/* * Copyright (C) 2004 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/intmath.h" #include "libavutil/log.h" #include "libavutil/opt.h" #include "avcodec.h" #include "dsputil.h" #include "dwt.h" #include "snow.h" #include "snowdata.h" #include "rangecoder.h" #include "mathops.h" #include "h263.h" #undef NDEBUG #include <assert.h> void ff_snow_inner_add_yblock(const 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){ int y, x; IDWTELEM * dst; for(y=0; y<b_h; y++){ //FIXME ugly misuse of obmc_stride const uint8_t *obmc1= obmc + y*obmc_stride; const uint8_t *obmc2= obmc1+ (obmc_stride>>1); const uint8_t *obmc3= obmc1+ obmc_stride*(obmc_stride>>1); const uint8_t *obmc4= obmc3+ (obmc_stride>>1); dst = slice_buffer_get_line(sb, src_y + y); for(x=0; x<b_w; x++){ int v= obmc1[x] * block[3][x + y*src_stride] +obmc2[x] * block[2][x + y*src_stride] +obmc3[x] * block[1][x + y*src_stride] +obmc4[x] * block[0][x + y*src_stride]; v <<= 8 - LOG2_OBMC_MAX; if(FRAC_BITS != 8){ v >>= 8 - FRAC_BITS; } if(add){ v += dst[x + src_x]; v = (v + (1<<(FRAC_BITS-1))) >> FRAC_BITS; if(v&(~255)) v= ~(v>>31); dst8[x + y*src_stride] = v; }else{ dst[x + src_x] -= v; } } } } void ff_snow_reset_contexts(SnowContext *s){ //FIXME better initial contexts int plane_index, level, orientation; for(plane_index=0; plane_index<3; plane_index++){ for(level=0; level<MAX_DECOMPOSITIONS; level++){ for(orientation=level ? 1:0; orientation<4; orientation++){ memset(s->plane[plane_index].band[level][orientation].state, MID_STATE, sizeof(s->plane[plane_index].band[level][orientation].state)); } } } memset(s->header_state, MID_STATE, sizeof(s->header_state)); memset(s->block_state, MID_STATE, sizeof(s->block_state)); } int ff_snow_alloc_blocks(SnowContext *s){ int w= -((-s->avctx->width )>>LOG2_MB_SIZE); int h= -((-s->avctx->height)>>LOG2_MB_SIZE); s->b_width = w; s->b_height= h; av_free(s->block); s->block= av_mallocz(w * h * sizeof(BlockNode) << (s->block_max_depth*2)); return 0; } static void init_qexp(void){ int i; double v=128; for(i=0; i<QROOT; i++){ ff_qexp[i]= lrintf(v); v *= pow(2, 1.0 / QROOT); } } static void mc_block(Plane *p, uint8_t *dst, const uint8_t *src, int stride, int b_w, int b_h, int dx, int dy){ static const uint8_t weight[64]={ 8,7,6,5,4,3,2,1, 7,7,0,0,0,0,0,1, 6,0,6,0,0,0,2,0, 5,0,0,5,0,3,0,0, 4,0,0,0,4,0,0,0, 3,0,0,5,0,3,0,0, 2,0,6,0,0,0,2,0, 1,7,0,0,0,0,0,1, }; static const uint8_t brane[256]={ 0x00,0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x11,0x12,0x12,0x12,0x12,0x12,0x12,0x12, 0x04,0x05,0xcc,0xcc,0xcc,0xcc,0xcc,0x41,0x15,0x16,0xcc,0xcc,0xcc,0xcc,0xcc,0x52, 0x04,0xcc,0x05,0xcc,0xcc,0xcc,0x41,0xcc,0x15,0xcc,0x16,0xcc,0xcc,0xcc,0x52,0xcc, 0x04,0xcc,0xcc,0x05,0xcc,0x41,0xcc,0xcc,0x15,0xcc,0xcc,0x16,0xcc,0x52,0xcc,0xcc, 0x04,0xcc,0xcc,0xcc,0x41,0xcc,0xcc,0xcc,0x15,0xcc,0xcc,0xcc,0x16,0xcc,0xcc,0xcc, 0x04,0xcc,0xcc,0x41,0xcc,0x05,0xcc,0xcc,0x15,0xcc,0xcc,0x52,0xcc,0x16,0xcc,0xcc, 0x04,0xcc,0x41,0xcc,0xcc,0xcc,0x05,0xcc,0x15,0xcc,0x52,0xcc,0xcc,0xcc,0x16,0xcc, 0x04,0x41,0xcc,0xcc,0xcc,0xcc,0xcc,0x05,0x15,0x52,0xcc,0xcc,0xcc,0xcc,0xcc,0x16, 0x44,0x45,0x45,0x45,0x45,0x45,0x45,0x45,0x55,0x56,0x56,0x56,0x56,0x56,0x56,0x56, 0x48,0x49,0xcc,0xcc,0xcc,0xcc,0xcc,0x85,0x59,0x5A,0xcc,0xcc,0xcc,0xcc,0xcc,0x96, 0x48,0xcc,0x49,0xcc,0xcc,0xcc,0x85,0xcc,0x59,0xcc,0x5A,0xcc,0xcc,0xcc,0x96,0xcc, 0x48,0xcc,0xcc,0x49,0xcc,0x85,0xcc,0xcc,0x59,0xcc,0xcc,0x5A,0xcc,0x96,0xcc,0xcc, 0x48,0xcc,0xcc,0xcc,0x49,0xcc,0xcc,0xcc,0x59,0xcc,0xcc,0xcc,0x96,0xcc,0xcc,0xcc, 0x48,0xcc,0xcc,0x85,0xcc,0x49,0xcc,0xcc,0x59,0xcc,0xcc,0x96,0xcc,0x5A,0xcc,0xcc, 0x48,0xcc,0x85,0xcc,0xcc,0xcc,0x49,0xcc,0x59,0xcc,0x96,0xcc,0xcc,0xcc,0x5A,0xcc, 0x48,0x85,0xcc,0xcc,0xcc,0xcc,0xcc,0x49,0x59,0x96,0xcc,0xcc,0xcc,0xcc,0xcc,0x5A, }; static const uint8_t needs[16]={ 0,1,0,0, 2,4,2,0, 0,1,0,0, 15 }; int x, y, b, r, l; int16_t tmpIt [64*(32+HTAPS_MAX)]; uint8_t tmp2t[3][stride*(32+HTAPS_MAX)]; int16_t *tmpI= tmpIt; uint8_t *tmp2= tmp2t[0]; const uint8_t *hpel[11]; assert(dx<16 && dy<16); r= brane[dx + 16*dy]&15; l= brane[dx + 16*dy]>>4; b= needs[l] | needs[r]; if(p && !p->diag_mc) b= 15; if(b&5){ for(y=0; y < b_h+HTAPS_MAX-1; y++){ for(x=0; x < b_w; x++){ int a_1=src[x + HTAPS_MAX/2-4]; int a0= src[x + HTAPS_MAX/2-3]; int a1= src[x + HTAPS_MAX/2-2]; int a2= src[x + HTAPS_MAX/2-1]; int a3= src[x + HTAPS_MAX/2+0]; int a4= src[x + HTAPS_MAX/2+1]; int a5= src[x + HTAPS_MAX/2+2]; int a6= src[x + HTAPS_MAX/2+3]; 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; } if(am&(~255)) am= ~(am>>31); tmp2[x]= am; } tmpI+= 64; tmp2+= stride; src += stride; } src -= stride*y; } src += HTAPS_MAX/2 - 1; tmp2= tmp2t[1]; if(b&2){ for(y=0; y < b_h; y++){ for(x=0; x < b_w+1; x++){ int a_1=src[x + (HTAPS_MAX/2-4)*stride]; int a0= src[x + (HTAPS_MAX/2-3)*stride]; int a1= src[x + (HTAPS_MAX/2-2)*stride]; int a2= src[x + (HTAPS_MAX/2-1)*stride]; int a3= src[x + (HTAPS_MAX/2+0)*stride]; int a4= src[x + (HTAPS_MAX/2+1)*stride]; int a5= src[x + (HTAPS_MAX/2+2)*stride]; int a6= src[x + (HTAPS_MAX/2+3)*stride]; 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; if(am&(~255)) am= ~(am>>31); tmp2[x]= am; } src += stride; tmp2+= stride; } src -= stride*y; } src += stride*(HTAPS_MAX/2 - 1); tmp2= tmp2t[2]; tmpI= tmpIt; if(b&4){ for(y=0; y < b_h; y++){ for(x=0; x < b_w; x++){ int a_1=tmpI[x + (HTAPS_MAX/2-4)*64]; int a0= tmpI[x + (HTAPS_MAX/2-3)*64]; int a1= tmpI[x + (HTAPS_MAX/2-2)*64]; int a2= tmpI[x + (HTAPS_MAX/2-1)*64]; int a3= tmpI[x + (HTAPS_MAX/2+0)*64]; int a4= tmpI[x + (HTAPS_MAX/2+1)*64]; int a5= tmpI[x + (HTAPS_MAX/2+2)*64]; int a6= tmpI[x + (HTAPS_MAX/2+3)*64]; 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; } tmpI+= 64; tmp2+= stride; } } hpel[ 0]= src; hpel[ 1]= tmp2t[0] + stride*(HTAPS_MAX/2-1); hpel[ 2]= src + 1; hpel[ 4]= tmp2t[1]; hpel[ 5]= tmp2t[2]; hpel[ 6]= tmp2t[1] + 1; hpel[ 8]= src + stride; hpel[ 9]= hpel[1] + stride; hpel[10]= hpel[8] + 1; if(b==15){ const uint8_t *src1= hpel[dx/8 + dy/8*4 ]; const uint8_t *src2= hpel[dx/8 + dy/8*4+1]; const uint8_t *src3= hpel[dx/8 + dy/8*4+4]; const uint8_t *src4= hpel[dx/8 + dy/8*4+5]; dx&=7; dy&=7; for(y=0; y < b_h; y++){ for(x=0; x < b_w; x++){ dst[x]= ((8-dx)*(8-dy)*src1[x] + dx*(8-dy)*src2[x]+ (8-dx)* dy *src3[x] + dx* dy *src4[x]+32)>>6; } src1+=stride; src2+=stride; src3+=stride; src4+=stride; dst +=stride; } }else{ const uint8_t *src1= hpel[l]; const uint8_t *src2= hpel[r]; int a= weight[((dx&7) + (8*(dy&7)))]; int b= 8-a; for(y=0; y < b_h; y++){ for(x=0; x < b_w; x++){ dst[x]= (a*src1[x] + b*src2[x] + 4)>>3; } src1+=stride; src2+=stride; dst +=stride; } } } void ff_snow_pred_block(SnowContext *s, uint8_t *dst, uint8_t *tmp, int stride, int sx, int sy, int b_w, int b_h, BlockNode *block, int plane_index, int w, int h){ if(block->type & BLOCK_INTRA){ int x, y; const unsigned color = block->color[plane_index]; const unsigned color4 = color*0x01010101; if(b_w==32){ for(y=0; y < b_h; y++){ *(uint32_t*)&dst[0 + y*stride]= color4; *(uint32_t*)&dst[4 + y*stride]= color4; *(uint32_t*)&dst[8 + y*stride]= color4; *(uint32_t*)&dst[12+ y*stride]= color4; *(uint32_t*)&dst[16+ y*stride]= color4; *(uint32_t*)&dst[20+ y*stride]= color4; *(uint32_t*)&dst[24+ y*stride]= color4; *(uint32_t*)&dst[28+ y*stride]= color4; } }else if(b_w==16){ for(y=0; y < b_h; y++){ *(uint32_t*)&dst[0 + y*stride]= color4; *(uint32_t*)&dst[4 + y*stride]= color4; *(uint32_t*)&dst[8 + y*stride]= color4; *(uint32_t*)&dst[12+ y*stride]= color4; } }else if(b_w==8){ for(y=0; y < b_h; y++){ *(uint32_t*)&dst[0 + y*stride]= color4; *(uint32_t*)&dst[4 + y*stride]= color4; } }else if(b_w==4){ for(y=0; y < b_h; y++){ *(uint32_t*)&dst[0 + y*stride]= color4; } }else{ for(y=0; y < b_h; y++){ for(x=0; x < b_w; x++){ dst[x + y*stride]= color; } } } }else{ uint8_t *src= s->last_picture[block->ref].data[plane_index]; const int scale= plane_index ? s->mv_scale : 2*s->mv_scale; int mx= block->mx*scale; int my= block->my*scale; const int dx= mx&15; const int dy= my&15; const int tab_index= 3 - (b_w>>2) + (b_w>>4); sx += (mx>>4) - (HTAPS_MAX/2-1); sy += (my>>4) - (HTAPS_MAX/2-1); src += sx + sy*stride; if( (unsigned)sx >= w - b_w - (HTAPS_MAX-2) || (unsigned)sy >= h - b_h - (HTAPS_MAX-2)){ s->dsp.emulated_edge_mc(tmp + MB_SIZE, src, stride, b_w+HTAPS_MAX-1, b_h+HTAPS_MAX-1, sx, sy, w, h); src= tmp + MB_SIZE; } // assert(b_w == b_h || 2*b_w == b_h || b_w == 2*b_h); // 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)) || !s->plane[plane_index].fast_mc ) mc_block(&s->plane[plane_index], dst, src, stride, b_w, b_h, dx, dy); else if(b_w==32){ int y; for(y=0; y<b_h; y+=16){ 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 + 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 + 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 + 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); } } } #define mca(dx,dy,b_w)\ static void mc_block_hpel ## dx ## dy ## b_w(uint8_t *dst, const uint8_t *src, int stride, int h){\ assert(h==b_w);\ mc_block(NULL, dst, src-(HTAPS_MAX/2-1)-(HTAPS_MAX/2-1)*stride, stride, b_w, b_w, dx, dy);\ } mca( 0, 0,16) mca( 8, 0,16) mca( 0, 8,16) mca( 8, 8,16) mca( 0, 0,8) mca( 8, 0,8) mca( 0, 8,8) mca( 8, 8,8) av_cold int ff_snow_common_init(AVCodecContext *avctx){ SnowContext *s = avctx->priv_data; int width, height; int i, j; s->avctx= avctx; s->max_ref_frames=1; //just make sure its not an invalid value in case of no initial keyframe ff_dsputil_init(&s->dsp, avctx); ff_dwt_init(&s->dwt); #define mcf(dx,dy)\ s->dsp.put_qpel_pixels_tab [0][dy+dx/4]=\ s->dsp.put_no_rnd_qpel_pixels_tab[0][dy+dx/4]=\ s->dsp.put_h264_qpel_pixels_tab[0][dy+dx/4];\ s->dsp.put_qpel_pixels_tab [1][dy+dx/4]=\ s->dsp.put_no_rnd_qpel_pixels_tab[1][dy+dx/4]=\ s->dsp.put_h264_qpel_pixels_tab[1][dy+dx/4]; mcf( 0, 0) mcf( 4, 0) mcf( 8, 0) mcf(12, 0) mcf( 0, 4) mcf( 4, 4) mcf( 8, 4) mcf(12, 4) mcf( 0, 8) mcf( 4, 8) mcf( 8, 8) mcf(12, 8) mcf( 0,12) mcf( 4,12) mcf( 8,12) mcf(12,12) #define mcfh(dx,dy)\ s->dsp.put_pixels_tab [0][dy/4+dx/8]=\ s->dsp.put_no_rnd_pixels_tab[0][dy/4+dx/8]=\ mc_block_hpel ## dx ## dy ## 16;\ s->dsp.put_pixels_tab [1][dy/4+dx/8]=\ s->dsp.put_no_rnd_pixels_tab[1][dy/4+dx/8]=\ mc_block_hpel ## dx ## dy ## 8; mcfh(0, 0) mcfh(8, 0) mcfh(0, 8) mcfh(8, 8) init_qexp(); // dec += FFMAX(s->chroma_h_shift, s->chroma_v_shift); width= s->avctx->width; height= s->avctx->height; s->spatial_idwt_buffer= av_mallocz(width*height*sizeof(IDWTELEM)); s->spatial_dwt_buffer= av_mallocz(width*height*sizeof(DWTELEM)); //FIXME this does not belong here for(i=0; i<MAX_REF_FRAMES; i++) for(j=0; j<MAX_REF_FRAMES; j++) ff_scale_mv_ref[i][j] = 256*(i+1)/(j+1); s->avctx->get_buffer(s->avctx, &s->mconly_picture); s->scratchbuf = av_malloc(s->mconly_picture.linesize[0]*7*MB_SIZE); return 0; } int ff_snow_common_init_after_header(AVCodecContext *avctx) { SnowContext *s = avctx->priv_data; int plane_index, level, orientation; for(plane_index=0; plane_index<3; plane_index++){ int w= s->avctx->width; int h= s->avctx->height; if(plane_index){ w>>= s->chroma_h_shift; h>>= s->chroma_v_shift; } s->plane[plane_index].width = w; s->plane[plane_index].height= h; for(level=s->spatial_decomposition_count-1; level>=0; level--){ for(orientation=level ? 1 : 0; orientation<4; orientation++){ SubBand *b= &s->plane[plane_index].band[level][orientation]; b->buf= s->spatial_dwt_buffer; b->level= level; b->stride= s->plane[plane_index].width << (s->spatial_decomposition_count - level); b->width = (w + !(orientation&1))>>1; b->height= (h + !(orientation>1))>>1; b->stride_line = 1 << (s->spatial_decomposition_count - level); b->buf_x_offset = 0; b->buf_y_offset = 0; if(orientation&1){ b->buf += (w+1)>>1; b->buf_x_offset = (w+1)>>1; } if(orientation>1){ b->buf += b->stride>>1; b->buf_y_offset = b->stride_line >> 1; } b->ibuf= s->spatial_idwt_buffer + (b->buf - s->spatial_dwt_buffer); if(level) b->parent= &s->plane[plane_index].band[level-1][orientation]; //FIXME avoid this realloc av_freep(&b->x_coeff); b->x_coeff=av_mallocz(((b->width+1) * b->height+1)*sizeof(x_and_coeff)); } w= (w+1)>>1; h= (h+1)>>1; } } return 0; } #define USE_HALFPEL_PLANE 0 static void halfpel_interpol(SnowContext *s, uint8_t *halfpel[4][4], AVFrame *frame){ int p,x,y; for(p=0; p<3; p++){ int is_chroma= !!p; int w= s->avctx->width >>is_chroma; int h= s->avctx->height >>is_chroma; int ls= frame->linesize[p]; uint8_t *src= frame->data[p]; halfpel[1][p] = (uint8_t*) av_malloc(ls * (h + 2 * EDGE_WIDTH)) + EDGE_WIDTH * (1 + ls); halfpel[2][p] = (uint8_t*) av_malloc(ls * (h + 2 * EDGE_WIDTH)) + EDGE_WIDTH * (1 + ls); halfpel[3][p] = (uint8_t*) av_malloc(ls * (h + 2 * EDGE_WIDTH)) + EDGE_WIDTH * (1 + ls); halfpel[0][p]= src; for(y=0; y<h; y++){ for(x=0; x<w; x++){ int i= y*ls + x; halfpel[1][p][i]= (20*(src[i] + src[i+1]) - 5*(src[i-1] + src[i+2]) + (src[i-2] + src[i+3]) + 16 )>>5; } } for(y=0; y<h; y++){ for(x=0; x<w; x++){ int i= y*ls + x; halfpel[2][p][i]= (20*(src[i] + src[i+ls]) - 5*(src[i-ls] + src[i+2*ls]) + (src[i-2*ls] + src[i+3*ls]) + 16 )>>5; } } src= halfpel[1][p]; for(y=0; y<h; y++){ for(x=0; x<w; x++){ int i= y*ls + x; halfpel[3][p][i]= (20*(src[i] + src[i+ls]) - 5*(src[i-ls] + src[i+2*ls]) + (src[i-2*ls] + src[i+3*ls]) + 16 )>>5; } } //FIXME border! } } void ff_snow_release_buffer(AVCodecContext *avctx) { SnowContext *s = avctx->priv_data; int i; if(s->last_picture[s->max_ref_frames-1].data[0]){ avctx->release_buffer(avctx, &s->last_picture[s->max_ref_frames-1]); for(i=0; i<9; i++) if(s->halfpel_plane[s->max_ref_frames-1][1+i/3][i%3]) av_free(s->halfpel_plane[s->max_ref_frames-1][1+i/3][i%3] - EDGE_WIDTH*(1+s->current_picture.linesize[i%3])); } } int ff_snow_frame_start(SnowContext *s){ AVFrame tmp; int w= s->avctx->width; //FIXME round up to x16 ? int h= s->avctx->height; if (s->current_picture.data[0] && !(s->avctx->flags&CODEC_FLAG_EMU_EDGE)) { s->dsp.draw_edges(s->current_picture.data[0], s->current_picture.linesize[0], w , h , EDGE_WIDTH , EDGE_WIDTH , EDGE_TOP | EDGE_BOTTOM); s->dsp.draw_edges(s->current_picture.data[1], s->current_picture.linesize[1], w>>1, h>>1, EDGE_WIDTH/2, EDGE_WIDTH/2, EDGE_TOP | EDGE_BOTTOM); s->dsp.draw_edges(s->current_picture.data[2], s->current_picture.linesize[2], w>>1, h>>1, EDGE_WIDTH/2, EDGE_WIDTH/2, EDGE_TOP | EDGE_BOTTOM); } ff_snow_release_buffer(s->avctx); tmp= s->last_picture[s->max_ref_frames-1]; memmove(s->last_picture+1, s->last_picture, (s->max_ref_frames-1)*sizeof(AVFrame)); memmove(s->halfpel_plane+1, s->halfpel_plane, (s->max_ref_frames-1)*sizeof(void*)*4*4); if(USE_HALFPEL_PLANE && s->current_picture.data[0]) halfpel_interpol(s, s->halfpel_plane[0], &s->current_picture); s->last_picture[0]= s->current_picture; s->current_picture= tmp; if(s->keyframe){ s->ref_frames= 0; }else{ int i; for(i=0; i<s->max_ref_frames && s->last_picture[i].data[0]; i++) if(i && s->last_picture[i-1].key_frame) break; s->ref_frames= i; if(s->ref_frames==0){ av_log(s->avctx,AV_LOG_ERROR, "No reference frames\n"); return -1; } } s->current_picture.reference= 1; if(s->avctx->get_buffer(s->avctx, &s->current_picture) < 0){ av_log(s->avctx, AV_LOG_ERROR, "get_buffer() failed\n"); return -1; } s->current_picture.key_frame= s->keyframe; return 0; } av_cold void ff_snow_common_end(SnowContext *s) { int plane_index, level, orientation, i; av_freep(&s->spatial_dwt_buffer); av_freep(&s->spatial_idwt_buffer); s->m.me.temp= NULL; av_freep(&s->m.me.scratchpad); av_freep(&s->m.me.map); av_freep(&s->m.me.score_map); av_freep(&s->m.obmc_scratchpad); av_freep(&s->block); av_freep(&s->scratchbuf); for(i=0; i<MAX_REF_FRAMES; i++){ av_freep(&s->ref_mvs[i]); av_freep(&s->ref_scores[i]); if(s->last_picture[i].data[0]) s->avctx->release_buffer(s->avctx, &s->last_picture[i]); } for(plane_index=0; plane_index<3; plane_index++){ for(level=s->spatial_decomposition_count-1; level>=0; level--){ for(orientation=level ? 1 : 0; orientation<4; orientation++){ SubBand *b= &s->plane[plane_index].band[level][orientation]; av_freep(&b->x_coeff); } } } if (s->mconly_picture.data[0]) s->avctx->release_buffer(s->avctx, &s->mconly_picture); if (s->current_picture.data[0]) s->avctx->release_buffer(s->avctx, &s->current_picture); }