Michael Niedermayer
981f04b2ae
avcodec/scpr: optimize shift loop.
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Speeds code up from 50sec to 15sec
Fixes Timeout
Fixes: 3242/clusterfuzz-testcase-5811951672229888
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Reviewed-by: James Almer <jamrial@gmail.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
2017-09-10 19:08:23 +02:00
Derek Buitenhuis
f7daed8545
scpr: Added missing error check
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Signed-off-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>
2017-07-07 15:25:46 -04:00
Michael Niedermayer
5666b95c9f
avcodec/scpr: mask bits to prevent out of array read
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Fixes: 1615/clusterfuzz-testcase-minimized-6625214647500800
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/targets/ffmpeg
Reviewed-by: Paul B Mahol <onemda@gmail.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
2017-05-16 23:14:28 +02:00
Michael Niedermayer
2171dfae8c
avcodec/scpr: Fix multiple runtime error: index 256 out of bounds for type 'unsigned int [256]'
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Fixes: 1519/clusterfuzz-testcase-minimized-5286680976162816
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/targets/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
2017-05-13 15:54:33 +02:00
Michael Niedermayer
7ac5067146
avcodec/scpr: Check y in first line loop in decompress_i()
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Fixes: out of array access
Fixes: 1478/clusterfuzz-testcase-minimized-5285486908145664
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/targets/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
2017-05-11 15:51:08 +02:00
Michael Niedermayer
f1a4dd5e48
avcodec/scpr: Fix multiple runtime error: signed integer overflow: 2147483647 + 1 cannot be represented in type 'int'
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Fixes: 1422/clusterfuzz-testcase-minimized-5030993939398656
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/targets/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
2017-05-09 19:46:17 +02:00
Paul B Mahol
807d5dcde9
avcodec/scpr: use correct linesize for prev frame
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Signed-off-by: Paul B Mahol <onemda@gmail.com>
2017-03-12 12:34:55 +01:00
Paul B Mahol
6d93e7d1a3
avcodec/scpr: fix top left prediction for special case when x is 0 for keyframes
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Signed-off-by: Paul B Mahol <onemda@gmail.com>
2017-03-03 12:28:24 +01:00
Paul B Mahol
86ab6b6e08
avcodec/scpr: check if total_freq is 0 in decode0
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Fixes SIGFPE, closes #6196 .
Signed-off-by: Paul B Mahol <onemda@gmail.com>
2017-02-27 13:55:15 +01:00
Paul B Mahol
6d856b2579
avcodec/scpr: add support for older version
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Signed-off-by: Paul B Mahol <onemda@gmail.com>
2017-02-26 22:09:54 +01:00
Paul B Mahol
e01c32f260
avcodec/scpr: remove 4 dead store
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Signed-off-by: Paul B Mahol <onemda@gmail.com>
2017-02-24 19:49:39 +01:00
Paul B Mahol
0a28c50506
avcodec/scpr: improve motion vectors checking for out of buffer write
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Signed-off-by: Paul B Mahol <onemda@gmail.com>
2017-02-24 15:27:19 +01:00
Paul B Mahol
178cd50c47
avcodec/scpr: make sure that component value is <= 0x1F for 16 bpc
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Signed-off-by: Paul B Mahol <onemda@gmail.com>
2017-02-24 12:02:48 +01:00
Paul B Mahol
45ed942e7e
avcodec/scpr: improve check for out of range motion vectors
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Signed-off-by: Paul B Mahol <onemda@gmail.com>
2017-02-23 19:45:12 +01:00
Paul B Mahol
95a5af446b
avcodec/scpr: check that current row is in valid range
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Stops writing out of dst array.
Signed-off-by: Paul B Mahol <onemda@gmail.com>
2017-02-23 18:46:24 +01:00
Paul B Mahol
fd7af82c53
avcodec/scpr: do not allow out of array access for 16bit case
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Signed-off-by: Paul B Mahol <onemda@gmail.com>
2017-02-23 17:22:01 +01:00
Paul B Mahol
039011b6b0
avcodec: add ScreenPressor decoder
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Signed-off-by: Paul B Mahol <onemda@gmail.com>
2017-02-22 22:57:59 +01:00
