2 * Format Conversion Utils
3 * Copyright (c) 2000, 2001 Fabrice Bellard
4 * Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
6 * MMX optimization by Nick Kurshev <nickols_k@mail.ru>
8 * This file is part of FFmpeg.
10 * FFmpeg is free software; you can redistribute it and/or
11 * modify it under the terms of the GNU Lesser General Public
12 * License as published by the Free Software Foundation; either
13 * version 2.1 of the License, or (at your option) any later version.
15 * FFmpeg is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 * Lesser General Public License for more details.
20 * You should have received a copy of the GNU Lesser General Public
21 * License along with FFmpeg; if not, write to the Free Software
22 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
25 #include "libavutil/attributes.h"
26 #include "libavutil/cpu.h"
27 #include "libavutil/x86/asm.h"
28 #include "libavutil/x86/cpu.h"
29 #include "libavcodec/fmtconvert.h"
33 void ff_int32_to_float_fmul_scalar_sse (float *dst, const int32_t *src, float mul, int len);
34 void ff_int32_to_float_fmul_scalar_sse2(float *dst, const int32_t *src, float mul, int len);
35 void ff_int32_to_float_fmul_array8_sse (FmtConvertContext *c, float *dst, const int32_t *src,
36 const float *mul, int len);
37 void ff_int32_to_float_fmul_array8_sse2(FmtConvertContext *c, float *dst, const int32_t *src,
38 const float *mul, int len);
40 #endif /* HAVE_YASM */
42 av_cold void ff_fmt_convert_init_x86(FmtConvertContext *c, AVCodecContext *avctx)
45 int cpu_flags = av_get_cpu_flags();
47 if (EXTERNAL_SSE(cpu_flags)) {
48 c->int32_to_float_fmul_scalar = ff_int32_to_float_fmul_scalar_sse;
49 c->int32_to_float_fmul_array8 = ff_int32_to_float_fmul_array8_sse;
51 if (EXTERNAL_SSE2(cpu_flags)) {
52 c->int32_to_float_fmul_scalar = ff_int32_to_float_fmul_scalar_sse2;
53 c->int32_to_float_fmul_array8 = ff_int32_to_float_fmul_array8_sse2;
55 #endif /* HAVE_YASM */