45 lines
1.8 KiB
C
45 lines
1.8 KiB
C
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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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#include "libavutil/attributes.h"
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#include "libavutil/x86/cpu.h"
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#include "libavcodec/alacdsp.h"
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#include "config.h"
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void ff_alac_decorrelate_stereo_sse4(int32_t *buffer[2], int nb_samples,
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int decorr_shift, int decorr_left_weight);
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void ff_alac_append_extra_bits_stereo_sse2(int32_t *buffer[2], int32_t *extra_bits_buffer[2],
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int extra_bits, int channels, int nb_samples);
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void ff_alac_append_extra_bits_mono_sse2(int32_t *buffer[2], int32_t *extra_bits_buffer[2],
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int extra_bits, int channels, int nb_samples);
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av_cold void ff_alacdsp_init_x86(ALACDSPContext *c)
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{
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#if HAVE_X86ASM
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int cpu_flags = av_get_cpu_flags();
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if (EXTERNAL_SSE2(cpu_flags)) {
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c->append_extra_bits[0] = ff_alac_append_extra_bits_mono_sse2;
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c->append_extra_bits[1] = ff_alac_append_extra_bits_stereo_sse2;
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}
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if (EXTERNAL_SSE4(cpu_flags)) {
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c->decorrelate_stereo = ff_alac_decorrelate_stereo_sse4;
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}
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#endif /* HAVE_X86ASM */
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}
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