/* * Copyright (C) 2004-2010 Michael Niedermayer <michaelni@gmx.at> * * 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 */ #include "libavutil/attributes.h" #include "dsputil.h" #include "dwt.h" void ff_slice_buffer_init(slice_buffer * buf, int line_count, int max_allocated_lines, int line_width, IDWTELEM * base_buffer) { int i; buf->base_buffer = base_buffer; buf->line_count = line_count; buf->line_width = line_width; buf->data_count = max_allocated_lines; buf->line = av_mallocz (sizeof(IDWTELEM *) * line_count); buf->data_stack = av_malloc (sizeof(IDWTELEM *) * max_allocated_lines); for(i = 0; i < max_allocated_lines; i++){ buf->data_stack[i] = av_malloc (sizeof(IDWTELEM) * line_width); } buf->data_stack_top = max_allocated_lines - 1; } IDWTELEM * ff_slice_buffer_load_line(slice_buffer * buf, int line) { IDWTELEM * buffer; assert(buf->data_stack_top >= 0); // assert(!buf->line[line]); if (buf->line[line]) return buf->line[line]; buffer = buf->data_stack[buf->data_stack_top]; buf->data_stack_top--; buf->line[line] = buffer; return buffer; } void ff_slice_buffer_release(slice_buffer * buf, int line) { IDWTELEM * buffer; assert(line >= 0 && line < buf->line_count); assert(buf->line[line]); buffer = buf->line[line]; buf->data_stack_top++; buf->data_stack[buf->data_stack_top] = buffer; buf->line[line] = NULL; } void ff_slice_buffer_flush(slice_buffer * buf) { int i; for(i = 0; i < buf->line_count; i++){ if (buf->line[i]) ff_slice_buffer_release(buf, i); } } void ff_slice_buffer_destroy(slice_buffer * buf) { int i; ff_slice_buffer_flush(buf); for(i = buf->data_count - 1; i >= 0; i--){ av_freep(&buf->data_stack[i]); } av_freep(&buf->data_stack); av_freep(&buf->line); } static inline int mirror(int v, int m){ while((unsigned)v > (unsigned)m){ v=-v; if(v<0) v+= 2*m; } return v; } static av_always_inline void lift(DWTELEM *dst, DWTELEM *src, DWTELEM *ref, int dst_step, int src_step, int ref_step, int width, int mul, int add, int shift, int highpass, int inverse){ const int mirror_left= !highpass; const int mirror_right= (width&1) ^ highpass; const int w= (width>>1) - 1 + (highpass & width); int i; #define LIFT(src, ref, inv) ((src) + ((inv) ? - (ref) : + (ref))) if(mirror_left){ dst[0] = LIFT(src[0], ((mul*2*ref[0]+add)>>shift), inverse); dst += dst_step; src += src_step; } for(i=0; i<w; i++){ dst[i*dst_step] = LIFT(src[i*src_step], ((mul*(ref[i*ref_step] + ref[(i+1)*ref_step])+add)>>shift), inverse); } if(mirror_right){ dst[w*dst_step] = LIFT(src[w*src_step], ((mul*2*ref[w*ref_step]+add)>>shift), inverse); } } static av_always_inline void inv_lift(IDWTELEM *dst, IDWTELEM *src, IDWTELEM *ref, int dst_step, int src_step, int ref_step, int width, int mul, int add, int shift, int highpass, int inverse){ const int mirror_left= !highpass; const int mirror_right= (width&1) ^ highpass; const int w= (width>>1) - 1 + (highpass & width); int i; #define LIFT(src, ref, inv) ((src) + ((inv) ? - (ref) : + (ref))) if(mirror_left){ dst[0] = LIFT(src[0], ((mul*2*ref[0]+add)>>shift), inverse); dst += dst_step; src += src_step; } for(i=0; i<w; i++){ dst[i*dst_step] = LIFT(src[i*src_step], ((mul*(ref[i*ref_step] + ref[(i+1)*ref_step])+add)>>shift), inverse); } if(mirror_right){ dst[w*dst_step] = LIFT(src[w*src_step], ((mul*2*ref[w*ref_step]+add)>>shift), inverse); } } #ifndef liftS static av_always_inline void liftS(DWTELEM *dst, DWTELEM *src, DWTELEM *ref, int dst_step, int src_step, int ref_step, int width, int mul, int add, int shift, int highpass, int inverse){ const int mirror_left= !highpass; const int mirror_right= (width&1) ^ highpass; const int w= (width>>1) - 1 + (highpass & width); int i; assert(shift == 4); #define LIFTS(src, ref, inv) \ ((inv) ? \ (src) + (((ref) + 4*(src))>>shift): \ -((-16*(src) + (ref) + add/4 + 1 + (5<<25))/(5*4) - (1<<23))) if(mirror_left){ dst[0] = LIFTS(src[0], mul*2*ref[0]+add, inverse); dst += dst_step; src += src_step; } for(i=0; i<w; i++){ dst[i*dst_step] = LIFTS(src[i*src_step], mul*(ref[i*ref_step] + ref[(i+1)*ref_step])+add, inverse); } if(mirror_right){ dst[w*dst_step] = LIFTS(src[w*src_step], mul*2*ref[w*ref_step]+add, inverse); } } static av_always_inline void inv_liftS(IDWTELEM *dst, IDWTELEM *src, IDWTELEM *ref, int dst_step, int src_step, int ref_step, int width, int mul, int add, int shift, int highpass, int inverse){ const int mirror_left= !highpass; const int mirror_right= (width&1) ^ highpass; const int w= (width>>1) - 1 + (highpass & width); int i; assert(shift == 4); #define LIFTS(src, ref, inv) \ ((inv) ? \ (src) + (((ref) + 4*(src))>>shift): \ -((-16*(src) + (ref) + add/4 + 1 + (5<<25))/(5*4) - (1<<23))) if(mirror_left){ dst[0] = LIFTS(src[0], mul*2*ref[0]+add, inverse); dst += dst_step; src += src_step; } for(i=0; i<w; i++){ dst[i*dst_step] = LIFTS(src[i*src_step], mul*(ref[i*ref_step] + ref[(i+1)*ref_step])+add, inverse); } if(mirror_right){ dst[w*dst_step] = LIFTS(src[w*src_step], mul*2*ref[w*ref_step]+add, inverse); } } #endif /* ! liftS */ static void horizontal_decompose53i(DWTELEM *b, int width){ DWTELEM temp[width]; const int width2= width>>1; int x; const int w2= (width+1)>>1; for(x=0; x<width2; x++){ temp[x ]= b[2*x ]; temp[x+w2]= b[2*x + 1]; } if(width&1) temp[x ]= b[2*x ]; #if 0 { int A1,A2,A3,A4; A2= temp[1 ]; A4= temp[0 ]; A1= temp[0+width2]; A1 -= (A2 + A4)>>1; A4 += (A1 + 1)>>1; b[0+width2] = A1; b[0 ] = A4; for(x=1; x+1<width2; x+=2){ A3= temp[x+width2]; A4= temp[x+1 ]; A3 -= (A2 + A4)>>1; A2 += (A1 + A3 + 2)>>2; b[x+width2] = A3; b[x ] = A2; A1= temp[x+1+width2]; A2= temp[x+2 ]; A1 -= (A2 + A4)>>1; A4 += (A1 + A3 + 2)>>2; b[x+1+width2] = A1; b[x+1 ] = A4; } A3= temp[width-1]; A3 -= A2; A2 += (A1 + A3 + 2)>>2; b[width -1] = A3; b[width2-1] = A2; } #else lift(b+w2, temp+w2, temp, 1, 1, 1, width, -1, 0, 1, 1, 0); lift(b , temp , b+w2, 1, 1, 1, width, 1, 2, 2, 0, 0); #endif /* 0 */ } static void vertical_decompose53iH0(DWTELEM *b0, DWTELEM *b1, DWTELEM *b2, int width){ int i; for(i=0; i<width; i++){ b1[i] -= (b0[i] + b2[i])>>1; } } static void vertical_decompose53iL0(DWTELEM *b0, DWTELEM *b1, DWTELEM *b2, int width){ int i; for(i=0; i<width; i++){ b1[i] += (b0[i] + b2[i] + 2)>>2; } } static void spatial_decompose53i(DWTELEM *buffer, int width, int height, int stride){ int y; DWTELEM *b0= buffer + mirror(-2-1, height-1)*stride; DWTELEM *b1= buffer + mirror(-2 , height-1)*stride; for(y=-2; y<height; y+=2){ DWTELEM *b2= buffer + mirror(y+1, height-1)*stride; DWTELEM *b3= buffer + mirror(y+2, height-1)*stride; if(y+1<(unsigned)height) horizontal_decompose53i(b2, width); if(y+2<(unsigned)height) horizontal_decompose53i(b3, width); if(y+1<(unsigned)height) vertical_decompose53iH0(b1, b2, b3, width); if(y+0<(unsigned)height) vertical_decompose53iL0(b0, b1, b2, width); b0=b2; b1=b3; } } static void horizontal_decompose97i(DWTELEM *b, int width){ DWTELEM temp[width]; const int w2= (width+1)>>1; lift (temp+w2, b +1, b , 1, 2, 2, width, W_AM, W_AO, W_AS, 1, 1); liftS(temp , b , temp+w2, 1, 2, 1, width, W_BM, W_BO, W_BS, 0, 0); lift (b +w2, temp+w2, temp , 1, 1, 1, width, W_CM, W_CO, W_CS, 1, 0); lift (b , temp , b +w2, 1, 1, 1, width, W_DM, W_DO, W_DS, 0, 0); } static void vertical_decompose97iH0(DWTELEM *b0, DWTELEM *b1, DWTELEM *b2, int width){ int i; for(i=0; i<width; i++){ b1[i] -= (W_AM*(b0[i] + b2[i])+W_AO)>>W_AS; } } static void vertical_decompose97iH1(DWTELEM *b0, DWTELEM *b1, DWTELEM *b2, int width){ int i; for(i=0; i<width; i++){ b1[i] += (W_CM*(b0[i] + b2[i])+W_CO)>>W_CS; } } static void vertical_decompose97iL0(DWTELEM *b0, DWTELEM *b1, DWTELEM *b2, int width){ int i; for(i=0; i<width; i++){ #ifdef liftS b1[i] -= (W_BM*(b0[i] + b2[i])+W_BO)>>W_BS; #else b1[i] = (16*4*b1[i] - 4*(b0[i] + b2[i]) + W_BO*5 + (5<<27)) / (5*16) - (1<<23); #endif } } static void vertical_decompose97iL1(DWTELEM *b0, DWTELEM *b1, DWTELEM *b2, int width){ int i; for(i=0; i<width; i++){ b1[i] += (W_DM*(b0[i] + b2[i])+W_DO)>>W_DS; } } static void spatial_decompose97i(DWTELEM *buffer, int width, int height, int stride){ int y; DWTELEM *b0= buffer + mirror(-4-1, height-1)*stride; DWTELEM *b1= buffer + mirror(-4 , height-1)*stride; DWTELEM *b2= buffer + mirror(-4+1, height-1)*stride; DWTELEM *b3= buffer + mirror(-4+2, height-1)*stride; for(y=-4; y<height; y+=2){ DWTELEM *b4= buffer + mirror(y+3, height-1)*stride; DWTELEM *b5= buffer + mirror(y+4, height-1)*stride; if(y+3<(unsigned)height) horizontal_decompose97i(b4, width); if(y+4<(unsigned)height) horizontal_decompose97i(b5, width); if(y+3<(unsigned)height) vertical_decompose97iH0(b3, b4, b5, width); if(y+2<(unsigned)height) vertical_decompose97iL0(b2, b3, b4, width); if(y+1<(unsigned)height) vertical_decompose97iH1(b1, b2, b3, width); if(y+0<(unsigned)height) vertical_decompose97iL1(b0, b1, b2, width); b0=b2; b1=b3; b2=b4; b3=b5; } } void ff_spatial_dwt(DWTELEM *buffer, int width, int height, int stride, int type, int decomposition_count){ int level; for(level=0; level<decomposition_count; level++){ switch(type){ case DWT_97: spatial_decompose97i(buffer, width>>level, height>>level, stride<<level); break; case DWT_53: spatial_decompose53i(buffer, width>>level, height>>level, stride<<level); break; } } } static void horizontal_compose53i(IDWTELEM *b, int width){ IDWTELEM temp[width]; const int width2= width>>1; const int w2= (width+1)>>1; int x; for(x=0; x<width2; x++){ temp[2*x ]= b[x ]; temp[2*x + 1]= b[x+w2]; } if(width&1) temp[2*x ]= b[x ]; b[0] = temp[0] - ((temp[1]+1)>>1); for(x=2; x<width-1; x+=2){ b[x ] = temp[x ] - ((temp[x-1] + temp[x+1]+2)>>2); b[x-1] = temp[x-1] + ((b [x-2] + b [x ]+1)>>1); } if(width&1){ b[x ] = temp[x ] - ((temp[x-1]+1)>>1); b[x-1] = temp[x-1] + ((b [x-2] + b [x ]+1)>>1); }else b[x-1] = temp[x-1] + b[x-2]; } static void vertical_compose53iH0(IDWTELEM *b0, IDWTELEM *b1, IDWTELEM *b2, int width){ int i; for(i=0; i<width; i++){ b1[i] += (b0[i] + b2[i])>>1; } } 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 void spatial_compose53i_buffered_init(DWTCompose *cs, slice_buffer * sb, int height, int stride_line){ cs->b0 = slice_buffer_get_line(sb, mirror(-1-1, height-1) * stride_line); cs->b1 = slice_buffer_get_line(sb, mirror(-1 , height-1) * stride_line); cs->y = -1; } static void spatial_compose53i_init(DWTCompose *cs, IDWTELEM *buffer, int height, int stride){ cs->b0 = buffer + mirror(-1-1, height-1)*stride; cs->b1 = buffer + mirror(-1 , height-1)*stride; cs->y = -1; } static void spatial_compose53i_dy_buffered(DWTCompose *cs, slice_buffer * sb, int width, int height, int stride_line){ int y= cs->y; IDWTELEM *b0= cs->b0; IDWTELEM *b1= cs->b1; IDWTELEM *b2= slice_buffer_get_line(sb, mirror(y+1, height-1) * stride_line); IDWTELEM *b3= slice_buffer_get_line(sb, mirror(y+2, height-1) * stride_line); if(y+1<(unsigned)height && y<(unsigned)height){ int x; for(x=0; x<width; x++){ b2[x] -= (b1[x] + b3[x] + 2)>>2; b1[x] += (b0[x] + b2[x])>>1; } }else{ if(y+1<(unsigned)height) vertical_compose53iL0(b1, b2, b3, width); if(y+0<(unsigned)height) vertical_compose53iH0(b0, b1, b2, width); } if(y-1<(unsigned)height) horizontal_compose53i(b0, width); if(y+0<(unsigned)height) horizontal_compose53i(b1, width); cs->b0 = b2; cs->b1 = b3; cs->y += 2; } static void spatial_compose53i_dy(DWTCompose *cs, IDWTELEM *buffer, int width, int height, int stride){ int y= cs->y; IDWTELEM *b0= cs->b0; IDWTELEM *b1= cs->b1; IDWTELEM *b2= buffer + mirror(y+1, height-1)*stride; IDWTELEM *b3= buffer + mirror(y+2, height-1)*stride; if(y+1<(unsigned)height) vertical_compose53iL0(b1, b2, b3, width); if(y+0<(unsigned)height) vertical_compose53iH0(b0, b1, b2, width); if(y-1<(unsigned)height) horizontal_compose53i(b0, width); if(y+0<(unsigned)height) horizontal_compose53i(b1, width); cs->b0 = b2; cs->b1 = b3; cs->y += 2; } static void av_unused spatial_compose53i(IDWTELEM *buffer, int width, int height, int stride){ DWTCompose cs; spatial_compose53i_init(&cs, buffer, height, stride); while(cs.y <= height) spatial_compose53i_dy(&cs, buffer, width, height, stride); } void ff_snow_horizontal_compose97i(IDWTELEM *b, int width){ IDWTELEM temp[width]; const int w2= (width+1)>>1; #if 0 //maybe more understadable but slower inv_lift (temp , b , b +w2, 2, 1, 1, width, W_DM, W_DO, W_DS, 0, 1); inv_lift (temp+1 , b +w2, temp , 2, 1, 2, width, W_CM, W_CO, W_CS, 1, 1); inv_liftS(b , temp , temp+1 , 2, 2, 2, width, W_BM, W_BO, W_BS, 0, 1); inv_lift (b+1 , temp+1 , b , 2, 2, 2, width, W_AM, W_AO, W_AS, 1, 0); #else int x; temp[0] = b[0] - ((3*b[w2]+2)>>2); for(x=1; x<(width>>1); x++){ temp[2*x ] = b[x ] - ((3*(b [x+w2-1] + b[x+w2])+4)>>3); temp[2*x-1] = b[x+w2-1] - temp[2*x-2] - temp[2*x]; } if(width&1){ temp[2*x ] = b[x ] - ((3*b [x+w2-1]+2)>>2); temp[2*x-1] = b[x+w2-1] - temp[2*x-2] - temp[2*x]; }else temp[2*x-1] = b[x+w2-1] - 2*temp[2*x-2]; b[0] = temp[0] + ((2*temp[0] + temp[1]+4)>>3); for(x=2; x<width-1; x+=2){ b[x ] = temp[x ] + ((4*temp[x ] + temp[x-1] + temp[x+1]+8)>>4); b[x-1] = temp[x-1] + ((3*(b [x-2] + b [x ] ))>>1); } if(width&1){ b[x ] = temp[x ] + ((2*temp[x ] + temp[x-1]+4)>>3); b[x-1] = temp[x-1] + ((3*(b [x-2] + b [x ] ))>>1); }else b[x-1] = temp[x-1] + 3*b [x-2]; #endif } static void vertical_compose97iH0(IDWTELEM *b0, IDWTELEM *b1, IDWTELEM *b2, int width){ int i; for(i=0; i<width; i++){ b1[i] += (W_AM*(b0[i] + b2[i])+W_AO)>>W_AS; } } static void vertical_compose97iH1(IDWTELEM *b0, IDWTELEM *b1, IDWTELEM *b2, int width){ int i; for(i=0; i<width; i++){ b1[i] -= (W_CM*(b0[i] + b2[i])+W_CO)>>W_CS; } } static void vertical_compose97iL0(IDWTELEM *b0, IDWTELEM *b1, IDWTELEM *b2, int width){ int i; for(i=0; i<width; i++){ #ifdef liftS b1[i] += (W_BM*(b0[i] + b2[i])+W_BO)>>W_BS; #else b1[i] += (W_BM*(b0[i] + b2[i])+4*b1[i]+W_BO)>>W_BS; #endif } } static void vertical_compose97iL1(IDWTELEM *b0, IDWTELEM *b1, IDWTELEM *b2, int width){ int i; for(i=0; i<width; i++){ b1[i] -= (W_DM*(b0[i] + b2[i])+W_DO)>>W_DS; } } void ff_snow_vertical_compose97i(IDWTELEM *b0, IDWTELEM *b1, IDWTELEM *b2, IDWTELEM *b3, IDWTELEM *b4, IDWTELEM *b5, int width){ int i; for(i=0; i<width; i++){ b4[i] -= (W_DM*(b3[i] + b5[i])+W_DO)>>W_DS; b3[i] -= (W_CM*(b2[i] + b4[i])+W_CO)>>W_CS; #ifdef liftS b2[i] += (W_BM*(b1[i] + b3[i])+W_BO)>>W_BS; #else b2[i] += (W_BM*(b1[i] + b3[i])+4*b2[i]+W_BO)>>W_BS; #endif b1[i] += (W_AM*(b0[i] + b2[i])+W_AO)>>W_AS; } } static void spatial_compose97i_buffered_init(DWTCompose *cs, slice_buffer * sb, int height, int stride_line){ cs->b0 = slice_buffer_get_line(sb, mirror(-3-1, height-1) * stride_line); cs->b1 = slice_buffer_get_line(sb, mirror(-3 , height-1) * stride_line); cs->b2 = slice_buffer_get_line(sb, mirror(-3+1, height-1) * stride_line); cs->b3 = slice_buffer_get_line(sb, mirror(-3+2, height-1) * stride_line); cs->y = -3; } static void spatial_compose97i_init(DWTCompose *cs, IDWTELEM *buffer, int height, int stride){ cs->b0 = buffer + mirror(-3-1, height-1)*stride; cs->b1 = buffer + mirror(-3 , height-1)*stride; cs->b2 = buffer + mirror(-3+1, height-1)*stride; cs->b3 = buffer + mirror(-3+2, height-1)*stride; cs->y = -3; } static void spatial_compose97i_dy_buffered(DWTContext *dsp, DWTCompose *cs, slice_buffer * sb, int width, int height, int stride_line){ int y = cs->y; IDWTELEM *b0= cs->b0; IDWTELEM *b1= cs->b1; IDWTELEM *b2= cs->b2; IDWTELEM *b3= cs->b3; IDWTELEM *b4= slice_buffer_get_line(sb, mirror(y + 3, height - 1) * stride_line); IDWTELEM *b5= slice_buffer_get_line(sb, mirror(y + 4, height - 1) * stride_line); if(y>0 && y+4<height){ dsp->vertical_compose97i(b0, b1, b2, b3, b4, b5, width); }else{ if(y+3<(unsigned)height) vertical_compose97iL1(b3, b4, b5, width); if(y+2<(unsigned)height) vertical_compose97iH1(b2, b3, b4, width); if(y+1<(unsigned)height) vertical_compose97iL0(b1, b2, b3, width); if(y+0<(unsigned)height) vertical_compose97iH0(b0, b1, b2, width); } if(y-1<(unsigned)height) dsp->horizontal_compose97i(b0, width); if(y+0<(unsigned)height) dsp->horizontal_compose97i(b1, width); cs->b0=b2; cs->b1=b3; cs->b2=b4; cs->b3=b5; cs->y += 2; } static void spatial_compose97i_dy(DWTCompose *cs, IDWTELEM *buffer, int width, int height, int stride){ int y = cs->y; IDWTELEM *b0= cs->b0; IDWTELEM *b1= cs->b1; IDWTELEM *b2= cs->b2; IDWTELEM *b3= cs->b3; IDWTELEM *b4= buffer + mirror(y+3, height-1)*stride; IDWTELEM *b5= buffer + mirror(y+4, height-1)*stride; if(y+3<(unsigned)height) vertical_compose97iL1(b3, b4, b5, width); if(y+2<(unsigned)height) vertical_compose97iH1(b2, b3, b4, width); if(y+1<(unsigned)height) vertical_compose97iL0(b1, b2, b3, width); if(y+0<(unsigned)height) vertical_compose97iH0(b0, b1, b2, width); if(y-1<(unsigned)height) ff_snow_horizontal_compose97i(b0, width); if(y+0<(unsigned)height) ff_snow_horizontal_compose97i(b1, width); cs->b0=b2; cs->b1=b3; cs->b2=b4; cs->b3=b5; cs->y += 2; } static void av_unused spatial_compose97i(IDWTELEM *buffer, int width, int height, int stride){ DWTCompose cs; spatial_compose97i_init(&cs, buffer, height, stride); while(cs.y <= height) spatial_compose97i_dy(&cs, buffer, width, height, stride); } void ff_spatial_idwt_buffered_init(DWTCompose *cs, slice_buffer * sb, int width, int height, int stride_line, int type, int decomposition_count){ int level; for(level=decomposition_count-1; level>=0; level--){ switch(type){ case DWT_97: spatial_compose97i_buffered_init(cs+level, sb, height>>level, stride_line<<level); break; case DWT_53: spatial_compose53i_buffered_init(cs+level, sb, height>>level, stride_line<<level); break; } } } void ff_spatial_idwt_buffered_slice(DWTContext *dsp, DWTCompose *cs, slice_buffer * slice_buf, int width, int height, int stride_line, int type, int decomposition_count, int y){ const int support = type==1 ? 3 : 5; int level; if(type==2) return; for(level=decomposition_count-1; level>=0; level--){ while(cs[level].y <= FFMIN((y>>level)+support, height>>level)){ switch(type){ case DWT_97: spatial_compose97i_dy_buffered(dsp, cs+level, slice_buf, width>>level, height>>level, stride_line<<level); break; case DWT_53: spatial_compose53i_dy_buffered(cs+level, slice_buf, width>>level, height>>level, stride_line<<level); break; } } } } static void ff_spatial_idwt_init(DWTCompose *cs, IDWTELEM *buffer, int width, int height, int stride, int type, int decomposition_count){ int level; for(level=decomposition_count-1; level>=0; level--){ switch(type){ case DWT_97: spatial_compose97i_init(cs+level, buffer, height>>level, stride<<level); break; case DWT_53: spatial_compose53i_init(cs+level, buffer, height>>level, stride<<level); break; } } } static void ff_spatial_idwt_slice(DWTCompose *cs, IDWTELEM *buffer, int width, int height, int stride, int type, int decomposition_count, int y){ const int support = type==1 ? 3 : 5; int level; if(type==2) return; for(level=decomposition_count-1; level>=0; level--){ while(cs[level].y <= FFMIN((y>>level)+support, height>>level)){ switch(type){ case DWT_97: spatial_compose97i_dy(cs+level, buffer, width>>level, height>>level, stride<<level); break; case DWT_53: spatial_compose53i_dy(cs+level, buffer, width>>level, height>>level, stride<<level); break; } } } } void ff_spatial_idwt(IDWTELEM *buffer, int width, int height, int stride, int type, int decomposition_count){ DWTCompose cs[MAX_DECOMPOSITIONS]; int y; ff_spatial_idwt_init(cs, buffer, width, height, stride, type, decomposition_count); for(y=0; y<height; y+=4) ff_spatial_idwt_slice(cs, buffer, width, height, stride, type, decomposition_count, y); } static inline int w_c(void *v, uint8_t * pix1, uint8_t * pix2, int line_size, int w, int h, int type){ int s, i, j; const int dec_count= w==8 ? 3 : 4; int tmp[32*32]; int level, ori; static const int scale[2][2][4][4]={ { { // 9/7 8x8 dec=3 {268, 239, 239, 213}, { 0, 224, 224, 152}, { 0, 135, 135, 110}, },{ // 9/7 16x16 or 32x32 dec=4 {344, 310, 310, 280}, { 0, 320, 320, 228}, { 0, 175, 175, 136}, { 0, 129, 129, 102}, } },{ { // 5/3 8x8 dec=3 {275, 245, 245, 218}, { 0, 230, 230, 156}, { 0, 138, 138, 113}, },{ // 5/3 16x16 or 32x32 dec=4 {352, 317, 317, 286}, { 0, 328, 328, 233}, { 0, 180, 180, 140}, { 0, 132, 132, 105}, } } }; for (i = 0; i < h; i++) { for (j = 0; j < w; j+=4) { tmp[32*i+j+0] = (pix1[j+0] - pix2[j+0])<<4; tmp[32*i+j+1] = (pix1[j+1] - pix2[j+1])<<4; tmp[32*i+j+2] = (pix1[j+2] - pix2[j+2])<<4; tmp[32*i+j+3] = (pix1[j+3] - pix2[j+3])<<4; } pix1 += line_size; pix2 += line_size; } ff_spatial_dwt(tmp, w, h, 32, type, dec_count); s=0; assert(w==h); for(level=0; level<dec_count; level++){ for(ori= level ? 1 : 0; ori<4; ori++){ int size= w>>(dec_count-level); int sx= (ori&1) ? size : 0; int stride= 32<<(dec_count-level); int sy= (ori&2) ? stride>>1 : 0; for(i=0; i<size; i++){ for(j=0; j<size; j++){ int v= tmp[sx + sy + i*stride + j] * scale[type][dec_count-3][level][ori]; s += FFABS(v); } } } } assert(s>=0); return s>>9; } static int w53_8_c(void *v, uint8_t * pix1, uint8_t * pix2, int line_size, int h){ return w_c(v, pix1, pix2, line_size, 8, h, 1); } static int w97_8_c(void *v, uint8_t * pix1, uint8_t * pix2, int line_size, int h){ return w_c(v, pix1, pix2, line_size, 8, h, 0); } static int w53_16_c(void *v, uint8_t * pix1, uint8_t * pix2, int line_size, int h){ return w_c(v, pix1, pix2, line_size, 16, h, 1); } static int w97_16_c(void *v, uint8_t * pix1, uint8_t * pix2, int line_size, int h){ return w_c(v, pix1, pix2, line_size, 16, h, 0); } int ff_w53_32_c(void *v, uint8_t * pix1, uint8_t * pix2, int line_size, int h){ return w_c(v, pix1, pix2, line_size, 32, h, 1); } int ff_w97_32_c(void *v, uint8_t * pix1, uint8_t * pix2, int line_size, int h){ return w_c(v, pix1, pix2, line_size, 32, h, 0); } void ff_dsputil_init_dwt(DSPContext *c) { c->w53[0]= w53_16_c; c->w53[1]= w53_8_c; c->w97[0]= w97_16_c; c->w97[1]= w97_8_c; } void ff_dwt_init(DWTContext *c) { c->vertical_compose97i = ff_snow_vertical_compose97i; c->horizontal_compose97i = ff_snow_horizontal_compose97i; c->inner_add_yblock = ff_snow_inner_add_yblock; if (HAVE_MMX) ff_dwt_init_x86(c); }