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4 Commits

Author SHA1 Message Date
Michael Niedermayer
c4276a7f30 avcodec/scpr: Avoid per pixel y checks in decode_run_i 
about 1% faster

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
 2018-12-31 17:44:26 +01:00
Michael Niedermayer
20564d23fd avcodec/scpr: Factor some indexes out in decode_run_i() 
This improves the speed of decode_run_i()

After:  clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_SCPR_fuzzer-5656821117747200 in 13516 ms
Before: clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_SCPR_fuzzer-5656821117747200 in 14018 ms

Improves: 11270/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_SCPR_fuzzer-5656821117747200

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
 2018-12-31 17:44:25 +01:00
Michael Niedermayer
609e2e64f6 avcodec/scpr: Use local variables in decode_run_i() 
This improves the speed of decode_run_i()

Before: clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_SCPR_fuzzer-5656821117747200 in 17420 ms
After:  clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_SCPR_fuzzer-5656821117747200 in 14018 ms

Improves: 11270/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_SCPR_fuzzer-5656821117747200

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
 2018-12-31 17:44:23 +01:00
Paul B Mahol
a064530da8 avcodec/scpr: add version 3 support 
Signed-off-by: Paul B Mahol <onemda@gmail.com>
 2018-11-18 22:59:29 +01:00