec: parse RSTn to prevent skipping other data in mjpeg_decode_scan 
Check explicitly if enough bits are left to prevent an infinite loop
when the bitstream buffer is not followed by zero-padding.

Based on patches by Michael Niedermayer <michaelni@gmx.at>.
 2012-01-05 18:20:35 +01:00
Alex Converse
4bf3c8f226 mov: Don't stick the QuickTime field ordering atom in extradata. 
The 'fiel' atoms can be found in H.264 tracks clobbering the extradata.
MJPEG supports non field based extradata, and this data should be
preserved when copying.
 2011-12-21 22:04:37 -08:00
Diego Biurrun
da9cea77e3 Fix a bunch of common typos. 2011-12-11 00:32:25 +01:00
Dustin Brody
9abc98737f lavc: replace references to deprecated AVCodecContext.error_recognition to use AVCodecContext.err_recognition 
Signed-off-by: Anton Khirnov <anton@khirnov.net>
 2011-10-22 14:49:55 +02:00
Anton Khirnov
145f741e11 AVOptions: rename FF_OPT_TYPE_* => AV_OPT_TYPE_* 2011-10-12 16:51:16 +02:00
Anton Khirnov
1f0c7020a1 mjpegdec: add 'extern_huff' private option. 
Deprecate CODEC_FLAG_EXTERN_HUFF
 2011-08-31 13:25:54 +02:00
Dustin Brody
a18e04bcf9 mjpeg: treat external huffman table setup failure as codec init failure if external huffman table use requested 
Signed-off-by: Anton Khirnov <anton@khirnov.net>
 2011-08-31 10:28:29 +02:00
Dustin Brody
21d7037234 mjpeg: propagate decode errors from ff_mjpeg_decode_sos and ff_mjpeg_decode_dqt 
Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>
 2011-08-11 16:02:18 -07:00
Anton Khirnov
ec6402b7c5 lavc: use designated initialisers for all codecs. 
It's more readable and less prone to breakage.
 2011-07-29 08:42:34 +02:00
Michael Niedermayer
8c0fa61a97 jpegdec: actually search for and parse RSTn 
Fixes decoding of MJPEG files produced by some UVC Logitec web cameras,
such as "Notebook Pro" and "HD C910".

References:
http://trac.videolan.org/vlc/ticket/4215
http://ffmpeg.org/trac/ffmpeg/ticket/267

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
Reviewed-by: Kostya <kostya.shishkov@gmail.com>
(cherry picked from commit 7b8ed831eb)
 2011-07-23 19:19:13 +02:00
Diego Biurrun
356be9307c Remove unused structs and tables. 2011-07-16 01:08:31 +02:00
Mans Rullgard
b27565b143 Remove statements immediately following unconditional jumps 
This removes a number of compiler warnings.

Signed-off-by: Mans Rullgard <mans@mansr.com>
 2011-07-03 03:15:53 +01:00
Mans Rullgard
050f2b3e7f mjpeg: remove pointless braces around block of code 
Signed-off-by: Mans Rullgard <mans@mansr.com>
 2011-07-03 03:15:48 +01:00
Stefano Sabatini
975a1447f7 Replace deprecated FF_*_TYPE symbols with AV_PICTURE_TYPE_*. 
Signed-off-by: Diego Biurrun <diego@biurrun.de>
 2011-05-02 12:18:44 +02:00
Michael Niedermayer
76cd98b445 mjpeg: Detect overreads in mjpeg_decode_scan() and error out. 
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
Signed-off-by: Ronald S. Bultje <rbultje@google.com>
 2011-04-26 09:29:08 +02:00
anatoly
e0e3b8b297 Add support for picture_ptr field in MJpegDecodeContext 
Signed-off-by: Anton Khirnov <anton@khirnov.net>
 2011-03-30 07:18:34 +02:00
anatoly
f16055eedf Move MJPEG's input buffer preprocessing in separate public function 
Signed-off-by: Anton Khirnov <anton@khirnov.net>
 2011-03-30 07:18:34 +02:00
anatoly
8f0bd2c07d Support reference picture defined by bitmask in MJPEG's SOS decoder 
Signed-off-by: Anton Khirnov <anton@khirnov.net>
 2011-03-30 07:18:34 +02:00
Mans Rullgard
2912e87a6c Replace FFmpeg with Libav in licence headers 
Signed-off-by: Mans Rullgard <mans@mansr.com>
 2011-03-19 13:33:20 +00:00
Carl Eugen Hoyos
2e3c56a29f Set maximum lowres value for the MJPEG decoder to 3. 
While 4 works for some samples, 3 is the correct value since 8x8
DCT is used by (m)jpeg.

Signed-off-by: Janne Grunau <janne-ffmpeg@jannau.net>
 2011-02-16 23:05:46 +01:00
Reinhard Tartler
737eb5976f Merge libavcore into libavutil 
It is pretty hopeless that other considerable projects will adopt
libavutil alone in other projects. Projects that need small footprint
are better off with more specialized libraries such as gnulib or rather
just copy the necessary parts that they need. With this in mind, nobody
is helped by having libavutil and libavcore split. In order to ease
maintenance inside and around FFmpeg and to reduce confusion where to
put common code, avcore's functionality is merged (back) to avutil.

Signed-off-by: Reinhard Tartler <siretart@tauware.de>
 2011-02-15 16:18:21 +01:00
Luca Barbato
dfd2a005eb Replace dprintf with av_dlog 
dprintf clashes with POSIX.1-2008
 2011-01-29 23:55:37 +01:00
Diego Elio Pettenò
d36beb3f69 Add ff_ prefix to data symbols of encoders, decoders, hwaccel, parsers, bsf. 
None of these symbols should be accessed directly, so declare them as
hidden.

Signed-off-by: Mans Rullgard <mans@mansr.com>
 2011-01-26 16:08:45 +00:00
Mans Rullgard
bf5f9b528b Sanitise get_bits macros, part 1 
Some of the macros in get_bits.h include a final semicolon,
some do not.  This removes these or adds do {} while(0) around
the macros as appropriate and adds semicolons where needed in
calling code.

Signed-off-by: Mans Rullgard <mans@mansr.com>
 2011-01-23 13:57:56 +00:00
Carl Eugen Hoyos
a0f593d00d Values >4 for lowres corrupt output. 
Originally committed as revision 26386 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2011-01-16 12:45:59 +00:00
Michael Niedermayer
4c3267aaad Fix memleak in mjpeg decoder. 
Originally committed as revision 25549 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2010-10-22 02:25:26 +00:00
Michael Niedermayer
a2d4dfd493 Optimize EOB check in mjpeg decode_block() by adjusting the VLC symbol. 
Originally committed as revision 25548 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2010-10-21 22:44:51 +00:00
Michael Niedermayer
e4463f21ee Simplify last coeff check in mjpeg decode_block() 
Originally committed as revision 25547 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2010-10-21 22:44:47 +00:00
Michael Niedermayer
2111a191eb Check index in mjpeg AC decode against overflowing. 
This fixes a possibly exploitable buffer overflow and it will likely also be needed for future overreading fixes.

Originally committed as revision 25546 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2010-10-21 22:44:44 +00:00
Michael Niedermayer
5675a11f92 Add a seperate VLC table for progressive jpeg so we dont have to subtract 16 in the inner loop. 
Originally committed as revision 25545 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2010-10-21 22:44:41 +00:00
Michael Niedermayer
8870b25140 Factor code&0xf out of if() in decode_block_progressive(). 
Originally committed as revision 25544 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2010-10-21 22:44:37 +00:00
Michael Niedermayer
7f4a1e8f6c Cleanup decode_block_progressive() 
Originally committed as revision 25543 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2010-10-21 22:44:34 +00:00
Michael Niedermayer
614252863d Factorize ((unsigned) code) >> 4 out of decode_block_progressive() in jpeg. 
Originally committed as revision 25542 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2010-10-21 22:44:31 +00:00
Michael Niedermayer
76c80ef569 Move if() in mjpeg decode_block() to simplify condition. 
Originally committed as revision 25541 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2010-10-21 22:44:28 +00:00
Michael Niedermayer
1932182498 Simplify build_vlc() by using init_vlc_sparse() in mjpeg. 
Originally committed as revision 25540 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2010-10-21 22:44:18 +00:00
Stefano Sabatini
e16f217ceb Use new imgutils.h API names, fix deprecation warnings. 
Originally committed as revision 25058 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2010-09-07 19:15:29 +00:00
Alex Converse
4c399dc82b Fix undefined expressions that use multiple calls to get_bits(). 
Because the order of evaluation of subexpressions is undefined, two
get_bits() calls may not be part of the same expression.

See also r24902.

Originally committed as revision 24906 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2010-08-24 16:10:25 +00:00
Stefano Sabatini
6ce9b4310c Remove use of the deprecated function avcodec_check_dimensions(), use 
av_check_image_size() instead.

Originally committed as revision 24711 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2010-08-06 09:37:04 +00:00
Måns Rullgård
8fc0162ac4 Add av_ prefix to bswap macros 
Originally committed as revision 24170 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2010-07-10 22:12:30 +00:00