/* * Copyright (C) 2004-2010 Michael Niedermayer <michaelni@gmx.at> * Copyright (C) 2008 David Conrad * * 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 */ #include "libavutil/attributes.h" #include "libavutil/avassert.h" #include "libavutil/common.h" #include "dsputil.h" #include "dirac_dwt.h" #include "libavcodec/x86/dirac_dwt.h" static inline int mirror(int v, int m) { while ((unsigned)v > (unsigned)m) { v = -v; if (v < 0) v += 2 * m; } return v; } static void vertical_compose53iL0(IDWTELEM *b0, IDWTELEM *b1, IDWTELEM *b2, int width) { int i; for (i = 0; i < width; i++) b1[i] -= (b0[i] + b2[i] + 2) >> 2; } static av_always_inline void interleave(IDWTELEM *dst, IDWTELEM *src0, IDWTELEM *src1, int w2, int add, int shift) { int i; for (i = 0; i < w2; i++) { dst[2*i ] = (src0[i] + add) >> shift; dst[2*i+1] = (src1[i] + add) >> shift; } } static void horizontal_compose_dirac53i(IDWTELEM *b, IDWTELEM *temp, int w) { const int w2 = w >> 1; int x; temp[0] = COMPOSE_53iL0(b[w2], b[0], b[w2]); for (x = 1; x < w2; x++) { temp[x ] = COMPOSE_53iL0 (b[x+w2-1], b[x ], b[x+w2]); temp[x+w2-1] = COMPOSE_DIRAC53iH0(temp[x-1], b[x+w2-1], temp[x]); } temp[w-1] = COMPOSE_DIRAC53iH0(temp[w2-1], b[w-1], temp[w2-1]); interleave(b, temp, temp+w2, w2, 1, 1); } static void horizontal_compose_dd97i(IDWTELEM *b, IDWTELEM *tmp, int w) { const int w2 = w >> 1; int x; tmp[0] = COMPOSE_53iL0(b[w2], b[0], b[w2]); for (x = 1; x < w2; x++) tmp[x] = COMPOSE_53iL0(b[x+w2-1], b[x], b[x+w2]); // extend the edges tmp[-1] = tmp[0]; tmp[w2+1] = tmp[w2] = tmp[w2-1]; for (x = 0; x < w2; x++) { b[2*x ] = (tmp[x] + 1)>>1; b[2*x+1] = (COMPOSE_DD97iH0(tmp[x-1], tmp[x], b[x+w2], tmp[x+1], tmp[x+2]) + 1)>>1; } } static void horizontal_compose_dd137i(IDWTELEM *b, IDWTELEM *tmp, int w) { const int w2 = w >> 1; int x; tmp[0] = COMPOSE_DD137iL0(b[w2], b[w2], b[0], b[w2 ], b[w2+1]); tmp[1] = COMPOSE_DD137iL0(b[w2], b[w2], b[1], b[w2+1], b[w2+2]); for (x = 2; x < w2-1; x++) tmp[x] = COMPOSE_DD137iL0(b[x+w2-2], b[x+w2-1], b[x], b[x+w2], b[x+w2+1]); tmp[w2-1] = COMPOSE_DD137iL0(b[w-3], b[w-2], b[w2-1], b[w-1], b[w-1]); // extend the edges tmp[-1] = tmp[0]; tmp[w2+1] = tmp[w2] = tmp[w2-1]; for (x = 0; x < w2; x++) { b[2*x ] = (tmp[x] + 1)>>1; b[2*x+1] = (COMPOSE_DD97iH0(tmp[x-1], tmp[x], b[x+w2], tmp[x+1], tmp[x+2]) + 1)>>1; } } static av_always_inline void horizontal_compose_haari(IDWTELEM *b, IDWTELEM *temp, int w, int shift) { const int w2 = w >> 1; int x; for (x = 0; x < w2; x++) { temp[x ] = COMPOSE_HAARiL0(b[x ], b[x+w2]); temp[x+w2] = COMPOSE_HAARiH0(b[x+w2], temp[x]); } interleave(b, temp, temp+w2, w2, shift, shift); } static void horizontal_compose_haar0i(IDWTELEM *b, IDWTELEM *temp, int w) { horizontal_compose_haari(b, temp, w, 0); } static void horizontal_compose_haar1i(IDWTELEM *b, IDWTELEM *temp, int w) { horizontal_compose_haari(b, temp, w, 1); } static void horizontal_compose_fidelityi(IDWTELEM *b, IDWTELEM *tmp, int w) { const int w2 = w >> 1; int i, x; IDWTELEM v[8]; for (x = 0; x < w2; x++) { for (i = 0; i < 8; i++) v[i] = b[av_clip(x-3+i, 0, w2-1)]; tmp[x] = COMPOSE_FIDELITYiH0(v[0], v[1], v[2], v[3], b[x+w2], v[4], v[5], v[6], v[7]); } for (x = 0; x < w2; x++) { for (i = 0; i < 8; i++) v[i] = tmp[av_clip(x-4+i, 0, w2-1)]; tmp[x+w2] = COMPOSE_FIDELITYiL0(v[0], v[1], v[2], v[3], b[x], v[4], v[5], v[6], v[7]); } interleave(b, tmp+w2, tmp, w2, 0, 0); } static void horizontal_compose_daub97i(IDWTELEM *b, IDWTELEM *temp, int w) { const int w2 = w >> 1; int x, b0, b1, b2; temp[0] = COMPOSE_DAUB97iL1(b[w2], b[0], b[w2]); for (x = 1; x < w2; x++) { temp[x ] = COMPOSE_DAUB97iL1(b[x+w2-1], b[x ], b[x+w2]); temp[x+w2-1] = COMPOSE_DAUB97iH1(temp[x-1], b[x+w2-1], temp[x]); } temp[w-1] = COMPOSE_DAUB97iH1(temp[w2-1], b[w-1], temp[w2-1]); // second stage combined with interleave and shift b0 = b2 = COMPOSE_DAUB97iL0(temp[w2], temp[0], temp[w2]); b[0] = (b0 + 1) >> 1; for (x = 1; x < w2; x++) { b2 = COMPOSE_DAUB97iL0(temp[x+w2-1], temp[x ], temp[x+w2]); b1 = COMPOSE_DAUB97iH0( b0, temp[x+w2-1], b2 ); b[2*x-1] = (b1 + 1) >> 1; b[2*x ] = (b2 + 1) >> 1; b0 = b2; } b[w-1] = (COMPOSE_DAUB97iH0(b2, temp[w-1], b2) + 1) >> 1; } static void vertical_compose_dirac53iH0(IDWTELEM *b0, IDWTELEM *b1, IDWTELEM *b2, int width) { int i; for(i=0; i<width; i++){ b1[i] = COMPOSE_DIRAC53iH0(b0[i], b1[i], b2[i]); } } static void vertical_compose_dd97iH0(IDWTELEM *b0, IDWTELEM *b1, IDWTELEM *b2, IDWTELEM *b3, IDWTELEM *b4, int width) { int i; for(i=0; i<width; i++){ b2[i] = COMPOSE_DD97iH0(b0[i], b1[i], b2[i], b3[i], b4[i]); } } static void vertical_compose_dd137iL0(IDWTELEM *b0, IDWTELEM *b1, IDWTELEM *b2, IDWTELEM *b3, IDWTELEM *b4, int width) { int i; for(i=0; i<width; i++){ b2[i] = COMPOSE_DD137iL0(b0[i], b1[i], b2[i], b3[i], b4[i]); } } static void vertical_compose_haar(IDWTELEM *b0, IDWTELEM *b1, int width) { int i; for (i = 0; i < width; i++) { b0[i] = COMPOSE_HAARiL0(b0[i], b1[i]); b1[i] = COMPOSE_HAARiH0(b1[i], b0[i]); } } static void vertical_compose_fidelityiH0(IDWTELEM *dst, IDWTELEM *b[8], int width) { int i; for(i=0; i<width; i++){ dst[i] = COMPOSE_FIDELITYiH0(b[0][i], b[1][i], b[2][i], b[3][i], dst[i], b[4][i], b[5][i], b[6][i], b[7][i]); } } static void vertical_compose_fidelityiL0(IDWTELEM *dst, IDWTELEM *b[8], int width) { int i; for(i=0; i<width; i++){ dst[i] = COMPOSE_FIDELITYiL0(b[0][i], b[1][i], b[2][i], b[3][i], dst[i], b[4][i], b[5][i], b[6][i], b[7][i]); } } static void vertical_compose_daub97iH0(IDWTELEM *b0, IDWTELEM *b1, IDWTELEM *b2, int width) { int i; for(i=0; i<width; i++){ b1[i] = COMPOSE_DAUB97iH0(b0[i], b1[i], b2[i]); } } static void vertical_compose_daub97iH1(IDWTELEM *b0, IDWTELEM *b1, IDWTELEM *b2, int width) { int i; for(i=0; i<width; i++){ b1[i] = COMPOSE_DAUB97iH1(b0[i], b1[i], b2[i]); } } static void vertical_compose_daub97iL0(IDWTELEM *b0, IDWTELEM *b1, IDWTELEM *b2, int width) { int i; for(i=0; i<width; i++){ b1[i] = COMPOSE_DAUB97iL0(b0[i], b1[i], b2[i]); } } static void vertical_compose_daub97iL1(IDWTELEM *b0, IDWTELEM *b1, IDWTELEM *b2, int width) { int i; for(i=0; i<width; i++){ b1[i] = COMPOSE_DAUB97iL1(b0[i], b1[i], b2[i]); } } static void spatial_compose_dd97i_dy(DWTContext *d, int level, int width, int height, int stride) { vertical_compose_3tap vertical_compose_l0 = (void*)d->vertical_compose_l0; vertical_compose_5tap vertical_compose_h0 = (void*)d->vertical_compose_h0; DWTCompose *cs = d->cs + level; int i, y = cs->y; IDWTELEM *b[8]; for (i = 0; i < 6; i++) b[i] = cs->b[i]; b[6] = d->buffer + av_clip(y+5, 0, height-2)*stride; b[7] = d->buffer + av_clip(y+6, 1, height-1)*stride; if(y+5<(unsigned)height) vertical_compose_l0( b[5], b[6], b[7], width); if(y+1<(unsigned)height) vertical_compose_h0(b[0], b[2], b[3], b[4], b[6], width); if(y-1<(unsigned)height) d->horizontal_compose(b[0], d->temp, width); if(y+0<(unsigned)height) d->horizontal_compose(b[1], d->temp, width); for (i = 0; i < 6; i++) cs->b[i] = b[i+2]; cs->y += 2; } static void spatial_compose_dirac53i_dy(DWTContext *d, int level, int width, int height, int stride) { vertical_compose_3tap vertical_compose_l0 = (void*)d->vertical_compose_l0; vertical_compose_3tap vertical_compose_h0 = (void*)d->vertical_compose_h0; DWTCompose *cs = d->cs + level; int y= cs->y; IDWTELEM *b[4] = { cs->b[0], cs->b[1] }; b[2] = d->buffer + mirror(y+1, height-1)*stride; b[3] = d->buffer + mirror(y+2, height-1)*stride; if(y+1<(unsigned)height) vertical_compose_l0(b[1], b[2], b[3], width); if(y+0<(unsigned)height) vertical_compose_h0(b[0], b[1], b[2], width); if(y-1<(unsigned)height) d->horizontal_compose(b[0], d->temp, width); if(y+0<(unsigned)height) d->horizontal_compose(b[1], d->temp, width); cs->b[0] = b[2]; cs->b[1] = b[3]; cs->y += 2; } static void spatial_compose_dd137i_dy(DWTContext *d, int level, int width, int height, int stride) { vertical_compose_5tap vertical_compose_l0 = (void*)d->vertical_compose_l0; vertical_compose_5tap vertical_compose_h0 = (void*)d->vertical_compose_h0; DWTCompose *cs = d->cs + level; int i, y = cs->y; IDWTELEM *b[10]; for (i = 0; i < 8; i++) b[i] = cs->b[i]; b[8] = d->buffer + av_clip(y+7, 0, height-2)*stride; b[9] = d->buffer + av_clip(y+8, 1, height-1)*stride; if(y+5<(unsigned)height) vertical_compose_l0(b[3], b[5], b[6], b[7], b[9], width); if(y+1<(unsigned)height) vertical_compose_h0(b[0], b[2], b[3], b[4], b[6], width); if(y-1<(unsigned)height) d->horizontal_compose(b[0], d->temp, width); if(y+0<(unsigned)height) d->horizontal_compose(b[1], d->temp, width); for (i = 0; i < 8; i++) cs->b[i] = b[i+2]; cs->y += 2; } // haar makes the assumption that height is even (always true for dirac) static void spatial_compose_haari_dy(DWTContext *d, int level, int width, int height, int stride) { vertical_compose_2tap vertical_compose = (void*)d->vertical_compose; int y = d->cs[level].y; IDWTELEM *b0 = d->buffer + (y-1)*stride; IDWTELEM *b1 = d->buffer + (y )*stride; vertical_compose(b0, b1, width); d->horizontal_compose(b0, d->temp, width); d->horizontal_compose(b1, d->temp, width); d->cs[level].y += 2; } // Don't do sliced idwt for fidelity; the 9 tap filter makes it a bit annoying // Fortunately, this filter isn't used in practice. static void spatial_compose_fidelity(DWTContext *d, int level, int width, int height, int stride) { vertical_compose_9tap vertical_compose_l0 = (void*)d->vertical_compose_l0; vertical_compose_9tap vertical_compose_h0 = (void*)d->vertical_compose_h0; int i, y; IDWTELEM *b[8]; for (y = 1; y < height; y += 2) { for (i = 0; i < 8; i++) b[i] = d->buffer + av_clip((y-7 + 2*i), 0, height-2)*stride; vertical_compose_h0(d->buffer + y*stride, b, width); } for (y = 0; y < height; y += 2) { for (i = 0; i < 8; i++) b[i] = d->buffer + av_clip((y-7 + 2*i), 1, height-1)*stride; vertical_compose_l0(d->buffer + y*stride, b, width); } for (y = 0; y < height; y++) d->horizontal_compose(d->buffer + y*stride, d->temp, width); d->cs[level].y = height+1; } static void spatial_compose_daub97i_dy(DWTContext *d, int level, int width, int height, int stride) { vertical_compose_3tap vertical_compose_l0 = (void*)d->vertical_compose_l0; vertical_compose_3tap vertical_compose_h0 = (void*)d->vertical_compose_h0; vertical_compose_3tap vertical_compose_l1 = (void*)d->vertical_compose_l1; vertical_compose_3tap vertical_compose_h1 = (void*)d->vertical_compose_h1; DWTCompose *cs = d->cs + level; int i, y = cs->y; IDWTELEM *b[6]; for (i = 0; i < 4; i++) b[i] = cs->b[i]; b[4] = d->buffer + mirror(y+3, height-1)*stride; b[5] = d->buffer + mirror(y+4, height-1)*stride; if(y+3<(unsigned)height) vertical_compose_l1(b[3], b[4], b[5], width); if(y+2<(unsigned)height) vertical_compose_h1(b[2], b[3], b[4], width); if(y+1<(unsigned)height) vertical_compose_l0(b[1], b[2], b[3], width); if(y+0<(unsigned)height) vertical_compose_h0(b[0], b[1], b[2], width); if(y-1<(unsigned)height) d->horizontal_compose(b[0], d->temp, width); if(y+0<(unsigned)height) d->horizontal_compose(b[1], d->temp, width); for (i = 0; i < 4; i++) cs->b[i] = b[i+2]; cs->y += 2; } static void spatial_compose97i_init2(DWTCompose *cs, IDWTELEM *buffer, int height, int stride) { cs->b[0] = buffer + mirror(-3-1, height-1)*stride; cs->b[1] = buffer + mirror(-3 , height-1)*stride; cs->b[2] = buffer + mirror(-3+1, height-1)*stride; cs->b[3] = buffer + mirror(-3+2, height-1)*stride; cs->y = -3; } static void spatial_compose53i_init2(DWTCompose *cs, IDWTELEM *buffer, int height, int stride) { cs->b[0] = buffer + mirror(-1-1, height-1)*stride; cs->b[1] = buffer + mirror(-1 , height-1)*stride; cs->y = -1; } static void spatial_compose_dd97i_init(DWTCompose *cs, IDWTELEM *buffer, int height, int stride) { cs->b[0] = buffer + av_clip(-5-1, 0, height-2)*stride; cs->b[1] = buffer + av_clip(-5 , 1, height-1)*stride; cs->b[2] = buffer + av_clip(-5+1, 0, height-2)*stride; cs->b[3] = buffer + av_clip(-5+2, 1, height-1)*stride; cs->b[4] = buffer + av_clip(-5+3, 0, height-2)*stride; cs->b[5] = buffer + av_clip(-5+4, 1, height-1)*stride; cs->y = -5; } static void spatial_compose_dd137i_init(DWTCompose *cs, IDWTELEM *buffer, int height, int stride) { cs->b[0] = buffer + av_clip(-5-1, 0, height-2)*stride; cs->b[1] = buffer + av_clip(-5 , 1, height-1)*stride; cs->b[2] = buffer + av_clip(-5+1, 0, height-2)*stride; cs->b[3] = buffer + av_clip(-5+2, 1, height-1)*stride; cs->b[4] = buffer + av_clip(-5+3, 0, height-2)*stride; cs->b[5] = buffer + av_clip(-5+4, 1, height-1)*stride; cs->b[6] = buffer + av_clip(-5+5, 0, height-2)*stride; cs->b[7] = buffer + av_clip(-5+6, 1, height-1)*stride; cs->y = -5; } int ff_spatial_idwt_init2(DWTContext *d, IDWTELEM *buffer, int width, int height, int stride, enum dwt_type type, int decomposition_count, IDWTELEM *temp) { int level; d->buffer = buffer; d->width = width; d->height = height; d->stride = stride; d->decomposition_count = decomposition_count; d->temp = temp + 8; for(level=decomposition_count-1; level>=0; level--){ int hl = height >> level; int stride_l = stride << level; switch(type){ case DWT_DIRAC_DD9_7: spatial_compose_dd97i_init(d->cs+level, buffer, hl, stride_l); break; case DWT_DIRAC_LEGALL5_3: spatial_compose53i_init2(d->cs+level, buffer, hl, stride_l); break; case DWT_DIRAC_DD13_7: spatial_compose_dd137i_init(d->cs+level, buffer, hl, stride_l); break; case DWT_DIRAC_HAAR0: case DWT_DIRAC_HAAR1: d->cs[level].y = 1; break; case DWT_DIRAC_DAUB9_7: spatial_compose97i_init2(d->cs+level, buffer, hl, stride_l); break; default: d->cs[level].y = 0; break; } } switch (type) { case DWT_DIRAC_DD9_7: d->spatial_compose = spatial_compose_dd97i_dy; d->vertical_compose_l0 = (void*)vertical_compose53iL0; d->vertical_compose_h0 = (void*)vertical_compose_dd97iH0; d->horizontal_compose = horizontal_compose_dd97i; d->support = 7; break; case DWT_DIRAC_LEGALL5_3: d->spatial_compose = spatial_compose_dirac53i_dy; d->vertical_compose_l0 = (void*)vertical_compose53iL0; d->vertical_compose_h0 = (void*)vertical_compose_dirac53iH0; d->horizontal_compose = horizontal_compose_dirac53i; d->support = 3; break; case DWT_DIRAC_DD13_7: d->spatial_compose = spatial_compose_dd137i_dy; d->vertical_compose_l0 = (void*)vertical_compose_dd137iL0; d->vertical_compose_h0 = (void*)vertical_compose_dd97iH0; d->horizontal_compose = horizontal_compose_dd137i; d->support = 7; break; case DWT_DIRAC_HAAR0: case DWT_DIRAC_HAAR1: d->spatial_compose = spatial_compose_haari_dy; d->vertical_compose = (void*)vertical_compose_haar; if (type == DWT_DIRAC_HAAR0) d->horizontal_compose = horizontal_compose_haar0i; else d->horizontal_compose = horizontal_compose_haar1i; d->support = 1; break; case DWT_DIRAC_FIDELITY: d->spatial_compose = spatial_compose_fidelity; d->vertical_compose_l0 = (void*)vertical_compose_fidelityiL0; d->vertical_compose_h0 = (void*)vertical_compose_fidelityiH0; d->horizontal_compose = horizontal_compose_fidelityi; break; case DWT_DIRAC_DAUB9_7: d->spatial_compose = spatial_compose_daub97i_dy; d->vertical_compose_l0 = (void*)vertical_compose_daub97iL0; d->vertical_compose_h0 = (void*)vertical_compose_daub97iH0; d->vertical_compose_l1 = (void*)vertical_compose_daub97iL1; d->vertical_compose_h1 = (void*)vertical_compose_daub97iH1; d->horizontal_compose = horizontal_compose_daub97i; d->support = 5; break; default: av_log(NULL, AV_LOG_ERROR, "Unknown wavelet type %d\n", type); return -1; } if (HAVE_MMX) ff_spatial_idwt_init_mmx(d, type); return 0; } void ff_spatial_idwt_slice2(DWTContext *d, int y) { int level, support = d->support; for (level = d->decomposition_count-1; level >= 0; level--) { int wl = d->width >> level; int hl = d->height >> level; int stride_l = d->stride << level; while (d->cs[level].y <= FFMIN((y>>level)+support, hl)) d->spatial_compose(d, level, wl, hl, stride_l); } }