Michael Niedermayer 2ce3997846 avcodec/scpr: Use av_memcpy_backptr() in type 17 and 33 ...

This makes the changed code-path faster.

Change not tested except with the fuzzer testcase as I found no other testcase.

Improves: Timeout (136sec -> 74sec)
Improves: 16040/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_SCPR_fuzzer-5705876062601216

Reviewed-by: Paul B Mahol <onemda@gmail.com>
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
(cherry picked from commit 950a21e83c)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

2019-11-11 20:18:47 +01:00

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