diff options
Diffstat (limited to 'libavcodec/x86/sbcdsp_init.c')
-rw-r--r-- | libavcodec/x86/sbcdsp_init.c | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/libavcodec/x86/sbcdsp_init.c b/libavcodec/x86/sbcdsp_init.c new file mode 100644 index 0000000..86effec --- /dev/null +++ b/libavcodec/x86/sbcdsp_init.c @@ -0,0 +1,51 @@ +/* + * Bluetooth low-complexity, subband codec (SBC) + * + * Copyright (C) 2017 Aurelien Jacobs <aurel@gnuage.org> + * Copyright (C) 2008-2010 Nokia Corporation + * Copyright (C) 2004-2010 Marcel Holtmann <marcel@holtmann.org> + * Copyright (C) 2004-2005 Henryk Ploetz <henryk@ploetzli.ch> + * Copyright (C) 2005-2006 Brad Midgley <bmidgley@xmission.com> + * + * This file is part of FFmpeg. + * + * FFmpeg is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * FFmpeg is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with FFmpeg; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +/** + * @file + * SBC MMX optimization for some basic "building bricks" + */ + +#include "libavutil/cpu.h" +#include "libavutil/x86/cpu.h" +#include "libavcodec/sbcdsp.h" + +void ff_sbc_analyze_4_mmx(const int16_t *in, int32_t *out, const int16_t *consts); +void ff_sbc_analyze_8_mmx(const int16_t *in, int32_t *out, const int16_t *consts); +void ff_sbc_calc_scalefactors_mmx(int32_t sb_sample_f[16][2][8], + uint32_t scale_factor[2][8], + int blocks, int channels, int subbands); + +av_cold void ff_sbcdsp_init_x86(SBCDSPContext *s) +{ + int cpu_flags = av_get_cpu_flags(); + + if (EXTERNAL_MMX(cpu_flags)) { + s->sbc_analyze_4 = ff_sbc_analyze_4_mmx; + s->sbc_analyze_8 = ff_sbc_analyze_8_mmx; + s->sbc_calc_scalefactors = ff_sbc_calc_scalefactors_mmx; + } +} |