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authorAndreas Rheinhardt <andreas.rheinhardt@gmail.com>2020-09-22 10:12:15 +0200
committerAndreas Rheinhardt <andreas.rheinhardt@gmail.com>2020-09-26 21:10:45 +0200
commita162e78cd5f6cf3d8fc30169fc7df482905df01b (patch)
tree8cf64d2fbbcd9ef1d9577ede5fa4df04e16d05d9 /libavcodec/huffyuv.h
parentbc6838deb99ecd649ed483ed1ce657c70830b0af (diff)
downloadffmpeg-a162e78cd5f6cf3d8fc30169fc7df482905df01b.tar.gz
avcodec/fraps: Use cached bitstream reader
This proved beneficial for performance: For the sample [1] the number of decicycles in one decode call decreased from 155851561 to 108158037 for Clang 10 and from 168270467 to 128847479 for GCC 9.3. For x86-32 compiled with GCC 9.3 and run on an x64 Haswell the number increased from 158405517 to 202215769, so that the cached bitstream reader is only enabled if HAVE_FAST_64BIT is set. These values are the average of 10 runs each looping five times over the input. [1]: samples.ffmpeg.org/ffmpeg-bugs/trac/ticket2593/fraps_flv1_decoding_errors.avi Reviewed-by: Paul B Mahol <onemda@gmail.com> Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
Diffstat (limited to 'libavcodec/huffyuv.h')
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