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Explanation on the workings and methods used by the Pyramid Vector Quantization Search function could be found in the following Work-In-Progress mail threads: http://ffmpeg.org/pipermail/ffmpeg-devel/2017-June/212146.html http://ffmpeg.org/pipermail/ffmpeg-devel/2017-June/212816.html http://ffmpeg.org/pipermail/ffmpeg-devel/2017-July/213030.html http://ffmpeg.org/pipermail/ffmpeg-devel/2017-July/213436.html Signed-off-by: Ivan Kalvachev <ikalvachev@gmail.com>
52 lines
2.0 KiB
C
52 lines
2.0 KiB
C
/*
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* Copyright (c) 2012 Andrew D'Addesio
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* Copyright (c) 2013-2014 Mozilla Corporation
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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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#ifndef AVCODEC_OPUS_PVQ_H
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#define AVCODEC_OPUS_PVQ_H
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#include "opus_celt.h"
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#define QUANT_FN(name) uint32_t (name)(struct CeltPVQ *pvq, CeltFrame *f, \
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OpusRangeCoder *rc, const int band, float *X, \
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float *Y, int N, int b, uint32_t blocks, \
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float *lowband, int duration, \
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float *lowband_out, int level, float gain, \
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float *lowband_scratch, int fill)
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struct CeltPVQ {
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DECLARE_ALIGNED(32, int, qcoeff )[256];
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DECLARE_ALIGNED(32, float, hadamard_tmp)[256];
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float (*pvq_search)(float *X, int *y, int K, int N);
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QUANT_FN(*decode_band);
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QUANT_FN(*encode_band);
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float (*band_cost)(struct CeltPVQ *pvq, CeltFrame *f, OpusRangeCoder *rc,
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int band, float *bits, float lambda);
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};
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int ff_celt_pvq_init (struct CeltPVQ **pvq);
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void ff_opus_dsp_init_x86(struct CeltPVQ *s);
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void ff_celt_pvq_uninit(struct CeltPVQ **pvq);
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#endif /* AVCODEC_OPUS_PVQ_H */
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