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https://chromium.googlesource.com/libyuv/libyuv
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5790a765b9
I422ToUYVYRow_AVX2 optimized from 7 cycles per 32 pixels to 4.6 cycles. Instead of 2 vpermq and vpunpcklbw: vmovdqu (%1),%%xmm2 vmovdqu 0x00(%1,%2,1),%%xmm3 vpermq $0xd8,%%ymm2,%%ymm2 vpermq $0xd8,%%ymm3,%%ymm3 vpunpcklbw %%ymm3,%%ymm2,%%ymm2 ..use vpmovzxbd to expand the bytes to shorts, then vpslld and vpor vpmovzxbd (%1),%%ymm2 vpmovzxbd 0x00(%1,%2,1),%%ymm3 vpslld $0x10,%%ymm3,%%ymm3 vpor %%ymm3,%%ymm2,%%ymm2 which reduces the port 5 bottleneck by 1 cycle. Bug: libyuv:556 Test: out/Release/libyuv_unittest --gtest_filter=*I42?To*UY*Opt Change-Id: I53799e53cc6b090a1a695c839094c193be3eecaf Reviewed-on: https://chromium-review.googlesource.com/899873 Commit-Queue: Frank Barchard <fbarchard@chromium.org> Reviewed-by: richard winterton <rrwinterton@gmail.com> Reviewed-by: Cheng Wang <wangcheng@google.com>
9 lines
203 B
Plaintext
9 lines
203 B
Plaintext
Name: libyuv
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URL: http://code.google.com/p/libyuv/
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Version: 1696
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License: BSD
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License File: LICENSE
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Description:
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libyuv is an open source project that includes YUV conversion and scaling functionality.
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