/* * Copyright (C) 2004 Michael Niedermayer <michaelni@gmx.at> * * 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/intmath.h" #include "libavutil/log.h" #include "libavutil/opt.h" #include "libavutil/thread.h" #include "avcodec.h" #include "encode.h" #include "me_cmp.h" #include "snow_dwt.h" #include "internal.h" #include "snow.h" #include "snowdata.h" #include "rangecoder.h" #include "mathops.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; } } } } int ff_snow_get_buffer(SnowContext *s, AVFrame *frame) { int ret, i; int edges_needed = av_codec_is_encoder(s->avctx->codec); frame->width = s->avctx->width ; frame->height = s->avctx->height; if (edges_needed) { frame->width += 2 * EDGE_WIDTH; frame->height += 2 * EDGE_WIDTH; ret = ff_encode_alloc_frame(s->avctx, frame); } else ret = ff_get_buffer(s->avctx, frame, AV_GET_BUFFER_FLAG_REF); if (ret < 0) return ret; if (edges_needed) { for (i = 0; frame->data[i]; i++) { int offset = (EDGE_WIDTH >> (i ? s->chroma_v_shift : 0)) * frame->linesize[i] + (EDGE_WIDTH >> (i ? s->chroma_h_shift : 0)); frame->data[i] += offset; } frame->width = s->avctx->width; frame->height = s->avctx->height; } return 0; } 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= AV_CEIL_RSHIFT(s->avctx->width, LOG2_MB_SIZE); int h= AV_CEIL_RSHIFT(s->avctx->height, LOG2_MB_SIZE); s->b_width = w; s->b_height= h; av_free(s->block); s->block = av_calloc(w * h, sizeof(*s->block) << (s->block_max_depth*2)); if (!s->block) return AVERROR(ENOMEM); return 0; } 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][64*(32+HTAPS_MAX)]; int16_t *tmpI= tmpIt; uint8_t *tmp2= tmp2t[0]; const uint8_t *hpel[11]; av_assert2(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+= 64; 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+= 64; } 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+= 64; } } hpel[ 0]= src; hpel[ 1]= tmp2t[0] + 64*(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] + 64; hpel[10]= hpel[8] + 1; #define MC_STRIDE(x) (needs[x] ? 64 : stride) if(b==15){ int dxy = dx / 8 + dy / 8 * 4; const uint8_t *src1 = hpel[dxy ]; const uint8_t *src2 = hpel[dxy + 1]; const uint8_t *src3 = hpel[dxy + 4]; const uint8_t *src4 = hpel[dxy + 5]; int stride1 = MC_STRIDE(dxy); int stride2 = MC_STRIDE(dxy + 1); int stride3 = MC_STRIDE(dxy + 4); int stride4 = MC_STRIDE(dxy + 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+=stride1; src2+=stride2; src3+=stride3; src4+=stride4; dst +=stride; } }else{ const uint8_t *src1= hpel[l]; const uint8_t *src2= hpel[r]; int stride1 = MC_STRIDE(l); int stride2 = MC_STRIDE(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+=stride1; src2+=stride2; dst +=stride; } } } void ff_snow_pred_block(SnowContext *s, uint8_t *dst, uint8_t *tmp, ptrdiff_t stride, int sx, int sy, int b_w, int b_h, const 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{ const uint8_t *src = s->last_picture[block->ref]->data[plane_index]; const int scale= plane_index ? (2*s->mv_scale)>>s->chroma_h_shift : 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 >= FFMAX(w - b_w - (HTAPS_MAX-2), 0) || (unsigned)sy >= FFMAX(h - b_h - (HTAPS_MAX-2), 0)){ s->vdsp.emulated_edge_mc(tmp + MB_SIZE, src, stride, stride, b_w+HTAPS_MAX-1, b_h+HTAPS_MAX-1, sx, sy, w, h); src= tmp + MB_SIZE; } av_assert2(s->chroma_h_shift == s->chroma_v_shift); // only one mv_scale av_assert2((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)) || b_w == 1 || b_h == 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->h264qpel.put_h264_qpel_pixels_tab[0][dy+(dx>>2)](dst + y*stride, src + 3 + (y+3)*stride,stride); s->h264qpel.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->h264qpel.put_h264_qpel_pixels_tab[tab_index ][dy+(dx>>2)](dst,src + 3 + 3*stride,stride); else if(b_w==2*b_h){ s->h264qpel.put_h264_qpel_pixels_tab[tab_index+1][dy+(dx>>2)](dst ,src + 3 + 3*stride,stride); s->h264qpel.put_h264_qpel_pixels_tab[tab_index+1][dy+(dx>>2)](dst+b_h,src + 3 + b_h + 3*stride,stride); }else{ av_assert2(2*b_w==b_h); s->h264qpel.put_h264_qpel_pixels_tab[tab_index ][dy+(dx>>2)](dst ,src + 3 + 3*stride ,stride); s->h264qpel.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, ptrdiff_t stride, int h){\ av_assert2(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) static av_cold void snow_static_init(void) { for (int i = 0; i < MAX_REF_FRAMES; i++) for (int j = 0; j < MAX_REF_FRAMES; j++) ff_scale_mv_ref[i][j] = 256 * (i + 1) / (j + 1); } av_cold int ff_snow_common_init(AVCodecContext *avctx){ static AVOnce init_static_once = AV_ONCE_INIT; SnowContext *s = avctx->priv_data; int width, height; int i; s->avctx= avctx; s->max_ref_frames=1; //just make sure it's not an invalid value in case of no initial keyframe s->spatial_decomposition_count = 1; ff_me_cmp_init(&s->mecc, avctx); ff_hpeldsp_init(&s->hdsp, avctx->flags); ff_videodsp_init(&s->vdsp, 8); ff_dwt_init(&s->dwt); ff_h264qpel_init(&s->h264qpel, 8); #define mcf(dx,dy)\ s->qdsp.put_qpel_pixels_tab [0][dy+dx/4]=\ s->qdsp.put_no_rnd_qpel_pixels_tab[0][dy+dx/4]=\ s->h264qpel.put_h264_qpel_pixels_tab[0][dy+dx/4];\ s->qdsp.put_qpel_pixels_tab [1][dy+dx/4]=\ s->qdsp.put_no_rnd_qpel_pixels_tab[1][dy+dx/4]=\ s->h264qpel.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->hdsp.put_pixels_tab [0][dy/4+dx/8]=\ s->hdsp.put_no_rnd_pixels_tab[0][dy/4+dx/8]=\ mc_block_hpel ## dx ## dy ## 16;\ s->hdsp.put_pixels_tab [1][dy/4+dx/8]=\ s->hdsp.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) // dec += FFMAX(s->chroma_h_shift, s->chroma_v_shift); width= s->avctx->width; height= s->avctx->height; if (!FF_ALLOCZ_TYPED_ARRAY(s->spatial_idwt_buffer, width * height) || !FF_ALLOCZ_TYPED_ARRAY(s->spatial_dwt_buffer, width * height) || //FIXME this does not belong here !FF_ALLOCZ_TYPED_ARRAY(s->temp_dwt_buffer, width) || !FF_ALLOCZ_TYPED_ARRAY(s->temp_idwt_buffer, width) || !FF_ALLOCZ_TYPED_ARRAY(s->run_buffer, ((width + 1) >> 1) * ((height + 1) >> 1))) return AVERROR(ENOMEM); for(i=0; i<MAX_REF_FRAMES; i++) { s->last_picture[i] = av_frame_alloc(); if (!s->last_picture[i]) return AVERROR(ENOMEM); } s->mconly_picture = av_frame_alloc(); s->current_picture = av_frame_alloc(); if (!s->mconly_picture || !s->current_picture) return AVERROR(ENOMEM); ff_thread_once(&init_static_once, snow_static_init); return 0; } int ff_snow_common_init_after_header(AVCodecContext *avctx) { SnowContext *s = avctx->priv_data; int plane_index, level, orientation; int ret, emu_buf_size; if(!s->scratchbuf) { if (av_codec_is_decoder(avctx->codec)) { if ((ret = ff_get_buffer(s->avctx, s->mconly_picture, AV_GET_BUFFER_FLAG_REF)) < 0) return ret; } emu_buf_size = FFMAX(s->mconly_picture->linesize[0], 2*avctx->width+256) * (2 * MB_SIZE + HTAPS_MAX - 1); if (!FF_ALLOCZ_TYPED_ARRAY(s->scratchbuf, FFMAX(s->mconly_picture->linesize[0], 2*avctx->width+256) * 7 * MB_SIZE) || !FF_ALLOCZ_TYPED_ARRAY(s->emu_edge_buffer, emu_buf_size)) return AVERROR(ENOMEM); } if (av_codec_is_decoder(avctx->codec) && s->mconly_picture->format != avctx->pix_fmt) { av_log(avctx, AV_LOG_ERROR, "pixel format changed\n"); return AVERROR_INVALIDDATA; } for(plane_index=0; plane_index < s->nb_planes; plane_index++){ int w= s->avctx->width; int h= s->avctx->height; if(plane_index){ w = AV_CEIL_RSHIFT(w, s->chroma_h_shift); h = AV_CEIL_RSHIFT(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_calloc((b->width + 1) * b->height + 1, sizeof(*b->x_coeff)); if (!b->x_coeff) return AVERROR(ENOMEM); } w= (w+1)>>1; h= (h+1)>>1; } } return 0; } void ff_snow_release_buffer(AVCodecContext *avctx) { SnowContext *s = avctx->priv_data; if(s->last_picture[s->max_ref_frames-1]->data[0]){ av_frame_unref(s->last_picture[s->max_ref_frames-1]); } } int ff_snow_frame_start(SnowContext *s){ AVFrame *tmp; int i, ret; ff_snow_release_buffer(s->avctx); tmp= s->last_picture[s->max_ref_frames-1]; for(i=s->max_ref_frames-1; i>0; i--) s->last_picture[i] = s->last_picture[i-1]; 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 AVERROR_INVALIDDATA; } } if ((ret = ff_snow_get_buffer(s, s->current_picture)) < 0) return ret; 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->temp_dwt_buffer); av_freep(&s->spatial_idwt_buffer); av_freep(&s->temp_idwt_buffer); av_freep(&s->run_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.sc.obmc_scratchpad); av_freep(&s->block); av_freep(&s->scratchbuf); av_freep(&s->emu_edge_buffer); 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] && s->last_picture[i]->data[0]) { av_assert0(s->last_picture[i]->data[0] != s->current_picture->data[0]); } av_frame_free(&s->last_picture[i]); } for(plane_index=0; plane_index < MAX_PLANES; plane_index++){ for(level=MAX_DECOMPOSITIONS-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); } } } av_frame_free(&s->mconly_picture); av_frame_free(&s->current_picture); }