mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2024-11-26 19:01:44 +02:00
79 lines
2.4 KiB
C
79 lines
2.4 KiB
C
/*
|
|
* 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 */
|