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Diffstat (limited to 'libavresample/x86/util.asm')
| -rw-r--r-- | libavresample/x86/util.asm | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/libavresample/x86/util.asm b/libavresample/x86/util.asm new file mode 100644 index 0000000000..501f662d43 --- /dev/null +++ b/libavresample/x86/util.asm @@ -0,0 +1,34 @@ +;****************************************************************************** +;* x86 utility macros for libavresample +;* Copyright (c) 2012 Justin Ruggles <justin.ruggles@gmail.com> +;* +;* This file is part of Libav. +;* +;* Libav is free software; you can redistribute it and/or +;* modify it under the terms of the GNU Lesser General Public +;* License as published by the Free Software Foundation; either +;* version 2.1 of the License, or (at your option) any later version. +;* +;* Libav is distributed in the hope that it will be useful, +;* but WITHOUT ANY WARRANTY; without even the implied warranty of +;* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +;* Lesser General Public License for more details. +;* +;* You should have received a copy of the GNU Lesser General Public +;* License along with Libav; if not, write to the Free Software +;* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA +;****************************************************************************** + +%macro S16_TO_S32_SX 2 ; src/low dst, high dst +%if cpuflag(sse4) + pmovsxwd m%2, m%1 + psrldq m%1, 8 + pmovsxwd m%1, m%1 + SWAP %1, %2 +%else + punpckhwd m%2, m%1 + punpcklwd m%1, m%1 + psrad m%2, 16 + psrad m%1, 16 +%endif +%endmacro |