Michael Niedermayer
b53ed19aa7
lcldec: Check length before unsigned subtraction.
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Fix integer overflow and out of array read
Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
12 years ago
Anton Khirnov
14cf33e957
lcldec: return meaningful error codes.
12 years ago
Michael Niedermayer
169dfe320d
lcldec: fix zlib const pointer warning
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Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
12 years ago
Anton Khirnov
df9b956751
lavc: fix decode_frame() third parameter semantics for video decoders
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It's got_frame, not data size
12 years ago
Anton Khirnov
594d4d5df3
lavc: add a wrapper for AVCodecContext.get_buffer().
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It will be useful in the upcoming transition to refcounted AVFrames.
12 years ago
Paul B Mahol
1b3dbe3f75
lcldec: fix decoding of uncompressed rgb24 sample
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Sample from ticket #1216 does not use any compression but bitstream
claims it is. Reference decoder decodes sample just fine.
Fixes #1216 .
Signed-off-by: Paul B Mahol <onemda@gmail.com>
12 years ago
Diego Biurrun
5bac2d0c30
avutil: Move memcpy_backptr() to mem.c
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The function is used elsewhere and does not belong with the LZO code.
12 years ago
Diego Biurrun
e831b3b852
av_memcpy_backptr: Drop no longer necessary malloc padding
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Signed-off-by: Mans Rullgard <mans@mansr.com>
12 years ago
Anton Khirnov
716d413c13
Replace PIX_FMT_* -> AV_PIX_FMT_*, PixelFormat -> AVPixelFormat
12 years ago
Anton Khirnov
36ef5369ee
Replace all CODEC_ID_* with AV_CODEC_ID_*
12 years ago
Martin Storsjö
00c3b67b8a
cosmetics: Align codec declarations
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Also break some long lines, remove codec function placeholder comments
and add spaces in sample/pixel format lists.
Signed-off-by: Martin Storsjö <martin@martin.st>
13 years ago
Ronald S. Bultje
bd17a40a7e
lcl: return negative error codes on decode_init() errors.
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Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
CC: libav-stable@libav.org
13 years ago
Ronald S. Bultje
be129271ea
lcl: error out if uncompressed input buffer is smaller than framesize.
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This prevents crashes when trying to read beyond the end of the buffer
while decoding frame data.
Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
CC: libav-stable@libav.org
13 years ago
Ronald S. Bultje
01cb62aba2
lcl: don't overwrite input memory.
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If the PNG filter is enabled, a PNG-style filter will run over the
input buffer, writing into the buffer. Therefore, if no zlib compression
was used, ensure that we copy into a temporary buffer, otherwise we
overwrite user-provided input data.
13 years ago
Reimar Döffinger
42a1f1d7a8
Avoid uninitialized data in lcldec when ofs is 0 in MSZH.
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Signed-off-by: Reimar Döffinger <Reimar.Doeffinger@gmx.de>
13 years ago
Anton Khirnov
ec6402b7c5
lavc: use designated initialisers for all codecs.
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It's more readable and less prone to breakage.
13 years ago
Diego Biurrun
adbfc605f6
doxygen: Consistently use '@' instead of '\' for Doxygen markup.
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Signed-off-by: Diego Biurrun <diego@biurrun.de>
14 years ago
Stefano Sabatini
01042d4123
lavc: set defaults in internal codec frames
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This is required specifically for setting frame->format to -1,
otherwise it will be set to 0 = PIX_FMT_YUV420P and code reading
the format from the output decoded frame will get misled.
In particular fix regressions occurring with the pending vsrc_buffer
patch.
14 years ago
Mans Rullgard
2912e87a6c
Replace FFmpeg with Libav in licence headers
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Signed-off-by: Mans Rullgard <mans@mansr.com>
14 years ago
Diego Elio Pettenò
e7e2df27f8
Add ff_ prefix to data symbols of encoders, decoders, hwaccel, parsers, bsf.
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None of these symbols should be accessed directly, so declare them as
hidden.
Signed-off-by: Mans Rullgard <mans@mansr.com>
(cherry picked from commit d36beb3f69
)
14 years ago
Diego Elio Pettenò
d36beb3f69
Add ff_ prefix to data symbols of encoders, decoders, hwaccel, parsers, bsf.
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None of these symbols should be accessed directly, so declare them as
hidden.
Signed-off-by: Mans Rullgard <mans@mansr.com>
14 years ago
Diego Biurrun
b34aaed2cf
Move #ifdef before zlib_decomp() up so it covers the Doxygen comments.
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Otherwise Doxygen gets confused and cannot map comments to functions.
Originally committed as revision 23988 to svn://svn.ffmpeg.org/ffmpeg/trunk
15 years ago
Diego Biurrun
ba87f0801d
Remove explicit filename from Doxygen @file commands.
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Passing an explicit filename to this command is only necessary if the
documentation in the @file block refers to a file different from the
one the block resides in.
Originally committed as revision 22921 to svn://svn.ffmpeg.org/ffmpeg/trunk
15 years ago
Stefano Sabatini
72415b2adb
Define AVMediaType enum, and use it instead of enum CodecType, which
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is deprecated and will be dropped at the next major bump.
Originally committed as revision 22735 to svn://svn.ffmpeg.org/ffmpeg/trunk
15 years ago
Reimar Döffinger
4a49ab77c6
Remove unnecessary calls to avcodec_check_dimensions, the check is already
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done at a higher level.
Originally committed as revision 20229 to svn://svn.ffmpeg.org/ffmpeg/trunk
15 years ago
Reimar Döffinger
24dd21fa41
add #if CONFIG_ZLIB_DECODER around zlib_decomp function.
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Fixes compilation when zlib is not available.
Originally committed as revision 19069 to svn://svn.ffmpeg.org/ffmpeg/trunk
16 years ago
Reimar Döffinger
79183d3c3e
mszh decompression: add a special case for an all-0 mask, i.e. 32 uncompressed
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bytes in a row.
About 15% faster mszh_decomp on an Atom N270 for
http://samples.mplayerhq.hu/V-codecs/mszh-zlib/avimzsh_sample.avi
Originally committed as revision 19068 to svn://svn.ffmpeg.org/ffmpeg/trunk
16 years ago
Reimar Döffinger
a7bfbe4e13
lcldec: ensure that the offset for av_memcpy_backptr is valid.
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Originally committed as revision 19067 to svn://svn.ffmpeg.org/ffmpeg/trunk
16 years ago
Reimar Döffinger
bbf306742c
Fix memleak due to c->decomp_buf never being freed.
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Originally committed as revision 19064 to svn://svn.ffmpeg.org/ffmpeg/trunk
16 years ago
Reimar Döffinger
908425c758
Only call inflateEnd when we were actually using the zlib code.
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Originally committed as revision 19063 to svn://svn.ffmpeg.org/ffmpeg/trunk
16 years ago
Reimar Döffinger
4ad3df9da2
avctx->priv_data is initialized to 0, get rid of useless extra initialization.
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Originally committed as revision 19062 to svn://svn.ffmpeg.org/ffmpeg/trunk
16 years ago
Reimar Döffinger
7ffc844742
Merge variable declaration and initialization.
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Originally committed as revision 19061 to svn://svn.ffmpeg.org/ffmpeg/trunk
16 years ago
Reimar Döffinger
7c20421661
Use int-size types instead of char where it makes no difference.
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Originally committed as revision 19060 to svn://svn.ffmpeg.org/ffmpeg/trunk
16 years ago
Reimar Döffinger
7a15b25827
Take advantage of available input padding to optimize mszh_decomp
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Originally committed as revision 19059 to svn://svn.ffmpeg.org/ffmpeg/trunk
16 years ago
Reimar Döffinger
a5d2745d8e
Change maskbit variable to contain (1 << maskbit)
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Originally committed as revision 19058 to svn://svn.ffmpeg.org/ffmpeg/trunk
16 years ago
Reimar Döffinger
e0b3af9059
Remove check that thanks to padding is no longer necessary.
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Originally committed as revision 19057 to svn://svn.ffmpeg.org/ffmpeg/trunk
16 years ago
Reimar Döffinger
0b99764459
100l, the compression field in lcl extradata must be interpreted as
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int8_t, not uint8_t to allow -1 for "no compression".
The original code worked, but only when char was signed.
Originally committed as revision 19056 to svn://svn.ffmpeg.org/ffmpeg/trunk
16 years ago
Reimar Döffinger
e4f141ad60
One more use for FFMIN.
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Originally committed as revision 19055 to svn://svn.ffmpeg.org/ffmpeg/trunk
16 years ago
Reimar Döffinger
0d48e6ec7f
Pad the decompression buffer and use av_memcpy_backptr for the mszh decompression.
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Originally committed as revision 19054 to svn://svn.ffmpeg.org/ffmpeg/trunk
16 years ago
Reimar Döffinger
974ce78544
Mark srcptr as const in mszh_decomp
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Originally committed as revision 19053 to svn://svn.ffmpeg.org/ffmpeg/trunk
16 years ago
Reimar Döffinger
6065dcea37
Remove unnecessary put_bits/get_bits includes.
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Originally committed as revision 19052 to svn://svn.ffmpeg.org/ffmpeg/trunk
16 years ago
Reimar Döffinger
2bee59083d
Use bytestream_get_le16 to simplify offset/count calculation for mszh decompression.
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Originally committed as revision 19051 to svn://svn.ffmpeg.org/ffmpeg/trunk
16 years ago
Reimar Döffinger
5a18221ba8
Remove useless & 0x1f
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Originally committed as revision 19050 to svn://svn.ffmpeg.org/ffmpeg/trunk
16 years ago
Reimar Döffinger
7b151a98b0
Document padding requirements of mszh_decomp srcptr buffer
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Originally committed as revision 19049 to svn://svn.ffmpeg.org/ffmpeg/trunk
16 years ago
Reimar Döffinger
5e5fe7dab5
Use srcptr_end variable to avoid having to update both srcptr and srclen.
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Originally committed as revision 19048 to svn://svn.ffmpeg.org/ffmpeg/trunk
16 years ago
Reimar Döffinger
dbc53ffc7c
Change buffer size checks to avoid the undefined overflow case.
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Originally committed as revision 19047 to svn://svn.ffmpeg.org/ffmpeg/trunk
16 years ago
Reimar Döffinger
2fddb91e94
Simply use memcpy instead of AV_RN32/AV_WN32 combination.
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Originally committed as revision 19046 to svn://svn.ffmpeg.org/ffmpeg/trunk
16 years ago
Reimar Döffinger
661cb0d4a9
Fix decoding of multithread-encoded lcl files on big-endian.
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Originally committed as revision 19045 to svn://svn.ffmpeg.org/ffmpeg/trunk
16 years ago
Reimar Döffinger
ce22c7d075
Remove another useless ()
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Originally committed as revision 19044 to svn://svn.ffmpeg.org/ffmpeg/trunk
16 years ago
Reimar Döffinger
21bf2f51d7
Correct calculation of compressed input length.
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Originally committed as revision 19043 to svn://svn.ffmpeg.org/ffmpeg/trunk
16 years ago