| /* |
| * Copyright (C) 2004 Michael Niedermayer <michaelni@gmx.at> |
| * Copyright (C) 2006 Robert Edele <yartrebo@earthlink.net> |
| * |
| * This file is part of FFmpeg. |
| * |
| * FFmpeg 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. |
| * |
| * FFmpeg 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 FFmpeg; 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 */ |