From d773d8551500a8e71b1dc3617f96bde45b3b6256 Mon Sep 17 00:00:00 2001 From: Diego Biurrun Date: Fri, 18 Sep 2009 19:45:09 +0000 Subject: [PATCH] Reorder functions so that encoding functions are disabled by the preprocessor. Fixes compilation with disabled optimizations and enabled Snow decoder. Originally committed as revision 19914 to svn://svn.ffmpeg.org/ffmpeg/trunk --- libavcodec/snow.c | 2686 ++++++++++++++++++++++----------------------- 1 file changed, 1342 insertions(+), 1344 deletions(-) diff --git a/libavcodec/snow.c b/libavcodec/snow.c index 7dab31cf30..aeab1dfc75 100644 --- a/libavcodec/snow.c +++ b/libavcodec/snow.c @@ -504,8 +504,6 @@ typedef struct { #define slice_buffer_get_line(slice_buf, line_num) ((slice_buf)->line[line_num] ? (slice_buf)->line[line_num] : slice_buffer_load_line((slice_buf), (line_num))) //#define slice_buffer_get_line(slice_buf, line_num) (slice_buffer_load_line((slice_buf), (line_num))) -static void iterative_me(SnowContext *s); - static void slice_buffer_init(slice_buffer * buf, int line_count, int max_allocated_lines, int line_width, IDWTELEM * base_buffer) { int i; @@ -1279,33 +1277,6 @@ static void ff_spatial_idwt_buffered_init(DWTCompose *cs, slice_buffer * sb, int } } -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, stride<=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, height>>level, stride<width; - const int h= b->height; - int x, y; - - if(1){ - int run=0; - int runs[w*h]; - int run_index=0; - int max_index; - - for(y=0; y 1){ - if(orientation==1) ll= src[y + (x-2)*stride]; - else ll= src[x - 2 + y*stride]; - }*/ - } - if(parent){ - int px= x>>1; - int py= y>>1; - if(pxparent->width && pyparent->height) - p= parent[px + py*2*stride]; - } - if(!(/*ll|*/l|lt|t|rt|p)){ - if(v){ - runs[run_index++]= run; - run=0; - }else{ - run++; - } - } - } - } - max_index= run_index; - runs[run_index++]= run; - run_index=0; - run= runs[run_index++]; - - put_symbol2(&s->c, b->state[30], max_index, 0); - if(run_index <= max_index) - put_symbol2(&s->c, b->state[1], run, 3); - - for(y=0; yc.bytestream_end - s->c.bytestream < w*40){ - av_log(s->avctx, AV_LOG_ERROR, "encoded frame too large\n"); - return -1; - } - for(x=0; x 1){ - if(orientation==1) ll= src[y + (x-2)*stride]; - else ll= src[x - 2 + y*stride]; - }*/ - } - if(parent){ - int px= x>>1; - int py= y>>1; - if(pxparent->width && pyparent->height) - p= parent[px + py*2*stride]; - } - if(/*ll|*/l|lt|t|rt|p){ - int context= av_log2(/*FFABS(ll) + */3*FFABS(l) + FFABS(lt) + 2*FFABS(t) + FFABS(rt) + FFABS(p)); - - put_rac(&s->c, &b->state[0][context], !!v); - }else{ - if(!run){ - run= runs[run_index++]; - - if(run_index <= max_index) - put_symbol2(&s->c, b->state[1], run, 3); - assert(v); - }else{ - run--; - assert(!v); - } - } - if(v){ - int context= av_log2(/*FFABS(ll) + */3*FFABS(l) + FFABS(lt) + 2*FFABS(t) + FFABS(rt) + FFABS(p)); - int l2= 2*FFABS(l) + (l<0); - int t2= 2*FFABS(t) + (t<0); - - put_symbol2(&s->c, b->state[context + 2], FFABS(v)-1, context-4); - put_rac(&s->c, &b->state[0][16 + 1 + 3 + quant3bA[l2&0xFF] + 3*quant3bA[t2&0xFF]], v<0); - } - } - } - } - return 0; -} - -static int encode_subband(SnowContext *s, SubBand *b, IDWTELEM *src, IDWTELEM *parent, int stride, int orientation){ -// encode_subband_qtree(s, b, src, parent, stride, orientation); -// encode_subband_z0run(s, b, src, parent, stride, orientation); - return encode_subband_c0run(s, b, src, parent, stride, orientation); -// encode_subband_dzr(s, b, src, parent, stride, orientation); -} - static inline void unpack_coeffs(SnowContext *s, SubBand *b, SubBand * parent, int orientation){ const int w= b->width; const int h= b->height; @@ -1633,39 +1469,6 @@ static inline void copy_rac_state(RangeCoder *d, RangeCoder *s){ d->bytestream_start= bytestream_start; } -//near copy & paste from dsputil, FIXME -static int pix_sum(uint8_t * pix, int line_size, int w) -{ - int s, i, j; - - s = 0; - for (i = 0; i < w; i++) { - for (j = 0; j < w; j++) { - s += pix[0]; - pix ++; - } - pix += line_size - w; - } - return s; -} - -//near copy & paste from dsputil, FIXME -static int pix_norm1(uint8_t * pix, int line_size, int w) -{ - int s, i, j; - uint32_t *sq = ff_squareTbl + 256; - - s = 0; - for (i = 0; i < w; i++) { - for (j = 0; j < w; j ++) { - s += sq[pix[0]]; - pix ++; - } - pix += line_size - w; - } - return s; -} - static inline void set_blocks(SnowContext *s, int level, int x, int y, int l, int cb, int cr, int mx, int my, int ref, int type){ const int w= s->b_width << s->block_max_depth; const int rem_depth= s->block_max_depth - level; @@ -1720,238 +1523,6 @@ static inline void pred_mv(SnowContext *s, int *mx, int *my, int ref, } } -//FIXME copy&paste -#define P_LEFT P[1] -#define P_TOP P[2] -#define P_TOPRIGHT P[3] -#define P_MEDIAN P[4] -#define P_MV1 P[9] -#define FLAG_QPEL 1 //must be 1 - -static int encode_q_branch(SnowContext *s, int level, int x, int y){ - uint8_t p_buffer[1024]; - uint8_t i_buffer[1024]; - uint8_t p_state[sizeof(s->block_state)]; - uint8_t i_state[sizeof(s->block_state)]; - RangeCoder pc, ic; - uint8_t *pbbak= s->c.bytestream; - uint8_t *pbbak_start= s->c.bytestream_start; - int score, score2, iscore, i_len, p_len, block_s, sum, base_bits; - const int w= s->b_width << s->block_max_depth; - const int h= s->b_height << s->block_max_depth; - const int rem_depth= s->block_max_depth - level; - const int index= (x + y*w) << rem_depth; - const int block_w= 1<<(LOG2_MB_SIZE - level); - int trx= (x+1)<block[index-1] : &null_block; - const BlockNode *top = y ? &s->block[index-w] : &null_block; - const BlockNode *right = trxblock[index+1] : &null_block; - const BlockNode *bottom= tryblock[index+w] : &null_block; - const BlockNode *tl = y && x ? &s->block[index-w-1] : left; - const BlockNode *tr = y && trxblock[index-w+(1<color[0]; - int pcb= left->color[1]; - int pcr= left->color[2]; - int pmx, pmy; - int mx=0, my=0; - int l,cr,cb; - const int stride= s->current_picture.linesize[0]; - const int uvstride= s->current_picture.linesize[1]; - uint8_t *current_data[3]= { s->input_picture.data[0] + (x + y* stride)*block_w, - s->input_picture.data[1] + (x + y*uvstride)*block_w/2, - s->input_picture.data[2] + (x + y*uvstride)*block_w/2}; - int P[10][2]; - int16_t last_mv[3][2]; - int qpel= !!(s->avctx->flags & CODEC_FLAG_QPEL); //unused - const int shift= 1+qpel; - MotionEstContext *c= &s->m.me; - int ref_context= av_log2(2*left->ref) + av_log2(2*top->ref); - int mx_context= av_log2(2*FFABS(left->mx - top->mx)); - int my_context= av_log2(2*FFABS(left->my - top->my)); - int s_context= 2*left->level + 2*top->level + tl->level + tr->level; - int ref, best_ref, ref_score, ref_mx, ref_my; - - assert(sizeof(s->block_state) >= 256); - if(s->keyframe){ - set_blocks(s, level, x, y, pl, pcb, pcr, 0, 0, 0, BLOCK_INTRA); - return 0; - } - -// clip predictors / edge ? - - P_LEFT[0]= left->mx; - P_LEFT[1]= left->my; - P_TOP [0]= top->mx; - P_TOP [1]= top->my; - P_TOPRIGHT[0]= tr->mx; - P_TOPRIGHT[1]= tr->my; - - last_mv[0][0]= s->block[index].mx; - last_mv[0][1]= s->block[index].my; - last_mv[1][0]= right->mx; - last_mv[1][1]= right->my; - last_mv[2][0]= bottom->mx; - last_mv[2][1]= bottom->my; - - s->m.mb_stride=2; - s->m.mb_x= - s->m.mb_y= 0; - c->skip= 0; - - assert(c-> stride == stride); - assert(c->uvstride == uvstride); - - c->penalty_factor = get_penalty_factor(s->lambda, s->lambda2, c->avctx->me_cmp); - c->sub_penalty_factor= get_penalty_factor(s->lambda, s->lambda2, c->avctx->me_sub_cmp); - c->mb_penalty_factor = get_penalty_factor(s->lambda, s->lambda2, c->avctx->mb_cmp); - c->current_mv_penalty= c->mv_penalty[s->m.f_code=1] + MAX_MV; - - c->xmin = - x*block_w - 16+3; - c->ymin = - y*block_w - 16+3; - c->xmax = - (x+1)*block_w + (w<<(LOG2_MB_SIZE - s->block_max_depth)) + 16-3; - c->ymax = - (y+1)*block_w + (h<<(LOG2_MB_SIZE - s->block_max_depth)) + 16-3; - - if(P_LEFT[0] > (c->xmax<xmax< (c->ymax<ymax< (c->xmax<xmax< (c->ymax<ymax<xmin<xmin< (c->xmax<xmax< (c->ymax<ymax<pred_x= P_LEFT[0]; - c->pred_y= P_LEFT[1]; - } else { - c->pred_x = P_MEDIAN[0]; - c->pred_y = P_MEDIAN[1]; - } - - score= INT_MAX; - best_ref= 0; - for(ref=0; refref_frames; ref++){ - init_ref(c, current_data, s->last_picture[ref].data, NULL, block_w*x, block_w*y, 0); - - ref_score= ff_epzs_motion_search(&s->m, &ref_mx, &ref_my, P, 0, /*ref_index*/ 0, last_mv, - (1<<16)>>shift, level-LOG2_MB_SIZE+4, block_w); - - assert(ref_mx >= c->xmin); - assert(ref_mx <= c->xmax); - assert(ref_my >= c->ymin); - assert(ref_my <= c->ymax); - - ref_score= c->sub_motion_search(&s->m, &ref_mx, &ref_my, ref_score, 0, 0, level-LOG2_MB_SIZE+4, block_w); - ref_score= ff_get_mb_score(&s->m, ref_mx, ref_my, 0, 0, level-LOG2_MB_SIZE+4, block_w, 0); - ref_score+= 2*av_log2(2*ref)*c->penalty_factor; - if(s->ref_mvs[ref]){ - s->ref_mvs[ref][index][0]= ref_mx; - s->ref_mvs[ref][index][1]= ref_my; - s->ref_scores[ref][index]= ref_score; - } - if(score > ref_score){ - score= ref_score; - best_ref= ref; - mx= ref_mx; - my= ref_my; - } - } - //FIXME if mb_cmp != SSE then intra cannot be compared currently and mb_penalty vs. lambda2 - - // subpel search - base_bits= get_rac_count(&s->c) - 8*(s->c.bytestream - s->c.bytestream_start); - pc= s->c; - pc.bytestream_start= - pc.bytestream= p_buffer; //FIXME end/start? and at the other stoo - memcpy(p_state, s->block_state, sizeof(s->block_state)); - - if(level!=s->block_max_depth) - put_rac(&pc, &p_state[4 + s_context], 1); - put_rac(&pc, &p_state[1 + left->type + top->type], 0); - if(s->ref_frames > 1) - put_symbol(&pc, &p_state[128 + 1024 + 32*ref_context], best_ref, 0); - pred_mv(s, &pmx, &pmy, best_ref, left, top, tr); - put_symbol(&pc, &p_state[128 + 32*(mx_context + 16*!!best_ref)], mx - pmx, 1); - put_symbol(&pc, &p_state[128 + 32*(my_context + 16*!!best_ref)], my - pmy, 1); - p_len= pc.bytestream - pc.bytestream_start; - score += (s->lambda2*(get_rac_count(&pc)-base_bits))>>FF_LAMBDA_SHIFT; - - block_s= block_w*block_w; - sum = pix_sum(current_data[0], stride, block_w); - l= (sum + block_s/2)/block_s; - iscore = pix_norm1(current_data[0], stride, block_w) - 2*l*sum + l*l*block_s; - - block_s= block_w*block_w>>2; - sum = pix_sum(current_data[1], uvstride, block_w>>1); - cb= (sum + block_s/2)/block_s; -// iscore += pix_norm1(¤t_mb[1][0], uvstride, block_w>>1) - 2*cb*sum + cb*cb*block_s; - sum = pix_sum(current_data[2], uvstride, block_w>>1); - cr= (sum + block_s/2)/block_s; -// iscore += pix_norm1(¤t_mb[2][0], uvstride, block_w>>1) - 2*cr*sum + cr*cr*block_s; - - ic= s->c; - ic.bytestream_start= - ic.bytestream= i_buffer; //FIXME end/start? and at the other stoo - memcpy(i_state, s->block_state, sizeof(s->block_state)); - if(level!=s->block_max_depth) - put_rac(&ic, &i_state[4 + s_context], 1); - put_rac(&ic, &i_state[1 + left->type + top->type], 1); - put_symbol(&ic, &i_state[32], l-pl , 1); - put_symbol(&ic, &i_state[64], cb-pcb, 1); - put_symbol(&ic, &i_state[96], cr-pcr, 1); - i_len= ic.bytestream - ic.bytestream_start; - iscore += (s->lambda2*(get_rac_count(&ic)-base_bits))>>FF_LAMBDA_SHIFT; - -// assert(score==256*256*256*64-1); - assert(iscore < 255*255*256 + s->lambda2*10); - assert(iscore >= 0); - assert(l>=0 && l<=255); - assert(pl>=0 && pl<=255); - - if(level==0){ - int varc= iscore >> 8; - int vard= score >> 8; - if (vard <= 64 || vard < varc) - c->scene_change_score+= ff_sqrt(vard) - ff_sqrt(varc); - else - c->scene_change_score+= s->m.qscale; - } - - if(level!=s->block_max_depth){ - put_rac(&s->c, &s->block_state[4 + s_context], 0); - score2 = encode_q_branch(s, level+1, 2*x+0, 2*y+0); - score2+= encode_q_branch(s, level+1, 2*x+1, 2*y+0); - score2+= encode_q_branch(s, level+1, 2*x+0, 2*y+1); - score2+= encode_q_branch(s, level+1, 2*x+1, 2*y+1); - score2+= s->lambda2>>FF_LAMBDA_SHIFT; //FIXME exact split overhead - - if(score2 < score && score2 < iscore) - return score2; - } - - if(iscore < score){ - pred_mv(s, &pmx, &pmy, 0, left, top, tr); - memcpy(pbbak, i_buffer, i_len); - s->c= ic; - s->c.bytestream_start= pbbak_start; - s->c.bytestream= pbbak + i_len; - set_blocks(s, level, x, y, l, cb, cr, pmx, pmy, 0, BLOCK_INTRA); - memcpy(s->block_state, i_state, sizeof(s->block_state)); - return iscore; - }else{ - memcpy(pbbak, p_buffer, p_len); - s->c= pc; - s->c.bytestream_start= pbbak_start; - s->c.bytestream= pbbak + p_len; - set_blocks(s, level, x, y, pl, pcb, pcr, mx, my, best_ref, 0); - memcpy(s->block_state, p_state, sizeof(s->block_state)); - return score; - } -} - static av_always_inline int same_block(BlockNode *a, BlockNode *b){ if((a->type&BLOCK_INTRA) && (b->type&BLOCK_INTRA)){ return !((a->color[0] - b->color[0]) | (a->color[1] - b->color[1]) | (a->color[2] - b->color[2])); @@ -1960,60 +1531,6 @@ static av_always_inline int same_block(BlockNode *a, BlockNode *b){ } } -static void encode_q_branch2(SnowContext *s, int level, int x, int y){ - const int w= s->b_width << s->block_max_depth; - const int rem_depth= s->block_max_depth - level; - const int index= (x + y*w) << rem_depth; - int trx= (x+1)<block[index]; - const BlockNode *left = x ? &s->block[index-1] : &null_block; - const BlockNode *top = y ? &s->block[index-w] : &null_block; - const BlockNode *tl = y && x ? &s->block[index-w-1] : left; - const BlockNode *tr = y && trxblock[index-w+(1<color[0]; - int pcb= left->color[1]; - int pcr= left->color[2]; - int pmx, pmy; - int ref_context= av_log2(2*left->ref) + av_log2(2*top->ref); - int mx_context= av_log2(2*FFABS(left->mx - top->mx)) + 16*!!b->ref; - int my_context= av_log2(2*FFABS(left->my - top->my)) + 16*!!b->ref; - int s_context= 2*left->level + 2*top->level + tl->level + tr->level; - - if(s->keyframe){ - set_blocks(s, level, x, y, pl, pcb, pcr, 0, 0, 0, BLOCK_INTRA); - return; - } - - if(level!=s->block_max_depth){ - if(same_block(b,b+1) && same_block(b,b+w) && same_block(b,b+w+1)){ - put_rac(&s->c, &s->block_state[4 + s_context], 1); - }else{ - put_rac(&s->c, &s->block_state[4 + s_context], 0); - encode_q_branch2(s, level+1, 2*x+0, 2*y+0); - encode_q_branch2(s, level+1, 2*x+1, 2*y+0); - encode_q_branch2(s, level+1, 2*x+0, 2*y+1); - encode_q_branch2(s, level+1, 2*x+1, 2*y+1); - return; - } - } - if(b->type & BLOCK_INTRA){ - pred_mv(s, &pmx, &pmy, 0, left, top, tr); - put_rac(&s->c, &s->block_state[1 + (left->type&1) + (top->type&1)], 1); - put_symbol(&s->c, &s->block_state[32], b->color[0]-pl , 1); - put_symbol(&s->c, &s->block_state[64], b->color[1]-pcb, 1); - put_symbol(&s->c, &s->block_state[96], b->color[2]-pcr, 1); - set_blocks(s, level, x, y, b->color[0], b->color[1], b->color[2], pmx, pmy, 0, BLOCK_INTRA); - }else{ - pred_mv(s, &pmx, &pmy, b->ref, left, top, tr); - put_rac(&s->c, &s->block_state[1 + (left->type&1) + (top->type&1)], 0); - if(s->ref_frames > 1) - put_symbol(&s->c, &s->block_state[128 + 1024 + 32*ref_context], b->ref, 0); - put_symbol(&s->c, &s->block_state[128 + 32*mx_context], b->mx - pmx, 1); - put_symbol(&s->c, &s->block_state[128 + 32*my_context], b->my - pmy, 1); - set_blocks(s, level, x, y, pl, pcb, pcr, b->mx, b->my, b->ref, 0); - } -} - static void decode_q_branch(SnowContext *s, int level, int x, int y){ const int w= s->b_width << s->block_max_depth; const int rem_depth= s->block_max_depth - level; @@ -2063,28 +1580,6 @@ static void decode_q_branch(SnowContext *s, int level, int x, int y){ } } -static void encode_blocks(SnowContext *s, int search){ - int x, y; - int w= s->b_width; - int h= s->b_height; - - if(s->avctx->me_method == ME_ITER && !s->keyframe && search) - iterative_me(s); - - for(y=0; yc.bytestream_end - s->c.bytestream < w*MB_SIZE*MB_SIZE*3){ //FIXME nicer limit - av_log(s->avctx, AV_LOG_ERROR, "encoded frame too large\n"); - return; - } - for(x=0; xavctx->me_method == ME_ITER || !search) - encode_q_branch2(s, 0, x, y); - else - encode_q_branch (s, 0, x, y); - } - } -} - static void decode_blocks(SnowContext *s){ int x, y; int w= s->b_width; @@ -2681,6 +2176,1164 @@ static av_always_inline void predict_plane(SnowContext *s, IDWTELEM *buf, int pl predict_slice(s, buf, plane_index, add, mb_y); } +static void dequantize_slice_buffered(SnowContext *s, slice_buffer * sb, SubBand *b, IDWTELEM *src, int stride, int start_y, int end_y){ + const int w= b->width; + const int qlog= av_clip(s->qlog + b->qlog, 0, QROOT*16); + const int qmul= qexp[qlog&(QROOT-1)]<<(qlog>>QSHIFT); + const int qadd= (s->qbias*qmul)>>QBIAS_SHIFT; + int x,y; + + if(s->qlog == LOSSLESS_QLOG) return; + + for(y=start_y; ystride_line) + b->buf_y_offset) + b->buf_x_offset; + for(x=0; x>(QEXPSHIFT)); //FIXME try different bias + }else if(i>0){ + line[x]= (( i*qmul + qadd)>>(QEXPSHIFT)); + } + } + } +} + +static void correlate_slice_buffered(SnowContext *s, slice_buffer * sb, SubBand *b, IDWTELEM *src, int stride, int inverse, int use_median, int start_y, int end_y){ + const int w= b->width; + int x,y; + + IDWTELEM * line=0; // silence silly "could be used without having been initialized" warning + IDWTELEM * prev; + + if (start_y != 0) + line = slice_buffer_get_line(sb, ((start_y - 1) * b->stride_line) + b->buf_y_offset) + b->buf_x_offset; + + for(y=start_y; ystride_line) + b->buf_y_offset) + b->buf_x_offset; + for(x=0; xspatial_decomposition_count; level++){ + for(orientation=level ? 1:0; orientation<4; orientation++){ + int q; + if (plane_index==2) q= s->plane[1].band[level][orientation].qlog; + else if(orientation==2) q= s->plane[plane_index].band[level][1].qlog; + else q= get_symbol(&s->c, s->header_state, 1); + s->plane[plane_index].band[level][orientation].qlog= q; + } + } + } +} + +#define GET_S(dst, check) \ + tmp= get_symbol(&s->c, s->header_state, 0);\ + if(!(check)){\ + av_log(s->avctx, AV_LOG_ERROR, "Error " #dst " is %d\n", tmp);\ + return -1;\ + }\ + dst= tmp; + +static int decode_header(SnowContext *s){ + int plane_index, tmp; + uint8_t kstate[32]; + + memset(kstate, MID_STATE, sizeof(kstate)); + + s->keyframe= get_rac(&s->c, kstate); + if(s->keyframe || s->always_reset){ + reset_contexts(s); + s->spatial_decomposition_type= + s->qlog= + s->qbias= + s->mv_scale= + s->block_max_depth= 0; + } + if(s->keyframe){ + GET_S(s->version, tmp <= 0U) + s->always_reset= get_rac(&s->c, s->header_state); + s->temporal_decomposition_type= get_symbol(&s->c, s->header_state, 0); + s->temporal_decomposition_count= get_symbol(&s->c, s->header_state, 0); + GET_S(s->spatial_decomposition_count, 0 < tmp && tmp <= MAX_DECOMPOSITIONS) + s->colorspace_type= get_symbol(&s->c, s->header_state, 0); + s->chroma_h_shift= get_symbol(&s->c, s->header_state, 0); + s->chroma_v_shift= get_symbol(&s->c, s->header_state, 0); + s->spatial_scalability= get_rac(&s->c, s->header_state); +// s->rate_scalability= get_rac(&s->c, s->header_state); + GET_S(s->max_ref_frames, tmp < (unsigned)MAX_REF_FRAMES) + s->max_ref_frames++; + + decode_qlogs(s); + } + + if(!s->keyframe){ + if(get_rac(&s->c, s->header_state)){ + for(plane_index=0; plane_index<2; plane_index++){ + int htaps, i, sum=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_MAX || 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)); + } + if(get_rac(&s->c, s->header_state)){ + GET_S(s->spatial_decomposition_count, 0 < tmp && tmp <= MAX_DECOMPOSITIONS) + decode_qlogs(s); + } + } + + s->spatial_decomposition_type+= get_symbol(&s->c, s->header_state, 1); + if(s->spatial_decomposition_type > 1U){ + av_log(s->avctx, AV_LOG_ERROR, "spatial_decomposition_type %d not supported", s->spatial_decomposition_type); + return -1; + } + if(FFMIN(s->avctx-> width>>s->chroma_h_shift, + s->avctx->height>>s->chroma_v_shift) >> (s->spatial_decomposition_count-1) <= 0){ + av_log(s->avctx, AV_LOG_ERROR, "spatial_decomposition_count %d too large for size", s->spatial_decomposition_count); + return -1; + } + + s->qlog += get_symbol(&s->c, s->header_state, 1); + s->mv_scale += get_symbol(&s->c, s->header_state, 1); + s->qbias += get_symbol(&s->c, s->header_state, 1); + s->block_max_depth+= get_symbol(&s->c, s->header_state, 1); + if(s->block_max_depth > 1 || s->block_max_depth < 0){ + av_log(s->avctx, AV_LOG_ERROR, "block_max_depth= %d is too large", s->block_max_depth); + s->block_max_depth= 0; + return -1; + } + + return 0; +} + +static void init_qexp(void){ + int i; + double v=128; + + for(i=0; ipriv_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 + + dsputil_init(&s->dsp, avctx); + +#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) + + if(!qexp[0]) + 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; iavctx->get_buffer(s->avctx, &s->mconly_picture); + s->scratchbuf = av_malloc(s->mconly_picture.linesize[0]*7*MB_SIZE); + + return 0; +} + +static int 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 QUANTIZE2 0 + +#if QUANTIZE2==1 +#define Q2_STEP 8 + +static void find_sse(SnowContext *s, Plane *p, int *score, int score_stride, IDWTELEM *r0, IDWTELEM *r1, int level, int orientation){ + SubBand *b= &p->band[level][orientation]; + int x, y; + int xo=0; + int yo=0; + int step= 1 << (s->spatial_decomposition_count - level); + + if(orientation&1) + xo= step>>1; + if(orientation&2) + yo= step>>1; + + //FIXME bias for nonzero ? + //FIXME optimize + memset(score, 0, sizeof(*score)*score_stride*((p->height + Q2_STEP-1)/Q2_STEP)); + for(y=0; yheight; y++){ + for(x=0; xwidth; x++){ + int sx= (x-xo + step/2) / step / Q2_STEP; + int sy= (y-yo + step/2) / step / Q2_STEP; + int v= r0[x + y*p->width] - r1[x + y*p->width]; + assert(sx>=0 && sy>=0 && sx < score_stride); + v= ((v+8)>>4)<<4; + score[sx + sy*score_stride] += v*v; + assert(score[sx + sy*score_stride] >= 0); + } + } +} + +static void dequantize_all(SnowContext *s, Plane *p, IDWTELEM *buffer, int width, int height){ + int level, orientation; + + for(level=0; levelspatial_decomposition_count; level++){ + for(orientation=level ? 1 : 0; orientation<4; orientation++){ + SubBand *b= &p->band[level][orientation]; + IDWTELEM *dst= buffer + (b->ibuf - s->spatial_idwt_buffer); + + dequantize(s, b, dst, b->stride); + } + } +} + +static void dwt_quantize(SnowContext *s, Plane *p, DWTELEM *buffer, int width, int height, int stride, int type){ + int level, orientation, ys, xs, x, y, pass; + IDWTELEM best_dequant[height * stride]; + IDWTELEM idwt2_buffer[height * stride]; + const int score_stride= (width + 10)/Q2_STEP; + int best_score[(width + 10)/Q2_STEP * (height + 10)/Q2_STEP]; //FIXME size + int score[(width + 10)/Q2_STEP * (height + 10)/Q2_STEP]; //FIXME size + int threshold= (s->m.lambda * s->m.lambda) >> 6; + + //FIXME pass the copy cleanly ? + +// memcpy(dwt_buffer, buffer, height * stride * sizeof(DWTELEM)); + ff_spatial_dwt(buffer, width, height, stride, type, s->spatial_decomposition_count); + + for(level=0; levelspatial_decomposition_count; level++){ + for(orientation=level ? 1 : 0; orientation<4; orientation++){ + SubBand *b= &p->band[level][orientation]; + IDWTELEM *dst= best_dequant + (b->ibuf - s->spatial_idwt_buffer); + DWTELEM *src= buffer + (b-> buf - s->spatial_dwt_buffer); + assert(src == b->buf); // code does not depend on this but it is true currently + + quantize(s, b, dst, src, b->stride, s->qbias); + } + } + for(pass=0; pass<1; pass++){ + if(s->qbias == 0) //keyframe + continue; + for(level=0; levelspatial_decomposition_count; level++){ + for(orientation=level ? 1 : 0; orientation<4; orientation++){ + SubBand *b= &p->band[level][orientation]; + IDWTELEM *dst= idwt2_buffer + (b->ibuf - s->spatial_idwt_buffer); + IDWTELEM *best_dst= best_dequant + (b->ibuf - s->spatial_idwt_buffer); + + for(ys= 0; ysspatial_decomposition_count); + find_sse(s, p, best_score, score_stride, idwt2_buffer, s->spatial_idwt_buffer, level, orientation); + memcpy(idwt2_buffer, best_dequant, height * stride * sizeof(IDWTELEM)); + for(y=ys; yheight; y+= Q2_STEP){ + for(x=xs; xwidth; x+= Q2_STEP){ + if(dst[x + y*b->stride]<0) dst[x + y*b->stride]++; + if(dst[x + y*b->stride]>0) dst[x + y*b->stride]--; + //FIXME try more than just -- + } + } + dequantize_all(s, p, idwt2_buffer, width, height); + ff_spatial_idwt(idwt2_buffer, width, height, stride, type, s->spatial_decomposition_count); + find_sse(s, p, score, score_stride, idwt2_buffer, s->spatial_idwt_buffer, level, orientation); + for(y=ys; yheight; y+= Q2_STEP){ + for(x=xs; xwidth; x+= Q2_STEP){ + int score_idx= x/Q2_STEP + (y/Q2_STEP)*score_stride; + if(score[score_idx] <= best_score[score_idx] + threshold){ + best_score[score_idx]= score[score_idx]; + if(best_dst[x + y*b->stride]<0) best_dst[x + y*b->stride]++; + if(best_dst[x + y*b->stride]>0) best_dst[x + y*b->stride]--; + //FIXME copy instead + } + } + } + } + } + } + } + } + memcpy(s->spatial_idwt_buffer, best_dequant, height * stride * sizeof(IDWTELEM)); //FIXME work with that directly instead of copy at the end +} + +#endif /* QUANTIZE2==1 */ + +#define USE_HALFPEL_PLANE 0 + +static void halfpel_interpol(SnowContext *s, uint8_t *halfpel[4][4], AVFrame *frame){ + int p,x,y; + + assert(!(s->avctx->flags & CODEC_FLAG_EMU_EDGE)); + + 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>5; + } + } + for(y=0; y>5; + } + } + src= halfpel[1][p]; + for(y=0; y>5; + } + } + +//FIXME border! + } +} + +static void 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])); + } +} + +static int 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->dsp.draw_edges(s->current_picture.data[0], s->current_picture.linesize[0], w , h , EDGE_WIDTH ); + s->dsp.draw_edges(s->current_picture.data[1], s->current_picture.linesize[1], w>>1, h>>1, EDGE_WIDTH/2); + s->dsp.draw_edges(s->current_picture.data[2], s->current_picture.linesize[2], w>>1, h>>1, EDGE_WIDTH/2); + } + + 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; imax_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; +} + +static av_cold void 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; iref_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); + } + } + } +} + +static av_cold int decode_init(AVCodecContext *avctx) +{ + avctx->pix_fmt= PIX_FMT_YUV420P; + + common_init(avctx); + + return 0; +} + +static int decode_frame(AVCodecContext *avctx, void *data, int *data_size, AVPacket *avpkt){ + const uint8_t *buf = avpkt->data; + int buf_size = avpkt->size; + SnowContext *s = avctx->priv_data; + RangeCoder * const c= &s->c; + int bytes_read; + AVFrame *picture = data; + int level, orientation, plane_index; + + ff_init_range_decoder(c, buf, buf_size); + ff_build_rac_states(c, 0.05*(1LL<<32), 256-8); + + s->current_picture.pict_type= FF_I_TYPE; //FIXME I vs. P + if(decode_header(s)<0) + return -1; + common_init_after_header(avctx); + + // realloc slice buffer for the case that spatial_decomposition_count changed + slice_buffer_destroy(&s->sb); + slice_buffer_init(&s->sb, s->plane[0].height, (MB_SIZE >> s->block_max_depth) + s->spatial_decomposition_count * 8 + 1, s->plane[0].width, s->spatial_idwt_buffer); + + 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; + } + + alloc_blocks(s); + + if(frame_start(s) < 0) + return -1; + //keyframe flag duplication mess FIXME + if(avctx->debug&FF_DEBUG_PICT_INFO) + av_log(avctx, AV_LOG_ERROR, "keyframe:%d qlog:%d\n", s->keyframe, s->qlog); + + decode_blocks(s); + + for(plane_index=0; plane_index<3; plane_index++){ + Plane *p= &s->plane[plane_index]; + int w= p->width; + int h= p->height; + int x, y; + int decode_state[MAX_DECOMPOSITIONS][4][1]; /* Stored state info for unpack_coeffs. 1 variable per instance. */ + + if(s->avctx->debug&2048){ + memset(s->spatial_dwt_buffer, 0, sizeof(DWTELEM)*w*h); + predict_plane(s, s->spatial_idwt_buffer, plane_index, 1); + + for(y=0; ycurrent_picture.data[plane_index][y*s->current_picture.linesize[plane_index] + x]; + s->mconly_picture.data[plane_index][y*s->mconly_picture.linesize[plane_index] + x]= v; + } + } + } + + { + for(level=0; levelspatial_decomposition_count; level++){ + for(orientation=level ? 1 : 0; orientation<4; orientation++){ + SubBand *b= &p->band[level][orientation]; + unpack_coeffs(s, b, b->parent, orientation); + } + } + } + + { + const int mb_h= s->b_height << s->block_max_depth; + const int block_size = MB_SIZE >> s->block_max_depth; + const int block_w = plane_index ? block_size/2 : block_size; + int mb_y; + DWTCompose cs[MAX_DECOMPOSITIONS]; + int yd=0, yq=0; + int y; + int end_y; + + ff_spatial_idwt_buffered_init(cs, &s->sb, w, h, 1, s->spatial_decomposition_type, s->spatial_decomposition_count); + for(mb_y=0; mb_y<=mb_h; mb_y++){ + + int slice_starty = block_w*mb_y; + int slice_h = block_w*(mb_y+1); + if (!(s->keyframe || s->avctx->debug&512)){ + slice_starty = FFMAX(0, slice_starty - (block_w >> 1)); + slice_h -= (block_w >> 1); + } + + for(level=0; levelspatial_decomposition_count; level++){ + for(orientation=level ? 1 : 0; orientation<4; orientation++){ + SubBand *b= &p->band[level][orientation]; + int start_y; + int end_y; + int our_mb_start = mb_y; + int our_mb_end = (mb_y + 1); + const int extra= 3; + start_y = (mb_y ? ((block_w * our_mb_start) >> (s->spatial_decomposition_count - level)) + s->spatial_decomposition_count - level + extra: 0); + end_y = (((block_w * our_mb_end) >> (s->spatial_decomposition_count - level)) + s->spatial_decomposition_count - level + extra); + if (!(s->keyframe || s->avctx->debug&512)){ + start_y = FFMAX(0, start_y - (block_w >> (1+s->spatial_decomposition_count - level))); + end_y = FFMAX(0, end_y - (block_w >> (1+s->spatial_decomposition_count - level))); + } + start_y = FFMIN(b->height, start_y); + end_y = FFMIN(b->height, end_y); + + if (start_y != end_y){ + if (orientation == 0){ + SubBand * correlate_band = &p->band[0][0]; + int correlate_end_y = FFMIN(b->height, end_y + 1); + int correlate_start_y = FFMIN(b->height, (start_y ? start_y + 1 : 0)); + decode_subband_slice_buffered(s, correlate_band, &s->sb, correlate_start_y, correlate_end_y, decode_state[0][0]); + correlate_slice_buffered(s, &s->sb, correlate_band, correlate_band->ibuf, correlate_band->stride, 1, 0, correlate_start_y, correlate_end_y); + dequantize_slice_buffered(s, &s->sb, correlate_band, correlate_band->ibuf, correlate_band->stride, start_y, end_y); + } + else + decode_subband_slice_buffered(s, b, &s->sb, start_y, end_y, decode_state[level][orientation]); + } + } + } + + for(; yddsp, cs, &s->sb, w, h, 1, s->spatial_decomposition_type, s->spatial_decomposition_count, yd); + } + + if(s->qlog == LOSSLESS_QLOG){ + for(; yqsb, yq); + for(x=0; xsb, s->spatial_idwt_buffer, plane_index, 1, mb_y); + + y = FFMIN(p->height, slice_starty); + end_y = FFMIN(p->height, slice_h); + while(y < end_y) + slice_buffer_release(&s->sb, y++); + } + + slice_buffer_flush(&s->sb); + } + + } + + emms_c(); + + release_buffer(avctx); + + if(!(s->avctx->debug&2048)) + *picture= s->current_picture; + else + *picture= s->mconly_picture; + + *data_size = sizeof(AVFrame); + + bytes_read= c->bytestream - c->bytestream_start; + if(bytes_read ==0) av_log(s->avctx, AV_LOG_ERROR, "error at end of frame\n"); //FIXME + + return bytes_read; +} + +static av_cold int decode_end(AVCodecContext *avctx) +{ + SnowContext *s = avctx->priv_data; + + slice_buffer_destroy(&s->sb); + + common_end(s); + + return 0; +} + +AVCodec snow_decoder = { + "snow", + CODEC_TYPE_VIDEO, + CODEC_ID_SNOW, + sizeof(SnowContext), + decode_init, + NULL, + decode_end, + decode_frame, + CODEC_CAP_DR1 /*| CODEC_CAP_DRAW_HORIZ_BAND*/, + NULL, + .long_name = NULL_IF_CONFIG_SMALL("Snow"), +}; + +#if CONFIG_SNOW_ENCODER +static av_cold int encode_init(AVCodecContext *avctx) +{ + SnowContext *s = avctx->priv_data; + int plane_index; + + if(avctx->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL){ + av_log(avctx, AV_LOG_ERROR, "This codec is under development, files encoded with it may not be decodable with future versions!!!\n" + "Use vstrict=-2 / -strict -2 to use it anyway.\n"); + return -1; + } + + if(avctx->prediction_method == DWT_97 + && (avctx->flags & CODEC_FLAG_QSCALE) + && avctx->global_quality == 0){ + av_log(avctx, AV_LOG_ERROR, "The 9/7 wavelet is incompatible with lossless mode.\n"); + return -1; + } + + s->spatial_decomposition_type= avctx->prediction_method; //FIXME add decorrelator type r transform_type + + s->mv_scale = (avctx->flags & CODEC_FLAG_QPEL) ? 2 : 4; + s->block_max_depth= (avctx->flags & CODEC_FLAG_4MV ) ? 1 : 0; + + for(plane_index=0; plane_index<3; plane_index++){ + 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; + } + + common_init(avctx); + alloc_blocks(s); + + s->version=0; + + s->m.avctx = avctx; + s->m.flags = avctx->flags; + s->m.bit_rate= avctx->bit_rate; + + s->m.me.temp = + s->m.me.scratchpad= av_mallocz((avctx->width+64)*2*16*2*sizeof(uint8_t)); + s->m.me.map = av_mallocz(ME_MAP_SIZE*sizeof(uint32_t)); + s->m.me.score_map = av_mallocz(ME_MAP_SIZE*sizeof(uint32_t)); + s->m.obmc_scratchpad= av_mallocz(MB_SIZE*MB_SIZE*12*sizeof(uint32_t)); + h263_encode_init(&s->m); //mv_penalty + + s->max_ref_frames = FFMAX(FFMIN(avctx->refs, MAX_REF_FRAMES), 1); + + if(avctx->flags&CODEC_FLAG_PASS1){ + if(!avctx->stats_out) + avctx->stats_out = av_mallocz(256); + } + if((avctx->flags&CODEC_FLAG_PASS2) || !(avctx->flags&CODEC_FLAG_QSCALE)){ + if(ff_rate_control_init(&s->m) < 0) + return -1; + } + s->pass1_rc= !(avctx->flags & (CODEC_FLAG_QSCALE|CODEC_FLAG_PASS2)); + + avctx->coded_frame= &s->current_picture; + switch(avctx->pix_fmt){ +// case PIX_FMT_YUV444P: +// case PIX_FMT_YUV422P: + case PIX_FMT_YUV420P: + case PIX_FMT_GRAY8: +// case PIX_FMT_YUV411P: +// case PIX_FMT_YUV410P: + s->colorspace_type= 0; + break; +/* case PIX_FMT_RGB32: + s->colorspace= 1; + break;*/ + default: + av_log(avctx, AV_LOG_ERROR, "pixel format not supported\n"); + return -1; + } +// avcodec_get_chroma_sub_sample(avctx->pix_fmt, &s->chroma_h_shift, &s->chroma_v_shift); + s->chroma_h_shift= 1; + s->chroma_v_shift= 1; + + ff_set_cmp(&s->dsp, s->dsp.me_cmp, s->avctx->me_cmp); + ff_set_cmp(&s->dsp, s->dsp.me_sub_cmp, s->avctx->me_sub_cmp); + + s->avctx->get_buffer(s->avctx, &s->input_picture); + + if(s->avctx->me_method == ME_ITER){ + int i; + int size= s->b_width * s->b_height << 2*s->block_max_depth; + for(i=0; imax_ref_frames; i++){ + s->ref_mvs[i]= av_mallocz(size*sizeof(int16_t[2])); + s->ref_scores[i]= av_mallocz(size*sizeof(uint32_t)); + } + } + + return 0; +} + +//near copy & paste from dsputil, FIXME +static int pix_sum(uint8_t * pix, int line_size, int w) +{ + int s, i, j; + + s = 0; + for (i = 0; i < w; i++) { + for (j = 0; j < w; j++) { + s += pix[0]; + pix ++; + } + pix += line_size - w; + } + return s; +} + +//near copy & paste from dsputil, FIXME +static int pix_norm1(uint8_t * pix, int line_size, int w) +{ + int s, i, j; + uint32_t *sq = ff_squareTbl + 256; + + s = 0; + for (i = 0; i < w; i++) { + for (j = 0; j < w; j ++) { + s += sq[pix[0]]; + pix ++; + } + pix += line_size - w; + } + return s; +} + +//FIXME copy&paste +#define P_LEFT P[1] +#define P_TOP P[2] +#define P_TOPRIGHT P[3] +#define P_MEDIAN P[4] +#define P_MV1 P[9] +#define FLAG_QPEL 1 //must be 1 + +static int encode_q_branch(SnowContext *s, int level, int x, int y){ + uint8_t p_buffer[1024]; + uint8_t i_buffer[1024]; + uint8_t p_state[sizeof(s->block_state)]; + uint8_t i_state[sizeof(s->block_state)]; + RangeCoder pc, ic; + uint8_t *pbbak= s->c.bytestream; + uint8_t *pbbak_start= s->c.bytestream_start; + int score, score2, iscore, i_len, p_len, block_s, sum, base_bits; + const int w= s->b_width << s->block_max_depth; + const int h= s->b_height << s->block_max_depth; + const int rem_depth= s->block_max_depth - level; + const int index= (x + y*w) << rem_depth; + const int block_w= 1<<(LOG2_MB_SIZE - level); + int trx= (x+1)<block[index-1] : &null_block; + const BlockNode *top = y ? &s->block[index-w] : &null_block; + const BlockNode *right = trxblock[index+1] : &null_block; + const BlockNode *bottom= tryblock[index+w] : &null_block; + const BlockNode *tl = y && x ? &s->block[index-w-1] : left; + const BlockNode *tr = y && trxblock[index-w+(1<color[0]; + int pcb= left->color[1]; + int pcr= left->color[2]; + int pmx, pmy; + int mx=0, my=0; + int l,cr,cb; + const int stride= s->current_picture.linesize[0]; + const int uvstride= s->current_picture.linesize[1]; + uint8_t *current_data[3]= { s->input_picture.data[0] + (x + y* stride)*block_w, + s->input_picture.data[1] + (x + y*uvstride)*block_w/2, + s->input_picture.data[2] + (x + y*uvstride)*block_w/2}; + int P[10][2]; + int16_t last_mv[3][2]; + int qpel= !!(s->avctx->flags & CODEC_FLAG_QPEL); //unused + const int shift= 1+qpel; + MotionEstContext *c= &s->m.me; + int ref_context= av_log2(2*left->ref) + av_log2(2*top->ref); + int mx_context= av_log2(2*FFABS(left->mx - top->mx)); + int my_context= av_log2(2*FFABS(left->my - top->my)); + int s_context= 2*left->level + 2*top->level + tl->level + tr->level; + int ref, best_ref, ref_score, ref_mx, ref_my; + + assert(sizeof(s->block_state) >= 256); + if(s->keyframe){ + set_blocks(s, level, x, y, pl, pcb, pcr, 0, 0, 0, BLOCK_INTRA); + return 0; + } + +// clip predictors / edge ? + + P_LEFT[0]= left->mx; + P_LEFT[1]= left->my; + P_TOP [0]= top->mx; + P_TOP [1]= top->my; + P_TOPRIGHT[0]= tr->mx; + P_TOPRIGHT[1]= tr->my; + + last_mv[0][0]= s->block[index].mx; + last_mv[0][1]= s->block[index].my; + last_mv[1][0]= right->mx; + last_mv[1][1]= right->my; + last_mv[2][0]= bottom->mx; + last_mv[2][1]= bottom->my; + + s->m.mb_stride=2; + s->m.mb_x= + s->m.mb_y= 0; + c->skip= 0; + + assert(c-> stride == stride); + assert(c->uvstride == uvstride); + + c->penalty_factor = get_penalty_factor(s->lambda, s->lambda2, c->avctx->me_cmp); + c->sub_penalty_factor= get_penalty_factor(s->lambda, s->lambda2, c->avctx->me_sub_cmp); + c->mb_penalty_factor = get_penalty_factor(s->lambda, s->lambda2, c->avctx->mb_cmp); + c->current_mv_penalty= c->mv_penalty[s->m.f_code=1] + MAX_MV; + + c->xmin = - x*block_w - 16+3; + c->ymin = - y*block_w - 16+3; + c->xmax = - (x+1)*block_w + (w<<(LOG2_MB_SIZE - s->block_max_depth)) + 16-3; + c->ymax = - (y+1)*block_w + (h<<(LOG2_MB_SIZE - s->block_max_depth)) + 16-3; + + if(P_LEFT[0] > (c->xmax<xmax< (c->ymax<ymax< (c->xmax<xmax< (c->ymax<ymax<xmin<xmin< (c->xmax<xmax< (c->ymax<ymax<pred_x= P_LEFT[0]; + c->pred_y= P_LEFT[1]; + } else { + c->pred_x = P_MEDIAN[0]; + c->pred_y = P_MEDIAN[1]; + } + + score= INT_MAX; + best_ref= 0; + for(ref=0; refref_frames; ref++){ + init_ref(c, current_data, s->last_picture[ref].data, NULL, block_w*x, block_w*y, 0); + + ref_score= ff_epzs_motion_search(&s->m, &ref_mx, &ref_my, P, 0, /*ref_index*/ 0, last_mv, + (1<<16)>>shift, level-LOG2_MB_SIZE+4, block_w); + + assert(ref_mx >= c->xmin); + assert(ref_mx <= c->xmax); + assert(ref_my >= c->ymin); + assert(ref_my <= c->ymax); + + ref_score= c->sub_motion_search(&s->m, &ref_mx, &ref_my, ref_score, 0, 0, level-LOG2_MB_SIZE+4, block_w); + ref_score= ff_get_mb_score(&s->m, ref_mx, ref_my, 0, 0, level-LOG2_MB_SIZE+4, block_w, 0); + ref_score+= 2*av_log2(2*ref)*c->penalty_factor; + if(s->ref_mvs[ref]){ + s->ref_mvs[ref][index][0]= ref_mx; + s->ref_mvs[ref][index][1]= ref_my; + s->ref_scores[ref][index]= ref_score; + } + if(score > ref_score){ + score= ref_score; + best_ref= ref; + mx= ref_mx; + my= ref_my; + } + } + //FIXME if mb_cmp != SSE then intra cannot be compared currently and mb_penalty vs. lambda2 + + // subpel search + base_bits= get_rac_count(&s->c) - 8*(s->c.bytestream - s->c.bytestream_start); + pc= s->c; + pc.bytestream_start= + pc.bytestream= p_buffer; //FIXME end/start? and at the other stoo + memcpy(p_state, s->block_state, sizeof(s->block_state)); + + if(level!=s->block_max_depth) + put_rac(&pc, &p_state[4 + s_context], 1); + put_rac(&pc, &p_state[1 + left->type + top->type], 0); + if(s->ref_frames > 1) + put_symbol(&pc, &p_state[128 + 1024 + 32*ref_context], best_ref, 0); + pred_mv(s, &pmx, &pmy, best_ref, left, top, tr); + put_symbol(&pc, &p_state[128 + 32*(mx_context + 16*!!best_ref)], mx - pmx, 1); + put_symbol(&pc, &p_state[128 + 32*(my_context + 16*!!best_ref)], my - pmy, 1); + p_len= pc.bytestream - pc.bytestream_start; + score += (s->lambda2*(get_rac_count(&pc)-base_bits))>>FF_LAMBDA_SHIFT; + + block_s= block_w*block_w; + sum = pix_sum(current_data[0], stride, block_w); + l= (sum + block_s/2)/block_s; + iscore = pix_norm1(current_data[0], stride, block_w) - 2*l*sum + l*l*block_s; + + block_s= block_w*block_w>>2; + sum = pix_sum(current_data[1], uvstride, block_w>>1); + cb= (sum + block_s/2)/block_s; +// iscore += pix_norm1(¤t_mb[1][0], uvstride, block_w>>1) - 2*cb*sum + cb*cb*block_s; + sum = pix_sum(current_data[2], uvstride, block_w>>1); + cr= (sum + block_s/2)/block_s; +// iscore += pix_norm1(¤t_mb[2][0], uvstride, block_w>>1) - 2*cr*sum + cr*cr*block_s; + + ic= s->c; + ic.bytestream_start= + ic.bytestream= i_buffer; //FIXME end/start? and at the other stoo + memcpy(i_state, s->block_state, sizeof(s->block_state)); + if(level!=s->block_max_depth) + put_rac(&ic, &i_state[4 + s_context], 1); + put_rac(&ic, &i_state[1 + left->type + top->type], 1); + put_symbol(&ic, &i_state[32], l-pl , 1); + put_symbol(&ic, &i_state[64], cb-pcb, 1); + put_symbol(&ic, &i_state[96], cr-pcr, 1); + i_len= ic.bytestream - ic.bytestream_start; + iscore += (s->lambda2*(get_rac_count(&ic)-base_bits))>>FF_LAMBDA_SHIFT; + +// assert(score==256*256*256*64-1); + assert(iscore < 255*255*256 + s->lambda2*10); + assert(iscore >= 0); + assert(l>=0 && l<=255); + assert(pl>=0 && pl<=255); + + if(level==0){ + int varc= iscore >> 8; + int vard= score >> 8; + if (vard <= 64 || vard < varc) + c->scene_change_score+= ff_sqrt(vard) - ff_sqrt(varc); + else + c->scene_change_score+= s->m.qscale; + } + + if(level!=s->block_max_depth){ + put_rac(&s->c, &s->block_state[4 + s_context], 0); + score2 = encode_q_branch(s, level+1, 2*x+0, 2*y+0); + score2+= encode_q_branch(s, level+1, 2*x+1, 2*y+0); + score2+= encode_q_branch(s, level+1, 2*x+0, 2*y+1); + score2+= encode_q_branch(s, level+1, 2*x+1, 2*y+1); + score2+= s->lambda2>>FF_LAMBDA_SHIFT; //FIXME exact split overhead + + if(score2 < score && score2 < iscore) + return score2; + } + + if(iscore < score){ + pred_mv(s, &pmx, &pmy, 0, left, top, tr); + memcpy(pbbak, i_buffer, i_len); + s->c= ic; + s->c.bytestream_start= pbbak_start; + s->c.bytestream= pbbak + i_len; + set_blocks(s, level, x, y, l, cb, cr, pmx, pmy, 0, BLOCK_INTRA); + memcpy(s->block_state, i_state, sizeof(s->block_state)); + return iscore; + }else{ + memcpy(pbbak, p_buffer, p_len); + s->c= pc; + s->c.bytestream_start= pbbak_start; + s->c.bytestream= pbbak + p_len; + set_blocks(s, level, x, y, pl, pcb, pcr, mx, my, best_ref, 0); + memcpy(s->block_state, p_state, sizeof(s->block_state)); + return score; + } +} + +static void encode_q_branch2(SnowContext *s, int level, int x, int y){ + const int w= s->b_width << s->block_max_depth; + const int rem_depth= s->block_max_depth - level; + const int index= (x + y*w) << rem_depth; + int trx= (x+1)<block[index]; + const BlockNode *left = x ? &s->block[index-1] : &null_block; + const BlockNode *top = y ? &s->block[index-w] : &null_block; + const BlockNode *tl = y && x ? &s->block[index-w-1] : left; + const BlockNode *tr = y && trxblock[index-w+(1<color[0]; + int pcb= left->color[1]; + int pcr= left->color[2]; + int pmx, pmy; + int ref_context= av_log2(2*left->ref) + av_log2(2*top->ref); + int mx_context= av_log2(2*FFABS(left->mx - top->mx)) + 16*!!b->ref; + int my_context= av_log2(2*FFABS(left->my - top->my)) + 16*!!b->ref; + int s_context= 2*left->level + 2*top->level + tl->level + tr->level; + + if(s->keyframe){ + set_blocks(s, level, x, y, pl, pcb, pcr, 0, 0, 0, BLOCK_INTRA); + return; + } + + if(level!=s->block_max_depth){ + if(same_block(b,b+1) && same_block(b,b+w) && same_block(b,b+w+1)){ + put_rac(&s->c, &s->block_state[4 + s_context], 1); + }else{ + put_rac(&s->c, &s->block_state[4 + s_context], 0); + encode_q_branch2(s, level+1, 2*x+0, 2*y+0); + encode_q_branch2(s, level+1, 2*x+1, 2*y+0); + encode_q_branch2(s, level+1, 2*x+0, 2*y+1); + encode_q_branch2(s, level+1, 2*x+1, 2*y+1); + return; + } + } + if(b->type & BLOCK_INTRA){ + pred_mv(s, &pmx, &pmy, 0, left, top, tr); + put_rac(&s->c, &s->block_state[1 + (left->type&1) + (top->type&1)], 1); + put_symbol(&s->c, &s->block_state[32], b->color[0]-pl , 1); + put_symbol(&s->c, &s->block_state[64], b->color[1]-pcb, 1); + put_symbol(&s->c, &s->block_state[96], b->color[2]-pcr, 1); + set_blocks(s, level, x, y, b->color[0], b->color[1], b->color[2], pmx, pmy, 0, BLOCK_INTRA); + }else{ + pred_mv(s, &pmx, &pmy, b->ref, left, top, tr); + put_rac(&s->c, &s->block_state[1 + (left->type&1) + (top->type&1)], 0); + if(s->ref_frames > 1) + put_symbol(&s->c, &s->block_state[128 + 1024 + 32*ref_context], b->ref, 0); + put_symbol(&s->c, &s->block_state[128 + 32*mx_context], b->mx - pmx, 1); + put_symbol(&s->c, &s->block_state[128 + 32*my_context], b->my - pmy, 1); + set_blocks(s, level, x, y, pl, pcb, pcr, b->mx, b->my, b->ref, 0); + } +} + static int get_dc(SnowContext *s, int mb_x, int mb_y, int plane_index){ int i, x2, y2; Plane *p= &s->plane[plane_index]; @@ -2938,6 +3591,168 @@ static int get_4block_rd(SnowContext *s, int mb_x, int mb_y, int plane_index){ return distortion + rate*penalty_factor; } +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, stride<=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, height>>level, stride<width; + const int h= b->height; + int x, y; + + if(1){ + int run=0; + int runs[w*h]; + int run_index=0; + int max_index; + + for(y=0; y 1){ + if(orientation==1) ll= src[y + (x-2)*stride]; + else ll= src[x - 2 + y*stride]; + }*/ + } + if(parent){ + int px= x>>1; + int py= y>>1; + if(pxparent->width && pyparent->height) + p= parent[px + py*2*stride]; + } + if(!(/*ll|*/l|lt|t|rt|p)){ + if(v){ + runs[run_index++]= run; + run=0; + }else{ + run++; + } + } + } + } + max_index= run_index; + runs[run_index++]= run; + run_index=0; + run= runs[run_index++]; + + put_symbol2(&s->c, b->state[30], max_index, 0); + if(run_index <= max_index) + put_symbol2(&s->c, b->state[1], run, 3); + + for(y=0; yc.bytestream_end - s->c.bytestream < w*40){ + av_log(s->avctx, AV_LOG_ERROR, "encoded frame too large\n"); + return -1; + } + for(x=0; x 1){ + if(orientation==1) ll= src[y + (x-2)*stride]; + else ll= src[x - 2 + y*stride]; + }*/ + } + if(parent){ + int px= x>>1; + int py= y>>1; + if(pxparent->width && pyparent->height) + p= parent[px + py*2*stride]; + } + if(/*ll|*/l|lt|t|rt|p){ + int context= av_log2(/*FFABS(ll) + */3*FFABS(l) + FFABS(lt) + 2*FFABS(t) + FFABS(rt) + FFABS(p)); + + put_rac(&s->c, &b->state[0][context], !!v); + }else{ + if(!run){ + run= runs[run_index++]; + + if(run_index <= max_index) + put_symbol2(&s->c, b->state[1], run, 3); + assert(v); + }else{ + run--; + assert(!v); + } + } + if(v){ + int context= av_log2(/*FFABS(ll) + */3*FFABS(l) + FFABS(lt) + 2*FFABS(t) + FFABS(rt) + FFABS(p)); + int l2= 2*FFABS(l) + (l<0); + int t2= 2*FFABS(t) + (t<0); + + put_symbol2(&s->c, b->state[context + 2], FFABS(v)-1, context-4); + put_rac(&s->c, &b->state[0][16 + 1 + 3 + quant3bA[l2&0xFF] + 3*quant3bA[t2&0xFF]], v<0); + } + } + } + } + return 0; +} + +static int encode_subband(SnowContext *s, SubBand *b, IDWTELEM *src, IDWTELEM *parent, int stride, int orientation){ +// encode_subband_qtree(s, b, src, parent, stride, orientation); +// encode_subband_z0run(s, b, src, parent, stride, orientation); + return encode_subband_c0run(s, b, src, parent, stride, orientation); +// encode_subband_dzr(s, b, src, parent, stride, orientation); +} + static av_always_inline int check_block(SnowContext *s, int mb_x, int mb_y, int p[3], int intra, const uint8_t *obmc_edged, int *best_rd){ const int b_stride= s->b_width << s->block_max_depth; BlockNode *block= &s->block[mb_x + mb_y * b_stride]; @@ -3244,6 +4059,28 @@ static void iterative_me(SnowContext *s){ } } +static void encode_blocks(SnowContext *s, int search){ + int x, y; + int w= s->b_width; + int h= s->b_height; + + if(s->avctx->me_method == ME_ITER && !s->keyframe && search) + iterative_me(s); + + for(y=0; yc.bytestream_end - s->c.bytestream < w*MB_SIZE*MB_SIZE*3){ //FIXME nicer limit + av_log(s->avctx, AV_LOG_ERROR, "encoded frame too large\n"); + return; + } + for(x=0; xavctx->me_method == ME_ITER || !search) + encode_q_branch2(s, 0, x, y); + else + encode_q_branch (s, 0, x, y); + } + } +} + static void quantize(SnowContext *s, SubBand *b, IDWTELEM *dst, DWTELEM *src, int stride, int bias){ const int w= b->width; const int h= b->height; @@ -3305,29 +4142,6 @@ static void quantize(SnowContext *s, SubBand *b, IDWTELEM *dst, DWTELEM *src, in } } -static void dequantize_slice_buffered(SnowContext *s, slice_buffer * sb, SubBand *b, IDWTELEM *src, int stride, int start_y, int end_y){ - const int w= b->width; - const int qlog= av_clip(s->qlog + b->qlog, 0, QROOT*16); - const int qmul= qexp[qlog&(QROOT-1)]<<(qlog>>QSHIFT); - const int qadd= (s->qbias*qmul)>>QBIAS_SHIFT; - int x,y; - - if(s->qlog == LOSSLESS_QLOG) return; - - for(y=start_y; ystride_line) + b->buf_y_offset) + b->buf_x_offset; - for(x=0; x>(QEXPSHIFT)); //FIXME try different bias - }else if(i>0){ - line[x]= (( i*qmul + qadd)>>(QEXPSHIFT)); - } - } - } -} - static void dequantize(SnowContext *s, SubBand *b, IDWTELEM *src, int stride){ const int w= b->width; const int h= b->height; @@ -3374,36 +4188,6 @@ static void decorrelate(SnowContext *s, SubBand *b, IDWTELEM *src, int stride, i } } -static void correlate_slice_buffered(SnowContext *s, slice_buffer * sb, SubBand *b, IDWTELEM *src, int stride, int inverse, int use_median, int start_y, int end_y){ - const int w= b->width; - int x,y; - - IDWTELEM * line=0; // silence silly "could be used without having been initialized" warning - IDWTELEM * prev; - - if (start_y != 0) - line = slice_buffer_get_line(sb, ((start_y - 1) * b->stride_line) + b->buf_y_offset) + b->buf_x_offset; - - for(y=start_y; ystride_line) + b->buf_y_offset) + b->buf_x_offset; - for(x=0; xwidth; const int h= b->height; @@ -3532,244 +4316,6 @@ static void update_last_header_values(SnowContext *s){ s->last_spatial_decomposition_count = s->spatial_decomposition_count; } -static void decode_qlogs(SnowContext *s){ - int plane_index, level, orientation; - - for(plane_index=0; plane_index<3; plane_index++){ - for(level=0; levelspatial_decomposition_count; level++){ - for(orientation=level ? 1:0; orientation<4; orientation++){ - int q; - if (plane_index==2) q= s->plane[1].band[level][orientation].qlog; - else if(orientation==2) q= s->plane[plane_index].band[level][1].qlog; - else q= get_symbol(&s->c, s->header_state, 1); - s->plane[plane_index].band[level][orientation].qlog= q; - } - } - } -} - -#define GET_S(dst, check) \ - tmp= get_symbol(&s->c, s->header_state, 0);\ - if(!(check)){\ - av_log(s->avctx, AV_LOG_ERROR, "Error " #dst " is %d\n", tmp);\ - return -1;\ - }\ - dst= tmp; - -static int decode_header(SnowContext *s){ - int plane_index, tmp; - uint8_t kstate[32]; - - memset(kstate, MID_STATE, sizeof(kstate)); - - s->keyframe= get_rac(&s->c, kstate); - if(s->keyframe || s->always_reset){ - reset_contexts(s); - s->spatial_decomposition_type= - s->qlog= - s->qbias= - s->mv_scale= - s->block_max_depth= 0; - } - if(s->keyframe){ - GET_S(s->version, tmp <= 0U) - s->always_reset= get_rac(&s->c, s->header_state); - s->temporal_decomposition_type= get_symbol(&s->c, s->header_state, 0); - s->temporal_decomposition_count= get_symbol(&s->c, s->header_state, 0); - GET_S(s->spatial_decomposition_count, 0 < tmp && tmp <= MAX_DECOMPOSITIONS) - s->colorspace_type= get_symbol(&s->c, s->header_state, 0); - s->chroma_h_shift= get_symbol(&s->c, s->header_state, 0); - s->chroma_v_shift= get_symbol(&s->c, s->header_state, 0); - s->spatial_scalability= get_rac(&s->c, s->header_state); -// s->rate_scalability= get_rac(&s->c, s->header_state); - GET_S(s->max_ref_frames, tmp < (unsigned)MAX_REF_FRAMES) - s->max_ref_frames++; - - decode_qlogs(s); - } - - if(!s->keyframe){ - if(get_rac(&s->c, s->header_state)){ - for(plane_index=0; plane_index<2; plane_index++){ - int htaps, i, sum=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_MAX || 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)); - } - if(get_rac(&s->c, s->header_state)){ - GET_S(s->spatial_decomposition_count, 0 < tmp && tmp <= MAX_DECOMPOSITIONS) - decode_qlogs(s); - } - } - - s->spatial_decomposition_type+= get_symbol(&s->c, s->header_state, 1); - if(s->spatial_decomposition_type > 1U){ - av_log(s->avctx, AV_LOG_ERROR, "spatial_decomposition_type %d not supported", s->spatial_decomposition_type); - return -1; - } - if(FFMIN(s->avctx-> width>>s->chroma_h_shift, - s->avctx->height>>s->chroma_v_shift) >> (s->spatial_decomposition_count-1) <= 0){ - av_log(s->avctx, AV_LOG_ERROR, "spatial_decomposition_count %d too large for size", s->spatial_decomposition_count); - return -1; - } - - s->qlog += get_symbol(&s->c, s->header_state, 1); - s->mv_scale += get_symbol(&s->c, s->header_state, 1); - s->qbias += get_symbol(&s->c, s->header_state, 1); - s->block_max_depth+= get_symbol(&s->c, s->header_state, 1); - if(s->block_max_depth > 1 || s->block_max_depth < 0){ - av_log(s->avctx, AV_LOG_ERROR, "block_max_depth= %d is too large", s->block_max_depth); - s->block_max_depth= 0; - return -1; - } - - return 0; -} - -static void init_qexp(void){ - int i; - double v=128; - - for(i=0; ipriv_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 - - dsputil_init(&s->dsp, avctx); - -#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) - - if(!qexp[0]) - 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; iavctx->get_buffer(s->avctx, &s->mconly_picture); - s->scratchbuf = av_malloc(s->mconly_picture.linesize[0]*7*MB_SIZE); - - return 0; -} - -static int 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; -} - static int qscale2qlog(int qscale){ return rint(QROOT*log(qscale / (float)FF_QP2LAMBDA)/log(2)) + 61*QROOT/8; //<64 >60 @@ -3853,325 +4399,6 @@ static void calculate_visual_weight(SnowContext *s, Plane *p){ } } -#define QUANTIZE2 0 - -#if QUANTIZE2==1 -#define Q2_STEP 8 - -static void find_sse(SnowContext *s, Plane *p, int *score, int score_stride, IDWTELEM *r0, IDWTELEM *r1, int level, int orientation){ - SubBand *b= &p->band[level][orientation]; - int x, y; - int xo=0; - int yo=0; - int step= 1 << (s->spatial_decomposition_count - level); - - if(orientation&1) - xo= step>>1; - if(orientation&2) - yo= step>>1; - - //FIXME bias for nonzero ? - //FIXME optimize - memset(score, 0, sizeof(*score)*score_stride*((p->height + Q2_STEP-1)/Q2_STEP)); - for(y=0; yheight; y++){ - for(x=0; xwidth; x++){ - int sx= (x-xo + step/2) / step / Q2_STEP; - int sy= (y-yo + step/2) / step / Q2_STEP; - int v= r0[x + y*p->width] - r1[x + y*p->width]; - assert(sx>=0 && sy>=0 && sx < score_stride); - v= ((v+8)>>4)<<4; - score[sx + sy*score_stride] += v*v; - assert(score[sx + sy*score_stride] >= 0); - } - } -} - -static void dequantize_all(SnowContext *s, Plane *p, IDWTELEM *buffer, int width, int height){ - int level, orientation; - - for(level=0; levelspatial_decomposition_count; level++){ - for(orientation=level ? 1 : 0; orientation<4; orientation++){ - SubBand *b= &p->band[level][orientation]; - IDWTELEM *dst= buffer + (b->ibuf - s->spatial_idwt_buffer); - - dequantize(s, b, dst, b->stride); - } - } -} - -static void dwt_quantize(SnowContext *s, Plane *p, DWTELEM *buffer, int width, int height, int stride, int type){ - int level, orientation, ys, xs, x, y, pass; - IDWTELEM best_dequant[height * stride]; - IDWTELEM idwt2_buffer[height * stride]; - const int score_stride= (width + 10)/Q2_STEP; - int best_score[(width + 10)/Q2_STEP * (height + 10)/Q2_STEP]; //FIXME size - int score[(width + 10)/Q2_STEP * (height + 10)/Q2_STEP]; //FIXME size - int threshold= (s->m.lambda * s->m.lambda) >> 6; - - //FIXME pass the copy cleanly ? - -// memcpy(dwt_buffer, buffer, height * stride * sizeof(DWTELEM)); - ff_spatial_dwt(buffer, width, height, stride, type, s->spatial_decomposition_count); - - for(level=0; levelspatial_decomposition_count; level++){ - for(orientation=level ? 1 : 0; orientation<4; orientation++){ - SubBand *b= &p->band[level][orientation]; - IDWTELEM *dst= best_dequant + (b->ibuf - s->spatial_idwt_buffer); - DWTELEM *src= buffer + (b-> buf - s->spatial_dwt_buffer); - assert(src == b->buf); // code does not depend on this but it is true currently - - quantize(s, b, dst, src, b->stride, s->qbias); - } - } - for(pass=0; pass<1; pass++){ - if(s->qbias == 0) //keyframe - continue; - for(level=0; levelspatial_decomposition_count; level++){ - for(orientation=level ? 1 : 0; orientation<4; orientation++){ - SubBand *b= &p->band[level][orientation]; - IDWTELEM *dst= idwt2_buffer + (b->ibuf - s->spatial_idwt_buffer); - IDWTELEM *best_dst= best_dequant + (b->ibuf - s->spatial_idwt_buffer); - - for(ys= 0; ysspatial_decomposition_count); - find_sse(s, p, best_score, score_stride, idwt2_buffer, s->spatial_idwt_buffer, level, orientation); - memcpy(idwt2_buffer, best_dequant, height * stride * sizeof(IDWTELEM)); - for(y=ys; yheight; y+= Q2_STEP){ - for(x=xs; xwidth; x+= Q2_STEP){ - if(dst[x + y*b->stride]<0) dst[x + y*b->stride]++; - if(dst[x + y*b->stride]>0) dst[x + y*b->stride]--; - //FIXME try more than just -- - } - } - dequantize_all(s, p, idwt2_buffer, width, height); - ff_spatial_idwt(idwt2_buffer, width, height, stride, type, s->spatial_decomposition_count); - find_sse(s, p, score, score_stride, idwt2_buffer, s->spatial_idwt_buffer, level, orientation); - for(y=ys; yheight; y+= Q2_STEP){ - for(x=xs; xwidth; x+= Q2_STEP){ - int score_idx= x/Q2_STEP + (y/Q2_STEP)*score_stride; - if(score[score_idx] <= best_score[score_idx] + threshold){ - best_score[score_idx]= score[score_idx]; - if(best_dst[x + y*b->stride]<0) best_dst[x + y*b->stride]++; - if(best_dst[x + y*b->stride]>0) best_dst[x + y*b->stride]--; - //FIXME copy instead - } - } - } - } - } - } - } - } - memcpy(s->spatial_idwt_buffer, best_dequant, height * stride * sizeof(IDWTELEM)); //FIXME work with that directly instead of copy at the end -} - -#endif /* QUANTIZE2==1 */ - -static av_cold int encode_init(AVCodecContext *avctx) -{ - SnowContext *s = avctx->priv_data; - int plane_index; - - if(avctx->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL){ - av_log(avctx, AV_LOG_ERROR, "This codec is under development, files encoded with it may not be decodable with future versions!!!\n" - "Use vstrict=-2 / -strict -2 to use it anyway.\n"); - return -1; - } - - if(avctx->prediction_method == DWT_97 - && (avctx->flags & CODEC_FLAG_QSCALE) - && avctx->global_quality == 0){ - av_log(avctx, AV_LOG_ERROR, "The 9/7 wavelet is incompatible with lossless mode.\n"); - return -1; - } - - s->spatial_decomposition_type= avctx->prediction_method; //FIXME add decorrelator type r transform_type - - s->mv_scale = (avctx->flags & CODEC_FLAG_QPEL) ? 2 : 4; - s->block_max_depth= (avctx->flags & CODEC_FLAG_4MV ) ? 1 : 0; - - for(plane_index=0; plane_index<3; plane_index++){ - 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; - } - - common_init(avctx); - alloc_blocks(s); - - s->version=0; - - s->m.avctx = avctx; - s->m.flags = avctx->flags; - s->m.bit_rate= avctx->bit_rate; - - s->m.me.temp = - s->m.me.scratchpad= av_mallocz((avctx->width+64)*2*16*2*sizeof(uint8_t)); - s->m.me.map = av_mallocz(ME_MAP_SIZE*sizeof(uint32_t)); - s->m.me.score_map = av_mallocz(ME_MAP_SIZE*sizeof(uint32_t)); - s->m.obmc_scratchpad= av_mallocz(MB_SIZE*MB_SIZE*12*sizeof(uint32_t)); - h263_encode_init(&s->m); //mv_penalty - - s->max_ref_frames = FFMAX(FFMIN(avctx->refs, MAX_REF_FRAMES), 1); - - if(avctx->flags&CODEC_FLAG_PASS1){ - if(!avctx->stats_out) - avctx->stats_out = av_mallocz(256); - } - if((avctx->flags&CODEC_FLAG_PASS2) || !(avctx->flags&CODEC_FLAG_QSCALE)){ - if(ff_rate_control_init(&s->m) < 0) - return -1; - } - s->pass1_rc= !(avctx->flags & (CODEC_FLAG_QSCALE|CODEC_FLAG_PASS2)); - - avctx->coded_frame= &s->current_picture; - switch(avctx->pix_fmt){ -// case PIX_FMT_YUV444P: -// case PIX_FMT_YUV422P: - case PIX_FMT_YUV420P: - case PIX_FMT_GRAY8: -// case PIX_FMT_YUV411P: -// case PIX_FMT_YUV410P: - s->colorspace_type= 0; - break; -/* case PIX_FMT_RGB32: - s->colorspace= 1; - break;*/ - default: - av_log(avctx, AV_LOG_ERROR, "pixel format not supported\n"); - return -1; - } -// avcodec_get_chroma_sub_sample(avctx->pix_fmt, &s->chroma_h_shift, &s->chroma_v_shift); - s->chroma_h_shift= 1; - s->chroma_v_shift= 1; - - ff_set_cmp(&s->dsp, s->dsp.me_cmp, s->avctx->me_cmp); - ff_set_cmp(&s->dsp, s->dsp.me_sub_cmp, s->avctx->me_sub_cmp); - - s->avctx->get_buffer(s->avctx, &s->input_picture); - - if(s->avctx->me_method == ME_ITER){ - int i; - int size= s->b_width * s->b_height << 2*s->block_max_depth; - for(i=0; imax_ref_frames; i++){ - s->ref_mvs[i]= av_mallocz(size*sizeof(int16_t[2])); - s->ref_scores[i]= av_mallocz(size*sizeof(uint32_t)); - } - } - - return 0; -} - -#define USE_HALFPEL_PLANE 0 - -static void halfpel_interpol(SnowContext *s, uint8_t *halfpel[4][4], AVFrame *frame){ - int p,x,y; - - assert(!(s->avctx->flags & CODEC_FLAG_EMU_EDGE)); - - 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>5; - } - } - for(y=0; y>5; - } - } - src= halfpel[1][p]; - for(y=0; y>5; - } - } - -//FIXME border! - } -} - -static void 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])); - } -} - -static int 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->dsp.draw_edges(s->current_picture.data[0], s->current_picture.linesize[0], w , h , EDGE_WIDTH ); - s->dsp.draw_edges(s->current_picture.data[1], s->current_picture.linesize[1], w>>1, h>>1, EDGE_WIDTH/2); - s->dsp.draw_edges(s->current_picture.data[2], s->current_picture.linesize[2], w>>1, h>>1, EDGE_WIDTH/2); - } - - 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; imax_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; -} - static int encode_frame(AVCodecContext *avctx, unsigned char *buf, int buf_size, void *data){ SnowContext *s = avctx->priv_data; RangeCoder * const c= &s->c; @@ -4447,39 +4674,6 @@ redo_frame: return ff_rac_terminate(c); } -static av_cold void 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; iref_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); - } - } - } -} - static av_cold int encode_end(AVCodecContext *avctx) { SnowContext *s = avctx->priv_data; @@ -4490,202 +4684,6 @@ static av_cold int encode_end(AVCodecContext *avctx) return 0; } -static av_cold int decode_init(AVCodecContext *avctx) -{ - avctx->pix_fmt= PIX_FMT_YUV420P; - - common_init(avctx); - - return 0; -} - -static int decode_frame(AVCodecContext *avctx, void *data, int *data_size, AVPacket *avpkt){ - const uint8_t *buf = avpkt->data; - int buf_size = avpkt->size; - SnowContext *s = avctx->priv_data; - RangeCoder * const c= &s->c; - int bytes_read; - AVFrame *picture = data; - int level, orientation, plane_index; - - ff_init_range_decoder(c, buf, buf_size); - ff_build_rac_states(c, 0.05*(1LL<<32), 256-8); - - s->current_picture.pict_type= FF_I_TYPE; //FIXME I vs. P - if(decode_header(s)<0) - return -1; - common_init_after_header(avctx); - - // realloc slice buffer for the case that spatial_decomposition_count changed - slice_buffer_destroy(&s->sb); - slice_buffer_init(&s->sb, s->plane[0].height, (MB_SIZE >> s->block_max_depth) + s->spatial_decomposition_count * 8 + 1, s->plane[0].width, s->spatial_idwt_buffer); - - 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; - } - - alloc_blocks(s); - - if(frame_start(s) < 0) - return -1; - //keyframe flag duplication mess FIXME - if(avctx->debug&FF_DEBUG_PICT_INFO) - av_log(avctx, AV_LOG_ERROR, "keyframe:%d qlog:%d\n", s->keyframe, s->qlog); - - decode_blocks(s); - - for(plane_index=0; plane_index<3; plane_index++){ - Plane *p= &s->plane[plane_index]; - int w= p->width; - int h= p->height; - int x, y; - int decode_state[MAX_DECOMPOSITIONS][4][1]; /* Stored state info for unpack_coeffs. 1 variable per instance. */ - - if(s->avctx->debug&2048){ - memset(s->spatial_dwt_buffer, 0, sizeof(DWTELEM)*w*h); - predict_plane(s, s->spatial_idwt_buffer, plane_index, 1); - - for(y=0; ycurrent_picture.data[plane_index][y*s->current_picture.linesize[plane_index] + x]; - s->mconly_picture.data[plane_index][y*s->mconly_picture.linesize[plane_index] + x]= v; - } - } - } - - { - for(level=0; levelspatial_decomposition_count; level++){ - for(orientation=level ? 1 : 0; orientation<4; orientation++){ - SubBand *b= &p->band[level][orientation]; - unpack_coeffs(s, b, b->parent, orientation); - } - } - } - - { - const int mb_h= s->b_height << s->block_max_depth; - const int block_size = MB_SIZE >> s->block_max_depth; - const int block_w = plane_index ? block_size/2 : block_size; - int mb_y; - DWTCompose cs[MAX_DECOMPOSITIONS]; - int yd=0, yq=0; - int y; - int end_y; - - ff_spatial_idwt_buffered_init(cs, &s->sb, w, h, 1, s->spatial_decomposition_type, s->spatial_decomposition_count); - for(mb_y=0; mb_y<=mb_h; mb_y++){ - - int slice_starty = block_w*mb_y; - int slice_h = block_w*(mb_y+1); - if (!(s->keyframe || s->avctx->debug&512)){ - slice_starty = FFMAX(0, slice_starty - (block_w >> 1)); - slice_h -= (block_w >> 1); - } - - for(level=0; levelspatial_decomposition_count; level++){ - for(orientation=level ? 1 : 0; orientation<4; orientation++){ - SubBand *b= &p->band[level][orientation]; - int start_y; - int end_y; - int our_mb_start = mb_y; - int our_mb_end = (mb_y + 1); - const int extra= 3; - start_y = (mb_y ? ((block_w * our_mb_start) >> (s->spatial_decomposition_count - level)) + s->spatial_decomposition_count - level + extra: 0); - end_y = (((block_w * our_mb_end) >> (s->spatial_decomposition_count - level)) + s->spatial_decomposition_count - level + extra); - if (!(s->keyframe || s->avctx->debug&512)){ - start_y = FFMAX(0, start_y - (block_w >> (1+s->spatial_decomposition_count - level))); - end_y = FFMAX(0, end_y - (block_w >> (1+s->spatial_decomposition_count - level))); - } - start_y = FFMIN(b->height, start_y); - end_y = FFMIN(b->height, end_y); - - if (start_y != end_y){ - if (orientation == 0){ - SubBand * correlate_band = &p->band[0][0]; - int correlate_end_y = FFMIN(b->height, end_y + 1); - int correlate_start_y = FFMIN(b->height, (start_y ? start_y + 1 : 0)); - decode_subband_slice_buffered(s, correlate_band, &s->sb, correlate_start_y, correlate_end_y, decode_state[0][0]); - correlate_slice_buffered(s, &s->sb, correlate_band, correlate_band->ibuf, correlate_band->stride, 1, 0, correlate_start_y, correlate_end_y); - dequantize_slice_buffered(s, &s->sb, correlate_band, correlate_band->ibuf, correlate_band->stride, start_y, end_y); - } - else - decode_subband_slice_buffered(s, b, &s->sb, start_y, end_y, decode_state[level][orientation]); - } - } - } - - for(; yddsp, cs, &s->sb, w, h, 1, s->spatial_decomposition_type, s->spatial_decomposition_count, yd); - } - - if(s->qlog == LOSSLESS_QLOG){ - for(; yqsb, yq); - for(x=0; xsb, s->spatial_idwt_buffer, plane_index, 1, mb_y); - - y = FFMIN(p->height, slice_starty); - end_y = FFMIN(p->height, slice_h); - while(y < end_y) - slice_buffer_release(&s->sb, y++); - } - - slice_buffer_flush(&s->sb); - } - - } - - emms_c(); - - release_buffer(avctx); - - if(!(s->avctx->debug&2048)) - *picture= s->current_picture; - else - *picture= s->mconly_picture; - - *data_size = sizeof(AVFrame); - - bytes_read= c->bytestream - c->bytestream_start; - if(bytes_read ==0) av_log(s->avctx, AV_LOG_ERROR, "error at end of frame\n"); //FIXME - - return bytes_read; -} - -static av_cold int decode_end(AVCodecContext *avctx) -{ - SnowContext *s = avctx->priv_data; - - slice_buffer_destroy(&s->sb); - - common_end(s); - - return 0; -} - -AVCodec snow_decoder = { - "snow", - CODEC_TYPE_VIDEO, - CODEC_ID_SNOW, - sizeof(SnowContext), - decode_init, - NULL, - decode_end, - decode_frame, - CODEC_CAP_DR1 /*| CODEC_CAP_DRAW_HORIZ_BAND*/, - NULL, - .long_name = NULL_IF_CONFIG_SMALL("Snow"), -}; - -#if CONFIG_SNOW_ENCODER AVCodec snow_encoder = { "snow", CODEC_TYPE_VIDEO,