2 * Copyright (c) 2012-2014 Christophe Gisquet <christophe.gisquet@gmail.com>
4 * This file is part of FFmpeg.
6 * FFmpeg is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
11 * FFmpeg is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with FFmpeg; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21 #include "libavutil/attributes.h"
22 #include "libavutil/cpu.h"
23 #include "libavutil/x86/cpu.h"
24 #include "libavcodec/synth_filter.h"
26 #define SYNTH_FILTER_FUNC(opt) \
27 void ff_synth_filter_inner_##opt(float *synth_buf_ptr, float synth_buf2[32], \
28 const float window[512], \
29 float out[32], intptr_t offset, float scale); \
30 static void synth_filter_##opt(FFTContext *imdct, \
31 float *synth_buf_ptr, int *synth_buf_offset, \
32 float synth_buf2[32], const float window[512], \
33 float out[32], const float in[32], float scale) \
35 float *synth_buf= synth_buf_ptr + *synth_buf_offset; \
37 imdct->imdct_half(imdct, synth_buf, in); \
39 ff_synth_filter_inner_##opt(synth_buf, synth_buf2, window, \
40 out, *synth_buf_offset, scale); \
42 *synth_buf_offset = (*synth_buf_offset - 32) & 511; \
47 SYNTH_FILTER_FUNC(sse)
49 SYNTH_FILTER_FUNC(sse2)
50 SYNTH_FILTER_FUNC(avx)
51 SYNTH_FILTER_FUNC(fma3)
52 #endif /* HAVE_YASM */
54 av_cold void ff_synth_filter_init_x86(SynthFilterContext *s)
57 int cpu_flags = av_get_cpu_flags();
60 if (EXTERNAL_SSE(cpu_flags)) {
61 s->synth_filter_float = synth_filter_sse;
64 if (EXTERNAL_SSE2(cpu_flags)) {
65 s->synth_filter_float = synth_filter_sse2;
67 if (EXTERNAL_AVX_FAST(cpu_flags)) {
68 s->synth_filter_float = synth_filter_avx;
70 if (EXTERNAL_FMA3_FAST(cpu_flags)) {
71 s->synth_filter_float = synth_filter_fma3;
73 #endif /* HAVE_YASM */