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https://github.com/FFmpeg/FFmpeg.git
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705f5e5e15
~25% faster dts decoding overall. The checkasm CPU cycles numbers are
not that useful since synth_filter_float() calls FFTContext.imdct_half().
cortex-a57 cortex-a53
synth_filter_float_c: 1866.2 3490.9
synth_filter_float_neon: 915.0 1531.5
With fftc.imdct_half forced to imdct_half_neon:
cortex-a57 cortex-a53
synth_filter_float_c: 1718.4 3025.3
synth_filter_float_neon: 926.2 1530.1
40 lines
1.5 KiB
C
40 lines
1.5 KiB
C
/*
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* copyright (c) 2008 Michael Niedermayer <michaelni@gmx.at>
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*
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* This file is part of Libav.
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*
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* Libav 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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* Libav 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 Libav; 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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#ifndef AVCODEC_SYNTH_FILTER_H
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#define AVCODEC_SYNTH_FILTER_H
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#include "fft.h"
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typedef struct SynthFilterContext {
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void (*synth_filter_float)(FFTContext *imdct,
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float *synth_buf_ptr, int *synth_buf_offset,
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float synth_buf2[32], const float window[512],
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float out[32], const float in[32],
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float scale);
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} SynthFilterContext;
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void ff_synth_filter_init(SynthFilterContext *c);
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void ff_synth_filter_init_aarch64(SynthFilterContext *c);
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void ff_synth_filter_init_arm(SynthFilterContext *c);
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void ff_synth_filter_init_x86(SynthFilterContext *c);
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#endif /* AVCODEC_SYNTH_FILTER_H */
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