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51 lines
1.9 KiB
51 lines
1.9 KiB
/* |
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* Bluetooth low-complexity, subband codec (SBC) |
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* |
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* Copyright (C) 2017 Aurelien Jacobs <aurel@gnuage.org> |
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* Copyright (C) 2008-2010 Nokia Corporation |
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* Copyright (C) 2004-2010 Marcel Holtmann <marcel@holtmann.org> |
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* Copyright (C) 2004-2005 Henryk Ploetz <henryk@ploetzli.ch> |
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* Copyright (C) 2005-2006 Brad Midgley <bmidgley@xmission.com> |
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* |
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* This file is part of FFmpeg. |
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* |
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* FFmpeg 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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* FFmpeg 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 FFmpeg; 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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/** |
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* @file |
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* SBC MMX optimization for some basic "building bricks" |
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*/ |
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#include "libavutil/cpu.h" |
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#include "libavutil/x86/cpu.h" |
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#include "libavcodec/sbcdsp.h" |
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void ff_sbc_analyze_4_mmx(const int16_t *in, int32_t *out, const int16_t *consts); |
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void ff_sbc_analyze_8_mmx(const int16_t *in, int32_t *out, const int16_t *consts); |
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void ff_sbc_calc_scalefactors_mmx(int32_t sb_sample_f[16][2][8], |
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uint32_t scale_factor[2][8], |
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int blocks, int channels, int subbands); |
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av_cold void ff_sbcdsp_init_x86(SBCDSPContext *s) |
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{ |
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int cpu_flags = av_get_cpu_flags(); |
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if (EXTERNAL_MMX(cpu_flags)) { |
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s->sbc_analyze_4 = ff_sbc_analyze_4_mmx; |
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s->sbc_analyze_8 = ff_sbc_analyze_8_mmx; |
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s->sbc_calc_scalefactors = ff_sbc_calc_scalefactors_mmx; |
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} |
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}
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