FFmpeg

Commit Graph

Author	SHA1	Message	Date
Michael Niedermayer	87ddf9f1ef	avcodec/4xm: Check index in decode_i_block() also in the path where its not used. Fixes: Infinite loop Fixes: signed integer overflow: 2147483644 + 16 cannot be represented in type 'int' Fixes: 16169/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_FOURXM_fuzzer-5662570416963584 Fixes: 16782/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_FOURXM_fuzzer-5743163859271680 Fixes: 17641/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_FOURXM_fuzzer-5711603562971136 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Reviewed-by: Paul B Mahol <onemda@gmail.com> Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>	5 years ago
Michael Niedermayer	8f92eb05e0	avcodec/4xm: Check for end of input in decode_p_block() Fixes: Timeout (81sec -> 0.2sec) Fixes: 16169/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_FOURXM_fuzzer-5662570416963584 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Reviewed-by: Paul B Mahol <onemda@gmail.com> Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>	5 years ago
Michael Niedermayer	2bbea155bf	avcodec/4xm: Fix signed integer overflows in idct() Fixes: signed integer overflow: 20242 * 121095 cannot be represented in type 'int' Fixes: 15310/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_FOURXM_fuzzer-5737051745419264 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>	5 years ago
Michael Niedermayer	55557c6124	avcodec/4xm: Fix vlc memleak Fixes: memleak Fixes: 15297/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_FOURXM_fuzzer-5746203548975104 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>	5 years ago
Michael Niedermayer	07607a1db8	avcodec/4xm: Fix returned error codes Reviewed-by: Paul B Mahol <onemda@gmail.com> Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>	6 years ago
Ramiro Polla	4d34205bec	avcodec/4xm: fix block alignment blockdsp requires 32 byte alignment. Signed-off-by: James Almer <jamrial@gmail.com>	6 years ago
Luca Barbato	73fc82f343	vlc: Add header #include when the types are used Do not rely on indirectly including it from bitstream.h. Signed-off-by: Diego Biurrun <diego@biurrun.de>	8 years ago
Diego Biurrun	dcc39ee10e	lavc: Remove deprecated XvMC support hacks Deprecated in 11/2013.	8 years ago
Diego Biurrun	a25dac976a	Use bitstream_init8() where appropriate	8 years ago
Alexandra Hájková	ed006ae4e2	4xm: Convert to the new bitstream reader Signed-off-by: Anton Khirnov <anton@khirnov.net>	8 years ago
Andreas Cadhalpun	1e660fe88d	doc: fix spelling errors Reviewed-by: Lou Logan <lou@lrcd.com> Signed-off-by: Andreas Cadhalpun <Andreas.Cadhalpun@googlemail.com>	8 years ago
Vittorio Giovara	059a934806	lavc: Consistently prefix input buffer defines Signed-off-by: Vittorio Giovara <vittorio.giovara@gmail.com>	9 years ago
Vittorio Giovara	def97856de	lavc: AV-prefix all codec capabilities Express bitfields more simply. Signed-off-by: Vittorio Giovara <vittorio.giovara@gmail.com>	9 years ago
Vittorio Giovara	7c6eb0a1b7	lavc: AV-prefix all codec flags Convert doxygen to multiline and express bitfields more simply. Signed-off-by: Vittorio Giovara <vittorio.giovara@gmail.com>	9 years ago
Michael Niedermayer	4001fc4267	avcodec/4xm: remove duplicate assert Found-by: carl Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	10 years ago
Vittorio Giovara	68a35473ed	4xm: more thorought check for negative index and negative shift CC: libav-stable@libav.org Bug-Id: CID 1087094	10 years ago
Vittorio Giovara	0e1ebfebc8	4xm: drop unnecessary check data_size is always >= 0 in this case. CC: libav-stable@libav.org Bug-Id: CID 1238788	10 years ago
Michael Niedermayer	544380aaf0	avcodec/4xm: Make src of decode_p_block() const Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	10 years ago
Diego Biurrun	c67b449beb	dsputil: Split bswap*_buf() off into a separate context	11 years ago
Diego Biurrun	e74433a8e6	dsputil: Split clear_block/fill_block off into a separate context	11 years ago
Diego Biurrun	cc8163e1a3	avcodec: more correct printf specifiers	11 years ago
Anton Khirnov	fe80fa53bc	4xm: replace forcing EMU_EDGE by a copy The decoder currently sets CODEC_FLAG_EMU_EDGE and relies on get_buffer2() to always provide buffers with linesize == 2 * width. This is wrong, since we place no such restriction on get_buffer2() implementations. Fix this by decoding into internal buffers and copying them to output frames. Since this is a very obscure decoder, the performance hit should not be an issue.	11 years ago
Anton Khirnov	fffca3d278	4xm: return a proper error code.	11 years ago
Paul B Mahol	2820562935	avcodec/4xm: use av_fast_padded_malloc() Signed-off-by: Paul B Mahol <onemda@gmail.com>	11 years ago
Diego Biurrun	b2bed9325d	cosmetics: Group .name and .long_name together in codec/format declarations	11 years ago
Luca Barbato	2f034f255c	4xm: Reject not a multiple of 16 dimension Reported-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind CC: libav-stable@libav.org	11 years ago
Michael Niedermayer	68efb1d60a	4xm: Dont ignore dc run errors Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	12 years ago
Michael Niedermayer	13c56e9a9c	4xm: check for invalid zero ac coeffs Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	12 years ago
Luca Barbato	59d7bb99b6	4xm: check bitstream_size boundary before using it Prevent buffer overread. Reported-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind CC: libav-stable@libav.org	12 years ago
Luca Barbato	fbd0dacc8d	4xm: refactor decode_p_block Directly return from code 1, 2 and 6 codepaths and simplify the remaining one to have a single overflow check and a single call to mcdc.	12 years ago
Luca Barbato	94aefb1932	4xm: do not overread the source buffer in decode_p_block Check for out of picture macroblocks before calling mcdc. Reported-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind CC: libav-stable@libav.org	12 years ago
Luca Barbato	be373cb50d	4xm: do not overread the prestream buffer Reported-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind CC: libav-stable@libav.org	12 years ago
Luca Barbato	de2e5777e2	4xm: validate the buffer size before parsing it Reported-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind CC: libav-stable@libav.org	12 years ago
Luca Barbato	145023f572	4xm: reject frames not compatible with the declared version Reported-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind CC: libav-stable@libav.org	12 years ago
Luca Barbato	1f0c607560	4xm: drop pointless assert Make sure the value of wlog2 is always between 0 and 3.	12 years ago
Luca Barbato	b8b809908e	4xm: forward errors from decode_p_block Partially mitigate out of memory writes. Reported-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind CC: libav-stable@libav.org	12 years ago
Luca Barbato	50ec1db62d	4xm: fold last_picture lazy allocation in decode_p_frame	12 years ago
Luca Barbato	e7a44f87d0	4xm: refactor fourxm_read_header Split sound and video tag parsing in separate functions.	12 years ago
Luca Barbato	08859d19b4	4xm: use the correct logging context	12 years ago
Diego Biurrun	2832ea26f3	Remove commented-out debug #define cruft	12 years ago
Clément Bœsch	1ec94b0f06	lavc: factorize ff_{thread_,re,}get_buffer error messages. Coccinelle profile used: @@ expression r, ctx, f, loglevel, str, flags; @@ -if ((r = ff_get_buffer(ctx, f, flags)) < 0) { - av_log(ctx, loglevel, str); - return r; -} +if ((r = ff_get_buffer(ctx, f, flags)) < 0) + return r; @@ expression r, ctx, f, loglevel, str; @@ -if ((r = ff_reget_buffer(ctx, f)) < 0) { - av_log(ctx, loglevel, str); - return r; -} +if ((r = ff_reget_buffer(ctx, f)) < 0) + return r; @@ expression r, ctx, f, loglevel, str, flags; @@ -if ((r = ff_thread_get_buffer(ctx, f, flags)) < 0) { - av_log(ctx, loglevel, str); - return r; -} +if ((r = ff_thread_get_buffer(ctx, f, flags)) < 0) + return r; ...along with some manual patches for the remaining ones.	12 years ago
Anton Khirnov	759001c534	lavc decoders: work with refcounted frames.	12 years ago
Anton Khirnov	8097fc9a2d	4xm: check the return value of read_huffman_tables(). CC:libav-stable@libav.org	12 years ago
Michael Niedermayer	cfc7b9cfff	4xm: remove avcodec_get_frame_defaults() calls They are not needed anymore Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	12 years ago
Michael Niedermayer	d73b65ed0e	4xm: add assert to check that the pointer from read_huffman_tables is within the array Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	12 years ago
Michael Niedermayer	53a3fdbfc5	4xm: Check available space in read_huffman_tables() Fixes integer overflow and out of array accesses Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	12 years ago
Diego Biurrun	88bd7fdc82	Drop DCTELEM typedef It does not help as an abstraction and adds dsputil dependencies. Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>	12 years ago
Anton Khirnov	aa15afb7ce	4xm: simplify code with FFSWAP	12 years ago
Anton Khirnov	10c26e928a	4xm: return meaningful error codes	12 years ago
Anton Khirnov	f7d15d2f42	4xm: operate with pointers to AVFrames instead of whole structs. This is more correct and avoids breaking extended_data.	12 years ago

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207 Commits (ea980d4162cf783c3ed9978c6e12b9908f5b039b)