diff options
Diffstat (limited to 'libavcodec/x86/fmtconvert.asm')
| -rw-r--r-- | libavcodec/x86/fmtconvert.asm | 55 |
1 files changed, 51 insertions, 4 deletions
diff --git a/libavcodec/x86/fmtconvert.asm b/libavcodec/x86/fmtconvert.asm index 2a3e4a5f74..8f62a0a093 100644 --- a/libavcodec/x86/fmtconvert.asm +++ b/libavcodec/x86/fmtconvert.asm @@ -2,20 +2,20 @@ ;* x86 optimized Format Conversion Utils ;* Copyright (c) 2008 Loren Merritt ;* -;* This file is part of Libav. +;* This file is part of FFmpeg. ;* -;* Libav is free software; you can redistribute it and/or +;* FFmpeg 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, +;* FFmpeg 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 +;* License along with FFmpeg; if not, write to the Free Software ;* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA ;****************************************************************************** @@ -75,3 +75,50 @@ INIT_XMM sse INT32_TO_FLOAT_FMUL_SCALAR 5 INIT_XMM sse2 INT32_TO_FLOAT_FMUL_SCALAR 3 + +;------------------------------------------------------------------------------ +; void ff_int32_to_float_fmul_array8(FmtConvertContext *c, float *dst, const int32_t *src, +; const float *mul, int len); +;------------------------------------------------------------------------------ +%macro INT32_TO_FLOAT_FMUL_ARRAY8 0 +cglobal int32_to_float_fmul_array8, 5, 5, 5, c, dst, src, mul, len + shl lend, 2 + add srcq, lenq + add dstq, lenq + neg lenq +.loop: + movss m0, [mulq] + SPLATD m0 +%if cpuflag(sse2) + cvtdq2ps m1, [srcq+lenq ] + cvtdq2ps m2, [srcq+lenq+16] +%else + cvtpi2ps m1, [srcq+lenq ] + cvtpi2ps m3, [srcq+lenq+ 8] + cvtpi2ps m2, [srcq+lenq+16] + cvtpi2ps m4, [srcq+lenq+24] + movlhps m1, m3 + movlhps m2, m4 +%endif + mulps m1, m0 + mulps m2, m0 + mova [dstq+lenq ], m1 + mova [dstq+lenq+16], m2 + add mulq, 4 + add lenq, 32 + jl .loop +%if notcpuflag(sse2) + ;; cvtpi2ps switches to MMX even if the source is a memory location + ;; possible an error in documentation since every tested CPU disagrees with + ;; that. Use emms anyway since the vast majority of machines will use the + ;; SSE2 variant + emms +%endif + RET +%endmacro + +INIT_XMM sse +INT32_TO_FLOAT_FMUL_ARRAY8 +INIT_XMM sse2 +INT32_TO_FLOAT_FMUL_ARRAY8 + |