From 7d7f57d93932684896e87ee0859086fabe6529e6 Mon Sep 17 00:00:00 2001 From: Michael Niedermayer Date: Sat, 8 Sep 2007 14:51:13 +0000 Subject: [PATCH] store halfpel filter coefficients in the header as well as the flag for diagonal interpolation the primary reason for this change is that previously MC up to 1/4 pel matched H.264 exactly and that increases the risk of stumbling over patents secondly this allows 0.10 db or more quality gain by choosing a longer filter and the filter could also be chosen optimally for each frame though that of course would cause speed loss at the decoder and encoder side ... Originally committed as revision 10436 to svn://svn.ffmpeg.org/ffmpeg/trunk --- libavcodec/snow.c | 152 +++++++++++++++++++++++++--------- tests/ffmpeg.regression.ref | 8 +- tests/rotozoom.regression.ref | 8 +- tests/seek.regression.ref | 56 ++++++------- 4 files changed, 150 insertions(+), 74 deletions(-) diff --git a/libavcodec/snow.c b/libavcodec/snow.c index 212064b036..3091c1697c 100644 --- a/libavcodec/snow.c +++ b/libavcodec/snow.c @@ -394,7 +394,7 @@ static const BlockNode null_block= { //FIXME add border maybe #define LOG2_MB_SIZE 4 #define MB_SIZE (1<>4; b= needs[l] | needs[r]; + if(p && !p->diag_mc) + b= 15; if(b&5){ for(y=0; y < b_h+HTAPS-1; y++){ for(x=0; x < b_w; x++){ - int a_2=src[x + HTAPS/2-5]; int a_1=src[x + HTAPS/2-4]; int a0= src[x + HTAPS/2-3]; int a1= src[x + HTAPS/2-2]; @@ -2206,15 +2216,17 @@ START_TIMER int a4= src[x + HTAPS/2+1]; int a5= src[x + HTAPS/2+2]; int a6= src[x + HTAPS/2+3]; - int a7= src[x + HTAPS/2+4]; -#if HTAPS==6 - int am= 20*(a2+a3) - 5*(a1+a4) + (a0+a5); -#else - int am= 21*(a2+a3) - 7*(a1+a4) + 3*(a0+a5) - (a_1+a6); -#endif + int am=0; + if(!p || p->fast_mc){ + am= 20*(a2+a3) - 5*(a1+a4) + (a0+a5); + tmpI[x]= am; + am= (am+16)>>5; + }else{ + am= p->hcoeff[0]*(a2+a3) + p->hcoeff[1]*(a1+a4) + p->hcoeff[2]*(a0+a5) + p->hcoeff[3]*(a_1+a6); + tmpI[x]= am; + am= (am+32)>>6; + } - tmpI[x]= am; - am= (am+16)>>5; if(am&(~255)) am= ~(am>>31); tmp2[x]= am; } @@ -2230,7 +2242,6 @@ START_TIMER if(b&2){ for(y=0; y < b_h; y++){ for(x=0; x < b_w+1; x++){ - int a_2=src[x + (HTAPS/2-5)*stride]; int a_1=src[x + (HTAPS/2-4)*stride]; int a0= src[x + (HTAPS/2-3)*stride]; int a1= src[x + (HTAPS/2-2)*stride]; @@ -2239,14 +2250,12 @@ START_TIMER int a4= src[x + (HTAPS/2+1)*stride]; int a5= src[x + (HTAPS/2+2)*stride]; int a6= src[x + (HTAPS/2+3)*stride]; - int a7= src[x + (HTAPS/2+4)*stride]; -#if HTAPS==6 - int am= 20*(a2+a3) - 5*(a1+a4) + (a0+a5); -#else - int am= 21*(a2+a3) - 7*(a1+a4) + 3*(a0+a5) - (a_1+a6); -#endif + int am=0; + if(!p || p->fast_mc) + am= (20*(a2+a3) - 5*(a1+a4) + (a0+a5) + 16)>>5; + else + am= (p->hcoeff[0]*(a2+a3) + p->hcoeff[1]*(a1+a4) + p->hcoeff[2]*(a0+a5) + p->hcoeff[3]*(a_1+a6) + 32)>>6; - am= (am + 16)>>5; if(am&(~255)) am= ~(am>>31); tmp2[x]= am; } @@ -2261,7 +2270,6 @@ START_TIMER if(b&4){ for(y=0; y < b_h; y++){ for(x=0; x < b_w; x++){ - int a_2=tmpI[x + (HTAPS/2-5)*64]; int a_1=tmpI[x + (HTAPS/2-4)*64]; int a0= tmpI[x + (HTAPS/2-3)*64]; int a1= tmpI[x + (HTAPS/2-2)*64]; @@ -2270,13 +2278,11 @@ START_TIMER int a4= tmpI[x + (HTAPS/2+1)*64]; int a5= tmpI[x + (HTAPS/2+2)*64]; int a6= tmpI[x + (HTAPS/2+3)*64]; - int a7= tmpI[x + (HTAPS/2+4)*64]; -#if HTAPS==6 - int am= 20*(a2+a3) - 5*(a1+a4) + (a0+a5); -#else - int am= 21*(a2+a3) - 7*(a1+a4) + 3*(a0+a5) - (a_1+a6); -#endif - am= (am + 512)>>10; + int am=0; + if(!p || p->fast_mc) + am= (20*(a2+a3) - 5*(a1+a4) + (a0+a5) + 512)>>10; + else + am= (p->hcoeff[0]*(a2+a3) + p->hcoeff[1]*(a1+a4) + p->hcoeff[2]*(a0+a5) + p->hcoeff[3]*(a_1+a6) + 2048)>>12; if(am&(~255)) am= ~(am>>31); tmp2[x]= am; } @@ -2336,7 +2342,7 @@ STOP_TIMER("mc_block") static void mc_block_hpel ## dx ## dy ## b_w(uint8_t *dst, const uint8_t *src, int stride, int h){\ uint8_t tmp[stride*(b_w+HTAPS-1)];\ assert(h==b_w);\ - mc_block(dst, src-(HTAPS/2-1)-(HTAPS/2-1)*stride, tmp, stride, b_w, b_w, dx, dy);\ + mc_block(NULL, dst, src-(HTAPS/2-1)-(HTAPS/2-1)*stride, tmp, stride, b_w, b_w, dx, dy);\ } mca( 0, 0,16) @@ -2407,23 +2413,23 @@ static void pred_block(SnowContext *s, uint8_t *dst, uint8_t *tmp, int stride, i // assert(!(b_w&(b_w-1))); assert(b_w>1 && b_h>1); assert(tab_index>=0 && tab_index<4 || b_w==32); - if((dx&3) || (dy&3) || !(b_w == b_h || 2*b_w == b_h || b_w == 2*b_h) || (b_w&(b_w-1)) || HTAPS != 6) - mc_block(dst, src, tmp, stride, b_w, b_h, dx, dy); + if((dx&3) || (dy&3) || !(b_w == b_h || 2*b_w == b_h || b_w == 2*b_h) || (b_w&(b_w-1)) || !s->plane[plane_index].fast_mc ) + mc_block(&s->plane[plane_index], dst, src, tmp, stride, b_w, b_h, dx, dy); else if(b_w==32){ int y; for(y=0; ydsp.put_h264_qpel_pixels_tab[0][dy+(dx>>2)](dst + y*stride, src + 2 + (y+2)*stride,stride); - s->dsp.put_h264_qpel_pixels_tab[0][dy+(dx>>2)](dst + 16 + y*stride, src + 18 + (y+2)*stride,stride); + s->dsp.put_h264_qpel_pixels_tab[0][dy+(dx>>2)](dst + y*stride, src + 3 + (y+3)*stride,stride); + s->dsp.put_h264_qpel_pixels_tab[0][dy+(dx>>2)](dst + 16 + y*stride, src + 19 + (y+3)*stride,stride); } }else if(b_w==b_h) - s->dsp.put_h264_qpel_pixels_tab[tab_index ][dy+(dx>>2)](dst,src + 2 + 2*stride,stride); + s->dsp.put_h264_qpel_pixels_tab[tab_index ][dy+(dx>>2)](dst,src + 3 + 3*stride,stride); else if(b_w==2*b_h){ - s->dsp.put_h264_qpel_pixels_tab[tab_index+1][dy+(dx>>2)](dst ,src + 2 + 2*stride,stride); - s->dsp.put_h264_qpel_pixels_tab[tab_index+1][dy+(dx>>2)](dst+b_h,src + 2 + b_h + 2*stride,stride); + s->dsp.put_h264_qpel_pixels_tab[tab_index+1][dy+(dx>>2)](dst ,src + 3 + 3*stride,stride); + s->dsp.put_h264_qpel_pixels_tab[tab_index+1][dy+(dx>>2)](dst+b_h,src + 3 + b_h + 3*stride,stride); }else{ assert(2*b_w==b_h); - s->dsp.put_h264_qpel_pixels_tab[tab_index ][dy+(dx>>2)](dst ,src + 2 + 2*stride ,stride); - s->dsp.put_h264_qpel_pixels_tab[tab_index ][dy+(dx>>2)](dst+b_w*stride,src + 2 + 2*stride+b_w*stride,stride); + s->dsp.put_h264_qpel_pixels_tab[tab_index ][dy+(dx>>2)](dst ,src + 3 + 3*stride ,stride); + s->dsp.put_h264_qpel_pixels_tab[tab_index ][dy+(dx>>2)](dst+b_w*stride,src + 3 + 3*stride+b_w*stride,stride); } } } @@ -3514,7 +3520,7 @@ static void correlate(SnowContext *s, SubBand *b, IDWTELEM *src, int stride, int } static void encode_header(SnowContext *s){ - int plane_index, level, orientation; + int plane_index, level, orientation, i; uint8_t kstate[32]; memset(kstate, MID_STATE, sizeof(kstate)); @@ -3527,6 +3533,12 @@ static void encode_header(SnowContext *s){ s->last_qbias= s->last_mv_scale= s->last_block_max_depth= 0; + for(plane_index=0; plane_index<2; plane_index++){ + Plane *p= &s->plane[plane_index]; + p->last_htaps=0; + p->last_diag_mc=0; + memset(p->last_hcoeff, 0, sizeof(p->last_hcoeff)); + } } if(s->keyframe){ put_symbol(&s->c, s->header_state, s->version, 0); @@ -3550,6 +3562,32 @@ static void encode_header(SnowContext *s){ } } } + + if(!s->keyframe){ + int update_mc=0; + for(plane_index=0; plane_index<2; plane_index++){ + Plane *p= &s->plane[plane_index]; + update_mc |= p->last_htaps != p->htaps; + update_mc |= p->last_diag_mc != p->diag_mc; + update_mc |= !!memcmp(p->last_hcoeff, p->hcoeff, sizeof(p->hcoeff)); + } + if(!s->always_reset) + put_rac(&s->c, s->header_state, update_mc); + if(update_mc){ + for(plane_index=0; plane_index<2; plane_index++){ + Plane *p= &s->plane[plane_index]; + put_rac(&s->c, s->header_state, p->diag_mc); + put_symbol(&s->c, s->header_state, p->htaps/2-1, 0); + for(i= p->htaps/2; i; i--) + put_symbol(&s->c, s->header_state, FFABS(p->hcoeff[i]), 0); + + p->last_diag_mc= p->diag_mc; + p->last_htaps= p->htaps; + memcpy(p->last_hcoeff, p->hcoeff, sizeof(p->hcoeff)); + } + } + } + put_symbol(&s->c, s->header_state, s->spatial_decomposition_type - s->last_spatial_decomposition_type, 1); put_symbol(&s->c, s->header_state, s->qlog - s->last_qlog , 1); put_symbol(&s->c, s->header_state, s->mv_scale - s->last_mv_scale, 1); @@ -3608,6 +3646,28 @@ static int decode_header(SnowContext *s){ } } + if(!s->keyframe){ + if(s->always_reset || get_rac(&s->c, s->header_state)){ + for(plane_index=0; plane_index<2; plane_index++){ + int htaps, i, sum=0, absum=0; + Plane *p= &s->plane[plane_index]; + p->diag_mc= get_rac(&s->c, s->header_state); + htaps= get_symbol(&s->c, s->header_state, 0)*2 + 2; + if((unsigned)htaps > HTAPS || htaps==0) + return -1; + p->htaps= htaps; + for(i= htaps/2; i; i--){ + p->hcoeff[i]= get_symbol(&s->c, s->header_state, 0) * (1-2*(i&1)); + sum += p->hcoeff[i]; + } + p->hcoeff[0]= 32-sum; + } + s->plane[2].diag_mc= s->plane[1].diag_mc; + s->plane[2].htaps = s->plane[1].htaps; + memcpy(s->plane[2].hcoeff, s->plane[1].hcoeff, sizeof(s->plane[1].hcoeff)); + } + } + s->spatial_decomposition_type+= get_symbol(&s->c, s->header_state, 1); if(s->spatial_decomposition_type > 1){ av_log(s->avctx, AV_LOG_ERROR, "spatial_decomposition_type %d not supported", s->spatial_decomposition_type); @@ -3715,6 +3775,14 @@ static int common_init(AVCodecContext *avctx){ } s->plane[plane_index].width = w; s->plane[plane_index].height= h; + + s->plane[plane_index].diag_mc= 1; + s->plane[plane_index].htaps= 6; + s->plane[plane_index].hcoeff[0]= 40; + s->plane[plane_index].hcoeff[1]= -10; + s->plane[plane_index].hcoeff[2]= 2; + s->plane[plane_index].fast_mc= 1; + //av_log(NULL, AV_LOG_DEBUG, "%d %d\n", w, h); for(level=s->spatial_decomposition_count-1; level>=0; level--){ for(orientation=level ? 1 : 0; orientation<4; orientation++){ @@ -4354,6 +4422,14 @@ static int decode_frame(AVCodecContext *avctx, void *data, int *data_size, uint8 s->current_picture.pict_type= FF_I_TYPE; //FIXME I vs. P decode_header(s); + + for(plane_index=0; plane_index<3; plane_index++){ + Plane *p= &s->plane[plane_index]; + p->fast_mc= p->diag_mc && p->htaps==6 && p->hcoeff[0]==40 + && p->hcoeff[1]==-10 + && p->hcoeff[2]==2; + } + if(!s->block) alloc_blocks(s); frame_start(s); diff --git a/tests/ffmpeg.regression.ref b/tests/ffmpeg.regression.ref index bbb1947e8b..acba8583fd 100644 --- a/tests/ffmpeg.regression.ref +++ b/tests/ffmpeg.regression.ref @@ -141,12 +141,12 @@ f8f51fa737add17f7fecaefa118b57ed *./tests/data/a-ffv1.avi 2654678 ./tests/data/a-ffv1.avi 799d3db687f6cdd7a837ec156efc171f *./tests/data/out.yuv stddev: 0.00 PSNR:99.99 bytes:7602176 -3b419d4e700466fed31bdbdb7fd032ea *./tests/data/a-snow.avi -156682 ./tests/data/a-snow.avi +2ef414dd800dcb05f032f9b0dfb4f483 *./tests/data/a-snow.avi +156716 ./tests/data/a-snow.avi 3de2b39f90fd8331f27e627e68e076f7 *./tests/data/out.yuv stddev: 23.15 PSNR:20.83 bytes:7602176 -336d769a694cf92e21962879fea05331 *./tests/data/a-snow53.avi -3520654 ./tests/data/a-snow53.avi +5ad99548fc64ce3c83c55a37ed8f8a19 *./tests/data/a-snow53.avi +3520688 ./tests/data/a-snow53.avi 799d3db687f6cdd7a837ec156efc171f *./tests/data/out.yuv stddev: 0.00 PSNR:99.99 bytes:7602176 c299f64c3e85b928c5bfe71629cee006 *./tests/data/a-dv.dv diff --git a/tests/rotozoom.regression.ref b/tests/rotozoom.regression.ref index f4b374cd74..4ada643d9b 100644 --- a/tests/rotozoom.regression.ref +++ b/tests/rotozoom.regression.ref @@ -141,12 +141,12 @@ d72b0960e162d4998b9acbabb07e99ab *./tests/data/a-ffv1.avi 3525804 ./tests/data/a-ffv1.avi dde5895817ad9d219f79a52d0bdfb001 *./tests/data/out.yuv stddev: 0.00 PSNR:99.99 bytes:7602176 -7e658570df22365c9dbbaa2038468f3c *./tests/data/a-snow.avi -69026 ./tests/data/a-snow.avi +17de0c60b01a13c93aa114cfeebc10eb *./tests/data/a-snow.avi +69060 ./tests/data/a-snow.avi 63ea1d2fe1693be57d3ab7d351af7c55 *./tests/data/out.yuv stddev: 10.87 PSNR:27.39 bytes:7602176 -d33395ea1de6b801142be556d7699263 *./tests/data/a-snow53.avi -2721708 ./tests/data/a-snow53.avi +6139224013581f63c4dd1713ed4286db *./tests/data/a-snow53.avi +2721752 ./tests/data/a-snow53.avi dde5895817ad9d219f79a52d0bdfb001 *./tests/data/out.yuv stddev: 0.00 PSNR:99.99 bytes:7602176 54cdeaee32d1007666a1e487e739daf6 *./tests/data/a-dv.dv diff --git a/tests/seek.regression.ref b/tests/seek.regression.ref index 21708088e1..4d0581c100 100644 --- a/tests/seek.regression.ref +++ b/tests/seek.regression.ref @@ -2050,47 +2050,47 @@ ret: 0 st: 0 dts:0.000000 pts:0.000000 pos:5660 size:2987 flags:1 ret: 0 st:-1 ts:-1.000000 flags:0 ret: 0 st: 0 dts:0.000000 pts:0.000000 pos:5660 size:2987 flags:1 ret: 0 st:-1 ts:1.894167 flags:1 -ret: 0 st: 0 dts:1.440000 pts:1.440000 pos:46978 size:3663 flags:1 +ret: 0 st: 0 dts:1.440000 pts:1.440000 pos:47000 size:3663 flags:1 ret: 0 st: 0 ts:0.800000 flags:0 -ret: 0 st: 0 dts:0.960000 pts:0.960000 pos:31750 size:3478 flags:1 +ret: 0 st: 0 dts:0.960000 pts:0.960000 pos:31766 size:3478 flags:1 ret:-1 st: 0 ts:-0.320000 flags:1 ret:-1 st:-1 ts:2.576668 flags:0 ret: 0 st:-1 ts:1.470835 flags:1 -ret: 0 st: 0 dts:1.440000 pts:1.440000 pos:46978 size:3663 flags:1 +ret: 0 st: 0 dts:1.440000 pts:1.440000 pos:47000 size:3663 flags:1 ret: 0 st: 0 ts:0.360000 flags:0 -ret: 0 st: 0 dts:0.480000 pts:0.480000 pos:18006 size:3229 flags:1 +ret: 0 st: 0 dts:0.480000 pts:0.480000 pos:18016 size:3229 flags:1 ret:-1 st: 0 ts:-0.760000 flags:1 ret:-1 st:-1 ts:2.153336 flags:0 ret: 0 st:-1 ts:1.047503 flags:1 -ret: 0 st: 0 dts:0.960000 pts:0.960000 pos:31750 size:3478 flags:1 +ret: 0 st: 0 dts:0.960000 pts:0.960000 pos:31766 size:3478 flags:1 ret: 0 st: 0 ts:-0.040000 flags:0 ret: 0 st: 0 dts:0.000000 pts:0.000000 pos:5660 size:2987 flags:1 ret: 0 st: 0 ts:2.840000 flags:1 -ret: 0 st: 0 dts:1.920000 pts:1.920000 pos:63506 size:3635 flags:1 +ret: 0 st: 0 dts:1.920000 pts:1.920000 pos:63536 size:3635 flags:1 ret: 0 st:-1 ts:1.730004 flags:0 -ret: 0 st: 0 dts:1.920000 pts:1.920000 pos:63506 size:3635 flags:1 +ret: 0 st: 0 dts:1.920000 pts:1.920000 pos:63536 size:3635 flags:1 ret: 0 st:-1 ts:0.624171 flags:1 -ret: 0 st: 0 dts:0.480000 pts:0.480000 pos:18006 size:3229 flags:1 +ret: 0 st: 0 dts:0.480000 pts:0.480000 pos:18016 size:3229 flags:1 ret: 0 st: 0 ts:-0.480000 flags:0 ret: 0 st: 0 dts:0.000000 pts:0.000000 pos:5660 size:2987 flags:1 ret: 0 st: 0 ts:2.400000 flags:1 -ret: 0 st: 0 dts:1.920000 pts:1.920000 pos:63506 size:3635 flags:1 +ret: 0 st: 0 dts:1.920000 pts:1.920000 pos:63536 size:3635 flags:1 ret: 0 st:-1 ts:1.306672 flags:0 -ret: 0 st: 0 dts:1.440000 pts:1.440000 pos:46978 size:3663 flags:1 +ret: 0 st: 0 dts:1.440000 pts:1.440000 pos:47000 size:3663 flags:1 ret: 0 st:-1 ts:0.200839 flags:1 ret: 0 st: 0 dts:0.000000 pts:0.000000 pos:5660 size:2987 flags:1 ret: 0 st: 0 ts:-0.920000 flags:0 ret: 0 st: 0 dts:0.000000 pts:0.000000 pos:5660 size:2987 flags:1 ret: 0 st: 0 ts:2.000000 flags:1 -ret: 0 st: 0 dts:1.920000 pts:1.920000 pos:63506 size:3635 flags:1 +ret: 0 st: 0 dts:1.920000 pts:1.920000 pos:63536 size:3635 flags:1 ret: 0 st:-1 ts:0.883340 flags:0 -ret: 0 st: 0 dts:0.960000 pts:0.960000 pos:31750 size:3478 flags:1 +ret: 0 st: 0 dts:0.960000 pts:0.960000 pos:31766 size:3478 flags:1 ret:-1 st:-1 ts:-0.222493 flags:1 ret:-1 st: 0 ts:2.680000 flags:0 ret: 0 st: 0 ts:1.560000 flags:1 -ret: 0 st: 0 dts:1.440000 pts:1.440000 pos:46978 size:3663 flags:1 +ret: 0 st: 0 dts:1.440000 pts:1.440000 pos:47000 size:3663 flags:1 ret: 0 st:-1 ts:0.460008 flags:0 -ret: 0 st: 0 dts:0.480000 pts:0.480000 pos:18006 size:3229 flags:1 +ret: 0 st: 0 dts:0.480000 pts:0.480000 pos:18016 size:3229 flags:1 ret:-1 st:-1 ts:-0.645825 flags:1 ---------------- tests/data/a-snow53.avi @@ -2098,47 +2098,47 @@ ret: 0 st: 0 dts:0.000000 pts:0.000000 pos:5660 size:72476 flags:1 ret: 0 st:-1 ts:-1.000000 flags:0 ret: 0 st: 0 dts:0.000000 pts:0.000000 pos:5660 size:72476 flags:1 ret: 0 st:-1 ts:1.894167 flags:1 -ret: 0 st: 0 dts:1.440000 pts:1.440000 pos:1902764 size:78837 flags:1 +ret: 0 st: 0 dts:1.440000 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