2 * AAC Spectral Band Replication decoding functions
3 * Copyright (c) 2012 Christophe Gisquet <christophe.gisquet@gmail.com>
5 * This file is part of Libav.
7 * Libav is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
12 * Libav is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with Libav; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
23 #include "libavutil/cpu.h"
24 #include "libavutil/x86/cpu.h"
25 #include "libavcodec/sbrdsp.h"
27 float ff_sbr_sum_square_sse(float (*x)[2], int n);
28 void ff_sbr_sum64x5_sse(float *z);
29 void ff_sbr_hf_g_filt_sse(float (*Y)[2], const float (*X_high)[40][2],
30 const float *g_filt, int m_max, intptr_t ixh);
31 void ff_sbr_hf_gen_sse(float (*X_high)[2], const float (*X_low)[2],
32 const float alpha0[2], const float alpha1[2],
33 float bw, int start, int end);
34 void ff_sbr_qmf_post_shuffle_sse(float W[32][2], const float *z);
36 void ff_sbrdsp_init_x86(SBRDSPContext *s)
38 int mm_flags = av_get_cpu_flags();
40 if (EXTERNAL_SSE(mm_flags)) {
41 s->sum_square = ff_sbr_sum_square_sse;
42 s->sum64x5 = ff_sbr_sum64x5_sse;
43 s->hf_g_filt = ff_sbr_hf_g_filt_sse;
44 s->hf_gen = ff_sbr_hf_gen_sse;
45 s->qmf_post_shuffle = ff_sbr_qmf_post_shuffle_sse;