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Frank Barchard cf101116c9 Remove initialize to zero on output variables for inline. 
Inline that uses temporary variables is currently initializing them
to 0 and passing in as output "+r".
This CL replaces the output constraint to "=&r" for most meaning an
output with early write (before inputs).  This allows the initialize
to zero step to be removed, saving 1 instruction.

BUG=libyuv:580
TESTED=local libyuv build on gcc/linux and try bots
R=harryjin@google.com

Review URL: https://codereview.chromium.org/1895743008 .
2016-04-18 16:24:26 -07:00
build_overrides Empty overrides file for GN on Mac 2016-04-07 14:39:30 -07:00
chromium Enable building with Native Client. 2016-04-12 06:40:04 +02:00
docs Empty overrides file for GN on Mac 2016-04-07 14:39:30 -07:00
include Remove initialize to zero on output variables for inline. 2016-04-18 16:24:26 -07:00
source Remove initialize to zero on output variables for inline. 2016-04-18 16:24:26 -07:00
third_party/gflags pull gflags.gyp changes from webrtc 2016-01-14 11:09:28 -08:00
tools Add new OWNERS and remove drover.properties. 2016-02-16 19:53:11 +01:00
unit_test rename MIPS_DSPR2 to DSPR2 for consistency 2016-02-05 14:49:54 -08:00
util rename MIPS_DSPR2 to DSPR2 for consistency 2016-02-05 14:49:54 -08:00
.gitignore Enable building with Native Client. 2016-04-12 06:40:04 +02:00
.gn Add //build/config/BUILD.gn to exec whitelist for GN. 2016-04-06 11:23:28 -07:00
all.gyp Android support 2013-11-21 19:57:10 +00:00
Android.mk Adds files and functions for rotate any, but does not hook them up to the caller. 2015-07-27 10:32:08 -07:00
AUTHORS Adding AUTHORS file to libyuv 2011-11-01 20:44:21 +00:00
BUILD.gn Add //build/config/BUILD.gn to exec whitelist for GN. 2016-04-06 11:23:28 -07:00
CMakeLists.txt cmake move libyuv_unittest target into the if(TEST) condition 2016-04-01 16:15:34 -07:00
codereview.settings Change code review host to Chromium's Rietveld. 2015-09-06 06:49:01 +02:00
DEPS Roll chromium_revision 8cdf0347.. 1d144ca7 2016-04-13 15:26:36 -07:00
download_vs_toolchain.py Roll chromium_revision 260824:262938 + fix binutils. Since it's not possible to have platform-specific hooks executing, binutils must be downloaded for all platforms in order for the download.py hook to execute properly on non-unix platforms. 2014-04-11 23:40:41 +00:00
gyp_libyuv Skip running GYP if GYP_CHROMIUM_NO_ACTION is set in environment 2016-04-08 14:01:29 +02:00
gyp_libyuv.py Minor fixes to gyp_libyuv.py 2014-03-28 19:38:05 +00:00
libyuv_nacl.gyp NaCl/GYP: remove references to prep_toolchain from libyuv. prep_toolchain is now a no-op. 2015-04-22 17:42:21 +00:00
libyuv_test.gyp disable assembly in header for msan=1 2016-03-15 18:45:38 -07:00
libyuv.gyp disable unused argument warning for clang builds. 2016-04-11 11:43:08 -07:00
libyuv.gypi merge neon source files back into single libyuv library 2015-10-07 21:16:51 -07:00
LICENSE Update Copyright notice to follow new chromium conventions. 2012-08-08 19:04:24 +00:00
LICENSE_THIRD_PARTY README.chromium license field for WebView and LICENSE_THIRD_PARTY to show files with special licenses. 2013-04-24 00:12:28 +00:00
linux.mk Adds files and functions for rotate any, but does not hook them up to the caller. 2015-07-27 10:32:08 -07:00
OWNERS Add new OWNERS and remove drover.properties. 2016-02-16 19:53:11 +01:00
PATENTS LibYuv: Adding PATENT and LICENSE files 2011-10-25 16:15:49 +00:00
PRESUBMIT.py PRESUBMIT: Add GN bots to default trybots 2016-04-11 22:07:55 +02:00
public.mk Android.mk moved into libyuv to central support 2012-09-19 07:27:17 +00:00
README.chromium Remove initialize to zero on output variables for inline. 2016-04-18 16:24:26 -07:00
README.md Docs: Fix broken links from README.md 2016-03-15 17:38:14 -07:00
setup_links.py Enable building with Native Client. 2016-04-12 06:40:04 +02:00
sync_chromium.py Enable building with Native Client. 2016-04-12 06:40:04 +02:00
winarm.mk Adds files and functions for rotate any, but does not hook them up to the caller. 2015-07-27 10:32:08 -07:00

README.md

libyuv is an open source project that includes YUV scaling and conversion functionality.

  • Scale YUV to prepare content for compression, with point, bilinear or box filter.
  • Convert to YUV from webcam formats.
  • Convert from YUV to formats for rendering/effects.
  • Rotate by 90/180/270 degrees to adjust for mobile devices in portrait mode.
  • Optimized for SSE2/SSSE3/AVX2 on x86/x64.
  • Optimized for Neon on Arm.
  • Optimized for DSP R2 on Mips.

Development

See [Getting started] 1 for instructions on how to get started developing.

You can also browse the [docs directory] 2 for more documentation.