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70 lines
2.2 KiB
70 lines
2.2 KiB
;****************************************************************************** |
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;* x86 optimized Format Conversion Utils |
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;* Copyright (c) 2008 Loren Merritt |
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;* |
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;* This file is part of Libav. |
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;* |
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;* Libav is free software; you can redistribute it and/or |
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;* modify it under the terms of the GNU Lesser General Public |
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;* License as published by the Free Software Foundation; either |
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;* version 2.1 of the License, or (at your option) any later version. |
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;* |
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;* Libav is distributed in the hope that it will be useful, |
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;* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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;* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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;* Lesser General Public License for more details. |
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;* |
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;* You should have received a copy of the GNU Lesser General Public |
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;* License along with Libav; if not, write to the Free Software |
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;* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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;****************************************************************************** |
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%include "libavutil/x86/x86util.asm" |
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SECTION_TEXT |
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;------------------------------------------------------------------------------ |
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; void ff_int32_to_float_fmul_scalar(float *dst, const int32_t *src, float mul, |
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; int len); |
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;------------------------------------------------------------------------------ |
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%macro INT32_TO_FLOAT_FMUL_SCALAR 1 |
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%if UNIX64 |
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cglobal int32_to_float_fmul_scalar, 3, 3, %1, dst, src, len |
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%else |
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cglobal int32_to_float_fmul_scalar, 4, 4, %1, dst, src, mul, len |
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%endif |
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%if WIN64 |
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SWAP 0, 2 |
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%elif ARCH_X86_32 |
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movss m0, mulm |
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%endif |
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SPLATD m0 |
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shl lenq, 2 |
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add srcq, lenq |
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add dstq, lenq |
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neg lenq |
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.loop: |
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%if cpuflag(sse2) |
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cvtdq2ps m1, [srcq+lenq ] |
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cvtdq2ps m2, [srcq+lenq+16] |
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%else |
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cvtpi2ps m1, [srcq+lenq ] |
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cvtpi2ps m3, [srcq+lenq+ 8] |
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cvtpi2ps m2, [srcq+lenq+16] |
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cvtpi2ps m4, [srcq+lenq+24] |
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movlhps m1, m3 |
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movlhps m2, m4 |
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%endif |
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mulps m1, m0 |
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mulps m2, m0 |
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mova [dstq+lenq ], m1 |
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mova [dstq+lenq+16], m2 |
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add lenq, 32 |
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jl .loop |
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REP_RET |
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%endmacro |
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INIT_XMM sse |
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INT32_TO_FLOAT_FMUL_SCALAR 5 |
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INIT_XMM sse2 |
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INT32_TO_FLOAT_FMUL_SCALAR 3
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