/* * 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 _SNOW_H #define _SNOW_H #include "dsputil.h" #define MID_STATE 128 #define MAX_DECOMPOSITIONS 8 #define MAX_PLANES 4 #define QSHIFT 5 #define QROOT (1<<QSHIFT) #define LOSSLESS_QLOG -128 #define FRAC_BITS 8 #define MAX_REF_FRAMES 8 #define LOG2_OBMC_MAX 8 #define OBMC_MAX (1<<(LOG2_OBMC_MAX)) #define DWT_97 0 #define DWT_53 1 #define DWT_X 2 /** Used to minimize the amount of memory used in order to optimize cache performance. **/ struct slice_buffer_s { DWTELEM * * line; ///< For use by idwt and predict_slices. DWTELEM * * data_stack; ///< Used for internal purposes. int data_stack_top; int line_count; int line_width; int data_count; DWTELEM * base_buffer; ///< Buffer that this structure is caching. }; #define liftS lift #define lift5 lift #if 1 #define W_AM 3 #define W_AO 0 #define W_AS 1 #undef liftS #define W_BM 1 #define W_BO 8 #define W_BS 4 #define W_CM 1 #define W_CO 0 #define W_CS 0 #define W_DM 3 #define W_DO 4 #define W_DS 3 #elif 0 #define W_AM 55 #define W_AO 16 #define W_AS 5 #define W_BM 3 #define W_BO 32 #define W_BS 6 #define W_CM 127 #define W_CO 64 #define W_CS 7 #define W_DM 7 #define W_DO 8 #define W_DS 4 #elif 0 #define W_AM 97 #define W_AO 32 #define W_AS 6 #define W_BM 63 #define W_BO 512 #define W_BS 10 #define W_CM 13 #define W_CO 8 #define W_CS 4 #define W_DM 15 #define W_DO 16 #define W_DS 5 #else #define W_AM 203 #define W_AO 64 #define W_AS 7 #define W_BM 217 #define W_BO 2048 #define W_BS 12 #define W_CM 113 #define W_CO 64 #define W_CS 7 #define W_DM 227 #define W_DO 128 #define W_DS 9 #endif extern void ff_snow_vertical_compose97i(DWTELEM *b0, DWTELEM *b1, DWTELEM *b2, DWTELEM *b3, DWTELEM *b4, DWTELEM *b5, int width); extern void ff_snow_horizontal_compose97i(DWTELEM *b, int width); extern void ff_snow_inner_add_yblock(uint8_t *obmc, const int obmc_stride, uint8_t * * block, int b_w, int b_h, int src_x, int src_y, int src_stride, slice_buffer * sb, int add, uint8_t * dst8); #ifdef CONFIG_SNOW_ENCODER int w53_32_c(void *v, uint8_t * pix1, uint8_t * pix2, int line_size, int h); int w97_32_c(void *v, uint8_t * pix1, uint8_t * pix2, int line_size, int h); #else static int w53_32_c(void *v, uint8_t * pix1, uint8_t * pix2, int line_size, int h) {assert (0);} static int w97_32_c(void *v, uint8_t * pix1, uint8_t * pix2, int line_size, int h) {assert (0);} #endif /* C bits used by mmx/sse2/altivec */ static always_inline void snow_interleave_line_header(int * i, int width, DWTELEM * low, DWTELEM * high){ (*i) = (width) - 2; if (width & 1){ low[(*i)+1] = low[((*i)+1)>>1]; (*i)--; } } static always_inline void snow_interleave_line_footer(int * i, DWTELEM * low, DWTELEM * high){ for (; (*i)>=0; (*i)-=2){ low[(*i)+1] = high[(*i)>>1]; low[*i] = low[(*i)>>1]; } } static always_inline void snow_horizontal_compose_lift_lead_out(int i, DWTELEM * dst, DWTELEM * src, DWTELEM * 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 always_inline void snow_horizontal_compose_liftS_lead_out(int i, DWTELEM * dst, DWTELEM * src, DWTELEM * 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