/* * Copyright (C) 2004 Michael Niedermayer <michaelni@gmx.at> * Copyright (C) 2006 Robert Edele <yartrebo@earthlink.net> * * This file is part of Libav. * * Libav is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * Libav is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with Libav; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #ifndef AVCODEC_SNOW_H #define AVCODEC_SNOW_H #include "dsputil.h" #include "dwt.h" #define MID_STATE 128 #define MAX_PLANES 4 #define QSHIFT 5 #define QROOT (1<<QSHIFT) #define LOSSLESS_QLOG -128 #define FRAC_BITS 4 #define MAX_REF_FRAMES 8 #define LOG2_OBMC_MAX 8 #define OBMC_MAX (1<<(LOG2_OBMC_MAX)) /* C bits used by mmx/sse2/altivec */ static av_always_inline void snow_interleave_line_header(int * i, int width, IDWTELEM * low, IDWTELEM * high){ (*i) = (width) - 2; if (width & 1){ low[(*i)+1] = low[((*i)+1)>>1]; (*i)--; } } static av_always_inline void snow_interleave_line_footer(int * i, IDWTELEM * low, IDWTELEM * high){ for (; (*i)>=0; (*i)-=2){ low[(*i)+1] = high[(*i)>>1]; low[*i] = low[(*i)>>1]; } } static av_always_inline void snow_horizontal_compose_lift_lead_out(int i, IDWTELEM * dst, IDWTELEM * src, IDWTELEM * ref, int width, int w, int lift_high, int mul, int add, int shift){ for(; i<w; i++){ dst[i] = src[i] - ((mul * (ref[i] + ref[i + 1]) + add) >> shift); } if((width^lift_high)&1){ dst[w] = src[w] - ((mul * 2 * ref[w] + add) >> shift); } } static av_always_inline void snow_horizontal_compose_liftS_lead_out(int i, IDWTELEM * dst, IDWTELEM * src, IDWTELEM * ref, int width, int w){ for(; i<w; i++){ dst[i] = src[i] + ((ref[i] + ref[(i+1)]+W_BO + 4 * src[i]) >> W_BS); } if(width&1){ dst[w] = src[w] + ((2 * ref[w] + W_BO + 4 * src[w]) >> W_BS); } } #endif /* AVCODEC_SNOW_H */