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https://github.com/nyanmisaka/ffmpeg-rockchip.git
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d2ae5f77c6
Performance improvements: quant_bands: with: 681 decicycles in quant_bands, 8388453 runs, 155 skips without: 1190 decicycles in quant_bands, 8388386 runs, 222 skips Around 42% for the function Twoloop coder: abs_pow34: with/without: 7.82s/8.17s Around 4% for the entire encoder Both: with/without: 7.15s/8.17s Around 12% for the entire encoder Fast coder: abs_pow34: with/without: 3.40s/3.77s Around 10% for the entire encoder Both: with/without: 3.02s/3.77s Around 20% faster for the entire encoder Signed-off-by: Rostislav Pehlivanov <atomnuker@gmail.com> Tested-by: Michael Niedermayer <michael@niedermayer.cc> Reviewed-by: James Almer <jamrial@gmail.com>
44 lines
1.5 KiB
C
44 lines
1.5 KiB
C
/*
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* AAC encoder assembly optimizations
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* Copyright (C) 2016 Rostislav Pehlivanov <atomnuker@gmail.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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#include "config.h"
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#include "libavutil/float_dsp.h"
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#include "libavutil/x86/cpu.h"
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#include "libavcodec/aacenc.h"
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void ff_abs_pow34_sse(float *out, const float *in, const int size);
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void ff_aac_quantize_bands_sse2(int *out, const float *in, const float *scaled,
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int size, int is_signed, int maxval, const float Q34,
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const float rounding);
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av_cold void ff_aac_dsp_init_x86(AACEncContext *s)
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{
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int cpu_flags = av_get_cpu_flags();
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if (EXTERNAL_SSE(cpu_flags))
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s->abs_pow34 = ff_abs_pow34_sse;
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if (EXTERNAL_SSE2(cpu_flags))
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s->quant_bands = ff_aac_quantize_bands_sse2;
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}
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