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https://github.com/FFmpeg/FFmpeg.git
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50 lines
1.7 KiB
C
50 lines
1.7 KiB
C
/*
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* Format Conversion Utils
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* Copyright (c) 2000, 2001 Fabrice Bellard
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* Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
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*
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* MMX optimization by Nick Kurshev <nickols_k@mail.ru>
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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/attributes.h"
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#include "libavutil/cpu.h"
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#include "libavutil/x86/cpu.h"
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#include "libavcodec/fmtconvert.h"
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#if HAVE_X86ASM
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void ff_int32_to_float_fmul_scalar_sse (float *dst, const int32_t *src, float mul, int len);
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void ff_int32_to_float_fmul_scalar_sse2(float *dst, const int32_t *src, float mul, int len);
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#endif /* HAVE_X86ASM */
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av_cold void ff_fmt_convert_init_x86(FmtConvertContext *c, AVCodecContext *avctx)
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{
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#if HAVE_X86ASM
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int cpu_flags = av_get_cpu_flags();
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if (EXTERNAL_SSE(cpu_flags)) {
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c->int32_to_float_fmul_scalar = ff_int32_to_float_fmul_scalar_sse;
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}
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if (EXTERNAL_SSE2(cpu_flags)) {
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c->int32_to_float_fmul_scalar = ff_int32_to_float_fmul_scalar_sse2;
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}
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#endif /* HAVE_X86ASM */
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}
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