mirror of
https://github.com/FFmpeg/FFmpeg.git
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Michael Niedermayer
205172946b
Lets a filter run the row and column passes over ranges of lines, as slice threading needs. Assisted-by: Claude
77 lines
2.9 KiB
C
77 lines
2.9 KiB
C
/*
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* Copyright (c) 2007 Michael Niedermayer <michaelni@gmx.at>
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* Copyright (c) 2013 Clément Bœsch <u pkh me>
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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 AVFILTER_WAVELET97_H
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#define AVFILTER_WAVELET97_H
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/**
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* Undecimated 9/7 wavelet transform
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*/
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/**
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* Analysis lowpass and highpass filters, both symmetric around tap 0
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*/
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extern const double ff_wavelet97_coeff[2][5];
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/**
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* Undecimated analysis of lines line0..line1-1 along one direction.
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* Line y, sample x is at src[y * ylinesize + x * xlinesize], x < w, w >= 2.
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*
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* @param dst_l lowpass output, same layout as src
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* @param dst_h highpass output, same layout as src
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* @param coeff lowpass and highpass filters, normally ff_wavelet97_coeff
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* @param step dilation of the filters, 1 << level
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*/
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void ff_wavelet97_decompose_lines(float *dst_l, float *dst_h, const float *src,
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const double coeff[2][5],
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int xlinesize, int ylinesize,
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int step, int w, int line0, int line1);
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/**
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* Inverse of ff_wavelet97_decompose_lines() with ff_wavelet97_coeff.
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*/
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void ff_wavelet97_compose_lines(float *dst, const float *src_l, const float *src_h,
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int xlinesize, int ylinesize,
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int step, int w, int line0, int line1);
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/**
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* One level of undecimated 2D analysis, filters are mirrored at the plane borders.
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*
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* @param dst output bands LL, LH, HL, HH (horizontal/vertical filter)
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* @param src input plane
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* @param temp two scratch planes
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* @param coeff lowpass and highpass filters, normally ff_wavelet97_coeff
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* @param linesize distance between lines in floats, same for all planes
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* @param step dilation of the filters, 1 << level
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*/
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void ff_wavelet97_decompose(float *dst[4], const float *src, float *temp[2],
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const double coeff[2][5],
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int linesize, int step, int w, int h);
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/**
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* One level of 2D synthesis, the inverse of ff_wavelet97_decompose() with
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* ff_wavelet97_coeff.
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*/
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void ff_wavelet97_compose(float *dst, float *const src[4], float *temp[2],
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int linesize, int step, int w, int h);
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#endif /* AVFILTER_WAVELET97_H */
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